:root{color-scheme:light dark;font-family:system-ui,-apple-system,sans-serif;background:#f5f5ff;color:#20233e}*{box-sizing:border-box}body{margin:0}main{max-width:760px;margin:0 auto;padding:64px 24px}nav{display:flex;gap:22px;flex-wrap:wrap;margin:28px 0}a{color:#4946c9;text-underline-offset:4px}h1{font-size:clamp(2.3rem,7vw,4rem);line-height:1.08;letter-spacing:-.045em;margin:18px 0 26px}h2{font-size:1.3rem;margin-top:34px}p,li{font-size:1.06rem;line-height:1.7}li{margin:10px 0}.brand{font-size:.8rem;text-transform:uppercase;letter-spacing:.14em;font-weight:700}.lead{font-size:1.25rem;color:#4b526b}.card{padding:22px;border:1px solid #dcdcef;border-radius:20px;margin:24px 0;background:#fff}footer{margin-top:50px;color:#5c6374;font-size:.85rem}a:focus-visible{outline:3px solid #6264e4;outline-offset:5px}@media(prefers-color-scheme:dark){:root{background:#131322;color:#f0efff}a{color:#b4b6ff}.lead,footer{color:#babcd0}.card{background:#202036;border-color:#36364f}}