:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --line: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-ink: #0c4a6e;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; text-decoration: none; }
.mark { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-weight: 800; }
.links { display: flex; gap: 18px; font-size: 15px; }
.links a { color: var(--muted); text-decoration: none; }
.links a:hover, .links a[aria-current] { color: var(--text); }

main { padding-top: 40px; padding-bottom: 48px; }
h1 { font-size: clamp(28px, 6vw, 40px); line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 24px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 4px 0; }

.hero { padding: 16px 0 8px; }
.lead { color: var(--muted); font-size: 19px; max-width: 34em; }
.features { list-style: none; padding: 0; margin: 32px 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.features li { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.features h3 { margin: 0 0 4px; color: var(--accent); }
.features p { margin: 0; color: var(--muted); font-size: 15px; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 700; padding: 12px 20px; border-radius: 12px; text-decoration: none; }

.foot { border-top: 1px solid var(--line); padding-top: 20px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }
.langs { display: flex; gap: 16px; flex-wrap: wrap; }
.langs span { color: var(--text); font-weight: 600; }