body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f6f9;
    color: #2c2c2c;
}

.page-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 1200px;
    margin: 10px auto 40px;
    padding: 0 20px;
    box-sizing: border-box;
}

.back-link {
    position: absolute;
    left: 40px;
    top: 110px;
    color: #1E3A5F;
    font-size: 28px;
    transition: color 0.3s ease, transform 0.3s ease;
    z-index: 10;
}

.back-link:hover {
    color: #2C7DA0;
    transform: scale(1.08);
}

.main-title {
    font-size: 3rem;
    color: #003b6f;
    text-align: center;
    margin: 50px 0 20px;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 1px;
    position: relative;
}

.main-title::after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background-color: #0077b6;
    margin: 12px auto 0;
    border-radius: 2px;
}

.contenedor {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    width: 100%;
    box-sizing: border-box;
    margin-top: 20px;
}

.anexos-listado {
    display: grid;
    grid-template-columns: repeat(2, minmax(260px, 1fr));
    gap: 16px;
}

.anexo-card {
    display: block;
    text-decoration: none;
    color: #1E3A5F;
    background: #ffffff;
    border: 1px solid #dbe4ec;
    border-radius: 10px;
    padding: 16px 18px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: all 0.25s ease;
}

.anexo-card:hover {
    background-color: #eaf3f9;
    transform: translateY(-2px);
    border-color: #2C7DA0;
}

.contenedor-video {
    max-width: 900px;
}

.video-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: black;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.empty-state {
    font-size: 1.05rem;
    color: #555;
    text-align: center;
    padding: 30px 15px;
}

@media (max-width: 768px) {
    .main-title {
        font-size: 2.2rem;
    }

    .contenedor {
        padding: 20px;
    }

    .anexos-listado {
        grid-template-columns: 1fr;
    }

    .back-link {
        left: 20px;
        top: 105px;
    }
}