:root,[data-theme="dark"]{--primary:#e06a3b;--primary-dark:#b8481c;--success:#2e7d32;--success-bg:#153318;--warning:#e5a93b;--warning-bg:#3a280b;--danger:#c62828;--danger-bg:#3d1313;--bg:#120d0a;--surface:#1a1310;--surface-alt:#241b17;--border:#3b2c26;--text:#f6ede2;--text-muted:#bda698;--text-on-primary:#fff;--svg-bg:#241b17;--svg-text:#ecdcc6;--svg-line:#5c473e;--link:#ff9d73;}[data-theme="light"]{--primary:#b94a16;--primary-dark:#802d08;--success:#2e7d32;--success-bg:#e8f5e9;--warning:#b27a00;--warning-bg:#fff8e1;--danger:#c62828;--danger-bg:#ffebee;--bg:#faf6ee;--surface:#ffffff;--surface-alt:#f3ede0;--border:#dbcfb8;--text:#2a1d17;--text-muted:#736257;--text-on-primary:#fff;--svg-bg:#f3ede0;--svg-text:#2a1d17;--svg-line:#736257;--link:#b94a16;}*{box-sizing:border-box;}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;line-height:1.7;color:var(--text);background:var(--bg);max-width:1020px;margin:0 auto;padding:20px;transition:background 0.3s,color 0.3s;}a{color:var(--link);text-decoration:none;}a:hover{text-decoration:underline;}h1,h2,h3,h4{color:var(--primary);margin-top:1.2em;}h1{font-size:1.6em;}h2{font-size:1.35em;}h3{font-size:1.15em;}code{background:var(--surface-alt);padding:2px 6px;border-radius:4px;font-size:0.92em;color:var(--danger);}.page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:10px;}.theme-toggle{background:var(--surface-alt);border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:6px;cursor:pointer;font-size:14px;transition:0.2s;white-space:nowrap;}.theme-toggle:hover{border-color:var(--primary);}.nav-tabs{display:flex;gap:6px;margin-bottom:20px;border-bottom:2px solid var(--border);padding-bottom:0;flex-wrap:wrap;}.nav-tabs button{padding:10px 18px;cursor:pointer;border:1px solid transparent;border-bottom:none;background:transparent;color:var(--text-muted);border-radius:6px 6px 0 0;font-weight:600;font-size:14px;transition:0.2s;position:relative;bottom:-2px;}.nav-tabs button.active{background:var(--surface);color:var(--primary);border-color:var(--border);border-bottom:2px solid var(--surface);}.nav-tabs button:hover:not(.active){color:var(--text);background:var(--surface-alt);}.tab-content{display:none;background:var(--surface);padding:28px;border:1px solid var(--border);border-top:none;border-radius:0 0 8px 8px;}.tab-content.active{display:block;animation:fadeIn 0.35s;}@keyframes fadeIn{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:translateY(0);}}.sub-tabs{display:flex;gap:8px;margin:15px 0 20px;border-bottom:1px solid var(--border);padding-bottom:0;flex-wrap:wrap;}.sub-tabs button{padding:7px 14px;cursor:pointer;border:none;background:transparent;color:var(--text-muted);font-size:13px;font-weight:600;transition:0.2s;border-bottom:2px solid transparent;position:relative;bottom:-1px;}.sub-tabs button.active{color:var(--primary);border-bottom-color:var(--primary);}.sub-tabs button:hover:not(.active){color:var(--text);}.sub-tab-content{display:none;}.sub-tab-content.active{display:block;animation:fadeIn 0.25s;}details{background:var(--surface-alt);padding:16px 18px;border:1px solid var(--border);margin-bottom:12px;border-radius:6px;border-left:3px solid var(--primary);}summary{font-weight:600;cursor:pointer;color:var(--text);font-size:1em;outline:none;list-style:none;}summary::-webkit-details-marker{display:none;}summary::before{content:'▸ ';color:var(--primary);font-weight:bold;}details[open]summary::before{content:'▾ ';}.answer-content{margin-top:14px;padding-top:14px;border-top:1px dashed var(--border);color:var(--text-muted);line-height:1.8;}.answer-content strong{color:var(--text);}.solution-hidden{display:none;}.btn-reveal{display:inline-block;margin-top:10px;padding:6px 14px;background:var(--primary);color:var(--text-on-primary);border:none;border-radius:4px;cursor:pointer;font-size:13px;font-weight:600;transition:0.2s;}.btn-reveal:hover{background:var(--primary-dark);}.quiz-question{margin-bottom:20px;padding:18px;border:1px solid var(--border);border-radius:6px;background:var(--surface-alt);}.quiz-question h3{margin-top:0;font-size:1em;color:var(--text);}.quiz-option{display:block;margin:8px 0;padding:10px 14px;border-radius:5px;cursor:pointer;background:var(--surface);border:1px solid var(--border);transition:0.15s;color:var(--text);font-size:0.95em;}.quiz-option:hover{border-color:var(--primary);}.quiz-option 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var(--border);padding:18px;border-radius:6px;margin:16px 