:root {
  color-scheme: light dark;
  --bg: #f7fbfa;
  --fg: #153331;
  --muted: #58716e;
  --line: #d7e8e4;
  --accent: #087f78;
  --accent-strong: #05645f;
  --card: #ffffff;
  --tint: #dff4ef;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #071413;
    --fg: #effbf8;
    --muted: #a0bbb6;
    --line: #24403c;
    --accent: #61d5c4;
    --accent-strong: #8be5d6;
    --card: #10211f;
    --tint: #123733;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; gap: 10px; }
.mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #087f78, #64d6bd);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 15px;
  font-weight: 800;
}
.brand { font-weight: 700; letter-spacing: -0.2px; }
header.site nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
.hero {
  padding: 82px 0 64px;
  text-align: center;
  background: radial-gradient(circle at 50% 0, var(--tint), transparent 58%);
}
.hero h1 { font-size: 48px; line-height: 1.06; letter-spacing: -1.4px; margin: 0 0 16px; }
.hero p { font-size: 20px; color: var(--muted); margin: 0 auto; max-width: 34rem; }
.features {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  padding: 8px 0 72px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.feature h3 { margin: 0 0 6px; font-size: 17px; }
.feature p { margin: 0; font-size: 15px; color: var(--muted); }
main.doc { padding: 52px 0 80px; }
main.doc h1 { font-size: 34px; letter-spacing: -0.7px; margin: 0 0 6px; }
main.doc .updated { color: var(--muted); font-size: 15px; margin: 0 0 34px; }
main.doc h2 { font-size: 20px; margin: 36px 0 8px; letter-spacing: -0.2px; }
main.doc p, main.doc li { color: var(--fg); }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 6px 0; }
.callout {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 20px 0;
  font-size: 16px;
}
footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 56px;
  color: var(--muted);
  font-size: 14px;
}
footer.site .wrap { display: flex; gap: 18px; flex-wrap: wrap; }
footer.site .spacer { margin-left: auto; }
@media (max-width: 540px) {
  .hero { padding-top: 60px; }
  .hero h1 { font-size: 40px; }
  header.site nav { gap: 12px; }
}