/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    min-width: 320px;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    min-width: 320px;
    width: 100%;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    width: 100%;
    gap: 2rem;
}

.nav-logo h2 {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: -5px;
}

.nav-logo span {
    color: #e2e8f0;
    font-size: 0.8rem;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    justify-content: center;
    margin: 0;
    padding: 0;
    align-items: center;
    height: 100%;
    grid-column: 2;
}

.nav-menu li {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-link {
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    line-height: 1;
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-link:hover {
    color: #93c5fd;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

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


/* 语言选择器样式 */
.language-selector {
    position: relative;
    width: 120px;
    flex-shrink: 0;
}

.language-dropdown {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    padding: 8px 12px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
    padding-right: 32px;
}

.language-dropdown:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.language-dropdown:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.language-dropdown option {
    background: #1e293b;
    color: white;
    padding: 8px 12px;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #334155;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    min-height: 60vh;
    display: flex;
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

.hero-left {
    flex: 0 0 40%;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    position: relative;
}

.hero-left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(147, 197, 253, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-right {
    flex: 1;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    height: auto;
}

.hero-right::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    padding: 0 80px 0 40px;
    max-width: 600px;
    z-index: 2;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: #1e293b;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #374151;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: #6b7280;
    line-height: 1.6;
}

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

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

/* Hero轮播图 */
.hero-carousel {
    position: relative;
    width: 100%;
    max-height: 400px;
    height: auto;
    overflow: hidden;
}

.hero-carousel .carousel-track {
    display: flex;
    height: auto;
    transition: transform 0.5s ease;
}

.hero-carousel .carousel-slide {
    min-width: 100%;
    height: auto;
    position: relative;
    display: none;
}

.hero-carousel .carousel-slide.is-active {
    display: block;
}

.hero-carousel .carousel-slide img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.hero-carousel .carousel-slide.is-active img {
    transform: scale(1.02);
}



.hero-carousel .carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
}

.hero-carousel .carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.hero-carousel .carousel-arrow.prev {
    left: 20px;
}

.hero-carousel .carousel-arrow.next {
    right: 20px;
}

.hero-carousel .carousel-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-carousel .carousel-dots button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-carousel .carousel-dots button.active {
    background: white;
    transform: scale(1.2);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 通用区块样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    padding: 6rem 0;
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

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

.about-text p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

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

.stat-item h4 {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #64748b;
    font-size: 0.9rem;
}

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

.image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 3rem;
    transition: transform 0.3s ease;
}

.image-placeholder:hover {
    transform: translateY(-5px);
}

.image-placeholder p {
    margin-top: 1rem;
    font-size: 1rem;
}

/* 产品画廊样式 */
.product-gallery {
    width: 100%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

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

.gallery-item img {
    transition: transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.gallery-item img:hover {
    transform: scale(1.05);
}

.gallery-item p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
    font-weight: 500;
}

/* 产品服务 */
.services {
    padding: 6rem 0;
}

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

.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.service-card p {
    color: #64748b;
    line-height: 1.6;
}

/* 产品展示 */
.products {
    padding: 6rem 0;
    background: #f8fafc;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    cursor: pointer;
}

.product-image {
    height: 200px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 3rem;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.product-content p {
    color: #64748b;
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    padding: 6rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #64748b;
    line-height: 1.6;
}

.contact-form {
    background: #f8fafc;
    padding: 2.5rem;
    border-radius: 20px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1rem;
    text-align: center;
    color: #94a3b8;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #60a5fa;
}

.footer-links span {
    color: #64748b;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        padding: 0 60px 0 30px;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.2);
        padding: 2rem 0;
        z-index: 999;
    }
    
    
    .language-selector {
        display: none;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
        height: auto;
    }
    
    .nav-container {
        grid-template-columns: auto 1fr auto;
        gap: 1rem;
    }
    
    .hero {
        flex-direction: column;
    }
    
    .hero-left, .hero-right {
        clip-path: none;
        flex: none;
        min-height: 50vh;
    }
    
    .hero-content {
        padding: 30px 20px;
        text-align: center;
        max-width: 100%;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
        line-height: 1.5;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-carousel .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .hero-carousel .carousel-arrow.prev {
        left: 10px;
    }
    
    .hero-carousel .carousel-arrow.next {
        right: 10px;
    }
    
    .hero-carousel .carousel-dots {
        bottom: 15px;
    }
    
    .hero-carousel .carousel-dots button {
        width: 10px;
        height: 10px;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .hero-graphic {
        width: 200px;
        height: 200px;
    }
    
    .floating-element {
        transform: scale(0.8);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        min-height: 50vh;
    }
    
