/* ========== Layout: Header + Footer + Navigation (synced from reference) ========== */
/* 导航栏、页脚、返回顶部、搜索面板、语言切换、移动端菜单 */

/* ========== Navigation (Header) ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,0.97);backdrop-filter:blur(8px);
  height:64px;display:flex;align-items:center;
}
.header-inner{margin:0 auto;padding:var(--wrap-pad);width:100%;display:flex;align-items:center;justify-content:space-between}

/* Logo */
.logo{display:inline-flex;align-items:center;height:100%;text-decoration:none;flex-shrink:0}
.logo img{height:32px;width:auto;display:block}

/* Nav Links */
.nav{display:flex;align-items:center;gap:46px;margin:0 30px;height:100%}
.nav a{
  font-size:15px;color:#3A3F48;font-weight:400;position:relative;
  display:inline-flex;align-items:center;height:64px;padding:0 6px;
  transition:color .2s;text-decoration:none;
}
.nav a:hover{color:var(--color-primary)}
.nav a.on,.nav a.active{color:var(--color-primary);font-weight:700}
.nav a::after{
  content:'';position:absolute;bottom:10px;left:50%;width:0;height:3px;
  border-radius:2px;background:var(--color-primary);
  transition:width .3s cubic-bezier(.16,1,.3,1),left .3s cubic-bezier(.16,1,.3,1);
}
.nav a:hover::after,.nav a.active::after,.nav a.on::after{
  width:100%;left:0;
}

/* Header Right */
.header-right{display:flex;align-items:center;gap:16px;flex:none}
.search-icon{width:20px;height:20px;color:#666;cursor:pointer;transition:color .2s}
.search-icon:hover{color:var(--color-primary)}

/* ========== Content Wrap (shared container) ========== */
.wrap {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: var(--wrap-pad);
}

/* ========== Page Hero (sub-page header) ========== */
.page-hero{
  position:relative;background:linear-gradient(135deg,var(--navy) 0%,#0055B0 100%);
  min-height:360px;display:flex;align-items:center;
  padding:80px 0;overflow:hidden;
}
.page-hero .ph-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.15;
}
.page-hero .ph-mask{
  position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,60,120,.88) 0%,rgba(0,85,176,.78) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-100px;top:-100px;width:500px;height:500px;border-radius:50%;
  background:rgba(255,255,255,.05);pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;left:-60px;bottom:-80px;width:300px;height:300px;border-radius:50%;
  background:rgba(20,95,251,.15);pointer-events:none;
}
.page-hero .wrap{z-index:2}
.page-hero-en{font-size:14px;font-weight:600;letter-spacing:4px;color:rgba(255,255,255,.6);margin-bottom:12px;text-transform:uppercase}
.page-hero h1{font-size:40px;font-weight:800;color:#fff;letter-spacing:1px;line-height:1.3;margin:0}
.page-hero-sub{margin-top:16px;font-size:16px;color:rgba(255,255,255,.8);letter-spacing:.5px;max-width:560px}
.crumbs{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px}
.crumbs a{color:rgba(255,255,255,.62);transition:color .25s}
.crumbs a:hover{color:#fff}
.crumbs span{margin:0 8px}
.crumbs b{color:#fff;font-weight:700}

/* ========== Page Banner Component (产品概览风格) ========== */
.page-banner{
  background:#fff;
  padding:80px 0 60px;
}
.page-banner-inner{
  max-width:var(--wrap-max);
  margin:0 auto;
  padding:var(--wrap-pad);
  display:flex;
  gap:60px;
  align-items:center;
}
.page-banner-img{
  flex:0 0 52%;
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--color-gray-light);
  aspect-ratio:4/3;
  display:flex;
  align-items:center;
  justify-content:center;
}
.page-banner-img img{
  max-width:85%;
  max-height:85%;
  object-fit:contain;
  transition:transform .4s cubic-bezier(.16,1,.3,1);
}
.page-banner-img:hover img{transform:scale(1.05)}
.page-banner-info{flex:1}
.page-banner-label{
  font-family:var(--font-en);font-size:13px;font-weight:600;
  color:var(--color-primary);letter-spacing:2px;
  text-transform:uppercase;margin-bottom:8px;
}
.page-banner-info h1{
  font-family:var(--font-body);font-weight:var(--fw-title);
  font-size:34px;line-height:1.3;color:var(--ink);margin-bottom:16px;
}
.page-banner-desc{
  font-family:var(--font-body);font-weight:300;font-size:15px;
  line-height:1.8;color:var(--body);margin-bottom:28px;
}
.page-banner-actions{display:flex;gap:16px;align-items:center}
@media (max-width:980px){
  .page-banner-inner{flex-direction:column;gap:40px}
  .page-banner-img{flex:0 0 100%;width:100%}
  .page-banner-info h1{font-size:28px}
}

