/* 首页：页面标题和描述 */
.page-header {
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 600;
    color: #1f2937;
    margin: 0 0 12px 0;
    line-height: 1.4;
}

.page-header p {
    font-size: 16px;
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}

/* 测试列表样式 */
.tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.test-card {
    background: white;
    border: none;
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
    color: inherit;
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    height: 100%;
}

.test-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
}

.test-card h4 {
    color: #1f2937;
    margin-bottom: 16px;
    font-size: 1.375rem;
    font-weight: 700;
    line-height: 1.4;
    min-height: 3.85rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.test-card p {
    color: #6b7280;
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 15px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.test-card .meta {
    color: #999;
    font-size: 0.85em;
    margin-top: 10px;
    margin-bottom: 15px;
}

.test-card .version-comparison {
    background: linear-gradient(135deg, #f8f9fa 0%, #f1f5f9 100%);
    border-radius: 12px;
    padding: 16px;
    margin: 20px 0;
    font-size: 14px;
}

.test-card .version-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 4px 0;
}

.test-card .version-item:last-child {
    margin-bottom: 0;
}

.test-card .version-label {
    color: #6b7280;
    font-weight: 500;
    min-width: 60px;
}

.test-card .version-meta {
    color: #374151;
    flex: 1;
    text-align: right;
    margin-right: 8px;
}

.test-card .version-btn {
    position: relative;
}

.test-card .version-btn .price-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    font-size: 10px;
    font-weight: 500;
    padding: 3px 6px;
    border-radius: 10px;
    line-height: 1.2;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
    z-index: 10;
    pointer-events: none;
}

.test-card .version-btn.professional .price-badge {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.test-card .version-btn.trial .price-badge {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.test-card .version-buttons {
    display: flex;
    gap: 8px;
    margin-top: auto;
    flex-wrap: nowrap;
    width: 100%;
    align-items: stretch;
}

.test-card .version-btn {
    flex: 1;
    padding: 10px 8px;
    border: none;
    border-radius: 8px;
    background: #ffffff;
    color: #374151;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    position: relative;
    min-height: 40px;
    box-sizing: border-box;
}

.test-card .version-btn:hover {
    background: #f8f9fa;
    color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.test-card .version-btn.trial {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: #2563eb;
}

.test-card .version-btn.standard {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #d97706;
}

.test-card .version-btn.professional {
    background: linear-gradient(135deg, #f3e8ff 0%, #e9d5ff 100%);
    color: #7c3aed;
}

.test-card .version-btn.locked {
    background: #f9fafb;
    border-color: #e5e7eb;
    color: #9ca3af;
    cursor: not-allowed;
    position: relative;
}

.test-card .version-btn.locked::after {
    content: '🔒';
    margin-left: 4px;
}

.loading {
    text-align: center;
    color: #666;
    padding: 40px;
    font-size: 1.2em;
}

.hidden {
    display: none;
}

@media (max-width: 768px) {
    .tests-grid {
        grid-template-columns: 1fr;
    }
}