/* ============================================================
   charge.车载连接器.中国 — 站点样式（原创设计，单站独立）
   主题：充电与换电连接器 / 高端科技风
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #eef4fb;
  --bg-tint: #f6f9fd;
  --ink: #0c2238;
  --ink-soft: #2b4a66;
  --muted: #5d7a93;
  --line: #d7e3f1;
  --line-strong: #b9cde2;
  --accent: #1a6dff;        /* 电蓝 */
  --accent-deep: #0b47c9;
  --accent-2: #00c4cf;      /* 充电青 */
  --energy: #18b56a;        /* 能量绿 */
  --dark: #061629;          /* 深空底 */
  --dark-2: #0a2140;
  --on-dark: #eaf2fc;
  --on-dark-muted: #9fb6d3;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 48px -24px rgba(11, 38, 80, .35);
  --shadow-sm: 0 8px 24px -16px rgba(11, 38, 80, .4);
  --maxw: 1240px;
  --nav-h: 72px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; text-underline-offset: .22em; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; margin: 0 0 .6em; color: var(--ink); letter-spacing: -.01em; }
p { margin: 0 0 1.1em; }
ul, ol { margin: 0 0 1.1em; padding-left: 1.2em; }
li { margin: .4em 0; }

:focus-visible { outline: 3px solid #f2a900; outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(var(--maxw), calc(100% - 44px)); margin-inline: auto; }
.skip { position: absolute; left: 16px; top: -120px; z-index: 60; background: #fff; padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow-sm); }
.skip:focus { top: 14px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: var(--nav-h); padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--ink); font-size: 1.06rem; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand .logo-mark {
  width: 34px; height: 34px; flex: none; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center; color: #fff; font-weight: 800;
  box-shadow: 0 6px 16px -8px rgba(26, 109, 255, .7);
}
.brand small { display: block; font-weight: 500; font-size: .68rem; color: var(--muted); letter-spacing: .04em; }

.primary-nav { display: flex; align-items: center; gap: 6px; }
.primary-nav > a {
  color: var(--ink); padding: 9px 14px; border-radius: 9px; font-size: .95rem; font-weight: 500;
}
.primary-nav > a:hover { background: var(--bg-soft); text-decoration: none; }
.primary-nav > a.active { color: var(--accent); background: var(--bg-soft); }

.nav-cta { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep)); color: #fff; font-weight: 600; font-size: .92rem; box-shadow: var(--shadow-sm); }
.nav-cta:hover { text-decoration: none; filter: brightness(1.05); }

#nav-toggle { display: none; border: 1px solid var(--line-strong); background: #fff; color: var(--ink);
  padding: 9px 14px; border-radius: 9px; font: inherit; font-size: .9rem; cursor: pointer; }

/* ---------------- 通用区块 ---------------- */
.section { padding-block: clamp(56px, 8vw, 104px); }
.section--soft { background: var(--bg-soft); }
.section--tint { background: var(--bg-tint); }
.section__head { max-width: 760px; margin-bottom: 40px; }
.section__head.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-weight: 700; font-size: .8rem;
  letter-spacing: .14em; text-transform: uppercase; margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); border-radius: 2px; }
h2.title { font-size: clamp(1.7rem, 3.2vw, 2.6rem); font-weight: 700; }
.section__head p.lead { color: var(--muted); font-size: 1.04rem; margin-top: 12px; }

/* 卡片网格 */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.card .ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(26,109,255,.12), rgba(0,196,207,.12)); color: var(--accent); margin-bottom: 16px;
}
.card h3 { font-size: 1.12rem; }
.card p { color: var(--muted); font-size: .94rem; margin-bottom: 0; }
.card .tag { display: inline-block; margin-top: 14px; font-size: .78rem; color: var(--accent); font-weight: 600; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-deep)); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { text-decoration: none; filter: brightness(1.05); }
.btn-ghost { background: #fff; border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.btn-line { color: var(--accent); font-weight: 600; padding: 4px 0; }
.btn-line::after { content: "→"; margin-left: 6px; transition: margin .2s; }
.btn-line:hover::after { margin-left: 12px; }

