:root {
  color-scheme: dark;
  --bg: #0b0d0c;
  --bg-elevated: #111412;
  --surface: #151916;
  --surface-2: #1a201c;
  --surface-3: #222a24;
  --ink: #f4f2e9;
  --ink-soft: #c2c4ba;
  --ink-muted: #858b82;
  --line: #2a312c;
  --line-strong: #3c463f;
  --accent: #c7ff4a;
  --accent-ink: #101407;
  --accent-soft: rgba(199, 255, 74, 0.12);
  --orange: #ff8b54;
  --cyan: #59d9ce;
  --purple: #af9cff;
  --danger: #ff7069;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --shell: 1180px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f3eb;
  --bg-elevated: #fbfaf5;
  --surface: #ffffff;
  --surface-2: #eeece3;
  --surface-3: #e3e2d8;
  --ink: #111410;
  --ink-soft: #3f463f;
  --ink-muted: #6b736b;
  --line: #d7d8cf;
  --line-strong: #bdc2b7;
  --accent: #78a900;
  --accent-ink: #ffffff;
  --accent-soft: rgba(120, 169, 0, 0.1);
  --orange: #ca5927;
  --cyan: #087f78;
  --purple: #6b54c6;
  --danger: #c93e38;
  --shadow: 0 24px 70px rgba(30, 38, 31, 0.12);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 82% 10%, rgba(199, 255, 74, 0.055), transparent 24rem),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(128, 140, 128, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(128, 140, 128, 0.055) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 50rem);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
img { max-width: 100%; }
code, pre, kbd { font-family: var(--font-mono); }

::selection { background: var(--accent); color: var(--accent-ink); }

.shell {
  width: min(calc(100% - 40px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  transform: translateY(-150%);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.skip-link:focus { transform: translateY(0); }

.reading-progress {
  position: fixed;
  z-index: 1001;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
}

.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 72px;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
  font-weight: 740;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 7px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
  transform: rotate(-3deg);
}

.brand-name span { color: var(--ink-muted); font-weight: 520; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-left: auto;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 620;
  transition: color 160ms ease;
}

.site-nav a:hover, .site-nav a:focus-visible { color: var(--ink); }

.header-actions { display: flex; align-items: center; gap: 8px; }

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 9px 0 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink-muted);
  cursor: pointer;
  font-size: 13px;
}

.search-trigger:hover { border-color: var(--line-strong); color: var(--ink); }

kbd {
  padding: 2px 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--bg-elevated);
  color: var(--ink-muted);
  font-size: 10px;
}

.icon-button {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  cursor: pointer;
}

.icon-button:hover { border-color: var(--line-strong); }

.github-link {
  padding: 8px 3px 8px 8px;
  font-size: 13px;
  font-weight: 650;
}

.github-link span { color: var(--accent); }
.mobile-nav-toggle { display: none; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(390px, .94fr);
  align-items: center;
  gap: clamp(48px, 7vw, 100px);
  min-height: 730px;
  padding-block: 94px 100px;
}

.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft), 0 0 20px var(--accent);
}

.hero h1 {
  margin: 23px 0 24px;
  max-width: 730px;
  font-size: clamp(48px, 6vw, 78px);
  font-weight: 690;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.hero h1 span { color: var(--accent); }

.hero-lede {
  max-width: 670px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.68;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 19px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 720;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.button-secondary { background: var(--surface); }
.button-secondary:hover { border-color: var(--ink-muted); }

.hero-proof {
  display: flex;
  gap: 26px;
  margin-top: 43px;
  padding-top: 25px;
  border-top: 1px solid var(--line);
}

.hero-proof div { display: flex; flex-direction: column; gap: 2px; }
.hero-proof strong { font-family: var(--font-mono); font-size: 17px; }
.hero-proof span { color: var(--ink-muted); font-size: 11px; line-height: 1.35; }

.hero-system { position: relative; }

.system-window {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow);
  transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
}

.window-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 50px;
  padding: 0 17px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line-strong); }
.window-dots i:first-child { background: var(--orange); }
.window-dots i:nth-child(2) { background: #e0c44d; }
.window-dots i:last-child { background: var(--accent); }
.live-label { justify-self: end; display: flex; align-items: center; gap: 6px; color: var(--ink-muted); }
.live-label i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: pulse 1.8s infinite; }

.trace-stack { padding: 24px; }
.trace-row {
  display: grid;
  grid-template-columns: 38px 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 66px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--bg-elevated);
}

.trace-index { color: var(--ink-muted); font-family: var(--font-mono); font-size: 10px; }
.trace-row div { display: flex; flex-direction: column; }
.trace-row strong { font-size: 13px; }
.trace-row small { color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; }
.trace-shape { color: var(--cyan); font-family: var(--font-mono); font-size: 9px; }
.trace-row.accent-row { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: var(--accent-soft); }
.trace-row.accent-row strong { color: var(--accent); }
.trace-connector { width: 1px; height: 14px; margin-inline: 32px; background: var(--line-strong); }

