/* 汽车注塑模具.中国 · 车规量产中台 —— 原创高端科技风样式 */
:root{
  --ink:#0b0e14;
  --paper:#ffffff;
  --bg:#f5f7fa;
  --bg-alt:#eef2f7;
  --line:#e3e8f0;
  --text:#1b2330;
  --muted:#5b6675;
  --brand:#2f5bff;
  --brand-2:#12c2c9;
  --amber:#ffb020;
  --radius:14px;
  --maxw:1180px;
  --h2-inset:0px;
  --shadow:0 6px 24px rgba(20,33,61,.08);
  --shadow-lg:0 18px 50px rgba(20,33,61,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
img{max-width:100%}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}
p{margin:0 0 1em}

/* ── 顶部固定导航 ── */
.apm-header{position:sticky;top:0;z-index:50;background:rgba(11,14,20,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.apm-header-inner{max-width:var(--maxw);margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:18px}
.apm-brand{display:flex;align-items:center;gap:10px;color:#fff}
.apm-brand img{border-radius:8px;background:#fff;padding:2px}
.apm-brand-name{font-weight:800;font-size:17px;letter-spacing:.3px}
.apm-brand-tag{font-size:12px;color:#9fb0c8;padding-left:10px;margin-left:4px;border-left:1px solid rgba(255,255,255,.18)}
.apm-nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.apm-nav a{color:#c7d2e2;padding:8px 12px;border-radius:9px;font-size:14.5px;transition:.18s}
.apm-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.apm-nav-toggle{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:8px;font-size:18px;padding:6px 12px;cursor:pointer}

/* ── 主壳 / 面包屑 / 内容 ── */
.apm-shell{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.apm-crumbs{font-size:13px;color:var(--muted);padding:18px 0 6px;display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.apm-crumbs a{color:var(--muted)}
.apm-crumbs a:hover{color:var(--brand)}
.apm-crumbs .sep{color:#b7c0cd;margin:0 2px}
.apm-crumbs .cur{color:var(--text);font-weight:600}
.apm-content{padding-bottom:40px}

/* ── 文章 / 产品布局 ── */
.apm-h1{font-size:30px;margin:6px 0 18px;letter-spacing:.2px}
.apm-meta{display:flex;flex-wrap:wrap;gap:16px;margin:0 0 18px;font-size:12.5px;color:var(--muted)}
.apm-meta span{position:relative;padding-left:12px}
.apm-meta span:first-child{padding-left:0}
.apm-meta span:not(:first-child)::before{content:"";position:absolute;left:0;top:50%;width:1px;height:11px;background:var(--line);transform:translateY(-50%)}
.apm-summary{background:var(--bg-alt);border-left:3px solid var(--accent, #2b6cb0);border-radius:8px;padding:14px 16px;margin:0 0 22px;font-size:15px;line-height:1.75;color:var(--ink)}
.apm-layout{display:grid;grid-template-columns:minmax(0,1fr) 248px;gap:40px;align-items:start}
.apm-main{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px;box-shadow:var(--shadow);min-width:0}
.apm-main h2{font-size:22px;margin:34px 0 14px;padding-bottom:8px;border-bottom:2px solid var(--bg-alt)}
.apm-main h2:first-child{margin-top:6px}
.apm-main h3{font-size:18px;margin:24px 0 10px}
.apm-main p{color:#2a3442}
.apm-main ul{margin:0 0 1em;padding-left:22px}
.apm-main li{margin:6px 0}
.apm-main strong{color:var(--ink)}

/* 摘要块 / 结论块 / 实践经验 callout */
blockquote.callout{background:linear-gradient(180deg,#f3f7ff,#eef3ff);border-left:4px solid var(--brand);border-radius:10px;padding:14px 18px;margin:18px 0;color:#243049}
blockquote.callout p{margin:0}
blockquote.case{background:#fff7e8;border-left:4px solid var(--amber);border-radius:10px;padding:12px 16px;margin:18px 0;color:#5a4310}

/* 表格 */
table.data{border-collapse:collapse;width:100%;margin:16px 0;font-size:14.5px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
table.data th{background:var(--bg-alt);color:var(--ink);text-align:left;padding:11px 14px;font-weight:700;border-bottom:1px solid var(--line)}
table.data td{padding:10px 14px;border-bottom:1px solid var(--line);color:#2a3442}
table.data tr:last-child td{border-bottom:none}

/* FAQ 裸 details */
details{border:1px solid var(--line);border-radius:10px;margin:10px 0;background:#fff;overflow:hidden}
details summary{cursor:pointer;padding:13px 16px;font-weight:600;color:var(--ink);list-style:none;position:relative;padding-left:42px}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"＋";position:absolute;left:16px;top:11px;color:var(--brand);font-weight:800;font-size:18px}
details[open] summary::before{content:"－"}
details p{margin:0;padding:0 16px 14px 42px;color:#2a3442}

/* 标签 */
.apm-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px}
.tag-text{background:var(--bg-alt);color:var(--muted);font-size:12.5px;padding:4px 10px;border-radius:20px}

