:root {
    --color-bg: #0f172a;
    --color-text: #f8fafc;
    --color-accent: #6366f1;
    --color-accent-hover: #4f46e5;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero {
    text-align: center;
    padding: 2rem;
    max-width: 720px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.125rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

#cta {
    background: var(--color-accent);
    color: var(--color-text);
    border: none;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

#cta:hover {
    background: var(--color-accent-hover);
}