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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 700;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

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

.nav-link {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav-link:hover {
    color: #3498db;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.bar {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 汉堡菜单动画 */
.nav-toggle.active .bar:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 首页横幅 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.showcase-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.showcase-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.showcase-slide.active {
    opacity: 1;
}

.showcase-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4) blur(1px);
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.8) 0%, rgba(52, 73, 94, 0.6) 50%, rgba(44, 62, 80, 0.8) 100%);
}



.hero-container {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 1200px;
    padding: 0 2rem;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2rem;
    animation: pulse 2s infinite;
}

.badge-icon {
    font-size: 1.2rem;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(255, 255, 255, 0);
    }
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #e3f2fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    font-weight: 300;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #64b5f6;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(45deg, #2196f3, #21cbf3);
    color: white;
    padding: 16px 32px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(33, 150, 243, 0.4);
    background: linear-gradient(45deg, #1976d2, #2196f3);
}

.btn-secondary {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 16px 32px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
    opacity: 0.7;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.cta-button {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.cta-button:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

/* 产品概览 */
.products-overview {
    /* padding: 10px 0; */
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.products-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-preview-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    height: 300px;
}

.product-preview-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.product-preview-image {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.product-preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-preview-card:hover .product-preview-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(52, 152, 219, 0.9), rgba(155, 89, 182, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.4s ease;
}

.product-preview-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay-content {
    text-align: center;
    color: white;
    transform: translateY(20px);
    transition: transform 0.4s ease;
}

.product-preview-card:hover .product-overlay-content {
    transform: translateY(0);
}

.product-overlay-content h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.product-overlay-content p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.product-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.view-all-products {
    text-align: center;
    margin-top: 3rem;
}

.cta-button-secondary {
    display: inline-block;
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.cta-button-secondary:hover {
    background: linear-gradient(45deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

/* 企业优势 */
.advantages {
    padding: 100px 0;
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: white;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(45deg, #e74c3c, #c0392b);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.advantage-icon i {
    font-size: 2rem;
    color: white;
}

.advantage-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: white;
}

.about-content {
    text-align: center;
}

.about-text h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.feature i {
    font-size: 2.5rem;
    color: #e74c3c;
}

.feature span {
    font-weight: 600;
    color: #2c3e50;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: #2c3e50;
    color: white;
}

.contact .section-title {
    color: white;
}

.contact-content {
    text-align: center;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 2rem;
    color: #3498db;
}

.contact-item span {
    font-size: 1.1rem;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 1000px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #ecf0f1;
}

.gallery-container {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.gallery-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 20px 15px 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 图片查看器 */
.image-viewer {
    display: none;
    position: fixed;
    z-index: 3000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
}

.close-viewer {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 3001;
    transition: color 0.3s ease;
}

.close-viewer:hover {
    color: #3498db;
}

#viewer-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 24px;
    padding: 15px 20px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: all;
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #3498db 0%, #2c3e50 100%);
    color: white;
    text-align: center;
    padding: 120px 0 60px;
    margin-top: 70px;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.breadcrumb {
    font-size: 1rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.breadcrumb a:hover {
    opacity: 1;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: white;
    text-align: center;
    padding: 30px 0;
}

.footer p {
    margin-bottom: 10px;
}

.footer a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* 响应式设计 */
@media screen and (max-width: 1024px) {
    .product-intro {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 3rem;
        padding: 2rem 1rem;
        border-radius: 20px;
    }

    .product-intro-content {
        padding: 1rem;
        order: 2;
    }

    .product-intro-image {
        order: 1;
        margin: 1rem 0;
        transform: none;
    }

    .product-intro-image:hover {
        transform: scale(1.02);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 1.5rem 0;
        z-index: 1000;
    }

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

    .nav-toggle {
        display: flex;
    }

    /* 优化移动端导航栏高度 */
    nav {
        height: 60px;
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.3rem;
    }

    /* 重新设计移动端首页英雄区 */
    .hero {
        min-height: 100vh;
        height: auto;
        padding: 80px 0 40px;
        position: relative;
        overflow: hidden;
    }

    .hero-container {
        padding: 0 1rem;
        position: relative;
        z-index: 2;
    }

    .hero-content {
        text-align: center;
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-badge {
        padding: 8px 16px;
        font-size: 0.75rem;
        margin-bottom: 1.5rem;
        display: inline-block;
    }

    .hero-content h1 {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
        font-weight: 700;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
        opacity: 0.9;
        line-height: 1.4;
    }

