@charset "utf-8";
/* ===== Reset ===== */
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td{margin:0;padding:0}
table{border-collapse:collapse;border-spacing:0}
fieldset,img{border:0}
address,caption,cite,code,dfn,em,th,var{font-style:italic;font-weight:normal}
ol,ul{list-style:none}
a{color:#666;text-decoration:none}
a:focus{outline:none}
a:hover{text-decoration:underline}

/* ===== Global ===== */
body{background:#fff;overflow-x:hidden;color:#666;font-size:14px;font-family:"Microsoft YaHei","微软雅黑",Arial,sans-serif;position:relative}
.container{margin-left:auto;margin-right:auto;width:1200px}

/* ===== Scroll Animation ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== Top Header Bar ===== */
.top-header{width:100%;background:#fff;border-bottom:1px solid #eee}
.top-header .container{display:flex;align-items:center;justify-content:space-between;height:40px}
.top-header .hotline{font-size:12px;color:#888;padding-left:22px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23003c98' width='16' height='16'%3E%3Cpath d='M6.62 10.79a15.05 15.05 0 006.59 6.59l2.2-2.2a1 1 0 011.01-.24 11.36 11.36 0 003.58.57 1 1 0 011 1V20a1 1 0 01-1 1A17 17 0 013 4a1 1 0 011-1h3.5a1 1 0 011 1 11.36 11.36 0 00.57 3.58 1 1 0 01-.24 1.01l-2.2 2.2z'/%3E%3C/svg%3E") no-repeat left center}
.top-header .hotline b{font-size:18px;color:#003c98;font-family:Arial}
.top-header .top-links{display:flex;align-items:center;gap:10px}
.top-header .top-links span{font-size:12px;color:#777;padding:0 10px;border-right:1px solid #e2e2e2}
.top-header .top-links span:last-child{border-right:none}

/* ===== Main Header / Nav ===== */
.main-header{width:100%;background:#1144a3;position:relative;z-index:100}
.main-header .container{display:flex;align-items:center;justify-content:space-between;height:120px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo .logo-icon{width:50px;height:50px;flex-shrink:0}
.logo .logo-text{display:flex;flex-direction:column}
.logo .logo-text .brand{font-size:22px;font-weight:700;color:#fff;line-height:1.3;letter-spacing:1px}
.logo .logo-text .tagline{font-size:12px;color:rgba(255,255,255,.7);letter-spacing:3px}

.nav{display:flex;align-items:center;height:120px}
.nav>li{position:relative;width:110px;height:120px;display:flex;align-items:center;justify-content:center;border-left:1px solid rgba(255,255,255,.15)}
.nav>li:last-child{border-right:1px solid rgba(255,255,255,.15)}
.nav>li>a{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:#e8f0ff;font-size:16px;text-decoration:none;transition:color .3s}
.nav>li:hover>a,.nav>li.active>a{color:#65d136}

/* Dropdown */
.dropdown{display:none;position:absolute;left:0;top:120px;width:100%;background:#fff;padding:10px 0;box-shadow:0 3px 10px rgba(0,0,0,.1);z-index:200}
.dropdown a{display:block;padding:8px 15px;font-size:14px;color:#333;text-align:center;transition:color .3s}
.dropdown a:hover{color:#65d136;text-decoration:none}
.nav>li:hover .dropdown{display:block}

/* Mobile menu button */
.mobile-menu-btn{display:none;width:40px;height:40px;background:none;border:none;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.mobile-menu-btn span{display:block;width:28px;height:3px;background:#fff;border-radius:2px;transition:all .3s}

/* ===== Banner ===== */
.banner{position:relative;width:100%;height:600px;overflow:hidden}
.banner .slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity .8s ease}
.banner .slide.active{opacity:1}
.banner .slide img{width:100%;height:100%;object-fit:cover}
.banner .slide .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,20,60,.45);display:flex;flex-direction:column;align-items:center;justify-content:center}
.banner .slide .overlay h2{font-size:48px;color:#fff;font-weight:700;margin-bottom:15px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.banner .slide .overlay p{font-size:20px;color:rgba(255,255,255,.85);margin-bottom:30px}
.banner .slide .overlay .btn-learn{display:inline-block;padding:12px 40px;background:#40d76f;color:#fff;font-size:16px;border-radius:5px;text-decoration:none;transition:background .3s}
.banner .slide .overlay .btn-learn:hover{background:#36c060}
.banner-dots{position:absolute;bottom:25px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:10}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:all .3s}
.banner-dots span.active{background:#fff;transform:scale(1.2)}

