/* cable.fakra.中国 站点样式 —— 全新原创 cab- 命名空间，深空蓝 + 信号紫 + 射频青 */
:root {
  --cab-bg: #0B1020;
  --cab-bg-2: #121A2E;
  --cab-panel: #16203A;
  --cab-line: #2A3550;
  --cab-purple: #7C5CFF;
  --cab-cyan: #2BD9D9;
  --cab-text: #E6ECF7;
  --cab-muted: #9AA7C2;
  --cab-soft: #C7D2EA;
  --cab-border: #cbd5e1;
  --cab-header-h: 64px;
  --h2-inset: 0px; /* 面包屑与 H2 同容器左缘对齐，由容器 padding 承载 */
  --cab-maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.cab-body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--cab-bg);
  color: var(--cab-text);
  line-height: 1.75;
  padding-top: var(--cab-header-h);
}
a { color: var(--cab-cyan); text-decoration: none; }
a:hover { color: var(--cab-purple); }
img { max-width: 100%; }

/* ===== 顶部固定导航 ===== */
.cab-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--cab-header-h);
  background: rgba(11,16,32,0.92);
  border-bottom: 1px solid var(--cab-line);
  backdrop-filter: blur(8px);
}
.cab-header-inner {
  max-width: var(--cab-maxw); margin: 0 auto; height: 100%;
  display: flex; align-items: center; gap: 18px; padding: 0 24px;
}
.cab-logo {
  font-weight: 800; font-size: 18px; letter-spacing: .5px;
  color: var(--cab-text);
  background: linear-gradient(90deg, var(--cab-purple), var(--cab-cyan));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.cab-nav { flex: 1; }
.cab-nav-list { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; align-items: center; }
.cab-nav-list > li { position: relative; }
.cab-nav-list > li > a { color: var(--cab-soft); font-size: 15px; padding: 6px 0; display: inline-block; }
.cab-nav-list > li > a:hover { color: var(--cab-cyan); }
.cab-nav-has-sub > .cab-nav-sub {
  position: absolute; top: 100%; left: 0; min-width: 150px;
  background: var(--cab-bg-2); border: 1px solid var(--cab-line); border-radius: 10px;
  padding: 8px; display: none; list-style: none; margin: 0; z-index: 110;
}
.cab-nav-has-sub:hover > .cab-nav-sub { display: block; }
.cab-nav-sub li a { display: block; padding: 7px 10px; border-radius: 6px; color: var(--cab-soft); font-size: 14px; }
.cab-nav-sub li a:hover { background: var(--cab-panel); color: var(--cab-cyan); }
.cab-nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: 8px; }
.cab-nav-toggle span { width: 22px; height: 2px; background: var(--cab-text); display: block; }

/* ===== 容器与栅格 ===== */
.cab-container { max-width: var(--cab-maxw); margin: 0 auto; padding: 28px 24px 48px; }
.cab-article-layout.cab-layout-grid,
.cab-list-layout.cab-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 32px;
  align-items: start;
}
.cab-list-layout.cab-layout-grid { grid-template-columns: 240px minmax(0, 1fr); }

/* 面包屑：与正文 H2 同容器左缘对齐（grid-column 1/-1 与正文同左缘） */
.cab-breadcrumb {
  grid-column: 1 / -1;
  font-size: 13px; color: var(--cab-muted); margin: 0 0 18px;
  padding-left: var(--h2-inset);
}
.cab-breadcrumb a { color: var(--cab-muted); }
.cab-breadcrumb a:hover { color: var(--cab-cyan); }
.cab-breadcrumb .cab-sep { margin: 0 8px; color: var(--cab-line); }
.cab-breadcrumb .cab-cur { color: var(--cab-soft); }