.system-footer {
  display: flex;
  justify-content: space-between;
  padding: 13px 19px;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.metal-dot { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--purple); }
.system-orbit { position: absolute; z-index: 1; border: 1px dashed var(--line-strong); border-radius: 50%; pointer-events: none; }
.orbit-one { width: 190px; height: 190px; right: -68px; top: -67px; }
.orbit-two { width: 100px; height: 100px; left: -43px; bottom: -31px; border-color: color-mix(in srgb, var(--accent) 38%, transparent); }

.principle-strip { overflow: hidden; border-block: 1px solid var(--line); background: var(--bg-elevated); }
.principle-track { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 22px; white-space: nowrap; color: var(--ink-muted); font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.principle-track i { color: var(--accent); font-style: normal; }

.section { padding-block: 118px; }
.section-heading { display: grid; grid-template-columns: 1.1fr .9fr; align-items: end; gap: 70px; margin-bottom: 58px; }
.section-heading h2, .quickstart-copy h2, .experiment-copy h2, .limits-card h2 {
  margin: 12px 0 0;
  font-size: clamp(36px, 4.2vw, 58px);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.04;
}
.section-heading p { margin: 0; color: var(--ink-soft); font-size: 16px; }
.compact-heading { margin-bottom: 38px; }

.stack-map { display: grid; grid-template-columns: repeat(9, auto); align-items: stretch; margin-bottom: 26px; }
.stack-node {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 150ms ease, border-color 150ms ease;
}
.stack-node:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.stack-node.featured { border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); box-shadow: inset 0 0 0 1px var(--accent-soft); }
.stack-node .node-number { margin-bottom: 24px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 10px; }
.stack-node strong { font-size: 17px; }
.stack-node small { margin-top: 7px; color: var(--ink-muted); font-size: 11px; line-height: 1.45; }
.stack-arrow { display: grid; width: 34px; place-items: center; color: var(--ink-muted); }

.capability-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.capability-card {
  position: relative;
  overflow: hidden;
  min-height: 350px;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.capability-card::after { position: absolute; right: -80px; bottom: -100px; width: 230px; height: 230px; border: 1px solid var(--line); border-radius: 50%; content: ""; opacity: .7; }
.capability-card h3 { max-width: 420px; margin: 14px 0 14px; font-size: clamp(24px, 2.5vw, 34px); line-height: 1.08; letter-spacing: -0.04em; }
.capability-card p { max-width: 500px; margin: 0; color: var(--ink-soft); }
.capability-card > a { position: absolute; z-index: 2; left: clamp(26px, 4vw, 42px); bottom: 30px; color: var(--ink); font-size: 13px; font-weight: 700; }
.capability-card > a span { color: var(--accent); }
.card-label { color: var(--accent); font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.code-line { width: fit-content; margin-top: 27px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); color: var(--ink-muted); font-family: var(--font-mono); font-size: 11px; }
.code-line span { color: var(--cyan); }
.gradient-visual { display: flex; align-items: center; gap: 7px; margin-top: 27px; }
.gradient-visual span { padding: 6px 9px; border: 1px solid var(--line); border-radius: 6px; font-family: var(--font-mono); font-size: 9px; }
.gradient-visual i { width: 20px; height: 1px; background: var(--line-strong); }
.gradient-visual b { margin-left: 3px; color: var(--orange); font-family: var(--font-mono); font-size: 13px; }
.mini-blocks { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 28px; }
.mini-blocks span { display: grid; min-width: 38px; height: 29px; padding-inline: 8px; place-items: center; border-radius: 5px; background: var(--bg); color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; }
.mini-blocks span:nth-child(2), .mini-blocks span:nth-child(5) { background: var(--accent-soft); color: var(--accent); }
.tuning-bars { display: grid; gap: 7px; width: 220px; margin-top: 25px; }
.tuning-bars span { display: grid; grid-template-columns: 1fr 42px; align-items: center; gap: 8px; }
.tuning-bars i { display: block; width: var(--w); height: 5px; border-radius: 5px; background: var(--purple); }
.tuning-bars span:nth-child(2) i { background: var(--cyan); }
.tuning-bars span:nth-child(3) i { background: var(--accent); }
.tuning-bars small { color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; }
.compiler-flow { display: flex; align-items: center; gap: 9px; margin-top: 27px; }
.compiler-flow code { padding: 7px 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--orange); font-size: 9px; }
.compiler-flow span { color: var(--ink-muted); }
.scatter { position: relative; width: 190px; height: 78px; margin-top: 23px; border-left: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.scatter i { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); }
.scatter i:nth-child(1) { left: 14%; top: 66%; }.scatter i:nth-child(2) { left: 24%; top: 52%; }.scatter i:nth-child(3) { left: 34%; top: 62%; }.scatter i:nth-child(4) { left: 44%; top: 40%; }
.scatter i:nth-child(5) { left: 59%; top: 30%; background: var(--orange); }.scatter i:nth-child(6) { left: 67%; top: 18%; background: var(--orange); }.scatter i:nth-child(7) { left: 77%; top: 28%; background: var(--orange); }.scatter i:nth-child(8) { left: 87%; top: 12%; background: var(--orange); }

