/* zodstructor website — Editorial / Magazine direction (human-ui skill)
   Paper background, ink text, one cobalt accent, hairline rules, numbered
   sections, zero radius, zero shadows. Structure comes from rules + whitespace. */
:root {
  --paper: #faf9f6;
  --paper-warm: #f5f1ea;
  --ink: #1a1a1a;
  --ink-70: rgba(26, 26, 26, 0.68);
  --ink-45: rgba(26, 26, 26, 0.45);
  --ink-25: rgba(26, 26, 26, 0.25);
  --rule: rgba(26, 26, 26, 0.14);
  --rule-strong: rgba(26, 26, 26, 0.32);
  --accent: #2541b2;
  --accent-ink: #1c338d;
  --accent-soft: rgba(37, 65, 178, 0.07);
  --ok: #166534;
  --ok-soft: rgba(22, 101, 52, 0.08);
  --display: Georgia, "Times New Roman", "Songti SC", serif;
  --display-zh: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --body: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace;
  --nav-h: 64px;
  --code-bg: #17181d;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--paper); }

.container { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 600; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2 { font-family: var(--display-zh); font-weight: 700; }

.eyebrow-row { display: flex; align-items: baseline; gap: 14px; margin-bottom: 16px; }
.sec-num { font: 400 13px/1 var(--mono); color: var(--ink-45); }
.eyebrow {
  font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .14em;
  color: var(--accent);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 0;
  font: 600 14.5px/1 var(--body); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background .25s, border-color .25s, color .25s;
}
.btn-primary { background: var(--accent); color: var(--paper); }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { border-color: var(--rule-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--nav-h);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.nav.scrolled { border-bottom-color: var(--rule); }
.nav-inner { width: min(1160px, calc(100% - 48px)); margin: 0 auto; height: 100%; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 26px; height: 26px; display: block; }
.brand-name { font: 600 16.5px/1 var(--mono); letter-spacing: -0.02em; }
.brand-badge {
  font: 600 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em;
  color: var(--accent); border: 1px solid var(--accent);
  padding: 3px 6px;
}
.nav-links { display: flex; gap: 2px; margin-left: auto; }
.nav-links a {
  color: var(--ink-70); text-decoration: none; font-size: 13.5px; font-weight: 500;
  padding: 8px 12px; transition: color .2s; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang-switch { display: flex; border: 1px solid var(--rule-strong); }
.lang-btn {
  border: 0; background: transparent; color: var(--ink-70); cursor: pointer;
  font: 600 12px/1 var(--body); padding: 8px 12px; transition: background .2s, color .2s;
}
.lang-btn.active { background: var(--ink); color: var(--paper); }
.nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; flex-direction: column; justify-content: center; padding: calc(var(--nav-h) + 56px) 0 96px; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--mono); letter-spacing: .04em; color: var(--ink-70);
  border: 1px solid var(--rule-strong); padding: 9px 14px; margin-bottom: 32px;
}
.badge-mark { width: 7px; height: 7px; background: var(--accent); }
.hero-title {
  font-size: clamp(52px, 7.2vw, 100px); line-height: 1.02;
  letter-spacing: -0.03em; margin-bottom: 28px;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line-inner { display: block; }
.line-accent { color: var(--accent); font-style: italic; }
html[lang="zh-CN"] .line-accent { font-style: normal; }
.hero-sub { font-size: 17px; color: var(--ink-70); max-width: 520px; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 40px; margin-top: 56px; padding-top: 24px;
  border-top: 1px solid var(--rule); flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num { font: 600 34px/1 var(--mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.stat-label { font: 600 11px/1 var(--mono); color: var(--ink-45); text-transform: uppercase; letter-spacing: .12em; }

.scroll-hint {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-hint-line { width: 1px; height: 56px; background: var(--rule-strong); }
.scroll-hint-text { font: 600 10.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .2em; color: var(--ink-45); writing-mode: vertical-rl; }

