/* ========== 产品详情页专用样式 (增强与class.css融合) ========== */
        /* 面包屑 */
        .breadcrumb-wrapper {
            background: var(--primary-light);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-soft);
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            vertical-align: middle;
        }
        .breadcrumb .current {
            color: var(--text-dark);
            font-weight: 500;
        }

        /* 产品详情主区域 */
        .product-detail-section {
            padding: 2rem 0 3rem;
        }
        .product-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: start;
        }
        /* 左列 图片区域 */
        .product-gallery {
            position: relative;
            background: var(--secondary);
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }
        .main-image-container {
            position: relative;
            aspect-ratio: 1 / 1;
            background: #f2f4f8;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: zoom-in;
        }
        .main-image {
            width: 100%;
            height: 100%;
            object-fit: contain;
            transition: transform 0.2s;
        }
        /* 左右箭头 */
        .gallery-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(0,0,0,0.5);
            backdrop-filter: blur(4px);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            z-index: 5;
            color: white;
            border: none;
        }
        .gallery-arrow:hover {
            background: var(--accent);
            color: white;
        }
        .gallery-arrow-left {
            left: 12px;
        }
        .gallery-arrow-right {
            right: 12px;
        }
        .gallery-arrow svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }
        /* 图片计数 + 爱心 */
        .image-counter {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(0,0,0,0.65);
            backdrop-filter: blur(4px);
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            color: white;
            z-index: 5;
            letter-spacing: 0.5px;
        }
        .wishlist-icon {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255,255,255,0.9);
            backdrop-filter: blur(4px);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 6;
            transition: all 0.2s;
            border: 1px solid var(--border-light);
            color: #888;
        }
        .wishlist-icon svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            transition: fill 0.2s;
        }
        .wishlist-icon.active {
            background: var(--accent);
            color: white;
            border-color: var(--accent);
        }
        .wishlist-icon.active svg {
            fill: white;
            stroke: white;
        }

        /* 右侧信息区 */
        .product-info {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .product-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin: 0;
        }
        .product-price-row {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            background: var(--primary-light);
            display: inline-block;
            padding: 0.2rem 1rem;
            border-radius: 60px;
            width: fit-content;
        }
        .price-request {
            font-size: 1.2rem;
            font-weight: 600;
            background: var(--border-light);
            padding: 0.2rem 1rem;
            border-radius: 60px;
            color: var(--text-soft);
        }
        .specs-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 0.5rem 0;
            background: var(--primary-light);
            padding: 1.2rem;
            border-radius: 24px;
        }
        .specs-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .spec-item {
            display: flex;
            align-items: baseline;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.95rem;
        }
        .spec-label {
            font-weight: 700;
            min-width: 90px;
            color: var(--primary);
        }
        .spec-value {
            color: var(--text-dark);
        }
        .action-buttons {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .btn-action {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 18px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid transparent;
            width: 100%;
            background: white;
            border-color: var(--border-light);
        }
        .btn-action svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }
        .btn-compare-detail {
            background: var(--primary-light);
            color: var(--primary);
        }
        .btn-compare-detail.active {
            background: var(--accent);
            color: white;
            border-color: var(--accent);
        }
        .btn-whatsapp {
            background: #25D366;
            color: white;
            border-color: #25D366;
        }
        .btn-whatsapp:hover {
            background: #128C7E;
        }
        .btn-getquote {
            background: var(--primary);
            color: white;
        }
        .btn-getquote:hover {
            background: var(--accent);
        }

        /* lightbox 悬浮放大模态框 */
        .lightbox-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.9);
            z-index: 10000;
            display: none;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(8px);
        }
        .lightbox-content {
            position: relative;
            max-width: 90vw;
            max-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .lightbox-image {
            max-width: 90vw;
            max-height: 85vh;
            object-fit: contain;
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
        }
        .lightbox-close {
            position: absolute;
            top: 20px;
            right: 30px;
            background: rgba(0,0,0,0.6);
            border-radius: 50%;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: white;
            font-size: 2rem;
            transition: 0.2s;
        }
        .lightbox-close:hover {
            background: var(--accent);
        }
        .lightbox-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(0,0,0,0.6);
            border-radius: 50%;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: white;
            transition: 0.2s;
        }
        .lightbox-arrow:hover {
            background: var(--accent);
        }
        .lightbox-prev {
            left: 20px;
        }
        .lightbox-next {
            right: 20px;
        }
        .lightbox-counter {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0,0,0,0.7);
            padding: 6px 16px;
            border-radius: 40px;
            color: white;
            font-size: 0.9rem;
        }

