/* 知识库前台样式 —— 阿里云帮助中心风格（浅色） */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #252b3a;
  background: #fff;
  font-size: 14px;
  line-height: 1.7;
}
a { color: #2674e0; text-decoration: none; }
a:hover { color: #175199; }

/* ===== 顶部导航 ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid #e8eaee;
  position: sticky; top: 0; z-index: 100;
}
.header-inner {
  width: 100%; margin: 0 auto; padding: 0 32px;
  height: 56px; display: flex; align-items: center; gap: 32px;
}
.logo { display: flex; align-items: center; gap: 8px; }
.logo-mark {
  width: 30px; height: 30px; background: #ff6a00; color: #fff;
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px;
}
.logo-text { font-size: 17px; font-weight: 600; color: #252b3a; }
.header-nav { display: flex; gap: 22px; margin-left: 8px; }
.header-nav a { color: #464c59; font-size: 13.5px; }
.header-nav a:hover { color: #2674e0; }
.header-nav .nav-flat { color: #6b7280; font-size: 13.5px; cursor: default; }
.header-search { margin-left: auto; width: 320px; display: flex; }
.header-search input {
  flex: 1; height: 34px; border: 1px solid #d4d7de; border-right: none;
  border-radius: 4px 0 0 4px; padding: 0 12px; font-size: 13px; outline: none;
}
.header-search input:focus { border-color: #2674e0; }
.header-search button {
  height: 34px; padding: 0 18px; background: var(--kb-search-btn, #2674e0); color: #fff;
  border: none; border-radius: 0 4px 4px 0; cursor: pointer; font-size: 13px;
}
.header-search button:hover { background: var(--kb-search-btn, #2674e0); filter: brightness(.85); }

/* ===== 首页轮播 ===== */
.hero-carousel { position: relative; height: 340px; overflow: hidden; background: #14203c; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease;
  display: flex; align-items: center; background-size: cover; background-position: center;
}
.hero-slide.active { opacity: 1; }
.hero-content { width: 100%; margin: 0 auto; padding: 0 60px; color: #fff; }
.hero-title {
  font-size: 40px; font-weight: 700; letter-spacing: 1px; margin-bottom: 12px;
  text-shadow: 0 2px 14px rgba(0,0,0,.28);
}
.hero-sub { font-size: 16px; color: rgba(255,255,255,.88); margin-bottom: 26px; text-shadow: 0 1px 8px rgba(0,0,0,.25); }
.hero-btn {
  display: inline-block; background: rgba(255,255,255,.95); color: #1a3a8f;
  font-weight: 600; padding: 10px 30px; border-radius: 24px; font-size: 14px;
  transition: transform .15s, box-shadow .15s;
}
.hero-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.28); color: #1a3a8f; }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 42px; height: 42px; border-radius: 50%; border: none;
  background: rgba(255,255,255,.22); color: #fff; font-size: 24px; line-height: 1;
  cursor: pointer; transition: background .15s;
}
.hero-arrow:hover { background: rgba(255,255,255,.42); }
.hero-prev { left: 22px; }
.hero-next { right: 22px; }
.hero-dots {
  position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 3;
}
.hero-dot {
  width: 26px; height: 4px; border-radius: 2px; background: rgba(255,255,255,.35);
  cursor: pointer; transition: background .2s, width .2s;
}
.hero-dot.active { background: #fff; width: 34px; }
@media (max-width: 900px) {
  .hero-carousel { height: 220px; }
  .hero-content { padding: 0 24px; }
  .hero-title { font-size: 26px; }
  .hero-sub { font-size: 13px; margin-bottom: 16px; }
  .hero-arrow { display: none; }
}

/* ===== 面包屑 ===== */
.breadcrumb { background: #f7f8fa; border-bottom: 1px solid #eef0f3; }
.breadcrumb-inner {
  width: 100%; margin: 0 auto; padding: 8px 32px;
  font-size: 12px; color: #8a9099;
}
.crumb-item a { color: #8a9099; }
.crumb-item a:hover { color: #2674e0; }
.crumb-sep { margin: 0 8px; color: #c9cdd4; }

