:root {
  color-scheme: dark;
  --bg: #080a0f;
  --surface: rgba(255, 255, 255, 0.055);
  --surface-strong: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f8fafc;
  --muted: #a1a1aa;
  --accent: #4ecca3;
  --accent-ink: #04120e;
  --radius: 28px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, rgba(78, 204, 163, 0.17), transparent 34rem),
    radial-gradient(circle at 90% 20%, rgba(99, 102, 241, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}
body.holy-grail { --project-color: #d4af37; }
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 20; background: var(--accent); color: var(--accent-ink); padding: .75rem 1rem; border-radius: .75rem; font-weight: 900; }
.skip-link:focus { top: 1rem; }
.shell { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.25rem 0; font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .13em; }
.nav a { text-decoration: none; }
.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1rem; color: var(--muted); }
.hero { margin: 3rem 0 1.2rem; padding: clamp(1.5rem, 5vw, 4rem); border: 1px solid var(--line); border-radius: 36px; background: linear-gradient(145deg, var(--surface-strong), rgba(255,255,255,.025)); box-shadow: inset 0 3px 0 var(--project-color, var(--accent)), 0 30px 100px rgba(0,0,0,.35); }
.eyebrow { margin: 0; color: var(--accent); font-size: .72rem; font-weight: 950; text-transform: uppercase; letter-spacing: .2em; }
h1 { margin: .8rem 0 1rem; max-width: 15ch; font-size: clamp(2.8rem, 9vw, 7.2rem); line-height: .94; letter-spacing: -.06em; }
h2 { margin: .35rem 0 1rem; font-size: clamp(1.45rem, 3vw, 2.3rem); line-height: 1.1; letter-spacing: -.035em; }
.lede { max-width: 820px; margin: 0; color: #d4d4d8; font-size: clamp(1rem, 2.3vw, 1.25rem); line-height: 1.8; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.7rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .72rem 1rem; border: 1px solid transparent; border-radius: 13px; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-size: .82rem; font-weight: 950; }
.button.secondary { border-color: var(--line); background: rgba(255,255,255,.04); color: var(--text); }
.facts, .catalog-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; margin: 1.2rem 0; }
.fact, .card, .panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.fact { padding: 1.25rem; }
.label { margin: 0 0 .45rem; color: var(--muted); font-size: .65rem; font-weight: 950; text-transform: uppercase; letter-spacing: .17em; }
.value { margin: 0; font-weight: 850; line-height: 1.35; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.panel { padding: clamp(1.35rem, 4vw, 2.2rem); }
.panel.wide { grid-column: 1 / -1; }
.panel p:last-child { margin-bottom: 0; color: #d4d4d8; }
.tags { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.1rem; }
.tag { border: 1px solid var(--line); border-radius: 999px; background: rgba(0,0,0,.2); padding: .45rem .75rem; font-size: .75rem; font-weight: 800; }
.stack-groups { display: grid; gap: .75rem; margin-top: 1.1rem; }
.stack-group { border: 1px solid var(--line); border-radius: 18px; background: rgba(0,0,0,.18); padding: 1rem; }
.stack-group .label { margin-bottom: .7rem; }
.stack-group .tags { margin-top: 0; }
.proof { display: grid; gap: .7rem; margin: 1rem 0 0; padding: 0; list-style: none; color: #d4d4d8; }
.proof li { display: flex; gap: .7rem; }
.proof li::before { content: "✓"; color: var(--accent); font-weight: 950; }
.audit-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 1.2rem; }
.audit-columns h3 { margin: 0 0 .7rem; font-size: 1rem; }
.audit-columns .limitations li::before { content: "→"; color: #fcd34d; }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin: 4rem 0 2rem; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.catalog-head { padding: 4rem 0 1rem; }
.catalog-head h1 { max-width: 12ch; }
.filters { display: grid; grid-template-columns: 1fr minmax(180px, .35fr); gap: .75rem; margin: 1rem 0 1.4rem; }
.filters input, .filters select { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.05); color: var(--text); padding: 0 1rem; font: inherit; }
.catalog-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { display: flex; flex-direction: column; min-height: 300px; padding: 1.4rem; text-decoration: none; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.card:hover, .card:focus-visible { transform: translateY(-4px); border-color: rgba(78,204,163,.5); background: rgba(255,255,255,.075); }
.card h2 { margin-top: .7rem; font-size: 1.35rem; }
.card p { color: var(--muted); }
.card .tags { margin-top: auto; padding-top: 1rem; }
.result-count { color: var(--muted); font-size: .85rem; }
[hidden] { display: none !important; }
@media (max-width: 850px) { .facts { grid-template-columns: 1fr 1fr; } .catalog-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .nav { align-items: flex-start; } .nav-links { display: grid; gap: .4rem; text-align: right; } .hero { margin-top: 1rem; } .facts, .content-grid, .catalog-grid, .filters, .audit-columns { grid-template-columns: 1fr; } .panel.wide { grid-column: auto; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; } }