:root {
  --ink:#111827;
  --muted:#64748b;
  --line:#dfe7ef;
  --paper:#ffffff;
  --soft:#f5f8fb;
  --blue:#07275b;
  --blue-2:#1457d9;
  --green:#11a38a;
  --cyan:#e9fbf7;
  --amber:#f3a533;
  --shadow:0 20px 60px rgba(8, 26, 55, .11);
}
* { box-sizing:border-box; }
html, body { max-width:100%; }
body { margin:0; color:var(--ink); background:linear-gradient(180deg,#f1f6fb 0,#ffffff 380px); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif; line-height:1.7; }
a { color:inherit; text-decoration:none; }
.site-header { position:sticky; top:0; z-index:20; display:flex; align-items:center; justify-content:space-between; gap:24px; padding:16px 34px; background:rgba(255,255,255,.88); backdrop-filter:blur(18px); border-bottom:1px solid rgba(210,221,232,.8); }
.brand { display:flex; align-items:center; gap:14px; min-width:430px; }
.brand-person, .company-lockup { display:flex; align-items:center; gap:10px; }
.brand-divider { width:1px; height:34px; background:#dbe5ef; }
.brand-mark { display:block; width:46px; height:46px; border-radius:14px; overflow:hidden; background:#fff; border:1px solid #d5e1ee; box-shadow:0 8px 22px rgba(8, 26, 55, .08); flex:0 0 auto; }
.brand-mark img { display:block; width:100%; height:100%; object-fit:cover; }
.company-mark { width:42px; height:42px; flex:0 0 auto; }
.brand strong { display:block; color:var(--blue); font-size:18px; line-height:1.1; }
.brand small { color:var(--muted); font-size:12px; }
.nav { display:flex; gap:8px; flex-wrap:wrap; justify-content:flex-end; }
.nav a { padding:9px 13px; border-radius:999px; color:#42526a; font-size:14px; }
.nav a:hover, .nav a.active { background:#e9f1ff; color:var(--blue); }
main { width:min(1180px, calc(100% - 42px)); margin:0 auto; }
.page-hero { padding:78px 0 38px; }
.kicker, .eyebrow { text-transform:uppercase; letter-spacing:.12em; color:var(--green); font-size:12px; font-weight:800; margin:0 0 14px; }
.page-hero h1 { font-size:clamp(38px, 6vw, 76px); line-height:1.02; margin:0 0 20px; color:var(--blue); max-width:980px; }
.page-hero p { max-width:780px; font-size:18px; color:#42526a; margin:0; }
.content-section { margin:34px 0; padding:32px; border:1px solid var(--line); border-radius:24px; background:rgba(255,255,255,.9); box-shadow:var(--shadow); }
.section-head { display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:22px; }
.section-head h2 { font-size:30px; margin:0; color:var(--blue); }
.section-head p { margin:0; color:var(--muted); max-width:640px; }
.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.stat-card, .feature-card, .insight-card { border:1px solid var(--line); border-radius:20px; background:#fff; padding:22px; }
.stat-card span { color:var(--muted); font-size:13px; }
.stat-card strong { display:block; color:var(--blue); font-size:32px; line-height:1.1; margin:8px 0; }
.stat-card p, .feature-card p, .insight-card p { color:#526174; margin:0; }
.card-grid { display:grid; gap:16px; }
.card-grid.three { grid-template-columns:repeat(3,1fr); }
.card-grid.two { grid-template-columns:repeat(2,1fr); }
.feature-card { transition:transform .18s ease, border-color .18s ease; }
.feature-card:hover { transform:translateY(-3px); border-color:#b9c9e8; }
.feature-card h3 { margin:12px 0 8px; color:var(--blue); font-size:20px; }
.chip { display:inline-flex; width:max-content; padding:4px 10px; border-radius:999px; background:var(--cyan); color:#087c6a; font-size:12px; font-weight:700; }
.visual-panel { display:grid; grid-template-columns:1fr 1fr; gap:18px; align-items:stretch; }
.panel { border-radius:22px; padding:24px; background:linear-gradient(135deg,#f7fbff,#eef8f6); border:1px solid #dce8f3; }
.wide-panel { grid-column:1 / -1; }
.panel h3 { margin:0 0 14px; color:var(--blue); }
.bars { display:grid; gap:13px; }
.bar-row { display:grid; grid-template-columns:160px 1fr 56px; gap:12px; align-items:center; font-size:14px; color:#40516a; }
.bar-track { height:12px; border-radius:999px; background:#e5ecf4; overflow:hidden; }
.bar-track i { display:block; height:100%; border-radius:999px; }
.stack-chart { display:grid; gap:16px; }
