:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172b4d;
  background: #f4f6f9;
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
a { color: #9f171c; }
.topbar { background: #111827; color: white; padding: 18px 24px; }
.topbar-inner, main, footer { width: min(920px, calc(100% - 36px)); margin: auto; }
.brand { font-weight: 800; letter-spacing: .03em; }
.topbar a { color: #fff; text-decoration: none; }
.topbar nav { float: right; font-size: .92rem; }
.topbar nav a + a { margin-left: 18px; }
main { background: white; margin-top: 32px; margin-bottom: 32px; padding: clamp(25px, 5vw, 56px); border-radius: 14px; box-shadow: 0 8px 30px rgba(15, 23, 42, .08); }
h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 12px; }
h2 { margin-top: 2.2rem; font-size: 1.35rem; }
h3 { margin-top: 1.5rem; font-size: 1.05rem; }
.updated, .note { color: #64748b; }
.summary { background: #f8fafc; border-left: 4px solid #b71c1c; padding: 16px 18px; margin: 28px 0; }
li + li { margin-top: 7px; }
.contact { background: #172b4d; color: white; border-radius: 10px; padding: 20px; }
.contact a { color: white; }
footer { color: #64748b; padding: 0 0 34px; font-size: .9rem; text-align: center; }
@media (max-width: 620px) { .topbar nav { float: none; display: block; margin-top: 10px; } }