*{margin:0;padding:0;box-sizing:border-box}:root{--primary:#2563eb;--primary-dark:#1e40af;--secondary:#10b981;--danger:#ef4444;--warning:#f59e0b;--light:#f3f4f6;--dark:#1f2937;--white:#fff;--text:#374151}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:var(--text);background:var(--white)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.navbar{background:var(--white);box-shadow:0 2px 8px rgba(0,0,0,.1);position:-webkit-sticky;position:sticky;top:0;z-index:1000;padding:1rem 0}.navbar .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--primary)}.nav-links{display:flex;list-style:none;gap:2rem;align-items:center}.nav-links a{text-decoration:none;color:var(--text);font-weight:500;transition:color .3s}.nav-links a:hover{color:var(--primary)}.btn-nav{background:var(--primary);color:var(--white)!important;padding:.5rem 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h3{color:var(--dark);margin-bottom:.75rem;font-size:1.25rem}.feature-card p{color:var(--text);line-height:1.6}.how-it-works{padding:5rem 0}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:2rem;gap:2rem}.step{text-align:center;padding:2rem}.step-number{width:60px;height:60px;background:var(--primary);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;margin:0 auto 1rem}.step h3{margin-bottom:.75rem;color:var(--dark)}.cta{background:var(--primary);color:var(--white);padding:4rem 0;text-align:center}.cta h2{font-size:2.5rem;margin-bottom:1rem}.cta p{font-size:1.25rem;margin-bottom:2rem}footer{background:var(--dark);color:var(--white);padding:3rem 0 1rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:2rem;gap:2rem;margin-bottom:2rem}.footer-section h3,.footer-section h4{margin-bottom:1rem}.footer-section a{color:var(--white);text-decoration:none;display:block;margin-bottom:.5rem;opacity:.8;transition:opacity .3s}.footer-section a:hover{opacity:1}.footer-bottom{text-align:center;padding-top:2rem;border-top:1px solid hsla(0,0%,100%,.1);opacity:.8}.dashboard-header{background:var(--primary);color:var(--white);padding:2rem 0;text-align:center}.dashboard-content{padding:3rem 0}.vitals-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:2rem;gap:2rem;margin-bottom:3rem}.vital-card{background:var(--white);padding:1.5rem;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.08)}.vital-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.vital-value{font-size:2.5rem;font-weight:700;color:var(--dark)}.vital-label{color:var(--text);font-size:.875rem;text-transform:uppercase;letter-spacing:1px}.status-badge{padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:600}.status-normal{background:#d1fae5;color:#065f46}.status-warning{background:#fef3c7;color:#92400e}.status-danger{background:#fee2e2;color:#991b1b}.emergency-container{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;padding:2rem}.emergency-panel{background:var(--white);border-radius:20px;padding:3rem;max-width:600px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.3)}.emergency-panel h1{color:var(--danger);text-align:center;margin-bottom:2rem;font-size:2rem}.sos-button{width:200px;height:200px;border-radius:50%;background:var(--danger);color:var(--white);border:8px solid #fca5a5;font-size:2rem;font-weight:700;cursor:pointer;margin:2rem auto;display:block;transition:all .3s;box-shadow:0 8px 24px rgba(239,68,68,.4)}.sos-button:hover{transform:scale(1.05);box-shadow:0 12px 32px 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