body {
    background: linear-gradient(120deg, #0072ff 0%, #00c6ff 100%);
    min-height: 100vh;
    font-family: 'Montserrat', 'Segoe UI', Arial, sans-serif;
    margin: 0;
}
.container-videos {
    max-width: 900px;
    margin: 40px auto;
    background: rgba(255,255,255,0.97);
    border-radius: 22px;
    box-shadow: 0 8px 32px 0 rgba(44, 62, 80, 0.18);
    padding: 36px 28px 28px 28px;
    text-align: center;
}
h1 {
    color: #0072ff;
    font-size: 2rem;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: 1px;
}
.videos-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    justify-content: center;
}
.videos-grid video {
    width: 320px;
    height: 180px;
    border-radius: 18px;
    box-shadow: 0 4px 24px 0 rgba(44, 62, 80, 0.10);
    background: #fff;
    object-fit: cover;
    transition: transform 0.25s, box-shadow 0.25s;
}
.videos-grid video:hover {
    transform: scale(1.05) translateY(-6px);
    box-shadow: 0 8px 32px 0 rgba(44,62,80,0.18);
}
.btn-voltar {
    display: inline-block;
    margin-top: 32px;
    padding: 10px 26px;
    background: linear-gradient(90deg, #00c6ff 0%, #0072ff 100%);
    color: #fff;
    font-weight: 600;
    border-radius: 18px;
    text-decoration: none;
    font-size: 1rem;
    box-shadow: 0 2px 12px 0 rgba(44,62,80,0.10);
    transition: background 0.2s, transform 0.2s;
}
.btn-voltar:hover {
    background: linear-gradient(90deg, #0072ff 0%, #00c6ff 100%);
    transform: scale(1.05);
}
@media (max-width: 700px) {
    .videos-grid video {
        width: 98vw;
        max-width: 98vw;
        height: 200px;
    }
    .container-videos {
        padding: 16px 2vw;
    }
}