/* === KB Category Minimal Layout (3 columns, vertical separators) === */
.kb-wrap{display:grid;grid-template-columns:280px 1fr 300px;gap:0;max-width:1280px;margin:0 auto}
.kb-left{padding:24px 16px;border-right:1px solid #e5e7eb}
.kb-center{padding:32px;overflow:auto;max-height:calc(100vh - 120px)}
.kb-right{padding:24px 16px;border-left:1px solid #e5e7eb}
.kb-left,.kb-right{position:sticky;top:88px;height:calc(100vh - 120px)}
.kb-left h1{font-size:20px;margin:0 0 12px 0}
.kb-left nav ul{list-style:none;margin:0;padding:0}
.kb-left nav li{margin:4px 0}
.kb-left nav a{display:block;padding:8px 10px;border-radius:8px;color:#0f172a}
.kb-left nav a.active{color:#0096AF;font-weight:600}
.kb-center h1{font-size:40px;line-height:1.2;margin:0 0 8px 0}
.kb-center h2{font-size:24px;margin-top:28px}
.kb-center h3{font-size:18px;margin-top:20px}
.kb-right h3{margin-top:0;font-size:14px;text-transform:uppercase;letter-spacing:.02em;color:#475569}
.kb-toc{list-style:none;padding-left:0;margin:0}
.kb-toc li{margin:6px 0}
.kb-toc a{display:block;padding:6px 8px;border-radius:8px;color:#0f172a}
.kb-toc a:hover{background:rgba(0,0,0,.04)}
.kb-toc .toc-level-1{font-weight:700}
.kb-toc .toc-level-2{padding-left:12px}
.kb-toc .toc-level-3{padding-left:24px}
.kb-toc .is-current{color:#0096AF}
.kb-muted{color:#475569}
.kb-divider{height:1px;background:#e5e7eb;margin:12px 0}