From 627df884dd87e091f087944b36927eea57e3b04c Mon Sep 17 00:00:00 2001
From: DongHyeonka <ehdgus6435@kumoh.ac.kr>
Date: Sat, 15 Aug 2026 21:20:47 +0900
Subject: [PATCH] feat: port TechLog shells and styles

---
 src/bootstrap/main.tsx                        |    6 +
 .../tech-log/adapters/static/content.ts       |    9 +-
 .../tech-log/contracts/public-site-config.ts  |    8 +
 .../public/components/fatal-error-state.tsx   |   37 +
 .../public/components/search-dialog.tsx       |  119 +
 .../public/components/site-header.tsx         |   88 +
 .../presentation/public/public-shell.tsx      |   38 +
 .../tech-log/presentation/styles/globals.css  | 2590 +++++++++++++++++
 .../styles/publication-flow.module.css        |  533 ++++
 .../presentation/styles/studio-editor.css     |   92 +
 .../tech-log/presentation/styles/studio.css   |  155 +
 .../presentation/styles/workflow.module.css   |   88 +
 tests/features/tech-log/public-shell.test.tsx |  227 ++
 .../features/tech-log/style-contract.test.ts  |  142 +
 14 files changed, 4124 insertions(+), 8 deletions(-)
 create mode 100644 src/features/tech-log/contracts/public-site-config.ts
 create mode 100644 src/features/tech-log/presentation/public/components/fatal-error-state.tsx
 create mode 100644 src/features/tech-log/presentation/public/components/search-dialog.tsx
 create mode 100644 src/features/tech-log/presentation/public/components/site-header.tsx
 create mode 100644 src/features/tech-log/presentation/public/public-shell.tsx
 create mode 100644 src/features/tech-log/presentation/styles/globals.css
 create mode 100644 src/features/tech-log/presentation/styles/publication-flow.module.css
 create mode 100644 src/features/tech-log/presentation/styles/studio-editor.css
 create mode 100644 src/features/tech-log/presentation/styles/studio.css
 create mode 100644 src/features/tech-log/presentation/styles/workflow.module.css
 create mode 100644 tests/features/tech-log/public-shell.test.tsx
 create mode 100644 tests/features/tech-log/style-contract.test.ts

diff --git a/src/bootstrap/main.tsx b/src/bootstrap/main.tsx
index bc5509e..55ef0ea 100644
--- a/src/bootstrap/main.tsx
+++ b/src/bootstrap/main.tsx
@@ -3,6 +3,12 @@ import { createRoot } from "react-dom/client";
 import { recordBootFailure } from "../adapters/diagnostics/bounded-diagnostics.ts";
 import { BootErrorShell } from "../presentation/boundaries/boot-error-shell.tsx";
 import "../presentation/styles/theme.css";
+import "pretendard/dist/web/variable/pretendardvariable.css";
+import "@fontsource/ibm-plex-mono/400.css";
+import "@fontsource/ibm-plex-mono/500.css";
+import "../features/tech-log/presentation/styles/globals.css";
+import "../features/tech-log/presentation/styles/studio.css";
+import "../features/tech-log/presentation/styles/studio-editor.css";
 import { createRuntimeComposition } from "./create-runtime-composition.ts";
 import { initializeColorScheme } from "./initialize-color-scheme.ts";
 import { ReleaseManifestError } from "./load-release-manifest.ts";
diff --git a/src/features/tech-log/adapters/static/content.ts b/src/features/tech-log/adapters/static/content.ts
index f3fbe1e..6923308 100644
--- a/src/features/tech-log/adapters/static/content.ts
+++ b/src/features/tech-log/adapters/static/content.ts
@@ -1,14 +1,7 @@
 import { projects, publicRecords, releases } from "./public-content.ts";
 import { getHomeFocusItems, searchPublicContent } from "./public-query.ts";
 
-export const siteConfig = {
-  brandTitle: "TechLog",
-  identityStatement: "문제를 재현하고 검증해 운영 가능한 설계로 연결합니다.",
-  operator: "동현",
-  contactLabel: "프로필",
-  contactPath: "/profile",
-  latestRelease: "/releases/0.1.0",
-} as const;
+export { publicSiteConfig as siteConfig } from "../../contracts/public-site-config.ts";
 
 export type {
   FocusKey,
diff --git a/src/features/tech-log/contracts/public-site-config.ts b/src/features/tech-log/contracts/public-site-config.ts
new file mode 100644
index 0000000..97a27b4
--- /dev/null
+++ b/src/features/tech-log/contracts/public-site-config.ts
@@ -0,0 +1,8 @@
+export const publicSiteConfig = Object.freeze({
+  brandTitle: "TechLog",
+  identityStatement: "문제를 재현하고 검증해 운영 가능한 설계로 연결합니다.",
+  operator: "동현",
+  contactLabel: "프로필",
+  contactPath: "/profile",
+  latestRelease: "/releases/0.1.0",
+});
diff --git a/src/features/tech-log/presentation/public/components/fatal-error-state.tsx b/src/features/tech-log/presentation/public/components/fatal-error-state.tsx
new file mode 100644
index 0000000..ae61240
--- /dev/null
+++ b/src/features/tech-log/presentation/public/components/fatal-error-state.tsx
@@ -0,0 +1,37 @@
+import { Link } from "react-router-dom";
+
+type FatalErrorStateProps = {
+  traceId: string;
+  onRetry?: () => void;
+  retryHref?: string;
+};
+
+export function FatalErrorState({
+  traceId,
+  onRetry,
+  retryHref = "/",
+}: FatalErrorStateProps) {
+  return (
+    <main id="main-content" className="shell fatal-state">
+      <p className="context-label">Service error</p>
+      <h1>페이지를 불러오지 못했습니다.</h1>
+      <p>
+        잠시 후 다시 시도해 주세요. 문제가 계속되면 아래 Trace ID를 함께
+        전달해 주세요.
+      </p>
+      <p className="trace-id">
+        <span>Trace ID</span>
+        <code>{traceId}</code>
+      </p>
+      {onRetry ? (
+        <button className="primary-link" type="button" onClick={onRetry}>
+          다시 시도
+        </button>
+      ) : (
+        <Link className="primary-link" to={retryHref}>
+          다시 시도
+        </Link>
+      )}
+    </main>
+  );
+}
diff --git a/src/features/tech-log/presentation/public/components/search-dialog.tsx b/src/features/tech-log/presentation/public/components/search-dialog.tsx
new file mode 100644
index 0000000..56e1cfa
--- /dev/null
+++ b/src/features/tech-log/presentation/public/components/search-dialog.tsx
@@ -0,0 +1,119 @@
+import { useId, useRef, useState } from "react";
+import { Link } from "react-router-dom";
+
+import { TECH_LOG_FEATURE_ID } from "../../../application/tech-log-feature-input.ts";
+import { useApplication } from "../../../../../presentation/providers/application-provider.tsx";
+
+type SearchDialogProps = {
+  className?: string;
+  onBeforeOpen?: () => void;
+};
+
+export function SearchDialog({
+  className = "",
+  onBeforeOpen,
+}: SearchDialogProps) {
+  const dialogId = useId();
+  const dialogRef = useRef<HTMLDialogElement>(null);
+  const inputRef = useRef<HTMLInputElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
+  const [query, setQuery] = useState("");
+  const normalizedQuery = query.trim().toLocaleLowerCase("ko-KR");
+  const { publicContent } = useApplication().features.get(TECH_LOG_FEATURE_ID);
+  const results = publicContent.searchPublicContent(normalizedQuery);
+
+  function open() {
+    onBeforeOpen?.();
+    dialogRef.current?.showModal();
+    requestAnimationFrame(() => inputRef.current?.focus());
+  }
+
+  function close() {
+    dialogRef.current?.close();
+  }
+
+  return (
+    <>
+      <button
+        ref={triggerRef}
+        className={className}
+        type="button"
+        aria-haspopup="dialog"
+        aria-controls={dialogId}
+        aria-label="TechLog 검색 열기"
+        onClick={open}
+      >
+        검색
+      </button>
+      <dialog
+        ref={dialogRef}
+        className="search-dialog"
+        id={dialogId}
+        aria-labelledby={dialogId + "-title"}
+        onClose={() => triggerRef.current?.focus()}
+        onKeyDown={(event) => {
+          if (event.key === "Escape") {
+            event.preventDefault();
+            close();
+          }
+        }}
+        onClick={(event) => {
+          if (event.target === event.currentTarget) close();
+        }}
+      >
+        <div className="search-dialog-inner">
+          <header>
+            <div>
+              <p className="context-label">Public records</p>
+              <h2 id={dialogId + "-title"}>TechLog 검색</h2>
+            </div>
+            <button type="button" className="dialog-close" onClick={close}>
+              닫기
+            </button>
+          </header>
+          <label className="search-field">
+            <span className="visually-hidden">검색어</span>
+            <span aria-hidden="true">⌕</span>
+            <input
+              ref={inputRef}
+              type="search"
+              value={query}
+              onChange={(event) => setQuery(event.target.value)}
+              placeholder="제목, 요약, 주제, 프로젝트 검색"
+              autoComplete="off"
+            />
+          </label>
+          <p className="search-count" aria-live="polite">
+            {results.length}개의 공개 기록
+          </p>
+          {results.length > 0 ? (
+            <>
+              <ul className="search-results">
+                {results.map((entry) => (
+                  <li key={entry.path}>
+                    <Link to={entry.path} onClick={close}>
+                      <span>{entry.contentType}</span>
+                      <strong>{entry.title}</strong>
+                      <p>{entry.summary}</p>
+                    </Link>
+                  </li>
+                ))}
+              </ul>
+              {normalizedQuery ? (
+                <Link
+                  className="search-all-link"
+                  to={`/search?q=${encodeURIComponent(query.trim())}`}
+                  onClick={close}
+                >
+                  전체 검색 결과 보기 <span aria-hidden="true">→</span>
+                </Link>
+              ) : null}
+            </>
+          ) : (
+            <p className="search-empty">일치하는 공개 기록이 없습니다.</p>
+          )}
+        </div>
+      </dialog>
+    </>
+  );
+}
diff --git a/src/features/tech-log/presentation/public/components/site-header.tsx b/src/features/tech-log/presentation/public/components/site-header.tsx
new file mode 100644
index 0000000..dcedc98
--- /dev/null
+++ b/src/features/tech-log/presentation/public/components/site-header.tsx
@@ -0,0 +1,88 @@
+import { useRef } from "react";
+import { Link, useLocation } from "react-router-dom";
+
+import { publicSiteConfig } from "../../../contracts/public-site-config.ts";
+import { SearchDialog } from "./search-dialog.tsx";
+
+const navigation = [
+  { label: "탐색", path: "/explore" },
+  { label: "프로젝트", path: "/projects" },
+  { label: "변경 기록", path: "/releases" },
+  { label: "프로필", path: "/profile" },
+] as const;
+
+export function SiteHeader({ currentPath }: { currentPath?: string }) {
+  const location = useLocation();
+  const activePath = currentPath ?? location.pathname;
+  const menuRef = useRef<HTMLDetailsElement>(null);
+  const summaryRef = useRef<HTMLElement>(null);
+
+  function isCurrent(path: string) {
+    return (
+      activePath === path ||
+      (path !== "/" && activePath.startsWith(path + "/"))
+    );
+  }
+
+  function closeMenu(restoreFocus = false) {
+    if (!menuRef.current) return;
+    menuRef.current.open = false;
+    if (restoreFocus) summaryRef.current?.focus();
+  }
+
+  return (
+    <header className="site-header">
+      <div className="shell header-inner">
+        <div className="header-brand-zone">
+          <Link className="wordmark" to="/" aria-label="TechLog 홈">
+            {publicSiteConfig.brandTitle}
+          </Link>
+        </div>
+
+        <div className="header-menu-zone">
+          <nav className="desktop-nav" aria-label="주요 탐색">
+            {navigation.map((item) => (
+              <Link
+                key={item.path}
+                className="nav-link"
+                to={item.path}
+                aria-current={isCurrent(item.path) ? "page" : undefined}
+              >
+                {item.label}
+              </Link>
+            ))}
+          </nav>
+          <div className="header-search-zone">
+            <SearchDialog
+              className="search-button"
+              onBeforeOpen={() => closeMenu()}
+            />
+          </div>
+          <details
+            ref={menuRef}
+            className="mobile-nav"
+            onKeyDown={(event) => {
+              if (event.key !== "Escape") return;
+              event.preventDefault();
+              closeMenu(true);
+            }}
+          >
+            <summary ref={summaryRef}>메뉴</summary>
+            <nav aria-label="모바일 주요 탐색">
+              {navigation.map((item) => (
+                <Link
+                  key={item.path}
+                  to={item.path}
+                  aria-current={isCurrent(item.path) ? "page" : undefined}
+                  onClick={() => closeMenu()}
+                >
+                  {item.label}
+                </Link>
+              ))}
+            </nav>
+          </details>
+        </div>
+      </div>
+    </header>
+  );
+}
diff --git a/src/features/tech-log/presentation/public/public-shell.tsx b/src/features/tech-log/presentation/public/public-shell.tsx
new file mode 100644
index 0000000..a94646e
--- /dev/null
+++ b/src/features/tech-log/presentation/public/public-shell.tsx
@@ -0,0 +1,38 @@
+import type { ReactNode } from "react";
+import { Link } from "react-router-dom";
+
+import { publicSiteConfig } from "../../contracts/public-site-config.ts";
+import { SiteHeader } from "./components/site-header.tsx";
+
+type PublicShellProps = {
+  children: ReactNode;
+  currentPath?: string;
+};
+
+export function PublicShell({ children, currentPath }: PublicShellProps) {
+  return (
+    <div className="site-frame">
+      <a className="skip-link" href="#main-content">
+        본문으로 건너뛰기
+      </a>
+      <SiteHeader currentPath={currentPath} />
+
+      {children}
+
+      <footer className="site-footer">
+        <div className="shell footer-inner">
+          <div>
+            <p className="footer-name">{publicSiteConfig.operator}</p>
+            <p>{publicSiteConfig.identityStatement}</p>
+          </div>
+          <div className="footer-links">
+            <Link to={publicSiteConfig.contactPath}>
+              {publicSiteConfig.contactLabel}
+            </Link>
+            <Link to={publicSiteConfig.latestRelease}>최신 Release</Link>
+          </div>
+        </div>
+      </footer>
+    </div>
+  );
+}
diff --git a/src/features/tech-log/presentation/styles/globals.css b/src/features/tech-log/presentation/styles/globals.css
new file mode 100644
index 0000000..c5fb2a2
--- /dev/null
+++ b/src/features/tech-log/presentation/styles/globals.css
@@ -0,0 +1,2590 @@
+
+:root {
+  --canvas: #f7f7f5;
+  --paper: #fcfcfb;
+  --ink: #17181b;
+  --ink-soft: #3f4249;
+  --muted: #5a5d64;
+  --faint: #6c6f76;
+  --line: #e2e3e1;
+  --line-strong: #c8cbcf;
+  --signal: #3e5cc7;
+  --signal-soft: #eef1fc;
+  --evidence: #176b5b;
+  --evidence-soft: #edf7f3;
+  --warning: #965b18;
+  --warning-soft: #fff7ed;
+  --code-canvas: #15181d;
+  --shell: 1180px;
+  --body-copy: 42rem;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+html {
+  background: var(--canvas);
+  color: var(--ink);
+  scroll-behavior: smooth;
+}
+
+body {
+  margin: 0;
+  min-width: 320px;
+  overflow-x: hidden;
+  background:
+    linear-gradient(to bottom, rgba(255, 255, 255, 0.45), transparent 420px),
+    var(--canvas);
+  color: var(--ink);
+  font-family:
+    "Pretendard Variable",
+    Pretendard,
+    -apple-system,
+    BlinkMacSystemFont,
+    "Segoe UI",
+    sans-serif;
+  font-size: 16px;
+  font-weight: 400;
+  line-height: 1.6;
+  word-break: keep-all;
+  text-rendering: optimizeLegibility;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+button,
+input {
+  font: inherit;
+}
+
+button,
+summary,
+a {
+  -webkit-tap-highlight-color: transparent;
+}
+
+::selection {
+  background: #dce3ff;
+  color: var(--ink);
+}
+
+:focus-visible {
+  outline: 2px solid var(--signal);
+  outline-offset: 4px;
+}
+
+.site-frame {
+  min-height: 100vh;
+}
+
+.shell {
+  width: min(var(--shell), calc(100% - 80px));
+  margin-inline: auto;
+}
+
+.skip-link {
+  position: fixed;
+  z-index: 100;
+  top: 12px;
+  left: 16px;
+  padding: 10px 14px;
+  border: 1px solid var(--line-strong);
+  border-radius: 6px;
+  background: var(--paper);
+  color: var(--ink);
+  font-size: 14px;
+  font-weight: 600;
+  transform: translateY(-160%);
+  transition: transform 120ms ease;
+}
+
+.skip-link:focus {
+  transform: translateY(0);
+}
+
+.site-header {
+  border-bottom: 1px solid rgba(226, 227, 225, 0.9);
+}
+
+.header-inner {
+  display: grid;
+  min-height: 76px;
+  grid-template-columns: minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 48px;
+}
+
+.header-brand-zone { justify-self: start; }
+.header-menu-zone { display: flex; align-items: center; justify-self: end; gap: 18px; }
+
+.wordmark {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  font-size: 17px;
+  font-weight: 680;
+  letter-spacing: -0.025em;
+}
+
+.desktop-nav {
+  display: flex;
+  align-items: stretch;
+  gap: 30px;
+  color: var(--muted);
+  font-size: 14px;
+  font-weight: 500;
+}
+
+.nav-link,
+.search-button {
+  position: relative;
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+}
+
+.nav-link::after {
+  position: absolute;
+  right: 0;
+  bottom: 2px;
+  left: 0;
+  height: 1px;
+  background: var(--ink);
+  content: "";
+  opacity: 0;
+  transform: scaleX(0.5);
+  transition:
+    opacity 120ms ease,
+    transform 120ms ease;
+}
+
+.nav-link:hover,
+.nav-link[aria-current="page"] {
+  color: var(--ink);
+}
+
+.nav-link:hover::after,
+.nav-link[aria-current="page"]::after {
+  opacity: 1;
+  transform: scaleX(1);
+}
+
+.search-button,
+.header-search-zone button {
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: var(--muted);
+  cursor: pointer;
+  font-size: 14px;
+  font-weight: 500;
+}
+
+.search-button:hover,
+.header-search-zone button:hover {
+  color: var(--ink);
+}
+
+.mobile-nav {
+  display: none;
+}
+
+.context-label,
+.section-kicker {
+  margin: 0;
+  color: var(--muted);
+  font-size: 12px;
+  font-weight: 650;
+  letter-spacing: 0.105em;
+  line-height: 1.4;
+  text-transform: uppercase;
+}
+
+.home-identity {
+  padding-top: 112px;
+  padding-bottom: 126px;
+}
+
+.home-identity h1 {
