/* HV 高压三电动力连接器技术站 · 原创样式
   色彩：深空蓝 #0b2447 / 电光青 #00a2e8 / 高压橙 #ff6a00 / 云底 #f5f8fc */
:root{
  --navy:#0b2447;
  --navy-2:#132f5c;
  --cyan:#00a2e8;
  --cyan-d:#0090d4;
  --cyan-l:#e6f6fe;
  --amber:#ff6a00;
  --ink:#16233a;
  --ink-2:#41546f;
  --ink-3:#71829a;
  --line:#e2e9f2;
  --bg:#ffffff;
  --bg-2:#f5f8fc;
  --radius:14px;
  --head-h:66px;
  --h2-inset:16px;
  --maxw:1240px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.2px;
}
img{max-width:100%;height:auto}
a{color:var(--cyan-d);text-decoration:none}
a:hover{color:var(--amber)}
h1,h2,h3,h4{line-height:1.4;margin:0;font-weight:700;letter-spacing:.3px}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
.skip-link{position:absolute;left:-9999px;top:0}
.skip-link:focus{left:12px;top:12px;z-index:200;background:var(--navy);color:#fff;padding:8px 14px;border-radius:8px}

/* ── 顶部导航 ── */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:80;height:var(--head-h);
  background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.head-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:var(--head-h);display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;color:var(--navy);flex-shrink:0}
.brand-mark{display:flex;color:var(--cyan)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16.5px;letter-spacing:.5px}
.brand-text i{font-style:normal;font-size:11.5px;color:var(--ink-3);letter-spacing:1px}
.nav-toggle{display:none;margin-left:auto;width:40px;height:36px;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer;padding:8px 9px}
.nav-toggle span{display:block;height:2px;background:var(--navy);border-radius:2px;margin:3px 0;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.primary-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list>li{position:relative}
.nav-list>li>a,.nav-list>li>.sub-toggle{
  display:inline-block;padding:8px 13px;border-radius:9px;font-size:14.5px;color:var(--ink);
  background:none;border:0;cursor:pointer;font-family:inherit;line-height:1.6;
}
.nav-list>li>a:hover,.nav-list>li>.sub-toggle:hover{background:var(--cyan-l);color:var(--cyan-d)}
.sub-toggle em{font-style:normal;font-size:10px;color:var(--ink-3);margin-left:2px}
.sub-menu{
  display:none;position:absolute;top:100%;left:0;min-width:190px;background:#fff;
  border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 44px rgba(11,36,71,.13);padding:8px;z-index:90;
}
.has-sub:hover .sub-menu,.sub-toggle[aria-expanded="true"]+.sub-menu{display:block}
.sub-menu li a{display:block;padding:8px 12px;border-radius:8px;font-size:14px;color:var(--ink-2)}
.sub-menu li a:hover{background:var(--cyan-l);color:var(--cyan-d)}

/* ── 通用区块 ── */
main{padding-top:var(--head-h)}
.sec{max-width:var(--maxw);margin:0 auto;padding:64px 24px}
.sec.alt{background:var(--bg-2);max-width:none}
.sec.alt>*{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{font-size:27px;color:var(--navy);position:relative;padding-left:14px}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--cyan),var(--amber))}
.sec-sub{color:var(--ink-2);font-size:15px;margin:10px 0 0;max-width:760px}
.sec-more{font-size:14.5px;color:var(--cyan-d);white-space:nowrap}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;transition:.2s;border:1px solid transparent}
.btn-primary{background:linear-gradient(120deg,var(--cyan),var(--cyan-d));color:#fff;box-shadow:0 10px 26px rgba(0,146,212,.3)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,146,212,.4)}
.btn-ghost{border-color:var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan-d)}
.tag-text{
  display:inline-block;padding:4px 12px;border-radius:999px;background:var(--cyan-l);
  color:var(--cyan-d);font-size:12.5px;margin:0 6px 6px 0;border:1px solid rgba(0,162,232,.2);
}

/* ── Hero ── */
.hero{position:relative;background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,#0d3b6b 100%);color:#fff;overflow:hidden}
.hero-grid{
  position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(0,162,232,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(0,162,232,.16) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 25% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 25% 40%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:88px 24px 78px}
.hero-badge{
  display:inline-block;padding:6px 15px;border-radius:999px;font-size:12.5px;letter-spacing:2px;
  background:rgba(255,106,0,.16);border:1px solid rgba(255,106,0,.5);color:#ffb27a;margin-bottom:22px;
}
.hero h1{font-size:clamp(28px,4.4vw,46px);font-weight:800;max-width:900px;line-height:1.28}
.hero h1 span{color:var(--cyan);position:relative;padding:0 4px}
.hero-lead{font-size:16px;color:#c5d8ee;max-width:790px;margin:22px 0 30px;line-height:1.9}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:46px 0 0;max-width:840px}
.hero-stats>div{border-left:2px solid rgba(0,162,232,.55);padding-left:14px}
.hero-stats dt{font-size:12.5px;color:#8fb4d8;letter-spacing:.5px}
.hero-stats dd{margin:4px 0 0;font-size:19px;font-weight:700;color:#fff}

