:root{--bg-white:#fff;--bg-light-gray:#f8f9fa;--bg-card:#fff;--text-primary:#1a1a1a;--text-secondary:#6b7280;--text-disabled:#9ca3af;--medical-blue:#2563eb;--clinical-green:#059669;--warning-amber:#d97706;--critical-red:#dc2626;--info-teal:#0891b2;--border-light:#e5e7eb;--border-medium:#d1d5db;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 1px 3px #0000001a,0 1px 2px #0000000f;--shadow-lg:0 10px 15px #0000001a,0 4px 6px #0000000d;--pheno-nocturnal:#eff6ff;--pheno-evening:#f3e8ff;--pheno-daytime:#fff7ed;--pheno-persistent:#fee2e2;--pheno-nonaf:#ecfdf5;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"JetBrains Mono","Fira Code",monospace}*{box-sizing:border-box}body{background:var(--bg-light-gray);color:var(--text-primary);font-family:var(--font-sans);margin:0;padding:0;line-height:1.6;overflow-x:hidden}@keyframes pulse-red{0%{box-shadow:0 0 #ef444466}70%{box-shadow:0 0 0 6px #ef444400}to{box-shadow:0 0 #ef444400}}@keyframes 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.2s}.nav-link:hover{color:var(--medical-blue)}.nav-link.active{color:var(--medical-blue);border-bottom-color:var(--medical-blue)}.disclaimer-banner{background:var(--warning-amber);color:#fff;text-align:center;letter-spacing:.5px;padding:8px 24px;font-size:.85rem;font-weight:600}.sidebar-brand{align-items:center;gap:12px;margin-bottom:32px;display:flex}.brand-text{letter-spacing:-.02em;background:linear-gradient(135deg,#fff 0%,#94a3b8 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.25rem;font-weight:700}.nav-item{color:var(--fg-secondary);cursor:pointer;border:1px solid #0000;border-radius:8px;align-items:center;gap:12px;padding:12px 16px;font-size:.95rem;font-weight:500;transition:all 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#2563eb26}.card-header{align-items:center;gap:16px;margin-bottom:16px;display:flex}.card-icon{border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;font-size:24px;display:flex}.card-title{color:var(--text-primary);margin:0 0 8px;font-size:1.25rem;font-weight:700}.card-text{color:var(--text-secondary);margin:0;line-height:1.6}.btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:12px 24px;font-family:inherit;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.btn-primary{background:var(--medical-blue);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{box-shadow:var(--shadow-lg);background:#1d4ed8;transform:translateY(-1px)}.btn-secondary{background:var(--bg-white);color:var(--medical-blue);border:2px solid var(--medical-blue)}.btn-secondary:hover{background:var(--medical-blue);color:#fff}.btn-large{padding:16px 32px;font-size:1.1rem}h1{letter-spacing:-.03em;color:var(--text-primary);margin:0 0 16px;font-size:3rem;font-weight:700;line-height:1.2}h2{letter-spacing:-.02em;color:var(--text-primary);margin:0 0 16px;font-size:2rem;font-weight:700;line-height:1.3}h3{letter-spacing:-.02em;color:var(--text-primary);margin:0 0 12px;font-size:1.5rem;font-weight:600}.subtitle{color:var(--text-secondary);margin:0;font-size:1.1rem;line-height:1.6}.label-uppercase{text-transform:uppercase;letter-spacing:.1em;color:var(--text-secondary);font-size:.75rem;font-weight:700}.hero{text-align:left;background:var(--bg-white);padding:80px 24px 60px;position:relative;overflow:hidden}.hero:before{content:"";background:var(--pheno-nocturnal);opacity:.3;z-index:0;border-radius:50%;width:600px;height:600px;position:absolute;top:-50%;right:-10%}.hero>*{z-index:1;position:relative}.hero h1{max-width:800px;margin-bottom:24px;font-size:3.5rem;line-height:1.1}.hero .subtitle{max-width:700px;margin:0 auto 40px;font-size:1.25rem}.hero-buttons{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.badge{border-radius:20px;align-items:center;gap:8px;padding:6px 12px;font-size:.85rem;font-weight:600;display:inline-flex}.badge-warning{background:var(--warning-amber);color:#fff}.badge-success{background:var(--clinical-green);color:#fff}.grid-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;display:grid}.grid-3>:nth-child(2){transform:translateY(20px)}.grid-3>:nth-child(3){transform:translateY(40px)}.grid-4{grid-template-columns:repeat(4,1fr);gap:24px;display:grid}.metric-card{text-align:center;padding:32px}.metric-value{color:var(--medical-blue);margin-bottom:8px;font-size:3rem;font-weight:700;line-height:1}.metric-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.9rem;font-weight:600}.disclaimer-box{border-left:4px solid var(--warning-amber);background:#fff7ed;border-radius:8px;margin:24px 0;padding:16px 20px}.disclaimer-box p{color:var(--text-primary);margin:0;font-size:.95rem}@media (max-width:768px){.container{padding:0 16px}.section{padding:40px 0}.nav-header{position:relative}.nav-container{flex-direction:column;gap:16px;height:auto;padding:16px}.nav-links{flex-direction:column;gap:8px;width:100%}.nav-link{text-align:center;background:var(--bg-light-gray);border-radius:8px;width:100%;padding:12px}.hero h1{font-size:2rem}.hero .subtitle{font-size:1rem}.hero-buttons{flex-direction:column;width:100%}.btn-large{justify-content:center;width:100%}.grid-3,.grid-4{grid-template-columns:1fr}h1{font-size:2rem}h2{font-size:1.5rem}.demo-layout{grid-template-columns:1fr!important;gap:20px!important;margin-top:20px!important}.demo-header{padding:40px 16px 30px!important}.demo-header h1{font-size:1.8rem!important}.demo-header p{font-size:1rem!important}.demo-metrics-grid{grid-template-columns:1fr!important;gap:16px!important}.demo-charts-grid{grid-template-columns:1fr!important;gap:20px!important}.demo-phenotype-card{padding:24px 20px!important}.demo-phenotype-card h2{font-size:1.6rem!important}.demo-phenotype-emoji{font-size:40px!important}.demo-metric-value{font-size:2.2rem!important}.demo-signal-card{padding:20px 16px!important}.demo-signal-card h3{font-size:1.1rem!important}.demo-episode-table{padding:20px 16px!important}.demo-episode-table h3{font-size:1.1rem!important}table{font-size:.8rem}.metric-value{font-size:2rem}.demo-content-area{min-height:200px}}@media (min-width:769px) and (max-width:1280px){.grid-4{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:2.5rem}}@media (max-width:1024px){.demo-layout{grid-template-columns:1fr}}.btn:focus,.nav-link:focus,a:focus{outline:3px solid var(--medical-blue);outline-offset:2px}.skip-link{background:var(--medical-blue);color:#fff;z-index:1000;padding:8px 16px;text-decoration:none;position:absolute;top:-40px;left:0}.skip-link:focus{top:0}@media (prefers-contrast:high){:root{--text-primary:#000;--text-secondary:#1a1a1a;--border-light:#000}}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media print{.nav-header,.disclaimer-banner,footer,.btn{display:none}body{background:#fff}.card{break-inside:avoid}}