/* Core Tech uses the same expandable reading-index pattern as the Web Manual. */
.core-subnav{display:none}
.core-page-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:66px}.core-side{position:sticky;top:84px;align-self:start}.core-side b{display:block;margin-bottom:18px;color:#24272c;font:700 11px Montserrat,"Noto Sans KR",Arial,sans-serif;letter-spacing:.14em}.core-side a{display:block;padding:12px 0;border-bottom:1px solid #d8d4cc;color:#707780;font:13px "Noto Sans KR",Arial,sans-serif;line-height:1.4;text-decoration:none}.core-side a:hover,.core-side a.active{color:#17191e;font-weight:700}.core-content{min-width:0}.core-content .section:first-child{padding-top:0}@media(max-width:850px){.core-page-layout{display:block}.core-side{position:static;display:flex;gap:16px;overflow-x:auto;padding:0 0 20px;margin-bottom:52px;border-bottom:1px solid #d8d4cc}.core-side b{display:none}.core-side a{flex:0 0 auto;border:0;padding:0;font-size:12px}}