/* ── 关键词云 ── */
.kw-cloud{max-width:none}
.kw-cloud .tag-text{padding:8px 17px;font-size:14px;background:#fff;border-color:var(--line);color:var(--ink-2);margin:0 10px 12px 0}
.kw-cloud .tag-text:hover{border-color:var(--cyan);color:var(--cyan-d)}

/* ── 产品卡 ── */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:20px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s;overflow:hidden}
.prod-card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 18px 40px rgba(11,36,71,.1)}
.prod-card a{display:block;padding:26px 24px 24px;color:inherit}
.prod-idx{font-size:12.5px;font-weight:800;color:var(--cyan);letter-spacing:2px}
.prod-card h3{font-size:17.5px;color:var(--navy);margin:10px 0 10px}
.prod-card p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.75}

/* ── 表格 ── */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px}
table.spec th,table.spec td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
table.spec thead th{background:var(--navy);color:#fff;font-weight:600;white-space:nowrap}
table.spec tbody tr:nth-child(even){background:var(--bg-2)}
table.spec tbody tr:last-child td{border-bottom:0}

/* ── 应用列表 ── */
.app-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(292px,1fr));gap:18px}
.app-list li{background:#fff;border:1px solid var(--line);border-left:3px solid var(--amber);border-radius:12px;padding:22px 22px 20px}
.app-list h3{font-size:16.5px;color:var(--navy);margin-bottom:10px}
.app-list p{font-size:14px;color:var(--ink-2);margin:0}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px}

/* ── CTA ── */
.cta-sec{background:linear-gradient(120deg,var(--cyan-d),var(--navy-2));color:#fff}
.cta-inner{max-width:var(--maxw);margin:0 auto;padding:60px 24px;text-align:center}
.cta-inner h2{font-size:25px;margin-bottom:14px}
.cta-inner p{color:#c5d8ee;max-width:720px;margin:0 auto 26px}

/* ── 面包屑（四类页通用，左缘与正文 H2 严格对齐）── */
.breadcrumb{padding-left:var(--h2-inset);margin:0 0 6px}
/* 面包屑与正文 H2 严格左对齐：补齐卡片左内边距+边框 */
.article-layout > .breadcrumb{padding-left:calc(var(--h2-inset) + 41px)}
.page-wrap > .breadcrumb{padding-left:calc(var(--h2-inset) + 49px)}
.list-layout > .breadcrumb{padding-left:0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:0;margin:0;font-size:13.5px;color:var(--ink-3)}
.breadcrumb li::after{content:"/";margin-left:8px;color:#c3cddb}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--cyan-d)}
.breadcrumb span[aria-current]{color:var(--navy);font-weight:600}

/* ── 文章 / 产品详情 ── */
.article-layout,.list-layout{max-width:var(--maxw);margin:0 auto;padding:30px 24px 70px}
.article-main{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;align-items:start}
.article-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 40px 44px;min-width:0}
.article-body h1{font-size:clamp(23px,3vw,32px);color:var(--navy);margin-bottom:16px;line-height:1.35}
.article-tags{margin-bottom:22px;padding-bottom:18px;border-bottom:1px dashed var(--line)}
.article-body h2{
  font-size:21px;color:var(--navy);margin:40px 0 16px;padding-left:var(--h2-inset);
  border-left:4px solid var(--cyan);line-height:1.45;
}
.article-body h3{font-size:17.5px;color:var(--navy-2);margin:30px 0 12px;padding-left:var(--h2-inset)}
.article-body p,.article-body li{color:var(--ink);font-size:15.5px;line-height:1.95}
.article-body ul,.article-body ol{padding-left:calc(var(--h2-inset) + 20px);margin:0 0 1.1em}
.article-body ul li{list-style:disc;margin-bottom:8px}
.article-body ol li{list-style:decimal;margin-bottom:8px}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--cyan-l);border-left:3px solid var(--cyan);
  border-radius:0 10px 10px 0;color:var(--navy-2);font-size:15px;
}
.article-body blockquote p:last-child{margin:0}
.pub-time{font-size:13.5px;color:var(--ink-3);margin:0 0 20px}
.pub-time time{font-variant-numeric:tabular-nums}
.scenario-list{padding-left:calc(var(--h2-inset) + 18px);margin-bottom:1.2em}
.scenario-list li{list-style:"▸ ";margin-bottom:10px;color:var(--ink);padding-left:6px}
.case-callout{
  margin:30px 0;padding:20px 22px;border-radius:12px;background:#fff8f2;border:1px solid #ffd9bd;
}
.case-callout-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--amber);letter-spacing:2px;margin-bottom:8px}
.case-callout p{margin:0;font-size:14.5px;color:var(--ink-2)}