.section-dark { border-block: 1px solid var(--line); background: #101311; }
html[data-theme="light"] .section-dark { background: #171c18; color: #f4f2e9; --ink: #f4f2e9; --ink-soft: #c2c4ba; --ink-muted: #858b82; --line: #2a312c; --line-strong: #3c463f; --surface: #151916; --bg-elevated: #111412; --accent: #c7ff4a; --accent-ink: #101407; }
.quickstart-layout { display: grid; grid-template-columns: .78fr 1.22fr; align-items: center; gap: 90px; }
.quickstart-copy p { margin: 23px 0 0; color: var(--ink-soft); }
.check-list { display: grid; gap: 10px; margin: 28px 0; padding: 0; list-style: none; color: var(--ink-soft); font-size: 14px; }
.check-list li::before { margin-right: 10px; color: var(--accent); content: "✓"; font-family: var(--font-mono); }
.text-link { color: var(--ink); font-size: 14px; font-weight: 700; }
.text-link span { color: var(--accent); }
.code-console { overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: #090b0a; box-shadow: var(--shadow); }
.code-tabs { display: flex; gap: 3px; padding: 9px; border-bottom: 1px solid var(--line); }
.code-tabs button { padding: 8px 13px; border: 0; border-radius: 7px; background: transparent; color: var(--ink-muted); cursor: pointer; font-size: 12px; }
.code-tabs button[aria-selected="true"] { background: var(--surface-2); color: var(--ink); }
.code-panel { min-height: 255px; }
.code-panel pre { margin: 0; padding: 34px; overflow: auto; background: transparent; color: #d9ddd4; font-size: 12px; line-height: 1.85; }
.console-footer { display: flex; justify-content: space-between; padding: 12px 17px; border-top: 1px solid var(--line); color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; }

.backend-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.backend-card { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.backend-card.featured-backend { border-color: color-mix(in srgb, var(--accent) 48%, var(--line)); background: linear-gradient(145deg, var(--surface), var(--accent-soft)); }
.backend-top { display: flex; align-items: center; justify-content: space-between; }
.backend-icon { display: grid; min-width: 37px; height: 37px; padding-inline: 7px; place-items: center; border: 1px solid var(--line-strong); border-radius: 8px; font-family: var(--font-mono); font-size: 10px; font-weight: 800; }
.status-pill { padding: 4px 7px; border-radius: 20px; background: var(--surface-2); color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.backend-card.ready .status-pill { background: var(--accent-soft); color: var(--accent); }
.backend-card h3 { margin: 24px 0 8px; font-size: 20px; }
.backend-card p { min-height: 76px; margin: 0; color: var(--ink-soft); font-size: 13px; }
.backend-card ul { display: grid; gap: 7px; margin: 20px 0 0; padding: 17px 0 0; border-top: 1px solid var(--line); list-style: none; color: var(--ink-muted); font-size: 10px; }
.backend-card li::before { margin-right: 7px; color: var(--line-strong); content: "—"; }
.backend-card.ready li::before { color: var(--accent); }
.honesty-note { margin: 24px 0 0; padding: 16px 19px; border-left: 2px solid var(--orange); background: var(--surface); color: var(--ink-muted); font-size: 12px; }
.honesty-note strong { color: var(--ink); }
.honesty-note a { color: var(--orange); font-weight: 700; }

.experiment-section { overflow: hidden; border-block: 1px solid var(--line); background: var(--bg-elevated); }
.experiment-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 100px; }
.experiment-copy p { margin: 24px 0; color: var(--ink-soft); }
.variant-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.variant-row span { padding: 7px 9px; border: 1px solid var(--line); border-radius: 6px; color: var(--ink-muted); font-size: 9px; }
.variant-row b { color: var(--accent); font-family: var(--font-mono); }
.result-card { overflow: hidden; padding: 32px; border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line)); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
.result-header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }
.result-header div { display: flex; align-items: center; gap: 9px; }
.result-header strong { color: var(--ink); }
.result-primary { display: flex; flex-direction: column; align-items: center; padding: 30px 0 25px; }
.result-primary strong { color: var(--accent); font-family: var(--font-mono); font-size: clamp(56px, 7vw, 90px); letter-spacing: -0.07em; line-height: 1; }
.result-primary strong span { font-size: .35em; }
.result-primary small { margin-top: 8px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }
.result-metrics { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.result-metrics div { display: flex; flex-direction: column; align-items: center; padding: 18px 8px; border-right: 1px solid var(--line); text-align: center; }
.result-metrics div:last-child { border-right: 0; }
.result-metrics strong { font-family: var(--font-mono); font-size: 14px; }
.result-metrics span { margin-top: 3px; color: var(--ink-muted); font-size: 8px; }
.result-steering { padding: 22px 0 18px; }
.steering-label { display: flex; justify-content: space-between; margin: 10px 0 5px; color: var(--ink-muted); font-size: 9px; }
.steering-label strong { color: var(--ink-soft); font-family: var(--font-mono); }
.meter { height: 5px; overflow: hidden; border-radius: 5px; background: var(--surface-3); }
.meter i { display: block; width: var(--value); height: 100%; border-radius: inherit; background: var(--cyan); }
.meter.reverse i { background: var(--purple); }
.result-card > p { margin: 0 0 15px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-muted); font-size: 10px; }
.result-card > p strong { color: var(--ink-soft); }
.result-card > a { color: var(--accent); font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }

