:root {
  --bg: #f8f7f4;
  --surface: #ffffff;
  --ink: #191a18;
  --muted: #62645e;
  --line: #d7d8d1;
  --control: #80847a;
  --accent: #9b4b23;
  --subtle: #efebe4;
  --media: #1e211e;
  --on-dark: #f4f2ed;
  --success: #366548;
  --danger: #a2342b;
  --max: 2048px;
  --side: clamp(64px, 4.45vw, 96px);
  --radius: 3px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  line-height: 1.7;
}

body, button, input, select, textarea { font: inherit; }
button, a, summary, input, select, textarea { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
button, a, summary { cursor: pointer; }
::selection { background: var(--accent); color: var(--on-dark); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--on-dark);
  transform: translateY(-140%);
  transition: transform 160ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.loading-screen, .error-screen {
  display: grid;
  min-height: 60vh;
  place-content: center;
  gap: 12px;
  color: var(--muted);
  text-align: center;
}
.loading-screen .eyebrow, .error-screen .eyebrow { color: var(--accent); }

.site-shell { width: min(calc(100% - (var(--side) * 2)), var(--max)); margin: 0 auto; }
.site-header {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: baseline; gap: 16px; color: var(--ink); text-decoration: none; }
.brand-name { font-size: 21px; font-weight: 800; letter-spacing: -0.06em; }
.brand-english { color: var(--muted); font-family: Arial, Helvetica, sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 0.02em; }
.desktop-nav { display: flex; gap: 38px; }
.desktop-nav a, .mobile-nav a {
  position: relative;
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  transition: color 160ms var(--ease);
}
.desktop-nav a:hover, .desktop-nav a[aria-current="page"], .mobile-nav a:hover, .mobile-nav a[aria-current="page"] { color: var(--ink); }
.desktop-nav a[aria-current="page"] { font-weight: 800; }
.desktop-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: -25px;
  left: 0;
  height: 2px;
  background: var(--accent);
  content: "";
}
.menu-toggle { display: none; padding: 8px 0 8px 16px; background: transparent; color: var(--ink); font-weight: 700; }
.mobile-menu { display: none; }
.main { min-height: calc(100vh - 160px); }
.page { padding: 72px 0 112px; animation: page-in 240ms var(--ease) both; }
@keyframes page-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.eyebrow { color: var(--accent); font-size: 14px; font-weight: 800; letter-spacing: 0.01em; }
.page-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 64px;
  align-items: end;
  margin-bottom: 64px;
}
.page-heading h1, .page-heading h2 {
  max-width: 850px;
  margin: 12px 0 0;
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.08em;
}
.page-heading p { margin: 0; color: var(--muted); font-size: 17px; }
.section-rule { height: 1px; margin: 0 0 48px; background: var(--line); }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-heading h2, .section-heading h3 { margin: 0; font-size: clamp(28px, 3vw, 42px); line-height: 1.2; letter-spacing: -0.07em; }
.section-heading a, .text-link { color: var(--accent); font-size: 15px; font-weight: 700; text-decoration: none; }
.section-heading a:hover, .text-link:hover { text-decoration: underline; }
.button-row { display: flex; flex-wrap: wrap; gap: 16px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--on-dark);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  transition: background 160ms var(--ease), color 160ms var(--ease), transform 160ms var(--ease);
}
.button:hover { background: #373a35; transform: translateY(-1px); }
.button.secondary { background: transparent; color: var(--ink); border-color: var(--control); }
.button.secondary:hover { background: var(--subtle); }
.button.tertiary { border-color: transparent; background: transparent; color: var(--accent); padding-inline: 0; }
.button.small { min-height: 40px; padding: 8px 13px; font-size: 14px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) calc(clamp(314px, 22.8vw, 467px) + clamp(0px, 2.9vw, 60px));
  gap: 96px;
  align-items: start;
  padding: 62px 0 86px;
}
.hero-copy { max-width: 760px; }
.hero h1 {
  margin: 20px 0 22px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(66px, 9vw, 116px);
  font-weight: 800;
  line-height: 0.96;
  letter-spacing: -0.09em;
}
.hero h1 span { display: block; }
.hero-cn-title { margin: 0; font-size: clamp(29px, 3.6vw, 51px); line-height: 1.22; letter-spacing: -0.08em; }
.hero-intro { max-width: 600px; margin: 28px 0 34px; color: var(--muted); font-size: 18px; }
.home-contact { margin-top: 30px; }
.home-contact h2 { margin: 0 0 14px; font-size: 21px; line-height: 1.2; letter-spacing: -0.06em; }
.home-contact-list { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 0; font-style: normal; }
.home-contact-item { display: grid; gap: 4px; color: var(--muted); text-decoration: none; }
.home-contact-item span { font-size: 14px; }
.home-contact-item strong { color: var(--ink); font-size: 16px; font-weight: 600; }
a.home-contact-item:hover strong { color: var(--accent); }
.portrait-wrap { margin: 0; }
.hero-portrait { width: clamp(314px, 22.8vw, 467px); justify-self: start; margin-top: 26px; }
.portrait-wrap img { width: 100%; height: auto; aspect-ratio: auto; object-fit: contain; filter: grayscale(100%); }
.portrait-wrap figcaption { margin-top: 14px; color: var(--muted); font-size: 13px; }
.empty-work {
  position: relative;
  min-height: 390px;
  display: grid;
  align-content: center;
  padding: 48px;
  border: 1px solid #454940;
  background: var(--media);
  color: var(--on-dark);
}
.empty-work::before, .empty-work::after { position: absolute; width: 22px; height: 22px; border-color: #73796c; content: ""; }
.empty-work::before { top: 20px; left: 20px; border-top: 1px solid; border-left: 1px solid; }
.empty-work::after { right: 20px; bottom: 20px; border-right: 1px solid; border-bottom: 1px solid; }
.empty-work h3 { max-width: 760px; margin: 0; font-size: clamp(31px, 4vw, 54px); line-height: 1.2; letter-spacing: -0.07em; }
.empty-work p { margin: 12px 0 0; color: #b4b8ae; font-size: 17px; }
.work-meta { display: flex; justify-content: space-between; gap: 24px; padding-top: 16px; padding-bottom: 36px; border-bottom: 1px solid var(--line); }
.work-meta strong { font-size: 19px; }
.work-meta span { color: var(--muted); }

