/* GSD Medical - 308nm Excimer Phototherapy System Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
html, body {
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fa;
    overflow-x: hidden;
    max-width: 100%;
}
header {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.top-bar {
    background-color: #0056a6;
    color: white;
    padding: 8px 0;
    font-size: 0.9rem;
}
.top-bar-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
}
.top-bar-contact {
    display: flex;
    gap: 20px;
}
.top-bar-contact span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-main {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: #0056a6;
}
.logo-text span {
    color: #00a3d8;
}
nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}
nav a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    font-size: 1.05rem;
    transition: color 0.3s;
    position: relative;
}
nav a:hover, nav a.active {
    color: #0056a6;
}
nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #00a3d8;
}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #0056a6;
    cursor: pointer;
}
.hero {
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 20px;
    text-align: center;
}
.hero-content {
    max-width: 1200px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}
.hero p {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 30px;
}

.cta-button {
    display: inline-block;
    background-color: #ff6b35;
    color: white;
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}
.cta-button:hover {
    background-color: #ff5722;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}
section {
    padding: 15px 0px;
}
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 2.5rem;
    color: #0056a6;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}
.section-title h2::after {
    content: '';
    position: absolute;
    width: 70px;
    height: 4px;
    background-color: #00a3d8;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}
.section-title p {
    color: #666;
    max-width: 700px;
    margin: 20px auto 0;
}
.product-intro {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: 50px;
}
.product-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.product-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}
.product-image:hover img {
    transform: scale(1.03);
}
.product-desc {
    flex: 1;
}
.product-desc h3 {
    font-size: 1.8rem;
    color: #0056a6;
    margin-bottom: 20px;
}
.product-desc p {
    margin-bottom: 20px;
    color: #555;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}
.feature-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}
.feature-icon {
    background-color: #e6f4ff;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #0056a6;
    font-size: 2rem;
}
.feature-card h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #0056a6;
}
.specs-table {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}
.spec-row {
    display: flex;
    border-bottom: 1px solid #eee;
}
.spec-row:last-child {
    border-bottom: none;
}
.spec-name {
    flex: 1;
    padding: 20px;
    background-color: #f8f9fa;
    font-weight: 600;
    color: #0056a6;
}
.spec-value {
    flex: 2;
    padding: 20px;
}

.articles-section {
    background-color: #f0f8ff;
    padding: 80px 20px;
}
.articles-container {
    max-width: 1200px;
    margin: 0 auto;
}
.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.articles-column h3 {
    font-size: 1.5rem;
    color: #0056a6;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px solid #00a3d8;
    display: flex;
    align-items: center;
    gap: 10px;
}
.articles-column h3 i {
    color: #00a3d8;
}
.article-card {
    background-color: white;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}
.article-card a {
    display: block;
    padding: 25px;
    text-decoration: none;
    color: inherit;
}
.article-card .article-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0056a6;
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card .article-summary {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 15px;
}
.article-card .article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: #999;
}
.article-card .article-meta .date {
    display: flex;
    align-items: center;
    gap: 5px;
}
.article-card .read-more {
    color: #00a3d8;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}
.article-card:hover .read-more {
    color: #0056a6;
}

.more-link {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px dashed #d0e8ff;
}
.more-link a {
    display: inline-block;
    padding: 12px 30px;
    background-color: #0056a6;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s;
}
.more-link a:hover {
    background-color: #00a3d8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 86, 166, 0.3);
}
.more-link a i {
    margin-left: 8px;
}
footer {
    background-color: #002b5c;
    color: white;
    padding: 60px 20px 30px;
}
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}
.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: #00a3d8;
}
.footer-section p {
    margin-bottom: 15px;
    color: #ccc;
}
.footer-section ul {
    list-style: none;
}
.footer-section ul li {
    margin-bottom: 12px;
}
.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}
.footer-section a:hover {
    color: #00a3d8;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* Contact Form Styles */
.contact-form .form-group {
    margin-bottom: 20px;
}
.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #0056a6;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #00a3d8;
    box-shadow: 0 0 0 3px rgba(0, 163, 216, 0.1);
}
.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* Product Center Styles */
.product {
    background-color: #fff;
    padding: 80px 20px;
}