.target-terminal { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.target-column { display: flex; flex-direction: column; gap: 8px; padding: 26px; background: var(--surface); }
.target-column > span { margin-bottom: 7px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }
.target-column code { color: var(--ink-soft); font-size: 10px; }
.target-column code::before { margin-right: 8px; color: var(--accent); content: ">"; }

.docs-section { border-block: 1px solid var(--line); background: var(--bg-elevated); }
.docs-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
.docs-group { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.docs-group { transition: border-color 160ms ease, transform 160ms ease; }
.docs-group:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.docs-group-wide { grid-column: 1 / -1; }
.docs-group-heading { display: flex; gap: 14px; margin-bottom: 20px; }
.docs-group-heading > span { color: var(--accent); font-family: var(--font-mono); font-size: 10px; }
.docs-group-heading h3 { margin: 0; font-size: 19px; }
.docs-group-heading p { margin: 2px 0 0; color: var(--ink-muted); font-size: 11px; }
.docs-links { display: grid; gap: 1px; border-top: 1px solid var(--line); }
.docs-group-wide .docs-links { grid-template-columns: 1fr; }
.docs-links a { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 13px 2px; border-bottom: 1px solid var(--line); transition: padding 150ms ease, color 150ms ease; }
.docs-links a:hover { padding-inline: 7px; color: var(--accent); }
.docs-links strong { font-size: 12px; }
.docs-links span { color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; text-align: right; }
.docs-actions { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: stretch; gap: 12px; margin-top: 18px; }
.docs-actions > .button { min-height: 70px; }
.search-cta { display: flex; width: 100%; align-items: center; justify-content: space-between; margin: 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); cursor: pointer; text-align: left; }
.search-cta:hover { border-color: var(--line-strong); background: var(--surface-2); }
.search-cta > span { display: flex; align-items: center; gap: 13px; }
.search-cta b { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 7px; background: var(--accent-soft); color: var(--accent); }
.search-cta span span { display: flex; flex-direction: column; }
.search-cta strong { font-size: 12px; }
.search-cta small { color: var(--ink-muted); font-size: 9px; }

.limits-section { padding-top: 50px; }
.limits-card { display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; padding: clamp(30px, 5vw, 60px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.limits-card h2 { font-size: clamp(31px, 3vw, 44px); }
.limits-card ul { display: grid; gap: 17px; margin: 0; padding: 0; list-style: none; color: var(--ink-soft); font-size: 13px; }
.limits-card li { padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.limits-card li:last-child { padding-bottom: 0; border-bottom: 0; }
.limits-card strong { color: var(--ink); }

.site-footer { padding: 70px 0 20px; border-top: 1px solid var(--line); background: var(--bg-elevated); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 60px; padding-bottom: 60px; }
.footer-brand { margin-bottom: 17px; }
.footer-grid > div:first-child p { color: var(--ink-muted); font-size: 12px; }
.footer-links { display: flex; flex-direction: column; gap: 9px; }
.footer-links strong { margin-bottom: 5px; color: var(--ink); font-size: 11px; }
.footer-links a { color: var(--ink-muted); font-size: 11px; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }

.search-dialog {
  width: min(660px, calc(100% - 28px));
  max-height: min(720px, calc(100dvh - 80px));
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 17px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.search-dialog::backdrop { background: rgba(2, 5, 3, .72); backdrop-filter: blur(5px); }
.search-box { overflow: hidden; }
.search-input-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.search-input-row > span { color: var(--accent); font-size: 20px; }
.search-input-row input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 15px; }
.search-input-row input::placeholder { color: var(--ink-muted); }
.search-input-row button { padding: 4px 7px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg-elevated); color: var(--ink-muted); cursor: pointer; font-family: var(--font-mono); font-size: 9px; }
.search-results { max-height: 530px; overflow-y: auto; padding: 8px; }
.search-empty { display: flex; min-height: 190px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; color: var(--ink-muted); text-align: center; }
.search-empty strong { color: var(--ink-soft); font-size: 13px; }
.search-empty span { font-size: 10px; }
.search-result { display: block; padding: 13px; border: 1px solid transparent; border-radius: 9px; }
.search-result:hover, .search-result.active { border-color: var(--line); background: var(--bg-elevated); }
.search-result small { display: block; margin-bottom: 4px; color: var(--accent); font-family: var(--font-mono); font-size: 7px; letter-spacing: .06em; text-transform: uppercase; }
.search-result strong { display: block; margin-bottom: 3px; font-size: 12px; }
.search-result span { display: block; color: var(--ink-muted); font-size: 9px; }
.search-result mark { background: var(--accent-soft); color: var(--accent); }
.search-footer { display: flex; justify-content: flex-end; gap: 15px; padding: 9px 14px; border-top: 1px solid var(--line); color: var(--ink-muted); font-size: 8px; }
.search-footer span { display: flex; align-items: center; gap: 4px; }

