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

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #fff;
}

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

.main-header {
    background-color: #0026ff;
    height: 350px;
    padding-top: 30px;
    color: white;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: bold;
    letter-spacing: 1px;
}

.navigation {
    display: flex;
    align-items: center;
    gap: 40px;
}

.navigation ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.navigation ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    position: relative;
    padding-bottom: 5px;
}

.navigation ul li a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: white;
}

.contact-btn {
    background-color: white;
    color: #0026ff;
    padding: 12px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 14px;
}


.content-section {
    margin-top: -180px; 
}

.main-image-wrapper {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.main-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.text-content {
    margin: 40px 0;
}

.text-content h2 {
    font-size: 24px;
    color: #333;
}

.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.thumb img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 15px;
    display: block;
}

@media (max-width: 1023px) {
    .main-header {
        height: auto;
        padding-bottom: 100px;
    }
    
    .navigation {
        display: none;
    }

    .main-image-wrapper {
        margin-top: 20px;
    }

    .main-img {
        height: 300px;
    }
    
    .thumbnail-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .thumbnail-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}