/* ==========================================================
   speed.注塑机.中国 —— 全站样式（暗色科技风）
   版式契约：table.data / 裸 <details>（见 skeleton_contract.yaml）
   ========================================================== */
:root{
  --bg:#070c1a; --bg2:#0a1122; --panel:#0e1730; --panel2:#101c3a;
  --line:#1d2c4d; --line-soft:#16233f;
  --text:#e6eefb; --muted:#93a6c4;
  --accent:#22d3ee; --accent2:#2f6bff;
  --radius:14px;
  --container:1200px;
  --h2-inset:0px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  margin:0; background:
    radial-gradient(1200px 500px at 80% -10%, rgba(47,107,255,.18), transparent 60%),
    radial-gradient(900px 420px at 5% 10%, rgba(34,211,238,.10), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  line-height:1.75; font-size:16px;
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%; height:auto}
.container{max-width:var(--container); margin:0 auto; padding:0 24px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(7,12,26,.86); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{display:flex; align-items:center; gap:20px; min-height:68px}
.brand{display:flex; align-items:center; gap:10px; color:var(--text)}
.brand img{width:40px; height:40px}
.brand-text{display:flex; flex-direction:column; line-height:1.25}
.brand-text strong{font-size:16px}
.brand-text small{color:var(--muted); font-size:12px}
.site-nav{margin-left:auto; display:flex; align-items:center; gap:6px}
.nav-link{color:var(--text); padding:8px 12px; border-radius:8px; font-size:15px}
.nav-link:hover{background:var(--panel); text-decoration:none}
.nav-drop{position:relative}
.nav-drop-btn{
  background:none; border:0; color:var(--text); font-size:15px; cursor:pointer;
  padding:8px 12px; border-radius:8px; display:inline-flex; align-items:center; gap:6px;
  font-family:inherit;
}
.nav-drop-btn:hover{background:var(--panel)}
.caret{width:8px; height:8px; border-right:2px solid var(--muted); border-bottom:2px solid var(--muted); transform:rotate(45deg) translateY(-2px)}
.drop-panel{
  display:none; position:absolute; top:calc(100% + 6px); left:0; min-width:180px;
  background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:8px;
  box-shadow:0 14px 34px rgba(0,0,0,.45);
}
.nav-drop.open .drop-panel{display:block}
.drop-panel a{display:block; padding:8px 12px; border-radius:8px; color:var(--text); font-size:14px}
.drop-panel a:hover{background:var(--panel2); text-decoration:none}
.nav-toggle{display:none; margin-left:auto; background:none; border:1px solid var(--line); border-radius:8px; padding:9px; cursor:pointer}
.nav-toggle span{display:block; width:20px; height:2px; background:var(--text); margin:4px 0}

