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

:root {
    --primary-color: #0166B8;
    --secondary-color: #f9b000;
    --title-color: #222;
    --text-color: #666;
    --light-text: #fff;
    --dark-bg: #161921;
    --light-bg: #f5f5f5;
    --border-color: #ddd;
    --transition: all 0.3s ease;

    /* 基础字体大小，方便计算rem */
    font-size: 62.5%;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: '微软雅黑', 'Arial', sans-serif;
    line-height: 1.6;
    font-size: 1.6rem;
    color: var(--text-color);
    background-color: #fff;
    overflow-x: hidden;
    max-width: 1920px;
    margin: 0 auto;
    box-shadow: 0 0 25px 0 rgba(0, 0, 0, .15);
}

.pr {
    position: relative;
}

.flex {
    display: flex;
}

.w {
    max-width: 1440px;
    margin: 0 auto;
}


h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    position: relative;
    margin-bottom: 30px;
}

h2:after {
    content: '';
    display: block;
    width: 6rem;
    height: 0.3rem;
    background-color: var(--secondary-color);
    position: absolute;
    bottom: -1rem;
    left: 0;
}

.text-center h2:after {
    left: 50%;
    transform: translateX(-50%);
}

p {
    margin-bottom: 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

img {
    max-width: 100%;
    height: auto;
}


.btn-primary, .btn-inquiry {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    text-align: center;

}

.btn-primary:hover, .btn-inquiry:hover {
    background-color: var(--secondary-color);
    color: var(--light-bg);
}

.btn-container {
    margin-top: 30px;
}


.fab, .far {
    font-size: 2rem;
    color: #fff
}

.top-info-bar {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 1rem 0;

    height: 4.2rem;
    display: flex;
    align-items: center;
}

.top-info-bar .w {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    height: 100%;
    width: 100%;
}

.top-info-left {
    display: flex;
    position: absolute;
    right: 26rem;

    gap: 10rem
}

.top-info-right {
    position: absolute;
    right: 1.5rem;
}

.contact-item {
    margin-right: 2rem;
}

.contact-item a {
    color: var(--light-text);
}

.contact-item a:hover i {
    color: var(--secondary-color);
}

.contact-item i {
    margin-right: 0.5rem;
    vertical-align: middle;
    transition: all .3s;
    color: var(--light-bg);
    margin-top: -0.2rem;
}

.top-info-right .social-links a {
    width: 3rem;
    height: 3rem;
    line-height: 3rem;
    margin-left: 0.5rem;
    margin-right: 0;
}



.social-links a i {
    vertical-align: middle;
    display: inline-block;
    width: 3rem;
    height: 3rem;
    background-color: #393B42;
    color: white;
    font-size: 1.6rem;
    text-align: center;
    line-height: 3rem;
    border-radius: 50%;
    transition: all .3s
}

.social-links a:hover i {
    background-color: var(--secondary-color);
}

.footer-bottom .social-links a, .footer-bottom .social-links a i {
    width: 4rem;
    height: 4rem;
    line-height: 4rem;
    font-size: 1.8rem;
}

.header {
    background-color: transparent;
    box-shadow: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid #28699F;
    max-width: 1920px;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.header.sticky {
    position: fixed;
    top: 0;
    border: none
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }

    to {
        transform: translateY(0);
    }
}

.header .w {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 8rem;
}

.logo img {
    max-height: 6rem;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 1.2rem;
}

.main-nav ul li {
    margin: 0 1.5rem;
}

.main-nav ul li a {
    color: var(--light-text);
    font-weight: 600;
    padding: 0.5rem 0 3.2rem 0;
    position: relative;
    transition: var(--transition);
}

.header.scrolled .main-nav ul li a {
    color: var(--title-color);
}

.header.scrolled .selected-language {
    background: url(../images/global-b.png) no-repeat left center;
}

.main-nav ul li a:before {
    content: '';
    position: absolute;
    width: 0;
    height: 0.3rem;
    background-color: var(--secondary-color);
    bottom: 0;
    left: 0;
    transition: var(--transition);
}
.header.scrolled .main-nav ul li a:before{
    bottom: 2px;
}
.main-nav ul li a:hover:before,
.main-nav ul li a.active:before {
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
}


