.grade-converter-wrapper * {
            box-sizing: border-box;
        }
        
        .grade-converter-wrapper {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
        }
        
        .grade-converter-wrapper .main-title {
            color: #0891a1;
            font-weight: 700;
            margin-bottom: 1.5rem;
            font-size: 2rem;
        }
        
        .grade-converter-wrapper .intro-text {
            color: #666;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        
        .grade-converter-wrapper .converter-card {
            background: #fff;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .grade-converter-wrapper .section-header {
            background-color: #c1f2f4;
            color: #0891a1;
            padding: 12px 20px;
            border-radius: 6px;
            margin-bottom: 1.5rem;
            font-weight: 600;
            font-size: 1.25rem;
        }
        
        .grade-converter-wrapper .conversion-box {
            background: #f0fcfd;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            border-left: 4px solid #c1f2f4;
        }
        
        .grade-converter-wrapper .form-label {
            color: #0891a1;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        
        .grade-converter-wrapper .form-control,
        .grade-converter-wrapper .form-select {
            border: 2px solid #c1f2f4;
            border-radius: 4px;
            padding: 0.75rem;
            font-size: 1rem;
        }
        
        .grade-converter-wrapper .form-control:focus,
        .grade-converter-wrapper .form-select:focus {
            border-color: #0891a1;
            box-shadow: 0 0 0 0.2rem rgba(193, 242, 244, 0.5);
        }
        
        .grade-converter-wrapper .btn-primary {
            background-color: #0891a1;
            border-color: #0891a1;
            padding: 12px 40px;
            font-weight: 600;
            border-radius: 6px;
            font-size: 1.1rem;
        }
        
        .grade-converter-wrapper .btn-primary:hover {
            background-color: #067080;
            border-color: #067080;
        }
        
        .grade-converter-wrapper .btn-outline-primary {
            color: #0891a1;
            border-color: #0891a1;
            border-width: 2px;
        }
        
        .grade-converter-wrapper .btn-outline-primary:hover {
            background-color: #0891a1;
            border-color: #0891a1;
            color: white;
        }
        
        .grade-converter-wrapper .result-display {
            background: #c1f2f4;
            border: 3px solid #0891a1;
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            margin-top: 2rem;
        }
        
        .grade-converter-wrapper .result-display h3 {
            color: #0891a1;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        
        .grade-converter-wrapper .result-value {
            font-size: 3.5rem;
            font-weight: 700;
            color: #0891a1;
            margin: 1rem 0;
        }
        
        .grade-converter-wrapper .result-label {
            font-size: 1.25rem;
            color: #0891a1;
            font-weight: 600;
            margin-top: 1rem;
        }
        
        .grade-converter-wrapper .conversion-table {
            background: #fff;
            border: 2px solid #c1f2f4;
            border-radius: 8px;
            overflow: hidden;
            margin-top: 2rem;
        }
        
        .grade-converter-wrapper .conversion-table table {
            width: 100%;
            margin-bottom: 0;
        }
        
        .grade-converter-wrapper .conversion-table th {
            background-color: #c1f2f4;
            color: #0891a1;
            padding: 15px;
            font-weight: 700;
            border: none;
        }
        
        .grade-converter-wrapper .conversion-table td {
            padding: 12px 15px;
            border-bottom: 1px solid #e0e0e0;
            text-align: center;
        }
        
        .grade-converter-wrapper .conversion-table tr:last-child td {
            border-bottom: none;
        }
        
        .grade-converter-wrapper .conversion-table tr:hover {
            background-color: #f0fcfd;
        }
        
        .grade-converter-wrapper .info-card {
            background: #f0fcfd;
            border: 2px solid #c1f2f4;
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
        
        .grade-converter-wrapper .info-card h4 {
            color: #0891a1;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        
        .grade-converter-wrapper .blog-section {
            background: #fff;
            padding: 3rem 0;
            margin-top: 3rem;
            border-top: 3px solid #c1f2f4;
        }
        
        .grade-converter-wrapper .blog-title {
            color: #0891a1;
            font-weight: 700;
            font-size: 2rem;
            margin-bottom: 2rem;
            text-align: center;
        }
        
        .grade-converter-wrapper .blog-content {
            color: #444;
            line-height: 1.9;
            font-size: 1rem;
        }
        
        .grade-converter-wrapper .blog-content h3 {
            color: #0891a1;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }
        
        .grade-converter-wrapper .blog-content h4 {
            color: #0891a1;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
            font-size: 1.25rem;
        }
        
        .grade-converter-wrapper .blog-content p {
            margin-bottom: 1.25rem;
        }
        
        .grade-converter-wrapper .quick-convert-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        
        .grade-converter-wrapper .quick-convert-item {
            background: #c1f2f4;
            padding: 1rem;
            border-radius: 6px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .grade-converter-wrapper .quick-convert-item:hover {
            background: #0891a1;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .grade-converter-wrapper .quick-convert-item .grade {
            font-size: 1.5rem;
            font-weight: 700;
        }
        
        .grade-converter-wrapper .quick-convert-item .value {
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }