/* ===== 全局重置 & 1480px 容器 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.5;
            color: #1e293b;
            background-color: #fafbfc;
        }

        .container-1480 {
            max-width: 1480px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        /* ===== 工业风 Banner 优化 ===== */
        .hero-banner {
            position: relative;
            width: 100%;
            aspect-ratio: 1920 / 700;
            background-image: linear-gradient(90deg, rgba(0,20,40,0.85) 0%, rgba(0,40,70,0.65) 50%, rgba(0,60,100,0.4) 100%), 
                              url('/Uploads/64b24740e6a68.jpg?auto=format&fit=crop&q=85&w=1920');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            color: white;
            overflow: hidden;
        }

        .banner-content {
            max-width: 1480px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
            animation: fadeInUp 1s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .banner-content h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .banner-content p {
            font-size: clamp(1rem, 1.5vw, 1.2rem);
            max-width: 650px;
            line-height: 1.6;
            margin-bottom: 2rem;
            color: rgba(255,255,255,0.95);
            text-shadow: 0 1px 2px rgba(0,0,0,0.2);
        }

        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: white;
            padding: 16px 36px;
            text-decoration: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            box-shadow: 0 10px 20px -5px rgba(37,99,235,0.3);
        }

        .cta-button:hover {
            background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
            transform: translateY(-2px);
            box-shadow: 0 15px 25px -5px rgba(37,99,235,0.4);
        }

        /* ===== 产品网格 ===== */
        .main-content {
            padding: 60px 0;
            background: #fafbfc;
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);  /* 电脑端默认一行四个 */
            gap: 30px;
            margin: 40px 0;
        }

        .product-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 30px -10px rgba(37,99,235,0.15);
            border-color: rgba(37,99,235,0.1);
        }

        .card-img-wrap {
            aspect-ratio: 1;
            overflow: hidden;
            background: #f8fafc;
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .product-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .card-info {
            padding: 24px 20px 20px;
            text-align: center;
        }

        .product-name {
            font-size: 1.2rem;
            font-weight: 600;
            color: #0f172a;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .btn-view {
            display: inline-block;
            background: #f1f5f9;
            color: #2563eb;
            padding: 8px 24px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .product-card:hover .btn-view {
            background: #2563eb;
            color: white;
        }

        /* ===== 分类介绍区域 ===== */
        .category-intro {
            background: white;
            padding: 35px 40px;
            border-radius: 24px;
            margin: 30px 0;
            box-shadow: 0 5px 20px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.03);
            font-size: 1.05rem;
            color: #334155;
            line-height: 1.7;
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            margin: 50px 0 20px;
            text-align: center;
        }

        .fenye {
            display: inline-flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .fenye a, .fenye span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 44px;
            padding: 0 12px;
            background: white;
            border: 1px solid #e2e8f0;
            color: #334155;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.2s;
        }

        .fenye a:hover {
            background: #f1f5f9;
            border-color: #2563eb;
            color: #2563eb;
        }

        .fenye .current {
            background: #2563eb;
            border-color: #2563eb;
            color: white;
        }

        /* ===== 询盘表单区域 ===== */
        .inquiry-section {
            background: linear-gradient(135deg, #0b1e33 0%, #102a44 100%);
            padding: 70px 0;
            color: white;
        }

        .inquiry-container {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(10px);
            border-radius: 32px;
            padding: 50px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .inquiry-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .inquiry-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: white;
        }

        .inquiry-header p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .form-full {
            grid-column: span 2;
        }

        .form-input, .form-textarea {
            width: 100%;
            padding: 16px 20px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: 12px;
            font-size: 1rem;
            color: white;
            transition: all 0.3s;
        }

        .form-input::placeholder, .form-textarea::placeholder {
            color: rgba(255,255,255,0.6);
        }

        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: #2563eb;
            background: rgba(255,255,255,0.12);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.2);
        }

        .btn-submit-main {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: white;
            padding: 16px 48px;
            border: none;
            border-radius: 40px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid transparent;
        }

        .btn-submit-main:hover {
            background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(37,99,235,0.4);
        }

        /* ===== 响应式布局 ===== */
        /* 大屏默认四列，由上面定义 */

        /* 当屏幕宽度 ≤ 1200px 时，改为三列 */
        @media (max-width: 1200px) {
            .product-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* 当屏幕宽度 ≤ 992px 时，改为两列 */
        @media (max-width: 992px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        /* 移动端优化（≤767px）保持两列，并调整卡片内边距 */
        @media (max-width: 767px) {
            .container-1480 {
                padding: 0 20px;
            }

            .hero-banner {
                aspect-ratio: 16 / 9;
                min-height: 280px;
                background-image: url('https://<{$host}>/Uploads/<?php echo $value['photo'];?>?auto=format&fit=crop&q=85&w=1920');
            }

            .banner-content {
                display: none !important;
            }

            .product-grid {
                grid-template-columns: repeat(2, 1fr);  /* 确保手机端也是两列 */
                gap: 15px;
                margin: 30px 0;
            }

            .card-info {
                padding: 16px 12px 12px;
            }

            .product-name {
                font-size: 1rem;
                margin-bottom: 8px;
            }

            .btn-view {
                padding: 6px 16px;
                font-size: 0.85rem;
            }

            .category-intro {
                padding: 25px 20px;
                font-size: 0.95rem;
            }

            .inquiry-container {
                padding: 30px 20px;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-full {
                grid-column: span 1;
            }

            .inquiry-header h2 {
                font-size: 1.8rem;
            }

            .btn-submit-main {
                width: 100%;
                padding: 16px 20px;
            }
        }

        /* 超小屏（如宽度 400px 以下）进一步微调，保持两列 */
        @media (max-width: 400px) {
            .product-grid {
                gap: 10px;
            }
            .card-info {
                padding: 12px 8px 8px;
            }
            .product-name {
                font-size: 0.9rem;
            }
            .btn-view {
                padding: 4px 12px;
                font-size: 0.75rem;
            }
        }