/* ===== mold.代加工.中国 · 暗色科技风 ===== */
:root {
  --bg: #0a0e17;
  --bg-soft: #0f1521;
  --panel: #131b2b;
  --panel-2: #182236;
  --line: #243149;
  --text: #e6edf6;
  --muted: #93a3bd;
  --accent: #2dd4bf;
  --accent-2: #3b82f6;
  --accent-glow: rgba(45, 212, 191, 0.35);
  --radius: 14px;
  --maxw: 1200px;
  --content-w: 760px;
  --aside-w: 240px;
  --h2-inset: 16px;   /* 面包屑与 H2 左缘对齐基准 */
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: #5eead4; }
img { max-width: 100%; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 14, 23, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center; font-weight: 800; color: #04121a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px var(--accent-glow);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 16px; }
.brand-text em { font-style: normal; font-size: 12px; color: var(--muted); }

.site-nav { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-item > a {
  display: inline-block; padding: 8px 14px; border-radius: 8px;
  color: var(--text); font-size: 15px;
}
.nav-item > a:hover { background: var(--panel); color: #fff; }
.has-sub > a .caret {
  display: inline-block; width: 0; height: 0; margin-left: 6px;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 5px solid var(--muted); vertical-align: middle;
}
.sub-menu {
  position: absolute; top: 100%; left: 0; min-width: 200px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 6px; display: none; flex-direction: column; box-shadow: 0 12px 30px rgba(0,0,0,.5);
}
.has-sub:hover .sub-menu { display: flex; }
.sub-menu a { padding: 8px 12px; border-radius: 6px; color: var(--muted); font-size: 14px; }
.sub-menu a:hover { background: var(--panel-2); color: #fff; }

.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: var(--text); border-radius: 2px; }

/* ===== 容器 / 布局 ===== */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; padding: 28px 0 60px; }
.layout-with-aside { grid-template-columns: minmax(0, 1fr) var(--aside-w); align-items: start; }
.main-content { min-width: 0; }

/* 面包屑：与正文 H2 左缘严格对齐（同容器同 padding） */
.breadcrumb { padding: 18px 0 0; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 8px; margin: 0; padding: 0; font-size: 13px; color: var(--muted); }
.breadcrumb .sep { color: var(--line); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .current { color: var(--text); }

/* ===== TOC 悬浮（sticky，禁止 fixed）===== */
.toc-aside { position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow-y: auto; }
.toc-box { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.toc-title { margin: 0 0 10px; font-size: 13px; color: var(--muted); letter-spacing: .08em; }
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li { margin: 2px 0; }
.toc-list a { color: var(--muted); font-size: 14px; display: block; padding: 4px 8px; border-radius: 6px; border-left: 2px solid transparent; }
.toc-list a:hover { background: var(--panel-2); color: #fff; border-left-color: var(--accent); }
.toc-h3 a { padding-left: 22px; font-size: 13px; }

/* ===== 文章 / 产品正文 ===== */
.article-title, .product-title, .page-title {
  font-size: 30px; line-height: 1.35; margin: 6px 0 14px; font-weight: 800;
}
.article-cat-tag, .product-cat-tag { margin-bottom: 10px; }
.article-cat-tag a, .product-cat-tag a {
  display: inline-block; font-size: 13px; padding: 3px 10px; border-radius: 999px;
  background: rgba(45,212,191,.12); color: var(--accent); border: 1px solid rgba(45,212,191,.3);
}
.article-body, .product-body, .page-body { font-size: 16px; }
.article-body h2, .product-body h2, .page-body h2 {
  font-size: 22px; margin: 34px 0 12px; padding-top: 6px;
  border-left: 3px solid var(--accent); padding-left: var(--h2-inset); scroll-margin-top: 90px;
}
.article-body h3, .product-body h3, .page-body h3 {
  font-size: 18px; margin: 24px 0 10px; padding-left: var(--h2-inset); color: #cfe;
}
.article-body p, .product-body p, .page-body p { margin: 12px 0; }
.article-body ul, .article-body ol, .product-body ul, .page-body ul { padding-left: 24px; }

/* 摘要块 */
.summary-block {
  background: linear-gradient(135deg, rgba(45,212,191,.10), rgba(59,130,246,.08));
  border: 1px solid rgba(45,212,191,.25); border-radius: var(--radius);
  padding: 16px 18px; margin: 0 0 18px; font-size: 15px; color: #d7e6ee;
}
.summary-block strong { color: var(--accent); }