+  margin: 0 0 24px;
+  font-size: clamp(48px, 5vw, 56px);
+  font-weight: 680;
+  letter-spacing: -0.055em;
+  line-height: 1.02;
+}
+
+.identity-statement {
+  max-width: 680px;
+  margin: 0;
+  color: var(--ink-soft);
+  font-size: clamp(23px, 2.2vw, 29px);
+  font-weight: 430;
+  letter-spacing: -0.028em;
+  line-height: 1.48;
+}
+
+.text-link {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  gap: 8px;
+  color: var(--signal);
+  font-size: 14px;
+  font-weight: 600;
+}
+
+.text-link:hover {
+  text-decoration: underline;
+  text-decoration-thickness: 1px;
+  text-underline-offset: 4px;
+}
+
+.identity-link {
+  margin-top: 38px;
+}
+
+.focus-section {
+  padding: 34px 0 44px;
+  border-top: 1px solid var(--line);
+  border-bottom: 1px solid var(--line);
+}
+
+.focus-tabs-static {
+  display: flex;
+  gap: 27px;
+  margin-top: 18px;
+  color: var(--faint);
+  font-size: 14px;
+  font-weight: 560;
+}
+
+.focus-tabs-static span {
+  position: relative;
+  display: inline-flex;
+  min-height: 36px;
+  align-items: center;
+}
+
+.focus-tabs-static .is-active {
+  color: var(--ink);
+}
+
+.focus-tabs-static .is-active::after {
+  position: absolute;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  height: 2px;
+  background: var(--signal);
+  content: "";
+}
+
+.focus-tabs {
+  display: flex;
+  gap: 27px;
+  margin-top: 18px;
+}
+
+.focus-tabs button {
+  position: relative;
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: var(--faint);
+  cursor: pointer;
+  font-size: 14px;
+  font-weight: 560;
+}
+
+.focus-tabs button[aria-selected="true"] {
+  color: var(--ink);
+}
+
+.focus-tabs button[aria-selected="true"]::after {
+  position: absolute;
+  right: 0;
+  bottom: 2px;
+  left: 0;
+  height: 2px;
+  background: var(--signal);
+  content: "";
+}
+
+.focus-content {
+  display: grid;
+  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
+  gap: 90px;
+  padding-top: 32px;
+}
+
+.focus-summary h2 {
+  max-width: 700px;
+  margin: 0;
+  font-size: clamp(29px, 3vw, 38px);
+  font-weight: 650;
+  letter-spacing: -0.04em;
+  line-height: 1.22;
+}
+
+.focus-summary > p {
+  max-width: 620px;
+  margin: 17px 0 17px;
+  color: var(--ink-soft);
+  font-size: 18px;
+  line-height: 1.72;
+}
+
+.focus-details {
+  margin: 2px 0 0;
+}
+
+.focus-details div {
+  display: grid;
+  grid-template-columns: 86px 1fr;
+  gap: 18px;
+  padding: 12px 0;
+  border-bottom: 1px solid var(--line);
+}
+
+.focus-details div:first-child {
+  padding-top: 0;
+}
+
+.focus-details div:last-child {
+  border-bottom: 0;
+}
+
+.focus-details dt {
+  color: var(--faint);
+  font-size: 13px;
+  font-weight: 540;
+}
+
+.focus-details dd {
+  margin: 0;
+  color: var(--ink-soft);
+  font-size: 14px;
+  font-weight: 520;
+  line-height: 1.55;
+}
+
+.latest-section,
+.explore-section {
+  padding-top: 128px;
+}
+
+.section-heading-row {
+  display: flex;
+  align-items: flex-end;
+  justify-content: space-between;
+  gap: 32px;
+  padding-bottom: 28px;
+}
+
+.section-heading-row h2 {
+  margin: 11px 0 0;
+  font-size: 30px;
+  font-weight: 650;
+  letter-spacing: -0.045em;
+  line-height: 1.15;
+}
+
+.section-action {
+  margin-bottom: 3px;
+}
+
+.latest-list,
+.explore-list,
+.document-relations ul {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.latest-list {
+  border-top: 1px solid var(--line-strong);
+}
+
+.latest-list li {
+  border-bottom: 1px solid var(--line);
+}
+
+.latest-row {
+  display: grid;
+  grid-template-columns: 156px minmax(0, 1fr) 160px 24px;
+  gap: 30px;
+  align-items: start;
+  padding: 31px 2px 32px;
+  transition: color 120ms ease;
+}
+
+.latest-time {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding-top: 3px;
+  color: var(--muted);
+  font-size: 13px;
+  font-weight: 540;
+  letter-spacing: 0.01em;
+}
+
+.latest-time span {
+  color: var(--ink);
+  font-weight: 650;
+}
+
+.latest-copy h3 {
+  margin: 0;
+  font-size: 20px;
+  font-weight: 620;
+  letter-spacing: -0.025em;
+  line-height: 1.45;
+}
+
+.latest-copy > p {
+  max-width: 680px;
+  margin: 8px 0 0;
+  color: var(--muted);
+  font-size: 15px;
+  line-height: 1.65;
+}
+
+.latest-context {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+  padding-top: 4px;
+  color: var(--faint);
+  font-size: 13px;
+  line-height: 1.5;
+}
+
+.latest-context span:last-child {
+  color: var(--muted);
+}
+
+.latest-arrow {
+  padding-top: 2px;
+  color: var(--faint);
+  font-size: 16px;
+  opacity: 0;
+  transform: translate(-4px, 4px);
+  transition:
+    opacity 120ms ease,
+    transform 120ms ease;
+}
+
+.latest-row:hover .latest-copy h3 {
+  color: var(--signal);
+}
+
+.latest-row:hover .latest-arrow {
+  opacity: 1;
+  transform: translate(0, 0);
+}
+
+.latest-mobile-meta {
+  display: none;
+}
+
+.latest-state {
+  min-height: 132px;
+  margin: 0;
+  padding: 34px 2px;
+  border-top: 1px solid var(--line-strong);
+  border-bottom: 1px solid var(--line);
+  color: var(--muted);
+  font-size: 15px;
+}
+
+.latest-state--error {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 24px;
+}
+
+.latest-state--error p { margin: 0; }
+
+.explore-section {
+  padding-bottom: 140px;
+}
+
+.explore-heading {
+  padding-bottom: 27px;
+}
+
+.explore-list {
+  border-top: 1px solid var(--line-strong);
+}
+
+.explore-list li {
+  border-bottom: 1px solid var(--line);
+}
+
+.explore-list a {
+  display: grid;
+  min-height: 76px;
+  grid-template-columns: minmax(0, 1fr) 150px 22px;
+  gap: 24px;
+  align-items: center;
+  color: var(--ink-soft);
+  font-size: 17px;
+  letter-spacing: -0.015em;
+}
+
+.explore-list strong {
+  color: var(--ink);
+  font-size: 14px;
+  font-weight: 620;
+}
+
+.explore-list a > span:last-child {
+  color: var(--faint);
+  opacity: 0;
+  transform: translateX(-4px);
+  transition:
+    opacity 120ms ease,
+    transform 120ms ease;
+}
+
+.explore-list a:hover {
+  color: var(--signal);
+}
+
+.explore-list a:hover > span:last-child {
+  opacity: 1;
+  transform: translateX(0);
+}
+
+.site-footer {
+  border-top: 1px solid var(--line);
+}
+
+.footer-inner {
+  display: flex;
+  min-height: 172px;
+  align-items: center;
+  justify-content: space-between;
+  gap: 40px;
+  color: var(--muted);
+  font-size: 13px;
+}
+
+.footer-inner p {
+  margin: 0;
+}
+
+.footer-name {
+  margin-bottom: 5px !important;
+  color: var(--ink);
+  font-size: 14px;
+  font-weight: 640;
+}
+
+.footer-links {
+  display: flex;
+  gap: 26px;
+}
+
+.footer-links a:hover {
+  color: var(--signal);
+}
+
+/* Case */
+
+.case-header {
+  max-width: 1000px;
+  padding-top: 96px;
+  padding-bottom: 72px;
+}
+
+.case-breadcrumb {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 9px;
+  align-items: center;
+  margin-bottom: 27px;
+  color: var(--muted);
+  font-size: 13px;
+  font-weight: 560;
+}
+
+.case-breadcrumb a:hover {
+  color: var(--signal);
+}
+
+.case-breadcrumb span {
+  color: var(--line-strong);
+}
+
+.case-header h1 {
+  max-width: 930px;
+  margin: 0;
+  font-size: clamp(42px, 5vw, 52px);
+  font-weight: 660;
+  letter-spacing: -0.052em;
+  line-height: 1.14;
+}
+
+.case-summary {
+  max-width: 790px;
+  margin: 27px 0 0;
+  color: var(--ink-soft);
+  font-size: 21px;
+  font-weight: 430;
+  letter-spacing: -0.022em;
+  line-height: 1.62;
+}
+
+.case-snapshot {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  margin-top: 56px;
+  border-top: 1px solid var(--line-strong);
+  border-bottom: 1px solid var(--line);
+}
+
+.case-snapshot > div {
+  padding: 30px 38px 32px 0;
+}
+
+.case-snapshot > div + div {
+  padding-right: 0;
+  padding-left: 38px;
+  border-left: 1px solid var(--line);
+}
+
+.case-snapshot p {
+  margin: 0;
+}
+
+.case-snapshot > div > p:last-child {
+  margin-top: 11px;
+  color: var(--ink-soft);
+  font-size: 17px;
+  line-height: 1.72;
+}
+
+.snapshot-label {
+  color: var(--warning);
+  font-size: 12px;
+  font-weight: 690;
+  letter-spacing: 0.09em;
+}
+
+.snapshot-label--answer {
+  color: var(--evidence);
+}
+
+.case-meta {
+  display: grid;
+  grid-template-columns: 1fr 1fr 1fr;
+  gap: 32px;
+  margin: 28px 0 0;
+}
+
+.case-meta div {
+  min-width: 0;
+}
+
+.case-meta dt {
+  margin-bottom: 5px;
+  color: var(--faint);
+  font-size: 12px;
+  font-weight: 580;
+}
+
+.case-meta dd {
+  margin: 0;
+  color: var(--muted);
+  font-size: 13px;
+  line-height: 1.55;
+}
+
+.document-layout {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 178px;
+  gap: 72px;
+  align-items: start;
+  padding-bottom: 136px;
+}
+
+.document-body {
+  min-width: 0;
+  width: min(100%, var(--body-copy));
+  justify-self: center;
+}
+
+.document-body section {
+  scroll-margin-top: 32px;
+}
+
+.document-body section + section:not(.document-relations) {
+  margin-top: 0;
+}
+
+.document-body h2 {
+  margin: 3.2em 0 0.9em;
+  font-size: 30px;
+  font-weight: 640;
+  letter-spacing: -0.035em;
+  line-height: 1.3;
+}
+
+.document-body section:first-child h2 {
+  margin-top: 0;
+}
+
+.heading-anchor {
+  display: inline-flex;
+  align-items: baseline;
+  gap: 11px;
+}
+
+.heading-anchor > span {
+  color: var(--line-strong);
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 14px;
+  font-weight: 400;
+  opacity: 0;
+  transition: opacity 120ms ease;
+}
+
+.heading-anchor:hover > span,
+.heading-anchor:focus-visible > span {
+  opacity: 1;
+}
+
+.document-body > section > p,
+.document-body > section > ol {
+  margin-top: 0;
+  margin-bottom: 1.2em;
+  color: var(--ink-soft);
+  font-size: 18px;
+  line-height: 1.78;
+  overflow-wrap: break-word;
+}
+
+.document-body > section > ol {
+  padding-left: 1.35em;
+}
+
+.document-body > section > ol li {
+  padding-left: 0.35em;
+  margin-bottom: 0.45em;
+}
+
+.document-body code:not(pre code) {
+  padding: 0.08em 0.3em;
+  border-radius: 4px;
+  background: #ececea;
+  color: #30333a;
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 0.86em;
+  word-break: break-word;
+}
+
+.code-block {
+  width: min(58rem, calc(100% + 12rem));
+  margin: 38px 0 39px 50%;
+  overflow: hidden;
+  border: 1px solid #242831;
+  border-radius: 8px;
+  background: var(--code-canvas);
+  color: #e8ebf2;
+  transform: translateX(-50%);
+}
+
+.code-block figcaption {
+  display: flex;
+  min-height: 46px;
+  align-items: center;
+  gap: 10px;
+  padding: 0 18px;
+  border-bottom: 1px solid #292e38;
+  color: #9ea5b2;
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 11px;
+  letter-spacing: 0.06em;
+}
+
+.code-block figcaption button {
+  min-width: 52px;
+  min-height: 44px;
+  margin-left: auto;
+  padding: 0 10px;
+  border: 1px solid #343a46;
+  border-radius: 5px;
+  background: transparent;
+  color: #c7ceda;
+  cursor: pointer;
+  font-family: "Pretendard Variable", Pretendard, sans-serif;
+  font-size: 12px;
+  font-weight: 560;
+  letter-spacing: 0;
+}
+
+.code-block figcaption button:hover {
+  border-color: #596274;
+  color: #ffffff;
+}
+
+.code-block figcaption span:first-child {
+  color: #c7ceda;
+  font-weight: 500;
+}
+
+.code-block figcaption span + span::before {
+  margin-right: 10px;
+  color: #555d6c;
+  content: "·";
+}
+
+.code-block pre {
+  max-width: 100%;
+  margin: 0;
+  padding: 23px 24px 25px;
+  overflow-x: auto;
+  overscroll-behavior-inline: contain;
+}
+
+.code-block code {
+  display: block;
+  min-width: max-content;
+  background: none;
+  color: inherit;
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 14px;
+  font-weight: 400;
+  line-height: 1.72;
+  tab-size: 4;
+  white-space: pre;
+}
+
+.data-table-wrap {
+  width: min(58rem, calc(100% + 12rem));
+  margin: 37px 0 40px 50%;
+  overflow-x: auto;
+  border-top: 1px solid var(--line-strong);
+  border-bottom: 1px solid var(--line-strong);
+  transform: translateX(-50%);
+}
+
+.data-table-wrap table {
+  width: 100%;
+  min-width: 780px;
+  border-collapse: collapse;
+  color: var(--ink-soft);
+  font-size: 14px;
+  text-align: left;
+}
+
+.data-table-wrap caption {
+  padding: 0 0 13px;
+  color: var(--muted);
+  font-size: 12px;
+  font-weight: 650;
+  letter-spacing: 0.06em;
+  text-align: left;
+  text-transform: uppercase;
+}
+
+.data-table-wrap th,
+.data-table-wrap td {
+  padding: 16px 17px;
+  border-bottom: 1px solid var(--line);
+  vertical-align: top;
+}
+
+.data-table-wrap thead th {
+  background: #f0f0ed;
+  color: var(--ink);
+  font-size: 13px;
+  font-weight: 650;
+}
+
+.data-table-wrap tbody tr:last-child th,
+.data-table-wrap tbody tr:last-child td {
+  border-bottom: 0;
+}
+
+.data-table-wrap tbody th {
+  color: var(--ink);
+  font-weight: 580;
+}
+
+.status {
+  font-size: 13px;
+  font-weight: 650;
+}
+
+.status--warning {
+  color: var(--warning);
+}
+
+.status--evidence {
+  color: var(--evidence);
+}
+
+.callout {
+  width: min(var(--body-copy), 100%);
+  margin: 35px auto 39px;
+  padding: 20px 24px;
+  border-left: 3px solid var(--warning);
+  border-radius: 0 6px 6px 0;
+  background: var(--warning-soft);
+}
+
+.callout p {
+  margin: 0;
+  color: var(--ink-soft);
+  font-size: 16px;
+  line-height: 1.7;
+}
+
+.callout .callout-label {
+  margin-bottom: 5px;
+  color: var(--warning);
+  font-size: 12px;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+}
+
+.evidence-figure {
+  width: min(61rem, calc(100% + 15rem));
+  margin: 43px 0 42px 50%;
+  transform: translateX(-50%);
+}
+
+.evidence-image-button {
+  position: relative;
+  display: block;
+  width: 100%;
+  padding: 0;
+  overflow: hidden;
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  background: var(--paper);
+  cursor: zoom-in;
+  text-align: left;
+}
+
+.evidence-image-button img {
+  display: block;
+  width: 100%;
+  height: auto;
+}
+
+.evidence-image-button > span {
+  position: absolute;
+  right: 14px;
+  bottom: 14px;
+  display: inline-flex;
+  min-height: 34px;
+  align-items: center;
+  padding: 0 11px;
+  border: 1px solid rgba(200, 203, 207, 0.9);
+  border-radius: 5px;
+  background: rgba(252, 252, 251, 0.92);
+  color: var(--muted);
+  font-size: 12px;
+  font-weight: 620;
+  opacity: 0;
+  transition: opacity 120ms ease;
+}
+
+.evidence-image-button:hover > span,
+.evidence-image-button:focus-visible > span {
+  opacity: 1;
+}
+
+.evidence-figure figcaption {
+  margin-top: 12px;
+  color: var(--muted);
+  font-size: 13px;
+  line-height: 1.55;
+}
+
+.document-body blockquote {
+  margin: 42px 0 0;
+  padding: 26px 0 0;
+  border-top: 1px solid var(--line-strong);
+  color: var(--ink);
+  font-size: 21px;
+  font-weight: 530;
+  letter-spacing: -0.018em;
+  line-height: 1.68;
+}
+
+.document-relations {
+  margin-top: 112px !important;
+  padding-top: 34px;
+  border-top: 1px solid var(--line-strong);
+}
+
+.document-relations h2 {
+  margin: 10px 0 23px;
+  font-size: 32px;
+}
+
+.document-relations li {
+  border-top: 1px solid var(--line);
+}
+
+.document-relations li:last-child {
+  border-bottom: 1px solid var(--line);
+}
+
+.document-relations a {
+  display: grid;
+  grid-template-columns: 150px minmax(0, 1fr) 20px;
+  gap: 20px;
+  align-items: center;
+  min-height: 92px;
+}
+
+.document-relations a > span:first-child {
+  color: var(--muted);
+  font-size: 13px;
+  font-weight: 560;
+}
+
+.document-relations strong {
+  color: var(--ink);
+  font-size: 16px;
+  font-weight: 600;
+  line-height: 1.5;
+}
+
+.document-relations a > span:last-child {
+  color: var(--faint);
+}
+
+.document-relations a:hover strong {
+  color: var(--signal);
+}
+
+.document-toc {
+  position: sticky;
+  top: 28px;
+  padding-top: 3px;
+}
+
+.document-toc > p {
+  margin: 0 0 14px;
+  color: var(--faint);
+  font-size: 12px;
+  font-weight: 650;
+  letter-spacing: 0.06em;
+}
+
+.document-toc nav {
+  display: flex;
+  flex-direction: column;
+}
+
+.document-toc a {
+  padding: 7px 0 7px 14px;
+  border-left: 1px solid var(--line);
+  color: var(--faint);
+  font-size: 12.5px;
+  line-height: 1.45;
+}
+
+.document-toc a:hover {
+  color: var(--ink);
+}
+
+.document-toc a[aria-current="location"] {
+  border-left: 2px solid var(--signal);
+  color: var(--signal);
+  font-weight: 620;
+}
+
+.mobile-toc-wrap {
+  display: none;
+}
+
+/* Dialogs */
+
+.visually-hidden {
+  position: absolute !important;
+  width: 1px !important;
+  height: 1px !important;
+  padding: 0 !important;
+  overflow: hidden !important;
+  clip: rect(0, 0, 0, 0) !important;
+  white-space: nowrap !important;
+  border: 0 !important;
+}
+
+dialog {
+  color: var(--ink);
+}
+
+dialog::backdrop {
+  background: rgba(23, 24, 27, 0.44);
+  backdrop-filter: blur(2px);
+}
+
+.search-dialog {
+  position: fixed;
+  inset: 0;
+  margin: auto;
+  width: min(720px, calc(100% - 40px));
+  max-height: min(760px, calc(100vh - 56px));
+  padding: 0;
+  overflow: hidden;
+  border: 1px solid var(--line-strong);
+  border-radius: 9px;
+  background: var(--paper);
+  box-shadow: 0 28px 90px rgba(19, 22, 28, 0.25);
+}
+
+.search-dialog-inner {
+  display: flex;
+  max-height: min(760px, calc(100vh - 56px));
+  flex-direction: column;
+  padding: 27px 28px 22px;
+}
+
+.search-dialog header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 28px;
+}
+
+.search-dialog h2 {
+  margin: 7px 0 0;
+  font-size: 26px;
+  font-weight: 650;
+  letter-spacing: -0.035em;
+}
+
+.dialog-close {
+  min-width: 52px;
+  min-height: 44px;
+  padding: 0 12px;
+  border: 1px solid var(--line);
+  border-radius: 6px;
+  background: transparent;
+  color: var(--muted);
+  cursor: pointer;
+  font-size: 13px;
+  font-weight: 580;
+}
+
+.dialog-close:hover {
+  border-color: var(--line-strong);
+  color: var(--ink);
+}
+
+.search-field {
+  display: flex;
+  min-height: 56px;
+  align-items: center;
+  gap: 11px;
+  margin-top: 24px;
+  padding: 0 16px;
+  border: 1px solid var(--line-strong);
+  border-radius: 7px;
+  background: #ffffff;
+  color: var(--faint);
+}
+
+.search-field:focus-within {
+  border-color: var(--signal);
+  box-shadow: 0 0 0 3px var(--signal-soft);
+}
+
+.search-field input {
+  width: 100%;
+  min-width: 0;
+  border: 0;
+  outline: 0;
+  background: transparent;
+  color: var(--ink);
+  font-size: 16px;