/* ---------- 首页 ---------- */
.hero{padding:84px 0 56px}
.hero-kicker{color:var(--accent); letter-spacing:.06em; font-size:14px; margin:0 0 14px}
.hero h1{font-size:clamp(28px,4.6vw,46px); line-height:1.3; margin:0 0 18px}
.hero-sub{color:var(--muted); max-width:760px; font-size:17px}
.hero-cta{display:flex; flex-wrap:wrap; gap:12px; margin:26px 0 34px}
.btn{
  display:inline-flex; align-items:center; gap:8px; cursor:pointer;
  border-radius:10px; padding:11px 22px; font-size:15px; border:1px solid transparent;
  font-family:inherit;
}
.btn-primary{background:linear-gradient(120deg,var(--accent2),var(--accent)); color:#04101f; font-weight:600}
.btn-primary:hover{text-decoration:none; filter:brightness(1.08)}
.btn-ghost{border-color:var(--line); color:var(--text); background:rgba(14,23,48,.6)}
.btn-ghost:hover{border-color:var(--accent); text-decoration:none}
.hero-stats{
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:0;
  border:1px solid var(--line); border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(14,23,48,.9),rgba(10,17,34,.9)); padding:18px;
}
.hero-stats dt{color:var(--muted); font-size:13px}
.hero-stats dd{margin:4px 0 0; font-size:20px; font-weight:700; color:var(--accent)}
.section{padding:56px 0}
.section-alt{background:var(--bg2); border-top:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft)}
.section h2{font-size:26px; margin:0 0 8px}
.section-sub{color:var(--muted); margin:0 0 26px}
.split-two{display:grid; grid-template-columns:1fr 1fr; gap:18px}
.panel{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); padding:22px}
.panel h3{margin:0 0 10px; font-size:19px}
.panel p{color:var(--muted); margin:0 0 12px}
.mini-list{margin:0; padding-left:18px}
.mini-list li{margin:6px 0}
.chip-row{display:flex; flex-wrap:wrap; gap:10px; list-style:none; padding:0; margin:0 0 14px}
.chip-row li{
  border:1px solid var(--line); background:var(--panel); border-radius:999px;
  padding:7px 16px; font-size:14px; color:var(--text);
}
.chip-row-soft li{background:transparent; color:var(--muted)}
.text-link{font-weight:600}
.cat-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-bottom:18px}
.cat-cell{
  display:flex; flex-direction:column; gap:6px; padding:18px;
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); color:var(--text);
}
.cat-cell:hover{border-color:var(--accent); text-decoration:none}
.cat-cell strong{font-size:17px; color:var(--accent)}
.cat-cell span{color:var(--muted); font-size:14px}
.cta-band{
  border-top:1px solid var(--line-soft);
  background:linear-gradient(90deg,rgba(47,107,255,.16),rgba(34,211,238,.10));
  padding:44px 0;
}
.cta-inner{display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap}
.cta-inner h2{margin:0 0 6px}
.cta-inner p{margin:0; color:var(--muted)}

/* ---------- 面包屑 [M18c++]:左缘经 --h2-inset 与正文 H2 对齐 ---------- */
.breadcrumb{padding:18px 0 2px; padding-left:var(--h2-inset,0px)}
.crumb-list{display:flex; flex-wrap:wrap; gap:6px; list-style:none; margin:0; padding:0; font-size:13px; color:var(--muted)}
.crumb-item + .crumb-item::before{content:"›"; margin-right:6px; color:var(--muted)}
.crumb-item a{color:var(--muted)}
.crumb-item a:hover{color:var(--accent)}

/* ---------- 详情布局（文章 / 产品） ---------- */
.article-layout{
  display:grid; grid-template-columns:minmax(0,760px) 240px; gap:32px;
  justify-content:center; align-items:start; padding-bottom:64px;
}
.art-col{min-width:0}
.art-col h1{font-size:30px; line-height:1.4; margin:8px 0 10px}
.art-meta{display:flex; gap:10px; align-items:center; margin-bottom:14px; font-size:13px; color:var(--muted)}
.tag-cat{background:rgba(34,211,238,.14); color:var(--accent); border:1px solid rgba(34,211,238,.35); border-radius:999px; padding:2px 12px}
.tag-text{background:var(--panel); border:1px solid var(--line); border-radius:999px; padding:2px 12px}
.summary-block{
  background:var(--panel); border:1px solid var(--line); border-left:3px solid var(--accent);
  border-radius:10px; padding:14px 18px; margin:0 0 22px;
}
.summary-block p{margin:6px 0}
.kw-line{color:var(--muted); font-size:14px}
.case-note{
  background:rgba(47,107,255,.10); border:1px solid rgba(47,107,255,.4);
  border-radius:10px; padding:12px 18px; margin:22px 0;
}
.case-note p{margin:0; color:var(--text)}