/* ---------------- 首屏 Hero ---------------- */
.hero { position: relative; overflow: hidden; background: radial-gradient(120% 120% at 80% -10%, #0c2a52 0%, var(--dark) 55%); color: var(--on-dark); }
.hero::before { content: ""; position: absolute; inset: 0; background-image:
  radial-gradient(circle at 12% 30%, rgba(26,109,255,.22), transparent 38%),
  radial-gradient(circle at 88% 75%, rgba(0,196,207,.18), transparent 40%); }
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 56px; align-items: center; padding-block: clamp(64px, 9vw, 120px); }
.hero .eyebrow { color: var(--accent-2); }
.hero .eyebrow::before { background: var(--accent-2); }
.hero h1 { color: #fff; font-size: clamp(2.1rem, 4.8vw, 3.7rem); font-weight: 700; line-height: 1.18; margin: 16px 0 22px; letter-spacing: -.02em; }
.hero h1 .hl { background: linear-gradient(120deg, var(--accent-2), #7fd0ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: var(--on-dark-muted); font-size: 1.08rem; max-width: 44ch; }
.hero .actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 30px; }
.hero .actions .btn-ghost { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.22); color: #fff; }
.hero .actions .btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

.hero-stats { display: flex; gap: 28px; margin-top: 40px; flex-wrap: wrap; }
.hero-stats div { border-left: 2px solid rgba(255,255,255,.16); padding-left: 16px; }
.hero-stats strong { display: block; font-size: 1.5rem; color: #fff; font-weight: 700; }
.hero-stats span { font-size: .82rem; color: var(--on-dark-muted); }

/* Hero 右侧覆盖范围（纯文字说明，不使用图示） */
.hero-brief { position: relative; border-radius: 20px; background: linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.12); padding: 30px 30px 24px; box-shadow: var(--shadow); }
.hero-brief__label { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-2);
  font-weight: 700; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 22px; }
.hero-brief__label::before { content: ""; width: 22px; height: 2px; background: var(--accent-2); border-radius: 2px; }
.hero-brief__list { list-style: none; margin: 0; padding: 0; }
.hero-brief__list li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; align-items: start;
  padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.10); }
.hero-brief__list li:last-child { padding-bottom: 0; margin-bottom: 0; border-bottom: 0; }
.hero-brief__no { font-size: .82rem; font-weight: 700; color: var(--accent-2); opacity: .8; padding-top: 3px; letter-spacing: .06em; }
.hero-brief__list strong { display: block; color: #fff; font-size: 1.02rem; margin-bottom: 5px; }
.hero-brief__list p { color: var(--on-dark-muted); font-size: .9rem; line-height: 1.68; margin: 0; }
.hero-brief__note { margin: 22px 0 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12);
  color: var(--on-dark-muted); font-size: .8rem; line-height: 1.6; }

/* ---------------- 选型/标准对照 ---------------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.spec-list { list-style: none; padding: 0; margin: 0; }
.spec-list li { display: grid; grid-template-columns: 32px minmax(0,1fr); gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); margin: 0; }
.spec-list li:last-child { border-bottom: 0; }
.spec-list .dot { width: 32px; height: 32px; border-radius: 9px; background: var(--bg-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; }

/* 标准对照表 */
.std-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.std-table th, .std-table td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: .92rem; }
.std-table th { background: var(--dark); color: #fff; font-weight: 600; }
.std-table tr:last-child td { border-bottom: 0; }
.std-table td code { background: var(--bg-soft); padding: 2px 7px; border-radius: 6px; font-size: .85rem; color: var(--accent-deep); }

/* ---------------- 应用场景 ---------------- */
.scene { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.scene .card { position: relative; padding: 24px 22px; }
.scene .card .num { font-size: .8rem; font-weight: 700; color: var(--accent-2); letter-spacing: .08em; }
.scene .card h3 { font-size: 1.04rem; margin: 8px 0 6px; }
.scene .card p { font-size: .88rem; margin: 0; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--dark); color: var(--on-dark-muted); padding-block: 56px 28px; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 36px; }
.site-footer h4 { color: #fff; font-size: .98rem; margin-bottom: 16px; }
.site-footer a { color: var(--on-dark-muted); display: block; padding: 5px 0; font-size: .9rem; }
.site-footer a:hover { color: #fff; text-decoration: none; }
.site-footer .brand { color: #fff; margin-bottom: 14px; }
.site-footer .brand small { color: var(--on-dark-muted); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; font-size: .82rem; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-bottom a { display: inline; padding: 0; }

