/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;background:#F5F7FA;color:#1A1A2E;line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
button{border:none;background:none;cursor:pointer;font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.text-blue{color:#1565C0}
.text-center{text-align:center}
.mt-12{margin-top:48px}

/* ========== 按钮 ========== */
.btn-primary{display:inline-block;padding:10px 28px;background:#1565C0;color:#fff;font-weight:500;transition:all .3s;border:none}
.btn-primary:hover{background:#0D47A1;box-shadow:0 4px 16px rgba(21,101,192,.3)}
.btn-outline{display:inline-block;padding:10px 28px;border:2px solid #1565C0;color:#1565C0;font-weight:500;transition:all .3s;background:transparent}
.btn-outline:hover{background:#1565C0;color:#fff}
.btn-white{display:inline-block;padding:10px 28px;background:#fff;color:#1565C0;font-weight:500;transition:all .3s}
.btn-white:hover{background:rgba(255,255,255,.9)}

/* ========== 板块通用 ========== */
.section-light{background:#F5F7FA;padding:60px 0}
.section-white{background:#fff;padding:60px 0}
.section-blue{background:linear-gradient(135deg,#1565C0 0%,#0D47A1 100%);padding:60px 0}
.section-header{text-align:center;margin-bottom:40px}
.section-label{color:#1565C0;font-size:13px;letter-spacing:3px;text-transform:uppercase;margin-bottom:6px;font-weight:500}
.section-title{font-size:32px;font-weight:700;margin-bottom:8px}
.section-title-small{font-size:24px;font-weight:700;text-align:center;margin-bottom:24px}
.section-sub{color:#666;font-size:16px;max-width:600px;margin:0 auto}

/* ========== 顶部欢迎栏 ========== */
.top-bar{background:#0D47A1;color:rgba(255,255,255,.7);font-size:12px;border-bottom:1px solid rgba(255,255,255,.1)}
.top-bar-inner{display:flex;justify-content:space-between;align-items:center;padding:6px 16px}
.top-bar-right{display:flex;align-items:center;gap:16px}
.top-bar-right a{color:#fff;display:flex;align-items:center;gap:4px}
.top-bar-right a:hover{color:rgba(255,255,255,.8)}
.top-bar-right svg{width:12px;height:12px}
@media(max-width:640px){.top-bar-right{display:none}}
@media(max-width:1024px){.top-bar{display:none}}

/* ========== 导航栏 ========== */
.navbar{background:#1565C0;position:sticky;top:0;z-index:1000;transition:background .3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:40px;border-radius:4px}
.logo-title{color:#fff;font-weight:700;font-size:18px;line-height:1.2}
.logo-sub{color:rgba(255,255,255,.6);font-size:10px;letter-spacing:1px}
.nav-menu{display:flex;align-items:center;list-style:none}
.nav-menu > li{position:relative}
.nav-menu > li > a{display:block;padding:0 18px;height:64px;line-height:64px;color:rgba(255,255,255,.9);font-size:14px;transition:all .2s;white-space:nowrap}
.nav-menu > li > a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-menu .arrow{font-size:10px;margin-left:2px;display:inline-block;transition:transform .2s}
.nav-menu > li:hover .arrow{transform:rotate(90deg)}

/* 普通下拉 */
.dropdown{position:absolute;top:100%;left:0;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.15);border-top:2px solid #1565C0;min-width:180px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s;z-index:100}
.has-dropdown:hover > .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 20px;font-size:14px;color:#555;transition:all .2s;white-space:nowrap}
.dropdown a:hover{color:#1565C0;background:#f8f9fa}

/* 产品中心三级下拉 */
.mega-dropdown{position:absolute;top:100%;left:0;background:#fff;box-shadow:0 12px 40px rgba(0,0,0,.18);border-top:2px solid #1565C0;display:flex;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;z-index:100;min-width:220px;width:auto}.mega-dropdown::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px;background:transparent;visibility:visible}.mega-dropdown.show{opacity:1;visibility:visible}
/* 顶层产品中心 li hover 或 mega-dropdown 自己 hover 都保持显示，鼠标可移入三级分类 */
/* 关键：顶级 li hover 或 mega 自己 hover 都保持显示；mega 顶部向上伸 10px 覆盖 li 底边死区 */
.has-dropdown:hover > .mega-dropdown,
.mega-dropdown:hover{opacity:1;visibility:visible}.mega-left{width:220px;flex-shrink:0;padding:8px 0;border-right:1px solid #f0f0f0;background:#fff}
.cat-item{display:flex;justify-content:space-between;align-items:center;padding:9px 20px;font-size:13px;color:#444;transition:all .2s;white-space:nowrap}
.cat-item .arr{font-size:10px;color:#999;transition:color .2s}
.cat-item:hover,.cat-item.active{color:#1565C0;background:#f0f7ff;font-weight:500}
.cat-item:hover .arr{color:#1565C0}
/* 默认：mega-right 隐藏，panel 隐藏 */
.mega-right{flex:1;padding:16px 20px;background:#f8fafc;min-width:240px;position:relative;display:none}
.mega-right-panel{display:none}

/* 没三级 panel 的顶级栏目（关于我们等）：mega-right 永远不显示 */
.mega-dropdown.no-panel .mega-right{display:none !important}

/* JS 加 .show 类后：mega-right + 对应 panel 显示 */
.mega-dropdown.show .mega-right{display:block}
.mega-dropdown.show .mega-right-panel.active{display:block}