/* ---------- code windows (dark instrument block, square) ---------- */
.code-window {
  background: var(--code-bg); border: 1px solid var(--ink);
  border-radius: 0; overflow: hidden;
}
.code-window-bar { display: flex; align-items: center; gap: 7px; padding: 11px 16px; border-bottom: 1px solid #26272e; }
.dot { width: 9px; height: 9px; border-radius: 0; }
.dot.r { background: #e5e5e5; opacity: .3; } .dot.y { background: #e5e5e5; opacity: .3; } .dot.g { background: #e5e5e5; opacity: .3; }
.code-title { margin-left: 8px; font: 500 12px/1 var(--mono); color: #7c7f8c; letter-spacing: .04em; }
.code-body { padding: 18px 20px; font: 13px/1.75 var(--mono); overflow-x: auto; min-height: 120px; white-space: pre; color: #c9d4e6; }
.code-body.sm { padding: 12px 14px; font-size: 12.5px; min-height: 0; }
.code-window.tall .code-body { min-height: 300px; }
.caret { display: inline-block; width: 8px; height: 1.15em; background: #a5b4fc; vertical-align: text-bottom; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* syntax tokens */
.tk-kw { color: #c792ea; } .tk-fn { color: #82aaff; } .tk-str { color: #c3e88d; }
.tk-num { color: #f78c6c; } .tk-com { color: #5c6370; font-style: italic; } .tk-prop { color: #7fdbca; }
.tk-type { color: #ffcb6b; } .tk-op { color: #89ddff; }

/* ---------- marquee ---------- */
.marquee {
  overflow: hidden; white-space: nowrap;
  border-block: 1px solid var(--rule); padding: 14px 0; background: var(--paper);
}
.marquee-track { display: inline-flex; align-items: center; animation: marquee 28s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .18em;
  color: var(--ink-45); padding: 0 8px;
}
.marquee-track i { width: 5px; height: 5px; background: var(--accent); margin: 0 18px; flex: 0 0 auto; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
.section { padding: 120px 0; position: relative; }
.section-alt { background: var(--paper-warm); border-block: 1px solid var(--rule); }
.section-head { max-width: 680px; margin-bottom: 64px; }
.section-head h2, .split-copy h2, .cta-inner h2 {
  font-size: clamp(34px, 4vw, 52px); letter-spacing: -0.025em; line-height: 1.12; margin-bottom: 16px;
}
.section-head p, .split-copy p { color: var(--ink-70); font-size: 16.5px; max-width: 560px; }

/* ---------- features: ruled rows, not cards ---------- */
.feature-list { border-top: 1px solid var(--ink); }
.feature-row {
  display: grid; grid-template-columns: 56px 44px 1fr 1.2fr; gap: 24px; align-items: baseline;
  padding: 26px 0; border-bottom: 1px solid var(--rule);
  transition: background .25s;
}
.feature-row:hover { background: var(--accent-soft); }
.feature-idx { font: 400 13px/1.65 var(--mono); color: var(--ink-45); font-variant-numeric: tabular-nums; }
.feature-icon { color: var(--accent); align-self: center; }
.feature-icon svg { width: 20px; height: 20px; display: block; }
.feature-row h3 { font-size: 21px; letter-spacing: -0.01em; }
.feature-row p { color: var(--ink-70); font-size: 14.5px; }

/* ---------- modes table ---------- */
.modes-table-wrap { border-top: 1px solid var(--ink); overflow-x: auto; }
.modes-table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 720px; }
.modes-table th {
  text-align: left; padding: 14px 20px 14px 0; font: 600 11px/1 var(--mono);
  text-transform: uppercase; letter-spacing: .12em; color: var(--ink-45);
  border-bottom: 1px solid var(--ink);
}
.modes-table th + th, .modes-table td + td { padding-left: 20px; }
.modes-table td { padding: 17px 20px 17px 0; border-bottom: 1px solid var(--rule); color: var(--ink-70); vertical-align: middle; }
.modes-table tbody tr { transition: background .2s; }
.modes-table tbody tr:hover { background: var(--accent-soft); }
.modes-table code { font: 600 13px/1 var(--mono); color: var(--accent); }
.strength { display: block; width: 90px; height: 5px; background: rgba(26, 26, 26, 0.1); }
.strength i { display: block; height: 100%; width: 0; background: var(--accent); }