/* ========== Site Banner Component (复刻 showcase-hero 风格) ========== */
.site-banner{
  width:100%;min-height:480px;
  background:linear-gradient(135deg,#f0f4f8 0%,#e8edf3 100%);
  display:flex;align-items:center;
  margin-top:64px;position:relative;overflow:hidden;
}
.site-banner-inner{
  max-width:var(--wrap-max);margin:0 auto;padding:60px;
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:60px;
}
.site-banner-left{flex:1;max-width:480px}
.site-banner-left .banner-tag{
  display:inline-block;font-family:var(--font-en);font-size:12px;font-weight:600;
  color:var(--color-primary);text-transform:uppercase;letter-spacing:2px;margin-bottom:16px;
}
.site-banner-left h1{
  font-family:var(--font-body);font-weight:var(--fw-title);
  font-size:40px;line-height:1.2;color:var(--color-black);margin-bottom:16px;
}
.site-banner-left p{
  font-family:var(--font-body);font-weight:var(--fw-desc);
  font-size:15px;line-height:1.7;color:#666;margin-bottom:32px;
}
.site-banner-btns{display:flex;gap:16px;align-items:center}
.site-banner-right{flex:0 0 45%;display:flex;justify-content:center;align-items:center}
.site-banner-right img{max-width:100%;height:auto;object-fit:contain}
@media (max-width:980px){
  .site-banner{min-height:auto;padding:40px 0}
  .site-banner-inner{flex-direction:column;gap:40px;padding:40px}
  .site-banner-left{max-width:100%}
  .site-banner-left h1{font-size:30px}
  .site-banner-right{flex:0 0 100%;width:100%}
}

/* ========== Site Banner: 满幅轮播版（内页） ========== */
.site-banner.site-banner-carousel{
  background:#0d1b2a;
  height:640px;
  padding:0;
  display:block;
}
.site-banner-carousel .carousel{
  position:relative;
  inset:auto;
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
}
.site-banner-carousel .carousel-slide{
  position:absolute;
  inset:0;
  opacity:0;
  transition:opacity 1s cubic-bezier(0.16, 1, 0.3, 1);
  display:flex;
  align-items:center;
}
.site-banner-carousel .carousel-slide.active{
  opacity:1;
  z-index:1;
}
.site-banner-carousel .hero-bg{
  position:absolute;
  inset:0;
  background-color:#0d1b2a;
  background-position:center center;
  background-size:cover;
  background-repeat:no-repeat;
  transform:scale(1.05);
  transition:transform 6s ease-out;
}
.site-banner-carousel .carousel-slide.active .hero-bg{
  transform:scale(1);
}
.site-banner-carousel .hero-overlay{
  position:absolute;
  inset:0;
  z-index:1;
}
.site-banner-carousel .hero-content{
  position:relative;
  z-index:2;
  max-width:var(--wrap-max);
  margin:0 auto;
  padding:0 var(--wrap-pad-x);
  width:100%;
}
.site-banner-carousel .banner-tag{
  display:inline-block;
  color:rgba(255,255,255,0.85);
  font-family:var(--font-en);
  font-size:12px;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:3px;
  margin-bottom:18px;
}
.site-banner-carousel h1{
  color:#fff;
  font-size:42px;
  line-height:1.2;
  font-weight:var(--fw-title);
  margin-bottom:18px;
}
.site-banner-carousel h1 .accent-line{
  display:block;
  width:40px;
  height:4px;
  background:var(--color-primary);
  margin-bottom:18px;
}
.site-banner-carousel p{
  color:rgba(255,255,255,0.82);
  font-size:16px;
  line-height:1.7;
  max-width:640px;
  margin-bottom:0;
}
.site-banner-carousel .hero-overlay{
  background:linear-gradient(90deg, rgba(3,20,40,0.78) 0%, rgba(3,20,40,0.45) 50%, rgba(3,20,40,0.25) 100%);
}
/* 圆点指示器 */
.carousel-dots{
  position:absolute;
  left:50%;
  bottom:28px;
  transform:translateX(-50%);
  z-index:3;
  display:flex;
  align-items:center;
  gap:10px;
  margin:0;
  padding:0;
}
.carousel-dots button{
  width:10px;
  height:10px;
  border-radius:50%;
  background:rgba(255,255,255,0.4);
  border:none;
  cursor:pointer;
  padding:0;
  transition:all .3s ease;
}
.carousel-dots button:hover{ background:rgba(255,255,255,0.7); }
.carousel-dots button.active{
  background:#fff;
  width:28px;
  border-radius:6px;
}
@media (max-width:980px){
  .site-banner.site-banner-carousel{ height:420px; }
  .site-banner-carousel h1{ font-size:28px; }
  .site-banner-carousel p{ font-size:14px; }
  .carousel-dots{ bottom:18px; }
}
@media (max-width:480px){
  .site-banner.site-banner-carousel{ height:340px; }
  .site-banner-carousel h1{ font-size:24px; }
  .site-banner-carousel .banner-tag{ margin-bottom:12px; }
}
/* 产品中心品牌轮播：保持全屏（占满导航栏以下整个视口） */
.site-banner-carousel.site-banner-product{
  height:calc(100vh - 64px);
  height:calc(100dvh - 64px);
}
/* 焦点文字在通用基础上加大 6px（42→48 / 28→34 / 24→30） */
.site-banner-carousel.site-banner-product h1{ font-size:48px; }
@media (max-width:980px){
  .site-banner-carousel.site-banner-product{ height:calc(100dvh - 64px); }
  .site-banner-carousel.site-banner-product h1{ font-size:34px; }
}
@media (max-width:480px){
  .site-banner-carousel.site-banner-product{ height:calc(100dvh - 64px); }
  .site-banner-carousel.site-banner-product h1{ font-size:30px; }
}

