/* Public editorial surface, using the accepted V6 palette and typography. */
:root{color-scheme:light dark;--bg:#f2f5fa;--card:#fff;--ink:#18263a;--muted:#687b91;--line:#dce4ee;--blue:#0067ed}
@media(prefers-color-scheme:dark){:root{--bg:#0d1726;--card:#19283d;--ink:#f3f7ff;--muted:#a9bad1;--line:#344a64;--blue:#66aaff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 'DM Sans','Inter',-apple-system,sans-serif}a{color:var(--blue);text-underline-offset:3px}a:focus-visible{outline:3px solid var(--blue);outline-offset:4px}header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:12px max(18px,calc((100% - 960px)/2));background:var(--card);border-bottom:1px solid var(--line)}header img{object-fit:contain;max-width:100%;display:block}header nav{display:flex;gap:20px;flex-wrap:wrap}main{max-width:880px;margin:32px auto;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:19px}h1{font-size:clamp(28px,4vw,40px);line-height:1.2;font-weight:700}h2{font-size:22px;margin-top:30px}p,li{overflow-wrap:anywhere}li{margin-bottom:10px}.primary{display:inline-block;border-radius:13px;padding:12px 18px;background:var(--blue);color:var(--card);font-weight:700}.how-to-start p,footer{color:var(--muted);font-size:14px}footer{text-align:center;padding:20px}.skip{position:fixed;top:-100px;left:10px;padding:10px;background:var(--card);z-index:10}.skip:focus{top:10px}@media(max-width:600px){main{margin:12px;padding:20px}header{padding:12px 18px}header img{width:140px;height:80px}}