:root{--brand-primary:#d98822;--brand-primary-light:#fff7ed;--brand-primary-soft:#fef0da;--brand-primary-dark:#b76412;--brand-primary-deep:#7a4009;--brand-surface:#ffffff;--brand-surface-alt:#f7f8fb;--brand-surface-raised:#ffffff;--brand-surface-deep:#0f172a;--brand-surface-muted:#eef2f7;--brand-text:#0f172a;--brand-text-strong:#020617;--brand-text-muted:#475569;--brand-text-soft:#64748b;--brand-text-subtle:#94a3b8;--brand-text-inverse:#f8fafc;--brand-border:#dfe7ef;--brand-border-strong:#cbd6e2;--brand-border-subtle:#f1f5f9;--brand-accent:#e89123;--brand-success:#059669;--brand-success-soft:#ecfdf5;--brand-danger:#dc2626;--brand-danger-soft:#fef2f2;--brand-progress:#e89123;--state-not-started:#e2e8f0;--state-in-progress:#e89123;--state-completed:#059669;--state-locked:#94a3b8;--feedback-correct:#059669;--feedback-correct-soft:#ecfdf5;--feedback-wrong:#dc2626;--feedback-wrong-soft:#fef2f2;--feedback-neutral:#64748b;--support-cyan:#06b6d4;--support-teal:#14b8a6;--support-violet:#7c3aed;--shadow-soft:0 1px 2px rgba(15,23,42,0.04);--shadow-card:0 1px 2px rgba(15,23,42,0.05),0 8px 24px rgba(15,23,42,0.04);--shadow-elevated:0 8px 24px rgba(15,23,42,0.08);--shadow-nav:0 14px 34px rgba(15,23,42,0.10);--overlay-dim:rgba(15,23,42,0.50);--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.625rem;--radius-xl:0.75rem;--radius-2xl:0.875rem;--radius-3xl:1rem;--radius-full:9999px}.dark{--brand-primary:#f09d38;--brand-primary-light:rgba(240,157,56,0.12);--brand-primary-soft:rgba(240,157,56,0.16);--brand-primary-dark:#ffb454;--brand-primary-deep:#ffe3cc;--brand-surface:#0f172a;--brand-surface-alt:#0c1322;--brand-surface-raised:#1e293b;--brand-surface-deep:#020617;--brand-surface-muted:#1e293b;--brand-text:#f8fafc;--brand-text-strong:#ffffff;--brand-text-muted:#cbd5e1;--brand-text-soft:#94a3b8;--brand-text-subtle:#64748b;--brand-text-inverse:#0f172a;--brand-border:#1e293b;--brand-border-strong:#334155;--brand-border-subtle:#1e293b;--brand-accent:#f09d38;--brand-success:#34d399;--brand-success-soft:rgba(52,211,153,0.12);--brand-danger:#f87171;--brand-danger-soft:rgba(248,113,113,0.12);--brand-progress:#f09d38;--state-not-started:#334155;--state-in-progress:#f09d38;--state-completed:#34d399;--state-locked:#64748b;--feedback-correct:#34d399;--feedback-correct-soft:rgba(52,211,153,0.12);--feedback-wrong:#fb7185;--feedback-wrong-soft:rgba(251,113,133,0.12);--feedback-neutral:#94a3b8;--support-cyan:#22d3ee;--support-teal:#5eead4;--support-violet:#a78bfa;--shadow-soft:0 1px 2px rgba(0,0,0,0.30);--shadow-card:0 1px 3px rgba(0,0,0,0.20),0 6px 16px rgba(0,0,0,0.15);--shadow-elevated:0 4px 12px rgba(0,0,0,0.25),0 16px 40px rgba(0,0,0,0.20);--shadow-nav:0 18px 50px rgba(0,0,0,0.40);--overlay-dim:rgba(2,6,23,0.65)}