:root{color-scheme:light;--ink:#17233d;--muted:#5c6780;--line:#dfe5ef;--link:#006dcc}
    *{box-sizing:border-box}body{margin:0;background:#f7f9fc;color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
    main{max-width:820px;margin:0 auto;padding:48px 24px 72px}article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:clamp(24px,5vw,52px);box-shadow:0 18px 50px rgba(25,42,75,.08)}
    h1{font-size:clamp(2rem,5vw,3rem);line-height:1.1;margin:.2em 0}h2{margin-top:2em;line-height:1.25}p,li{max-width:72ch}.meta,.notice{color:var(--muted)}
    .notice{border-left:4px solid #e3a008;background:#fff8e6;padding:12px 16px}a{color:var(--link)}nav{margin-bottom:24px}