:root{--brand-blue:#1e3a8a;--brand-blue-hover:#1e40af;--brand-red:#dc2626;--bg:#ffffff;--bg-elev:#f1f5f9;--fg:#0f172a;--fg-dim:#475569;--fg-mute:#94a3b8;--border:#e2e8f0;--accent:var(--brand-blue);--accent-fg:#ffffff;--ghost-bg:transparent;--ghost-border:var(--border);--thumb-bg:#ffffff;--thumb-shadow:0 1px 2px rgba(0, 0, 0, 0.08);--radius:10px;--radius-lg:16px;--content-width:70rem;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}html.dark{--bg:#0b0f1a;--bg-elev:#1f2937;--fg:#f1f5f9;--fg-dim:#cbd5e1;--fg-mute:#64748b;--border:#1f2937;--accent:#3b5bdb;--ghost-border:#1f2937;--thumb-bg:#475569;--thumb-shadow:0 1px 2px rgba(0, 0, 0, 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