    .hero-left, .hero-right {
        min-height: 40vh;
    }
    
    .hero-content {
        padding: 25px 15px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 1.6rem;
        line-height: 1.2;
        margin-bottom: 0.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 0.6rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        line-height: 1.4;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
        width: 100%;
        text-align: center;
    }
    
    .service-card,
    .contact-form {
        padding: 1.5rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 1rem;
    }
}

/* 极小屏幕优化 */
@media (max-width: 360px) {
    .hero-content {
        padding: 20px 10px;
    }
    
    .hero-title {
        font-size: 1.4rem;
        line-height: 1.1;
        margin-bottom: 0.6rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }
    
    .hero-description {
        font-size: 0.8rem;
        margin-bottom: 1.2rem;
        line-height: 1.3;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.8rem;
    }
    
    .nav-logo h2 {
        font-size: 1.2rem;
    }
    
    .nav-logo span {
        font-size: 0.7rem;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Active nav link */
.nav-link.active {
    color: #93c5fd;
}

/* Carousel */
.carousel {
    padding: 4rem 0 2rem;
    background: #fff;
}

.carousel .container {
    position: relative;
}

.carousel-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 100%;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.carousel-slide {
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    position: relative;
}

.carousel-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top right, rgba(0,0,0,0.2), rgba(0,0,0,0.15));
}

.carousel-caption {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #0f172a;
    padding: 2rem;
}

.carousel-caption h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.carousel-caption p {
    color: #334155;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.carousel-arrow.prev { left: 12px; }
.carousel-arrow.next { right: 12px; }

.carousel-dots {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 12px;
}

.carousel-dots button {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: none;
    background: #cbd5e1;
    cursor: pointer;
    transition: all .2s ease;
}

.carousel-dots button.active {
    width: 22px;
    background: #2563eb;
}

/* Cellophane Categories Styles */
.cellophane-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

/* Single Row Cellophane Layout */
.cellophane-categories-single {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin: 40px 0;
}

.category-item-single {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.category-item-single::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #1e40af);
    border-radius: 20px 20px 0 0;
}

.category-item-single:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.category-image-single {
    flex: 0 0 300px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.category-item-single:hover .category-image-single {
    transform: scale(1.05);
}

.category-image-single img {
    transition: transform 0.3s ease;
}

.category-item-single:hover .category-image-single img {
    transform: scale(1.1);
}

.category-content-single {
    flex: 1;
    padding-left: 20px;
}

.category-content-single h3 {
    color: #1e40af;
    margin-bottom: 25px;
    font-size: 1.8rem;
    font-weight: 700;
    position: relative;
}

.category-content-single h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.product-specs-single {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.product-specs-single .spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.2s ease;
}

.product-specs-single .spec-row:hover {
    background: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    padding-left: 8px;
    padding-right: 8px;
}

.product-specs-single .spec-row:last-child {
    border-bottom: none;
}

.product-specs-single .spec-label {
    font-weight: 600;
    color: #475569;
    min-width: 140px;
    font-size: 0.95rem;
}

.product-specs-single .spec-value {
    color: #1e293b;
    text-align: right;
    flex: 1;
    font-weight: 500;
    font-size: 0.9rem;
}

.category-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #1e40af);
    border-radius: 20px 20px 0 0;
}

.category-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.category-image {
    margin-bottom: 25px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.category-item:hover .category-image {
    transform: scale(1.05);
}

.category-image img {
    transition: transform 0.3s ease;
}

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

.category-content h3 {
    color: #1e40af;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    position: relative;
}

.category-content h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: rgba(248, 250, 252, 0.8);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.2s ease;
}

.spec-row:hover {
    background: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    padding-left: 8px;
    padding-right: 8px;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 600;
    color: #475569;
    min-width: 140px;
    font-size: 0.95rem;
}

.spec-value {
    color: #1e293b;
    text-align: right;
    flex: 1;
    font-weight: 500;
    font-size: 0.9rem;
}

/* Nonwoven Categories Styles */
.nonwoven-overview {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.nonwoven-overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #10b981, #059669, #047857);
    border-radius: 20px 20px 0 0;
}

.overview-content h3 {
    color: #1e40af;
    margin-bottom: 20px;
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    position: relative;
}

.overview-content h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #10b981, #059669);
    border-radius: 2px;
}

.general-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.general-specs .spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(226, 232, 240, 0.5);
}

.general-specs .spec-row:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

.general-specs .spec-label {
    font-weight: 600;
    color: #374151;
    flex: 0 0 40%;
}

.general-specs .spec-value {
    color: #64748b;
    text-align: right;
    flex: 1;
    line-height: 1.5;
}

.nonwoven-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.nonwoven-categories .category-item {
    text-align: center;
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
    border: 1px solid rgba(16, 185, 129, 0.1);
    transition: all 0.4s ease;
}