/* 正文 */
.cab-content-main { min-width: 0; }
.cab-content-main h1 { font-size: 30px; line-height: 1.3; margin: 0 0 6px; color: #fff; }
.cab-content-main h2 {
  font-size: 22px; margin: 34px 0 12px; padding-left: 12px;
  border-left: 4px solid var(--cab-purple); color: #fff;
}
.cab-content-main h3 { font-size: 18px; margin: 24px 0 10px; color: var(--cab-cyan); }
.cab-content-main p { margin: 12px 0; color: var(--cab-soft); }
.cab-content-main ul, .cab-content-main ol { margin: 12px 0; padding-left: 22px; color: var(--cab-soft); }
.cab-content-main li { margin: 6px 0; }
.cab-content-main blockquote {
  margin: 16px 0; padding: 12px 16px; border-left: 4px solid var(--cab-cyan);
  background: var(--cab-panel); border-radius: 8px; color: var(--cab-soft);
}
.cab-content-main .cab-summary {
  background: linear-gradient(135deg, rgba(124,92,255,0.12), rgba(43,217,217,0.10));
  border: 1px solid var(--cab-line); border-radius: 12px; padding: 16px 18px;
  color: var(--cab-text); margin: 14px 0 22px;
}
.cab-content-main .cab-keywords { margin: 0 0 16px; color: var(--cab-muted); font-size: 14px; }
.cab-content-main .cab-keywords b { color: var(--cab-cyan); }
.cab-content-main time { color: var(--cab-muted); font-size: 13px; }

/* 表格：覆盖正文内全部 table（含 Markdown 裸 table），边框清晰可见 */
.cab-content-main table,
.cab-page-main table,
table.cab-spec {
  width: 100%; border-collapse: collapse; margin: 16px 0;
  border: 1px solid var(--cab-border); font-size: 14.5px; background: var(--cab-bg-2);
}
.cab-content-main table th,
.cab-content-main table td,
.cab-page-main table th,
.cab-page-main table td,
table.cab-spec th,
table.cab-spec td {
  border: 1px solid var(--cab-border); padding: 9px 12px; text-align: left;
  color: var(--cab-text); vertical-align: top;
}
.cab-content-main table thead th,
.cab-content-main table th,
.cab-page-main table thead th,
.cab-page-main table th,
table.cab-spec thead th,
table.cab-spec th {
  background: var(--cab-purple); color: #fff; font-weight: 600;
}
.cab-content-main table tbody tr:nth-child(even) td,
.cab-page-main table tbody tr:nth-child(even) td,
table.cab-spec tbody tr:nth-child(even) td { background: rgba(255,255,255,0.04); }

/* 结论块 */
.cab-content-main .cab-conclusion { margin: 16px 0; padding: 12px 16px; border-radius: 10px; background: var(--cab-panel); border: 1px solid var(--cab-line); }
.cab-content-main .cab-conclusion ol { margin: 6px 0; }

/* 实践经验 callout */
.cab-callout.cab-case {
  margin: 22px 0; padding: 14px 18px; border-radius: 12px;
  border: 1px solid var(--cab-cyan); background: rgba(43,217,217,0.08); color: var(--cab-soft);
}
.cab-callout.cab-case b { color: var(--cab-cyan); }

/* 标签 */
.cab-tag-row { margin: 18px 0; }
.cab-tag-row .tag-text {
  display: inline-block; margin: 0 8px 8px 0; padding: 4px 12px; font-size: 13px;
  border: 1px solid var(--cab-line); border-radius: 999px; color: var(--cab-muted);
}

/* ===== TOC 悬浮目录（原生 details 折叠）===== */
.cab-toc-aside { position: sticky; top: calc(var(--cab-header-h) + 16px); max-height: calc(100vh - 100px); overflow-y: auto; }
.cab-toc-panel, .cab-cat-panel {
  background: var(--cab-panel); border: 1px solid var(--cab-line); border-radius: 12px; padding: 12px 14px;
}
.cab-toc-panel > summary, .cab-cat-summary { cursor: pointer; font-weight: 700; color: var(--cab-text); list-style: none; }
.cab-toc-panel > summary::-webkit-details-marker, .cab-cat-summary::-webkit-details-marker { display: none; }
.cab-toc-panel > summary::after, .cab-cat-summary::after { content: "▾"; float: right; color: var(--cab-cyan); transition: transform .2s; }
.cab-toc-panel[open] > summary::after, .cab-cat-panel[open] > .cab-cat-summary::after { transform: rotate(180deg); }
.cab-toc-inner { margin-top: 10px; }
.cab-toc-inner a { display: block; padding: 5px 0; color: var(--cab-muted); font-size: 13.5px; border-left: 2px solid transparent; padding-left: 8px; }
.cab-toc-inner a:hover { color: var(--cab-cyan); border-left-color: var(--cab-cyan); }
.cab-toc-inner .cab-toc-h3 { padding-left: 22px; font-size: 13px; }

