/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* 导航栏 */
.navbar {
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(255, 140, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    padding: 0.8rem 0;
    backdrop-filter: blur(10px);
    height: 90px;
    box-sizing: border-box;
}

/* 移动端菜单切换按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: #f5f5f5;
    color: #ff8c00;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2.5rem;
    flex-wrap: nowrap;
}

.nav-logo {
    flex-shrink: 0;
}

.nav-menu {
    flex: 1;
    display: flex;
    list-style: none;
    gap: 0;
    align-items: center;
    justify-content: center;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.nav-menu::-webkit-scrollbar {
    display: none;
}

.language-switcher {
    flex-shrink: 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
}

.nav-logo .logo {
    width: auto;
    height: 50px;
    object-fit: contain;
    transition: height 0.3s ease;
}

.nav-logo h1 {
    color: #000000;
    font-size: 1.4rem;
    font-weight: 500;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    text-shadow: 
        -0.5px -0.5px 0 #fff,
        0.5px -0.5px 0 #fff,
        -0.5px 0.5px 0 #fff,
        0.5px 0.5px 0 #fff,
        0 0 0.5px #fff;
}

.nav-menu > li {
    position: relative;
    margin: 0 0.1rem;
}

.nav-menu > li > a {
    display: block;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.6rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

/* 英文页面一级菜单字体加粗 */
.nav-menu > li > a[data-lang="en"] {
    font-weight: 600;
    letter-spacing: 1px;
}

/* 英文页面导航菜单右移 */
.nav-container[data-lang="en"] .nav-menu {
    margin-left: auto;
    margin-right: 2rem;
}

/* 菜单项悬停效果 - 只保留底部线条 */
.nav-menu > li > a {
    position: relative;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #ff8c00, #ff6b35);
    border-radius: 1px;
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

.nav-menu > li > a:hover::after {
    width: 70%;
    height: 2px;
}

.nav-menu > li > a:hover {
    color: #ff8c00;
    background: transparent !important;
    border: none !important;
}

/* 激活状态 */
.nav-menu > li.active > a {
    background: linear-gradient(135deg, #ff8c00, #ff6b35);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 140, 0, 0.3);
}

.nav-menu > li.active > a::before {
    display: none;
}

/* 简洁二级菜单样式 */
.nav-menu .has-submenu > a::after {
    content: '▼';
    margin-left: 8px;
    font-size: 10px;
    transition: transform 0.3s ease;
}

.nav-menu .has-submenu:hover > a::after {
    transform: rotate(180deg);
}

.nav-menu .submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    min-width: 200px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 140, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 8px 0;
    margin-top: 8px;
}

.nav-menu .submenu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 140, 0, 0.1);
    border-bottom: none;
    border-right: none;
    transform: translateX(-50%) rotate(45deg);
}

.nav-menu .has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-menu .submenu-link {
    display: block;
    padding: 10px 20px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(255, 140, 0, 0.05);
    list-style: none;
}

.nav-menu .submenu-link:last-child {
    border-bottom: none;
}

.nav-menu .submenu-link:hover {
    color: #ff8c00;
    padding-left: 1.5rem;
}

/* 移动端菜单切换按钮 - 极简设计 */
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
    padding: 0.5rem;
    transition: color 0.2s ease;
}

.menu-toggle:hover {
    color: #ff8c00;
}

.menu-toggle.active {
    color: #ff8c00;
}

/* 后台管理系统样式 */
.admin-container {
    display: flex;
    min-height: 100vh;
    background: #f8f9fa;
}

.admin-main-content {
    flex: 1;
    padding: 20px;
    margin-left: 0;
}

.admin-page-header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid #007bff;
}

.admin-page-header h1 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 5px;
    font-weight: 600;
}

.admin-page-header p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.admin-panel {
    background: white;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow: hidden;
    border: 1px solid #e9ecef;
}

.admin-panel-header {
    background: #f8f9fa;
    padding: 15px 20px;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
}

.admin-panel-content {
    padding: 20px;
}

.admin-compact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 12px;
}

.admin-grid-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 8px;
}

.admin-grid-col {
    display: flex;
    flex-direction: column;
}

.admin-grid-col-full {
    grid-column: 1 / -1;
}

.admin-compact-label {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 4px;
    font-weight: 500;
}

.admin-compact-input {
    padding: 6px 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 0.8rem;
    background: white;
    transition: border-color 0.2s;
}

.admin-compact-input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.1);
}

.admin-compact-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 3px;
    font-size: 0.8rem;
    cursor: pointer;
    background: #007bff;
    color: white;
    transition: background-color 0.2s;
    font-weight: 500;
}

.admin-compact-btn:hover {
    background: #0056b3;
}

.admin-compact-btn.delete {
    background: #dc3545;
}

.admin-compact-btn.delete:hover {
    background: #c82333;
}

.admin-compact-btn.secondary {
    background: #6c757d;
}

.admin-compact-btn.secondary:hover {
    background: #545b62;
}

.admin-compact-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
}

.admin-compact-checkbox input[type="checkbox"] {
    margin: 0;
}

.admin-message {
    padding: 10px 15px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    border-left: 4px solid;
}

.admin-message.success {
    background: #d4edda;
    color: #155724;
    border-color: #28a745;
}

.admin-message.error {
    background: #f8d7da;
    color: #721c24;
    border-color: #dc3545;
}

.admin-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background: #28a745;
    color: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s;
    font-weight: 500;
}

.admin-btn:hover {
    background: #218838;
}

.admin-btn.secondary {
    background: #6c757d;
}

.admin-btn.secondary:hover {
    background: #545b62;
}

.admin-form-group {
    margin-bottom: 15px;
}

.admin-form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #495057;
}

.admin-form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.admin-form-input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.1);
}

/* 中小屏幕适配 (769px - 1100px) - 当菜单项过多时启用汉堡菜单 */
@media (max-width: 1100px) {
    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav-logo {
        order: 1;
    }
    
    .language-switcher {
        order: 2;
        margin-left: auto;
        margin-right: 1rem;
    }
    
    .menu-toggle {
        display: block;
        order: 3;
        margin-left: 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        right: 0;
        left: auto;
        width: 50%;
        max-width: 300px;
        max-height: calc(100vh - 90px);
        background: #ffffff;
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        box-shadow: -2px 0 16px rgba(0, 0, 0, 0.1);
        border-left: 2px solid #ff8c00;
        border-right: none;
        overflow-y: auto;
        justify-content: flex-start;
        flex: none;
        display: none;
    }
    
    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
        display: flex;
    }
    
    .nav-menu > li {
        margin: 0;
        width: 100%;
    }
    
    .nav-menu > li > a {
        display: block;
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
        font-weight: 500;
        border-radius: 0;
        background: #ffffff;
        color: #333;
        text-decoration: none;
        transition: all 0.2s ease;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav-menu > li > a:hover {
        background: transparent !important;
        color: #ff8c00;
    }
    
    .nav-menu > li:last-child > a {
        border-bottom: none;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .nav-container {
        position: relative;
        padding: 0 1rem;
    }
    
    /* 移动端二级菜单处理 */
    .nav-menu .has-submenu > a::after {
        display: none;
    }
    
    .nav-menu .submenu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        background: rgba(255, 140, 0, 0.03);
        border: none;
        border-radius: 8px;
        margin: 0.5rem 0 0 0;
        padding: 0.5rem 0;
    }
    
    .nav-menu .submenu::before {
        display: none;
    }
    
    .nav-menu .submenu-link {
        padding: 0.8rem 2rem;
        font-size: 1rem;
        background: transparent;
        transition: background-color 0.2s ease;
        list-style: none;
    }
    
    .nav-menu .submenu-link:hover {
        background: rgba(255, 140, 0, 0.1);
        transform: none;
        padding-left: 2rem;
        margin-left: 0;
    }
    
    /* 移动端语言切换器适配 */
    .language-switcher {
        margin: 0 1rem;
        justify-content: flex-end;
        gap: 4px;
        flex-shrink: 0;
    }
    
    .lang-btn {
        padding: 4px 0;
        font-size: 13px;
        width: 44px;
        height: 28px;
        white-space: nowrap;
        flex-shrink: 0;
    }
}

/* 语言切换器 - 小巧简洁风格 */
.language-switcher {
    display: flex;
    gap: 2px;
    background: transparent;
    border-radius: 0;
    padding: 0;
    border: none;
}

.lang-btn {
    background: transparent;
    border: 1px solid transparent;
    padding: 6px 0;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    color: #666;
    width: 48px;
    text-align: center;
    line-height: 1;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* 国旗图标样式 */
.flag-icon {
    display: inline-block;
    width: 32px;
    height: 21px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 2px;
    box-shadow: none;
}

.flag-cn {
    background: #de2910;
    position: relative;
}

.flag-cn::before {
    content: "★★★★★";
    position: absolute;
    top: 2px;
    left: 2px;
    color: #ffde00;
    font-size: 3px;
    line-height: 1;
    letter-spacing: 1px;
    transform: scale(0.8);
}

.flag-cn::after {
    content: "★★★★";
    position: absolute;
    top: 7px;
    left: 5px;
    color: #ffde00;
    font-size: 2px;
    line-height: 1;
    letter-spacing: 1px;
    transform: scale(0.8);
}

.flag-us {
    background: 
        linear-gradient(to bottom, 
            #b22234 0%, #b22234 7.7%, 
            white 7.7%, white 15.4%, 
            #b22234 15.4%, #b22234 23.1%, 
            white 23.1%, white 30.8%, 
            #b22234 30.8%, #b22234 38.5%, 
            white 38.5%, white 46.2%, 
            #b22234 46.2%, #b22234 53.9%, 
            white 53.9%, white 61.6%, 
            #b22234 61.6%, #b22234 69.3%, 
            white 69.3%, white 77.0%, 
            #b22234 77.0%, #b22234 84.7%, 
            white 84.7%, white 92.4%, 
            #b22234 92.4%, #b22234 100%
        );
    position: relative;
}

