*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f5f5f7}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:#00695c;color:#fff}.logo-wrapper{display:flex;align-items:center;gap:12px}.app-logo{width:40px;height:40px}.app-title{font-size:1.2rem;font-weight:600}.nav{display:flex;gap:16px}.nav-link{color:#fff;text-decoration:none;font-weight:500;padding:6px 10px;border-radius:4px;transition:background .2s ease}.nav-link:hover{background:#ffffff26}.app-main{flex:1;padding:24px;max-width:900px;margin:0 auto}.app-main h1{margin-top:0}.contacts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}.contact-card{background:#fff;border-radius:8px;padding:16px;box-shadow:0 2px 6px #0000000f}.not-found{text-align:center}.not-found code{background:#eee;padding:2px 4px;border-radius:4px}.btn{display:inline-block;margin-top:16px;padding:8px 16px;border-radius:4px;text-decoration:none;font-weight:500;border:1px solid #282c34;color:#282c34}.btn:hover{background:#282c34;color:#fff}.app-footer{text-align:center;padding:12px 24px;font-size:.85rem;color:#555;background:#e5e5ea}