.system-section { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 96px; padding: 64px 0 78px; border-bottom: 1px solid var(--line); }
.system-section h2 { max-width: 360px; margin: 0 0 14px; font-size: clamp(30px, 3.5vw, 48px); line-height: 1.18; letter-spacing: -0.08em; }
.system-section p { max-width: 380px; margin: 0; color: var(--muted); }
.stage-list { margin: 0; padding: 0; list-style: none; }
.stage-list li { display: grid; grid-template-columns: 36px 180px minmax(0, 1fr); gap: 16px; align-items: center; padding: 18px 0; border-top: 1px solid var(--line); }
.stage-list li:last-child { border-bottom: 1px solid var(--line); }
.stage-list .index { color: var(--accent); font-family: Arial, Helvetica, sans-serif; font-size: 13px; font-weight: 800; }
.stage-list strong { font-size: 17px; }
.stage-list span:last-child { color: var(--muted); }
.knowledge-teaser { display: grid; grid-template-columns: 0.65fr 1.35fr; gap: 96px; padding: 72px 0 26px; }
.knowledge-teaser h2 { margin: 0; font-size: clamp(30px, 3vw, 42px); letter-spacing: -0.07em; }
.knowledge-teaser p { max-width: 740px; margin: 0 0 14px; color: var(--muted); font-size: 18px; }
.layer-flow { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 18px 0 24px; color: var(--accent); font-size: 18px; font-weight: 800; }
.layer-flow span:not(:last-child)::after { margin-left: 14px; color: var(--muted); content: "→"; }
.site-footer { display: flex; min-height: 112px; align-items: center; justify-content: space-between; gap: 26px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-brand { flex: 0 0 auto; color: var(--ink); font-weight: 800; }
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { text-decoration: none; }
.footer-nav a:hover { color: var(--accent); }

