*{box-sizing:border-box;margin:0;padding:0}body{color:#333;-webkit-font-smoothing:antialiased;background:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.app-layout{min-height:100vh;display:flex}.left-nav{color:#fff;z-index:100;background:#1a1a2e;width:220px;padding:20px 0;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}.left-nav .hotel-name{border-bottom:1px solid #ffffff1a;margin-bottom:8px;padding:0 20px 20px;font-size:15px;font-weight:700}.left-nav .nav-item{color:#ffffffb3;border-left:3px solid #0000;padding:12px 20px;font-size:13px;font-weight:500;text-decoration:none;transition:all .15s;display:block}.left-nav .nav-item:hover{color:#fff;background:#ffffff0d}.left-nav .nav-item.active{color:#fff;background:#ffffff1a;border-left-color:#ef4444;font-weight:700}.left-nav .nav-label{text-transform:uppercase;letter-spacing:1px;color:#fff6;padding:16px 20px 8px;font-size:10px}.main-content{flex:1;max-width:1400px;margin-left:220px;padding:24px 32px}.page-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.page-title{color:#111;font-size:22px;font-weight:700}.month-badge{color:#fff;background:#dc2626;border-radius:6px;padding:6px 20px;font-size:15px;font-weight:700}.kpi-grid{gap:12px;margin-bottom:28px;display:grid}.kpi-grid-6{grid-template-columns:repeat(6,1fr)}.kpi-grid-4{grid-template-columns:repeat(4,1fr)}.kpi-card{text-align:center;background:#fff;border-radius:8px;padding:16px}.kpi-card.border-red{border:2px solid #ef4444}.kpi-card.border-green{border:2px solid #22c55e}.kpi-card .kpi-label{color:#6b7280;margin-bottom:6px;font-size:11px;font-weight:500}.kpi-card .kpi-value{color:#111;font-size:22px;font-weight:700;line-height:1.2}.kpi-card .kpi-sub{margin-top:4px;font-size:11px;font-weight:500}.kpi-sub.positive{color:#16a34a}.kpi-sub.negative{color:#dc2626}.kpi-sub.neutral{color:#6b7280}.section-header{margin:32px 0 16px}.section-title{color:#dc2626;margin:0;font-size:20px;font-weight:700}.section-subtitle{color:#dc2626;margin:4px 0 0;font-size:13px;font-weight:600}.chart-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:20px}.chart-card h3{color:#111;margin:0 0 4px;font-size:15px;font-weight:600}.chart-card .chart-desc{color:#9ca3af;margin:0 0 16px;font-size:11px}.chart-card .chart-bottom-desc{color:#9ca3af;white-space:pre-line;border-top:1px solid #f3f4f6;margin:12px 0 0;padding-top:8px;font-size:11px}.grid-2{grid-template-columns:1fr 1fr;gap:16px;display:grid}.grid-3{grid-template-columns:1fr 1fr 1fr;gap:16px;display:grid}.grid-1{grid-template-columns:1fr;gap:16px;display:grid}.data-table{border-collapse:collapse;width:100%;font-size:12px}.data-table th{text-align:left;color:#6b7280;background:#f9fafb;border-bottom:2px solid #e5e7eb;padding:8px 12px;font-weight:600}.data-table td{border-bottom:1px solid #f3f4f6;padding:6px 12px}.data-table tr:hover{background:#f9fafb}.heatmap-cell{text-align:center;border-radius:3px;padding:4px 8px;font-size:11px;font-weight:600}.page-footer{text-align:center;color:#9ca3af;border-top:1px solid #e5e7eb;margin-top:40px;padding:16px 0;font-size:11px}@media (width<=1200px){.kpi-grid-6{grid-template-columns:repeat(3,1fr)}.grid-3{grid-template-columns:1fr 1fr}}@media (width<=768px){.left-nav{width:180px}.main-content{margin-left:180px;padding:16px}.kpi-grid-6,.kpi-grid-4{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-3{grid-template-columns:1fr}}