    /* 重新布局统计数据 */
    .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
        margin-bottom: 2.5rem;
        padding: 0 1rem;
    }

    .stat-item {
        text-align: center;
        padding: 1rem;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 12px;
        backdrop-filter: blur(10px);
    }

    .stat-number {
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
        display: block;
    }

    .stat-label {
        font-size: 0.9rem;
        opacity: 0.8;
    }

    /* 优化按钮布局 */
    .hero-actions {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
        width: 180px;
        text-align: center;
        border-radius: 25px;
    }

    /* 隐藏或重新设计浮动元素 */
    .floating-screenshots {
        display: none;
    }

    /* 添加移动端专用的装饰元素 */
    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, 
            rgba(52, 152, 219, 0.1) 0%, 
            rgba(155, 89, 182, 0.1) 50%, 
            rgba(52, 73, 94, 0.1) 100%);
        z-index: 1;
    }

    /* 优化产品概览区域 */
    .product-overview {
        padding: 3rem 1rem;
    }

    .product-overview h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
        text-align: center;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 400px;
        margin: 0 auto;
    }

    .product-item {
        padding: 1.5rem;
        border-radius: 16px;
        text-align: center;
    }

    .product-item img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 12px;
        margin-bottom: 1rem;
    }

    .product-item h3 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }

    .product-item p {
        font-size: 0.9rem;
        line-height: 1.4;
        margin-bottom: 1rem;
        opacity: 0.8;
    }

    .product-item a {
        display: inline-block;
        padding: 10px 20px;
        background: #3498db;
        color: white;
        text-decoration: none;
        border-radius: 20px;
        font-size: 0.9rem;
        transition: all 0.3s ease;
    }

    /* 优化关于我们和联系我们区域 */
    .about, .contact {
        padding: 2.5rem 1rem;
        text-align: center;
    }

    .about h2, .contact h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }

    .about p, .contact p {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 1rem;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    /* 优化页面头部 */
    .page-header {
        padding: 80px 1rem 50px;
        margin-top: 60px;
    }

    .page-header h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .page-header p {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .breadcrumb {
        font-size: 0.9rem;
    }

    /* 优化产品导航 */
    .product-nav {
        padding: 1rem 0;
        top: 60px;
    }

    .product-nav-tabs {
        padding: 0 1rem;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .product-nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tab {
        padding: 10px 16px;
        font-size: 0.85rem;
        white-space: nowrap;
        min-width: auto;
    }

    /* 优化产品详情 */
    .product-detail {
        padding: 2rem 1rem;
    }

    .product-intro h2 {
        font-size: 1.6rem;
        line-height: 1.3;
        margin-bottom: 1.5rem;
    }

    .product-description {
        font-size: 1rem;
    }

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

    .features {
        flex-direction: column;
        gap: 2rem;
    }

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

    .gallery-container {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    /* 优化画廊分类标题 */
    .gallery-section {
        margin-bottom: 3rem;
    }
    
    .gallery-section-title {
        font-size: 1.5rem;
        padding: 0.8rem 1rem;
        margin-bottom: 1.5rem;
    }
    
    .gallery-section-title i {
        font-size: 1.3rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
        padding: 0.5rem 0;
    }

    .gallery-item {
        border-radius: 16px;
        aspect-ratio: 4/3;
    }

    .gallery-item img {
        border-radius: 16px 16px 0 0;
    }

    .gallery-overlay {
        padding: 1rem;
        border-radius: 0 0 16px 16px;
    }

    .gallery-overlay h4 {
        font-size: 1rem;
    }

    .gallery-overlay p {
        font-size: 0.8rem;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
    }

    .image-nav {
        padding: 0 10px;
    }

    .nav-btn {
        padding: 10px 15px;
        font-size: 20px;
    }

    .image-info {
        bottom: 10px;
        left: 10px;
        right: 10px;
        padding: 10px;
    }

    .image-info h3 {
        font-size: 1rem;
    }
}

@media screen and (max-width: 480px) {
    /* 超小屏幕优化 */
    nav {
        height: 55px;
        padding: 0 0.8rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    /* 英雄区域进一步优化 */
    .hero {
        padding: 70px 0 30px;
    }

    .hero-container {
        padding: 0 0.8rem;
    }

    .hero-badge {
        padding: 6px 12px;
        font-size: 0.7rem;
        margin-bottom: 1rem;
    }

