/* 版权所有 © 八艾云 (www.8a.hk) 保留所有权利 */
/* ============================================================
   help.css — 帮助中心 Hero (/help, /help.html?q=)
   Hero 换成全站共用的 .byc-phero (浅色), 这里只补搜索框与热门标签。
   下面的分类/文档区仍走 content.css, 未动。
   ============================================================ */

/* 搜索是帮助中心的主入口, 给它比正文更大的体量 */
.help-search {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 520px;
  margin: 22px 0 14px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-md);
  background: #fff;
  box-shadow: var(--byc-sd-sm);
  overflow: hidden;
  transition: border-color .18s, box-shadow .18s;
}
.help-search:focus-within { border-color: var(--byc-primary); box-shadow: 0 0 0 3px var(--byc-primary-50); }
.help-search input {
  flex: 1;
  min-width: 0;
  height: 48px;
  padding: 0 16px;
  border: 0;
  background: transparent;
  color: var(--byc-text);
  font-size: 14px;
  outline: none;
}
.help-search input::placeholder { color: var(--byc-text-mut); }
.help-search button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: none;
  padding: 0 22px;
  border: 0;
  background: var(--byc-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color .18s;
}
.help-search button:hover { background: var(--byc-primary-dark); }
.help-search button svg { width: 17px; height: 17px; }

.help-hot { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.help-hot > span { color: var(--byc-text-mut); font-size: 13px; }
.help-hot a {
  padding: 5px 12px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-full);
  background: #fff;
  color: var(--byc-text-sec);
  font-size: 12.5px;
  transition: border-color .18s, color .18s;
}
.help-hot a:hover { border-color: var(--byc-primary); color: var(--byc-primary); }

@media (max-width: 767px) {
  .help-search { max-width: none; margin-top: 18px; }
  .help-search input { height: 44px; font-size: 13.5px; }
  .help-search button { padding: 0 16px; }
  /* 窄屏热门标签只保留前 3 个, 免得堆成两行把内容顶下去 */
  .help-hot a:nth-child(n + 5) { display: none; }
}


/* ============================================================
   分类 / 热门 (2026-08 重做)
   旧的 .byc-help-sec-head / .byc-help-cat* / .byc-help-hot* 在 content.css 里,
   模板已不再引用 —— 那套是 5 列 226×408 的瘦长卡 + 居中三层标题。
   .byc-help-sec / -alt 两个版面骨架仍复用。
   ============================================================ */

/* 小节头: 左对齐一行, 不再是居中的徽章+大标题+描述三件套 */
.hc-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 24px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--byc-border);
}
.hc-head h2 { margin: 0; color: var(--byc-text); font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
.hc-head span { color: var(--byc-text-mut); font-size: 13.5px; }

/* ---------- 分类卡 ---------- */
.hc-cats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 899px) { .hc-cats { grid-template-columns: minmax(0, 1fr); } }

.hc-card {
  display: flex;
  flex-direction: column;
  padding: 20px 22px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-xl);
  background: #fff;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.hc-card:hover { border-color: var(--hc, var(--byc-primary)); box-shadow: var(--byc-sd-md); transform: translateY(-2px); }

.hc-card-top { display: flex; align-items: center; gap: 14px; }
.hc-ico {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: var(--byc-r-md);
  background: var(--hc-bg, var(--byc-primary-50));
  color: var(--hc, var(--byc-primary));
}
.hc-ico svg { width: 22px; height: 22px; }
.hc-card-copy { flex: 1; min-width: 0; }
.hc-card-copy b { display: block; color: var(--byc-text); font-size: 17px; font-weight: 700; line-height: 1.4; }
.hc-card-copy i { color: var(--byc-text-mut); font-size: 13px; font-style: normal; }
.hc-arrow { width: 18px; height: 18px; flex: none; color: var(--byc-border-strong); transition: color .2s, transform .2s; }
.hc-card:hover .hc-arrow { color: var(--hc, var(--byc-primary)); transform: translateX(3px); }

/* 子分类: 横排胶囊, 带各自的文章数 */
.hc-subs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--byc-border);
}
.hc-sub {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-full);
  background: var(--byc-bg-light);
  color: var(--byc-text-sec);
  font-size: 13px;
  transition: border-color .18s, background-color .18s, color .18s;
}
.hc-sub:hover { border-color: var(--hc, var(--byc-primary)); background: #fff; color: var(--hc, var(--byc-primary)); }
.hc-sub em { color: var(--byc-text-mut); font-size: 11.5px; font-style: normal; font-variant-numeric: tabular-nums; }
.hc-sub:hover em { color: inherit; opacity: .7; }

