* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 2.5rem;
}

.subtitle {
    color: #7f8c8d;
    font-size: 1.2rem;
}

.video-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
}

.video-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    width: 100%;
    max-width: 560px;
}

.video-card:hover {
    transform: translateY(-5px);
}

.video-wrapper {
    position: absolute;
    padding-bottom: 56.25%; /* Relación de aspecto 16:9 */
    height: 0;
    overflow: hidden;
}

.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.video-info p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.instructions {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.instructions h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.instructions ol {
    margin-left: 20px;
    line-height: 1.6;
}

.instructions li {
    margin-bottom: 10px;
}

footer {
    text-align: center;
    margin-top: 40px;
    color: #7f8c8d;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .video-container {
        flex-direction: column;
        align-items: center;
    }
    
    .video-card {
        margin-bottom: 20px;
    }
}