+}
+
+.search-field input::placeholder {
+  color: var(--faint);
+}
+
+.search-count {
+  margin: 15px 0 8px;
+  color: var(--faint);
+  font-size: 12px;
+  font-weight: 560;
+}
+
+.search-results {
+  margin: 0;
+  padding: 0;
+  overflow-y: auto;
+  border-top: 1px solid var(--line);
+  list-style: none;
+}
+
+.search-results li {
+  border-bottom: 1px solid var(--line);
+}
+
+.search-results a {
+  display: grid;
+  grid-template-columns: 94px minmax(0, 1fr);
+  gap: 4px 18px;
+  padding: 17px 3px 18px;
+}
+
+.search-results a > span {
+  grid-row: 1 / span 2;
+  padding-top: 3px;
+  color: var(--faint);
+  font-size: 11px;
+  font-weight: 680;
+  letter-spacing: 0.055em;
+}
+
+.search-results strong {
+  color: var(--ink);
+  font-size: 15px;
+  font-weight: 620;
+  line-height: 1.45;
+}
+
+.search-results p {
+  margin: 2px 0 0;
+  color: var(--muted);
+  font-size: 13px;
+  line-height: 1.5;
+}
+
+.search-results a:hover strong {
+  color: var(--signal);
+}
+
+.search-all-link {
+  display: flex;
+  min-height: 50px;
+  align-items: center;
+  justify-content: space-between;
+  margin-top: 14px;
+  padding: 0 2px;
+  border-top: 1px solid var(--line);
+  color: var(--signal);
+  font-size: 13px;
+  font-weight: 620;
+}
+
+.search-empty {
+  margin: 0;
+  padding: 46px 0 54px;
+  border-top: 1px solid var(--line);
+  color: var(--muted);
+  font-size: 14px;
+  text-align: center;
+}
+
+.figure-dialog {
+  width: min(1180px, calc(100% - 48px));
+  max-width: none;
+  padding: 0;
+  overflow: hidden;
+  border: 1px solid var(--line-strong);
+  border-radius: 9px;
+  background: var(--paper);
+  box-shadow: 0 30px 100px rgba(19, 22, 28, 0.28);
+}
+
+.figure-dialog > div {
+  position: relative;
+  padding: 54px 34px 24px;
+}
+
+.figure-dialog .dialog-close {
+  position: absolute;
+  top: 12px;
+  right: 14px;
+}
+
+.figure-dialog img {
+  display: block;
+  width: 100%;
+  height: auto;
+}
+
+.figure-dialog p {
+  margin: 12px 0 0;
+  color: var(--muted);
+  font-size: 13px;
+}
+
+/* Scope and error support screens */
+
+.scope-boundary,
+.fatal-state {
+  max-width: 760px;
+  min-height: calc(100vh - 249px);
+  padding-top: 128px;
+  padding-bottom: 128px;
+}
+
+.scope-boundary h1,
+.fatal-state h1 {
+  max-width: 700px;
+  margin: 17px 0 22px;
+  font-size: clamp(38px, 5vw, 52px);
+  font-weight: 650;
+  letter-spacing: -0.048em;
+  line-height: 1.2;
+}
+
+.scope-boundary > p:not(.context-label),
+.fatal-state > p:not(.context-label) {
+  max-width: 650px;
+  margin: 0;
+  color: var(--muted);
+  font-size: 18px;
+  line-height: 1.75;
+}
+
+.fatal-state .trace-id {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px 14px;
+  margin-top: 24px !important;
+  font-size: 13px !important;
+}
+
+.fatal-state .trace-id span {
+  color: var(--faint);
+  font-weight: 600;
+}
+
+.fatal-state .trace-id code { color: var(--ink-soft); }
+
+.primary-link {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  margin-top: 34px;
+  padding: 0 17px;
+  border: 1px solid var(--line-strong);
+  border-radius: 6px;
+  background: var(--paper);
+  color: var(--ink);
+  font-size: 14px;
+  font-weight: 620;
+}
+
+.primary-link:hover {
+  border-color: var(--signal);
+  color: var(--signal);
+}
+
+@media (max-width: 1179px) {
+  .shell {
+    width: calc(100% - 64px);
+  }
+
+  .focus-content {
+    gap: 54px;
+  }
+
+  .latest-row {
+    grid-template-columns: 140px minmax(0, 1fr) 24px;
+  }
+
+  .latest-context {
+    display: none;
+  }
+
+  .latest-mobile-meta {
+    display: block;
+    color: var(--faint) !important;
+    font-size: 13px !important;
+  }
+
+  .case-header {
+    max-width: calc(100% - 64px);
+  }
+
+  .document-layout {
+    display: block;
+  }
+
+  .document-toc {
+    display: none;
+  }
+
+  .code-block,
+  .data-table-wrap {
+    width: min(58rem, calc(100vw - 64px));
+    margin-left: 50%;
+    transform: translateX(-50%);
+  }
+
+  .evidence-figure {
+    width: min(61rem, calc(100vw - 64px));
+    margin-left: 50%;
+    transform: translateX(-50%);
+  }
+
+  .mobile-toc-wrap {
+    display: block;
+    margin-bottom: 62px;
+  }
+
+  .mobile-toc {
+    width: min(100%, var(--body-copy));
+    margin-inline: auto;
+    border-top: 1px solid var(--line);
+    border-bottom: 1px solid var(--line);
+  }
+
+  .mobile-toc summary {
+    min-height: 52px;
+    padding: 14px 0;
+    color: var(--muted);
+    cursor: pointer;
+    font-size: 13px;
+    font-weight: 580;
+  }
+
+  .mobile-toc nav {
+    display: grid;
+    gap: 3px;
+    padding: 0 0 16px;
+  }
+
+  .mobile-toc a {
+    min-height: 44px;
+    padding: 8px 12px;
+    color: var(--muted);
+    font-size: 13px;
+  }
+
+  .mobile-toc a:hover {
+    color: var(--signal);
+  }
+}
+
+@media (max-width: 1050px) {
+  .header-inner { gap: 18px; }
+  .header-menu-zone .desktop-nav { display: none; }
+  .header-menu-zone .mobile-nav { position: relative; display: block; }
+  .header-menu-zone .mobile-nav summary {
+    display: inline-flex;
+    min-width: 48px;
+    min-height: 44px;
+    align-items: center;
+    justify-content: flex-end;
+    color: var(--muted);
+    cursor: pointer;
+    font-size: 14px;
+    font-weight: 580;
+    list-style: none;
+  }
+  .header-menu-zone .mobile-nav summary::-webkit-details-marker { display: none; }
+  .header-menu-zone .mobile-nav[open] summary { color: var(--ink); }
+  .header-menu-zone .mobile-nav nav {
+    position: absolute;
+    z-index: 20;
+    top: 48px;
+    right: 0;
+    display: grid;
+    width: min(260px, calc(100vw - 40px));
+    padding: 10px;
+    border: 1px solid var(--line);
+    border-radius: 8px;
+    background: var(--paper);
+  }
+  .header-menu-zone .mobile-nav nav a {
+    display: flex;
+    min-height: 44px;
+    align-items: center;
+    padding: 0 11px;
+    color: var(--muted);
+    font-size: 14px;
+  }
+  .header-menu-zone .mobile-nav nav a[aria-current="page"] { border-left: 2px solid var(--signal); color: var(--ink); font-weight: 650; }
+}
+
+@media (max-width: 767px) {
+  .shell,
+  .case-header {
+    width: calc(100% - 40px);
+    max-width: none;
+  }
+
+  .header-inner {
+    min-height: 68px;
+    grid-template-columns: minmax(0, 1fr) auto;
+    gap: 16px;
+  }
+
+  .desktop-nav {
+    display: none;
+  }
+
+  .header-search-zone .search-button { min-width: 48px; justify-content: center; }
+
+  .home-identity {
+    padding-top: 80px;
+    padding-bottom: 94px;
+  }
+
+  .home-identity h1 {
+    margin-top: 15px;
+    margin-bottom: 19px;
+    font-size: 38px;
+    line-height: 1.08;
+  }
+
+  .identity-statement {
+    font-size: 20px;
+    line-height: 1.58;
+  }
+
+  .identity-link {
+    margin-top: 27px;
+  }
+
+  .focus-section {
+    padding-top: 28px;
+    padding-bottom: 34px;
+  }
+
+  .focus-tabs-static,
+  .focus-tabs {
+    gap: 21px;
+    overflow-x: auto;
+    font-size: 13px;
+    white-space: nowrap;
+  }
+
+  .focus-tabs button {
+    min-height: 44px;
+    flex: 0 0 auto;
+    font-size: 13px;
+  }
+
+  .focus-content {
+    display: block;
+    padding-top: 27px;
+  }
+
+  .focus-summary h2 {
+    font-size: 28px;
+    line-height: 1.28;
+  }
+
+  .focus-summary > p {
+    margin-top: 13px;
+    font-size: 16px;
+    line-height: 1.7;
+  }
+
+  .focus-details {
+    margin-top: 24px;
+  }
+
+  .focus-details div {
+    grid-template-columns: 76px 1fr;
+    gap: 14px;
+  }
+
+  .latest-section,
+  .explore-section {
+    padding-top: 92px;
+  }
+
+  .section-heading-row {
+    align-items: flex-start;
+    padding-bottom: 23px;
+  }
+
+  .section-heading-row h2 {
+    margin-top: 9px;
+    font-size: 26px;
+  }
+
+  .section-action {
+    display: none;
+  }
+
+  .latest-row {
+    display: block;
+    position: relative;
+    padding: 25px 28px 27px 0;
+  }
+
+  .latest-time {
+    flex-direction: row;
+    gap: 9px;
+    padding: 0 0 9px;
+    font-size: 12px;
+  }
+
+  .latest-time span::after {
+    margin-left: 9px;
+    color: var(--line-strong);
+    content: "·";
+  }
+
+  .latest-copy h3 {
+    font-size: 18px;
+    line-height: 1.48;
+  }
+
+  .latest-copy > p {
+    margin-top: 7px;
+    font-size: 14px;
+  }
+
+  .latest-arrow {
+    position: absolute;
+    top: 26px;
+    right: 2px;
+    opacity: 1;
+    transform: none;
+  }
+
+  .explore-section {
+    padding-bottom: 100px;
+  }
+
+  .explore-list a {
+    min-height: 88px;
+    grid-template-columns: minmax(0, 1fr) 18px;
+    gap: 15px;
+    padding: 14px 0;
+    font-size: 16px;
+    line-height: 1.55;
+  }
+
+  .explore-list strong {
+    grid-row: 2;
+    font-size: 12px;
+  }
+
+  .explore-list a > span:last-child {
+    grid-row: 1 / span 2;
+    grid-column: 2;
+    opacity: 1;
+    transform: none;
+  }
+
+  .footer-inner {
+    min-height: 204px;
+    flex-direction: column;
+    align-items: flex-start;
+    justify-content: center;
+    gap: 23px;
+  }
+
+  .footer-links {
+    flex-direction: column;
+    gap: 7px;
+  }
+
+  .case-header {
+    padding-top: 70px;
+    padding-bottom: 48px;
+  }
+
+  .case-breadcrumb {
+    margin-bottom: 22px;
+    font-size: 12px;
+  }
+
+  .case-header h1 {
+    font-size: 34px;
+    letter-spacing: -0.045em;
+    line-height: 1.2;
+  }
+
+  .case-summary {
+    margin-top: 20px;
+    font-size: 18px;
+    line-height: 1.62;
+  }
+
+  .case-snapshot {
+    display: block;
+    margin-top: 39px;
+  }
+
+  .case-snapshot > div {
+    padding: 23px 0 25px;
+  }
+
+  .case-snapshot > div + div {
+    padding: 23px 0 25px;
+    border-top: 1px solid var(--line);
+    border-left: 0;
+  }
+
+  .case-snapshot > div > p:last-child {
+    font-size: 16px;
+  }
+
+  .case-meta {
+    display: block;
+    margin-top: 22px;
+  }
+
+  .case-meta div {
+    display: grid;
+    grid-template-columns: 76px 1fr;
+    gap: 12px;
+    margin-bottom: 8px;
+  }
+
+  .case-meta dt {
+    margin: 0;
+  }
+
+  .mobile-toc-wrap {
+    margin-bottom: 50px;
+  }
+
+  .document-body {
+    width: 100%;
+  }
+
+  .document-body h2 {
+    margin-top: 3em;
+    font-size: 26px;
+    line-height: 1.32;
+  }
+
+  .document-body > section > p,
+  .document-body > section > ol {
+    font-size: 17px;
+    line-height: 1.72;
+  }
+
+  .heading-anchor > span {
+    display: none;
+  }
+
+  .code-block,
+  .data-table-wrap,
+  .evidence-figure {
+    width: 100%;
+    margin-right: 0;
+    margin-left: 0;
+    transform: none;
+  }
+
+  .code-block {
+    margin-top: 30px;
+    margin-bottom: 31px;
+  }
+
+  .code-block pre {
+    padding: 20px;
+  }
+
+  .code-block code {
+    font-size: 13.5px;
+    line-height: 1.65;
+  }
+
+  .data-table-wrap {
+    margin-top: 31px;
+    margin-bottom: 32px;
+  }
+
+  .callout {
+    margin-top: 30px;
+    margin-bottom: 32px;
+    padding: 18px 19px;
+  }
+
+  .evidence-figure {
+    margin-top: 33px;
+    margin-bottom: 34px;
+  }
+
+  .evidence-image-button img {
+    width: 100%;
+    height: auto;
+  }
+
+  .evidence-image-button > span {
+    position: static;
+    width: 100%;
+    min-height: 44px;
+    justify-content: flex-end;
+    padding-inline: 13px;
+    border-width: 1px 0 0;
+    border-radius: 0;
+    background: var(--paper);
+    opacity: 1;
+  }
+
+  .document-body blockquote {
+    margin-top: 34px;
+    padding-top: 21px;
+    font-size: 19px;
+    line-height: 1.65;
+  }
+
+  .document-relations {
+    margin-top: 86px !important;
+    padding-top: 27px;
+  }
+
+  .document-relations h2 {
+    margin-top: 8px;
+    font-size: 28px;
+  }
+
+  .document-relations a {
+    display: block;
+    position: relative;
+    min-height: 0;
+    padding: 20px 28px 21px 0;
+  }
+
+  .document-relations a > span:first-child {
+    display: block;
+    margin-bottom: 5px;
+    font-size: 12px;
+  }
+
+  .document-relations strong {
+    display: block;
+    font-size: 15px;
+  }
+
+  .document-relations a > span:last-child {
+    position: absolute;
+    top: 23px;
+    right: 2px;
+  }
+
+  .document-layout {
+    padding-bottom: 100px;
+  }
+
+  .scope-boundary,
+  .fatal-state {
+    min-height: calc(100vh - 273px);
+    padding-top: 88px;
+    padding-bottom: 88px;
+  }
+
+  .scope-boundary h1,
+  .fatal-state h1 {
+    font-size: 36px;
+  }
+
+  .scope-boundary > p:not(.context-label),
+  .fatal-state > p:not(.context-label) {
+    font-size: 16px;
+  }
+
+  .search-dialog {
+    width: calc(100% - 24px);
+    max-height: calc(100vh - 24px);
+  }
+
+  .search-dialog-inner {
+    max-height: calc(100vh - 24px);
+    padding: 22px 18px 16px;
+  }
+
+  .search-results a {
+    display: block;
+    padding: 15px 2px 16px;
+  }
+
+  .search-results a > span {
+    display: block;
+    padding: 0 0 4px;
+  }
+
+  .search-results p {
+    margin-top: 4px;
+  }
+
+  .figure-dialog {
+    width: calc(100% - 20px);
+  }
+
+  .figure-dialog > div {
+    padding: 54px 12px 16px;
+    overflow-x: auto;
+    overscroll-behavior-inline: contain;
+  }
+
+  .figure-dialog img {
+    width: 1080px;
+    max-width: none;
+  }
+}
+
+.release-index-list { margin: 70px 0 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
+.release-index-list > li { border-bottom: 1px solid var(--line); }
+.release-index-list a { display: grid; min-height: 150px; grid-template-columns: 150px minmax(0, 1fr) 24px; gap: 28px; padding: 30px 0 33px; }
+.release-index-list a > div:first-child { display: grid; align-content: start; gap: 5px; }
+.release-version { font-family: "IBM Plex Mono", monospace; font-size: 13px; font-weight: 620; }
+.release-index-list time { color: var(--faint); font-size: 10px; }
+.release-index-list h2 { margin: 0; font-size: 23px; font-weight: 640; letter-spacing: -0.03em; }
+.release-index-list p { max-width: 760px; margin: 9px 0 0; color: var(--muted); font-size: 14px; }
+.release-index-list a > span:last-child { color: var(--faint); }
+.release-index-list a:hover h2 { color: var(--signal); }
+
+.release-page { padding-top: 83px; padding-bottom: 120px; }
+.release-page-header { max-width: 940px; }
+.release-page-header nav { display: flex; gap: 9px; margin-bottom: 30px; color: var(--faint); font-size: 12px; }
+.release-page-header nav a:hover { color: var(--signal); }
+.release-page-header h1 { margin: 14px 0 17px; font-size: clamp(42px, 5vw, 52px); font-weight: 660; letter-spacing: -0.052em; line-height: 1.13; }
+.release-page-header > p:not(.section-kicker) { max-width: 780px; margin: 0; color: var(--ink-soft); font-size: 19px; line-height: 1.72; }
+.release-page-header > time { display: block; margin-top: 28px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.release-document { margin-top: 72px; border-top: 1px solid var(--line-strong); }
+.release-document > section { display: grid; grid-template-columns: 120px minmax(0, 700px); gap: 42px; padding: 53px 0 58px; border-bottom: 1px solid var(--line); }
+.release-section-number { margin: 4px 0 0; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.release-document h2 { margin: 0 0 20px; font-size: 29px; font-weight: 650; letter-spacing: -0.038em; }
+.release-document ul { margin: 0; padding-left: 20px; }
+.release-document li { color: var(--ink-soft); font-size: 16px; line-height: 1.8; }
+.release-document li + li { margin-top: 8px; }
+.release-related-links { padding: 0 !important; border-top: 1px solid var(--line); list-style: none; }
+.release-related-links li { margin: 0 !important; border-bottom: 1px solid var(--line); }
+.release-related-links a { display: flex; min-height: 62px; align-items: center; justify-content: space-between; gap: 20px; font-size: 14px; font-weight: 590; }
+.release-related-links a:hover { color: var(--signal); }
+
+.profile-page { padding-top: 98px; padding-bottom: 120px; }
+.profile-header { max-width: 850px; padding-bottom: 88px; }
+.profile-header h1 { margin: 15px 0 20px; font-size: clamp(48px, 5vw, 56px); font-weight: 670; letter-spacing: -0.055em; line-height: 1.05; }
+.profile-header > p:last-child { max-width: 760px; margin: 0; color: var(--ink-soft); font-size: clamp(22px, 2.4vw, 28px); line-height: 1.55; letter-spacing: -0.025em; }
+.profile-principles,
+.profile-projects { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 80px; padding: 65px 0 70px; border-top: 1px solid var(--line-strong); }
+.profile-principles h2,
+.profile-projects h2,
+.profile-topics h2 { margin: 11px 0 0; font-size: 27px; font-weight: 650; letter-spacing: -0.035em; }
+.profile-principles ol,
+.profile-projects ul { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
+.profile-principles li { display: grid; grid-template-columns: 34px 1fr; gap: 16px; padding: 22px 0 25px; border-bottom: 1px solid var(--line); }
+.profile-principles li > span { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.profile-principles h3 { margin: 0; font-size: 17px; font-weight: 630; }
+.profile-principles li p { margin: 7px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
+.profile-projects li { border-bottom: 1px solid var(--line); }
+.profile-projects a { position: relative; display: block; min-height: 98px; padding: 20px 34px 22px 0; }
+.profile-projects a > div { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
+.profile-projects strong { font-size: 18px; font-weight: 630; }
+.profile-projects div span { color: var(--faint); font-size: 10px; }
+.profile-projects p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
+.profile-projects a > span:last-child { position: absolute; top: 25px; right: 0; color: var(--faint); }
+.profile-projects a:hover strong { color: var(--signal); }
+.profile-topics { padding-top: 60px; border-top: 1px solid var(--line-strong); }
+.profile-topics ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
+.profile-topics li { padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 12px; }
+
+.search-page { padding-top: 92px; padding-bottom: 120px; }
+.search-page-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; max-width: 760px; margin-top: 48px; }
+.search-page-form label { display: block; }
+.search-page-form input { width: 100%; min-height: 52px; padding: 0 16px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font-size: 16px; }
