diff --git a/apps/web/src/browser/BrowserDeviceToolbar.tsx b/apps/web/src/browser/BrowserDeviceToolbar.tsx
index a8c9027f8a16..390c77de4424 100644
--- a/apps/web/src/browser/BrowserDeviceToolbar.tsx
+++ b/apps/web/src/browser/BrowserDeviceToolbar.tsx
@@ -175,7 +175,7 @@ export function BrowserDeviceToolbar({
       }}
     >
       {width >= 560 ? (
-        <span className="mr-0.5 shrink-0 text-[11px] font-medium text-muted-foreground">
+        <span className="mr-0.5 shrink-0 text-2xs font-medium text-muted-foreground">
           Dimensions
         </span>
       ) : null}
diff --git a/apps/web/src/browser/HostedBrowserWebview.tsx b/apps/web/src/browser/HostedBrowserWebview.tsx
index 6c303afb27e9..35044cd9c169 100644
--- a/apps/web/src/browser/HostedBrowserWebview.tsx
+++ b/apps/web/src/browser/HostedBrowserWebview.tsx
@@ -352,7 +352,7 @@ export function HostedBrowserWebview(props: {
             />
             {activeDrag ? (
               <div
-                className="pointer-events-none absolute z-40 -translate-x-1/2 rounded-md border border-border/80 bg-background/95 px-2 py-1 text-[11px] font-medium tabular-nums text-foreground shadow-md backdrop-blur-sm"
+                className="pointer-events-none absolute z-40 -translate-x-1/2 rounded-md border border-border/80 bg-background/95 px-2 py-1 text-2xs font-medium tabular-nums text-foreground shadow-md backdrop-blur-sm"
                 style={{
                   left: layout.viewportX + layout.viewportWidth / 2,
                   top: layout.viewportY + 10,
diff --git a/apps/web/src/components/AgentsPanel.tsx b/apps/web/src/components/AgentsPanel.tsx
index 43f1fa123f38..7ca5b730b54e 100644
--- a/apps/web/src/components/AgentsPanel.tsx
+++ b/apps/web/src/components/AgentsPanel.tsx
@@ -162,12 +162,12 @@ function AgentRow({ agent }: { agent: RuntimeSubagent }) {
       <span className="col-start-2 row-start-1 flex min-w-0 items-baseline gap-2">
         <span className="min-w-0 truncate text-sm font-medium">{agent.title}</span>
         {role ? (
-          <span className="max-w-28 shrink-0 truncate rounded-sm border border-border/60 px-1 font-mono text-[.65rem] text-muted-foreground">
+          <span className="max-w-28 shrink-0 truncate rounded-sm border border-border/60 px-1 font-mono text-3xs text-muted-foreground">
             {role}
           </span>
         ) : null}
       </span>
-      <span className="col-start-3 row-start-1 min-w-14 text-right font-mono text-[.7rem] text-muted-foreground/80">
+      <span className="col-start-3 row-start-1 min-w-14 text-right font-mono text-2xs text-muted-foreground/80">
         <span className="inline-flex items-center gap-1">
           <AgentElapsed agent={agent} />
           {agent.status === "completed" ? (
@@ -183,7 +183,7 @@ function AgentRow({ agent }: { agent: RuntimeSubagent }) {
       >
         {activity ?? statusLabel}
       </span>
-      <span className="col-start-2 col-end-4 row-start-3 truncate font-mono text-[.7rem] tabular-nums text-muted-foreground/70">
+      <span className="col-start-2 col-end-4 row-start-3 truncate font-mono text-2xs tabular-nums text-muted-foreground/70">
         {metadata.join(" · ")}
       </span>
       <span className="sr-only">{statusLabel}</span>
@@ -234,7 +234,7 @@ function PhaseRail({ group }: { group: AgentPanelWorkflowGroup }) {
           >
             <span
               className={cn(
-                "font-mono text-[.65rem]",
+                "font-mono text-3xs",
                 phase.state === "running"
                   ? "text-info-foreground"
                   : phase.state === "done"
@@ -247,7 +247,7 @@ function PhaseRail({ group }: { group: AgentPanelWorkflowGroup }) {
             </span>
             <span className="flex items-center gap-0.5">
               {phase.members.length === 0 ? (
-                <span className="font-mono text-[.6rem] text-muted-foreground/50">–</span>
+                <span className="font-mono text-3xs text-muted-foreground/50">–</span>
               ) : (
                 phase.members.map((member) => <StatusDot key={member.id} status={member.status} />)
               )}
@@ -281,7 +281,7 @@ function WorkflowScriptView({
     <div className="mx-1.5 mb-1 rounded-md border border-border/60 bg-background/60">
       <div className="flex items-center gap-2 border-b border-border/50 px-2 py-1">
         <Braces aria-hidden className="size-3 text-muted-foreground" />
-        <span className="truncate font-mono text-[.65rem] text-muted-foreground">
+        <span className="truncate font-mono text-3xs text-muted-foreground">
           {scriptPath.split("/").at(-1)}
         </span>
         <Button
@@ -296,7 +296,7 @@ function WorkflowScriptView({
       </div>
       <div className="max-h-72 overflow-auto p-2">
         {result._tag === "Success" ? (
-          <pre className="whitespace-pre-wrap break-words font-mono text-[.7rem] leading-relaxed text-foreground/90">
+          <pre className="whitespace-pre-wrap break-words font-mono text-2xs leading-relaxed text-foreground/90">
             {result.value.contents}
             {result.value.truncated ? "\n… (truncated)" : ""}
           </pre>
@@ -339,7 +339,7 @@ function PhaseSection({
         onClick={() => setOpen((value) => !value)}
         aria-expanded={open}
         className={cn(
-          "mt-2 flex w-full items-center gap-1.5 rounded-sm px-1.5 text-left text-[.65rem] font-medium uppercase tracking-wider hover:bg-accent/40",
+          "mt-2 flex w-full items-center gap-1.5 rounded-sm px-1.5 text-left text-3xs font-medium uppercase tracking-wider hover:bg-accent/40",
           phase.state === "done"
             ? "text-success-foreground"
             : phase.state === "running"
@@ -399,7 +399,7 @@ function ExpandedWorkflowSection({
   const canShowScript = scriptPath !== undefined && environmentId !== null && threadId !== null;
   return (
     <section className="rounded-lg border border-border/50 bg-card/30 p-1.5">
-      <div className="flex items-center gap-2 px-1.5 pt-0.5 text-[.65rem] font-medium uppercase tracking-wider text-muted-foreground">
+      <div className="flex items-center gap-2 px-1.5 pt-0.5 text-3xs font-medium uppercase tracking-wider text-muted-foreground">
         <StatusDot status={group.workflow.status} />
         <span className="min-w-0 truncate">
           {group.workflow.workflowName ?? group.workflow.title}
@@ -486,7 +486,7 @@ function CollapsedWorkflowSection({
         <span className="truncate text-sm">
           {group.workflow.workflowName ?? group.workflow.title}
         </span>
-        <span className="ml-auto flex items-center gap-1.5 font-mono text-[.7rem] text-muted-foreground/80">
+        <span className="ml-auto flex items-center gap-1.5 font-mono text-2xs text-muted-foreground/80">
           {failed > 0 ? <span className="text-destructive-foreground">{failed} failed</span> : null}
           <span>{members.length} agents</span>
           <span className="tabular-nums">· {formatSubagentTokenCount(totalTokens)} tok</span>
@@ -557,7 +557,7 @@ export function AgentsPanel({
           ))}
           {model.directAgents.length > 0 ? (
             <section>
-              <div className="px-1.5 pt-1 text-[.65rem] font-medium uppercase tracking-wider text-muted-foreground">
+              <div className="px-1.5 pt-1 text-3xs font-medium uppercase tracking-wider text-muted-foreground">
                 Direct spawns
               </div>
               {model.directAgents.map((agent) => (
@@ -567,7 +567,7 @@ export function AgentsPanel({
           ) : null}
         </div>
       </ScrollArea>
-      <footer className="flex items-center justify-between border-t border-border/60 px-3 py-1.5 font-mono text-[.7rem] text-muted-foreground">
+      <footer className="flex items-center justify-between border-t border-border/60 px-3 py-1.5 font-mono text-2xs text-muted-foreground">
         <span className="flex items-center gap-2">
           {model.runningCount + model.waitingCount > 0 ? (
             <span className="text-info-foreground">
diff --git a/apps/web/src/components/BranchToolbar.tsx b/apps/web/src/components/BranchToolbar.tsx
index 912ee901eec8..60f529ebd911 100644
--- a/apps/web/src/components/BranchToolbar.tsx
+++ b/apps/web/src/components/BranchToolbar.tsx
@@ -185,7 +185,7 @@ const MobileRunContextSelector = memo(function MobileRunContextSelector({
       >
         <span
           data-composer-label-motion
-          className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+          className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
         >
           {autoEnvironmentLabel ??
             (showEnvironmentIndicator ? (activeEnvironment?.label ?? "Run on") : workspaceLabel)}
@@ -197,7 +197,7 @@ const MobileRunContextSelector = memo(function MobileRunContextSelector({
   if (isLocked) {
     return (
       <span
-        className="inline-flex h-7 min-w-0 max-w-[48%] flex-initial items-center justify-start gap-1 rounded-md border border-transparent px-[calc(--spacing(2)-1px)] font-normal text-muted-foreground/70 text-xs sm:h-6"
+        className="inline-flex h-7 min-w-0 max-w-[48%] flex-initial items-center justify-start gap-1 rounded-md border border-transparent px-1.75 font-normal text-muted-foreground/70 text-xs sm:h-6"
         data-composer-context-control
       >
         {triggerContent}
diff --git a/apps/web/src/components/BranchToolbarBranchSelector.tsx b/apps/web/src/components/BranchToolbarBranchSelector.tsx
index a548d414bcc8..17199bbf3374 100644
--- a/apps/web/src/components/BranchToolbarBranchSelector.tsx
+++ b/apps/web/src/components/BranchToolbarBranchSelector.tsx
@@ -757,7 +757,7 @@ export function BranchToolbarBranchSelector({
       >
         <div className="flex w-full min-w-0 items-center justify-between gap-2">
           <MiddleTruncate value={itemValue} className="flex-1" />
-          {badge && <span className="shrink-0 text-[10px] text-muted-foreground/45">{badge}</span>}
+          {badge && <span className="shrink-0 text-3xs text-muted-foreground/45">{badge}</span>}
         </div>
       </ComboboxItem>
     );
@@ -819,7 +819,7 @@ export function BranchToolbarBranchSelector({
             >
               <span
                 data-composer-label-motion
-                className="flex w-full max-w-[240px] transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+                className="flex w-full max-w-[240px] transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
               >
                 <MiddleTruncate value={triggerLabel} />
               </span>
diff --git a/apps/web/src/components/BranchToolbarEnvModeSelector.tsx b/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
index cb1faef9a50d..1d72ddf87e18 100644
--- a/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
+++ b/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
@@ -61,7 +61,7 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
       <Tooltip>
         <TooltipTrigger
           render={<span />}
-          className="inline-flex h-7 min-w-0 items-center gap-1 border border-transparent px-[calc(--spacing(2)-1px)] font-normal text-muted-foreground/70 text-xs sm:h-6"
+          className="inline-flex h-7 min-w-0 items-center gap-1 border border-transparent px-1.75 font-normal text-muted-foreground/70 text-xs sm:h-6"
           data-composer-context-control
         >
           {forceNewWorktree ? (
@@ -77,7 +77,7 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
           >
             <span
               data-composer-label-motion
-              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
             >
               {forceNewWorktree
                 ? resolveEnvModeLabel("worktree")
@@ -133,7 +133,7 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
           >
             <span
               data-composer-label-motion
-              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
             >
               <SelectValue />
             </span>
diff --git a/apps/web/src/components/BranchToolbarEnvironmentSelector.tsx b/apps/web/src/components/BranchToolbarEnvironmentSelector.tsx
index 8ab7577e8002..69062323ab3f 100644
--- a/apps/web/src/components/BranchToolbarEnvironmentSelector.tsx
+++ b/apps/web/src/components/BranchToolbarEnvironmentSelector.tsx
@@ -63,7 +63,7 @@ export const BranchToolbarEnvironmentSelector = memo(function BranchToolbarEnvir
       <Tooltip>
         <TooltipTrigger
           render={<span />}
-          className="inline-flex h-7 min-w-0 max-w-full items-center gap-1 border border-transparent px-[calc(--spacing(2)-1px)] font-normal text-muted-foreground/70 text-xs sm:h-6"
+          className="inline-flex h-7 min-w-0 max-w-full items-center gap-1 border border-transparent px-1.75 font-normal text-muted-foreground/70 text-xs sm:h-6"
           data-composer-context-control
         >
           <EnvironmentMachineIcon
@@ -76,7 +76,7 @@ export const BranchToolbarEnvironmentSelector = memo(function BranchToolbarEnvir
           >
             <span
               data-composer-label-motion
-              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
             >
               {activeEnvironment?.label ?? "Run on"}
             </span>
@@ -123,7 +123,7 @@ export const BranchToolbarEnvironmentSelector = memo(function BranchToolbarEnvir
           >
             <span
               data-composer-label-motion
-              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-[cubic-bezier(0.32,0.72,0,1)] group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
+              className="block w-full min-w-0 max-w-[240px] truncate transition-opacity duration-180 ease-drawer group-data-[compact]/composer-context:opacity-0 motion-reduce:transition-none"
             >
               <SelectValue />
             </span>
diff --git a/apps/web/src/components/ChatMarkdown.tsx b/apps/web/src/components/ChatMarkdown.tsx
index 8a174852ece2..5b6cdfde49d6 100644
--- a/apps/web/src/components/ChatMarkdown.tsx
+++ b/apps/web/src/components/ChatMarkdown.tsx
@@ -974,12 +974,12 @@ function MarkdownCodeBlock({
 
   return (
     <div
-      className="chat-markdown-codeblock my-[0.65rem] overflow-hidden rounded-[var(--radius)] border border-border/70 bg-secondary leading-snug dark:border-transparent dark:bg-input/32"
+      className="chat-markdown-codeblock my-[0.65rem] overflow-hidden rounded-lg border border-border/70 bg-secondary leading-snug dark:border-transparent dark:bg-input/32"
       data-language={language}
       data-wrap={wrapped ? "true" : "false"}
     >
       <div className="chat-markdown-codeblock-header flex items-center justify-between gap-2 pt-1.5 pr-1.5 pb-0 pl-3 select-none">
-        <span className="inline-flex min-w-0 items-center gap-[0.4rem] [font-family:var(--font-mono,ui-monospace,SFMono-Regular,monospace)] [font-size:0.6875rem]">
+        <span className="inline-flex min-w-0 items-center gap-1.5 font-mono text-2xs">
           <MarkdownCodeBlockTitleContent
             fenceTitle={fenceTitle}
             language={language}
@@ -2201,7 +2201,7 @@ const MarkdownFileLink = memo(function MarkdownFileLink({
       <TooltipPopup side="top" variant="code">
         {/* The full path: the chip already shows the shortened form, and a link
             to the workspace root collapses to a bare label that repeats it. */}
-        <div className="overflow-x-auto whitespace-nowrap [scrollbar-color:color-mix(in_srgb,var(--contrast-border)_78%,transparent)_transparent] [scrollbar-width:thin] [&::-webkit-scrollbar]:h-1.5 [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_srgb,var(--contrast-border)_78%,transparent)] [&::-webkit-scrollbar-track]:bg-transparent">
+        <div className="overflow-x-auto whitespace-nowrap scrollbar-thumb-border/78 scrollbar-track-transparent [scrollbar-width:thin] [&::-webkit-scrollbar]:h-1.5 [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-border/78 [&::-webkit-scrollbar-track]:bg-transparent">
           {targetPath}
         </div>
       </TooltipPopup>
diff --git a/apps/web/src/components/ChatView.tsx b/apps/web/src/components/ChatView.tsx
index 9af410f5722e..e5eb815ec9cb 100644
--- a/apps/web/src/components/ChatView.tsx
+++ b/apps/web/src/components/ChatView.tsx
@@ -1220,7 +1220,7 @@ const PersistentThreadTerminalDrawer = memo(function PersistentThreadTerminalDra
         "grid shrink-0 overflow-clip",
         active ? (visible ? "grid-rows-[1fr]" : "grid-rows-[0fr]") : "hidden",
         active &&
-          "[[data-panel-animations=true]_&]:transition-[grid-template-rows] [[data-panel-animations=true]_&]:[transition-duration:var(--panel-animation-duration)] [[data-panel-animations=true]_&]:ease-out",
+          "[[data-panel-animations=true]_&]:transition-[grid-template-rows] [[data-panel-animations=true]_&]:duration-(--panel-animation-duration) [[data-panel-animations=true]_&]:ease-out",
         active && visible && "[[data-panel-animations=true]_&]:starting:grid-rows-[0fr]!",
       )}
     >
@@ -9588,7 +9588,7 @@ export default function ChatView(props: ChatViewProps) {
           className={cn(
             "flex shrink-0",
             panelAnimationsActive &&
-              "motion-safe:transition-opacity motion-safe:[transition-duration:var(--panel-animation-duration)] motion-safe:ease-out",
+              "motion-safe:transition-opacity motion-safe:duration-(--panel-animation-duration) motion-safe:ease-out",
             rightPanelOpen ? "pointer-events-auto opacity-100" : "pointer-events-none opacity-0",
           )}
           inert={!rightPanelOpen}
@@ -10015,7 +10015,7 @@ export default function ChatView(props: ChatViewProps) {
             >
               <div
                 ref={attachDraftHeroTransitionGroupRef}
-                className="w-full ps-[calc(env(safe-area-inset-left)+0.75rem)] pe-[calc(env(safe-area-inset-right)+0.75rem)] sm:ps-[calc(env(safe-area-inset-left)+1.25rem)] sm:pe-[calc(env(safe-area-inset-right)+1.25rem)]"
+                className="w-full ps-(--workspace-gutter-start) pe-(--workspace-gutter-end)"
               >
                 <div
                   data-chat-composer-stack="true"
diff --git a/apps/web/src/components/ComposerPromptEditorTiptap.tsx b/apps/web/src/components/ComposerPromptEditorTiptap.tsx
index 50305ffdbef0..74e8736f04e7 100644
--- a/apps/web/src/components/ComposerPromptEditorTiptap.tsx
+++ b/apps/web/src/components/ComposerPromptEditorTiptap.tsx
@@ -190,7 +190,7 @@ function resolvedThemeFromDocument(): "light" | "dark" {
  * paints the editor's node selection over it.
  */
 const CHIP_NODE_SELECTION_CLASS_NAME =
-  "relative inline-flex select-none items-center align-middle leading-none data-[composer-chip-selected]:after:pointer-events-none data-[composer-chip-selected]:after:absolute data-[composer-chip-selected]:after:inset-0 data-[composer-chip-selected]:after:rounded-[6px] data-[composer-chip-selected]:after:bg-[Highlight] data-[composer-chip-selected]:after:opacity-30 data-[composer-chip-selected]:after:content-['']";
+  "relative inline-flex select-none items-center align-middle leading-none data-[composer-chip-selected]:after:pointer-events-none data-[composer-chip-selected]:after:absolute data-[composer-chip-selected]:after:inset-0 data-[composer-chip-selected]:after:rounded-sm data-[composer-chip-selected]:after:bg-[Highlight] data-[composer-chip-selected]:after:opacity-30 data-[composer-chip-selected]:after:content-['']";
 
 const ComposerMentionExtension = Node.create({
   name: "composer-mention",
@@ -1242,7 +1242,7 @@ function ComposerPromptEditorTiptapInner(props: ComposerPromptEditorProps) {
         <ComposerCitationCommentContext value={citationCommentActions}>
           <div
             className={cn(
-              "relative flow-root [font-family:var(--font-composer,var(--font-sans))] [font-size:var(--font-size-prompt,0.875rem)] [@media(max-width:39.999rem)_and_(pointer:coarse)]:[font-size:max(var(--font-size-prompt,1rem),16px)]",
+              "relative flow-root font-(family-name:--font-composer,var(--font-sans)) text-(length:--font-size-prompt,var(--text-sm)) max-sm:pointer-coarse:text-(length:--font-size-prompt-touch)",
               containerClassName,
             )}
           >
diff --git a/apps/web/src/components/ContextChip.tsx b/apps/web/src/components/ContextChip.tsx
index 7e9385295832..1d2642cb1cce 100644
--- a/apps/web/src/components/ContextChip.tsx
+++ b/apps/web/src/components/ContextChip.tsx
@@ -23,7 +23,7 @@ import { cn } from "~/lib/utils";
  * span with tabIndex for a tooltip) gets the focus outline.
  */
 const contextChipVariants = cva(
-  "inline-flex h-[1.41em] max-w-full items-center gap-[0.33em] rounded-[0.5em] border px-[0.5em] align-middle font-medium text-[0.86em] leading-none [&_svg]:block [&_svg]:size-[1.17em] [&_svg]:shrink-0 [&_svg]:self-center [button&,a&,[data-popup-open]&]:cursor-pointer [button&,a&]:transition-colors [button&,a&]:motion-reduce:transition-none focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-[var(--contrast-foreground)] disabled:cursor-default",
+  "inline-flex h-[1.41em] max-w-full items-center gap-[0.33em] rounded-[0.5em] border px-[0.5em] align-middle font-medium text-[0.86em] leading-none [&_svg]:block [&_svg]:size-[1.17em] [&_svg]:shrink-0 [&_svg]:self-center [button&,a&,[data-popup-open]&]:cursor-pointer [button&,a&]:transition-colors [button&,a&]:motion-reduce:transition-none focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-foreground disabled:cursor-default",
   {
     defaultVariants: { kind: "neutral" },
     variants: {
@@ -71,7 +71,7 @@ const contextChipVariants = cva(
           "citation",
         ],
         className:
-          "border-[color-mix(in_oklab,var(--context-chip-accent)_34%,var(--contrast-border))] bg-[color-mix(in_oklab,var(--context-chip-accent)_11%,transparent)] text-[color-mix(in_oklab,var(--context-chip-accent)_22%,var(--contrast-foreground))] [button:enabled&,a&]:hover:border-[color-mix(in_oklab,var(--context-chip-accent)_48%,var(--contrast-border))] [button:enabled&,a&]:hover:bg-[color-mix(in_oklab,var(--context-chip-accent)_17%,transparent)]",
+          "[--context-chip-border:color-mix(in_oklab,var(--context-chip-accent)_34%,var(--contrast-border))] [--context-chip-border-hover:color-mix(in_oklab,var(--context-chip-accent)_48%,var(--contrast-border))] [--context-chip-foreground:color-mix(in_oklab,var(--context-chip-accent)_22%,var(--contrast-foreground))] border-(--context-chip-border) bg-(--context-chip-accent)/11 text-(--context-chip-foreground) [button:enabled&,a&]:hover:border-(--context-chip-border-hover) [button:enabled&,a&]:hover:bg-(--context-chip-accent)/17",
       },
       // State colors win over any kind.
       { state: "unresolved", className: "text-foreground" },
@@ -115,7 +115,7 @@ function ContextChipLabel({ className, ...props }: React.ComponentProps<"span">)
 function ContextChipAction({ className, render, ...props }: useRender.ComponentProps<"button">) {
   const defaultProps = {
     className: cn(
-      "ml-[0.17em] inline-flex size-[1.17em] shrink-0 cursor-pointer items-center justify-center rounded-sm text-current transition-colors hover:bg-[color-mix(in_oklab,var(--context-chip-accent,var(--color-foreground))_17%,transparent)] focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring motion-reduce:transition-none [&_svg]:size-[0.85em]",
+      "ml-[0.17em] inline-flex size-[1.17em] shrink-0 cursor-pointer items-center justify-center rounded-sm text-current transition-colors hover:bg-(--context-chip-accent,var(--color-foreground))/17 focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring motion-reduce:transition-none [&_svg]:size-[0.85em]",
       className,
     ),
     "data-slot": "context-chip-action",
diff --git a/apps/web/src/components/DiffPanel.tsx b/apps/web/src/components/DiffPanel.tsx
index 41cc4c82fa0f..ea3f38f2fff0 100644
--- a/apps/web/src/components/DiffPanel.tsx
+++ b/apps/web/src/components/DiffPanel.tsx
@@ -765,7 +765,7 @@ export default function DiffPanel({
                   value={baseRefQuery}
                   onChange={(event) => setBaseRefQuery(event.target.value)}
                 />
-                <div className="grid shrink-0 grid-cols-[1rem_minmax(0,1fr)] items-center gap-2 border-b border-border/70 ps-3 pe-6.5 pt-2 pb-1.5 font-medium text-[10px] text-muted-foreground uppercase tracking-wide">
+                <div className="grid shrink-0 grid-cols-[1rem_minmax(0,1fr)] items-center gap-2 border-b border-border/70 ps-3 pe-6.5 pt-2 pb-1.5 font-medium text-3xs text-muted-foreground uppercase tracking-wide">
                   <span aria-hidden="true" />
                   <div className="grid min-w-0 grid-cols-[minmax(0,1fr)_2rem] items-center">
                     <span>Branch</span>
@@ -841,7 +841,7 @@ export default function DiffPanel({
           <DiffStatLabel
             additions={diffLineStat.additions}
             deletions={diffLineStat.deletions}
-            className="mr-1 text-[11px]"
+            className="mr-1 text-2xs"
             layout="inline"
           />
         ) : null}
@@ -992,14 +992,14 @@ export default function DiffPanel({
         <>
           <div className="flex min-h-0 min-w-0 flex-1 flex-col overflow-hidden bg-background">
             {isSelectedPatchTruncated && !lazySource && (
-              <p className="shrink-0 border-b border-border/70 bg-muted/40 px-3 py-1.5 text-[11px] text-muted-foreground">
+              <p className="shrink-0 border-b border-border/70 bg-muted/40 px-3 py-1.5 text-2xs text-muted-foreground">
                 This preview exceeds the size limit. Changes shown are incomplete.
                 {selectedGitSource?.files ? " Totals include all changes." : ""}
               </p>
             )}
             {selectedPatchError && !renderablePatch && (
               <div className="px-3">
-                <p className="mb-2 text-[11px] text-error/80">{selectedPatchError}</p>
+                <p className="mb-2 text-2xs text-error/80">{selectedPatchError}</p>
               </div>
             )}
             {!renderablePatch && !lazySource ? (
@@ -1181,12 +1181,12 @@ export default function DiffPanel({
             ) : (
               <div className="min-h-0 flex-1 overflow-auto p-2">
                 <div className="space-y-2">
-                  <p className="text-[11px] text-muted-foreground/75">
+                  <p className="text-2xs text-muted-foreground/75">
                     {renderablePatch?.kind === "raw" ? renderablePatch.reason : null}
                   </p>
                   <pre
                     className={cn(
-                      "max-h-[72vh] rounded-md border border-border/70 bg-background/70 p-3 font-mono text-[11px] leading-relaxed text-muted-foreground/90",
+                      "max-h-[72vh] rounded-md border border-border/70 bg-background/70 p-3 font-mono text-2xs leading-relaxed text-muted-foreground/90",
                       wordWrap
                         ? "overflow-auto whitespace-pre-wrap wrap-break-word"
                         : "overflow-auto",
diff --git a/apps/web/src/components/DiffPanelShell.tsx b/apps/web/src/components/DiffPanelShell.tsx
index 0b7da6ab635a..6f7f6e5c8f1f 100644
--- a/apps/web/src/components/DiffPanelShell.tsx
+++ b/apps/web/src/components/DiffPanelShell.tsx
@@ -13,7 +13,7 @@ function getDiffPanelHeaderRowClassName(mode: DiffPanelMode) {
     "flex items-center justify-between gap-2",
     mode === "embedded" ? "px-2" : "px-4",
     shouldUseDragRegion
-      ? "drag-region h-[var(--workspace-topbar-height)] border-b border-border wco:h-[env(titlebar-area-height)] wco:pr-[calc(100vw-env(titlebar-area-width)-env(titlebar-area-x)+1em)]"
+      ? "drag-region h-[var(--workspace-topbar-height)] border-b border-border wco:h-[env(titlebar-area-height)] wco:pr-(--workspace-native-controls-inset)"
       : "flex h-10 min-h-10 shrink-0 items-center border-b border-border/60 bg-background in-data-[preview-panel-mode=inline]:mb-3 in-data-[preview-panel-mode=inline]:h-7 in-data-[preview-panel-mode=inline]:min-h-7 in-data-[preview-panel-mode=inline]:border-b-transparent",
   );
 }
diff --git a/apps/web/src/components/LegacySidebar.tsx b/apps/web/src/components/LegacySidebar.tsx
index e49ff602a5aa..4b53c14c3ed5 100644
--- a/apps/web/src/components/LegacySidebar.tsx
+++ b/apps/web/src/components/LegacySidebar.tsx
@@ -234,7 +234,7 @@ const PROJECT_GROUPING_MODE_LABELS: Record<SidebarProjectGroupingMode, string> =
   separate: "Keep separate",
 };
 const SIDEBAR_ICON_ACTION_BUTTON_CLASS =
-  "inline-flex h-6 min-w-6 cursor-pointer items-center justify-center rounded-md px-[calc(--spacing(1)-1px)] text-icon-muted hover:text-foreground focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring";
+  "inline-flex h-6 min-w-6 cursor-pointer items-center justify-center rounded-md px-0.75 text-icon-muted hover:text-foreground focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring";
 
 function SidebarThreadDetailPrewarmer({ threadRef }: { readonly threadRef: ScopedThreadRef }) {
   useEnvironmentThread(threadRef.environmentId, threadRef.threadId);
@@ -850,7 +850,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: SidebarThreadRowP
                 data-thread-selection-safe
                 data-testid={`thread-archive-confirm-${thread.id}`}
                 aria-label={`Confirm archive ${thread.title}`}
-                className="absolute top-1/2 right-1 inline-flex h-5 -translate-y-1/2 cursor-pointer items-center rounded-md bg-destructive/12 px-2 text-[10px] font-medium text-destructive transition-colors hover:bg-destructive/18 focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-destructive/40"
+                className="absolute top-1/2 right-1 inline-flex h-5 -translate-y-1/2 cursor-pointer items-center rounded-md bg-destructive/12 px-2 text-3xs font-medium text-destructive transition-colors hover:bg-destructive/18 focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-destructive/40"
                 onPointerDown={stopPropagationOnPointerDown}
                 onClick={handleConfirmArchiveClick}
               >
@@ -920,7 +920,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: SidebarThreadRowP
                       render={
                         <span
                           aria-label={jumpLabel}
-                          className="inline-flex h-5 items-center rounded-full border border-border/80 bg-background/90 px-1.5 font-mono text-[10px] font-medium tracking-tight text-foreground shadow-sm"
+                          className="inline-flex h-5 items-center rounded-full border border-border/80 bg-background/90 px-1.5 font-mono text-3xs font-medium tracking-tight text-foreground shadow-sm"
                         />
                       }
                     >
@@ -930,7 +930,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: SidebarThreadRowP
                   </Tooltip>
                 ) : (
                   <span
-                    className={`text-[10px] tabular-nums ${
+                    className={`text-3xs tabular-nums ${
                       isHighlighted ? "text-foreground" : "text-secondary-label"
                     }`}
                   >
@@ -2410,7 +2410,7 @@ const SidebarProjectItem = memo(function SidebarProjectItem(props: SidebarProjec
               {project.displayName}
             </span>
             {project.groupedProjectCount > 1 ? (
-              <span className="shrink-0 text-secondary-label text-[10px]">
+              <span className="shrink-0 text-secondary-label text-3xs">
                 {project.groupedProjectCount} projects
               </span>
             ) : null}
diff --git a/apps/web/src/components/ProjectFavicon.tsx b/apps/web/src/components/ProjectFavicon.tsx
index cf88d4965f09..482de3bb9f36 100644
--- a/apps/web/src/components/ProjectFavicon.tsx
+++ b/apps/web/src/components/ProjectFavicon.tsx
@@ -19,7 +19,7 @@ const DynamicIcon = lazy(() =>
 );
 
 function DynamicProjectIconFallback() {
-  return <FolderCodeIcon className="size-full text-[inherit]" />;
+  return <FolderCodeIcon className="size-full text-inherit" />;
 }
 
