/* ============================================================
   精密注塑代工 · 高端科技风样式
   - 面包屑与正文 H2 左缘对齐：二者均位于 .container(16px) 栅格内
   - 悬浮胶囊 + 企业微信名片弹窗（MD5 防缓存由 site.js 控制）
   ============================================================ */
:root{
  --navy:#0b1f3a;
  --navy-2:#0e2a52;
  --blue:#1e6fff;
  --cyan:#16d6e6;
  --ink:#16202e;
  --ink-2:#475467;
  --line:#e6ecf4;
  --bg:#ffffff;
  --bg-alt:#f4f8fe;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,31,58,.08);
  --h2-inset:16px;            /* 面包屑与 H2 共享的栅格内边距 */
  --maxw:1180px;
  --header-h:64px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;
  padding-top:var(--header-h);-webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none;}
a:hover{color:var(--cyan);}
img{max-width:100%;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--h2-inset);}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:1000;
  background:rgba(11,31,58,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:19px;letter-spacing:.5px;}
.logo-mark{width:22px;height:22px;border-radius:6px;
  background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 0 14px rgba(22,214,230,.5);}
.site-nav{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;}
.nav-link{display:flex;align-items:center;gap:4px;color:#dce6f5;padding:8px 14px;border-radius:8px;font-size:15px;transition:.2s;}
.nav-link:hover{background:rgba(255,255,255,.08);color:#fff;}
.has-children .caret{font-size:10px;opacity:.7;}
.submenu{
  position:absolute;top:100%;left:0;min-width:160px;background:#fff;border-radius:10px;
  box-shadow:var(--shadow);padding:8px;display:none;flex-direction:column;z-index:1100;
}
.has-children:hover .submenu{display:flex;}
.submenu a{color:var(--ink);padding:8px 12px;border-radius:6px;font-size:14px;white-space:nowrap;}
.submenu a:hover{background:var(--bg-alt);color:var(--blue);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;}

/* ---------- Breadcrumb ---------- */
.breadcrumb{padding:18px 0 6px;}
.breadcrumb-list{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin:0;padding:0;font-size:13px;color:var(--ink-2);}
.breadcrumb-item{display:flex;align-items:center;}
.breadcrumb-item a{color:var(--ink-2);}
.breadcrumb-item a:hover{color:var(--blue);}
.breadcrumb .sep{margin:0 6px;color:#b9c6da;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- Article layout ---------- */
.article-layout{padding-bottom:60px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;align-items:start;}
.article-main{max-width:780px;}
.article-title{font-size:30px;line-height:1.3;margin:6px 0 14px;color:var(--navy);letter-spacing:.3px;}
.article-meta{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap;}
.cat-tag{background:rgba(30,111,255,.1);color:var(--blue);font-size:13px;padding:3px 10px;border-radius:999px;font-weight:600;}
.badge-date{color:var(--ink-2);font-size:13px;}
.badge-status{background:rgba(22,214,230,.15);color:#0b7d88;font-size:13px;padding:3px 10px;border-radius:999px;}

.article-body{font-size:16.5px;color:var(--ink);}
.article-body h2{font-size:23px;color:var(--navy);margin:34px 0 12px;padding-left:12px;border-left:4px solid var(--blue);line-height:1.4;}
.article-body h3{font-size:18px;color:var(--navy-2);margin:24px 0 10px;}
.article-body p{margin:0 0 14px;}
.article-body ul,.article-body ol{margin:0 0 16px;padding-left:22px;}
.article-body li{margin:6px 0;}
.article-body strong{color:var(--navy);}
.article-body code{background:var(--bg-alt);padding:2px 6px;border-radius:5px;font-size:14px;color:#b9346a;}

/* tables */
table.data{width:100%;border-collapse:collapse;margin:14px 0 20px;font-size:15px;background:#fff;
  border:1px solid var(--line);border-radius:10px;overflow:hidden;box-shadow:var(--shadow);}
table.data th{background:var(--navy);color:#fff;text-align:left;padding:11px 14px;font-weight:600;}
table.data td{padding:10px 14px;border-top:1px solid var(--line);}
table.data tbody tr:nth-child(even){background:var(--bg-alt);}

/* callouts */
.callout{border-radius:10px;padding:14px 18px;margin:16px 0;font-size:15.5px;}
.callout-summary{background:linear-gradient(135deg,rgba(30,111,255,.08),rgba(22,214,230,.08));border:1px solid rgba(30,111,255,.25);}
.callout-conclusion{background:rgba(22,214,230,.1);border:1px solid rgba(22,214,230,.35);}
.callout-case{background:rgba(255,170,0,.1);border:1px solid rgba(255,170,0,.35);}
.callout p{margin:0;}
.callout strong{color:var(--navy);}

