:root{color-scheme:light dark;--bg:#f7f8fa;--surface:#fff;--text:#24282b;--muted:#5b6268;--line:#d7dcdf;--accent:#155447;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg)}
*{box-sizing:border-box}body{margin:0}a{color:var(--accent);text-underline-offset:.22em;overflow-wrap:anywhere}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:3px}header,main,footer{max-width:768px;margin:auto;padding:24px}header{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);font-weight:700;text-decoration:none}.brand img{width:44px;height:44px;border-radius:12px}nav{display:flex;gap:20px;flex-wrap:wrap}nav a{display:inline-flex;align-items:center;min-height:48px;font-size:.9rem}main{padding-top:48px;padding-bottom:64px}h1{font-size:clamp(2rem,6vw,3rem);line-height:1.15;letter-spacing:-.035em;margin:0 0 20px}h2{font-size:1.25rem;line-height:1.4;margin:32px 0 12px}p{margin:12px 0}ul,ol{padding-left:24px}li{margin:10px 0}.intro{color:var(--muted);font-size:1.1rem}.panel{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:24px;margin:28px 0}.panel h2:first-child{margin-top:0}.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:10px 20px;border-radius:16px;background:var(--accent);color:var(--surface);text-decoration:none;font-weight:600}.note{border-left:3px solid var(--line);padding-left:16px;color:var(--muted);font-size:.9rem}footer{border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}.skip{position:absolute;top:-100px;left:16px;background:var(--surface);padding:12px}.skip:focus{top:12px}@media(prefers-color-scheme:dark){:root{--bg:#141618;--surface:#202426;--text:#f0f2f3;--muted:#b8c0c2;--line:#454c50;--accent:#afe9cd}}@media(max-width:420px){header,main,footer{padding-left:20px;padding-right:20px}header{gap:8px}nav{gap:16px}.panel{padding:20px}}