/* ===== Section Title ===== */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:36px;font-weight:normal;color:#333}
.section-title .en{font-size:12px;color:#999;text-transform:uppercase;margin-bottom:8px;letter-spacing:2px}
.section-title .line{display:block;width:30px;height:2px;background:#003c98;margin:10px auto 0}

/* ===== Features ===== */
.features{width:1200px;margin:50px auto 60px;display:flex;padding-bottom:50px;border-bottom:2px solid #f3f3f3}
.features .feat-item{flex:1;text-align:center;padding:0 20px;border-right:1px dotted #c7c7c7}
.features .feat-item:last-child{border-right:none}
.features .feat-icon{width:80px;height:80px;margin:0 auto 20px}
.features .feat-item h3{font-size:18px;color:#333;margin-bottom:10px;font-weight:normal}
.features .feat-item p{font-size:15px;color:#666;line-height:22px}

/* ===== About Section ===== */
.about-section{width:1200px;margin:0 auto 60px;display:flex;gap:40px}
.about-left{flex:1}
.about-left h3{font-size:20px;font-weight:normal;color:#555}
.about-left .divider{width:30px;height:2px;background:#003c98;margin:24px 0}
.about-left .desc{font-size:15px;color:#666;line-height:30px;text-align:justify;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.about-left .btn-more{display:block;width:120px;height:45px;margin:35px 0}
.about-links{display:flex;gap:20px;margin-top:10px}
.about-links .link-card{width:160px;height:120px;background:#1155bf;border-radius:5px;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:background .3s}
.about-links .link-card:hover{background:#40d86f}
.about-links .link-card svg{width:36px;height:36px;margin-bottom:8px}
.about-links .link-card p{font-size:14px;color:#fff}
.about-right{width:470px;flex-shrink:0;background:#1155bf;border-radius:3px;padding:30px;box-sizing:border-box}
.about-right .video-title{font-size:18px;color:#fff;margin-bottom:5px;text-align:right}
.about-right .video-en{font-size:12px;color:#778cca;margin-bottom:18px;text-align:right}
.about-right .video-placeholder{width:100%;height:280px;background:rgba(0,0,0,.2);border-radius:3px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.6);font-size:14px}

/* ===== Store Showcase ===== */
.store-section{width:100%;background:#f0f0f0;padding:50px 0}
.store-list{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.store-item{width:220px;overflow:hidden;border-radius:5px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.store-item img{width:100%;height:160px;object-fit:cover;transition:transform .3s}
.store-item:hover img{transform:scale(1.05)}
.store-item p{text-align:center;padding:10px 0;font-size:14px;color:#333;background:#fff}

/* ===== Products Section ===== */
.products-section{width:100%;padding-top:60px;margin-bottom:60px;background:#f8f8f8}
.products-section .container{position:relative}
.product-tabs{display:flex;justify-content:center;gap:20px;margin-bottom:40px}
.product-tabs .tab-btn{width:170px;height:45px;line-height:45px;text-align:center;font-size:16px;background:#40d76f;color:#fff;border:none;border-radius:5px;cursor:pointer;transition:background .3s;display:flex;align-items:center;justify-content:center;gap:5px}
.product-tabs .tab-btn.active,.product-tabs .tab-btn:hover{background:#d53649}
.product-grid{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.product-card{width:280px;background:#fff;border-radius:5px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s}
.product-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.15)}
.product-card .card-img{width:100%;height:220px;overflow:hidden}
.product-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.product-card:hover .card-img img{transform:scale(1.08)}
.product-card .card-info{padding:15px}
.product-card .card-info h3{font-size:16px;color:#333;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.product-card .card-info p{font-size:13px;color:#888;line-height:20px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== Application Areas ===== */
.apply-section{width:100%;padding-top:60px;margin-bottom:70px}
.apply-list{display:flex;gap:20px;justify-content:center}
.apply-card{width:285px;height:400px;position:relative;overflow:hidden;border-radius:3px}
.apply-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.apply-card:hover img{transform:scale(1.05)}
.apply-card .apply-overlay{position:absolute;bottom:0;left:0;width:100%;height:70px;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:height .3s}
.apply-card:nth-child(1) .apply-overlay{background:#3368ba}
.apply-card:nth-child(2) .apply-overlay{background:#37c684}
.apply-card:nth-child(3) .apply-overlay{background:#9347c3}
.apply-card:nth-child(4) .apply-overlay{background:#df394c}
.apply-card .apply-overlay svg{width:40px;height:40px;margin-bottom:5px}
.apply-card .apply-overlay span{font-size:16px;color:#fff}
.apply-card .apply-overlay p{display:none;font-size:14px;color:#fff;line-height:20px;width:80%;text-align:center;margin-top:5px}
.apply-card:hover .apply-overlay{height:130px}
.apply-card:hover .apply-overlay p{display:block}

