.support-container {
        margin: 0 auto;
        display: flex;
        min-height: 70vh;
    }
.support-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

    /* 左侧目录栏样式 - 桌面端 */
    .support-sidebar {
        width: 400px;
        padding: 60px 20px;
        border-right: 1px solid #ddd;
        position: sticky;
        top: 0;
        min-height: 70vh;
        overflow-y: auto;
        background: #fff; /* 添加背景色 */
    }

    .support-sidebar .toc-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .support-sidebar .toc-item {
        margin-bottom: 20px;
        position: relative;
    }

    /* 左侧竖线 - 默认隐藏 */
    .support-sidebar .toc-item::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 4px;
        background-color: #ba372a;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    /* 链接样式 */
    .support-sidebar .toc-item a {
        display: block;
        color: #333;
        text-decoration: none;
        padding: 12px 20px;
        cursor: pointer;
        background-color: transparent;
        border-radius: 0 8px 8px 0;
        transition: all 0.3s ease;
        position: relative;
        margin-left: 20px;
    }

    /* 鼠标悬停效果 */
    .support-sidebar .toc-item:hover a {
        background-color: rgba(186, 55, 42, 0.05);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        transform: translateX(5px);
    }

    .support-sidebar .toc-item:hover::before {
        opacity: 0.7;
    }

    /* 激活/选中状态 */
    .support-sidebar .toc-item.active a {
        background-color: rgba(186, 55, 42, 0.1);
        box-shadow: 0 4px 12px rgba(186, 55, 42, 0.2);
        color: #ba372a;
        font-weight: bold;
        transform: translateX(5px);
    }

    .support-sidebar .toc-item.active::before {
        opacity: 1;
    }

    /* 右侧内容区域样式 - 关键修改 */
    .support-content {
        flex: 1;
        padding: 40px 60px 10px 60px;
        position: relative;
        background: #fff;
        min-height: auto; /* 改为auto */
        height: auto; /* 自动高度 */
    }

    /* 桌面端内容切换效果 */
    .support-content .content-section {
        display: none;
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.4s ease, transform 0.4s ease;
        height: 0;
        overflow: hidden;
    }

    .support-content .content-section.active {
        display: block;
        opacity: 1;
        transform: translateY(0);
        height: auto; /* 自动高度 */
        overflow: visible;
        animation: fadeInUp 0.4s ease forwards;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .support-content .section-title {
        font-weight: bold;
        margin-bottom: 15px;
        color: #333;
    }

    /* 特殊图标样式 */
    .feature-item {
        display: flex;
        align-items: flex-start;
        margin-bottom: 25px;
    }

    /* 优化图标样式 */
    .feature-icon {
        width: 22px;
        height: 22px;
        background-color: #ba372a;
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        font-weight: bold;
        margin-right: 15px;
        flex-shrink: 0;
        margin-top: 2px;
        line-height: 1;
    }

    /* 针对不同图标微调 */
    .feature-icon.checkmark {
        font-size: 17px;
        padding-top: 1px;
    }

    .feature-icon.gear {
        font-size: 17px;
        padding-top: 1px;
    }

    .feature-icon.handshake {
        font-size: 16px;
        padding-top: 0;
    }

    .feature-icon.megaphone {
        font-size: 16px;
        padding-top: 0;
    }

    .feature-icon.bulb {
        font-size: 16px;
        padding-top: 0;
    }

    .feature-content {
        flex: 1;
    }

    /* 红色按钮基础样式 */
    .support-content .red-button {
        display: inline-block;
        background-color: #ba372a;
        color: white;
        text-decoration: none;
        padding: 12px 24px;
        border-radius: 6px;
        font-weight: bold;
        font-size: 16px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 8px rgba(186, 55, 42, 0.3);
        border: none;
        cursor: pointer;
        text-align: center;
        margin-top: 15px;
        margin-right: 15px;
        margin-bottom: 10px;
    }

    .support-content .red-button:hover {
        background-color: #a12e22;
        transform: translateY(-2px);
        box-shadow: 0 6px 12px rgba(186, 55, 42, 0.4);
    }

    .support-content .red-button:active {
        transform: translateY(0);
        box-shadow: 0 2px 4px rgba(186, 55, 42, 0.3);
    }

    /* 按钮容器 - 用于一行多个按钮 */
    .button-group {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        margin-top: 15px;
        margin-bottom: 25px;
    }

    /* 列表样式调整 */
    .support-content ul {
        list-style: none;
        padding: 0;
        margin: 0 0 25px 0;
    }

    .support-content li {
        margin-bottom: 0;
    }

    /* 移动端关闭按钮 - 桌面端默认隐藏 */
    .mobile-close-btn {
        display: none !important;
        position: fixed;
        top: 20px;
        left: 20px;
        background: #ba372a;
        color: white;
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        font-size: 24px;
        z-index: 1001;
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }

    /* 移动端样式 - 垂直排列所有内容 */
    @media screen and (max-width: 992px) {
        .support-container {
            flex-direction: column;
            min-height: auto; /* 移动端自动高度 */
        }
        
        /* 移动端隐藏侧边栏 */
        .support-sidebar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: white;
            z-index: 999;
            overflow-y: auto;
            padding-top: 80px;
            border-right: none;
        }
        
        /* 移动端内容区域全宽 */
        .support-content {
            width: 100%;
            padding: 20px;
            min-height: auto; /* 自动高度 */
        }
        
        /* 移动端显示所有内容部分 */
        .support-content .content-section {
            display: block !important;
            opacity: 1;
            transform: none;
            height: auto;
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 2px solid #eee;
            animation: none;
        }
        
        /* 最后一个部分不需要底部边框 */
        .support-content .content-section:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        /* 移动端标题调整 */
        .support-content .section-title {
            font-size: 24px;
            margin-bottom: 25px;
        }
        
        /* 移动端按钮调整 */
        .support-content .red-button {
            padding: 10px 18px;
            font-size: 14px;
            margin-right: 10px;
            margin-bottom: 10px;
        }
        
        .button-group {
            gap: 10px;
        }
        
        /* 移动端图标调整 */
        .feature-icon {
            width: 20px;
            height: 20px;
            font-size: 14px;
            margin-right: 12px;
        }
        
        .feature-item {
            margin-bottom: 20px;
        }
        
        /* 移动端导航切换按钮 */
        .mobile-nav-toggle {
            display: block;
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1000;
            background-color: #ba372a;
            color: white;
            border: none;
            border-radius: 5px;
            padding: 10px 15px;
            font-weight: bold;
            cursor: pointer;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        
        /* 移动端侧边栏 - 作为下拉菜单 */
        .support-sidebar.mobile-visible {
            display: block;
        }
        
        .support-sidebar.mobile-visible .toc-item a {
            font-size: 18px;
            padding: 15px 20px;
        }
        
        /* 移动端显示关闭按钮 */
        .support-sidebar.mobile-visible .mobile-close-btn {
            display: flex !important;
        }
        
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 998;
        }
        
        .mobile-overlay.visible {
            display: block;
        }
    }

    /* 桌面端小屏幕调整 */
    @media screen and (min-width: 993px) and (max-width: 1200px) {
        .support-sidebar {
            width: 320px;
        }
        
        .support-content {
            padding: 30px 40px;
        }
    }
    
    /* 移动端导航切换按钮 - 桌面端隐藏 */
    .mobile-nav-toggle {
        display: none;
    }
    
    /* 移动端覆盖层 - 桌面端隐藏 */
    .mobile-overlay {
        display: none;
    }
    
    /* 底部内容对齐 */
    .support-content .content-section.active {
        padding-bottom: 20px; /* 减少底部padding */
    }