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

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #333;
            background: #fff;
        }

        /* 导航栏 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: #fff;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            border-bottom: 1px solid #887a64;
            padding: 5px 80px;
            height: 80px;
        }

        .logo {
            display: flex;
            align-items: flex-end;
            text-decoration: none;
            margin-right: 48px;
            padding-bottom: 8px;
        }

        .logo-image {
            height: 28px;
            width: auto;
            display: block;
        }

        .nav {
            display: flex;
            gap: 48px;
        }

        .nav a {
            font-size: 15px;
            color: #333;
            text-decoration: none;
            padding: 8px 0;
            position: relative;
        }
        .nav .active {
            color: #887a64;
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            right: 0;
            height: 4px;
            background: #887a64;
        }

        /* 下拉菜单 */
        .nav-item {
            position: relative;
            display: inline-block;
            padding: 8px 0;
        }

        .nav-item.dropdown {
            position: static;
        }

        .dropdown-toggle {
            position: relative;
            cursor: pointer;
        }

        .dropdown-toggle::after {
            content: '';
            font-size: 10px;
            margin-left: 6px;
            vertical-align: middle;
        }

        .dropdown-menu {
            position: fixed;
            top: 80px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: none;
            width: 100vw;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
        }

        .dropdown-menu.active {
            display: block;
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.65);
        }

        .dropdown-content {
            /* background: rgba(255, 255, 255, 0.95); */
            /* border: 2px solid #fff; */
            /* border-radius: 0; */
            padding: 30px 40px 30px 0px;
            width: fit-content;
            min-width: 600px;
            max-width: 900px;
            /* box-shadow: 0 8px 24px rgba(0,0,0,0.15); */
            display: flex;
            flex-direction: row;
            /* backdrop-filter: blur(10px); */
            transition: all 0.3s ease;
            position: relative;
        }

        .dropdown-menu:hover {
            background: rgba(255, 255, 255, 0.65);
        }
        

        /* 页面模糊遮罩 */
        .dropdown-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0);
            backdrop-filter: blur(0px);
            z-index: 999;
            display: none;
            transition: all 0.3s ease;
        }

        .dropdown-overlay.active {
            display: block;
            background: rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(8px);
        }

        .dropdown-left {
            flex: 1;
            display: flex;
            flex-direction: row;
            justify-content: flex-start;
            gap: 40px;
            padding: 0;
            background: transparent;
        }

        .dropdown-section {
            min-width: 180px;
            margin-bottom: 0;
            margin-right: 0;
            padding: 0;
        }

        .dropdown-section h4 {
            font-size: 16px;
            font-weight: bold;
            color: #5D4E37;
            margin-bottom: 16px;
            padding-bottom: 8px;
            /* border-bottom: 1px solid #ddd; */
        }

        .dropdown-section ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .dropdown-section li {
            margin-bottom: 12px;
            color: #666;
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s;
            padding: 4px 0;
            display: block;
        }

        .dropdown-section li a {
            color: #666;
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s;
            padding: 4px 0;
            display: block;
        }

        .dropdown-section li a:hover {
            color: #5D4E37;
            padding-left: 8px;
        }

        .dropdown-info {
            margin-top: auto;
        }

        .dropdown-info h3 {
            font-size: 18px;
            color: #333;
            font-weight: bold;
        }

        .dropdown-right {
            flex: 1;
            position: relative;
        }

        .dropdown-right img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .header-right {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
            padding-bottom: 8px;
        }

        .lang-switch {
            font-size: 12px;
            color: #8b7e6a;
            cursor: pointer;
            display: flex;
            justify-content: space-around;
            width: 120px;
        }

        .search-box {
            width: 150px;
            height: 32px;
            border: 1px solid #8b7e6a;
            border-radius: 16px;
            display: flex;
            align-items: center;
            padding: 0 12px;
            background: #fafafa;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 13px;
            color: #333;
        }

        .search-box input::placeholder {
            color: #999;
        }

        .search-box .search-icon {
            width: 16px;
            height: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        /* 轮播图 */
        .carousel {
            position: relative;
            width: 100%;
            /* height: 100vh; */
            min-height: 850px;
            overflow: hidden;
            margin-top: 80px;
        }