.stack-row { display:grid; grid-template-columns:90px 1fr; gap:12px; align-items:center; }
.stack { height:22px; border-radius:999px; display:flex; overflow:hidden; background:#e7edf5; }
.stack span { display:block; height:100%; }
.legend { display:flex; flex-wrap:wrap; gap:10px 16px; margin-top:6px; color:#53657b; font-size:13px; }
.legend span { display:inline-flex; align-items:center; gap:6px; }
.legend i { display:inline-block; width:11px; height:11px; border-radius:3px; }
.roadmap { display:grid; gap:14px; counter-reset:item; }
.roadmap li { list-style:none; display:grid; grid-template-columns:48px 1fr; gap:14px; align-items:start; padding:16px; background:#fff; border:1px solid var(--line); border-radius:18px; }
.roadmap li::before { counter-increment:item; content:counter(item); display:grid; place-items:center; width:40px; height:40px; border-radius:14px; background:var(--blue); color:#fff; font-weight:800; }
.doc-shell { display:grid; grid-template-columns:260px minmax(0,1fr); gap:28px; align-items:start; padding:34px 0 70px; }
.toc { position:sticky; top:92px; padding:20px; border:1px solid var(--line); border-radius:20px; background:#fff; max-height:calc(100vh - 120px); overflow:auto; }
.toc h2 { margin:14px 0 10px; font-size:18px; color:var(--blue); }
.toc a { display:block; padding:7px 0; color:#526174; font-size:14px; border-bottom:1px solid #eef2f6; }
.toc .toc-level-3 { padding-left:14px; font-size:13px; }
.back-link { color:var(--blue)!important; font-weight:700; }
.article { min-width:0; padding:38px; background:#fff; border:1px solid var(--line); border-radius:24px; box-shadow:var(--shadow); }
.article h1 { color:var(--blue); font-size:38px; line-height:1.15; margin:0 0 18px; }
.article h2 { margin-top:42px; padding-top:20px; border-top:1px solid #edf2f7; color:var(--blue); font-size:28px; }
.article h3 { margin-top:28px; color:#17396d; font-size:21px; }
.article p { color:#34445a; }
.article ul, .article ol { padding-left:22px; color:#34445a; }
blockquote { margin:18px 0; padding:16px 20px; border-left:5px solid var(--green); background:#f0fbf8; color:#17396d; border-radius:10px; }
code { background:#f0f4f8; border:1px solid #d9e4ee; border-radius:6px; padding:2px 6px; font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.92em; }
pre { overflow:auto; padding:18px; background:#0d1b2f; color:#eef7ff; border-radius:16px; }
.table-wrap { overflow:auto; border:1px solid var(--line); border-radius:16px; margin:18px 0; }
table { border-collapse:collapse; width:100%; min-width:720px; font-size:14px; background:#fff; }
th, td { padding:12px 14px; border-bottom:1px solid #e7edf4; text-align:left; vertical-align:top; }
th { background:#f5f8fc; color:var(--blue); font-weight:800; }
tr:last-child td { border-bottom:0; }
.doc-image { margin:24px 0; padding:12px; border:1px solid var(--line); border-radius:18px; background:#fbfdff; }
.doc-image img { display:block; width:100%; border-radius:12px; }
.doc-image figcaption { text-align:center; color:var(--muted); font-size:13px; margin-top:8px; }
.image-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:18px; }
.image-grid figure { margin:0; }
.design-system-board { padding:12px; border-radius:26px; border:1px solid #d8e5f1; background:#fff; }
.design-system-board > img { display:block; width:100%; border-radius:18px; box-shadow:0 18px 46px rgba(15, 37, 68, .10); }
.ds-header { display:flex; justify-content:space-between; align-items:flex-start; gap:24px; margin-bottom:24px; }
.ds-header h3 { margin:0 0 8px; font-size:30px; color:var(--blue); }
.ds-header p { margin:0; color:#5b6b82; max-width:680px; }
.ds-badge { padding:8px 12px; border-radius:999px; background:#e9fbf7; color:#087c6a; font-weight:800; font-size:12px; white-space:nowrap; }
.ds-grid { display:grid; grid-template-columns:1.15fr .85fr; gap:18px; align-items:start; }
.ds-card { border:1px solid #dce6f0; border-radius:22px; background:#fff; padding:22px; box-shadow:0 14px 36px rgba(9,35,77,.08); }
.ds-card h4 { margin:0 0 16px; color:var(--blue); font-size:20px; }
