:root {
  color-scheme: dark;
  --bg: #000000;
  --surface: #141416;
  --line: #2A2A2E;
  --ink: #F3F2EF;
  --mute: #9B9BA3;
  --faint: #6E6E76;
  --ember: #FF6A2B;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #FAF9F6;
    --surface: #FFFFFF;
    --line: #E0DED9;
    --ink: #18181B;
    --mute: #6B6B70;
    --faint: #9A9AA0;
    --ember: #E2531A;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 48px 20px 64px; }

a { color: var(--ember); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: 20px; }
.brand img { width: 40px; height: 40px; }

.hero { padding: 72px 0 48px; }
.hero h1 { font-size: clamp(40px, 9vw, 64px); line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 16px; }
.hero h1 { text-wrap: balance; }
.hero h1 span { color: var(--ember); white-space: nowrap; }
.hero p { font-size: 20px; color: var(--mute); margin: 0; max-width: 34ch; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 20px; }
.card h2 { font-size: 17px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--mute); font-size: 15px; }

.promise { margin: 48px 0 0; padding: 24px; border-radius: 20px; border: 1px solid var(--line); }
.promise h2 { margin: 0 0 8px; font-size: 20px; }
.promise p { margin: 0; color: var(--mute); }

.doc h1 { font-size: 36px; letter-spacing: -0.01em; margin: 48px 0 4px; }
.doc .updated { color: var(--faint); margin: 0 0 32px; font-size: 15px; }
.doc h2 { font-size: 21px; margin: 40px 0 8px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }

footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--faint); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { color: var(--mute); }