.nonwoven-categories .category-item::before {
    background: linear-gradient(90deg, #10b981, #059669, #047857);
}

.nonwoven-categories .category-item:hover {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.15);
}

.nonwoven-categories .category-content h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
    color: #047857;
}

.nonwoven-categories .category-content h3::after {
    background: linear-gradient(90deg, #10b981, #059669);
}

.nonwoven-categories .category-content p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-top: 15px;
}

/* Back Button Styles */
.back-button {
    text-align: center;
    margin: 50px 0;
    position: relative;
}

.back-button .btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    border-radius: 12px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border: none;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.back-button .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.back-button .btn:hover::before {
    left: 100%;
}

.back-button .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(59, 130, 246, 0.4);
}

.back-button .btn:active {
    transform: translateY(0);
}

/* Product Page Header Enhancement */
.product-page-header {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.product-page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.product-page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.product-page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Section Header Enhancement */
.section-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .carousel-slide { min-height: 200px; }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .gallery-item img {
        height: 250px;
    }
    
    .cellophane-categories {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .nonwoven-categories {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }
    
    .general-specs {
        grid-template-columns: 1fr;
    }
    
    .general-specs .spec-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 15px;
    }
    
    .general-specs .spec-label {
        flex: none;
        margin-bottom: 5px;
    }
    
    .general-specs .spec-value {
        text-align: left;
        flex: none;
    }
    
    .spec-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .spec-value {
        text-align: left;
    }
    
    /* Single row layout responsive */
    .category-item-single {
        flex-direction: column;
        gap: 20px;
    }
    
    .category-image-single {
        flex: none;
        width: 100%;
    }
    
    .category-content-single {
        padding-left: 0;
    }
    
    .product-specs-single {
        grid-template-columns: 1fr;
    }
}

/* Dropdown Menu Styles */
.nav-item.dropdown {
    position: relative;
}

.dropdown-toggle {
    position: relative;
}

.dropdown-toggle::after {
    content: '';
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(30, 64, 175, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 8px 0;
    min-width: 250px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.dropdown-section {
    position: relative;
}

.dropdown-section:hover .dropdown-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.dropdown-submenu {
    position: absolute;
    left: 100%;
    top: 0;
    background: rgba(30, 64, 175, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 8px 0;
    min-width: 220px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    z-index: 1001;
    margin-left: 5px;
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-item.dropdown:hover .dropdown-toggle::after {
    transform: none;
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fbbf24;
    padding-left: 25px;
}

.dropdown-item:active {
    background: rgba(255, 255, 255, 0.2);
}

/* Contact Grid Layout */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.contact-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8, #1e40af);
    border-radius: 20px 20px 0 0;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.contact-card .contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

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

.contact-card .contact-content h3 {
    color: #1e40af;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
}

.contact-card .contact-content h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.contact-card .contact-content p {
    color: #64748b;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* Contact Page Layout */
.contact-page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 50px;
    align-items: stretch;
}

.contact-info-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.1);
    display: flex;
    flex-direction: column;
    min-height: 500px;
}

.contact-info-section h3 {
    color: #1e40af;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
}

.contact-info-section h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-info-item:hover {
    background: rgba(59, 130, 246, 0.05);
    transform: translateX(5px);
}

.contact-info-item .contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-info-item .contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-info-item .contact-details h4 {
    color: #1e40af;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-info-item .contact-details p {
    color: #64748b;
    font-size: 1rem;
    line-height: 1.5;
    margin: 0;
}

/* Feature Items */
.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
    padding: 20px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(16, 185, 129, 0.05);
    transform: translateX(5px);
}

.feature-item .feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.feature-item .feature-icon i {
    font-size: 1.2rem;
    color: white;
}

.feature-item .feature-content h4 {
    color: #1e40af;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-item .feature-content p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-page-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-card {
        padding: 30px 20px;
    }
    
    .contact-info-section {
        padding: 30px 20px;
    }
}

/* 产品详情页面样式 */
.product-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.product-category-header {
    text-align: center;
    margin-bottom: 25px;
    padding: 20px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.product-category-header h2 {
    font-size: 2.2rem;
    color: #1e40af;
    margin-bottom: 10px;
    font-weight: 700;
}

.product-category-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

.product-details {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.product-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.product-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1e40af 0%, #3b82f6 50%, #1e40af 100%);
}

.product-image {
    width: 100%;
    max-width: 800px;
    position: relative;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 280px;
    object-fit: contain;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    background: white;
}

.product-image:hover img {
    transform: scale(1.02);
}

.arrow-down {
    text-align: center;
    margin: 15px 0;
    animation: bounce 2s infinite;
}