/* cat-item 高亮 */
.cat-item.active{color:#1565C0;background:#f0f7ff;font-weight:500}
.mega-right-title{color:#1565C0;font-weight:700;font-size:14px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid rgba(21,101,192,.2)}
.mega-right-list a{display:block;padding:5px 0;font-size:13px;color:#666;transition:color .2s}
.mega-right-list a:hover{color:#1565C0}

/* 移动端菜单按钮 */
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:8px;background:none;border:none;cursor:pointer}
.mobile-toggle span{display:block;width:24px;height:2px;background:#fff;transition:all .3s}

/* 移动端菜单 */
.mobile-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:1001;padding:100px 24px 40px;overflow-y:auto}
.mobile-menu.open{display:block}
.mobile-menu > a,.mobile-item > button{display:block;width:100%;padding:14px 0;font-size:16px;color:#333;border-bottom:1px solid #f0f0f0;text-align:left;background:none;cursor:pointer}
.mobile-item > button{display:flex;justify-content:space-between;align-items:center}
.mobile-item > button span{transition:transform .2s}
.mobile-item.open > button span{transform:rotate(90deg)}
.mobile-submenu{display:none;padding:8px 0 8px 16px;background:#f8f9fa}
.mobile-item.open > .mobile-submenu{display:block}
.mobile-submenu a{display:block;padding:8px 0;font-size:14px;color:#666;border-bottom:none}
.mobile-submenu a:hover{color:#1565C0}
.mobile-phone{display:block;text-align:center;padding:14px;background:#1565C0;color:#fff !important;border-radius:4px;margin-top:16px;font-weight:500}
.mobile-submenu-cat{padding:6px 0 6px 12px}
.mobile-submenu-cat .l2{font-weight:600;color:#1565C0;font-size:13px;padding:6px 0;display:block}
.mobile-submenu-cat .l3{padding:4px 0 4px 12px;font-size:13px;color:#777;display:block}

/* 关闭按钮 */
.mobile-menu-close{position:absolute;top:16px;right:16px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:24px;color:#333;background:none;border:none;cursor:pointer}

/* ========== Hero Banner ========== */
.hero{position:relative;height:500px;overflow:hidden}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .8s;z-index:1}
.hero-slide.active{opacity:1;z-index:2}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,71,161,.78) 0%,rgba(21,101,192,.5) 50%,transparent 100%)}
.hero-content{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;justify-content:center;padding-top:40px}
.hero-label{color:rgba(255,255,255,.7);font-size:13px;letter-spacing:3px;text-transform:uppercase;margin-bottom:10px}
.hero h1{color:#fff;font-size:40px;font-weight:700;margin-bottom:4px;line-height:1.2}
.hero h2{color:rgba(255,255,255,.92);font-size:22px;font-weight:600;margin-bottom:16px}
.hero-desc{color:rgba(255,255,255,.78);font-size:15px;max-width:520px;line-height:1.7;margin-bottom:24px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-prev,.hero-next{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:40px;height:40px;background:rgba(255,255,255,.2);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.3);color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s}
.hero-prev:hover,.hero-next:hover{background:rgba(255,255,255,.35)}
.hero-prev{left:16px}
.hero-next{right:16px}
.hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);z-index:4;display:flex;gap:8px}
.dot{width:8px;height:8px;border-radius:10px;background:rgba(255,255,255,.4);cursor:pointer;transition:all .3s}
.dot.active{background:#fff;width:24px}

/* ========== 产品中心 ========== */
.products-layout{display:flex;gap:24px}
.products-sidebar{width:240px;flex-shrink:0}
.sidebar-header{background:#1565C0;color:#fff;padding:14px 18px}
.sidebar-title{font-weight:700;font-size:16px}
.sidebar-sub{font-size:12px;opacity:.7;margin-left:4px}
.sidebar-list{background:#fff;border:1px solid #e8e8e8;border-top:none}
.sidebar-list li{border-bottom:1px solid #f5f5f5}
.sidebar-list li:last-child{border-bottom:none}
.sidebar-list a{display:block;padding:11px 18px;font-size:13px;color:#555;transition:all .2s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-list li:hover a,.sidebar-list li.active a{color:#1565C0;background:#f0f7ff;font-weight:500}
.products-grid-wrap{flex:1;position:relative}
.products-grid{flex:1;display:none;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;align-content:start}
.products-grid.active{display:grid}
.products-grid.active{display:grid}
.products-grid.empty{display:none;color:#999;font-size:14px}
.product-card{display:flex;flex-direction:column;background:#fff;border:1px solid #e8e8e8;overflow:hidden;transition:box-shadow .3s;text-decoration:none;color:inherit;cursor:pointer}
.product-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.product-img-wrap{position:relative;aspect-ratio:1/1;overflow:hidden;background:#f8f9fa}
.product-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product-card:hover .product-img-wrap img{transform:scale(1.05)}
.product-tag{position:absolute;top:10px;left:10px;padding:3px 10px;background:#1565C0;color:#fff;font-size:11px}
.product-info{padding:14px}
.product-info h3{font-size:15px;font-weight:600;margin-bottom:4px;color:#1A1A2E}
.product-info p{font-size:13px;color:#888;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{font-size:13px;color:#1565C0;font-weight:500}
.read-more:hover{text-decoration:underline}

