:root{color-scheme:light dark;--bg:#f8faff;--paper:white;--ink:#142039;--muted:#59677e;--line:#dfe5f1;--accent:#2859d8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.65}header,main,footer{max-width:1080px;margin:auto;padding:30px 34px}header{display:flex;align-items:center;justify-content:space-between}nav{display:flex;gap:24px}.brand{display:flex;gap:13px;align-items:center;font-size:20px;font-weight:600;letter-spacing:-.7px;color:var(--ink);text-decoration:none}.brand img{width:38px;height:38px}a{color:var(--accent);text-underline-offset:4px}nav a{color:var(--muted);font-size:14px;text-decoration:none}main{padding-top:70px;padding-bottom:80px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--accent)}h1{font-size:clamp(42px,7vw,76px);line-height:1.08;letter-spacing:-3px;font-weight:600;max-width:780px;margin:22px 0 26px}h2{font-weight:600;letter-spacing:-.6px}p{max-width:700px}.intro{font-size:20px;line-height:1.55;color:var(--muted);max-width:650px}.button{display:inline-block;background:var(--accent);color:white;text-decoration:none;padding:13px 21px;border-radius:9px;font-weight:500;margin:16px 0 10px}.small{font-size:13px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:75px;padding-top:30px;border-top:1px solid var(--line)}.grid h2{font-size:18px}.grid p{font-size:14px;color:var(--muted)}article{max-width:750px}article h1{font-size:48px;letter-spacing:-1.8px}article h2{font-size:23px;margin-top:35px}footer{font-size:12px;color:var(--muted);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px}footer span{font-weight:400}a:focus-visible{outline:3px solid var(--accent);outline-offset:4px}@media(max-width:650px){header,main,footer{padding-left:24px;padding-right:24px}main{padding-top:35px}.grid{grid-template-columns:1fr;gap:12px;margin-top:40px}footer{display:block}nav{gap:14px}h1{letter-spacing:-2px}}@media(prefers-color-scheme:dark){:root{--bg:#0d1423;--paper:#121d31;--ink:#ecf2ff;--muted:#a3b0c6;--line:#28354b;--accent:#7397ff}.button{background:#2859d8}}