 // The slice of a project that decides its icon. Every surface must pass the
@@ -176,7 +176,7 @@ function ProjectFaviconImage({
         <img
           src={displayedSrc}
           alt=""
-          className={cn("size-3.5 shrink-0 rounded-[37.5%] object-contain", className)}
+          className={cn("size-3.5 shrink-0 rounded-[25%] object-contain", className)}
           onError={() => handleLoadError(displayedSrc)}
         />
       ) : null}
diff --git a/apps/web/src/components/PullRequestContextDetails.tsx b/apps/web/src/components/PullRequestContextDetails.tsx
index cb2aae9ac52d..6462299c4093 100644
--- a/apps/web/src/components/PullRequestContextDetails.tsx
+++ b/apps/web/src/components/PullRequestContextDetails.tsx
@@ -15,7 +15,7 @@ export function PullRequestContextDetails({ metadata }: { metadata: PullRequestC
         <span className={state.toneClassName}>{state.label}</span>
       </div>
       <div className="wrap-break-word text-foreground">{metadata.title}</div>
-      <div className="flex min-w-0 items-center gap-1 text-secondary-label text-[10px]">
+      <div className="flex min-w-0 items-center gap-1 text-secondary-label text-3xs">
         <code className="truncate">{metadata.headBranch}</code>
         <ArrowRightIcon className="size-3 shrink-0" aria-hidden="true" />
         <code className="truncate">{metadata.baseBranch}</code>
diff --git a/apps/web/src/components/RightPanelTabs.tsx b/apps/web/src/components/RightPanelTabs.tsx
index 33a1c9b05c3a..001342e48262 100644
--- a/apps/web/src/components/RightPanelTabs.tsx
+++ b/apps/web/src/components/RightPanelTabs.tsx
@@ -488,7 +488,7 @@ function RightPanelEmptyState(props: {
         {action.badgeCount > 0 ? (
           <span
             aria-hidden
-            className="absolute -top-1.5 -right-2 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-[9px] font-semibold tabular-nums text-white"
+            className="absolute -top-1.5 -right-2 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-3xs font-semibold tabular-nums text-white"
           >
             {action.badgeCount}
           </span>
@@ -505,13 +505,13 @@ function RightPanelEmptyState(props: {
       aria-label="Open a surface"
       data-surface-launcher-keys={availableActions.map((action) => action.shortcut).join("")}
       className={cn(
-        "flex min-h-0 flex-1 items-center justify-center overflow-y-auto px-6 pt-6 outline-none",
+        "flex min-h-0 flex-1 items-center justify-center overflow-y-auto px-6 outline-none",
         // The panel topbar sits above this container; matching bottom padding
         // keeps the list centered against the full panel, not the leftover.
-        "pb-[calc(var(--workspace-topbar-height)+--spacing(6))]",
+        "pb-(--workspace-topbar-height)",
       )}
     >
-      <div className="w-full max-w-xs">
+      <div className="w-full max-w-xs py-6">
         <h3 className="mb-3 text-center font-medium text-foreground text-sm">Open a surface</h3>
         <div className="flex flex-col gap-0.5">
           {actions.map((action) =>
@@ -534,7 +534,7 @@ function RightPanelEmptyState(props: {
                   type="button"
                   onClick={action.onClick}
                   className={cn(
-                    "flex h-8 w-full cursor-pointer items-center gap-2.5 rounded-[var(--control-radius)] px-2.5 text-left text-sm transition-colors group-hover:bg-accent/60",
+                    "flex h-8 w-full cursor-pointer items-center gap-2.5 rounded-(--control-radius) px-2.5 text-left text-sm transition-colors group-hover:bg-accent/60",
                     isHighlighted(action) && "bg-accent/60",
                   )}
                 >
@@ -589,7 +589,7 @@ function RightPanelEmptyState(props: {
                   <div
                     tabIndex={0}
                     aria-disabled="true"
-                    className="flex h-8 w-full cursor-default items-center gap-2.5 rounded-[var(--control-radius)] px-2.5 text-left text-sm opacity-50"
+                    className="flex h-8 w-full cursor-default items-center gap-2.5 rounded-(--control-radius) px-2.5 text-left text-sm opacity-50"
                   >
                     {actionIcon(action, "size-4")}
                     <span className="min-w-0 flex-1 truncate">{action.label}</span>
@@ -1114,10 +1114,7 @@ export function RightPanelTabs(props: RightPanelTabsProps) {
           // controls a few pixels higher and the cluster jumps on open.
           props.mode === "inline" && !props.layoutControls ? "pr-28" : "pr-3",
           ownsDesktopTitleBar && "drag-region",
-          ownsDesktopTitleBar &&
-            (props.layoutControls
-              ? "wco:pr-[var(--workspace-native-controls-inset)]"
-              : "wco:pr-[calc(var(--workspace-native-controls-inset)+6rem)]"),
+          ownsDesktopTitleBar && "wco:pr-(--workspace-native-controls-inset)",
           props.mode === "inline" && props.maximized && COLLAPSED_SIDEBAR_TITLEBAR_INSET_CLASS,
         )}
         data-right-panel-tabbar
@@ -1395,6 +1392,10 @@ export function RightPanelTabs(props: RightPanelTabsProps) {
           </div>
         ) : null}
         {props.layoutControls}
+        {ownsDesktopTitleBar && !props.layoutControls ? (
+          // Keeps the tabs clear of the window controls when the layout toggles live elsewhere.
+          <span aria-hidden className="hidden w-24 shrink-0 wco:block" />
+        ) : null}
         {ownsDesktopTitleBar ? (
           <span
             aria-hidden
diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index a06413fd043b..9f73f09eff68 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -283,7 +283,7 @@ function JumpHintBadge(props: { label: string }) {
   return (
     <span
       aria-hidden
-      className="pointer-events-none absolute right-1.5 top-1/2 z-10 inline-flex h-5 -translate-y-1/2 items-center rounded-full border border-border/80 bg-background/95 px-1.5 font-mono text-[10px] font-medium tracking-tight text-foreground shadow-sm"
+      className="pointer-events-none absolute right-1.5 top-1/2 z-10 inline-flex h-5 -translate-y-1/2 items-center rounded-full border border-border/80 bg-background/95 px-1.5 font-mono text-3xs font-medium tracking-tight text-foreground shadow-sm"
     >
       {props.label}
     </span>
@@ -760,7 +760,7 @@ const SidebarDraftRow = memo(function SidebarDraftRow(props: {
         onClick={handleActivate}
         onKeyDown={handleKeyDown}
       >
-        <div className="relative z-10 h-[4.875rem] px-[var(--sidebar-row-content-inset)] py-[var(--sidebar-content-inset)]">
+        <div className="relative z-10 h-[4.875rem] px-(--sidebar-row-content-inset) py-(--sidebar-content-inset)">
           <div className="flex h-5 min-w-0 items-center gap-1.5">
             <SquarePenIcon aria-hidden className={draftPenClassName} />
             {props.project ? (
@@ -1408,7 +1408,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: {
     // keeps the hover color applied, so both the tint and the solid sidebar
     // color are stacked as background images.
     props.sortable?.isDragging &&
-      "bg-[linear-gradient(var(--sidebar-row-active),var(--sidebar-row-active)),linear-gradient(var(--sidebar),var(--sidebar))] text-sidebar-foreground opacity-100 shadow-lg",
+      "bg-sidebar bg-linear-to-b from-sidebar-row-active to-sidebar-row-active text-sidebar-foreground opacity-100 shadow-lg",
   );
   // dnd-kit props for the row root. Same bag on both variants: every row in
   // the list translates around the gap as the drag passes it.
@@ -1433,7 +1433,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: {
     sortable?.isDragging && props.dropVerb !== null ? (
       <span
         role="status"
-        className="pointer-events-none ml-auto inline-flex h-5 shrink-0 items-center gap-1 rounded-sm border border-primary/40 bg-primary/10 px-1.5 text-[11px] font-medium text-primary"
+        className="pointer-events-none ml-auto inline-flex h-5 shrink-0 items-center gap-1 rounded-sm border border-primary/40 bg-primary/10 px-1.5 text-2xs font-medium text-primary"
       >
         {dropVerbBadge[props.dropVerb]}
       </span>
@@ -1478,7 +1478,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: {
                     ? "text-muted-foreground"
                     : "text-secondary-label/70",
             ),
-        isRegeneratingTitle && "opacity-[0.55]",
+        isRegeneratingTitle && "opacity-55",
       )}
     >
       {thread.title}
@@ -1745,7 +1745,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: {
             />
           }
         >
-          <div className="relative z-10 h-[4.875rem] px-[var(--sidebar-row-content-inset)] py-[var(--sidebar-content-inset)]">
+          <div className="relative z-10 h-[4.875rem] px-(--sidebar-row-content-inset) py-(--sidebar-content-inset)">
             <div className="flex h-5 min-w-0 items-center gap-1.5">
               {draftIndicator}
               {props.project ? (
@@ -1956,7 +1956,7 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: {
                       showBadge={showInstanceBadge}
                       // Glyph dims, badge stays saturated; offset matches the composer trigger.
                       iconClassName="size-3.5 opacity-60"
-                      badgeClassName="right-[-0.1875rem] bottom-[-0.1875rem] h-3 min-w-3 px-0.5 text-[7px]"
+                      badgeClassName="right-[-0.1875rem] bottom-[-0.1875rem] h-3 min-w-3 px-0.5 text-3xs"
                     />
                   </span>
                 ) : null}
@@ -4912,7 +4912,7 @@ export default function Sidebar() {
                   <button
                     type="button"
                     onClick={openAddProjectCommandPalette}
-                    className="inline-flex cursor-pointer items-center gap-1.5 rounded-md border border-sidebar-border px-2.5 py-1 text-[11px] font-medium text-sidebar-muted-foreground transition-colors hover:bg-sidebar-row-hover hover:text-sidebar-foreground"
+                    className="inline-flex cursor-pointer items-center gap-1.5 rounded-md border border-sidebar-border px-2.5 py-1 text-2xs font-medium text-sidebar-muted-foreground transition-colors hover:bg-sidebar-row-hover hover:text-sidebar-foreground"
                   >
                     <PlusIcon className="-mx-0.5 size-3" />
                     Add project
diff --git a/apps/web/src/components/SlowRpcRequestToastCoordinator.tsx b/apps/web/src/components/SlowRpcRequestToastCoordinator.tsx
index f5391c13abaf..5144b6f93a14 100644
--- a/apps/web/src/components/SlowRpcRequestToastCoordinator.tsx
+++ b/apps/web/src/components/SlowRpcRequestToastCoordinator.tsx
@@ -22,7 +22,7 @@ function SlowRequestDetails({ requests }: { requests: ReadonlyArray<SlowRpcAckRe
           key={request.requestId}
         >
           <div className="wrap-break-word font-medium text-foreground">{request.tag}</div>
-          <div className="mt-0.5 text-[10px] opacity-75">
+          <div className="mt-0.5 text-3xs opacity-75">
             Started {new Date(request.startedAt).toLocaleTimeString()}
           </div>
         </li>
diff --git a/apps/web/src/components/ThreadStatusIndicators.tsx b/apps/web/src/components/ThreadStatusIndicators.tsx
index 29020f4975a3..b8d8a00ae8bb 100644
--- a/apps/web/src/components/ThreadStatusIndicators.tsx
+++ b/apps/web/src/components/ThreadStatusIndicators.tsx
@@ -328,7 +328,7 @@ export function ThreadPullRequestsMiniList({
               {snapshot?.title ?? line.link.repository}
             </span>
             {line.stack ? (
-              <span className="ml-auto shrink-0 pl-1 text-[10px]">
+              <span className="ml-auto shrink-0 pl-1 text-3xs">
                 {line.stack.kind === "native" ? "stack" : "chain"} · {line.stack.size}
               </span>
             ) : null}
@@ -463,7 +463,7 @@ export function ThreadStatusLabel({
         render={
           <span
             aria-label={status.label}
-            className={`inline-flex items-center gap-1 text-[10px] ${status.colorClass}`}
+            className={`inline-flex items-center gap-1 text-3xs ${status.colorClass}`}
           />
         }
       >
diff --git a/apps/web/src/components/ThreadTerminalDrawer.tsx b/apps/web/src/components/ThreadTerminalDrawer.tsx
index e86a100e0563..b34b8a60b12f 100644
--- a/apps/web/src/components/ThreadTerminalDrawer.tsx
+++ b/apps/web/src/components/ThreadTerminalDrawer.tsx
@@ -981,7 +981,7 @@ export function TerminalViewport({
     <div
       ref={containerRef}
       tabIndex={-1}
-      className="relative h-full w-full overflow-hidden bg-[var(--terminal-background)]"
+      className="relative h-full w-full overflow-hidden bg-(--terminal-background)"
     />
   );
 }
@@ -1490,7 +1490,7 @@ export default function ThreadTerminalDrawer({
       <div className="min-h-0 w-full flex-1">
         <div
           className={cn(
-            "flex h-full min-h-0 bg-[var(--terminal-background)]",
+            "flex h-full min-h-0 bg-(--terminal-background)",
             hasTerminalSidebar && "gap-1.5",
           )}
         >
@@ -1653,7 +1653,7 @@ export default function ThreadTerminalDrawer({
                       {showGroupHeaders && (
                         <button
                           type="button"
-                          className={`flex h-[22px] w-full cursor-pointer items-center gap-1 rounded px-1.5 text-[11px] ${
+                          className={`flex h-[22px] w-full cursor-pointer items-center gap-1 rounded px-1.5 text-2xs ${
                             isGroupActive
                               ? "bg-accent/50 text-foreground"
                               : "text-muted-foreground hover:bg-accent/40 hover:text-foreground"
@@ -1662,7 +1662,7 @@ export default function ThreadTerminalDrawer({
                         >
                           <GroupIcon className="size-3 shrink-0" />
                           <span className="min-w-0 flex-1 truncate text-left">{groupLabel}</span>
-                          <span className="text-muted-foreground/70 text-[10px] tabular-nums">
+                          <span className="text-muted-foreground/70 text-3xs tabular-nums">
                             {terminalCount}
                           </span>
                         </button>
diff --git a/apps/web/src/components/WorkspaceBreadcrumb.tsx b/apps/web/src/components/WorkspaceBreadcrumb.tsx
index 015e381aa251..2d5729cb7d15 100644
--- a/apps/web/src/components/WorkspaceBreadcrumb.tsx
+++ b/apps/web/src/components/WorkspaceBreadcrumb.tsx
@@ -33,7 +33,7 @@ export function WorkspaceBreadcrumbText({ children, className, ...props }: Compo
       // Center the capital letters with adjacent icons, not the font's leading.
       // Padding preserves accents and descenders when a label is truncated.
       className={cn(
-        "block min-w-0 truncate [text-box:trim-both_cap_alphabetic] supports-[text-box:trim-both_cap_alphabetic]:py-[0.5em]",
+        "block min-w-0 truncate [text-box:trim-both_cap_alphabetic] supports-[text-box:trim-both_cap_alphabetic]:py-1.5",
         className,
       )}
       {...props}
diff --git a/apps/web/src/components/WorkspacePageHeader.tsx b/apps/web/src/components/WorkspacePageHeader.tsx
index 5d98b80760ac..a484b4497539 100644
--- a/apps/web/src/components/WorkspacePageHeader.tsx
+++ b/apps/web/src/components/WorkspacePageHeader.tsx
@@ -16,9 +16,9 @@ export function WorkspacePageHeader({
   return (
     <header
       className={cn(
-        "flex h-[var(--workspace-topbar-height)] min-h-[var(--workspace-topbar-height)] shrink-0 items-center gap-3 pl-[calc(env(safe-area-inset-left)+0.75rem)] pr-[calc(env(safe-area-inset-right)+0.75rem)] [[data-panel-animations=true]_&]:motion-safe:transition-[padding-left,padding-right] [[data-panel-animations=true]_&]:motion-safe:[transition-duration:var(--panel-animation-duration)] [[data-panel-animations=true]_&]:motion-safe:ease-out sm:pl-[calc(env(safe-area-inset-left)+1.25rem)] sm:pr-[calc(env(safe-area-inset-right)+1.25rem)]",
+        "flex h-[var(--workspace-topbar-height)] min-h-[var(--workspace-topbar-height)] shrink-0 items-center gap-3 pl-(--workspace-gutter-start) pr-(--workspace-gutter-end) [[data-panel-animations=true]_&]:motion-safe:transition-[padding-left,padding-right] [[data-panel-animations=true]_&]:motion-safe:duration-(--panel-animation-duration) [[data-panel-animations=true]_&]:motion-safe:ease-out",
         electron && "drag-region",
-        reserveNativeControls && "wco:pr-[var(--workspace-native-controls-inset)]",
+        reserveNativeControls && "wco:pr-(--workspace-native-controls-inset)",
         COLLAPSED_SIDEBAR_TITLEBAR_INSET_CLASS,
         className,
       )}
diff --git a/apps/web/src/components/auth/AuthSurfaceShell.tsx b/apps/web/src/components/auth/AuthSurfaceShell.tsx
index ed27bd482a5d..de8939dce372 100644
--- a/apps/web/src/components/auth/AuthSurfaceShell.tsx
+++ b/apps/web/src/components/auth/AuthSurfaceShell.tsx
@@ -27,7 +27,7 @@ export function AuthSurfaceShell({ children }: { readonly children: ReactNode })
           )}
           <div className="absolute inset-0 bg-[linear-gradient(to_bottom,transparent_20%,rgba(7,18,55,0.46)_100%)]" />
           <div className="relative h-full p-5 sm:p-6">
-            <p className="text-[10px] font-semibold tracking-[0.2em] text-white/80 uppercase">
+            <p className="text-3xs font-semibold tracking-widest text-white/80 uppercase">
               {APP_DISPLAY_NAME}
             </p>
           </div>
diff --git a/apps/web/src/components/chat/AssistantCitationChip.tsx b/apps/web/src/components/chat/AssistantCitationChip.tsx
index d838c53d27d2..6baf14b18887 100644
--- a/apps/web/src/components/chat/AssistantCitationChip.tsx
+++ b/apps/web/src/components/chat/AssistantCitationChip.tsx
@@ -110,7 +110,7 @@ export function AssistantCitationChip({
   const composerSourceLink = (
     <Link
       {...sourceLinkProps}
-      className="inline-flex h-full min-w-0 items-center gap-[0.33em] rounded-sm text-inherit no-underline focus-visible:outline-2 focus-visible:outline-[var(--contrast-foreground)]"
+      className="inline-flex h-full min-w-0 items-center gap-[0.33em] rounded-sm text-inherit no-underline focus-visible:outline-2 focus-visible:outline-foreground"
       aria-label={`View cited assistant text: ${label}`}
     >
       <QuoteIcon aria-hidden="true" />
@@ -120,7 +120,7 @@ export function AssistantCitationChip({
   const chatSourceLink = (
     <Link
       {...sourceLinkProps}
-      className="inline-flex h-full min-w-0 items-center gap-[0.33em] rounded-sm text-inherit no-underline hover:bg-[color-mix(in_oklab,var(--context-chip-accent)_17%,transparent)] focus-visible:outline-2 focus-visible:outline-[var(--contrast-foreground)]"
+      className="inline-flex h-full min-w-0 items-center gap-[0.33em] rounded-sm text-inherit no-underline hover:bg-(--context-chip-accent)/17 focus-visible:outline-2 focus-visible:outline-foreground"
       aria-label={`View cited assistant text: ${label}`}
     >
       <QuoteIcon aria-hidden="true" />
diff --git a/apps/web/src/components/chat/ChangedFilesTree.tsx b/apps/web/src/components/chat/ChangedFilesTree.tsx
index db3615093cb0..e65e5c7c6fe5 100644
--- a/apps/web/src/components/chat/ChangedFilesTree.tsx
+++ b/apps/web/src/components/chat/ChangedFilesTree.tsx
@@ -54,7 +54,7 @@ export const ChangedFilesCard = memo(function ChangedFilesCard(props: {
     >
       <div
         data-changed-files-header=""
-        className="sticky top-2 z-10 flex items-center justify-between gap-2 rounded-t-lg bg-secondary px-3 py-2 dark:bg-[color-mix(in_srgb,var(--input)_20%,var(--background))]"
+        className="sticky top-2 z-10 flex items-center justify-between gap-2 rounded-t-lg bg-secondary px-3 py-2 dark:bg-background dark:bg-linear-to-b dark:from-input/20 dark:to-input/20"
       >
         <div className="flex min-w-0 flex-wrap items-center gap-x-3 gap-y-1 text-xs font-medium text-foreground">
           <span>
@@ -206,11 +206,11 @@ export const ChangedFilesTree = memo(function ChangedFilesTree(props: {
             ) : (
               <FolderClosedIcon className="size-3.5 shrink-0 text-muted-foreground/75" />
             )}
-            <span className="truncate font-mono text-[11px] text-muted-foreground/90 group-hover:text-foreground/90">
+            <span className="truncate font-mono text-2xs text-muted-foreground/90 group-hover:text-foreground/90">
               {node.name}
             </span>
             {hasNonZeroStat(node.stat) && (
-              <span className="ml-auto shrink-0 font-mono text-[10px] tabular-nums">
+              <span className="ml-auto shrink-0 font-mono text-3xs tabular-nums">
                 <DiffStatLabel additions={node.stat.additions} deletions={node.stat.deletions} />
               </span>
             )}
@@ -251,7 +251,7 @@ export const ChangedFilesTree = memo(function ChangedFilesTree(props: {
           <MiddleTruncate value={node.name} />
         </span>
         {node.stat && (
-          <span className="ml-auto shrink-0 font-mono text-[10px] tabular-nums">
+          <span className="ml-auto shrink-0 font-mono text-3xs tabular-nums">
             <DiffStatLabel additions={node.stat.additions} deletions={node.stat.deletions} />
           </span>
         )}
diff --git a/apps/web/src/components/chat/ChatComposer.tsx b/apps/web/src/components/chat/ChatComposer.tsx
index c5d1d01dad60..f9a37ace0cf0 100644
--- a/apps/web/src/components/chat/ChatComposer.tsx
+++ b/apps/web/src/components/chat/ChatComposer.tsx
@@ -381,7 +381,7 @@ function SnapShotAttachmentFrame({
       className={cn(
         animateArrival &&
           !animationId &&
-          "origin-center transition-[opacity,scale] duration-300 ease-[cubic-bezier(.2,.8,.2,1)] starting:scale-95 starting:opacity-0 motion-reduce:transition-none motion-reduce:starting:scale-100 motion-reduce:starting:opacity-100",
+          "origin-center transition-[opacity,scale] duration-300 ease-drawer starting:scale-95 starting:opacity-0 motion-reduce:transition-none motion-reduce:starting:scale-100 motion-reduce:starting:opacity-100",
         className,
       )}
       {...props}
@@ -6365,7 +6365,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
             data-chat-composer-surface="true"
             data-chat-composer-mobile-collapsed={isComposerCollapsedMobile ? "true" : "false"}
             className={cn(
-              "rounded-[20px] transition-[background-color] duration-200",
+              "rounded-3xl transition-[background-color] duration-200",
               isDragOverComposer ? "bg-accent/45 ring-1 ring-primary/70" : null,
               projectSelectionRequired ? "opacity-75" : null,
               composerProviderState.composerSurfaceClassName,
@@ -6377,7 +6377,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                   type="button"
                   data-chat-composer-transition-prompt="true"
                   className={cn(
-                    "min-w-0 flex-1 truncate bg-transparent p-0 text-left text-[14px] focus:outline-none",
+                    "min-w-0 flex-1 truncate bg-transparent p-0 text-left text-sm focus:outline-none",
                     (activePendingProgress ? activePendingProgress.customAnswer : prompt.trim())
                       ? "text-foreground"
                       : "text-placeholder",
@@ -6477,7 +6477,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                       "mb-3 flex max-w-full gap-2",
                       pendingSnapShotIds.length > 0 ||
                         expandedComposerImages.some((image) => image.source?.kind === "snap-shot")
-                        ? "snap-x snap-proximity overflow-x-auto overscroll-x-contain pb-1 [scrollbar-color:color-mix(in_srgb,var(--contrast-foreground)_18%,transparent)_transparent] [scrollbar-width:thin] [&::-webkit-scrollbar]:h-2.5 [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-3 [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_srgb,var(--contrast-foreground)_18%,transparent)] [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb:hover]:bg-[color-mix(in_srgb,var(--contrast-foreground)_28%,transparent)] [&::-webkit-scrollbar-track]:mx-1 [&::-webkit-scrollbar-track]:bg-transparent"
+                        ? "snap-x snap-proximity overflow-x-auto overscroll-x-contain pb-1 scrollbar-thumb-foreground/18 scrollbar-track-transparent [scrollbar-width:thin] [&::-webkit-scrollbar]:h-2.5 [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:border-3 [&::-webkit-scrollbar-thumb]:border-transparent [&::-webkit-scrollbar-thumb]:bg-foreground/18 [&::-webkit-scrollbar-thumb]:bg-clip-content [&::-webkit-scrollbar-thumb:hover]:bg-foreground/28 [&::-webkit-scrollbar-track]:mx-1 [&::-webkit-scrollbar-track]:bg-transparent"
                         : "flex-wrap",
                     )}
                   >
@@ -6532,14 +6532,14 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                                   alt={image.name}
                                   className="h-full w-full object-cover"
                                   fallback={
-                                    <span className="flex h-full items-center justify-center px-1 text-[10px] text-secondary-label">
+                                    <span className="flex h-full items-center justify-center px-1 text-3xs text-secondary-label">
                                       {image.name}
                                     </span>
                                   }
                                 />
                               </button>
                             ) : (
-                              <div className="flex h-full w-full items-center justify-center px-1 text-center text-[10px] text-secondary-label">
+                              <div className="flex h-full w-full items-center justify-center px-1 text-center text-3xs text-secondary-label">
                                 {image.name}
                               </div>
                             )}
@@ -6572,7 +6572,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                               </Tooltip>
                             )}
                             {upload?.status === "uploading" && (
-                              <span className="pointer-events-none absolute inset-x-0 bottom-0 bg-background/85 px-1 text-center text-[10px] text-foreground">
+                              <span className="pointer-events-none absolute inset-x-0 bottom-0 bg-background/85 px-1 text-center text-3xs text-foreground">
                                 {formatAttachmentUploadProgress(upload.progress)}
                               </span>
                             )}
@@ -6671,7 +6671,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                             <PlayIcon className="relative z-10 size-4 fill-current drop-shadow-md" />
                           </button>
                           {upload?.status === "uploading" && (
-                            <span className="pointer-events-none absolute inset-x-0 bottom-0 bg-background/85 px-1 text-center text-[10px] text-foreground">
+                            <span className="pointer-events-none absolute inset-x-0 bottom-0 bg-background/85 px-1 text-center text-3xs text-foreground">
                               {formatAttachmentUploadProgress(upload.progress)}
                             </span>
                           )}
diff --git a/apps/web/src/components/chat/ChatHeader.tsx b/apps/web/src/components/chat/ChatHeader.tsx
index d03b7b613eb1..bbe014ddbd06 100644
--- a/apps/web/src/components/chat/ChatHeader.tsx
+++ b/apps/web/src/components/chat/ChatHeader.tsx
@@ -494,8 +494,8 @@ export const ChatHeader = memo(function ChatHeader({
           "flex shrink-0 items-center justify-end gap-2 @3xl/header-actions:gap-3",
           // Reserve two panel toggles plus their 4px gaps and 1px edge inset.
           // The page header adds 8px more right padding at sm.
-          rightPanelOpen ? "pr-0" : "pr-[calc(--spacing(18)+1px)] sm:pr-[calc(--spacing(14)+1px)]",
-          "[[data-panel-animations=true]_&]:motion-safe:transition-[padding-right] [[data-panel-animations=true]_&]:motion-safe:[transition-duration:var(--panel-animation-duration)] [[data-panel-animations=true]_&]:motion-safe:ease-out",
+          rightPanelOpen ? "pr-0" : "pr-18.25 sm:pr-14.25",
+          "[[data-panel-animations=true]_&]:motion-safe:transition-[padding-right] [[data-panel-animations=true]_&]:motion-safe:duration-(--panel-animation-duration) [[data-panel-animations=true]_&]:motion-safe:ease-out",
         )}
       >
         <Menu open={actionsCollapsed && actionsOpen} onOpenChange={setActionsOpen}>
diff --git a/apps/web/src/components/chat/ComposerBanner.tsx b/apps/web/src/components/chat/ComposerBanner.tsx
index 384ca66a9096..78753c36097b 100644
--- a/apps/web/src/components/chat/ComposerBanner.tsx
+++ b/apps/web/src/components/chat/ComposerBanner.tsx
@@ -51,17 +51,17 @@ function Surface({
         surfaceColors,
         "relative isolate border-0 bg-transparent shadow-none [--chat-composer-attached-tint:transparent]",
         variantColors[variant],
+        // The mask cut-off (1rem) bleeds one pixel past the seam (1rem + 1px): Chromium
+        // drops the last device-pixel row of a filtered backdrop when the cut-off lands
+        // off the device-pixel grid, and the composer's surface starts exactly there.
+        // The composer's own glass covers the extra row, so the overlap never shows.
         placement === "attached"
-          ? "[--chat-composer-attachment-overlap:calc(1rem+1px)] before:rounded-t-[16px]"
-          : "[--chat-composer-attachment-overlap:0px] before:rounded-[1rem]",
+          ? "[--chat-composer-attachment-overlap:calc(1rem+1px)] before:rounded-t-2xl before:mask-t-from-transparent before:mask-t-from-4 before:mask-t-to-black before:mask-t-to-4"
+          : "[--chat-composer-attachment-overlap:0px] before:rounded-2xl",
         "before:pointer-events-none before:absolute before:inset-0 before:-z-1 before:border before:border-(--chat-composer-attached-outline)",
-        "before:bg-[color-mix(in_srgb,var(--chat-composer-attached-surface)_var(--glass-opacity),transparent)] before:bg-[linear-gradient(var(--chat-composer-attached-tint),var(--chat-composer-attached-tint))] before:backdrop-blur-(--glass-blur) before:backdrop-saturate-(--glass-saturation)",
-        // The mask cut-off bleeds one pixel past the seam: Chromium drops the last
-        // device-pixel row of a filtered backdrop when the cut-off lands off the
-        // device-pixel grid, and the composer's surface starts exactly there. The
-        // composer's own glass covers the extra row, so the overlap never shows.
-        "before:mask-[linear-gradient(to_top,transparent_0_calc(var(--chat-composer-attachment-overlap)-1px),black_calc(var(--chat-composer-attachment-overlap)-1px))] before:shadow-[0_12px_28px_-18px_rgb(0_0_0/40%)] dark:before:shadow-[0_14px_32px_-18px_rgb(0_0_0/75%)]",
-        "dark:supports-[(backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px))]:before:bg-[linear-gradient(var(--chat-composer-attached-tint),var(--chat-composer-attached-tint)),linear-gradient(to_top,transparent_0_var(--chat-composer-attachment-overlap),rgb(0_0_0/18%)_var(--chat-composer-attachment-overlap),transparent_calc(var(--chat-composer-attachment-overlap)+10px))]",
+        "before:bg-(--chat-composer-attached-surface)/(--glass-opacity) before:bg-linear-to-b before:from-(--chat-composer-attached-tint) before:to-(--chat-composer-attached-tint) before:backdrop-blur-(--glass-blur) before:backdrop-saturate-(--glass-saturation)",
+        "before:shadow-composer dark:before:shadow-composer-dark",
+        "dark:supports-[(backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px))]:before:bg-composer-seam-above",
         "not-supports-[((backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px)))]:before:bg-(--chat-composer-attached-surface)",
         className,
       )}
@@ -91,8 +91,8 @@ function Peek({
       className={cn(
         surfaceColors,
         neutralOutline,
-        "absolute inset-x-0 bottom-0 z-0 mx-auto h-3 w-[96%] cursor-pointer rounded-t-2xl border border-b-0 shadow-[0_6px_18px_rgb(0_0_0/6%)]",
-        "bg-[color-mix(in_srgb,var(--chat-composer-attached-surface)_var(--glass-opacity),transparent)] backdrop-blur-(--glass-blur) backdrop-saturate-(--glass-saturation)",
+        "absolute inset-x-0 bottom-0 z-0 mx-auto h-3 w-[96%] cursor-pointer rounded-t-2xl border border-b-0 shadow-md",
+        "bg-(--chat-composer-attached-surface)/(--glass-opacity) backdrop-blur-(--glass-blur) backdrop-saturate-(--glass-saturation)",
         "not-supports-[((backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px)))]:bg-(--chat-composer-attached-surface)",
         "transition-opacity duration-150 ease-out focus-visible:outline-2 focus-visible:outline-ring",
         peekBorder[variant],
@@ -161,7 +161,7 @@ function Root({
   return (
     <Surface
       className={cn(
-        "min-w-0 px-1 pt-(--composer-banner-padding-block) pb-[calc(var(--chat-composer-attachment-overlap)+var(--composer-banner-padding-block))] text-xs/4 [--composer-banner-icon-column:--spacing(7)] [--composer-banner-padding-block:--spacing(1)] sm:[--composer-banner-icon-column:--spacing(6)]",
+        "min-w-0 px-1 py-(--composer-banner-padding-block) after:block after:h-(--chat-composer-attachment-overlap) text-xs/4 [--composer-banner-icon-column:--spacing(7)] [--composer-banner-padding-block:--spacing(1)] sm:[--composer-banner-icon-column:--spacing(6)]",
         density === "comfortable" && "[--composer-banner-padding-block:--spacing(1.25)]",
         density === "spacious" && "px-3 [--composer-banner-padding-block:--spacing(3)]",
         width === "content" ? "w-fit max-w-full flex-none" : "@container",
@@ -189,7 +189,7 @@ function Row({
     className: cn(
       "group/banner-row grid min-h-(--composer-banner-icon-column) w-full min-w-0 grid-cols-[var(--composer-banner-icon-column)_minmax(0,1fr)_auto] items-center gap-x-1 text-start",
       "not-has-[>[data-slot=composer-banner-actions]]:grid-cols-[var(--composer-banner-icon-column)_minmax(0,1fr)]",
-      "[&:is(button)]:cursor-pointer [&:is(button)]:rounded-[0.5rem] [&:is(button)]:focus-visible:outline-2 [&:is(button)]:focus-visible:-outline-offset-2 [&:is(button)]:focus-visible:outline-ring",
+      "[&:is(button)]:cursor-pointer [&:is(button)]:rounded-md [&:is(button)]:focus-visible:outline-2 [&:is(button)]:focus-visible:-outline-offset-2 [&:is(button)]:focus-visible:outline-ring",
       layout === "wrap-actions" &&
         "@max-[400px]:*:data-[slot=composer-banner-content]:min-h-(--composer-banner-icon-column)",
       layout === "wrap-actions-narrow" &&
@@ -306,15 +306,7 @@ function Count({ className, ...props }: ComponentProps<"span">) {
 }
 