+.search-page-form input:focus { border-color: var(--signal); outline: 0; box-shadow: 0 0 0 3px var(--signal-soft); }
+.search-page-form button { min-height: 52px; padding: 0 24px; border: 1px solid var(--ink); border-radius: 5px; background: var(--ink); color: #fff; cursor: pointer; font-weight: 620; }
+.search-page-results { margin: 0; padding: 0; list-style: none; }
+.search-page-results > li { border-bottom: 1px solid var(--line); }
+.search-page-results a { display: grid; min-height: 126px; grid-template-columns: 110px minmax(0, 1fr) 24px; gap: 24px; padding: 25px 0 28px; }
+.search-page-results a > span:first-child { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; text-transform: uppercase; }
+.search-page-results strong { font-size: 18px; font-weight: 630; }
+.search-page-results p { max-width: 720px; margin: 6px 0 5px; color: var(--muted); font-size: 14px; }
+.search-page-results small { color: var(--faint); font-size: 11px; }
+.search-page-results a:hover strong { color: var(--signal); }
+
+@media (max-width: 767px) {
+  .release-index-list { margin-top: 50px; }
+  .release-index-list a { grid-template-columns: 90px minmax(0, 1fr); gap: 16px; padding: 25px 0 28px; }
+  .release-index-list a > span:last-child { display: none; }
+  .release-index-list h2 { font-size: 20px; }
+  .release-page { padding-top: 57px; padding-bottom: 90px; }
+  .release-page-header h1 { font-size: 38px; }
+  .release-page-header > p:not(.section-kicker) { font-size: 17px; }
+  .release-document { margin-top: 55px; }
+  .release-document > section { grid-template-columns: 27px minmax(0, 1fr); gap: 11px; padding: 39px 0 43px; }
+  .release-document h2 { font-size: 26px; }
+  .release-document li { font-size: 15px; }
+  .profile-page { padding-top: 66px; padding-bottom: 90px; }
+  .profile-header { padding-bottom: 62px; }
+  .profile-header h1 { font-size: 44px; }
+  .profile-header > p:last-child { font-size: 21px; }
+  .profile-principles,
+  .profile-projects { display: block; padding: 48px 0 55px; }
+  .profile-principles ol,
+  .profile-projects ul { margin-top: 28px; }
+  .search-page { padding-top: 60px; padding-bottom: 90px; }
+  .search-page-form { grid-template-columns: 1fr; margin-top: 38px; }
+  .search-page-results a { grid-template-columns: 1fr auto; gap: 7px 12px; padding: 22px 0; }
+  .search-page-results a > span:first-child { grid-column: 1; }
+  .search-page-results a > div { grid-column: 1 / -1; grid-row: 2; }
+  .search-page-results a > span:last-child { grid-column: 2; grid-row: 1; }
+}
+
+.project-index-list { margin: 70px 0 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
+.project-index-list > li { border-bottom: 1px solid var(--line); }
+.project-index-list > li > a { display: grid; min-height: 210px; grid-template-columns: 42px minmax(0, 1fr) 24px; gap: 24px; padding: 34px 0 37px; }
+.project-index-list > li > a > span { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.project-index-title { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
+.project-index-title h2 { margin: 0; font-size: 28px; font-weight: 650; letter-spacing: -0.04em; }
+.project-index-title span { padding: 4px 8px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 10px; font-weight: 650; }
+.project-index-list p { max-width: 760px; margin: 10px 0 19px; color: var(--muted); }
+.project-index-list dl { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin: 0; }
+.project-index-list dl div { display: grid; grid-template-columns: 72px 1fr; gap: 10px; font-size: 12px; }
+.project-index-list dt { color: var(--faint); }
+.project-index-list dd { margin: 0; color: var(--ink-soft); }
+.project-index-list a:hover h2 { color: var(--signal); }
+
+.project-page { padding-top: 85px; padding-bottom: 120px; }
+.project-page-header { max-width: 980px; }
+.project-breadcrumb { display: flex; gap: 9px; margin: 0 0 27px; color: var(--faint); font-size: 12px; }
+.project-breadcrumb a:hover { color: var(--signal); }
+.project-page-header h1 { margin: 0; font-size: clamp(42px, 5vw, 52px); font-weight: 660; letter-spacing: -0.052em; line-height: 1.13; }
+.project-page-header > p:not(.project-breadcrumb) { max-width: 800px; margin: 17px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.72; }
+.project-navigation { display: flex; gap: 28px; margin-top: 46px; border-bottom: 1px solid var(--line-strong); }
+.project-navigation a { position: relative; display: inline-flex; min-height: 48px; align-items: center; color: var(--muted); font-size: 13px; font-weight: 560; }
+.project-navigation a[aria-current="page"] { color: var(--ink); }
+.project-navigation a[aria-current="page"]::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--signal); content: ""; }
+
+.project-thesis { max-width: 850px; margin-top: 76px; }
+.project-thesis h2 { margin: 12px 0 15px; font-size: 29px; font-weight: 650; letter-spacing: -0.038em; }
+.project-thesis > p:last-child { margin: 0; color: var(--ink-soft); font-size: 20px; line-height: 1.72; }
+.project-status-grid { display: grid; grid-template-columns: 0.55fr 1.25fr 1.2fr; margin: 58px 0 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.project-status-grid > div { padding: 23px 28px 25px 0; }
+.project-status-grid > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
+.project-status-grid dt { color: var(--faint); font-size: 11px; }
+.project-status-grid dd { margin: 5px 0 0; font-size: 14px; font-weight: 590; }
+.project-overview-section { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; align-items: start; margin-top: 83px; }
+.project-overview-section h2,
+.project-topics h2 { margin: 11px 0 0; font-size: 28px; font-weight: 650; letter-spacing: -0.035em; }
+.project-stat-links { border-top: 1px solid var(--line-strong); }
+.project-stat-links a { display: grid; min-height: 74px; grid-template-columns: 45px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
+.project-stat-links strong { font-family: "IBM Plex Mono", monospace; font-size: 19px; }
+.project-stat-links span { color: var(--muted); font-size: 14px; }
+.project-stat-links a:hover span { color: var(--signal); }
+.project-topics { margin-top: 80px; padding-top: 34px; border-top: 1px solid var(--line); }
+.project-topics ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
+.project-topics li { padding: 7px 10px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 12px; }
+
+.project-decision-list,
+.project-activity-list { margin: 72px 0 0; padding: 0; list-style: none; }
+.project-decision-list > li + li { margin-top: 86px; }
+.project-decision-list article { scroll-margin-top: 24px; padding-top: 35px; border-top: 1px solid var(--line-strong); }
+.project-decision-list article > header > div { display: flex; gap: 18px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.project-decision-list article > header span { color: var(--evidence); font-weight: 650; }
+.project-decision-list h2 { max-width: 850px; margin: 14px 0 9px; font-size: 31px; font-weight: 650; letter-spacing: -0.04em; }
+.project-decision-list header > p { max-width: 850px; margin: 0; color: var(--ink-soft); font-size: 18px; line-height: 1.7; }
+.project-decision-list article > section { display: grid; grid-template-columns: 150px minmax(0, 650px); gap: 40px; margin-top: 33px; padding-top: 26px; border-top: 1px solid var(--line); }
+.project-decision-list h3 { margin: 0; color: var(--faint); font-size: 12px; font-weight: 620; }
+.project-decision-list section p,
+.project-decision-list section ul { margin: 0; color: var(--ink-soft); font-size: 15px; line-height: 1.75; }
+.project-decision-list section ul { padding-left: 18px; }
+.project-decision-list section a { display: inline-flex; min-height: 44px; align-items: center; color: var(--signal); }
+
+.project-activity-list { border-top: 1px solid var(--line-strong); }
+.project-activity-list > li { border-bottom: 1px solid var(--line); }
+.project-activity-list article { display: grid; grid-template-columns: max-content minmax(0, 1fr); column-gap: 24px; scroll-margin-top: 24px; padding: 28px 0 31px; }
+.project-activity-list article > div { display: flex; grid-column: 1; grid-row: 1 / span 3; gap: 16px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; white-space: nowrap; }
+.project-activity-list article > div span { width: 95px; }
+.project-activity-list h2 { grid-column: 2; margin: 0 0 6px; font-size: 20px; font-weight: 630; letter-spacing: -0.025em; }
+.project-activity-list p { grid-column: 2; max-width: 750px; margin: 0; color: var(--muted); font-size: 14px; }
+.project-activity-list a { display: inline-flex; grid-column: 2; justify-self: start; min-height: 44px; align-items: center; margin-top: 7px; color: var(--signal); font-size: 12px; font-weight: 600; }
+
+@media (max-width: 767px) {
+  .project-index-list { margin-top: 50px; }
+  .project-index-list > li > a { grid-template-columns: 28px minmax(0, 1fr); gap: 10px; padding: 27px 0 30px; }
+  .project-index-list > li > a > span:last-child { display: none; }
+  .project-index-title { align-items: flex-start; }
+  .project-index-title h2 { font-size: 24px; }
+  .project-index-list dl { display: block; }
+  .project-index-list dl div + div { margin-top: 7px; }
+  .project-page { padding-top: 57px; padding-bottom: 90px; }
+  .project-page-header h1 { font-size: 38px; }
+  .project-page-header > p:not(.project-breadcrumb) { font-size: 16px; }
+  .project-navigation { gap: 18px; overflow-x: auto; }
+  .project-navigation a { flex: 0 0 auto; min-height: 48px; }
+  .project-thesis { margin-top: 58px; }
+  .project-thesis > p:last-child { font-size: 18px; }
+  .project-status-grid { display: block; }
+  .project-status-grid > div,
+  .project-status-grid > div + div { padding: 17px 0; border-left: 0; }
+  .project-status-grid > div + div { border-top: 1px solid var(--line); }
+  .project-overview-section { display: block; margin-top: 60px; }
+  .project-stat-links { margin-top: 30px; }
+  .project-decision-list { margin-top: 55px; }
+  .project-decision-list h2 { font-size: 27px; }
+  .project-decision-list article > section { display: block; }
+  .project-decision-list section > :last-child { margin-top: 10px; }
+  .project-activity-list article { display: block; padding: 24px 0 27px; }
+  .project-activity-list article > div { margin: 0 0 11px; }
+  .project-activity-list h2 { margin: 0 0 6px; }
+}
+
+/* Complete public information architecture */
+.public-index-page,
+.public-document-page {
+  padding-top: 92px;
+  padding-bottom: 120px;
+}
+
+.public-page-header,
+.public-document-header {
+  max-width: 920px;
+}
+
+.public-page-header h1,
+.public-document-header h1 {
+  margin: 15px 0 18px;
+  font-size: clamp(42px, 5vw, 52px);
+  font-weight: 660;
+  letter-spacing: -0.052em;
+  line-height: 1.13;
+}
+
+.public-page-header > p:last-child,
+.public-document-header > p {
+  max-width: 760px;
+  margin: 0;
+  color: var(--ink-soft);
+  font-size: 19px;
+  line-height: 1.72;
+}
+
+.public-filter-form {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr)) auto auto;
+  gap: 14px;
+  align-items: end;
+  margin-top: 54px;
+  padding: 22px 0;
+  border-top: 1px solid var(--line-strong);
+  border-bottom: 1px solid var(--line);
+}
+
+.public-filter-form label {
+  display: grid;
+  gap: 7px;
+  color: var(--muted);
+  font-size: 12px;
+  font-weight: 620;
+}
+
+.public-filter-form select {
+  min-height: 44px;
+  padding: 0 36px 0 12px;
+  border: 1px solid var(--line-strong);
+  border-radius: 4px;
+  background: var(--paper);
+  color: var(--ink);
+}
+
+.public-filter-form button,
+.public-filter-form a {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  justify-content: center;
+  padding: 0 16px;
+  border: 1px solid var(--ink);
+  border-radius: 4px;
+  background: var(--ink);
+  color: #fff;
+  cursor: pointer;
+  font-size: 13px;
+  font-weight: 620;
+}
+
+.public-filter-form a {
+  border-color: var(--line-strong);
+  background: transparent;
+  color: var(--ink);
+}
+
+.public-result-heading {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 30px;
+  margin-top: 70px;
+  padding-bottom: 17px;
+  border-bottom: 1px solid var(--line-strong);
+}
+
+.public-result-heading h2 { margin: 0; font-size: 24px; letter-spacing: -0.03em; }
+.public-result-heading p { margin: 0; color: var(--faint); font-size: 12px; }
+
+.public-record-list { margin: 0; padding: 0; list-style: none; }
+.public-record-list li { border-bottom: 1px solid var(--line); }
+.public-record-list a {
+  display: grid;
+  min-height: 126px;
+  grid-template-columns: 115px minmax(0, 1fr) 90px;
+  gap: 28px;
+  align-items: start;
+  padding: 26px 0 27px;
+}
+.public-record-list a:hover strong { color: var(--signal); }
+.record-kind { padding-top: 3px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 11px; text-transform: uppercase; }
+.public-record-list strong { display: block; font-size: 18px; font-weight: 630; letter-spacing: -0.02em; }
+.public-record-list p { max-width: 700px; margin: 7px 0 6px; color: var(--muted); font-size: 14px; line-height: 1.62; }
+.record-context { color: var(--faint); font-size: 11px; }
+.public-record-list time { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; text-align: right; }
+.public-empty-state { margin: 0; padding: 64px 0; border-bottom: 1px solid var(--line); color: var(--muted); text-align: center; }
+.public-back-link { margin-top: 34px; }
+
+.public-document-header { margin-bottom: 56px; }
+.public-document-header nav { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 27px; color: var(--faint); font-size: 12px; }
+.public-document-header nav a:hover { color: var(--signal); }
+.public-document-header dl,
+.document-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 38px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
+.public-document-header dl div,
+.document-facts div { padding: 17px 24px 18px 0; }
+.public-document-header dl div + div,
+.document-facts div + div { padding-left: 24px; border-left: 1px solid var(--line); }
+.public-document-header dt,
+.document-facts dt { color: var(--faint); font-size: 11px; }
+.public-document-header dd,
+.document-facts dd { margin: 4px 0 0; color: var(--ink-soft); font-size: 13px; }
+.document-snapshot { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.document-snapshot > div { padding: 28px 36px 31px 0; }
+.document-snapshot > div + div { padding-right: 0; padding-left: 36px; border-left: 1px solid var(--line); }
+.document-snapshot p:last-child { margin: 11px 0 0; font-size: 17px; line-height: 1.75; }
+.document-facts { grid-template-columns: 1fr 1fr; margin-top: 0; border-top: 0; }
+
+.public-document-body,
+.reference-purpose,
+.document-relations {
+  width: min(100%, var(--body-copy));
+  margin: 82px auto 0;
+}
+.public-document-body > section + section { margin-top: 76px; padding-top: 70px; border-top: 1px solid var(--line); }
+.public-document-body h2,
+.reference-purpose h2,
+.document-relations h2 { margin: 0 0 20px; font-size: 29px; font-weight: 650; letter-spacing: -0.038em; }
+.public-document-body h3 { margin: 0; font-size: 18px; font-weight: 630; }
+.public-document-body p,
+.public-document-body li,
+.reference-purpose > p:last-child { color: var(--ink-soft); font-size: 17px; line-height: 1.82; }
+.public-document-body ul { padding-left: 21px; }
+.reference-purpose { padding: 27px 0 31px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.reference-purpose h2 { margin: 12px 0 10px; }
+.reference-purpose > p:last-child { margin: 0; }
+.reference-rules,
+.question-options { margin: 0; padding: 0; list-style: none; }
+.reference-rules li { display: grid; grid-template-columns: 34px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
+.reference-rules li > span { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 10px; }
+.reference-rules p,
+.question-options p { margin: 5px 0 0; }
+.verified-at { color: var(--faint) !important; font-size: 12px !important; }
+.question-status { width: fit-content; margin: -34px 0 50px; padding: 5px 10px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 11px; font-weight: 650; }
+.question-status--open,
+.question-status--investigating { border-color: #ead8be; background: var(--warning-soft); color: var(--warning); }
+.question-status--resolved { border-color: #c8e2d9; background: var(--evidence-soft); color: var(--evidence); }
+.question-resolution { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 22px 24px; border: 1px solid #c8e2d9; background: var(--evidence-soft); }
+.question-resolution strong { max-width: 780px; font-size: 14px; }
+.question-resolution a { display: inline-flex; min-height: 44px; align-items: center; flex: 0 0 auto; color: var(--evidence); font-size: 13px; font-weight: 650; }
+.question-options li { padding: 23px 0; border-bottom: 1px solid var(--line); }
+.next-validation { padding: 28px 30px 31px !important; border: 1px solid #d7dceb !important; background: var(--signal-soft); }
+.next-validation h2 { margin: 10px 0 8px; }
+
+.document-relations { padding-top: 68px; border-top: 1px solid var(--line-strong); }
+.document-relations h2 { margin-top: 12px; }
+.document-relations ul { margin: 30px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
+.document-relations li { border-bottom: 1px solid var(--line); }
+.document-relations a { display: grid; min-height: 76px; grid-template-columns: 150px 1fr auto; gap: 18px; align-items: center; }
+.document-relations a > span:first-child { color: var(--faint); font-size: 11px; }
+.document-relations strong { font-size: 14px; font-weight: 600; }
+.document-relations a:hover strong { color: var(--signal); }
+
+@media (max-width: 900px) {
+  .public-filter-form { grid-template-columns: 1fr 1fr 1fr; }
+  .public-filter-form button,
+  .public-filter-form a { grid-row: 2; }
+}
+
+@media (max-width: 767px) {
+  .public-index-page,
+  .public-document-page { padding-top: 60px; padding-bottom: 90px; }
+  .public-page-header h1,