/* ===== 三栏布局（通栏自适应：内容区随浏览器宽度撑满） ===== */
.page-body {
  width: 100%; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 250px minmax(0, 1fr) 235px;
  gap: 32px; min-height: calc(100vh - 200px);
}
.page-body.no-sidebar { grid-template-columns: minmax(0, 1fr) 235px; gap: 32px; }
.page-body.no-sidebar .main { padding-top: 34px; }
.page-body.no-sidebar .toc-wrap { padding-top: 34px; }
/* 文章页：目录独立成列（分类 | 正文 | 目录 | 榜单） */
.page-body.has-toc { grid-template-columns: 250px minmax(0, 1fr) 235px 235px; }

/* ===== 左侧分类树 ===== */
.sidebar { padding: 20px 0; border-right: 1px solid #f0f1f3; }
.tree { list-style: none; }
.tree .tree { margin-left: 14px; }
.tree-item { display: flex; align-items: center; border-radius: 4px; }
.tree-item a {
  display: block; flex: 1; padding: 7px 8px; color: #464c59;
  font-size: 13.5px; border-radius: 4px; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.tree-item a:hover { background: #f2f6fd; color: #2674e0; }
.tree-item.active a { background: #eaf1fc; color: #2674e0; font-weight: 600; }
.tree-arrow { width: 14px; color: #a2a9b3; font-size: 11px; transition: transform .15s; }
.tree-arrow.expanded { transform: rotate(90deg); display: inline-block; }
.tree-arrow-placeholder { width: 14px; }
/* 分类文章数：桌面侧栏隐藏，手机端折叠面板显示（阿里云风格） */
.tree-count { display: none; margin-left: auto; padding-right: 8px; color: #a2a9b3; font-size: 12.5px; }
.tree-empty { color: #a2a9b3; font-size: 13px; padding: 12px 0; }

/* ===== 中间内容 ===== */
.main { padding: 28px 0 48px; min-width: 0; }
.page-title { font-size: 24px; font-weight: 600; line-height: 1.4; margin-bottom: 8px; }
.article-meta { color: #a2a9b3; font-size: 12.5px; display: flex; gap: 16px; margin-bottom: 28px; }
.home-title { font-size: 26px; font-weight: 700; margin-top: 12px; }
.home-sub { color: #8a9099; margin: 6px 0 24px; }
.section-title { font-size: 17px; font-weight: 600; margin: 28px 0 12px; }

/* 首页卡片 */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.home-card {
  display: block; border: 1px solid #e8eaee; border-radius: 8px;
  padding: 18px; transition: box-shadow .15s, border-color .15s;
}
.home-card:hover { border-color: #2674e0; box-shadow: 0 4px 14px rgba(38,116,224,.10); }
.home-card-title { font-size: 15px; font-weight: 600; color: #252b3a; margin-bottom: 6px; }
.home-card-desc { color: #8a9099; font-size: 12.5px; margin-bottom: 10px; min-height: 18px; }
.home-card-count { color: #2674e0; font-size: 12px; }

/* 文章列表 */
.article-list { list-style: none; }
.article-item {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
  padding: 13px 4px; border-bottom: 1px solid #f0f1f3;
}
.article-link { font-size: 14.5px; color: #252b3a; }
.article-link:hover { color: #2674e0; }
.article-summary { color: #8a9099; font-size: 12.5px; margin-top: 3px; }
.article-side { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.article-views { color: #a2a9b3; font-size: 12px; white-space: nowrap; }
.article-date { color: #a2a9b3; font-size: 12px; white-space: nowrap; padding-top: 0; }
.search-count { color: #8a9099; margin-bottom: 8px; }

