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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa
}

.header {
    background: linear-gradient(135deg, #1a237e 0%, #3949ab 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    transition: opacity .3s;
    padding: 8px 15px;
    border-radius: 4px
}

.nav-menu a:hover {
    opacity: .8;
    background: rgba(255,255,255,.1)
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,.2)
}

.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: transform .3s, box-shadow .3s;
    margin: 10px
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,.2)
}

.btn-primary {
    background: #ff6b6b;
    color: white
}

.section {
    padding: 60px 0
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #1a237e;
    position: relative
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #667eea, #764ba2);
    margin: 15px auto 0;
    border-radius: 2px
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px
}

.product-card {
    background: white;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
    transition: transform .3s, box-shadow .3s
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,.15)
}

.product-icon {
    font-size: 48px;
    margin-bottom: 20px
}

.product-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a237e
}

.product-card p {
    color: #666;
    line-height: 1.8
}

.news-list {
    max-width: 900px;
    margin: 0 auto
}

.news-item {
    background: white;
    padding: 25px 30px;
    margin-bottom: 20px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    box-shadow: 0 2px 10px rgba(0,0,0,.05);
    transition: all .3s
}

.news-item:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,.1);
    transform: translateX(5px)
}

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 8px
}

.news-title {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600
}

.news-desc {
    color: #666;
    line-height: 1.7
}

.about-content {
    background: white;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08)
}

.about-text {
    font-size: 16px;
    line-height: 2;
    color: #555;
    margin-bottom: 25px
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px
}

.feature-item {
    padding: 25px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #667eea
}

.feature-item strong {
    color: #1a237e;
    display: block;
    margin-bottom: 8px;
    font-size: 17px
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px
}

.contact-card {
    background: white;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
    text-align: center
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px
}

.contact-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a237e
}

.contact-card p {
    color: #666;
    line-height: 1.8
}

.footer {
    background: #1a237e;
    color: white;
    padding: 40px 0 20px;
    margin-top: 60px
}

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

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #fff
}

.footer-section ul {
    list-style: none
}

.footer-section ul li {
    margin-bottom: 8px
}

.footer-section a {
    color: rgba(255,255,255,.8);
    text-decoration: none;
    transition: color .3s
}

.footer-section a:hover {
    color: white
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.6)
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 50px 0
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,.1);
    border-radius: 12px
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    display: block;
    margin-bottom: 10px
}

.stat-label {
    font-size: 16px;
    opacity: .9
}

.advantages {
    background: white;
    padding: 50px;
    border-radius: 12px;
    margin-top: 40px
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px
}

.advantage-item {
    padding: 30px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    text-align: center
}

.advantage-icon {
    font-size: 52px;
    margin-bottom: 18px
}

.advantage-item h4 {
    font-size: 19px;
    color: #1a237e;
    margin-bottom: 12px
}

.advantage-item p {
    color: #555;
    line-height: 1.7;
    font-size: 14px
}

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 10px
    }
    
    .hero h1 {
        font-size: 32px
    }
    
    .section-title {
        font-size: 28px
    }
    
    .about-content,
    .advantages {
        padding: 30px 20px
    }
}