:root {
    --bg: #0f0f12;
    --card: #15151a;
    --accent: #2dd4bf;
    color-scheme: dark;
}

* {
    box-sizing: border-box
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial;
    background: var(--bg);
    color: #eee
}

header {
    padding: 20px;
    text-align: center;
    background: var(--card)
}

nav a {
    color: var(--accent);
    text-decoration: none;
    margin: 0 8px
}

main {
    padding: 30px;
    text-align: center
}

iframe {
    display: block;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: 0 6px 30px rgba(0, 0, 0, .6)
}