.resume-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 96px; }
.resume-aside { display: grid; align-content: start; gap: 28px; }
.aside-block { padding-top: 24px; border-top: 1px solid var(--line); }
.aside-block h3, .resume-main h2 { margin: 0 0 14px; font-size: 21px; letter-spacing: -0.06em; }
.aside-block p { margin: 4px 0; color: var(--muted); }
.resume-main { min-width: 0; }
.resume-block + .resume-block { margin-top: 72px; }
.resume-main h2 { display: flex; align-items: center; gap: 12px; font-size: 28px; }
.resume-main h2::before { width: 24px; height: 2px; background: var(--accent); content: ""; }
.timeline { margin: 0; padding: 0; list-style: none; }
.timeline-item { display: grid; grid-template-columns: 134px minmax(0, 1fr); gap: 32px; padding: 22px 0; border-top: 1px solid var(--line); }
.timeline-item:last-child { border-bottom: 1px solid var(--line); }
.timeline-date { color: var(--muted); font-family: Arial, Helvetica, sans-serif; font-size: 13px; font-weight: 700; }
.timeline-item h3 { margin: 0; font-size: 22px; line-height: 1.35; letter-spacing: -0.05em; }
.timeline-item p { margin: 6px 0 0; color: var(--muted); }
.award { padding: 22px 0; border-top: 1px solid var(--line); }
.award:last-child { border-bottom: 1px solid var(--line); }
.award strong { font-size: 21px; }
.award p { margin: 4px 0 0; color: var(--muted); }

.works-filter, .search-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 40px; }
.filter-button { min-height: 40px; padding: 8px 14px; border: 1px solid var(--control); border-radius: var(--radius); background: transparent; color: var(--muted); font-size: 14px; transition: all 160ms var(--ease); text-decoration: none; }
.filter-button:hover, .filter-button[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: var(--on-dark); }
.search-bar { justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.search-form { display: flex; flex: 1 1 360px; max-width: 640px; gap: 10px; }
.field, .select { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid var(--control); border-radius: var(--radius); background: var(--surface); color: var(--ink); }
.field::placeholder { color: #84877f; }
.field-label { display: grid; gap: 7px; color: var(--ink); font-size: 14px; font-weight: 700; }
.field-help { color: var(--muted); font-size: 13px; font-weight: 400; }
.empty-state { display: grid; min-height: 260px; place-content: center; gap: 10px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
.empty-state h1, .empty-state h2, .empty-state h3 { margin: 0; font-size: 28px; letter-spacing: -0.06em; }
.empty-state p { max-width: 560px; margin: 0 auto; color: var(--muted); }
.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.work-card { display: block; min-height: 270px; padding: 28px; background: var(--media); color: var(--on-dark); text-decoration: none; }
.work-card h2 { margin: 64px 0 8px; font-size: 28px; line-height: 1.25; }
.work-card p { margin: 0; color: #b4b8ae; }

.skills-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr) 300px; gap: 48px; }
.category-list { display: grid; align-content: start; gap: 4px; }
.category-button { position: relative; padding: 12px 14px 12px 18px; background: transparent; color: var(--muted); text-align: left; transition: all 160ms var(--ease); }
.category-button::before { position: absolute; top: 0; bottom: 0; left: 0; width: 3px; background: transparent; content: ""; }
.category-button:hover, .category-button[aria-pressed="true"] { background: var(--subtle); color: var(--ink); font-weight: 800; }
.category-button[aria-pressed="true"]::before { background: var(--accent); }
.category-button small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; font-weight: 400; }
.skill-list { min-width: 0; }
.skill-list-header { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 8px; }
.skill-list-header h2 { margin: 0; font-size: 24px; letter-spacing: -0.06em; }
.skill-row { display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; padding: 17px 0; border-top: 1px solid var(--line); text-decoration: none; }
.skill-row:last-child { border-bottom: 1px solid var(--line); }
.skill-row:hover h3, .skill-row[aria-current="true"] h3 { color: var(--accent); }
.skill-row h3 { margin: 0; font-size: 18px; transition: color 160ms var(--ease); }
.skill-row p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.skill-row-summary { display: block; margin-top: 7px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.skill-row .arrow { color: var(--accent); font-size: 20px; }
.skill-preview { align-self: start; padding: 26px; background: var(--subtle); }
.skill-preview h2 { margin: 0 0 22px; font-size: 22px; line-height: 1.3; letter-spacing: -0.06em; }
.skill-preview > p { margin: 0 0 18px; color: var(--muted); font-size: 15px; line-height: 1.7; }
.skill-preview dl, .detail-side dl { margin: 0; }
.skill-preview dt, .detail-side dt { margin-top: 16px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; }
.skill-preview dd, .detail-side dd { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 96px; }
.detail-body { max-width: 760px; }
.detail-body h1 { margin: 10px 0 18px; font-size: clamp(38px, 5vw, 64px); line-height: 1.12; letter-spacing: -0.08em; }
.detail-body h2 { margin: 48px 0 14px; font-size: 25px; letter-spacing: -0.06em; }
.detail-body p { margin: 0 0 16px; color: var(--muted); font-size: 18px; }
.summary-panel { margin: 24px 0 36px; padding: 22px 24px; border-left: 3px solid var(--accent); background: var(--subtle); }
.summary-panel .summary-lead { margin: 9px 0 0; color: var(--ink); font-size: 18px; line-height: 1.75; }
.detail-side { align-self: start; padding: 24px; border-top: 2px solid var(--accent); background: var(--subtle); }
.detail-side h2 { margin: 0 0 20px; font-size: 20px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tag { display: inline-flex; min-height: 32px; align-items: center; padding: 5px 9px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 13px; }