.flag-us::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 53.9%;
    background: #3c3b6e;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flag-us::after {
    content: "★";
    position: absolute;
    top: 2px;
    left: 2px;
    color: white;
    font-size: 6px;
    line-height: 1;
}

.lang-btn.active {
    background: #ff8c00;
    border-color: #ff8c00;
    color: #fff;
}

.lang-btn:hover {
    border-color: #ff8c00;
    color: #ff8c00;
}

.lang-btn.active:hover {
    background: #ff6b35;
    border-color: #ff6b35;
    color: #fff;
}

/* 首页横幅 */
.hero {
    position: relative;
    color: white;
    padding: 180px 0 120px;
    text-align: center;
    margin-top: 90px;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ff8c00 0%, #ff6b35 50%, #ff5252 100%);
    z-index: -2;
}

.hero-banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.banner-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity; /* 提示浏览器优化动画性能 */
}

.banner-image.active {
    opacity: 1;
}

/* 点阵效果已移除以提升性能 */

.hero-gradient {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(ellipse at center, rgba(255,255,255,0.1) 0%, transparent 70%);
        z-index: 2;
    }

    .hero-content {
        position: absolute;
        z-index: 1;
        bottom: 100px;
        left: 100px;
        max-width: 600px;
    }
    
    /* 横幅指示器 - 现代圆点风格 */
    .banner-indicators {
        position: absolute;
        bottom: 120px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 8px;
        z-index: 10;
        background: rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(10px);
        padding: 8px 14px;
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .indicator {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.3);
        cursor: pointer;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border: 1px solid transparent;
        position: relative;
    }

    .indicator::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0);
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background: rgba(255, 140, 0, 0.3);
        transition: transform 0.3s ease;
    }

    .indicator:hover {
        background: rgba(255, 255, 255, 0.6);
        transform: scale(1.2);
    }

    .indicator:hover::before {
        transform: translate(-50%, -50%) scale(1.5);
    }

    .indicator.active {
        background: #ff8c00;
        border-color: rgba(255, 255, 255, 0.5);
        transform: scale(1.3);
        box-shadow: 0 0 15px rgba(255, 140, 0, 0.8);
    }

    .indicator.active::before {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
    
    /* 横幅区域背景图片移动端优化 */
    @media (max-width: 768px) {
        .hero-gradient {
            background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.7) 100%);
        }
        
        .hero-particles {
            display: none; /* 在移动端隐藏粒子效果以提升性能 */
        }
        
        .banner-indicators {
            bottom: 100px;
            padding: 6px 12px;
            gap: 6px;
        }

        .indicator {
            width: 6px;
            height: 6px;
        }

        .indicator.active {
            transform: scale(1.5);
        }
    }

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 20px;
    border-radius: 25px;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: #ff8c00;
    text-align: left;
    text-shadow: 
        2px 2px 0 #000,
        -2px -2px 0 #000,
        2px -2px 0 #000,
        -2px 2px 0 #000,
        0 2px 0 #000,
        2px 0 0 #000,
        0 -2px 0 #000,
        -2px 0 0 #000,
        0 2px 10px rgba(255,255,255,0.8);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    color: #ff6b35;
    line-height: 1.6;
    font-weight: 400;
    text-shadow: 0 1px 5px rgba(255,255,255,0.8);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.cta-button {
    border: none;
    padding: 18px 35px;
    font-size: 1.1rem;
    border-radius: 0;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}

.cta-button.primary {
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 140, 0, 0.4);
}

.cta-button.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 140, 0, 0.6);
    animation: shake 0.5s ease-in-out;
}

.cta-button.secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    animation: shake 0.5s ease-in-out;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    min-width: 120px;
    flex-shrink: 0;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #ff8c00;
    text-shadow: 0 2px 10px rgba(255,255,255,0.8);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.scroll-indicator {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-arrow {
    font-size: 1.2rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-3px); }
}

/* 关于我们 */
.about {
    padding: 5rem 0;
    background: white;
}

.about h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
    align-items: flex-end;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin: 0 0 2rem 0;
}

.learn-more-btn {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(255, 140, 0, 0.3);
    align-self: flex-end;
    margin-top: 1rem;
}

.learn-more-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 140, 0, 0.4);
    background: linear-gradient(45deg, #ff6b35, #ff8c00);
}

.about-image {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 100%;
}

.about-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

/* 服务项目 */
.services {
    padding: 4rem 0;
    background: white;
}

.services h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

.services-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

.service-card {
    text-align: left;
    padding: 0;
    margin: 0;
}

.service-card .service-icon {
    display: none;
}

.service-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 600;
    padding: 0;
}

.service-card p {
    color: #666;
    line-height: 1.5;
    margin-bottom: 0.5rem;
    padding: 0;
}

.service-card .service-features {
    margin-top: 0.5rem;
    padding: 0;
}

.service-card .feature-list {
    list-style: none;
    text-align: left;
    padding: 0;
    margin: 0;
}

.service-card .feature-list li {
    color: #666;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    padding: 0;
}

.service-card .feature-list li::before {
    content: '•';
    color: #007bff;
    font-weight: normal;
    margin-right: 0.5rem;
}

/* 联系我们页面样式 */
.contact {
    padding: 80px 0;
    background: white;
}

.contact h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 联系我们内容区域 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2.5rem;
    align-items: start;
    box-sizing: border-box;
}

/* 联系方式区域 */
.contact-info-section {
    padding: 1.5rem 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.contact-info-section h2 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-weight: 600;
    text-align: left;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.2rem;
    align-self: stretch;
    flex: 1;
    justify-content: space-between;
}

.contact-item {
    padding: 0.15rem 0;
    /* border-bottom: 1px solid #e9ecef; */
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-height: auto;
}

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

.contact-item h3 {
    font-size: 1.1rem;
    color: #ff8c00;
    margin-bottom: 0.2rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    justify-content: space-between;
}

/* 复制按钮样式 */
.copy-btn {
    background: transparent;
    color: #666;
    border: 1px solid #ddd;
    padding: 0.2rem 0.4rem;
    border-radius: 6px;
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.1rem;
    margin-left: auto;
}

.copy-btn:hover {
    background: #f5f5f5;
    border-color: #ccc;
}

.copy-btn:active {
    background: #e0e0e0;
}

.copy-btn.success {
    color: #28a745;
    border-color: #28a745;
    background: transparent;
}

.copy-text {
    font-size: 0.75rem;
}

.local-icon-sm {
    width: 14px;
    height: 14px;
}

/* 联系方式内容包装器 */
.contact-content-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    width: 100%;
}

.contact-item p {
    font-size: 1rem;
    color: #666;
    line-height: 1.5;
    margin: 0;
    flex: 0 1 auto;
    max-width: 70%;
}

/* 调整复制按钮位置 */
.contact-content-wrapper .copy-btn {
    margin-left: 0;
    margin-top: -0.1rem;
    align-self: flex-start;
    flex-shrink: 0;
}

/* 手机端电话号码链接样式 */
.phone-link {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
    /* 在移动设备上显示为可点击 */
    cursor: pointer;
}

@media (hover: hover) {
    .phone-link:hover {
        color: #ff8c00;
        text-decoration: underline;
    }
}

/* 移动设备上的电话号码样式 */
@media (max-width: 768px) {
    .phone-link {
        color: #ff8c00;
        font-weight: 500;
        text-decoration: underline;
        /* 允许在移动设备上选择和点击 */
        -webkit-user-select: auto;
        -moz-user-select: auto;
        -ms-user-select: auto;
        user-select: auto;
    }
    
    .phone-link:active {
        color: #e67e00;
        transform: scale(0.98);
    }
}

/* 在线留言表单区域 */
.contact-form-section {
    padding: 1.5rem 0;
    background: white;
}

.contact-form-section h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 600;
    text-align: center;
}

/* 表单样式 */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: start;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.95rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    transition: border-color 0.3s ease;
    background: white;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    resize: vertical;
}

/* 表单错误状态 */
.form-group input.error,
.form-group textarea.error {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* 消息提示样式 */
.form-message {
    padding: 0.5rem 0.8rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.9rem;
    animation: fadeIn 0.3s ease;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.form-message .message-content {
    margin: 0;
}

/* 居中弹窗消息样式 */
.form-message.modal-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 0;
    margin: 0;
    border-radius: 0;
    animation: fadeIn 0.3s ease;
    pointer-events: none;
}

.form-message.modal-message .message-content {
    pointer-events: auto;
}

.form-message.modal-message .message-content {
    background-color: #ffffff;
    padding: 16px 24px;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    color: #155724;
    min-width: 160px;
    max-width: 260px;
    position: relative;
    animation: scaleIn 0.3s ease;
}

.form-message.modal-message.success .message-content {
    border: 1px solid #28a745;
}

.form-message.modal-message.error .message-content {
    border: 1px solid #dc3545;
    color: #721c24;
}

.form-message.modal-message .message-content::before {
    content: '✓';
    display: block;
    font-size: 1.5rem;
    color: #28a745;
    margin-bottom: 6px;
}

.form-message.modal-message.error .message-content::before {
    content: '✗';
    color: #dc3545;
}

@keyframes scaleIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 按钮加载状态 */
.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loading-spinner {
    display: inline-block;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