/* ===== 右栏榜单（推荐文章 / 趋势文章） ===== */
.rank-wrap { padding-top: 28px; }
.rank-card {
  background: #fbfcfe; border: 1px solid #eef0f3; border-radius: 8px;
  padding: 14px 14px 8px; margin-bottom: 16px;
}
.rank-head { font-size: 13.5px; font-weight: 600; color: #252b3a; padding-bottom: 8px; border-bottom: 1px solid #eef0f3; }
.rank-list { list-style: none; counter-reset: rank; }
.rank-item { display: flex; align-items: baseline; gap: 8px; padding: 7px 0; border-bottom: 1px dashed #f0f1f3; }
.rank-item:last-child { border-bottom: none; }
.rank-no {
  flex: 0 0 18px; height: 18px; line-height: 18px; text-align: center;
  background: #e8eaee; color: #8a9099; border-radius: 4px;
  font-size: 11px; font-weight: 600; transform: translateY(-1px);
}
.rank-no.top { background: #ff6a00; color: #fff; }
.rank-link {
  flex: 1; min-width: 0; color: #464c59; font-size: 13px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.rank-link:hover { color: #2674e0; }
.rank-meta { flex: 0 0 auto; color: #a2a9b3; font-size: 11.5px; }

/* ===== Markdown 正文 ===== */
.markdown-body { font-size: 14.5px; line-height: 1.85; overflow-wrap: break-word; word-break: break-word; }
.markdown-body h1 { font-size: 22px; font-weight: 600; margin: 26px 0 14px; }
.markdown-body h2 {
  font-size: 19px; font-weight: 600; margin: 30px 0 14px;
  padding-bottom: 8px; border-bottom: 1px solid #eef0f3;
}
.markdown-body h3 { font-size: 16px; font-weight: 600; margin: 22px 0 10px; }
.markdown-body h2[id], .markdown-body h3[id] { scroll-margin-top: 76px; }
.markdown-body p { margin: 10px 0; }
.markdown-body ul, .markdown-body ol { padding-left: 24px; margin: 10px 0; }
.markdown-body li { margin: 4px 0; }
.markdown-body img { max-width: 100%; border-radius: 6px; margin: 10px 0; }
.markdown-body video { max-width: 100%; border-radius: 6px; margin: 12px 0; background: #000; }
.markdown-body iframe { max-width: 100%; border: 0; border-radius: 6px; margin: 12px 0; }
.markdown-body blockquote {
  margin: 14px 0; padding: 10px 16px; background: #f2f8ff;
  border-left: 3px solid #2674e0; border-radius: 0 6px 6px 0; color: #464c59;
}
.markdown-body blockquote p { margin: 4px 0; }
.markdown-body table { border-collapse: collapse; margin: 14px 0; width: 100%; display: block; overflow-x: auto; }
.markdown-body th, .markdown-body td {
  border: 1px solid #e3e5ea; padding: 8px 12px; font-size: 13.5px; text-align: left;
}
.markdown-body th { background: #f7f8fa; font-weight: 600; }
.markdown-body code {
  background: #f2f3f5; padding: 2px 6px; border-radius: 4px;
  font-family: "JetBrains Mono", Consolas, "Courier New", monospace; font-size: 13px; color: #c7254e;
}
.markdown-body pre {
  background: #f6f8fa; border: 1px solid #e8eaee; border-radius: 8px;
  padding: 14px 16px; overflow-x: auto; margin: 14px 0; line-height: 1.6;
}
.markdown-body pre code { background: none; padding: 0; color: #24292f; font-size: 13px; }
/* highlight.js 浅色主题（github 风格精简版） */
.hljs-comment, .hljs-quote { color: #6a737d; }
.hljs-keyword, .hljs-selector-tag, .hljs-subst { color: #d73a49; }
.hljs-literal, .hljs-number { color: #005cc5; }
.hljs-string, .hljs-doctag { color: #032f62; }
.hljs-title, .hljs-section, .hljs-name { color: #6f42c1; }
.hljs-attr, .hljs-attribute, .hljs-variable, .hljs-type { color: #e36209; }
.hljs-built_in, .hljs-builtin-name, .hljs-symbol { color: #e36209; }
.hljs-meta { color: #6a737d; }

