.hd-layout{grid-template-columns:300px 1fr;align-items:start;gap:48px;display:grid}.hd-sidebar{position:sticky;top:24px}.hd-sidebar h4{margin:0 0 14px;font-size:.98rem}.hd-search{border:1px solid var(--neutral-300);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);background:#fff;border-radius:999px;align-items:center;gap:10px;margin-bottom:20px;padding:11px 18px;display:flex}.hd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-100)}.hd-search svg{color:var(--neutral-500);flex:none}.hd-search input{background:0 0;border:none;outline:none;flex:1;font-family:inherit;font-size:.9rem}.hd-tree{flex-direction:column;gap:2px;display:flex}.hd-cat{border-radius:8px}.hd-cat>button{text-align:left;width:100%;color:var(--neutral-900);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;font-family:inherit;font-size:.9rem;font-weight:700;display:flex}.hd-cat>button:hover{background:var(--primary-100)}.hd-cat.is-open>button,.hd-cat.is-active>button{color:var(--primary)}.hd-cat.is-active>button{background:var(--primary-100)}.hd-cat .chevron{transition:transform .2s var(--ease);color:var(--neutral-500);flex:none}.hd-cat.is-open .chevron{transform:rotate(90deg)}.hd-groups{margin:2px 0 6px;padding-left:12px;display:none}.hd-cat.is-open .hd-groups{display:block}.hd-group h5{text-transform:uppercase;letter-spacing:.04em;color:var(--neutral-500);margin:12px 0 4px;padding-left:12px;font-size:.76rem}.hd-groups ul{margin:0;padding:0;list-style:none}.hd-groups li a{color:var(--neutral-700);border-radius:8px;padding:7px 12px;font-size:.86rem;display:block}.hd-groups li a:hover{background:var(--primary-100);color:var(--primary)}.hd-content{min-width:0}.help-panel{display:none}.help-panel.is-active{animation:tabFadeIn .35s var(--ease);display:block}.help-panel h1{margin-bottom:8px}.help-panel .help-count{color:var(--neutral-500);margin:0 0 28px;font-size:.9rem}.help-groups{grid-template-columns:repeat(3,1fr);gap:36px;display:grid}.help-groups h4{color:var(--primary-900);margin-bottom:14px;font-size:.98rem}.help-groups ul{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.help-groups li a{color:var(--neutral-700);transition:color .2s var(--ease);font-size:.9rem}.help-groups li a:hover{color:var(--primary)}.hd-mobile-toggle{display:none}.hd-tree-wrap{overflow:hidden}@media (max-width:860px){.hd-layout{grid-template-columns:1fr}.hd-sidebar{position:static}.help-groups{grid-template-columns:1fr}.hd-mobile-toggle{border:1px solid var(--neutral-300);border-radius:var(--radius-md);width:100%;color:var(--primary-900);cursor:pointer;background:#fff;justify-content:space-between;align-items:center;margin-bottom:14px;padding:13px 16px;font-size:.92rem;font-weight:700;display:flex}.hd-mobile-toggle .chevron{transition:transform .25s var(--ease);color:var(--neutral-500);flex:none}.hd-mobile-toggle.is-open .chevron{transform:rotate(180deg)}.hd-tree-wrap{max-height:0;transition:max-height .3s var(--ease)}.hd-tree-wrap.is-open{max-height:2000px}}.hd-cta{border-top:1px solid var(--neutral-300);margin-top:64px;padding-top:48px}.hd-cta h3{margin-bottom:20px}.hd-cta-row{flex-wrap:wrap;align-items:center;gap:14px;display:flex}@keyframes tabFadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.hd-content h1{margin-top:14px}.hd-byline{border-top:1px solid var(--neutral-300);border-bottom:1px solid var(--neutral-300);align-items:center;gap:12px;margin:24px 0 32px;padding:16px 0;display:flex}.hd-avatar{background:var(--primary-100);width:40px;height:40px;color:var(--primary);border-radius:50%;flex:none;justify-content:center;align-items:center;display:flex}.hd-byline .lbl{color:var(--neutral-500);font-size:.78rem}.hd-byline .name{color:var(--neutral-900);font-size:.92rem;font-weight:700}.hd-content p{color:var(--neutral-700);margin:0 0 18px;line-height:1.75}.hd-related{border-top:1px solid var(--neutral-300);margin-top:40px;padding-top:32px}.hd-related h3{margin-bottom:16px;font-size:1.02rem}.hd-related ul{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.hd-related li a{color:var(--primary-900);font-size:.92rem;font-weight:600}.hd-related li a:hover{color:var(--primary)}