/* Generated guide pages */
.guide-body { background: var(--bg); }
.guide-header { border-bottom-color: var(--line); background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(18px); }
.guide-layout { display: grid; grid-template-columns: 230px minmax(0, 760px) 190px; justify-content: center; gap: clamp(28px, 4vw, 55px); width: min(calc(100% - 40px), 1320px); margin-inline: auto; padding-block: 48px 100px; }
.guide-sidebar, .guide-toc { position: sticky; top: 96px; align-self: start; max-height: calc(100dvh - 118px); overflow-y: auto; scrollbar-width: thin; }
.guide-sidebar-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.guide-sidebar-title, .guide-toc-title { display: block; margin-bottom: 11px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.guide-menu-toggle { display: none; padding: 6px 8px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); color: var(--ink-muted); cursor: pointer; font-family: var(--font-mono); font-size: 8px; }
.docs-version { padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; }
.guide-nav { display: grid; gap: 2px; }
.guide-nav-group { margin: 0 0 5px; padding: 0; border: 0; }
.guide-nav-group > summary { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 7px 8px; border-radius: 7px; color: var(--ink-muted); cursor: pointer; font-size: 9px; font-weight: 700; list-style: none; }
.guide-nav-group > summary::-webkit-details-marker { display: none; }
.guide-nav-group[open] > summary { color: var(--ink); }
.guide-nav-group > summary:hover { background: var(--surface); color: var(--ink); }
.guide-nav-chevron { transition: transform 150ms ease; }
.guide-nav-group[open] .guide-nav-chevron { transform: rotate(180deg); }
.guide-nav-links { display: grid; margin: 1px 0 7px; }
.guide-nav-section-link { color: inherit; }
.guide-nav a { display: block; padding: 6px 9px; border-left: 1px solid var(--line); color: var(--ink-muted); font-size: 10px; line-height: 1.35; }
.guide-nav a small { display: block; margin-top: 2px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 7px; text-transform: uppercase; }
.guide-nav a:hover, .guide-nav a.active { border-left-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.guide-main { min-width: 0; }
.docs-breadcrumbs { margin-bottom: 26px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; letter-spacing: .035em; text-transform: uppercase; }
.docs-breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 0; padding: 0; list-style: none; }
.docs-breadcrumbs li + li::before { margin-right: 7px; color: var(--line-strong); content: "/"; }
.docs-breadcrumbs a { color: var(--ink-muted); }
.docs-breadcrumbs a:hover { color: var(--accent); }
.guide-intro { margin-bottom: 34px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.guide-kicker { display: flex; gap: 8px; margin-bottom: 12px; color: var(--accent); font-family: var(--font-mono); font-size: 9px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.guide-intro h1 { margin: 0 0 18px; color: var(--ink); font-size: clamp(38px, 5vw, 60px); line-height: 1.02; letter-spacing: -.055em; }
.guide-summary { max-width: 680px; margin: 0; color: var(--ink-soft); font-size: 18px; line-height: 1.55; }
.guide-metadata { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); overflow: hidden; margin: 22px 0 0; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.metadata-group { min-width: 0; padding: 12px 14px; border-right: 1px solid var(--line); }
.metadata-group:last-child { border-right: 0; }
.metadata-label { display: block; margin-bottom: 4px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 7px; letter-spacing: .07em; text-transform: uppercase; }
.metadata-value { display: flex; flex-wrap: wrap; gap: 5px; color: var(--ink); font-size: 10px; }
.metadata-badge { display: inline-flex; align-items: center; min-height: 20px; padding: 2px 7px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-elevated); color: var(--ink-soft); font-family: var(--font-mono); font-size: 7px; text-transform: uppercase; }
.guide-source { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--line); color: var(--ink-muted); font-family: var(--font-mono); font-size: 9px; }
.guide-source a { color: var(--accent); }
.guide-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.guide-actions a { padding: 7px 9px; border: 1px solid var(--line); border-radius: 7px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; }
.guide-actions a:hover { border-color: var(--line-strong); color: var(--accent); }
.guide-toc nav { display: grid; }
.guide-toc a { padding: 5px 0 5px 10px; border-left: 1px solid var(--line); color: var(--ink-muted); font-size: 9px; line-height: 1.35; }
.guide-toc a[data-level="3"] { padding-left: 20px; }
.guide-toc a:hover, .guide-toc a.active { border-left-color: var(--accent); color: var(--ink); }
.guide-toc-feedback { display: grid; gap: 4px; margin-top: 22px; padding-top: 17px; border-top: 1px solid var(--line); color: var(--ink-muted); font-size: 8px; }
.guide-toc-feedback a { padding: 0; border: 0; color: var(--accent); }
.guide-pagination { display: flex; justify-content: space-between; gap: 16px; margin-top: 70px; padding-top: 24px; border-top: 1px solid var(--line); }
.guide-pagination a { display: flex; min-width: 150px; flex-direction: column; padding: 13px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink-muted); font-size: 9px; }
.guide-pagination a:last-child { text-align: right; }
.guide-pagination strong { color: var(--ink); font-size: 11px; }
.guide-related { margin-top: 50px; padding: 25px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.guide-related-heading > span { color: var(--accent); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.guide-related h2 { margin: 5px 0 18px; font-size: 17px; }
.related-guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.guide-related .related-guide-card { display: flex; min-width: 0; flex-direction: column; gap: 5px; padding: 13px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-soft); }
.guide-related .related-guide-card:hover { border-color: var(--line-strong); color: var(--accent); }
.related-guide-card > span { color: var(--ink-muted); font-family: var(--font-mono); font-size: 7px; text-transform: uppercase; }
.related-guide-card strong { color: var(--ink); font-size: 10px; }
.related-guide-card small { color: var(--ink-muted); font-size: 8px; line-height: 1.4; }