/* ============================================================
   面包屑（与正文 H2 左缘严格对齐）
   ============================================================ */
.crumb { padding-top: 26px; margin-bottom: 4px; }
.crumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; font-size: .85rem; color: var(--muted); }
.crumb li { margin: 0; display: flex; align-items: center; gap: 8px; }
.crumb li:not(:last-child)::after { content: "/"; color: var(--line-strong); }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--accent); }
.crumb [aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ============================================================
   悬浮工具胶囊（右侧居中，彩色长胶囊）
   ============================================================ */
.float-capsule { position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 40;
  display: flex; flex-direction: column; gap: 8px; padding: 10px;
  border-radius: 999px; background: linear-gradient(160deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 34px -12px rgba(26,109,255,.7); }
.float-capsule button { width: 46px; height: 46px; border: 0; border-radius: 999px; cursor: pointer;
  background: rgba(255,255,255,.16); color: #fff; display: grid; place-items: center; transition: background .2s, transform .2s; }
.float-capsule button:hover { background: rgba(255,255,255,.3); transform: scale(1.05); }
.float-capsule button svg { width: 22px; height: 22px; }
.float-capsule button .lbl { position: absolute; right: 60px; white-space: nowrap; background: var(--dark); color: #fff;
  font-size: .76rem; padding: 5px 10px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s; }
.float-capsule button:hover .lbl { opacity: 1; }

/* 微信名片弹层（300x500 原尺寸高清） */
.wx-modal { position: fixed; inset: 0; z-index: 70; display: none; place-items: center;
  background: rgba(6, 22, 41, .62); backdrop-filter: blur(3px); padding: 24px; }
.wx-modal.open { display: grid; }
.wx-modal__box { position: relative; background: #fff; border-radius: 14px; padding: 14px; box-shadow: var(--shadow); }
.wx-modal__box img { width: 300px; height: 500px; object-fit: contain; border-radius: 8px; display: block; }
.wx-modal__close { position: absolute; top: -14px; right: -14px; width: 38px; height: 38px; border-radius: 999px;
  border: 0; background: var(--dark); color: #fff; font-size: 1.2rem; cursor: pointer; box-shadow: var(--shadow-sm); }
.wx-modal__hint { text-align: center; font-size: .8rem; color: var(--muted); margin: 10px 0 2px; }

/* ============================================================
   文章 / 产品 详情骨架通用容器
   ============================================================ */
.detail { padding-bottom: 80px; }
.detail__title { font-size: clamp(1.8rem, 3.4vw, 2.7rem); font-weight: 700; margin: 10px 0 14px; }
.detail__meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: .9rem; padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 34px; }
.detail__meta span { display: inline-flex; align-items: center; gap: 6px; }

/* 文章正文骨架 */
.article-body { max-width: 820px; margin-inline: auto; }
.article-body h2 { font-size: 1.6rem; margin-top: 42px; scroll-margin-top: calc(var(--nav-h) + 20px); }
.article-body h3 { font-size: 1.22rem; margin-top: 28px; }
.article-body p { color: #22384f; }
.article-body blockquote { margin: 24px 0; padding: 14px 20px; border-left: 4px solid var(--accent);
  background: var(--bg-soft); border-radius: 0 10px 10px 0; color: var(--ink); font-size: 1.02rem; }
.article-body ul.tips { background: var(--bg-tint); border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; }
.article-body figure { margin: 30px 0; }
.article-body figure figcaption { color: var(--muted); font-size: .84rem; margin-top: 10px; text-align: center; }

/* 文章目录（侧栏） */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 48px; align-items: start; }
.toc { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; }
.toc h4 { font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.toc ol { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--line); }
.toc li a { display: block; padding: 7px 0 7px 16px; margin-left: -2px; border-left: 2px solid transparent; color: var(--muted); font-size: .9rem; }
.toc li a:hover, .toc li a.active { color: var(--accent); border-left-color: var(--accent); text-decoration: none; }

/* 相关阅读 */
.related { margin-top: 56px; }
.related h3 { font-size: 1.3rem; margin-bottom: 22px; }