/* ===== 列表页分类侧栏 ===== */
.cab-cat-side { position: sticky; top: calc(var(--cab-header-h) + 16px); align-self: start; }
.cab-cat-list { list-style: none; margin: 10px 0 0; padding: 0; }
.cab-cat-list li { margin: 2px 0; }
.cab-cat-list a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--cab-soft); font-size: 14.5px; }
.cab-cat-list a:hover, .cab-cat-list a.cab-active { background: var(--cab-bg-2); color: var(--cab-cyan); }
.cab-cat-content h1 { font-size: 28px; margin: 0 0 8px; }
.cab-cat-content .cab-cat-desc { color: var(--cab-muted); margin: 0 0 20px; }
.cab-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; margin: 20px 0; }
.cab-card {
  background: var(--cab-panel); border: 1px solid var(--cab-line); border-radius: 14px;
  padding: 18px; transition: transform .15s, border-color .15s;
}
.cab-card:hover { transform: translateY(-3px); border-color: var(--cab-purple); }
.cab-card h3 { margin: 0 0 8px; font-size: 17px; }
.cab-card h3 a { color: #fff; }
.cab-card p { margin: 0; color: var(--cab-muted); font-size: 13.5px; }
.cab-card .cab-card-meta { margin-top: 12px; color: var(--cab-cyan); font-size: 12.5px; }

/* ===== 文章/产品卡片列表（列表页条目，非分类侧栏）===== */
.cab-list-item { display: flex; justify-content: space-between; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--cab-line); }
.cab-list-item h3 { margin: 0 0 6px; font-size: 17px; }
.cab-list-item h3 a { color: #fff; }
.cab-list-item p { margin: 0; color: var(--cab-muted); font-size: 13.5px; max-width: 70%; }
.cab-list-item time { color: var(--cab-muted); font-size: 12.5px; white-space: nowrap; }

/* ===== FAQ（裸 details）===== */
.cab-faq-block { margin: 30px 0 10px; }
.cab-faq-block > h2 { font-size: 22px; color: #fff; border-left: 4px solid var(--cab-cyan); padding-left: 12px; }
.cab-faq-block details {
  border: 1px solid var(--cab-line); border-radius: 10px; margin: 10px 0; background: var(--cab-panel);
}
.cab-faq-block details summary { cursor: pointer; padding: 12px 16px; font-weight: 600; color: var(--cab-text); list-style: none; }
.cab-faq-block details summary::-webkit-details-marker { display: none; }
.cab-faq-block details summary::after { content: "▾"; float: right; color: var(--cab-cyan); }
.cab-faq-block details[open] summary::after { transform: rotate(180deg); }
.cab-faq-block details p { padding: 0 16px 14px; margin: 0; color: var(--cab-soft); }

/* 相关阅读 / 相关产品 */
.cab-related { margin: 30px 0 6px; }
.cab-related h2 { font-size: 22px; color: #fff; border-left: 4px solid var(--cab-purple); padding-left: 12px; }
.cab-related ul { list-style: none; padding: 0; margin: 12px 0; }
.cab-related li { padding: 10px 0; border-bottom: 1px solid var(--cab-line); color: var(--cab-muted); }
.cab-related li a { color: var(--cab-cyan); font-weight: 600; }

