:root {
  --indigo: #3949ab;
  --indigo-dark: #283593;
  --amber: #ffc107;
  --bg: #ffffff;
  --surface: #f4f5fb;
  --text: #1b1d2a;
  --muted: #5a5f73;
  --border: #e1e3ee;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12131a;
    --surface: #1c1e29;
    --text: #eceef7;
    --muted: #a8adc2;
    --border: #2c2f3f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--indigo); }
@media (prefers-color-scheme: dark) { a { color: #9fa8ff; } }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--border); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--text); text-decoration: none; }
.brand svg { width: 34px; height: 34px; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--text); }
.hero { padding: 64px 0 40px; text-align: center; }
.hero .logo { width: 112px; height: 112px; }
.hero h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.2; margin: 20px 0 12px; }
.hero p { color: var(--muted); font-size: 19px; max-width: 620px; margin: 0 auto; }
.price { display: inline-block; margin-top: 26px; padding: 10px 18px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; padding: 24px 0 48px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.doc { padding-top: 40px; padding-bottom: 64px; }
.doc h1 { font-size: 32px; margin-bottom: 4px; }
.doc .updated { color: var(--muted); margin-top: 0; }
.doc h2 { font-size: 21px; margin-top: 36px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid var(--border); }
footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; padding: 24px 0 40px; }
footer a { color: var(--muted); margin-right: 16px; }
@media (max-width: 520px) {
  .brand span { display: none; }
  nav a { margin-left: 14px; }
  .doc table { font-size: 14px; }
  .doc th, .doc td { padding: 8px 6px; }
}