/* =====================================================
TECH COLUMN
===================================================== */

.tech-container{
display:flex;
max-width:1440px;
margin:30px auto;
gap:25px;
}

/* 左侧导航 */

.tech-sidebar-left{
width:240px;
position:sticky;
top:20px;
background:#fff;
padding:15px;
border-radius:10px;
border:1px solid #e2e8f0;
}

/* 中间正文 */

.tech-main-content{
flex:1;
max-width:850px;
background:#fff;
padding:40px;
border-radius:10px;
box-shadow:0 4px 6px rgba(0,0,0,0.05);
}

/* 右侧目录 */

.tech-sidebar-right{
width:280px;
position:sticky;
top:20px;
}

.sidebar-box{
background:#fff;
padding:20px;
border-radius:10px;
border:1px solid #e2e8f0;
margin-bottom:20px;
}