:root { font: 16px/1.6 system-ui, sans-serif; color: #18273a; background: #f2f5fa; }
* { box-sizing: border-box; }
body { margin: 0; }
header { background: #163e78; color: white; padding: 28px max(20px, calc((100% - 840px) / 2)); border-bottom: 5px solid #ad2034; }
header a { color: white; font-weight: 600; }
header h1 { margin: 12px 0 0; font-size: clamp(25px, 4vw, 36px); }
main { max-width: 880px; margin: 24px auto; background: white; padding: 24px; border-radius: 10px; }
h2 { color: #163e78; font-size: 21px; margin-top: 28px; }
a { color: #163e78; overflow-wrap: anywhere; }
footer { max-width: 880px; margin: 20px auto; padding: 0 24px 28px; display: flex; flex-wrap: wrap; gap: 20px; }
.effective { color: #4d6078; font-size: 14px; }