.language-selector {
    position: relative;
    margin-right: 2rem;
    z-index: 100;
}

.selected-language {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem 1rem 0.5rem 2rem;
    border-radius: 0.4rem;
    color: var(--light-text);
    background: url(../images/global.png) no-repeat left center;
}

.header.scrolled .selected-language {
    color: var(--text-color);
}

.selected-language i {
    margin-right: 0.5rem;
    color: var(--light-text);
}

.header.scrolled .selected-language i {
    color: var(--primary-color);
}

.selected-language i.fa-chevron-down {
    margin-left: 0.5rem;
    margin-right: 0;
    font-size: 0.8rem;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
    display: none;
    list-style: none;
    min-width: 15rem;
}

.language-dropdown li {
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.language-dropdown li:hover {
    background-color: var(--light-bg);
}

.language-dropdown li.selected {
    background-color: var(--light-bg);
    font-weight: bold;
}

.language-dropdown li a {
    color: var(--text-color);
    display: block;
    width: 100%;
}


.search-icon {
    font-size: 1.8rem;
    margin-right: 2rem;
    cursor: pointer;
    color: var(--light-text);
    transition: var(--transition);
}

.header.scrolled .search-icon {
    color: var(--primary-color);
}

.search-icon:hover {
    color: var(--secondary-color);
}


.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 3rem;
    height: 2rem;
    cursor: pointer;
}

.mobile-menu-btn span {
    height: 0.3rem;
    width: 100%;
    background-color: var(--light-text);
    transition: var(--transition);
}

.header.scrolled .mobile-menu-btn span {
    background-color: var(--text-color);
}


.hero-section {
    position: relative;
    margin-top: 0;
    background-color: transparent;
    z-index: 1;
    overflow: hidden;
}

.hero-swiper {
    width: 100%;
}

.hero-swiper .swiper-slide {
    position: relative;
    width: 100%;
    text-align: center;
}

.hero-swiper .swiper-slide img {
    width: auto;
    max-width: 100%;
    height: auto;
    display: inline-block;
}

.hero-swiper .swiper-pagination {
    text-align: right;
    bottom: 8.2rem
}

.hero-swiper .swiper-pagination-bullet {
    width: 1.2rem;
    height: 1.2rem;
    background-color: #fff;
    opacity: 1;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
}

.hero-swiper .swiper-pagination-bullet-active {
    width: 3.4rem;
    border-radius: 0.6rem;
    background-color: var(--secondary-color);
    opacity: 1;
}

.hero-content {
    color: var(--light-text);
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

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

.hero-content p span {
    color: var(--secondary-color);
    font-weight: bold;
}


.about-section {
    padding: 8rem 0;
    position: relative;
    background: url('../images/inaboutbg.jpg') no-repeat center center;
    background-size: cover;
    color: #333;
}


.quote-mark {
    width: 5rem;
    height: 5rem;
    background: url(../images/yh.png) no-repeat left top;

    color: rgba(0, 86, 179, 0.1);
    z-index: 1;
}

.about-section h2 {
    position: relative;
    z-index: 2;
    font-size: 6rem;
    margin: 2.4rem 0 4rem;
}

.about-head {
    justify-content: space-between;
}

.about-content {
    max-width: 860px;
}

.about-quote {
    margin: 3rem 0;
    font-weight: 500;
    color: #222;
    width: 80%;
    font-weight: bold;
}

.about-quote p {
    line-height: 1.6;
}

.stats-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin: 5rem 0;
}

.stat-box {
    flex-basis: calc(33.333% - 3rem);
    height: 20rem;
    padding: 4rem 0;
    background-color: #fff;
    border-radius: 1rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.stat-box:hover {
    transform: translateY(-1rem);
    box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.1);
}

.stat-icon-container {
    width: 20rem;
    height: 20rem;
    margin: 0 auto 2rem;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    transform: translateX(-40%);
    background-color: #F0F6FB;
    border-radius: 12rem;
    overflow: hidden;
}

.semicircle-bg {
    width: 18.2rem;
    height: 17.2rem;
    margin: 0 auto 2rem;
    position: absolute;
    top: 1.5rem;
    left: 0;
    z-index: 1;
    background-color: #D8E7F4;
    border-radius: 12rem;
}

