:root { --navy: #1D3C78; --ink: #10172A; --muted: #5B6475; --bg: #FFFFFF; --line: #E4E8F0; }
@media (prefers-color-scheme: dark) {
  :root { --navy: #8AA9F0; --ink: #EEF1F7; --muted: #A3ABBA; --bg: #0F1424; --line: #262D40; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 80px; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; padding-top: 20px; border-top: 1px solid var(--line); }
a { color: var(--navy); }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.muted { color: var(--muted); font-size: 15px; }
.lang { text-align: right; margin: 0; font-size: 15px; }
.icon { border-radius: 22px; display: block; margin-bottom: 16px; }