/* ---------- install ---------- */
.install-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.install-steps { display: flex; flex-direction: column; }
.step { display: flex; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--rule); }
.step:first-child { padding-top: 0; }
.step-num {
  flex: 0 0 34px; height: 34px; display: grid; place-items: center;
  font: 600 14px/1 var(--mono); color: var(--paper); background: var(--ink);
}
.step-body { flex: 1; min-width: 0; }
.step-body h3 { font-size: 20px; margin-bottom: 4px; }
.step-body p { color: var(--ink-70); font-size: 14.5px; margin-bottom: 12px; }
.cmd {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border: 1px solid var(--rule-strong); padding: 11px 14px; margin-bottom: 8px;
  transition: border-color .2s, background .2s;
}
.cmd:hover { border-color: var(--ink); }
.cmd code { font: 13px/1.5 var(--mono); color: var(--ink); word-break: break-all; }
.copy-btn {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border: 1px solid var(--rule-strong); color: var(--ink-70);
  font: 600 11.5px/1 var(--body); padding: 7px 11px; cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.copy-btn:hover { color: var(--paper); background: var(--ink); border-color: var(--ink); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); background: transparent; }

/* ---------- demo ---------- */
.demo { border: 1px solid var(--ink); background: var(--paper); padding: 28px; }
.demo-controls { display: flex; align-items: flex-end; gap: 28px; flex-wrap: wrap; margin-bottom: 24px; }
.demo-field label { display: block; font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--ink-45); margin-bottom: 10px; }
.seg { display: flex; border: 1px solid var(--rule-strong); }
.seg-btn {
  border: 0; background: transparent; color: var(--ink-70); cursor: pointer;
  font: 500 13px/1 var(--body); padding: 10px 16px; transition: background .2s, color .2s;
  border-right: 1px solid var(--rule);
}
.seg-btn:last-child { border-right: 0; }
.seg-btn:hover { color: var(--ink); }
.seg-btn.active { background: var(--ink); color: var(--paper); }
.demo-run { margin-left: auto; }
.demo-run:disabled { opacity: .5; cursor: default; }
.demo-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.demo-panel { border: 1px solid var(--rule-strong); background: var(--paper-warm); padding: 18px; min-width: 0; }
.demo-panel .code-body { background: var(--code-bg); }
.panel-head { display: flex; justify-content: space-between; align-items: center; font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--ink-45); margin-bottom: 12px; }
.panel-head + pre { margin-bottom: 4px; }
.demo-input-text { color: var(--ink-70); font-size: 14.5px; margin-bottom: 20px; min-height: 44px; }
.demo-status { font: 600 10.5px/1 var(--mono); letter-spacing: .06em; padding: 4px 10px; border: 1px solid var(--rule-strong); color: var(--ink-70); }
.demo-status.running { border-color: var(--accent); color: var(--accent); }
.demo-status.done { border-color: var(--ok); color: var(--ok); }
.demo-stream { min-height: 180px; max-height: 260px; overflow-y: auto; color: #a9c1de; }
.demo-result { display: none; margin-top: 16px; }
.demo-result.show { display: block; }
.result-badge {
  display: inline-flex; align-items: center; gap: 8px; font: 600 12.5px/1 var(--body);
  color: var(--ok); border: 1px solid var(--ok); background: var(--ok-soft);
  padding: 8px 14px; margin-bottom: 12px;
}
.result-type { font: 12px/1.7 var(--mono); color: var(--ink-70); background: var(--paper); border: 1px solid var(--rule-strong); padding: 12px 14px; white-space: pre-wrap; }