/* ========== 关于长弘 ========== */
.about-top{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:40px}
.about-img{position:relative}
.about-img img{width:100%;height:340px;object-fit:cover;border-radius:4px;box-shadow:0 4px 20px rgba(0,0,0,.1)}
.about-year{position:absolute;bottom:-16px;right:-16px;background:#1565C0;color:#fff;padding:16px 24px;text-align:center;font-size:32px;font-weight:700;line-height:1}
.about-year span{font-size:13px;font-weight:400;opacity:.8}
.about-text h3{font-size:24px;font-weight:700;margin-bottom:8px;color:#1A1A2E}
.about-divider{width:48px;height:3px;background:#1565C0;margin-bottom:16px}
.about-text p{font-size:14px;color:#666;line-height:1.8;margin-bottom:10px}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
.stat-item{text-align:center;padding:14px 8px;background:#F5F7FA;border-radius:4px}
.stat-num{font-size:22px;font-weight:700;color:#1565C0}
.stat-label{font-size:12px;color:#999;margin-top:2px}

.factory-banner{position:relative;border-radius:4px;overflow:hidden;margin-top:20px}
.factory-banner img{width:100%;height:220px;object-fit:cover}
.factory-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,71,161,.8),transparent);display:flex;flex-direction:column;justify-content:center;padding:0 40px}
.factory-overlay h3{color:#fff;font-size:22px;font-weight:700;margin-bottom:6px}
.factory-overlay p{color:rgba(255,255,255,.8);font-size:14px;max-width:400px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feature-card{text-align:center;padding:24px 16px;background:#F5F7FA;border-radius:4px;transition:all .3s;cursor:default}
.feature-card:hover{background:#1565C0}
.feature-card:hover h4,.feature-card:hover p{color:#fff}
.feature-card:hover .feature-icon{background:rgba(255,255,255,.2);color:#fff}
.feature-icon{width:48px;height:48px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;background:rgba(21,101,192,.1);color:#1565C0;border-radius:50%;font-size:22px;transition:all .3s}
.feature-card h4{font-size:16px;font-weight:600;margin-bottom:6px;color:#1A1A2E;transition:color .3s}
.feature-card p{font-size:13px;color:#888;transition:color .3s}

/* ========== 合作客户 ========== */
.partners-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:10px;margin-bottom:32px}
.partner-item{aspect-ratio:3/2;background:#fff;border:1px solid #e8e8e8;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:#bbb;transition:all .3s;cursor:default;border-radius:2px}
.partner-item:hover{border-color:#1565C0;color:#1565C0;box-shadow:0 4px 12px rgba(21,101,192,.1)}
.partners-cta{background:linear-gradient(135deg,#1565C0 0%,#0D47A1 100%);border-radius:6px;padding:28px 36px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.partners-cta h3{color:#fff;font-size:20px;font-weight:700;margin-bottom:4px}
.partners-cta p{color:rgba(255,255,255,.8);font-size:14px}

/* ========== 应用领域 ========== */
.app-list{display:flex;flex-direction:column;gap:32px}
.app-row{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.app-row.reverse{direction:rtl}
.app-row.reverse > *{direction:ltr}
.app-img{border-radius:6px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08)}
.app-img img{width:100%;height:260px;object-fit:cover;transition:transform .5s}
.app-img:hover img{transform:scale(1.03)}
.app-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.app-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:rgba(21,101,192,.1);color:#1565C0;border-radius:8px;font-size:22px}
.app-header h3{font-size:20px;font-weight:700;color:#1A1A2E}
.app-sub{font-size:13px;color:#999}
.app-desc{font-size:14px;color:#666;line-height:1.8;margin-bottom:14px}
.app-features{display:flex;flex-wrap:wrap;gap:10px}
.app-features span{display:inline-flex;align-items:center;gap:4px;padding:5px 14px;background:#f0f7ff;color:#1565C0;font-size:13px;border-radius:2px}

/* ========== 服务流程 ========== */
.process-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;position:relative}
.process-step{text-align:center;position:relative}
.process-num{position:absolute;top:-8px;right:calc(50% - 28px);width:24px;height:24px;background:#fff;color:#1565C0;font-size:11px;font-weight:700;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.1);z-index:2}
.process-icon{width:56px;height:56px;margin:0 auto 10px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:50%;font-size:24px}
.process-step h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:4px}
.process-step p{color:rgba(255,255,255,.65);font-size:13px}

