/* ============================================
   表格布局最终解决方案
   100%浏览器兼容，解决所有布局问题
   ============================================ */

/* 重置所有可能的布局 */
.main-container {
    /* 移除所有现代布局 */
    display: table !important;
    display: -moz-table !important;
    display: -webkit-table !important;
    
    width: 100% !important;
    max-width: 1400px !important;
    margin: 40px auto !important;
    border-spacing: 30px !important;
    border-collapse: separate !important;
    
    /* 覆盖一切 */
    all: unset !important;
    display: table !important;
    width: 100% !important;
    max-width: 1400px !important;
    margin: 40px auto !important;
    border-spacing: 30px !important;
    border-collapse: separate !important;
    box-sizing: border-box !important;
}

/* 表格行 */
.main-container-inner {
    display: table-row !important;
    width: 100% !important;
}

/* 左侧栏 - 表格单元格 */
.main-container > .left-sidebar {
    display: table-cell !important;
    display: -moz-table-cell !important;
    display: -webkit-table-cell !important;
    
    width: 280px !important;
    min-width: 280px !important;
    max-width: 280px !important;
    vertical-align: top !important;
    
    /* 防止任何影响 */
    float: none !important;
    position: static !important;
    clear: none !important;
}

/* 中间栏 - 表格单元格 */
.main-container > .main-content {
    display: table-cell !important;
    display: -moz-table-cell !important;
    display: -webkit-table-cell !important;
    
    width: auto !important;
    vertical-align: top !important;
    
    float: none !important;
    position: static !important;
    clear: none !important;
}

/* 右侧栏 - 表格单元格（绝对在右侧） */
.main-container > .right-sidebar {
    display: table-cell !important;
    display: -moz-table-cell !important;
    display: -webkit-table-cell !important;
    
    width: 280px !important;
    min-width: 280px !important;
    max-width: 280px !important;
    vertical-align: top !important;
    
    /* 绝对确保在右侧 */
    float: none !important;
    position: static !important;
    clear: none !important;
}

/* 响应式 - 小屏幕堆叠 */
@media (max-width: 768px) {
    .main-container {
        display: block !important;
        border-spacing: 0 !important;
    }
    
    .main-container > .left-sidebar,
    .main-container > .main-content,
    .main-container > .right-sidebar {
        display: block !important;
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        margin-bottom: 20px !important;
    }
}

/* 最高特异性选择器确保生效 */
html body .main-container,
body .main-container,
:root .main-container {
    display: table !important;
}

html body .main-container .right-sidebar,
body .main-container .right-sidebar,
:root .main-container .right-sidebar {
    display: table-cell !important;
    width: 280px !important;
}