/* ===== 页面（about/contact/...）===== */
.cab-page-wrap { background: var(--cab-panel); border: 1px solid var(--cab-line); border-radius: 16px; padding: 48px; }
.cab-page-main h1 { font-size: 30px; margin: 0 0 16px; color: #fff; }
.cab-page-main h2 { font-size: 22px; margin: 28px 0 10px; color: var(--cab-cyan); }
.cab-page-main p { color: var(--cab-soft); }
.cab-page-main table, table.cab-spec { /* 同上覆盖 */ }

/* ===== 首页 ===== */
.cab-home-main h1 { font-size: 34px; margin: 6px 0 10px; color: #fff; }
.cab-home-hero { background: linear-gradient(135deg, rgba(124,92,255,0.16), rgba(43,217,217,0.12)); border: 1px solid var(--cab-line); border-radius: 18px; padding: 34px; margin: 18px 0 30px; }
.cab-home-hero p { color: var(--cab-soft); font-size: 16px; max-width: 760px; }
.cab-home-section { margin: 30px 0; }
.cab-home-section > h2 { font-size: 24px; color: #fff; border-left: 4px solid var(--cab-purple); padding-left: 12px; margin: 0 0 16px; }
.cab-pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; }
.cab-pill { padding: 8px 16px; border: 1px solid var(--cab-line); border-radius: 999px; color: var(--cab-soft); font-size: 14px; background: var(--cab-panel); }
.cab-stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin: 16px 0; }
.cab-stat { background: var(--cab-panel); border: 1px solid var(--cab-line); border-radius: 14px; padding: 18px; }
.cab-stat b { display: block; font-size: 26px; color: var(--cab-cyan); }
.cab-stat span { color: var(--cab-muted); font-size: 13.5px; }

/* ===== 归档 ===== */
.cab-archive-main h1 { font-size: 28px; margin: 0 0 18px; }
.cab-archive-group { margin: 18px 0; }
.cab-archive-group h2 { font-size: 20px; color: var(--cab-cyan); }
.cab-archive-group ul { list-style: none; padding: 0; margin: 8px 0; }
.cab-archive-group li { padding: 8px 0; border-bottom: 1px solid var(--cab-line); }
.cab-archive-group li a { color: var(--cab-soft); }

/* ===== 404 ===== */
.cab-404-main { text-align: center; padding: 60px 0; }
.cab-404-main h1 { font-size: 64px; color: var(--cab-purple); margin: 0; }
.cab-404-main p { color: var(--cab-muted); }

/* ===== 悬浮工具胶囊 ===== */
.cab-float {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%); z-index: 90;
  display: flex; flex-direction: column; gap: 10px;
}
.cab-float-btn {
  width: 56px; height: 56px; border-radius: 999px; border: 0; cursor: pointer;
  background: linear-gradient(135deg, var(--cab-purple), var(--cab-cyan));
  color: #06121f; font-weight: 700; font-size: 12px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  box-shadow: 0 6px 20px rgba(43,217,217,0.25);
}
.cab-float-btn:hover { filter: brightness(1.08); }
.cab-float-ico { font-size: 15px; line-height: 1; }

/* 名片弹层 */
.cab-card-overlay { position: fixed; inset: 0; background: rgba(4,8,18,0.78); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.cab-card-overlay[hidden] { display: none; }
.cab-card-box { position: relative; }
.cab-card-img { display: block; max-width: 90vw; max-height: 88vh; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.5); }
.cab-card-close { position: absolute; top: -14px; right: -14px; width: 36px; height: 36px; border-radius: 999px; border: 0; background: var(--cab-panel); color: #fff; font-size: 20px; cursor: pointer; }