    .hero-content h1 {
        font-size: 1.6rem;
        line-height: 1.2;
        margin-bottom: 0.8rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        line-height: 1.4;
    }

    /* 统计数据单列布局 */
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 2rem;
        padding: 0 0.5rem;
    }

    .stat-item {
        padding: 0.8rem;
    }

    .stat-number {
        font-size: 1.5rem;
        margin-bottom: 0.3rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    /* 按钮优化 */
    .hero-actions {
        gap: 0.8rem;
        margin-bottom: 1.5rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 10px 20px;
        font-size: 0.85rem;
        width: 160px;
        border-radius: 20px;
    }

    /* 产品概览优化 */
    .product-overview {
        padding: 2rem 0.8rem;
    }

    .product-overview h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .product-grid {
        max-width: 320px;
        gap: 1.2rem;
    }

    .product-item {
        padding: 1.2rem;
        border-radius: 12px;
    }

    .product-item img {
        height: 160px;
        border-radius: 8px;
    }

    .product-item h3 {
        font-size: 1.1rem;
        margin-bottom: 0.6rem;
    }

    .product-item p {
        font-size: 0.85rem;
        margin-bottom: 0.8rem;
    }

    .product-item a {
        padding: 8px 16px;
        font-size: 0.85rem;
        border-radius: 16px;
    }

    /* 关于我们和联系我们 */
    .about, .contact {
        padding: 2rem 0.8rem;
    }

    .about h2, .contact h2 {
        font-size: 1.4rem;
        margin-bottom: 1.2rem;
    }

    .about p, .contact p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* 页面头部 */
    .page-header {
        padding: 70px 0.8rem 40px;
        margin-top: 55px;
    }

    .page-header h1 {
        font-size: 1.4rem;
        line-height: 1.2;
    }

    .page-header p {
        font-size: 0.9rem;
    }

    .breadcrumb {
        font-size: 0.8rem;
    }

    /* 产品导航 */
    .product-nav {
        top: 55px;
        padding: 0.8rem 0;
    }

    .product-nav-tabs {
        padding: 0 0.8rem;
    }

    .nav-tab {
        padding: 8px 12px;
        font-size: 0.8rem;
        border-radius: 16px;
    }

    /* 产品详情 */
    .product-detail {
        padding: 1.5rem 0.8rem;
    }

    .product-intro {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 2.5rem;
        padding: 1.5rem 0.8rem;
        border-radius: 16px;
    }

    .product-intro-content {
        padding: 0.8rem;
        order: 2;
    }

    .product-intro-image {
        order: 1;
        margin: 0.5rem 0;
        transform: none;
    }

    .product-intro h2 {
        font-size: 1.4rem;
        line-height: 1.3;
        margin-bottom: 1.2rem;
    }

    .product-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* 图片画廊 */
    .gallery-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0.5rem 0;
    }

    .gallery-item {
        border-radius: 12px;
        aspect-ratio: 4/3;
    }

    .gallery-item img {
        border-radius: 12px 12px 0 0;
    }

    .gallery-overlay {
        padding: 0.8rem;
        border-radius: 0 0 12px 12px;
    }

    .gallery-overlay h4 {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    .gallery-overlay p {
        font-size: 0.75rem;
    }

    /* 产品卡片 */
    .product-card {
        padding: 1.2rem;
        border-radius: 12px;
    }

    /* 特性项目 */
    .feature-item {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }

    .feature-item i {
        margin-bottom: 0.5rem;
        font-size: 1.5rem;
    }

    /* 模态框优化 */
    .modal-content {
        width: 98%;
        margin: 5% auto;
        border-radius: 12px;
    }

    .image-nav {
        padding: 0 5px;
    }

    .nav-btn {
        padding: 8px 12px;
        font-size: 18px;
    }

    .image-info {
        bottom: 5px;
        left: 5px;
        right: 5px;
        padding: 8px;
        border-radius: 8px;
    }

    .image-info h3 {
        font-size: 0.9rem;
    }

    .image-info p {
        font-size: 0.8rem;
    }
}

/* 移动端专用样式优化 */
@media screen and (max-width: 768px) {
    /* 触摸友好的按钮 */
    button, .btn, a {
        min-height: 44px;
        min-width: 44px;
    }

    /* 改善触摸体验 */
    .nav-tab, .product-item a, .btn-primary, .btn-secondary {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    /* 优化滚动性能 */
    .hero, .product-overview, .about, .contact {
        -webkit-overflow-scrolling: touch;
    }

