:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --dark-blue: #0a192f;
    --light-bg: #f8f9fa;
    --hero-bg-dark: #101825;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    overflow-x: hidden;
}

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

.text-justify {
    text-align: justify;
}

.section-padding {
    padding: 25px 0px 40px 0px;
}

.letter-spacing-2 {
    letter-spacing: 2px;
}
.letter-spacing-3 {
    letter-spacing: 3px;
}
.letter-spacing-1 {
    letter-spacing: 1px;
}

.x-small {
    font-size: 0.75rem;
}

/* Header & Navbar */
.navbar {
    background-color: rgba(0, 0, 0, 0.3); /* 半透明黑色背景 */
    transition: background-color 0.3s ease, padding 0.3s ease;
}
.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.navbar-nav .nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.9;
    transition: color 0.3s, opacity 0.3s;
}

/* Dark Navbar (Initial State) */
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9);
}
.navbar-dark .navbar-nav .nav-link:hover, 
.navbar-dark .navbar-nav .nav-link.active {
    opacity: 1;
    color: #fff !important;
}
.navbar-dark .btn-lang-toggle {
    color: #fff !important;
}

/* Light Navbar (Scrolled State) */
.navbar-light .navbar-nav .nav-link {
    color: rgba(0, 0, 0, 0.75);
}
.navbar-light .navbar-nav .nav-link:hover, 
.navbar-light .navbar-nav .nav-link.active {
    opacity: 1;
    color: #000 !important;
}
.navbar-light .btn-lang-toggle {
    color: #333 !important;
}

/* Hero Section */
.hero-section {
    /* min-height: 100vh; */
    position: relative;
    overflow: hidden;
}

/* Night Sky Gradient Background */
.bg-hero-night {
    background: radial-gradient(circle at 50% 0%, #1a2a4a 0%, #0d1626 50%, #050a12 100%);
    /* min-height: 100vh; */
    position: relative;
}
.bg-hero-night::before {
    /* Starry effect placeholder */
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(white 1px, transparent 1px), radial-gradient(rgba(255,255,255,0.5) 1px, transparent 1px);
    background-size: 50px 50px, 100px 100px;
    background-position: 0 0, 25px 25px;
    opacity: 0.1;
    z-index: 0;
}

.text-blue-light {
    color: #a0c4ff;
}

.text-shadow-lg {
    text-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.hero-reflection {
    content: '';
    position: absolute;
    bottom: -40px;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.1), transparent);
    filter: blur(20px);
    transform: scaleY(-0.5);
    opacity: 0.5;
    pointer-events: none;
}

/* Animations */
@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-fade-down { animation: fadeDown 1s ease-out forwards; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fadeUp 1s ease-out forwards; }

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
.animate-zoom-in { animation: zoomIn 1.2s ease-out forwards; }

.delay-200 { animation-delay: 0.3s; }

.hero-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
    margin-bottom: 0;
}

.hero-section .carousel-control-prev,
.hero-section .carousel-control-next {
    z-index: 10;
}

.hero-indicators button {
    width: 10px !important;
    height: 10px !important;
    background-color: transparent !important;
    border: 1px solid rgba(255, 255, 255, 0.6) !important;
    border-radius: 50%;
    opacity: 1 !important;
    transition: all 0.3s;
    margin: 0 4px !important;
}

.hero-indicators button.active {
    background-color: #fff !important;
    border-color: #fff !important;
    transform: scale(1.2);
}

/* Popular Products */
.bg-primary-gradient {
    background: linear-gradient(180deg, #3B77B5 0%, #77ABD7 100%);
}

.product-card-large {
    transition: transform 0.3s;
}

.product-card-large:hover {
    transform: translateY(-5px);
}

.feature-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.8rem;
}

.feature-icon i {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.product-card-small, .product-card-mini {
    transition: box-shadow 0.3s;
}

.product-card-small:hover, .product-card-mini:hover {
    box-shadow: 0 .5rem 1rem rgba(0,0,0,.15)!important;
}

