* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #004080;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

.logo h1 {
    font-size: 2rem;
    font-weight: bold;
}

.hero {
    padding: 3rem;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    color: #004080;
}

.promotion, .planes, .duv-promotion, .courses, .blogs, .tools {
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 2rem;
    background-color: #eef4f7;
    flex-wrap: wrap;
    text-align: center;
}

.promo-image img, .plane-image img, .duv-image img, .course-image img, .blog-image img, .tools-image img {
    width: 300px;
    height: auto;
    border-radius: 10px;
}

.promo-content, .plane, .duv-content, .course-content, .blog-content, .tools-content {
    max-width: 50%;
    margin-bottom: 1rem;
}

.promo-content h3, .plane h3, .duv-content h3, .course-content h3, .blog-content h3, .tools-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #004080;
}

.promo-content ul, .plane ul, .duv-content ul, .course-content ul, .blog-content ul, .tools-content ul {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 0;
}

.promo-content ul li, .plane ul li, .duv-content ul li, .course-content ul li, .blog-content ul li, .tools-content ul li {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: #ff6b6b;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.1rem;
}

/* Ajustes para centralização e responsividade */
.promotion, .planes, .duv-promotion, .courses, .blogs, .tools {
    flex-direction: column;
}

.promo-content, .plane, .duv-content, .course-content, .blog-content, .tools-content {
    max-width: 100%;
    margin: 0 auto;
}

.promo-image img, .plane-image img, .duv-image img, .course-image img, .blog-image img, .tools-image img {
    margin: 0 auto;
    display: block;
}

/* Ajustes para seções adicionais */
.courses, .blogs, .tools {
    background-color: #ffffff;
    padding: 3rem;
}

.courses img, .blogs img, .tools img {
    border-radius: 10px;
    width: 250px;
    height: auto;
}

footer {
    background-color: #004080;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

footer h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

footer p {
    font-size: 1.1rem;
}