 function Body({ className, ...props }: ComponentProps<"div">) {
-  return (
-    <div
-      className={cn(
-        "min-w-0 ps-[calc(var(--composer-banner-icon-column)+(--spacing(1)))]",
-        className,
-      )}
-      {...props}
-    />
-  );
+  return <div className={cn("min-w-0 ps-8 sm:ps-7", className)} {...props} />;
 }
 
 function Dot({ className, ...props }: ComponentProps<"span">) {
diff --git a/apps/web/src/components/chat/ComposerBannerStack.tsx b/apps/web/src/components/chat/ComposerBannerStack.tsx
index a55385fd4aa1..77db010cf696 100644
--- a/apps/web/src/components/chat/ComposerBannerStack.tsx
+++ b/apps/web/src/components/chat/ComposerBannerStack.tsx
@@ -123,7 +123,7 @@ export function ComposerBannerStack({ className, items }: ComposerBannerStackPro
         <div
           key={frontItem.id}
           className={cn(
-            "relative z-10 transition-[translate,opacity] duration-220 ease-in",
+            "relative z-10 transition-[opacity,translate] duration-220 ease-in",
             exitingItemId === frontItem.id
               ? "pointer-events-none translate-y-16 opacity-0"
               : "opacity-100",
@@ -218,7 +218,7 @@ export function ComposerBannerStack({ className, items }: ComposerBannerStackPro
                     <div
                       key={item.id}
                       className={cn(
-                        "transition-[translate,opacity] duration-220 ease-in",
+                        "transition-[opacity,translate] duration-220 ease-in",
                         exitingItemId === item.id
                           ? "pointer-events-none translate-y-28 opacity-0"
                           : "opacity-100",
diff --git a/apps/web/src/components/chat/ComposerControl.tsx b/apps/web/src/components/chat/ComposerControl.tsx
index 2510d8db4fd2..e079106d5ee3 100644
--- a/apps/web/src/components/chat/ComposerControl.tsx
+++ b/apps/web/src/components/chat/ComposerControl.tsx
@@ -16,10 +16,10 @@ export type ComposerControlSize = "sm" | "xs";
  */
 function composerControlClassName(size: ComposerControlSize, className?: string) {
   return cn(
-    "relative inline-flex shrink-0 cursor-pointer items-center justify-center whitespace-nowrap rounded-[var(--control-radius)] border border-transparent text-base outline-none hover:bg-accent data-pressed:bg-accent focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-64 data-disabled:pointer-events-none data-disabled:opacity-64 pointer-coarse:after:absolute pointer-coarse:after:size-full pointer-coarse:after:min-h-11 pointer-coarse:after:min-w-11 [&:active:not([aria-haspopup])]:scale-[0.97] [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg]:-mx-0.5 [&_svg[data-composer-control-icon]]:mx-0 [&_svg:not([class*='text-'])]:text-[var(--control-icon-color)]",
+    "relative inline-flex shrink-0 cursor-pointer items-center justify-center whitespace-nowrap rounded-(--control-radius) border border-transparent text-base outline-none hover:bg-accent data-pressed:bg-accent focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-64 data-disabled:pointer-events-none data-disabled:opacity-64 pointer-coarse:after:absolute pointer-coarse:after:size-full pointer-coarse:after:min-h-11 pointer-coarse:after:min-w-11 [&:active:not([aria-haspopup])]:scale-[0.97] [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg]:-mx-0.5 [&_svg[data-composer-control-icon]]:mx-0",
     size === "xs"
-      ? "h-7 gap-1 px-[calc(--spacing(2)-1px)] font-normal text-muted-foreground/70 text-sm [--control-icon-color:currentColor] hover:text-foreground/80 sm:h-6 sm:text-xs [&_svg:not([class*='size-'])]:size-4 sm:[&_svg:not([class*='size-'])]:size-3.5 [&_svg[data-composer-control-chevron]]:ms-0 [&_svg[data-composer-control-chevron]]:-me-1"
-      : "h-7 gap-1.5 px-2.5 font-medium text-secondary-label [--control-icon-color:var(--contrast-muted-foreground)] hover:text-foreground sm:text-sm [&_svg:not([class*='size-'])]:size-4.5 sm:[&_svg:not([class*='size-'])]:size-4",
+      ? "h-7 gap-1 px-1.75 font-normal text-muted-foreground/70 text-sm hover:text-foreground/80 sm:h-6 sm:text-xs [&_svg:not([class*='size-'])]:size-4 sm:[&_svg:not([class*='size-'])]:size-3.5 [&_svg[data-composer-control-chevron]]:ms-0 [&_svg[data-composer-control-chevron]]:-me-1"
+      : "h-7 gap-1.5 px-2.5 font-medium text-secondary-label [&_svg:not([class*='text-'])]:text-muted-foreground hover:text-foreground sm:text-sm [&_svg:not([class*='size-'])]:size-4.5 sm:[&_svg:not([class*='size-'])]:size-4",
     "aria-pressed:bg-accent aria-pressed:text-accent-foreground aria-pressed:hover:bg-accent/80",
     className,
   );
diff --git a/apps/web/src/components/chat/ComposerPendingApprovalPanel.tsx b/apps/web/src/components/chat/ComposerPendingApprovalPanel.tsx
index 5f181e71783d..2cebb98b4664 100644
--- a/apps/web/src/components/chat/ComposerPendingApprovalPanel.tsx
+++ b/apps/web/src/components/chat/ComposerPendingApprovalPanel.tsx
@@ -41,7 +41,7 @@ export const ComposerPendingApprovalPanel = memo(function ComposerPendingApprova
       className={cn("flex min-w-0 flex-1 flex-col items-start gap-1", className)}
       role="group"
     >
-      <span className="flex w-full min-w-0 items-center gap-2 text-[11px] text-muted-foreground">
+      <span className="flex w-full min-w-0 items-center gap-2 text-2xs text-muted-foreground">
         <span className="shrink-0 font-medium text-warning">{fallbackLabel}</span>
         {approval.appName ? <span className="min-w-0 truncate">{approval.appName}</span> : null}
         {pendingCount > 1 ? (
diff --git a/apps/web/src/components/chat/ComposerPendingUserInputPanel.tsx b/apps/web/src/components/chat/ComposerPendingUserInputPanel.tsx
index 7462068afefb..a2052c0c73fd 100644
--- a/apps/web/src/components/chat/ComposerPendingUserInputPanel.tsx
+++ b/apps/web/src/components/chat/ComposerPendingUserInputPanel.tsx
@@ -198,7 +198,7 @@ const ComposerPendingUserInputCard = memo(function ComposerPendingUserInputCard(
         </ComposerBanner.Content>
         <ComposerBanner.Actions>
           {prompt.questions.length > 1 ? (
-            <span className="text-[10px] font-medium text-muted-foreground tabular-nums">
+            <span className="text-3xs font-medium text-muted-foreground tabular-nums">
               {questionIndex + 1}/{prompt.questions.length}
             </span>
           ) : null}
@@ -257,9 +257,7 @@ const ComposerPendingUserInputCard = memo(function ComposerPendingUserInputCard(
                     <div className="min-w-0 flex-1 flex flex-col gap-0.5">
                       <span className="text-sm font-medium">{option.label}</span>
                       {option.description && option.description !== option.label ? (
-                        <span className="text-secondary-label text-[11px]">
-                          {option.description}
-                        </span>
+                        <span className="text-secondary-label text-2xs">{option.description}</span>
                       ) : null}
                     </div>
                     {isSelected ? (
@@ -267,7 +265,7 @@ const ComposerPendingUserInputCard = memo(function ComposerPendingUserInputCard(
                     ) : shortcutKey !== null ? (
                       <kbd
                         className={cn(
-                          "flex size-5 shrink-0 items-center justify-center text-[10px] font-medium text-muted-foreground tabular-nums",
+                          "flex size-5 shrink-0 items-center justify-center text-3xs font-medium text-muted-foreground tabular-nums",
                         )}
                       >
                         {shortcutKey}
diff --git a/apps/web/src/components/chat/ComposerPrimaryActions.tsx b/apps/web/src/components/chat/ComposerPrimaryActions.tsx
index 4cdce3c96ad7..c1f448a73ea8 100644
--- a/apps/web/src/components/chat/ComposerPrimaryActions.tsx
+++ b/apps/web/src/components/chat/ComposerPrimaryActions.tsx
@@ -91,7 +91,7 @@ export const ComposerPrimaryActions = memo(function ComposerPrimaryActions({
     <button
       type="button"
       className={cn(
-        "flex cursor-pointer items-center justify-center rounded-full bg-destructive/90 text-white shadow-xs shadow-destructive/24 inset-shadow-[0_1px_--theme(--color-white/16%)] transition-all duration-150 hover:bg-destructive hover:scale-105 active:inset-shadow-[0_1px_--theme(--color-black/8%)] active:shadow-none",
+        "flex cursor-pointer items-center justify-center rounded-full bg-destructive/90 text-white shadow-xs shadow-destructive/24 inset-shadow-2xs inset-shadow-white/16 transition-all duration-150 hover:bg-destructive hover:scale-105 active:inset-shadow-black/8 active:shadow-none",
         insidePendingAction
           ? "size-8 sm:size-7"
           : hasSendableContent
@@ -215,7 +215,7 @@ export const ComposerPrimaryActions = memo(function ComposerPrimaryActions({
     <button
       type="submit"
       className={cn(
-        "relative isolate flex h-9 w-9 items-center justify-center overflow-hidden rounded-full shadow-xs transition-all duration-150 enabled:cursor-pointer enabled:inset-shadow-[0_1px_--theme(--color-white/16%)] hover:scale-105 active:inset-shadow-[0_1px_--theme(--color-black/8%)] active:shadow-none disabled:pointer-events-none disabled:opacity-30 disabled:shadow-none disabled:hover:scale-100 sm:h-8 sm:w-8",
+        "relative isolate flex h-9 w-9 items-center justify-center overflow-hidden rounded-full shadow-xs transition-all duration-150 enabled:cursor-pointer enabled:inset-shadow-2xs enabled:inset-shadow-white/16 hover:scale-105 active:inset-shadow-black/8 active:shadow-none disabled:pointer-events-none disabled:opacity-30 disabled:shadow-none disabled:hover:scale-100 sm:h-8 sm:w-8",
         stageBackdropVariant
           ? "bg-transparent text-white enabled:shadow-black/24 enabled:hover:brightness-110"
           : "bg-message-action text-message-action-foreground enabled:shadow-message-action/24 hover:bg-message-action-hover",
diff --git a/apps/web/src/components/chat/ComposerStashBadge.tsx b/apps/web/src/components/chat/ComposerStashBadge.tsx
index 9a70094669fa..378289728e4f 100644
--- a/apps/web/src/components/chat/ComposerStashBadge.tsx
+++ b/apps/web/src/components/chat/ComposerStashBadge.tsx
@@ -25,7 +25,7 @@ export const ComposerStashBadge = memo(function ComposerStashBadge(props: {
       key={props.pulseKey}
       className={cn(
         props.pulsing
-          ? "animate-[prompt-stash-count-enter_180ms_ease-out_both] text-primary motion-reduce:animate-none"
+          ? "text-primary transition-[opacity,translate] duration-180 ease-out starting:translate-y-0.5 starting:opacity-0 motion-reduce:transition-none"
           : "text-muted-foreground",
       )}
     >
diff --git a/apps/web/src/components/chat/ComposerSurface.tsx b/apps/web/src/components/chat/ComposerSurface.tsx
index b7c134c29925..bcb994085eb0 100644
--- a/apps/web/src/components/chat/ComposerSurface.tsx
+++ b/apps/web/src/components/chat/ComposerSurface.tsx
@@ -19,7 +19,7 @@ function Shell({
         "[html[data-theme-id]_&]:[--chat-composer-glass-surface:var(--app-theme-surface-raised)] [html[data-theme-id]_&]:[--chat-composer-outline:var(--app-theme-toolbar-border)]",
         "dark:[html[data-theme-id]:not([data-theme-id=t3-chat])_&]:[--chat-composer-highlight:color-mix(in_srgb,var(--app-theme-input)_12%,transparent)] dark:[html[data-theme-id]:not([data-theme-id=t3-chat])_&]:[--chat-composer-outline:color-mix(in_srgb,var(--app-theme-input)_30%,var(--background))]",
         "dark:[html[data-theme-id=t3-chat]_&]:[--chat-composer-highlight:color-mix(in_srgb,#432d48_12%,transparent)] dark:[html[data-theme-id=t3-chat]_&]:[--chat-composer-outline:#241e28]",
-        "before:pointer-events-none before:absolute before:inset-0 before:z-0 before:rounded-[22px] before:bg-[color-mix(in_srgb,var(--chat-composer-glass-surface)_var(--glass-opacity),transparent)] before:backdrop-blur-(--glass-blur) before:backdrop-saturate-(--glass-saturation)",
+        "before:pointer-events-none before:absolute before:inset-0 before:z-0 before:rounded-3xl before:bg-(--chat-composer-glass-surface)/(--glass-opacity) before:backdrop-blur-(--glass-blur) before:backdrop-saturate-(--glass-saturation)",
         "not-supports-[((backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px)))]:before:bg-(--chat-composer-glass-surface)",
         "has-data-[composer-banner-surface=attached]:before:hidden",
         contextStrip && [
@@ -37,7 +37,7 @@ function Shell({
 }
 
 const outlineClasses =
-  "after:pointer-events-none after:absolute after:inset-0 after:rounded-[inherit] after:border after:border-(--chat-composer-outline) dark:after:shadow-[inset_0_1px_var(--chat-composer-highlight)]";
+  "after:pointer-events-none after:absolute after:inset-0 after:rounded-[inherit] after:border after:border-(--chat-composer-outline) dark:after:inset-shadow-2xs dark:after:inset-shadow-(color:--chat-composer-highlight)";
 
