:root { color: #1d2635; background: #f5f7fc; font: 16px/1.65 "DM Sans", system-ui, sans-serif; }
body { margin: 0; }
main { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 72px; }
h1, h2 { font-family: Inter, system-ui, sans-serif; color: #162d63; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 24px 0 8px; }
h2 { margin-top: 2.2em; font-size: 1.35rem; }
.effective { color: #4d5d73; font-weight: 700; }
a { color: #28489d; }
.back { font-weight: 700; text-decoration: none; }
.back:hover { text-decoration: underline; }
@media (max-width: 600px) { main { padding-top: 28px; } }