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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #ffffff;
    color: #000000;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

main {
    padding: 24px;
    width: 100%;
    max-width: 420px;
}

.card {
    text-align: center;
    padding: 48px 32px;
}

.logo {
    margin-bottom: 16px;
}

.logo img {
    border-radius: 20px;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #000000;
}

.tagline {
    color: rgba(0, 0, 0, 0.6);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 40px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #000000;
    color: #ffffff;
    text-decoration: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: background 0.2s;
}

.download-btn:hover {
    background: #333333;
}

.download-icon {
    font-size: 1.2rem;
}

.version {
    font-size: 0.85rem;
    opacity: 0.8;
}