.knowledge-architecture { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; margin-bottom: 72px; background: var(--line); border: 1px solid var(--line); }
.architecture-item { min-height: 124px; padding: 18px; background: var(--surface); }
.architecture-item strong { display: block; font-size: 19px; }
.architecture-item span { display: block; margin-top: 10px; color: var(--muted); font-size: 14px; }
.knowledge-grid { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 64px; }
.domain-list { display: grid; align-content: start; gap: 8px; }
.domain-button { padding: 12px 14px; border-left: 3px solid transparent; background: transparent; color: var(--muted); text-align: left; }
.domain-button:hover, .domain-button[aria-pressed="true"] { border-left-color: var(--accent); background: var(--subtle); color: var(--ink); font-weight: 800; }
.domain-card { padding: 26px 0; border-top: 1px solid var(--line); }
.domain-card:last-child { border-bottom: 1px solid var(--line); }
.domain-card h2 { margin: 0 0 5px; font-size: 24px; letter-spacing: -0.06em; }
.domain-card > p { margin: 0 0 18px; color: var(--muted); }
.topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.topic-card { min-height: 168px; padding: 16px; border: 1px solid var(--line); background: var(--surface); text-decoration: none; transition: border-color 160ms var(--ease), transform 160ms var(--ease); }
.topic-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.topic-card strong { display: block; font-size: 16px; }
.topic-card span { display: block; margin-top: 5px; color: var(--muted); font-size: 14px; }
.topic-card p { display: -webkit-box; margin: 9px 0 0; overflow: hidden; color: var(--muted); font-size: 14px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.method-section { margin-top: 78px; padding-top: 32px; border-top: 1px solid var(--line); }
.method-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
.method-list li { min-height: 118px; padding: 15px; background: var(--subtle); }
.method-list strong { display: block; font-size: 16px; }
.method-list span { display: block; margin-top: 12px; color: var(--muted); font-size: 13px; }