        /* 移动端响应式 */
        @media (max-width: 992px) {
            .product-detail-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .product-title {
                font-size: 1.8rem;
            }
            .specs-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .action-buttons {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .btn-action {
                flex: 1;
                min-width: 140px;
            }
        }
        @media (max-width: 640px) {
            .product-detail-section {
                padding: 1.2rem 0;
            }
            .gallery-arrow {
                width: 32px;
                height: 32px;
            }
            .wishlist-icon {
                width: 38px;
                height: 38px;
                top: 12px;
                right: 12px;
            }
            .image-counter {
                bottom: 12px;
                right: 12px;
                font-size: 0.7rem;
            }
            .btn-action {
                font-size: 0.85rem;
                padding: 10px 12px;
            }
        }
/* Description 区域样式 */
.description-section {
    background: var(--primary-light);
    border-radius: 24px;
    padding: 1.2rem 1.5rem;
    border: 1px solid var(--border-light);
    transition: background 0.2s ease;
}

.description-content {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

.description-content p {
    margin-bottom: 0.75rem;
}

.description-content strong {
    color: var(--primary);
    font-weight: 700;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .description-section {
        padding: 1rem 1.2rem;
        margin-top: 1.5rem;
    }
    .description-content {
        font-size: 0.9rem;
    }
}
        /* 产品细节图区域 */
        .product-detail-gallery-section {
            padding: 3rem 0 2rem;
            background: var(--secondary);
            border-top: 1px solid var(--border-light);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .detail-gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
            margin-top: 1rem;
        }
        .detail-gallery-item {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            cursor: pointer;
            aspect-ratio: 1 / 1;
            background: var(--primary-light);
            border: 1px solid var(--border-light);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .detail-gallery-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.1);
        }
        .detail-gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .detail-gallery-item:hover img {
            transform: scale(1.02);
        }
        /* 移动端细节图适配 */
        @media (max-width: 768px) {
            .detail-gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .detail-gallery-grid {
                grid-template-columns: repeat(1, 1fr);
            }
        }