/* ========== 资讯中心 ========== */
.news-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;align-items:start}
.news-featured{background:#fff;border:1px solid #e8e8e8;border-radius:6px;overflow:hidden;transition:box-shadow .3s}
.news-featured:hover{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.news-featured-img{position:relative;overflow:hidden;aspect-ratio:16/9}
.news-featured-bg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:1}
.news-featured-bg img{width:100%;height:100%;object-fit:cover}
/*.news-featured-bg::before{content:"\\2197";font-size:80px;color:#fff}*/
.news-tag{position:absolute;top:12px;left:12px;padding:4px 12px;background:#fff;color:#1565C0;font-size:12px;font-weight:700;border-radius:2px}
.news-featured-body{padding:20px}
.news-meta{color:#999;font-size:13px;margin-bottom:8px}
.news-featured-body h3{font-size:18px;font-weight:700;color:#1A1A2E;margin-bottom:8px;line-height:1.4}
.news-featured-body p{color:#888;font-size:14px;line-height:1.6;margin-bottom:12px}
.news-list{display:flex;flex-direction:column;gap:8px}
.news-item{display:flex;gap:14px;padding:16px;background:#fff;border:1px solid #e8e8e8;border-radius:6px;transition:box-shadow .3s}
.news-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.06)}
.news-item-icon{width:48px;height:48px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:rgba(21,101,192,.08);color:#1565C0;border-radius:8px;font-size:22px}
.news-item-body{flex:1;min-width:0}
.news-item-meta{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.news-tag-small{padding:2px 8px;background:rgba(21,101,192,.1);color:#1565C0;font-size:11px;font-weight:500;border-radius:2px}
.news-date{color:#999;font-size:12px}
.news-item-body h4{font-size:15px;font-weight:600;color:#1A1A2E;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-item-body p{color:#888;font-size:13px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ========== Footer ========== */
.footer{background:#0c1923;color:#fff;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.2fr .9fr .8fr .9fr;gap:30px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo-img{height:44px;border-radius:4px}
.footer-logo-title{font-weight:700;font-size:16px}
.footer-logo-sub{font-size:10px;color:rgba(255,255,255,.5);letter-spacing:1px}
.footer-desc{color:rgba(255,255,255,.55);font-size:13px;line-height:1.7;margin-bottom:14px}
.footer-contact > div{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.65);font-size:13px;margin-bottom:6px}
.footer-icon{color:#42A5F5;font-size:14px}
.footer-contact a{color:rgba(255,255,255,.65)}
.footer-contact a:hover{color:#42A5F5}
.footer-title{font-size:16px;font-weight:700;margin-bottom:14px;padding-left:10px;border-left:3px solid #1565C0}
.footer-links li{margin-bottom:6px}
.footer-links a{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.5);font-size:13px;transition:color .2s}
.footer-links a::before{content:"";width:4px;height:4px;background:#1565C0;border-radius:50%}
.footer-links a:hover{color:#42A5F5}
.footer-cta{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:6px;padding:18px}
.footer-phone-label{color:rgba(255,255,255,.5);font-size:11px;margin-bottom:2px}
.footer-phone-num{font-size:24px;font-weight:700;color:#42A5F5;display:block;margin-bottom:2px}
.footer-contact-person{color:rgba(255,255,255,.5);font-size:12px;margin-bottom:12px}
.footer-call-btn{display:block;text-align:center;padding:10px;background:#1565C0;color:#fff;font-weight:500;border-radius:4px;transition:background .3s}
.footer-call-btn:hover{background:#1E88E5}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:36px;padding:16px 0}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.footer-bottom p{color:rgba(255,255,255,.4);font-size:12px}

/* ========== 浮动按钮 ========== */
/* PC 端默认隐藏（4 按钮只显示在移动端） */
.float-btns{display:none}
.float-btn{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 4px 12px rgba(0,0,0,.2);transition:all .3s}
.float-btn.phone{background:#1565C0;color:#fff}
.float-btn.phone:hover{background:#0D47A1;transform:scale(1.1)}
.float-btn.top{background:#fff;color:#1565C0;opacity:0;visibility:hidden;transform:translateY(10px)}
.float-btn.top.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-btn.top:hover{background:#f0f0f0;transform:scale(1.1)}

/* ========== 滚动显示动画 ========== */
.reveal{opacity:0;transform:translateY(30px);transition:all .6s ease-out}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ========== 响应式 ========== */
@media(max-width:1024px){
  /* .nav-menu{display:none}  ← 废弃，移动端横排网格 */
  .mobile-toggle{display:flex}
  .products-layout{flex-direction:column}
  .products-sidebar{width:100%}
  .sidebar-list{display:grid;grid-template-columns:repeat(2,1fr)}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .about-top{grid-template-columns:1fr}
  .about-year{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .partners-grid{grid-template-columns:repeat(4,1fr)}
  .process-grid{grid-template-columns:repeat(3,1fr);gap:24px}
  .app-row,.app-row.reverse{grid-template-columns:1fr;direction:ltr}
  .news-layout{grid-template-columns:1fr}
}
@media(max-width:768px){
  .hero{height:420px}
  .hero h1{font-size:28px}
  .hero h2{font-size:18px}
  .hero-desc{font-size:14px}
  .section-title{font-size:26px}
  .section-light,.section-white,.section-blue{padding:40px 0}
  .products-grid{grid-template-columns:1fr}
  .sidebar-list{grid-template-columns:1fr}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .partners-grid{grid-template-columns:repeat(3,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .about-stats{grid-template-columns:repeat(2,1fr)}
  .mega-dropdown{display:none !important}
}
@media(min-width:1025px){
  .mobile-menu{display:none !important}
}