/* ===== 右侧目录 ===== */
.toc-wrap { padding: 28px 0; }
.toc { position: sticky; top: 80px; border-left: 2px solid #eef0f3; }
.toc-title { font-size: 13px; font-weight: 600; color: #464c59; padding: 0 0 8px 14px; }.toc ul { list-style: none; max-height: calc(100vh - 160px); overflow-y: auto; }
.toc li a {
  display: block; padding: 4px 14px; color: #575d6c; font-size: 12.5px;
  border-left: 2px solid transparent; margin-left: -2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.toc li a:hover { color: #2674e0; }
.toc li a.toc-active { color: #2674e0; border-left-color: #2674e0; font-weight: 600; }
.toc-lv3 a { padding-left: 26px; }

/* ===== 页脚 ===== */
/* ===== 页脚（阿里云帮助中心风格：浅灰底 + 多列链接 + 分隔线下版权行） ===== */
.site-footer { border-top: 1px solid #e8eaee; background: #f5f6f7; margin-top: 28px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.footer-main { padding: 34px 0 26px; }
.footer-main .footer-inner { display: flex; flex-wrap: wrap; gap: 28px 48px; }
.footer-brand { flex: 1 1 240px; max-width: 340px; min-width: 0; }
.footer-logo { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; color: #23272e; margin-bottom: 10px; }
.footer-logo-mark {
  width: 24px; height: 24px; border-radius: 6px; background: #2674e0; color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
}
.footer-about { color: #6b7280; font-size: 12.5px; line-height: 1.8; margin: 0 0 12px; }
.footer-contact { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: #6b7280; }
.footer-contact a { color: #6b7280; text-decoration: none; }
.footer-contact a:hover { color: #2674e0; }
.footer-col { flex: 0 1 auto; min-width: 120px; }
.footer-col-title { font-size: 13px; font-weight: 600; color: #23272e; margin-bottom: 12px; }
.footer-col-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col-links a { color: #6b7280; font-size: 12.5px; text-decoration: none; }
.footer-col-links a:hover { color: #2674e0; }
.footer-bottom { border-top: 1px solid #e5e7ea; padding: 14px 0 18px; }
.footer-bottom-links { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-bottom: 10px; }
.footer-bottom-links a, .footer-bottom-links span { color: #6b7280; font-size: 12px; text-decoration: none; }
.footer-bottom-links a:hover { color: #2674e0; }
.footer-copyright { color: #9aa2ad; font-size: 12px; line-height: 1.7; }
@media (max-width: 600px) {
  .footer-main { padding: 24px 0 18px; }
  .footer-main .footer-inner { gap: 20px 28px; }
  .footer-brand { flex: 1 1 100%; max-width: none; }
}

/* ===== 手机端：分类折叠按钮（桌面隐藏），阿里云帮助中心栏目标题条风格 ===== */
.tree-toggle {
  display: none; width: 100%; height: 46px; margin-bottom: 0;
  border: none; border-bottom: 1px solid #f0f1f3; border-radius: 0; background: #fff;
  font-size: 14.5px; font-weight: 600; color: #23272e; cursor: pointer; text-align: center; padding: 0 14px;
}
.tree-toggle-icon { margin-right: 8px; color: #464c59; font-style: normal; }
.tree-toggle:active { background: #f7f8fa; }

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed; right: 18px; bottom: 88px; z-index: 90;
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid #e0e3ea;
  background: rgba(255,255,255,.95); color: #464c59; font-size: 18px;
  box-shadow: 0 3px 12px rgba(0,0,0,.12); cursor: pointer;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:active { background: #eaf1fc; }