/* 第 6 格: 5 个分类是奇数, 这格放真的有用的出口 */
.hc-ask {
  justify-content: center;
  gap: 16px;
  border-style: dashed;
  border-color: var(--byc-border-strong);
  background: var(--byc-bg-light);
}
.hc-ask:hover { border-color: var(--byc-primary); box-shadow: none; transform: none; }
.hc-ask-copy b { display: block; margin-bottom: 5px; color: var(--byc-text); font-size: 17px; font-weight: 700; }
.hc-ask-copy span { color: var(--byc-text-sec); font-size: 13.5px; line-height: 1.7; }
.hc-ask-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.hc-ask-pri, .hc-ask-out {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  border-radius: var(--byc-r-md);
  font-size: 14px;
  font-weight: 600;
  transition: background-color .18s, border-color .18s, color .18s;
}
.hc-ask-pri { background: var(--byc-primary); color: #fff; }
.hc-ask-pri:hover { background: var(--byc-primary-dark); }
.hc-ask-out { border: 1px solid var(--byc-border-strong); background: #fff; color: var(--byc-text-sec); }
.hc-ask-out:hover { border-color: var(--byc-primary); color: var(--byc-primary); }

/* ---------- 热门文章 ---------- */
.hc-hot { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 899px) { .hc-hot { grid-template-columns: minmax(0, 1fr); } }
.hc-hot-item {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 14px 16px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.hc-hot-item:hover { border-color: var(--byc-primary-100); box-shadow: var(--byc-sd-sm); }
.hc-rank {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: var(--byc-r-sm);
  background: var(--byc-bg-light);
  color: var(--byc-text-mut);
  font-size: 12.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
/* 前三名: 排名本身是信息, 不是装饰 */
.hc-hot-item:nth-child(-n + 3) .hc-rank { background: var(--byc-primary); color: #fff; }
.hc-hot-body { flex: 1; min-width: 0; }
.hc-hot-body b { display: block; color: var(--byc-text); font-size: 14.5px; font-weight: 600; line-height: 1.5; }
.hc-hot-item:hover .hc-hot-body b { color: var(--byc-primary); }
.hc-hot-body span {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  margin-top: 4px;
  color: var(--byc-text-mut);
  font-size: 12.5px;
  line-height: 1.6;
}
.hc-views {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: none;
  padding-top: 3px;
  color: var(--byc-text-mut);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.hc-views svg { width: 13px; height: 13px; }

@media (max-width: 599px) {
  .hc-head h2 { font-size: 21px; }
  .hc-card { padding: 16px 16px; }
  .hc-ask-btns { width: 100%; }
  .hc-ask-pri, .hc-ask-out { flex: 1; }
}

/* ============================================================
   分类页 /help/class/N.html (2026-08 重做)
   ============================================================ */

/* 面包屑收进 Hero, 原来它吊在灰底上单占一行 */
.hcl-crumb {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  padding-top: 22px;
  color: var(--byc-text-mut);
  font-size: 13px;
}
.hcl-crumb a { color: var(--byc-text-sec); transition: color .18s; }
.hcl-crumb a:hover { color: var(--byc-primary); }
.hcl-crumb .sep { color: var(--byc-border-strong); }

.pg-hero[data-theme="help"] .pg-hero-inner { padding-top: 30px; }
/* 徽章在这页是可点的父分类 */
a.pg-hero-badge { transition: border-color .18s, background-color .18s; }
a.pg-hero-badge:hover { border-color: var(--byc-primary); background: var(--byc-primary-100); }
.pg-hero .help-search { margin-bottom: 0; }

.help-inner.has-hero { padding-top: 32px; }
@media (min-width: 768px) { .help-inner.has-hero { padding-top: 36px; } }

/* 侧栏跟随滚动 —— 它比主区高, 不跟随就是一根吊着的长条。
   限定在 .help-list-layout 下, 且 help.css 只有帮助中心加载, 不影响复用 .help-sidebar 的新闻页 */
.help-list-layout .help-sidebar { position: sticky; top: 90px; align-self: start; }

.hcl-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--byc-border);
}
.hcl-head h2 { margin: 0; color: var(--byc-text); font-size: 19px; font-weight: 700; }
.hcl-head span { color: var(--byc-text-mut); font-size: 13px; }

/* 条目: 与 /help/ 首页热门列表同形制, 补上一直没显示的 summary 与日期 */
.hcl-list { display: flex; flex-direction: column; gap: 10px; }
.hcl-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  background: var(--byc-bg-light);
  transition: border-color .2s, background-color .2s, box-shadow .2s;
}
.hcl-item:hover { border-color: var(--byc-primary-100); background: #fff; box-shadow: var(--byc-sd-sm); }
.hcl-body { flex: 1; min-width: 0; }
.hcl-body b { display: block; color: var(--byc-text); font-size: 15px; font-weight: 600; line-height: 1.5; }
.hcl-item:hover .hcl-body b { color: var(--byc-primary); }
/* 父分类页是聚合视图, 标出每篇属于哪个子分类 */
.hcl-tag {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  border-radius: var(--byc-r-full);
  background: var(--byc-primary-50);
  color: var(--byc-primary);
  font-size: 11.5px;
  font-style: normal;
  font-weight: 600;
  vertical-align: 2px;
}
.hcl-item:hover .hcl-tag { background: var(--byc-primary-100); }
.hcl-sum {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  margin-top: 5px;
  color: var(--byc-text-sec);
  font-size: 13px;
  line-height: 1.7;
}
.hcl-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex: none;
  padding-top: 2px;
  color: var(--byc-text-mut);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.hcl-views { display: inline-flex; align-items: center; gap: 4px; }
.hcl-views svg { width: 13px; height: 13px; }