/* ---------- split (streaming) ---------- */
.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: center; }
.split-copy p { margin-bottom: 16px; }
.check-list { list-style: none; margin-top: 20px; border-top: 1px solid var(--rule); }
.check-list li {
  display: flex; align-items: baseline; gap: 12px; padding: 12px 0;
  border-bottom: 1px solid var(--rule); color: var(--ink-70); font-size: 14.5px;
}
.check-list li::before { content: "→"; color: var(--accent); font-family: var(--mono); flex: 0 0 auto; }

/* ---------- docs: ruled link rows ---------- */
.doc-list { border-top: 1px solid var(--ink); }
.doc-row {
  display: grid; grid-template-columns: 1fr 1.2fr 32px; gap: 24px; align-items: baseline;
  padding: 22px 0; border-bottom: 1px solid var(--rule);
  text-decoration: none; color: var(--ink); transition: background .25s;
}
.doc-row:hover { background: var(--accent-soft); }
.doc-row h3 { font-size: 19px; }
.doc-row p { color: var(--ink-70); font-size: 14px; }
.doc-arrow {
  font-family: var(--mono); font-size: 16px; color: var(--accent); justify-self: end;
  transition: transform .25s;
}
.doc-row:hover .doc-arrow { transform: translateX(6px); }

/* ---------- faq ---------- */
.faq-list { max-width: 820px; border-top: 1px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  cursor: pointer; list-style: none; padding: 20px 0;
  font-family: var(--display); font-size: 19px; font-weight: 600; letter-spacing: -0.01em;
  transition: color .2s;
}
html[lang="zh-CN"] .faq-item summary { font-family: var(--display-zh); }
.faq-item summary:hover { color: var(--accent); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font: 400 20px/1 var(--mono); color: var(--ink-45); flex: 0 0 auto;
  transition: transform .25s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--ink-70); font-size: 15px; padding: 0 48px 22px 0; max-width: 720px; }

/* ---------- cta ---------- */
.cta { padding: 140px 0; border-top: 1px solid var(--rule); background: var(--paper-warm); }
.cta-inner { max-width: 760px; }
.cta-inner h2 { font-size: clamp(38px, 5vw, 64px); }
.cta-inner p { color: var(--ink-70); margin: 14px 0 34px; font-size: 17px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--ink); padding: 44px 0; background: var(--paper); }
.footer-inner { display: flex; align-items: baseline; gap: 32px; flex-wrap: wrap; }
.footer-brand p { color: var(--ink-45); font-size: 13px; margin-top: 6px; }
.footer-links { display: flex; gap: 24px; margin-left: auto; }
.footer-links a { color: var(--ink-70); text-decoration: none; font-size: 13.5px; transition: color .2s; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { width: 100%; color: var(--ink-45); font-size: 12px; font-family: var(--mono); margin-top: 12px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  font: 500 13px/1 var(--body); padding: 12px 20px;
  opacity: 0; pointer-events: none; z-index: 200;
}

/* ---------- page-load curtain (created by JS, removed after intro) ---------- */
.page-curtain {
  position: fixed; inset: 0; z-index: 300;
  background: var(--paper); border-bottom: 1px solid var(--rule-strong);
  pointer-events: none;
}

/* ---------- docs pages ---------- */
.docs-layout {
  display: grid; grid-template-columns: 260px 1fr; gap: 64px;
  padding: calc(var(--nav-h) + 48px) 0 120px; align-items: start;
}
.docs-side { position: sticky; top: calc(var(--nav-h) + 32px); }
.docs-back {
  display: inline-block; font: 600 12.5px/1 var(--mono); color: var(--ink-70);
  text-decoration: none; margin-bottom: 28px; transition: color .2s;
}
.docs-back:hover { color: var(--accent); }
.docs-side-title {
  font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .14em;
  color: var(--ink-45); margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--ink);
}
.docs-nav { display: flex; flex-direction: column; }
.docs-nav a {
  padding: 10px 0 10px 14px; border-left: 1px solid var(--rule);
  color: var(--ink-70); text-decoration: none; font-size: 14px; transition: color .2s, border-color .2s;
}
.docs-nav a:hover { color: var(--ink); }
.docs-nav a.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }
.docs-source {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 24px;
  font: 500 12.5px/1 var(--body); color: var(--ink-45); text-decoration: none; transition: color .2s;
}
.docs-source:hover { color: var(--accent); }

