:root{--navy: #0b1f3a;--navy-7: #16335c;--accent: #c8893b;--accent-6: #b3792e;--bg: #f6f8fb;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(15, 41, 77, .06);--shadow: 0 4px 14px rgba(15, 41, 77, .08);--shadow-lg: 0 10px 30px rgba(15, 41, 77, .14);--danger: #b91c1c;--danger-bg: #fee2e2;--ok: #15803d;--ok-bg: #dcfce7;color:var(--text);background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}select,input[type=text],input[type=search]{font-family:inherit}*{box-sizing:border-box}body{margin:0}.app-shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr;transition:grid-template-columns .18s ease}.app-shell.nav-collapsed{grid-template-columns:64px 1fr}.sidebar{background:var(--navy);color:#fff;padding:24px 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var(--border);border-radius:12px;overflow:hidden;display:flex}.op-preview iframe{flex:1;border:0;width:100%}.op-placeholder{margin:auto;color:#94a3b8}.op-tree details{margin:0}.op-tree summary{cursor:pointer;padding:3px 6px;border-radius:6px;list-style:none;white-space:nowrap}.op-tree summary::-webkit-details-marker{display:none}.op-tree summary:hover{background:#eef2f8}.op-tree .ic{display:inline-block;width:1.2em;color:#94a3b8}.op-tree .kids{margin-left:14px;border-left:1px dashed var(--border);padding-left:6px}.op-file{display:flex;gap:6px;align-items:center;padding:3px 6px;border-radius:6px;cursor:pointer;white-space:nowrap}.op-file:hover{background:#eef2f8}.op-file.sel{background:var(--accent, #19c4c4);color:#04313a}.op-file .sz{color:#94a3b8;font-size:12px;margin-left:auto;padding-left:10px}.op-file.sel .sz{color:#04313a}.op-toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px}.op-toolbar label{font-size:13px;color:#475569;display:flex;gap:6px;align-items:center}.op-toolbar select,.op-toolbar input[type=text]{border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:13px}.op-toolbar input[type=text]{min-width:220px}.op-btn{background:var(--accent, #c8893b);border:0;color:#fff;font-weight:600;border-radius:var(--radius-sm, 8px);padding:8px 14px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:var(--space-2, 8px);white-space:nowrap;transition:filter .12s ease,transform .02s ease}.op-btn:hover:not(:disabled){filter:brightness(.94)}.op-btn:active:not(:disabled){transform:translateY(1px)}.op-btn:disabled{opacity:.5;cursor:not-allowed}.op-btn-danger{background:var(--danger-bg, #fee2e2);color:var(--danger, #b91c1c)}.op-logs{background:#0b1220;border-radius:12px;height:calc(100vh - 200px);min-height:320px;overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:#cbd5e1}.op-logrow{padding:3px 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#e2e8f0);border-radius:12px;overflow:hidden;background:#fff}.chat-pdf-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px;background:#15294d;color:#fff}.chat-pdf-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-pdf iframe{flex:1;border:0;width:100%}.upload{max-width:720px}.upload-field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;font-size:14px;color:#475569}.upload-drop{border:2px dashed var(--border, #cbd5e1);border-radius:12px;padding:22px;text-align:center;color:#64748b;margin-bottom:16px}.upload-pickers{display:flex;gap:8px;justify-content:center;margin-top:10px}.upload-list{margin-bottom:16px}.upload-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 10px;border:1px solid var(--border, #e2e8f0);border-radius:8px;margin-bottom:4px;font-size:13px}.upload-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#15294d}.faq{max-width:760px}.faq-intro{color:#475569;font-size:15px;margin-bottom:18px}.faq-h2{font-size:16px;color:#15294d;margin:26px 0 10px;border-bottom:1px solid #eef2f8;padding-bottom:6px}.faq-item{border:1px solid var(--border, #e2e8f0);border-radius:10px;background:#fff;margin-bottom:8px}.faq-item summary{cursor:pointer;padding:12px 14px;font-weight:600;color:#15294d;font-size:14px;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:before{content:"＋";color:#19c4c4;font-weight:700;margin-right:8px}.faq-item[open] summary:before{content:"－"}.faq-item[open] summary{border-bottom:1px solid #eef2f8}.faq-a{padding:12px 14px;color:#334155;font-size:14px;line-height:1.55}.faq-a ul{margin:8px 0;padding-left:20px}.faq-a li{margin:6px 0}.faq-foot{margin-top:22px;font-size:13px}.faq-ask{margin-top:26px;padding-top:18px;border-top:1px solid #eef2f8}.faq-textarea{width:100%;border:1px solid var(--border, #e2e8f0);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;resize:vertical;margin-bottom:10px;box-sizing:border-box}.faq-sent{color:#047857;font-weight:600}.faq-admin{margin-top:26px;padding-top:18px;border-top:1px solid #eef2f8}.faq-q-row{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;border:1px solid var(--border, #e2e8f0);border-radius:8px;padding:8px 10px}.faq-q-text{color:#15294d;font-size:14px;margin-bottom:2px;white-space:pre-wrap}@media (max-width: 720px){.op-split{flex-direction:column;height:auto}.op-tree{width:auto;max-height:45vh}.op-preview{min-height:60vh}.chat-wrap{flex-direction:column}.chat-wrap.has-pdf .chat{flex:1 1 auto}.chat-pdf{min-height:50vh}.op-table{display:block;overflow-x:auto;white-space:nowrap}.op-toolbar{flex-wrap:wrap;gap:8px}.op-search{width:100%}.sync-card{left:12px;right:12px;bottom:12px;width:auto}.op-h1{font-size:20px}.op-tabs{flex-wrap:wrap}}