/* Video Banner */
.video-banner {
    position: relative;
    max-height: 600px;
}
.video-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.3);
    transition: background 0.3s;
}
.video-banner:hover::before {
    background: rgba(0,0,0,0.1);
}
.play-button {
    transition: transform 0.3s;
    z-index: 2;
}
.play-button:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

/* Recommended Cases */
.case-card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-color: #fff;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.case-card .card-img-wrapper {
    overflow: hidden;
    height: 220px;
}

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

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

.case-card .card-body {
    padding: 1.5rem;
    position: relative;
    background-color: #fff;
}

.case-card .card-title {
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: #000;
}

.case-card .card-text {
    color: #6c757d;
    font-size: 0.85rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 1.5rem;
    min-height: 5.5em; /* Ensure alignment */
}

.case-card .btn-case {
    background-color: #2651a6;
    color: #fff;
    border-radius: 2px;
    padding: 0.35rem 1.5rem;
    font-size: 0.8rem;
    border: none;
    transition: background-color 0.3s;
    text-decoration: none;
    display: inline-block;
}

.case-card .btn-case:hover {
    background-color: #1a3c80;
    color: #fff;
}

/* Case Carousel Indicators */
#caseCarousel {
    padding-bottom: 40px;
}

.case-indicators {
    bottom: 0;
}

.case-indicators button {
    width: 10px !important;
    height: 10px !important;
    border-radius: 50%;
    background-color: #bbb !important;
    border: none !important;
    margin: 0 6px !important;
    opacity: 1 !important;
    transition: all 0.3s ease;
}

.case-indicators button.active {
    background-color: #2651a6 !important;
    width: 25px !important;
    border-radius: 5px;
}

/* News */
.news-featured img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: 6px;
}

.news-list .card {
    border-bottom: 1px solid #eee !important;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem !important;
}

.news-list .card:last-child {
    border-bottom: none !important;
    padding-bottom: 0;
    margin-bottom: 0 !important;
}

.news-img-wrapper {
    height: 110px;
    overflow: hidden;
    border-radius: 6px;
}

.news-img-wrapper img {
    transition: transform 0.5s ease;
}

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

.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* About Us - Updated */
.about-section .carousel-item {
    height: 500px;
    background-color: #fff;
}

.about-section .row {
    height: 100%;
}

.about-center-img, .about-side-img {
    height: 100%;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.about-side-img img, .about-center-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.about-side-img:hover img, .about-center-img:hover img {
    transform: scale(1.05);
}

#aboutCarousel .carousel-caption {
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
    width: 100%;
    margin-bottom: 0 !important;
    padding: 2rem 2rem 4rem 2rem !important;
    text-align: left;
}

.about-indicators {
    margin-bottom: 1.5rem !important;
    z-index: 10;
}

.about-indicators button {
    width: 8px !important;
    height: 8px !important;
    border-radius: 50%;
    background-color: transparent !important;
    border: 1px solid rgba(255,255,255,0.7) !important;
    margin: 0 4px !important;
    opacity: 1 !important;
    transition: all 0.3s ease;
}

.about-indicators button.active {
    background-color: #fff !important;
    border-color: #fff !important;
    width: 25px !important;
    border-radius: 4px;
}

/* Corporate Strength - Optimized */
.bg-light-blue {
    background-color: #7bb1e9; /* Light blue from image */
}

.corporate-strength {
    min-height: 450px;
}

.strength-bg-img {
    z-index: 0;
    pointer-events: none;
}

.strength-bg-img img {
    mask-image: linear-gradient(to right, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
    -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
}

.strength-card {
    position: relative;
    z-index: 10;
    margin-bottom: -120px; /* Overlap into the section below */
    max-width: 1000px;
}

.strength-cert-btn {
    min-height: 180px;
    background-color: #2b65bd !important;
    cursor: pointer;
    transition: all 0.3s ease;
}

.strength-cert-btn:hover {
    background-color: #1e4d94 !important;
    transform: translateY(-5px);
}