/* 出口卡: 与 /help/ 首页第 6 格同一套按钮 */
.hcl-ask {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px 20px;
  margin-top: 22px;
  padding: 18px 20px;
  border: 1px dashed var(--byc-border-strong);
  border-radius: var(--byc-r-xl);
  background: var(--byc-bg-light);
}
.hcl-ask-copy b { display: block; margin-bottom: 4px; color: var(--byc-text); font-size: 15.5px; font-weight: 700; }
.hcl-ask-copy span { color: var(--byc-text-sec); font-size: 13.5px; }
.hcl-ask-btns { display: flex; flex-wrap: wrap; gap: 10px; }

@media (max-width: 767px) {
  .hcl-crumb { padding-top: 16px; font-size: 12.5px; }
  .hcl-item { flex-direction: column; gap: 8px; padding: 14px; }
  .hcl-meta { flex-direction: row; align-items: center; gap: 12px; }
  .hcl-ask { flex-direction: column; align-items: stretch; }
  .hcl-ask-btns { width: 100%; }
  .hcl-ask-btns a { flex: 1; }
}

/* ============================================================
   文章详情页 /help/article/N.html (2026-08 重做)
   Hero 与分类页共用 .pg-hero[data-theme="help"]; 标题/摘要/时间都进 Hero,
   正文区只留 <article>, 宽度收到中文可读区间。
   ============================================================ */
.hda-hero { padding-top: 26px; }
.hda-title { font-size: clamp(26px, 2.4vw, 34px); }
.pg-hero .hcl-crumb-cur {
  display: inline-block;
  max-width: 320px;
  overflow: hidden;
  color: var(--byc-text-mut);
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: bottom;
}
.hda-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  margin-top: 20px;
  color: var(--byc-text-mut);
  font-size: 13px;
}
.hda-meta-i { display: inline-flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
.hda-meta-i svg { width: 14px; height: 14px; }

/* 正文: 867 宽的中文一行 55 字, 收到 42~46 字 */
.hda-article {
  padding: 4px 0 8px;
}
.hda-article .help-detail-content { max-width: 780px; }

/* 上一篇 / 下一篇 —— 既是导航, 也是给爬虫的同栏目内链 */
.hda-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}
@media (max-width: 599px) { .hda-nav { grid-template-columns: minmax(0, 1fr); } }
.hda-nav-i {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  background: var(--byc-bg-light);
  transition: border-color .2s, background-color .2s, box-shadow .2s;
}
.hda-nav-i.is-next { align-items: flex-end; text-align: right; }
a.hda-nav-i:hover { border-color: var(--byc-primary-100); background: #fff; box-shadow: var(--byc-sd-sm); }
.hda-nav-k { display: inline-flex; align-items: center; gap: 5px; color: var(--byc-text-mut); font-size: 12.5px; }
.hda-nav-k svg { width: 13px; height: 13px; }
.hda-nav-i b {
  display: block;
  overflow: hidden;
  max-width: 100%;
  color: var(--byc-text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}
a.hda-nav-i:hover b { color: var(--byc-primary); }
.hda-nav-i.is-none { color: var(--byc-text-mut); font-size: 13px; justify-content: center; }

/* 相关文档: 带摘要的两列, 内链比原来的纯标题列表密 */
.hda-rel { margin-top: 26px; }
.hda-rel-title {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--byc-border);
  color: var(--byc-text);
  font-size: 17px;
  font-weight: 700;
}
.hda-rel-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 767px) { .hda-rel-list { grid-template-columns: minmax(0, 1fr); } }
.hda-rel-i {
  min-width: 0;
  padding: 13px 15px;
  border: 1px solid var(--byc-border);
  border-radius: var(--byc-r-lg);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.hda-rel-i:hover { border-color: var(--byc-primary-100); box-shadow: var(--byc-sd-sm); }
.hda-rel-i b { display: block; color: var(--byc-text); font-size: 14.5px; font-weight: 600; line-height: 1.5; }
.hda-rel-i:hover b { color: var(--byc-primary); }
.hda-rel-i span {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  margin-top: 4px;
  color: var(--byc-text-mut);
  font-size: 12.5px;
  line-height: 1.6;
}

@media (max-width: 767px) {
  .hda-meta { gap: 6px 14px; margin-top: 16px; font-size: 12.5px; }
  .pg-hero .hcl-crumb-cur { max-width: 160px; }
}