:root{color-scheme:dark;--bg:#171936;--ink:#eeebfa;--mute:#b8b7d3;--line:#3a3e72;--gold:#ffb347;--jade:#4ed1b0}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at top right,#2b2f60,transparent 60%),var(--bg);color:var(--ink);font:16px/1.85 system-ui,-apple-system,'Malgun Gothic',sans-serif}a{color:var(--jade);text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:5px}header,main,footer{max-width:1000px;margin:auto;padding:24px}header{display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line)}header a{font-weight:700;text-decoration:none}nav{display:flex;flex-wrap:wrap;gap:18px;font-size:14px}.crumb{font-size:14px;color:var(--mute)}.hero{padding:36px 0 30px;max-width:780px}.tag{color:var(--jade);font-weight:700;font-size:14px;letter-spacing:.04em}h1{font-size:clamp(32px,5vw,54px);line-height:1.3;margin:14px 0 22px;word-break:keep-all}h2{font-size:26px;line-height:1.4;margin:36px 0 16px}h3{font-size:20px;margin:0 0 12px}p{overflow-wrap:anywhere;word-break:keep-all}.lead{font-size:19px;color:var(--mute)}.cta{display:inline-block;background:var(--gold);color:var(--bg);padding:13px 24px;border-radius:12px;font-weight:750;text-decoration:none;min-height:48px}.small{color:var(--mute);font-size:14px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card,.note,details{border:1px solid var(--line);background:#20234a;border-radius:18px;padding:22px}.note{border-left:4px solid var(--jade);margin:24px 0}.steps{padding-left:24px}.steps li{padding:8px 0}details{margin:12px 0}summary{cursor:pointer;font-weight:700}details p{margin-bottom:0}footer{margin-top:36px;border-top:1px solid var(--line);font-size:14px;color:var(--mute)}.next{margin-top:36px} @media(max-width:600px){header,main,footer{padding:20px}.grid{grid-template-columns:1fr}header{align-items:flex-start;flex-direction:column}.hero{padding-top:26px}.cta{display:block;text-align:center}.lead{font-size:17px}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}