.docs-main { min-width: 0; }
.doc-content { max-width: 760px; }
.doc-content > h1 {
  font-size: clamp(30px, 3.4vw, 42px); letter-spacing: -0.025em; line-height: 1.15;
  padding-bottom: 20px; margin-bottom: 28px; border-bottom: 1px solid var(--ink);
}
.doc-content h2 {
  font-size: 24px; letter-spacing: -0.015em; margin: 44px 0 14px;
  padding-top: 28px; border-top: 1px solid var(--rule);
}
.doc-content h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.doc-content h3 { font-size: 18px; margin: 28px 0 10px; }
.doc-content p { color: var(--ink-70); font-size: 15.5px; margin-bottom: 14px; }
.doc-content ul, .doc-content ol { color: var(--ink-70); font-size: 15.5px; margin: 0 0 14px 22px; }
.doc-content li { margin-bottom: 6px; }
.doc-content li::marker { color: var(--accent); }
.doc-content blockquote {
  border-left: 2px solid var(--accent); padding: 4px 0 4px 18px; margin: 0 0 14px;
  color: var(--ink-70); font-size: 15.5px;
}
.doc-content code {
  font: 0.88em var(--mono); color: var(--accent);
  background: var(--accent-soft); padding: 2px 6px;
}
.doc-content pre.code-body { margin: 6px 0 20px; border: 1px solid var(--ink); }
.doc-content pre.code-body code { background: none; padding: 0; color: #c9d4e6; font-size: 13px; }
.doc-content .doc-table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 6px 0 20px; }
.doc-content .doc-table th {
  text-align: left; padding: 10px 16px 10px 0; font: 600 11px/1.4 var(--mono);
  text-transform: uppercase; letter-spacing: .1em; color: var(--ink-45);
  border-bottom: 1px solid var(--ink);
}
.doc-content .doc-table td { padding: 11px 16px 11px 0; border-bottom: 1px solid var(--rule); color: var(--ink-70); vertical-align: top; }
.doc-content .doc-table td + td, .doc-content .doc-table th + th { padding-left: 16px; }
.doc-content hr { border: 0; border-top: 1px solid var(--rule); margin: 36px 0; }

@media (max-width: 860px) {
  .docs-layout { grid-template-columns: 1fr; gap: 32px; padding-top: calc(var(--nav-h) + 32px); }
  .docs-side { position: static; }
  .docs-nav { flex-direction: row; flex-wrap: wrap; gap: 4px 18px; }
  .docs-nav a { border-left: 0; border-bottom: 1px solid var(--rule); padding: 8px 0; }
  .docs-nav a.active { border-bottom-color: var(--accent); }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .install-grid, .split, .demo-panels { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .feature-row { grid-template-columns: 40px 36px 1fr; }
  .feature-row p { grid-column: 3; }
  .doc-row { grid-template-columns: 1fr 32px; }
  .doc-row p { grid-column: 1; grid-row: 2; }
  .doc-arrow { grid-row: 1; grid-column: 2; }
}
@media (max-width: 640px) {
  .nav-links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; background: var(--paper); padding: 12px;
    border-bottom: 1px solid var(--rule);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-actions .btn-ghost { display: none; }
  .section { padding: 80px 0; }
  .demo-run { margin-left: 0; width: 100%; justify-content: center; }
  .hero-stats { gap: 24px; }
  .footer-links { margin-left: 0; width: 100%; }
  .scroll-hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}