        /* 二手设备采购清单登记表区域 */
        .inquiry-request-section {
            padding: 3rem 0 3rem;
            background: var(--primary-light);
            margin-top: 1rem;
        }
        .request-card {
            background: var(--secondary);
            border-radius: 32px;
            padding: 2rem 2rem 2rem;
            box-shadow: 0 8px 24px rgba(0,0,0,0.05);
            border: 1px solid var(--border-light);
        }
        .request-card .section-title {
            margin-bottom: 0.5rem;
        }
        .request-sub {
            color: var(--text-soft);
            font-size: 0.9rem;
            margin-bottom: 1.8rem;
            border-left: 3px solid var(--accent);
            padding-left: 1rem;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .form-field {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-field.full-width {
            grid-column: span 2;
        }
        .form-field label {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .form-field label svg {
            width: 18px;
            height: 18px;
            stroke: var(--accent);
            fill: none;
        }
        .form-field input, 
        .form-field select, 
        .form-field textarea {
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            border-radius: 60px;
            font-size: 0.95rem;
            background: var(--secondary);
            color: var(--text-dark);
            outline: none;
            transition: all 0.2s;
        }
        .form-field input:focus, 
        .form-field select:focus, 
        .form-field textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255,102,0,0.1);
        }
        .form-field textarea {
            border-radius: 24px;
            resize: vertical;
        }
        .hint-text {
            font-size: 0.7rem;
            color: var(--text-soft);
            opacity: 0.8;
            margin-top: 0.2rem;
        }
        .radio-group {
            display: flex;
            gap: 1.5rem;
            align-items: center;
            flex-wrap: wrap;
            background: var(--primary-light);
            padding: 8px 16px;
            border-radius: 60px;
        }
        .radio-group label {
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            cursor: pointer;
        }
        .radio-group input {
            width: 18px;
            height: 18px;
            accent-color: #d9534f;
        }
        .submit-request-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            width: 100%;
            margin-top: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .submit-request-btn:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .form-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .form-field.full-width {
                grid-column: span 1;
            }
            .request-card {
                padding: 1.5rem;
            }
            .radio-group {
                justify-content: space-between;
            }
        }
        /* catalog pdf 按钮样式统一 */
        .btn-pdf {
            background: #d9534f;
            color: white;
            border-color: #d9534f;
        }
        .btn-pdf:hover {
            background: #c9302c;
        }
        /* 活动产品推荐区域 专用样式 (融入主风格) */
        .active-products-section {
            padding: 3rem 0 4rem;
            background: var(--secondary);
            border-top: 1px solid var(--border-light);
        }
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            margin-bottom: 1.8rem;
        }
        .section-header .section-title {
            margin-bottom: 0;
        }
        .section-header .section-title:after {
            width: 100%;
        }
        .carousel-controls {
            display: flex;
            gap: 12px;
        }
        .carousel-btn {
            width: 44px;
            height: 44px;
            border-radius: 60px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid var(--border-light);
            color: var(--primary);
        }
        .carousel-btn:hover {
            background: var(--accent);
            color: white;
            border-color: var(--accent);
        }
        .carousel-btn svg {
            width: 24px;
            height: 24px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
        }
        .product-carousel {
            position: relative;
            overflow: hidden;
            border-radius: 28px;
        }
        .carousel-track {
            display: flex;
            overflow-x: auto;
            scroll-behavior: smooth;
            scroll-snap-type: x mandatory;
            gap: 1.5rem;
            padding: 0.5rem 0 1rem;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
        }
        .carousel-track::-webkit-scrollbar {
            height: 6px;
        }
        .carousel-track::-webkit-scrollbar-track {
            background: var(--primary-light);
            border-radius: 10px;
        }
        .carousel-track::-webkit-scrollbar-thumb {
            background: var(--accent);
            border-radius: 10px;
        }
        .active-product-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: var(--secondary);
            border-radius: 28px;
            border: 1px solid var(--border-light);
            padding: 1rem 1rem 1.2rem;
            transition: transform 0.2s, box-shadow 0.2s;
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }
        .active-product-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 30px rgba(0,0,0,0.08);
        }
        /* 图片区域 + 爱心右上角 */
        .card-img-wrapper {
            position: relative;
            width: 100%;
            aspect-ratio: 1 / 1;
            border-radius: 20px;
            overflow: hidden;
            background: #f2f4f8;
            margin-bottom: 1rem;
        }
        .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .card-wishlist-icon {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(255,255,255,0.9);
            backdrop-filter: blur(4px);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid var(--border-light);
            color: #888;
            z-index: 5;
        }
        .card-wishlist-icon svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }
        .card-wishlist-icon.active {
            background: var(--accent);
            color: white;
            border-color: var(--accent);
        }
        .card-wishlist-icon.active svg {
            fill: white;
            stroke: white;
        }
        /* 产品信息区域 */
        .product-card-title {
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0.25rem 0 0.5rem;
            color: var(--primary);
            line-height: 1.3;
        }
        .product-specs-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.7rem;
            color: var(--text-soft);
            margin-bottom: 0.6rem;
            background: var(--primary-light);
            padding: 6px 10px;
            border-radius: 40px;
        }
        .product-specs-row span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .brand-stock {
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            margin: 0.3rem 0;
            color: var(--text-soft);
            font-weight: 500;
        }
        .stock {
            color: #2e7d32;
            background: #e8f5e9;
            padding: 2px 8px;
            border-radius: 30px;
        }
        .price-block {
            display: flex;
            align-items: baseline;
            gap: 8px;
            flex-wrap: wrap;
            margin: 0.5rem 0 0.2rem;
        }
        .active-price {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
        }
        .old-price {
            font-size: 0.85rem;
            text-decoration: line-through;
            color: var(--text-soft);
        }
        .countdown-timer {
            background: #fff0e0;
            border-radius: 40px;
            padding: 6px 12px;
            font-size: 0.75rem;
            font-weight: 700;
            text-align: center;
            margin: 0.5rem 0;
            color: #c7522a;
            display: inline-block;
            width: 100%;
            font-family: monospace;
            letter-spacing: 1px;
        }
        .card-actions {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .btn-compare-small {
            flex: 1;
            background: var(--primary-light);
            border: none;
            border-radius: 60px;
            padding: 8px 0;
            font-weight: 600;
            font-size: 0.8rem;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            color: var(--primary);
        }
        .btn-compare-small.active {
            background: var(--accent);
            color: white;
        }
        .btn-compare-small svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: currentColor;
        }
        /* 移动端卡片宽度适配 */
        @media (max-width: 640px) {
            .active-product-card {
                flex: 0 0 260px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .carousel-controls {
                align-self: flex-end;
            }
        }
        @media (max-width: 480px) {
            .active-product-card {
                flex: 0 0 85vw;
            }
        }