/* =========================================================
   艾普维尔 ApwerShelf 官网样式
   色系：蓝色莫兰迪  字体：思源黑体 / 微软雅黑
   ========================================================= */


:root {
  --c-primary: #227cb8;        
  --c-primary-dark: #0b5f9f;   
  --c-deep: #09518d;           
  --c-accent: #d9e9f8;         
  --c-light: #e7ebef;          
  --c-soft: #F5F8FA;           
  --c-text: #3D4A55;           
  --c-title: #2a3238;          
  --c-muted: #5f6a73;          
  --c-border: #c9d1d7;        
  --c-white: #ffffff;
  --shadow-sm: 0 2px 10px rgba(69, 96, 122, .08);
  --shadow-md: 0 8px 28px rgba(69, 96, 122, .14);
  --shadow-lg: 0 16px 44px rgba(69, 96, 122, .20);
  --radius: 10px;
  --header-h: 80px;
  --subnav-h: 56px;
  --font: "Noto Sans SC", "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
  --container: 1500px;
}



* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-soft);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .3s; }
ul, ol { list-style: none; }
button { font-family: var(--font); cursor: pointer; }

.container { width: var(--container); max-width: calc(100% - 40px); margin: 0 auto; }

/* ---------- 页面加载动画 ---------- */
#pageLoader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--c-soft);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 18px; transition: opacity .5s ease, visibility .5s;
}
#pageLoader.hide { opacity: 0; visibility: hidden; }
.loader-logo { width: 72px; animation: loaderPulse 1.2s ease-in-out infinite; }
.loader-bar { width: 180px; height: 4px; background: var(--c-light); border-radius: 4px; overflow: hidden; }
.loader-bar::after {
  content: ""; display: block; width: 40%; height: 100%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary));
  border-radius: 4px; animation: loaderSlide 1.1s ease-in-out infinite;
}
@keyframes loaderPulse { 0%,100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.08); opacity: 1; } }
@keyframes loaderSlide { 0% { transform: translateX(-100%); } 100% { transform: translateX(450%); } }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .12s; }
.reveal.d2 { transition-delay: .24s; }
.reveal.d3 { transition-delay: .36s; }

/* ---------- 头部导航 ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: transform .45s ease, box-shadow .3s;
}
body.header-hidden .header { transform: translateY(-100%); }
.header-inner {
  width: var(--container); max-width: calc(100% - 40px); margin: 0 auto;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo img { height: 50px; width: auto; transition: transform .4s; }
.logo:hover img { transform: scale(1.05); }

.nav > ul { display: flex; align-items: center; gap: 6px; height: 100%; }
.nav > ul > li { position: relative; height: var(--header-h); display: flex; align-items: center; }
.nav > ul > li > a {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 22px; font-size: 16px; font-weight: 400; color: var(--c-title);
  position: relative; transition: color .3s;
}
.nav > ul > li > a .arrow {
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .3s; color: var(--c-muted);
}
.nav > ul > li > a .arrow svg {
  width: 8px; height: 5px; fill: none; stroke: currentColor;
  stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  transition: transform .3s;
}
.nav > ul > li:hover > a { color: var(--c-primary-dark); }
/* 下划线：与栏目文字拉开距离 */
.nav > ul > li > a::after {
  content: ""; position: absolute; left: 50%; bottom: -10px; transform: translateX(-50%);
  width: 0; height: 3px; border-radius: 3px; background: var(--c-primary); transition: width .35s ease;
}
.nav > ul > li:hover > a::after,
.nav > ul > li.active > a::after { width: 32px; }
.nav > ul > li.active > a { color: var(--c-primary-dark); }
.nav > ul > li:hover > a .arrow svg { transform: rotate(180deg); color: var(--c-primary-dark); }

/* 二级下拉 */
.dropdown {
  position: absolute; top: calc(100% - 0px); left: 50%; transform: translate(-50%, 14px);
  min-width: 180px; background: var(--c-white); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 10px;
  opacity: 0; visibility: hidden; transition: all .35s ease;
  border-top: 0px solid var(--c-primary);
}
.nav li:hover .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 6px); }
/* 靠右的栏目下拉右对齐，避免超出屏幕 */
.nav > ul > li:last-child .dropdown { left: auto; right: 0; transform: translateY(14px); }
.nav > ul > li:last-child:hover .dropdown { transform: translateY(6px); }
.dropdown a {
  display: block;
  padding: 5px 10px; font-size: 15px; color: var(--c-text);
  border-radius: 8px; transition: all .3s;
}
.dropdown a:hover { color: var(--c-primary-dark); background: var(--c-light); padding-left: 26px; }

/* 产品中心全宽 Mega Menu */
.mega {
  position: fixed; left: 0; right: 0; top: var(--header-h);
  background: var(--c-white);
  box-shadow: 0 24px 40px rgba(69, 96, 122, .16);
  padding: 34px 0 38px;
  opacity: 0; visibility: hidden; transform: translateY(-12px);
  transition: all .4s ease;
  max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  border-top: 1px solid #d2d2d2;
}
.mega-inner { width: var(--container); max-width: calc(100% - 40px); margin: 0 auto; display: grid; grid-template-columns: repeat(8, 1fr); gap: 26px; }
.nav li.has-mega:hover .mega { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-col h4 { font-size: 16px; color: var(--c-title); padding-bottom: 10px; margin-bottom: 10px; border-bottom: 2px solid var(--c-light); position: relative; transition: color .3s; }
.mega-col:hover h4 { color: var(--c-primary-dark); }
.mega-col h4::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 26px; height: 2px; background: var(--c-primary); }
.mega-col ul li a { display: block; font-size: 14px; color: var(--c-muted); padding: 5px 0; transition: all .3s; }
.mega-col ul li a:hover { color: var(--c-primary-dark); transform: translateX(5px); }

/* 头部工具：搜索 + 语言 */
.header-tools { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; background: var(--c-light); border-radius: 24px; padding: 2px 6px 2px 16px; border: 1px solid transparent; transition: all .3s; }
.search-box:focus-within { border-color: var(--c-accent); background: var(--c-white); box-shadow: 0 0 0 2px rgba(124, 150, 171, .10); }
.search-box input { border: none; outline: none; background: transparent; width: 150px; font-size: 14px; font-family: var(--font); color: var(--c-text); }
.search-box button { border: none; background: var(--c-primary); color: #fff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: background .3s, transform .3s; }
.search-box button:hover { background: var(--c-primary-dark); transform: scale(1.08); }

.lang-box { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 8px; padding: 6px 14px;
  border: 1px solid var(--c-border); border-radius: 22px; background: var(--c-white);
  font-size: 14px; color: var(--c-title); transition: all .3s;
}
.lang-btn:hover { border-color: var(--c-accent); background: var(--c-light); }
.lang-btn .arrow { font-size: 11px; color: var(--c-muted); transition: transform .3s; }
.lang-box:hover .arrow { transform: rotate(180deg); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 150px;
  background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .3s;
}
.lang-box:hover .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu a { display: flex; align-items: center; gap: 10px; padding: 5px 10px; border-radius: 8px; font-size: 14px; transition: all .25s; }
.lang-menu a:hover { background: var(--c-light); color: var(--c-primary-dark); }
.lang-menu a.current { background: var(--c-light); color: var(--c-primary-dark); font-weight: 600; }
.flag { width: 24px; height: 16px; border-radius: 2px; overflow: hidden; flex: none; box-shadow: 0 0 0 1px rgba(0,0,0,.06); }

/* ---------- 内页子导航（固顶） ---------- */
.subnav {
  position: sticky; top: var(--header-offset, var(--header-h)); z-index: 800;
  background: rgba(255,255,255,.94); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  transition: top .45s ease;
}
.subnav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--subnav-h); }
.subnav-title { font-size: 20px; font-weight: 700; color: var(--c-title); display: flex; align-items: center; gap: 12px; }
.subnav-title::before { content: ""; width: 5px; height: 22px; border-radius: 3px; background: var(--c-primary); }
.subnav-links { display: flex; gap: 8px; }
.subnav-links a {
  padding: 6px 20px; font-size: 15px; color: var(--c-muted); border-radius: 20px; transition: all .3s;
}
.subnav-links a:hover, .subnav-links a.active { color: #fff; background: var(--c-primary); }