.stat-icon-img {
    position: absolute;
    max-width: 5rem;
    max-height: 5rem;
    left: 50%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
}

.stat-number {
    margin-bottom: 1rem;
    margin-left: 14rem;
}

.stat-number dl dt {
    font-size: 6rem;
    font-weight: bold;
    color: var(--title-color);
    line-height: 1;
    margin-bottom: 1rem;
}

.stat-number dl dd {
    font-weight: 500;
}

.btn-container {
    text-align: right;
    margin-top: 4rem;
}


.products-section {
    padding: 8rem 0;
    background: url('../images/inprobg.jpg') no-repeat center center;
    background-size: cover;
    color: var(--light-text);
    position: relative;
}

.products-section h2 {
    font-size: 6rem;
    color: #fff;
    text-align: center;
    margin-bottom: 2rem;
}

.products-section h2:after {
    background-color: var(--light-text);
    left: 50%;
    transform: translateX(-50%);
}

.products-section p {
    text-align: center;
    max-width: 85%;
    margin: 0 auto 4rem;
    color: #fff;
}

.product-tabs {
    display: flex;
    justify-content: center;
    margin: 3rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.product-tab {
    padding: 1.5rem 3rem;
    background: #F7F7F7;
    font-size: 1.8rem;
    border: none;
    color: #333;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    border-radius: 0;
    min-width: 18rem;
}

.product-tab.active,
.product-tab:hover {
    background-color: #0166B8;
    color: var(--light-text);
}

.product-grid {
    margin-top: 4rem;
    overflow: hidden;
    position: relative;
    transition: opacity 0.3s ease;
}

.product-grid.loading {
    opacity: 0.5;
}

.product-swiper {
    padding-bottom: 6rem;
    width: 100%;
}

.product-swiper .swiper-wrapper {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    grid-template-rows: repeat(2, 1fr) !important;
    grid-row-gap: 2rem !important;
    grid-column-gap: 2rem !important;
    height: auto !important;
    max-height: 55rem;
    min-height: 55rem;
    transform: none !important;
    pointer-events: auto !important;
}

.product-swiper .swiper-slide {
    height: auto !important;
    margin: 0 !important;
    width: 100% !important;
    opacity: 0;
    animation: fadeIn 0.5s forwards;
    z-index: auto !important;
    position: relative !important;
    pointer-events: auto !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.swiper-slide-active, .swiper-slide-duplicate-active {
    z-index: auto !important;
    pointer-events: auto !important;
}

.product-swiper .swiper-pagination {
    bottom: 0;
}

.product-swiper .swiper-button-next,
.product-swiper .swiper-button-prev {
    color: #fff;
}

@media (max-width: 1200px) {
    .product-swiper .swiper-wrapper {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .product-swiper .swiper-wrapper {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .product-swiper .swiper-wrapper {
        grid-template-columns: repeat(2, 1fr) !important;
        grid-template-rows: repeat(4, 1fr) !important;
        min-height: 95rem !important;
    }

    .product-card {
        height: 22rem;
    }

    .product-img {
        padding: 1rem;
    }

    .product-overlay h3 {
        font-size: 1.8rem;
        margin-bottom: 0.5rem;
    }

    .product-overlay p {
        font-size: 0.8rem;
        margin-bottom: 1rem;
    }

    .product-tabs {
        flex-wrap: wrap;
        width: 100%;
    }

    .product-tab {
        flex: 1 0 calc(50% - 1rem);
        min-width: auto;
        margin-bottom: 1rem;
    }
}

@media (max-width: 640px) {
    .product-swiper .swiper-wrapper {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (max-width: 480px) {
    .product-swiper .swiper-wrapper {
        grid-template-columns: repeat(1, 1fr) !important;
        grid-template-rows: repeat(8, 1fr) !important;
        min-height: 170rem !important;
    }

    .product-card {
        height: 20rem;
    }

    .product-tab {
        flex: 1 0 100%;
    }
}

.product-card {
    background-color: #fff;
    overflow: hidden;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    height: 25rem;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
    pointer-events: auto;
}

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

.product-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.2);
}

.product-img {
    height: 100%;
    overflow: hidden;
    position: relative;
    background-color: #fff;
    flex: 1;
    z-index: 1;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 2rem;
    transition: transform 0.5s ease;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(1, 102, 184, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: #fff;
    text-align: center;
    z-index: 5;
    pointer-events: none;
}