/* Documentation portal and section landing pages */
body.docs-home, body.section-home { width: auto; margin: 0; padding: 0; background: var(--bg); }
.docs-hero { padding: 70px 0 62px; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 78% 18%, var(--accent-soft), transparent 28%), var(--bg); }
.docs-hero-inner { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(250px, .7fr); gap: clamp(45px, 8vw, 105px); align-items: end; }
.docs-hero-inner > .docs-breadcrumbs { grid-column: 1 / -1; margin-bottom: 0; }
.section-label { display: block; color: var(--accent); font-family: var(--font-mono); font-size: 9px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.docs-hero h1 { margin: 14px 0 22px; color: var(--ink); font-size: clamp(48px, 7vw, 82px); letter-spacing: -.06em; line-height: .98; }
.docs-hero h1 span { color: var(--accent); }
.docs-hero-copy > p { max-width: 720px; margin: 0; color: var(--ink-soft); font-size: 17px; line-height: 1.6; }
.docs-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.docs-hero-actions .button { min-height: 48px; }
.docs-hero-stats { display: grid; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.docs-hero-stats div { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding: 17px 19px; border-bottom: 1px solid var(--line); }
.docs-hero-stats div:last-child { border-bottom: 0; }
.docs-hero-stats dt { color: var(--accent); font-family: var(--font-mono); font-size: 24px; font-weight: 700; }
.docs-hero-stats dd { margin: 0; color: var(--ink-muted); font-size: 9px; text-align: right; text-transform: uppercase; }
.docs-catalog { padding-block: 84px; }
.docs-catalog-heading { display: block; max-width: 720px; margin-bottom: 42px; }
.docs-catalog-heading h2 { margin: 10px 0 14px; }
.docs-catalog-heading p { margin: 0; color: var(--ink-muted); }
.docs-section-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.docs-section-card { display: flex; min-height: 360px; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: border-color 160ms ease, transform 160ms ease; }
.docs-section-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.docs-section-card-top { display: flex; align-items: center; justify-content: space-between; }
.docs-section-number { color: var(--accent); font-family: var(--font-mono); font-size: 10px; }
.docs-section-card h2 { margin: 18px 0 8px; color: var(--ink); font-size: 24px; }
.docs-section-card p { margin: 0; color: var(--ink-muted); font-size: 12px; line-height: 1.55; }
.docs-section-meta { margin-top: 20px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.docs-section-card ul { display: grid; gap: 0; margin: 18px 0 22px; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.docs-section-card li { border-bottom: 1px solid var(--line); }
.docs-section-card li a, .docs-section-more { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; color: var(--ink-soft); font-size: 9px; }
.docs-section-card li a:hover { color: var(--accent); }
.docs-section-more { color: var(--ink-muted); }
.docs-section-open { margin-top: auto; color: var(--accent); font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }
.docs-type-band { padding: 68px 0; border-block: 1px solid var(--line); background: var(--bg-elevated); }
.docs-type-band-inner { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: 70px; align-items: center; }
.docs-type-band h2 { margin: 10px 0 0; font-size: clamp(28px, 4vw, 44px); }
.docs-type-summary { display: grid; grid-template-columns: repeat(3, 1fr); overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); }
.docs-type-stat { display: flex; min-height: 90px; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.docs-type-stat:nth-child(3n) { border-right: 0; }
.docs-type-stat:nth-last-child(-n + 3) { border-bottom: 0; }
.docs-type-stat strong { color: var(--accent); font-family: var(--font-mono); font-size: 20px; }
.docs-type-stat span { color: var(--ink-muted); font-size: 8px; text-transform: uppercase; }
.section-layout { padding-top: 48px; }
.section-intro { margin-bottom: 38px; padding-bottom: 34px; border-bottom: 1px solid var(--line); }
.section-intro h1 { margin: 11px 0 16px; color: var(--ink); font-size: clamp(42px, 6vw, 68px); letter-spacing: -.055em; line-height: 1; }
.section-intro p { max-width: 720px; margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.6; }
.section-intro-meta { display: flex; flex-wrap: wrap; gap: 15px; margin-top: 19px; color: var(--ink-muted); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.section-guide-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.section-guide-card { display: flex; min-height: 270px; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); }
.section-guide-card:hover { border-color: var(--line-strong); background: var(--surface-2); }
.section-guide-kicker { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--accent); font-family: var(--font-mono); font-size: 8px; letter-spacing: .06em; text-transform: uppercase; }
.section-guide-card h2 { margin: 17px 0 9px; color: var(--ink); font-size: 19px; }
.section-guide-card p { margin: 0 0 18px; color: var(--ink-muted); font-size: 11px; line-height: 1.55; }
.section-guide-footer { display: grid; gap: 8px; margin-top: auto; }
.section-guide-audience { color: var(--ink-muted); font-size: 8px; }
.metadata-badges { display: flex; flex-wrap: wrap; gap: 4px; }
.section-guide-open { margin-top: 17px; color: var(--accent); font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.section-aside p { color: var(--ink-muted); font-size: 9px; line-height: 1.55; }
.section-aside > a { display: inline-block; margin-top: 10px; color: var(--accent); font-size: 9px; }

