:root{color-scheme:light dark;--bg:#faf8f3;--ink:#17234d;--muted:#626b86;--line:#e9e7ef;--accent:#5145cd;--button:#5752f5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header,main,footer{width:min(100% - 40px,760px);margin:auto}header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:28px 0;border-bottom:1px solid var(--line)}.brand{font-weight:750;font-size:25px;text-decoration:none;color:var(--ink)}nav{font-size:15px}main{padding:56px 0 72px}h1{font-size:clamp(32px,6vw,48px);line-height:1.15;letter-spacing:-.03em;margin:12px 0 24px;overflow-wrap:break-word}h2{font-size:23px;line-height:1.3;margin:38px 0 12px}p,ul{margin:12px 0}li{margin:12px 0}.lead{font-size:21px;color:var(--muted)}.eyebrow,footer{color:var(--muted);font-size:14px}a{color:var(--accent);text-underline-offset:4px}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.button{display:inline-block;padding:12px 20px;border-radius:15px;background:var(--button);color:#fff;text-decoration:none;font-weight:650}footer{padding:24px 0 40px;border-top:1px solid var(--line)}.app-icon{border-radius:24px}@media(prefers-color-scheme:dark){:root{--bg:#161820;--ink:#f2f1fa;--muted:#b5b9ce;--line:#3d4050;--accent:#bcb5ff}}@media(max-width:400px){header{align-items:flex-start;flex-direction:column}main{padding-top:36px}}