/* ---------- Banner ---------- */
.banner { position: relative; height: 640px; margin-top: var(--header-h); overflow: hidden; }
.banner-slides, .banner-slide { position: absolute; inset: 0; }
.banner-slide { opacity: 0; visibility: hidden; transition: opacity 1s ease; }
.banner-slide.active { opacity: 1; visibility: visible; }
.banner-slide video, .banner-slide .banner-img {
  width: 100%; height: 100%; object-fit: cover;
}
/* 图片切换后缓慢放大，直到下一张切换（视频不做缩放） */
.banner-slide.active .banner-img { animation: bannerZoom 6.8s linear forwards; }
@keyframes bannerZoom { from { transform: scale(1); } to { transform: scale(1.14); } }
.banner-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(52, 76, 96, .62) 0%, rgba(52, 76, 96, .28) 55%, rgba(52, 76, 96, .08) 100%);
}
.banner-caption {
  position: absolute; z-index: 3; left: 50%; top: 50%; transform: translate(-50%, -42%);
  width: var(--container); max-width: calc(100% - 40px);
  color: #fff; text-align: left;
}
.banner-caption h2 { font-size: 52px; font-weight: 700; /* letter-spacing: 3px;  */text-shadow: 0 4px 18px rgba(0,0,0,.3); }
.banner-caption p { font-size: 20px; margin: 16px 0 34px; opacity: .92; letter-spacing: 1px; }
.banner-caption .slide-no { display: none; }
.banner.active-slide .banner-caption h2 { animation: capUp .9s .15s ease both; }
.banner.active-slide .banner-caption p { animation: capUp .9s .3s ease both; }
.banner.active-slide .banner-caption .btn { animation: capUp .9s .45s ease both; }
@keyframes capUp { from { opacity: 0; transform: translateY(36px); } to { opacity: 1; transform: none; } }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 38px; border-radius: 32px; font-size: 16px; font-weight: 400;
  transition: all .35s ease; border: none;
}
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 8px 20px rgba(94, 123, 147, .35); }
.btn-primary:hover { background: var(--c-deep); transform: translateY(-3px); box-shadow: 0 12px 26px rgba(69, 96, 122, .4); }
.btn-ghost { background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.75); }
.btn-ghost:hover { background: #fff; color: var(--c-deep); transform: translateY(-3px); }
.btn .btn-arrow { transition: transform .3s; }
.btn:hover .btn-arrow { transform: translateX(5px); }

/* banner 箭头 & 焦点 */
.banner-arrow {
  position: absolute; z-index: 5; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; border-radius: 50%; border: none;
  background: rgba(255,255,255,.22); color: #fff; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: all .35s; backdrop-filter: blur(4px);
}
.banner:hover .banner-arrow { opacity: 1; }
.banner-arrow:hover { background: var(--c-primary); transform: translateY(-50%) scale(1.1); }
.banner-arrow.prev { left: 34px; }
.banner-arrow.next { right: 34px; }
.banner-dots {
  position: absolute; z-index: 5; bottom: 30px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 12px;
}
.banner-dots button {
  width: 34px; height: 6px; border-radius: 6px; border: none;
  background: rgba(255,255,255,.42); transition: all .35s;
}
.banner-dots button.active { background: #fff; width: 52px; }
.banner-dots button:hover { background: var(--c-accent); }

/* ---------- 通用版块 ---------- */
.section { padding: 84px 0; }
.section.gray { background: var(--c-light); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head .en { font-size: 14px; letter-spacing: 5px; color: var(--c-primary); text-transform: uppercase; font-weight: 600; }
.section-head h2 { font-size: 36px; color: var(--c-title); margin: 8px 0 14px; /* letter-spacing: 2px; */ }
.section-head .line { width: 56px; height: 4px; border-radius: 4px; background: var(--c-primary); margin: 0 auto; }
.section-head p.desc { color: var(--c-muted); max-width: 860px; margin: 16px auto 0; font-size: 15.5px; }

/* 图片缩放交互 */
.img-zoom { overflow: hidden; border-radius: var(--radius); }
.img-zoom img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.img-zoom:hover img { transform: scale(1.09); }

/* ---------- 首页：公司介绍 ---------- */
.about-brief { display: grid; grid-template-columns: 1.05fr 1fr; gap: 60px; align-items: center; }
.about-brief .txt h3 { font-size: 30px; color: var(--c-title); margin-bottom: 20px; }
.about-brief .txt p { color: var(--c-muted); margin-bottom: 14px; text-align: justify; }
.about-brief .stats { display: flex; gap: 44px; margin: 30px 0 36px; }
.about-brief .stats b { display: block; font-size: 50px; line-height: 1.05; color: var(--c-primary-dark); }
.about-brief .stats b .plus { font-size: 18px; font-weight: 400; vertical-align: super; margin-left: 2px; }
.about-brief .stats span { font-size: 14px; color: var(--c-muted); }
.about-brief .pic { position: relative; }
.about-brief .pic .img-zoom { height: 430px; box-shadow: var(--shadow-lg); }
.about-brief .pic::before {
  content: ""; position: absolute; inset: 26px -26px -26px 26px;
  border: 2px solid var(--c-accent); border-radius: var(--radius); z-index: -1;
}

/* ---------- 首页：产品分类卡片 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.cat-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  height: 300px; display: flex; align-items: flex-end;
  box-shadow: var(--shadow-sm); transition: all .45s ease;
}
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.cat-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(51,65,77,0) 30%, rgba(51,65,77,.9) 100%); transition: opacity .4s; }
.cat-card:hover { box-shadow: var(--shadow-lg); }
.cat-card:hover img { transform: scale(1.1); }
.cat-card .info { position: relative; z-index: 2; padding: 24px; color: #fff; width: 100%; }
.cat-card .info h3 { font-size: 21px; margin-bottom: 4px; }
.cat-card .info p { font-size: 13.5px; opacity: .85; max-height: 0; overflow: hidden; transition: max-height .5s ease, margin .5s; }
.cat-card:hover .info p { max-height: 70px; margin-top: 6px; }
.cat-card .info .more { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; margin-top: 10px; color: var(--c-accent); }
.cat-card:hover .info .more { color: #fff; }
.center-more { text-align: center; margin-top: 46px; }

/* ---------- 首页：应用场景 ---------- */
.app-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.app-card {
  position: relative; height: 340px; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all .45s;
}
.app-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s; }
.app-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(69,96,122,0) 40%, rgba(69,96,122,.85) 100%); }
.app-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.app-card:hover img { transform: scale(1.1); }
.app-card .info { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; padding: 24px; color: #fff; }
.app-card .info h3 { font-size: 20px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.app-card .info h3 i { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); flex: none; }
.app-card .info p { font-size: 13.5px; opacity: .88; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 首页：资讯 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.news-card {
  background: var(--c-white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all .45s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-card .img-zoom { height: 200px; border-radius: 0; }
.news-card .body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.news-card .date { font-size: 13px; color: var(--c-primary); display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.news-card h3 { font-size: 17px; color: var(--c-title); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .3s; }
.news-card:hover h3 { color: var(--c-primary-dark); }
.news-card p { font-size: 14px; color: var(--c-muted); margin-top: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .more { margin-top: auto; padding-top: 16px; font-size: 14px; color: var(--c-primary); font-weight: 600; display: flex; align-items: center; gap: 6px; }
.news-card:hover .more { gap: 12px; }

/* ---------- 关于我们 ---------- */
.anchor-section { scroll-margin-top: calc(var(--header-offset, var(--header-h)) + var(--subnav-h) + 10px); }
.about-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 50px 0; }
.about-block + .about-block { border-top: 1px dashed var(--c-border); }
.about-block .pic .img-zoom { height: 400px; box-shadow: var(--shadow-md); border: #becfdc 1px solid; }
.about-block .pic { position: relative; }
.about-block.rev .pic { order: 2; }
.about-block .pic::before {
  content: ""; position: absolute; inset: 22px -22px -22px 22px;
  border: 2px solid var(--c-accent); border-radius: var(--radius); z-index: -1;
}
.about-block.rev .pic::before { inset: 22px 22px -22px -22px; }
.about-block .tag { display: inline-block; font-size: 13px; letter-spacing: 3px; color: var(--c-primary-dark); background: var(--c-light); border-radius: 16px; padding: 5px 18px; margin-bottom: 16px; font-weight: 600; }
.about-block h3 { font-size: 28px; color: var(--c-title); margin-bottom: 18px; }
.about-block .txt p { color: var(--c-muted); text-align: justify; margin-bottom: 12px; }
.about-block .txt ul.feat { margin-top: 14px; display: grid; gap: 10px; }
.about-block .txt ul.feat li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.about-block .txt ul.feat li::before { content: "✓"; flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--c-primary); color: #fff; font-size: 12px; display: flex; align-items: center; justify-content: center; margin-top: 4px; }

/* 合作流程步骤 */
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 30px; }
.flow-step { background: var(--c-white); border-radius: var(--radius); padding: 28px 22px; box-shadow: var(--shadow-sm); position: relative; transition: all .4s; }
.flow-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); background: var(--c-primary); }
.flow-step .num { font-size: 40px; font-weight: 800; color: var(--c-deep);  line-height: 1; margin-bottom: 14px; transition: all .4s; }
.flow-step:hover .num { color: rgba(255,255,255,.8); -webkit-text-stroke-color: rgba(255,255,255,.6); }
.flow-step h4 { font-size: 17px; color: var(--c-title); margin-bottom: 8px; transition: color .3s; }
.flow-step:hover h4 { color: #fff; }
.flow-step p { font-size: 13.5px; color: var(--c-muted); transition: color .3s; }
.flow-step:hover p { color: rgba(255,255,255,.85); }

