:root { --ink: #12305a; --muted: #5a6f8c; --blue: #1f5fd1; --line: #dbe4f0; --bg: #f4f8fd; --card: #fff; }
@media (prefers-color-scheme: dark) { :root { --ink: #e8eefc; --muted: #9fb0cc; --blue: #7fb0ff; --line: #26324d; --bg: #0d1424; --card: #141d33; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
header { background: linear-gradient(135deg, #3d9bff, #1f5fd1 60%, #123f9e); color: #fff; padding: 22px 16px 26px; }
.top { max-width: 760px; margin: 0 auto; display: flex; align-items: center; gap: 12px; }
.top img { width: 52px; height: 52px; filter: drop-shadow(0 3px 6px rgba(0,0,0,.25)); }
.top a { color: #fff; text-decoration: none; }
.top b { display: block; font-size: 20px; line-height: 1.1; }
.top small { opacity: .9; font-weight: 600; }
main { max-width: 760px; margin: -12px auto 0; padding: 0 16px 40px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 22px 22px 8px; box-shadow: 0 6px 20px rgba(10, 30, 80, .06); }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 26px 0 6px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
a { color: var(--blue); }
li { margin: 4px 0; }
.note { background: color-mix(in srgb, var(--blue) 10%, transparent); border-radius: 12px; padding: 12px 14px; margin: 14px 0; }
footer { max-width: 760px; margin: 0 auto; padding: 0 16px 30px; color: var(--muted); font-size: 14px; }
footer a { margin-right: 14px; }
.links { display: grid; gap: 12px; margin: 10px 0 18px; }
.links a { display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; color: var(--ink); background: var(--bg); }
.links a b { color: var(--blue); }
.btn { display: inline-block; background: var(--blue); color: #fff !important; text-decoration: none; font-weight: 700; padding: 12px 22px; border-radius: 999px; margin: 6px 0 14px; }
.center { text-align: center; }
.big { font-size: 54px; line-height: 1; margin: 6px 0 8px; }