:root {
  --yellow: #fece0a;
  --blue: #1d6a9c;
  --ink: #0b2540;
  --text: #1c1c1e;
  --muted: #5e6b78;
  --line: #e3e6ea;
  --bg: #f6f7f9;
  --card: #ffffff;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--blue); }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
header { background: var(--card); border-bottom: 1px solid var(--line); }
.bar { max-width: 880px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 20px; }
.mark { width: 36px; height: 36px; border-radius: 10px; background: var(--yellow); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; }
.mark i { display: block; width: 9px; border: 2.5px solid var(--blue); border-radius: 8px; }
.mark i:first-child { height: 9px; }
.mark i:last-child { height: 14px; }
nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--blue); }
main { max-width: 880px; margin: 0 auto; padding: 32px 20px 64px; }
.doc { background: var(--card); border-radius: 16px; padding: 28px 32px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; color: var(--ink); text-wrap: balance; }
h2 { font-size: 19px; margin: 28px 0 8px; color: var(--ink); }
.meta { color: var(--muted); margin: 0 0 20px; font-size: 14px; }
.doc p, .doc li { max-width: 68ch; }
.doc ul { padding-left: 22px; }
.hero { background: var(--yellow); }
.hero .inner { max-width: 880px; margin: 0 auto; padding: 56px 20px; }
.hero h1 { font-size: 40px; color: var(--ink); }
.hero p { font-size: 18px; color: var(--ink); max-width: 52ch; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 24px; }
.card { background: var(--card); border-radius: 14px; padding: 18px; }
.card b { color: var(--ink); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .bar { padding: 20px; }
@media (max-width: 560px) { .doc { padding: 20px; } .hero h1 { font-size: 32px; } nav { margin-left: 0; } }