:root{--primary-orange:#ff6a1c;--primary-brown:#5c3a21;--bg-color:#fafafa;--surface-color:#fff;--text-main:#1a1a1a;--text-muted:#666;--border-color:#e0e0e0;--color-correct:#4caf50;--color-incorrect:#f44336;--border-radius-md:12px;--border-radius-lg:20px;--shadow-sm:0 2px 8px #0000000d;--shadow-md:0 4px 16px #0000001a;--shadow-lg:0 8px 32px #00000026}[data-theme=dark]{--bg-color:#121212;--surface-color:#1e1e1e;--text-main:#e0e0e0;--text-muted:#a0a0a0;--border-color:#333;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080}*{box-sizing:border-box}input[type=checkbox],input[type=radio]{accent-color:var(--primary-orange)}body{background-color:var(--bg-color);color:var(--text-main);flex-direction:column;min-height:100vh;margin:0;padding:0;font-family:Calisto MT,Georgia,serif;transition:background-color .3s,color .3s;display:flex}main{flex:1;width:100%;max-width:800px;margin:0 auto;padding:2rem 1rem}h1,h2,h3,h4,h5,h6{margin-top:0}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}.btn-primary{background-color:var(--primary-orange);color:#fff;box-shadow:var(--shadow-sm);border-radius:8px;padding:.75rem 1.5rem;font-size:1.1rem;font-weight:700;transition:transform .2s,box-shadow .2s}.btn-primary:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--primary-brown);border:2px solid var(--primary-brown);background-color:#0000;border-radius:8px;padding:.75rem 1.5rem;font-size:1.1rem;font-weight:700;transition:all .2s}[data-theme=dark] .btn-secondary{color:#d2a88a;border-color:#d2a88a}.btn-secondary:hover{background-color:#5c3a211a;transform:translateY(-2px)}.card{background-color:var(--surface-color);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border-color);padding:2rem;transition:transform .3s,box-shadow .3s}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-2{gap:.5rem}.gap-4{gap:1rem}.gap-8{gap:2rem}.text-center{text-align:center}.text-orange{color:var(--primary-orange)}.text-brown{color:var(--primary-brown)}.animate-fade-in{animation:.4s ease-out forwards fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:600px){.card{padding:1.5rem}}.category-grid{grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2rem;display:grid}@media (max-width:800px){.category-grid{grid-template-columns:repeat(2,1fr)}}.pricing-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem;display:grid}@media (max-width:850px){.pricing-grid{grid-template-columns:1fr}}.hover-orange:hover{color:var(--primary-orange)!important}