* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #182033; background: #f7f9fc; }
.site-nav { background: #0f172a; padding: 13px 20px; }
.site-nav div { width: min(980px, 100%); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-nav a { color: #fff; text-decoration: none; font-weight: 750; }
.site-nav .links { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; }
header { background: linear-gradient(135deg, #0f5ea8, #172554); color: #fff; padding: 42px 20px; text-align: center; }
header h1 { font-size: clamp(1.7rem, 4vw, 2.55rem); margin: 0; font-weight: 850; }
header p { margin: 9px 0 0; font-size: .98rem; opacity: .9; }
main { width: min(940px, calc(100% - 32px)); margin: 32px auto 64px; background: #fff; border: 1px solid #e4e9f2; border-radius: 12px; padding: clamp(24px, 4vw, 44px); box-shadow: 0 12px 34px rgba(15, 94, 168, .08); }
h2 { color: #0f5ea8; font-size: 1.12rem; margin: 31px 0 10px; }
h2:first-of-type { margin-top: 0; }
h3 { color: #1e3a5f; margin: 21px 0 8px; font-size: 1rem; }
p, li { color: #374151; font-size: .97rem; line-height: 1.72; }
ul, ol { padding-left: 22px; margin-top: 8px; }
li { margin-bottom: 6px; }
a { color: #0f5ea8; font-weight: 650; }
.notice { background: #eef6ff; border: 1px solid #c7def8; border-radius: 9px; padding: 15px 17px; margin-bottom: 25px; }
.warning { background: #fff7ed; border: 1px solid #fed7aa; border-radius: 9px; padding: 15px 17px; margin: 18px 0; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 18px; }
.card { border: 1px solid #dbe5f0; border-radius: 10px; padding: 17px; background: #fbfdff; }
.card h2, .card h3 { margin-top: 0; }
footer { color: #718096; font-size: .85rem; text-align: center; padding: 25px 16px 38px; }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 9px 16px; margin-bottom: 13px; }
@media (max-width: 520px) { .site-nav div { justify-content: center; } main { width: min(100% - 20px, 940px); } }