/* 精密冲压.中国 —— 全站样式（V6.0 骨架契约：table.data / 裸 details / toc sticky / 面包屑对齐） */
:root {
  --nav-h: 64px;
  --h2-inset: 16px;      /* 文章 / 产品 / 列表布局：面包屑与 H2 左缘对齐 */
  --ink: #17233b;
  --ink-soft: #46536b;
  --line: #e3e8f2;
  --bg: #f5f7fb;
  --card: #ffffff;
  --brand: #0c3c82;
  --brand-deep: #08295c;
  --accent: #f0b428;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.75; padding-top: var(--nav-h);
}
img { max-width: 100%; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ── 顶部导航 ── */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 60; background: rgba(255,255,255,.96); box-shadow: 0 1px 0 var(--line); backdrop-filter: blur(6px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name { font-size: 19px; font-weight: 700; color: var(--brand-deep); }
.brand-dot { color: var(--accent); }
.site-nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.site-nav a { color: var(--ink); font-size: 15px; font-weight: 500; }
.site-nav a:hover { color: var(--brand); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--brand-deep); margin: 5px 0; border-radius: 2px; }

/* ── 面包屑（V7.0 [M18c++]：位于布局容器内容列内，padding-left 与 H2 文字左缘严格对齐）── */
.breadcrumb { padding: 18px 0 4px calc(36px + var(--h2-inset)); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; font-size: 13px; color: var(--ink-soft); }
.breadcrumb li + li::before { content: "›"; margin-right: 6px; color: #9aa7bd; }
.breadcrumb a { color: var(--ink-soft); }

/* ── 详情布局（文章 / 产品）── */
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 36px; align-items: start; padding: 8px 0 48px; }
.detail-main { min-width: 0; }
.content-inner { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 36px 36px calc(36px + var(--h2-inset)); }
.content-inner h1 { font-size: 27px; line-height: 1.4; margin: 0 0 10px; }
.content-inner h2 { font-size: 21px; margin: 34px 0 12px; }
.content-inner h2::after { content: ""; display: block; width: 46px; height: 4px; background: var(--accent); border-radius: 2px; margin-top: 6px; }
.content-inner h3 { font-size: 17px; margin: 24px 0 8px; }
.content-inner p { margin: 10px 0; color: var(--ink-soft); }
.content-inner ul, .content-inner ol { color: var(--ink-soft); padding-left: 22px; }
.article-meta { display: flex; gap: 14px; align-items: center; font-size: 13px; color: #7d8aa3; margin: 0 0 6px; }
.meta-cat a { color: var(--brand); }
.meta-status { background: #eaf2ff; color: var(--brand); border-radius: 999px; padding: 1px 10px; font-size: 12px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 18px; }
.tag-text { background: #eef2f9; border: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; border-radius: 999px; padding: 2px 12px; }

/* 表格（table_class: data） */
.table-scroll { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; margin: 14px 0; background: var(--card); }
table.data th, table.data td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; color: var(--ink-soft); }
table.data th { background: #eef3fb; color: var(--brand-deep); white-space: nowrap; }
table.data tr:nth-child(even) td { background: #fafbfe; }
.table-note { font-size: 13px; color: #7d8aa3; }

/* 结论 / 引用 / 实践经验 */
blockquote.conclusion { margin: 14px 0; padding: 12px 16px; background: #f2f7ff; border-left: 4px solid var(--brand); border-radius: 8px; color: var(--ink); }
.callout.practice { margin: 22px 0 0; padding: 14px 16px; background: #fdf7e8; border: 1px solid #f0e0b0; border-radius: 10px; color: #6b5312; }

/* FAQ（裸 details） */
details { border: 1px solid var(--line); border-radius: 10px; background: var(--card); margin: 8px 0; padding: 0 14px; }
details[open] { border-color: #c6d6f0; }
details summary { cursor: pointer; font-weight: 600; padding: 10px 0; color: var(--ink); }
details p { margin: 0 0 10px; color: var(--ink-soft); }
.faq, .related, .param-section, .scene-section { margin-top: 8px; }
.related-list, .scene-list { color: var(--ink-soft); }
.related-why { color: #7d8aa3; font-size: 13px; }