/* 产品详情骨架 */
.product-layout { display: grid; grid-template-columns: minmax(0, 296px) minmax(0, 1fr); gap: 48px; align-items: start; }
.product-brief { position: sticky; top: calc(var(--nav-h) + 20px); background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.product-brief__label { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px; color: var(--accent);
  font-size: .74rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.product-brief__label::before { content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }
.product-brief__label--sub { margin-top: 22px; }
.product-brief__row { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0;
  border-bottom: 1px dashed var(--line); font-size: .9rem; }
.product-brief__row span { color: var(--muted); }
.product-brief__row strong { color: var(--ink); font-weight: 600; text-align: right; }
.product-brief__scenes { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.product-brief__scenes li { padding: 5px 12px; border-radius: 999px; background: var(--bg-tint);
  border: 1px solid var(--line); font-size: .82rem; color: var(--ink); }
.product-brief__params { list-style: none; margin: 0; padding: 0; }
.product-brief__params li { padding: 10px 0; border-bottom: 1px dashed var(--line); }
.product-brief__params li:last-child { padding-bottom: 0; border-bottom: 0; }
.product-brief__params span { display: block; color: var(--muted); font-size: .8rem; margin-bottom: 4px; }
.product-brief__params strong { display: block; color: var(--ink); font-size: .9rem; font-weight: 600; line-height: 1.6; }
.product-brief__note { margin: 20px 0 0; padding-top: 14px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: .78rem; line-height: 1.6; }
.product-summary h1 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); margin: 8px 0 16px; }
.product-summary .price-note { background: var(--bg-tint); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; color: var(--muted); font-size: .92rem; margin-bottom: 24px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 18px 0 8px; }
.spec-table th, .spec-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: .92rem; vertical-align: top; }
.spec-table th { width: 38%; color: var(--muted); font-weight: 600; }
.product-blocks h2 { font-size: 1.5rem; margin-top: 44px; scroll-margin-top: calc(var(--nav-h) + 20px); }
.product-blocks h3 { font-size: 1.18rem; margin-top: 26px; }
.product-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }

/* 列表页 */
.list-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-row { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: #fff; color: var(--ink); font-size: .88rem; cursor: pointer; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* 关于我们 */
.about-hero { background: radial-gradient(120% 120% at 20% 0%, #0c2a52, var(--dark) 60%); color: var(--on-dark); }
.about-hero .wrap { padding-block: clamp(60px, 8vw, 110px); }
.about-hero h1 { color: #fff; font-size: clamp(2rem, 4vw, 3rem); }
.about-hero p { color: var(--on-dark-muted); max-width: 60ch; }
.value-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.timeline { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 28px 28px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 999px; background: var(--accent); box-shadow: 0 0 0 4px rgba(26,109,255,.15); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .value-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
  .product-layout { grid-template-columns: minmax(0, 1fr); }
  .product-brief { position: static; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  :root { --nav-h: 64px; }
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  /* 移动端导航折叠，点击展开 */
  .js #nav-toggle { display: inline-flex; align-items: center; gap: 8px; }
  .js .primary-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column;
    align-items: stretch; gap: 4px; background: #fff; border-bottom: 1px solid var(--line); padding: 12px 22px 18px;
    box-shadow: var(--shadow-sm); }
  .js .primary-nav.open { display: flex; }
  .js .primary-nav > a { padding: 12px 14px; }
  .nav-cta { display: none; }
  .float-capsule { right: 12px; }
  .site-footer .cols { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

/* ===== 列表 / 分类页（M1'：分类左列表，禁止 card-grid） ===== */
.list-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 40px; align-items: start; margin: 8px 0 40px; }
.cat-side { position: sticky; top: 86px; }
.category-list { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #fff; }
.category-list li + li { border-top: 1px solid var(--line); }
.category-list a { display: block; padding: 12px 16px; color: var(--ink); text-decoration: none; font-weight: 600; }
.category-list a:hover, .category-list a.active { background: var(--bg-tint); color: var(--brand); }
.cat-content .cat-title { font-size: 1.05rem; color: var(--ink-2); margin: 22px 0 10px; }
.entry-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.entry-list li { padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.entry-list a { font-weight: 700; color: var(--brand); text-decoration: none; }
.entry-list p { margin: 8px 0 0; color: var(--ink-2); font-size: .95rem; }

/* ===== FAQ / details（裸 details，无 class，满足 faq_dom: bare_details） ===== */
.faq { margin: 18px 0; }
details { border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin: 14px 0; background: var(--bg-tint); }
summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 6px; }
details p { margin: 10px 0 0; }

/* ===== 相关阅读 / 页面卡片 ===== */
.related { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 18px; }
.rel-list { list-style: none; padding: 0; display: grid; gap: 8px; }
.rel-list a { color: var(--brand); text-decoration: none; }
.rel-list a:hover { text-decoration: underline; }
.page-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px; }

/* ===== 产品：技术参数块 / CTA ===== */
.spec-block { margin: 18px 0; }
.product-cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0; }
.price-note { background: var(--bg-tint); border-left: 3px solid var(--brand); padding: 10px 14px; border-radius: 8px; color: var(--ink-2); margin: 12px 0; }
.product-brief__row:last-of-type { border-bottom: 0; }

/* ===== M1'' 要求：TOC 粘性定位选择器 ===== */
.toc-aside { position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow-y: auto; }