/* 正文排版 */
.art-body h2{font-size:23px; margin:34px 0 12px; line-height:1.5}
.art-body h3{font-size:18px; margin:24px 0 8px}
.art-body p{margin:0 0 14px; color:#d5e1f5}
.art-body ul,.art-body ol{margin:0 0 14px; padding-left:22px; color:#d5e1f5}
.art-body li{margin:6px 0}
.art-body blockquote{
  margin:16px 0; padding:12px 18px; border-left:3px solid var(--accent);
  background:var(--panel); border-radius:10px; color:var(--text);
}
.art-body blockquote p{margin:6px 0; color:var(--text)}
.art-body code{background:var(--panel2); border:1px solid var(--line); border-radius:6px; padding:1px 7px; font-size:14px}

/* 参数表（契约 table_class=data） */
table.data{
  width:100%; border-collapse:collapse; margin:16px 0 22px; font-size:14.5px;
  background:var(--panel); border-radius:10px; overflow:hidden;
}
table.data th,table.data td{border:1px solid var(--line); padding:10px 14px; text-align:left; vertical-align:top}
table.data th{background:var(--panel2); color:var(--accent); font-weight:600; white-space:nowrap}
table.data td{color:#d5e1f5}
table.data tr:hover td{background:rgba(34,211,238,.05)}

/* FAQ（契约 faq_dom=bare_details：裸 details，样式仅借容器作用域） */
.faq-block{margin:30px 0}
.faq-block h2{font-size:23px; margin:0 0 14px}
.faq-block details{border:1px solid var(--line); border-radius:10px; background:var(--panel); margin:10px 0; padding:0 16px}
.faq-block details[open]{border-color:rgba(34,211,238,.45)}
.faq-block summary{cursor:pointer; padding:13px 0; font-weight:600; list-style:none; position:relative; padding-right:28px}
.faq-block summary::-webkit-details-marker{display:none}
.faq-block summary::after{
  content:"+"; position:absolute; right:2px; top:50%; transform:translateY(-50%);
  color:var(--accent); font-size:18px;
}
.faq-block details[open] summary::after{content:"−"}
.faq-block details p{margin:0 0 14px; color:#d5e1f5}

/* TOC 悬浮 [M1'']:sticky，禁 fixed */
.toc-aside{position:sticky; top:80px; max-height:calc(100vh - 100px); overflow-y:auto}
#toc{border:1px solid var(--line); border-radius:10px; background:var(--panel); padding:14px 16px}
.toc-title{margin:0 0 8px; color:var(--accent); font-weight:700; font-size:14px}
#toc ul{list-style:none; margin:0; padding:0}
#toc li{margin:7px 0}
#toc a{color:var(--muted); font-size:13.5px; line-height:1.5; display:block}
#toc a:hover{color:var(--accent)}

/* ---------- 列表页 [M1']:左列垂直分类，禁卡片网格 ---------- */
.list-layout{
  display:grid; grid-template-columns:240px minmax(0,1fr); gap:32px;
  align-items:start; padding-bottom:64px;
}
.cat-side{position:sticky; top:80px}
.side-title{font-size:15px; color:var(--muted); margin:18px 0 10px; padding-left:12px}
.category-list{list-style:none; margin:0; padding:0}
.category-list li{margin:2px 0}
.category-list a{
  display:block; padding:10px 14px; border-radius:10px; color:var(--text);
  border:1px solid transparent; font-size:15px;
}
.category-list a:hover{background:var(--panel); text-decoration:none}
.category-list a.active{background:linear-gradient(90deg,rgba(47,107,255,.22),rgba(34,211,238,.10)); border-color:rgba(34,211,238,.4); color:var(--accent); font-weight:600}
.cat-content{min-width:0}
.cat-content h2{font-size:24px; margin:16px 0 8px}
.cat-desc{color:var(--muted); margin:0 0 22px}
.post-list{list-style:none; margin:0; padding:0}
.post-list li{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px 20px; margin:12px 0;
}
.post-list li a{font-size:17px; font-weight:600; color:var(--text)}
.post-list li a:hover{color:var(--accent)}
.post-list li p{margin:8px 0 0; color:var(--muted); font-size:14.5px}