0;}.interactive-box label{font-weight:600;font-size:0.9em;}.interactive-box input[type="text"],.interactive-box input[type="number"]{background:var(--surface);border:1px solid var(--border);color:var(--text);padding:7px 10px;border-radius:4px;margin:4px 6px 4px 4px;font-size:0.95em;}.svg-container{background:var(--svg-bg);border-radius:6px;padding:16px;text-align:center;margin:14px 0;border:1px solid var(--border);}.svg-container svg{max-width:100%;height:auto;}.cke-badge{display:inline-block;background:var(--danger);color:white;padding:2px 8px;border-radius:3px;font-size:11px;font-weight:700;margin-bottom:8px;letter-spacing:0.02em;}.test-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px;}.test-card{padding:14px;border:1px solid var(--border);border-radius:6px;background:var(--surface-alt);cursor:pointer;transition:0.2s;display:flex;align-items:center;justify-content:space-between;}.test-card:hover{border-color:var(--primary);background:var(--surface);}.test-card .test-name{font-weight:600;font-size:0.95em;}.test-card .test-score{font-size:0.85em;color:var(--text-muted);}.test-card.completed{border-color:var(--success);}.test-card.completed .test-name{color:var(--success);}.test-card.completed .test-score{color:var(--success);}.topo-row{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:20px;}.topo-col{flex:1;min-width:280px;}@media(max-width:600px){body{padding:10px;}.tab-content{padding:16px;}.test-grid{grid-template-columns:1fr;}.nav-tabs button{padding:8px 12px;font-size:13px;}}#page-title{color:#d96b27!important;}#page-title svg{color:#d96b27!important;}.artwork-container{max-width:100%!important;margin:20px auto!important;padding:12px!important;border:none!important;border-radius:0!important;background-color:transparent!important;box-shadow:none!important;box-sizing:border-box!important;display:flex!important;flex-direction:column!important;align-items:center!important;justify-content:center!important;}.artwork-img{max-width:100%!important;height:auto!important;max-height:480px!important;object-fit:contain!important;border-radius:6px!important;border:1px solid rgba(255,255,255,0.08)!important;display:block!important;margin:0 auto!important;box-shadow:0 4px 12px rgba(0,0,0,0.2)!important;}.artwork-caption{margin-top:10px!important;font-size:0.85rem!important;color:var(--text-muted,#a1a1aa)!important;text-align:center!important;line-height:1.4!important;width:100%!important;}.artwork-source-link{display:inline-block!important;margin-top:6px!important;font-size:0.75rem!important;color:var(--link)!important;text-decoration:none!important;opacity:0.85!important;transition:opacity 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var(--border)!important;}.artwork-flex-row{display:flex!important;gap:15px!important;justify-content:center!important;flex-wrap:wrap!important;}.artwork-flex-row .artwork-container{flex:1!important;min-width:180px!important;max-width:280px!important;}h1,h2,h3,h4{color:#d96b27!important;}.dashboard-title{text-align:center;margin-bottom:8px;color:var(--primary)!important;}.dashboard-subtitle{text-align:center;color:var(--text-muted);margin-bottom:30px;font-size:1.05em;max-width:600px;margin-left:auto;margin-right:auto;}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-bottom:40px;}.dashboard-card{background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;padding:24px;transition:0.25s ease;display:flex;flex-direction:column;justify-content:space-between;height:100%;cursor:pointer;text-decoration:none!important;color:inherit;}.dashboard-card:hover{transform:translateY(-4px);border-color:var(--primary);background:var(--surface);box-shadow:0 6px 18px rgba(0,0,0,0.15);}.dashboard-card h3{margin-top:0;color:var(--primary)!important;font-size:1.25em;display:flex;align-items:center;gap:8px;}.dashboard-card p{font-size:0.92em;line-height:1.6;color:var(--text-muted);margin-bottom:18px;flex-grow:1;}.dashboard-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:12px;border-top:1px solid var(--border);}.dashboard-badge{background:var(--surface);border:1px solid var(--border);padding:4px 10px;border-radius:4px;font-size:0.78em;color:var(--text);font-weight:600;}.dashboard-btn{font-size:0.85em;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:4px;transition:0.2s;}.dashboard-card:hover .dashboard-btn{color:var(--primary-dark);transform:translateX(4px);}