:root {
    --bg-color: #202124;
    --card-bg: #292a2d;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --accent: #8ab4f8;
    --border: #3c4043;
    --hover: #35363a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    margin-bottom: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.logo {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
}

h1 {
    font-size: 2.5rem;
    margin: 0 0 10px 0;
    font-weight: 700;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

.version-section {
    margin-bottom: 60px;
}

.version-header {
    display: flex;
    align-items: baseline;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.version-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
    margin-right: 15px;
}

.version-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.subcategory-title {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 24px 0 16px 0;
    font-weight: 500;
    padding-left: 4px;
    border-left: 3px solid var(--accent);
    line-height: 1;
}

.engine-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.engine-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    cursor: default;
}

.engine-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    background-color: var(--hover);
    border-color: var(--accent);
}

.engine-icon {
    width: 32px;
    height: 32px;
    margin-right: 12px;
    object-fit: contain;
}

.engine-name {
    font-weight: 500;
    font-size: 0.95rem;
}

.engine-tag {
    margin-left: auto;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(138, 180, 248, 0.1);
    color: var(--accent);
}

footer {
    text-align: center;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.support-email {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.support-email:hover {
    text-decoration: underline;
}

.legal-notice {
    margin-top: 20px;
    font-size: 0.8rem;
    opacity: 0.7;
}

@media (max-width: 600px) {
    .engine-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    h1 {
        font-size: 2rem;
    }
}