/* FAQ */
.faq-block{margin-top:44px}
.faq-block h2{margin-top:0}
.faq-block details{border:1px solid var(--line);border-radius:11px;margin-bottom:11px;background:#fff;overflow:hidden}
.faq-block details[open]{border-color:var(--cyan)}
.faq-block summary{
  cursor:pointer;padding:15px 18px;font-size:15.5px;font-weight:600;color:var(--navy);
  list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center;
}
.faq-block summary::-webkit-details-marker{display:none}
.faq-block summary::after{content:"+";color:var(--cyan);font-size:19px;font-weight:700;flex-shrink:0}
.faq-block details[open] summary::after{content:"−"}
.faq-a{padding:0 18px 16px}
.faq-a p{margin:0;font-size:14.8px;color:var(--ink-2);line-height:1.9}

/* TOC */
.toc-aside{position:sticky;top:calc(var(--head-h) + 16px);max-height:calc(100vh - 100px);overflow-y:auto}
.toc-title{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:2px;padding-left:12px;margin-bottom:10px}
#toc{border-left:2px solid var(--line);padding-left:4px}
#toc ul{padding:0;margin:0}
#toc li{margin:0}
#toc a{display:block;padding:7px 10px;font-size:13.5px;color:var(--ink-2);border-radius:7px;line-height:1.6}
#toc a:hover{background:var(--cyan-l);color:var(--cyan-d)}
#toc .toc-lv3 a{padding-left:24px;font-size:12.8px;color:var(--ink-3)}

/* ── 列表页 ── */
.list-main{display:grid;grid-template-columns:216px minmax(0,1fr);gap:32px;align-items:start}
.cat-side{position:sticky;top:calc(var(--head-h) + 16px);background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 14px}
.cat-side-title{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:2px;padding:0 10px 10px;border-bottom:1px solid var(--line);margin-bottom:8px}
.category-list li{margin:2px 0}
.category-list a{display:block;padding:9px 12px;border-radius:9px;font-size:14.5px;color:var(--ink-2);transition:.18s}
.category-list a:hover{background:var(--cyan-l);color:var(--cyan-d)}
.category-list li.active a{background:var(--navy);color:#fff;font-weight:600}
.cat-content{min-width:0}
.archive-content{min-width:0}
.archive-content h1{font-size:26px;color:var(--navy);margin-bottom:12px}
.cat-content h1{font-size:26px;color:var(--navy);margin-bottom:12px}
.cat-desc{font-size:15px;color:var(--ink-2);margin-bottom:6px;background:var(--cyan-l);border-radius:10px;padding:14px 18px}
.list-count{font-size:13.5px;color:var(--ink-3);margin:14px 0 18px}
.entry-list li{margin-bottom:0}
.entry-item{padding:20px 0;border-bottom:1px solid var(--line)}
.entry-item:first-child{border-top:1px solid var(--line)}
.entry-title{font-size:17.5px;font-weight:700;color:var(--navy);display:inline-block;margin-bottom:8px}
.entry-title:hover{color:var(--cyan-d)}
.entry-sum{font-size:14.5px;color:var(--ink-2);margin:0 0 10px;line-height:1.8}
.entry-meta{font-size:12.8px;color:var(--ink-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.entry-meta time{font-variant-numeric:tabular-nums}
.pager{display:flex;align-items:center;gap:14px;margin-top:30px}
.pager-btn{padding:8px 18px;border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--navy);background:#fff}
.pager-btn:hover{border-color:var(--cyan);color:var(--cyan-d)}
.pager-cur{font-size:13.5px;color:var(--ink-3)}

/* ── 叶子页 ── */
.page-wrap{max-width:1040px;margin:0 auto;padding:30px 24px 70px}
.page-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:44px 48px 50px}
.page-card h1{font-size:clamp(23px,3vw,31px);color:var(--navy);margin-bottom:20px}
.page-card h2{font-size:20px;color:var(--navy);margin:34px 0 14px;padding-left:var(--h2-inset);border-left:4px solid var(--cyan)}
.page-card h3{font-size:17px;color:var(--navy-2);margin:26px 0 12px;padding-left:var(--h2-inset)}
.page-card p,.page-card li{font-size:15.5px;line-height:1.95;color:var(--ink)}
.page-card ul,.page-card ol{padding-left:calc(var(--h2-inset) + 20px);margin:0 0 1.1em}
.page-card ul li{list-style:disc;margin-bottom:8px}
.page-card ol li{list-style:decimal;margin-bottom:8px}
.nf-card{text-align:center}
.nf-code{font-size:76px;font-weight:800;color:var(--cyan);line-height:1;letter-spacing:4px}
.nf-links{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.nf-links a{padding:10px 22px;border:1px solid var(--line);border-radius:999px;color:var(--navy)}
.nf-links a:hover{border-color:var(--cyan);color:var(--cyan-d)}