/* 产品筛选器样式 */
/* 顶部标签式筛选器样式 */
.tab-filter-container {
    background: #fff;
    padding: 1.5rem 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e8e8e8;
}

.tab-filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.tab-filter-header h3 {
    color: #333;
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.filter-reset-btn {
    background: #fff;
    color: #ff8c00;
    border: 1px solid #ff8c00;
    padding: 0.6rem 1.2rem 0.6rem 2.5rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
    font-weight: 500;
}

.filter-reset-btn::before {
    content: '↺';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
}

.filter-reset-btn:hover {
    background: #ff8c00;
    border-color: #ff8c00;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(255, 140, 0, 0.3);
}

.filter-tab-group {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.filter-tab-label {
    font-weight: 600;
    color: #555;
    min-width: 120px;
    padding-top: 0.5rem;
    font-size: 0.95rem;
    white-space: nowrap;
}

.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    flex: 1;
}

.filter-tab {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    color: #666;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-tab:hover {
    background: #e9ecef;
    border-color: #ccc;
    color: #333;
}

.filter-tab.active {
    background: #ff8c00;
    border-color: #ff8c00;
    color: white;
    font-weight: 500;
}

.filter-tab.active:hover {
    background: #ff6b35;
    border-color: #ff6b35;
}

/* 统一筛选器按钮样式 - 橙色系 */
.filter-tab[data-type="product-type"] {
    font-weight: 500;
    min-width: 100px;
    text-align: center;
}

/* 统一所有筛选器按钮为橙色系风格 */
.filter-tab[data-type="labi-type"],
.filter-tab[data-type="capacity"] {
    /* 使用默认样式，保持统一 */
    color: inherit;
}

/* 重置筛选按钮容器样式 */
.filter-reset-container {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #f0f0f0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tab-filter-container {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .tab-filter-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .filter-tab-group {
        flex-direction: row;
        gap: 0.5rem;
        align-items: center;
    }
    
    .filter-tab-label {
        min-width: auto;
        padding-top: 0;
        font-size: 0.9rem;
    }

    .filter-tabs {
        justify-content: flex-start;
    }

    .filter-tab {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .filter-reset-container {
        margin-top: 1rem;
        padding-top: 1rem;
    }

    .tab-filter-header h3 {
        font-size: 1.1rem;
    }
}

.product-filter {
    background: #ffffff;
    padding: 2rem;
    border-radius: 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 产品详情页样式 */
.product-detail-content {
    padding: 2rem 0;
}

.product-detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: start;
    min-height: 400px;
    overflow: hidden;
}

.product-image-section,
.product-info-section {
    height: 100%;
    min-height: 300px;
}

/* 响应式布局 - 小屏幕时堆叠排列 */
@media (max-width: 768px) {
    .product-detail-wrapper {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* 产品详情页手机端减小页边距 */
    .product-detail-content .container {
        padding: 0 15px;
    }

    .product-image-section {
        padding: 1rem;
    }

    /* 产品详情页手机端字体自适应缩小 */
    .product-info-section {
        padding: 1rem 0.75rem;
    }

    .product-info-section .product-title,
    :lang(zh-CN) .product-title,
    :lang(en) .product-title {
        font-size: 1.1rem !important;
        text-align: left;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        padding-left: 0;
    }

    .product-info-section .product-desc h3,
    .product-info-section .product-features h3 {
        font-size: 0.9rem !important;
        text-align: left;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        padding-left: 0;
    }

    .technical-parameters h3 {
        font-size: 0.9rem !important;
        text-align: left;
        width: 100%;
        margin-left: 1rem;
        margin-right: 0;
    }

    .product-info-section .product-desc p {
        font-size: 0.8rem !important;
        text-align: left;
        margin-left: 0;
        padding-left: 0;
    }

    .product-info-section .product-features li {
        font-size: 0.8rem !important;
        text-align: left;
        margin-left: 0;
        padding-left: 1rem;
    }

    .product-info-section .product-desc,
    .product-info-section .product-features,
    .product-info-section .product-desc ul {
        text-align: left;
        margin-left: 0;
        padding-left: 0;
    }

    .params-table th,
    .params-table td {
        font-size: 0.6rem !important;
        padding: 0.15rem 0.1rem;
    }

    .contact-prompt p {
        font-size: 0.8rem !important;
    }

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

    /* 中文页面产品主图在手机端自适应缩小 */
    :lang(zh-CN) .main-image {
        height: auto;
        min-height: auto;
        max-height: 300px;
    }

    :lang(zh-CN) .main-image img {
        height: auto;
        max-height: 300px;
    }

    /* 手机端缩略图保持固定比例 */
    .thumbnail-item,
    .thumbnail-gallery:has(.thumbnail-item:nth-child(4)) .thumbnail-item {
        width: 80px !important;
        height: 80px !important;
        min-height: 80px !important;
        flex: 0 0 auto !important;
    }
}

.product-image-section {
    background: #fff;
    padding: 1.5rem;
    border-radius: 0;
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.main-image {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    min-height: 400px;
}

.main-image img {
    width: 100%;
    height: 100%;
    border-radius: 0;
    max-height: 600px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    aspect-ratio: 4/3;
    background: transparent;
}

.thumbnail-gallery {
    display: flex;
    flex-direction: row;
    gap: 0.8rem;
    justify-content: flex-start;
    align-items: center;
}

.thumbnail-item {
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 0.5rem;
    background: #fafafa;
    transition: all 0.3s ease;
    flex: 0 0 auto;
    min-width: 0;
    width: 120px;
    height: 120px;
    min-height: 120px;
}

/* 4张及以上图片时均匀排布 */
.thumbnail-gallery:has(.thumbnail-item:nth-child(4)) {
    justify-content: space-between;
}

.thumbnail-gallery:has(.thumbnail-item:nth-child(4)) .thumbnail-item {
    flex: 1 1 0;
    width: auto;
}

.thumbnail-item:hover {
    border-color: #ff8c00;
    background: #fff8f0;
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    display: block;
}

.product-info-section {
    background: #fff;
    padding: 1.5rem;
    border-radius: 0;
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.product-info-section h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

/* 产品标题 */
.product-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2c3e50;
    line-height: 1.2;
    margin: 0 0 1.5rem 0;
}

/* 英文页面产品标题样式 */
:lang(en) .product-title {
    font-size: 1.5rem;
    text-align: left;
}

/* 中文页面产品标题样式 */
:lang(zh-CN) .product-title {
    text-align: left;
}

/* 产品详细描述 */
.product-desc {
    margin-bottom: 1.5rem;
    margin-top: -2rem;
}

.product-desc h3 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.product-desc p {
    color: #495057;
    line-height: 1.6;
    font-size: 1rem;
    margin: 0;
}

/* 操作图标区域 */
.action-icons {
    display: flex;
    gap: 4rem;
    justify-content: flex-start;
    margin: 3rem 0;
    padding: 2rem;
    min-height: 120px;
    overflow: hidden;
}

.icon-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 1rem;
    min-width: 100px;
    text-decoration: none;
    color: inherit;
}

.icon-item:hover {
    transform: translateY(-2px);
}

.icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    transition: all 0.3s ease;
}

.icon-item:hover .icon-wrapper {
    transform: scale(1.1);
}

.icon-wrapper svg {
    width: 60px;
    height: 60px;
}

.icon-label {
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    text-align: left;
    transition: all 0.3s ease;
}

.icon-item:hover .icon-label {
    color: #EC6608;
}

/* 居中对齐的图标项 */
.icon-item-center {
    align-items: center !important;
}

.icon-item-center .icon-label {
    text-align: center !important;
}

/* 文件大小样式 */
.file-size {
    font-size: 0.8rem;
    color: #999;
    font-weight: normal;
    margin-top: 0.2rem;
}

.icon-item:hover .file-size {
    color: #EC6608;
}

/* 产品特性 */
.product-features {
    margin-bottom: 1.5rem;
    margin-top: -2rem;
}

.product-features h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.product-features ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.product-features li {
    padding: 0.25rem 0 0.25rem 1.2rem;
    position: relative;
    color: #5a6268;
    line-height: 1.3;
}

.product-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.config-section li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #ff8c00;
    font-weight: bold;
}

.config-section li:last-child {
    border-bottom: none;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.5rem 1.2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-primary {
    background: #ff8c00;
    color: white;
}

.btn-primary:hover {
    background: #ff6b35;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.technical-parameters {
    background: #fff;
    padding: 2rem;
    border-radius: 0;
    border: 1px solid #e0e0e0;
    min-height: 200px;
    overflow: hidden;
}

.technical-parameters h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* 产品尺寸示意图样式 */
.dimension-diagram {
    margin-bottom: 2rem;
    text-align: center;
    border: none;
    min-height: 300px;
    overflow: hidden;
}

.dimension-image {
    max-width: 90%;
    height: auto;
    max-height: 350px;
    aspect-ratio: 16/9;
    object-fit: contain;
    margin: 0 auto 1rem auto;
    border: none;
    border-radius: 8px;
    background: transparent;
    padding: 0;
    display: block;
}

.dimension-caption {
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
    margin: 0;
}

.params-table table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
    font-size: 0.85rem;
    table-layout: fixed;
}

.params-table th,
.params-table td {
    padding: 0.4rem 0.3rem;
    text-align: center;
    border: 1px solid #e0e0e0;
    min-width: 60px;
    line-height: 1.1;
    word-wrap: break-word;
}

.params-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #333;
    border-bottom: 2px solid #ff8c00;
    font-size: 0.8rem;
    padding: 0.5rem 0.3rem;
}

.params-table tr:hover {
    background: #f8f9fa;
}

.params-table td:first-child {
    font-weight: 600;
    background: #f8f9fa;
    min-width: 80px;
}

