@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        
        .header {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 40px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: pulse 4s ease-in-out infinite;
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.1); opacity: 0.8; }
        }
        
        .header h1 {
            font-size: 2.5em;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        
        .header p {
            font-size: 1.2em;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }
        
        .pyramid {
            padding: 40px 30px;
            background: #f8f9fa;
        }
        
        .level {
            margin-bottom: 25px;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .level:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(0,0,0,0.15);
        }
        
        .level-header {
            padding: 20px 30px;
            color: white;
            font-weight: 600;
            font-size: 1.3em;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .level-number {
            background: rgba(255,255,255,0.2);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1em;
        }
        
        .level-content {
            background: white;
            padding: 25px 30px;
        }
        
        .level-description {
            color: #666;
            margin-bottom: 20px;
            font-size: 1.1em;
            line-height: 1.5;
        }
        
        .verbs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 10px;
        }
        
        .verb {
            background: #f8f9fa;
            padding: 12px 16px;
            border-radius: 25px;
            text-align: center;
            font-weight: 500;
            color: #2c3e50;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .verb:hover {
            background: #e9ecef;
            border-color: #3498db;
            transform: translateY(-2px);
        }
        
        /* Level-specific colors */
        .remember .level-header { background: linear-gradient(135deg, #e74c3c, #c0392b); }
        .understand .level-header { background: linear-gradient(135deg, #f39c12, #e67e22); }
        .apply .level-header { background: linear-gradient(135deg, #f1c40f, #f39c12); }
        .analyze .level-header { background: linear-gradient(135deg, #2ecc71, #27ae60); }
        .evaluate .level-header { background: linear-gradient(135deg, #3498db, #2980b9); }
        .create .level-header { background: linear-gradient(135deg, #9b59b6, #8e44ad); }
        
        .remember .verb:hover { border-color: #e74c3c; }
        .understand .verb:hover { border-color: #f39c12; }
        .apply .verb:hover { border-color: #f1c40f; }
        .analyze .verb:hover { border-color: #2ecc71; }
        .evaluate .verb:hover { border-color: #3498db; }
        .create .verb:hover { border-color: #9b59b6; }
        
        .footer {
            background: #2c3e50;
            color: white;
            padding: 30px;
            text-align: center;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 20px;
        }
        
        .footer-section h3 {
            margin-bottom: 15px;
            color: #3498db;
        }
        
        .footer-section p {
            opacity: 0.9;
            line-height: 1.6;
        }
        
        .copyright {
            border-top: 1px solid #34495e;
            padding-top: 20px;
            opacity: 0.7;
        }
        
        @media (max-width: 768px) {
            .header h1 { font-size: 2em; }
            .header p { font-size: 1em; }
            .pyramid { padding: 20px 15px; }
            .level-header { font-size: 1.1em; padding: 15px 20px; }
            .level-content { padding: 20px; }
            .verbs-grid { grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); }
        }