/* FAQ (裸 details) */
.faq{margin:30px 0;}
.faq h2{font-size:23px;color:var(--navy);margin:0 0 12px;padding-left:12px;border-left:4px solid var(--blue);}
details.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin:10px 0;box-shadow:var(--shadow);overflow:hidden;}
details.faq-item summary{cursor:pointer;padding:14px 18px;font-weight:600;color:var(--navy);list-style:none;position:relative;}
details.faq-item summary::-webkit-details-marker{display:none;}
details.faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--blue);}
details.faq-item[open] summary::after{content:"−";}
.faq-a{padding:0 18px 16px;color:var(--ink-2);}

/* related */
.related{margin:34px 0 0;border-top:1px solid var(--line);padding-top:18px;}
.related-title{font-size:20px;color:var(--navy);margin:0 0 12px;}
.related-list{list-style:none;margin:0;padding:0;}
.related-list li{margin:8px 0;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;}
.related-list a{font-weight:600;}
.related-cat{font-size:12px;color:var(--ink-2);background:var(--bg-alt);padding:2px 8px;border-radius:6px;}

/* TOC */
.toc-aside{position:sticky;top:calc(var(--header-h) + 16px);max-height:calc(100vh - 100px);overflow:auto;}
.toc-inner{background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;padding:16px;}
.toc-title{margin:0 0 10px;font-size:13px;color:var(--ink-2);text-transform:uppercase;letter-spacing:1px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin:6px 0;}
.toc-list a{color:var(--ink-2);font-size:14px;}
.toc-list a:hover{color:var(--blue);}
.toc-l3{padding-left:14px;font-size:13px;}

/* ---------- List layout ---------- */
.list-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:36px;padding-bottom:60px;}
/* 面包屑横跨整行，避免占用栅格列导致分类与列表错位 */
.list-layout>.breadcrumb{grid-column:1 / -1;}
.cat-side{position:sticky;top:calc(var(--header-h) + 16px);align-self:start;}
.cat-side-title{font-size:14px;color:var(--ink-2);margin:0 0 10px;font-weight:700;letter-spacing:.5px;}
.category-list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;}
.category-list li a{display:block;padding:12px 16px;color:var(--ink);border-bottom:1px solid var(--line);font-size:15px;}
.category-list li:last-child a{border-bottom:0;}
.category-list li a:hover{background:var(--bg-alt);color:var(--blue);}
.category-list li.active a{background:var(--navy);color:#fff;font-weight:600;}
.cat-content{min-width:0;}
.list-title{font-size:28px;color:var(--navy);margin:0 0 8px;}
.list-desc{color:var(--ink-2);margin:0 0 22px;}
.list-items{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.list-item{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);transition:.2s;}
.list-item:hover{transform:translateY(-3px);border-color:var(--blue);}
.item-cat{font-size:12px;color:var(--blue);background:rgba(30,111,255,.1);padding:2px 8px;border-radius:6px;}
.item-title{font-size:17px;color:var(--navy);margin:10px 0 6px;line-height:1.4;}
.item-sum{font-size:14px;color:var(--ink-2);margin:0 0 10px;line-height:1.6;}
.item-date{font-size:12px;color:#9aa7ba;}
.empty-tip{color:var(--ink-2);background:var(--bg-alt);padding:20px;border-radius:10px;}

/* ---------- Pages ---------- */
.page-wrap{padding-bottom:60px;}
.page-main{max-width:860px;}
.page-title{font-size:30px;color:var(--navy);margin:6px 0 20px;}
.page-main h2{font-size:22px;color:var(--navy);margin:28px 0 10px;padding-left:12px;border-left:4px solid var(--blue);}
.page-main h3{font-size:18px;color:var(--navy-2);margin:20px 0 8px;}
.page-main p{margin:0 0 14px;}
.page-main ul,.page-main ol{margin:0 0 16px;padding-left:22px;}
.notfound{text-align:center;padding:60px 0;}

/* ---------- Home ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;}
.hero-bg{position:absolute;inset:0;
  background:
    radial-gradient(600px 300px at 80% -10%,rgba(22,214,230,.35),transparent),
    radial-gradient(500px 300px at 10% 110%,rgba(30,111,255,.35),transparent);}
.hero-inner{position:relative;padding:72px 0 64px;}
.hero-eyebrow{letter-spacing:3px;font-size:13px;color:var(--cyan);margin:0 0 14px;font-weight:600;}
.hero-title{font-size:42px;line-height:1.25;margin:0 0 18px;font-weight:800;letter-spacing:.5px;}
.hero-sub{font-size:17px;max-width:760px;color:#cfe0f5;margin:0 0 26px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px;}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;transition:.2s;}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 8px 22px rgba(22,214,230,.4);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;list-style:none;margin:0;padding:0;}
.hero-stats li{display:flex;flex-direction:column;}
.hero-stats strong{font-size:26px;color:var(--cyan);}
.hero-stats span{font-size:13px;color:#bcd1ec;max-width:240px;}