 // The bottom strip continues the outline, so leave the seam between its corners open.
 const contextSeamClasses =
@@ -48,7 +48,7 @@ function Host({ className, ...props }: ComponentProps<"div">) {
     <div
       data-slot="composer-host"
       className={cn(
-        "relative z-10 w-full rounded-[22px] shadow-[0_12px_28px_-18px_rgb(0_0_0/40%)] after:z-1 dark:shadow-none",
+        "relative z-10 w-full rounded-3xl shadow-composer after:z-1 dark:shadow-none",
         outlineClasses,
         contextSeamClasses,
         "group-has-data-[composer-banner-surface=attached]/composer-surface:shadow-none group-has-data-[composer-banner-surface=attached]/composer-surface:after:hidden",
@@ -64,12 +64,12 @@ function Main({ className, ...props }: ComponentProps<"div">) {
     <div
       data-chat-composer-main-surface="true"
       className={cn(
-        "group relative z-10 rounded-[22px] p-px transition-colors duration-200",
+        "group relative z-10 rounded-3xl p-px transition-colors duration-200",
         outlineClasses,
         contextSeamClasses,
         "after:z-20 after:hidden group-has-data-[composer-banner-surface=attached]/composer-surface:after:block",
-        "group-has-data-[composer-banner-surface=attached]/composer-surface:bg-[color-mix(in_srgb,var(--chat-composer-glass-surface)_var(--glass-opacity),transparent)] group-has-data-[composer-banner-surface=attached]/composer-surface:backdrop-blur-(--glass-blur) group-has-data-[composer-banner-surface=attached]/composer-surface:backdrop-saturate-(--glass-saturation)",
-        "group-has-data-[composer-banner-surface=attached]/composer-surface:shadow-[0_12px_28px_-18px_rgb(0_0_0/40%)] dark:group-has-data-[composer-banner-surface=attached]/composer-surface:shadow-none",
+        "group-has-data-[composer-banner-surface=attached]/composer-surface:bg-(--chat-composer-glass-surface)/(--glass-opacity) group-has-data-[composer-banner-surface=attached]/composer-surface:backdrop-blur-(--glass-blur) group-has-data-[composer-banner-surface=attached]/composer-surface:backdrop-saturate-(--glass-saturation)",
+        "group-has-data-[composer-banner-surface=attached]/composer-surface:shadow-composer dark:group-has-data-[composer-banner-surface=attached]/composer-surface:shadow-none",
         "not-supports-[((backdrop-filter:blur(1px))_or_(-webkit-backdrop-filter:blur(1px)))]:group-has-data-[composer-banner-surface=attached]/composer-surface:bg-(--chat-composer-glass-surface)",
         "group-has-data-[composer-banner-surface=attached]/composer-surface:**:data-[chat-composer-mobile-collapsed=true]:min-h-[calc(1rem+1px)]",
         className,
@@ -85,10 +85,10 @@ function ContextStrip({ className, ...props }: ComponentProps<"div">) {
       data-slot="composer-context-strip"
       className={cn(
         "group/composer-context relative isolate mx-auto -mt-4 flex w-[calc(100%-2*var(--chat-composer-drawer-inset))] items-center gap-2 overflow-x-clip overflow-y-visible ps-1 pe-2 pt-5 pb-1",
-        "before:absolute before:inset-0 before:-z-1 before:rounded-b-[16px] before:border before:border-(--chat-composer-outline) before:mask-[linear-gradient(to_bottom,transparent_0_1rem,black_1rem)] before:shadow-[0_12px_28px_-18px_rgb(0_0_0/40%)]",
-        "dark:before:border-white/7 dark:before:bg-[linear-gradient(to_bottom,transparent_0_1rem,rgb(0_0_0/18%)_1rem,transparent_calc(1rem+10px)),linear-gradient(rgb(255_255_255/1%),rgb(255_255_255/1%))] dark:before:shadow-[0_14px_32px_-18px_rgb(0_0_0/75%)]",
-        "group-has-data-[composer-banner-surface=attached]/composer-surface:before:bg-[color-mix(in_srgb,var(--chat-composer-glass-surface)_var(--glass-opacity),transparent)] group-has-data-[composer-banner-surface=attached]/composer-surface:before:backdrop-blur-(--glass-blur) group-has-data-[composer-banner-surface=attached]/composer-surface:before:backdrop-saturate-(--glass-saturation)",
-        "not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:bg-[color-mix(in_srgb,var(--chat-composer-glass-surface)_var(--glass-opacity),transparent)] not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:backdrop-blur-(--glass-blur) not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:backdrop-saturate-(--glass-saturation)",
+        "before:absolute before:inset-0 before:-z-1 before:rounded-b-2xl before:border before:border-(--chat-composer-outline) before:mask-b-from-transparent before:mask-b-from-4 before:mask-b-to-black before:mask-b-to-4 before:shadow-composer",
+        "dark:before:border-white/7 dark:before:bg-composer-seam-below dark:before:shadow-composer-dark",
+        "group-has-data-[composer-banner-surface=attached]/composer-surface:before:bg-(--chat-composer-glass-surface)/(--glass-opacity) group-has-data-[composer-banner-surface=attached]/composer-surface:before:backdrop-blur-(--glass-blur) group-has-data-[composer-banner-surface=attached]/composer-surface:before:backdrop-saturate-(--glass-saturation)",
+        "not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:bg-(--chat-composer-glass-surface)/(--glass-opacity) not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:backdrop-blur-(--glass-blur) not-supports-[clip-path:shape(from_0_0,line_to_1px_1px)]:before:backdrop-saturate-(--glass-saturation)",
         className,
       )}
       {...props}
diff --git a/apps/web/src/components/chat/ComposerTasksBadge.tsx b/apps/web/src/components/chat/ComposerTasksBadge.tsx
index 6da402d5311d..3031924e44e3 100644
--- a/apps/web/src/components/chat/ComposerTasksBadge.tsx
+++ b/apps/web/src/components/chat/ComposerTasksBadge.tsx
@@ -200,7 +200,7 @@ export const ComposerTasksContent = memo(function ComposerTasksContent({
                 </ComposerBanner.Content>
                 <ComposerBanner.Actions>
                   <span
-                    className="w-12 text-right text-[10px]/4 text-muted-foreground/45 tabular-nums"
+                    className="w-12 text-right text-3xs/4 text-muted-foreground/45 tabular-nums"
                     data-composer-task-duration="true"
                   >
                     {step.durationMs !== undefined
diff --git a/apps/web/src/components/chat/ContextWindowMeter.tsx b/apps/web/src/components/chat/ContextWindowMeter.tsx
index 43d5fb061d4e..5eedeb97c94a 100644
--- a/apps/web/src/components/chat/ContextWindowMeter.tsx
+++ b/apps/web/src/components/chat/ContextWindowMeter.tsx
@@ -92,11 +92,11 @@ export function ContextWindowMeter(props: {
         width="sm"
         className="text-left whitespace-normal"
       >
-        <div className="flex flex-col gap-2 p-[var(--floating-content-inset)]">
+        <div className="flex flex-col gap-2 p-(--floating-content-inset)">
           <div className="flex items-center justify-between gap-3">
             <div className="font-medium text-muted-foreground text-xs">Context Window</div>
             {usage.maxTokens !== null && usedPercentage ? (
-              <div className="text-secondary-label text-[11px] tabular-nums">
+              <div className="text-secondary-label text-2xs tabular-nums">
                 <span>{usedPercentage}</span>
                 <span className="mx-1">·</span>
                 <span>
@@ -105,7 +105,7 @@ export function ContextWindowMeter(props: {
                 </span>
               </div>
             ) : (
-              <div className="text-secondary-label text-[11px] tabular-nums">
+              <div className="text-secondary-label text-2xs tabular-nums">
                 {formatContextWindowTokens(usage.usedTokens)}
               </div>
             )}
@@ -126,7 +126,7 @@ export function ContextWindowMeter(props: {
             </div>
           ) : null}
           {showTotalProcessed ? (
-            <div className="flex items-center justify-between gap-3 text-[11px] leading-4">
+            <div className="flex items-center justify-between gap-3 text-2xs leading-4">
               <span className="text-secondary-label">Total processed</span>
               <span className="font-medium tabular-nums text-secondary-label">
                 {formatContextWindowTokens(totalProcessedTokens)}
@@ -134,7 +134,7 @@ export function ContextWindowMeter(props: {
             </div>
           ) : null}
           {usage.compactsAutomatically ? (
-            <div className="mt-1 text-pretty text-secondary-label text-[11px] font-medium">
+            <div className="mt-1 text-pretty text-secondary-label text-2xs font-medium">
               {formatContextWindowCompactionMessage(modelDisplayName, usage.autoCompactThreshold)}
             </div>
           ) : null}
@@ -151,7 +151,7 @@ export function ContextWindowMeter(props: {
                 Compact context
               </Button>
               {compactDisabled && compactDisabledReason ? (
-                <div className="text-pretty text-secondary-label text-[11px]">
+                <div className="text-pretty text-secondary-label text-2xs">
                   {compactDisabledReason}
                 </div>
               ) : null}
diff --git a/apps/web/src/components/chat/ExpandedImageDialog.tsx b/apps/web/src/components/chat/ExpandedImageDialog.tsx
index a547ed821405..f750693b6494 100644
--- a/apps/web/src/components/chat/ExpandedImageDialog.tsx
+++ b/apps/web/src/components/chat/ExpandedImageDialog.tsx
@@ -219,7 +219,7 @@ export const ExpandedImageDialog = memo(function ExpandedImageDialog({
               accessibilityDetails ? (
                 <SnapShotAccessibilityData
                   details={accessibilityDetails}
-                  className="h-[min(var(--media-height),40rem)] w-[min(var(--media-width),42rem)] animate-[snap-shot-contents-enter_140ms_ease-out] rounded-lg border border-border/70 bg-background p-4 text-xs leading-5 shadow-2xl motion-reduce:animate-none"
+                  className="h-[min(var(--media-height),40rem)] w-[min(var(--media-width),42rem)] transition-opacity duration-140 ease-out starting:opacity-0 rounded-lg border border-border/70 bg-background p-4 text-xs leading-5 shadow-2xl motion-reduce:transition-none"
                 />
               ) : null
             ) : item.src === null || failedImageSrc === item.src ? (
diff --git a/apps/web/src/components/chat/MessagesTimeline.tsx b/apps/web/src/components/chat/MessagesTimeline.tsx
index d15e869543d0..505f64af3640 100644
--- a/apps/web/src/components/chat/MessagesTimeline.tsx
+++ b/apps/web/src/components/chat/MessagesTimeline.tsx
@@ -344,7 +344,7 @@ function TimelineLoadEarlierHeader({
   fade: boolean;
 }) {
   return (
-    <div className={fade ? "pt-[var(--workspace-titlebar-scroll-fade-height)]" : "pt-3 sm:pt-4"}>
+    <div className={fade ? "pt-(--workspace-titlebar-scroll-fade-height)" : "pt-3 sm:pt-4"}>
       <div className="mx-auto w-full max-w-3xl pb-2">
         <button
           type="button"
@@ -1539,7 +1539,7 @@ function TimelineMinimap({
                 <span
                   aria-hidden="true"
                   className={cn(
-                    "pointer-events-none absolute left-0 h-0.5 -translate-y-1/2 rounded-full bg-muted-foreground/35 transition-[background-color,width] duration-150 data-[in-view=true]:bg-foreground/90",
+                    "pointer-events-none absolute left-0 h-0.5 -translate-y-1/2 rounded-full bg-muted-foreground/35 transition-[width,background-color] duration-150 data-[in-view=true]:bg-foreground/90",
                     activeDistance === 0
                       ? "w-6 bg-muted-foreground/75"
                       : activeDistance === 1
@@ -1885,7 +1885,7 @@ function UserVideoAttachment({ file }: { readonly file: ChatFileAttachment }) {
 
   if (asset === null && src === null) {
     return (
-      <div className="flex aspect-[4/3] w-full items-center justify-center rounded-lg border border-border/80 bg-black px-2 py-3 text-center text-[11px] text-white/70">
+      <div className="flex aspect-[4/3] w-full items-center justify-center rounded-lg border border-border/80 bg-black px-2 py-3 text-center text-2xs text-white/70">
         {file.name}
       </div>
     );
@@ -2112,7 +2112,7 @@ function UserTimelineRow({ row }: { row: Extract<TimelineRow, { kind: "message"
                     />
                   </button>
                 ) : (
-                  <div className="flex min-h-[72px] items-center justify-center px-2 py-3 text-center text-secondary-label text-[11px]">
+                  <div className="flex min-h-[72px] items-center justify-center px-2 py-3 text-center text-secondary-label text-2xs">
                     {image.name}
                   </div>
                 )}
@@ -2756,7 +2756,7 @@ function ReasoningTraceBlock({
           className="flex min-h-6 cursor-pointer select-none items-center gap-1.5 rounded-md px-0.5 text-start text-sm leading-relaxed transition-colors hover:bg-accent/20 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-ring/70"
         >
           <span className="flex size-6 shrink-0 items-center justify-center text-icon-muted">
-            <BrainIcon aria-hidden className="block size-4 shrink-0 stroke-[1.8] opacity-70" />
+            <BrainIcon aria-hidden className="block size-4 shrink-0 stroke-2 opacity-70" />
           </span>
           <span
             ref={streaming ? observeVisibleAnimation : undefined}
@@ -2829,7 +2829,7 @@ const ReasoningTimelineRow = memo(function ReasoningTimelineRow({
         className="flex cursor-pointer select-none items-center gap-1.5 rounded-md px-0.5 py-0.5 text-start transition-colors hover:bg-accent/20 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-ring/70"
       >
         <span className="flex size-6 shrink-0 items-center justify-center text-icon-muted">
-          <BrainIcon aria-hidden className="block size-4 shrink-0 stroke-[1.8] opacity-70" />
+          <BrainIcon aria-hidden className="block size-4 shrink-0 stroke-2 opacity-70" />
         </span>
         <span className="flex min-w-0 flex-1 items-center gap-1.5">
           <span className="relative min-w-0 flex-1 truncate text-secondary-label text-sm leading-relaxed">
@@ -3208,7 +3208,7 @@ function LiveActivityContent({
           <ToolActivityIconView
             icon={toolIcon}
             fallbackName={iconName}
-            className="block size-4 shrink-0 stroke-[1.8]"
+            className="block size-4 shrink-0 stroke-2"
             muted={!highlighted}
           />
         </span>
@@ -3329,7 +3329,7 @@ function WorkGroupToggleTimelineRow({
           fallbackName={
             row.summaryToolIcon ?? row.toolSurface ?? toolGroupSummaryIconName(row.summaryKind)
           }
-          className="size-4 shrink-0 stroke-[1.8]"
+          className="size-4 shrink-0 stroke-2"
           muted
         />
       </span>
@@ -3545,7 +3545,7 @@ function UserMessagePreviewAnnotationDetails(props: {
             {props.record.comment}
           </div>
         ) : null}
-        <div className="mt-1 flex items-center gap-2 text-secondary-label text-[10px]">
+        <div className="mt-1 flex items-center gap-2 text-secondary-label text-3xs">
           {props.record.targetSummary ? (
             <span className="truncate">{props.record.targetSummary}</span>
           ) : null}
@@ -3577,7 +3577,7 @@ function UserMessagePreviewAnnotationDetails(props: {
                     ) : null}
                   </div>
                   {element.htmlPreview?.trim() ? (
-                    <pre className="mt-1 max-h-24 overflow-auto whitespace-pre-wrap rounded bg-muted/60 px-2 py-1.5 text-[10px] leading-relaxed">
+                    <pre className="mt-1 max-h-24 overflow-auto whitespace-pre-wrap rounded bg-muted/60 px-2 py-1.5 text-3xs leading-relaxed">
                       {element.htmlPreview.trim()}
                     </pre>
                   ) : null}
@@ -3585,7 +3585,7 @@ function UserMessagePreviewAnnotationDetails(props: {
               );
             })}
             {(props.record.elements?.length ?? 0) > visibleElements.length ? (
-              <div className="text-secondary-label text-[10px]">
+              <div className="text-secondary-label text-3xs">
                 {(props.record.elements?.length ?? 0) - visibleElements.length} more selected
                 elements
               </div>
@@ -3611,7 +3611,7 @@ function UserMessageElementDetails({
         <div className="truncate text-message-foreground text-xs font-medium">
           {record.pageTitle?.trim() || record.pageUrl}
         </div>
-        <div className="mt-0.5 truncate text-secondary-label text-[10px]">{record.pageUrl}</div>
+        <div className="mt-0.5 truncate text-secondary-label text-3xs">{record.pageUrl}</div>
       </div>
       <div className="space-y-2 px-3 py-2.5">
         <div className="flex min-w-0 items-center gap-2 text-xs">
@@ -4013,7 +4013,7 @@ function UserMessageReviewCommentCard({ comment }: { comment: ReviewCommentConte
         <div className="text-message-foreground text-xs font-medium">
           {formatWorkspaceRelativePath(comment.filePath, ctx.workspaceRoot)}
         </div>
-        <div className="text-secondary-label text-[11px]">
+        <div className="text-secondary-label text-2xs">
           {comment.sectionTitle} · {comment.rangeLabel}
         </div>
       </div>
@@ -4153,7 +4153,7 @@ function ToolActivityIconView(props: {
   muted: boolean;
 }) {
   const { resolvedTheme } = use(TimelineRowCtx);
-  const fallbackClassName = cn(props.className, props.muted && "opacity-70 light:brightness-[.6]");
+  const fallbackClassName = cn(props.className, props.muted && "opacity-70 light:brightness-60");
   if (!props.icon) {
     return <WorkEntryIcon name={props.fallbackName} className={fallbackClassName} />;
   }
@@ -4213,7 +4213,7 @@ function NativeAppToolActivityIcon(props: {
     return (
       <WorkEntryIcon
         name={props.fallbackName}
-        className={cn(props.className, props.muted && "opacity-70 light:brightness-[.6]")}
+        className={cn(props.className, props.muted && "opacity-70 light:brightness-60")}
       />
     );
   }
@@ -4258,14 +4258,14 @@ function ToolActivityImageIcon(props: {
       {displayedSrc === null ? (
         <WorkEntryIcon
           name={props.fallbackName}
-          className={cn(props.className, props.muted && "opacity-70 light:brightness-[.6]")}
+          className={cn(props.className, props.muted && "opacity-70 light:brightness-60")}
         />
       ) : null}
       {displayedSrc ? (
         <span
           className={cn(
             props.className,
-            "inline-block overflow-hidden rounded-[3px] bg-background",
+            "inline-block overflow-hidden rounded-xs bg-background",
             props.muted && "opacity-70",
           )}
         >
@@ -4275,7 +4275,7 @@ function ToolActivityImageIcon(props: {
             aria-hidden
             decoding="async"
             referrerPolicy="no-referrer"
-            className={cn("block size-full object-contain", props.muted && "light:brightness-[.6]")}
+            className={cn("block size-full object-contain", props.muted && "light:brightness-60")}
             onError={() => handleLoadError(displayedSrc)}
           />
         </span>
@@ -4429,7 +4429,7 @@ function buildToolCallExpandedBody(
 }
 
 const toolCallExpandedBodyClassName =
-  "max-h-64 cursor-text overflow-auto whitespace-pre-wrap break-words font-mono text-secondary-label text-[length:var(--font-size-code,0.6875rem)] leading-relaxed select-text";
+  "max-h-64 cursor-text overflow-auto whitespace-pre-wrap break-words font-mono text-secondary-label text-(length:--font-size-code,var(--text-2xs)) leading-relaxed select-text";
 
 function workEntryIconName(workEntry: TimelineWorkEntry): WorkEntryIconName {
   if (
@@ -4640,12 +4640,12 @@ function AgentSpawnMemberRow({
             {agent.title}
           </span>
           {role ? (
-            <span className="max-w-28 shrink-0 truncate rounded-sm border border-border/60 px-1 font-mono text-[.65rem] text-muted-foreground">
+            <span className="max-w-28 shrink-0 truncate rounded-sm border border-border/60 px-1 font-mono text-3xs text-muted-foreground">
               {role}
             </span>
           ) : null}
         </p>
-        <span className="shrink-0 font-mono text-[.7rem] tabular-nums text-muted-foreground">
+        <span className="shrink-0 font-mono text-2xs tabular-nums text-muted-foreground">
           {statusLabel}
         </span>
       </div>
@@ -4821,7 +4821,7 @@ const PlainWorkEntryRow = memo(function PlainWorkEntryRow(props: {
           <ToolActivityIconView
             icon={entryToolIcon}
             fallbackName={entryIconName}
-            className="block size-4 shrink-0 stroke-[1.8]"
+            className="block size-4 shrink-0 stroke-2"
             muted
           />
         </span>
diff --git a/apps/web/src/components/chat/ModelListRow.tsx b/apps/web/src/components/chat/ModelListRow.tsx
index 7e8bdeb24ce8..36de2e0362fe 100644
--- a/apps/web/src/components/chat/ModelListRow.tsx
+++ b/apps/web/src/components/chat/ModelListRow.tsx
@@ -70,7 +70,7 @@ export const ModelListRow = memo(function ModelListRow(props: {
           </div>
           {props.showNewBadge ? (
             <span
-              className="shrink-0 rounded border border-update/35 bg-update/15 px-0.5 py-px text-[10px] font-bold uppercase leading-none tracking-wide text-update-foreground"
+              className="shrink-0 rounded border border-update/35 bg-update/15 px-0.5 py-px text-3xs font-bold uppercase leading-none tracking-wide text-update-foreground"
               aria-label="New model"
             >
               New
diff --git a/apps/web/src/components/chat/ModelPickerSidebar.tsx b/apps/web/src/components/chat/ModelPickerSidebar.tsx
index 93d2b2726770..80b06cbc680d 100644
--- a/apps/web/src/components/chat/ModelPickerSidebar.tsx
+++ b/apps/web/src/components/chat/ModelPickerSidebar.tsx
@@ -123,7 +123,7 @@ export const ModelPickerSidebar = memo(function ModelPickerSidebar(props: {
                     render={
                       <Toolbar.Button
                         className={cn(
-                          "relative isolate flex w-full cursor-pointer aspect-square items-center justify-center rounded-md transition-colors hover:bg-[color-mix(in_srgb,var(--popover)_90%,var(--contrast-foreground))] focus-visible:bg-[color-mix(in_srgb,var(--popover)_90%,var(--contrast-foreground))] focus-visible:outline-none",
+                          "relative isolate flex w-full cursor-pointer aspect-square items-center justify-center rounded-md transition-colors hover:bg-foreground/10 focus-visible:bg-foreground/10 focus-visible:outline-none",
                         )}
                         onClick={() => handleSelect("favorites")}
                         type="button"
@@ -171,7 +171,7 @@ export const ModelPickerSidebar = memo(function ModelPickerSidebar(props: {
             const button = (
               <Toolbar.Button
                 className={cn(
-                  "relative isolate flex w-full cursor-pointer aspect-square items-center justify-center rounded-md transition-colors hover:bg-[color-mix(in_srgb,var(--popover)_90%,var(--contrast-foreground))] focus-visible:bg-[color-mix(in_srgb,var(--popover)_90%,var(--contrast-foreground))] focus-visible:outline-none",
+                  "relative isolate flex w-full cursor-pointer aspect-square items-center justify-center rounded-md transition-colors hover:bg-foreground/10 focus-visible:bg-foreground/10 focus-visible:outline-none",
                   isDisabled && "opacity-50 cursor-not-allowed hover:bg-transparent",
                 )}
                 data-provider-accent-color={entry.accentColor}
@@ -210,9 +210,7 @@ export const ModelPickerSidebar = memo(function ModelPickerSidebar(props: {
                         ? "var(--background)"
                         : "color-mix(in oklab, var(--muted) 30%, transparent)"
                   }
-                  {...(entry.accentColor
-                    ? { badgeClassName: "h-3 min-w-3 px-0.5 text-[7px]" }
-                    : {})}
+                  {...(entry.accentColor ? { badgeClassName: "h-3 min-w-3 px-0.5 text-3xs" } : {})}
                 />
                 {showNewBadge ? (
                   <span className={NEW_BADGE_CLASS} aria-hidden>
diff --git a/apps/web/src/components/chat/PanelLayoutControls.tsx b/apps/web/src/components/chat/PanelLayoutControls.tsx
index 8e8e640ee83e..950183addca9 100644
--- a/apps/web/src/components/chat/PanelLayoutControls.tsx
+++ b/apps/web/src/components/chat/PanelLayoutControls.tsx
@@ -78,7 +78,7 @@ export const PanelLayoutControls = memo(function PanelLayoutControls({
             {liveAgentCount > 0 ? (
               <span
                 aria-hidden
-                className="absolute -top-1 -right-1 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-[9px] font-semibold tabular-nums text-white"
+                className="absolute -top-1 -right-1 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-3xs font-semibold tabular-nums text-white"
               >
                 {liveAgentCount}
               </span>
diff --git a/apps/web/src/components/chat/ProposedPlanCard.tsx b/apps/web/src/components/chat/ProposedPlanCard.tsx
index 6639729e7bd9..63dfa7dd134f 100644
--- a/apps/web/src/components/chat/ProposedPlanCard.tsx
+++ b/apps/web/src/components/chat/ProposedPlanCard.tsx
@@ -146,7 +146,7 @@ export const ProposedPlanCard = memo(function ProposedPlanCard({
   };
 
   return (
-    <div className="rounded-[24px] border border-border/80 bg-card/70 p-4 sm:p-5">
+    <div className="rounded-3xl border border-border/80 bg-card/70 p-4 sm:p-5">
       <div className="flex flex-wrap items-center justify-between gap-3">
         <div className="flex min-w-0 items-center gap-2">
           <Badge variant="secondary">Plan</Badge>
diff --git a/apps/web/src/components/chat/ProviderInstanceIcon.tsx b/apps/web/src/components/chat/ProviderInstanceIcon.tsx
index b9f7853cd8ec..4f6d83eb92bf 100644
--- a/apps/web/src/components/chat/ProviderInstanceIcon.tsx
+++ b/apps/web/src/components/chat/ProviderInstanceIcon.tsx
@@ -38,7 +38,7 @@ export const ProviderInstanceIcon = memo(function ProviderInstanceIcon(props: {
       {Icon ? (
         <Icon className={cn("size-5 shrink-0", props.iconClassName)} aria-hidden />
       ) : (
-        <span className={cn("text-[10px] font-semibold leading-none", props.iconClassName)}>
+        <span className={cn("text-3xs font-semibold leading-none", props.iconClassName)}>
           {providerInstanceInitials(props.displayName)}
         </span>
       )}
@@ -55,9 +55,9 @@ export const ProviderInstanceIcon = memo(function ProviderInstanceIcon(props: {
       {props.showBadge ? (
         <span
           className={cn(
-            "pointer-events-none absolute right-0 bottom-0 z-10 flex h-3.5 min-w-3.5 items-center justify-center rounded-full border px-0.5 text-[8px] font-semibold leading-none shadow-sm",
+            "pointer-events-none absolute right-0 bottom-0 z-10 flex h-3.5 min-w-3.5 items-center justify-center rounded-full border px-0.5 text-3xs font-semibold leading-none shadow-sm",
             props.accentColor
-              ? "bg-[var(--provider-accent)] text-white"
+              ? "bg-(--provider-accent) text-white"
               : "bg-card text-muted-foreground",
             props.badgeClassName,
           )}
diff --git a/apps/web/src/components/chat/ProviderModelPicker.test.tsx b/apps/web/src/components/chat/ProviderModelPicker.test.tsx
index 41e86f841ee4..da8b262c0a55 100644
--- a/apps/web/src/components/chat/ProviderModelPicker.test.tsx
+++ b/apps/web/src/components/chat/ProviderModelPicker.test.tsx
@@ -174,6 +174,6 @@ describe("ProviderModelPicker", () => {
     expect(markup).toContain(">CP</span>");
     expect(markup).toContain("size-4");
     expect(markup).toContain("h-3");
-    expect(markup).toContain("text-[7px]");
+    expect(markup).toContain("text-3xs");
   });
 });
diff --git a/apps/web/src/components/chat/ProviderModelPicker.tsx b/apps/web/src/components/chat/ProviderModelPicker.tsx
index 4211f994b197..c24a3189435a 100644
--- a/apps/web/src/components/chat/ProviderModelPicker.tsx
+++ b/apps/web/src/components/chat/ProviderModelPicker.tsx
@@ -229,13 +229,13 @@ export const ProviderModelPicker = memo(function ProviderModelPicker(props: {
                       driverKind={selection.entry.driverKind}
                       displayName={selection.entry.displayName}
                       accentColor={selection.entry.accentColor}
-                      className="size-4 rounded-full bg-[var(--chat-composer-glass-surface,var(--background))] ring-2 ring-[var(--chat-composer-glass-surface,var(--background))]"
+                      className="size-4 rounded-full bg-(--chat-composer-glass-surface,var(--background)) ring-2 ring-(--chat-composer-glass-surface,var(--background))"
                       iconClassName="size-4"
                     />
                   ) : null,
                 )}
               {selectedEntries.length > 3 ? (
-                <span className="relative z-30 flex size-4 items-center justify-center rounded-full bg-[var(--chat-composer-glass-surface,var(--background))] text-[9px] ring-2 ring-[var(--chat-composer-glass-surface,var(--background))]">
+                <span className="relative z-30 flex size-4 items-center justify-center rounded-full bg-(--chat-composer-glass-surface,var(--background)) text-3xs ring-2 ring-(--chat-composer-glass-surface,var(--background))">
                   +{selectedEntries.length - 3}
                 </span>
               ) : null}
@@ -250,7 +250,7 @@ export const ProviderModelPicker = memo(function ProviderModelPicker(props: {
               iconClassName={cn("size-4", props.activeProviderIconClassName)}
               indicatorBackground={props.instanceIndicatorBackground ?? "var(--contrast-input)"}
               badgeClassName={cn(
-                "right-[-0.125rem] bottom-[-0.125rem] h-3 min-w-3 px-0.5 text-[7px]",
+                "right-[-0.125rem] bottom-[-0.125rem] h-3 min-w-3 px-0.5 text-3xs",
                 size === "xs" && "shadow-none",
               )}
             />
diff --git a/apps/web/src/components/chat/SnapShotAttachmentDetails.tsx b/apps/web/src/components/chat/SnapShotAttachmentDetails.tsx
index e23de85632b1..793da952c6ef 100644
--- a/apps/web/src/components/chat/SnapShotAttachmentDetails.tsx
+++ b/apps/web/src/components/chat/SnapShotAttachmentDetails.tsx
@@ -169,7 +169,7 @@ export function SnapShotContentsButton({
           {accessibilityDetails ? (
             <SnapShotAccessibilityData
               details={accessibilityDetails}
-              className="max-h-64 rounded-md border border-border/70 bg-muted/45 p-2.5 text-[11px] leading-4"
+              className="max-h-64 rounded-md border border-border/70 bg-muted/45 p-2.5 text-2xs leading-4"
             />
           ) : includesAccessibility ? (
             <div className="rounded-md border border-border/70 bg-muted/45 p-2.5 text-muted-foreground text-xs leading-4">
@@ -204,16 +204,16 @@ export function SnapShotAttachmentDetails({
       {source.appIconDataUrl ? (
         <img src={source.appIconDataUrl} alt="" className="size-7 shrink-0 rounded-md" />
       ) : (
-        <div className="flex size-7 shrink-0 items-center justify-center rounded-md bg-white/20 text-[10px] font-medium text-white uppercase">
+        <div className="flex size-7 shrink-0 items-center justify-center rounded-md bg-white/20 text-3xs font-medium text-white uppercase">
           {source.appName.slice(0, 1)}
         </div>
       )}
       <div className="min-w-0 flex-1">
-        <div className="flex min-w-0 items-center gap-1.5 text-[11px] font-medium leading-3.5 text-white">
+        <div className="flex min-w-0 items-center gap-1.5 text-2xs font-medium leading-3.5 text-white">
           <span className="truncate">{source.appName}</span>
           <SnapShotContentsButton source={source} className="pointer-events-auto" />
         </div>
-        <div className="truncate text-[9px] leading-3.5 text-white/70">
+        <div className="truncate text-3xs leading-3.5 text-white/70">
           {source.windowTitle || "Captured window"}
         </div>
       </div>
diff --git a/apps/web/src/components/chat/WorktreeSetupCard.tsx b/apps/web/src/components/chat/WorktreeSetupCard.tsx
index 03c7d4be8518..07e520315810 100644
--- a/apps/web/src/components/chat/WorktreeSetupCard.tsx
+++ b/apps/web/src/components/chat/WorktreeSetupCard.tsx
@@ -56,7 +56,7 @@ function useNowWhile(active: boolean): number {
 }
 