/* ===== 页脚 ===== */
.cab-footer { background: var(--cab-bg-2); border-top: 1px solid var(--cab-line); margin-top: 40px; }
.cab-footer-inner { max-width: var(--cab-maxw); margin: 0 auto; padding: 36px 24px 20px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 24px; }
.cab-footer-logo { font-weight: 800; font-size: 17px; color: #fff; margin-bottom: 10px; }
.cab-footer-desc { color: var(--cab-muted); font-size: 13.5px; max-width: 320px; }
.cab-footer-title { font-size: 14px; color: var(--cab-soft); margin: 0 0 10px; }
.cab-footer-col ul { list-style: none; padding: 0; margin: 0; }
.cab-footer-col li { margin: 6px 0; }
.cab-footer-col a { color: var(--cab-muted); font-size: 13.5px; }
.cab-footer-col a:hover { color: var(--cab-cyan); }
.cab-footer-bottom { border-top: 1px solid var(--cab-line); padding: 14px 24px; text-align: center; color: var(--cab-muted); font-size: 12.5px; }

/* ===== 首页卡片版块 ===== */
.cab-home-section { margin: 36px 0; }
.cab-home-section h2 { margin: 0 0 10px; padding-left: 12px; border-left: 4px solid var(--cab-purple); font-size: 20px; }
.cab-home-lead { margin: 0 0 16px; font-size: 14px; color: var(--cab-muted); line-height: 1.8; }
.cab-home-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.cab-home-card { border: 1px solid var(--cab-line); border-radius: 12px; padding: 18px 18px 16px; background: var(--cab-bg-2, #111a30); }
.cab-home-card h3 { margin: 0 0 8px; font-size: 16px; color: var(--cab-text, #E2E8F0); }
.cab-home-card p { margin: 0; font-size: 13.5px; color: var(--cab-muted); line-height: 1.75; }
.cab-home-card a { color: var(--cab-cyan, #2BD9D9); font-size: 13px; text-decoration: none; display: inline-block; margin-top: 10px; }
.cab-home-card a:hover { text-decoration: underline; }
.cab-home-quick { margin: 0; padding: 0 0 0 2px; list-style: none; }
.cab-home-quick li { padding: 12px 14px; border: 1px solid var(--cab-line); border-radius: 10px; margin-bottom: 10px; font-size: 14px; line-height: 1.75; color: var(--cab-muted); background: var(--cab-bg-2, #111a30); }
.cab-home-quick li b { color: var(--cab-text, #E2E8F0); }
.cab-home-quick li a { color: var(--cab-cyan, #2BD9D9); text-decoration: none; white-space: nowrap; }
.cab-home-quick li a:hover { text-decoration: underline; }

/* ===== 正文配图（figure / figcaption）===== */
.cab-fig { margin: 26px 0; text-align: center; }
.cab-fig img { max-width: 100%; height: auto; border: 1px solid var(--cab-line); border-radius: 12px; background: #0B1020; display: inline-block; }
.cab-fig figcaption { margin-top: 10px; font-size: 13px; color: var(--cab-muted); line-height: 1.6; }

/* ===== 响应式折叠（V7.0 强制：≤1024 单列、面板收起、目录不 display:none）===== */
@media (max-width: 1024px) {
  .cab-article-layout.cab-layout-grid,
  .cab-list-layout.cab-layout-grid { grid-template-columns: 1fr; gap: 22px; }
  .cab-toc-aside { position: static; max-height: none; }
  .cab-cat-side { position: static; }
  .cab-nav { display: none; position: absolute; top: var(--cab-header-h); left: 0; right: 0; background: var(--cab-bg-2); border-bottom: 1px solid var(--cab-line); padding: 14px 24px; }
  .cab-nav.cab-nav-open { display: block; }
  .cab-nav-list { flex-direction: column; gap: 4px; }
  .cab-nav-has-sub > .cab-nav-sub { position: static; display: none; border: 0; background: none; padding: 4px 0 4px 12px; }
  .cab-nav-has-sub.cab-sub-open > .cab-nav-sub { display: block; }
  .cab-nav-toggle { display: flex; }
  .cab-page-wrap { padding: 28px 20px; }
}
@media (max-width: 640px) {
  .cab-container { padding: 20px 16px 40px; }
  .cab-content-main h1 { font-size: 24px; }
  .cab-footer-inner { grid-template-columns: 1fr 1fr; }
  .cab-float { right: 10px; }
  .cab-float-btn { width: 48px; height: 48px; font-size: 11px; }
}