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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 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: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 24px;
    color: #2c5f2d;
}

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

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #2c5f2d;
}

.hero {
    background: linear-gradient(135deg, #2c5f2d 0%, #4a7c59 100%);
    color: #fff;
    padding: 200px 0 100px;
    text-align: center;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 24px;
    opacity: 0.9;
}

section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #2c5f2d;
}

.about {
    background: #f9f9f9;
}

.about-content p {
    font-size: 18px;
    line-height: 2;
    margin-bottom: 20px;
    text-align: justify;
}

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

.product-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #2c5f2d;
}

.product-card p {
    color: #666;
    font-size: 16px;
}

.certificates {
    background: #f9f9f9;
}

.certificate-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.certificate-item {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.certificate-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.certificate-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #2c5f2d;
}

.certificate-item p {
    color: #666;
    font-size: 15px;
}

.license-info {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.license-info h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #2c5f2d;
}

.license-info p {
    color: #666;
    font-size: 16px;
}

.service-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.service-item {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-left: 5px solid #2c5f2d;
}

.service-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #2c5f2d;
}

.service-item p {
    color: #666;
    font-size: 16px;
    line-height: 1.8;
}

.contact {
    background: #f9f9f9;
}

.contact-info {
    background: #fff;
    padding: 50px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.contact-info p {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}

footer {
    background: #2c5f2d;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

footer p {
    margin-bottom: 10px;
}

footer .icp {
    font-size: 14px;
    opacity: 0.8;
}

footer .icp a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

footer .icp a:hover {
    opacity: 1;
    text-decoration: underline;
}

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

    nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 10px 15px;
    }

    .hero h2 {
        font-size: 32px;
    }

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

    section h2 {
        font-size: 28px;
    }

    .product-grid,
    .certificate-list,
    .service-content {
        grid-template-columns: 1fr;
    }
}