.params-table td:nth-child(2),
.params-table td:nth-child(3) {
    min-width: 70px;
}

.params-table td:nth-child(n+4) {
    min-width: 55px;
}

/* 通用技术参数样式 */
.general-params {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.general-params h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    border-bottom: 2px solid #ff8c00;
    padding-bottom: 0.5rem;
}

.params-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.param-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: #ffffff;
    border-radius: 6px;
    border-left: 4px solid #ff8c00;
}

.param-label {
    font-weight: 600;
    color: #333;
}

.param-value {
    color: #666;
    font-weight: 500;
}

/* 产品链接样式 */
.product-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.filter-group {
    margin-bottom: 1.5rem;
}

.filter-group h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group h4::before {
    content: '▶';
    font-size: 0.8rem;
    color: #ff8c00;
    transition: transform 0.3s ease;
}

.filter-group.active h4::before {
    transform: rotate(90deg);
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.filter-option:hover {
    border-color: #ff8c00;
    transform: translateY(-1px);
}

.filter-option input[type="radio"],
.filter-option input[type="checkbox"] {
    margin: 0;
    width: 16px;
    height: 16px;
}

.filter-option input[type="radio"]:checked + span,
.filter-option input[type="checkbox"]:checked + span {
    color: #ff8c00;
    font-weight: 600;
}

.filter-option span {
    color: #666;
    transition: color 0.3s ease;
}

/* 产品中心 - 二级筛选菜单样式 */
.sub-filter {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #ffffff 100%);
    border: 1px solid #e9ecef;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    display: none;
    position: relative;
    overflow: hidden;
}

.sub-filter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff8c00, #ff6b35, #ff8c00);
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.sub-filter.active {
    display: block;
    animation: slideDownExpand 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes slideDownExpand {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.sub-filter h4 {
    color: #2c3e50;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.sub-filter h4::before {
    content: '⚙';
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1rem;
}

/* 二级筛选选项样式 */
.sub-filter .filter-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.8rem;
}

.sub-filter .filter-option {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem;
    background: #fff;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    min-height: 50px;
    overflow: hidden;
}

.sub-filter .filter-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 140, 0, 0.1), transparent);
    transition: left 0.5s ease;
}

.sub-filter .filter-option:hover::before {
    left: 100%;
}

.sub-filter .filter-option:hover {
    border-color: #ff8c00;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 140, 0, 0.2);
}

.sub-filter .filter-option.selected {
    border-color: #ff8c00;
    background: linear-gradient(135deg, #fff 0%, #fff8f0 100%);
    box-shadow: 0 4px 15px rgba(255, 140, 0, 0.15);
}

.sub-filter .filter-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #ff8c00;
    cursor: pointer;
    position: relative;
}

.sub-filter .filter-option span {
    color: #495057;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    flex: 1;
}

.sub-filter .filter-option:hover span {
    color: #ff8c00;
}

.sub-filter .filter-option.selected span {
    color: #2c3e50;
    font-weight: 600;
}

/* 选择指示器 */
.sub-filter .filter-option.selected::after {
    content: '✓';
    position: absolute;
    top: 8px;
    right: 8px;
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    box-shadow: 0 2px 6px rgba(255, 140, 0, 0.3);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .sub-filter {
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .sub-filter .filter-options {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }
    
    .sub-filter .filter-option {
        padding: 0.8rem;
        min-height: 45px;
    }
    
    .sub-filter .filter-option span {
        font-size: 0.9rem;
    }
    
    .sub-filter h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }
}

@media (max-width: 576px) {
    .sub-filter .filter-options {
        grid-template-columns: 1fr;
    }
    
    .sub-filter .filter-option {
        padding: 0.7rem;
        min-height: 42px;
    }
    
    .sub-filter {
        padding: 0.8rem;
    }
}

.filter-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.filter-btn {
    padding: 0.6rem 1.2rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.1s ease;
    min-width: 100px;
}

.filter-btn.apply {
    background: #ff8c00;
    color: white;
    border-color: #ff8c00;
}

.filter-btn.apply:hover {
    background: #e67e00;
}

.filter-btn.reset {
    background: white;
    color: #666;
    position: relative;
    padding-left: 2.5rem;
}

.filter-btn.reset:hover {
    background: #f5f5f5;
}

.filter-btn.reset::before {
    content: '↩';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #ff8c00;
    font-size: 1.1rem;
    font-weight: bold;
}

/* 结果计数样式 */
.result-count {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #fff8f0 0%, #fff 100%);
    border: 1px solid #ff8c00;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(255, 140, 0, 0.1);
}

.result-count .count-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    font-size: 1rem;
}

.result-count .count-number {
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 700;
    transition: transform 0.2s ease;
}

.result-count .count-text {
    color: #2c3e50;
    font-weight: 600;
}

.result-count .total-info {
    color: #666;
    font-size: 0.9rem;
}

/* 产品列表样式 */
#product-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

/* 响应式设计 - 产品列表 */
@media (max-width: 1200px) {
    #product-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.2rem;
    }
}

@media (max-width: 992px) {
    #product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }
    
    .detail-item {
        padding: 0;
        height: 360px;
        min-height: 360px;
    }
}

@media (max-width: 768px) {
    #product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .detail-item {
        padding: 0;
        height: 360px;
        min-height: 360px;
    }
    
    .detail-item h4 {
        font-size: 1.1rem;
        margin-bottom: 0.6rem;
    }
    
    .detail-item p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .detail-item {
        height: 360px;
    }
    
    .product-image {
        height: 280px;
        min-height: 280px;
        max-height: 280px;
        overflow: hidden;
        display: block;
        background: transparent;
        position: relative;
    }

    .product-image img {
        height: 100%;
        width: 100%;
        object-fit: contain;
        border-radius: 0;
        display: block;
        margin: 0;
        padding: 0;
        position: absolute;
        top: 0;
        left: 0;
    }

    .spec-item {
        font-size: 0.85rem;
    }
    
    .detail-item ul {
        margin-top: 0.8rem;
    }
    
    .detail-item ul li {
        font-size: 0.85rem;
        margin-bottom: 0.2rem;
    }
}

@media (max-width: 576px) {
    #product-list {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .detail-item {
        padding: 0.8rem;
        height: 360px;
    }
    
    .detail-item h4 {
        font-size: 1rem;
    }

    .detail-item p {
        font-size: 0.85rem;
        line-height: 1.4;
    }

    .detail-item ul li {
        font-size: 0.8rem;
    }

    .product-image {
        height: 280px;
        min-height: 280px;
        max-height: 280px;
        overflow: hidden;
        display: block;
        background: transparent;
        position: relative;
    }

    .product-image img {
        height: 100%;
        width: 100%;
        object-fit: contain;
        border-radius: 0;
        display: block;
        margin: 0;
        padding: 0;
        position: absolute;
        top: 0;
        left: 0;
    }

    .spec-item {
        font-size: 0.8rem;
    }
}

@media (max-width: 375px) {
    .detail-item {
        padding: 0;
        height: 360px;
    }
    
    .detail-item h4 {
        font-size: 0.95rem;
    }

    .product-image {
        height: 280px;
        min-height: 280px;
        max-height: 280px;
        overflow: hidden;
        display: block;
        background: transparent;
        flex-shrink: 0;
        position: relative;
    }

    .product-image img {
        height: 100%;
        width: 100%;
        object-fit: contain;
        display: block;
        position: absolute;
        top: 0;
        left: 0;
    }

    .product-info {
        height: 80px;
        min-height: 80px;
        max-height: 80px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0.5rem 0.8rem;
        background: #ffffff;
        border-top: 1px solid #e9ecef;
        box-sizing: border-box;
        overflow: hidden;
        flex-shrink: 0;
    }
    
    .spec-item {
        font-size: 0.8rem;
        line-height: 1.2;
    }
}

/* 产品列表卡片样式 - 统一所有筛选状态下的尺寸 */
.detail-item {
    background: #fff;
    padding: 0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    height: 360px;
    max-width: none;
    margin: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    position: relative;
}

.detail-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px rgba(255, 140, 0, 0.25);
    border-color: #ff8c00;
}

.detail-item:hover .product-image img {
    transform: scale(1.03);
}

.detail-item h4 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.detail-item p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.detail-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.detail-item ul li {
    color: #666;
    margin-bottom: 0.3rem;
    padding-left: 1rem;
    position: relative;
}

.detail-item ul li::before {
    content: '✓';
    color: #ff8c00;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 响应式设计 - 筛选器 */
@media (max-width: 768px) {
    .filter-options {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filter-option {
        width: 100%;
        justify-content: space-between;
    }
    
    .filter-buttons {
        flex-direction: column;
    }
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff8c00;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #adb5bd;
}

.btn-primary {
    background: #ff8c00;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: auto;
    min-width: 100px;
    max-width: 150px;
}

.btn-primary:hover {
    background: #e67e00;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .contact-info-section,
    .contact-form-section {
        padding: 1rem 0;
    }

    .contact-info-section h2,
    .contact-form-section h2 {
        font-size: 1.5rem;
        margin-bottom: 1.2rem;
    }

    .contact-item {
        padding: 0.6rem 0;
    }

    .contact-item h3 {
        font-size: 0.95rem;
        margin-bottom: 0.15rem;
    }

    .contact-item p {
        font-size: 0.85rem;
        line-height: 1.4;
    }

    .form-group input,
    .form-group textarea {
        padding: 0.6rem;
        font-size: 0.9rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .btn-primary {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
        min-width: 90px;
        max-width: 130px;
    }
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 100%);
    color: white;
    padding: 4rem 0 1rem;
    border-top: 4px solid #ff8c00;
}