.ds-card small { color:var(--muted); }
.token-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
.token { min-height:132px; border-radius:18px; overflow:hidden; border:1px solid #dce6f0; background:#fff; }
.token i { display:block; height:70px; }
.token div { padding:10px 12px; }
.token b { display:block; color:#13243a; font-size:14px; }
.token code { margin-top:3px; display:inline-block; }
.type-scale { display:grid; gap:14px; }
.type-item { display:grid; grid-template-columns:110px 1fr 92px; gap:14px; align-items:baseline; padding-bottom:12px; border-bottom:1px solid #edf2f7; }
.type-item:last-child { border-bottom:0; }
.type-item span { color:#65758b; font-size:13px; }
.type-item b { color:var(--blue); line-height:1.1; }
.type-item em { color:#66768c; font-style:normal; font-size:13px; text-align:right; }
.icon-board { display:grid; grid-template-columns:repeat(6,1fr); gap:10px; }
.icon-cell { display:grid; place-items:center; gap:8px; min-height:92px; border-radius:18px; background:#f7fbff; border:1px solid #dce6f0; color:var(--blue); font-size:12px; }
.icon-cell svg, .component-icon svg { width:26px; height:26px; fill:none; stroke:currentColor; stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round; }
.spacing-board { display:grid; gap:10px; }
.spacing-row { display:grid; grid-template-columns:50px 1fr 70px; gap:12px; align-items:center; color:#526174; font-size:13px; }
.spacing-track { height:12px; background:#e8eef5; border-radius:999px; overflow:hidden; }
.spacing-track span { display:block; height:100%; border-radius:999px; background:var(--green); }
.component-showcase { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.component-card { border:1px solid #dce6f0; border-radius:20px; background:#fff; padding:18px; }
.button-row { display:flex; flex-wrap:wrap; gap:10px; margin-bottom:14px; }
.btn-demo { display:inline-flex; align-items:center; justify-content:center; min-height:44px; padding:0 18px; border-radius:12px; font-weight:800; border:1px solid transparent; }
.btn-demo.primary { background:var(--blue); color:#fff; }
.btn-demo.secondary { border-color:#bed0e2; color:var(--blue); background:#fff; }
.btn-demo.ghost { background:#eef6ff; color:var(--blue); }
.input-demo { display:flex; align-items:center; gap:10px; height:48px; padding:0 14px; border:1px solid #d5e1ee; border-radius:14px; color:#7a8aa0; background:#fbfdff; }
.task-demo { display:grid; grid-template-columns:52px 1fr; gap:14px; padding:16px; border:1px solid #dce6f0; border-radius:18px; background:#f8fbff; }
.component-icon { display:grid; place-items:center; width:52px; height:52px; border-radius:16px; background:#e9f4ff; color:var(--blue); }
.task-demo h5 { margin:0 0 4px; color:var(--blue); font-size:16px; }
.task-demo p { margin:0 0 10px; color:#607086; font-size:13px; }
.chip-row { display:flex; gap:8px; flex-wrap:wrap; }
.tag-demo { padding:4px 9px; border-radius:999px; background:#e9fbf7; color:#087c6a; font-size:12px; font-weight:800; }
.empty-demo { text-align:center; padding:22px; border:1px dashed #bfd0e2; border-radius:18px; background:#fbfdff; }
.empty-demo .empty-icon { width:54px; height:54px; margin:0 auto 10px; border-radius:18px; background:#eef6ff; display:grid; place-items:center; color:var(--blue); }
.empty-demo b { display:block; color:var(--blue); }
.empty-demo p { margin:6px auto 14px; max-width:280px; color:#607086; font-size:13px; }
.table-demo { width:100%; min-width:0; font-size:13px; }
.table-demo th, .table-demo td { padding:9px 10px; }
.ds-web-board { padding:24px; background:#f8fafc; border-color:#d9e4ee; }
.ds-board-header { display:flex; justify-content:space-between; align-items:flex-start; gap:20px; padding:8px 4px 20px; }
.ds-title-lockup { display:flex; align-items:center; gap:14px; }
.ds-logo { width:58px; height:58px; flex:0 0 auto; }
.ds-board-header h3 { margin:0; color:#06285b; font-size:32px; line-height:1.1; }
.ds-board-header p { margin:6px 0 0; color:#64748b; font-size:14px; }
.ds-principle { padding:10px 16px; border-radius:14px; background:#e6f7f4; color:#087c6a; font-weight:800; white-space:nowrap; }
