/* ============================================================
   北京亿创弘盛科技有限公司 · 官网子页组件样式
   仅子页引入（index.html 不需要）。依赖 assets/site.css 里的设计变量。
   ============================================================ */

/* ---------- 1. 子页首屏（面包屑 + H1 + 导语 + 行动按钮） ---------- */
.page-hero{
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-mid) 100%);
  padding-top:52px;padding-bottom:76px;
  border-bottom:1px solid var(--line-dark);
}
.page-hero .wrap{display:flex;flex-direction:column;gap:20px}

.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:var(--fs-xs);color:var(--t-on-dark)}
.crumbs a{color:var(--t-on-dark);transition:color .18s ease}
.crumbs a:hover{color:var(--cyan)}
.crumbs em{font-style:normal;color:#fff}
.crumbs i{font-style:normal;color:rgba(255,255,255,.28)}

.page-title{
  font-size:clamp(28px,3.4vw,50px);font-weight:700;color:#fff;
  line-height:1.22;letter-spacing:-.025em;max-width:900px;
}
.page-title em{
  font-style:normal;
  background-image:var(--grad-title);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
@supports not ((-webkit-background-clip:text) or (background-clip:text)){
  .page-title em{color:var(--cyan)}
}
.page-lead{font-size:var(--fs-lead);line-height:1.75;color:var(--t-on-dark-soft);max-width:760px}
.page-ctas{display:flex;flex-wrap:wrap;gap:16px;margin-top:6px}

/* 首屏右侧缩略图（可选） */
.page-hero-media{display:flex;align-items:center;gap:64px}
.page-hero-media .page-hero-text{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:20px}
.page-hero-media figure{
  flex:0 0 440px;width:440px;height:290px;margin:0;
  border-radius:16px;overflow:hidden;border:1px solid var(--line-card);
  box-shadow:0 16px 40px rgba(0,0,0,.35);
}
.page-hero-media figure img{width:100%;height:100%;object-fit:cover}

/* ---------- 2. 长文正文（prose） ---------- */
.prose{display:flex;flex-direction:column;gap:18px;max-width:900px}
.prose h2{
  font-size:var(--fs-h2);font-weight:700;line-height:1.3;letter-spacing:-.02em;
  margin-top:14px;
}
.prose h3{font-size:var(--fs-h3);font-weight:700;line-height:1.38;letter-spacing:-.01em;margin-top:8px}
.on-light .prose h2,.on-light .prose h3{color:var(--t-head-light)}
.on-dark .prose h2,.on-dark .prose h3{color:#fff}
.prose p{font-size:var(--fs-body);line-height:1.85}
.on-light .prose p{color:var(--t-on-light)}
.on-dark .prose p{color:var(--t-on-dark)}
.prose strong{font-weight:600}
.on-light .prose strong{color:var(--t-head-light)}
.on-dark .prose strong{color:#fff}
.prose ul{display:flex;flex-direction:column;gap:10px}
.prose li{position:relative;padding-left:20px;font-size:var(--fs-body);line-height:1.8}
.on-light .prose li{color:var(--t-on-light)}
.on-dark .prose li{color:var(--t-on-dark)}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
}
.prose a{color:var(--cyan-deep);font-weight:600;border-bottom:1px solid rgba(30,91,142,.28)}
.prose a:hover{color:var(--navy);border-bottom-color:var(--navy)}

/* 区块小标题（带竖条） */
.blk-head{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.blk-head .sec-bar{flex:none;width:4px;height:clamp(18px,1.7vw,26px);background:var(--cyan);border-radius:2px}
.blk-head h2{font-size:var(--fs-h2);font-weight:700;line-height:1.3;letter-spacing:-.02em;margin:0}
.on-light .blk-head h2{color:var(--t-head-light)}
.on-dark .blk-head h2{color:#fff}

/* ---------- 3. 参数表 ---------- */
.spec-wrap{width:100%;overflow-x:auto;border-radius:var(--radius)}
.spec-table{
  width:100%;border-collapse:collapse;min-width:560px;
  background:#fff;border-radius:var(--radius);overflow:hidden;
  box-shadow:0 8px 24px rgba(10,32,57,.06);
  font-size:var(--fs-sm);
}
.spec-table caption{
  caption-side:top;text-align:left;padding:0 0 12px;
  font-size:var(--fs-sm);font-weight:600;color:var(--cyan-deep);
}
.spec-table th,.spec-table td{
  padding:14px 18px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line-light);
}
.spec-table thead th{
  background:var(--light);color:var(--t-head-light);
  font-weight:600;font-size:var(--fs-xs);letter-spacing:.02em;white-space:nowrap;
}
.spec-table tbody th{
  color:var(--t-head-light);font-weight:600;white-space:nowrap;
  background:#FBFDFF;width:26%;
}
.spec-table tbody td{color:var(--t-on-light)}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}