/* ── 页脚 ── */
.site-foot{background:var(--navy);color:#c5d8ee;margin-top:0}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:58px 24px 40px;display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px}
.foot-brand b{color:#fff;font-size:17px}
.foot-brand p{font-size:13.8px;line-height:1.85;margin:12px 0 0;color:#9fbcd9}
.foot-note{margin-top:14px !important;color:#7d9cbd !important;font-size:12.8px !important}
.foot-col h3{color:#fff;font-size:14.5px;margin-bottom:14px;letter-spacing:1px}
.foot-col li{margin-bottom:9px}
.foot-col a{font-size:13.8px;color:#9fbcd9}
.foot-col a:hover{color:var(--cyan)}
.foot-bar{
  max-width:var(--maxw);margin:0 auto;padding:18px 24px 26px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.8px;color:#7d9cbd;
}

/* ── 悬浮工具胶囊 ── */
.tool-capsule{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:95;
  display:flex;flex-direction:column;gap:10px;
}
.cap-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  width:52px;height:66px;border:0;border-radius:999px;cursor:pointer;color:#fff;
  box-shadow:0 10px 26px rgba(11,36,71,.22);transition:.22s;font-family:inherit;padding:0;
}
.cap-card{background:linear-gradient(150deg,#ff8534,var(--amber))}
.cap-top{background:linear-gradient(150deg,var(--cyan),var(--cyan-d))}
.cap-btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(11,36,71,.3)}
.cap-text{font-size:11px;letter-spacing:1px;line-height:1}

/* 名片弹窗：300x500 原尺寸高清 */
.card-mask{position:fixed;inset:0;background:rgba(9,24,44,.72);z-index:120;display:flex;align-items:center;justify-content:center;padding:20px}
.card-mask[hidden]{display:none}
.card-box{position:relative;background:#fff;border-radius:16px;padding:14px 14px 10px;box-shadow:0 26px 70px rgba(0,0,0,.36);max-width:100%;width:328px}
.card-box img{display:block;width:300px;height:auto;max-width:none;border-radius:10px}
.card-close{
  position:absolute;top:-12px;right:-12px;width:32px;height:32px;border-radius:50%;border:0;
  background:var(--navy);color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.card-tip{margin:10px 2px 2px;text-align:center;font-size:13px;color:var(--ink-2)}

/* ── 响应式 ── */
@media (max-width:1100px){
  .article-main{grid-template-columns:1fr}
  .toc-aside{position:static;max-height:none;order:-1}
  .foot-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .primary-nav{
    display:none;position:absolute;top:var(--head-h);left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 16px 34px rgba(11,36,71,.12);max-height:calc(100vh - var(--head-h));overflow-y:auto;
  }
  .primary-nav.open{display:block}
  .nav-list{flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:2px}
  .nav-list>li>a,.nav-list>li>.sub-toggle{display:block;width:100%;text-align:left;padding:12px 12px;border-radius:9px}
  .sub-menu{display:none;position:static;box-shadow:none;border:0;padding:0 0 0 12px;min-width:0}
  .sub-toggle[aria-expanded="true"]+.sub-menu{display:block}
  .hero-inner{padding:62px 20px 56px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .sec{padding:48px 20px}
  .two-col{grid-template-columns:1fr;gap:20px}
  .list-main{grid-template-columns:1fr;gap:22px}
  .cat-side{position:static}
  .article-layout,.list-layout,.page-wrap{padding:22px 16px 56px}
  .article-body{padding:26px 20px 30px}
  .page-card{padding:30px 22px 34px}
  .article-layout > .breadcrumb{padding-left:calc(var(--h2-inset) + 21px)}
  .page-wrap > .breadcrumb{padding-left:calc(var(--h2-inset) + 23px)}
  .foot-inner{grid-template-columns:1fr;padding:44px 20px 30px}
  .tool-capsule{right:10px;gap:8px}
  .cap-btn{width:46px;height:58px}
  .card-box{width:auto}
  .card-box img{width:300px;height:auto}
  .nf-code{font-size:60px}
}
@media (max-width:520px){
  .hero-stats{grid-template-columns:1fr}
  .brand-text i{display:none}
}