/* TOC 悬浮 */
.toc-aside{position:sticky;top:84px;max-height:calc(100vh - 110px);overflow-y:auto}
.apm-toc-inner{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:16px 14px;box-shadow:var(--shadow)}
.apm-toc-title{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;font-weight:700}
.apm-toc-inner ul{list-style:none;margin:0;padding:0}
.apm-toc-inner li{margin:2px 0}
.apm-toc-inner li a{display:block;padding:6px 10px;border-radius:8px;font-size:13.5px;color:var(--muted);border-left:2px solid transparent}
.apm-toc-inner li a:hover{background:var(--bg-alt);color:var(--brand);border-left-color:var(--brand)}
.apm-toc-inner li.lvl-3 a{padding-left:22px;font-size:13px}

/* ── 列表 / 分类页 ── */
.apm-list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;align-items:start}
.apm-cat-side{position:sticky;top:84px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.apm-cat-title{font-size:13px;color:var(--muted);letter-spacing:1px;text-transform:uppercase;margin-bottom:12px;font-weight:700}
.category-list{list-style:none;margin:0;padding:0}
.category-list li{margin:2px 0}
.category-list a{display:flex;justify-content:space-between;align-items:center;padding:9px 12px;border-radius:9px;color:var(--text);font-size:14.5px}
.category-list a:hover{background:var(--bg-alt)}
.category-list li.active a{background:var(--ink);color:#fff}
.apm-cat-count{font-size:12px;color:var(--muted);background:var(--bg-alt);border-radius:20px;padding:1px 8px}
.category-list li.active .apm-cat-count{background:rgba(255,255,255,.2);color:#fff}
.apm-cat-content{min-width:0}
.apm-cat-desc{color:var(--muted);margin-bottom:18px}
.apm-list-items{display:flex;flex-direction:column;gap:12px}
.apm-list-item{display:block;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;transition:.18s;box-shadow:var(--shadow)}
.apm-list-item:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.apm-list-meta{margin-bottom:6px}
.apm-list-cat{font-size:12px;color:var(--brand);background:#eef3ff;padding:2px 9px;border-radius:20px}
.apm-list-name{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px}
.apm-list-sum{color:var(--muted);font-size:14px;margin:0}
.apm-empty{color:var(--muted)}

/* ── 页面卡片 ── */
.apm-page-doc .apm-h1{font-size:30px}
.apm-page-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:48px;box-shadow:var(--shadow)}
.apm-page-card h2{font-size:22px;margin:30px 0 12px;border-bottom:2px solid var(--bg-alt);padding-bottom:8px}
.apm-page-card h3{font-size:18px;margin:22px 0 10px}

/* ── 首页 ── */
.apm-hero{position:relative;background:radial-gradient(1200px 500px at 70% -10%,rgba(47,91,255,.35),transparent),linear-gradient(180deg,#0b0e14,#10141d);color:#fff;overflow:hidden}
.apm-hero-glow{position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 30%,rgba(18,194,201,.25),transparent);pointer-events:none}
.apm-hero-inner{max-width:var(--maxw);margin:0 auto;padding:84px 24px 72px;position:relative}
.apm-hero-kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:#9fe9ec;background:rgba(18,194,201,.12);border:1px solid rgba(18,194,201,.3);padding:6px 14px;border-radius:30px;margin-bottom:20px}
.apm-hero-title{font-size:46px;line-height:1.15;margin:0 0 18px;background:linear-gradient(90deg,#fff,#bcd0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.apm-hero-sub{font-size:17px;color:#b8c4d6;max-width:760px;margin:0 0 28px}
.apm-hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.apm-btn{display:inline-block;padding:13px 26px;border-radius:11px;font-weight:700;font-size:15px;transition:.18s}
.apm-btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 30px rgba(47,91,255,.4)}
.apm-btn-primary:hover{background:#1f47e6;transform:translateY(-2px)}
.apm-btn-ghost{border:1px solid rgba(255,255,255,.28);color:#fff}
.apm-btn-ghost:hover{background:rgba(255,255,255,.08)}
.apm-hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.apm-hero-stats div{display:flex;flex-direction:column}
.apm-hero-stats b{font-size:26px;color:#fff}
.apm-hero-stats span{font-size:13px;color:#90a0b8}

.apm-section{max-width:var(--maxw);margin:0 auto;padding:60px 24px}
.apm-section-alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.apm-section-head{margin-bottom:30px}
.apm-section-head h2{font-size:28px;margin:0 0 8px}
.apm-section-head p{color:var(--muted);margin:0;max-width:720px}
.apm-more{float:right;color:var(--brand);font-weight:600}

.apm-cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.apm-cap-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.18s;box-shadow:var(--shadow)}
.apm-cap-card:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.apm-cap-ico{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px}
.apm-cap-name{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px}
.apm-cap-link{font-size:13px;color:var(--brand);font-weight:600}

