body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: linear-gradient(180deg, #f5f6f8, #ececec);
    text-align: center;
    color: #333;
}

/* Banner */
.banner {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.banner img {
    width: 75%;
    max-width: 1200px;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}
.btn-extranet {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: #004aad;
    color: white;
    padding: 10px 18px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    font-family: Arial, sans-serif;
    transition: background-color 0.3s;
}

.btn-extranet:hover {
    background-color: #002f73;
}
/* Texto sobre banner */
.banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    background: rgba(0, 0, 0, 0.6);
    padding: 22px 36px;
    border-radius: 10px;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Mensaje */
.mensaje {
    margin: 35px auto 15px;
    font-size: 1.6rem;
    font-weight: 500;
    max-width: 900px;
    line-height: 1.4;
}

/* Video */
.video-container {
    max-width: 900px;
    margin: 25px auto 50px;
    padding: 0 15px;
}

.video-container iframe {
    width: 100%;
    height: 450px;
    border-radius: 12px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15);
    border: none;
}

/* Responsive */
@media (max-width: 600px) {
    .banner img {
        width: 95%;
    }

    .banner-text {
        font-size: 1.3rem;
        padding: 16px 24px;
    }

    .mensaje {
        font-size: 1.4rem;
    }

    .video-container iframe {
        height: 250px;
    }
}