    /* 移动端专用动画 */
    .product-item {
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .product-item:active {
        transform: scale(0.98);
    }

    /* 优化文本选择 */
    .hero-content, .product-overview {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }

    .about p, .contact p, .product-description {
        -webkit-user-select: text;
        -moz-user-select: text;
        -ms-user-select: text;
        user-select: text;
    }
}

/* 滚动条样式 */
.gallery-container::-webkit-scrollbar {
    width: 8px;
}

.gallery-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.gallery-container::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 4px;
}

.gallery-container::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* 移动端滚动条隐藏 */
@media screen and (max-width: 768px) {
    .product-nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .gallery-container::-webkit-scrollbar {
        width: 4px;
    }
}

/* 产品页面样式 */
.page-header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    margin-top: 70px;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.breadcrumb {
    font-size: 1rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.breadcrumb a:hover {
    opacity: 1;
}

.product-nav {
    background: white;
    padding: 2rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 70px;
    z-index: 100;
}

.product-nav-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-tab {
    background: #f8f9fa;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-tab:hover {
    background: #e9ecef;
    color: #333;
}

.nav-tab.active {
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.product-detail {
    display: none;
    padding: 110px 0;
}

.product-detail.active {
    display: block;
}

.product-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    margin-bottom: 6rem;
    padding: 3rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 25px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.product-intro-content {
    padding: 2rem;
}

.product-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
}

.product-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.product-intro h2 {
    font-size: 2.8rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    font-size: 1.5rem;
    color: #3498db;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.product-intro-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.12);
    transform: translateZ(0) rotateY(-2deg);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.3s ease;
    margin: 2rem;
    will-change: transform;
    backface-visibility: hidden;
}

.product-intro-image:hover {
    transform: translateZ(0) rotateY(0deg) scale(1.01);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.product-intro-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-gallery {
    margin-top: 4rem;
}

.product-gallery h3 {
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 700;
    text-align: center;
    position: relative;
}

.product-gallery h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, #3498db, #2980b9);
    border-radius: 2px;
}

/* 画廊分类区域 */
.gallery-section {
    margin-bottom: 4rem;
}

.gallery-section:last-child {
    margin-bottom: 0;
}

.gallery-section-title {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid #667eea;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.gallery-section-title:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.gallery-section-title i {
    font-size: 1.5rem;
    color: #667eea;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    padding: 1rem 0;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.05);
    aspect-ratio: 4/3;
    will-change: transform;
    backface-visibility: hidden;
}

.gallery-item:hover {
    transform: translateZ(0) translateY(-6px) scale(1.01);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.12);
    border-color: rgba(52, 152, 219, 0.2);
}

.gallery-item img {
    width: 100%;
    height: 70%;
    object-fit: cover;
    transition: transform 0.3s ease, filter 0.3s ease;
    border-radius: 20px 20px 0 0;
    will-change: transform;
    backface-visibility: hidden;
}

.gallery-item:hover img {
    transform: translateZ(0) scale(1.02);
    filter: brightness(1.03);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    color: #333;
    padding: 1.5rem;
    height: 30%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-radius: 0 0 20px 20px;
    transition: all 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
}

.gallery-overlay h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: inherit;
    transition: color 0.3s ease;
}

.gallery-overlay p {
    font-size: 0.85rem;
    opacity: 0.8;
    line-height: 1.4;
    margin: 0;
    color: inherit;
    transition: all 0.3s ease;
}

.gallery-item:hover .gallery-overlay p {
    opacity: 0.95;
}

.nav-link.active {
    color: #3498db;
}

.nav-link.active::after {
    width: 100%;
}

.image-info {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 15px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.image-info h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-preview-card {
    animation: fadeInUp 0.6s ease forwards;
}

.product-preview-card:nth-child(1) { animation-delay: 0.1s; }
.product-preview-card:nth-child(2) { animation-delay: 0.2s; }
.product-preview-card:nth-child(3) { animation-delay: 0.3s; }
.product-preview-card:nth-child(4) { animation-delay: 0.4s; }

.advantage-item {
    animation: fadeInUp 0.6s ease forwards;
}

.advantage-item:nth-child(1) { animation-delay: 0.1s; }
.advantage-item:nth-child(2) { animation-delay: 0.2s; }
.advantage-item:nth-child(3) { animation-delay: 0.3s; }
.advantage-item:nth-child(4) { animation-delay: 0.4s; }