+  .public-document-header h1 { font-size: 38px; }
+  .public-page-header > p:last-child,
+  .public-document-header > p { font-size: 17px; }
+  .public-filter-form { grid-template-columns: 1fr; margin-top: 40px; }
+  .public-filter-form button,
+  .public-filter-form a { grid-row: auto; }
+  .public-record-list a { grid-template-columns: 1fr auto; gap: 8px 16px; padding: 22px 0; }
+  .record-kind { grid-column: 1; }
+  .public-record-list a > div { grid-column: 1 / -1; grid-row: 2; }
+  .public-record-list time { grid-column: 2; grid-row: 1; }
+  .document-snapshot { display: block; }
+  .document-snapshot > div,
+  .document-snapshot > div + div { padding: 24px 0; border-left: 0; }
+  .document-snapshot > div + div { border-top: 1px solid var(--line); }
+  .public-document-header dl,
+  .document-facts { display: block; }
+  .public-document-header dl div,
+  .public-document-header dl div + div,
+  .document-facts div,
+  .document-facts div + div { padding: 13px 0; border-left: 0; }
+  .public-document-header dl div + div,
+  .document-facts div + div { border-top: 1px solid var(--line); }
+  .public-document-body,
+  .reference-purpose,
+  .document-relations { margin-top: 58px; }
+  .public-document-body > section + section { margin-top: 55px; padding-top: 50px; }
+  .public-document-body p,
+  .public-document-body li,
+  .reference-purpose > p:last-child { font-size: 16px; }
+  .question-resolution { display: block; }
+  .question-resolution a { margin-top: 11px; }
+  .document-relations a { grid-template-columns: 1fr auto; gap: 4px 12px; padding: 15px 0; }
+  .document-relations a > span:first-child { grid-column: 1; }
+  .document-relations strong { grid-column: 1; }
+  .document-relations a > span:last-child { grid-column: 2; grid-row: 1 / span 2; }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  html {
+    scroll-behavior: auto;
+  }
+
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    transition-duration: 0.01ms !important;
+  }
+}
+
+/* Shared Studio editing patterns. */
+
+.studio-index-intro { padding-top: 112px; padding-bottom: 94px; }
+.studio-index-intro h1 { max-width: 780px; margin: 20px 0 25px; font-size: clamp(44px, 5vw, 56px); font-weight: 660; letter-spacing: -0.054em; line-height: 1.08; }
+.studio-index-intro > p:last-child { max-width: 760px; margin: 0; color: var(--ink-soft); font-size: 21px; letter-spacing: -0.022em; line-height: 1.68; }
+.studio-index-list { padding-bottom: 140px; }
+.studio-index-count { margin: 0 0 4px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 12px; }
+.studio-index-list ol { margin: 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
+.studio-index-list li { border-bottom: 1px solid var(--line); }
+.studio-index-list li > a { display: grid; grid-template-columns: 70px minmax(0, 1fr) 22px; gap: 22px; align-items: center; padding: 25px 2px 26px; }
+.studio-index-step { color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 12px; }
+.studio-index-copy { display: grid; gap: 5px; }
+.studio-index-copy strong { font-size: 18px; font-weight: 630; letter-spacing: -0.022em; }
+.studio-index-copy > span { color: var(--muted); font-size: 14px; }
+.studio-index-list li > a > span:last-child { color: var(--faint); opacity: 0; transform: translateX(-4px); transition: opacity 120ms ease, transform 120ms ease; }
+.studio-index-list li > a:hover strong { color: var(--signal); }
+.studio-index-list li > a:hover > span:last-child { opacity: 1; transform: translateX(0); }
+.studio-screen-main { min-height: calc(100vh - 188px); }
+.studio-screen-header { padding-top: 75px; padding-bottom: 54px; }
+.studio-screen-header nav { display: flex; gap: 9px; margin-bottom: 31px; color: var(--faint); font-size: 12px; }
+.studio-screen-header nav a:hover { color: var(--signal); }
+.studio-screen-header .section-kicker { margin-bottom: 13px; }
+.studio-screen-header h1 { margin: 0; font-size: clamp(38px, 4vw, 48px); font-weight: 650; letter-spacing: -0.049em; line-height: 1.14; }
+.studio-screen-header > p:not(.section-kicker) { max-width: 720px; margin: 18px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.7; }
+.studio-screen-header dl { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; margin: 38px 0 0; padding-top: 21px; border-top: 1px solid var(--line); }
+.studio-screen-header dt { margin-bottom: 4px; color: var(--faint); font-size: 11px; font-weight: 600; }
+.studio-screen-header dd { margin: 0; color: var(--muted); font-size: 13px; }
+.studio-screen-surface { min-width: 0; padding-bottom: 78px; }
+
+.studio-editor-toolbar { display: flex; min-height: 78px; align-items: center; justify-content: space-between; gap: 28px; padding: 13px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.studio-editor-toolbar p { margin: 0; font-size: 12px; }
+.studio-editor-toolbar p:first-child { color: var(--ink); font-weight: 620; }
+.studio-editor-toolbar p:last-child { margin-top: 2px; color: var(--muted); }
+.studio-editor-toolbar .is-dirty::before { margin-right: 8px; color: var(--warning); content: "●"; }
+.studio-editor-toolbar .is-saved::before { margin-right: 8px; color: var(--evidence); content: "✓"; }
+.studio-toolbar-actions, .studio-mode-tabs { display: flex; align-items: center; gap: 6px; }
+.studio-mode-tabs { margin-right: 8px; padding: 3px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); }
+.studio-mode-tabs button { min-height: 44px; padding: 0 13px; border: 0; border-radius: 4px; background: transparent; color: var(--muted); cursor: pointer; font-size: 12px; font-weight: 580; }
+.studio-mode-tabs button[aria-selected="true"] { background: var(--signal-soft); color: var(--signal); }
+.studio-editor-layout { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 72px; align-items: start; padding-top: 55px; }
+.studio-editor-form, .studio-immediate-preview { width: min(100%, 760px); }
+.studio-form-section { scroll-margin-top: 30px; }
+.studio-form-section + .studio-form-section { margin-top: 72px; padding-top: 67px; border-top: 1px solid var(--line); }
+.studio-section-heading { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 14px; align-items: start; margin-bottom: 28px; }
+.studio-section-heading .section-kicker { padding-top: 7px; color: var(--faint); font-family: "IBM Plex Mono", monospace; }
+.studio-section-heading h2 { margin: 0; font-size: 26px; font-weight: 640; letter-spacing: -0.035em; }
+.studio-section-heading div > p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
+.studio-field { display: grid; gap: 8px; margin-top: 20px; color: var(--ink-soft); font-size: 13px; font-weight: 600; }
+.studio-control { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 5px; outline: 0; background: #fff; color: var(--ink); font-size: 15px; font-weight: 430; }
+textarea.studio-control { min-height: 118px; resize: vertical; line-height: 1.65; }
+.studio-control:focus, .studio-markdown:focus { border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-soft); }
+.studio-control--mono, .studio-path-preview { font-family: "IBM Plex Mono", monospace; }
+.studio-path-preview { margin: 7px 0 0; color: var(--faint); font-size: 11px; }
+.studio-summary-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
+.studio-classification-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
+.studio-classification-grid .studio-field:last-child { grid-column: 1 / -1; }
+.studio-text-action { min-height: 44px; padding: 0; border: 0; background: transparent; color: var(--signal); cursor: pointer; font-size: 12px; font-weight: 600; }
+.studio-markdown { display: block; width: 100%; min-height: 520px; padding: 25px 26px; border: 1px solid var(--line-strong); border-radius: 5px; outline: 0; background: #fff; color: var(--ink); font-family: "IBM Plex Mono", monospace; font-size: 14px; line-height: 1.72; resize: vertical; }
+.studio-relations-editor { margin: 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
+.studio-relations-editor li { display: grid; min-height: 68px; grid-template-columns: 120px minmax(0, 1fr) auto; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
+.studio-relations-editor span { color: var(--faint); font-size: 11px; }
+.studio-relations-editor strong { font-size: 13px; font-weight: 590; }
+.studio-relations-editor button, .studio-issue button { min-height: 44px; border: 0; background: transparent; color: var(--signal); cursor: pointer; font-size: 12px; font-weight: 600; }
+
+.studio-status-rail { position: sticky; top: 28px; padding-top: 5px; }
+.studio-readiness-list { margin: 18px 0 0; padding: 0; border-top: 1px solid var(--line-strong); list-style: none; }
+.studio-readiness-list li { display: grid; grid-template-columns: 24px 1fr; gap: 2px 7px; padding: 15px 0 16px; border-bottom: 1px solid var(--line); }
+.studio-readiness-list span { grid-row: 1 / span 2; padding-top: 2px; color: var(--faint); font-family: "IBM Plex Mono", monospace; font-size: 9px; }
+.studio-readiness-list strong { font-size: 12px; font-weight: 610; }
+.studio-readiness-list small { color: var(--faint); font-size: 10px; line-height: 1.45; }
+.studio-readiness-list .is-complete span, .studio-readiness-list .is-complete strong { color: var(--evidence); }
+.studio-readiness-list .needs-attention span, .studio-readiness-list .needs-attention strong { color: var(--warning); }
+.studio-visibility-summary { margin: 22px 0; }
+.studio-visibility-summary div { display: flex; justify-content: space-between; gap: 12px; margin-top: 7px; font-size: 11px; }
+.studio-visibility-summary dt { color: var(--faint); }
+.studio-visibility-summary dd { margin: 0; color: var(--ink); font-weight: 620; }
+.studio-preview-note { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 49px; padding: 15px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); font-size: 12px; }
+.studio-preview-note span { color: var(--muted); }
+.studio-immediate-preview > h2 { margin: 15px 0 20px; font-size: 38px; font-weight: 650; letter-spacing: -0.047em; line-height: 1.17; }
+.studio-preview-lead { color: var(--ink-soft); font-size: 18px; line-height: 1.7; }
+.studio-immediate-preview section { margin-top: 58px; }
+.studio-immediate-preview h3, .studio-public-preview h3 { margin: 0 0 15px; font-size: 25px; font-weight: 630; letter-spacing: -0.032em; }
+.studio-immediate-preview section p, .studio-immediate-preview li, .studio-public-preview section p { font-size: 17px; line-height: 1.78; }
+
+.studio-single-review, .studio-conflict { width: min(100%, 900px); margin-inline: auto; padding: 53px 0 20px; border-top: 1px solid var(--line-strong); }
+.studio-single-review > header h2, .studio-conflict > header h2 { margin: 14px 0 15px; font-size: 34px; font-weight: 650; letter-spacing: -0.043em; }
+.studio-single-review > header > p:last-child, .studio-conflict > header > p:last-child { max-width: 680px; margin: 0; color: var(--muted); font-size: 16px; }
+.studio-validation-summary { display: grid; grid-template-columns: 1fr 1fr; margin-top: 51px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.studio-validation-summary div { padding: 24px 30px 25px 0; }
+.studio-validation-summary div + div { padding-right: 0; padding-left: 30px; border-left: 1px solid var(--line); }
+.studio-validation-summary span { display: block; color: var(--faint); font-size: 11px; }
+.studio-validation-summary strong { display: block; margin-top: 6px; font-size: 19px; }
+.studio-validation-summary div:first-child strong { color: #b42318; }
+.studio-validation-summary div:last-child strong { color: var(--warning); }
+.studio-validation-summary p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
+.studio-issue-group { margin-top: 57px; }
+.studio-issue-group h3 { margin: 0 0 12px; font-size: 13px; font-weight: 650; }
+.studio-issue { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 21px 20px; border-top: 1px solid var(--line); background: var(--warning-soft); }
+.studio-issue + .studio-issue { border-top-color: #f0dfc8; }
+.studio-issue--error { background: #fef3f2; }
+.studio-issue span { color: var(--warning); font-size: 10px; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; }
+.studio-issue--error span { color: #b42318; }
+.studio-issue strong { display: block; margin-top: 5px; font-size: 14px; }
+.studio-issue p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
+.studio-issue > a { flex: 0 0 auto; color: var(--signal); font-size: 12px; font-weight: 600; }
+
+.studio-public-preview { overflow: hidden; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); background: var(--paper); }
+.studio-public-preview-banner { display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 28px; padding: 12px 24px; border-bottom: 1px solid #d7dceb; background: var(--signal-soft); font-size: 11px; }
+.studio-public-preview-banner div { display: grid; gap: 2px; }
+.studio-public-preview-banner span, .studio-public-preview-banner p { margin: 0; color: var(--muted); }
+.studio-preview-case-header { width: min(100% - 80px, 920px); padding-top: 70px; }
+.studio-preview-case-header h2 { margin: 0; font-size: clamp(38px, 5vw, 48px); font-weight: 660; letter-spacing: -0.052em; line-height: 1.14; }
+.studio-preview-document { padding-bottom: 90px; }
+.studio-preview-document section + section { margin-top: 62px; }
+
+.studio-decision-sheet { width: min(100%, 640px); margin-inline: auto; padding: 50px 48px 43px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); background: var(--paper); }
+.studio-decision-sheet h2 { margin: 15px 0 17px; font-size: 37px; font-weight: 650; letter-spacing: -0.047em; }
+.studio-decision-intro { margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.7; }
+.studio-publish-comparison { margin: 38px 0 0; border-top: 1px solid var(--line-strong); }
+.studio-publish-comparison div { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 24px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
+.studio-publish-comparison dt { color: var(--faint); }
+.studio-publish-comparison dd { margin: 0; color: var(--ink); font-weight: 600; word-break: break-all; }
+.studio-change-summary { margin-top: 36px; }
+.studio-change-summary h3 { margin: 0 0 11px; font-size: 14px; }
+.studio-change-summary ul { margin: 0; padding-left: 19px; color: var(--muted); font-size: 13px; line-height: 1.9; }
+.studio-warning-check { display: flex; gap: 12px; margin-top: 33px; padding: 17px 18px; border: 1px solid #ead8be; background: var(--warning-soft); cursor: pointer; }
+.studio-warning-check input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--signal); }
+.studio-warning-check span { display: grid; gap: 3px; }
+.studio-warning-check strong { font-size: 13px; }
+.studio-warning-check small { color: var(--muted); font-size: 11px; }
+.studio-decision-actions, .studio-conflict-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 40px; }
+.studio-preserved-note, .studio-unsaved-summary { margin-top: 37px; padding: 21px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
+.studio-preserved-note strong, .studio-unsaved-summary strong { display: block; font-size: 15px; }
+.studio-preserved-note p, .studio-unsaved-summary span { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
+.studio-unsaved-summary span { display: block; margin: 0 0 5px; }
+.studio-decision-actions--three { justify-content: space-between; }
+.studio-text-danger { min-height: 44px; padding: 0 12px; border: 0; background: transparent; color: #b42318; cursor: pointer; font-size: 13px; font-weight: 600; }
+
+.studio-diff-heading { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-bottom: 13px; border-bottom: 1px solid var(--line-strong); font-size: 12px; }
+.studio-diff-heading span { color: #b42318; font-weight: 620; }
+.studio-diff-grid { display: grid; grid-template-columns: 1fr 1fr; }
+.studio-diff-grid section { min-height: 270px; padding: 27px 31px 31px 0; }
+.studio-diff-grid section + section { padding-right: 0; padding-left: 31px; border-left: 1px solid var(--line); }
+.studio-diff-grid section > p:first-child { margin: 0 0 20px; color: var(--faint); font-size: 11px; font-weight: 650; }
+.studio-diff-grid h3 { margin: 0; font-size: 18px; font-weight: 630; line-height: 1.5; }
+.studio-diff-grid h3 + p { margin: 22px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
+@media (max-width: 1179px) {
+  .studio-editor-layout { display: block; }
+  .studio-editor-form, .studio-immediate-preview { margin-inline: auto; }
+  .studio-status-rail { position: static; width: min(100%, 760px); margin: 72px auto 0; padding-top: 36px; border-top: 1px solid var(--line-strong); }
+  .studio-readiness-list { display: grid; grid-template-columns: 1fr 1fr; }
+  .studio-readiness-list li:nth-child(odd) { padding-right: 22px; }
+  .studio-readiness-list li:nth-child(even) { padding-left: 22px; border-left: 1px solid var(--line); }
+}
+
+@media (max-width: 767px) {
+  .studio-index-intro { padding-top: 78px; padding-bottom: 72px; }
+  .studio-index-intro h1 { margin-top: 15px; font-size: 38px; }
+  .studio-index-intro > p:last-child { font-size: 17px; }
+  .studio-index-list { padding-bottom: 100px; }
+  .studio-index-list li > a { grid-template-columns: 38px minmax(0, 1fr) 16px; gap: 13px; padding: 22px 0 23px; }
+  .studio-index-copy strong { font-size: 16px; }
+  .studio-index-copy > span { font-size: 13px; line-height: 1.55; }
+  .studio-index-list li > a > span:last-child { opacity: 1; transform: none; }
+  .studio-screen-header { padding-top: 55px; padding-bottom: 42px; }
+  .studio-screen-header nav { margin-bottom: 24px; }
+  .studio-screen-header h1 { font-size: 34px; }
+  .studio-screen-header > p:not(.section-kicker) { font-size: 16px; }
+  .studio-screen-header dl { display: block; margin-top: 28px; }
+  .studio-screen-header dl div { display: grid; grid-template-columns: 70px 1fr; gap: 10px; margin-top: 8px; }
+  .studio-screen-header dt { margin: 0; }
+  .studio-editor-toolbar { position: sticky; z-index: 10; top: 0; display: block; padding: 12px 0 14px; background: var(--canvas); }