        .carousel-wrapper {
            position: relative;
            width: 100%;
            height: 100%;
        }

        .carousel-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.8s ease;
        }

        .carousel-slide.active {
            opacity: 1;
        }

        .carousel-slide img {
            width: 100%;
            height: 850px;
            object-fit: cover;
        }

        .carousel-content {
            position: relative;
            bottom: 220px;
            left: 80px;
            color: #ffffff;
            z-index: 5;
            max-width: 500px;
            padding: 30px;
            /* background: rgba(0, 0, 0, 0.6); */
        }

        .carousel-tag {
            font-size: 14px;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .carousel-title {
            font-size: 48px;
            font-weight: bold;
            color: #ffffff;
            margin-bottom: 32px;
            line-height: 1.2;
        }

        .carousel-info {
            font-size: 15px;
            color: #ffffff;
            line-height: 2;
        }

        .carousel-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 64px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 1;
            transition: all 0.3s;
            z-index: 10;
            /* background: rgba(0,0,0,0.3);
            border-radius: 50%; */
        }

        .carousel-arrow:hover {
            transform: translateY(-50%) scale(1.1);
            background: rgba(0,0,0,0.5);
        }

        .carousel-arrow.left {
            left: 30px;
        }

        .carousel-arrow.right {
            right: 30px;
        }

        .carousel-arrow svg {
            width: 32px;
            height: 32px;
            fill: #ffffff;
        }

        .carousel-dots {
            position: relative;
            margin: 20px auto;
            display: flex;
            justify-content: center;
            gap: 8px;
            z-index: 10;
        }

        .carousel-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(84,76,76,0.5);
            cursor: pointer;
            transition: all 0.3s;
        }

        .carousel-dot.active {
            width: 24px;
            border-radius: 4px;
            background: #5D4E37;
            border-color: #5D4E37;
        }

        /* 内容区域 */
        .section {
            padding: 110px;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
        }
        .hot .section-header {
            padding: 0 110px;
        }

        .section-title {
            font-size: 24px;
            color: #897a65;
        }

        .section-more {
            font-size: 14px;
            color: #8B7355;
            text-decoration: none;
        }

        /* 专题动态 */
        .featured {
            background: #fff;
            padding: 70px 110px 110px 110px;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .featured-left {
            padding-right: 100px;
        }

        .featured-card {
            position: relative;
            overflow: hidden;
        }

        .featured-card img {
            width: 100%;
            height: 600px;
            object-fit: cover;
        }

        .featured-card-content {
            background: #F5F5F5;
            padding: 20px 0px 20px 20px;
        }

        .featured-tag {
            display: inline-block;
            font-size: 14px;
            color: #897a65;
            /* background: #eee; */
            /* padding: 4px 12px; */
            margin-bottom: 12px;
        }

        .featured-card-title {
            font-size: 22px;
            color: #333;
            font-weight: bold;
            margin-bottom: 8px;
        }

        .featured-card-sub {
            font-size: 14px;
            color: #897a65;
            margin-bottom: 8px;
        }

        .featured-card-date {
            font-size: 13px;
            color: #897a65;
        }

        .featured-right {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .featured-small {
            display: flex;
        }

        .featured-small-img {
            width: 50%;
            flex-shrink: 0;
        }

        .featured-small-img img {
            width: 100%;
            height: 355px;
            object-fit: cover;
        }

        .featured-small-content {
            width: 50%;
            background: #FFFFFF;
            padding: 0px 0px 20px 20px;
            display: flex;
            flex-direction: column;
            justify-content: top;
        }

        /* 热门拍品 */
        .hot {
            background: #F5F5F5;
            /*padding: 110px 110px 110px 110px;*/
            padding: 110px 0px 110px 0px;
        }
        /* ========================================
           热门拍品滚动容器 - 初始状态
           ========================================
           设计目标: 
           - 初始状态下左侧保持110px留白区域
           - 滚动后留白消失,内容扩展至整行
           