.arrow-down i {
    font-size: 24px;
    color: #007bff;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

/* Right Arrow Styles */
.arrow-right {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 20px;
    animation: pulse 2s infinite;
}

.arrow-right i {
    font-size: 24px;
    color: #007bff;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.image-container {
    flex: 1;
    max-width: 45%;
}

/* Specific adjustment for Cellulose Film Roll for Silicone Hose page */
.product-cellophane-discs .product-image {
    margin-top: 30px;
}

/* Vertical image layout optimization */
.product-content.vertical-layout {
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.product-content.vertical-layout .product-image {
    width: 100%;
    max-width: 500px;
    margin-top: 20px;
}

.product-content.vertical-layout .product-specs {
    width: 100%;
    max-width: 800px;
}

.product-content.vertical-layout .product-image img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Applications Section Styles */
.applications-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.application-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.application-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.application-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.application-overlay {
    display: none;
}

.application-icon {
    display: none;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.application-content {
    padding: 30px;
}

.application-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
    text-align: center;
}

.application-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: center;
}

.application-features {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.feature-tag {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

/* Products Page Styles */
.products-page-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.products-page-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.product-page-card {
    background: white;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

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

.product-page-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.product-page-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-page-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.9), rgba(0, 86, 179, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.product-page-icon {
    background: white;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #007bff;
    animation: pulse 2s infinite;
}

.product-page-content {
    padding: 40px;
    text-align: center;
}

.product-page-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.product-page-content p {
    color: #64748b;
    line-height: 1.7;
    font-size: 16px;
    margin-bottom: 25px;
}

.product-page-features {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.product-feature-tag {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.product-specs {
    width: 100%;
    max-width: 800px;
}

.product-specs h3 {
    color: #1e40af;
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

/* Product page applications grid */
.product-specs .applications-grid {
    display: grid;
    gap: 15px;
    margin-top: 15px;
    margin-bottom: 0;
}

.product-specs .application-category {
    background: #f8fafc;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.product-specs .application-category h4 {
    color: #1e40af;
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.product-specs .application-category p {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.4;
    margin: 0;
}

.specs-grid {
    display: grid;
    gap: 15px;
    margin-bottom: 25px;
    background: #f8fafc;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.spec-row:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.spec-label {
    font-weight: 600;
    color: #374151;
}

.spec-value {
    color: #64748b;
    text-align: right;
}

.features-list, .applications-list {
    list-style: none;
    padding: 0;
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #e2e8f0;
}

.features-list li, .applications-list li {
    padding: 10px 0;
    color: #64748b;
    position: relative;
    padding-left: 35px;
    background: white;
    margin-bottom: 8px;
    border-radius: 8px;
    padding: 12px 16px 12px 35px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.features-list li:hover, .applications-list li:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.features-list li::before, .applications-list li::before {
    content: "✓";
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #10b981;
    font-weight: bold;
    font-size: 1.2rem;
}

.back-button-container {
    text-align: center;
    padding: 40px 0;
    background: #f8fafc;
}

.back-button {
    display: inline-block;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 15px 30px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 64, 175, 0.3);
    border: none;
    cursor: pointer;
}

.back-button:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-content {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }
    
    .product-image {
        flex: none;
    }
    
    .product-image img {
        height: 200px;
        background: white;
    }
    
    .product-image {
        flex-direction: column;
        max-width: 500px;
    }
    
    .arrow-right {
        margin: 15px 0;
        transform: rotate(90deg);
    }
    
    .image-container {
        max-width: 100%;
    }
    
    .product-cellophane-discs .product-image {
        margin-top: 20px;
    }
    
    .product-content.vertical-layout {
        gap: 15px;
    }
    
    .product-content.vertical-layout .product-image {
        max-width: 100%;
        margin-top: 15px;
    }
    
    .product-content.vertical-layout .product-image img {
        max-height: 300px;
    }
    
    .product-category-header h2 {
        font-size: 2rem;
    }
    
    .product-specs .applications-grid {
        gap: 12px;
        margin-top: 12px;
    }
    
    .product-specs .application-category {
        padding: 12px;
    }
    
    .product-specs .application-category h4 {
        font-size: 1rem;
        margin-bottom: 6px;
    }
    
    .product-specs .application-category p {
        font-size: 0.9rem;
    }
    
    .product-category-header p {
        font-size: 1rem;
    }
    
    .specs-grid {
        padding: 20px;
    }
    
    .spec-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .spec-value {
        text-align: left;
    }
    
    .features-list, .applications-list {
        padding: 20px;
    }
    
    .features-list li, .applications-list li {
        padding: 12px 15px 12px 30px;
    }
    
    .back-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
}