:root{--brand:#4f46e5;--brand-600:#4338ca;--brand-700:#3730a3;--brand-light:#eef2ff;--brand-soft:#e0e7ff;--ok:#10b981;--ok-50:#ecfdf5;--warn:#f59e0b;--warn-50:#fffbeb;--danger:#ef4444;--danger-50:#fef2f2;--info:#3b82f6;--info-50:#eff6ff;--bg:#f8fafc;--surface:#fff;--surface-raised:#fff;--border:#e2e8f0;--border-subtle:#f1f5f9;--text:#0f172a;--text-secondary:#475569;--text-tertiary:#94a3b8;--radius-sm:8px;--radius:12px;--radius-lg:16px;--shadow-sm:0 1px 2px 0 #0f172a0a, 0 1px 2px -1px #0f172a0a;--shadow:0 4px 6px -1px #0f172a0d, 0 2px 4px -2px #0f172a0d;--shadow-lg:0 10px 15px -3px #0f172a0f, 0 4px 6px -4px #0f172a0f;--transition:.15s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Microsoft YaHei,PingFang SC,sans-serif;font-size:14px;line-height:1.6}a{color:var(--brand);transition:color var(--transition);text-decoration:none}a:hover{color:var(--brand-600);text-decoration:underline}.workbench{grid-template-columns:340px minmax(0,1fr);align-items:start;gap:20px;display:grid}.workbench>.wb-input{position:sticky;top:84px}.wb-input .card,.wb-result .card{margin-bottom:16px}.wb-result{min-width:0}.empty-state{border:1px dashed var(--border);border-radius:var(--radius-lg);text-align:center;background:var(--surface);color:var(--text-secondary);padding:48px 32px}.empty-state .es-title{color:var(--text);margin:0 0 8px;font-size:15px;font-weight:700}.empty-state .es-desc{max-width:320px;margin:0 auto;font-size:13px;line-height:1.7}.empty-state .es-hint{color:var(--text-tertiary);margin-top:20px;font-size:12px}@media (max-width:980px){.workbench{grid-template-columns:minmax(0,1fr)}.workbench>.wb-input{position:static}}.wb-input .card{padding:18px}.wb-input .card h2{margin-bottom:8px;font-size:15px}.wb-input 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104px);padding-right:4px;display:flex;position:sticky;top:84px;overflow-y:auto}.nav-group-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary);align-items:center;gap:8px;padding:0 14px 8px;font-size:11px;font-weight:700;display:flex}.nav-group-title:after{content:"";background:var(--border-subtle);flex:1;height:1px}.nav-item{cursor:pointer;width:100%;color:var(--text-secondary);text-align:left;transition:background var(--transition), color var(--transition);background:0 0;border:none;border-radius:8px;justify-content:flex-start;align-items:center;gap:6px;margin-bottom:2px;padding:9px 12px 9px 15px;font-size:14px;font-weight:500;display:flex;position:relative}.nav-item:before{content:"";background:var(--brand);width:3px;height:18px;transition:transform var(--transition);border-radius:0 3px 3px 0;position:absolute;top:50%;left:0;transform:translateY(-50%)scaleY(0)}.nav-item:hover:not(:disabled){background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm);transform:none}.nav-item[aria-current=true]{background:var(--brand-light);color:var(--brand-700);font-weight:600}.nav-item[aria-current=true]:before{transform:translateY(-50%)scaleY(1)}.nav-item-label{flex-shrink:0}.nav-item-sub{color:var(--text-tertiary);white-space:nowrap;text-overflow:ellipsis;font-size:11px;font-weight:400;overflow:hidden}.nav-item[aria-current=true] .nav-item-sub{color:var(--brand);opacity:.7}.nav-item-badge{background:var(--danger-50);color:var(--danger);border-radius:999px;flex-shrink:0;margin-left:auto;padding:1px 7px;font-size:11px;font-weight:600}@media (max-width:900px){.app-body{grid-template-columns:minmax(0,1fr);gap:16px;padding:16px 16px 48px}.app-body>.sidenav,.app-body>.app-main{grid-column:1}.sidenav{flex-direction:row;gap:8px;max-height:none;padding-bottom:4px;position:static;overflow-x:auto;width:auto!important}.nav-group{gap:4px;display:flex}.nav-group-title{display:none}.nav-item{white-space:nowrap;width:auto;margin-bottom:0;padding:8px 14px}.nav-item:before{display:none}.nav-item[aria-current=true]{background:var(--brand);color:#fff}.nav-item[aria-current=true] .nav-item-sub{color:#fff;opacity:.75}.nav-item-sub{display:none}}.user-menu{position:relative}.user-trigger{border:1px solid var(--border);color:var(--text);background:0 0;border-radius:999px;align-items:center;gap:8px;padding:4px 10px 4px 4px;font-weight:500;display:inline-flex}.user-trigger:hover:not(:disabled){background:var(--bg);box-shadow:none;border-color:#cbd5e1;transform:none}.user-trigger .avatar{background:linear-gradient(135deg, var(--brand), 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var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition);margin:10px 0;padding:16px}.reply:hover{box-shadow:var(--shadow)}.reply .text{white-space:pre-wrap;color:var(--text);margin:8px 0;line-height:1.7}.reply .why{color:var(--text-secondary);margin-top:6px;font-size:12px}table{border-collapse:separate;border-spacing:0;width:100%;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--border-subtle);vertical-align:top;padding:12px 14px}th{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.03em;background:var(--bg);font-size:12px;font-weight:700}th:first-child{border-top-left-radius:var(--radius-sm);border-bottom-left-radius:var(--radius-sm)}th:last-child{border-top-right-radius:var(--radius-sm);border-bottom-right-radius:var(--radius-sm)}tr:hover td{background:var(--bg)}.spinner{vertical-align:-2px;border:2px solid #ffffff59;border-top-color:#fff;border-radius:50%;width:14px;height:14px;animation:.7s linear infinite spin;display:inline-block}button.secondary .spinner,button.ghost .spinner{border-color:#0f172a26;border-top-color:var(--brand)}@keyframes spin{to{transform:rotate(360deg)}}.login-wrap{max-width:420px;margin:80px auto;padding:0 20px}.login-wrap .card{padding:32px}.login-wrap h2{text-align:center;margin-bottom:20px;font-size:22px}.login-wrap .alert.info{background:var(--bg);border-color:var(--border)}@media (max-width:640px){.shell{padding:16px 16px 48px}.topbar{height:auto;padding:12px 16px}.topbar h1{font-size:16px}.card{padding:18px}.tabs{gap:4px}.tab{padding:8px 12px;font-size:13px}}