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

:root {
    --bg: #ffffff;
    --text: #1a1a1a;
    --text-secondary: #666666;
    --border: #e0e0e0;
    --accent: #007aff;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 24px;
}

.header {
    text-align: center;
    margin-bottom: 48px;
}

.icon {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
}

h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
}

.screenshot {
    text-align: center;
    margin-bottom: 48px;
}

.screenshot img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.feature {
    text-align: center;
}

.feature h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

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

.download {
    text-align: center;
    margin-bottom: 48px;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
}

.version {
    margin-top: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.install {
    margin-bottom: 48px;
}

.install h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.install ol {
    padding-left: 24px;
}

.install li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer a {
    color: var(--accent);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .container {
        padding: 40px 20px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
}