:root { --bg: #fbfaf7; --fg: #1d1d1f; --muted: #6b6b70; --card: #fff; --line: #e6e3dc; --accent: #e4572e; }
@media (prefers-color-scheme: dark) { :root { --bg: #151517; --fg: #f2f2f4; --muted: #a0a0a8; --card: #1f1f23; --line: #2e2e33; } }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--fg); }
main { max-width: 760px; margin: 0 auto; padding: 48px 20px 360px; }
h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.1; margin: 0 0 12px; }
p.lead { color: var(--muted); font-size: 18px; margin: 0 0 32px; }
a { color: var(--accent); }
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.card { display: block; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: inherit; text-decoration: none; }
.card:hover { border-color: var(--accent); }
.card b { display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 14px; }
code, pre { font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
pre { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; overflow-x: auto; }
button.demo { font: inherit; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: inherit; cursor: pointer; margin: 4px 6px 4px 0; }
.note { padding: 12px 14px; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 10px 10px 0; color: var(--muted); font-size: 14px; }