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

:root {
    --bg-dark: #0f1419;
    --bg-card: #1a2332;
    --accent-blue: #3b82f6;
    --accent-blue-hover: #60a5fa;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 560px;
    padding: 2rem 1.5rem;
    text-align: center;
}

.header {
    margin-bottom: 2.5rem;
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.125rem;
    color: var(--accent-blue);
    font-weight: 500;
}

.content {
    margin-bottom: 2.5rem;
}

.description {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 420px;
    margin: 0 auto 1.5rem;
}

.cta {
    display: inline-block;
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid var(--accent-blue);
    transition: color 0.2s, border-color 0.2s;
}

.cta:hover {
    color: var(--accent-blue-hover);
    border-color: var(--accent-blue-hover);
}

.footer {
    padding-top: 2rem;
    border-top: 1px solid rgba(148, 163, 184, 0.15);
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (max-width: 480px) {
    .container {
        padding: 1.5rem 1rem;
    }

    .logo {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .description {
        font-size: 0.9375rem;
    }
}