:root { color-scheme: dark; --ink: #f5f7fb; --muted: #a7b0c2; --line: #293041; --accent: #8bc4ff; --panel: #121824; --page: #090d14; }
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 80% 0%, #18253e 0, transparent 30rem), var(--page); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.6; }
.page { width: min(100% - 2.5rem, 72rem); margin: auto; min-height: 100vh; display: flex; flex-direction: column; }
.site-header { display: flex; justify-content: space-between; align-items: baseline; padding: 2rem 0; border-bottom: 1px solid var(--line); gap: 1rem; }
.brand { color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: .18em; font-size: .9rem; }
.tagline, .updated { color: var(--muted); font-size: .9rem; }
.hero { padding: 8rem 0 5rem; max-width: 53rem; }
.eyebrow { color: var(--accent); font-size: .75rem; letter-spacing: .15em; font-weight: 700; }
h1 { font-size: clamp(2.6rem, 7vw, 5.8rem); letter-spacing: -.06em; line-height: 1.02; margin: .5rem 0 1.6rem; }
.lede { max-width: 42rem; color: var(--muted); font-size: 1.15rem; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-bottom: 6rem; }
.grid article { background: color-mix(in srgb, var(--panel) 85%, transparent); border: 1px solid var(--line); border-radius: .75rem; padding: 1.5rem; }
h2 { font-size: 1.2rem; margin: 0 0 .6rem; }
.grid p, .document p { color: var(--muted); margin-top: 0; }
.document { max-width: 48rem; padding: 5rem 0 6rem; }
.document h1 { font-size: clamp(2.5rem, 6vw, 4.4rem); }
.document h2 { margin-top: 2.5rem; }
a { color: var(--accent); }
footer { margin-top: auto; border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem; display: flex; justify-content: space-between; color: var(--muted); font-size: .9rem; }
footer nav { display: flex; gap: 1rem; }
@media (max-width: 680px) { .site-header, footer { align-items: flex-start; flex-direction: column; } .hero { padding: 5rem 0 3rem; } .grid { grid-template-columns: 1fr; } }