.footer .container {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    gap: 3rem;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

/* 页脚导航 */
.footer-nav h4 {
    color: #ff8c00;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-menu {
    list-style: none;
}

.footer-menu li {
    margin-bottom: 0.5rem;
}

.footer-menu a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    font-size: 1rem;
    font-weight: 500;
}

.footer-menu a:hover {
    color: #ff8c00;
}

/* 菜单项容器样式 */
.menu-item-container {
    position: relative;
}

.menu-item-container .menu-link {
    display: block;
}

/* 移除强制隐藏菜单项的规则，避免干扰语言切换功能 */
/* .menu-item-container .menu-link[style*="display: none"] {
    display: none !important;
} */

/* 联系方式 */
.footer-contact {
    text-align: left;
    margin-left: -40px;
}

.footer-contact h4 {
    color: #ff8c00;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: left;
}

.contact-info {
    text-align: left;
}

.contact-info {
    text-align: left;
}

.contact-info p {
    color: #bdc3c7;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    line-height: 1.4;
    text-align: left;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    word-break: break-word;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

.contact-info p i {
    color: #ff8c00;
    font-size: 1rem;
    margin-top: 0.1rem;
    min-width: 16px;
    text-align: center;
    flex-shrink: 0;
}

/* 新的联系信息布局样式 */
.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.contact-item .local-icon {
    flex-shrink: 0;
}

.contact-item h5 {
    color: #ff8c00;
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    min-width: 80px;
    flex-shrink: 0;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-left: 2.8rem; /* 图标宽度 + 间距 */
}

.contact-details span {
    color: #bdc3c7;
    font-size: 0.95rem;
    line-height: 1.3;
    word-break: break-word;
    font-weight: 400;
    margin: 0;
    padding: 0.1rem 0;
    display: block;
}

.contact-details .email-item {
    color: #bdc3c7;
    font-size: 0.95rem;
    line-height: 1.2;
    word-break: break-word;
    font-weight: 400;
    margin: 0;
    padding: 0.1rem 0;
    display: block;
    width: 100%;
}

.contact-details .email-item:not(:last-child) {
    margin-bottom: 0.15rem;
}

/* 二维码区域 */
.footer-qrcode h4 {
    color: #ff8c00;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.qrcode-container {
    display: flex;
    gap: 1.5rem;
    justify-content: flex-start;
}

.qrcode-item {
    text-align: center;
}

.qrcode-placeholder {
    width: 100px;
    height: 100px;
    background: #34495e;
    border: 2px solid #ff8c00;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #bdc3c7;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

/* 二维码图片尺寸约束 */
.qrcode-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 0.5rem;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid #ff8c00;
    box-shadow: 0 2px 8px rgba(255, 140, 0, 0.2);
}

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

.qrcode-item p {
    color: #bdc3c7;
    font-size: 0.85rem;
    margin: 0;
}

/* 认证标志样式 */
.certifications-container {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: center;
}

.cert-item {
    text-align: center;
    transition: all 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-3px);
}

.cert-badge {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    transition: all 0.3s ease;
}

.cert-badge:hover {
    transform: scale(1.05);
}

.cert-item p {
    color: #bdc3c7;
    font-size: 0.9rem;
    margin: 0;
    font-weight: 600;
    transition: color 0.3s ease;
}

.cert-item:hover p {
    color: #fff;
}

/* 移动端认证标志优化 */
@media (max-width: 768px) {
    .certifications-container {
        gap: 1.5rem;
    }
    
    .cert-badge {
        width: 65px;
        height: 65px;
    }
    
    .cert-item p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .certifications-container {
        gap: 1rem;
    }
    
    .cert-badge {
        width: 55px;
        height: 55px;
    }
    
    .cert-item p {
        font-size: 0.8rem;
    }
}

/* 移动端二维码优化 */
@media (max-width: 768px) {
    .qrcode-container {
        gap: 1rem;
        justify-content: center;
    }
    
    .qrcode-image {
        width: 90px;
        height: 90px;
    }
    
    .qrcode-item p {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .qrcode-container {
        gap: 0.8rem;
        flex-wrap: wrap;
    }
    
    .qrcode-image {
        width: 80px;
        height: 80px;
    }
    
    .qrcode-item p {
        font-size: 0.75rem;
    }
}

/* 备案信息 */
.footer-legal {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    margin-top: 1rem;
}

.footer-legal p {
    color: #95a5a6;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-legal p:last-child {
    margin-bottom: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏容器优化 */
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0 1rem;
        gap: 0.5rem;
        min-height: 70px;
    }
    
    /* 导航菜单优化 */
    .nav-menu {
        flex-direction: column;
        gap: 0;
        position: fixed;
        top: 70px;
        right: 0;
        left: auto;
        width: 50%;
        max-height: calc(100vh - 90px);
        background: #ffffff;
        padding: 1rem 0;
        box-shadow: -2px 0 16px rgba(0, 0, 0, 0.1);
        border-left: 2px solid #ff8c00;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        display: flex;
        z-index: 1000;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }
    
    /* 确保导航栏在页面加载时始终可见 */
    .navbar {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .nav-menu > li {
        margin: 0;
        width: 100%;
    }
    
    .nav-menu > li > a {
        display: block;
        font-size: 0.95rem;
        padding: 0.9rem 1.5rem;
        border-bottom: 1px solid #f0f0f0;
        text-align: left;
        background: #ffffff;
        color: #333;
        transition: all 0.2s ease;
    }
    
    .nav-menu > li > a:hover {
        background: transparent !important;
        color: #ff8c00;
    }
    
    .nav-menu > li:last-child > a {
        border-bottom: none;
    }
    
    /* 移动端菜单切换按钮 */
    .menu-toggle {
        display: block;
        order: 2;
    }
    
    /* 语言切换器优化 */
    .language-switcher {
        position: static;
        margin-left: auto;
        margin-right: 0;
        order: 1;
    }
    
    .lang-btn {
        padding: 4px 0;
        font-size: 13px;
        width: 44px;
        height: 28px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .flag-cn::before {
        font-size: 2px;
        left: 1px;
        top: 1px;
    }
    
    .flag-cn::after {
        font-size: 1px;
        left: 3px;
        top: 5px;
    }
    
    .flag-us::after {
        font-size: 5px;
        top: 1px;
        left: 1px;
    }
    
    /* 导航Logo优化 */
    .nav-logo {
        order: 0;
        flex-shrink: 0;
    }
    
    .nav-logo .logo {
        width: auto;
        height: 42px;
    }
    
    /* 横幅区域移动端优化 */
    .hero {
        padding: 0;
        min-height: auto;
        height: auto;
        aspect-ratio: 16 / 9;
        max-height: 100vh;
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 70px;
    }

    .hero-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -1;
    }

    .hero-banner {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .banner-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        top: 0;
        left: 0;
    }
    
    .hero-content {
        position: relative;
        transform: none;
        max-width: 100%;
        padding: 0 1.5rem;
        text-align: center;
        bottom: auto;
        left: auto;
        z-index: 2;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 16px;
        margin-bottom: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
        text-align: center;
        margin-bottom: 1rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        line-height: 1.5;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.8rem;
        margin-bottom: 2.5rem;
    }
    
    .cta-button {
        padding: 14px 25px;
        font-size: 1rem;
        width: 100%;
        max-width: 280px;
        min-height: 48px; /* 触摸友好的最小高度 */
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    .cta-button:active {
        transform: scale(0.98); /* 触摸反馈效果 */
    }
    
    .hero-stats {
        gap: 1.5rem;
        margin-top: 2rem;
    }
    
    .stat-item {
        min-width: 100px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .hero-scroll {
        bottom: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about h3 {
        font-size: 1.6rem;
        margin-top: 1.5rem;
        margin-bottom: 2rem;
    }

    .about-text p {
        font-size: 0.9rem !important;
        line-height: 1.6;
        margin: 0 0 1.5rem 0;
        text-align: left;
    }

    .learn-more-btn {
        align-self: flex-start;
        margin-left: 0;
    }

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

    /* 页脚响应式 */
    .footer .container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .qrcode-container {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-nav,
    .footer-contact,
    .footer-qrcode {
        text-align: center;
    }
    
    .footer-menu {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .footer-menu li {
        margin-bottom: 0;
    }
    
    /* 移动端隐藏联系我们区域 */
    .footer-contact {
        display: none;
    }

    .footer-nav h4,
    .footer-qrcode h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .footer-menu a {
        font-size: 0.9rem;
    }

    .footer-legal p {
        font-size: 0.8rem;
    }

    .action-icons {
        gap: 2rem;
        margin: 2rem 0;
        padding: 1.5rem;
    }

    .icon-wrapper {
        width: 50px;
        height: 50px;
    }

    .icon-wrapper svg {
        width: 50px;
        height: 50px;
    }

    .icon-label {
        font-size: 0.9rem;
    }
}

/* 响应式设计 - 576px断点 */
@media (max-width: 576px) {
    .nav-container {
        padding: 0 0.8rem;
        min-height: 65px;
    }

    .nav-logo h1 {
        font-size: 1.1rem;
    }

    .nav-logo .logo {
        width: auto;
        height: 38px;
    }
    
    .menu-toggle {
        font-size: 1.3rem;
        padding: 0.4rem;
    }
    
    .lang-btn {
        padding: 5px 10px;
        font-size: 13px;
        min-width: 45px;
    }
    
