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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 50px;
    width: auto;
}

.logo-text h1 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    color: #8B4513;
    margin-bottom: 0.2rem;
}

.logo-text p {
    font-size: 0.9rem;
    color: #666;
}

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

.nav-menu li {
    margin-left: 2rem;
}

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

.nav-link:hover {
    color: #8B4513;
}

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

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

.hero {
    padding-top: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    background: linear-gradient(135deg, #e8f5e9 0%, #f3e5f5 100%);
}

.hero-content {
    text-align: center;
    padding: 2rem;
    max-width: 800px;
}

.hero-content h2 {
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    color: #8B4513;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #8B4513;
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    background: #a0522d;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 69, 19, 0.3);
}

.hero-image {
    flex: 1;
    padding: 2rem;
}

.hero-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    text-align: center;
    color: #8B4513;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: #8B4513;
}

.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    color: #8B4513;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #8B4513;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 1.5rem;
    text-align: justify;
    line-height: 1.8;
}

.expert-photo {
    text-align: center;
    margin: 2rem 0;
}

.expert-photo img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.photo-caption {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
}

.achievements {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.achievement-item {
    text-align: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.achievement-item .number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #228B22;
}

.achievement-item .label {
    font-size: 0.9rem;
    color: #081c15;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.products {
    padding: 80px 0;
    background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: #fff;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    margin-bottom: 1rem;
    overflow: hidden;
    border-radius: 10px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: #8B4513;
    margin-bottom: 0.5rem;
}

.product-info p {
    font-size: 0.95rem;
    color: #666;
}

.news {
    padding: 80px 0;
    background: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.news-card {
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.news-card:hover {
    transform: translateY(-3px);
    background: #fff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.news-date {
    font-size: 0.85rem;
    color: #8B4513;
    margin-bottom: 1rem;
}

.news-card h3 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.news-card p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    color: #8B4513;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

.read-more:hover {
    text-decoration: underline;
}

.videos {
    padding: 80px 0;
    background: #fff;
}

.videos-grid {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

#videos .container {
    max-width: 1400px;
    width: 100%;
}

.video-card {
    min-width: 0;
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 2;
    background: #000;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-info {
    padding: 1rem;
    text-align: center;
}

.video-info h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1rem;
    color: #8B4513;
    margin: 0;
}

.gallery {
    padding: 80px 0;
    background: linear-gradient(135deg, #e8f5e9 0%, #f3e5f5 100%);
}

.gallery-text {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
}

.contact {
    padding: 80px 0;
    background: #fff;
}

.contact-content {
    display: flex;
    gap: 3rem;
}

.contact-info {
    flex: 1;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.contact-item i {
    font-size: 2rem;
    color: #8B4513;
    margin-right: 1.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.contact-item h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 0.3rem;
}

.contact-item p {
    font-size: 0.95rem;
    color: #666;
}

.douyin-qr {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    margin-top: 0.5rem;
    object-fit: cover;
}

.contact-form {
    flex: 1;
}

.contact-form form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #8B4513;
}

.form-group textarea {
    resize: vertical;
}

.location-map {
    margin-top: 3rem;
    text-align: center;
}

.location-map img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin-top: 1.5rem;
}

.footer {
    background: #2c3e50;
    color: #fff;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #d4a574;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #d4a574;
}

.footer-section p {
    font-size: 0.9rem;
    color: #bdc3c7;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #d4a574;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    font-size: 0.85rem;
    color: #bdc3c7;
}

.footer-bottom a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #d4a574;
}

.police-icon {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    margin-right: 4px;
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 1rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .about-content {
        flex-direction: column;
    }

    .achievements {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-content {
        flex-direction: column;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .achievements {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }
}