.cert-arrow {
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 10px solid #2b65bd;
    left: -10px !important;
}

.strength-cert-btn:hover .cert-arrow {
    border-right-color: #1e4d94;
}

.strength-card .row {
    min-height: 180px;
}

/* Footer */
.footer-contact .form-control:focus {
    box-shadow: none;
    border-color: var(--primary-color);
}

.footer-header-line {
    width: 30px;
    height: 2px;
    background-color: #fff;
}

.hover-white:hover {
    color: #fff !important;
}

.bg-dark-light {
    background-color: #333;
}

.social-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.social-btn:hover {
    transform: translateY(-3px);
    opacity: 0.9;
}

.footer-nav-group h6 {
    letter-spacing: 1px;
}

.footer-desc p {
    margin-bottom: 1rem;
}

.footer-contact-bar {
    background-color: #2c313a; /* Blueish gray bar */
    border-top: 1px solid rgba(255,255,255,0.03);
}

.footer-copyright-bar {
    background-color: #1a1d23; /* Darkest bar */
}

.footer-contact-bar i {
    color: rgba(255,255,255,0.4);
}

.footer-contact-bar .text-white {
    font-size: 1rem;
    font-weight: 400;
}

.footer-contact-bar .x-small {
    font-size: 0.7rem;
    letter-spacing: 1px;
    margin-bottom: 2px;
}
.diagonal-gradient {
            background: linear-gradient(to bottom right, #f3f3f7, #DCDCDE, #f3f3f7, #BDBDBD);
        }
.hfzj{ margin-left:0px!important;}
.kuang{ border:1px solid #E7E7E7; border-top:none; border-bottom-left-radius:10px; border-bottom-right-radius:10px;}
.dakuang{ border:1px solid #E7E7E7; border-radius:10px; padding-top:15px;}
.jiange{ width:48%!important; margin:0 1%;}
.dingge{ margin-top: 105px;}
.yanseliu{ color: #666!important;}
.yansesan{ color: #333!important;}
.yanseliul{ color: #666!important; text-align: left!important;}
.yansesanl{ color: #333!important; text-align: left!important;}
.jianju1{ width: 25.3333%!important;}
.jianju2{ width: 18.3333%!important;}
.jiagao{margin-bottom: 100px!important;}
.carousel-indicators [data-bs-target] {
    width: 12px!important;
    height: 12px!important;
    background-color: #DEDEDE;}
.fensi{ margin-bottom: 40px!important;}
.anlin{border-radius: 30px !important; border: 1px solid #dedede; color: #666;}
.anlin:hover{border-radius: 30px !important; color: #fff;background: linear-gradient(to right, #144BA3, #3474C7);}
.anlin.active{border-radius: 30px !important; color: #fff;background: linear-gradient(to right, #144BA3, #3474C7);}
.alfg{ margin-bottom: 30px;}
.dazi{ font-size: 2rem; color:#333!important;}
.xiaozi{font-size: 1.25rem; color:#134AA2!important;}
.yanse{ color: #134AA2!important;}
.contantys{ padding-top: 30px!important; border-top: 3px solid #134AA2!important;}
.contantzs{ color: #134AA2!important;}
.contantan{ background: #134AA2!important; width: 50%!important; margin-left: 25%!important; border-radius: 30px!important; margin-top: 30px!important;}
.contantkuan{ width: 90%; margin-left: 5%; padding-bottom: 30px!important;}
.yuanjia{ border-radius: 35px!important; font-size: 0.85rem!important;}
.cdul{ width: 45vw;}
.cdulli{ width: 25%!important; float: left;}
.pchf{display: block;}
.pcwap{ display: none;}
.henfujg{padding-top: 1rem !important; padding-bottom: 1rem !important;}
.henfuzt{ font-size: 1rem!important;}
.henfuzt.active{font-weight: bold!important;}
.padjg{ padding: 0 4%; line-height: 28px;}
.xxwtu{ width: 20%!important;}
.xxwzi{ width: 80%!important;}
