:root,[data-theme=dark]{--bg: #0a0c10;--surface: #12151c;--surface2: #1a1f2a;--border: rgba(255, 255, 255, .08);--text: #e6e9ef;--muted: #8b93a7;--accent: #6b8cff;--accent2: #3dd6c3;--warn: #f0b429;--danger: #f87171;--hero-gradient: linear-gradient(120deg, #fff 0%, #a8b8e8 100%);--explain-bg: linear-gradient(160deg, rgba(107, 140, 255, .08), transparent);--error-bg: rgba(248, 113, 113, .12);--error-border: rgba(248, 113, 113, .35);--error-text: #fecaca;--badge-bg: rgba(107, 140, 255, .2);--badge-text: #b8c8ff;--dropzone-hover-border: rgba(107, 140, 255, .45);--btn-hover-border: rgba(107, 140, 255, .4);--leaderboard-row-bg: var(--surface2);--leaderboard-fill: color-mix(in srgb, var(--accent) 16%, transparent);--leaderboard-hover: color-mix(in srgb, var(--accent) 28%, var(--border));--leaderboard-podium-1-border: #e8b923;--leaderboard-podium-1-bg: linear-gradient(90deg, rgba(232, 185, 35, .1) 0%, var(--surface2) 52%);--leaderboard-podium-1-rank: #e8b923;--leaderboard-podium-2-border: #94a3b8;--leaderboard-podium-2-bg: linear-gradient(90deg, rgba(148, 163, 184, .12) 0%, var(--surface2) 52%);--leaderboard-podium-2-rank: #94a3b8;--leaderboard-podium-3-border: #c97a2d;--leaderboard-podium-3-bg: linear-gradient(90deg, rgba(201, 122, 45, .1) 0%, var(--surface2) 52%);--leaderboard-podium-3-rank: #d4a574;--radius: 14px;--font: "DM Sans", system-ui, sans-serif;--mono: "JetBrains Mono", ui-monospace, monospace}[data-theme=light]{--bg: #f1f5f9;--surface: #ffffff;--surface2: #e2e8f0;--border: rgba(15, 23, 42, .1);--text: #0f172a;--muted: #64748b;--accent: #4f46e5;--accent2: #0d9488;--warn: #d97706;--danger: #dc2626;--hero-gradient: linear-gradient(120deg, #0f172a 0%, #4f46e5 55%, #6366f1 100%);--explain-bg: linear-gradient(160deg, rgba(79, 70, 229, .08), transparent);--error-bg: rgba(220, 38, 38, .08);--error-border: rgba(220, 38, 38, .25);--error-text: #991b1b;--badge-bg: rgba(79, 70, 229, .12);--badge-text: #4338ca;--dropzone-hover-border: rgba(79, 70, 229, 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