:root{--primary:#1a56db;--bg:#f5f7fb;--border:#e2e8f0;--warn:#b45309}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,sans-serif;background:var(--bg);color:#1e293b}a{color:var(--primary);text-decoration:none}.header{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;gap:20px}.header .logo{font-weight:700;font-size:18px;color:var(--primary)}.header nav a{margin-right:16px}.container{max-width:1100px;margin:20px auto;padding:0 16px}.card{background:#fff;border:1px solid var(--border);border-radius:8px;padding:16px;margin-bottom:16px}.btn{background:var(--primary);color:#fff;border:0;border-radius:6px;padding:8px 16px;cursor:pointer;font-size:14px}.btn.gray{background:#64748b}.btn.red{background:#dc2626}.btn.green{background:#16a34a}.btn.sm{padding:4px 10px;font-size:13px}.btn:disabled{opacity:.5;cursor:not-allowed}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{background:#f8fafc;color:#475569}.disclaimer{background:#fef3c7;color:var(--warn);padding:10px 14px;border-radius:6px;font-size:12px;margin:12px 0;line-height:1.6}.disclaimer.bar{position:sticky;top:0;z-index:10;margin:0;border-radius:0}.layout{display:flex;min-height:calc(100vh - 56px)}.sidebar{width:200px;background:#fff;border-right:1px solid var(--border);padding:16px 0;flex-shrink:0}.sidebar a{display:block;padding:10px 20px;color:#334155;font-size:14px}.sidebar a.active{background:#eff6ff;color:var(--primary);border-right:3px solid var(--primary);font-weight:600}.main{flex:1;padding:20px}.tag{display:inline-block;padding:2px 8px;border-radius:10px;font-size:12px;background:#eff6ff;color:var(--primary)}.tag.paid{background:#dcfce7;color:#15803d}.tag.unpaid{background:#fee2e2;color:#b91c1c}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.form-item{margin-bottom:12px}.form-item label{display:block;font-size:13px;margin-bottom:4px;color:#475569}.form-item input,.form-item select,.form-item textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px}.msg-chat{background:#f8fafc;border-radius:8px;padding:10px 14px;margin:8px 0;font-size:13px}.msg-chat.ai_buyer_agent{border-left:3px solid #0ea5e9}.msg-chat.ai_seller_agent{border-left:3px solid #16a34a}.tabs{display:flex;gap:4px;margin-bottom:16px;flex-wrap:wrap}.tabs button{border:1px solid var(--border);background:#fff;padding:8px 14px;border-radius:6px;cursor:pointer;font-size:13px}.tabs button.active{background:var(--primary);color:#fff;border-color:var(--primary)}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}.stat{background:#fff;border:1px solid var(--border);border-radius:8px;padding:14px}.stat b{font-size:22px;display:block;color:var(--primary)}.stat span{font-size:12px;color:#64748b}