/* ===== News Section ===== */
.news-section{width:1200px;margin:0 auto 50px}
.news-main{display:flex;gap:40px}
.news-featured{width:580px;flex-shrink:0;position:relative;border-radius:3px;overflow:hidden}
.news-featured img{width:100%;height:410px;object-fit:cover}
.news-featured .caption{position:absolute;bottom:0;left:0;width:100%;padding:10px 15px;background:rgba(0,20,60,.7);color:#fff;font-size:15px;box-sizing:border-box}
.news-featured .caption small{display:block;font-size:12px;color:rgba(255,255,255,.7);margin-top:4px;line-height:20px;height:40px;overflow:hidden}
.news-list-wrap{flex:1}
.news-top{padding-bottom:20px;border-bottom:2px solid #cecece;margin-bottom:20px;display:flex;gap:20px}
.news-top .news-top-img{width:180px;height:120px;flex-shrink:0;border-radius:3px;overflow:hidden}
.news-top .news-top-img img{width:100%;height:100%;object-fit:cover}
.news-top .news-top-info h3{font-size:16px;color:#555;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-bottom:10px;border-bottom:1px solid #cecece;margin-bottom:10px}
.news-top .news-top-info h3 a{color:#555}
.news-top .news-top-info p{font-size:14px;color:#777;line-height:22px;height:44px;overflow:hidden}
.news-top .btn-more{display:block;width:120px;height:35px;margin-top:10px;text-align:center;line-height:35px;border-radius:5px;background:#1144a3;font-size:12px;color:#fff;text-decoration:none;transition:background .3s}
.news-top .btn-more:hover{background:#0d3685}
.news-items{display:flex;flex-direction:column;gap:8px}
.news-item{display:flex;align-items:center;justify-content:space-between;background:#fff;border-radius:3px;padding:6px 15px;transition:background .3s}
.news-item:hover{background:#f8f8f8}
.news-item a{font-size:14px;color:#282828;padding-left:15px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Ccircle cx='4' cy='4' r='3' fill='%231144a3'/%3E%3C/svg%3E") no-repeat left center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:350px;text-decoration:none}
.news-item:hover a{color:#1144a3}
.news-item span{font-size:14px;color:#8d8d8d;flex-shrink:0}

/* ===== Quick Options ===== */
.quick-options{width:1200px;margin:0 auto;padding:25px 0 30px;border-top:2px solid #e4e4e4;display:flex;margin-bottom:30px}
.quick-options .opt-item{flex:1;text-align:center;border-right:1px dotted #c7c7c7;padding:0 10px}
.quick-options .opt-item:last-child{border-right:none}
.quick-options .opt-item a{text-decoration:none;font-size:14px;color:#555;display:block;transition:color .3s}
.quick-options .opt-item:hover a{color:#1144a3;font-weight:bold}
.quick-options .opt-icon{width:50px;height:50px;margin:0 auto 12px}

/* ===== Footer ===== */
.site-footer{width:100%;background:#f2f2f2;padding-top:60px}
.footer-content{display:flex;gap:30px}
.footer-col{width:170px}
.footer-col h3{font-size:16px;color:#333;margin-bottom:15px}
.footer-col h3 a{color:#333;text-decoration:none}
.footer-col p{font-size:12px;color:#666;line-height:30px}
.footer-col p a{color:#666;text-decoration:none}
.footer-col p a:hover{color:#1144a3}
.footer-contact{padding-left:85px;border-left:1px solid #d6d6d6;width:245px}
.footer-contact .phone{font-size:28px;color:#1b43c4;font-weight:bold;font-family:Arial;padding-bottom:10px;border-bottom:1px solid #d6d6d6;margin-bottom:15px;display:block}
.footer-contact b{display:block;font-size:12px;color:#333;margin-bottom:5px}
.footer-bottom{width:100%;height:75px;background:#303032;margin-top:60px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;box-sizing:border-box}
.footer-bottom p{font-size:12px;color:#fff}
.footer-bottom p a{color:#fff;text-decoration:none}
.footer-bottom p a:hover{color:#65d136}
.footer-links{display:flex;gap:15px}
.footer-links a{font-size:12px;color:#999;text-decoration:none}
.footer-links a:hover{color:#fff}

