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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #ff6b35;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: #ff6b35;
}

.hero {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: #fff;
    padding: 120px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 24px;
}

.section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #f0f0f0;
}

.product-card .content {
    padding: 25px;
}

.product-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: #333;
}

.product-card p {
    color: #666;
    font-size: 14px;
}

.application-form {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b35;
}

.btn {
    padding: 14px 30px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #ff6b35;
    color: #fff;
}

.btn-primary:hover {
    background: #e55a2b;
}

.btn-secondary {
    background: #666;
    color: #fff;
}

.btn-secondary:hover {
    background: #555;
}

.cooperation-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 30px 20px;
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }

    .application-form {
        padding: 25px;
    }
}