.shell{min-height:100%;padding-top:var(--header-h);padding-left:calc(var(--rail-w) + var(--sidebar-w))}.shell:not(:has(.rail)){padding-left:var(--sidebar-w)}.shell:not(:has(.rail)) .sidebar{left:0}.topbar{position:fixed;inset:0 0 auto 0;z-index:30;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;background:var(--surface);border-bottom:1px solid var(--border)}.brand{display:inline-flex;align-items:center;gap:9px;color:var(--text);font-size:16px;font-weight:600;letter-spacing:-.02em}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:28px;height:28px;border-radius:var(--radius-sm);background:var(--primary);color:var(--primary-contrast)}.topbar-actions{display:flex;align-items:center;gap:8px}.bell{position:relative;display:grid;place-items:center;width:36px;height:36px;border-radius:var(--radius);color:var(--text-muted);transition:background-color var(--transition),color var(--transition)}.bell:hover{background:var(--surface-muted);color:var(--text);text-decoration:none}.bell[data-unread=true]:after{content:"";position:absolute;top:6px;right:7px;width:8px;height:8px;border:2px solid var(--surface);border-radius:var(--radius-full);background:var(--danger)}.user-chip{display:flex;align-items:center;gap:8px;padding-left:8px;border-left:1px solid var(--border)}.avatar{display:grid;place-items:center;width:30px;height:30px;border-radius:var(--radius-full);background:var(--primary-light);border:1px solid var(--primary);color:var(--primary-hover);font-size:12px;font-weight:700;text-transform:uppercase}.user-name{font-size:13.5px;font-weight:500}.sidebar{position:fixed;top:var(--header-h);bottom:0;left:var(--rail-w);z-index:20;width:var(--sidebar-w);padding:14px 12px 24px;background:var(--surface);border-right:1px solid var(--border);overflow-y:auto;overscroll-behavior:contain}.nav-group+.nav-group{margin-top:18px}.nav-title{margin:0 10px 6px;color:var(--text-muted);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.nav-toggle{display:flex;align-items:center;gap:6px;width:calc(100% - 20px);padding:4px 0;border:none;background:transparent;font:inherit;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);cursor:pointer;transition:color var(--transition)}.nav-toggle:hover{color:var(--text)}.nav-caret{margin-left:auto;color:var(--text-placeholder);transition:transform var(--transition)}.nav-group[data-open=false] .nav-caret{transform:rotate(-90deg)}.nav-link{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius);color:var(--text-muted);font-size:13.5px;font-weight:500;transition:background-color var(--transition),color var(--transition)}.nav-link:hover{background:var(--surface-muted);color:var(--text);text-decoration:none}.nav-link svg{flex:0 0 auto;color:var(--text-placeholder);transition:color var(--transition)}.nav-link:hover svg{color:var(--text-muted)}.nav-link.on,.nav-link.on:hover{background:var(--primary-light);color:var(--primary-hover);font-weight:600}.nav-link.on svg{color:var(--primary)}.nav-count{margin-left:auto;padding:0 6px;border-radius:var(--radius-full);background:var(--danger-bg);border:1px solid var(--danger-border);color:var(--danger);font-size:11px;font-weight:700;line-height:16px}.content{padding:24px 24px 56px}.page-head{margin-bottom:20px}.page-head h1{display:flex;align-items:center;margin:0;font-size:22px;font-weight:600;letter-spacing:-.02em}h2{margin:0 0 10px;font-size:16px;font-weight:600;letter-spacing:-.01em}.tree{margin:0;padding:0;list-style:none}.tree .tree{margin-left:13px;padding-left:14px;border-left:1px solid var(--border)}.tree-node{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius);transition:background-color var(--transition)}.tree-node:hover{background:var(--surface-hover)}.tree-node svg{flex:0 0 auto;color:var(--text-placeholder)}.tree-name{font-weight:500}.tree-meta{margin-left:auto}@media(max-width:860px){.shell{padding-left:0}.rail{display:none}.sidebar{position:fixed;top:var(--header-h);bottom:auto;left:0;width:100%;display:flex;gap:6px;padding:8px 12px;border-right:none;border-bottom:1px solid var(--border);overflow-x:auto;overflow-y:hidden}.nav-group,.nav-group+.nav-group{display:flex;gap:6px;margin:0}.sidebar-head,.nav-title{display:none}.nav-toggle{display:inline-flex;width:auto;margin:0;padding:8px 10px;border-radius:var(--radius);background:var(--surface-muted);white-space:nowrap}.nav-link{white-space:nowrap}.content{padding:74px 16px 48px}.user-name{display:none}}.rail{position:fixed;top:var(--header-h);bottom:0;left:0;z-index:25;width:var(--rail-w);display:flex;flex-direction:column;gap:2px;padding:10px 6px;background:var(--surface-muted);border-right:1px solid var(--border);overflow-y:auto;overscroll-behavior:contain}.rail-link{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 4px 8px;border-radius:var(--radius);color:var(--text-muted);text-decoration:none;transition:background .12s,color .12s}.rail-link:hover{background:var(--surface-hover);color:var(--text)}.rail-link.on{background:var(--surface);color:var(--primary);box-shadow:inset 2px 0 0 var(--primary)}.rail-label{font-size:10.5px;font-weight:600;line-height:1.2;text-align:center}.rail-dot{position:absolute;top:8px;right:10px;width:8px;height:8px;border-radius:var(--radius-full);background:var(--danger)}.sidebar-head{margin:2px 10px 12px;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted)}