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

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

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

/* Header */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo a {
    font-size: 28px;
    font-weight: 700;
    color: #1a4d8c;
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    font-weight: 300;
    color: #888;
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-list li {
    margin-left: 40px;
}

.nav-list a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    font-size: 16px;
}

.nav-list a:hover,
.nav-list a.active {
    color: #1a4d8c;
    border-bottom: 2px solid #1a4d8c;
    padding-bottom: 5px;
}

.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.burger span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero section */
.hero {
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 150px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background-color: #1a4d8c;
    color: #fff;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #0e3a6b;
    transform: scale(1.05);
}

.btn-light {
    background-color: transparent;
    border: 2px solid #fff;
}

.btn-light:hover {
    background-color: #fff;
    color: #1a4d8c;
}

/* Features */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #1a4d8c;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 20px;
}

.feature-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.feature-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #1a4d8c;
}

/* CTA */
.cta {
    background-color: #1a4d8c;
    color: #fff;
    text-align: center;
    padding: 100px 0;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
}

/* Footer */
.footer {
    background-color: #222;
    color: #ccc;
    padding: 50px 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.footer-links a {
    display: block;
    color: #ccc;
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

.footer-contacts p {
    margin-bottom: 5px;
}

/* Page header */
.page-header {
    background-size: cover;
    background-position: center;
    padding: 80px 0;
    color: #fff;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

/* About page */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    padding: 80px 0;
}

.about-text h2 {
    color: #1a4d8c;
    margin: 30px 0 15px;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* Products page */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    padding: 80px 0;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}

.product-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #1a4d8c;
}

.price {
    font-size: 24px;
    font-weight: 700;
    color: #e67e22;
    margin: 15px 0;
}

/* Contacts page */
.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 80px 0;
}

.contact-info h2 {
    color: #1a4d8c;
    margin-bottom: 30px;
}

.contact-info p {
    margin-bottom: 20px;
    font-size: 18px;
}

.contact-info a {
    color: #1a4d8c;
    text-decoration: none;
}

.contact-form h2 {
    color: #1a4d8c;
    margin-bottom: 30px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}

.contact-form button {
    width: 100%;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    .burger {
        display: flex;
    }
    .nav.active .nav-list {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background-color: #fff;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    .nav-list li {
        margin: 10px 0;
    }
    .hero h1 {
        font-size: 32px;
    }
    .about-grid,
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    .page-header h1 {
        font-size: 36px;
    }
}