/* ---------- 产品列表页 ---------- */
.page-banner { position: relative; margin-top: var(--header-h); height: 330px; overflow: hidden; }
.page-banner img { width: 100%; height: 100%; object-fit: cover; }
.page-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(69,96,122,.75), rgba(69,96,122,.35)); }
.page-banner .inner {
  position: absolute; z-index: 2; inset: 0;
  width: var(--container); max-width: calc(100% - 40px); margin: 0 auto;
  display: flex; flex-direction: column; justify-content: center; color: #fff;
}
.page-banner h2 { font-size: 40px; letter-spacing: 3px; }
.page-banner .crumbs { margin-top: 10px; font-size: 14.5px; opacity: .9; display: flex; gap: 8px; align-items: center; }
.page-banner .crumbs a:hover { color: var(--c-accent); }

.products-layout { display: grid; grid-template-columns: 290px 1fr; gap: 30px; align-items: start; margin: 40px 0 80px; }
.side-tree { background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.side-tree .tree-head { background: var(--c-primary); color: #fff; padding: 16px 22px; font-size: 17px; font-weight: 700; letter-spacing: 2px; }
.side-tree .tree-head small { display: block; font-size: 12px; font-weight: 400; opacity: .8; letter-spacing: 1px; }
.tree-group { border-bottom: 1px solid var(--c-light); }
.tree-group .lv1 {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 12px; font-size: 16px; font-weight: 500; color: var(--c-title);
  cursor: pointer; transition: all .3s; user-select: none;
}
.tree-group .lv1:hover, .tree-group .lv1.active { color: var(--c-primary-dark); background: var(--c-light); }
.tree-group .lv1 .tri { font-size: 11px; color: var(--c-muted); transition: transform .38s cubic-bezier(.4,0,.2,1), color .3s; }
.tree-group.open .lv1 .tri { transform: rotate(180deg); color: var(--c-primary-dark); }
/* 二级分类：默认收起，高度由 JS 按内容计算，保证展开/收起匀速平滑 */
.tree-sub { max-height: 0; overflow: hidden; background: var(--c-soft); opacity: 0; transition: max-height .38s cubic-bezier(.4,0,.2,1), opacity .32s ease; }
.tree-group.open > .tree-sub { opacity: 1; max-height: 1200px; }
/* 首屏渲染时不播放过渡动画 */
#treeBox.no-anim .tree-sub { transition: none; }
.tree-sub a { display: block; padding: 9px 22px 9px 34px; font-size: 14px; color: var(--c-muted); position: relative; transition: all .3s; }
.tree-sub a::before { content: ""; position: absolute; left: 22px; top: 50%; transform: translateY(-50%); width: 5px; height: 5px; border-radius: 50%; background: var(--c-accent); }
.tree-sub a:hover, .tree-sub a.active { color: var(--c-primary-dark); background: var(--c-light); padding-left: 40px; }
.tree-side-tip { padding: 18px 20px; font-size: 13px; color: var(--c-muted); line-height: 1.8; }
.tree-side-tip b { color: var(--c-primary-dark); }

.list-head { background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 26px 30px; margin-bottom: 26px; }
.list-head h2 { font-size: 24px; color: var(--c-title); display: flex; align-items: center; gap: 12px; }
.list-head h2::before { content: ""; width: 5px; height: 22px; border-radius: 3px; background: var(--c-primary); }
.list-head p { color: var(--c-muted); font-size: 14.5px; margin-top: 8px; text-align: justify; }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  background: var(--c-white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all .45s; display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.prod-card .img-zoom { height: 230px; border-radius: 0; }
.prod-card .body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.prod-card h3 { font-size: 17.5px; color: var(--c-title); transition: color .3s; }
.prod-card:hover h3 { color: var(--c-primary-dark); }
.prod-card p { font-size: 13.5px; color: var(--c-muted); margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.prod-card .more {
  margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--c-primary);
  display: inline-flex; align-items: center; gap: 6px; transition: gap .3s;
}
.prod-card:hover .more { gap: 12px; }

.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 44px; }
.pagination button {
  min-width: 42px; height: 42px; padding: 0 12px; border-radius: 8px;
  border: 1px solid var(--c-border); background: var(--c-white); color: var(--c-text);
  font-size: 15px; transition: all .3s;
}
.pagination button:hover:not(:disabled) { border-color: var(--c-primary); color: var(--c-primary-dark); transform: translateY(-2px); }
.pagination button.active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- 产品详情页 ---------- */
.detail-top { display: grid; grid-template-columns: 1.1fr 1fr; gap: 44px; margin: 44px 0 70px; align-items: start; }
.gallery .main-img { height: 520px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.gallery .main-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; cursor: zoom-in; }
.gallery .main-img:hover img { transform: scale(1.6); }
.gallery .thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin-top: 14px; }
.gallery .thumbs button { border-radius: 8px; overflow: hidden; border: 2px solid transparent; padding: 0; height: 78px; transition: all .3s; background: none; }
.gallery .thumbs button img { width: 100%; height: 100%; object-fit: cover; }
.gallery .thumbs button:hover { transform: translateY(-3px); }
.gallery .thumbs button.active { border-color: var(--c-primary); box-shadow: var(--shadow-sm); }

.detail-info .cat-tag { display: inline-block; font-size: 13px; color: var(--c-primary-dark); background: var(--c-light); padding: 4px 16px; border-radius: 14px; margin-bottom: 14px; font-weight: 600; }
.detail-info h1 { font-size: 30px; color: var(--c-title); margin-bottom: 12px; }
.detail-info .lead { color: var(--c-muted); font-size: 15px; text-align: justify; margin-bottom: 22px; }
.params { width: 100%; border-collapse: collapse; background: var(--c-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.params caption { text-align: left; font-size: 17px; font-weight: 700; color: var(--c-title); padding: 14px 18px 12px; background: var(--c-white); }
.params caption::before { content: ""; display: inline-block; width: 5px; height: 16px; background: var(--c-primary); border-radius: 3px; margin-right: 10px; }
.params tr { border-bottom: 1px solid var(--c-light); transition: background .25s; }
.params tr:last-child { border-bottom: none; }
.params tr:hover { background: var(--c-soft); }
.params th { width: 132px; text-align: left; padding: 12px 18px; font-size: 14px; color: var(--c-primary-dark); background: var(--c-light); font-weight: 600; }
.params td { padding: 12px 18px; font-size: 14px; color: var(--c-text); }
.detail-btns { display: flex; gap: 14px; margin-top: 26px; }

.detail-body { background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 30px 50px; margin-bottom: 80px; }
.detail-body h2 { font-size: 20px; color: var(--c-title); margin: 25px 0 25px; padding-left: 14px; border-left: 4px solid var(--c-primary);  line-height:1}
.detail-body h3.sec { font-size: 20px; color: var(--c-title); margin: 34px 0 16px; padding-left: 14px; border-left: 4px solid var(--c-primary); }
.detail-body h3.sec:first-child { margin-top: 0; }
.detail-body p { color: var(--c-muted); text-align: justify; margin-bottom: 12px; }
.detail-body ul { margin: 10px 0 18px; display: grid; gap: 10px; }
.detail-body ul li { display: flex; gap: 10px; color: var(--c-text); font-size: 15px; }
.detail-body ul li::before { content: "▪"; color: var(--c-primary); }
.detail-body .imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 24px 0; }
.detail-body .imgs .img-zoom { height: 300px; }

/* ---------- 应用场景页 ---------- */
.scene-block { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; padding: 40px 0; }
.scene-block.rev .pic { order: 2; }
.scene-block .pic .img-zoom { height: 380px; box-shadow: var(--shadow-md); border: #becfdc 1px solid;}
.scene-block .tag { display: inline-block; font-size: 13px; letter-spacing: 3px; color: var(--c-primary-dark); background: var(--c-light); border-radius: 16px; padding: 5px 18px; margin-bottom: 14px; font-weight: 600; }
.scene-block h3 { font-size: 26px; color: var(--c-title); margin-bottom: 14px; }
.scene-block p { color: var(--c-muted); text-align: justify; }
.scene-block .chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.scene-block .chips span { font-size: 13px; color: var(--c-primary-dark); background: var(--c-light); border: 1px solid var(--c-border); padding: 5px 16px; border-radius: 16px; transition: all .3s; }
.scene-block .chips span:hover { background: var(--c-primary); color: #fff; transform: translateY(-2px); }

/* ---------- 资讯列表页 ---------- */
.news-page-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin: 44px 0 80px; }
.news-page-grid .news-card .img-zoom { height: 220px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 1100px; margin: 44px auto 90px; display: grid; gap: 16px; }
.faq-item { background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; transition: box-shadow .35s; }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-q {
  width: 100%; display: flex; align-items: center; gap: 16px; text-align: left;
  padding: 20px 26px; background: none; border: none; font-size: 16.5px; font-weight: 600;
  color: var(--c-title); transition: color .3s;
}
.faq-item.open .faq-q, .faq-q:hover { color: var(--c-primary-dark); }
.faq-q .idx {
  flex: none; width: 34px; height: 34px; border-radius: 50%;
  background: var(--c-light); color: var(--c-primary-dark); font-size: 14px;
  display: flex; align-items: center; justify-content: center; transition: all .35s;
}
.faq-item.open .idx { background: var(--c-primary); color: #fff; transform: rotate(360deg); }
.faq-q .tri { margin-left: auto; color: var(--c-muted); transition: transform .35s; }
.faq-item.open .tri { transform: rotate(180deg); color: var(--c-primary-dark); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s ease; }
.faq-a-inner { padding: 0 26px 22px 76px; color: var(--c-muted); font-size: 15px; text-align: justify; }

