:root {
  color-scheme: dark;
  --bg: #07111f;
  --surface: rgba(16, 33, 53, 0.78);
  --surface-solid: #102135;
  --line: rgba(148, 180, 205, 0.2);
  --text: #eef7ff;
  --muted: #a8bdd0;
  --cyan: #61dafb;
  --lime: #adff7a;
  --amber: #ffd479;
  --max: 1160px;
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 5%, rgba(48, 188, 210, 0.17), transparent 30rem),
    radial-gradient(circle at 8% 38%, rgba(100, 217, 145, 0.1), transparent 26rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
button, input { font: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 20;
  padding: .7rem 1rem;
  border-radius: 999px;
  background: var(--lime);
  color: #07111f;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, .82);
  backdrop-filter: blur(18px);
}
.nav {
  width: min(calc(100% - 2rem), var(--max));
  min-height: 72px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .75rem; text-decoration: none; font-weight: 800; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid rgba(173, 255, 122, .45);
  border-radius: 11px;
  background: rgba(173, 255, 122, .08);
  color: var(--lime);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--text); }
.nav-toggle { display: none; border: 0; background: transparent; color: var(--text); font-size: 1.4rem; }

main { overflow: hidden; }
.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.hero { padding: clamp(5rem, 11vw, 9rem) 0 5rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 4rem; align-items: center; }
.eyebrow { margin: 0 0 1rem; color: var(--lime); font: 700 .78rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; line-height: 1.12; letter-spacing: -.03em; }
h1 { max-width: 850px; margin-bottom: 1.5rem; font-size: clamp(3rem, 7.5vw, 6.3rem); }
h2 { margin-bottom: 1rem; font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { font-size: 1.25rem; }
.gradient-text { background: linear-gradient(105deg, var(--text) 20%, var(--cyan) 58%, var(--lime)); background-clip: text; color: transparent; }
.lead { max-width: 760px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.28rem); }
.actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 48px; padding: .72rem 1.15rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.035); text-decoration: none; font-weight: 750; }
.button.primary { border-color: var(--lime); background: var(--lime); color: #07111f; }
.button:hover { transform: translateY(-1px); border-color: rgba(173,255,122,.7); }
.proof-card { position: relative; padding: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(24,54,79,.95), rgba(9,23,39,.95)); box-shadow: 0 30px 80px rgba(0,0,0,.25); }
.proof-card::before { content: ""; position: absolute; inset: -1px; z-index: -1; border-radius: inherit; background: linear-gradient(135deg, rgba(97,218,251,.5), transparent 45%, rgba(173,255,122,.3)); }
.status-line { display: flex; align-items: center; gap: .65rem; color: var(--muted); font-size: .88rem; }
.status-dot { width: .6rem; height: .6rem; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 5px rgba(173,255,122,.1); }
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 1.5rem; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--line); }
.metric { padding: 1.1rem; background: var(--surface-solid); }
.metric strong { display: block; color: var(--cyan); font-size: 1.7rem; }
.metric span { color: var(--muted); font-size: .78rem; }
.proof-note { margin: 1.25rem 0 0; color: var(--muted); font-size: .82rem; }

.section { padding: 5.5rem 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2rem; }
.section-heading p { max-width: 560px; margin: 0; color: var(--muted); }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card { display: flex; min-height: 290px; flex-direction: column; padding: 1.35rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.card:hover { border-color: rgba(97,218,251,.45); transform: translateY(-2px); }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.7rem; }
.project-number { color: var(--muted); font: 700 .8rem ui-monospace, SFMono-Regular, Menlo, monospace; }
.badge { padding: .3rem .58rem; border: 1px solid var(--line); border-radius: 999px; color: var(--cyan); font-size: .72rem; font-weight: 750; }
.badge.archive { color: var(--amber); }
.card p { margin: 0; color: var(--muted); font-size: .92rem; }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1.15rem; }
.tags span { padding: .22rem .5rem; border-radius: 7px; background: rgba(255,255,255,.045); color: #c9d9e6; font-size: .72rem; }
.card-links { display: flex; gap: 1rem; margin-top: auto; padding-top: 1.4rem; }
.card-links a { color: var(--text); text-decoration: none; font-size: .85rem; font-weight: 750; }
.card-links a::after { content: " ↗"; color: var(--lime); }

.evidence-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.evidence-panel { padding: clamp(1.4rem, 4vw, 2.3rem); border: 1px solid var(--line); border-radius: var(--radius); background: rgba(10,25,42,.72); }
.evidence-panel h3 { display: flex; align-items: center; gap: .65rem; }
.evidence-panel ul { margin: 1.4rem 0 0; padding: 0; list-style: none; }
.evidence-panel li { position: relative; padding: .75rem 0 .75rem 1.6rem; border-top: 1px solid var(--line); color: var(--muted); }
.evidence-panel li::before { content: "✓"; position: absolute; left: 0; color: var(--lime); }
.evidence-panel.gaps li::before { content: "→"; color: var(--amber); }
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.principle { padding: 1.2rem; border-top: 1px solid var(--cyan); background: linear-gradient(180deg, rgba(97,218,251,.06), transparent); }
.principle strong { display: block; margin-bottom: .5rem; }
.principle p { margin: 0; color: var(--muted); font-size: .86rem; }
.source-list { display: grid; gap: .75rem; padding: 0; list-style: none; }
.source-list a { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.source-list span { color: var(--muted); }
.source-list a::after { content: "↗"; color: var(--lime); }
.cta { padding: clamp(2rem, 6vw, 4rem); border: 1px solid rgba(173,255,122,.3); border-radius: calc(var(--radius) + 8px); background: radial-gradient(circle at 80% 15%, rgba(173,255,122,.12), transparent 30rem), var(--surface); text-align: center; }
.cta p { max-width: 680px; margin: 0 auto; color: var(--muted); }
.cta .actions { justify-content: center; }

.roadmap-hero { padding: 5rem 0 3rem; }
.roadmap-grid { display: grid; gap: 1rem; }
.roadmap-step { display: grid; grid-template-columns: 130px 1fr; gap: 2rem; padding: 1.6rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.roadmap-step .period { color: var(--lime); font: 750 .85rem ui-monospace, SFMono-Regular, Menlo, monospace; }
.roadmap-step p { margin: .5rem 0 0; color: var(--muted); }
.deliverables { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
.deliverables span { padding: .3rem .55rem; border: 1px solid var(--line); border-radius: 7px; color: var(--cyan); font-size: .75rem; }
.truth-note { padding: 1.25rem; border-left: 3px solid var(--amber); background: rgba(255,212,121,.06); color: var(--muted); }

.site-footer { margin-top: 4rem; border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; gap: 2rem; padding: 2rem 0; color: var(--muted); font-size: .82rem; }
.footer-inner p { margin: 0; }

@media (max-width: 900px) {
  .hero-grid, .evidence-layout { grid-template-columns: 1fr; }
  .hero-grid { gap: 2.5rem; }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principles { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links { position: absolute; inset: 72px 0 auto; display: none; padding: 1rem; border-bottom: 1px solid var(--line); background: #07111f; flex-direction: column; align-items: flex-start; }
  .nav-links.open { display: flex; }
  .section-heading { align-items: start; flex-direction: column; }
  .project-grid, .principles { grid-template-columns: 1fr; }
  .roadmap-step { grid-template-columns: 1fr; gap: .5rem; }
  .footer-inner { flex-direction: column; }
  h1 { font-size: clamp(2.7rem, 16vw, 4.4rem); }
}

@media (prefers-reduced-motion: no-preference) {
  .card, .button { transition: transform .2s ease, border-color .2s ease; }
}