           实现原理:
           - 使用padding-left设置初始留白
           - 通过添加/移除.scrolled类切换状态
           - 使用transition实现平滑过渡效果
        ======================================== */
        .hot-scroll-container {
            position: relative;
            width: 100%;
            overflow: hidden;
            /* 初始状态: 左侧110px留白 */
            padding-left: 110px;
            padding-right: 0;
            box-sizing: border-box;
            /* 添加过渡效果 */
            transition: padding-left 0.3s ease-out, padding-right 0.3s ease-out;
        }

        /* ========================================
           滚动后的状态
           ========================================
           当用户开始滚动后,移除左侧留白
        ======================================== */
        .hot-scroll-container.scrolled {
            padding-left: 0;
            padding-right: 0;
        }

        .hot-scroll {
            display: flex;
            gap: 80px;
            overflow: visible;
            padding-bottom: 16px;
            transition: transform 0.5s cubic-bezier(0.33, 0, 0.15, 1);
            will-change: transform;
        }

        .hot-scroll::-webkit-scrollbar {
            display: none;
        }

        .hot-card {
            flex-shrink: 0;
            width: 370px;
            background: #F5F5F5;
        }

        .hot-card-img {
            width: 100%;
            height: 350px;
            overflow: hidden;
            text-align: center;
            background: #fff;
        }

        .hot-card-img img {
            /*width: 100%;*/
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .hot-card-content {
            background: #F5F5F5;
            padding: 16px 0;
        }

        .hot-card-lot {
            font-size: 12px;
            color: #a89e8f;
            margin-bottom: 8px;
        }

        .hot-card-artist {
            font-size: 16px;
            color: #333;
            font-weight: bold;
            margin-bottom: 4px;
        }

        .hot-card-name {
            font-size: 15px;
            color: #333;
            font-weight: bold;
            margin-bottom: 8px;
        }

        .hot-card-price {
            font-size: 13px;
            color: #887a65;
        }

        .hot-controls {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 24px;
            margin-top: 24px;
        }

        .hot-arrow {
            width: 40px;
            height: 40px;
            /* border: 1px solid #ddd;
            border-radius: 50%; */
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
        }

        .hot-arrow:hover {
            border-color: #5D4E37;
        }

        .hot-arrow svg {
            width: 40px;
            height: 40px;
            fill: #c5a87b;
        }

        .hot-dots {
            display: flex;
            gap: 12px;
        }

        .hot-dot {
            width: 8px;
            height: 8px;
            border: 1px solid #999;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s;
        }

        .hot-dot.active {
            width: 24px;
            border-radius: 4px;
            background: #5D4E37;
            border-color: #5D4E37;
        }

        /* 春季专场 */
        .spring {
            background: #FFFFFF;
            padding: 110px 110px 200px 110px;
        }

        .spring-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .spring-card {
            background: #fff;
            margin-right: 100px;
        }

        .spring-card-img {
            width: 100%;
            height: 320px;
            overflow: hidden;
        }

        .spring-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .spring-card-content {
            background: #fff;
            padding: 20px 0px 20px 0px;
        }

        .spring-card-lot {
            font-size: 12px;
            color: #a89e8f;
            margin-bottom: 8px;
        }

        .spring-card-title {
            font-size: 18px;
            color: #333;
            font-weight: bold;
            margin-bottom: 12px;
        }

        .spring-card-info {
            font-size: 13px;
            color: #887a65;
            line-height: 1.8;
        }

        /* 页脚 */
        .footer {
            background: #F5F5F5;
            padding: 24px 60px;
        }

        .footer-breadcrumb {
            font-size: 12px;
            color: #333;
            margin-bottom: 16px;
        }

        .footer-divider {
            height: 1px;
            background: #E5E5E5;
            margin-bottom: 16px;
        }

        .footer-content {
            display: flex;
            justify-content: flex-start;
            align-items: center;
        }

        .footer-copyright {
            font-size: 12px;
            color: #333;
        }

        .footer-links {
            gap: 16px;
        }

        .footer-links a {
            font-size: 12px;
            color: #333;
            text-decoration: none;
        }

        .footer-links span {
            color: #ccc;
        }

        /* 响应式 */
       /* @media (max-width: 1024px) {
            .header {
                padding: 12px 24px;
            }