.product-card:hover .product-overlay {
    opacity: 1;
    pointer-events: auto;
}

.product-overlay h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #fff;
}

.product-overlay p {

    margin-bottom: 1.5rem;
    color: #fff;
}

.btn-more {
    display: inline-block;
    color: #fff;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    z-index: 3;

}

.btn-more:hover {
    color: var(--secondary-color);
}


.brand-section {
    padding: 8rem 0;
    background-color: #fff;
}

.brand-section h2 {
    font-size: 6rem;
    text-align: center;
    color: var(--title-color)
}

.brand-section h2:after {
    left: 50%;
    transform: translateX(-50%);
}

.brand-section p {
    text-align: center;
    max-width: 85%;
    margin: 0 auto 4rem;
}

.brand-swiper {
    padding: 3rem 0;
    position: relative;
}

.brand-swiper .swiper-wrapper {
    min-height: 24rem;
    transition: all 0.3s ease;
}

.brand-swiper .swiper-slide {
    height: 10rem;
    display: flex;
    align-items: center;
    justify-content: center;
/*    filter: grayscale(100%);
    opacity: 0.7;*/
    transition: var(--transition);
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 0.5rem;
    padding: 1.5rem;
}

.brand-swiper .swiper-slide:hover {
    filter: grayscale(0);
    opacity: 1;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
}

.brand-swiper .swiper-slide img {
    max-height: 8rem;
    max-width: 80%;
    object-fit: contain;
}

.brand-swiper .swiper-pagination {
    position: relative;
    margin-top: 2rem;
}

.brand-swiper .swiper-pagination-bullet {
    width: 1.2rem;
    height: 1.2rem;
    background-color: #ddd;
    opacity: 0.6;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
}

.brand-swiper .swiper-pagination-bullet-active {
    width: 3rem;
    border-radius: 0.6rem;
    background-color: var(--primary-color);
    opacity: 1;
}

.brand-swiper .swiper-button-next,
.brand-swiper .swiper-button-prev {
    display: none;
}


.certificate-section {
    padding: 8rem 0;
    background-color: var(--light-bg);
    position: relative;
}

.certificate-section .w {
    position: relative;
}

.certificate-section h2,
.awards-section h2 {
    font-size: 6rem;
    color: var(--title-color);
    text-align: center;
}

.certificate-section h2:after,
.awards-section h2:after {
    left: 50%;
    transform: translateX(-50%);
}

.certificate-section p,
.awards-section p {
    text-align: center;
    max-width: 85%;
    margin: 0 auto 4rem;
}

.certificate-swiper {
    padding: 3rem 0;
    position: relative;
}

.certificate-swiper .swiper-slide {
    height: 100%;
    display: flex;
    justify-content: center;
}

.certificate-item {
    border: 1px solid var(--border-color);
    padding: 1rem;
    background-color: #fff;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    width: 100%;
    max-width: 30rem;
}

.certificate-item:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.1);
}

.certificate-next,
.certificate-prev {
    position: absolute;
    top: 65%;
    transform: translateY(-50%);
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(248, 248, 248, 0.8);
    color: var(--primary-color);
    box-shadow: 0 0.2rem 0.5rem rgba(0, 0, 0, 0.1);
    z-index: 10;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition)
}

.certificate-next {
    right: -4rem;
}

.certificate-prev {
    left: -4rem;
}

.certificate-next:after,
.certificate-prev:after {
    font-size: 1.8rem;
    font-family: 'swiper-icons';
    color: rgba(185, 185, 185, 1);
}

.certificate-next:after {
    content: 'next';
}

.certificate-prev:after {
    content: 'prev';
}

.certificate-next:hover,
.certificate-prev:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.certificate-next:hover:after,
.certificate-prev:hover:after {
    color: #fff;
}

.certificate-main {
    width: 100%;
    margin-top: 4rem;
    text-align: center;
}

.certificate-main img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}


.awards-section {
    padding: 8rem 0;
    background-color: #fff;
}

.awards-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(25rem, 1fr));
    gap: 2rem;
}