.ds-layout { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.ds-panel { border:1px solid #d9e4ee; border-radius:18px; background:#fff; padding:18px; box-shadow:0 10px 28px rgba(15, 37, 68, .06); }
.ds-panel-wide { min-height:250px; }
.ds-panel-components { grid-column:1 / -1; }
.ds-panel-table { grid-column:1 / 2; }
.ds-panel-radius { grid-column:2 / 3; }
.ds-panel-title { display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.ds-panel-title span { color:#06285b; font-weight:900; }
.ds-panel-title h4 { margin:0; color:#06285b; font-size:18px; }
.token-palette { display:grid; grid-template-columns:repeat(3, minmax(0, 1fr)); gap:14px; }
.token-card { display:grid; gap:6px; min-width:0; }
.token-card i { display:block; height:70px; border-radius:10px; border:1px solid rgba(6, 40, 91, .12); box-shadow:inset 0 0 0 1px rgba(255,255,255,.25); }
.token-card b { color:#10233f; font-size:13px; }
.token-card code { width:max-content; max-width:100%; color:#06285b; background:#eef4fb; border-color:#d8e3ee; }
.token-card p { margin:0; color:#53657b; font-size:12px; line-height:1.55; }
.semantic-strip { display:flex; flex-wrap:wrap; gap:16px; margin-top:18px; padding-top:14px; border-top:1px solid #e6edf4; color:#53657b; font-size:13px; }
.semantic-strip span { display:inline-flex; align-items:center; gap:8px; }
.semantic-strip i { width:12px; height:12px; border-radius:50%; }
.typography-table { display:grid; gap:0; }
.typography-table > div { display:grid; grid-template-columns:80px minmax(160px, 1fr) 90px 132px; align-items:center; gap:14px; padding:12px 0; border-bottom:1px solid #e6edf4; }
.typography-table > div:last-child { border-bottom:0; }
.typography-table small, .typography-table span { color:#64748b; }
.typography-table strong { color:#06285b; line-height:1.1; }
.typography-table em { color:#42526a; font-style:normal; font-size:13px; }
.type-display { font-size:34px; }
.type-h1 { font-size:26px; }
.type-h2 { font-size:20px; }
.type-body { font-size:15px; color:#34445a!important; }
.type-caption { font-size:13px; color:#64748b!important; }
.ds-note { margin:-6px 0 14px; color:#64748b; font-size:13px; }
.component-preview { display:grid; grid-template-columns:1fr 1.25fr 1.25fr 1.25fr; border:1px solid #e1e9f2; border-radius:16px; overflow:hidden; }
.component-preview > div { padding:18px; border-right:1px solid #e1e9f2; min-width:0; }
.component-preview > div:last-child { border-right:0; }
.component-preview h5 { margin:0 0 12px; color:#06285b; font-size:14px; }
.component-preview p { margin:12px 0 0; color:#64748b; font-size:12px; }
.tag-blue { background:#e9f2ff; color:#0b63ce; }
.radius-grid { display:grid; grid-template-columns:repeat(5, 1fr); gap:14px; text-align:center; color:#53657b; }
.radius-grid span { display:block; width:58px; height:58px; margin:0 auto; border:1px solid #cfddea; background:#f8fafc; box-shadow:inset 0 0 0 1px #fff; }
.radius-grid b { display:block; color:#06285b; }
.radius-grid em { font-style:normal; font-size:12px; }
.panel p { color:#526174; margin:0 0 12px; }
.panel p:last-child { margin-bottom:0; }
.panel-note { padding:12px 14px; border:1px solid #d9e7f2; border-radius:14px; background:#fff; color:#36506d!important; }
.panel-action { margin-top:16px!important; }
.panel-action a { display:inline-flex; padding:9px 12px; border-radius:12px; background:var(--blue); color:#fff; font-weight:800; font-size:13px; }
.api-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.api-card { padding:22px; border:1px solid var(--line); border-radius:20px; background:#fff; box-shadow:0 14px 34px rgba(8,26,55,.06); }
.api-card span { display:inline-flex; padding:5px 10px; border-radius:999px; background:#e9fbf7; color:#087c6a; font-size:12px; font-weight:800; }
.api-card h3 { margin:14px 0 8px; color:var(--blue); font-size:21px; }
.api-card p { margin:0 0 16px; color:#526174; }
.api-card b { display:block; color:#17396d; font-size:13px; }
.seo-check-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
