#app{display:flex;min-height:100vh;width:100%;}
#main{flex:1;padding:16px;width:100%;}
#content{width:100%;}

/* 电脑>768px 侧边栏+4列/3列布局（适配收窄后的侧边栏） */
@media(min-width:769px){
    #sidebar{display:flex !important;}
    #main{margin-left:200px;width:calc(100% - 200px);max-width:1300px;margin:0 auto 0 200px;}
    .grid-four{display:grid !important;grid-template-columns:repeat(4,1fr) !important;gap:28px 6px !important;}
    .grid-six{display:grid !important;grid-template-columns:repeat(3,1fr) !important;gap:28px 6px !important;}
}
/* 手机<768px 隐藏侧边+双列 */
@media(max-width:768px){
    #sidebar{display:none !important;}
    #main{padding:12px;margin-left:0;}
    .grid-four{display:grid !important;grid-template-columns:repeat(2,1fr) !important;gap:30px 12px !important;}
    .grid-six{display:grid !important;grid-template-columns:repeat(2,1fr) !important;gap:30px 12px !important;}
}