/* ========== Footer ========== */
.footer{background:var(--footer);padding:0 0 0;color:rgba(255,255,255,.7)}
.footer-inner{margin:0 auto;padding:var(--wrap-pad)}

/* Footer top: logo + subscribe */
.footer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);gap:40px;padding-top:40px;}
.footer-logo{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.footer-logo img{height:80px;width:auto;display:block;filter:brightness(0) invert(1)}
.footer-subscribe{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer-subscribe-desc{font-size:12px;color:rgba(255,255,255,.45);line-height:1.7;text-align:left}
.footer-subscribe-row{display:flex;gap:8px}
.footer-subscribe-row input{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:4px;
  padding:10px 16px;color:#fff;font-size:13px;width:240px;outline:none;font-family:var(--font-body);
}
.footer-subscribe-row input::placeholder{color:rgba(255,255,255,.4)}
.footer-subscribe-row input:focus{border-color:var(--color-primary)}
.footer-subscribe-row button{
  width:80px;height:40px;background:var(--color-primary);border-radius:4px;
  display:flex;align-items:center;justify-content:center;color:#fff;border:none;cursor:pointer;
  transition:background .3s;
}
.footer-subscribe-row button:hover{background:#005bb5}
.footer-subscribe-row button:disabled{opacity:.6;cursor:not-allowed}
.footer-subscribe-privacy{display:flex;align-items:flex-start;gap:6px;font-size:11px;color:rgba(255,255,255,.4);line-height:1.5;cursor:pointer}
.footer-subscribe-privacy input{margin-top:2px;flex-shrink:0;accent-color:var(--color-primary)}
.footer-subscribe-privacy a{color:rgba(255,255,255,.6);text-decoration:underline}

/* Footer navigation columns */
.footer-nav{display:flex;justify-content:space-between;padding:40px 0;gap:40px;flex-wrap:wrap}
.footer-nav-col{min-width:60px}
.footer-nav-col h3{font-family:var(--font-body);font-weight:700;font-size:14px;color:#fff;margin-bottom:20px}
.footer-nav-col a{display:block;font-family:var(--font-body);font-weight:var(--fw-desc);font-size:13px;color:rgba(255,255,255,.5);margin-bottom:12px;transition:color .2s;text-decoration:none}
.footer-nav-col a:hover{color:rgba(255,255,255,.9)}
.footer-contact-info{font-size:13px;color:rgba(255,255,255,.5);line-height:2}
.footer-contact-info a{color:rgba(255,255,255,.7);display:inline}
.footer-qr-code{margin-top:16px;text-align:left}
.footer-qr-code img{width:100px;height:100px;border-radius:6px;display:block;margin:0}
.footer-qr-code span{display:block;font-size:11px;color:rgba(255,255,255,.4);margin-top:6px;text-align:left}