/* ---------- 联系我们 ---------- */
.contact-block { display: grid; grid-template-columns: 1fr 1.25fr; gap: 44px; margin: 44px 0 80px; align-items: start; }
.contact-info-card { background: linear-gradient(160deg, var(--c-deep), var(--c-primary)); border-radius: var(--radius); color: #fff; padding: 40px 36px; box-shadow: var(--shadow-md); }
.contact-info-card h3 { font-size: 24px; margin-bottom: 6px; }
.contact-info-card > p { opacity: .85; font-size: 14px; margin-bottom: 26px; }
.contact-line { display: flex; gap: 16px; padding: 15px 0; border-bottom: 1px dashed rgba(255,255,255,.25); align-items: flex-start; }
.contact-line:last-of-type { border-bottom: none; }
.contact-line .ico { flex: none; width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,.16); display: flex; align-items: center; justify-content: center; transition: all .3s; }
.contact-line:hover .ico { background: rgba(255,255,255,.3); transform: scale(1.08); }
.contact-line b { display: block; font-size: 13px; opacity: .75; font-weight: 400; }
.contact-line span { font-size: 15.5px; }

.msg-form { background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 38px 40px; }
.msg-form h3 { font-size: 22px; color: var(--c-title); margin-bottom: 6px; }
.msg-form > p { font-size: 14px; color: var(--c-muted); margin-bottom: 26px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 22px; }
.form-item { display: flex; flex-direction: column; gap: 7px; }
.form-item.full { grid-column: 1 / -1; }
.form-item label { font-size: 14px; color: var(--c-title); font-weight: 600; }
.form-item label i { color: #cf7a7a; font-style: normal; margin-left: 3px; }
.form-item input, .form-item textarea {
  border: 1px solid var(--c-border); border-radius: 8px; padding: 12px 14px;
  font-size: 14.5px; font-family: var(--font); color: var(--c-text); outline: none;
  background: var(--c-soft); transition: all .3s; resize: vertical;
}
.form-item input:hover, .form-item textarea:hover { border-color: var(--c-accent); }
.form-item input:focus, .form-item textarea:focus { border-color: var(--c-primary); background: #fff; box-shadow: 0 0 0 3px rgba(124,150,171,.14); }
.radio-row { display: flex; gap: 26px; padding-top: 4px; }
.radio-row label { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; font-size: 15px; }
.radio-row input { accent-color: var(--c-primary); width: 17px; height: 17px; cursor: pointer; }
.captcha-row { display: flex; gap: 12px; align-items: center; }
.captcha-row input { flex: 1; }
.captcha-code {
  flex: none; width: 118px; height: 46px; border-radius: 8px; cursor: pointer;
  font-size: 22px; letter-spacing: 5px; user-select: none;
  display: flex; align-items: center; justify-content: center;
  font-style: italic; font-weight: 700; border: 1px solid var(--c-border);
  transition: transform .2s;
}
.captcha-code:hover { transform: scale(1.03); }
.form-tip { grid-column: 1 / -1; font-size: 13.5px; color: #b3705f; min-height: 20px; }
.msg-form .btn { margin-top: 24px; width: 200px; justify-content: center; }
.form-success {
  display: none; margin-top: 20px; padding: 14px 18px; border-radius: 8px;
  background: #e5efdd; color: #5c7a44; font-size: 14.5px;
}
.form-success.show { display: block; animation: capUp .6s ease both; }

/* ---------- 页脚 ---------- */
.footer { background: var(--c-deep); color: rgba(255,255,255,.82); margin-top: 0; }
.footer-main { display: grid; grid-template-columns: 1.15fr 1fr; gap: 70px; padding: 64px 0 50px; }
.footer h4 { color: #fff; font-size: 18px; margin-bottom: 18px; letter-spacing: 1px; position: relative; padding-bottom: 12px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; border-radius: 3px; background: var(--c-accent); }
.footer .f-intro { font-size: 14px; opacity: .8; line-height: 1.9; margin-bottom: 24px; text-align: justify; }
.f-contact li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 13px; font-size: 14.5px; }
.f-contact li svg { flex: none; margin-top: 4px; opacity: .85; }
.subscribe { display: flex; margin-top: 22px; border-radius: 26px; overflow: hidden; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25); transition: all .3s; max-width: 420px; }
.subscribe:focus-within { background: rgba(255,255,255,.2); border-color: var(--c-accent); }
.subscribe input { flex: 1; border: none; outline: none; background: transparent; padding: 12px 20px; color: #fff; font-size: 14px; font-family: var(--font); }
.subscribe input::placeholder { color: rgba(255,255,255,.55); }
.subscribe button { border: none; background: var(--c-accent); color: var(--c-deep); font-weight: 700; padding: 0 26px; font-size: 14px; transition: all .3s; }
.subscribe button:hover { background: #fff; }
.socials { display: flex; gap: 14px; margin-top: 24px; }
.socials a {
  width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center; transition: all .35s;
}
.socials a:hover { background: var(--c-accent); transform: translateY(-4px); }
.socials a svg { fill: #fff; }

.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-links li { margin-bottom: 6px; line-height: 1.3; }
.footer-links a { font-size: 14.5px; opacity: .8; position: relative; transition: all .3s; display: inline-block; }
.footer-links a:hover { opacity: 1; color: #fff; transform: translateX(5px); }
.footer-links .sub { padding-left: 16px; font-size: 13.5px; opacity: .65; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.14); padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13.5px; opacity: .65; }
.footer-bottom a:hover { color: #fff; opacity: 1; }

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed; right: 30px; bottom: 40px; z-index: 880;
  width: 48px; height: 48px; border-radius: 50%; border: none;
  background: var(--c-primary); color: #fff; font-size: 18px;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
  transform: translateY(16px); transition: all .4s;
}
#backTop.show { opacity: 1; visibility: visible; transform: none; }
#backTop:hover { background: var(--c-deep); transform: translateY(-4px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1560px) {
  :root { --container: calc(100vw - 80px); }
  .nav > ul > li > a { padding: 8px 14px; font-size: 16px; }
  .search-box input { width: 110px; }
}
@media (max-width: 1280px) {
  .header-inner { gap: 14px; }
  .nav > ul { gap: 0; }
  .nav > ul > li > a { padding: 8px 10px; font-size: 15px; }
  .search-box input { width: 90px; }
  .mega-inner { grid-template-columns: repeat(4, 1fr); row-gap: 30px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .news-page-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .about-brief, .about-block, .detail-top, .contact-block, .scene-block { grid-template-columns: 1fr; }
  .about-block.rev .pic, .scene-block.rev .pic { order: 0; }
  .products-layout { grid-template-columns: 1fr; }
  .side-tree { position: static; }
  .banner { height: 520px; }
  .gallery .main-img { height: 420px; }
}
@media (max-width: 768px) {
  :root { --header-h: 66px; --container: calc(100vw - 32px); }
  .logo img { height: 40px; }
  .nav { display: none; }
  .search-box input { width: 0; padding: 0; }
  .search-box:focus-within input { width: 110px; padding: 0 4px; }
  .banner { height: 380px; margin-top: var(--header-h); }
  .banner-caption h2 { font-size: 28px; letter-spacing: 1px; }
  .banner-caption p { font-size: 15px; margin: 10px 0 20px; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
  .cat-grid, .news-grid, .prod-grid, .news-page-grid, .flow-steps, .footer-links { grid-template-columns: 1fr 1fr; }
  .app-strip { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 44px; padding: 48px 0 40px; }
  .about-brief .stats { gap: 26px; }
  .about-brief .pic .img-zoom, .about-block .pic .img-zoom, .scene-block .pic .img-zoom { height: 260px; }
  .detail-body { padding: 28px 22px; }
  .detail-body .imgs { grid-template-columns: 1fr; }
  .gallery .main-img { height: 280px; }
  .gallery .thumbs { grid-template-columns: repeat(3, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .msg-form { padding: 26px 20px; }
  .subnav-links { overflow-x: auto; }
  .subnav-title span { display: none; }
  .mega-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom .container { justify-content: center; text-align: center; }
}
@media (max-width: 480px) {
  .cat-grid, .news-grid, .prod-grid, .news-page-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: 1fr; }
  .banner-arrow { display: none; }
}

/* ---------- 移动端汉堡菜单 ---------- */
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; padding: 9px 10px;
  background: none; border: 1px solid var(--c-border); border-radius: 8px;
  transition: all .3s;
}
.nav-toggle span { display: block; height: 2px; border-radius: 2px; background: var(--c-deep); transition: all .35s; }
.nav-toggle:hover { background: var(--c-light); }