/* ========== 子页面通用 ========== */
.inner-banner{height:260px;background:linear-gradient(135deg,#0D47A1 0%,#1565C0 50%,#42A5F5 100%);display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;position:relative;overflow:hidden}
.inner-banner::before{content:"";position:absolute;inset:0;background:url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 100 100\"><circle cx=\"20\" cy=\"20\" r=\"1\" fill=\"rgba(255,255,255,.1)\"/><circle cx=\"80\" cy=\"40\" r=\"1.5\" fill=\"rgba(255,255,255,.08)\"/><circle cx=\"40\" cy=\"80\" r=\"1\" fill=\"rgba(255,255,255,.1)\"/><circle cx=\"60\" cy=\"60\" r=\"2\" fill=\"rgba(255,255,255,.05)\"/></svg>');background-size:200px}
.inner-banner h1{font-size:36px;font-weight:700;margin-bottom:8px}
.inner-banner p{font-size:15px;opacity:.8;letter-spacing:2px;text-transform:uppercase}
.breadcrumb{background:#fff;border-bottom:1px solid #e8e8e8;padding:12px 0;font-size:13px;color:#888}
.breadcrumb a{color:#555}
.breadcrumb a:hover{color:#1565C0}
.breadcrumb span{color:#999;margin:0 6px}
.page-layout{display:flex;gap:24px;padding:40px 0}
.page-sidebar{width:260px;flex-shrink:0}
.page-main{flex:1;min-width:0}
.sidebar-title2{background:#1565C0;color:#fff;padding:14px 20px;font-size:16px;font-weight:700}
.sidebar-nav2{background:#fff;border:1px solid #e8e8e8;border-top:none}
.sidebar-nav2 li{border-bottom:1px solid #f0f0f0}
.sidebar-nav2 li:last-child{border-bottom:none}
.sidebar-nav2 li.has-children>a{display:flex;justify-content:space-between;align-items:center}
.sidebar-nav2 li.has-children>a.toggle-children{cursor:pointer}
.sidebar-nav2 li.has-children>a.toggle-children:hover{color:#1565C0;background:#f0f7ff}
.sidebar-nav2 .nav-arrow{font-size:12px;color:#999;transition:transform .2s}
.sidebar-nav2 li.has-children.open>a .nav-arrow{transform:rotate(90deg);color:#1565C0}
.sidebar-nav2 li.has-children>a.active{color:#1565C0;background:#f0f7ff;font-weight:500}
.sidebar-nav2 li.has-children>a.active .nav-arrow{color:#1565C0}
.sidebar-nav3{display:none;background:#f8fafc;border-top:1px solid #f0f0f0}
.sidebar-nav3 li{border-bottom:1px solid #f0f0f0}
.sidebar-nav3 li:last-child{border-bottom:none}
.sidebar-nav3 a{display:block;padding:10px 20px 10px 36px;font-size:13px;color:#666;transition:all .2s}
.sidebar-nav3 a:hover,.sidebar-nav3 a.active{color:#1565C0;background:#fff;font-weight:500}
.sidebar-nav2 li.has-children.open .sidebar-nav3{display:block}
.sidebar-nav2 a{display:block;padding:12px 20px;font-size:14px;color:#555;transition:all .2s}
.sidebar-nav2 a:hover,.sidebar-nav2 a.active{color:#1565C0;background:#f0f7ff;font-weight:500}
.page-content{background:#fff;border:1px solid #e8e8e8;padding:30px}

/* ========== 分页 ========== */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:30px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border:1px solid #e0e0e0;color:#666;font-size:14px;transition:all .2s;background:#fff}
.pagination a:hover,.pagination a.active,.pagination a.page-num-current{background:#1565C0;color:#fff;border-color:#1565C0}

/* ========== 产品列表页 ========== */
.plist-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.plist-card{background:#fff;border:1px solid #e8e8e8;overflow:hidden;transition:box-shadow .3s}
.plist-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)}
.plist-img{aspect-ratio:4/3;overflow:hidden;background:#f5f5f5}
.plist-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.plist-card:hover .plist-img img{transform:scale(1.05)}
.plist-info{padding:16px;text-align:center}
.plist-info h3{font-size:15px;font-weight:600;margin-bottom:6px;color:#1A1A2E}
.plist-info p{font-size:13px;color:#888;margin-bottom:10px}

/* ========== 产品详情页 ========== */
.pdetail-layout{display:flex;gap:30px}
.pdetail-gallery{width:420px;flex-shrink:0;position:relative;z-index:10}
.pdetail-main{flex:1}
.pdetail-big{aspect-ratio:1/1;background:#f8f9fa;border:1px solid #e8e8e8;overflow:hidden;position:relative;margin-bottom:12px;cursor:crosshair}
.pdetail-big img{width:100%;height:100%;object-fit:cover}
.pdetail-thumbs{display:flex;gap:8px}
.pdetail-thumb{width:72px;height:72px;border:2px solid transparent;cursor:pointer;overflow:hidden;background:#f5f5f5;transition:border-color .2s}
.pdetail-thumb.active{border-color:#1565C0}
.pdetail-thumb img{width:100%;height:100%;object-fit:cover}
.pdetail-title{font-size:24px;font-weight:700;margin-bottom:16px;color:#1A1A2E}
.pdetail-desc{color:#666;line-height:1.8;margin-bottom:20px;font-size:14px}
.pdetail-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.pdetail-meta span{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;background:#f0f7ff;color:#1565C0;font-size:13px;border-radius:2px}
.pdetail-contact{padding:20px;background:#f8f9fa;border-left:3px solid #1565C0;margin-top:20px}
.pdetail-contact h4{font-size:16px;margin-bottom:10px}
.pdetail-contact p{font-size:14px;color:#666;margin-bottom:6px}
.pdetail-section{margin-top:30px;padding-top:30px;border-top:1px solid #e8e8e8}
.pdetail-section h3{font-size:18px;font-weight:700;margin-bottom:16px;padding-left:12px;border-left:3px solid #1565C0}
.pdetail-section p{color:#666;line-height:1.8;font-size:14px;margin-bottom:10px}
/* 放大镜 */
.zoom-lens{position:absolute;width:120px;height:120px;background:rgba(21,101,192,.15);border:1px solid rgba(21,101,192,.3);pointer-events:none;display:none;z-index:10}
.zoom-result{position:fixed;width:400px;height:400px;border:1px solid #e0e0e0;overflow:hidden;display:none;z-index:99999;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.2);pointer-events:none}
.zoom-result img{position:absolute;max-width:none;width:auto;height:auto}

