* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #1e1e1e;
    color: #fff;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

header {
    text-align: center;
}

header h1 {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ff4444, #ff8800);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}