.award-item {
    border: 1px solid var(--border-color);
    padding: 1rem;
    background-color: #fff;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.award-item:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.1);
}


.exhibition-section {
    padding: 2rem 0 8rem;
    background-color: var(--light-bg);
}

.exhibition-section h2 {
    text-align: center;
    font-size: 6rem;
    color: var(--title-color)
}

.exhibition-section h2:after {
    left: 50%;
    transform: translateX(-50%);
}

.exhibition-section p {
    text-align: center;
    max-width: 85%;
    margin: 0 auto 4rem;
}

.exhibition-swiper {
    padding-bottom: 5rem;
    overflow: hidden;
}

.exhibition-swiper .swiper-wrapper {
    display: flex;
}

.exhibition-swiper .swiper-slide {
    height: auto;
    width: auto;
}

.exhibition-swiper .swiper-pagination {
    position: relative;
    margin-top: 20px;
    bottom: 0;
}

.exhibition-swiper .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background-color: #ddd;
    opacity: 0.6;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.exhibition-swiper .swiper-pagination-bullet-active {
    width: 30px;
    border-radius: 6px;
    background-color: var(--primary-color);
    opacity: 1;
}

.exhibition-item {
    background-color: #fff;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.05);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
}

.exhibition-item:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.1);
}

.exhibition-item a {
    display: block;
    height: 100%;
    width: 100%;
    color: inherit;
    text-decoration: none;
    position: relative;
    z-index: 2;
}

.exhibition-item img {
    width: 100%;
    height: 25rem;
    object-fit: cover;
    transition: var(--transition);
}

.exhibition-item:hover img {
    filter: grayscale(30%);

}

.exhibition-info {
    padding: 2rem;
    flex-grow: 1;
}

.exhibition-date {
    display: flex;
    align-items: center;

    color: #fff;
    background-color: #0166B8;
    padding: 0.5rem 1rem;
    border-radius: 0.4rem;
    margin-bottom: 1.5rem;
    width: fit-content;
}

.exhibition-date:before {
    content: '';
    background: url('../images/time.png') no-repeat center;
    width: 1.6rem;
    height: 1.6rem;
    display: inline-block;
    margin-right: 0.5rem;
}

.exhibition-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--title-color);
    overflow: hidden;
    text-overflow: -o-ellipsis-lastline;
    text-overflow: ellipsis;
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    height: 74px;
}

.exhibition-info p {
    max-width: 100%;
    text-align: left;
    margin-bottom: 1.5rem;
    overflow: hidden;
    text-overflow: -o-ellipsis-lastline;
    text-overflow: ellipsis;
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    height: 74px;
}

.exhibition-item .arrow-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 4rem;
    height: 4rem;
    background: url('../images/jt.png') no-repeat center;
    background-size: contain;
    z-index: 3;
    opacity: 0;
    transition: var(--transition);
}

.exhibition-item:hover .arrow-icon {
    opacity: 1;
}

.exhibition-swiper .swiper-pagination {
    position: relative;
    margin-top: 3rem;
    bottom: 0;
}

.exhibition-swiper .swiper-button-next,
.exhibition-swiper .swiper-button-prev {
    display: none;
}

@media (max-width: 1200px) {
    .exhibition-swiper .swiper-slide {
        width: calc(33.333% - 15px) !important;
    }
}

@media (max-width: 992px) {
    .exhibition-swiper .swiper-slide {
        width: calc(50% - 10px) !important;
    }

    .about-head {
        flex-direction: column;
        /* 垂直排列 */
    }

    .about-title-container {
        display: flex;
        justify-content: baseline;
        flex-direction: row;
        gap: 4rem;
    }

    .btn-container {
        text-align: center
    }
}

@media (max-width: 576px) {
    .exhibition-swiper .swiper-slide {
        width: 100% !important;
    }
}


.footer {
    background-color: var(--dark-bg);
    color: var(--light-text);
}

.footer-top {
    background-color: var(--dark-bg);
}

.footer-top .w {
    border-bottom: 1px solid #2E3038;
    padding: 6.6rem 0 4.4rem
}

.footer-top-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-top-item {
    display: flex;
    align-items: center;
    margin: 1rem 0;
}

