:root{--bg:#070a12;--bg-2:#0a0f1a;--panel:#0e1422;--panel-2:#121a2b;--line:#ffffff17;--line-2:#ffffff0e;--ink:#eaf0fa;--ink-2:#c2ccdd;--muted:#8593ab;--muted-2:#5c6a82;--accent:#ff7a3d;--accent-2:#ffb152;--accent-3:#ffd27a;--accent-soft:#ff7a3d24;--on-accent:#241201;--rail-bg:#080c14b8;--ghost-bg:#ffffff08;--ghost-bg-h:#ffffff12;--ghost-bd-h:#ffffff38;--flag-fg:#ff7a6b;--ease:cubic-bezier(.22, .68, .16, 1);--r:13px;--r-lg:18px}:root[data-theme=light]{--bg:#f4f7fb;--bg-2:#eaeff6;--panel:#fff;--panel-2:#f4f7fb;--line:#1122401c;--line-2:#11224011;--ink:#0f1b2d;--ink-2:#33425a;--muted:#5c6b82;--muted-2:#8294ac;--accent:#e2641e;--accent-2:#f2912f;--accent-3:#f0a53c;--accent-soft:#e2641e1a;--on-accent:#fff;--rail-bg:#f4f7fbd1;--ghost-bg:#fff;--ghost-bg-h:#fff;--ghost-bd-h:#11224047;--flag-fg:#d6492f}.brief-page{background:var(--bg);color:var(--ink);scroll-behavior:smooth;min-height:100vh;transition:background .4s,color .4s}html{scroll-behavior:smooth}.brief-page h1,.brief-page h2,.brief-page 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