body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
    color: #333;
    text-align: center;
}

.container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tagline {
    margin: 0.25rem 0 0;
    font-size: 1.1rem;
    color: #555;
    font-weight: 500;
}

.intro {
    text-align: left;
    line-height: 1.5;
    margin: 1.25rem 0 1.5rem;
    color: #444;
}

.features {
    margin-top: 2rem;
    text-align: left;
}

.features h2 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.features ul {
    margin: 0;
    padding-left: 1.25rem;
    line-height: 1.6;
    color: #444;
}

.site-footer {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: #666;
}

.site-footer a {
    color: #007bff;
}

.controls {
    margin-bottom: 20px;
}

select,
button {
    padding: 10px 15px;
    font-size: 16px;
    border-radius: 4px;
    border: 1px solid #ccc;
    margin: 5px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0056b3;
}

video {
    width: 100%;
    max-width: 640px;
    border-radius: 6px;
    background-color: #000;
    transform: scaleX(1);
}

.error {
    color: #dc3545;
    margin-top: 15px;
    font-weight: bold;
}