:root { color-scheme: light; font-family: Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; color: #172033; background: #f7f8fc; }
* { box-sizing: border-box; }
body { margin: 0; }
header { padding: 22px 24px; border-bottom: 1px solid #e5e7eb; background: white; }
header a { color: #4338ca; text-decoration: none; font-weight: 800; }
main { width: min(860px,calc(100% - 32px)); margin: 42px auto 80px; padding: 42px; border: 1px solid #e5e7eb; border-radius: 24px; background: white; box-shadow: 0 18px 60px rgba(15,23,42,.07); }
h1 { margin: 0 0 8px; font-size: clamp(30px,5vw,46px); letter-spacing: -.04em; }
h2 { margin-top: 34px; font-size: 21px; }
p,li { line-height: 1.75; color: #475569; }
.meta,.notice { padding: 14px 16px; border-radius: 12px; background: #eef2ff; color: #3730a3; font-size: 14px; }
.notice { background: #fff7ed; color: #9a3412; }
nav { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; padding-top: 22px; border-top: 1px solid #e5e7eb; }
nav a { color: #4338ca; }
@media(max-width:600px) { main { padding: 26px 22px; margin-top: 20px; } }