/* Footer bottom: legal + copyright */
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between}
.footer-bottom p{font-family:var(--font-body);font-size:12px;color:rgba(255,255,255,.35)}
.footer-bottom-links{display:flex;gap:24px}
.footer-bottom-links a{font-family:var(--font-body);font-size:12px;color:rgba(255,255,255,.35);transition:color .2s}
.footer-bottom-links a:hover{color:rgba(255,255,255,.7)}
.footer-bottom-copyright{font-size:12px;color:rgba(255,255,255,.35)}

/* Legacy footer classes (removed, kept for reference) */

/* ========== Search Panel ========== */
.search-panel{
  position:fixed;top:0;left:0;right:0;height:80px;
  background:rgba(255,255,255,.98);backdrop-filter:blur(12px);
  z-index:1001;display:flex;align-items:center;justify-content:center;
  transform:translateY(-100%);
  transition:transform .4s cubic-bezier(.16,1,.3,1);
  box-shadow:0 4px 20px rgba(0,0,0,.08);
}
.search-panel.open{transform:translateY(0)}
.search-panel input{
  width:60%;max-width:600px;padding:14px 20px;border:none;
  border-bottom:2px solid var(--color-primary);
  font-family:var(--font-body);font-size:16px;outline:none;background:transparent;
}
.search-close{
  position:absolute;right:60px;width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:#888;transition:color .2s;
}
.search-close:hover{color:var(--color-black)}

/* ========== Search Results (动态注入 search.js) ========== */
.search-results{
  position:absolute;top:80px;left:0;right:0;
  max-height:calc(100vh - 96px);
  overflow-y:auto;-webkit-overflow-scrolling:touch;
  background:#fff;box-shadow:0 18px 30px rgba(0,0,0,.10);
  padding:8px 0;display:none;
}
.search-results.is-visible{display:block}
.search-results .sr-group{padding:4px 0 10px}
.search-results .sr-group-title{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:#999;
  padding:10px 24px 6px;text-transform:uppercase;
}
.search-results .sr-item{
  display:flex;align-items:flex-start;gap:14px;
  padding:12px 24px;text-decoration:none;color:inherit;
  border-bottom:1px solid #f2f2f2;cursor:pointer;
}
.search-results .sr-item:hover{background:#f7f9fb}
.search-results .sr-item:last-child{border-bottom:none}
.search-results .sr-thumb{
  flex:none;width:64px;height:64px;border-radius:6px;overflow:hidden;
  background:#f2f4f7;display:flex;align-items:center;justify-content:center;
}
.search-results .sr-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.search-results .sr-body{min-width:0;flex:1}
.search-results .sr-title{
  font-size:15px;font-weight:600;color:var(--color-black,#1a1a1a);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.search-results .sr-item:hover .sr-title{color:var(--color-primary)}
.search-results .sr-meta{
  font-size:12px;color:#888;margin-top:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.search-results .sr-summary{
  font-size:13px;color:#666;margin-top:4px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.search-results .sr-empty,.search-results .sr-loading{
  padding:36px 24px;text-align:center;font-size:14px;color:#999;
}
.search-results .sr-loading::before{
  content:"";display:inline-block;width:14px;height:14px;margin-right:8px;
  border:2px solid #ddd;border-top-color:var(--color-primary);
  border-radius:50%;vertical-align:-2px;animation:sr-spin .8s linear infinite;
}
@keyframes sr-spin{to{transform:rotate(360deg)}}
/* 搜索推荐词（空态，按关键词具体度排序） */
.search-results .sr-suggest{padding:16px 24px 10px}
.search-results .sr-suggest-title{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:#999;
  text-transform:uppercase;margin-bottom:12px;
}
.search-results .sr-suggest-tags{display:flex;flex-wrap:wrap;gap:8px}
.search-results .sr-suggest-tag{
  appearance:none;border:1px solid #e2e6ea;background:#f7f9fb;color:#444;
  font-family:inherit;font-size:13px;line-height:1;padding:8px 14px;
  border-radius:999px;cursor:pointer;transition:border-color .15s,color .15s,background .15s;
}
.search-results .sr-suggest-tag:hover{
  border-color:var(--color-primary);color:var(--color-primary);background:#fff;
}
@media (max-width:768px){
  .search-results{top:64px;max-height:calc(100vh - 80px)}
  .search-results .sr-group-title{padding:8px 16px 4px}
  .search-results .sr-item{padding:10px 16px;gap:10px}
  .search-results .sr-thumb{width:48px;height:48px}
  .search-results .sr-title{font-size:14px}
  .search-results .sr-summary{-webkit-line-clamp:2;font-size:12px}
  .search-results .sr-suggest{padding:12px 16px 8px}
}