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  /* 框架固定：栏目位置不变，仅收窄列宽 */
  .page-body { grid-template-columns: 220px minmax(0, 1fr) 210px; gap: 24px; }
  .page-body.has-toc { grid-template-columns: 220px minmax(0, 1fr) 200px 200px; gap: 24px; }
  .page-body.no-sidebar { grid-template-columns: minmax(0, 1fr) 210px; }
}
@media (max-width: 900px) {
  .header-inner { gap: 12px; }
  .header-search { width: 260px; }
  /* 分类树 → 折叠面板；目录/榜单移到内容下方（手机/平板竖屏） */
  /* minmax(0,1fr)：禁止超长内容（如目录长标题）把栅格轨道撑爆 */
  .page-body, .page-body.has-toc { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc-wrap { grid-column: 1 / -1; padding: 0; margin-bottom: 16px; }
  .toc-wrap, .main, .sidebar { min-width: 0; }
  /* 短内容页：取消最小高度拉伸，否则 grid 行被 min-height 撑高，标题条下出现大片空白 */
  .page-body { min-height: 0; align-content: start; }
  .toc { position: static; }
  .tree-toggle { display: block; order: -3; text-align: left; padding: 0 0; }
  .sidebar { order: -2; }
  /* 标题条下方收紧留白（原 main 上内边距 + 标题上外边距 ≈ 48px） */
  .main { padding-top: 6px; }
  .section-title { margin-top: 14px; }
  /* 手机端精简（参考阿里云帮助中心）：不要推荐/趋势榜单、不要顶部导航 */
  .rank-wrap { display: none; }
  .header-nav { display: none; }
  /* 分类折叠面板：阿里云风格白色简洁列表（栏目标题条下方展开） */
  .sidebar {
    display: none; border-right: none;
    border: none; border-radius: 0;
    padding: 0; margin: 0 0 4px; background: #fff;
  }
  .sidebar.open { display: block; }
  .sidebar .tree-item a { padding: 13px 8px; font-size: 14.5px; border-radius: 0; border-bottom: 1px solid #f5f6f7; }
  .sidebar .tree-item a:hover { background: #fff; }
  .sidebar .tree-count { display: inline; }
}
@media (max-width: 600px) {
  body { font-size: 13.5px; }
  /* 头部两行：第一行 logo+搜索（导航已隐藏） */
  .header-inner { flex-wrap: wrap; height: auto; padding: 10px 16px 10px; row-gap: 0; }
  .header-search { order: 3; width: 100%; margin-top: 8px; }
  .header-search input { height: 38px; }
  .header-search button { height: 38px; }
  /* 轮播紧凑化 */
  .hero-carousel { height: 180px; }
  .hero-content { padding: 0 20px; }
  .hero-title { font-size: 21px; margin-bottom: 6px; }
  .hero-sub { font-size: 12px; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
  .hero-btn { padding: 7px 20px; font-size: 12.5px; }
  .hero-dots { bottom: 10px; }
  /* 内容区 */
  .page-body { padding: 0 16px; }
  .main { padding: 6px 0 40px; }
  .page-title { font-size: 20px; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .home-card { padding: 14px; }
  .article-item { flex-direction: column; gap: 4px; padding: 12px 2px; }
  .article-side { align-items: flex-start; }
  .article-date { padding-top: 0; }
  .breadcrumb-inner { padding: 8px 16px; }
  /* 点击目标 ≥40px */
  .tree-item a { padding: 10px 8px; font-size: 14px; }
  .tree-arrow { padding: 0 6px 0 0; font-size: 13px; }
}

/* ===== 自定义 Logo（后台站点设置上传/指定） ===== */
.logo-img { height: 30px; width: auto; display: inline-block; vertical-align: middle; border-radius: 4px; }
.footer-logo .logo-img { height: 26px; margin-right: 8px; }

/* ===== 前台分页条（首页最新文档） ===== */.pager { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 6px; padding: 14px 2px 4px; }
.pg-info { color: #a2a9b3; font-size: 12.5px; margin-right: 8px; }
.pg { display: inline-block; padding: 4px 12px; border: 1px solid #e0e3e8; border-radius: 5px;
  background: #fff; color: #464c59; font-size: 12.5px; text-decoration: none; }
a.pg:hover { border-color: #2674e0; color: #2674e0; }
.pg.cur { border-color: #2674e0; background: #2674e0; color: #fff; }
.pg.disabled { color: #c3c9d2; }
.pg-ellipsis { color: #a2a9b3; font-size: 12.5px; padding: 0 2px; }

