.app{max-width:1200px;margin:0 auto;padding:20px}header{text-align:center;padding:40px 0;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:12px;margin-bottom:30px}header h1{font-size:3rem;margin-bottom:10px}header p{font-size:1.2rem;opacity:.9}main{background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 8px #0000001a}.health-check{background:#e8f5e9;padding:15px;border-radius:8px;margin-bottom:20px;border-left:4px solid #4caf50}.health-check strong{color:#2e7d32;text-transform:uppercase}.welcome{margin-bottom:30px}.welcome h2{color:#333;margin-bottom:15px}.welcome p{color:#666;margin-bottom:15px;line-height:1.6}.welcome ul{list-style:none;padding-left:0}.welcome li{padding:10px 0 10px 25px;position:relative;color:#555}.welcome li:before{content:"✓";position:absolute;left:0;color:#667eea;font-weight:700}.placeholder{background:#fff3e0;padding:20px;border-radius:8px;text-align:center;border:2px dashed #ff9800}.placeholder p{margin:10px 0;color:#f57c00;font-weight:500}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}#root{min-height:100vh}