/* 全局样式 */
        :root {
            --primary-color: #2563eb;
            --secondary-color: #f87171;
            --neutral-color: #f3f4f6;
            --text-color: #1f2937;
            --text-light: #6b7280;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f9fafb;
        }

        section {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 卡片样式 */
        .card {
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            margin-bottom: 24px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }

        .card-header {
            padding: 20px 24px;
            border-bottom: 1px solid #e5e7eb;
            background-color: #f8fafc;
        }

        .card-header h2 {
            color: var(--primary-color);
            font-size: 24px;
            font-weight: 600;
            margin: 0;
            border: none;
            padding: 0;
        }

        .card-body {
            padding: 24px;
        }

        /* 产品详情表格 */
        .product-table {
            width: 100%;
            border-collapse: collapse;
        }

        .product-table th,
        .product-table td {
            padding: 16px;
            border-bottom: 1px solid #e5e7eb;
            text-align: left;
        }

        .product-table th {
            background-color: #f8fafc;
            color: var(--primary-color);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .product-table tr:last-child td {
            border-bottom: none;
        }

        .product-table tr:nth-child(even) {
            background-color: #f9fafb;
        }

        .product-table tr:hover {
            background-color: #f3f4f6;
            transition: background-color 0.2s ease;
        }

        /* FAQ折叠面板 */
        .faq-item {
            margin-bottom: 16px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
        }

        .faq-question {
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            background-color: #f8fafc;
            color: var(--text-color);
            font-weight: 500;
            transition: background-color 0.2s ease;
        }

        .faq-question:hover {
            background-color: #f3f4f6;
        }

        .faq-question i {
            color: var(--secondary-color);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            background-color: white;
            color: var(--text-light);
            transition: max-height 0.5s ease, padding 0.5s ease;
        }

        .faq-answer p {
            padding: 16px 20px;
            margin: 0;
        }

        .faq-question.active {
            background-color: var(--primary-color);
            color: white;
        }

        .faq-question.active i {
            transform: rotate(180deg);
            color: white;
        }

        .faq-question.active + .faq-answer {
            max-height: 500px;
        }

        /* 物流政策说明 */
        .shipping-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .shipping-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .shipping-card {
            display: flex;
            flex-direction: column;
            padding: 20px;
            border-radius: 10px;
            background-color: #f8fafc;
            transition: all 0.3s ease;
            border-left: 4px solid var(--primary-color);
        }

        .shipping-card:hover {
            background-color: #f1f5f9;
            transform: translateY(-2px);
        }

        .shipping-card i {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 12px;
        }

        .shipping-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-color);
        }

        .shipping-card p {
            color: var(--text-light);
            margin: 0;
        }