/* ---------- 叶子页 ---------- */
.page-wrap{max-width:960px; padding-bottom:64px}
.page-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:48px; margin:18px 0 24px;
}
.page-card h1{margin:0 0 20px; font-size:28px}
.page-plain{max-width:960px; padding-bottom:64px; padding-top:36px}
.lead{color:var(--muted)}
.archive-list{list-style:none; padding:0; margin:0 0 30px}
.archive-list li{padding:9px 0; border-bottom:1px dashed var(--line-soft)}

/* ---------- 悬浮工具胶囊 ---------- */
.float-capsule{
  position:fixed; right:18px; top:50%; transform:translateY(-50%); z-index:70;
  display:flex; flex-direction:column; gap:8px;
}
.capsule-btn{
  display:flex; align-items:center; gap:7px; cursor:pointer;
  border-radius:999px; border:1px solid var(--line);
  background:rgba(14,23,48,.92); color:var(--text);
  padding:9px 14px; font-size:13.5px; font-family:inherit;
  box-shadow:0 8px 22px rgba(0,0,0,.4);
}
.capsule-btn:hover{border-color:var(--accent)}
.capsule-accent{border-color:rgba(34,211,238,.55); color:var(--accent)}

/* ---------- 企业微信名片弹层（300×500，原尺寸不压缩，MD5 防缓存） ---------- */
.card-modal{position:fixed; inset:0; z-index:90; display:flex; align-items:center; justify-content:center}
.card-modal[hidden]{display:none}
.card-backdrop{position:absolute; inset:0; background:rgba(3,7,16,.78); backdrop-filter:blur(4px)}
.card-box{
  position:relative; background:var(--panel); border:1px solid var(--line);
  border-radius:16px; padding:14px; box-shadow:0 24px 60px rgba(0,0,0,.6);
}
.card-img-frame{width:300px; height:500px; display:flex; align-items:center; justify-content:center; overflow:hidden; border-radius:10px; background:#fff}
.card-img-frame img{max-width:100%; max-height:100%; width:auto; height:auto; object-fit:contain; display:block}
.card-tip{margin:10px 0 0; text-align:center; color:var(--muted); font-size:13px}
.card-close{
  position:absolute; top:-14px; right:-14px; width:34px; height:34px; border-radius:50%;
  border:1px solid var(--line); background:var(--panel2); color:var(--text);
  font-size:18px; cursor:pointer; line-height:1;
}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line-soft); background:var(--bg2); padding:36px 0 26px; margin-top:40px}
.footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:24px}
.footer-brand{font-size:17px; margin:0 0 6px}
.footer-head{color:var(--accent); font-size:14px; margin:0 0 8px}
.site-footer p{margin:4px 0; font-size:14px}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--accent)}
.footer-muted{color:var(--muted)}
.footer-base{border-top:1px solid var(--line-soft); margin-top:26px; padding-top:16px}
.footer-base p{color:var(--muted); font-size:13px}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc-aside{display:none}
}
@media (max-width:900px){
  .split-two,.cat-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .list-layout{grid-template-columns:1fr}
  .cat-side{position:static}
  .category-list{display:flex; flex-wrap:wrap; gap:8px}
  .category-list li{margin:0}
  .page-card{padding:24px}
  .float-capsule{right:10px}
}
@media (max-width:900px){
  .nav-toggle{display:block}
  .site-nav{
    display:none; position:absolute; top:100%; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:2px;
    background:var(--bg2); border-bottom:1px solid var(--line); padding:10px 18px 16px;
  }
  .site-nav.open{display:flex}
  .nav-link{padding:12px 8px; border-radius:8px}
  .nav-drop-btn{width:100%; justify-content:space-between; padding:12px 8px}
  .drop-panel{position:static; display:none; box-shadow:none; border:0; background:transparent; padding:2px 0 8px 14px}
  .nav-drop.open .drop-panel{display:block}
}