:root{--bg:#f7f7fb;--surface:#fff;--text:#1c1c28;--muted:#6b6b80;--border:#e3e3ec;--accent:#4f46e5;--accent-hover:#4338ca;--error:#c62828;--success:#2e7d32;--banner:#fff7e0;--banner-border:#f2d38a}@media (prefers-color-scheme:dark){:root{--bg:#12121a;--surface:#1c1c27;--text:#ececf3;--muted:#9a9ab0;--border:#2e2e3d;--accent:#818cf8;--accent-hover:#a5b4fc;--error:#ef9a9a;--success:#a5d6a7;--banner:#2b2614;--banner-border:#5c4d1e}}*{box-sizing:border-box}body,html{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}a{color:var(--accent)}h1{font-size:1.8rem;margin:0 0 1rem}h2{font-size:1.15rem;margin:0 0 .75rem}.container{max-width:960px;margin:0 auto;padding:0 16px}main.container{padding-top:32px;padding-bottom:48px;min-height:calc(100vh - 140px)}.header{background:var(--surface);border-bottom:1px solid 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