/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 1rem 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo h1 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #ffd700;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links li a:hover:after {
    width: 100%;
}

/* 英雄区域样式 */
#hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                url('../images/hero-bg.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-content {
    max-width: 800px;
    padding: 2rem;
    z-index: 1;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: #ffd700;
    color: #000;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* 产品展示区样式 */
#products {
    padding: 5rem 2rem;
    background-color: #fff;
}

#products h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-grid {
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.product-card {
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: all 0.3s ease;
}

.product-card:hover img {
    transform: scale(1.05);
}

.product-card h3 {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 1.5rem;
    color: #333;
}

.product-card p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
}

/* 关于我们样式 */
#about {
    padding: 5rem 2rem;
    background-color: #f5f5f5;
}

#about h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: #666;
}

/* 联系我们样式 */
#contact {
    padding: 5rem 2rem;
    background-color: #fff;
}

#contact h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: #f5f5f5;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 1rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

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

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

.contact-form button {
    padding: 1rem 2rem;
    background-color: #ffd700;
    color: #000;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    background-color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 4rem 2rem 1rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    margin-right: 1rem;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #ffd700;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

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

.footer-section ul li a:hover {
    color: #ffd700;
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-links {
        margin-top: 1rem;
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }

    .product-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .product-card {
        width: 100%;
        max-width: 100%;
    }
}

/* 产品详情页样式 */
#product-detail {
    padding: 8rem 2rem 5rem;
    background-color: #fff;
}

.product-detail-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

.product-image {
    flex: 1;
    max-width: 50%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.main-image {
    width: 100%;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.main-image img {
    max-width: 100%;
    height: auto;
    object-fit: contain; /* 确保图片完整显示 */
}


.main-image img:hover {
    transform: scale(1.05);
}

.thumbnail-images {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
    flex-wrap: wrap;
}

.thumbnail {
    width: 90px;
    height: 90px;
    border-radius: 5px;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.thumbnail:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.thumbnail.active {
    opacity: 1;
    border-color: #ffd700;
}

.product-info {
    flex: 1;
    max-width: 50%;
}

.product-info h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1.5rem;
}

.product-description {
    margin-bottom: 2rem;
}

.product-description p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.product-features {
    list-style: none;
}

.product-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-features i {
    color: #ffd700;
    font-size: 1.2rem;
}

.product-specs {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: #f5f5f5;
    border-radius: 10px;
}

.product-specs h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.product-specs ul {
    list-style: none;
}

.product-specs li {
    margin-bottom: 0.5rem;
    color: #666;
}

.product-contact {
    padding: 1.5rem;
    background-color: #f5f5f5;
    border-radius: 10px;
}

.product-contact h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.product-contact p {
    color: #666;
    margin-bottom: 0.5rem;
}

#related-products {
    padding: 5rem 2rem;
    background-color: #f5f5f5;
}

#related-products h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-detail-container {
        flex-direction: column;
        gap: 2rem;
    }

    .product-image {
        max-width: 100%;
    }

    .main-image {
        height: 300px;
    }

    .thumbnail {
        width: 70px;
        height: 70px;
    }

    .product-info h2 {
        font-size: 2rem;
    }
}