            .nav {
                display: none;
            }

            .section {
                padding: 40px 24px;
            }

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

            .featured-right {
                flex-direction: column;
            }

            .featured-small {
                flex-direction: column;
            }

            .featured-small-img {
                width: 100%;
            }

            .featured-small-img img {
                height: 200px;
            }

            .featured-small-content {
                width: 100%;
            }

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

            .carousel-title {
                font-size: 32px;
            }

            .carousel-left {
                padding: 0 40px;
            }
        }

        @media (max-width: 768px) {
            .header-right {
                flex-direction: row;
                align-items: center;
                gap: 16px;
            }

            .carousel-left {
                width: 100%;
                padding: 0 24px;
            }

            .carousel-right {
                display: none;
            }

            .carousel-title {
                font-size: 28px;
            }

            .hot-card {
                width: 240px;
            }

            .hot-card-img {
                height: 280px;
            }

            .footer-content {
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
        }*/

        /* 移动端菜单 */
        /*.mobile-menu-btn {
            display: none;
            width: 24px;
            height: 24px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
        }

        .mobile-menu-btn span {
            display: block;
            width: 100%;
            height: 2px;
            background: #333;
        }

        @media (max-width: 1024px) {
            .mobile-menu-btn {
                display: flex;
            }
        }*/
        /* 响应式布局 */
@media (max-width: 1920px) {
    /* .section {
        padding: 80px 40px;
    } */

    .header {
        padding: 5px 110px;
    }

    .spring-card {
        margin-right: 0;
    }

    .spring-grid {
        gap: 100px;
    }

    .featured-left {
        padding-right: 100px;
    }

    .featured-card img {
        /* height: 340px; */
    }

    .carousel-content {
        left: 50px;
        bottom: 300px;
    }
}
@media (max-width: 1600px) {
    
    /* 轮播图 */
    .carousel {
        position: relative;
        width: 100%;
        /* height: 100vh; */
        min-height: 600px;
        overflow: hidden;
        margin-top: 80px;
    }
    /* 轮播图 */
    .carousel-slide img {
        height: 600px;
    }
}
@media (max-width: 1024px) {
    .header {
        /* 修复：原 110px 在中屏挤压导航，改为 24px */
        padding: 12px 24px;
        height: 80px;
    }

    /* header 高度变化后，dropdown 与轮播也要联动 */
    .dropdown-menu { top: 80px; }
    .carousel { margin-top: 80px; }

    .nav {
        display: none;
    }

    .section {
        padding: 60px 24px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .featured-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .featured-left {
        /* 修复：单列布局下不再保留右内边距 */
        padding-right: 0;
    }

    .featured-right {
        flex-direction: column;
        gap: 24px;
    }

    .featured-small {
        flex-direction: column;
    }

    .featured-small-img {
        width: 100%;
    }

    .featured-small-img img {
        height: 200px;
    }

    .featured-small-content {
        width: 100%;
    }

    .featured-card img {
        height: 280px;
    }

    .spring-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .carousel-title {
        font-size: 36px;
    }

    .carousel-content {
        left: 24px;
        right: 24px;
        bottom: 140px;
        padding: 24px;
        max-width: none;
    }

    .hot-scroll-container {
        padding: 0 20px;
    }

    .hot-controls {
        padding: 0 20px;
    }

    .footer {
        padding: 24px 24px;
    }
}

@media (max-width: 768px) {
    .header-right {
        flex-direction: row;
        align-items: center;
        gap: 16px;
    }

    .lang-switch {
        display: none;
    }

    .search-box {
        width: 160px;
        display: none;
    }

    .section {
        padding: 40px 16px;
    }

    .carousel {
        min-height: 500px;
    }

    .carousel-title {
        font-size: 28px;
    }

    .carousel-content {
        left: 16px;
        right: 16px;
        bottom: 100px;
        padding: 20px;
        max-width: none;
    }