 function StageIcon({ status }: { status: WorktreeSetupStage["status"] }) {
-  const className = "size-4 shrink-0 stroke-[1.8]";
+  const className = "size-4 shrink-0 stroke-2";
   switch (status) {
     case "done":
       return <CheckIcon aria-hidden className={className} />;
@@ -240,7 +240,7 @@ function OutputTail({ lines, failed }: { lines: ReadonlyArray<string>; failed: b
   return (
     <pre
       className={cn(
-        "mb-1 ml-8 overflow-hidden rounded-md border px-2.5 py-1.5 font-mono text-[11px] leading-relaxed select-text",
+        "mb-1 ml-8 overflow-hidden rounded-md border px-2.5 py-1.5 font-mono text-2xs leading-relaxed select-text",
         failed
           ? "border-destructive/20 bg-error-surface text-destructive-foreground"
           : "border-border bg-code text-muted-foreground",
diff --git a/apps/web/src/components/clerk/ClerkUserProfilePage.tsx b/apps/web/src/components/clerk/ClerkUserProfilePage.tsx
index 4a1c9ccf99c1..f0fedc8d740e 100644
--- a/apps/web/src/components/clerk/ClerkUserProfilePage.tsx
+++ b/apps/web/src/components/clerk/ClerkUserProfilePage.tsx
@@ -22,9 +22,9 @@ export function ClerkUserProfilePage({
     <div className={cn("w-full min-w-0 text-foreground", className)}>
       <header className="flex flex-col gap-3 pb-4 sm:flex-row sm:items-start sm:justify-between sm:gap-4 sm:pr-8">
         <div className="min-w-0">
-          <h2 className="text-[1.0625rem] leading-6 font-semibold">{title}</h2>
+          <h2 className="text-base leading-6 font-semibold">{title}</h2>
           {description ? (
-            <p className="mt-1 max-w-[34rem] text-[0.8125rem] leading-[1.125rem] text-muted-foreground sm:min-h-9">
+            <p className="mt-1 max-w-[34rem] text-xs leading-4.5 text-muted-foreground sm:min-h-9">
               {description}
             </p>
           ) : null}
diff --git a/apps/web/src/components/clerk/MobileClientsUserProfilePage.tsx b/apps/web/src/components/clerk/MobileClientsUserProfilePage.tsx
index 502d6f658059..ff5422462590 100644
--- a/apps/web/src/components/clerk/MobileClientsUserProfilePage.tsx
+++ b/apps/web/src/components/clerk/MobileClientsUserProfilePage.tsx
@@ -38,14 +38,14 @@ function MobileClientRow({ device }: { readonly device: RelayClientDeviceRecord
     <ClerkUserProfileRow icon={<SmartphoneIcon className="size-4" />}>
       <div className="flex flex-col gap-0.5 sm:flex-row sm:items-start sm:justify-between sm:gap-3">
         <div className="min-w-0">
-          <h3 className="truncate text-[0.8125rem] leading-[1.125rem] font-medium text-foreground">
+          <h3 className="truncate text-sm leading-4.5 font-medium text-foreground">
             {device.label}
           </h3>
-          <p className="text-xs leading-[1.125rem] text-muted-foreground">
+          <p className="text-xs leading-4.5 text-muted-foreground">
             {mobileClientPlatformLabel(device)}
           </p>
         </div>
-        <p className="shrink-0 text-[0.6875rem] leading-4 text-muted-foreground/75">
+        <p className="shrink-0 text-2xs leading-4 text-muted-foreground/75">
           {mobileClientUpdatedAtLabel(device.updatedAt)}
         </p>
       </div>
@@ -56,7 +56,7 @@ function MobileClientRow({ device }: { readonly device: RelayClientDeviceRecord
         />
         <MobileClientStatusBadge enabled={device.liveActivities.enabled} label="Live Activities" />
       </div>
-      <p className="mt-1.5 text-xs leading-[1.125rem] text-muted-foreground/80">
+      <p className="mt-1.5 text-xs leading-4.5 text-muted-foreground/80">
         {mobileClientNotificationDetail(device)}
       </p>
     </ClerkUserProfileRow>
@@ -123,7 +123,7 @@ export function MobileClientsUserProfilePage() {
       <div>
         {devicesState.error ? (
           <div
-            className="mb-4 flex flex-col gap-3 border-t border-destructive/35 py-3 text-[0.8125rem] sm:flex-row sm:items-center sm:justify-between"
+            className="mb-4 flex flex-col gap-3 border-t border-destructive/35 py-3 text-xs sm:flex-row sm:items-center sm:justify-between"
             role="alert"
           >
             <div>
diff --git a/apps/web/src/components/clerk/T3ConnectUserProfilePage.tsx b/apps/web/src/components/clerk/T3ConnectUserProfilePage.tsx
index f0fd0f06ac08..284655babbb8 100644
--- a/apps/web/src/components/clerk/T3ConnectUserProfilePage.tsx
+++ b/apps/web/src/components/clerk/T3ConnectUserProfilePage.tsx
@@ -51,10 +51,10 @@ export function T3ConnectEnvironmentRow(props: {
       <Collapsible open={props.confirmationOpen} onOpenChange={props.onConfirmationChange}>
         <div className="flex items-start gap-4">
           <div className="min-w-0 flex-1">
-            <h3 className="truncate text-[0.8125rem] leading-[1.125rem] font-medium text-foreground">
+            <h3 className="truncate text-sm leading-4.5 font-medium text-foreground">
               {environment.label}
             </h3>
-            <p className="mt-1 text-xs leading-[1.125rem] text-muted-foreground">
+            <p className="mt-1 text-xs leading-4.5 text-muted-foreground">
               {linkedAtLabel(environment.linkedAt)} · {endpointLabel(environment)}
             </p>
           </div>
@@ -74,13 +74,13 @@ export function T3ConnectEnvironmentRow(props: {
               role="group"
               aria-label={`Confirm deregistration of ${environment.label}`}
             >
-              <h4 className="text-[0.8125rem] leading-[1.125rem] font-semibold text-foreground">
+              <h4 className="text-sm leading-4.5 font-semibold text-foreground">
                 Deregister server
               </h4>
-              <p className="mt-1 text-[0.8125rem] leading-[1.125rem] text-muted-foreground">
+              <p className="mt-1 text-xs leading-4.5 text-muted-foreground">
                 “{environment.label}” will be removed from this account.
               </p>
-              <p className="mt-4 max-w-xl text-[0.8125rem] leading-[1.125rem] text-muted-foreground">
+              <p className="mt-4 max-w-xl text-xs leading-4.5 text-muted-foreground">
                 T3 Connect access will be revoked, any managed tunnel will be removed, and a host
                 space will become available. Local connections on your devices are not changed.
               </p>
@@ -205,7 +205,7 @@ export function T3ConnectUserProfilePage() {
     >
       <div>
         {environmentsState.error ? (
-          <div className="mb-4 border-t border-destructive/35 py-3 text-[0.8125rem]" role="alert">
+          <div className="mb-4 border-t border-destructive/35 py-3 text-xs" role="alert">
             <p className="font-medium text-destructive-foreground">
               Could not load T3 Connect environments
             </p>
@@ -214,7 +214,7 @@ export function T3ConnectUserProfilePage() {
         ) : null}
 
         {isInitialLoad ? (
-          <p className="border-t py-4 text-[0.8125rem] text-muted-foreground" role="status">
+          <p className="border-t py-4 text-xs text-muted-foreground" role="status">
             Loading environments…
           </p>
         ) : environments.length > 0 ? (
diff --git a/apps/web/src/components/cloud/ConnectCliAuthSurface.tsx b/apps/web/src/components/cloud/ConnectCliAuthSurface.tsx
index 408d2bbe36e0..4bae618a81e0 100644
--- a/apps/web/src/components/cloud/ConnectCliAuthSurface.tsx
+++ b/apps/web/src/components/cloud/ConnectCliAuthSurface.tsx
@@ -23,9 +23,7 @@ function ConnectCliAuthMessage({
   return (
     <>
       {eyebrow ? (
-        <p className="text-[10px] font-semibold tracking-[0.18em] text-primary uppercase">
-          {eyebrow}
-        </p>
+        <p className="text-3xs font-semibold tracking-widest text-primary uppercase">{eyebrow}</p>
       ) : null}
       <h1 className="mt-2 text-2xl font-semibold tracking-tight sm:text-3xl">{title}</h1>
       <p className="mt-2 text-sm leading-relaxed text-muted-foreground">{description}</p>
diff --git a/apps/web/src/components/composerContextPresentation.tsx b/apps/web/src/components/composerContextPresentation.tsx
index 01f05f7f9721..15a75a1d4f65 100644
--- a/apps/web/src/components/composerContextPresentation.tsx
+++ b/apps/web/src/components/composerContextPresentation.tsx
@@ -269,7 +269,7 @@ function ComposerReviewCommentDetails({ comment }: { comment: ReviewCommentConte
     <div className="space-y-2 overflow-hidden rounded-lg border border-border/70 bg-background/70 p-3">
       <div className="space-y-1">
         <div className="truncate text-xs font-medium text-foreground">{comment.filePath}</div>
-        <div className="text-secondary-label text-[11px]">
+        <div className="text-secondary-label text-2xs">
           {comment.sectionTitle} · {comment.rangeLabel}
         </div>
       </div>
diff --git a/apps/web/src/components/contextChipParts.tsx b/apps/web/src/components/contextChipParts.tsx
index 4517bbd61056..cf45749351f3 100644
--- a/apps/web/src/components/contextChipParts.tsx
+++ b/apps/web/src/components/contextChipParts.tsx
@@ -208,8 +208,8 @@ export function ImageChipButton({
         <ImageIcon />
       )}
       <ContextChipLabel className="max-w-72">{middleTruncateAttachmentName(name)}</ContextChipLabel>
-      <span className="shrink-0 text-[10px] text-current">{size}</span>
-      {suffix ? <span className="text-[10px] text-current">{suffix}</span> : null}
+      <span className="shrink-0 text-3xs text-current">{size}</span>
+      {suffix ? <span className="text-3xs text-current">{suffix}</span> : null}
     </ContextChip>
   );
 }
@@ -284,8 +284,8 @@ function FileChipContent(props: {
       <ContextChipLabel className="max-w-72">
         {middleTruncateAttachmentName(props.name)}
       </ContextChipLabel>
-      <span className="shrink-0 text-[10px] text-current">{props.size}</span>
-      {props.suffix ? <span className="text-[10px] text-current">{props.suffix}</span> : null}
+      <span className="shrink-0 text-3xs text-current">{props.size}</span>
+      {props.suffix ? <span className="text-3xs text-current">{props.suffix}</span> : null}
     </>
   );
 }
diff --git a/apps/web/src/components/device/DeviceStreamView.tsx b/apps/web/src/components/device/DeviceStreamView.tsx
index 0a4cfb97b1bf..f5457efd0024 100644
--- a/apps/web/src/components/device/DeviceStreamView.tsx
+++ b/apps/web/src/components/device/DeviceStreamView.tsx
@@ -404,7 +404,7 @@ export function DeviceStreamView(props: {
                   }}
                 >
                   {element.label ? (
-                    <span className="absolute -top-3.5 left-0 max-w-full truncate rounded-sm bg-info px-1 text-[9px] leading-3.5 text-white">
+                    <span className="absolute -top-3.5 left-0 max-w-full truncate rounded-sm bg-info px-1 text-3xs leading-3.5 text-white">
                       {element.label}
                     </span>
                   ) : null}
diff --git a/apps/web/src/components/device/DeviceToolsPanel.tsx b/apps/web/src/components/device/DeviceToolsPanel.tsx
index 3d7bd2ae7f2c..e0247d743998 100644
--- a/apps/web/src/components/device/DeviceToolsPanel.tsx
+++ b/apps/web/src/components/device/DeviceToolsPanel.tsx
@@ -640,7 +640,7 @@ function EventLogSection(props: {
         />
       </CollapsibleTrigger>
       <CollapsiblePanel>
-        <ol className="max-h-64 overflow-y-auto px-3 py-2 font-mono text-[11px] leading-relaxed">
+        <ol className="max-h-64 overflow-y-auto px-3 py-2 font-mono text-2xs leading-relaxed">
           {entries.length === 0 ? (
             <li className="text-muted-foreground">No events yet.</li>
           ) : (
diff --git a/apps/web/src/components/diffs/DiffCommentAnnotation.tsx b/apps/web/src/components/diffs/DiffCommentAnnotation.tsx
index ba046566cb01..7126ccbbb2e2 100644
--- a/apps/web/src/components/diffs/DiffCommentAnnotation.tsx
+++ b/apps/web/src/components/diffs/DiffCommentAnnotation.tsx
@@ -65,7 +65,7 @@ export function DiffCommentAnnotation({
         onPointerDown={(event) => event.stopPropagation()}
       >
         <MessageCircle className="mt-0.5 size-3.5 shrink-0 text-primary/70" aria-hidden="true" />
-        <p className="min-w-0 flex-1 whitespace-pre-wrap text-[13px] leading-5">{displayedText}</p>
+        <p className="min-w-0 flex-1 whitespace-pre-wrap text-sm leading-5">{displayedText}</p>
         {onDelete ? (
           <span className="-my-1 -mr-1 flex shrink-0 opacity-0 transition-opacity group-hover/comment:opacity-100 focus-within:opacity-100 max-sm:opacity-100">
             <Button
@@ -113,7 +113,7 @@ export function DiffCommentAnnotation({
         }}
       />
       <div className="mt-1.5 flex items-center gap-1">
-        <span className="mr-auto text-[10px] text-muted-foreground/70">⌘/Ctrl Enter to send</span>
+        <span className="mr-auto text-3xs text-muted-foreground/70">⌘/Ctrl Enter to send</span>
         <Button variant="ghost-muted" size="xs" onClick={onCancel}>
           Cancel
         </Button>
diff --git a/apps/web/src/components/files/FilePreviewPanel.tsx b/apps/web/src/components/files/FilePreviewPanel.tsx
index d51141d7896f..9d389ec31bb8 100644
--- a/apps/web/src/components/files/FilePreviewPanel.tsx
+++ b/apps/web/src/components/files/FilePreviewPanel.tsx
@@ -1172,7 +1172,7 @@ export default function FilePreviewPanel({
       !isMedia &&
       !renderBrowserFile &&
       file.data?.truncated ? (
-        <div className="shrink-0 border-b border-warning/20 bg-warning-surface px-3 py-1.5 text-[11px] text-warning-foreground">
+        <div className="shrink-0 border-b border-warning/20 bg-warning-surface px-3 py-1.5 text-2xs text-warning-foreground">
           Preview limited to the first 1 MB of a {file.data.byteLength.toLocaleString()} byte file.
         </div>
       ) : null}
diff --git a/apps/web/src/components/files/fileSurfaceChrome.tsx b/apps/web/src/components/files/fileSurfaceChrome.tsx
index 4425ba6cd5e8..d5263f73377c 100644
--- a/apps/web/src/components/files/fileSurfaceChrome.tsx
+++ b/apps/web/src/components/files/fileSurfaceChrome.tsx
@@ -114,7 +114,7 @@ export function FileSurfaceNotice(props: { readonly children: ReactNode }) {
   return (
     <div
       role="status"
-      className="shrink-0 border-b border-warning/20 bg-warning-surface px-3 py-1.5 text-[11px] text-warning-foreground"
+      className="shrink-0 border-b border-warning/20 bg-warning-surface px-3 py-1.5 text-2xs text-warning-foreground"
     >
       {props.children}
     </div>
diff --git a/apps/web/src/components/onboarding/WelcomeWizard.tsx b/apps/web/src/components/onboarding/WelcomeWizard.tsx
index 169f1f8b0575..66e99359abae 100644
--- a/apps/web/src/components/onboarding/WelcomeWizard.tsx
+++ b/apps/web/src/components/onboarding/WelcomeWizard.tsx
@@ -193,7 +193,7 @@ export function WelcomeWizard({
           identity={
             <div className="flex items-baseline gap-1.5" role="img" aria-label="T3 Code">
               <T3Wordmark className="h-4 w-auto shrink-0" aria-hidden />
-              <span className="text-[1.4rem] font-medium tracking-tight text-muted-foreground">
+              <span className="text-2xl font-medium tracking-tight text-muted-foreground">
                 Code
               </span>
             </div>
@@ -892,7 +892,7 @@ function AgentInstallTerminal({
       className="mt-4 overflow-hidden rounded-lg border border-border/70 bg-background text-foreground"
     >
       <div className="flex items-center justify-between border-b border-border/60 bg-background/60 px-3 py-1.5">
-        <span className="text-[11px] font-medium text-muted-foreground">
+        <span className="text-2xs font-medium text-muted-foreground">
           {setupState === "writeFailed" ? (
             <>
               Run <code className="rounded bg-muted px-1 font-mono">{command}</code> in this
@@ -1445,9 +1445,7 @@ function ImportCandidateRow({
             {label}
           </span>
           {secondary !== undefined ? (
-            <span className="truncate font-mono text-[11px] text-muted-foreground">
-              {secondary}
-            </span>
+            <span className="truncate font-mono text-2xs text-muted-foreground">{secondary}</span>
           ) : null}
         </TooltipTrigger>
         <TooltipPopup variant="code">{candidate.path}</TooltipPopup>
diff --git a/apps/web/src/components/preview/AgentBrowserCursor.tsx b/apps/web/src/components/preview/AgentBrowserCursor.tsx
index 408f268fa0c4..b9de15d980e0 100644
--- a/apps/web/src/components/preview/AgentBrowserCursor.tsx
+++ b/apps/web/src/components/preview/AgentBrowserCursor.tsx
@@ -55,7 +55,7 @@ function AgentBrowserCursorEvent(props: {
 
   return (
     <div
-      className="pointer-events-none absolute left-0 top-0 z-40 transition-[transform,opacity] duration-150 ease-out motion-reduce:transition-none"
+      className="pointer-events-none absolute left-0 top-0 z-40 transition-[opacity,transform] duration-150 ease-out motion-reduce:transition-none"
       style={{
         opacity: agentBrowserCursorOpacity(active, controller),
         transform: `translate3d(${event.x * zoomFactor * (content?.scale ?? 1) + (content?.x ?? 0) - (content?.scrollLeft ?? 0)}px, ${event.y * zoomFactor * (content?.scale ?? 1) + (content?.y ?? 0) - (content?.scrollTop ?? 0)}px, 0)`,
diff --git a/apps/web/src/components/preview/BrowserMockup.tsx b/apps/web/src/components/preview/BrowserMockup.tsx
index 35cfbb421e7c..b89cdc07613a 100644
--- a/apps/web/src/components/preview/BrowserMockup.tsx
+++ b/apps/web/src/components/preview/BrowserMockup.tsx
@@ -6,16 +6,16 @@ export function BrowserMockup({ className }: { className?: string }) {
     <div
       aria-hidden
       className={cn(
-        "relative flex flex-col gap-0.5 overflow-hidden rounded-[5px] border border-border/60 bg-card p-1 shadow-xs/5",
+        "relative flex flex-col gap-0.5 overflow-hidden rounded-sm border border-border/60 bg-card p-1 shadow-xs/5",
         className,
       )}
     >
-      <div className="flex gap-[2px]">
+      <div className="flex gap-0.5">
         <span className="size-[3px] rounded-full bg-destructive/80" />
         <span className="size-[3px] rounded-full bg-warning/80" />
         <span className="size-[3px] rounded-full bg-success/80" />
       </div>
-      <div className="mt-[1px] flex flex-1 flex-col gap-[2px]">
+      <div className="mt-[1px] flex flex-1 flex-col gap-0.5">
         <span className="h-[2px] w-full rounded-full bg-muted-foreground/30" />
         <span className="h-[2px] w-3/5 rounded-full bg-muted-foreground/20" />
       </div>
diff --git a/apps/web/src/components/preview/PreviewPanelShell.tsx b/apps/web/src/components/preview/PreviewPanelShell.tsx
index 71dde5b3ad91..b436932f7c4c 100644
--- a/apps/web/src/components/preview/PreviewPanelShell.tsx
+++ b/apps/web/src/components/preview/PreviewPanelShell.tsx
@@ -126,7 +126,7 @@ export function PreviewPanelShell(props: {
             : "shrink-0 border-l border-border"
           : "w-full",
         collapsible &&
-          "[[data-panel-animations=true]_&]:transition-[width] [[data-panel-animations=true]_&]:[transition-duration:var(--panel-animation-duration)] [[data-panel-animations=true]_&]:ease-out",
+          "[[data-panel-animations=true]_&]:transition-[width] [[data-panel-animations=true]_&]:duration-(--panel-animation-duration) [[data-panel-animations=true]_&]:ease-out",
         collapsible && open && "[[data-panel-animations=true]_&]:starting:w-0!",
         collapsible && !open && "pointer-events-none",
       )}
diff --git a/apps/web/src/components/pullRequest/PullRequestCodeTab.tsx b/apps/web/src/components/pullRequest/PullRequestCodeTab.tsx
index 1139b412bde5..251f3cd49f95 100644
--- a/apps/web/src/components/pullRequest/PullRequestCodeTab.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestCodeTab.tsx
@@ -828,7 +828,7 @@ function PullRequestCodeTab({
         <PullRequestDiffStat
           additions={additions}
           deletions={deletions}
-          className="font-mono text-[11px]"
+          className="font-mono text-2xs"
         />
       );
       const viewedFiles = filesViewedRef.current;
@@ -842,7 +842,7 @@ function PullRequestCodeTab({
               attribute is what the header's capture listener looks for. */}
           <label
             data-viewed-toggle=""
-            className="flex cursor-pointer select-none items-center gap-1.5 text-[11px] text-muted-foreground"
+            className="flex cursor-pointer select-none items-center gap-1.5 text-2xs text-muted-foreground"
             onClick={(event) => event.stopPropagation()}
           >
             <Checkbox
diff --git a/apps/web/src/components/pullRequest/PullRequestComposer.tsx b/apps/web/src/components/pullRequest/PullRequestComposer.tsx
index fedd76610e87..e00df846f39e 100644
--- a/apps/web/src/components/pullRequest/PullRequestComposer.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestComposer.tsx
@@ -93,7 +93,7 @@ export function PullRequestComposer({
         {pendingComments.length > 0 ? (
           <span
             aria-hidden
-            className="absolute -top-1 -right-1 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-[9px] font-semibold tabular-nums text-white"
+            className="absolute -top-1 -right-1 flex h-3.5 min-w-3.5 items-center justify-center rounded-full bg-info px-1 text-3xs font-semibold tabular-nums text-white"
           >
             {pendingComments.length}
           </span>
diff --git a/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx b/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
index e8507ae3cfe6..1b42fdd4481a 100644
--- a/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestDetailPanel.tsx
@@ -2260,7 +2260,7 @@ export function PullRequestDetailPanel({
                     <span className="shrink-0">{formatRelativeTimeLabel(detail.updatedAt)}</span>
                   </span>
                   <span aria-hidden className="h-3 w-px shrink-0 bg-border/70" />
-                  <span className="flex min-w-0 flex-1 items-center gap-1.5 font-mono text-[11px] text-muted-foreground/65">
+                  <span className="flex min-w-0 flex-1 items-center gap-1.5 font-mono text-2xs text-muted-foreground/65">
                     {/* An out-of-date base wears the warning on the branch name itself, so the
                         name is amber and pointing at either the name or the mark opens the way
                         out. Up to date, the name keeps its plain tooltip. */}
@@ -2322,7 +2322,7 @@ export function PullRequestDetailPanel({
                       <TooltipPopup side="top">{detail.headBranch}</TooltipPopup>
                     </Tooltip>
                   </span>
-                  <span className="ml-auto inline-flex shrink-0 items-center justify-end gap-2 text-[11px]">
+                  <span className="ml-auto inline-flex shrink-0 items-center justify-end gap-2 text-2xs">
                     <span
                       className="inline-flex items-center gap-1 tabular-nums"
                       aria-label={`${detail.changedFiles.toLocaleString()} changed ${
@@ -2335,7 +2335,7 @@ export function PullRequestDetailPanel({
                     <PullRequestDiffStat
                       additions={detail.additions}
                       deletions={detail.deletions}
-                      className="shrink-0 font-mono text-[11px]"
+                      className="shrink-0 font-mono text-2xs"
                     />
                   </span>
                 </div>
@@ -2609,7 +2609,7 @@ export function PullRequestDetailPanel({
               <div className="ml-auto flex shrink-0 items-center gap-2 text-xs text-muted-foreground">
                 <PullRequestMetaLine
                   className={cn(
-                    "whitespace-nowrap text-[11px] transition-opacity",
+                    "whitespace-nowrap text-2xs transition-opacity",
                     (activityPending || activityError) && "opacity-35",
                   )}
                 >
diff --git a/apps/web/src/components/pullRequest/PullRequestLinkPreview.tsx b/apps/web/src/components/pullRequest/PullRequestLinkPreview.tsx
index c5a60eecfde4..76aaebbf62d1 100644
--- a/apps/web/src/components/pullRequest/PullRequestLinkPreview.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestLinkPreview.tsx
@@ -106,7 +106,7 @@ export function PullRequestLinkPreview({
               ))
             ) : (
               <div className="min-w-0">
-                <div className="flex min-w-0 items-center gap-1.5 text-[11px] text-muted-foreground">
+                <div className="flex min-w-0 items-center gap-1.5 text-2xs text-muted-foreground">
                   <span className="min-w-0 truncate">{detail.repository}</span>
                   <span className="shrink-0">#{detail.number}</span>
                   <span aria-hidden>·</span>
diff --git a/apps/web/src/components/pullRequest/PullRequestListRow.tsx b/apps/web/src/components/pullRequest/PullRequestListRow.tsx
index ea1577a23558..67dcb6a5f3cf 100644
--- a/apps/web/src/components/pullRequest/PullRequestListRow.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestListRow.tsx
@@ -68,7 +68,7 @@ export function PullRequestRowGlyph({
           />
         </span>
       </span>
-      {below ? <span className="inline-flex text-[11px]">{below}</span> : null}
+      {below ? <span className="inline-flex text-2xs">{below}</span> : null}
     </span>
   );
 }
@@ -100,15 +100,15 @@ export function PullRequestRowLines({
         {number}
         <span className="min-w-0 truncate text-sm">{title}</span>
         {signals ? (
-          <span className="flex shrink-0 items-center gap-1 text-[11px]">{signals}</span>
+          <span className="flex shrink-0 items-center gap-1 text-2xs">{signals}</span>
         ) : null}
         {status ? (
-          <span className="ml-auto flex shrink-0 items-center gap-1.5 text-[11px]">{status}</span>
+          <span className="ml-auto flex shrink-0 items-center gap-1.5 text-2xs">{status}</span>
         ) : null}
       </span>
       <span
         className={cn(
-          "flex min-w-0 items-center gap-1.5 overflow-hidden text-[11px] text-muted-foreground",
+          "flex min-w-0 items-center gap-1.5 overflow-hidden text-2xs text-muted-foreground",
           metaClassName,
         )}
       >
diff --git a/apps/web/src/components/pullRequest/PullRequestRow.tsx b/apps/web/src/components/pullRequest/PullRequestRow.tsx
index 898f58ecb220..04008281f5e7 100644
--- a/apps/web/src/components/pullRequest/PullRequestRow.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestRow.tsx
@@ -204,7 +204,7 @@ function PullRequestRowImpl({
               <Tooltip>
                 <TooltipTrigger
                   render={
-                    <span className="flex min-w-6 items-center gap-1 overflow-hidden rounded-full border border-border/60 px-1 text-[10px]" />
+                    <span className="flex min-w-6 items-center gap-1 overflow-hidden rounded-full border border-border/60 px-1 text-3xs" />
                   }
                 >
                   <span className="sr-only">matched in the description</span>
diff --git a/apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx b/apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx
index 100a0f5737b9..cd2eaf6de501 100644
--- a/apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestSummaryTab.tsx
@@ -401,7 +401,7 @@ function CommentGroup({
               </span>
             ))}
             {authors.length > 3 ? (
-              <span className="relative flex size-6 items-center justify-center rounded-full bg-muted text-[10px] text-muted-foreground ring-2 ring-background">
+              <span className="relative flex size-6 items-center justify-center rounded-full bg-muted text-3xs text-muted-foreground ring-2 ring-background">
                 +{authors.length - 3}
               </span>
             ) : null}
@@ -412,7 +412,7 @@ function CommentGroup({
           >
             <span className="min-w-0 flex-1 space-y-1">
               <span className="block text-xs font-medium text-foreground/90">{label}</span>
-              <span className="flex flex-wrap gap-x-1.5 text-[11px] text-muted-foreground">
+              <span className="flex flex-wrap gap-x-1.5 text-2xs text-muted-foreground">
                 <span>
                   {authors.length} {authors.length === 1 ? "author" : "authors"}
                 </span>
diff --git a/apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx b/apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx
index e237848ffad0..9435304f6d7e 100644
--- a/apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx
+++ b/apps/web/src/components/pullRequest/PullRequestTimelineTab.tsx
@@ -141,7 +141,7 @@ function ActorTimelineMarker({
       <PullRequestActorAvatar
         actor={actor}
         className={cn(
-          "size-7 bg-muted text-[9px] transition-opacity",
+          "size-7 bg-muted text-3xs transition-opacity",
           muted && "opacity-45 grayscale",
         )}
       />
@@ -156,9 +156,7 @@ function friendlyReviewState(value: string): string {
 
 function ReviewStateBadge({ state }: { state: string }) {
   return (
-    <span className="text-[10px] font-medium text-muted-foreground">
-      {friendlyReviewState(state)}
-    </span>
+    <span className="text-3xs font-medium text-muted-foreground">{friendlyReviewState(state)}</span>
   );
 }
 
