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

html {
    scroll-behavior: smooth;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #8B4513;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

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

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

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

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

.lang-switch {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #8B4513;
    background: white;
    color: #8B4513;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.lang-btn:hover {
    background: #f5f5dc;
}

.lang-btn.active {
    background: #8B4513;
    color: white;
}

.mobile-lang-switch {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid #eee;
    margin-top: 0.5rem;
}

body.en .cn {
    display: none;
}

body.cn .en {
    display: none;
}

body.en {
    font-family: 'Roboto', sans-serif;
}

body.cn {
    font-family: 'Noto Sans SC', sans-serif;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-nav ul {
    list-style: none;
    padding: 1rem;
}

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

.mobile-nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 2rem 4rem;
    background: linear-gradient(135deg, #f5f5dc 0%, #d4a574 100%);
    min-height: 100vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: #8B4513;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #5a3d2b;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: #8B4513;
    color: white;
}

.btn-primary:hover {
    background: #6B3410;
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: #8B4513;
    border: 2px solid #8B4513;
}

.btn-secondary:hover {
    background: #8B4513;
    color: white;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

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

.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    background: #f8f8f8;
    border-radius: 10px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2.5rem;
    color: #8B4513;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.feature-card p {
    color: #666;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #8B4513;
    margin-bottom: 1rem;
}

.section-header p {
    color: #666;
    font-size: 1.1rem;
}

.products {
    padding: 4rem 2rem;
    background: #f8f8f8;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

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

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    color: #8B4513;
    margin-bottom: 0.5rem;
}

.product-info p {
    color: #666;
    margin-bottom: 1rem;
}

.product-price {
    display: inline-block;
    background: #8B4513;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-weight: 500;
}

.about {
    display: flex;
    align-items: center;
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
}

.about-content {
    flex: 1;
}

.about-content h2 {
    font-size: 2.5rem;
    color: #8B4513;
    margin-bottom: 1.5rem;
}

.about-content p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #8B4513;
}

.stat-label {
    color: #666;
}

.about-image {
    flex: 1;
}

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

.contact {
    padding: 4rem 2rem;
    background: #f8f8f8;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: #8B4513;
    flex-shrink: 0;
}

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

.contact-item p {
    color: #666;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form button {
    padding: 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.contact-form button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.captcha-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.captcha-input-wrapper {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.captcha-input-wrapper input {
    flex: 1;
}

.captcha-input-wrapper img {
    border-radius: 5px;
    cursor: pointer;
    border: 1px solid #ddd;
    height: 40px;
    transition: transform 0.2s;
}

.captcha-input-wrapper img:hover {
    transform: scale(1.05);
}

.footer {
    background: #333;
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 0.5rem;
}

.footer p {
    color: #aaa;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-social a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #666;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 1rem 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-image {
        margin-top: 2rem;
    }
    
    .features {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .about {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }
    
    .about-content h2 {
        font-size: 2rem;
    }
    
    .about-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .features {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-content h2 {
        font-size: 1.8rem;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

.mobile-nav.active {
    display: block;
}