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

body {
    background: #0d1117;
    color: white;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    line-height: 1.6;
}

.container {
    width: min(900px, 90%);
    margin: auto;
}

header {
    padding: 80px 0 40px;
    text-align: center;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

.tagline {
    color: #9ca3af;
    margin-top: 16px;
    font-size: 1.2rem;
}

.hero {
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.hero p {
    color: #c9d1d9;
    margin-bottom: 40px;
}

.button {
    display: inline-block;
    background: #2563eb;
    color: white;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 8px;
    transition: background .2s;
}

.button:hover {
    background: #1d4ed8;
}

footer {
    margin-top: 100px;
    padding: 30px;
    text-align: center;
    color: #888;
    border-top: 1px solid #222;
}