:root {
  --bg: #07111f;
  --fg: #edf4ff;
  --muted: #a9b8cf;
  --card: #0d1a30;
  --card-soft: #10213d;
  --border: rgba(147, 197, 253, 0.18);
  --accent: #38bdf8;
  --stable: #22c55e;
  --bridge: #38bdf8;
  --benchmark: #f59e0b;
  --research: #c084fc;
  --danger: #fb7185;
  --maxw: 1120px;
  --shadow: 0 18px 50px rgba(3, 9, 20, 0.34);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f9ff;
    --fg: #10213b;
    --muted: #5a6e8d;
    --card: #ffffff;
    --card-soft: #edf6ff;
    --border: rgba(30, 64, 175, 0.16);
    --accent: #0369a1;
    --stable: #15803d;
    --bridge: #0369a1;
    --benchmark: #b45309;
    --research: #7e22ce;
    --danger: #be123c;
    --shadow: 0 20px 55px rgba(37, 99, 235, 0.09);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--fg);
  background:
    radial-gradient(900px 520px at 8% -12%, rgba(56, 189, 248, 0.17), transparent 58%),
    radial-gradient(800px 460px at 92% 0%, rgba(34, 197, 94, 0.12), transparent 55%),
    var(--bg);
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
code,
pre {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
code { overflow-wrap: anywhere; }
pre {
  margin: 12px 0 0;
  max-width: 100%;
  overflow: auto;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #07111f;
  color: #edf4ff;
  line-height: 1.5;
}
.container { width: min(var(--maxw), calc(100% - 40px)); margin: 0 auto; }
.skip-link {
  position: fixed;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 9px 12px;
  border-radius: 8px;
  background: var(--accent);
  color: #06111f;
  font-weight: 800;
}
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--border);
  background: color-mix(in hsl, var(--bg) 88%, transparent);
  backdrop-filter: blur(13px) saturate(150%);
}
.nav {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 850;
}
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 13px; font-size: 14px; }
.nav-links a { color: var(--fg); }
.nav-links a[aria-current="page"] { color: var(--accent); font-weight: 800; }
main { padding: 52px 0 72px; }
.hero { padding: 14px 0 34px; }
.eyebrow,
.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.eyebrow { color: var(--stable); margin-bottom: 12px; }
h1,
h2,
h3 { line-height: 1.17; letter-spacing: -0.02em; }
h1 { max-width: 18ch; margin: 0 0 15px; font-size: clamp(36px, 6vw, 64px); }
h2 { margin: 0 0 12px; font-size: clamp(25px, 3vw, 34px); }
h3 { margin: 0 0 8px; font-size: 19px; }
p { margin-top: 0; }
.lead { max-width: 70ch; color: var(--muted); font-size: clamp(17px, 2vw, 21px); }
.hero-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 10px 15px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--card);
  color: var(--fg);
  font-weight: 780;
}
.button:hover { border-color: var(--accent); text-decoration: none; }
.button.primary {
  border: 0;
  background: linear-gradient(90deg, var(--accent), var(--stable));
  color: #06111f;
  box-shadow: 0 14px 32px rgba(14, 165, 233, 0.22);
}
.search-shell {
  margin: 26px 0 6px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: color-mix(in hsl, var(--card) 88%, transparent);
}
.search-shell label { display: block; margin-bottom: 7px; font-weight: 800; }
.search-input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 11px 13px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.search-results {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}
.search-result {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  background: var(--card-soft);
}
.search-result small { display: block; color: var(--muted); }
.section {
  margin-top: 42px;
  padding-top: 34px;
  border-top: 1px solid var(--border);
  scroll-margin-top: 86px;
}
.section-copy { max-width: 72ch; color: var(--muted); }
.grid { display: grid; gap: 15px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card,
.step,
.notice {
  padding: 19px;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: linear-gradient(180deg, color-mix(in hsl, var(--card-soft) 84%, transparent), var(--card));
  box-shadow: var(--shadow);
}
.card p,
.card li,
.step p,
.notice { color: var(--muted); }
.lane-card { border-top: 4px solid currentColor; }
.lane-stable { color: var(--stable); }
.lane-bridge { color: var(--bridge); }
.lane-benchmark { color: var(--benchmark); }
.lane-research { color: var(--research); }
.lane-card h3,
.lane-card p,
.lane-card a { color: var(--fg); }
.lane-card p { opacity: 0.76; }
.badge-stable { color: var(--stable); }
.badge-bridge,
.badge-experimental { color: var(--bridge); }
.badge-benchmark { color: var(--benchmark); }
.badge-research { color: var(--research); }
.badge-danger { color: var(--danger); }
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}
.steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 17px;
  counter-reset: docs-step;
}
.step { position: relative; min-width: 0; padding-left: 72px; }
.step::before {
  counter-increment: docs-step;
  content: counter(docs-step);
  position: absolute;
  left: 19px;
  top: 19px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--stable);
  color: #06111f;
  font-weight: 900;
}
.check-list { padding-left: 20px; }
.check-list li { margin: 7px 0; }
.tool-list,
.schema-list { display: grid; gap: 13px; }
details.card summary { cursor: pointer; color: var(--fg); font-weight: 800; }
details.card[open] summary { margin-bottom: 12px; }
.kv { display: grid; grid-template-columns: minmax(110px, 0.35fr) 1fr; gap: 6px 14px; }
.kv dt { color: var(--muted); font-weight: 750; }
.kv dd { margin: 0; }
.example-image {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  margin: 14px 0;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: #07111f;
}
.source-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}
.source-note a { font-weight: 750; }
[hidden] { display: none !important; }
.site-footer {
  padding: 25px 0 42px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}
.footer-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

@media (max-width: 880px) {
  .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, var(--maxw)); }
  .nav { align-items: flex-start; flex-direction: column; padding: 12px 0; }
  .grid.two,
  .grid.four { grid-template-columns: 1fr; }
  .step { padding-left: 19px; padding-top: 68px; }
  .kv { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}