/* ===== Inner Page Banner ===== */
.page-banner{width:100%;height:400px;position:relative;overflow:hidden}
.page-banner img{width:100%;height:100%;object-fit:cover}
.page-banner .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(17,68,163,.6);display:flex;flex-direction:column;align-items:center;justify-content:center}
.page-banner .overlay h1{font-size:40px;color:#fff;font-weight:normal}
.page-banner .overlay p{font-size:14px;color:rgba(255,255,255,.7);margin-top:10px}

/* ===== Breadcrumb ===== */
.breadcrumb{width:1200px;margin:20px auto;padding:15px 0;border-bottom:1px solid #eee;font-size:14px;color:#888}
.breadcrumb a{color:#1144a3;text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{margin:0 8px;color:#ccc}
.breadcrumb .current{color:#333}

/* ===== Page Content ===== */
.page-content{width:1200px;margin:30px auto 60px;min-height:400px}

/* About page */
.about-detail h3{font-size:22px;color:#333;margin:30px 0 15px;padding-bottom:10px;border-bottom:2px solid #1144a3;display:inline-block}
.about-detail p{font-size:15px;color:#666;line-height:28px;margin-bottom:15px;text-indent:2em}
.timeline{position:relative;padding:20px 0 20px 30px;margin:30px 0}
.timeline::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:#1144a3}
.timeline .tl-item{position:relative;padding:15px 0 30px 30px}
.timeline .tl-item::before{content:'';position:absolute;left:-36px;top:20px;width:14px;height:14px;background:#40d76f;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 3px #1144a3}
.timeline .tl-item .tl-year{font-size:18px;color:#1144a3;font-weight:bold;margin-bottom:8px}
.timeline .tl-item .tl-text{font-size:14px;color:#666;line-height:24px}
.culture-cards{display:flex;gap:25px;margin:30px 0}
.culture-card{flex:1;background:#f8f9ff;border-radius:8px;padding:30px 25px;text-align:center;border:1px solid #e8ecf5;transition:transform .3s,box-shadow .3s}
.culture-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(17,68,163,.15)}
.culture-card .culture-icon{width:60px;height:60px;margin:0 auto 15px}
.culture-card h4{font-size:18px;color:#1144a3;margin-bottom:10px}
.culture-card p{font-size:14px;color:#666;line-height:24px}
.team-list{display:flex;gap:25px;flex-wrap:wrap;margin:30px 0}
.team-member{width:260px;text-align:center;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.08);transition:transform .3s}
.team-member:hover{transform:translateY(-3px)}
.team-member .avatar{width:100%;height:220px;overflow:hidden}
.team-member .avatar img{width:100%;height:100%;object-fit:cover}
.team-member .member-info{padding:15px}
.team-member .member-info h4{font-size:16px;color:#333;margin-bottom:5px}
.team-member .member-info p{font-size:13px;color:#888}