/* ===== 字号调节按钮（文章页 meta 行右侧） ===== */.font-ctrl { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; }
.font-ctrl button {
  border: 1px solid #dcdfe5; background: #fff; color: #464c59;
  border-radius: 6px; padding: 2px 9px; font-size: 12.5px; cursor: pointer; line-height: 1.5;
}
.font-ctrl button:hover { color: #2674e0; border-color: #2674e0; }
.font-ctrl button:disabled { opacity: .4; cursor: default; color: #464c59; border-color: #dcdfe5; }

/* ===== 防横向溢出保险 ===== */
body { overflow-x: clip; }
.header-nav { min-width: 0; }

/* ===== 手机/平板（≤900px）：目录卡片置顶、导航横滑 ===== */
@media (max-width: 900px) {
  /* 目录移到文章正文前面，做成可折叠卡片（阿里云帮助风格） */
  .page-body.has-toc .toc-wrap { order: -1; padding-top: 16px; }
  .sidebar { order: -2; }
  .toc {
    position: static; border-left: none;
    border: 1px solid #e8eaee; border-radius: 8px; background: #fafbfc; padding: 10px 12px;
  }
  .toc-title { cursor: pointer; position: relative; padding: 2px 24px 6px 4px; user-select: none; }
  .toc-title::after {
    content: '▾'; position: absolute; right: 4px; top: 2px; color: #9aa2ad;
    transition: transform .2s; font-size: 12px; transform: rotate(-90deg);
  }
  .toc.open .toc-title::after { transform: rotate(0); }
  .toc ul { display: none; }
  .toc.open ul { display: block; }
  .toc ul { max-height: 42vh; }
  /* 手机端目录允许换行：桌面端的 nowrap+ellipsis 会用超长标题撑爆页面 */
  .toc li a { padding: 7px 4px; font-size: 13px; white-space: normal; overflow: visible; text-overflow: clip; display: block; }
  /* 导航已隐藏：搜索框占满头部剩余空间 */
  .header-inner { gap: 16px; }
  .header-search { flex: 1; width: auto; max-width: 420px; margin-left: auto; }
}

/* ===== 手机（≤600px）：头部三行 = logo+搜索 / 横滑导航 ===== */
@media (max-width: 600px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 10px 16px; row-gap: 0; }
  .logo { order: 1; }
  .header-search { order: 2; flex: 1; width: auto; margin-left: 12px; }
  .header-search input { height: 36px; }
  .header-search button { height: 36px; padding: 0 12px; }
  .header-search button { white-space: nowrap; }
  /* 手机正文呼吸感：两侧 16px，标题紧凑 */
  .page-body { padding: 0 16px; }
  .page-title { font-size: 20px; line-height: 1.4; }
  .article-meta { flex-wrap: wrap; gap: 10px; font-size: 12px; }
  .font-ctrl { margin-left: 0; }
}

/* ===== 文章反馈（该文章对您有帮助吗？） ===== */
.feedback-bar { margin-top: 34px; }
.fb-divider {
  display: flex; align-items: center; gap: 14px; color: #8b919d; font-size: 13px;
  margin-bottom: 16px;
}
.fb-divider::before, .fb-divider::after {
  content: ''; flex: 1; height: 1px; background: #eef0f3;
}
.fb-btns { display: flex; justify-content: center; gap: 16px; }
.fb-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 20px; border: 1px solid #d4d7de; border-radius: 20px;
  background: #fff; color: #575d6c; font-size: 13.5px; cursor: pointer;
  transition: all .15s;
}
.fb-btn svg { color: #8b919d; transition: color .15s; }
.fb-btn:hover:not(:disabled) { border-color: #2674e0; color: #2674e0; background: #f2f6fd; }
.fb-btn:hover:not(:disabled) svg { color: #2674e0; }
.fb-btn:disabled { opacity: .55; cursor: default; }
.fb-voted .fb-btn[data-vote="1"]:disabled, .fb-btn.fb-picked:disabled { opacity: 1; }
.fb-done { text-align: center; color: #1a7f4b; font-size: 13.5px; margin-top: 4px; }