.seo-check-grid div { padding:16px; border:1px solid var(--line); border-radius:16px; background:#fff; }
.seo-check-grid b { display:block; color:var(--blue); margin-bottom:6px; }
.seo-check-grid p { margin:0; color:#526174; font-size:13px; }
.term-cluster { display:grid; gap:10px; }
.term-cluster article { padding:14px 16px; border:1px solid var(--line); border-radius:16px; background:#fff; }
.term-cluster b { display:block; color:var(--blue); margin-bottom:5px; }
.term-cluster span { color:#53657b; font-size:13px; }
.compact-list { display:grid; gap:10px; margin:0; padding-left:20px; color:#34445a; }
.compact-list li { padding:10px 12px; border:1px solid var(--line); border-radius:14px; background:#fff; }
.content-template { display:grid; grid-template-columns:repeat(5,1fr); gap:12px; }
.content-template div { padding:16px; border:1px solid var(--line); border-radius:16px; background:#fff; }
.content-template span { color:#087c6a; font-size:12px; font-weight:900; }
.content-template b { display:block; color:var(--blue); margin:7px 0; }
.content-template p { margin:0; color:#526174; font-size:13px; }
.link-map { display:grid; gap:14px; padding:14px; border:1px solid var(--line); border-radius:18px; background:#fff; }
.link-node { display:grid; place-items:center; min-height:58px; border-radius:16px; font-weight:900; }
.link-node.core { background:#06285b; color:#fff; }
.link-row { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
.link-row span { display:grid; place-items:center; min-height:46px; border-radius:14px; background:#e9fbf7; color:#087c6a; font-weight:800; font-size:13px; text-align:center; padding:8px; }
.link-row.muted span { background:#f3f6fa; color:#53657b; }
.metric-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.metric-grid div { padding:16px; border:1px solid var(--line); border-radius:16px; background:#fff; }
.metric-grid span { color:#13a68b; font-weight:900; font-size:12px; }
.metric-grid b { display:block; margin:6px 0; color:var(--blue); }
.metric-grid p { color:#53657b; font-size:13px; margin:0; }
.system-flow { display:grid; grid-template-columns:repeat(5,1fr); gap:12px; margin:0; padding:0; counter-reset:flow; }
.system-flow li { list-style:none; padding:18px; border:1px solid var(--line); border-radius:18px; background:#fff; min-height:150px; }
.system-flow li::before { counter-increment:flow; content:counter(flow, decimal-leading-zero); display:inline-flex; margin-bottom:10px; color:#087c6a; font-size:12px; font-weight:900; }
.system-flow b { display:block; color:var(--blue); margin-bottom:6px; }
.system-flow p { margin:0; color:#526174; font-size:13px; }
.dashboard-shell { display:grid; grid-template-columns:210px 1fr; min-height:500px; border:1px solid #d8e5f1; border-radius:24px; overflow:hidden; background:#fff; box-shadow:var(--shadow); }
.dashboard-shell aside { padding:24px; background:#06285b; color:#fff; display:grid; align-content:start; gap:12px; }
.dashboard-shell aside b { margin-bottom:14px; font-size:18px; }
.dashboard-shell aside span { padding:9px 12px; border-radius:12px; background:rgba(255,255,255,.08); color:#dcecff; }
.dashboard-main { padding:24px; background:#f7fafc; }
.dashboard-kpis { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-bottom:16px; }
.dashboard-kpis article { padding:16px; border:1px solid #dce6f0; border-radius:18px; background:#fff; }
.dashboard-kpis span { color:#64748b; font-size:12px; }
.dashboard-kpis b { display:block; color:#06285b; font-size:28px; line-height:1.1; margin:8px 0; }
.dashboard-kpis em { color:#087c6a; font-style:normal; font-weight:800; font-size:12px; }
.dashboard-panels { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.dashboard-panels section { padding:20px; border:1px solid #dce6f0; border-radius:20px; background:#fff; }
.dashboard-panels h3 { margin:0 0 16px; color:#06285b; }
.funnel-bars { display:grid; gap:11px; }
.funnel-bars p { margin:0; display:grid; grid-template-columns:1fr 120px; gap:12px; align-items:center; }
.funnel-bars span { display:block; height:18px; border-radius:999px; background:linear-gradient(90deg,#14b8a6,#0b63ce); }
