:root {
  --bg: #0a1525;
  --card: #111d30;
  --text: #e8eef8;
  --muted: #9aa8c0;
  --accent: #3fd0e6;
  --line: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(63, 208, 230, 0.12), transparent 55%),
    radial-gradient(700px 420px at 100% 0%, rgba(124, 58, 237, 0.1), transparent 50%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
  max-width: 920px;
  margin: 0 auto;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.hero, .doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.kicker {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 28px;
  max-width: 38rem;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #3fd0e6, #7c3aed);
  color: #061018;
  font-weight: 700;
  text-decoration: none;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.doc .card {
  background: rgba(17, 29, 48, 0.92);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px;
}

.doc h1 { font-size: 1.85rem; margin-bottom: 4px; }
.doc .sub { color: var(--muted); margin: 0 0 8px; }
.doc .updated { color: var(--muted); font-size: 0.875rem; margin-bottom: 24px; }
.doc h2 { font-size: 1.05rem; margin: 24px 0 8px; }
.doc p { color: #c6d0e2; margin: 0 0 12px; }

.foot {
  border-top: 1px solid var(--line);
  padding: 20px 24px 32px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}