/* 关键词 / 时间 */
.article-body > strong, .article-body p strong { color: var(--accent); }
time { display: inline-block; font-size: 13px; color: var(--muted); margin: 4px 0 18px; }

/* 参数表 + 正文 markdown 表格 */
table.data, table.spec,
.article-body table, .product-body table, .page-body table {
  width: 100%; border-collapse: collapse; margin: 14px 0 20px; font-size: 15px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
table.data th, table.data td, table.spec th, table.spec td,
.article-body table th, .article-body table td,
.product-body table th, .product-body table td,
.page-body table th, .page-body table td {
  padding: 10px 14px; border: 1px solid var(--line); border-bottom: 1px solid var(--line);
  text-align: left; vertical-align: top;
}
table.data th, table.spec th,
.article-body table th, .product-body table th, .page-body table th {
  background: var(--panel-2); color: #cfe; font-weight: 600; white-space: nowrap;
}
table.data tr:last-child td, table.spec tr:last-child td,
.article-body table tr:last-child td, .product-body table tr:last-child td,
.page-body table tr:last-child td { border-bottom: 0; }

/* 结论块 / 实践经验 */
.article-body blockquote, .product-body blockquote {
  margin: 16px 0; padding: 12px 16px; border-left: 3px solid var(--accent-2);
  background: var(--panel); border-radius: 0 10px 10px 0; color: #d7e6ee;
}
.practice {
  margin: 18px 0; padding: 14px 16px; border: 1px dashed rgba(59,130,246,.4);
  border-radius: 10px; background: rgba(59,130,246,.06);
}
.practice strong { color: var(--accent-2); }

/* FAQ（裸 details） */
.faq { margin: 30px 0; }
.faq-title { font-size: 22px; padding-left: var(--h2-inset); border-left: 3px solid var(--accent); margin-bottom: 12px; }
.faq details {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  margin: 8px 0; padding: 0 14px;
}
.faq summary { cursor: pointer; padding: 12px 0; font-weight: 600; color: #e6edf6; }
.faq summary::-webkit-details-marker { color: var(--accent); }
.faq details p { margin: 0 0 12px; color: var(--muted); }

/* 相关阅读 / 相关产品 */
.related { margin: 30px 0; }
.related-title { font-size: 22px; padding-left: var(--h2-inset); border-left: 3px solid var(--accent); margin-bottom: 12px; }
.related-list { list-style: none; padding: 0; margin: 0; }
.related-list li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.related-list a { font-weight: 600; }
.related-why { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }

/* ===== 列表页 ===== */
.layout-with-aside .list-page { grid-column: 1; }
.list-header h1 { font-size: 28px; margin: 0 0 6px; }
.list-desc { color: var(--muted); margin: 0 0 18px; }
.item-list { list-style: none; padding: 0; margin: 0; }
.item-row { border-bottom: 1px solid var(--line); }
.item-link { display: block; padding: 16px 8px; }
.item-link:hover { background: var(--panel); }
.item-title { display: block; font-size: 18px; font-weight: 700; color: var(--text); }
.item-meta { display: inline-block; font-size: 12px; color: var(--accent); margin: 4px 0; }
.item-summary { display: block; color: var(--muted); font-size: 14px; }
.empty-note { color: var(--muted); padding: 30px 0; }

/* 分类左列表 */
.cat-side { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.cat-side-title { font-size: 13px; color: var(--muted); letter-spacing: .08em; margin: 0 0 10px; }
.category-list { list-style: none; margin: 0; padding: 0; }
.category-list li a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px; border-radius: 8px; color: var(--muted); font-size: 15px;
}
.category-list li a:hover { background: var(--panel-2); color: #fff; }
.category-list li.active a { background: rgba(45,212,191,.14); color: var(--accent); }
.cat-count { font-size: 12px; color: var(--muted); background: var(--bg-soft); padding: 1px 8px; border-radius: 999px; }

/* ===== 首页 ===== */
.hero { position: relative; overflow: hidden; padding: 70px 0 50px; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(700px 360px at 75% -10%, rgba(59,130,246,.22), transparent 60%),
    radial-gradient(600px 360px at 10% 10%, rgba(45,212,191,.18), transparent 60%);
}
.hero-inner { position: relative; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.hero-eyebrow { color: var(--accent); letter-spacing: .2em; font-size: 13px; margin: 0 0 12px; }
.hero-title { font-size: 40px; line-height: 1.25; margin: 0 0 18px; font-weight: 800; max-width: 880px; }
.hero-sub { color: var(--muted); font-size: 17px; max-width: 760px; margin: 0 0 26px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.btn-primary {
  display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 700;
  color: #04121a; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 24px var(--accent-glow); border: 0; cursor: pointer; font-size: 15px;
}
.btn-primary:hover { color: #04121a; filter: brightness(1.06); }
.btn-ghost {
  display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 600;
  color: var(--text); border: 1px solid var(--line); background: var(--panel);
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; }
.hero-stats { display: flex; gap: 30px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 18px; color: var(--accent); }
.hero-stats span { font-size: 13px; color: var(--muted); }

