: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 #0f294d0f;--shadow:0 4px 14px #0f294d14;--shadow-lg:0 10px 30px #0f294d24;--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{grid-template-columns:240px 1fr;min-height:100vh;transition:grid-template-columns .18s;display:grid}.app-shell.nav-collapsed{grid-template-columns:64px 1fr}.sidebar{background:var(--navy);color:#fff;flex-direction:column;padding:24px 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10px;padding-bottom:6px;font-size:16px}.faq-item{border:1px solid var(--border,#e2e8f0);background:#fff;border-radius:10px;margin-bottom:8px}.faq-item summary{cursor:pointer;color:#15294d;padding:12px 14px;font-size:14px;font-weight:600;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:before{content:"＋";color:#19c4c4;margin-right:8px;font-weight:700}.faq-item[open] summary:before{content:"－"}.faq-item[open] summary{border-bottom:1px solid #eef2f8}.faq-a{color:#334155;padding:12px 14px;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{border-top:1px solid #eef2f8;margin-top:26px;padding-top:18px}.faq-textarea{border:1px solid var(--border,#e2e8f0);resize:vertical;box-sizing:border-box;border-radius:10px;width:100%;margin-bottom:10px;padding:10px 12px;font-family:inherit;font-size:14px}.faq-sent{color:#047857;font-weight:600}.faq-admin{border-top:1px solid #eef2f8;margin-top:26px;padding-top:18px}.faq-q-row{border:1px solid var(--border,#e2e8f0);border-radius:8px;justify-content:space-between;align-items:flex-start;gap:10px;padding:8px 10px;display:flex}.faq-q-text{color:#15294d;white-space:pre-wrap;margin-bottom:2px;font-size:14px}@media (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:auto}.chat-pdf{min-height:50vh}.op-table{white-space:nowrap;display:block;overflow-x:auto}.op-toolbar{flex-wrap:wrap;gap:8px}.op-search{width:100%}.sync-card{width:auto;bottom:12px;left:12px;right:12px}.op-h1{font-size:20px}.op-tabs{flex-wrap:wrap}}