.admin-banner { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 36px; padding: 16px 18px; border-left: 3px solid var(--accent); background: var(--subtle); }
.admin-banner p { margin: 0; color: var(--muted); font-size: 14px; }
.admin-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; }
.admin-nav { display: grid; align-content: start; gap: 2px; }
.admin-nav a { padding: 12px 14px; text-decoration: none; }
.admin-nav a:hover, .admin-nav a.active { background: var(--subtle); font-weight: 800; }
.admin-main { max-width: 760px; }
.admin-main h1 { margin: 0 0 12px; font-size: clamp(34px, 4vw, 54px); line-height: 1.15; letter-spacing: -0.08em; }
.admin-main > p { margin: 0 0 28px; color: var(--muted); }
.form-grid { display: grid; gap: 18px; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--line); }
.file-drop { display: grid; min-height: 190px; place-content: center; gap: 8px; padding: 30px; border: 1px dashed var(--control); background: var(--surface); text-align: center; }
.file-drop strong { font-size: 18px; }
.file-drop span { color: var(--muted); font-size: 14px; }
.file-drop input { max-width: 260px; margin: 8px auto 0; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 16px 10px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
.admin-table th { color: var(--muted); font-size: 13px; font-weight: 700; }
.status { display: inline-flex; min-height: 28px; align-items: center; padding: 4px 8px; background: var(--subtle); color: var(--muted); font-size: 12px; font-weight: 800; }
.status.success { background: #e7efe9; color: var(--success); }
.notice { margin: 18px 0 0; padding: 12px 14px; border-left: 3px solid var(--success); background: #e7efe9; color: var(--success); font-size: 14px; }
.notice.error { border-left-color: var(--danger); background: #f6e9e7; color: var(--danger); }
.muted { color: var(--muted); }
.provenance-note { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1100px) {
  :root { --side: 48px; }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(0, min(314px, 32vw)); gap: 54px; }
  .hero-portrait { width: 100%; justify-self: stretch; }
  .system-section, .knowledge-teaser { gap: 56px; }
  .skills-layout { grid-template-columns: 190px minmax(0, 1fr); }
  .skill-preview { grid-column: 2; }
  .method-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  :root { --side: 20px; }
  .site-header { min-height: 70px; }
  .brand { gap: 10px; }
  .brand-name { font-size: 19px; }
  .brand-english { display: none; }
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-menu[open] { display: block; padding: 12px 0 18px; border-bottom: 1px solid var(--line); }
  .mobile-nav { display: grid; gap: 4px; }
  .mobile-nav a { padding: 10px 0; }
  .page { padding: 48px 0 76px; }
  .page-heading { display: block; margin-bottom: 42px; }
  .page-heading h1, .page-heading h2 { font-size: clamp(38px, 12vw, 56px); }
  .page-heading p { margin-top: 18px; font-size: 16px; }
  .hero { display: flex; flex-direction: column; gap: 34px; padding: 40px 0 56px; }
  .hero-portrait { width: 100%; margin-top: 0; }
  .hero h1 { margin-top: 18px; font-size: clamp(56px, 16vw, 72px); }
  .hero-cn-title { font-size: 32px; }
  .hero-intro { margin: 20px 0 26px; font-size: 17px; }
  .button-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .button { width: 100%; }
  .portrait-wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 20px; align-items: center; }
  .portrait-wrap figcaption { margin-top: 0; font-size: 14px; }
  .empty-work { min-height: 270px; padding: 30px; }
  .empty-work h3 { font-size: 31px; }
  .work-meta { display: block; }
  .work-meta span { display: block; margin-top: 8px; }
  .system-section, .knowledge-teaser { display: block; padding: 48px 0; }
  .system-section h2 { margin-bottom: 12px; }
  .stage-list { margin-top: 32px; }
  .stage-list li { grid-template-columns: 30px minmax(0, 1fr); gap: 10px; }
  .stage-list span:last-child { grid-column: 2; margin-top: -7px; font-size: 14px; }
  .knowledge-teaser > div + div { margin-top: 30px; }
  .site-footer { display: grid; align-content: center; justify-content: stretch; gap: 16px; padding: 26px 0; }
  .footer-nav { flex-wrap: wrap; gap: 8px 14px; }
  .resume-layout, .detail-grid, .admin-layout { display: block; }
  .resume-aside { margin-bottom: 54px; }
  .resume-aside .portrait-wrap { grid-template-columns: minmax(0, 1fr); }
  .resume-aside .portrait-wrap figcaption { margin-top: 10px; }
  .resume-block + .resume-block { margin-top: 52px; }
  .timeline-item { display: block; }
  .timeline-date { display: block; margin-bottom: 7px; }
  .work-grid { grid-template-columns: 1fr; }
  .skills-layout { display: block; }
  .category-list, .domain-list { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 8px; margin-bottom: 26px; }
  .category-button, .domain-button { flex: 0 0 auto; min-width: max-content; border: 1px solid var(--line); border-left-width: 1px; background: var(--surface); }
  .category-button[aria-pressed="true"], .domain-button[aria-pressed="true"] { border-color: var(--accent); }
  .category-button[aria-pressed="true"]::before { display: none; }
  .skill-preview { margin-top: 28px; }
  .skill-row { grid-template-columns: minmax(0, 1fr) 20px; }
  .knowledge-architecture { grid-template-columns: repeat(5, minmax(152px, 1fr)); overflow-x: auto; margin-right: calc(var(--side) * -1); margin-left: calc(var(--side) * -1); border-right: 0; border-left: 0; }
  .architecture-item { min-width: 152px; }
  .knowledge-grid { display: block; }
  .knowledge-grid .search-bar { margin-top: 20px; }
  .topic-grid, .form-grid.two { grid-template-columns: 1fr; }
  .method-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-banner { display: block; }
  .admin-banner .button { width: auto; margin-top: 12px; }
  .admin-nav { display: flex; overflow-x: auto; gap: 4px; margin-bottom: 36px; }
  .admin-nav a { flex: 0 0 auto; white-space: nowrap; }
  .admin-table { display: block; overflow-x: auto; white-space: nowrap; }
  .detail-side { margin-top: 46px; }
}

@media (max-width: 380px) {
  .button-row { grid-template-columns: 1fr; }
  .method-list { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 1ms !important; transition-duration: 1ms !important; }
}