.footer-icon {
    margin-right: 1.5rem;
}

.footer-icon img {
    width: 3.4rem;
}

.footer-info h4 {
    color: var(--light-text);
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
}

.footer-info p {
    color: var(--light-text);
    opacity: .5;

    margin-bottom: 0;
}

.footer-info p a {
    color: var(--light-text);
    transition: var(--transition);
}

.footer-info p a:hover {
    color: var(--secondary-color);
    opacity: 1;
}

.footer-middle {
    padding: 6rem 0 4rem;
    background-color: var(--dark-bg);
}

.footer-columns {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-column {
    flex-basis: 23%;
    margin-bottom: 3rem;
}

.footer-column h3 {
    color: #fff;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
    font-size: 1.8rem;
}

.footer-column h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 4rem;
    height: 0.2rem;
    background-color: var(--secondary-color);
}

.footer-column h3+p {
    color: #fff;
    font-weight: normal;
}

.footer-column p {
    color: #a7a7a7;
    line-height: 1.6;
    margin-bottom: 1.5rem;

}

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

.footer-column ul li {
    margin-bottom: 1rem;
}

.footer-column ul li a {
    color: #a7a7a7;
    transition: var(--transition);

}

.footer-column ul li a:hover {
    color: var(--secondary-color);
    padding-left: 0.5rem;
}

.inquiry-form {
    display: flex;
    flex-direction: column;
}

.form-control {
    background-color: #222431;
    border: none;
    color: #fff;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0.3rem;
}

textarea.form-control {
    font-family: '微软雅黑';
    height: 8rem;
    resize: none;
}



.social-links a {
    display: inline-block;
    margin-right: 1.5rem;
    transition: var(--transition);
}

.social-links a img {
    width: 2.4rem;
    height: 2.4rem;
    transition: var(--transition);
}

.social-links a:hover img {
    transform: translateY(-0.3rem);
}

.contact-info p {
    margin-bottom: 15px;
}

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

.contact-item img {
    width: 2rem;
    height: 2rem;
    margin-right: 1rem;
    margin-top: 0.3rem;
}

.contact-info p a {
    color: var(--light-text);
}

.contact-info p a:hover {
    color: var(--secondary-color);
}

.btn-inquiry {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    width: 100%;
    color: #fff;
    font-size: 1.8rem;
}

.btn-inquiry:hover {
    background-color: var(--secondary-color);
    color: #fff
}

.footer-bottom {
    background-color: var(--dark-bg);
}

.footer-bottom .w {
    padding: 4rem 0;
    border-top: 1px solid #2E3038;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom-left {
    display: flex;
    align-items: center;
}

.footer-logo {
    margin-right: 2rem;
}

.footer-logo img {
    max-width: 15rem;
}

.copyright {

    color: #a7a7a7;
}

.copyright p {
    margin-bottom: 0;
    margin-left: 2rem;
    color: var(--light-text);
    opacity: .8;
}

.footer-bottom-right {
    display: flex;
    align-items: center;
}

.social-links-bottom {
    display: flex;
}

.social-links-bottom a {
    display: inline-block;
    margin-left: 1.5rem;
    transition: var(--transition);
}

.social-links-bottom a img {
    width: 2.4rem;
    height: 2.4rem;
    transition: var(--transition);
}

.social-links-bottom a:hover img {
    transform: translateY(-0.3rem);
}

@media (max-width: 992px) {
    .footer-bottom-left {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-logo {
        margin-right: 0;
        margin-bottom: 15px;
    }
}

@media (max-width: 768px) {
    .footer-bottom .w {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-left {
        flex-direction: column;
        align-items: center;
        margin-bottom: 20px;
    }

    .copyright {
        text-align: center;
    }

    .social-links-bottom {
        justify-content: center;
    }

    .social-links-bottom a {
        margin: 0 10px;
    }
}


.social-sidebar {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
    overflow: hidden;
}

.social-sidebar-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4.5rem;
    height: 4.5rem;
    line-height: 4.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.social-sidebar-item:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: all 0.3s ease;
}

.social-sidebar-item:hover:before {
    transform: translateX(0);
}

.social-sidebar-item img {

    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.social-sidebar-item:hover img {
    transform: scale(1.2);
}

