:root {
  --brand: #0f766e;
  --brand-dark: #115e59;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand: #5eead4;
    --brand-dark: #99f6e4;
    --ink: #e2e8f0;
    --muted: #94a3b8;
    --line: #1e293b;
    --bg: #0b1220;
    --card: #0f172a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
header { border-bottom: 1px solid var(--line); background: var(--card); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 14px; font-size: 14px; }
nav a:hover, a { color: var(--brand); }
main { padding: 32px 0 48px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 6px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
.table-scroll { overflow-x: auto; }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
.btn { display: inline-block; background: var(--brand); color: #fff; padding: 10px 18px; border-radius: 999px; text-decoration: none; font-weight: 600; }
@media (prefers-color-scheme: dark) { .btn { color: #042f2e; } }
.hero { text-align: center; padding: 24px 0 8px; }
.hero img { width: 88px; height: 88px; border-radius: 22px; }
.hero p { color: var(--muted); max-width: 560px; margin: 8px auto 20px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.features .card { margin: 0; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 20px 0 32px; }
footer a { margin-right: 14px; }