    .nav-menu a {
        font-size: 0.95rem;
        padding: 0.5rem 0;
    }
    
    /* 横幅区域576px优化 */
    .hero {
        padding: 0;
        min-height: auto;
        height: auto;
        aspect-ratio: 4 / 3;
        margin-top: 60px;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-stats {
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .stat-item {
        min-width: 90px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    /* 联系我们区域576px优化 */
    .footer-contact {
        margin-left: 0;
        padding: 0 1rem;
    }
    
    .footer-contact h4 {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }
    
    .contact-info p {
        font-size: 0.9rem;
        line-height: 1.5;
        margin-bottom: 0.7rem;
    }
    
    .contact-info p i {
        font-size: 0.9rem;
        min-width: 14px;
    }
}

/* 响应式设计 - 480px断点 */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 0.6rem;
        min-height: 60px;
    }

    .nav-logo h1 {
        font-size: 1rem;
        display: none; /* 在超小屏幕上隐藏公司名称 */
    }

    .nav-logo .logo {
        width: auto;
        height: 34px;
    }

    .nav-menu {
        font-size: 1.2rem;
        padding: 0.3rem;
    }
    
    .language-switcher {
        margin-right: 0.5rem;
    }
    
    .lang-btn {
        padding: 4px 8px;
        font-size: 12px;
        min-width: 40px;
    }
    
    .nav-menu {
        padding: 0.8rem;
    }
    
    .nav-menu a {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }
    
    /* 横幅区域480px优化 */
    .hero {
        padding: 0;
        min-height: auto;
        height: auto;
        aspect-ratio: 1 / 1;
        margin-top: 50px;
    }
    
    .hero-content {
        padding: 0 0.8rem;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: 5px 12px;
        margin-bottom: 1rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 0.6rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1.2rem;
        line-height: 1.4;
    }
    
    .hero-buttons {
        gap: 0.6rem;
        margin-bottom: 2rem;
    }
    
    .cta-button {
        padding: 12px 20px;
        font-size: 0.9rem;
        max-width: 240px;
    }
    
    .hero-stats {
        gap: 0.8rem;
        margin-top: 1.2rem;
    }
    
    .stat-item {
        min-width: 80px;
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
        letter-spacing: 0.5px;
    }
    
    .hero-scroll {
        bottom: 15px;
    }
    
    .scroll-indicator {
        font-size: 0.7rem;
    }
    
    .scroll-arrow {
        font-size: 1rem;
    }
    
    /* 联系我们区域480px优化 */
    .footer-contact {
        padding: 0 0.8rem;
        margin-bottom: 1rem;
    }
    
    .footer-contact h4 {
        font-size: 1rem;
        margin-bottom: 0.7rem;
    }
    
    .contact-info p {
        font-size: 0.85rem;
        line-height: 1.4;
        margin-bottom: 0.6rem;
        word-break: break-word;
    }
    
    .contact-info p i {
        font-size: 0.85rem;
        min-width: 13px;
    }
    
    .footer .container {
        padding: 0 1rem;
    }
}

/* 响应式设计 - 375px断点 */
    @media (max-width: 375px) {
        .footer-contact {
            padding: 0 0.6rem;
            margin-bottom: 0.8rem;
        }
        
        .footer-contact h4 {
            font-size: 0.95rem;
            margin-bottom: 0.6rem;
        }
        
        .contact-info p {
            font-size: 0.8rem;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }
        
        .contact-info p i {
            font-size: 0.8rem;
            min-width: 12px;
        }
    
    .footer .container {
        padding: 0 0.8rem;
        gap: 1rem;
    }
    
    .footer-nav,
    .footer-contact,
    .footer-qrcode {
        margin-bottom: 1.5rem;
    }
    
    .qrcode-container {
        gap: 1rem;
    }
    
    .qrcode-placeholder {
        width: 80px;
        height: 80px;
        font-size: 0.7rem;
    }
    
    .qrcode-item p {
        font-size: 0.75rem;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

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

/* 放大图片模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease-in;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 80%;
    max-height: 70%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    transition: color 0.3s ease;
}

.close:hover {
    color: #ff8c00;
}

/* 导航按钮 */
.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    font-size: 30px;
    padding: 15px 20px;
    cursor: pointer;
    z-index: 1001;
    transition: all 0.3s ease;
    border-radius: 5px;
}

.nav-btn:hover {
    background: rgba(255, 140, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* 缩略图点击效果 */
.thumbnail-item {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.thumbnail-item:hover {
    transform: scale(1.05);
}

/* 合作客户区域 */
.clients {
    padding: 5rem 0;
    background: white;
    overflow: hidden;
}

.clients h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

.clients-scroll-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    mask-image: linear-gradient(
        to right,
        transparent,
        black 20%,
        black 80%,
        transparent
    );
}

.clients-track {
    display: flex;
    animation: scroll 30s linear infinite;
    gap: 2rem;
    padding: 0 1rem;
}

.client-logo {
    flex-shrink: 0;
    width: 200px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.3s ease;
}

.client-logo:hover {
    transform: translateY(-5px);
}

.client-logo img {
    max-width: 160px;
    max-height: 80px;
    object-fit: contain;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-200px * 6 - 2rem * 6));
    }
}

/* 响应式设计 - 客户区域 */
@media (max-width: 768px) {
    .clients {
        padding: 3rem 0;
    }

    .clients h3 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }
    
    .client-logo {
        width: 160px;
        height: 80px;
    }
    
    .client-logo img {
        max-width: 130px;
        max-height: 60px;
    }
    
    @keyframes scroll {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(calc(-200px * 6 - 2rem * 6));
        }
    }
}

/* 产品中心 */
.products {
    padding: 60px 0;
    background: #ffffff;
}

.products h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

.product-categories {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.category-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.category-item:nth-child(odd) {
    flex-direction: row;
}

.category-item:nth-child(even) {
    flex-direction: row-reverse;
}

.category-image {
    flex: 0 0 500px;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.category-info {
    flex: 1;
    padding: 0 2rem;
    margin-top: 20px;
}

.category-info h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.category-info p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.product-btn {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(45deg, #ff8c00, #ff6b35);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(255, 140, 0, 0.3);
}

.product-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 140, 0, 0.4);
    background: linear-gradient(45deg, #ff6b35, #ff8c00);
}

/* 响应式设计 - 产品中心 */
@media (max-width: 768px) {
    .products {
        padding: 40px 0;
    }

    .products h3 {
        font-size: 1.6rem;
        margin-top: 1.5rem;
        margin-bottom: 2rem;
    }

    .product-categories {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .category-item {
        flex-direction: column !important;
        margin-bottom: 1.5rem;
    }

    .category-image {
        flex: 0 0 auto;
        height: 250px;
        width: 100%;
        margin-bottom: 1rem;
    }

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

    .category-info {
        padding: 0 1rem;
        text-align: left;
    }

    .category-info h4 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
        text-align: left;
    }

    .category-info p {
        font-size: 0.9rem;
        line-height: 1.5;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .about h3 {
        font-size: 1.4rem;
        margin-top: 1rem;
        margin-bottom: 1.5rem;
    }

    .about-text p {
        font-size: 0.85rem !important;
        line-height: 1.5;
        text-align: left;
    }

    .learn-more-btn {
        align-self: flex-start;
        margin-left: 0;
        padding: 6px 16px;
        font-size: 0.85rem;
    }

    .products h3 {
        font-size: 1.4rem;
    }

    .category-item {
        margin-bottom: 1rem;
    }

    .category-info h4 {
        font-size: 1.1rem;
        text-align: left;
    }

    .category-info p {
        font-size: 0.85rem;
        text-align: left;
    }

    .clients h3 {
        font-size: 1.4rem;
    }

    .advantages-section h3 {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }

    .advantage-card {
        padding: 1rem;
    }

    .advantage-icon {
        font-size: 2rem;
    }

    .advantage-card h4 {
        font-size: 1rem;
    }

    .advantage-card p {
        font-size: 0.85rem;
        text-align: left;
    }
}

@keyframes scroll-left {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-120px * 6 - 2rem * 6));
    }
}

/* 全球业务网络 - 简化版 */
.overseas {
    background-color: #ffffff;
    padding: 60px 0;
}

.overseas .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.overseas h3 {
    font-size: 2.5rem;
    color: #2c3e50;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 2rem;
    text-align: center;
}

.overseas-simple {
    display: flex;
    justify-content: center;
    gap: 5rem;
    align-items: center;
    margin-bottom: 0;
}

.overseas-item {
    text-align: center;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.overseas-number {
    font-size: 3.2rem;
    font-weight: 700;
    color: #ff8c00;
    margin-bottom: 0.3rem;
    line-height: 1;
    font-family: 'Arial', 'Helvetica Neue', 'Helvetica', sans-serif;
    text-align: center;
    width: 100%;
    letter-spacing: -0.02em;
}

.overseas-label {
    font-size: 0.95rem;
    color: #555;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0.2px;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    text-align: center;
    width: 100%;
}

.overseas-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

.overseas-item {
    text-align: left;
    padding: 0;
    margin: 0;
}

.overseas-item h4 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
    padding: 0;
}

.overseas-item p {
    font-size: 1rem;
    color: #666;
    line-height: 1.5;
    margin-bottom: 0;
    padding: 0;
    text-align: left;
}

/* 响应式设计 - 海外业务 */
@media (max-width: 768px) {
    .overseas {
        padding: 40px 0;
    }

    .overseas h3 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
        line-height: 1.2;
    }

    .overseas-simple {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
        margin-bottom: 0;
        padding: 0 0.5rem;
    }

    .overseas-item {
        text-align: center;
        padding: 1rem 0.5rem;
        background: rgba(255, 255, 255, 0.9);
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        width: 100%;
        max-width: none;
        margin: 0;
    }