/* TOC（[M1'']: sticky，禁 fixed） */
.toc-aside { position: sticky; top: calc(var(--nav-h) + 16px); max-height: calc(100vh - 100px); overflow-y: auto; }
.toc-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.toc-title { margin: 0 0 8px; font-weight: 700; font-size: 14px; color: var(--brand-deep); }
#toc { list-style: none; margin: 0; padding: 0; font-size: 13px; }
#toc li { margin: 4px 0; }
#toc a { color: var(--ink-soft); display: block; }

/* ── 列表布局（[M1']：左列表，禁卡片网格）── */
.list-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 32px; align-items: start; padding: 0 0 48px; }
.cat-toggle { display: none; width: 100%; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; font-size: 14px; font-weight: 600; color: var(--brand-deep); cursor: pointer; }
.cat-panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.category-list { list-style: none; margin: 0; padding: 0; }
.category-list li { margin: 2px 0; }
.category-list a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--ink); font-size: 14px; }
.category-list a:hover { background: #eef3fb; text-decoration: none; }
.category-list a.active { background: var(--brand); color: #fff; }
.cat-faq { margin-top: 14px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.cat-faq-title { font-weight: 700; font-size: 13px; color: var(--brand-deep); margin: 0 0 6px; }
.cat-content .content-inner h1 { font-size: 24px; }
.cat-desc { color: var(--ink-soft); }
.item-list { list-style: none; margin: 0; padding: 0; }
.item-row { border-top: 1px solid var(--line); padding: 18px 0; }
.item-row:first-child { border-top: 0; }
.item-row h2 { font-size: 18px; margin: 0 0 6px; }
.item-row h2::after { display: none; }
.item-summary { margin: 0 0 6px; color: var(--ink-soft); font-size: 14px; }
.item-cat { margin: 0; font-size: 12px; color: #7d8aa3; }

/* ── 页面卡片布局（叶子页：--h2-inset 48px）── */
.page-wrap { --h2-inset: 48px; padding-bottom: 48px; }
.page-wrap .breadcrumb { padding-left: var(--h2-inset); }
.page-main { max-width: 900px; margin: 0 auto; }
.page-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 44px 40px var(--h2-inset); }
.page-card h1 { margin-top: 0; font-size: 26px; }
.page-card h2 { font-size: 20px; margin: 28px 0 10px; }
.page-card h2::after { content: ""; display: block; width: 46px; height: 4px; background: var(--accent); border-radius: 2px; margin-top: 6px; }
.page-card p, .page-card li { color: var(--ink-soft); }
.archive-list { padding-left: 20px; }

/* ── 首页 ── */
.hero { background: linear-gradient(135deg, #0a2c60 0%, #0c3c82 55%, #1156a8 100%); color: #fff; padding: 84px 0 72px; }
.hero h1 { font-size: 34px; line-height: 1.35; margin: 12px 0 18px; max-width: 880px; }
.hero-kicker { color: var(--accent); font-weight: 700; letter-spacing: 2px; margin: 0; font-size: 14px; }
.hero-sub { color: #cfe0ff; max-width: 860px; margin: 0 0 22px; }
.hero-bound { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.bound-chip { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.28); border-radius: 999px; padding: 4px 14px; font-size: 13px; }
.btn-primary { display: inline-block; background: var(--accent); color: #40300a; border: 0; font-weight: 700; font-size: 15px; border-radius: 10px; padding: 12px 22px; cursor: pointer; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { display: inline-block; border: 1px solid rgba(255,255,255,.55); color: #fff; border-radius: 10px; padding: 11px 20px; margin-left: 12px; }
.btn-ghost:hover { background: rgba(255,255,255,.1); text-decoration: none; }
.home-block { padding: 52px 0; }
.home-block h2 { font-size: 24px; margin: 0 0 22px; color: var(--brand-deep); }
.home-alt { background: #eef2f9; }
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cap-card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; color: inherit; }
.cap-card:hover { border-color: var(--brand); text-decoration: none; box-shadow: 0 6px 18px rgba(12,60,130,.08); }
.cap-name { font-weight: 700; margin: 0 0 8px; color: var(--brand-deep); }
.cap-desc { margin: 0; font-size: 13.5px; color: var(--ink-soft); }
.flow-list { padding-left: 22px; color: var(--ink-soft); }
.flow-list li { margin: 10px 0; }
.rule-list { color: var(--ink-soft); padding-left: 22px; }
.rule-list li { margin: 8px 0; }
.home-article-list { list-style: none; margin: 0; padding: 0; }
.home-article-list li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 12px; }
.home-article-list a { font-weight: 600; font-size: 16px; }
.home-article-list p { margin: 6px 0 0; color: var(--ink-soft); font-size: 14px; }
.text-link { font-weight: 600; }