/* ========== 视频列表 ========== */
.vlist-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.vlist-card{background:#fff;border:1px solid #e8e8e8;overflow:hidden;transition:box-shadow .3s;cursor:pointer}
.vlist-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)}
.vlist-img{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1a1a2e}
.vlist-img img{width:100%;height:100%;object-fit:cover}
.vlist-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3);transition:background .3s}
.vlist-card:hover .vlist-play{background:rgba(0,0,0,.15)}
.vlist-play::before{content:"";width:56px;height:56px;background:rgba(255,255,255,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(0,0,0,.3)}
.vlist-play::after{content:"";width:0;height:0;border-left:16px solid #1565C0;border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:6px;position:absolute}
.vlist-info{padding:14px 16px}
.vlist-info h3{font-size:15px;font-weight:600;margin-bottom:6px}
.vlist-info p{font-size:13px;color:#999}

/* ========== 设备列表 ========== */
.eqlist-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.eqlist-card{background:#fff;border:1px solid #e8e8e8;overflow:hidden;transition:box-shadow .3s;cursor:pointer}
.eqlist-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)}
.eqlist-img{aspect-ratio:4/3;overflow:hidden;background:#f5f5f5}
.eqlist-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.eqlist-card:hover .eqlist-img img{transform:scale(1.05)}
.eqlist-info{padding:16px;text-align:center}
.eqlist-info h3{font-size:15px;font-weight:600;color:#1A1A2E}
.eqlist-info p{font-size:13px;color:#888}
/* 灯箱 */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:9999;display:none;align-items:center;justify-content:center}
.lightbox.active{display:flex}
.lightbox img{max-width:90%;max-height:90%;object-fit:contain}
.lightbox-close{position:absolute;top:20px;right:30px;font-size:40px;color:#fff;cursor:pointer}

/* ========== 新闻列表 ========== */
.nlist{display:flex;flex-direction:column;gap:16px}
.nlist-item{display:flex;gap:20px;padding:20px;background:#fff;border:1px solid #e8e8e8;transition:box-shadow .3s}
.nlist-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.06)}
.nlist-img{width:200px;height:140px;flex-shrink:0;overflow:hidden;background:#f5f5f5}
.nlist-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.nlist-item:hover .nlist-img img{transform:scale(1.05)}
.nlist-body{flex:1;min-width:0}
.nlist-meta{display:flex;gap:12px;margin-bottom:8px;font-size:13px;color:#999;flex-wrap:wrap}
.nlist-tag{padding:2px 10px;background:rgba(21,101,192,.1);color:#1565C0;font-size:12px;font-weight:500}
.nlist-body h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#1A1A2E}
.nlist-body p{font-size:14px;color:#888;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nlist-simple{padding:16px 20px;background:#fff;border:1px solid #e8e8e8;display:flex;justify-content:space-between;align-items:center;transition:box-shadow .3s}
.nlist-simple:hover{box-shadow:0 4px 12px rgba(0,0,0,.06)}
.nlist-simple h4{font-size:15px;font-weight:500;color:#333}
.nlist-simple .date{font-size:13px;color:#999}

/* ========== 新闻详情 ========== */
.ndetail-header{text-align:center;margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid #e8e8e8}
.ndetail-header h1{font-size:26px;font-weight:700;margin-bottom:12px;color:#1A1A2E}
.ndetail-meta{display:flex;justify-content:center;gap:20px;font-size:13px;color:#999}
.ndetail-content{font-size:15px;line-height:1.9;color:#444}
.ndetail-content p{margin-bottom:16px}
.ndetail-content img{max-width:100%;margin:16px auto;border-radius:4px}
.ndetail-nav{display:flex;justify-content:space-between;gap:20px;margin-top:30px;padding-top:20px;border-top:1px solid #e8e8e8;font-size:14px}
.ndetail-nav>div{flex:1 1 0;min-width:0;display:flex;align-items:center;gap:6px}
.ndetail-nav>div:nth-child(2){justify-content:flex-end}
.ndetail-nav>div:nth-child(2)>span{order:2}
.ndetail-nav>div:nth-child(2)>a{order:1}
.ndetail-nav a{color:#1565C0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block}
.ndetail-nav a:hover{text-decoration:underline}
@media (max-width:768px){.ndetail-nav{flex-direction:column;gap:12px}.ndetail-nav>div:nth-child(2){justify-content:flex-start}.ndetail-nav>div:nth-child(2)>span{order:0}.ndetail-nav>div:nth-child(2)>a{order:0}}

/* ========== 视频中心 ========== */
.vc-search{display:flex;gap:12px;margin-bottom:24px;padding:20px;background:#fff;border:1px solid #e8e8e8}
.vc-search input{flex:1;padding:10px 16px;border:1px solid #ddd;font-size:14px;transition:border-color .2s}
.vc-search input:focus{outline:none;border-color:#1565C0}
.vc-search button{padding:10px 24px;background:#1565C0;color:#fff;font-size:14px;transition:background .3s}
.vc-search button:hover{background:#0D47A1}
.vc-cats{display:flex;gap:8px;margin-bottom:24px;flex-wrap:wrap}
.vc-cats a{padding:8px 20px;background:#fff;border:1px solid #e0e0e0;color:#555;font-size:14px;transition:all .2s}
.vc-cats a:hover,.vc-cats a.active{background:#1565C0;color:#fff;border-color:#1565C0}