@@ -224,7 +222,7 @@ function ConversationCard({
               <span className="text-muted-foreground">{event.title}</span>
               {event.reviewState ? <ReviewStateBadge state={event.reviewState} /> : null}
             </div>
-            <PullRequestMetaLine className="mt-1 flex-wrap text-[11px] text-muted-foreground">
+            <PullRequestMetaLine className="mt-1 flex-wrap text-2xs text-muted-foreground">
               <span>{formatRelativeTimeLabel(event.at)}</span>
               {event.path ? (
                 <span className="inline-flex min-w-0 items-center gap-1">
@@ -330,7 +328,7 @@ function ConversationGroup({
               <span className="block text-xs font-semibold">
                 {events.length.toLocaleString()} {events.length === 1 ? "comment" : "comments"}
               </span>
-              <span className="block truncate text-[10px] text-muted-foreground">
+              <span className="block truncate text-3xs text-muted-foreground">
                 {actors.length.toLocaleString()} {actors.length === 1 ? "author" : "authors"} ·{" "}
                 {formatRelativeTimeLabel(first.at)}
               </span>
@@ -391,7 +389,7 @@ function CommitEvent({
           <div className="truncate text-xs font-semibold text-foreground transition-colors group-hover:text-primary">
             {event.body ?? "Untitled commit"}
           </div>
-          <div className="mt-1 flex flex-wrap items-center gap-x-2 gap-y-0.5 text-[10px] text-muted-foreground">
+          <div className="mt-1 flex flex-wrap items-center gap-x-2 gap-y-0.5 text-3xs text-muted-foreground">
             <code className="font-mono">{event.id.slice(0, 7)}</code>
             <span>{formatRelativeTimeLabel(event.at)}</span>
           </div>
@@ -400,7 +398,7 @@ function CommitEvent({
           <PullRequestDiffStat
             additions={event.additions}
             deletions={event.deletions}
-            className="ml-auto shrink-0 font-mono text-[10px]"
+            className="ml-auto shrink-0 font-mono text-3xs"
           />
         ) : null}
       </div>
@@ -433,7 +431,7 @@ function LifecycleEvent({ event }: { event: PullRequestTimelineEvent }) {
           {event.actor ? <ActorName actor={event.actor} /> : null}
           <span className="font-semibold text-foreground">{presentation.label}</span>
         </div>
-        <div className="mt-0.5 text-[11px] text-muted-foreground">
+        <div className="mt-0.5 text-2xs text-muted-foreground">
           {formatRelativeTimeLabel(event.at)}
         </div>
       </div>
@@ -500,7 +498,7 @@ function ReviewVerdictEvent({
             </Tooltip>
           </div>
           <div className="mt-0.5 flex min-w-0 flex-wrap items-center gap-x-2 gap-y-1">
-            <PullRequestMetaLine className="flex-wrap text-[11px] text-muted-foreground">
+            <PullRequestMetaLine className="flex-wrap text-2xs text-muted-foreground">
               <span>{formatRelativeTimeLabel(event.at)}</span>
               {event.path ? (
                 <span className="inline-flex min-w-0 items-center gap-1">
diff --git a/apps/web/src/components/pullRequest/ThreadPullRequestsPanel.tsx b/apps/web/src/components/pullRequest/ThreadPullRequestsPanel.tsx
index 15221f26e63d..25044d87324e 100644
--- a/apps/web/src/components/pullRequest/ThreadPullRequestsPanel.tsx
+++ b/apps/web/src/components/pullRequest/ThreadPullRequestsPanel.tsx
@@ -297,7 +297,7 @@ function EnabledThreadPullRequestsPanel({ threadRef }: { threadRef: ScopedThread
           ))}
         </div>
       </ScrollArea>
-      <footer className="flex items-center justify-between border-t border-border/60 px-2 py-1.5 text-[.7rem] text-muted-foreground">
+      <footer className="flex items-center justify-between border-t border-border/60 px-2 py-1.5 text-2xs text-muted-foreground">
         <span>
           {openCount} open · {links.length} linked
           {lastSynced ? ` · synced ${formatRelativeTimeLabel(lastSynced)}` : ""}
diff --git a/apps/web/src/components/pullRequest/pullRequestPresentation.tsx b/apps/web/src/components/pullRequest/pullRequestPresentation.tsx
index 7b8ca6ca69ff..3ab443363cd2 100644
--- a/apps/web/src/components/pullRequest/pullRequestPresentation.tsx
+++ b/apps/web/src/components/pullRequest/pullRequestPresentation.tsx
@@ -428,7 +428,7 @@ export function PullRequestActorAvatar({
     <span
       aria-hidden
       className={cn(
-        "flex size-4 shrink-0 items-center justify-center rounded-full bg-muted text-[8px] font-medium text-muted-foreground",
+        "flex size-4 shrink-0 items-center justify-center rounded-full bg-muted text-3xs font-medium text-muted-foreground",
         className,
       )}
     >
diff --git a/apps/web/src/components/search/HighlightedSearchLine.tsx b/apps/web/src/components/search/HighlightedSearchLine.tsx
index 9d5296227765..c10f33856509 100644
--- a/apps/web/src/components/search/HighlightedSearchLine.tsx
+++ b/apps/web/src/components/search/HighlightedSearchLine.tsx
@@ -111,7 +111,7 @@ function HighlightedTokens(props: {
     .map((segment) =>
       segment.isMatch ? (
         <mark
-          className="rounded-[2px] bg-primary/25 text-inherit"
+          className="rounded-xs bg-primary/25 text-inherit"
           key={`${segment.start}:${segment.end}:match`}
           style={tokenStyle(segment.token)}
         >
diff --git a/apps/web/src/components/search/ProjectContentSearchDialog.tsx b/apps/web/src/components/search/ProjectContentSearchDialog.tsx
index 2812b6004692..23a220cf0ef1 100644
--- a/apps/web/src/components/search/ProjectContentSearchDialog.tsx
+++ b/apps/web/src/components/search/ProjectContentSearchDialog.tsx
@@ -265,7 +265,7 @@ function OpenContentSearchDialog(props: {
                         {path.directory}
                       </span>
                     ) : null}
-                    <span className="ml-auto rounded-full bg-muted px-1.5 py-0.5 tabular-nums text-[10px] text-muted-foreground">
+                    <span className="ml-auto rounded-full bg-muted px-1.5 py-0.5 tabular-nums text-3xs text-muted-foreground">
                       {group.matches.length}
                     </span>
                   </div>
diff --git a/apps/web/src/components/settings/AddProviderInstanceDialog.tsx b/apps/web/src/components/settings/AddProviderInstanceDialog.tsx
index 806a887822fc..f1d028a3d2c1 100644
--- a/apps/web/src/components/settings/AddProviderInstanceDialog.tsx
+++ b/apps/web/src/components/settings/AddProviderInstanceDialog.tsx
@@ -310,7 +310,7 @@ export function AddProviderInstanceDialog({
               value={label}
               onChange={(event) => setLabel(event.target.value)}
             />
-            <span className="text-[11px] text-muted-foreground">
+            <span className="text-2xs text-muted-foreground">
               Shown in the provider list. Optional.
             </span>
           </label>
@@ -326,9 +326,9 @@ export function AddProviderInstanceDialog({
               aria-invalid={showInstanceIdError}
             />
             {showInstanceIdError ? (
-              <span className="text-[11px] text-destructive">{instanceIdError}</span>
+              <span className="text-2xs text-destructive">{instanceIdError}</span>
             ) : (
-              <span className="text-[11px] text-muted-foreground">
+              <span className="text-2xs text-muted-foreground">
                 Routing key used by threads and sessions. Letters, digits, '-', or '_'.
               </span>
             )}
@@ -374,7 +374,7 @@ export function AddProviderInstanceDialog({
                 </Button>
               ) : null}
             </div>
-            <span className="text-[11px] text-muted-foreground">
+            <span className="text-2xs text-muted-foreground">
               Optional marker shown in the picker.
             </span>
           </div>
diff --git a/apps/web/src/components/settings/ConnectionsSettings.tsx b/apps/web/src/components/settings/ConnectionsSettings.tsx
index 6455831ccb04..c00af9f88164 100644
--- a/apps/web/src/components/settings/ConnectionsSettings.tsx
+++ b/apps/web/src/components/settings/ConnectionsSettings.tsx
@@ -771,11 +771,11 @@ const PairingLinkListRow = memo(function PairingLinkListRow({
             <AccessScopeSummary scopes={pairingLink.scopes} label="Pairing link scopes" />
           </p>
           {!credential ? (
-            <p className="text-[11px] text-muted-foreground/70">
+            <p className="text-2xs text-muted-foreground/70">
               Create a new link to share from this client.
             </p>
           ) : shareablePairingUrl === null ? (
-            <p className="text-[11px] text-muted-foreground/70">
+            <p className="text-2xs text-muted-foreground/70">
               Copy the token and pair from another client using this backend&apos;s reachable host.
             </p>
           ) : null}
@@ -882,7 +882,7 @@ const PairingLinkListRow = memo(function PairingLinkListRow({
                 role="radiogroup"
                 aria-label="Endpoint the pairing QR code and URL use"
               >
-                <p className="text-[11px] text-muted-foreground/70">Reach this machine via</p>
+                <p className="text-2xs text-muted-foreground/70">Reach this machine via</p>
                 {endpointCopyOptions.map((option) => {
                   const isSelected = option.id === selectedQrOption?.id;
                   return (
@@ -907,7 +907,7 @@ const PairingLinkListRow = memo(function PairingLinkListRow({
                       >
                         {option.label}
                       </span>
-                      <span className="min-w-0 truncate text-[11px] text-muted-foreground/70">
+                      <span className="min-w-0 truncate text-2xs text-muted-foreground/70">
                         {option.detail}
                       </span>
                     </button>
@@ -919,7 +919,7 @@ const PairingLinkListRow = memo(function PairingLinkListRow({
               <Tooltip>
                 <TooltipTrigger
                   render={
-                    <code className="min-w-0 flex-1 truncate font-mono text-[11px] text-muted-foreground">
+                    <code className="min-w-0 flex-1 truncate font-mono text-2xs text-muted-foreground">
                       {qrPairingUrl}
                     </code>
                   }
@@ -951,7 +951,7 @@ const PairingLinkListRow = memo(function PairingLinkListRow({
             </div>
           ) : (
             <div className="flex size-[192px] shrink-0 items-center justify-center self-center rounded-xl border border-border/50 p-4 sm:self-start">
-              <p className="text-center text-[11px] text-muted-foreground/70">
+              <p className="text-center text-2xs text-muted-foreground/70">
                 No QR for this endpoint. Another device scanning a loopback link would dial itself;
                 copy the URL for use on this machine instead.
               </p>
@@ -1011,7 +1011,7 @@ const ConnectedClientListRow = memo(function ConnectedClientListRow({
             />
             <h3 className="text-sm font-medium text-foreground">{primaryLabel}</h3>
             {clientSession.current ? (
-              <span className="text-[10px] text-muted-foreground/80 rounded-md border border-border/50 bg-muted/50 px-1 py-0.5">
+              <span className="text-3xs text-muted-foreground/80 rounded-md border border-border/50 bg-muted/50 px-1 py-0.5">
                 This device
               </span>
             ) : null}
@@ -1335,14 +1335,14 @@ const AdvertisedEndpointListRow = memo(function AdvertisedEndpointListRow({
             </Tooltip>
           ) : null}
           {!isAvailable ? (
-            <span className="shrink-0 rounded-md border border-border/70 px-1 py-0.5 text-[10px] text-muted-foreground">
+            <span className="shrink-0 rounded-md border border-border/70 px-1 py-0.5 text-3xs text-muted-foreground">
               Setup required
             </span>
           ) : null}
         </div>
         <div className="ml-auto flex min-h-6 shrink-0 items-center justify-end gap-2">
           {isDefault ? (
-            <span className="rounded-md border border-primary/30 bg-primary/10 px-1 py-0.5 text-[10px] text-primary">
+            <span className="rounded-md border border-primary/30 bg-primary/10 px-1 py-0.5 text-3xs text-primary">
               Default
             </span>
           ) : null}
@@ -2660,7 +2660,7 @@ export function ConnectionsSettings() {
         </label>
       </div>
       <div>
-        <span className="mt-1 block text-[11px] text-muted-foreground">
+        <span className="mt-1 block text-2xs text-muted-foreground">
           Paste a full pairing URL here to fill both fields automatically.
         </span>
       </div>
diff --git a/apps/web/src/components/settings/CustomModelEditor.tsx b/apps/web/src/components/settings/CustomModelEditor.tsx
index d1a32c3fd7bd..48b91748d780 100644
--- a/apps/web/src/components/settings/CustomModelEditor.tsx
+++ b/apps/web/src/components/settings/CustomModelEditor.tsx
@@ -169,7 +169,7 @@ export function CustomModelEditor({
         className="min-w-0 flex-1"
         aria-label="Choice label"
       />
-      <label className="flex shrink-0 items-center gap-1.5 text-[11px] text-muted-foreground">
+      <label className="flex shrink-0 items-center gap-1.5 text-2xs text-muted-foreground">
         <Switch
           size="sm"
           checked={choice.isDefault}
@@ -201,7 +201,7 @@ export function CustomModelEditor({
       className="flex flex-col gap-2 rounded-md border border-border/60 bg-background/40 p-2.5"
     >
       <div className="flex flex-wrap items-center gap-2">
-        <span className="w-14 shrink-0 text-[11px] text-muted-foreground">Option {index + 1}</span>
+        <span className="w-14 shrink-0 text-2xs text-muted-foreground">Option {index + 1}</span>
         {presets.length > 0 ? (
           <Select
             value={idSelectValue(descriptor)}
diff --git a/apps/web/src/components/settings/DiagnosticsSettings.tsx b/apps/web/src/components/settings/DiagnosticsSettings.tsx
index 17555540145a..de8cdcee4c76 100644
--- a/apps/web/src/components/settings/DiagnosticsSettings.tsx
+++ b/apps/web/src/components/settings/DiagnosticsSettings.tsx
@@ -94,7 +94,7 @@ function StatBlock({
 }) {
   return (
     <div className="min-w-0 border-border/60 px-4 py-3 sm:px-5">
-      <div className="flex min-w-0 items-center gap-1.5 text-[11px] font-medium uppercase tracking-[0.08em] text-muted-foreground/70">
+      <div className="flex min-w-0 items-center gap-1.5 text-2xs font-medium uppercase tracking-widest text-muted-foreground/70">
         <span className="min-w-0 truncate">{label}</span>
         {tooltip ? (
           <Tooltip>
@@ -183,7 +183,7 @@ function DiagnosticsTable({
             ))}
           </colgroup>
         ) : null}
-        <thead className="border-b border-border/60 text-[11px] uppercase tracking-[0.08em] text-muted-foreground/70">
+        <thead className="border-b border-border/60 text-2xs uppercase tracking-widest text-muted-foreground/70">
           <tr>
             {headers.map((header, index) => (
               <th
@@ -215,7 +215,7 @@ function TraceIdCell({ traceId }: { traceId: string }) {
       <Tooltip>
         <TooltipTrigger
           render={
-            <span className="min-w-0 flex-1 truncate font-mono text-[11px]">
+            <span className="min-w-0 flex-1 truncate font-mono text-2xs">
               {shortenTraceId(traceId)}
             </span>
           }
@@ -362,7 +362,7 @@ function ProcessDiagnosticsTable({
             <col className="w-[11%]" />
             <col className="w-[6%]" />
           </colgroup>
-          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-[11px] uppercase tracking-[0.08em] text-muted-foreground/70">
+          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-2xs uppercase tracking-widest text-muted-foreground/70">
             <tr>
               <th className="px-4 py-2 font-semibold sm:pl-5">Name</th>
               <th className="px-3 py-2 text-right font-semibold">CPU</th>
@@ -588,7 +588,7 @@ function ProcessResourceHistoryTable({
             <col className="w-[16%]" />
             <col className="w-[10%]" />
           </colgroup>
-          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-[11px] uppercase tracking-[0.08em] text-muted-foreground/70">
+          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-2xs uppercase tracking-widest text-muted-foreground/70">
             <tr>
               <th className="px-4 py-2 font-semibold sm:pl-5">Process</th>
               <th className="px-3 py-2 text-right font-semibold">CPU Time</th>
@@ -662,15 +662,15 @@ function DiagnosticsLastChecked({ checkedAt }: { checkedAt: DateTime.Utc | null
   const relative = getRelativeTimeState(checkedAt ? DateTime.formatIso(checkedAt) : null);
 
   if (relative.status === "missing") {
-    return <span className="text-[11px] text-muted-foreground/50">Checking</span>;
+    return <span className="text-2xs text-muted-foreground/50">Checking</span>;
   }
 
   if (relative.status === "invalid") {
-    return <span className="text-[11px] text-muted-foreground/50">Checked unavailable</span>;
+    return <span className="text-2xs text-muted-foreground/50">Checked unavailable</span>;
   }
 
   return (
-    <span className="text-[11px] text-muted-foreground/60">
+    <span className="text-2xs text-muted-foreground/60">
       {relative.suffix ? (
         <>
           Checked <span className="font-mono tabular-nums">{relative.value}</span> {relative.suffix}
@@ -1222,7 +1222,7 @@ export function DiagnosticsSettingsPanel() {
                 <col className="w-[26%]" />
                 <col className="w-[30%]" />
               </colgroup>
-              <thead className="border-b border-border/60 text-[11px] uppercase tracking-[0.08em] text-muted-foreground/70">
+              <thead className="border-b border-border/60 text-2xs uppercase tracking-widest text-muted-foreground/70">
                 <tr>
                   <th className="whitespace-nowrap px-4 py-2.5 font-semibold sm:pl-5">Time</th>
                   <th className="whitespace-nowrap px-4 py-2.5 font-semibold">Level</th>
@@ -1241,7 +1241,7 @@ export function DiagnosticsSettingsPanel() {
                       {formatRelativeNoWrap(event.seenAt)}
                     </td>
                     <td className="px-4 py-3 align-top">
-                      <span className="inline-flex rounded bg-muted px-1.5 py-0.5 font-mono text-[11px] font-medium uppercase text-foreground/80">
+                      <span className="inline-flex rounded bg-muted px-1.5 py-0.5 font-mono text-2xs font-medium uppercase text-foreground/80">
                         {event.level}
                       </span>
                     </td>
diff --git a/apps/web/src/components/settings/FontFamilyPicker.tsx b/apps/web/src/components/settings/FontFamilyPicker.tsx
index f9084ca027a6..b7e43eef8209 100644
--- a/apps/web/src/components/settings/FontFamilyPicker.tsx
+++ b/apps/web/src/components/settings/FontFamilyPicker.tsx
@@ -173,9 +173,7 @@ export function FontFamilyPicker({
             {family}
           </span>
           <span className="flex shrink-0 items-center gap-1.5">
-            {isDefault ? (
-              <span className="text-[10px] text-muted-foreground/60">default</span>
-            ) : null}
+            {isDefault ? <span className="text-3xs text-muted-foreground/60">default</span> : null}
             {item === selectedValue ? (
               <CheckIcon className="size-3.5 text-muted-foreground" />
             ) : null}
diff --git a/apps/web/src/components/settings/KeybindingsSettings.tsx b/apps/web/src/components/settings/KeybindingsSettings.tsx
index 3512a6a25a6c..9d768d7fd41c 100644
--- a/apps/web/src/components/settings/KeybindingsSettings.tsx
+++ b/apps/web/src/components/settings/KeybindingsSettings.tsx
@@ -255,7 +255,7 @@ function WarningTooltipIcon({
             tabIndex={focusable ? 0 : undefined}
             aria-label={label}
             className={cn(
-              "inline-flex size-5 shrink-0 items-center justify-center rounded-sm text-warning outline-none transition-colors hover:bg-warning/10 focus-visible:ring-[3px] focus-visible:ring-warning/25",
+              "inline-flex size-5 shrink-0 items-center justify-center rounded-sm text-warning outline-none transition-colors hover:bg-warning/10 focus-visible:ring-3 focus-visible:ring-warning/25",
               className,
             )}
           />
@@ -668,7 +668,7 @@ function WhenExpressionBuilder({
           ) : null}
         </InputGroup>
         {parseError ? (
-          <div className="flex items-center gap-1.5 text-[11px] text-destructive">
+          <div className="flex items-center gap-1.5 text-2xs text-destructive">
             <CircleXIcon className="size-3.5" />
             {parseError}
           </div>
@@ -698,7 +698,7 @@ function WhenExpressionBuilder({
           </div>
         )}
         {parseError ? (
-          <div className="pointer-events-none absolute inset-0 flex items-center justify-center rounded-lg border border-destructive/30 bg-background/75 p-4 text-center text-xs text-destructive backdrop-blur-[1px]">
+          <div className="pointer-events-none absolute inset-0 flex items-center justify-center rounded-lg border border-destructive/30 bg-background/75 p-4 text-center text-xs text-destructive backdrop-blur-xs">
             Fix the expression above to continue editing visually.
           </div>
         ) : null}
@@ -842,7 +842,7 @@ function KeybindingKeyControl({
           onClick={() => setDraft({ isRecording: true })}
           aria-label={`Edit shortcut for ${commandLabel(row.command)}: ${formatShortcutLabel(row.binding.shortcut)}`}
           className={cn(
-            "inline-flex h-8 cursor-pointer items-center rounded-md border border-transparent px-1.5 sm:h-7 outline-none transition-colors hover:border-border/70 hover:bg-accent focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/24",
+            "inline-flex h-8 cursor-pointer items-center rounded-md border border-transparent px-1.5 sm:h-7 outline-none transition-colors hover:border-border/70 hover:bg-accent focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/24",
             pillClassName,
           )}
         >
@@ -989,7 +989,7 @@ function KeybindingRowWhen({
 }) {
   return (
     <span className="flex h-6 items-center gap-1.5">
-      <span className="text-[12px] leading-none text-muted-foreground/70">When</span>
+      <span className="text-xs leading-none text-muted-foreground/70">When</span>
       <WhenClauseControl
         label={commandLabel(row.command)}
         expression={editor.whenDraftExpression}
@@ -1234,7 +1234,7 @@ function NewKeybindingSettingsRow(props: NewKeybindingProps) {
       title="New keybinding"
       description={
         <span className="flex h-6 items-center gap-1.5">
-          <span className="text-[12px] leading-none text-muted-foreground/70">When</span>
+          <span className="text-xs leading-none text-muted-foreground/70">When</span>
           <NewKeybindingWhen draft={draft} variables={variables} />
         </span>
       }
@@ -1312,7 +1312,7 @@ function KeybindingsList(props: KeybindingsListProps) {
 /** Shown in the browser build only; the desktop app receives every shortcut. */
 function BrowserKeybindingNotice() {
   return (
-    <div className="flex items-center gap-2 px-3 py-2.5 text-[12px] leading-[1.45] text-muted-foreground sm:px-4">
+    <div className="flex items-center gap-2 px-3 py-2.5 text-xs leading-normal text-muted-foreground sm:px-4">
       <TriangleAlertIcon className="size-3.5 shrink-0 text-warning" aria-hidden />
       <span>
         Some shortcuts may be claimed by the browser before T3 Code sees them. Use the desktop app
@@ -1488,7 +1488,7 @@ export function KeybindingsSettingsPanel() {
   const cancelAdd = useCallback(() => setIsAddingBinding(false), []);
 
   const bindingsCount = (
-    <span className="text-[11px] text-muted-foreground">
+    <span className="text-2xs text-muted-foreground">
       {rows.length + (isAddingBinding ? 1 : 0)}{" "}
       {rows.length + (isAddingBinding ? 1 : 0) === 1 ? "binding" : "bindings"}
     </span>
diff --git a/apps/web/src/components/settings/OpenSourceLicenses.tsx b/apps/web/src/components/settings/OpenSourceLicenses.tsx
index dc4703cad51a..02a87caf7ac7 100644
--- a/apps/web/src/components/settings/OpenSourceLicenses.tsx
+++ b/apps/web/src/components/settings/OpenSourceLicenses.tsx
@@ -179,7 +179,7 @@ function LicenseManifestError({ message, onRetry }: { message: string; onRetry:
     <div className="flex flex-col items-start gap-3 px-3 py-5 sm:px-4">
       <div className="flex flex-col gap-1">
         <h3 className="text-sm font-medium text-foreground">Open-source notices are unavailable</h3>
-        <p className="max-w-[70ch] text-pretty text-[13px] leading-[1.45] text-muted-foreground/80">
+        <p className="max-w-[70ch] text-pretty text-xs leading-normal text-muted-foreground/80">
           {message}
         </p>
       </div>
diff --git a/apps/web/src/components/settings/PanelAnimationsPreview.tsx b/apps/web/src/components/settings/PanelAnimationsPreview.tsx
index a56504479c4d..34178f9b54c7 100644
--- a/apps/web/src/components/settings/PanelAnimationsPreview.tsx
+++ b/apps/web/src/components/settings/PanelAnimationsPreview.tsx
@@ -5,7 +5,7 @@ import { cn } from "~/lib/utils";
 export function PanelAnimationsPreview({ durationMs }: { durationMs: number }) {
   const [panelsOpen, setPanelsOpen] = useState(true);
   const transitionClass =
-    "transition-[width,height,border-width] [transition-duration:var(--preview-duration)] ease-out motion-reduce:transition-none";
+    "transition-[width,height,border-width] duration-(--preview-duration) ease-out motion-reduce:transition-none";
 
   return (
     <button
diff --git a/apps/web/src/components/settings/ProjectActionsList.tsx b/apps/web/src/components/settings/ProjectActionsList.tsx
index e17c8a8226d8..e28cafc4e787 100644
--- a/apps/web/src/components/settings/ProjectActionsList.tsx
+++ b/apps/web/src/components/settings/ProjectActionsList.tsx
@@ -34,12 +34,12 @@ export function ProjectActionsList({
             <ScriptIcon icon={script.icon} className="size-4 shrink-0 text-muted-foreground" />
             <span className="min-w-0 truncate">{script.name}</span>
             {script.runOnWorktreeCreate ? (
-              <span className="shrink-0 rounded-sm border border-border/60 px-1.5 py-px text-[11px] font-normal text-muted-foreground">
+              <span className="shrink-0 rounded-sm border border-border/60 px-1.5 py-px text-2xs font-normal text-muted-foreground">
                 setup
               </span>
             ) : null}
             {script.previewUrl ? (
-              <span className="shrink-0 rounded-sm border border-border/60 px-1.5 py-px text-[11px] font-normal text-muted-foreground max-sm:hidden">
+              <span className="shrink-0 rounded-sm border border-border/60 px-1.5 py-px text-2xs font-normal text-muted-foreground max-sm:hidden">
                 preview · desktop only
               </span>
             ) : null}
diff --git a/apps/web/src/components/settings/ProviderInstanceCard.test.ts b/apps/web/src/components/settings/ProviderInstanceCard.test.ts
index a5085774f0c6..6bcc7fe5d8ce 100644
--- a/apps/web/src/components/settings/ProviderInstanceCard.test.ts
+++ b/apps/web/src/components/settings/ProviderInstanceCard.test.ts
@@ -118,7 +118,7 @@ describe("deriveProviderModelsForDisplay", () => {
 