+  .studio-toolbar-actions { justify-content: space-between; margin-top: 11px; }
+  .studio-mode-tabs { min-width: 0; margin: 0; }
+  .studio-mode-tabs button { min-height: 44px; padding-inline: 10px; }
+  .studio-editor-layout { padding-top: 39px; }
+  .studio-form-section + .studio-form-section { margin-top: 54px; padding-top: 50px; }
+  .studio-section-heading { grid-template-columns: 25px minmax(0, 1fr); gap: 10px; }
+  .studio-section-heading > .studio-text-action { grid-column: 2; width: fit-content; }
+  .studio-section-heading h2 { font-size: 23px; }
+  .studio-control { font-size: 16px; }
+  .studio-summary-fields, .studio-classification-grid { display: block; }
+  .studio-markdown { min-height: 440px; padding: 19px 17px; font-size: 13px; }
+  .studio-relations-editor li { grid-template-columns: 1fr auto; gap: 3px 10px; padding: 15px 0; }
+  .studio-relations-editor li span, .studio-relations-editor li strong { grid-column: 1; }
+  .studio-relations-editor li strong { line-height: 1.55; }
+  .studio-relations-editor li button { grid-row: 1 / span 2; grid-column: 2; }
+  .studio-readiness-list { display: block; }
+  .studio-readiness-list li:nth-child(odd), .studio-readiness-list li:nth-child(even) { padding-right: 0; padding-left: 0; border-left: 0; }
+  .studio-preview-note { display: grid; gap: 3px; margin-bottom: 39px; }
+  .studio-immediate-preview > h2 { font-size: 31px; }
+  .studio-preview-lead { font-size: 16px; }
+  .studio-immediate-preview section p, .studio-immediate-preview li, .studio-public-preview section p { font-size: 16px; }
+  .studio-single-review, .studio-conflict { padding-top: 40px; }
+  .studio-single-review > header h2, .studio-conflict > header h2 { font-size: 30px; }
+  .studio-validation-summary { display: block; margin-top: 39px; }
+  .studio-validation-summary div, .studio-validation-summary div + div { padding: 20px 0; border-left: 0; }
+  .studio-validation-summary div + div { border-top: 1px solid var(--line); }
+  .studio-issue { display: block; padding: 19px 17px; }
+  .studio-issue > a, .studio-issue > button { display: inline-flex; min-height: 44px; align-items: center; margin-top: 10px; }
+  .studio-public-preview-banner { display: block; padding: 14px 16px; }
+  .studio-public-preview-banner p { margin-top: 7px; line-height: 1.45; }
+  .studio-preview-case-header { width: calc(100% - 40px); padding-top: 50px; }
+  .studio-preview-case-header h2 { font-size: 32px; }
+  .studio-preview-document { padding-inline: 20px; padding-bottom: 70px; }
+  .studio-decision-sheet { width: 100%; padding: 39px 0 31px; background: transparent; }
+  .studio-decision-sheet h2 { font-size: 32px; }
+  .studio-publish-comparison div { grid-template-columns: 110px minmax(0, 1fr); gap: 14px; }
+  .studio-decision-actions, .studio-conflict-actions { flex-wrap: wrap; }
+  .studio-decision-actions--three { display: grid; grid-template-columns: 1fr 1fr; }
+  .studio-diff-heading { display: grid; gap: 4px; }
+  .studio-diff-grid { display: block; }
+  .studio-diff-grid section, .studio-diff-grid section + section { min-height: 0; padding: 23px 0; border-left: 0; }
+  .studio-diff-grid section + section { border-top: 1px solid var(--line); }
+}
diff --git a/src/features/tech-log/presentation/styles/publication-flow.module.css b/src/features/tech-log/presentation/styles/publication-flow.module.css
new file mode 100644
index 0000000..d077231
--- /dev/null
+++ b/src/features/tech-log/presentation/styles/publication-flow.module.css
@@ -0,0 +1,533 @@
+.page,
+.snapshotPage {
+  min-width: 0;
+}
+
+.heading {
+  max-width: 780px;
+  padding-bottom: 44px;
+  border-bottom: 1px solid var(--line-strong);
+}
+
+.heading h1,
+.routeState h1 {
+  margin: 0 0 16px;
+  font-size: clamp(36px, 6vw, 62px);
+  line-height: 1.08;
+  letter-spacing: -0.045em;
+  overflow-wrap: anywhere;
+}
+
+.heading > p:last-child,
+.routeState > p {
+  color: var(--muted);
+  line-height: 1.75;
+}
+
+.eyebrow {
+  margin: 0 0 13px;
+  color: var(--muted);
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 11px;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.loading {
+  min-height: 220px;
+  color: var(--muted);
+}
+
+.routeState,
+.errorState,
+.emptyState {
+  max-width: 740px;
+  padding-block: 48px;
+}
+
+.routeState a,
+.routeState button,
+.errorState button {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  justify-content: center;
+  margin-top: 18px;
+  padding-inline: 16px;
+  border: 1px solid var(--line-strong);
+  border-radius: 5px;
+  background: var(--paper);
+  color: var(--signal);
+  font-weight: 650;
+}
+
+.summary {
+  margin-top: 30px;
+  border-block: 1px solid var(--line);
+}
+
+.summary dl {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  margin: 0;
+}
+
+.summary dl > div {
+  min-width: 0;
+  padding: 20px;
+  border-right: 1px solid var(--line);
+}
+
+.summary dl > div:last-child {
+  border-right: 0;
+}
+
+.summary dt,
+.snapshotToolbar dt {
+  color: var(--muted);
+  font-size: 11px;
+}
+
+.summary dd,
+.snapshotToolbar dd {
+  margin: 7px 0 0;
+  font-size: 14px;
+  overflow-wrap: anywhere;
+}
+
+.changeSummary,
+.publishAction,
+.blocked,
+.gateReady {
+  max-width: 850px;
+  padding-block: 42px;
+  border-bottom: 1px solid var(--line);
+}
+
+.changeSummary h2,
+.publishAction h2,
+.blocked h2,
+.gateReady h2,
+.errorState h2,
+.emptyState h2 {
+  margin: 0 0 12px;
+  font-size: 27px;
+  line-height: 1.3;
+  overflow-wrap: anywhere;
+}
+
+.changeSummary p,
+.publishAction > p,
+.blocked p,
+.gateReady p,
+.errorState p,
+.emptyState p {
+  color: var(--muted);
+  line-height: 1.75;
+}
+
+.blocked {
+  margin-top: 30px;
+  padding-inline: 22px;
+  border-left: 3px solid #9a611e;
+  background: #fff9f0;
+}
+
+.blocked a,
+.gateReady a {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  color: var(--signal);
+  font-weight: 650;
+}
+
+.gateReady {
+  margin-top: 30px;
+  padding-inline: 22px;
+  border-left: 3px solid #2d7257;
+  background: #f4fbf7;
+}
+
+.warningGroup {
+  margin: 26px 0 0;
+  padding: 0;
+  border: 0;
+  border-top: 1px solid var(--line-strong);
+}
+
+.warningGroup legend {
+  padding: 22px 0 0;
+  font-size: 17px;
+  font-weight: 700;
+}
+
+.warningGroup > p,
+.noWarnings {
+  margin: 8px 0 16px;
+  color: var(--muted);
+  font-size: 13px;
+}
+
+.warningList {
+  border-bottom: 1px solid var(--line);
+}
+
+.warningItem {
+  display: grid;
+  grid-template-columns: 24px minmax(0, 1fr);
+  gap: 13px;
+  min-height: 66px;
+  align-items: start;
+  padding-block: 16px;
+  border-top: 1px solid var(--line);
+  cursor: pointer;
+}
+
+.warningItem input {
+  width: 20px;
+  height: 20px;
+  margin-top: 2px;
+  accent-color: var(--signal);
+}
+
+.warningItem span {
+  display: grid;
+  min-width: 0;
+  gap: 4px;
+}
+
+.warningItem strong {
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 12px;
+  overflow-wrap: anywhere;
+}
+
+.warningItem small {
+  color: var(--muted);
+  line-height: 1.6;
+}
+
+.actions,
+.dialogActions,
+.rowActions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px;
+}
+
+.actions {
+  justify-content: flex-end;
+  margin-top: 28px;
+}
+
+.actions a,
+.actions button,
+.rowActions a,
+.rowActions button,
+.filters button,
+.dialogActions button {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  justify-content: center;
+  padding-inline: 15px;
+  border: 1px solid var(--line-strong);
+  border-radius: 5px;
+  background: var(--paper);
+  color: var(--ink);
+  font: inherit;
+  font-size: 13px;
+  font-weight: 650;
+}
+
+.actions button,
+.filters button {
+  border-color: var(--signal);
+  background: var(--signal);
+  color: #fff;
+}
+
+.actions button:disabled,
+.dialogActions button:disabled {
+  opacity: 0.52;
+  cursor: not-allowed;
+}
+
+.error {
+  margin-top: 18px;
+  padding: 13px 15px;
+  border-left: 3px solid #a13b31;
+  background: #fff7f4;
+  color: #75271f !important;
+}
+
+.success {
+  margin-top: 22px;
+  padding: 13px 15px;
+  border-left: 3px solid #2d7257;
+  background: #f4fbf7;
+  color: #215943;
+}
+
+.filters {
+  display: grid;
+  grid-template-columns: minmax(260px, 1fr) 190px auto;
+  gap: 14px;
+  align-items: end;
+  padding-block: 28px;
+  border-bottom: 1px solid var(--line-strong);
+}
+
+.filters label {
+  display: grid;
+  min-width: 0;
+  gap: 7px;
+  color: var(--muted);
+  font-size: 12px;
+  font-weight: 650;
+}
+
+.filters input,
+.filters select {
+  width: 100%;
+  min-width: 0;
+  min-height: 44px;
+  padding-inline: 12px;
+  border: 1px solid var(--line-strong);
+  border-radius: 5px;
+  background: var(--paper);
+  color: var(--ink);
+  font: inherit;
+}
+
+.historyList {
+  margin: 28px 0 0;
+  padding: 0;
+  border-top: 1px solid var(--line-strong);
+  list-style: none;
+}
+
+.historyRow {
+  display: grid;
+  grid-template-columns: 100px minmax(260px, 1fr) 180px minmax(160px, auto);
+  gap: 20px;
+  align-items: start;
+  padding-block: 25px;
+  border-bottom: 1px solid var(--line);
+}
+
+.eventType,
+.kind {
+  margin: 3px 0 0;
+  color: var(--muted);
+  font-family: "IBM Plex Mono", monospace;
+  font-size: 11px;
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+}
+
+.eventMain {
+  min-width: 0;
+}
+
+.eventMain h2 {
+  margin: 5px 0 0;
+  font-size: 17px;
+  line-height: 1.5;
+  overflow-wrap: anywhere;
+}
+
+.eventMain > p:last-child,
+.historyRow time {
+  margin: 6px 0 0;
+  color: var(--muted);
+  font-size: 12px;
+  line-height: 1.6;
+  overflow-wrap: anywhere;
+}
+
+.rowActions {
+  justify-content: flex-end;
+}
+
+.rowActions a,
+.rowActions button {
+  color: var(--signal);
+}
+
+.dialog {
+  width: min(580px, calc(100% - 32px));
+  max-height: calc(100vh - 32px);
+  padding: 0;
+  overflow: auto;
+  border: 1px solid var(--line-strong);
+  border-radius: 8px;
+  background: var(--paper);
+  color: var(--ink);
+}
+
+.dialog::backdrop {
+  background: rgba(23, 24, 27, 0.5);
+}
+
+.dialogBody {
+  padding: 30px;
+}
+
+.dialogBody h2 {
+  margin: 0 0 12px;
+  font-size: 28px;
+}
+
+.dialogBody > p {
+  line-height: 1.7;
+}
+
+.preservedNote {
+  margin-top: 22px;
+  padding: 17px;
+  border-left: 3px solid #2d7257;
+  background: #f4fbf7;
+}
+
+.preservedNote p {
+  margin: 6px 0 0;
+  color: var(--muted);
+  line-height: 1.6;
+}
+
+.dialogActions {
+  justify-content: flex-end;
+  margin-top: 28px;
+}
+
+.dialogActions button:last-child {
+  border-color: #9b342d;
+  background: #9b342d;
+  color: #fff;
+}
+
+.snapshotToolbar {
+  display: grid;
+  grid-template-columns: minmax(220px, 1fr) minmax(420px, 1.4fr) auto;
+  gap: 24px;
+  align-items: center;
+  padding-bottom: 28px;
+  border-bottom: 1px solid var(--line-strong);
+}
+
+.snapshotTitle {
+  margin: 0;
+  font-size: 21px;
+  font-weight: 700;
+}
+
+.snapshotToolbar dl {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 16px;
+  margin: 0;
+}
+
+.snapshotToolbar a {
+  display: inline-flex;
+  min-height: 44px;
+  align-items: center;
+  color: var(--signal);
+  font-size: 13px;
+  font-weight: 650;
+}
+
+.snapshotDocument {
+  min-width: 0;
+  padding-top: 30px;
+}
+
+.snapshotDocument :global(.public-record-embedded) {
+  width: 100%;
+}
+
+@media (max-width: 980px) {
+  .summary dl {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .summary dl > div:nth-child(2) {
+    border-right: 0;
+  }
+
+  .summary dl > div:nth-child(-n + 2) {
+    border-bottom: 1px solid var(--line);
+  }
+
+  .historyRow {
+    grid-template-columns: 84px minmax(0, 1fr) 170px;
+  }
+
+  .rowActions {
+    grid-column: 2 / -1;
+  }
+
+  .snapshotToolbar {
+    grid-template-columns: minmax(0, 1fr) auto;
+  }
+
+  .snapshotToolbar dl {
+    grid-column: 1 / -1;
+    grid-row: 2;
+  }
+}
+
+@media (max-width: 767px) {
+  .heading {
+    padding-bottom: 32px;
+  }
+
+  .summary dl,
+  .filters,
+  .historyRow,
+  .snapshotToolbar,
+  .snapshotToolbar dl {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .summary dl > div,
+  .summary dl > div:nth-child(2) {
+    border-right: 0;
+    border-bottom: 1px solid var(--line);
+  }
+
+  .summary dl > div:last-child {
+    border-bottom: 0;
+  }
+
+  .filters button,
+  .actions a,
+  .actions button,
+  .rowActions a,
+  .rowActions button,
+  .dialogActions button {
+    width: 100%;
+  }
+
+  .historyRow {
+    gap: 8px;
+  }
+
+  .rowActions,
+  .snapshotToolbar dl {
+    grid-column: 1;
+  }
+
+  .rowActions,
+  .actions,
+  .dialogActions {
+    align-items: stretch;
+    flex-direction: column;
+  }
+
+  .dialogBody {
+    padding: 24px 20px;
+  }
+}
diff --git a/src/features/tech-log/presentation/styles/studio-editor.css b/src/features/tech-log/presentation/styles/studio-editor.css
new file mode 100644
index 0000000..d042843
--- /dev/null
+++ b/src/features/tech-log/presentation/styles/studio-editor.css
@@ -0,0 +1,92 @@
+.studio-app .studio-editor-page,
+.studio-app .studio-editor-layout,
+.studio-app .studio-editor-workspace,
+.studio-app .studio-editor-workspace > [role="tabpanel"] { min-width: 0; }
+
+.studio-app .studio-editor-loading { min-height: 240px; padding-block: 56px; color: var(--muted); }
+.studio-app .studio-editor-tabs { display: flex; gap: 28px; border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-editor-tabs button { position: relative; min-width: 112px; min-height: 44px; padding: 0; border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 650; }
+.studio-app .studio-editor-tabs button[aria-selected="true"] { color: var(--ink); }
+.studio-app .studio-editor-tabs button[aria-selected="true"]::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--signal); content: ""; }
+
+.studio-app .studio-editor-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 280px); gap: 64px; align-items: start; padding-top: 40px; }
+.studio-app .studio-editor-heading { padding-bottom: 36px; border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-editor-heading h1 { margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.05; letter-spacing: -0.045em; }
+.studio-app .studio-editor-heading > p:last-child { max-width: 780px; margin: 18px 0 0; color: var(--muted); font-size: 17px; line-height: 1.65; overflow-wrap: anywhere; }
+.studio-app .studio-editor-section { padding: 48px 0; border-bottom: 1px solid var(--line); }
+.studio-app .studio-editor-section-heading { margin-bottom: 24px; }
+.studio-app .studio-editor-section-heading .studio-eyebrow { margin-bottom: 8px; }
+.studio-app .studio-editor-section-heading h2,
+.studio-app .studio-document-status-rail h2,
+.studio-app .studio-preview-error h2 { margin: 0; font-size: 25px; letter-spacing: -0.03em; }
+
+.studio-app .studio-field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
+.studio-app .studio-field,
+.studio-app .studio-ordered-item > label,
+.studio-app .studio-relation-item > label { display: grid; min-width: 0; gap: 8px; color: var(--muted); font-size: 12px; font-weight: 650; }
+.studio-app .studio-field--wide { grid-column: 1 / -1; }
+.studio-app .studio-field input,
+.studio-app .studio-field select,
+.studio-app .studio-field textarea,
+.studio-app .studio-ordered-item input,
+.studio-app .studio-ordered-item textarea,
+.studio-app .studio-relation-item input,
+.studio-app .studio-relation-item select { width: 100%; min-width: 0; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font: inherit; font-size: 15px; font-weight: 450; line-height: 1.55; }
+.studio-app .studio-field textarea,
+.studio-app .studio-ordered-item textarea { min-height: 112px; resize: vertical; }
+.studio-app .studio-field .studio-markdown-field { min-height: 420px; font-family: "IBM Plex Mono", monospace; font-size: 13px; }
+
+.studio-app .studio-ordered-list,
+.studio-app .studio-resolution-fields { min-width: 0; margin: 34px 0 0; padding: 0; border: 0; }
+.studio-app .studio-ordered-list legend,
+.studio-app .studio-resolution-fields legend { margin-bottom: 14px; font-size: 17px; font-weight: 700; }
+.studio-app .studio-ordered-list > p { margin: 0 0 16px; color: var(--muted); font-size: 13px; }
+.studio-app .studio-ordered-item,
+.studio-app .studio-relation-item { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 22px 0; border-top: 1px solid var(--line); }
+.studio-app .studio-item-actions { display: flex; flex-wrap: wrap; gap: 8px; }
+.studio-app .studio-item-actions button,
+.studio-app .studio-add-item,
+.studio-app .studio-document-status-rail button { min-height: 44px; padding-inline: 13px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font-weight: 650; }
+.studio-app .studio-item-actions button:disabled,
+.studio-app .studio-add-item:disabled { opacity: 0.45; }
+.studio-app .studio-add-item { margin-top: 12px; }
+.studio-app .studio-resolution-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
+.studio-app .studio-resolution-fields legend { grid-column: 1 / -1; }
+
+.studio-app .studio-document-status-rail { position: sticky; top: 28px; min-width: 0; padding: 24px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-document-status-rail .studio-eyebrow { margin-bottom: 8px; }
+.studio-app .studio-editor-status { margin: 20px 0; font-weight: 700; }
+.studio-app .studio-editor-status--dirty,
+.studio-app .studio-editor-status--conflict,
+.studio-app .studio-editor-conflict { color: #8f2f27; }
+.studio-app .studio-editor-status--clean { color: #166748; }
+.studio-app .studio-document-status-rail dl { display: grid; gap: 12px; margin: 0 0 20px; }
+.studio-app .studio-document-status-rail dl div { display: flex; justify-content: space-between; gap: 16px; }
+.studio-app .studio-document-status-rail dt { color: var(--muted); font-size: 12px; }
+.studio-app .studio-document-status-rail dd { margin: 0; font-size: 13px; }
+.studio-app .studio-document-status-rail button { width: 100%; border-color: var(--signal); background: var(--signal); color: #fff; }
+.studio-app .studio-document-status-rail button:disabled { border-color: var(--line-strong); background: var(--paper); color: var(--muted); }
+.studio-app .studio-document-status-rail > p:last-child { margin: 16px 0 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