.funnel-bars b { color:#42526a; font-size:13px; }
.page-score-list { display:grid; gap:10px; }
.page-score-list p { display:grid; gap:4px; margin:0; padding:12px; border-radius:14px; background:#f7fbff; border:1px solid #e2eaf3; }
.page-score-list b { color:#06285b; }
.page-score-list span { color:#53657b; font-size:13px; }
.mini-list { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.mini-list div { padding:16px; border-radius:16px; border:1px solid var(--line); background:#fff; }
.mini-list b { color:var(--blue); }
.doc-list { display:grid; gap:14px; }
.doc-list a { display:grid; grid-template-columns:1fr auto; gap:16px; padding:18px 20px; border:1px solid var(--line); border-radius:18px; background:#fff; }
.doc-list h3 { margin:0 0 6px; color:var(--blue); }
.doc-list p { margin:0; color:#53657b; }
.tree { font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; background:#0d1b2f; color:#e7f1ff; border-radius:18px; padding:20px; overflow:auto; }
.site-footer { width:min(1180px, calc(100% - 42px)); margin:30px auto 0; padding:28px 0 42px; display:flex; justify-content:space-between; gap:18px; color:#6b7c90; border-top:1px solid #dfe7ef; }
@media (max-width: 920px) {
  .site-header { align-items:flex-start; flex-direction:column; }
  .nav { justify-content:flex-start; }
  .stat-grid, .card-grid.three, .card-grid.two, .visual-panel, .image-grid, .mini-list, .system-specs, .ds-grid, .component-showcase, .token-grid, .ds-layout, .api-grid, .dashboard-shell, .dashboard-kpis, .dashboard-panels, .metric-grid, .system-flow, .seo-check-grid, .content-template, .link-row { grid-template-columns:1fr; }
  .wide-panel, .ds-panel-components, .ds-panel-table, .ds-panel-radius { grid-column:auto; }
  .token-palette { grid-template-columns:repeat(3, minmax(0, 1fr)); }
  .component-preview { grid-template-columns:1fr 1fr; }
  .component-preview > div { border-right:0; border-bottom:1px solid #e1e9f2; }
  .doc-shell { grid-template-columns:1fr; }
  .toc { position:relative; top:auto; max-height:none; }
  .article { padding:24px; }
}
@media (max-width: 640px) {
  body { overflow-x:hidden; }
  p, h1, h2, h3, h4, h5, li, td, th, span, small, b { overflow-wrap:anywhere; }
  .content-section, .design-system-board, .ds-card, .component-card, .article, .panel, .feature-card, .doc-list a, .ds-header > div { min-width:0; }
  main, .site-footer { width:min(100% - 24px, 1180px); }
  .site-header { padding:14px 16px; gap:14px; }
  .brand { min-width:0; }
  .brand { flex-wrap:wrap; }
  .brand-divider { display:none; }
  .company-lockup { width:100%; padding-left:56px; }
  .nav { width:100%; overflow-x:visible; flex-wrap:wrap; padding-bottom:0; }
  .nav a { flex:0 1 auto; }
  .page-hero { padding:58px 0 30px; }
  .page-hero h1 { font-size:30px; line-height:1.14; overflow-wrap:anywhere; }
  .page-hero p { font-size:16px; }
  .content-section { padding:20px; border-radius:20px; overflow:hidden; }
  .section-head h2 { font-size:24px; overflow-wrap:anywhere; }
  .design-system-board { padding:16px; border-radius:22px; }
  .ds-web-board { padding:14px; }
  .ds-board-header { flex-direction:column; }
  .ds-title-lockup { align-items:flex-start; }
  .ds-board-header h3 { font-size:24px; }
  .ds-principle { white-space:normal; }
  .token-palette, .component-preview, .radius-grid { grid-template-columns:1fr; }
  .typography-table > div { grid-template-columns:1fr; gap:6px; }
  .component-preview > div:last-child { border-bottom:0; }
  .ds-header { flex-direction:column; gap:14px; }
  .ds-header h3 { font-size:26px; line-height:1.2; overflow-wrap:anywhere; }
  .ds-badge { white-space:normal; }
  .ds-card { padding:16px; }
  .type-item { grid-template-columns:1fr; gap:6px; align-items:start; }
  .type-item em { text-align:left; }
  .icon-board { grid-template-columns:repeat(2,1fr); }
  .spacing-row { grid-template-columns:34px 1fr; }
  .spacing-row em { grid-column:2; }
  .btn-demo { flex:1 1 auto; }
  .input-demo span:last-child { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .doc-list a { grid-template-columns:1fr; }
}