:root {
    --primary-color: #001F3F; 
    --accent-color: #00BFFF;  
    --text-color: #333333;
    --bg-color: #FFFFFF;
    --light-bg: #f4f4f4;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

h1, h2, h3 {
    color: var(--primary-color);
    font-weight: 700;
}

h1 { font-size: 2rem; } 
h2 { font-size: 1.5rem; }

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
}

.nav-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 15px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

nav a.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 10px;
}

.cta-button:hover {
    background-color: #009ACD; 
}

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

section {
    margin-bottom: 40px;
}

.hero {
    display: flex;
    flex-direction: column; 
    gap: 20px;
    align-items: center;
    text-align: center;
}

.benefit-grid, .product-grid {
    display: grid;
    grid-template-columns: 1fr; 
    gap: 20px;
}

.card, .product-card {
    background: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.product-card {
    text-align: center;
    border: 1px solid #ddd;
}

.product-card.highlight {
    border: 2px solid var(--accent-color);
    position: relative;
}

.badge {
    background-color: var(--accent-color);
    color: white;
    position: absolute;
    top: -10px;
    right: 10px;
    padding: 5px 10px;
    font-size: 0.8rem;
    border-radius: 4px;
}

.price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: var(--primary-color);
    color: white;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

.contact-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box; 
}

footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}

footer a {
    color: var(--accent-color);
}

@media (min-width: 768px) {
    h1 { font-size: 3rem; }
    
    .hero {
        flex-direction: row; 
        text-align: left;
    }
    
    .hero-content {
        flex: 1;
    }
    
    .hero-image {
        flex: 1;
    }

    .benefit-grid, .product-grid {
        grid-template-columns: repeat(3, 1fr); 
    }

    .contact-container {
        flex-direction: row;
        gap: 50px;
    }
    
    .contact-form {
        flex: 2;
    }
    
    .contact-info {
        flex: 1;
    }
}