.home-tit {
    font-size: 2.5rem;
    color: #0056a6;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
    width: 100%;
}

.home-tit::after {
    content: '';
    position: absolute;
    width: 70px;
    height: 4px;
    background-color: #00a3d8;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
}

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

.product-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    list-style: none;
    margin-bottom: 50px;
}

.flex-jc-sb {
    justify-content: space-between;
}

.product-list li {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.product-list li:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.product-list li a {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.product-img {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: #f5f5f5;
    position: relative;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-list li:hover .product-img img {
    transform: scale(1.1);
}

.product-tit {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0056a6;
    padding: 20px 20px 10px;
    line-height: 1.4;
    min-height: 65px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-text {
    font-size: 0.9rem;
    color: #666;
    padding: 0 20px;
    line-height: 1.6;
    min-height: 75px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-more {
    font-size: 0.9rem;
    color: #00a3d8;
    padding: 15px 20px 20px;
    font-weight: 500;
    transition: color 0.3s;
}

.product-list li:hover .product-more {
    color: #0056a6;
}

.home-more {
    display: inline-block;
    padding: 15px 40px;
    background-color: #0056a6;
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 86, 166, 0.3);
    margin: 0 auto;
    display: block;
    width: fit-content;
}

.home-more:hover {
    background-color: #00a3d8;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 86, 166, 0.4);
}

/* Animation classes for wow.js */
.wow {
    visibility: hidden;
}

.fadeInDown {
    animation-name: fadeInDown;
}

.bounceInUp {
    animation-name: bounceInUp;
}

.fadeInUp {
    animation-name: fadeInUp;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translate3d(0, -30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes bounceInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 20px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

/* Lazy load image placeholder */
.lazyload {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazyloaded {
    opacity: 1;
}

/* 产品中心专用样式 */
.product-center-section {
    padding: 80px 20px;
    background-color: #fff;
}

.product-center-container {
    max-width: 1200px;
    margin: 0 auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #eee;
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-content {
    padding: 20px;
}

.product-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.product-description {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.product-price {
    font-size: 16px;
    font-weight: 600;
    color: #ff6b35;
}

.product-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.product-link:hover {
    color: #ff6b35;
}

.product-link i {
    font-size: 12px;
}

.product-categories {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.category-btn {
    padding: 10px 25px;
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.category-btn.active,
.category-btn:hover {
    background: #0066cc;
    color: white;
    border-color: #0066cc;
}

.view-all-btn {
    display: block;
    width: 200px;
    margin: 50px auto 0;
    padding: 12px 30px;
    background: #0066cc;
    color: white;
    text-align: center;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.view-all-btn:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.2);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .product-intro { flex-direction: column; }
    .features { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 2.5rem; }
    .articles-grid { grid-template-columns: 1fr; }
    .product-list { grid-template-columns: repeat(3, 1fr); gap: 25px; }
}
@media (max-width: 768px) {
    .top-bar-contact { flex-direction: column; gap: 5px; }
    .top-bar-content { text-align: center; }
    nav { display: none; position: absolute; top: 100%; left: 0; width: 100%; background-color: white; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); padding: 20px; }
    nav.active { display: block; }
    nav ul { flex-direction: column; gap: 15px; }
    .mobile-menu-btn { display: { block; }
    .features { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1.1rem; }
    .section-title h2 { font-size: 2rem; }
    .product-list { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .home-tit { font-size: 2rem; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
    .product-categories { gap: 10px; }
    .category-btn { padding: 8px 20px; font-size: 14px; }
    .product-intro { padding-left: 20px; padding-right: 20px; }
    .product-desc { padding-left: 15px !important; }
    .product-desc h3 { padding-left: 10px; }
    .product-desc p { padding-left: 10px; }
}
@media (max-width: 576px) {
    .spec-row { flex-direction: column; }
    .spec-name, .spec-value { width: 100%; }
    .hero { padding: 70px 20px; }
    section { padding: 60px 20px; }
    .article-card a { padding: 20px; }
    .article-card .article-title { font-size: 1rem; }
    .contact-form > div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
    .product-list { grid-template-columns: 1fr; gap: 20px; }
    .product { padding: 60px 20px; }
    .home-tit { font-size: 1.8rem; margin-bottom: 40px; }
    .product-img { height: 200px; }
}