:root{--font-sans:"Noto Sans JP", sans-serif;--fs-xs:10px;--fs-sm:11px;--fs-base:12px;--fs-md:13px;--fs-lg:15px;--fs-xl:20px;--fs-2xl:22px;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-light:#eff6ff;--color-success:#22c55e;--color-success-text:#15803d;--color-error:#ef4444;--color-error-text:#dc2626;--color-bg:#f7f8fa;--color-surface:#fff;--color-border:#e2e5ea;--color-text-primary:#1a202c;--color-text-secondary:#4a5568;--color-text-tertiary:#6b7280;--color-text-muted:#8b919a;--color-gray-50:#f7f8fa;--color-gray-100:#f0f1f4;--color-gray-200:#e2e5ea;--color-gray-300:#cdd1d8;--color-gray-900:#1a202c;--shadow-xs:0 1px 2px #0000000a;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 2px 8px #00000014;--shadow-lg:0 4px 16px #0000001f;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text-primary);-webkit-font-smoothing:antialiased}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:2px}button:focus-visible,a:focus-visible,[role=button]:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.skip-link{z-index:1000;background:var(--color-primary);color:#fff;border-radius:0 0 var(--radius-md) 0;padding:8px 16px;font-weight:700;text-decoration:none;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}.app-layout{min-height:100vh;display:flex}.left-nav{background:var(--color-gray-900);color:#fff;z-index:100;flex-direction:column;width:220px;padding:20px 0;display:flex;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}.left-nav .hotel-name{font-size:var(--fs-lg);border-bottom:1px solid #ffffff1a;margin-bottom:8px;padding:0 20px 20px;font-weight:700}.left-nav .nav-item{color:#ffffffb3;font-size:var(--fs-md);border-left:3px solid #0000;padding:12px 20px;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;border-left-color:var(--color-primary);background:#ffffff1a;font-weight:700}.left-nav .nav-label{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:1px;color:#fff6;padding:16px 20px 8px}.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{font-size:var(--fs-2xl);color:var(--color-text-primary);font-weight:700}.month-badge{background:var(--color-primary);color:#fff;border-radius:var(--radius-md);font-size:var(--fs-lg);padding:6px 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16px}.section-title{font-size:var(--fs-xl);color:var(--color-primary);margin:0;font-weight:700}.section-subtitle{font-size:var(--fs-md);color:var(--color-primary);margin:4px 0 0;font-weight:600}.chart-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:20px}.chart-card h3{font-size:var(--fs-lg);color:var(--color-text-primary);margin:0 0 4px;font-weight:600}.chart-card .chart-desc{font-size:var(--fs-sm);color:var(--color-text-muted);margin:0 0 16px}.chart-card .chart-bottom-desc{font-size:var(--fs-sm);color:var(--color-text-muted);border-top:1px solid var(--color-gray-100);white-space:pre-line;margin:12px 0 0;padding-top:8px}.grid-2{grid-template-columns:1fr 1fr;gap:16px;display:grid}.grid-2>*,.grid-3>*{min-width:0;overflow:hidden}.grid-3{grid-template-columns:1fr 1fr 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