:root{--bg:#f7f9fc;--surface:#fff;--ink:#111827;--muted:#667085;--line:#e4e9f2;--blue:#2563eb;--violet:#7c3aed;--cyan:#06b6d4;--amber:#f59e0b;--navy:#0b1220;--radius:20px;--shadow:0 18px 50px rgba(15,35,75,.1);--max:1200px}html[data-theme=dark]{--bg:#0b1220;--surface:#141d2d;--ink:#f4f7ff;--muted:#aab6c9;--line:#2b3850;--shadow:0 18px 50px rgba(0,0,0,.3)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:400 18px/1.72 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}img{max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:3px solid var(--amber);outline-offset:3px}.wrap{width:min(calc(100% - 36px),var(--max));margin:auto}.skip{position:fixed;left:10px;top:10px;z-index:9999;transform:translateY(-150%);background:var(--surface);padding:10px 16px}.skip:focus{transform:none}.header{position:sticky;top:0;z-index:100;background:color-mix(in 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