:root{--background:#fff;--foreground:#080a10;--muted:#f6f7fb;--muted-strong:#eef1f7;--card:#fff;--border:#e5e7ef;--text-muted:#667085;--primary:#4169e1;--primary-dark:#274bd8;--success:#00c853;--danger:#ea4335;--shadow:0 22px 60px #0f172a1a}html.dark{--background:#08090d;--foreground:#f8fafc;--muted:#12141a;--muted-strong:#1c1f27;--card:#090b10;--border:#20232d;--text-muted:#a1a8b5;--primary:#5b7cfa;--primary-dark:#4169e1;--shadow:0 24px 70px #00000047}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--foreground);margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}svg{width:1.25rem;height:1.25rem}.shell{width:min(1120px,100% - 2rem);margin:0 auto}.narrow{max-width:850px}.centered{text-align:center}.section{padding:6rem 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.mobile-menu{transform:translate(0)}.mobile-menu-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding-bottom:1rem;font-family:Space Grotesk,Inter,sans-serif;font-size:1.4rem;font-weight:800;display:flex}.mobile-menu-nav{gap:.35rem;padding-top:1.2rem;display:grid}.mobile-menu-nav button{text-align:left;border-radius:.8rem;width:100%;padding:1rem .85rem;font-size:1.05rem;font-weight:800;transition:color .17s,background .17s,transform .17s}.mobile-menu-nav button:hover{color:var(--primary);background:color-mix(in srgb, var(--primary) 10%, transparent);transform:translate(3px)}.icon-button,.theme-toggle{border:1px solid var(--border);background:var(--card);color:var(--foreground);border-radius:999px}.icon-button{place-items:center;width:2.6rem;height:2.6rem;display:grid}.theme-toggle{--toggle-width:3.9rem;--toggle-height:2.15rem;--toggle-padding:.24rem;--thumb-size:calc(var(--toggle-height) - (var(--toggle-padding) * 2));width:var(--toggle-width);height:var(--toggle-height);padding:var(--toggle-padding);justify-content:center;align-items:center;display:inline-flex;box-shadow:0 12px 28px #4169e11f}.theme-track{border-radius:999px;width:100%;height:100%;display:block;position:relative}.theme-thumb{z-index:1;width:var(--thumb-size);height:var(--thumb-size);background:#fff;border-radius:999px;transition:transform .24s cubic-bezier(.22,1,.36,1),background-color .18s;position:absolute;top:50%;left:0;transform:translateY(-50%);box-shadow:0 8px 16px #4169e12e}.theme-toggle[data-theme=dark] .theme-thumb{transform:translate(calc(var(--toggle-width) - (var(--toggle-padding) * 2) - var(--thumb-size)), 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