.markdown-body { color: var(--ink-soft); font-size: 15px; line-height: 1.75; }
.markdown-body > h1 { margin: 0 0 22px; color: var(--ink); font-size: clamp(38px, 5vw, 60px); line-height: 1.02; letter-spacing: -0.055em; }
.markdown-body h2 { margin: 64px 0 19px; padding-top: 6px; color: var(--ink); font-size: 30px; line-height: 1.16; letter-spacing: -0.035em; }
.markdown-body h3 { margin: 40px 0 13px; color: var(--ink); font-size: 21px; line-height: 1.25; letter-spacing: -0.025em; }
.markdown-body h4 { margin: 28px 0 9px; color: var(--ink); font-size: 16px; }
.markdown-body p { margin: 0 0 18px; }
.markdown-body a { color: var(--cyan); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--cyan) 35%, transparent); text-underline-offset: 3px; }
.markdown-body a:hover { text-decoration-color: var(--cyan); }
.markdown-body strong { color: var(--ink); }
.markdown-body code { padding: 2px 5px; border: 1px solid var(--line); border-radius: 5px; background: var(--bg-elevated); color: var(--orange); font-size: .84em; }
.markdown-body pre { position: relative; margin: 25px 0; padding: 22px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #080a09; color: #d8ddd6; font-size: 12px; line-height: 1.65; }
.markdown-body pre code { padding: 0; border: 0; background: transparent; color: inherit; font-size: inherit; }
.markdown-body .code-language { position: absolute; top: 8px; right: 10px; color: #687069; font-family: var(--font-mono); font-size: 8px; text-transform: uppercase; }
.copy-code { position: absolute; top: 7px; right: 9px; padding: 4px 7px; border: 1px solid #303630; border-radius: 5px; background: #121512; color: #8c958d; cursor: pointer; font-size: 8px; }
.markdown-body pre:has(.copy-code) .code-language { right: 56px; }
.markdown-body blockquote { margin: 25px 0; padding: 16px 19px; border-left: 2px solid var(--accent); background: var(--accent-soft); color: var(--ink-soft); }
.markdown-body blockquote p:last-child { margin-bottom: 0; }
.markdown-body ul, .markdown-body ol { margin: 0 0 20px; padding-left: 23px; }
.markdown-body li { margin: 6px 0; padding-left: 3px; }
.markdown-body li::marker { color: var(--accent); }
.markdown-body table { display: block; width: 100%; margin: 25px 0; overflow-x: auto; border-collapse: collapse; font-size: 12px; }
.markdown-body th, .markdown-body td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.markdown-body th { background: var(--surface); color: var(--ink); font-size: 10px; }
.markdown-body hr { margin: 45px 0; border: 0; border-top: 1px solid var(--line); }
.markdown-body .math-block { overflow-x: auto; margin: 25px 0; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); text-align: center; }
.markdown-body .math-inline { color: var(--ink); }
.markdown-body .mermaid { overflow-x: auto; margin: 26px 0; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); text-align: center; }
.markdown-body .anchor-link { margin-left: 8px; color: var(--ink-muted); text-decoration: none; opacity: 0; }
.markdown-body h2:hover .anchor-link, .markdown-body h3:hover .anchor-link { opacity: 1; }

[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 600ms ease, transform 600ms ease; }
[data-reveal][data-delay="1"] { transition-delay: 100ms; }
[data-reveal].revealed { opacity: 1; transform: none; }

@keyframes pulse { 0%, 100% { opacity: .4; transform: scale(.9); } 50% { opacity: 1; transform: scale(1.2); } }