    .carousel-tag {
        font-size: 12px;
        margin-bottom: 8px;
    }

    .carousel-info {
        font-size: 13px;
        line-height: 1.6;
    }

    .carousel-arrow {
        width: 48px;
        height: 48px;
    }

    .carousel-arrow svg {
        width: 24px;
        height: 24px;
    }

    .carousel-arrow.left {
        left: 10px;
    }

    .carousel-arrow.right {
        right: 10px;
    }

    .carousel-dots {
        margin: 16px auto;
    }

    .featured-card img {
        height: 220px;
    }

    .featured-card-title {
        font-size: 16px;
    }

    .featured-small-img img {
        height: 180px;
    }

    .spring-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .spring-card-img {
        height: 240px;
    }

    .hot-scroll-container {
        padding: 0 16px;
    }

    .hot-card {
        width: 260px;
    }

    .hot-card-img {
        height: 300px;
    }

    .hot-arrow {
        width: 40px;
        height: 40px;
    }

    .footer {
        padding: 20px 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    .mobile-menu-btn {
        display: flex !important;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 12px 16px;
    }

    .logo-image {
        height: 28px;
    }

    .search-box {
        width: 120px;
        display: none;
    }

    .carousel {
        min-height: 400px;
    }

    .carousel-title {
        font-size: 24px;
        margin-bottom: 16px;
    }

    .carousel-content {
        bottom: 80px;
        padding: 16px;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
    }

    .carousel-arrow.left {
        left: 10px;
    }

    .carousel-arrow.right {
        right: 10px;
    }

    .section-title {
        font-size: 20px;
    }

    .featured-card img {
        height: 200px;
    }

    .featured-card-title {
        font-size: 16px;
    }

    .featured-small-img img {
        height: 150px;
    }

    .spring-card-img {
        height: 200px;
    }

    .spring-card-title {
        font-size: 16px;
    }

    .hot-card {
        width: 220px;
    }

    .hot-card-img {
        height: 260px;
    }

    .hot-arrow {
        width: 36px;
        height: 36px;
    }

    .footer-breadcrumb,
    .footer-copyright,
    .footer-links a {
        font-size: 11px;
    }
    .mobile-menu-btn {
        display: flex !important;
    }
}

/* 移动端菜单 */
.mobile-menu-btn {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    transition: all 0.3s;
    background: #f8f8f8;
    border-radius: 4px;
    padding: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: #5D4E37;
    border-radius: 1px;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: #f0f0f0;
}

.mobile-menu-btn.active {
    background: #5D4E37;
}

.mobile-menu-btn.active span {
    background: #fff;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -7px);
}

/* 移动菜单 */
.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-radius: 0 0 8px 8px;
}

.mobile-menu.active {
    max-height: calc(100vh - 80px);
    overflow-y: auto;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 16px;
}

.mobile-nav a {
    padding: 14px 12px;
    font-size: 16px;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #f5f5f5;
    transition: all 0.3s ease;
    border-radius: 4px;
    margin-bottom: 4px;
}

.mobile-nav a:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.mobile-nav a.active {
    color: #fff;
    background: #5D4E37;
    font-weight: bold;
}

.mobile-nav a:hover {
    color: #5D4E37;
    background: #f8f8f8;
    padding-left: 18px;
}

.mobile-nav a.active:hover {
    color: #fff;
    background: #4a3d2c;
    padding-left: 12px;
}

/* 移动端菜单项样式 */
.mobile-nav-item {
    border-bottom: 1px solid #f0f0f0;
    background: #fff;
    transition: all 0.3s ease;
}

.mobile-nav-item:last-child {
    border-bottom: none;
}

/* 移动端菜单链接 */
.mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #5D4E37;
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.mobile-nav-link:hover {
    background: #fafafa;
    padding-left: 24px;
}

.mobile-nav-link:hover::before {
    transform: scaleY(1);
}

/* 移动端箭头 */
.mobile-arrow {
    font-size: 10px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: #999;
    display: inline-block;
}

.mobile-nav-item.has-submenu.open .mobile-arrow {
    transform: rotate(180deg);
    color: #5D4E37;
}

/* 移动端子菜单 */
.mobile-submenu {
    display: none;
    background: #f9f9f9;
    padding: 0;
    overflow: hidden;
}

.mobile-nav-item.has-submenu.open .mobile-submenu {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端子菜单分区 */
.mobile-submenu-section {
    padding: 16px 20px;
    border-bottom: 1px solid #e8e8e8;
    background: #fff;
    margin-bottom: 2px;
}