.apm-view-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.apm-view-card{display:flex;flex-direction:column;gap:4px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px 20px;transition:.18s}
.apm-view-card:hover{border-color:var(--brand-2);background:#eafafa}
.apm-view-name{font-size:17px;font-weight:700;color:var(--ink)}
.apm-view-url{font-size:12.5px;color:var(--muted);font-family:ui-monospace,Menlo,monospace}

.apm-bound-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.apm-bound{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow)}
.apm-bound b{display:block;font-size:16px;color:var(--brand);margin-bottom:6px}
.apm-bound span{color:var(--muted);font-size:14px}

.apm-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.apm-doc-card{display:flex;flex-direction:column;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:.18s;box-shadow:var(--shadow)}
.apm-doc-card:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.apm-doc-cat{font-size:12px;color:var(--brand);background:#eef3ff;padding:2px 9px;border-radius:20px;align-self:flex-start}
.apm-doc-title{font-size:18px;font-weight:700;color:var(--ink)}
.apm-doc-sum{color:var(--muted);font-size:14px;margin:0}

.apm-cta{background:linear-gradient(135deg,#0b0e14,#16203a);color:#fff;margin-top:20px}
.apm-cta-inner{max-width:var(--maxw);margin:0 auto;padding:56px 24px;text-align:center}
.apm-cta-inner h2{color:#fff;font-size:28px;margin:0 0 10px}
.apm-cta-inner p{color:#aab6c8;max-width:620px;margin:0 auto 22px}

/* ── 归档 / 404 ── */
.apm-archive{max-width:var(--maxw);margin:0 auto;padding:10px 0 30px}
.apm-archive-sec{margin-bottom:30px}
.apm-archive-cat{font-size:18px;color:var(--brand);margin:16px 0 8px}
.apm-archive-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.apm-archive-list a{display:block;padding:10px 14px;background:var(--paper);border:1px solid var(--line);border-radius:10px;font-size:14.5px}
.apm-archive-list a:hover{border-color:var(--brand)}
.apm-error{max-width:640px;margin:60px auto;text-align:center}
.apm-error-code{font-size:80px;font-weight:800;color:var(--brand);line-height:1}
.apm-error h1{margin:10px 0}
.apm-error p{color:var(--muted)}

/* ── 页脚 ── */
.apm-footer{background:var(--ink);color:#aab6c8;margin-top:40px}
.apm-footer-inner{max-width:var(--maxw);margin:0 auto;padding:46px 24px 24px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.apm-footer-brand{color:#fff;font-weight:800;font-size:17px;margin-bottom:10px}
.apm-footer-desc{font-size:13.5px;line-height:1.7;margin:0}
.apm-footer-col h4{color:#fff;font-size:14px;margin:0 0 12px}
.apm-footer-col a{display:block;color:#9fb0c8;font-size:14px;padding:4px 0}
.apm-footer-col a:hover{color:#fff}
.apm-footer-bar{max-width:var(--maxw);margin:0 auto;padding:16px 24px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;font-size:12.5px;color:#7e8da0;flex-wrap:wrap;gap:8px}

/* ── 悬浮胶囊 ── */
.apm-capsule{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:60;display:flex;flex-direction:column;gap:12px}
.apm-cap{width:56px;height:56px;border-radius:28px;border:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--shadow-lg);transition:.18s}
.apm-cap:hover{transform:scale(1.06)}
.apm-cap-wx{background:linear-gradient(135deg,#07c160,#0aa15a)}
.apm-modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center}
.apm-modal[hidden]{display:none}
.apm-modal-mask{position:absolute;inset:0;background:rgba(7,11,18,.6);backdrop-filter:blur(3px)}
.apm-modal-card{position:relative;background:#fff;border-radius:14px;padding:14px;box-shadow:var(--shadow-lg)}
.apm-modal-card img{display:block;border-radius:8px;width:300px;height:500px;object-fit:contain}
.apm-modal-close{position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;border:none;background:#fff;color:var(--ink);font-size:20px;cursor:pointer;box-shadow:var(--shadow)}

/* ── 响应式 ── */
@media (max-width:980px){
  .apm-layout{grid-template-columns:1fr}
  .toc-aside{position:static;max-height:none}
  .apm-list-layout{grid-template-columns:1fr}
  .apm-cat-side{position:static}
  .apm-cap-grid{grid-template-columns:repeat(2,1fr)}
  .apm-view-grid,.apm-bound-grid,.apm-card-grid,.apm-archive-list{grid-template-columns:1fr}
  .apm-footer-inner{grid-template-columns:1fr 1fr}
  .apm-hero-title{font-size:34px}
}
@media (max-width:680px){
  .apm-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--ink);padding:10px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
  .apm-nav.open{display:flex}
  .apm-nav-toggle{display:block}
  .apm-brand-tag{display:none}
  .apm-main{padding:22px 18px}
  .apm-page-card{padding:24px 18px}
  .apm-footer-inner{grid-template-columns:1fr}
  .apm-capsule{right:12px}
  .apm-cap{width:48px;height:48px}
  .apm-hero-title{font-size:28px}
}