     expect(markup).toContain("Authenticated as");
     expect(markup).toContain('aria-label="Toggle account email visibility"');
-    expect(markup).toContain("blur-[2px]");
+    expect(markup).toContain("blur-xs");
     expect(markup).not.toContain("developer@example.com");
   });
   it("surfaces a failed probe message in both the list row and the editor", () => {
diff --git a/apps/web/src/components/settings/ProviderInstanceCard.tsx b/apps/web/src/components/settings/ProviderInstanceCard.tsx
index f8afb6ead328..4e2405c138b1 100644
--- a/apps/web/src/components/settings/ProviderInstanceCard.tsx
+++ b/apps/web/src/components/settings/ProviderInstanceCard.tsx
@@ -570,7 +570,7 @@ export function ProviderInstanceCard({
       showBadge={Boolean(accentColor)}
       className="size-5"
       iconClassName="size-4 text-foreground/80"
-      badgeClassName="right-[-0.125rem] bottom-[-0.125rem] h-3 min-w-3 px-0.5 text-[7px]"
+      badgeClassName="right-[-0.125rem] bottom-[-0.125rem] h-3 min-w-3 px-0.5 text-3xs"
     />
   ) : FallbackIconComponent ? (
     <span className="inline-flex size-5 shrink-0 items-center justify-center">
@@ -578,7 +578,7 @@ export function ProviderInstanceCard({
     </span>
   ) : (
     <span
-      className="inline-flex size-5 shrink-0 items-center justify-center text-[10px] font-semibold leading-none text-foreground/80"
+      className="inline-flex size-5 shrink-0 items-center justify-center text-3xs font-semibold leading-none text-foreground/80"
       aria-hidden
     >
       {providerInstanceInitials(displayName)}
@@ -655,7 +655,7 @@ export function ProviderInstanceCard({
             <span className="flex min-w-0 items-center gap-2">
               <span className="truncate text-sm font-medium text-foreground">{displayName}</span>
               {String(instanceId) !== String(instance.driver) ? (
-                <code className="min-w-0 truncate rounded bg-muted/60 px-1 py-0.5 text-[10px] text-muted-foreground">
+                <code className="min-w-0 truncate rounded bg-muted/60 px-1 py-0.5 text-3xs text-muted-foreground">
                   {instanceId}
                 </code>
               ) : null}
@@ -708,7 +708,7 @@ export function ProviderInstanceCard({
                 )
               ) : null}
             </span>
-            <span className="mt-0.5 flex items-start gap-1.5 text-[13px] leading-[1.45] text-muted-foreground/80">
+            <span className="mt-0.5 flex items-start gap-1.5 text-xs leading-normal text-muted-foreground/80">
               {statusDotNode ? (
                 <span className="flex h-[1.45em] shrink-0 items-center">{statusDotNode}</span>
               ) : null}
@@ -775,7 +775,7 @@ export function ProviderInstanceCard({
             <PopoverPopup side="bottom" align="end" width="md">
               <div className="grid min-w-0 gap-3">
                 <div className="grid gap-0.5">
-                  <p className="text-[13px] font-semibold leading-tight text-foreground">
+                  <p className="text-sm font-semibold leading-tight text-foreground">
                     {versionAdvisory.title}
                   </p>
                   <p
@@ -807,7 +807,7 @@ export function ProviderInstanceCard({
                   </Button>
                 ) : null}
                 {onRunVersionAction && updateCommand ? (
-                  <div className="flex items-center gap-2 text-[10px] font-medium uppercase tracking-wider text-muted-foreground">
+                  <div className="flex items-center gap-2 text-3xs font-medium uppercase tracking-wider text-muted-foreground">
                     <span aria-hidden className="h-px flex-1 bg-border" />
                     or, update manually using
                     <span aria-hidden className="h-px flex-1 bg-border" />
@@ -815,7 +815,7 @@ export function ProviderInstanceCard({
                 ) : null}
                 {updateCommand ? (
                   <div className="flex min-w-0 items-center gap-1 rounded-md border border-border/70 bg-muted/40 py-0.5 pr-0.5 pl-2">
-                    <code className="min-w-0 flex-1 truncate font-mono text-[11px] text-foreground">
+                    <code className="min-w-0 flex-1 truncate font-mono text-2xs text-foreground">
                       {updateCommand}
                     </code>
                     <Tooltip>
diff --git a/apps/web/src/components/settings/ProviderModelsSection.tsx b/apps/web/src/components/settings/ProviderModelsSection.tsx
index 115baa26d05d..f4b1bfd7439b 100644
--- a/apps/web/src/components/settings/ProviderModelsSection.tsx
+++ b/apps/web/src/components/settings/ProviderModelsSection.tsx
@@ -470,19 +470,19 @@ export function ProviderModelsSection({
         <span className="flex min-w-0 items-baseline gap-2">
           <span className={cn(nameClassName, "truncate")}>{model.name}</span>
           {model.name !== model.slug ? (
-            <code className="truncate font-mono text-[11px] text-muted-foreground/70">
+            <code className="truncate font-mono text-2xs text-muted-foreground/70">
               {model.slug}
             </code>
           ) : null}
           {model.isCustom ? (
-            <span className="text-[11px] text-muted-foreground/70">custom</span>
+            <span className="text-2xs text-muted-foreground/70">custom</span>
           ) : null}
         </span>
         {/*
           Always a grid item so the columns line up across rows; the text
           itself drops out on phone widths where it would starve the name.
         */}
-        <span className="text-[11px] text-muted-foreground/70">
+        <span className="text-2xs text-muted-foreground/70">
           {capLabels.length > 0 ? (
             <span className="hidden sm:inline">{capLabels.join(" · ")}</span>
           ) : null}
@@ -494,7 +494,7 @@ export function ProviderModelsSection({
   };
 
   const groupLabel = (label: string, isFirst: boolean) => (
-    <div className={cn("px-2 pb-1.5 text-[11px] text-muted-foreground", isFirst ? "pt-1" : "pt-5")}>
+    <div className={cn("px-2 pb-1.5 text-2xs text-muted-foreground", isFirst ? "pt-1" : "pt-5")}>
       {label}
     </div>
   );
diff --git a/apps/web/src/components/settings/ProviderSettingsForm.tsx b/apps/web/src/components/settings/ProviderSettingsForm.tsx
index d49c05c9660f..94372b97c868 100644
--- a/apps/web/src/components/settings/ProviderSettingsForm.tsx
+++ b/apps/web/src/components/settings/ProviderSettingsForm.tsx
@@ -240,7 +240,7 @@ function ProviderSettingsFieldRow({
   const inputId = `${idPrefix}-${field.key}`;
   const descriptionClassName =
     variant === "dialog"
-      ? "text-[11px] text-muted-foreground"
+      ? "text-2xs text-muted-foreground"
       : "mt-1 block text-xs text-muted-foreground";
   const label = <span className="text-xs font-medium text-foreground">{field.label}</span>;
   const description = field.description ? (
diff --git a/apps/web/src/components/settings/RedactedSensitiveText.tsx b/apps/web/src/components/settings/RedactedSensitiveText.tsx
index a61d7c53a6fc..4ae2276b8e63 100644
--- a/apps/web/src/components/settings/RedactedSensitiveText.tsx
+++ b/apps/web/src/components/settings/RedactedSensitiveText.tsx
@@ -44,8 +44,8 @@ export function RedactedSensitiveText(props: {
           <button
             type="button"
             className={cn(
-              "min-w-0 cursor-pointer rounded-sm font-mono text-[11px] leading-normal transition hover:text-foreground",
-              revealed ? "text-muted-foreground" : "select-none text-muted-foreground blur-[2px]",
+              "min-w-0 cursor-pointer rounded-sm font-mono text-2xs leading-normal transition hover:text-foreground",
+              revealed ? "text-muted-foreground" : "select-none text-muted-foreground blur-xs",
               props.className,
             )}
             onClick={() => setRevealed((current) => !current)}
diff --git a/apps/web/src/components/settings/ResourceTelemetryDiagnostics.tsx b/apps/web/src/components/settings/ResourceTelemetryDiagnostics.tsx
index 2fabb2417890..7f0a5f497bc9 100644
--- a/apps/web/src/components/settings/ResourceTelemetryDiagnostics.tsx
+++ b/apps/web/src/components/settings/ResourceTelemetryDiagnostics.tsx
@@ -194,7 +194,7 @@ function SourceStatusBadge({
   return (
     <span
       className={cn(
-        "inline-flex items-center gap-1.5 rounded-full border px-2.5 py-1 text-[10px] font-semibold uppercase tracking-[0.08em]",
+        "inline-flex items-center gap-1.5 rounded-full border px-2.5 py-1 text-3xs font-semibold uppercase tracking-widest",
         tone === "neutral" && "border-border/70 bg-muted/45 text-muted-foreground",
         tone === "default" && "border-success/25 bg-success/10 text-success-foreground",
         tone === "warning" && "border-warning/30 bg-warning/10 text-warning-foreground",
@@ -218,14 +218,14 @@ function SourceStatusBadge({
 function LastSampleLabel({ sampledAt }: { sampledAt: DateTime.Utc | null }) {
   useRelativeTimeTick();
   if (!sampledAt) {
-    return <span className="text-[11px] text-muted-foreground/55">Waiting for sample</span>;
+    return <span className="text-2xs text-muted-foreground/55">Waiting for sample</span>;
   }
   const relative = formatRelativeTime(DateTime.formatIso(sampledAt));
   if (!relative) {
-    return <span className="text-[11px] text-muted-foreground/55">Waiting for sample</span>;
+    return <span className="text-2xs text-muted-foreground/55">Waiting for sample</span>;
   }
   return (
-    <span className="text-[11px] text-muted-foreground/60">
+    <span className="text-2xs text-muted-foreground/60">
       Updated <span className="font-mono tabular-nums">{relative.value}</span>
       {relative.suffix ? ` ${relative.suffix}` : ""}
     </span>
@@ -247,7 +247,7 @@ function IconStat({
 }) {
   return (
     <div className="group min-w-0 px-4 py-4 sm:px-5">
-      <div className="flex items-center gap-2 text-[10px] font-semibold uppercase tracking-[0.11em] text-muted-foreground/70">
+      <div className="flex items-center gap-2 text-3xs font-semibold uppercase tracking-widest text-muted-foreground/70">
         <span className="text-muted-foreground/55 transition-colors group-hover:text-foreground/65">
           {icon}
         </span>
@@ -255,7 +255,7 @@ function IconStat({
       </div>
       <div
         className={cn(
-          "mt-2.5 truncate font-mono text-2xl font-semibold tracking-[-0.05em] tabular-nums text-foreground",
+          "mt-2.5 truncate font-mono text-2xl font-semibold tracking-tighter tabular-nums text-foreground",
           tone === "warning" && "text-warning-foreground",
           tone === "danger" && "text-destructive",
         )}
@@ -263,7 +263,7 @@ function IconStat({
         {value}
       </div>
       {detail ? (
-        <div className="mt-1.5 truncate text-[10px] text-muted-foreground/60">{detail}</div>
+        <div className="mt-1.5 truncate text-3xs text-muted-foreground/60">{detail}</div>
       ) : null}
     </div>
   );
@@ -282,10 +282,10 @@ function AggregateCard({
     <div className="relative overflow-hidden border-t border-border/60 px-4 py-4 first:border-t-0 md:border-t-0 md:border-l md:first:border-l-0 sm:px-5">
       <span className={cn("absolute inset-x-5 top-0 h-0.5 rounded-full opacity-75", accentClass)} />
       <div className="flex items-center justify-between gap-3">
-        <div className="text-[10px] font-semibold uppercase tracking-[0.11em] text-muted-foreground/75">
+        <div className="text-3xs font-semibold uppercase tracking-widest text-muted-foreground/75">
           {label}
         </div>
-        <div className="rounded-md bg-muted/55 px-1.5 py-0.5 font-mono text-[9px] tabular-nums text-muted-foreground/70">
+        <div className="rounded-md bg-muted/55 px-1.5 py-0.5 font-mono text-3xs tabular-nums text-muted-foreground/70">
           {aggregate.processCount} {aggregate.processCount === 1 ? "process" : "processes"}
         </div>
       </div>
@@ -302,7 +302,7 @@ function AggregateCard({
 function MetricPair({ label, value }: { label: string; value: string }) {
   return (
     <div className="min-w-0">
-      <div className="text-[9px] font-semibold uppercase tracking-[0.08em] text-muted-foreground/45">
+      <div className="text-3xs font-semibold uppercase tracking-widest text-muted-foreground/45">
         {label}
       </div>
       <div className="truncate font-mono text-xs font-medium tabular-nums text-foreground/90">
@@ -319,8 +319,8 @@ function HealthSource({ label, health }: { label: string; health: ResourceTeleme
   return (
     <div className="flex items-start justify-between gap-4 border-t border-border/50 py-3 first:border-t-0">
       <div className="min-w-0">
-        <div className="text-[13px] font-medium text-foreground">{label}</div>
-        <div className="mt-1 text-[11px] leading-relaxed text-muted-foreground/65">
+        <div className="text-sm font-medium text-foreground">{label}</div>
+        <div className="mt-1 text-2xs leading-relaxed text-muted-foreground/65">
           {expectedInBrowser
             ? "Available when this page runs inside the desktop app."
             : Option.match(health.lastError, {
@@ -356,10 +356,10 @@ function DetailRow({
 }) {
   return (
     <div className="flex items-center justify-between gap-4 border-t border-border/50 py-2.5 first:border-t-0">
-      <span className="text-[11px] text-muted-foreground/75">{label}</span>
+      <span className="text-2xs text-muted-foreground/75">{label}</span>
       <span
         className={cn(
-          "min-w-0 truncate text-right font-mono text-[11px] tabular-nums text-foreground/85",
+          "min-w-0 truncate text-right font-mono text-2xs tabular-nums text-foreground/85",
           valueClassName,
         )}
       >
@@ -405,7 +405,7 @@ function ResourceHistoryChart({
 
   return (
     <div className="border-t border-border/60 px-4 py-4 sm:px-5">
-      <div className="mb-3 flex flex-wrap items-center gap-x-4 gap-y-1 text-[10px] text-muted-foreground/65">
+      <div className="mb-3 flex flex-wrap items-center gap-x-4 gap-y-1 text-3xs text-muted-foreground/65">
         <span className="inline-flex items-center gap-1.5">
           <span className="h-1.5 w-3 rounded-full bg-foreground/70" /> CPU average
         </span>
@@ -529,7 +529,7 @@ function ProcessActions({
   onSignal: (process: ResourceTelemetryProcess, signal: ServerProcessSignal) => void;
 }) {
   if (!canSignalProcess(process)) {
-    return <span className="text-[10px] text-muted-foreground/35">—</span>;
+    return <span className="text-3xs text-muted-foreground/35">—</span>;
   }
   const isSignaling = signalingKeys.has(processIdentityKey(process));
   return (
@@ -586,7 +586,7 @@ function ProcessTable({
             <col className="w-[6%]" />
             <col className="w-[4%]" />
           </colgroup>
-          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-[10px] uppercase tracking-[0.08em] text-muted-foreground/65">
+          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-3xs uppercase tracking-widest text-muted-foreground/65">
             <tr>
               <th className="px-4 py-2 font-semibold sm:pl-5">Process</th>
               <th className="px-3 py-2 font-semibold">Category</th>
@@ -618,7 +618,7 @@ function ProcessTable({
                     onToggle={toggle}
                   />
                 </td>
-                <td className="truncate px-3 py-2 text-[11px] text-muted-foreground">
+                <td className="truncate px-3 py-2 text-2xs text-muted-foreground">
                   {categoryLabel(process.category)}
                 </td>
                 <td className="px-3 py-2 text-right font-mono tabular-nums">
@@ -689,7 +689,7 @@ function HistoryProcessTable({
             <col className="w-[7%]" />
             <col className="w-[5%]" />
           </colgroup>
-          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-[10px] uppercase tracking-[0.08em] text-muted-foreground/65">
+          <thead className="sticky top-0 z-10 border-b border-border/60 bg-card text-3xs uppercase tracking-widest text-muted-foreground/65">
             <tr>
               <th className="px-4 py-2 font-semibold sm:pl-5">Process</th>
               <th className="px-3 py-2 font-semibold">Category</th>
@@ -726,7 +726,7 @@ function HistoryProcessTable({
                     </TooltipPopup>
                   </Tooltip>
                 </td>
-                <td className="truncate px-3 py-2 text-[11px] text-muted-foreground">
+                <td className="truncate px-3 py-2 text-2xs text-muted-foreground">
                   {categoryLabel(process.category)}
                 </td>
                 <td className="px-3 py-2 text-right font-mono tabular-nums">
@@ -771,7 +771,7 @@ function AttributionTable({ entries }: { entries: ReadonlyArray<ResourceAttribut
           <col className="w-[10%]" />
           <col className="w-[12%]" />
         </colgroup>
-        <thead className="border-b border-border/60 text-[10px] uppercase tracking-[0.08em] text-muted-foreground/65">
+        <thead className="border-b border-border/60 text-3xs uppercase tracking-widest text-muted-foreground/65">
           <tr>
             <th className="px-4 py-2 font-semibold sm:pl-5">Component</th>
             <th className="px-3 py-2 font-semibold">Operation</th>
@@ -983,10 +983,10 @@ export function ResourceTelemetryDiagnostics({
           </div>
         }
       >
-        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-[0_1px_1px_rgb(0_0_0/0.03),0_8px_30px_rgb(0_0_0/0.035)]">
+        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-sm/5">
           <div className="flex flex-col gap-3 border-b border-border/60 bg-linear-to-r from-muted/45 via-muted/20 to-transparent px-4 py-4 sm:flex-row sm:items-center sm:justify-between sm:px-5">
             <div>
-              <div className="text-[10px] font-semibold uppercase tracking-[0.14em] text-muted-foreground/70">
+              <div className="text-3xs font-semibold uppercase tracking-widest text-muted-foreground/70">
                 T3 system footprint
               </div>
               <p className="mt-1 max-w-xl text-xs leading-relaxed text-muted-foreground">
@@ -994,7 +994,7 @@ export function ResourceTelemetryDiagnostics({
                 the monitor itself.
               </p>
             </div>
-            <div className="flex items-center gap-2 text-[10px] text-muted-foreground/65">
+            <div className="flex items-center gap-2 text-3xs text-muted-foreground/65">
               <span className="size-1.5 rounded-full bg-success" />
               Sampling every {snapshot ? formatSampleInterval(snapshot.sampleIntervalMs) : "..."}
             </div>
@@ -1091,9 +1091,9 @@ export function ResourceTelemetryDiagnostics({
           ) : null
         }
       >
-        <div className="grid overflow-hidden rounded-2xl border border-border/70 bg-card shadow-[0_1px_1px_rgb(0_0_0/0.03)] md:grid-cols-2 md:divide-x md:divide-border/60">
+        <div className="grid overflow-hidden rounded-2xl border border-border/70 bg-card shadow-xs/5 md:grid-cols-2 md:divide-x md:divide-border/60">
           <div className="px-4 py-4 sm:px-5">
-            <div className="mb-3 flex items-center gap-2 text-[10px] font-semibold uppercase tracking-[0.12em] text-muted-foreground/70">
+            <div className="mb-3 flex items-center gap-2 text-3xs font-semibold uppercase tracking-widest text-muted-foreground/70">
               <span className="flex size-6 items-center justify-center rounded-md bg-muted/60">
                 <BatteryIcon className="size-3.5" />
               </span>
@@ -1150,10 +1150,10 @@ export function ResourceTelemetryDiagnostics({
               </>
             ) : (
               <div className="rounded-xl border border-dashed border-border/70 bg-muted/20 px-4 py-5">
-                <div className="text-[13px] font-medium text-foreground">
+                <div className="text-sm font-medium text-foreground">
                   Desktop host signals not connected
                 </div>
-                <p className="mt-1.5 max-w-sm text-[11px] leading-relaxed text-muted-foreground/70">
+                <p className="mt-1.5 max-w-sm text-2xs leading-relaxed text-muted-foreground/70">
                   Power, idle, lock, and thermal state are supplied by the desktop host. Process
                   telemetry remains fully active in this browser session.
                 </p>
@@ -1161,7 +1161,7 @@ export function ResourceTelemetryDiagnostics({
             )}
           </div>
           <div className="border-t border-border/60 px-4 py-4 md:border-t-0 sm:px-5">
-            <div className="mb-3 flex items-center gap-2 text-[10px] font-semibold uppercase tracking-[0.12em] text-muted-foreground/70">
+            <div className="mb-3 flex items-center gap-2 text-3xs font-semibold uppercase tracking-widest text-muted-foreground/70">
               <span className="flex size-6 items-center justify-center rounded-md bg-muted/60">
                 <GaugeIcon className="size-3.5" />
               </span>
@@ -1228,7 +1228,7 @@ export function ResourceTelemetryDiagnostics({
           </div>
         }
       >
-        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-[0_1px_1px_rgb(0_0_0/0.03)]">
+        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-xs/5">
           {history.error ? (
             <div className="flex items-start gap-2 border-b border-destructive/20 bg-destructive/5 px-4 py-3 text-xs text-destructive sm:px-5">
               <AlertTriangleIcon className="mt-0.5 size-3.5 shrink-0" />
@@ -1245,13 +1245,13 @@ export function ResourceTelemetryDiagnostics({
         icon={<CpuIcon className="size-4 text-muted-foreground" />}
         headerAction={
           snapshot ? (
-            <span className="text-[10px] text-muted-foreground/55">
+            <span className="text-3xs text-muted-foreground/55">
               Identity: <span className="font-mono">PID + start time</span>
             </span>
           ) : null
         }
       >
-        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-[0_1px_1px_rgb(0_0_0/0.03)]">
+        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-xs/5">
           <ProcessTable
             processes={snapshot?.processes ?? []}
             signalingKeys={signalingKeys}
@@ -1264,11 +1264,11 @@ export function ResourceTelemetryDiagnostics({
         title="Instrumented application I/O"
         icon={<DatabaseIcon className="size-4 text-muted-foreground" />}
         headerAction={
-          <span className="text-[10px] text-muted-foreground/55">Logical bytes by operation</span>
+          <span className="text-3xs text-muted-foreground/55">Logical bytes by operation</span>
         }
       >
-        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-[0_1px_1px_rgb(0_0_0/0.03)]">
-          <div className="bg-muted/15 px-4 py-3 text-[11px] leading-relaxed text-muted-foreground sm:px-5">
+        <div className="overflow-hidden rounded-2xl border border-border/70 bg-card shadow-xs/5">
+          <div className="bg-muted/15 px-4 py-3 text-2xs leading-relaxed text-muted-foreground sm:px-5">
             Native counters identify which process is reading or writing. These application-level
             counters identify known T3 operations so process spikes can be correlated with specific
             persistence and logging paths.
diff --git a/apps/web/src/components/settings/SettingsPanels.tsx b/apps/web/src/components/settings/SettingsPanels.tsx
index bb3ba34cbcd4..f0a9113981b1 100644
--- a/apps/web/src/components/settings/SettingsPanels.tsx
+++ b/apps/web/src/components/settings/SettingsPanels.tsx
@@ -264,7 +264,7 @@ function AboutVersionTitle() {
   return (
     <span className="inline-flex items-baseline gap-2">
       <span>Version</span>
-      <code className="text-[11px] font-medium text-muted-foreground">{APP_VERSION}</code>
+      <code className="text-2xs font-medium text-muted-foreground">{APP_VERSION}</code>
     </span>
   );
 }
@@ -1368,8 +1368,8 @@ export function AppearanceSettingsPanel() {
                         : "flex shrink-0 gap-1"
                     }
                   >
-                    <span className="size-2 rounded-full bg-[var(--diff-deletion)]" />
-                    <span className="size-2 rounded-full bg-[var(--diff-addition)]" />
+                    <span className="size-2 rounded-full bg-diff-deletion" />
+                    <span className="size-2 rounded-full bg-diff-addition" />
                   </span>
                   <SelectValue>
                     {settings.diffColorScheme === "blue-orange" ? "Blue & orange" : "Red & green"}
@@ -2046,7 +2046,7 @@ function LegacyFeaturesSection() {
     <section id="legacy-features" ref={targetRef} tabIndex={-1} className="space-y-2.5">
       <Collapsible open={open} onOpenChange={setOpen}>
         <CollapsibleTrigger className="group flex min-h-8 w-full items-center gap-2 px-3 sm:px-4">
-          <h2 className="text-sm font-normal tracking-[-0.005em] text-foreground/70 transition-colors group-hover:text-foreground">
+          <h2 className="text-sm font-normal text-foreground/70 transition-colors group-hover:text-foreground">
             Legacy features
           </h2>
           <ChevronRightIcon className="size-4 text-muted-foreground transition-transform duration-200 group-data-panel-open:rotate-90" />
diff --git a/apps/web/src/components/settings/SettingsSidebarNav.tsx b/apps/web/src/components/settings/SettingsSidebarNav.tsx
index ec46ab1f13a3..e2ea39c761f2 100644
--- a/apps/web/src/components/settings/SettingsSidebarNav.tsx
+++ b/apps/web/src/components/settings/SettingsSidebarNav.tsx
@@ -311,7 +311,7 @@ export function SettingsSidebarNav({ pathname }: { pathname: string }) {
                         <span className="block truncate text-sm font-medium text-sidebar-foreground">
                           {item.title}
                         </span>
-                        <span className="block truncate text-[11px] text-sidebar-muted-foreground/75">
+                        <span className="block truncate text-2xs text-sidebar-muted-foreground/75">
                           {SETTINGS_SECTION_LABELS[item.to]}
                         </span>
                       </span>
diff --git a/apps/web/src/components/settings/SnapShotSetupDialog.tsx b/apps/web/src/components/settings/SnapShotSetupDialog.tsx
index c5ba97cedd97..c6003adc740f 100644
--- a/apps/web/src/components/settings/SnapShotSetupDialog.tsx
+++ b/apps/web/src/components/settings/SnapShotSetupDialog.tsx
@@ -268,9 +268,7 @@ export function SnapShotSetupDialog({
                     permissions={[
                       {
                         id: "screenRecording",
-                        icon: (
-                          <MacScreenRecordingIcon className="size-8 shrink-0 drop-shadow-[0_1px_1px_#0005]" />
-                        ),
+                        icon: <MacScreenRecordingIcon className="size-8 shrink-0 drop-shadow-sm" />,
                         title: "Screen Recording",
                         description: "Capture the window you're using.",
                         granted: macPermissions.screenRecording,
@@ -278,9 +276,7 @@ export function SnapShotSetupDialog({
                       },
                       {
                         id: "accessibility",
-                        icon: (
-                          <MacAccessibilityIcon className="size-8 shrink-0 drop-shadow-[0_1px_1px_#0005]" />
-                        ),
+                        icon: <MacAccessibilityIcon className="size-8 shrink-0 drop-shadow-sm" />,
                         title: "Accessibility",
                         description: includeAccessibility
                           ? "Include text and controls from the captured app."
diff --git a/apps/web/src/components/settings/SourceControlSettings.tsx b/apps/web/src/components/settings/SourceControlSettings.tsx
index 3c9b440e5c55..10f86084ea20 100644
--- a/apps/web/src/components/settings/SourceControlSettings.tsx
+++ b/apps/web/src/components/settings/SourceControlSettings.tsx
@@ -242,8 +242,8 @@ function itemSummary({
       return (
         <span>
           {item.label} is not authenticated on this server. Sign in or configure credentials using
-          the <code className="rounded bg-muted px-1 py-px text-[11px]">{item.executable}</code>{" "}
-          tool on the server host to enable change request features.
+          the <code className="rounded bg-muted px-1 py-px text-2xs">{item.executable}</code> tool
+          on the server host to enable change request features.
         </span>
       );
     }
@@ -294,9 +294,7 @@ function DiscoveryItemRow({
           <div className="min-w-0 flex-1 space-y-1">
             <div className="flex min-w-0 flex-wrap items-center gap-2">
               <SourceControlItemMark item={item} />
-              <span className="truncate text-sm font-medium tracking-[-0.005em] text-foreground">
-                {item.label}
-              </span>
+              <span className="truncate text-sm font-medium text-foreground">{item.label}</span>
               {version ? <code className="text-xs text-muted-foreground">{version}</code> : null}
               {isVcsNotReady(item) ? (
                 <Badge variant="warning" size="sm">
@@ -309,7 +307,7 @@ function DiscoveryItemRow({
                 </Badge>
               ) : null}
             </div>
-            <p className="flex min-w-0 flex-wrap items-center gap-x-1 text-[13px] leading-[1.45] text-muted-foreground/80">
+            <p className="flex min-w-0 flex-wrap items-center gap-x-1 text-xs leading-normal text-muted-foreground/80">
               {itemSummary({ item, auth, authAccount })}
             </p>
           </div>
diff --git a/apps/web/src/components/settings/ThemeColorPicker.tsx b/apps/web/src/components/settings/ThemeColorPicker.tsx
index 864b2e35e628..30f1752f6cbf 100644
--- a/apps/web/src/components/settings/ThemeColorPicker.tsx
+++ b/apps/web/src/components/settings/ThemeColorPicker.tsx
@@ -171,7 +171,7 @@ function ThemeColorPickerPanel({
       <div className="flex items-center justify-between border-b border-border/70 px-4 py-3">
         <div className="min-w-0">
           <p className="truncate text-xs font-semibold text-foreground">{label}</p>
-          <p className="text-[11px] text-muted-foreground">Choose a color</p>
+          <p className="text-2xs text-muted-foreground">Choose a color</p>
         </div>
         <span
           className="size-7 shrink-0 rounded-full shadow-sm"
@@ -193,7 +193,7 @@ function ThemeColorPickerPanel({
         />
         <div className="grid grid-cols-[1fr_1.2fr] gap-2">
           <label className="grid min-w-0 gap-1">
-            <span className="px-1 text-[10px] font-semibold uppercase tracking-[0.08em] text-muted-foreground">
+            <span className="px-1 text-3xs font-semibold uppercase tracking-widest text-muted-foreground">
               HEX
             </span>
             <span className="flex min-w-0 items-center gap-2 rounded-lg border border-input bg-background px-2 focus-within:border-ring">
@@ -219,7 +219,7 @@ function ThemeColorPickerPanel({
             </span>
           </label>
           <label className="grid min-w-0 gap-1">
-            <span className="px-1 text-[10px] font-semibold uppercase tracking-[0.08em] text-muted-foreground">
+            <span className="px-1 text-3xs font-semibold uppercase tracking-widest text-muted-foreground">
               RGB
             </span>
             <span className="flex min-w-0 items-center rounded-lg border border-input bg-background px-2 focus-within:border-ring">
@@ -323,7 +323,7 @@ export const ThemeColorField = memo(function ThemeColorField({
     <div
       className={cn(
         "flex min-h-11 min-w-0 items-center gap-2 rounded-lg px-2 py-1.5 transition-[background-color,box-shadow]",
-        selected && "bg-accent/60 shadow-[inset_0_0_0_1px_var(--ring)]",
+        selected && "bg-accent/60 inset-ring inset-ring-ring",
       )}
       data-theme-color-role={role}
     >
diff --git a/apps/web/src/components/settings/ThemeImportDialog.tsx b/apps/web/src/components/settings/ThemeImportDialog.tsx
index b17e19feaaec..a4e221327d09 100644
--- a/apps/web/src/components/settings/ThemeImportDialog.tsx
+++ b/apps/web/src/components/settings/ThemeImportDialog.tsx
@@ -111,12 +111,12 @@ function ThemeJsonEditor({
   }, []);
 