.mobile-submenu-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

/* 移动端子菜单标题 */
.mobile-submenu-title {
    font-size: 14px;
    font-weight: bold;
    color: #5D4E37;
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid #5D4E37;
    display: inline-block;
    position: relative;
}

.mobile-submenu-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 30px;
    height: 2px;
    background: #c5a87b;
}

/* 移动端子菜单链接 */
.mobile-submenu a {
    display: block;
    padding: 10px 0;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 0;
}

.mobile-submenu a::before {
    content: '•';
    position: absolute;
    left: -12px;
    color: #5D4E37;
    opacity: 0;
    transition: all 0.3s ease;
}

.mobile-submenu a:hover {
    color: #5D4E37;
    padding-left: 16px;
    background: linear-gradient(90deg, rgba(93, 78, 55, 0.05) 0%, transparent 100%);
}

.mobile-submenu a:hover::before {
    opacity: 1;
    left: 0;
}

/* 移动端菜单响应式适配 */
@media (max-width: 768px) {
    .mobile-menu {
        top: 80px;
        max-height: 0;
    }

    .mobile-menu.active {
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }

    .mobile-nav-link {
        padding: 18px 24px;
        font-size: 17px;
    }

    .mobile-submenu-section {
        padding: 18px 24px;
    }

    .mobile-submenu a {
        padding: 12px 0;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .mobile-menu {
        top: 70px;
    }

    .mobile-nav-link {
        padding: 16px 20px;
        font-size: 16px;
    }

    .mobile-submenu-section {
        padding: 14px 20px;
    }

    .mobile-submenu-title {
        font-size: 13px;
    }

    .mobile-submenu a {
        padding: 10px 0;
        font-size: 14px;
    }
}

/* 移动端菜单滚动条样式 */
.mobile-menu.active::-webkit-scrollbar {
    width: 4px;
}

.mobile-menu.active::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.mobile-menu.active::-webkit-scrollbar-thumb {
    background: #5D4E37;
    border-radius: 2px;
}

.mobile-menu.active::-webkit-scrollbar-thumb:hover {
    background: #4a3d2c;
}

/* 移动端菜单触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .mobile-nav-link {
        min-height: 48px;
        display: flex;
        align-items: center;
    }

    .mobile-submenu a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .mobile-nav-link:hover {
        background: #fff;
        padding-left: 20px;
    }

    .mobile-submenu a:hover {
        background: transparent;
        padding-left: 0;
    }
}

/* 移动端菜单动画效果 */
.mobile-nav-item {
    animation: fadeInUp 0.3s ease;
    animation-fill-mode: both;
}

.mobile-nav-item:nth-child(1) {
    animation-delay: 0.05s;
}

.mobile-nav-item:nth-child(2) {
    animation-delay: 0.1s;
}

.mobile-nav-item:nth-child(3) {
    animation-delay: 0.15s;
}

.mobile-nav-item:nth-child(4) {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端菜单打开时的遮罩效果 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 移动端菜单无障碍优化 */
.mobile-nav-link:focus {
    outline: 2px solid #5D4E37;
    outline-offset: -2px;
}

.mobile-submenu a:focus {
    outline: 2px solid #5D4E37;
    outline-offset: -2px;
}

/* 移动端菜单高对比度模式 */
@media (prefers-contrast: high) {
    .mobile-nav-link {
        border: 1px solid #333;
    }

    .mobile-submenu a {
        border-bottom: 1px solid #999;
    }
}

/* 移动端菜单减少动画 */
@media (prefers-reduced-motion: reduce) {
    .mobile-menu,
    .mobile-nav-link,
    .mobile-submenu,
    .mobile-arrow,
    .mobile-nav-item {
        transition: none;
        animation: none;
    }
}

/* ============================================================
   移动端响应式优化（仅作用于移动断点，不影响 PC 端样式）
   目标：
   1) 上传的图片在移动端完整显示（不被 cover 裁切）
   2) 布局在移动设备上不错乱（栅格、内边距、外边距、定位）
   ============================================================ */

