:root { color-scheme: light; font-family: system-ui, sans-serif; color: #202b35; background: #f6f8fa; line-height: 1.7; }
* { box-sizing: border-box; }
body { margin: 0; }
header, main, footer { max-width: 780px; margin: auto; padding: 24px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid #dce3e9; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
a { color: #1759a1; text-underline-offset: 3px; }
.brand { font-weight: 700; color: inherit; text-decoration: none; }
main { padding-top: 48px; padding-bottom: 48px; min-height: 60vh; }
h1 { font-size: clamp(1.9rem, 6vw, 2.8rem); line-height: 1.2; overflow-wrap: anywhere; letter-spacing: -.035em; }
h2 { margin-top: 32px; font-size: 1.25rem; }
.lead { font-size: 1.2rem; color: #465665; }
.notice { padding: 18px 22px; border-left: 4px solid #b27410; background: #fff4dc; border-radius: 4px; }
footer { border-top: 1px solid #dce3e9; color: #536272; font-size: .9rem; }
:focus-visible { outline: 3px solid #1759a1; outline-offset: 4px; }