.section { max-width: var(--maxw); margin: 0 auto; padding: 50px 20px; }
.section-title { font-size: 28px; margin: 0 0 8px; }
.section-lead { color: var(--muted); margin: 0 0 28px; }

.chain-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.chain-steps li { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.chain-steps .step-no { font-size: 13px; color: var(--accent); font-weight: 700; }
.chain-steps h3 { margin: 8px 0 8px; font-size: 18px; }
.chain-steps p { color: var(--muted); font-size: 14px; margin: 0; }

.cat-grid, .topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cat-card, .topic-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; color: var(--text); transition: transform .15s ease, border-color .15s ease;
}
.cat-card:hover, .topic-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.cat-card h3, .topic-card h3 { margin: 0 0 8px; font-size: 18px; }
.cat-card p, .topic-card p { color: var(--muted); font-size: 14px; margin: 0; }

.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scene-card { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.scene-card h3 { margin: 0 0 8px; font-size: 16px; color: var(--accent); }
.scene-card p { color: var(--muted); font-size: 14px; margin: 0; }

.cta-steps { color: var(--muted); padding-left: 22px; margin: 0 0 24px; }
.cta-steps li { margin: 8px 0; }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 40px; }
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 40px 20px 20px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
.footer-col h3 { font-size: 16px; margin: 0 0 12px; }
.footer-col h4 { font-size: 14px; color: var(--muted); margin: 0 0 12px; letter-spacing: .06em; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin: 6px 0; font-size: 14px; }
.footer-note { color: var(--muted); font-size: 13px; }
.footer-desc { color: var(--muted); font-size: 14px; }
.footer-bottom { border-top: 1px solid var(--line); padding: 16px 20px; max-width: var(--maxw); margin: 0 auto; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }

/* ===== 悬浮胶囊 ===== */
.float-capsule {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 12px; z-index: 60;
}
.cap-btn {
  width: 52px; height: 52px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--panel); color: var(--text); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45); transition: transform .15s ease, border-color .15s ease;
}
.cap-btn span { font-size: 11px; color: var(--muted); }
.cap-btn:hover { transform: scale(1.06); border-color: var(--accent); }
.cap-btn:hover span { color: var(--accent); }

/* 企业微信名片弹层 */
.wechat-overlay {
  position: fixed; inset: 0; background: rgba(4,8,14,.78); z-index: 80;
  display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px);
}
.wechat-overlay[hidden] { display: none; }
.wechat-modal { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.wechat-modal img { display: block; width: 300px; height: 500px; object-fit: contain; image-rendering: auto; }
.wechat-tip { text-align: center; color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.wechat-close { position: absolute; top: -14px; right: -14px; width: 34px; height: 34px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel-2); color: var(--text); font-size: 20px; cursor: pointer; line-height: 1; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .layout-with-aside { grid-template-columns: 1fr; }
  .toc-aside { position: static; max-height: none; }
  .chain-steps { grid-template-columns: repeat(2, 1fr); }
  .cat-grid, .topic-grid, .scene-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 8px;
  }
  .site-nav.open { display: flex; }
  .has-sub .sub-menu { position: static; display: flex; box-shadow: none; border: 0; padding-left: 12px; }
  .hero-title { font-size: 28px; }
  .chain-steps, .cat-grid, .topic-grid, .scene-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .float-capsule { right: 10px; }
  .wechat-modal img { width: 240px; height: 400px; }
}

/* ===== 列表页长尾关键词簇 ===== */
.longtail-block { margin: 30px 0 10px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.longtail-block h2 { font-size: 20px; margin: 0 0 6px; padding-left: var(--h2-inset); border-left: 3px solid var(--accent); }
.longtail-desc { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.longtail-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 18px; }
.longtail-list li { position: relative; padding: 8px 12px 8px 22px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; font-size: 14px; color: #d7e6ee; }
.longtail-list li::before { content: "搜"; position: absolute; left: 8px; top: 8px; font-size: 11px; color: var(--accent); }
@media (max-width: 720px) { .longtail-list { grid-template-columns: 1fr; } }