:root{color-scheme:dark;--bg:#09111f;--panel:#101d31;--panel2:#14243b;--ink:#f1f5fb;--muted:#a4b3c8;--line:#273951;--cyan:#6ce2d2;--gold:#ffc976;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 14% -8%,#183554 0,transparent 44%),var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:var(--cyan);text-underline-offset:3px}a:hover{color:#b3fff4}button{font:inherit}.shell{width:min(var(--max),calc(100% - 40px));margin:auto}.topline{border-bottom:1px solid var(--line);background:#08101de8}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:800;letter-spacing:.02em;color:var(--ink);text-decoration:none}.brand b{color:var(--cyan)}.navlinks{display:flex;gap:22px}.navlinks a{text-decoration:none;color:#c6d3e3;font-size:.92rem}.hero{padding:78px 0 52px;max-width:850px}.eyebrow,.tag{color:var(--cyan);text-transform:uppercase;letter-spacing:.13em;font-size:.75rem;font-weight:750}.hero h1{font-size:clamp(2.5rem,7vw,5.4rem);line-height:.99;letter-spacing:-.055em;margin:.45em 0}.hero p{font-size:1.2rem;color:var(--muted);max-width:720px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;padding:11px 16px;border:1px solid var(--line);border-radius:8px;color:var(--ink);text-decoration:none;background:var(--panel)}.button.primary{background:var(--cyan);color:#07151a;border-color:var(--cyan);font-weight:750}.sectionhead{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:40px 0 18px}.sectionhead h2{margin:0;font-size:1.5rem}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{border:1px solid var(--line);background:linear-gradient(145deg,#14243a,#0d1829);border-radius:12px;padding:22px;min-height:180px}.card h2,.card h3{line-height:1.25;margin:.4rem 0 .7rem}.card p{color:var(--muted);margin:.4rem 0}.card a{font-weight:700}.meta{font-size:.82rem;color:var(--muted)}.search{width:100%;padding:14px 16px;background:#0b1728;border:1px solid #35506e;border-radius:9px;color:var(--ink);font:inherit}.search:focus{outline:2px solid var(--cyan);outline-offset:2px}.search-wrap{max-width:690px;margin:18px 0 26px}.article{max-width:790px;padding:55px 0 84px}.article h1{font-size:clamp(2.2rem,5vw,3.5rem);line-height:1.08;letter-spacing:-.04em;margin:.25em 0}.article h2{margin-top:2em;line-height:1.25}.article p,.article li{color:#d4deeb}.article li{padding-left:4px;margin:.4rem 0}.article blockquote{border-left:3px solid var(--cyan);padding-left:18px;color:var(--muted)}.article code{background:#182b43;padding:.12em .35em;border-radius:4px;color:#b5fbef}.article pre{overflow:auto;background:#07101d;border:1px solid var(--line);padding:18px;border-radius:8px}.article pre code{background:none;padding:0}.note{padding:16px 18px;border-left:3px solid var(--gold);background:#1a2432;color:#dce6f3;border-radius:0 8px 8px 0;margin:25px 0}.footer{border-top:1px solid var(--line);padding:28px 0 44px;color:var(--muted);font-size:.88rem}.footer a{margin-right:14px}.progress{color:var(--muted);font-size:.92rem}.modulecheck{display:flex;align-items:center;gap:9px;color:var(--muted);margin-top:18px}.modulecheck button{border:1px solid var(--line);border-radius:7px;padding:8px 11px;background:#132238;color:var(--ink);cursor:pointer}.modulecheck button[aria-pressed=true]{background:#17493f;border-color:#3d8b79;color:#dcfff8}.skip{position:absolute;left:-9999px}.skip:focus{left:15px;top:10px;background:#07111d;padding:10px;z-index:4}
@media(max-width:780px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{padding-top:58px}.nav{align-items:flex-start;padding:16px 0;flex-direction:column}.navlinks{gap:14px;flex-wrap:wrap}.shell{width:min(var(--max),calc(100% - 28px))}}
@media(max-width:540px){.grid{grid-template-columns:1fr}.hero h1{font-size:2.8rem}.card{min-height:unset}.sectionhead{align-items:start;flex-direction:column}}