    .overseas-item:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    }

    .overseas-number {
        font-size: 1.8rem;
        margin-bottom: 0.4rem;
        line-height: 1;
    }

    .overseas-label {
        font-size: 0.75rem;
        line-height: 1.2;
        font-weight: 500;
    }
}

@media (max-width: 576px) {
    .overseas {
        padding: 30px 0;
    }

    .overseas h3 {
        font-size: 1.4rem;
        margin-bottom: 1.2rem;
    }

    .overseas-simple {
        gap: 0.6rem;
        padding: 0 0.4rem;
    }

    .overseas-item {
        padding: 0.8rem 0.4rem;
        border-radius: 8px;
    }

    .overseas-number {
        font-size: 1.6rem;
        margin-bottom: 0.3rem;
    }

    .overseas-label {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .overseas {
        padding: 25px 0;
    }

    .overseas h3 {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .overseas-simple {
        gap: 0.5rem;
        padding: 0 0.3rem;
    }

    .overseas-item {
        padding: 0.7rem 0.3rem;
        border-radius: 6px;
    }

    .overseas-number {
        font-size: 1.4rem;
        margin-bottom: 0.25rem;
    }

    .overseas-label {
        font-size: 0.65rem;
        line-height: 1.1;
    }
}

@media (max-width: 375px) {
    .overseas {
        padding: 20px 0;
    }

    .overseas h3 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
    }

    .overseas-simple {
        gap: 0.4rem;
        padding: 0 0.25rem;
    }

    .overseas-item {
        padding: 0.6rem 0.25rem;
        border-radius: 5px;
    }

    .overseas-number {
        font-size: 1.2rem;
        margin-bottom: 0.2rem;
    }

    .overseas-label {
        font-size: 0.6rem;
    }
    
    .overseas-item {
        padding: 1rem 0.8rem;
        max-width: 200px;
        border-radius: 10px;
    }
    
    .overseas-number {
        font-size: 2.2rem;
        margin-bottom: 0.5rem;
    }
    
    .overseas-label {
        font-size: 0.9rem;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: transparent;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
}

.back-to-top svg {
    width: 40px;
    height: 40px;
    stroke: #ff8c00;
    stroke-width: 3;
    fill: none;
    transition: all 0.3s ease;
}

.back-to-top:hover svg {
    stroke: #ff6b35;
    stroke-width: 4;
}

/* 响应式设计 - 返回顶部按钮 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    
    .back-to-top svg {
        width: 35px;
        height: 35px;
        stroke-width: 3;
    }
}

@media (max-width: 480px) {
    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 30px;
        height: 30px;
        stroke-width: 2.5;
    }
}

/* 关于我们页面样式 */
.page-banner {
    position: relative;
    height: 400px;
    overflow: hidden;
    margin-top: 80px;
}

.page-banner .banner-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
}

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

.page-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 黑色透明蒙版 */
    background: rgba(0, 0, 0, 0.4);
}

.page-banner .banner-content {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
    text-align: center;
    color: white;
    z-index: 2;
}

.page-banner h1 {
    font-size: 3.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.breadcrumb a {
    color: #ff8c00;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #ff6b35;
}

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: #ccc;
}

.breadcrumb .current {
    color: #fff;
    font-weight: 600;
}

.about-page-content {
    padding: 80px 0;
    margin-top: 0px;
}

.about-intro {
    text-align: center;
    margin-bottom: 40px;
}

.about-intro h2 {
    font-size: 2.8rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-weight: 600;
}

.about-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #666;
    max-width: 1000px;
    margin: -10px auto 0 auto;
    text-align: left;
}

.about-details {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-bottom: 60px;
    justify-content: center;
}

.product-image {
    height: 280px;
    min-height: 280px;
    max-height: 280px;
    overflow: hidden;
    display: block;
    background: transparent;
    position: relative;
    flex-shrink: 0;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 0;
    display: block;
    margin: 0;
    padding: 0;
    position: absolute;
    top: 0;
    left: 0;
    transition: transform 0.4s ease;
}

/* 中文页面产品图片铺满容器 */
:lang(zh-CN) .product-image img {
    object-fit: cover;
}

/* 中文页面产品图片容器高度 */
:lang(zh-CN) .product-image {
    height: 240px;
    min-height: 240px;
    max-height: 240px;
}

/* 中文页面产品主图填满容器 */
:lang(zh-CN) .main-image img {
    object-fit: cover;
}

/* 图片加载失败时的占位符 */
.product-image img:not([src]),
.product-image img[src=""],
.product-image img[src="undefined"],
.product-image img[src="null"],
.product-image img.placeholder-image {
    opacity: 0;
}

.product-image::before {
    content: "📷";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #ccc;
    background: #f8f9fa;
    z-index: 1;
    display: none;
}

.product-image:has(img:not([src]))::before,
.product-image:has(img[src=""])::before,
.product-image:has(img[src="undefined"])::before,
.product-image:has(img[src="null"])::before,
.product-image:has(img.placeholder-image)::before {
    display: flex;
}

/* 占位图样式优化 - 与实际图片保持一致 */
.product-image img.placeholder-image {
    object-fit: cover !important;
    background: #f8f9fa;
    width: 100% !important;
    height: 100% !important;
}

/* 确保占位图SVG正确显示 */
.product-image img.placeholder-image[src*=".svg"] {
    background: #f8f9fa;
}

/* 占位图容器样式调整 */
.product-image:has(.placeholder-image) {
    background: #f8f9fa;
    min-height: 200px;
}

/* 图片加载错误时的视觉反馈 */
.product-image img.image-error {
    border: 2px dashed #ff6b6b;
    background: #fff5f5;
}

/* 确保占位图与产品图片具有相同的显示比例 */
.product-image:has(img.placeholder-image)::before {
    content: none !important; /* 移除相机图标，使用SVG内容 */
}

.product-info {
    height: 80px;
    min-height: 80px;
    max-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background: #ffffff;
    border-top: 1px solid #e9ecef;
    box-sizing: border-box;
    overflow: hidden;
    flex-shrink: 0;
}

.product-title {
    font-size: 1rem;
    color: #2c3e50;
    margin: 0;
    font-weight: 600;
    text-align: center;
    line-height: 1.3;
    word-wrap: break-word;
    white-space: normal;
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: auto;
    width: 100%;
    max-height: 100%;
    overflow: hidden;
}

.spec-item {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
    text-align: center;
    word-wrap: break-word;
    white-space: normal;
    padding: 0.1rem 0;
    font-family: Arial, sans-serif;
}

/* 英文页面产品规格样式 */
:lang(en) .spec-item {
    font-size: 0.8rem;
    text-align: left;
    font-weight: 600;
}

/* 中文页面产品规格样式 */
:lang(zh-CN) .spec-item {
    text-align: left;
}

:lang(zh-CN) .product-specs {
    margin-top: 10px;
}

/* 鼠标悬停时产品规格字体变橙色 */
.detail-item:hover .spec-item {
    color: #ff8c00;
}

/* 产品卡片响应式布局 - 已合并到上方样式定义 */

/* 响应式调整 */
@media (max-width: 768px) {
    .about-details {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .detail-item {
        height: 360px;
        min-height: 360px;
        padding: 0;
        flex-direction: column;
    }

    /* 统一产品图片区域样式 */
    .product-image {
        height: 280px;
        min-height: 280px;
        max-height: 280px;
        overflow: hidden;
        display: block;
        background: transparent;
        position: relative;
    }

    /* 统一产品信息区域样式 */
    .product-info {
        height: 80px;
        min-height: 80px;
        max-height: 80px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0.5rem 1rem;
        background: #ffffff;
        border-top: 1px solid #e9ecef;
        box-sizing: border-box;
        overflow: hidden;
        flex-shrink: 0;
    }
    
    .product-specs {
        gap: 0.4rem;
        width: 100%;
        max-height: none;
        overflow: visible;
    }
    
    .spec-item {
        font-size: 0.95rem;
        line-height: 1.5;
        text-align: left;
        word-wrap: break-word;
        white-space: normal;
        padding: 0.1rem 0;
    }
}

@media (max-width: 480px) {
    .detail-item {
        height: 360px;
        min-height: 360px;
        flex-direction: column;
    }
    
    .product-image {
        height: 280px;
        min-height: 280px;
        max-height: 280px;
    }
    
    .product-info {
        height: 80px;
        min-height: 80px;
        max-height: 80px;
        padding: 0.5rem 1rem;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        flex-shrink: 0;
    }
    
    .product-specs {
        gap: 0.4rem;
        width: 100%;
        max-height: none;
        overflow: visible;
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    
    .spec-item {
        font-size: 0.85rem;
        line-height: 1.3;
        word-wrap: break-word;
        white-space: normal;
        padding: 0.1rem 0;
        text-align: left;
    }
}

.company-stats {
    text-align: center;
    margin-bottom: 60px;
}

.company-stats h2 {
    font-size: 2.8rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.stats-grid .stat-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    color: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.stats-grid .stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stats-grid .stat-label {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.9;
}

.about-image-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 60px;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* 新的关于我们页面布局 */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 40px;
}

.about-text {
    padding-right: 2rem;
}

.about-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-weight: 600;
    border-bottom: 3px solid #ff8c00;
    padding-bottom: 1rem;
    text-align: left;
}

.about-text h3 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin: 2.5rem 0 1rem 0;
    font-weight: 600;
    text-align: left;
}

/* 关于我们页面段落样式 - 英文页面字体稍小 */
html[lang="en"] .about-page-content .about-text p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1.5rem;
    text-align: left;
}