/* ===== Product/News List Page ===== */
.list-grid{display:flex;flex-wrap:wrap;gap:25px;justify-content:flex-start}
.list-grid .product-card{width:280px}
.list-grid .news-card{width:580px;display:flex;gap:20px;background:#fff;border-radius:5px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;padding:20px;box-sizing:border-box}
.list-grid .news-card:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(0,0,0,.12)}
.list-grid .news-card .news-img{width:200px;height:150px;flex-shrink:0;border-radius:3px;overflow:hidden}
.list-grid .news-card .news-img img{width:100%;height:100%;object-fit:cover}
.list-grid .news-card .news-info{flex:1}
.list-grid .news-card .news-info h3{font-size:18px;color:#333;margin-bottom:8px}
.list-grid .news-card .news-info h3 a{color:#333;text-decoration:none}
.list-grid .news-card .news-info h3 a:hover{color:#1144a3}
.list-grid .news-card .news-info .date{font-size:13px;color:#999;margin-bottom:10px}
.list-grid .news-card .news-info .summary{font-size:14px;color:#777;line-height:22px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ===== Detail Page ===== */
.detail-wrap{display:flex;gap:40px}
.detail-main{flex:1}
.detail-main .detail-img{width:100%;max-height:500px;overflow:hidden;border-radius:5px;margin-bottom:30px}
.detail-main .detail-img img{width:100%;height:auto;object-fit:cover}
.detail-main h1{font-size:28px;color:#333;margin-bottom:10px}
.detail-main .detail-meta{font-size:13px;color:#999;margin-bottom:20px;padding-bottom:15px;border-bottom:1px solid #eee}
.detail-main .detail-body p{font-size:15px;color:#555;line-height:28px;margin-bottom:15px;text-indent:2em}
.detail-main .detail-body img{max-width:100%;border-radius:5px;margin:15px 0}
.param-table{width:100%;border-collapse:collapse;margin:20px 0}
.param-table th,.param-table td{padding:12px 15px;border:1px solid #e4e4e4;font-size:14px;text-align:left}
.param-table th{background:#f0f4ff;color:#333;font-weight:normal;width:150px}
.param-table td{color:#666}
.features-list{margin:20px 0}
.features-list .feature-item{display:flex;align-items:flex-start;gap:15px;margin-bottom:15px}
.features-list .feature-item .feat-icon-sm{width:40px;height:40px;flex-shrink:0;background:#1155bf;border-radius:50%;display:flex;align-items:center;justify-content:center}
.features-list .feature-item .feat-text h4{font-size:15px;color:#333;margin-bottom:5px}
.features-list .feature-item .feat-text p{font-size:13px;color:#888;line-height:20px}
.related-products{margin-top:40px;padding-top:30px;border-top:1px solid #eee}
.related-products h3{font-size:20px;color:#333;margin-bottom:20px}
.related-grid{display:flex;gap:20px}
.related-grid .product-card{width:260px}

/* ===== News Navigation ===== */
.news-nav{display:flex;justify-content:space-between;margin-top:30px;padding-top:20px;border-top:1px solid #eee}
.news-nav a{font-size:14px;color:#1144a3;text-decoration:none}
.news-nav a:hover{text-decoration:underline}

/* ===== Sidebar ===== */
.detail-sidebar{width:280px;flex-shrink:0}
.sidebar-box{background:#f8f9ff;border-radius:5px;padding:20px;margin-bottom:20px}
.sidebar-box h3{font-size:16px;color:#1144a3;margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid #1144a3}
.sidebar-box ul li{padding:8px 0;border-bottom:1px dashed #e4e4e4}
.sidebar-box ul li:last-child{border-bottom:none}
.sidebar-box ul li a{font-size:13px;color:#555;text-decoration:none;transition:color .3s}
.sidebar-box ul li a:hover{color:#1144a3}
.sidebar-box .contact-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px}
.sidebar-box .contact-item svg{width:20px;height:20px;flex-shrink:0;color:#1144a3;margin-top:2px}
.sidebar-box .contact-item p{font-size:13px;color:#555;line-height:20px}

/* ===== Contact Page ===== */
.contact-info{display:flex;gap:30px;margin:30px 0}
.contact-card{flex:1;background:#f8f9ff;border-radius:8px;padding:30px;text-align:center;border:1px solid #e8ecf5;transition:transform .3s}
.contact-card:hover{transform:translateY(-3px);box-shadow:0 5px 15px rgba(17,68,163,.1)}
.contact-card .c-icon{width:50px;height:50px;margin:0 auto 15px;color:#1144a3}
.contact-card h4{font-size:16px;color:#333;margin-bottom:8px}
.contact-card p{font-size:14px;color:#666;line-height:24px}
.contact-form{background:#f8f9ff;border-radius:8px;padding:40px;margin:30px 0}
.contact-form h3{font-size:22px;color:#333;margin-bottom:25px;text-align:center}
.form-row{display:flex;gap:20px;margin-bottom:20px}
.form-group{flex:1}
.form-group label{display:block;font-size:14px;color:#555;margin-bottom:8px}
.form-group input,.form-group textarea{width:100%;padding:10px 15px;border:1px solid #ddd;border-radius:5px;font-size:14px;color:#333;font-family:inherit;box-sizing:border-box;transition:border-color .3s}
.form-group input:focus,.form-group textarea:focus{border-color:#1144a3;outline:none}
.form-group textarea{height:120px;resize:vertical}
.btn-submit{display:block;width:200px;height:45px;margin:20px auto 0;background:#1144a3;color:#fff;font-size:16px;border:none;border-radius:5px;cursor:pointer;transition:background .3s}
.btn-submit:hover{background:#0d3685}

