:root {
  --bg: #ffffff;
  --fg: #12161b;
  --muted: #5a6470;
  --line: #e3e7ec;
  --soft: #f4f6f8;
  --accent: #0b7a3e;
  --max: 920px;
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --fg: #eef1f4;
    --muted: #a2acb7;
    --line: #2a3038;
    --soft: #1a1f25;
    --accent: #43c47c;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); }
a { color: var(--accent); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
.brand img { width: 28px; height: 28px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--fg); }
.scale { display: flex; height: 6px; }
.scale span { flex: 1; }
.hero { padding: 56px 0 32px; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 0 0 16px; }
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 24px; }
.cta { display: inline-block; background: var(--accent); color: #fff; padding: 11px 18px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
section { padding: 28px 0; }
section h2 { font-size: 24px; margin: 0 0 14px; }
.demo { display: flex; gap: 14px; align-items: center; background: var(--soft); border: 1px solid var(--line); border-radius: 14px; padding: 16px; max-width: 460px; }
.badge { width: 72px; height: 72px; border-radius: 12px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 700; background: #ffff00; color: #000; flex-shrink: 0; }
.badge b { font-size: 28px; line-height: 1; }
.badge small { font-size: 10px; letter-spacing: .06em; margin-top: 4px; }
code, pre { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; }
code { padding: 1px 6px; font-size: 14px; }
pre { padding: 12px 14px; overflow-x: auto; }
.doc { padding: 40px 0 24px; max-width: 760px; }
.doc h1 { font-size: 32px; margin: 0 0 6px; }
.doc .updated { color: var(--muted); margin: 0 0 24px; }
.doc h2 { font-size: 20px; margin: 28px 0 8px; }
.doc li { margin: 4px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
footer.site { border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 0 36px; color: var(--muted); font-size: 14px; }
footer.site a { color: var(--muted); margin-right: 16px; }
@media (max-width: 560px) {
  nav a { margin-left: 0; margin-right: 14px; }
  .hero { padding-top: 36px; }
}