/* 中文页面保持原有字体大小 */
html[lang="zh"] .about-page-content .about-text p,
.about-page-content .about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1.5rem;
    text-align: left;
}

.about-text p strong {
    color: #2c3e50;
    font-weight: 600;
}

.about-image {
    position: sticky;
    top: 100px;
}

.about-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: 0;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    /* 锁定显示比例，删除悬停特效 */
}

/* 核心优势卡片布局 - 新布局 */
.advantages-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #e9ecef;
}

.advantages-section h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 40px;
    font-weight: 600;
}

/* 核心优势卡片布局 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.advantage-card {
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: #ff8c00;
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.advantage-card h4 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.advantage-card p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-text {
        padding-right: 0;
    }
    
    .about-image {
        position: static;
        order: -1;
    }
    
    .about-image img {
        height: 300px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .advantages-section h3 {
        font-size: 1.6rem;
        margin-bottom: 30px;
    }

    .advantage-card {
        padding: 1.5rem;
    }

    .advantage-icon {
        font-size: 2.5rem;
    }

    .advantage-card h4 {
        font-size: 1.1rem;
    }

    .advantage-card p {
        font-size: 0.9rem;
        text-align: left;
    }
}

.about-text h3 {
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
}

/* 响应式设计 - 关于我们页面 */
@media (max-width: 768px) {
    .page-banner {
        height: 300px;
    }
    
    .page-banner h1 {
        font-size: 1.5rem;
    }

    .breadcrumb {
        font-size: 0.85rem;
    }

    .about-intro h2 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .about-intro p {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .about-text h2 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .about-details {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .about-image-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-image img {
        height: 300px;
    }
}

/* 行业应用区域样式 */
.section {
    margin-bottom: 4rem;
    margin-top: 3rem;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 0;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* 应用场景网格样式 - 完整样式已移至 watermark.css */
.application-item {
    text-align: center;
    padding: 1.5rem 1rem 1.5rem 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

/* 产品详情页基础样式 - 水印样式已移至 watermark.css */

/* 移动端适配 - 水印样式已移至 watermark.css */

/* 移除应用场景卡片的鼠标悬停效果 */
/* .application-item:hover {
    border-color: #3498db;
    background-color: #ffffff;
} */

.application-image {
    width: 100%;
    height: 0;
    padding-bottom: 100%; /* 1:1 比例 */
    margin: 0 0 1.5rem 0;
    border-radius: 0;
    overflow: hidden;
    background-color: #f1f1f1;
    border: none;
    box-shadow: none;
    position: relative;
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.application-content h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.application-content p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
    text-align: left;
}

/* 小型图文卡片样式 */
.small-cards-section {
    margin-top: 3rem;
    padding: 2rem 0;
    background: #ffffff;
}

.small-cards-section h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-weight: 600;
}

.small-cards-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.small-card {
    background: white;
    border-radius: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.small-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.small-card-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    flex-shrink: 0;
}

.small-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.small-card-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.small-card h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-weight: 600;
    line-height: 1.3;
}

.small-card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
    margin: 0;
}

/* 响应式设计 - 行业应用网格 */
@media (max-width: 1200px) {
    .applications-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 992px) {
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .application-item {
        padding: 1.5rem 1rem 1.5rem 1rem;
    }
    
    .application-image {
        width: 100%;
        height: 0;
        padding-bottom: 100%;
        margin-bottom: 1.2rem;
    }
    
    .application-content h3 {
        font-size: 1.4rem;
    }
    
    .application-content p {
        font-size: 1.05rem;
    }
}

@media (max-width: 768px) {
    .applications-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .application-item {
        padding: 1.5rem 1rem 1.2rem 1rem;
    }

    .application-image {
        width: 100%;
        height: 0;
        padding-bottom: 100%;
        margin-bottom: 1rem;
    }

    .application-content h3 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }

    .application-content p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
}

/* 响应式设计 - 小型图文卡片 */
@media (max-width: 992px) {
    .small-cards-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }
}

@media (max-width: 576px) {
    .small-cards-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .small-cards-section h3 {
        font-size: 1.8rem;
    }
    
    .small-card-image {
        height: 160px;
    }
    
    .small-card-content {
        padding: 0.8rem;
    }
    
    .small-card h4 {
        font-size: 1rem;
    }
    
    .small-card p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .page-banner {
        height: 250px;
    }

    .page-banner h1 {
        font-size: 1.3rem !important;
    }

    .breadcrumb {
        font-size: 0.8rem !important;
    }

    .application-content h3 {
        font-size: 1.1rem;
        margin-bottom: 0.6rem;
    }

    .application-content p {
        font-size: 0.85rem;
        line-height: 1.4;
    }

    .application-item {
        padding: 1rem 0.8rem 1rem 0.8rem;
    }

    .contact-info-section h2,
    .contact-form-section h2 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    .contact-item {
        padding: 0.5rem 0;
    }

    .contact-item h3 {
        font-size: 0.9rem;
    }

    .contact-item p {
        font-size: 0.8rem;
        line-height: 1.3;
    }

    .form-group label {
        font-size: 0.85rem;
    }

    .form-group input,
    .form-group textarea {
        font-size: 0.85rem;
        padding: 0.5rem;
    }

    .btn-primary {
        font-size: 0.8rem;
        padding: 0.5rem 0.8rem;
    }

    .footer-nav h4,
    .footer-qrcode h4 {
        font-size: 0.9rem;
        margin-bottom: 0.6rem;
    }

    .footer-menu a {
        font-size: 0.85rem;
    }

    .footer-legal p {
        font-size: 0.75rem;
    }

    .action-icons {
        gap: 1.5rem;
        margin: 1.5rem 0;
        padding: 1rem;
    }

    .icon-wrapper {
        width: 45px;
        height: 45px;
    }

    .icon-wrapper svg {
        width: 45px;
        height: 45px;
    }

    .icon-label {
        font-size: 0.85rem;
    }
}

/* 后台管理系统导航栏样式 */
.sidebar {
    width: 280px;
    background: #ffffff;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
    border-right: 1px solid #e9ecef;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logo {
    font-size: 1.3rem;
    font-weight: 600;
    color: #007bff;
    text-align: center;
}

.nav-menu {
    padding: 0;
    margin: 0;
    list-style: none;
}

.nav-section {
    margin-bottom: 0;
    border-bottom: 1px solid #e9ecef;
}

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

.nav-section-title {
    padding: 12px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #495057;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    font-weight: 500;
}

.nav-item:hover {
    background: transparent !important;
    color: #ff8c00;
    border-left-color: transparent !important;
}

.nav-item.active {
    background: #e3f2fd;
    color: #007bff;
    border-left-color: #007bff;
    font-weight: 600;
}

.nav-icon {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.nav-item span:last-child {
    flex: 1;
}

/* 移动端导航栏响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        transform: translateX(-100%);
        z-index: 1100;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .admin-container {
        margin-left: 0;
    }
    
    .admin-main-content {
        margin-left: 0;
    }
}

/* 顶部导航栏样式 */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid #e9ecef;
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 24px;
}

.navbar-header {
    display: flex;
    align-items: center;
    margin-right: 40px;
}

.navbar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #007bff;
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    align-items: center;
    flex: 1;
    height: 100%;
}

.navbar-section {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.navbar-section:not(:last-child) {
    margin-right: 0;
}

.navbar-item {
    display: flex;
    align-items: center;
    padding: 0 20px;
    height: 100%;
    color: #495057;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-bottom: 3px solid transparent;
}

.navbar-item:hover {
    background: #f8f9fa;
    color: #007bff;
    border-bottom-color: #007bff;
}

.navbar-item.active {
    background: #e3f2fd;
    color: #007bff;
    border-bottom-color: #007bff;
    font-weight: 600;
}

.navbar-icon {
    margin-right: 8px;
    font-size: 1.1rem;
}

.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-arrow {
    margin-left: 6px;
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    border: 1px solid #e9ecef;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: #495057;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.dropdown-item:hover {
    background: #f8f9fa;
    color: #007bff;
    border-left-color: #007bff;
}

.dropdown-item.active {
    background: #e3f2fd;
    color: #007bff;
    border-left-color: #007bff;
    font-weight: 600;
}

.dropdown-item .navbar-icon {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* 导航栏滚动条样式 */
.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 2px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 确保主要内容区域与导航栏正确对齐 */
.admin-container {
    margin-top: 64px;
    margin-left: 0;
}

.admin-main-content {
    margin-left: 0;
}

@media (max-width: 768px) {
    .top-navbar {
        padding: 0 16px;
        height: 56px;
    }
    
    .navbar-logo {
        font-size: 1.3rem;
    }
    
    .navbar-item {
        padding: 0 12px;
        font-size: 0.9rem;
    }
    
    .navbar-icon {
        margin-right: 6px;
        font-size: 1rem;
    }
    
    .dropdown-menu {
        min-width: 180px;
    }
    
    .admin-container {
        margin-top: 56px;
    }
    
    .about-intro h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .about-intro p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .about-text h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid .stat-number {
        font-size: 2.5rem;
    }
}

/* 移动端产品尺寸示意图适配 */
@media (max-width: 768px) {
    .technical-parameters {
        padding: 1.5rem 0.5rem;
    }

    .dimension-diagram {
        margin-bottom: 1rem;
        min-height: auto;
        width: 100%;
    }

    .dimension-image {
        max-width: 100%;
        width: 100%;
        max-height: none;
        height: auto;
        aspect-ratio: auto;
        margin: 0;
    }
}

@media (max-width: 480px) {
    .technical-parameters {
        padding: 1rem 0.25rem;
    }

    .dimension-image {
        max-width: 100%;
        width: 100%;
    }
}