:root {
  color-scheme: dark;
  --bg: #0b0f0e;
  --surface: #141a18;
  --border: #2a3531;
  --text: #f2f5f3;
  --muted: #9aa8a2;
  --dim: #5e6b66;
  --amber: #f5b83d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  line-height: 1.75;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 24px 80px; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 36px; }
.mark {
  width: 44px; height: 44px; border-radius: 12px; background: var(--amber);
  color: var(--bg); display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.brand strong { font-size: 18px; }
.brand span { display: block; color: var(--muted); font-size: 11px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 16px; margin: 28px 0 8px; }
p, li { color: var(--muted); font-size: 14px; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 20px; margin: 14px 0;
}
a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
.nav { display: flex; gap: 18px; margin: 24px 0 8px; font-size: 13px; }
.footer { margin-top: 44px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--dim); font-size: 11px; }
.badge { display: inline-block; color: var(--amber); font-size: 11px; border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; margin-bottom: 14px; }