.m-mask {
  position: fixed; inset: 0; z-index: 950; background: rgba(51, 65, 77, .5);
  opacity: 0; visibility: hidden; transition: all .4s; backdrop-filter: blur(2px);
}
.m-menu {
  position: fixed; z-index: 960; top: 0; right: 0; bottom: 0;
  width: 300px; max-width: 86vw; background: var(--c-white);
  box-shadow: -10px 0 40px rgba(51, 65, 77, .25);
  transform: translateX(100%); transition: transform .45s cubic-bezier(.22, .9, .3, 1);
  overflow-y: auto; padding-bottom: 30px;
}
body.m-open .m-mask { opacity: 1; visibility: visible; }
body.m-open .m-menu { transform: translateX(0); }
body.m-open { overflow: hidden; }

.m-menu-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--c-light);
  position: sticky; top: 0; background: var(--c-white); z-index: 2;
}
.m-menu-head img { height: 40px; }
.m-close {
  width: 36px; height: 36px; border-radius: 50%; border: none;
  background: var(--c-light); color: var(--c-deep); font-size: 15px; transition: all .3s;
}
.m-close:hover { background: var(--c-primary); color: #fff; transform: rotate(90deg); }

.m-nav { padding: 12px 14px; }
.m-nav > a, .m-group > button {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 13px 14px; border: none; background: none;
  font-size: 15.5px; font-weight: 600; color: var(--c-title);
  border-radius: 8px; transition: all .3s; font-family: var(--font);
}
.m-nav > a:hover, .m-group > button:hover { background: var(--c-light); color: var(--c-primary-dark); }
.m-group .tri { font-size: 12px; color: var(--c-muted); transition: transform .3s; }
.m-group.open .tri { transform: rotate(180deg); }
.m-sub { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.m-group.open .m-sub { max-height: 500px; }
.m-sub a {
  display: block; padding: 9px 14px 9px 30px; font-size: 14px;
  color: var(--c-muted); position: relative; border-radius: 8px; transition: all .25s;
}
.m-sub a::before { content: ""; position: absolute; left: 18px; top: 50%; transform: translateY(-50%); width: 4px; height: 4px; border-radius: 50%; background: var(--c-accent); }
.m-sub a:hover { background: var(--c-soft); color: var(--c-primary-dark); }
.m-lang { margin: 16px 14px 0; padding-top: 16px; border-top: 1px dashed var(--c-border); }
.m-lang > span { display: block; font-size: 12.5px; color: var(--c-muted); margin-bottom: 8px; letter-spacing: 1px; }
.m-lang a {
  display: inline-flex; align-items: center; gap: 8px; margin-right: 12px;
  padding: 7px 14px; border-radius: 18px; font-size: 14px;
  border: 1px solid var(--c-border); transition: all .3s;
}
.m-lang a.current { background: var(--c-light); border-color: var(--c-accent); color: var(--c-primary-dark); font-weight: 600; }

/* 内页锚点防遮挡 */
.tree-group { scroll-margin-top: calc(var(--header-offset, var(--header-h)) + var(--subnav-h) + 12px); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
}

/* =========================================================
   第二轮修改：视差场景 / 圆形卡片 / 悬浮社媒 / 布局居中 等
   ========================================================= */

/* ---------- 应用场景：视差滚动 + 单排圆形卡片 ---------- */
.app-parallax { position: relative; overflow: hidden; padding: 92px 0 84px; }
.app-parallax-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(rgba(0, 50, 100, 0),rgba(1, 15, 50, 0.9)),
    url(../img/app-bigstore.webp) center center / cover no-repeat;
  background-attachment: fixed, fixed;
  background-size: cover, cover;
}
.app-parallax-inner { position: relative; z-index: 2; }
.section-head.white .en { color: var(--c-accent); }
.section-head.white h2 { color: #fff; }
.section-head.white .line { background: var(--c-accent); }
.section-head.white .desc { color: rgba(255, 255, 255, .82); }

.app-circle-wrap { display: flex; align-items: center; gap: 16px; }
.app-circle-track {
  flex: 1; display: flex; gap: 30px; overflow-x: auto; scroll-behavior: smooth;
  padding: 10px 4px 18px; scrollbar-width: none; -ms-overflow-style: none;
}
.app-circle-track::-webkit-scrollbar { display: none; }
.ac-card { flex: 0 0 calc((100% - 120px) / 5); text-align: center; color: #fff; }
.ac-img {
  width: min(100%, 196px); height: auto; aspect-ratio: 1; margin: 0 auto 18px; border-radius: 50%;
  overflow: hidden; border: 2px solid rgba(255, 255, 255, .8);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .28);
  transition: transform .45s ease, border-color .45s ease, box-shadow .45s ease;
}
.ac-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.ac-card:hover .ac-img { transform: translateY(-8px); border-color: var(--c-accent); box-shadow: 0 18px 40px rgba(0, 0, 0, .38); }
.ac-card:hover .ac-img img { transform: scale(1.16); }
.ac-card h3 { font-size: 18px; margin-bottom: 8px; line-height: 1.5; }
.ac-card p {
  font-size: 15px; line-height: 1.4; color: rgba(255, 255, 255, .8);
  padding: 0 20px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ac-arrow {
  flex: none; width: 46px; height: 46px; border-radius: 50%; border: none;
  background: rgba(255, 255, 255, .18); color: #fff; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px); transition: all .35s;
}
.ac-arrow:hover { background: var(--c-primary); transform: scale(1.1); }

/* ---------- 右下角悬浮社媒（点击向左展开） ---------- */
.social-float {
  position: fixed; right: 30px; bottom: 104px; z-index: 890;
  display: flex; align-items: center; justify-content: flex-end;
}
.sf-list {
  display: flex; align-items: center; gap: 10px;
  max-width: 0; opacity: 0; overflow: hidden;
  transition: max-width .55s cubic-bezier(.22, .9, .3, 1), opacity .4s ease, margin .55s;
}
.social-float.open .sf-list { max-width: 520px; opacity: 1; margin-right: 12px; }
.sf-list a {
  flex: none; width: 42px; height: 42px; border-radius: 50%;
  background: var(--c-white); color: var(--c-primary-dark);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  transition: transform .35s, background .35s, color .35s;
  transform: translateX(14px);
}
.social-float.open .sf-list a { transform: none; }
.sf-list a svg { width: 21px; height: 21px; }
.sf-list a:hover { background: var(--c-primary); color: #fff; transform: translateY(-4px) scale(1.06); }
.sf-toggle {
  flex: none; width: 48px; height: 48px; border-radius: 50%; border: none;
  background: var(--c-primary); color: #fff; box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  transition: all .35s;
}
.sf-toggle svg { width: 22px; height: 22px; }
.sf-toggle:hover { background: var(--c-deep); transform: translateY(-3px); }
.social-float.open .sf-toggle { background: var(--c-deep); }

/* ---------- 产品分类树：父级为按钮（点击展开），无子类直接跳转 ---------- */
.side-tree .lv1 {
  width: 100%; text-align: left; border: none; background: none;
  font-family: var(--font); cursor: pointer;
}
.side-tree a.lv1 { display: flex; }
.tree-sub a.view-all { font-weight: 600; color: var(--c-primary-dark); }

/* 一级类目展开态：标题蓝色加粗 */
.tree-group.open > .lv1 { color: var(--c-primary-dark); background: linear-gradient(90deg, var(--c-accent), transparent); }
.tree-group.open > .lv1 > a.lv1,
.tree-group.open > .lv1 > span.tri { color: var(--c-primary-dark); }
.tree-group.open > .lv1 > a.lv1 { font-weight: 700; }

/* ---------- 产品中心 / 产品详情：内容左右居中 ---------- */
.products-layout { max-width: 1500px; }
#detailTop { max-width: 1500px; margin-left: auto; margin-right: auto; }
#detailBody { max-width: 1500px; margin-left: auto; margin-right: auto; }

/* ---------- 页脚：右侧栏目 4 列 ---------- */
.footer-links { grid-template-columns: 1fr 1.15fr 1.15fr 1fr; gap: 24px; }

/* ---------- 联系我们：左右两栏等高、表单无字段标题 ---------- */
.contact-block { align-items: stretch; }
.contact-info-card { display: flex; flex-direction: column; }
.contact-info-card .f-note { margin-top: auto; padding-top: 22px; font-size: 13.5px; color: rgba(255, 255, 255, .78); line-height: 1.9; border-top: 1px dashed rgba(255, 255, 255, .25); }
.msg-form { display: flex; flex-direction: column; }
.msg-form form { display: flex; flex-direction: column; flex: 1; }
.msg-form .form-grid { flex: 1; grid-template-rows: repeat(3, min-content) 1fr; }
.msg-form .form-item input { padding: 13px 16px; }
.msg-form .form-item.full { display: flex; }
.msg-form .form-item.full textarea { flex: 1; min-height: 150px; }
.form-item input::placeholder, .form-item textarea::placeholder { color: #9DAAB6; }
.radio-row { align-items: center; }
.radio-row .radio-label { font-size: 14px; color: var(--c-muted); margin-right: 4px; }
.msg-form .btn { margin-top: 18px; }