/* ===== Image Fallback ===== */
.img-fallback{background:linear-gradient(135deg,#1144a3,#40d76f);display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:200px;color:#fff;font-size:14px;border-radius:8px}

/* ===== Return to Top ===== */
.back-to-top{position:fixed;bottom:60px;right:30px;width:45px;height:45px;background:#1144a3;color:#fff;border:none;border-radius:5px;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:999;transition:background .3s;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.back-to-top:hover{background:#40d76f}
.back-to-top svg{width:20px;height:20px}

/* ===== Responsive ===== */
@media(max-width:1200px){
  .container,.top-header .container,.about-section,.news-section,.quick-options,.page-content,.breadcrumb{width:96%;padding:0 2%;box-sizing:border-box}
  .product-grid .product-card{width:calc(33.33% - 20px)}
  .list-grid .product-card{width:calc(33.33% - 17px)}
}
@media(max-width:1024px){
  .nav>li{width:90px}
  .nav>li>a{font-size:14px}
  .about-section{flex-direction:column}
  .about-right{width:100%}
  .news-main{flex-direction:column}
  .news-featured{width:100%}
  .apply-list{flex-wrap:wrap}
  .apply-card{width:calc(50% - 10px)}
  .features{flex-wrap:wrap}
  .features .feat-item{flex:1 0 50%;margin-bottom:20px;border-right:none}
  .detail-wrap{flex-direction:column}
  .detail-sidebar{width:100%}
  .footer-content{flex-wrap:wrap}
  .footer-contact{padding-left:0;border-left:none;width:100%;margin-top:20px}
}
@media(max-width:768px){
  .top-header .top-links{display:none}
  .main-header .container{height:70px}
  .nav{display:none;position:absolute;top:70px;left:0;width:100%;background:#1144a3;flex-direction:column;height:auto;padding:10px 0}
  .nav>li{width:100%;height:50px;border-left:none;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav>li:last-child{border-right:none}
  .nav>li>a{height:50px;font-size:15px}
  .dropdown{position:static;box-shadow:none;padding:0}
  .dropdown a{text-align:left;padding:8px 30px}
  .nav.open{display:flex}
  .mobile-menu-btn{display:flex}
  .banner{height:350px}
  .banner .slide .overlay h2{font-size:28px}
  .banner .slide .overlay p{font-size:14px}
  .section-title h2{font-size:26px}
  .product-tabs{flex-wrap:wrap}
  .product-tabs .tab-btn{width:140px}
  .product-grid .product-card{width:calc(50% - 10px)}
  .apply-card{width:100%;height:300px}
  .store-list{flex-direction:column;align-items:center}
  .store-item{width:90%}
  .about-links{flex-wrap:wrap}
  .about-links .link-card{width:calc(50% - 10px)}
  .culture-cards{flex-direction:column}
  .team-list{flex-direction:column;align-items:center}
  .team-member{width:90%}
  .list-grid .product-card{width:100%}
  .list-grid .news-card{flex-direction:column;width:100%}
  .list-grid .news-card .news-img{width:100%;height:200px}
  .contact-info{flex-direction:column}
  .form-row{flex-direction:column}
  .page-banner{height:250px}
  .page-banner .overlay h1{font-size:28px}
  .related-grid{flex-direction:column}
  .related-grid .product-card{width:100%}
  .footer-content{flex-direction:column}
  .footer-col{width:100%}
  .footer-bottom{flex-direction:column;height:auto;padding:15px;gap:10px;text-align:center}
  .news-main{flex-direction:column}
  .news-featured{width:100%;height:300px}
  .news-featured img{height:300px}
  .news-top{flex-direction:column}
  .quick-options{flex-direction:column;gap:15px}
  .quick-options .opt-item{border-right:none;border-bottom:1px dotted #c7c7c7;padding:10px 0}
}
@media(max-width:480px){
  .banner{height:250px}
  .banner .slide .overlay h2{font-size:22px}
  .product-grid .product-card{width:100%}
}