[data-tree=next]{--color-brand-cyan:#29b6e8;--color-brand-cyan-dark:#1d8fbf;--color-brand-cyan-soft:#dff3fb;--color-navy-50:#f0f4f8;--color-navy-100:#d9e2ec;--color-navy-200:#bcccdc;--color-navy-300:#9fb3c8;--color-navy-400:#829ab1;--color-navy-500:#627d98;--color-navy-600:#486581;--color-navy-700:#334e68;--color-navy-800:#243b53;--color-navy-900:#102a43;--color-navy-950:#0a1929;--color-gold-50:#fffbea;--color-gold-100:#fff3c4;--color-gold-200:#fce588;--color-gold-300:#fadb5f;--color-gold-400:#f7c948;--color-gold-500:#f0b429;--color-gold-600:#de911d;--color-gold-700:#cb6e17;--color-gold-800:#b44d12;--color-gold-900:#8d2b0b;--color-slate-50:#f8fafc;--color-slate-100:#f1f5f9;--color-slate-200:#e2e8f0;--color-slate-300:#cbd5e1;--color-slate-400:#94a3b8;--color-slate-500:#64748b;--color-slate-600:#475569;--color-slate-700:#334155;--color-slate-800:#1e293b;--color-slate-900:#0f172a;--color-app-primary:var(--color-navy-900);--color-app-primary-hover:var(--color-navy-800);--color-app-primary-soft:#102a430f;--color-app-primary-ring:#102a431f;--color-app-highlight:var(--color-gold-500);--color-app-highlight-hover:var(--color-gold-400);--color-app-highlight-soft:#f0b4291f;--color-app-accent:var(--color-app-primary);--color-app-accent-hover:var(--color-app-primary-hover);--color-app-accent-soft:var(--color-app-primary-soft);--color-success:#5ba876;--color-danger:#d97775;--color-amber:#c2993e;--color-success-bg:#5ba87624;--color-danger-bg:#d9777524;--color-diff-easy-bg:#dcfce7;--color-diff-easy-bd:#86efac;--color-diff-easy-fg:#166534;--color-diff-med-bg:#fef9c3;--color-diff-med-bd:#fde047;--color-diff-med-fg:#854d0e;--color-diff-hard-bg:#fee2e2;--color-diff-hard-bd:#fca5a5;--color-diff-hard-fg:#991b1b;--color-diff-vhard-bg:#fce7f3;--color-diff-vhard-bd:#f9a8d4;--color-diff-vhard-fg:#9d174d;--color-diff-extreme-bg:#ede9fe;--color-diff-extreme-bd:#c4b5fd;--color-diff-extreme-fg:#5b21b6;--bg:#f9fafb;--bg-tint:#f4f6fa;--bg-paper:#fbf8f1;--bg-white:#fff;--card:#fff;--fg1:#111827;--fg2:#475569;--fg3:#6b7280;--border:#11182714;--border-strong:#1118272e;--color-subject-math:var(--tile-math-fg);--color-subject-math-soft:var(--tile-math-bg);--color-subject-rw:var(--tile-rw-fg);--color-subject-rw-soft:var(--tile-rw-bg);--tile-math-bg:#e0ecff;--tile-math-fg:#2f5fcc;--tile-rw-bg:#ffe9d6;--tile-rw-fg:#c85a1a;--tile-navy-bg:#f0f4f8;--tile-navy-fg:#243b53;--tile-gold-bg:#fff3c4;--tile-gold-fg:#cb6e17;--tile-cyan-bg:#dff3fb;--tile-cyan-fg:#1d8fbf;--tile-success-bg:#dcfce7;--tile-success-fg:#2f7d4f;--tile-danger-bg:#fee2e2;--tile-danger-fg:#b8413e;--tile-amber-bg:#fef9c3;--tile-amber-fg:#92731f;--tile-violet-bg:#ede9fe;--tile-violet-fg:#5e3fbf;--tile-pink-bg:#fce7f3;--tile-pink-fg:#a83961;--tile-slate-bg:#f1f5f9;--tile-slate-fg:#334155;--font-serif:var(--font-playfair), "Playfair Display", ui-serif, Georgia, Cambria, "Times New Roman", serif;--font-sans:var(--font-inter), "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;--app-title-1:28px;--app-title-2:18px;--app-title-3:14px;--body-size:16px;--body-lh:1.65;--body-sm-size:14px;--body-sm-lh:1.5;--prose-size:15px;--prose-lh:1.65;--eyebrow-size:11px;--eyebrow-weight:700;--eyebrow-tracking:.08em;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:96px;--radius-none:0;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-2xl:24px;--radius-pill:999px;--shadow-none:none;--shadow-sm:0 1px 3px #0000000a;--shadow-md:0 4px 14px #102a4314;--shadow-lg:0 8px 30px #102a431f;--shadow-ring-accent:0 0 0 3px var(--color-app-accent-soft);--shadow-ring-success:0 0 0 3px #5ba87624;--shadow-ring-danger:0 0 0 3px #d9777524;--ease-std:cubic-bezier(.4, 0, .2, 1);--ease-out:cubic-bezier(0, 0, .2, 1);--dur-fast:.12s;--dur-base:.18s;--dur-slow:.3s}