/* ---------- 第二轮：响应式补充 ---------- */
@media (max-width: 1280px) {
  .footer-links { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
  .products-layout, #detailTop, #detailBody { max-width: 100%; }
}
@media (max-width: 992px) {
  .app-parallax-bg { background-attachment: scroll, scroll; }
  .ac-card { flex-basis: calc((100% - 60px) / 3); }
  .ac-img { max-width: 180px; }
}
@media (max-width: 768px) {
  .footer-links { grid-template-columns: 1fr 1fr; }
  .app-parallax { padding: 60px 0 56px; }
  .ac-card { flex-basis: calc((100% - 30px) / 2); }
  .ac-img { max-width: 160px; border-width: 3px; }
  .ac-card h3 { font-size: 15px; }
  .ac-card p { font-size: 12.5px; }
  .ac-arrow { width: 38px; height: 38px; font-size: 14px; }
  .social-float { right: 18px; bottom: 92px; flex-direction: column; align-items: flex-end; }
  .sf-list { flex-wrap: wrap; justify-content: flex-end; width: 0; max-width: none; max-height: 0; gap: 8px; }
  .social-float.open .sf-list { width: 158px; max-height: 200px; margin: 0 0 10px 0; }
  .msg-form .form-grid { grid-template-rows: none; }
  .contact-info-card .f-note { margin-top: 24px; }
}

/* 产品卡片：图片与标题可点击 */
.prod-card .card-link { display: block; }
.prod-card .body h3 a { color: inherit; }
.prod-card .body h3 a:hover { color: var(--c-primary-dark); }

/* =========================================================
   第三轮修改
   ========================================================= */

/* ---------- 1. 头部下拉子栏目文字居中（产品中心 mega 不受影响） ---------- */
.dropdown a { text-align: center; }
.dropdown a:hover { padding-left: 20px; }

/* ---------- 3. 内页子导航左侧改为面包屑；banner 内改为副标题 ---------- */
.subnav-title { font-size: 15px; font-weight: 500; color: var(--c-muted); gap: 8px; }
.subnav-title::before { content: none; }
.subnav-title a { color: var(--c-muted); transition: color .3s; }
.subnav-title a:hover { color: var(--c-primary-dark); }
.subnav-title .sep { color: #B9C4CE; margin: 0 1px; }
.subnav-title b, .subnav-title .cur { color: var(--c-title); font-weight: 700; }

.page-banner .page-sub {
  margin-top: 14px; font-size: 17px; letter-spacing: 1.5px;
  color: rgba(255, 255, 255, .88); text-shadow: 0 1px 6px rgba(0, 0, 0, .2);
}

/* ---------- 4. 产品中心正文水平居中（基础规则的 margin 覆盖了左右） ---------- */
.products-layout { max-width: 1500px; margin-left: auto !important; margin-right: auto !important; }

/* ---------- 5. 左侧产品分类：滚动时浮动可见 ---------- */
@media (min-width: 993px) {
  .side-tree {
    position: sticky;
    top: calc(var(--header-h) + var(--subnav-h) + 16px);
    max-height: calc(100vh - var(--header-h) - var(--subnav-h) - 36px);
    overflow-y: auto;
    scrollbar-width: thin;
  }
}

/* =========================================================
   第四轮修改：移动端头部 / 悬浮社媒 / 子导航 / 对齐
   ========================================================= */

/* ---------- 1. 悬浮社媒：桌面鼠标经过即展开 ---------- */
@media (hover: hover) and (min-width: 993px) {
  .social-float:hover .sf-list { max-width: 520px; opacity: 1; margin-right: 12px; }
  .social-float:hover .sf-list a { transform: none; }
  .social-float:hover .sf-toggle { background: var(--c-deep); }
}

/* ---------- 2. 页脚联系方式：电话 / 传真 / 手机 三项独立显示 ---------- */
.f-contact li { margin-bottom: 10px; }
.f-contact li span { line-height: 1.6; }

/* ---------- 3. 语言按钮内的图标（桌面隐藏） ---------- */
.lang-icon {
  display: none; width: 20px; height: 20px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round;
}

/* ---------- 4. 移动端：头部隐藏时的悬浮菜单按钮（蓝底白图标） ---------- */
.m-fab {
  position: fixed; top: 12px; right: 16px; z-index: 930;
  width: 44px; height: 44px; border: none; border-radius: 10px;
  background: var(--c-primary); color: #fff; box-shadow: var(--shadow-md);
  display: none; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(-12px);
  transition: all .35s ease;
}
.m-fab svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
.m-fab:hover { background: var(--c-deep); }

@media (max-width: 768px) {
  .m-fab { display: flex; }
  body.header-hidden .m-fab { opacity: 1; visibility: visible; transform: none; }
  body.m-open .m-fab { opacity: 0; visibility: hidden; }
}

/* ---------- 5. 移动端：子导航只保留面包屑，且不再固顶 ---------- */
@media (max-width: 768px) {
  .subnav { position: static; top: auto; }
  .subnav-links { display: none; }
  .subnav-inner { justify-content: flex-start; height: 48px; }
  .subnav-title { font-size: 14px; }
  .subnav-title span, .subnav-title .sep { display: inline; }
  .subnav-title a, .subnav-title span { white-space: nowrap; }
  .subnav-title { overflow: hidden; text-overflow: ellipsis; }
}

/* ---------- 6. 移动端：返回顶部与悬浮社媒按钮右对齐 ---------- */
@media (max-width: 768px) {
  #backTop { right: 16px; bottom: 20px; width: 44px; height: 44px; font-size: 16px; }
  .social-float { right: 16px; bottom: 74px; align-items: flex-end; }
  .sf-toggle { width: 44px; height: 44px; }
  .sf-toggle svg { width: 20px; height: 20px; }
  .sf-list { padding-right: 0; }
}

/* ---------- 7. 移动端头部工具按钮：搜索蓝圆圈 + 语言图标，紧靠菜单按钮 ---------- */
@media (max-width: 768px) {
  .header-tools { gap: 8px; }
  /* 搜索：默认只有蓝圆圈 + 放大镜 */
  .search-box {
    position: relative; width: 32px; height: 32px; flex: none;
    background: none; border: none; padding: 0;
  }
  .search-box input { display: none; }
  .search-box button { width: 32px; height: 32px; }
  .search-box.open input {
    display: block; position: absolute; right: calc(100% + 8px); top: 50%; transform: translateY(-50%);
    width: min(260px, calc(100vw - 216px)); height: 38px; padding: 0 16px;
    border: 1px solid var(--c-accent); border-radius: 19px; background: var(--c-white);
    box-shadow: var(--shadow-md); font-size: 14px; color: var(--c-text); outline: none;
  }
  body.search-open .logo { opacity: 0; visibility: hidden; }
  /* 语言：默认只有语言图标 */
  .lang-btn { width: 32px; height: 32px; padding: 0; border-radius: 50%; justify-content: center; }
  .lang-btn .flag, .lang-btn .lang-name, .lang-btn .arrow { display: none; }
  .lang-btn .lang-icon { display: block; }
  .lang-menu { min-width: 140px; }
  .lang-box.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
}

/* =========================================================
   第五轮修改：移动端头部按钮等距右靠 + 搜索框下拉展开
   ========================================================= */

@media (max-width: 768px) {
  /* 1. 三个按钮紧靠右侧，彼此等距 10px（logo 占满左侧剩余空间） */
  .header-inner { gap: 10px; }
  .logo { margin-right: auto; }
  .header-tools { gap: 10px; }

  /* 2. 搜索框改为下拉展开（在头部下方整行展开） */
  body.search-open .logo { opacity: 1; visibility: visible; }
  .search-box.open input {
    position: fixed; top: var(--header-h); left: 0; right: 0; width: auto;
    height: 54px; padding: 0 20px;
    border: none; border-bottom: 1px solid var(--c-border); border-radius: 0;
    background: var(--c-white); box-shadow: 0 16px 28px rgba(69, 96, 122, .16);
    font-size: 15px; z-index: 920;
    opacity: 0; transform: translateY(-14px);
    animation: searchDrop .3s ease forwards;
  }
  .search-box.open input::placeholder { color: #9DAAB6; }
}

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

/* =========================================================
   第六轮修改：中间分辨率头部适配 + 语言按钮点击开合
   ========================================================= */

/* ---------- 1. 中等桌面分辨率（941~1100px）：压缩头部防止错乱 ---------- */
@media (max-width: 1100px) {
  .logo img { height: 44px; }
  .nav > ul > li > a { padding: 8px 10px; font-size: 15px; }
  .header-inner { gap: 12px; }
  .header-tools { gap: 12px; }
  .search-box input { width: 64px; }
  .lang-btn { padding: 6px 10px; gap: 6px; font-size: 13.5px; }
}

/* ---------- 2. ≤940px：头部统一切换为移动端布局（汉堡 + 圆形搜索 + 图标语言） ---------- */
@media (max-width: 940px) {
  .header-inner { gap: 10px; }
  .logo { margin-right: auto; }
  .logo img { height: 44px; }
  .header-tools { gap: 10px; }
  .nav { display: none; }
  .nav-toggle { display: flex; }