.section{padding:64px 0;}
.section-alt{background:var(--bg-alt);}
.section-title{font-size:30px;color:var(--navy);text-align:center;margin:0 0 10px;}
.section-lead{text-align:center;color:var(--ink-2);max-width:720px;margin:0 auto 36px;}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow);transition:.2s;}
.cap-card:hover{transform:translateY(-3px);border-color:var(--blue);}
.cap-card h3{margin:0 0 8px;color:var(--navy);font-size:18px;}
.cap-card p{margin:0;color:var(--ink-2);font-size:14.5px;}
.prod-cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.prod-cat-card{display:flex;flex-direction:column;gap:8px;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow);min-height:120px;transition:.2s;}
.prod-cat-card:hover{transform:translateY(-3px);border-color:var(--cyan);background:linear-gradient(135deg,#fff,rgba(22,214,230,.06));}
.prod-cat-name{font-size:19px;font-weight:700;color:var(--navy);}
.prod-cat-go{font-size:14px;color:var(--blue);}
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.art-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow);transition:.2s;}
.art-card:hover{transform:translateY(-3px);border-color:var(--blue);}
.art-cat{font-size:12px;color:var(--blue);background:rgba(30,111,255,.1);padding:2px 8px;border-radius:6px;align-self:flex-start;}
.art-title{font-size:18px;color:var(--navy);margin:6px 0 0;line-height:1.4;}
.art-sum{font-size:14px;color:var(--ink-2);margin:0;flex:1;line-height:1.6;}
.art-date{font-size:12px;color:#9aa7ba;}
.more-link{text-align:center;margin-top:24px;}
.section-cta{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;text-align:center;}
.cta-inner{padding:20px 0;}
.section-cta h2{font-size:28px;margin:0 0 12px;}
.section-cta p{max-width:640px;margin:0 auto 22px;color:#cfe0f5;}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#cfe0f5;padding:48px 0 20px;}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 12px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin:7px 0;}
.footer-col a{color:#bcd1ec;font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-desc{font-size:14px;color:#aebfd6;max-width:360px;margin:12px 0 0;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:16px;font-size:13px;color:#9fb3cf;}
.footer-note{color:#88a0c0;}

/* ---------- Floating capsule ---------- */
.floating-capsule{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:1200;
  display:flex;flex-direction:column;gap:10px;background:rgba(11,31,58,.92);backdrop-filter:blur(8px);
  padding:10px 8px;border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.3);}
.cap-btn{display:flex;flex-direction:column;align-items:center;gap:2px;width:46px;height:52px;
  border:0;background:transparent;color:#fff;cursor:pointer;border-radius:999px;transition:.2s;font-size:11px;}
.cap-btn:hover{background:rgba(255,255,255,.12);}
.cap-ico{font-size:18px;line-height:1;}
.cap-wechat:hover{color:var(--cyan);}

/* WeChat modal */
.wechat-modal{position:fixed;inset:0;z-index:2000;display:none;align-items:center;justify-content:center;}
.wechat-modal.open{display:flex;}
.wechat-backdrop{position:absolute;inset:0;background:rgba(5,12,24,.7);backdrop-filter:blur(3px);}
.wechat-card{position:relative;background:#fff;border-radius:16px;padding:18px;max-width:92vw;
  box-shadow:0 20px 60px rgba(0,0,0,.5);display:flex;flex-direction:column;align-items:center;}
.wechat-close{position:absolute;top:8px;right:12px;width:30px;height:30px;border:0;background:rgba(0,0,0,.06);
  border-radius:50%;font-size:20px;cursor:pointer;color:#333;line-height:1;}
.wechat-tip{font-size:14px;color:var(--ink-2);margin:0 0 12px;}
.wechat-img-wrap{display:flex;justify-content:center;}
.wechat-img{width:auto;height:auto;max-height:78vh;display:block;border-radius:8px;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .cap-grid,.art-grid{grid-template-columns:repeat(2,1fr);}
  .prod-cat-grid{grid-template-columns:repeat(3,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .nav-toggle{display:flex;}
  .site-nav{position:fixed;top:var(--header-h);left:0;right:0;background:var(--navy);
    flex-direction:column;align-items:stretch;gap:0;padding:10px 16px;display:none;max-height:calc(100vh - var(--header-h));overflow:auto;}
  .site-nav.open{display:flex;}
  .nav-item{width:100%;}
  .nav-link{padding:12px 8px;font-size:16px;justify-content:space-between;}
  /* 移动端：文章/产品分类默认折叠，点击展开 */
  .has-children .submenu{position:static;display:none;box-shadow:none;background:rgba(255,255,255,.04);padding:4px 0 4px 14px;min-width:0;}
  .has-children.open .submenu{display:flex;}
  .submenu a{color:#cfe0f5;padding:10px 8px;}
  .article-grid{grid-template-columns:1fr;}
  .toc-aside{position:static;max-height:none;margin-top:24px;}
  .list-layout{grid-template-columns:1fr;}
  .cat-side{position:static;}
  .list-items{grid-template-columns:1fr;}
  .cap-grid,.art-grid,.prod-cat-grid{grid-template-columns:1fr;}
  .hero-title{font-size:30px;}
  .footer-inner{grid-template-columns:1fr;}
  .floating-capsule{right:12px;}
}