+
+.studio-app .studio-instant-preview { min-width: 0; overflow: clip; border: 1px solid var(--line); }
+.studio-app .studio-instant-preview .public-record-embedded { width: 100%; max-width: none; margin: 0; padding: clamp(24px, 5vw, 56px); }
+.studio-app .studio-preview-error { padding: 48px 0; border-bottom: 1px solid var(--line); }
+.studio-app .studio-preview-error ul { margin: 20px 0 0; padding-left: 20px; color: #8f2f27; line-height: 1.7; overflow-wrap: anywhere; }
+
+@media (max-width: 1024px) {
+  .studio-app .studio-editor-layout { grid-template-columns: minmax(0, 1fr); gap: 40px; }
+  .studio-app .studio-document-status-rail { position: static; }
+}
+
+@media (max-width: 767px) {
+  .studio-app .studio-editor-heading { padding-bottom: 28px; }
+  .studio-app .studio-editor-tabs { gap: 18px; }
+  .studio-app .studio-editor-tabs button { flex: 1; min-width: 0; }
+  .studio-app .studio-editor-layout { padding-top: 28px; }
+  .studio-app .studio-field-grid,
+  .studio-app .studio-resolution-fields { grid-template-columns: minmax(0, 1fr); }
+  .studio-app .studio-field--wide,
+  .studio-app .studio-resolution-fields legend { grid-column: auto; }
+  .studio-app .studio-item-actions { display: grid; grid-template-columns: minmax(0, 1fr); }
+  .studio-app .studio-instant-preview .public-record-embedded { padding: 22px 16px; }
+}
diff --git a/src/features/tech-log/presentation/styles/studio.css b/src/features/tech-log/presentation/styles/studio.css
new file mode 100644
index 0000000..f1c0d13
--- /dev/null
+++ b/src/features/tech-log/presentation/styles/studio.css
@@ -0,0 +1,155 @@
+.studio-app { min-height: 100vh; color: var(--ink); }
+.studio-app .studio-skip-link { position: fixed; z-index: 100; top: 12px; left: 16px; padding: 10px 14px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--paper); transform: translateY(-160%); }
+.studio-app .studio-skip-link:focus { transform: translateY(0); }
+.studio-app .studio-header { border-bottom: 1px solid var(--line); background: rgba(252, 252, 251, 0.94); }
+.studio-app .studio-header-inner,
+.studio-app .studio-mobile-navigation,
+.studio-app .studio-main { width: min(1180px, calc(100% - 80px)); margin-inline: auto; }
+.studio-app .studio-header-inner { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 40px; }
+.studio-app .studio-wordmark { display: inline-flex; min-height: 44px; align-items: center; font-size: 17px; font-weight: 700; letter-spacing: -0.02em; }
+.studio-app .studio-wordmark span { margin-left: 5px; color: var(--signal); font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; }
+.studio-app .studio-desktop-navigation nav,
+.studio-app .studio-mobile-navigation nav { display: flex; align-items: center; gap: 26px; }
+.studio-app .studio-desktop-navigation a,
+.studio-app .studio-mobile-navigation a { display: inline-flex; min-height: 44px; align-items: center; color: var(--muted); font-size: 14px; }
+.studio-app nav a[aria-current="page"] { color: var(--ink); font-weight: 650; }
+.studio-app .studio-menu-trigger { display: none; min-height: 44px; padding-inline: 12px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); }
+.studio-app .studio-mobile-navigation { padding-bottom: 16px; }
+.studio-app .studio-main { padding-block: 72px 120px; }
+.studio-app .studio-page-heading { max-width: 760px; padding-bottom: 52px; }
+.studio-app .studio-page-heading h1,
+.studio-app .studio-route-state h1 { margin: 0 0 18px; font-size: clamp(36px, 6vw, 64px); line-height: 1.08; letter-spacing: -0.045em; }
+.studio-app .studio-eyebrow { margin: 0 0 14px; color: var(--muted); font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 0.08em; }
+.studio-app .studio-overview-list { border-top: 1px solid var(--line-strong); }
+.studio-app .studio-overview-list section { display: grid; grid-template-columns: 130px minmax(180px, 0.8fr) minmax(260px, 1.4fr) auto; align-items: baseline; gap: 24px; padding-block: 28px; border-bottom: 1px solid var(--line); }
+.studio-app .studio-overview-list h2,
+.studio-app .studio-overview-list p { margin: 0; }
+.studio-app .studio-overview-list a,
+.studio-app .studio-route-state > a { color: var(--signal); font-weight: 650; }
+.studio-app .studio-route-state { max-width: 720px; padding-block: 48px; }
+.studio-app .studio-route-state button { min-height: 44px; margin-top: 18px; padding-inline: 16px; border: 1px solid var(--signal); border-radius: 5px; background: var(--signal); color: #fff; }
+.studio-app .studio-loading { min-height: 180px; }
+.studio-app .studio-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
+.studio-app .studio-unsaved-dialog { width: min(560px, calc(100% - 32px)); padding: 0; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--paper); color: var(--ink); }
+.studio-app .studio-unsaved-dialog::backdrop { background: rgba(23, 24, 27, 0.48); }
+.studio-app .studio-dialog-body { padding: 30px; }
+.studio-app .studio-dialog-body h2 { margin: 0 0 12px; font-size: 26px; }
+.studio-app .studio-dialog-error { color: #8f2f27; }
+.studio-app .studio-dialog-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-top: 28px; }
+.studio-app .studio-dialog-actions button { min-height: 44px; padding-inline: 14px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); }
+.studio-app .studio-dialog-actions button:last-child { border-color: var(--signal); background: var(--signal); color: #fff; }
+
+.studio-app .studio-page-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 36px; border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-page-top .studio-page-heading { padding-bottom: 42px; }
+.studio-app .studio-primary-action,
+.studio-app .studio-primary-button,
+.studio-app .studio-secondary-button,
+.studio-app .studio-document-tools button,
+.studio-app .studio-empty-state a { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding-inline: 16px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font-weight: 650; }
+.studio-app .studio-primary-action,
+.studio-app .studio-primary-button { margin-bottom: 42px; border-color: var(--signal); background: var(--signal); color: #fff; }
+.studio-app .studio-summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 28px; border-block: 1px solid var(--line); }
+.studio-app .studio-summary-grid div { display: grid; gap: 9px; padding: 22px; border-right: 1px solid var(--line); }
+.studio-app .studio-summary-grid div:last-child { border-right: 0; }
+.studio-app .studio-summary-grid span { color: var(--muted); font-size: 12px; }
+.studio-app .studio-summary-grid strong { font-size: 24px; letter-spacing: -0.03em; }
+.studio-app .studio-work-section { padding-top: 54px; }
+.studio-app .studio-section-title { display: flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-section-title h2 { margin: 0; font-size: 24px; }
+.studio-app .studio-section-title a { display: inline-flex; min-height: 44px; align-items: center; color: var(--signal); font-size: 13px; font-weight: 650; }
+.studio-app .studio-work-list,
+.studio-app .studio-document-list { border-bottom: 1px solid var(--line); }
+.studio-app .studio-work-row { display: grid; grid-template-columns: 110px minmax(0, 1fr) 130px; gap: 24px; align-items: start; padding-block: 24px; border-top: 1px solid var(--line); }
+.studio-app .studio-work-list > :first-child { border-top: 0; }
+.studio-app .studio-row-label { margin: 3px 0 0; color: var(--muted); font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; }
+.studio-app .studio-work-row h3 { margin: 0; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; }
+.studio-app .studio-work-row h3 a { display: inline-flex; min-height: 44px; align-items: flex-start; }
+.studio-app .studio-work-row div p,
+.studio-app .studio-work-row time { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
+.studio-app .studio-empty-inline { margin: 0; padding-block: 26px; color: var(--muted); }
+.studio-app .studio-screen-error { margin-top: 26px; padding: 16px; border-left: 3px solid #a13b31; background: #fff7f4; color: #75271f; }
+
+.studio-app .studio-document-tools { display: grid; grid-template-columns: minmax(280px, 1fr) 180px 180px; gap: 16px; padding-block: 28px; border-bottom: 1px solid var(--line-strong); }
+.studio-app .studio-document-tools form,
+.studio-app .studio-document-tools label { display: grid; gap: 8px; color: var(--muted); font-size: 12px; font-weight: 650; }
+.studio-app .studio-document-tools form div { display: flex; gap: 8px; }
+.studio-app .studio-document-tools input,
+.studio-app .studio-document-tools select { width: 100%; min-width: 0; min-height: 44px; padding-inline: 12px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); }
+.studio-app .studio-document-tools input { flex: 1; }
+.studio-app .studio-result-count { margin: 24px 0 10px; color: var(--muted); font-size: 13px; }
+.studio-app .studio-document-row { display: grid; grid-template-columns: 105px minmax(240px, 1fr) minmax(360px, 0.9fr); gap: 24px; align-items: start; padding-block: 26px; border-top: 1px solid var(--line); }
+.studio-app .studio-document-list > :first-child { border-top: 0; }
+.studio-app .studio-document-title h2 { margin: 0; font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; }
+.studio-app .studio-document-title h2 a { display: inline-flex; min-height: 44px; align-items: flex-start; }
+.studio-app .studio-document-title p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
+.studio-app .studio-document-row dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 0; }
+.studio-app .studio-document-row dt { color: var(--muted); font-size: 11px; }
+.studio-app .studio-document-row dd { margin: 5px 0 0; font-size: 13px; overflow-wrap: anywhere; }
+.studio-app .studio-secondary-button { margin-top: 24px; }
+.studio-app .studio-empty-state { padding-block: 56px; border-bottom: 1px solid var(--line); }
+.studio-app .studio-empty-state h2 { margin: 0; font-size: 25px; }
+.studio-app .studio-empty-state p { margin: 12px 0 22px; color: var(--muted); }
+
+.studio-app .studio-type-list { margin: 0; padding: 0; border: 0; border-top: 1px solid var(--line-strong); }
+.studio-app .studio-type-list legend { padding: 0 0 16px; font-size: 20px; font-weight: 700; }
+.studio-app .studio-type-list label { display: grid; grid-template-columns: 32px 140px minmax(260px, 1fr) minmax(220px, 0.8fr); gap: 18px; min-height: 88px; align-items: center; padding-block: 20px; border-bottom: 1px solid var(--line); cursor: pointer; }
+.studio-app .studio-type-list input { width: 20px; height: 20px; margin: 0; }
+.studio-app .studio-type-list strong { font-size: 18px; }
+.studio-app .studio-type-list span,
+.studio-app .studio-type-list small { color: var(--muted); line-height: 1.6; }
+.studio-app .studio-create-footer { display: flex; align-items: center; gap: 20px; margin-top: 28px; }
+.studio-app .studio-create-footer .studio-primary-button { margin: 0; }
+.studio-app .studio-create-footer p { margin: 0; color: var(--muted); font-size: 13px; }
+.studio-app .studio-primary-button:disabled { opacity: 0.55; cursor: wait; }
+
+@media (max-width: 900px) {
+  .studio-app .studio-overview-list section { grid-template-columns: 110px minmax(0, 1fr); }
+  .studio-app .studio-overview-list section > p:nth-of-type(2),
+  .studio-app .studio-overview-list section > a { grid-column: 2; }
+  .studio-app .studio-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+  .studio-app .studio-summary-grid div:nth-child(2) { border-right: 0; }
+  .studio-app .studio-summary-grid div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
+  .studio-app .studio-document-tools { grid-template-columns: minmax(0, 1fr) repeat(2, 160px); }
+  .studio-app .studio-document-row { grid-template-columns: 90px minmax(0, 1fr); }
+  .studio-app .studio-document-row dl { grid-column: 2; }
+}
+
+@media (max-width: 767px) {
+  .studio-app .studio-header-inner,
+  .studio-app .studio-mobile-navigation,
+  .studio-app .studio-main { width: min(100% - 32px, 1180px); }
+  .studio-app .studio-header-inner { min-height: 68px; gap: 16px; }
+  .studio-app .studio-desktop-navigation { display: none; }
+  .studio-app .studio-menu-trigger { display: inline-flex; align-items: center; }
+  .studio-app .studio-mobile-navigation nav { align-items: stretch; flex-direction: column; gap: 2px; }
+  .studio-app .studio-mobile-navigation a { width: 100%; }
+  .studio-app .studio-main { padding-block: 48px 88px; }
+  .studio-app .studio-overview-list section { display: block; }
+  .studio-app .studio-overview-list h2 { margin-bottom: 8px; }
+  .studio-app .studio-overview-list a { display: inline-flex; min-height: 44px; margin-top: 12px; align-items: center; }
+  .studio-app .studio-dialog-body { padding: 24px 20px; }
+  .studio-app .studio-dialog-actions { align-items: stretch; flex-direction: column; }
+  .studio-app .studio-page-top { align-items: flex-start; flex-direction: column; gap: 0; }
+  .studio-app .studio-page-top .studio-page-heading { padding-bottom: 24px; }
+  .studio-app .studio-primary-action { width: 100%; margin: 0 0 32px; }
+  .studio-app .studio-work-section { padding-top: 42px; }
+  .studio-app .studio-work-row { grid-template-columns: 78px minmax(0, 1fr); gap: 12px; }
+  .studio-app .studio-work-row time { grid-column: 2; }
+  .studio-app .studio-document-tools { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+  .studio-app .studio-document-tools form { grid-column: 1 / -1; }
+  .studio-app .studio-document-row { grid-template-columns: 74px minmax(0, 1fr); gap: 12px; }
+  .studio-app .studio-document-row dl { grid-column: 2; grid-template-columns: repeat(2, minmax(0, 1fr)); }
+  .studio-app .studio-type-list label { grid-template-columns: 30px minmax(0, 1fr); gap: 7px 12px; }
+  .studio-app .studio-type-list span,
+  .studio-app .studio-type-list small { grid-column: 2; }
+  .studio-app .studio-create-footer { align-items: stretch; flex-direction: column; }
+}
+
+@media (max-width: 420px) {
+  .studio-app .studio-summary-grid { grid-template-columns: minmax(0, 1fr); }
+  .studio-app .studio-summary-grid div { border-right: 0; border-bottom: 1px solid var(--line); }
+  .studio-app .studio-summary-grid div:last-child { border-bottom: 0; }
+  .studio-app .studio-document-tools { grid-template-columns: minmax(0, 1fr); }
+  .studio-app .studio-document-tools form { grid-column: 1; }
+  .studio-app .studio-document-row dl { grid-template-columns: minmax(0, 1fr); }
+}
diff --git a/src/features/tech-log/presentation/styles/workflow.module.css b/src/features/tech-log/presentation/styles/workflow.module.css
new file mode 100644
index 0000000..7b0e654
--- /dev/null
+++ b/src/features/tech-log/presentation/styles/workflow.module.css
@@ -0,0 +1,88 @@
+:global(.studio-workflow-screen),
+:global(.studio-preview-screen) { min-width: 0; }
+
+:global(.studio-workflow-heading),
+:global(.studio-preview-toolbar) { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; padding-bottom: 42px; border-bottom: 1px solid var(--line-strong); }
+:global(.studio-workflow-heading) h1,
+:global(.studio-preview-toolbar) h1 { margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.06; letter-spacing: -0.045em; }
+:global(.studio-workflow-heading > div > p:last-child),
+:global(.studio-preview-toolbar > div > p:last-child) { max-width: 780px; margin: 16px 0 0; color: var(--muted); font-size: 17px; line-height: 1.6; overflow-wrap: anywhere; }
+:global(.studio-workflow-quiet-link) { display: inline-flex; min-height: 44px; align-items: center; color: var(--signal); font-weight: 650; white-space: nowrap; }
+
+:global(.studio-workflow-gate) { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 36px; align-items: center; margin-top: 34px; padding: 28px; border: 1px solid var(--line-strong); border-left-width: 4px; }
+:global(.studio-workflow-gate--ready) { border-left-color: #166748; background: #f3faf6; }
+:global(.studio-workflow-gate--blocked) { border-left-color: #9a5a1f; background: #fff9f0; }
+:global(.studio-workflow-gate) h2 { margin: 0; font-size: 25px; letter-spacing: -0.03em; }
+:global(.studio-workflow-gate) p:last-child { margin: 10px 0 0; color: var(--muted); line-height: 1.65; }
+:global(.studio-workflow-actions) { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
+:global(.studio-workflow-actions) button,
+:global(.studio-workflow-actions) a { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding-inline: 15px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font-weight: 650; }
+:global(.studio-workflow-actions) button:first-child { border-color: var(--signal); background: var(--signal); color: #fff; }
+:global(.studio-workflow-actions) button:disabled { opacity: 0.55; cursor: wait; }
+:global(.studio-workflow-feedback) { margin: 18px 0 0; padding: 14px 16px; border-left: 3px solid var(--signal); background: #f5f7ff; }
+:global(.studio-workflow-loading) { min-height: 240px; padding-block: 56px; color: var(--muted); }
+
+:global(.studio-workflow-report) { margin-top: 54px; border-top: 1px solid var(--line-strong); }
+:global(.studio-workflow-section-heading) { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 26px; border-bottom: 1px solid var(--line); }
+:global(.studio-workflow-section-heading) h2 { margin: 0; font-size: 28px; letter-spacing: -0.03em; }
+:global(.studio-workflow-status) { display: inline-flex; min-height: 32px; align-items: center; padding-inline: 11px; border: 1px solid currentColor; border-radius: 999px; font-family: "IBM Plex Mono", monospace; font-size: 11px; font-weight: 700; }
+:global(.studio-workflow-status--invalid) { color: #8f2f27; }
+:global(.studio-workflow-status--warnings) { color: #8b5a14; }
+:global(.studio-workflow-status--valid) { color: #166748; }
+:global(.studio-workflow-metadata),
+:global(.studio-preview-metadata) { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; border-bottom: 1px solid var(--line); }
+:global(.studio-workflow-metadata) div,
+:global(.studio-preview-metadata) div { min-width: 0; padding: 20px; border-right: 1px solid var(--line); }
