:root{--bg:#f6f7f9;--panel:#fff;--line:#e5e7eb;--text:#111827;--muted:#6b7280;--accent:#2563eb;--accent2:#1d4ed8;--side:#fbfbfc;--danger:#b91c1c}*{box-sizing:border-box}body,html{margin:0;height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}.portal-shell{display:grid;grid-template-columns:300px 1fr;grid-template-rows:64px 1fr;height:100vh;overflow:hidden}.topbar{grid-column:1/3;gap:24px;padding:0 18px;border-bottom:1px solid var(--line);background:#fff;z-index:10}.top-left,.topbar{display:flex;align-items:center}.top-left{gap:10px;min-width:265px}.brand-mark,.logo{width:38px;height:38px;border-radius:10px;background:#111827;color:#fff;display:grid;place-items:center;font-weight:800;letter-spacing:-.5px}.brand{display:flex;flex-direction:column}.brand b{font-size:14px}.brand span{font-size:11px;color:var(--muted)}.selectors{display:flex;gap:8px;flex:1 1}.selectors select{min-width:170px;height:36px;border:1px solid var(--line);border-radius:8px;padding:0 10px;background:#fff}.top-actions{display:flex;align-items:center;gap:8px}.icon-btn{border:0;background:transparent;border-radius:8px;width:36px;height:36px;display:grid;place-items:center;color:#4b5563}.icon-btn:hover{background:#f3f4f6}.user-chip{display:flex;align-items:center;gap:8px;margin-left:4px}.user-chip .avatar{width:32px;height:32px;border-radius:50%;background:#e5e7eb;display:grid;place-items:center;font-weight:700}.user-chip>div:last-child{display:flex;flex-direction:column;max-width:180px}.user-chip b{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip span{font-size:10px;color:var(--muted)}.sidebar{grid-column:1;grid-row:2;border-right:1px solid var(--line);overflow:auto}.side-head,.sidebar{background:var(--side)}.side-head{position:-webkit-sticky;position:sticky;top:0;padding:12px;display:flex;gap:8px;border-bottom:1px solid #eef0f3;z-index:2}.search-box{height:36px;display:flex;align-items:center;gap:7px;padding:0 9px;border:1px solid var(--line);border-radius:8px;background:#fff;flex:1 1;color:#9ca3af}.search-box input{border:0;outline:0;width:100%;background:transparent;font-size:12px}.nav-caption{padding:14px 13px 7px;display:flex;align-items:center;gap:6px;font-size:11px;text-transform:uppercase;font-weight:700;color:#9ca3af;letter-spacing:.06em}.tree{padding:0 8px 20px}.tree-row{width:100%;border:0;background:transparent;display:flex;align-items:center;gap:7px;min-height:32px;border-radius:6px;text-align:left;color:#374151;font-size:12.5px}.tree-row:hover{background:#eef2f7}.tree-row.active{background:#e8eefc;color:#1746a2;font-weight:600}.tree-row .rotate{transform:rotate(90deg)}.tree-row svg{flex:0 0 auto}.loading-line{padding:16px;color:var(--muted);font-size:12px}.content-area{grid-column:2;grid-row:2;overflow:auto;background:var(--bg)}.doc-toolbar{height:54px;padding:0 24px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;position:-webkit-sticky;position:sticky;top:0;z-index:4}.breadcrumbs{display:flex;gap:8px;font-size:12px;color:var(--muted);min-width:0}.breadcrumbs span{white-space:nowrap;max-width:180px;overflow:hidden;text-overflow:ellipsis}.breadcrumbs span+span:before{content:"/";margin-right:8px;color:#c1c5cc}.doc-actions{gap:8px}.doc-actions,.status-message{display:flex;align-items:center}.status-message{gap:5px;color:#15803d;font-size:12px}.doc-panel{max-width:1180px;margin:24px auto;background:#fff;border:1px solid var(--line);border-radius:12px;min-height:calc(100vh - 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