  /* 搜索：默认蓝圆圈，点击下拉展开 */
  .search-box { position: relative; width: 42px; height: 42px; flex: none; background: none; border: none; padding: 0; }
  .search-box input { display: none; }
  .search-box button { width: 42px; height: 42px; }
  .search-box.open input {
    display: block; position: fixed; top: var(--header-h); left: 0; right: 0; width: auto;
    height: 54px; padding: 0 20px; border: none; border-bottom: 1px solid var(--c-border);
    border-radius: 0; background: var(--c-white); box-shadow: 0 16px 28px rgba(69, 96, 122, .16);
    font-size: 15px; z-index: 920; opacity: 0; transform: translateY(-14px);
    animation: searchDrop .3s ease forwards;
  }
  body.search-open .logo { opacity: 1; visibility: visible; }

  /* 语言：默认仅图标；点击展开/收起（屏蔽触屏误触发的 hover 常开） */
  .lang-btn { width: 42px; height: 42px; padding: 0; border-radius: 50%; justify-content: center; }
  .lang-btn .flag, .lang-btn .lang-name, .lang-btn .arrow { display: none; }
  .lang-btn .lang-icon { display: block; }
  .lang-box:hover .lang-menu { opacity: 0; visibility: hidden; transform: translateY(8px); }
  .lang-box.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
  .lang-menu { min-width: 140px; }

  /* 悬浮菜单按钮同步启用 */
  .m-fab { display: flex; }
  body.header-hidden .m-fab { opacity: 1; visibility: visible; transform: none; }
  body.m-open .m-fab { opacity: 0; visibility: hidden; }
}

@media (max-width: 600px) {
  .logo img { height: 40px; }
}

/* =========================================================
   第七轮修改：移动端联系我们左右间距修复
   根因：验证码行（输入框 min-width:auto + 118px 验证码块）固有
   最小宽度超出手机可用宽度，grid 子项默认不可收缩导致内容向右溢出。
   ========================================================= */

/* 1. 表单控件允许收缩：验证码输入框与所有 input/textarea 可被压缩 */
.captcha-row input { min-width: 0; }
.form-item input, .form-item textarea { width: 100%; min-width: 0; }

/* 2. grid 子项允许收缩（联系我们两栏及其他网格通用兜底） */
.contact-block > *, .msg-form .form-grid > .form-item { min-width: 0; }

/* 3. 移动端：验证码块缩窄、表单内边距左右对称收紧 */
@media (max-width: 768px) {
  .captcha-code { width: 96px; height: 44px; letter-spacing: 4px; font-size: 19px; }
  .captcha-row { gap: 10px; }
  .msg-form { padding: 26px 18px; }
  .contact-info-card { padding: 32px 22px; }
  /* 安全兜底：防止任何意外溢出撑破页面（clip 不产生滚动容器，不影响 sticky） */
  body { overflow-x: clip; }
}

/* =========================================================
   第八轮修改：产品详情页
   ========================================================= */

/* ---------- 1. 左侧图片与右侧参数区域等高 ---------- */
@media (min-width: 993px) {
  .detail-top { align-items: stretch; }
  .detail-top .gallery {
    display: flex; flex-direction: column; height: 100%; min-height: 100%;
  }
  .detail-top .gallery .main-img { flex: 1 1 auto; min-height: 300px; height: auto; }
  .detail-top .gallery .thumbs { flex: none; }
  /* 参数侧内容不足时由表格区域撑满，使左右两栏底部齐平 */
  .detail-top .detail-info { display: flex; flex-direction: column; height: 100%; }
  .detail-top .detail-info .params { flex: 1 1 auto; }
  .detail-top .detail-info .detail-btns { flex: none; }
}

/* ---------- 2. 参数表格：去背景、只保留底部线条 ---------- */
.params {
  background: none; box-shadow: none; border-radius: 0; overflow: visible;
  border: none;
}
.params caption {
  background: none; padding: 0 0 14px; border-bottom: 1px solid var(--c-border);
}
.params tr { border-bottom: 1px solid var(--c-light); }
.params tr:last-child { border-bottom: 1px solid var(--c-light); }
.params tr:hover { background: none; }
.params th {
  background: none; color: var(--c-muted); font-weight: 600;
  padding: 12px 0; width: 108px;
}
.params td { padding: 12px 0 12px 18px; }

/* ---------- 3. 主图鼠标经过：轻微缩放（原为放大 1.6 倍） ---------- */
.gallery .main-img img { cursor: default; }
.gallery .main-img:hover img { transform: scale(1.05); }

/* ---------- 4. 缩略图默认浅色边框 ---------- */
.gallery .thumbs button {
  border: 1px solid var(--c-border);
}
.gallery .thumbs button.active { border-color: var(--c-primary); }

/* ---------- 移动端同步 ---------- */
@media (max-width: 992px) {
  .detail-top { align-items: start; }
  .detail-top .gallery, .detail-top .detail-info { height: auto; }
  .detail-top .gallery .main-img { flex: none; height: 420px; }
  .params th { width: 96px; }
  .params td { padding-left: 14px; font-size: 13.5px; }
  .params th { font-size: 13.5px; }
}
@media (max-width: 768px) {
  .detail-top .gallery .main-img { height: 280px; }
  .params caption { font-size: 16px; padding-bottom: 12px; }
  .params th { width: 84px; padding: 10px 0; }
  .params td { padding: 10px 0 10px 12px; font-size: 13px; }
}

/* =========================================================
   第八轮修改：资讯中心列表分页
   ========================================================= */

/* 日期行内的分类标签 */
.news-card .body .date {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.news-card .body .date .cat {
  font-size: 12px; color: var(--c-primary-dark); background: var(--c-light);
  padding: 2px 10px; border-radius: 10px; font-weight: 600;
}

/* 分页整体（产品列表与资讯列表共用） */
#newsPageBtns { margin-top: 44px; }

/* 资讯列表卡片滚动淡入（静态 HTML：由 main.js 的 .reveal 观察器加 .visible） */
.news-page-grid .news-card.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.news-page-grid .news-card.reveal.visible { opacity: 1; transform: none; }

/* 分页按钮：移动端缩小并换行 */
@media (max-width: 768px) {
  .pagination { gap: 8px; margin-top: 32px; flex-wrap: wrap; }
  .pagination button { min-width: 36px; height: 36px; padding: 0 10px; font-size: 14px; }
  #newsPageBtns { margin-top: 32px; }
}

/* =========================================================
   第九轮修改：关于我们页图片移动端显示不完整
   根因：≤768px 时 .about-* .pic .img-zoom 被固定为 height:260px，
   而 .img-zoom img 使用 object-fit:cover，宽幅照片左右两侧被裁切；
   同时 .pic::before 装饰边框向右偏移 -22px 导致溢出。
   ========================================================= */

/* 2. ≤992px：图片高度改为自适应，完整显示不裁切
   注意：这里不再设置 aspect-ratio。若强制定高，contain / 100% 宽度的图片
   会上下留白，圆角就被画在留白处而看不见图片圆角。高度交给图片自然撑开。 */
@media (max-width: 992px) {
  .about-brief .pic .img-zoom,
  .about-block .pic .img-zoom,
  .scene-block .pic .img-zoom {
    height: auto; aspect-ratio: auto; max-height: none;
  }
  .about-brief .pic .img-zoom img,
  .about-block .pic .img-zoom img,
  .scene-block .pic .img-zoom img { object-fit: initial; }
  /* 圆角直接作用在可见照片上（容器已无边框，见第十轮规则） */
  .about-brief .pic .img-zoom:hover img,
  .about-block .pic .img-zoom:hover img,
  .scene-block .pic .img-zoom:hover img { transform: scale(1.02); }
}

/* 3. ≤768px：图片高度已由第十轮规则统一为"按原图比例自适应"，
   此处只需回收装饰框预留的外边距（装饰框在 ≤992px 已隐藏）。 */
@media (max-width: 768px) {
  .about-block .pic, .scene-block .pic, .about-brief .pic { padding: 0; margin: 0 0 8px; }
}

/* 4. ≤480px：小屏同步外边距 */
@media (max-width: 480px) {
  .about-block .pic, .scene-block .pic, .about-brief .pic { margin: 0 0 8px; }
}

/* =========================================================
   第十轮修改
   ========================================================= */

/* ---------- 2. 资讯列表分页上下间距 ---------- */
/* 根因：.news-page-grid 底部 margin 80px 与 .pagination 顶部 margin 44px 叠加，
   分页上方间距过大（124px），而分页下方只剩 grid 的余量、与页脚之间过挤。
   改为：栅格不留底部外边距，由分页自身对称控制上下间距。 */
.news-page-grid { margin-bottom: 0; }
#newsPageBtns { margin-top: 40px; margin-bottom: 80px; }

@media (max-width: 992px) {
  #newsPageBtns { margin-top: 34px; margin-bottom: 64px; }
}
@media (max-width: 768px) {
  #newsPageBtns { margin-top: 28px; margin-bottom: 48px; }
}