/* ========== Mobile Nav ========== */
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.mobile-toggle span{width:22px;height:2px;background:var(--color-black);transition:transform .3s,opacity .3s}
.mobile-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-toggle.active span:nth-child(2){opacity:0}
.mobile-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  position:fixed;top:72px;left:0;right:0;bottom:0;
  background:rgba(255,255,255,.98);backdrop-filter:blur(12px);z-index:999;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;
  transform:translateX(100%);transition:transform .4s cubic-bezier(.16,1,.3,1);
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{font-family:var(--font-body);font-weight:700;font-size:24px;color:var(--color-black)}

/* ========== Layout Responsive ========== */
@media (max-width:1280px){
  .nav{gap:28px}
}
@media (max-width:980px){
  .page-hero{min-height:240px;padding:48px 0}
  .page-hero h1{font-size:30px}
  .footer-top{flex-direction:column;gap:24px;}
  .footer-subscribe-row input{width:100%}
  .footer-nav{flex-wrap:wrap;gap:24px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
}
/* 屏幕过小：导航文字两字一行竖排，字号/间距随宽度同步收窄 */
@media (max-width:900px){
  .nav{gap:16px;margin:0 14px}
  .nav a{
    display:block;width:2em;height:auto;padding:6px 0;
    font-size:14px;text-align:center;line-height:1.3;
  }
  .nav a::after{bottom:2px}
}
@media (max-width:720px){
  .nav{gap:10px;margin:0 10px}
  .nav a{font-size:13px;padding:5px 0;line-height:1.25}
}
@media (max-width:768px){
  .search-panel input{width:80%}
  .search-close{right:24px}
}
/* 极窄屏才折叠为 hamburger 抽屉 */
@media (max-width:560px){
  .nav{display:none}
  .mobile-toggle{display:flex}
}
/* EN 菜单项更长：更宽屏即折叠为 hamburger 抽屉 */
@media (max-width:960px){
  html[data-lang="en"] .nav{display:none}
  html[data-lang="en"] .mobile-toggle{display:flex}
}
@media print{
  .header,.footer-subscribe,.floating-btns{display:none}
}

/* ========== 订阅确认弹窗 ========== */
.subscribe-modal-overlay{
  position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,.5);
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .2s ease;
}
.subscribe-modal-overlay.show{opacity:1}
.subscribe-modal{
  background:#fff;border-radius:12px;
  width:90%;max-width:380px;
  padding:28px 24px 20px;
  box-shadow:0 20px 60px rgba(0,0,0,.25);
  transform:scale(.95);transition:transform .2s ease;
}
.subscribe-modal-overlay.show .subscribe-modal{transform:scale(1)}
.subscribe-modal-body h3{
  font-family:var(--font-body);font-size:18px;font-weight:700;
  color:var(--ink);margin:0 0 12px;
}
.subscribe-modal-body p{
  font-size:14px;color:var(--muted,#666);line-height:1.7;margin:0;
}
.subscribe-modal-body a{color:var(--color-primary);text-decoration:underline}
.subscribe-modal-actions{
  display:flex;gap:10px;margin-top:24px;
}
.subscribe-modal-actions button{
  flex:1;height:42px;border-radius:8px;font-size:14px;font-weight:500;
  cursor:pointer;transition:all .2s;border:none;
}
.subscribe-modal-cancel{
  background:#f2f2f2;color:#666;
}
.subscribe-modal-cancel:hover{background:#e8e8e8}
.subscribe-modal-confirm{
  background:var(--color-primary);color:#fff;
}
.subscribe-modal-confirm:hover{background:#0E4BDB}