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

        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background-color: #f8fafc;
            color: #1e293b;
            line-height: 1.5;
            padding: 40px 20px;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #0f172a;
            margin-bottom: 0.3rem;
        }

        .section-header p {
            font-size: 1.05rem;
            color: #475569;
        }

        /* 默认桌面：3列 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .product-card {
            background: #ffffff;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            transition: box-shadow 0.25s ease, transform 0.2s ease;
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.12);
            transform: translateY(-4px);
        }

        .product-card .img-wrapper {
            width: 100%;
            height: 200px;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 12px;
        }

        .product-card .img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            display: block;
        }

        .product-card .card-body {
            padding: 16px 18px 20px;
            text-align: center;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .product-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 2px;
        }

        .view-more-wrapper {
            text-align: center;
            margin-top: 10px;
        }

        .btn-view-more {
            display: inline-block;
            background: #0f172a;
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 14px 48px;
            border-radius: 60px;
            text-decoration: none;
            transition: background 0.2s, transform 0.15s;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
            letter-spacing: 0.3px;
        }

        .btn-view-more:hover {
            background: #1e293b;
            transform: translateY(-2px);
        }

        /* 平板：2列 */
        @media (max-width: 900px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .section-header h2 {
                font-size: 2rem;
            }
            .product-card .img-wrapper {
                height: 180px;
            }
        }

        /* 移动端：3列（用户要求） */
        @media (max-width: 600px) {
            body {
                padding: 20px 12px;
            }
            .product-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;          /* 间距缩小 */
            }
            .product-card {
                border-radius: 14px;
            }
            .product-card .img-wrapper {
                height: 100px;       /* 图片高度减小，适应三列 */
                padding: 6px;
            }
            .product-card .card-body {
                padding: 10px 6px 12px;
            }
            .product-card .card-body h3 {
                font-size: 0.85rem;  /* 字体缩小 */
                font-weight: 600;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header p {
                font-size: 0.85rem;
            }
            .btn-view-more {
                font-size: 0.95rem;
                padding: 10px 28px;
            }
        }

        /* 超小屏（< 400px）仍保持三列，但进一步微调 */
        @media (max-width: 400px) {
            .product-card .img-wrapper {
                height: 80px;
                padding: 4px;
            }
            .product-card .card-body h3 {
                font-size: 0.75rem;
            }
            .product-grid {
                gap: 8px;
            }
        }