/* —— 中屏（≤1024px）：栅格收敛 + 图片高度自适应 —— */
@media (max-width: 1024px) {
    /* 节区内边距全面收敛，避免大空白 */
    .featured,
    .hot,
    .spring {
        padding: 60px 24px;
    }

    /* 专题动态：主图 / 小图都改为高度自适应 + 完整显示 */
    .featured-card img {
        width: 100%;
        height: auto;
        max-height: 420px;
        /*object-fit: contain;*/       /* 完整显示，不裁切 2026-05-17修改*/
        object-fit: cover‌;
        background: #f5f5f5;       /* contain 留白用底色填充 */
        display: block;
    }

    .featured-small {
        flex-direction: row;       /* 中屏仍并排 */
    }
    .featured-small-img,
    .featured-small-content {
        width: 50%;
    }
    .featured-small-img img {
        width: 100%;
        height: auto;
        max-height: 260px;
        /*object-fit: contain; 2026-05-17修改*/ 
        object-fit: cover‌;
        background: #f5f5f5;
    }

    /* 春季专场：避免 320px 固定高度造成裁切 */
    .spring-card {
        margin-right: 0;
    }
    .spring-card-img {
        width: 100%;
        height: auto;              /* 由图片自身比例决定 */
        max-height: 360px;
        overflow: hidden;
    }
    .spring-card-img img {
        width: 100%;
        height: auto;
        object-fit: contain;
        background: #f5f5f5;
    }

    /* 轮播：定位由绝对 bottom 改为相对底部留白，避免错位 */
    .carousel-content {
        left: 24px;
        right: 24px;
        bottom: 80px;
        max-width: none;
    }
    .carousel-slide img {
        width: 100%;
        height: 100%;
        min-height: 360px;
        object-fit: cover;         /* 轮播作为视觉背景，cover 更自然 */
    }
}

/* —— 小屏（≤768px）：单列栈式布局 —— */
@media (max-width: 768px) {
    .header {
        padding: 8px 16px;
        height: 64px;
    }
    .dropdown-menu { top: 64px; }
    .carousel { margin-top: 64px; min-height: 420px; }

    .featured,
    .hot,
    .spring {
        padding: 40px 16px;
    }

    /* 专题动态完全单列 */
    .featured-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .featured-left {
        padding-right: 0;
    }
    .featured-card img {
        max-height: 320px;
    }

    /* 小卡片在 768 以下竖向堆叠 */
    .featured-small {
        flex-direction: column;
    }
    .featured-small-img,
    .featured-small-content {
        width: 100%;
    }
    .featured-small-img img {
        max-height: 240px;
    }

    /* 热门拍品：缩略图保持 cover（更紧凑），但容器变小 */
    .hot {
        padding: 40px 0 40px 16px;
    }
    .hot-scroll {
        gap: 16px;
        padding-right: 16px;
    }
    .hot-card {
        width: 220px;
    }
    .hot-card-img {
        height: 260px;
    }

    /* 春季专场单列且不裁切 */
    .spring-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .spring-card-img {
        max-height: 320px;
    }

    /* 轮播信息块缩小 */
    .carousel-content {
        bottom: 32px;
        padding: 16px;
    }
    .carousel-title {
        font-size: 26px;
        margin-bottom: 16px;
    }

    /* 页脚单列 */
    .footer {
        padding: 20px 16px;
    }
    .footer-content {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}

/* —— 极小屏（≤480px）：进一步压缩 —— */
@media (max-width: 480px) {
    .header {
        padding: 8px 12px;
        height: 56px;
    }
    .dropdown-menu { top: 56px; }
    .carousel { margin-top: 56px; min-height: 340px; }

    .featured,
    .hot,
    .spring {
        padding: 32px 12px;
    }

    .featured-card img      { max-height: 240px; }
    .featured-small-img img { max-height: 200px; }
    .spring-card-img        { max-height: 260px; }

    .hot-card     { width: 180px; }
    .hot-card-img { height: 220px; }

    .carousel-title { font-size: 22px; }
    .carousel-info  { font-size: 12px; }
}

/* —— 全局图片兜底：避免任何 img 在窄屏溢出容器 —— */
@media (max-width: 1024px) {
    img {
        max-width: 100%;
    }
}