/* ---------- 1. 关于我们 / 应用场景 图文版块：移动端只用图片自身圆角，无任何边框 ---------- */
/* 处理：≤992px 起
   ① 彻底隐藏装饰框（.pic::before 的线条）与容器自带的 1px 边框；
   ② 容器与图片都不描边，仅由 <img> 自身的 border-radius 呈现圆角；
   ③ img 块级化消除行内基线空隙，contain 保证照片不裁切。 */
@media (max-width: 992px) {
  /* 隐藏装饰框线条 */
  .about-brief .pic::before,
  .about-block .pic::before,
  .scene-block .pic::before,
  .about-block.rev .pic::before,
  .scene-block.rev .pic::before { content: none; display: none; border: none; }

  /* 容器：无边框、无底色、无阴影、无固定高宽比。
     关键：不再用 aspect-ratio 强行规定高度，否则 contain 会上下留白，
     圆角被画在留白处而看不到；这里让容器高度由图片自然决定。 */
  .about-brief .pic .img-zoom,
  .about-block .pic .img-zoom,
  .scene-block .pic .img-zoom {
    height: auto; aspect-ratio: auto; max-height: none;
    background: none; border: none; box-shadow: none;
    overflow: visible;
  }

  /* 图片：宽度铺满、高度按原比例自适应（不裁切），圆角直接作用在可见照片上 */
  .about-brief .pic .img-zoom img,
  .about-block .pic .img-zoom img,
  .scene-block .pic .img-zoom img {
    display: block;
    width: 100%; height: auto;
    object-fit: initial;
    vertical-align: top;
    border: none;
    border-radius: 14px;
  }

  /* 装饰框已隐藏，之前为它预留的外边距可回收 */
  .about-block .pic, .scene-block .pic, .about-brief .pic { padding: 0; margin: 0 0 8px; }
}

/* =========================================================
   第十一轮修改：移动端关于我们图片圆角不生效 —— 彻底修复
   根因（三层叠加）：
     ① 基础规则里有三处把高度写死（430/400/380/260px），图片被拉伸/裁切；
     ② ≤992px 又用 aspect-ratio:16/10 强制容器比例，而实际图片为
        1.633 / 1.806，二者不等 → 容器内出现上下留白，
        border-radius 画在留白上，肉眼看不出圆角；
     ③ 容器自带 border / box-shadow / overflow:hidden，圆角被边框盖住。
   方案：把最终裁决权放在样式表末尾（同权重下后者胜出），
        容器彻底中性化，圆角只画在可见的 <img> 上。
   ========================================================= */
@media (max-width: 992px) {
  /* 1) 关闭所有装饰框线条（含反向布局） */
  .about-brief .pic::before,
  .about-block .pic::before,
  .scene-block .pic::before,
  .about-block.rev .pic::before,
  .scene-block.rev .pic::before {
    content: none !important; display: none !important; border: 0 !important;
  }

  /* 2) 容器：高度交给图片自然撑开，去掉比例、边框、底色、阴影、裁切 */
  .about-brief .pic .img-zoom,
  .about-block .pic .img-zoom,
  .scene-block .pic .img-zoom,
  .about-block.rev .pic .img-zoom,
  .scene-block.rev .pic .img-zoom {
    height: auto !important;
    aspect-ratio: auto !important;
    max-height: none !important;
    border: 0 !important;
    background: none !important;
    box-shadow: none !important;
    overflow: visible !important;
    border-radius: 14px !important;   /* 兜底：容器本身也是圆角 */
  }

  /* 3) 图片：铺满宽度、按原比例自适应，圆角落在真实照片边缘 */
  .about-brief .pic .img-zoom img,
  .about-block .pic .img-zoom img,
  .scene-block .pic .img-zoom img,
  .about-block.rev .pic .img-zoom img,
  .scene-block.rev .pic .img-zoom img {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    object-fit: initial !important;
    vertical-align: top !important;
    border: 0 !important;
    border-radius: 14px !important;
    overflow: hidden;
  }

  /* 4) 装饰框已移除，回收原先为它预留的内外边距 */
  .about-block .pic, .scene-block .pic, .about-brief .pic { padding: 0 !important; margin: 0 0 8px !important; }
}

/* ≤480px：手机小屏圆角略收，避免视觉上过于圆润 */
@media (max-width: 480px) {
  .about-brief .pic .img-zoom,
  .about-block .pic .img-zoom,
  .scene-block .pic .img-zoom,
  .about-brief .pic .img-zoom img,
  .about-block .pic .img-zoom img,
  .scene-block .pic .img-zoom img { border-radius: 12px !important; }
}

/* =========================================================
   第十二轮修改：联系我们「性别」单选框显示异常修复
   根因：第七轮为修复移动端验证码行溢出，给 .form-item input 加了
        width:100%;min-width:0（第 1077 行）。该选择器与
        .radio-row input（第 537 行）特异度相同(0,1,1)但位置更靠后，
        导致单选框被拉伸成 100% 宽，把「先生 / 女士」文字挤出容器；
        且 .form-item input 的 padding/border/background 也被套用到单选框上。
   修复：以更高特异度还原单选框固有尺寸并剥离文本输入框样式，
        同时禁止压缩与折行，保证文字完整显示。
   ========================================================= */

/* 1. 还原单选框自身尺寸，剥离继承自 .form-item input 的文本框样式 */
.radio-row input[type="radio"] {
  flex: none;
  width: 17px;
  height: 17px;
  min-width: 17px;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  accent-color: var(--c-primary);
  cursor: pointer;
}

/* 2. 整行不压缩、不折行，文字不得被挤断行 */
.radio-row { flex-wrap: nowrap; }
.radio-row .radio-label { flex: none; white-space: nowrap; }
.radio-row label { flex: none; gap: 6px; white-space: nowrap; }

/* 3. 极窄屏兜底：整组换行，避免横向溢出 */
@media (max-width: 480px) {
  .radio-row { flex-wrap: wrap; gap: 12px 20px; }
}

/* =========================================================
   第十三轮修改：内页子导航面包屑统一
   背景：{eyou:position/} 输出结构为
        <a class='crumb' …>首页</a> {symbol} <a …>当前栏目</a>
   即「非末级带 class='crumb'、末级无 class、分隔符为 symbol 原样输出」。
   已在模板中用 symbol="<span class='sep'>›</span>" 让分隔符与手写版一致，
   此处补全末级样式，使其等同于手写版的 <b>。
   注意：不要在此类值中使用双引号 —— 标签编译器会把 symbol 直接拼进
        PHP 双引号字符串（core/…/taglib/Eyou.php 第 1108 行），会截断报错。
   ========================================================= */

/* 末级（当前位置）= 深粗体，等价手写版的 <b> */
.subnav-title a:not(.crumb) { color: var(--c-title); font-weight: 700; }
.subnav-title a:not(.crumb):hover { color: var(--c-title); }

/* 其余各级（含首页、中间层级）保持常规字重，不跟随容器的 500 */
.subnav-title a.crumb { font-weight: 400; }
.subnav-title .sep { font-weight: 400; }

/* =========================================================
   第十四轮修改：分页样式适配 {eyou:pagelist} 实际输出结构
   根因：CSS 只写了 .pagination button，而 pagelist 输出的并不是 button，
        而是没有 <ul> 包裹的 li > a 结构（见
        core/library/think/paginator/driver/Eyou.php 第 211-247 行）：
          可用页码  <li><a href="…">2</a></li>
          当前页    <li class="active"><a>1</a></li>
          禁用/省略 <li><a>&lt;</a></li>   ← 无 href
        选择器完全命中不到，导致分页退化成裸链接、样式错乱。
   方案：给 li > a 套用与 .pagination button 完全一致的参数。
   ========================================================= */

/* 1. li 脱离列表项渲染（外层无 ul，避免出现圆点标记） */
.pagination { list-style: none; }
.pagination li { display: flex; }

/* 2. 页码 / 上下页：尺寸、圆角、边框与 button 一致 */
.pagination li > a {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; height: 42px; padding: 0 12px; border-radius: 8px;
  border: 1px solid var(--c-border); background: var(--c-white); color: var(--c-text);
  font-size: 15px; text-decoration: none; transition: all .3s;
}
.pagination li:hover > a {
  border-color: var(--c-primary); color: var(--c-primary-dark); transform: translateY(-2px);
}

/* 3. 当前页：实心高亮 */
.pagination li.active > a {
  background: var(--c-primary); border-color: var(--c-primary); color: #fff;
}

/* 4. 禁用态：无 href 的 a 即不可点者为「上一页/下一页不可用」与省略号。
      注意必须排除 .active —— 当前页同样没有 href，否则会被一起置灰。 */
.pagination li:not(.active) > a:not([href]) { opacity: .4; cursor: not-allowed; }
.pagination li:not(.active):hover > a:not([href]) {
  border-color: var(--c-border); color: var(--c-text); transform: none;
}

/* 5. 移动端同步缩小 */
@media (max-width: 768px) {
  .pagination li > a { min-width: 36px; height: 36px; padding: 0 10px; font-size: 14px; }
}