/* ---------- 4. 要点列表（带序号，浅底白卡内） ---------- */
.point-list{display:flex;flex-direction:column;gap:18px}
.point{display:flex;gap:16px;align-items:flex-start}
.point-num{
  flex:none;width:34px;height:34px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  background:rgba(53,208,255,.14);color:var(--cyan-deep);
  border:1px solid rgba(53,208,255,.42);
}
.on-dark .point-num{background:rgba(53,208,255,.1);color:var(--cyan);border-color:rgba(53,208,255,.4)}
.point-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.point-title{font-size:var(--fs-h3);font-weight:700;line-height:1.35}
.on-light .point-title{color:var(--t-head-light)}
.on-dark .point-title{color:#fff}
.point-desc{font-size:var(--fs-sm);line-height:1.75}
.on-light .point-desc{color:var(--t-on-light)}
.on-dark .point-desc{color:var(--t-on-dark)}

/* ---------- 5. 图文左右分栏 ---------- */
.split{display:flex;align-items:center;gap:56px}
.split.flip{flex-direction:row-reverse}
.split-media{
  flex:0 0 44%;width:44%;height:300px;margin:0;
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-light);background:#0d2946;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-text{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:16px}

/* ---------- 6. FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq details{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:rgba(53,208,255,.55);box-shadow:0 8px 24px rgba(10,32,57,.07)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
  font-size:var(--fs-body);font-weight:600;color:var(--t-head-light);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:none;width:10px;height:10px;
  border-right:2px solid var(--cyan-deep);border-bottom:2px solid var(--cyan-deep);
  transform:rotate(45deg);transition:transform .22s ease;margin-top:-4px;
}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq .faq-a{padding:0 22px 20px;font-size:var(--fs-sm);line-height:1.8;color:var(--t-on-light)}

/* ---------- 7. 相关页面卡片 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.rel-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius);
  padding:22px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(10,32,57,.1);border-color:#BFD6E8}
.rel-card .rel-kicker{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--cyan-deep)}
.rel-card .rel-title{font-size:var(--fs-h3);font-weight:700;color:var(--t-head-light);line-height:1.35}
.rel-card .rel-desc{font-size:var(--fs-xs);line-height:1.7;color:var(--t-on-light)}
.rel-card .rel-go{margin-top:auto;padding-top:8px;font-size:var(--fs-xs);font-weight:600;color:var(--cyan-deep)}

/* ---------- 8. 底部行动条 ---------- */
.cta-band{
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-cta) 100%);
  border-radius:18px;padding:clamp(28px,3.4vw,44px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band .band-text{display:flex;flex-direction:column;gap:8px;min-width:260px}
.cta-band h2{font-size:clamp(20px,2.1vw,30px);font-weight:700;color:#fff;line-height:1.3;letter-spacing:-.02em}
.cta-band p{font-size:var(--fs-sm);color:var(--t-on-dark);line-height:1.7}
.cta-band .band-acts{display:flex;gap:14px;flex-wrap:wrap;flex:none}

/* ---------- 9. 客户 logo 网格（案例页用，比首页略大） ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line-light);border-radius:var(--radius);
  overflow:hidden;background:#fff;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(10,32,57,.1);border-color:#BFD6E8}
.case-logo{
  aspect-ratio:480/200;display:flex;align-items:center;justify-content:center;
  padding:22px;background:#fff;border-bottom:1px solid var(--line-light);
}
.case-logo img{max-width:100%;max-height:100%;object-fit:contain}
.case-body{display:flex;flex-direction:column;gap:6px;padding:16px 18px 18px}
.case-name{font-size:var(--fs-sm);font-weight:700;color:var(--t-head-light)}
.case-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--cyan-deep)}
.case-desc{font-size:var(--fs-xs);line-height:1.7;color:var(--t-on-light)}

/* ---------- 10. 分类小标题（案例页分组） ---------- */
.group-head{
  display:flex;align-items:center;gap:14px;
  font-size:var(--fs-h3);font-weight:700;color:var(--t-head-light);
  padding-bottom:14px;border-bottom:1px solid var(--line-light);
}
.group-head span{font-family:var(--font-mono);font-size:var(--fs-mono);color:var(--cyan-deep);font-weight:600}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1100px){
  .page-hero-media{gap:40px}
  .page-hero-media figure{flex:0 0 340px;width:340px;height:230px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .page-hero-media{flex-direction:column;align-items:stretch;gap:36px}
  .page-hero-media figure{flex:none;width:100%;height:0;padding-bottom:58%;position:relative}
  .page-hero-media figure img{position:absolute;inset:0;width:100%;height:100%}
  .split,.split.flip{flex-direction:column;align-items:stretch;gap:28px}
  .split-media{flex:none;width:100%;height:0;padding-bottom:56%;position:relative}
  .split-media img{position:absolute;inset:0;width:100%;height:100%}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media (max-width:680px){
  .page-hero{padding-top:34px;padding-bottom:52px}
  .rel-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .spec-table th,.spec-table td{padding:12px 14px}
  .faq summary{padding:15px 18px}
  .faq .faq-a{padding:0 18px 18px}
}