.not-found-body { display: grid; min-height: 100dvh; place-items: center; }
.not-found { width: min(calc(100% - 36px), 680px); padding: 55px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
.not-found-code { margin-top: 90px; color: var(--accent); font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; }
.not-found h1 { margin: 13px 0; font-size: clamp(42px, 8vw, 70px); line-height: 1; letter-spacing: -.055em; }
.not-found p { color: var(--ink-muted); }

@media (max-width: 1100px) {
  .site-nav { display: none; }
  .hero { grid-template-columns: 1fr 440px; gap: 45px; }
  .hero h1 { font-size: 58px; }
  .backend-grid { grid-template-columns: repeat(2, 1fr); }
  .experiment-grid { gap: 60px; }
  .guide-layout { grid-template-columns: 200px minmax(0, 760px); }
  .guide-toc { display: none; }
  .docs-hero-inner, .docs-type-band-inner { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .shell { width: min(calc(100% - 30px), var(--shell)); }
  .header-inner { min-height: 64px; }
  .header-actions .search-trigger span:nth-child(2), .header-actions .search-trigger kbd, .github-link { display: none; }
  .mobile-nav-toggle { display: grid; margin-left: auto; }
  .mobile-nav-toggle span { display: block; width: 16px; height: 1px; background: var(--ink); transition: transform 160ms ease; }
  .mobile-nav-toggle span + span { margin-top: -8px; }
  .site-nav.open { position: absolute; top: 63px; left: 15px; right: 15px; display: grid; gap: 0; padding: 8px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); }
  .site-nav.open a { padding: 12px; border-bottom: 1px solid var(--line); }
  .site-nav.open a:last-child { border: 0; }
  .hero { grid-template-columns: 1fr; min-height: 0; padding-block: 80px; }
  .hero-system { width: min(100%, 560px); margin-inline: auto; }
  .hero h1 { font-size: clamp(49px, 10vw, 70px); }
  .principle-track { justify-content: flex-start; overflow-x: auto; }
  .section { padding-block: 85px; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; margin-bottom: 42px; }
  .stack-map { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .stack-arrow { display: none; }
  .stack-node { padding: 14px; }
  .quickstart-layout, .experiment-grid, .limits-card { grid-template-columns: 1fr; gap: 50px; }
  .target-terminal { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 2fr repeat(2, 1fr); }
  .guide-layout { grid-template-columns: 1fr; padding-top: 30px; }
  .guide-sidebar { position: static; max-height: none; }
  .guide-sidebar-heading { padding-bottom: 9px; border-bottom: 1px solid var(--line); }
  .guide-sidebar-title { margin-bottom: 0; }
  .guide-menu-toggle { display: inline-flex; align-items: center; gap: 7px; }
  .guide-sidebar .guide-nav { display: none; }
  .guide-sidebar.open .guide-nav { display: grid; }
  .docs-hero { padding-top: 48px; }
  .related-guide-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .hero { padding-block: 65px; }
  .hero h1 { font-size: 47px; }
  .hero-proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero-proof span { font-size: 9px; }
  .window-bar { grid-template-columns: 1fr 1fr; }
  .window-bar > span:nth-child(2) { display: none; }
  .trace-stack { padding: 15px; }
  .trace-row { grid-template-columns: 28px 1fr; }
  .trace-shape { display: none; }
  .principle-track { min-height: 52px; }
  .stack-map, .capability-grid, .backend-grid, .docs-groups { grid-template-columns: 1fr; }
  .capability-card { min-height: 360px; }
  .code-panel pre { padding: 25px 18px; font-size: 10px; }
  .result-card { padding: 22px; }
  .result-metrics strong { font-size: 12px; }
  .docs-group-wide { grid-column: auto; }
  .docs-actions { grid-template-columns: 1fr; }
  .docs-actions > .button { min-height: 54px; }
  .docs-links a { align-items: flex-start; flex-direction: column; gap: 2px; }
  .docs-links span { text-align: left; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 35px; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 5px; }
  .guide-layout { width: min(calc(100% - 28px), 1320px); }
  .guide-source { align-items: flex-start; flex-direction: column; gap: 7px; }
  .guide-metadata, .docs-section-grid, .section-guide-list { grid-template-columns: 1fr; }
  .docs-type-summary { grid-template-columns: repeat(2, 1fr); }
  .docs-type-stat:nth-child(3n) { border-right: 1px solid var(--line); }
  .docs-type-stat:nth-child(2n) { border-right: 0; }
  .docs-type-stat:nth-last-child(-n + 3) { border-bottom: 1px solid var(--line); }
  .docs-type-stat:nth-last-child(-n + 2) { border-bottom: 0; }
  .metadata-group { border-right: 0; border-bottom: 1px solid var(--line); }
  .metadata-group:last-child { border-bottom: 0; }
  .docs-section-card, .section-guide-card { min-height: 0; }
  .markdown-body { font-size: 14px; }
  .markdown-body h2 { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}