/* ── 页脚 ── */
.site-footer { background: #0a1f42; color: #b9c6dd; margin-top: 20px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 24px; padding: 40px 20px 24px; }
.footer-brand { font-size: 18px; font-weight: 700; color: #fff; }
.footer-title { color: #fff; font-weight: 600; margin: 0 0 8px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; font-size: 13.5px; }
.footer-col li { margin: 5px 0; }
.footer-col a { color: #b9c6dd; }
.footer-base { border-top: 1px solid rgba(255,255,255,.12); padding: 14px 20px; font-size: 12.5px; }

/* ── 悬浮胶囊 + 名片弹窗 ── */
.float-pill { position: fixed; left: 0; top: 50%; transform: translateY(-50%); z-index: 70; display: flex; flex-direction: column; gap: 8px; }
.pill-btn { display: flex; align-items: center; gap: 8px; background: var(--brand-deep); color: #fff; border: 0; border-radius: 0 999px 999px 0; padding: 10px 16px 10px 14px; font-size: 13.5px; cursor: pointer; box-shadow: 0 4px 14px rgba(8,41,92,.35); }
.pill-btn:hover { background: var(--brand); }
.pill-ico { display: inline-flex; width: 22px; height: 22px; align-items: center; justify-content: center; background: var(--accent); color: #40300a; border-radius: 50%; font-size: 12px; font-weight: 700; }
.wx-modal { position: fixed; inset: 0; z-index: 90; display: flex; align-items: center; justify-content: center; }
.wx-modal[hidden] { display: none; }
.wx-mask { position: absolute; inset: 0; background: rgba(10,20,40,.55); }
.wx-panel { position: relative; background: #fff; border-radius: 16px; padding: 16px; box-shadow: 0 18px 50px rgba(0,0,0,.3); text-align: center; }
.wx-card-img { display: block; width: 300px; height: 500px; object-fit: contain; border-radius: 10px; background: #fff; }
.wx-tip { margin: 10px 0 0; font-size: 12.5px; color: #7d8aa3; }
.wx-close { position: absolute; top: 6px; right: 12px; border: 0; background: none; font-size: 26px; cursor: pointer; color: #5a6880; }

/* ── 响应式（移动端：分类默认折叠）── */
@media (max-width: 960px) {
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .toc-aside { position: static; max-height: none; order: -1; }
  .list-grid { grid-template-columns: 1fr; }
  .cat-toggle { display: block; }
  .cat-panel { display: none; }
  .cat-panel.open { display: block; }
  .hero h1 { font-size: 26px; }
  .content-inner { padding: 24px 18px 28px calc(18px + var(--h2-inset)); }
  .breadcrumb { padding-left: calc(18px + var(--h2-inset)); }
  .page-wrap .breadcrumb { padding-left: var(--h2-inset); }
  .float-pill .pill-txt { display: inline; }
}
@media (max-width: 560px) {
  .cap-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 8px 20px; }
  .site-nav li { border-top: 1px solid var(--line); }
  .site-nav li:first-child { border-top: 0; }
  .site-nav a { display: block; padding: 12px 0; }
  .hero { padding: 56px 0 48px; }
  .hero .btn-ghost { margin-left: 0; margin-top: 10px; display: block; text-align: center; }
  .hero .btn-primary { width: 100%; text-align: center; display: block; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}