/* ========== 合作客户页 ========== */
.ptpage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ptpage-card{background:#fff;border:1px solid #e8e8e8;padding:24px 16px;text-align:center;transition:all .3s}
.ptpage-card:hover{border-color:#1565C0;box-shadow:0 4px 16px rgba(21,101,192,.1);transform:translateY(-2px)}
.ptpage-card .ptname{font-size:18px;font-weight:700;color:#bbb;margin-bottom:6px;transition:color .3s}
.ptpage-card:hover .ptname{color:#1565C0}
.ptpage-card .ptcat{font-size:13px;color:#999}

/* ========== 留言/联系方式 ========== */
.contact-layout{display:flex;gap:30px}
.contact-info{flex:1}
.contact-info-item{display:flex;gap:16px;margin-bottom:24px;padding:20px;background:#fff;border:1px solid #e8e8e8}
.contact-icon{width:48px;height:48px;background:rgba(21,101,192,.1);color:#1565C0;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.contact-item-body h4{font-size:16px;font-weight:600;margin-bottom:4px}
.contact-item-body p{font-size:14px;color:#666}
.contact-form{flex:1;background:#fff;border:1px solid #e8e8e8;padding:30px}
.contact-form h3{font-size:20px;font-weight:700;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid #1565C0}
.form-row{display:flex;gap:16px;margin-bottom:16px}
.form-group{flex:1}
.form-group label{display:block;font-size:14px;color:#555;margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:10px 14px;border:1px solid #ddd;font-size:14px;transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#1565C0}
.form-group textarea{resize:vertical;min-height:120px}
.form-group.full{width:100%}
.submit-btn{width:100%;padding:12px;background:#1565C0;color:#fff;font-size:16px;font-weight:500;transition:background .3s;border:none}
.submit-btn:hover{background:#0D47A1}
.map-placeholder{height:360px;background:linear-gradient(135deg,#e3f0ff,#f0f7ff);display:flex;align-items:center;justify-content:center;color:#1565C0;font-size:16px;border:1px solid #d0e3f7;margin-top:20px}

/* ========== 合作伙伴滚动 ========== */
.partner-scroll{position:relative;overflow:hidden;padding:20px 0}
.partner-track{display:flex;gap:30px;animation:scrollPartner 30s linear infinite;width:max-content}
@keyframes scrollPartner{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.partner-slide{flex-shrink:0;padding:16px 30px;background:#fff;border:1px solid #e8e8e8;font-size:16px;font-weight:700;color:#bbb}

/* ========== 资质证书 ========== */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cert-item{background:#fff;border:1px solid #e8e8e8;padding:16px;text-align:center;transition:box-shadow .3s}
.cert-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.cert-img{aspect-ratio:3/4;background:#f5f5f5;margin-bottom:10px;overflow:hidden;display:flex;align-items:center;justify-content:center;color:#ccc;font-size:14px}
.cert-item{cursor:pointer}
.cert-lightbox{position:fixed;inset:0;z-index:99999;display:none;align-items:center;justify-content:center}
.cert-lightbox.open{display:flex}
.cert-lightbox-mask{position:absolute;inset:0;background:rgba(0,0,0,.85)}
.cert-lightbox-inner{position:relative;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;align-items:center;z-index:1}
.cert-lightbox-img{max-width:90vw;max-height:80vh;object-fit:contain;background:#fff;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.cert-lightbox-caption{margin-top:14px;color:#fff;font-size:14px;display:flex;gap:18px;align-items:center;text-align:center}
.cert-lightbox-title{max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cert-lightbox-count{color:#9aa6b2;font-size:13px;background:rgba(255,255,255,.08);padding:2px 10px;border-radius:10px}
.cert-lightbox-close,.cert-lightbox-prev,.cert-lightbox-next{position:absolute;background:rgba(255,255,255,.1);border:0;color:#fff;font-size:36px;line-height:1;cursor:pointer;width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .2s;z-index:2}
.cert-lightbox-close:hover,.cert-lightbox-prev:hover,.cert-lightbox-next:hover{background:rgba(255,255,255,.25)}
.cert-lightbox-close{top:24px;right:24px;font-size:30px}
.cert-lightbox-prev{left:24px;top:50%;transform:translateY(-50%)}
.cert-lightbox-next{right:24px;top:50%;transform:translateY(-50%)}
@media (max-width:768px){.cert-lightbox-prev{left:8px;width:40px;height:40px;font-size:28px}.cert-lightbox-next{right:8px;width:40px;height:40px;font-size:28px}.cert-lightbox-close{top:12px;right:12px;width:40px;height:40px;font-size:24px}.cert-lightbox-title{max-width:70vw}}
.cert-item p{font-size:14px;color:#555}

/* ========== 弹窗视频 ========== */
.video-modal{position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:9999;display:none;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal-box{position:relative;width:90%;max-width:900px}
.video-modal-close{position:absolute;top:-40px;right:0;font-size:32px;color:#fff;cursor:pointer}
.video-modal iframe{width:100%;aspect-ratio:16/9;border:none}

