.top-header {
            position: sticky;
            top: 0;
            background: linear-gradient(135deg, #e60012 0%, #b3000d 100%);
            color: white;
            padding: 12px 15px;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .header-title {
            font-size: 18px;
            font-weight: 700;
        }

        .header-actions {
            display: flex;
            gap: 15px;
        }

        .header-actions i {
            font-size: 18px;
        }

        .edit-btn {
            background: rgba(255, 255, 255, 0.2);
            padding: 5px 12px;
            border-radius: 15px;
            font-size: 13px;
        }

        /* 购物车状态 */
        .cart-status {
            background: white;
            padding: 15px;
            display: flex;
            align-items: center;
            margin-bottom: 8px;
        }

        .status-icon {
            width: 40px;
            height: 40px;
            background: #fef2e8;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 18px;
            color: #ff9500;
        }

        .status-text {
            flex: 1;
        }

        .status-text h3 {
            font-size: 16px;
            margin-bottom: 5px;
        }

        .status-text p {
            color: #666;
            font-size: 13px;
        }

        /* 购物车商品 */
        .cart-section {
            background: white;
            margin-bottom: 8px;
            padding: 0 15px;
        }

        .section-header {
            padding: 15px 0;
            display: flex;
            align-items: center;
            border-bottom: 1px solid #f0f0f0;
        }

        .section-title {
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
        }

        .section-title i {
            color: #e60012;
            margin-right: 8px;
        }

        /* 购物车商品项 */
        .cart-item {
            display: flex;
            padding: 15px 0;
            border-bottom: 1px solid #f0f0f0;
            position: relative;
        }

        .item-select {
            width: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .checkbox {
            width: 20px;
            height: 20px;
            border: 1px solid #ddd;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .checkbox.selected {
            background: #e60012;
            border-color: #e60012;
        }

        .checkbox.selected::after {
            content: "";
            display: block;
            width: 6px;
            height: 10px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
            margin-top: -2px;
        }

        .item-image {
            width: 90px;
            height: 90px;
            border-radius: 8px;
            overflow: hidden;
            margin-right: 12px;
            background: #f8f8f8;
        }

        .item-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .item-details {
            flex: 1;
        }

        .item-title {
            font-size: 15px;
            margin-bottom: 5px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }

        .item-spec {
            color: #999;
            font-size: 13px;
            margin-bottom: 8px;
        }

        .item-price {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .price {
            color: #e60012;
            font-weight: 700;
            font-size: 16px;
        }

        .original-price {
            color: #999;
            font-size: 13px;
            text-decoration: line-through;
            margin-left: 5px;
        }

        .quantity-control {
            display: flex;
            align-items: center;
            border: 1px solid #eee;
            border-radius: 15px;
            overflow: hidden;
        }

        .quantity-btn {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f8f8f8;
            font-size: 16px;
        }

        .quantity-value {
            width: 40px;
            text-align: center;
            font-size: 15px;
        }

        .item-delete {
            position: absolute;
            right: 0;
            top: 15px;
            color: #999;
            font-size: 18px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 优惠券 */
        .coupon-section {
            background: white;
            padding: 15px;
            margin-bottom: 8px;
        }

        .coupon-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .coupon-list {
            display: flex;
            gap: 12px;
            overflow-x: auto;
            padding-bottom: 5px;
        }

        .coupon-item {
            min-width: 240px;
            height: 80px;
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .coupon-left {
            width: 30%;
            background: linear-gradient(135deg, #e60012 0%, #b3000d 100%);
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px;
        }

        .coupon-amount {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.2;
        }

        .coupon-condition {
            font-size: 11px;
        }

        .coupon-right {
            flex: 1;
            background: white;
            padding: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .coupon-title {
            font-weight: 500;
            font-size: 15px;
            margin-bottom: 5px;
        }

        .coupon-desc {
            color: #999;
            font-size: 12px;
            margin-bottom: 8px;
        }

        .coupon-time {
            color: #999;
            font-size: 11px;
        }

        .coupon-btn {
            color: #e60012;
            font-size: 13px;
            font-weight: 500;
        }

        /* 价格汇总 */
        .summary-section {
            background: white;
            padding: 15px;
            margin-bottom: 8px;
        }

        .summary-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 12px;
        }

        .summary-row:last-child {
            margin-bottom: 0;
        }

        .summary-label {
            color: #666;
        }

        .summary-value {
            font-weight: 500;
        }

        .total-row {
            border-top: 1px dashed #eee;
            padding-top: 15px;
            margin-top: 10px;
        }

        .total-price {
            color: #e60012;
            font-size: 20px;
            font-weight: 700;
        }

        .saving {
            color: #e60012;
            font-size: 13px;
            text-align: right;
            margin-top: 5px;
        }

        /* 底部操作栏 */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: white;
            z-index: 100;
            border-top: 1px solid #eee;
            padding: 15px;
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
        }

        .select-all {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .select-all .checkbox {
            margin-right: 10px;
        }

        .action-buttons {
            display: flex;
            gap: 15px;
        }

        .action-btn {
            flex: 1;
            padding: 14px 0;
            text-align: center;
            border-radius: 25px;
            font-weight: 500;
            font-size: 16px;
        }

        .delete-btn {
            background: #f8f8f8;
            color: #666;
        }

        .checkout-btn {
            background: linear-gradient(135deg, #e60012 0%, #b3000d 100%);
            color: white;
            box-shadow: 0 4px 10px rgba(230, 0, 18, 0.3);
        }

        .disabled-btn {
            background: #ccc;
            color: #999;
        }

        /* 推荐商品 */
        .recommend-section {
            background: white;
            padding: 15px;
            margin-top: 15px;
        }

        .recommend-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }

        .recommend-item {
            background: #fafafa;
            border-radius: 10px;
            overflow: hidden;
        }

        .recommend-image {
            height: 120px;
            position: relative;
        }

        .recommend-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .recommend-info {
            padding: 10px;
        }

        .recommend-name {
            font-size: 13px;
            height: 36px;
            overflow: hidden;
            margin-bottom: 5px;
        }

        .recommend-price {
            color: #e60012;
            font-weight: 700;
            font-size: 15px;
        }

        /* 空购物车 */
        .empty-cart {
            text-align: center;
            padding: 50px 20px;
            background: white;
            border-radius: 10px;
            margin: 20px;
        }

        .empty-icon {
            font-size: 80px;
            color: #f0f0f0;
            margin-bottom: 20px;
        }

        .empty-text {
            font-size: 16px;
            color: #999;
            margin-bottom: 25px;
        }

        .browse-btn {
            display: inline-block;
            padding: 12px 40px;
            background: linear-gradient(135deg, #e60012 0%, #b3000d 100%);
            color: white;
            border-radius: 25px;
            font-size: 16px;
            font-weight: 500;
        }