.wapdx{ width: 1.2em!important; height: 1.2em!important;}
.zigao{ text-align: center!important;}
.dncaidan{ display:block!important;}
.wapcaidan{ display:none!important;}
.fenyejz{ text-align: center!important; display: block!important;}
.fenyejz a{ color: #000; text-decoration: none;}
.fenyejz a:hover{ color: #2764B9; text-decoration: underline;}
.fzlctu{ width: 100%, !important;;}
.fzlctu img{ width: 100%!important;}
.zihang{display: -webkit-box;
    -webkit-line-clamp: 6; /* 限制行数为3 */
    -webkit-box-orient: vertical;
    overflow: hidden;}
.ljse{ background: #164DA5!important; color: #fff!important; border-radius: 10px!important; border: none!important;}
.hftdx{ width: 100%!important; height: 800px!important; }
.hftdx img{ width: 100%!important; height: 800px!important;}
.xztup{ text-align: center!important;}
.xztup img {
    max-height: 200px;
    width: auto;
    height: auto;
}
.cptup{text-align: center!important; width:100%;overflow: hidden;}
.cptup img{ height: 220px!important;}
.syzjg img{ height:215px!important; width: 200px!important;}
.syzjga{ overflow:hidden; height:63px;}
.topban{ width: 100%; height: auto; margin: 85px auto 50px auto; display: block;}
.topban img{ width: 100%;}
.topbanwap{display: none;}
.zctpgd img{ max-height: 580px; height: auto;}
.shipingao{ height:705px!important;}
.mianbao{ height: 70px; line-height: 70px; text-align: left; font-size: 14px; color: #666;}
.mianbao a{color: #666; text-decoration: none;}
.mianbao a:hover{color: #000; text-decoration: underline;}
.banquan{margin-left: 38%; width:62%;}
.shangyi{ width: 100%; height: auto; float: left; margin-top: 35px;}
.shangyi li{ width: 100%; line-height: 40px; text-align: left; color: #666; font-size: 14px; float: left;}
.shangyi li a{color: #000; text-decoration: none;}
.shangyi li a:hover{color: #0280DC; text-decoration: none;}
.xiayi{ width: 100%; height: auto; float: left; margin-top: 35px;}
.sydhl{height: auto;}
.nyheng{ width: 100%; height: auto; margin: 0 auto; display: block;}
.nyheng img{ width: 100%;}
.wnyheng{ display: none;}
.sydhf{    background-image: url(/site/images/syxp.png);
    background-position: center center;
    background-repeat: no-repeat;}
@media screen and (max-width:1080px) {
    .nyheng{ display: none;}
    .wnyheng{ display: block;}
    .wnyheng img{ width: 100%;}
    .sydhl{height: 90vh!important; overflow-y: auto;}
    .pchf{display: none;}
    .pcwap{ display: block;}
    .jianju1{ width: 100%!important;}
    .jianju2{ width: 50%!important;}
    .contantan{ width: 70%!important; margin-left: 15%!important;padding-top:0.75rem!important;padding-bottom:0.75rem!important;}
    .cdul{ width: 90vw;}
    .cdulli{ width: 50%!important; float: left;}
    .xxwtu{ width: 33.333%!important;}
.xxwzi{ width: 66.666%!important;}
.dncaidan{ display:none!important;}
.wapcaidan{ display:block!important; width: 100%!important; text-align: center!important;}
.jiange{ width:98%!important; margin:0 1%;}
.hftdxwap{ width: 100%!important; height: 400px!important; }
.hftdxwap img{ width: 100%!important; height: 400px!important;}
.topbanwap{ width: 100%; height: auto; margin:85px auto 0px auto; display: block;}
.topbanwap img{ width: 100%;}
.topban{ display: none;}
.shipingao{ width:100%!important;}
.banquan{width:100%; margin-left: 0px;}
.sydhf{    background-image: url(/site/images/syxp.png);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: auto 100%}
}