.social-sidebar-item.whatsapp {
    background-color: #25D366;
}

.social-sidebar-item.email {
    background-color: #0166B8;
}

.social-sidebar-item.facebook {
    background-color: #3b5998;
}

.social-sidebar-item.twitter {
    background-color: #1DA1F2;
}

.social-sidebar-item.linkedin {
    background-color: #0077b5;
}

.social-sidebar-item.back-to-top {
    display: none;
    background-color: #0166B8;
    color: var(--light-text);

    transition: var(--transition);

}



.social-sidebar-item.back-to-top.visible {
    opacity: 1;

    visibility: visible;

}

.social-sidebar-item.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.social-sidebar-item.back-to-top:hover {
    background-color: var(--secondary-color);
    color: var(--text-color);
}

.social-sidebar-item.back-to-top i {
    font-size: 1.8rem;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .social-sidebar {
        display: none;
    }
}


@media (max-width: 1200px) {
    .w {
        padding: 0 3rem;
    }
}

@media (max-width: 992px) {
    .main-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-active {
        display: block;
        position: absolute;
        top: 8rem;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
        z-index: 999;
        background-color: var(--dark-bg);
    }

    .main-nav ul li a {
        padding: 0.5rem 0 1.2rem 0;
        display: block;
        width: 100%;
        border: none;
        border-bottom: 1px solid #fff;
        text-align: center
    }

    .main-nav ul li a:before {
        height: 0.1rem;
        bottom: -1px;
    }

    .mobile-menu-active ul {
        flex-direction: column;
        padding: 2rem;
    }

    .mobile-menu-active ul li {
        margin: 1rem 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.8rem;
    }

    .stat-box {
        flex-basis: calc(50% - 2rem);
        margin-bottom: 2rem;
    }

    .footer-column {
        flex-basis: 48%;
    }

    .hero-swiper .swiper-pagination {
        text-align: center;
        bottom: 2.2rem;
    }

    .about-section h2, .stat-number dl dt, .products-section h2, .brand-section h2, .certificate-section h2, .awards-section h2, .exhibition-section h2 {
        font-size: 3.2rem;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.8rem;
    }

    .stat-box {
        flex-basis: 100%;
    }

    .product-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 1rem;
    }

    .footer-column {
        flex-basis: 100%;
    }

    .footer-bottom .w {
        flex-direction: column;
        text-align: center;
    }

    .footer-logo {
        margin: 2rem 0;
    }

    .social-links {
        display: none;
    }

    .social-links-mobile {
        display: flex;
        justify-content: center;
        margin-top: 2rem;
    }

    .social-links-mobile a {
        margin: 0 1rem;
    }
}

@media (max-width: 576px) {
    .header .w {
        height: 6rem;
    }

    .logo img {
        max-height: 4rem;
    }


    .hero-content {
        padding: 0 2rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .mobile-menu-active {
        top: 6rem;
    }

    .mobile-menu-btn {
        width: 2.5rem;
        height: 1.8rem;
    }

    .footer-top {
        padding: 5rem 0 3rem;
    }
}


.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-close {
    position: absolute;
    top: 3rem;
    right: 3rem;
    color: var(--light-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-close:hover {
    color: var(--secondary-color);
}

.search-wrapper {
    width: 80%;
    max-width: 800px;
}

.search-form {
    display: flex;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 1rem;
    margin-bottom: 3rem;
}

.search-form input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--light-text);
    font-size: 1.5rem;
    padding: 1rem 0;
}

.search-form input:focus {
    outline: none;
}

.search-form button {
    background: transparent;
    border: none;
    color: var(--light-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-form button:hover {
    color: var(--secondary-color);
}

.search-suggestions {
    color: var(--light-text);
}

.search-suggestions h4 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: rgba(255, 255, 255, 0.6);
}

.suggestion-tags a {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light-text);
    padding: 0.5rem 1.5rem;
    border-radius: 3rem;
    margin: 0 1rem 1rem 0;
    transition: var(--transition);
}

.suggestion-tags a:hover {
    background-color: var(--secondary-color);
    color: var(--text-color);
}

.product-card.empty {
    background-color: transparent;
    box-shadow: none;
    pointer-events: none;
}


@media (max-width: 1024px) {
    .top-info-bar {
        display: none;
    }

    .header {
        top: 0;
    }
}