/* ========== 响应式补充 ========== */
@media(max-width:1024px){
  /* 防止内容（图片/表格/长文）撑破移动布局 */
  img{height:auto;max-width:100%}
  table,pre,figure,picture,video,iframe{max-width:100%;height:auto}
  .container{width:100%;overflow-x:hidden}
  /* grid/flex item 默认 min-width:auto 会让项目被子内容撑大到超出容器 */
  .news-featured,.news-item,.pdetail-gallery,.plist-card,.product-card,.video-item,.eqlist-item,.cert-card,.pdetail-side,.gallery-main,.partner-item,.page-sidebar,.page-content,.news-layout,.vlist-grid,.plist-grid,.eqlist-grid,.ptpage-grid,.cert-grid,.brand-grid,.partner-grid,.news-grid{width:100%;min-width:0;max-width:100%}
  /* 关键：1fr 会按子内容最小宽撑大，minmax(0,1fr) 才能让 grid track 不被撑爆 */
  .news-layout,.plist-grid,.vlist-grid,.eqlist-grid,.ptpage-grid,.cert-grid,.brand-grid,.partner-grid,.products-grid,.features-grid,.process-grid,.partners-grid,.app-row,.about-top,.footer-grid,.sidebar-list,.products-layout,.page-layout,.contact-layout,.pdetail-layout,.news-grid{grid-template-columns:minmax(0,1fr) !important}
  .page-layout{flex-direction:column}
  .page-sidebar{width:100%}
  .sidebar-nav2{display:grid;grid-template-columns:repeat(2,1fr)}
  .plist-grid,.vlist-grid,.eqlist-grid,.ptpage-grid,.cert-grid{grid-template-columns:repeat(2,1fr)}
  .pdetail-layout{flex-direction:column}
  .pdetail-gallery{width:100%}
  .zoom-result{display:none !important}
  .contact-layout{flex-direction:column}
  .nlist-img{width:140px;height:100px}
  .inner-banner h1{font-size:28px}
}
@media(max-width:768px){
  .plist-grid,.vlist-grid,.eqlist-grid,.ptpage-grid,.cert-grid{grid-template-columns:1fr}
  .nlist-item{flex-direction:column}
  .nlist-img{width:100%;height:180px}
  .form-row{flex-direction:column;gap:0}
  .page-content{padding:20px}
  .sidebar-nav2{grid-template-columns:1fr}
  .vc-search{flex-direction:column}
}

/* ========== 移动端导航（横排在 Logo 下方） ========== */
@media(max-width:1024px){
  /* 整体导航块改垂直布局 */
  .navbar{position:sticky;top:0;z-index:1000}
  .nav-inner{flex-direction:column;align-items:stretch;height:auto;padding:8px 12px;gap:8px}
  .logo{flex-shrink:0}
  .logo-img{height:36px}
  .logo-title{font-size:16px}
  .logo-sub{font-size:9px}

  /* 横排导航网格：4 列 × 2 行（最后 1 个空格），十字线用每个 li 的 border 勾勒 */
  .nav-menu{display:grid !important;grid-template-columns:repeat(4,1fr);width:100%;list-style:none;margin:0;padding:0;background:transparent}
  .nav-menu > li{display:flex;background:transparent;border-right:1px solid rgba(255,255,255,.4);border-bottom:1px solid rgba(255,255,255,.4);box-sizing:border-box;min-height:30px}
  .nav-menu > li:nth-child(4n){border-right:none}
  .nav-menu > li:nth-child(n+5){border-bottom:none}
  .nav-menu > li > a{display:flex !important;align-items:center;justify-content:center;width:100%;height:100%;padding:6px 4px;line-height:1.2;color:#fff;font-size:13px;text-align:center;white-space:normal;background:transparent;box-sizing:border-box}
  .nav-menu > li > a:hover{background:rgba(255,255,255,.08);color:#fff}
  .nav-menu .arrow{display:none}
  /* 当前页 active：底部加一根白色下划线，不填充背景避免破坏十字线 */
  .nav-menu > li.active > a,
  .nav-menu a.on{color:#fff;font-weight:600;position:relative}
  .nav-menu > li.active > a::after,
  .nav-menu a.on::after{content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);width:20px;height:2px;background:#fff;border-radius:1px}

  /* 桌面端的下拉隐藏（移动端不展开，避免占空间） */
  .dropdown,.mega-dropdown{display:none !important}

  /* 隐藏 hamburger 和抽屉（不再用） */
  .mobile-toggle,.mobile-menu,.mobile-menu-close{display:none !important}
}

/* ========== 吸底 4 按钮栏 ========== */
@media(max-width:1024px){
  .float-btns{position:fixed;left:0;right:0;bottom:0;z-index:900;display:grid !important;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border-top:1px solid #e8e8e8;padding:6px 0 calc(6px + env(safe-area-inset-bottom));box-shadow:0 -2px 10px rgba(0,0,0,.06)}
  .float-btns a,.float-btns button{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:auto;min-height:46px;padding:4px 2px;background:transparent;color:#666;font-size:12px;border:none;border-radius:0;box-shadow:none;text-decoration:none;transition:color .2s;cursor:pointer;font-family:inherit}
  .float-btns a:hover,.float-btns button:hover{background:#f5f7fa}
  .float-btns a[href^="tel:"]{color:#1565C0;font-weight:600}
  /* 返回顶部：滚动前透明不可点感，滚动后正常 */
  .float-btn.top{opacity:1 !important;visibility:visible !important;transform:none !important;background:transparent}
  /* body 留出底部空间，避免内容被遮挡 */
  body{padding-bottom:60px}
}

/* 桌面端保留原浮动按钮（右下角圆形）样式不动 */
@media(min-width:1025px){
  body{padding-bottom:0}
}

/* ========== 备案号 ========== */
.footer-beian{color:rgba(255,255,255,.4);font-size:12px;margin-top:6px}
.footer-beian a{color:rgba(255,255,255,.4);display:inline-flex;align-items:center;gap:4px}
.footer-beian a:hover{color:#42A5F5}
.footer-beian .beian-icon{width:14px;height:14px;display:inline-block}
@media(max-width:768px){
  .footer-bottom .container{flex-direction:column;text-align:center;gap:6px}
}