+:global(.studio-workflow-metadata) div:last-child,
+:global(.studio-preview-metadata) div:last-child { border-right: 0; }
+:global(.studio-workflow-metadata) dt,
+:global(.studio-preview-metadata) dt { color: var(--muted); font-size: 11px; }
+:global(.studio-workflow-metadata) dd,
+:global(.studio-preview-metadata) dd { margin: 7px 0 0; font-size: 13px; overflow-wrap: anywhere; }
+:global(.studio-workflow-issue-list) { margin: 0; padding: 0; list-style: none; }
+:global(.studio-workflow-issue-list) li { min-width: 0; border-bottom: 1px solid var(--line); }
+:global(.studio-workflow-issue-list) a { display: grid; grid-template-columns: 72px minmax(0, 1fr) auto; min-width: 0; gap: 18px; align-items: start; padding-block: 22px; color: inherit; }
+:global(.studio-workflow-issue-severity) { color: var(--muted); font-family: "IBM Plex Mono", monospace; font-size: 11px; }
+:global(.studio-workflow-issue-body) { display: grid; min-width: 0; gap: 7px; }
+:global(.studio-workflow-issue-body) strong,
+:global(.studio-workflow-issue-body) small { overflow-wrap: anywhere; }
+:global(.studio-workflow-issue-body) small { color: var(--muted); font-family: "IBM Plex Mono", monospace; }
+:global(.studio-workflow-empty-issues),
+:global(.studio-workflow-empty-panel) { margin: 0; padding-block: 42px; border-bottom: 1px solid var(--line); color: var(--muted); }
+:global(.studio-workflow-empty-panel) h2 { margin: 0; color: var(--ink); font-size: 25px; }
+:global(.studio-workflow-empty-panel) p { margin: 10px 0 0; }
+
+:global(.studio-preview-toolbar--compact) { padding-bottom: 28px; }
+:global(.studio-preview-title) { margin: 0; color: var(--ink); font-size: 28px; font-weight: 700; letter-spacing: -0.03em; }
+:global(.studio-preview-state) { display: flex; justify-content: space-between; gap: 28px; align-items: center; margin-top: 24px; padding: 20px; border: 1px solid var(--line-strong); border-left-width: 4px; }
+:global(.studio-preview-state) strong { font-family: "IBM Plex Mono", monospace; font-size: 12px; }
+:global(.studio-preview-state) p { margin: 5px 0 0; color: var(--muted); }
+:global(.studio-preview-state--current) { border-left-color: #166748; background: #f3faf6; }
+:global(.studio-preview-state--none),
+:global(.studio-preview-state--stale) { border-left-color: #9a5a1f; background: #fff9f0; }
+:global(.studio-preview-state--expired) { border-left-color: #8f2f27; background: #fff7f4; }
+:global(.studio-preview-metadata) { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 20px; border-top: 1px solid var(--line); }
+:global(.studio-preview-public-frame) { min-width: 0; margin-top: 38px; overflow: clip; border: 1px solid var(--line); background: var(--paper); }
+:global(.studio-preview-public-frame .public-record-embedded) { width: 100%; max-width: none; margin: 0; padding: clamp(24px, 5vw, 56px); }
+
+@media (max-width: 1024px) {
+  :global(.studio-workflow-gate) { grid-template-columns: minmax(0, 1fr); }
+  :global(.studio-preview-state) { align-items: flex-start; flex-direction: column; }
+}
+
+@media (max-width: 767px) {
+  :global(.studio-workflow-heading),
+  :global(.studio-preview-toolbar) { align-items: flex-start; flex-direction: column; gap: 12px; padding-bottom: 28px; }
+  :global(.studio-workflow-quiet-link) { white-space: normal; }
+  :global(.studio-workflow-gate) { margin-top: 24px; padding: 22px 18px; }
+  :global(.studio-workflow-actions) { display: grid; width: 100%; grid-template-columns: minmax(0, 1fr); }
+  :global(.studio-workflow-metadata),
+  :global(.studio-preview-metadata) { grid-template-columns: minmax(0, 1fr); }
+  :global(.studio-workflow-metadata) div,
+  :global(.studio-preview-metadata) div { border-right: 0; border-bottom: 1px solid var(--line); }
+  :global(.studio-workflow-metadata) div:last-child,
+  :global(.studio-preview-metadata) div:last-child { border-bottom: 0; }
+  :global(.studio-workflow-issue-list) a { grid-template-columns: minmax(0, 1fr); gap: 8px; }
+  :global(.studio-workflow-issue-list) a > span:last-child { display: none; }
+  :global(.studio-preview-public-frame .public-record-embedded) { padding: 22px 16px; }
+}
diff --git a/tests/features/tech-log/public-shell.test.tsx b/tests/features/tech-log/public-shell.test.tsx
new file mode 100644
index 0000000..fd4eb55
--- /dev/null
+++ b/tests/features/tech-log/public-shell.test.tsx
@@ -0,0 +1,227 @@
+// @vitest-environment jsdom
+
+import { fireEvent, render, screen, within } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { createMemoryRouter, RouterProvider } from "react-router-dom";
+
+import { createTechLogFeatureInstalledInput } from "../../../src/features/tech-log/adapters/create-tech-log-feature-input.ts";
+import { FatalErrorState } from "../../../src/features/tech-log/presentation/public/components/fatal-error-state.tsx";
+import { PublicShell } from "../../../src/features/tech-log/presentation/public/public-shell.tsx";
+import { ApplicationProvider } from "../../../src/presentation/providers/application-provider.tsx";
+import { createTestApplication } from "../../helpers/create-test-application.ts";
+
+const originalShowModal = HTMLDialogElement.prototype.showModal;
+const originalClose = HTMLDialogElement.prototype.close;
+
+beforeEach(() => {
+  Object.defineProperty(HTMLDialogElement.prototype, "showModal", {
+    configurable: true,
+    value(this: HTMLDialogElement) {
+      this.setAttribute("open", "");
+    },
+  });
+  Object.defineProperty(HTMLDialogElement.prototype, "close", {
+    configurable: true,
+    value(this: HTMLDialogElement) {
+      this.removeAttribute("open");
+      this.dispatchEvent(new Event("close"));
+    },
+  });
+  vi.stubGlobal("requestAnimationFrame", (callback: FrameRequestCallback) => {
+    callback(0);
+    return 1;
+  });
+});
+
+afterEach(() => {
+  vi.unstubAllGlobals();
+  Object.defineProperty(HTMLDialogElement.prototype, "showModal", {
+    configurable: true,
+    value: originalShowModal,
+  });
+  Object.defineProperty(HTMLDialogElement.prototype, "close", {
+    configurable: true,
+    value: originalClose,
+  });
+});
+
+function renderShell(initialEntry = "/projects") {
+  const techLog = createTechLogFeatureInstalledInput().input;
+  const router = createMemoryRouter(
+    [
+      {
+        path: "*",
+        element: (
+          <PublicShell>
+            <main id="main-content" className="shell">
+              공개 본문
+            </main>
+          </PublicShell>
+        ),
+      },
+    ],
+    { initialEntries: [initialEntry] },
+  );
+  const view = render(
+    <ApplicationProvider
+      application={createTestApplication({
+        featureInputs: { "tech-log": techLog },
+      })}
+    >
+      <RouterProvider router={router} />
+    </ApplicationProvider>,
+  );
+  return { ...view, router };
+}
+
+describe("TechLog Public shell", () => {
+  it("preserves source landmark order, navigation copy, current state, and footer", () => {
+    const view = renderShell();
+    const frame = view.container.querySelector(".site-frame");
+
+    expect(
+      Array.from(frame?.children ?? [], (child) => child.tagName),
+    ).toEqual(["A", "HEADER", "MAIN", "FOOTER"]);
+    expect(screen.getByRole("link", { name: "본문으로 건너뛰기" })).toHaveAttribute(
+      "href",
+      "#main-content",
+    );
+    expect(screen.getByRole("banner")).toHaveClass("site-header");
+    expect(screen.getByRole("main")).toHaveAttribute("id", "main-content");
+    expect(screen.getByRole("contentinfo")).toHaveClass("site-footer");
+    expect(screen.getByRole("navigation", { name: "주요 탐색" })).toBeVisible();
+    expect(
+      screen.getByRole("navigation", { name: "모바일 주요 탐색" }),
+    ).toBeInTheDocument();
+    expect(
+      Array.from(
+        view.container.querySelectorAll<HTMLAnchorElement>(".desktop-nav a"),
+        (link) => link.textContent,
+      ),
+    ).toEqual(["탐색", "프로젝트", "변경 기록", "프로필"]);
+    expect(
+      Array.from(
+        view.container.querySelectorAll<HTMLAnchorElement>(
+          ".mobile-nav nav a",
+        ),
+        (link) => link.textContent,
+      ),
+    ).toEqual(["탐색", "프로젝트", "변경 기록", "프로필"]);
+    for (const link of screen.getAllByRole("link", { name: "프로젝트" })) {
+      expect(link).toHaveAttribute("aria-current", "page");
+    }
+    expect(screen.getByText("동현")).toHaveClass("footer-name");
+    expect(
+      screen.getByText("문제를 재현하고 검증해 운영 가능한 설계로 연결합니다."),
+    ).toBeVisible();
+    expect(view.container.querySelector(".app-shell")).toBeNull();
+  });
+
+  it("uses the canonical root route for brand navigation", async () => {
+    const user = userEvent.setup();
+    const { router } = renderShell("/projects/backend-skeleton");
+
+    await user.click(screen.getByRole("link", { name: "TechLog 홈" }));
+
+    expect(router.state.location.pathname).toBe("/");
+  });
+
+  it("opens search by click, closes on Escape, and restores trigger focus", async () => {
+    const user = userEvent.setup();
+    renderShell();
+    const trigger = screen.getByRole("button", { name: "TechLog 검색 열기" });
+
+    await user.click(trigger);
+
+    const dialog = screen.getByRole("dialog", { name: "TechLog 검색" });
+    const input = within(dialog).getByRole("searchbox", { name: "검색어" });
+    expect(dialog).toHaveAttribute("open");
+    expect(dialog).toHaveAttribute("aria-labelledby", `${dialog.id}-title`);
+    expect(input).toHaveFocus();
+
+    await user.keyboard("{Escape}");
+
+    expect(dialog).not.toHaveAttribute("open");
+    expect(trigger).toHaveFocus();
+  });
+
+  it("opens the native search trigger from the keyboard", async () => {
+    const user = userEvent.setup();
+    renderShell();
+    const trigger = screen.getByRole("button", { name: "TechLog 검색 열기" });
+    trigger.focus();
+
+    await user.keyboard("{Enter}");
+
+    expect(screen.getByRole("dialog", { name: "TechLog 검색" })).toHaveAttribute(
+      "open",
+    );
+    expect(screen.getByRole("searchbox", { name: "검색어" })).toHaveFocus();
+  });
+
+  it("returns source-equivalent results and navigates to their canonical route", async () => {
+    const user = userEvent.setup();
+    const { router } = renderShell();
+    await user.click(
+      screen.getByRole("button", { name: "TechLog 검색 열기" }),
+    );
+    const input = screen.getByRole("searchbox", { name: "검색어" });
+
+    await user.type(input, "Keycloak");
+
+    expect(screen.getByText("1개의 공개 기록")).toBeVisible();
+    const result = screen.getByRole("link", { name: /Auth Lab/ });
+    expect(result).toHaveAttribute("href", "/projects/auth-lab");
+    expect(
+      screen.getByRole("link", { name: /전체 검색 결과 보기/ }),
+    ).toHaveAttribute("href", "/search?q=Keycloak");
+
+    await user.click(result);
+
+    expect(router.state.location.pathname).toBe("/projects/auth-lab");
+  });
+
+  it("closes mobile navigation on Escape and before opening the one search dialog", async () => {
+    const user = userEvent.setup();
+    const view = renderShell();
+    const details = view.container.querySelector<HTMLDetailsElement>(
+      "details.mobile-nav",
+    );
+    const summary = details?.querySelector<HTMLElement>("summary");
+    expect(details).not.toBeNull();
+    expect(summary).not.toBeNull();
+
+    details!.open = true;
+    fireEvent.keyDown(details!, { key: "Escape" });
+    expect(details).not.toHaveAttribute("open");
+    expect(summary).toHaveFocus();
+
+    details!.open = true;
+    await user.click(
+      screen.getByRole("button", { name: "TechLog 검색 열기" }),
+    );
+    expect(details).not.toHaveAttribute("open");
+    expect(screen.getAllByRole("dialog", { hidden: true })).toHaveLength(1);
+  });
+});
+
+describe("TechLog fatal Public state", () => {
+  it("preserves error copy, trace relationship, and retry variants", async () => {
+    const user = userEvent.setup();
+    const retry = vi.fn();
+    const view = render(
+      <FatalErrorState traceId="PUBLIC-500" onRetry={retry} />,
+    );
+
+    expect(screen.getByRole("main")).toHaveClass("shell", "fatal-state");
+    expect(
+      screen.getByRole("heading", { name: "페이지를 불러오지 못했습니다." }),
+    ).toBeVisible();
+    expect(view.container.querySelector(".trace-id code")).toHaveTextContent(
+      "PUBLIC-500",
+    );
+    await user.click(screen.getByRole("button", { name: "다시 시도" }));
+    expect(retry).toHaveBeenCalledOnce();
+  });
+});
diff --git a/tests/features/tech-log/style-contract.test.ts b/tests/features/tech-log/style-contract.test.ts
new file mode 100644
index 0000000..14e8764
--- /dev/null
+++ b/tests/features/tech-log/style-contract.test.ts
@@ -0,0 +1,142 @@
+// @vitest-environment jsdom
+
+import { render } from "@testing-library/react";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { createElement } from "react";
+import { MemoryRouter } from "react-router-dom";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+
+import { createTechLogFeatureInstalledInput } from "../../../src/features/tech-log/adapters/create-tech-log-feature-input.ts";
+import { FatalErrorState } from "../../../src/features/tech-log/presentation/public/components/fatal-error-state.tsx";
+import { PublicShell } from "../../../src/features/tech-log/presentation/public/public-shell.tsx";
+import { ApplicationProvider } from "../../../src/presentation/providers/application-provider.tsx";
+import { createTestApplication } from "../../helpers/create-test-application.ts";
+
+let styleElement: HTMLStyleElement;
+
+beforeAll(() => {
+  styleElement = document.createElement("style");
+  styleElement.textContent = readFileSync(
+    resolve(
+      process.cwd(),
+      "src/features/tech-log/presentation/styles/globals.css",
+    ),
+    "utf8",
+  );
+  document.head.append(styleElement);
+});
+
+afterAll(() => {
+  styleElement.remove();
+});
+
+function renderPublicSurface(node: React.ReactNode) {
+  const techLog = createTechLogFeatureInstalledInput().input;
+  const shell = createElement(PublicShell, { children: node });
+  const router = createElement(
+    MemoryRouter,
+    { initialEntries: ["/projects"] },
+    shell,
+  );
+  return render(
+    createElement(ApplicationProvider, {
+      application: createTestApplication({
+        featureInputs: { "tech-log": techLog },
+      }),
+      children: router,
+    }),
+  );
+}
+
+describe("TechLog consumer-visible style contract", () => {
+  it("applies the source typography, palette, shell width, and header spacing", () => {
+    const view = renderPublicSurface(
+      createElement(
+        "main",
+        { id: "main-content", className: "shell" },
+        "공개 본문",
+      ),
+    );
+
+    const rootStyle = getComputedStyle(document.documentElement);
+    const bodyStyle = getComputedStyle(document.body);
+    const headerInner = view.container.querySelector<HTMLElement>(
+      ".header-inner",
+    );
+    const wordmark = view.getByRole("link", { name: "TechLog 홈" });
+
+    expect(rootStyle.getPropertyValue("--canvas")).toBe("#f7f7f5");
+    expect(rootStyle.getPropertyValue("--ink")).toBe("#17181b");
+    expect(rootStyle.getPropertyValue("--signal")).toBe("#3e5cc7");
+    expect(rootStyle.getPropertyValue("--shell")).toBe("1180px");
+    expect(rootStyle.getPropertyValue("--body-copy")).toBe("42rem");
+    expect(bodyStyle.fontFamily).toContain("Pretendard Variable");
+    expect(bodyStyle.fontSize).toBe("16px");
+    expect(bodyStyle.fontWeight).toBe("400");
+    expect(bodyStyle.lineHeight).toBe("1.6");
+    expect(bodyStyle.minWidth).toBe("320px");
+    expect(headerInner).not.toBeNull();
+    expect(getComputedStyle(headerInner!).display).toBe("grid");
+    expect(getComputedStyle(headerInner!).minHeight).toBe("76px");
+    expect(getComputedStyle(headerInner!).gap).toBe("48px");
+    expect(getComputedStyle(wordmark).fontSize).toBe("17px");
+    expect(getComputedStyle(wordmark).fontWeight).toBe("680");
+  });
+
+  it("keeps every header and dialog control at the source minimum target size", () => {
+    const view = renderPublicSurface(
+      createElement(
+        "main",
+        { id: "main-content", className: "shell" },
+        "공개 본문",
+      ),
+    );
+
+    const wordmark = view.getByRole("link", { name: "TechLog 홈" });
+    const navLink = view.container.querySelector<HTMLElement>(".nav-link");
+    const searchButton = view.getByRole("button", {
+      name: "TechLog 검색 열기",
+    });
+    const closeButton = view.container.querySelector<HTMLElement>(
+      ".dialog-close",
+    );
+    const searchField = view.container.querySelector<HTMLElement>(
+      ".search-field",
+    );
+    const dialogInner = view.container.querySelector<HTMLElement>(
+      ".search-dialog-inner",
+    );
+
+    expect(getComputedStyle(wordmark).minHeight).toBe("44px");
+    expect(getComputedStyle(navLink!).minHeight).toBe("44px");
+    expect(getComputedStyle(searchButton).minHeight).toBe("44px");
+    expect(getComputedStyle(closeButton!).minWidth).toBe("52px");
+    expect(getComputedStyle(closeButton!).minHeight).toBe("44px");
+    expect(getComputedStyle(searchField!).minHeight).toBe("56px");
+    expect(getComputedStyle(searchField!).marginTop).toBe("24px");
+    expect(getComputedStyle(searchField!).backgroundColor).toBe(
+      "rgb(255, 255, 255)",
+    );
+    expect(getComputedStyle(dialogInner!).padding).toBe("27px 28px 22px");
+  });
+
+  it("preserves footer spacing and fatal-action sizing", () => {
+    const view = renderPublicSurface(
+      createElement(FatalErrorState, {
+        traceId: "PUBLIC-500",
+        retryHref: "/",
+      }),
+    );
+
+    const footerInner = view.container.querySelector<HTMLElement>(
+      ".footer-inner",
+    );
+    const retry = view.getByRole("link", { name: "다시 시도" });
+
+    expect(getComputedStyle(footerInner!).minHeight).toBe("172px");
+    expect(getComputedStyle(footerInner!).gap).toBe("40px");
+    expect(getComputedStyle(retry).minHeight).toBe("44px");
+    expect(getComputedStyle(retry).marginTop).toBe("34px");
+  });
+});