* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            min-height: 100vh;
            color: #333;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        header {
            background: rgba(255, 255, 255, 0.98);
            border-radius: 16px;
            padding: 20px 30px;
            margin-bottom: 20px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
        }

        h1 {
            font-size: 28px;
            background: linear-gradient(135deg, #f093fb, #f5576c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

        .subtitle {
            color: #666;
            font-size: 14px;
        }

        .main-content {
            background: rgba(255, 255, 255, 0.98);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
        }

        .pedagogy-badge {
            display: inline-block;
            padding: 8px 16px;
            background: linear-gradient(135deg, #f093fb, #f5576c);
            color: white;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 20px;
        }

        .description {
            background: linear-gradient(135deg, #f093fb15, #f5576c15);
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 25px;
            border-left: 4px solid #f093fb;
        }

        .phase-container {
            margin-bottom: 30px;
        }

        .phase-header {
            background: linear-gradient(135deg, #f093fb, #f5576c);
            color: white;
            padding: 15px 20px;
            border-radius: 10px;
            margin-bottom: 15px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .phase-number {
            background: rgba(255, 255, 255, 0.3);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .phase-content {
            background: #f8fafc;
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #f093fb;
        }

        .problem-box {
            background: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 15px;
            border: 2px solid #f093fb;
        }

        .problem-title {
            font-weight: 600;
            color: #f5576c;
            margin-bottom: 10px;
            font-size: 14px;
        }

        .problem-text {
            line-height: 1.7;
            color: #2c3e50;
        }

        .attempt {
            background: white;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            border-left: 4px solid #dc2626;
        }

        .attempt-header {
            font-weight: 600;
            color: #dc2626;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .attempt-outcome {
            display: inline-block;
            background: #dc262620;
            color: #dc2626;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            margin-left: 8px;
        }

        .insight-box {
            background: linear-gradient(135deg, #10b98110, #05966910);
            padding: 12px;
            border-radius: 8px;
            margin-top: 10px;
            border-left: 3px solid #10b981;
        }

        .insight-label {
            font-weight: 600;
            color: #10b981;
            font-size: 12px;
            margin-bottom: 5px;
        }

        .consolidation-box {
            background: linear-gradient(135deg, #667eea10, #764ba210);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #667eea;
        }

        .consolidation-title {
            font-weight: 600;
            color: #667eea;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .key-concepts {
            margin-top: 20px;
        }

        .key-concepts h4 {
            color: #f5576c;
            margin-bottom: 10px;
            font-size: 14px;
        }

        .key-concepts ul {
            list-style: none;
            padding: 0;
        }

        .key-concepts li {
            padding: 8px 0;
            color: #444;
            font-size: 14px;
            line-height: 1.6;
        }

        .key-concepts li::before {
            content: "→";
            color: #f5576c;
            font-weight: bold;
            margin-right: 10px;
        }

        .action-bar {
            display: flex;
            gap: 15px;
            justify-content: center;
            padding: 20px 0;
            border-top: 1px solid #e0e0e0;
            margin-top: 20px;
        }

        .action-btn {
            padding: 12px 30px;
            border: none;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 14px;
        }

        .nav-btn {
            background: white;
            color: #f093fb;
            border: 2px solid #f093fb;
        }

        .nav-btn:hover {
            background: #f093fb;
            color: white;
            transform: translateY(-2px);
        }

        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 20px;
        }

        .stat-item {
            background: white;
            padding: 15px;
            border-radius: 10px;
            border-left: 4px solid #f093fb;
        }

        .stat-label {
            font-size: 12px;
            color: #666;
            text-transform: uppercase;
            margin-bottom: 5px;
        }

        .stat-value {
            font-size: 20px;
            font-weight: 600;
            color: #f5576c;
        }