:root{--primary: #667eea;--primary-dark: #5a6fd6;--primary-light: #8fa4f3;--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--flight-color: #4facfe;--flight-dark: #0281e3;--flight-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);--train-color: #43e97b;--train-dark: #1ec95a;--train-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);--accent-orange: #f9a825;--accent-pink: #f06292;--accent-purple: #ab47bc;--accent-teal: #26c6da;--accent-red: #ef5350;--accent-green: #66bb6a;--success: #43e97b;--warning: #f9a825;--danger: #ef5350;--info: #4facfe;--bg: #f0f4ff;--bg-2: #e8eeff;--surface: #ffffff;--surface-2: #f8faff;--surface-3: #f0f2f8;--text: #2d3748;--text-secondary: #5a6680;--text-muted: #9aa5b8;--text-inverse: #ffffff;--border: #e2e8f0;--border-light: #edf2f7;--shadow-sm: 0 1px 3px rgba(102, 126, 234, .08), 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(102, 126, 234, .12), 0 2px 4px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 30px rgba(102, 126, 234, .16), 0 4px 8px rgba(0, 0, 0, .08);--shadow-xl: 0 20px 60px rgba(102, 126, 234, .2);--sidebar-width: 240px;--topbar-height: 60px;--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--transition: .2s ease;--transition-slow: .35s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition);white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 2px 8px #667eea66}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 14px #667eea80}.btn-secondary{background:var(--surface);color:var(--primary);border:1.5px solid var(--primary)}.btn-secondary:hover:not(:disabled){background:var(--bg-2)}.btn-danger{background:var(--danger);color:#fff;box-shadow:0 2px 8px #ef53504d}.btn-danger:hover:not(:disabled){background:#e53935}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--surface-3);color:var(--text)}.btn-sm{padding:5px 12px;font-size:13px}.btn-lg{padding:12px 24px;font-size:15px}.btn-icon{padding:8px;border-radius:var(--radius-sm);background:transparent;border:none;cursor:pointer;color:var(--text-muted);transition:all var(--transition);display:inline-flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--surface-3);color:var(--text)}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;color:var(--text);background:var(--surface);transition:border-color var(--transition),box-shadow var(--transition);outline:none;font-family:inherit}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #667eea26}.form-textarea{resize:vertical;min-height:80px}.form-input::placeholder{color:var(--text-muted)}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}.card-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.card-title{font-size:15px;font-weight:600;color:var(--text)}.card-body{padding:20px}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:var(--radius-full);font-size:12px;font-weight:500}.badge-flight{background:#4facfe26;color:var(--flight-dark)}.badge-train{background:#43e97b26;color:var(--train-dark)}.badge-primary{background:#667eea26;color:var(--primary)}.tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--radius-full);font-size:12px;background:var(--surface-3);color:var(--text-secondary);border:1px solid var(--border)}.data-table{width:100%;border-collapse:collapse}.data-table th{text-align:left;padding:10px 14px;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border);white-space:nowrap}.data-table td{padding:12px 14px;border-bottom:1px solid var(--border-light);color:var(--text)}.data-table tr:last-child td{border-bottom:none}.data-table tbody tr:hover td{background:var(--bg-2)}.stat-card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px}.stat-card.flight:before{background:var(--flight-gradient)}.stat-card.train:before{background:var(--train-gradient)}.stat-card.total:before{background:var(--primary-gradient)}.stat-card.cities:before{background:linear-gradient(135deg,#f093fb,#f5576c)}.stat-value{font-size:28px;font-weight:700;line-height:1;margin-bottom:4px}.stat-label{font-size:13px;color:var(--text-muted)}.stat-icon{width:44px;height:44px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;position:absolute;right:20px;top:20px}.pagination{display:flex;align-items:center;gap:4px;justify-content:center;padding:12px 0}.page-btn{min-width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:var(--surface);font-size:13px;cursor:pointer;transition:all var(--transition);color:var(--text)}.page-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.page-btn:disabled{opacity:.5;cursor:not-allowed}.app-layout{display:flex;height:100vh;overflow:hidden}.app-main{flex:1;display:flex;flex-direction:column;overflow:hidden;margin-left:var(--sidebar-width);transition:margin-left var(--transition-slow)}.app-content{flex:1;overflow-y:auto;padding:24px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-title{font-size:22px;font-weight:700;color:var(--text)}.page-subtitle{font-size:13px;color:var(--text-muted);margin-top:2px}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}.spinner-lg{width:40px;height:40px;border-width:3px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state-icon{font-size:48px;margin-bottom:12px}.empty-state-text{font-size:15px;margin-bottom:16px}.text-flight{color:var(--flight-dark)}.text-train{color:var(--train-dark)}.text-primary{color:var(--primary)}.text-muted{color:var(--text-muted)}.text-danger{color:var(--danger)}.fw-bold{font-weight:700}.fw-600{font-weight:600}.mt-4{margin-top:4px}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mb-16{margin-bottom:16px}.gap-4{gap:4px}.gap-8{gap:8px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.flex-1{flex:1}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}@media (max-width: 768px){.app-main{margin-left:0}.app-content{padding:16px}.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}.leaflet-popup-content-wrapper{border-radius:var(--radius)!important;box-shadow:var(--shadow-lg)!important}.route-popup{padding:4px}.route-popup .route-title{font-weight:600;font-size:14px;margin-bottom:4px}