   return (
-    <div className="relative overflow-hidden rounded-xl border border-input bg-background shadow-xs/5 focus-within:border-ring focus-within:ring-[3px] focus-within:ring-ring/24">
+    <div className="relative overflow-hidden rounded-xl border border-input bg-background shadow-xs/5 focus-within:border-ring focus-within:ring-3 focus-within:ring-ring/24">
       {isPlainText ? null : (
         <pre
           ref={highlightRef}
           aria-hidden
-          className="pointer-events-none absolute inset-0 m-0 overflow-hidden whitespace-pre-wrap break-words p-3 font-mono text-[12px] leading-5 text-foreground"
+          className="pointer-events-none absolute inset-0 m-0 overflow-hidden whitespace-pre-wrap break-words p-3 font-mono text-xs leading-5 text-foreground"
         >
           <code dangerouslySetInnerHTML={{ __html: highlightedJson }} />
         </pre>
@@ -124,7 +124,7 @@ function ThemeJsonEditor({
       <textarea
         aria-label="Theme JSON"
         className={cn(
-          "relative z-10 block min-h-44 w-full resize-y overflow-auto bg-transparent p-3 font-mono text-[12px] leading-5 caret-foreground outline-none placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground",
+          "relative z-10 block min-h-44 w-full resize-y overflow-auto bg-transparent p-3 font-mono text-xs leading-5 caret-foreground outline-none placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground",
           isPlainText ? "text-foreground" : "text-transparent",
         )}
         id={id}
@@ -438,7 +438,7 @@ export function ThemeImportDialog({
 
           <div className="flex items-center gap-3" aria-hidden>
             <div className="h-px flex-1 bg-border" />
-            <span className="text-muted-foreground text-[11px] uppercase tracking-wider">
+            <span className="text-muted-foreground text-2xs uppercase tracking-wider">
               or import a file
             </span>
             <div className="h-px flex-1 bg-border" />
diff --git a/apps/web/src/components/settings/ThemeSettings.tsx b/apps/web/src/components/settings/ThemeSettings.tsx
index bf3305ba5a17..b0e474ad475b 100644
--- a/apps/web/src/components/settings/ThemeSettings.tsx
+++ b/apps/web/src/components/settings/ThemeSettings.tsx
@@ -231,12 +231,12 @@ function ThemeLibraryCard({
                           </button>
                         </ThemeVariantTooltip>
                         <span
-                          className="pointer-events-none absolute bottom-0 left-1/2 inline-flex max-w-24 -translate-x-1/2 items-center gap-1 text-[11px] font-medium text-foreground"
+                          className="pointer-events-none absolute bottom-0 left-1/2 inline-flex max-w-24 -translate-x-1/2 items-center gap-1 text-2xs font-medium text-foreground"
                           style={{ marginLeft: rootOffsetX }}
                         >
                           <span className="truncate">{selected.option.label}</span>
                           {options.length > 1 ? (
-                            <span className="shrink-0 rounded-full bg-muted px-1 text-[9px] text-muted-foreground">
+                            <span className="shrink-0 rounded-full bg-muted px-1 text-3xs text-muted-foreground">
                               +{options.length - 1}
                             </span>
                           ) : null}
@@ -256,7 +256,7 @@ function ThemeLibraryCard({
                                     aria-label={`Use ${option.label} for ${mode} mode${optionIsActive ? ", currently active" : ""}`}
                                     aria-pressed={optionIsActive}
                                     className={cn(
-                                      "absolute left-1/2 top-1 z-30 flex size-7 items-center justify-center rounded-full bg-background shadow-sm outline-none transition-[transform,opacity] duration-200 ease-out motion-reduce:transition-none focus-visible:ring-2 focus-visible:ring-ring",
+                                      "absolute left-1/2 top-1 z-30 flex size-7 items-center justify-center rounded-full bg-background shadow-sm outline-none transition-[opacity,transform] duration-200 ease-out motion-reduce:transition-none focus-visible:ring-2 focus-visible:ring-ring",
                                       optionIsActive ? "ring-2 ring-ring" : "ring-1 ring-border/70",
                                     )}
                                     style={{
@@ -884,12 +884,12 @@ export function ThemeLibrary({
 
   return (
     <div className="space-y-3">
-      <h3 className="px-3 text-sm font-normal tracking-[-0.005em] text-foreground/70 sm:px-4">
+      <h3 className="px-3 text-sm font-normal text-foreground/70 sm:px-4">
         {searchableSetting("color-scheme").title}
       </h3>
       {renderModeTiles()}
       <div className="flex min-h-8 flex-wrap items-center justify-between gap-3 px-3 pt-2 sm:px-4">
-        <h3 className="text-sm font-normal tracking-[-0.005em] text-foreground/70">
+        <h3 className="text-sm font-normal text-foreground/70">
           {searchableSetting("theme").title}
         </h3>
         <div className="flex flex-wrap items-center justify-end gap-2">
diff --git a/apps/web/src/components/settings/ThemeWireframe.tsx b/apps/web/src/components/settings/ThemeWireframe.tsx
index 895d8d1eecb7..6f403ed4301a 100644
--- a/apps/web/src/components/settings/ThemeWireframe.tsx
+++ b/apps/web/src/components/settings/ThemeWireframe.tsx
@@ -66,7 +66,7 @@ function ThemeWireframePane({
 
       {/* Composer */}
       <span
-        className="absolute bottom-[8%] left-[26%] right-[6%] flex h-[15%] items-center justify-between rounded-md px-[2.5%]"
+        className="absolute bottom-[8%] left-[26%] right-[6%] flex h-[15%] items-center justify-between rounded-md px-1"
         style={{
           backgroundColor: colors.surface,
           boxShadow: `inset 0 0 0 1px ${line}`,
@@ -92,7 +92,7 @@ function ThemeWireframePane({
       >
         {[0, 1, 2].map((row) => (
           <span
-            className="absolute left-[11%] right-[11%] flex items-center gap-[5%]"
+            className="absolute left-[11%] right-[11%] flex items-center gap-1"
             key={row}
             style={{ top: `${10 + row * 30}%`, height: "20%" }}
           >
diff --git a/apps/web/src/components/settings/settingsLayout.tsx b/apps/web/src/components/settings/settingsLayout.tsx
index cc0ecf807b85..8fe70c975f77 100644
--- a/apps/web/src/components/settings/settingsLayout.tsx
+++ b/apps/web/src/components/settings/settingsLayout.tsx
@@ -202,7 +202,7 @@ export function SettingsSection({
           className="flex min-h-7 items-start justify-between gap-4 px-3 sm:px-4"
         >
           <div className="min-w-0">
-            <h2 className="flex min-h-7 items-center gap-2 text-sm font-normal tracking-[-0.005em] text-foreground/70">
+            <h2 className="flex min-h-7 items-center gap-2 text-sm font-normal text-foreground/70">
               {icon}
               {title}
             </h2>
@@ -228,7 +228,7 @@ export function SettingsUnavailableGroup({
 
   return (
     <div className="border-border/60 bg-muted/20 py-1.5">
-      <div className="flex items-start gap-2 px-3 py-2 text-[12px] leading-relaxed text-muted-foreground sm:px-4">
+      <div className="flex items-start gap-2 px-3 py-2 text-xs leading-relaxed text-muted-foreground sm:px-4">
         <InfoIcon className="mt-0.5 size-3.5 shrink-0 text-warning" />
         <p>{message}</p>
       </div>
@@ -435,7 +435,7 @@ export function SettingsRow({
       <div className="flex flex-col gap-3 @min-[32rem]/settings-row:grid @min-[32rem]/settings-row:grid-cols-[minmax(0,1fr)_minmax(10rem,auto)] @min-[32rem]/settings-row:items-center @min-[32rem]/settings-row:gap-8">
         <div className="min-w-0 flex-1 space-y-1">
           <div className="flex min-h-5 items-center gap-1.5">
-            <h3 className="text-sm font-medium tracking-[-0.005em] text-foreground">{title}</h3>
+            <h3 className="text-sm font-medium text-foreground">{title}</h3>
             {renderedInheritance ? (
               <span className="inline-flex h-5 w-5 shrink-0 items-center justify-center">
                 {renderedInheritance}
@@ -446,7 +446,7 @@ export function SettingsRow({
             </span>
           </div>
           {description ? (
-            <p className="max-w-xl text-[13px] leading-[1.45] text-muted-foreground/80">
+            <p className="max-w-xl text-xs leading-normal text-muted-foreground/80">
               {description}
             </p>
           ) : null}
diff --git a/apps/web/src/components/sidebar/SidebarProviderUpdatePill.tsx b/apps/web/src/components/sidebar/SidebarProviderUpdatePill.tsx
index b77848f96f24..1a85725041fe 100644
--- a/apps/web/src/components/sidebar/SidebarProviderUpdatePill.tsx
+++ b/apps/web/src/components/sidebar/SidebarProviderUpdatePill.tsx
@@ -125,7 +125,7 @@ export function SidebarProviderUpdatePill() {
 
   return (
     <div
-      className={`group/provider-update relative flex min-h-7 w-full shrink-0 items-center overflow-hidden rounded-lg text-[11px] leading-4 font-medium transform-gpu transition-all duration-180 ease-[cubic-bezier(0.22,1,0.36,1)] will-change-transform ${
+      className={`group/provider-update relative flex min-h-7 w-full shrink-0 items-center overflow-hidden rounded-lg text-2xs leading-4 font-medium transform-gpu transition-all duration-180 ease-drawer will-change-transform ${
         PROVIDER_UPDATE_PILL_STYLES[displayedView.tone]
       } ${
         exitingKey === displayedView.key
@@ -152,7 +152,7 @@ export function SidebarProviderUpdatePill() {
         <div
           key={displayedView.key}
           aria-hidden="true"
-          className={`pointer-events-none absolute inset-y-0 left-0 w-full origin-left animate-[provider-update-pill-countdown_var(--provider-update-pill-dismiss-ms)_linear_forwards] border-r border-current/15 shadow-[inset_0_1px_0_rgb(255_255_255_/_0.08)] ${
+          className={`pointer-events-none absolute inset-y-0 left-0 w-full origin-left scale-x-0 transition-transform duration-(--provider-update-pill-dismiss-ms) ease-linear starting:scale-x-100 border-r border-current/15 inset-shadow-2xs inset-shadow-white/8 ${
             PROVIDER_UPDATE_PILL_PROGRESS_STYLES[displayedView.tone]
           }`}
           style={
diff --git a/apps/web/src/components/sidebar/SidebarThreadHeader.tsx b/apps/web/src/components/sidebar/SidebarThreadHeader.tsx
index 839c2ba37f01..e552e64c19a3 100644
--- a/apps/web/src/components/sidebar/SidebarThreadHeader.tsx
+++ b/apps/web/src/components/sidebar/SidebarThreadHeader.tsx
@@ -83,7 +83,7 @@ export function SidebarThreadHeader({
         ref={searchFieldRef}
         className="flex h-8 min-w-0 flex-1 items-center gap-2 rounded-md px-2 py-1.5 text-sm font-medium text-sidebar-muted-foreground hover:bg-sidebar-row-hover hover:text-sidebar-foreground"
       >
-        <SearchIcon className="size-4 shrink-0 text-[var(--sidebar-icon-color)]" />
+        <SearchIcon className="size-4 shrink-0 text-(--sidebar-icon-color)" />
         <SidebarInput
           ref={searchInputRef}
           nativeInput
diff --git a/apps/web/src/components/sidebar/SidebarUpdatePill.tsx b/apps/web/src/components/sidebar/SidebarUpdatePill.tsx
index f8f61f521032..e9ba268300b2 100644
--- a/apps/web/src/components/sidebar/SidebarUpdatePill.tsx
+++ b/apps/web/src/components/sidebar/SidebarUpdatePill.tsx
@@ -311,7 +311,7 @@ function SidebarUpdateControl() {
               !isInteractionDisabled && "hover:bg-sidebar-row-hover",
             )
           : cn(
-              "text-[var(--sidebar-icon-color)]",
+              "text-(--sidebar-icon-color)",
               !isInteractionDisabled && "hover:bg-sidebar-row-hover hover:text-sidebar-foreground",
             ),
         disabled && !showUpdateIconState && "opacity-60",
diff --git a/apps/web/src/components/usage/UsageLimitsPooled.tsx b/apps/web/src/components/usage/UsageLimitsPooled.tsx
index 49b99ed4e24a..70858262b6a3 100644
--- a/apps/web/src/components/usage/UsageLimitsPooled.tsx
+++ b/apps/web/src/components/usage/UsageLimitsPooled.tsx
@@ -52,7 +52,7 @@ function AccountChip({ email }: { readonly email: string }) {
     <span
       role="img"
       aria-label={`Account ${accountInitials(email)}`}
-      className="inline-flex size-4 shrink-0 items-center justify-center rounded-full text-[9px] leading-none font-semibold"
+      className="inline-flex size-4 shrink-0 items-center justify-center rounded-full text-3xs leading-none font-semibold"
       style={{ backgroundColor: `oklch(0.85 0.08 ${hue})`, color: `oklch(0.35 0.1 ${hue})` }}
     >
       {accountInitials(email)}
@@ -269,7 +269,7 @@ function PoolSegment({
         ) : null}
         <span
           aria-hidden
-          className="absolute inset-0 flex items-center justify-center text-[10px] leading-none font-semibold text-foreground/80 tabular-nums @2xl/pool:hidden"
+          className="absolute inset-0 flex items-center justify-center text-3xs leading-none font-semibold text-foreground/80 tabular-nums @2xl/pool:hidden"
         >
           {index}
         </span>
@@ -277,7 +277,7 @@ function PoolSegment({
           <AccountName account={account} className="min-w-0 truncate font-medium text-foreground" />
           <span className="shrink-0 font-semibold text-foreground tabular-nums">{remaining}%</span>
           {/* Countdown and badge get their own plate: fill and hatching run under them otherwise. */}
-          <span className="ms-auto flex shrink-0 items-center gap-1.5 rounded-sm bg-background/85 px-1.5 py-0.5 text-[11px] text-foreground tabular-nums">
+          <span className="ms-auto flex shrink-0 items-center gap-1.5 rounded-sm bg-background/85 px-1.5 py-0.5 text-2xs text-foreground tabular-nums">
             {resetsIn?.replace("resets in ", "↻ ") ?? ""}
             {credits ? (
               <>
@@ -348,7 +348,7 @@ function LegendRow({
       render={<Button variant="ghost" size="compact" />}
       className="min-w-0 @2xl/pool:hidden"
     >
-      <span className="relative inline-flex size-4 shrink-0 items-center justify-center rounded-sm text-[10px] leading-none font-semibold text-foreground/80 tabular-nums">
+      <span className="relative inline-flex size-4 shrink-0 items-center justify-center rounded-sm text-3xs leading-none font-semibold text-foreground/80 tabular-nums">
         <span
           aria-hidden
           className="absolute inset-0 rounded-sm opacity-35"
@@ -359,7 +359,7 @@ function LegendRow({
       </span>
       <AccountName account={account} className="min-w-0 truncate font-medium text-foreground" />
       <span className="shrink-0 font-semibold text-foreground tabular-nums">{remaining}%</span>
-      <span className="ms-auto flex shrink-0 items-center gap-1.5 text-[11px] text-muted-foreground tabular-nums">
+      <span className="ms-auto flex shrink-0 items-center gap-1.5 text-2xs text-muted-foreground tabular-nums">
         {resetsIn?.replace("resets in ", "↻ ") ?? ""}
         {credits ? (
           <>
diff --git a/apps/web/src/components/usage/UsagePage.tsx b/apps/web/src/components/usage/UsagePage.tsx
index bfbd5ae155a7..b3748e120d1d 100644
--- a/apps/web/src/components/usage/UsagePage.tsx
+++ b/apps/web/src/components/usage/UsagePage.tsx
@@ -428,7 +428,7 @@ export function UsagePage() {
                                 <span className="truncate">
                                   {PROVIDER_PRESENTATION[provider].label}
                                 </span>
-                                <span className="shrink-0 whitespace-nowrap text-[11px] text-muted-foreground tabular-nums">
+                                <span className="shrink-0 whitespace-nowrap text-2xs text-muted-foreground tabular-nums">
                                   {sessionLabel}
                                 </span>
                               </span>
diff --git a/apps/web/src/components/usage/UsageProviderChart.tsx b/apps/web/src/components/usage/UsageProviderChart.tsx
index 4a66349ddfa5..b6388a932ff7 100644
--- a/apps/web/src/components/usage/UsageProviderChart.tsx
+++ b/apps/web/src/components/usage/UsageProviderChart.tsx
@@ -322,7 +322,7 @@ export function UsageProviderChart({
           {ticks.map((tick) => (
             <span
               key={tick}
-              className="absolute right-0 -translate-y-1/2 text-[10px] text-muted-foreground tabular-nums"
+              className="absolute right-0 -translate-y-1/2 text-3xs text-muted-foreground tabular-nums"
               style={{ top: `${(toY(tick) / VIEW_HEIGHT) * 100}%` }}
             >
               {tick === 0 ? "0" : format(tick)}
@@ -434,7 +434,7 @@ export function UsageProviderChart({
         </div>
       </div>
 
-      <div className="flex justify-between pl-16 text-[10px] text-muted-foreground uppercase">
+      <div className="flex justify-between pl-16 text-3xs text-muted-foreground uppercase">
         <span>{periods[0] === undefined ? "" : formatPeriod(periods[0])}</span>
         <span>
           {periods[Math.floor(periods.length / 2)] === undefined
diff --git a/apps/web/src/index.css b/apps/web/src/index.css
index 828f8def37c2..9caf42ca2d6c 100644
--- a/apps/web/src/index.css
+++ b/apps/web/src/index.css
@@ -116,6 +116,17 @@ html[data-mobile-composer-route-transition="true"]::view-transition-old(t3-mobil
   --workspace-titlebar-control-size: 1.75rem;
   --workspace-titlebar-control-gap: 0.75rem;
   --workspace-titlebar-scroll-fade-height: 1.5rem;
+  /* The prompt on phones: iOS zooms into any input under 16px on focus. */
+  --font-size-prompt-touch: max(var(--font-size-prompt, 1rem), 16px);
+  /* Horizontal gutter shared by the page header and the chat column, clear of
+     the device's safe area. */
+  --workspace-gutter: 0.75rem;
+  --workspace-gutter-start: calc(env(safe-area-inset-left) + var(--workspace-gutter));
+  --workspace-gutter-end: calc(env(safe-area-inset-right) + var(--workspace-gutter));
+
+  @variant sm {
+    --workspace-gutter: 1.25rem;
+  }
 
   @variant dark {
     --appearance-contrast-target: white;
@@ -148,6 +159,41 @@ html[data-mobile-composer-route-transition="true"]::view-transition-old(t3-mobil
 }
 
 @theme inline {
+  /* Two steps below Tailwind's text-xs (12px) for dense UI: metadata rows,
+     badges, counters, keyboard hints and diagnostics tables. 2xs is 11px,
+     3xs is 10px and the floor of the scale. Registered with tailwind-merge in
+     lib/utils.ts so cn() treats them as font sizes, not colours. */
+  --text-2xs: 0.6875rem;
+  --text-2xs--line-height: calc(1 / 0.6875);
+  --text-3xs: 0.625rem;
+  --text-3xs--line-height: calc(0.875 / 0.625);
+  /* Motion. drawer is the decelerating curve for surfaces that slide or pop in
+     (composer context, pills). */
+  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);
+  /* The composer's elevation: a soft drop pulled in under the surface, shared
+     by the composer, its context strip and attached banners. */
+  --shadow-composer: 0 12px 28px -18px rgb(0 0 0 / 40%);
+  --shadow-composer-dark: 0 14px 32px -18px rgb(0 0 0 / 75%);
+  /* Dark-mode shade where an attached surface meets the composer: 10px of
+     shadow fading away from the seam. Inline, so the offsets resolve on the
+     element. below: the context strip under the composer (1rem seam, faint
+     white fill). above: an attached banner over it (its tint on top). */
+  --background-image-composer-seam-below:
+    linear-gradient(
+      to bottom,
+      transparent 0 1rem,
+      rgb(0 0 0 / 18%) 1rem,
+      transparent calc(1rem + 10px)
+    ),
+    linear-gradient(rgb(255 255 255 / 1%), rgb(255 255 255 / 1%));
+  --background-image-composer-seam-above:
+    linear-gradient(var(--chat-composer-attached-tint), var(--chat-composer-attached-tint)),
+    linear-gradient(
+      to top,
+      transparent 0 var(--chat-composer-attachment-overlap),
+      rgb(0 0 0 / 18%) var(--chat-composer-attachment-overlap),
+      transparent calc(var(--chat-composer-attachment-overlap) + 10px)
+    );
   --color-zinc-25: oklch(99.2% 0 0);
   --animate-skeleton: skeleton 2.4s infinite;
   /* Duty-cycled indicator animations: long holds with stepped ramps, so the
@@ -1936,40 +1982,6 @@ code {
   overflow-wrap: anywhere;
 }
 
-/* Prompt-stash save acknowledgement: the new count fades up from just below
-   its resting position, once, then stops. One-shot and event-driven (React
-   remounts the element by key on each stash) — no continuous animation. */
-@keyframes prompt-stash-count-enter {
-  from {
-    opacity: 0;
-    transform: translateY(2px);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
-/* Expanded capture preview swaps between the screenshot and its extracted text.
-   One-shot fade on whichever panel mounts, so nothing repaints continuously. */
-@keyframes snap-shot-contents-enter {
-  from {
-    opacity: 0;
-  }
-  to {
-    opacity: 1;
-  }
-}
-
-@keyframes provider-update-pill-countdown {
-  from {
-    transform: scaleX(1);
-  }
-  to {
-    transform: scaleX(0);
-  }
-}
-
 :root {
   --diff-addition: var(--success);
   --diff-deletion: var(--destructive);
diff --git a/apps/web/src/lib/utils.ts b/apps/web/src/lib/utils.ts
index 3445a06bbb62..43d55682e12d 100644
--- a/apps/web/src/lib/utils.ts
+++ b/apps/web/src/lib/utils.ts
@@ -1,9 +1,13 @@
 import { MessageId, ProjectId, ThreadId } from "@t3tools/contracts";
 import { type CxOptions, cx } from "class-variance-authority";
 import * as Encoding from "effect/Encoding";
-import { twMerge } from "tailwind-merge";
+import { extendTailwindMerge } from "tailwind-merge";
 import { DraftId } from "../composerDraftStore";
 
+// The theme's extra font sizes (index.css). Unregistered, tailwind-merge reads
+// text-2xs as a colour and drops it next to text-muted-foreground.
+const twMerge = extendTailwindMerge({ extend: { theme: { text: ["2xs", "3xs"] } } });
+
 export function cn(...inputs: CxOptions) {
   return twMerge(cx(inputs));
 }
diff --git a/vite.config.ts b/vite.config.ts
index 3493e29201a1..afe23dcb9b8c 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -225,6 +225,41 @@ export default defineConfig({
         rules: {
           // A className built at runtime on a ui component is one no-restyle cannot read.
           "shadcn/require-static-classes": "error",
+          // Appearance values come from the theme and Tailwind's scales. Layout stays free
+          // (placement belongs to the parent); the other entries are values no scale can hold.
+          "shadcn/no-arbitrary-values": [
+            "error",
+            {
+              allow: [
+                "layout",
+                // Which properties an element animates is per-element behaviour, like layout,
+                // not a design value; timing curves and durations still come from the theme.
+                "transition",
+                // Overlays that follow their frame's corner, which is set at runtime
+                // (floating preview) or by the element they decorate (composer outline).
+                "rounded-[inherit]",
+                // Inline chips size in em so they scale with the text they sit in
+                // (the composer honours the prompt font-size preference).
+                "gap-[0.33em]",
+                "px-[0.5em]",
+                "rounded-[0.5em]",
+                "text-[0.86em]",
+                // Project icons render from 14px to 48px and keep one proportional corner.
+                "rounded-[25%]",
+                // An emoji project icon fills its container, whatever size the parent gives it.
+                "text-[length:80cqh]",
+                // The platform's own selection colour on a selected composer chip.
+                "bg-[Highlight]",
+                // Brand marks keep their brand colours (Cursor, Grok, Claude).
+                "fill-[#26251E]",
+                "fill-[#EDECEC]",
+                "fill-[#0F0F0F]",
+                "fill-[#F5F5F5]",
+                "fill-[#d97757]",
+                "text-[#d97757]",
+              ],
+            },
+          ],
           "shadcn/no-restyle": [
             "error",
             {
@@ -242,6 +277,11 @@ export default defineConfig({
           ],
         },
       },
+      {
+        // The sign-in masthead is T3 brand artwork: fixed gradients, not theme surfaces.
+        files: ["apps/web/src/components/auth/AuthSurfaceShell.tsx"],
+        rules: { "shadcn/no-arbitrary-values": "off" },
+      },
       {
         // Shared client code must not call APIs missing from Hermes. Our ESNext
         // TypeScript target accepts them even when they would crash mobile at launch.