/* ==========================================================================
   产品说明书中心（文档站）—— Stripe Docs 风格
   ========================================================================== */

/* ---------- 文档切换菜单条（与说明书中心同款胶囊） ---------- */
.docs-menu-bar {
  background: var(--bg-soft);
  border-top: 1px solid var(--ink-150);
  border-bottom: 1px solid var(--ink-200);
  padding: 16px 0;
}
.docs-menu-bar .filter-bar { background: #fff; margin-bottom: 0; }
.mc-menu .filter-chip.dt-on {
  background: var(--brand-600); color: #fff; font-weight: 700;
  box-shadow: var(--sh-sm);
}

/* ---------- 文档区主体（与首屏同宽居中） ---------- */
.docs-shell { padding: 32px 0 0; }
.docs-layout {
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.docs-side {
  position: sticky; top: calc(var(--header-h) + 16px);
  max-height: calc(100vh - var(--header-h) - 32px);
  overflow-y: auto; overscroll-behavior: contain;
  background: #fff; border: 1px solid var(--ink-200);
  border-radius: 14px; padding-bottom: 6px;
}
.docs-side-head { padding: 16px 16px 6px; }
.ms-title {
  font-size: .78rem; font-weight: 700; color: var(--ink-500);
  letter-spacing: .1em; text-transform: uppercase; padding: 0 8px 12px;
}
.docs-side-foot { margin: 18px 16px 22px; padding: 14px 0 0; border-top: 1px solid var(--ink-200); font-size: .8rem; }
.docs-side-foot p { margin: 0 0 6px; color: var(--ink-500); }
.docs-side-foot a { font-size: .82rem; font-weight: 600; }

/* 文档树导航 */
.docs-nav { display: flex; flex-direction: column; gap: 3px; padding: 0 12px 12px; }
.dn-group { margin-bottom: 2px; }
.dn-group-head {
  display: flex; align-items: center; gap: 8px;
  width: 100%; text-align: left;
  padding: 9px 11px; border: 0; border-radius: var(--r-md);
  background: transparent; cursor: pointer;
  font-family: inherit; color: var(--ink-800);
  transition: background .15s ease, color .15s ease;
}
.dn-group-head:hover { background: #fff; color: var(--brand-700); }
.dn-caret {
  flex-shrink: 0; width: 14px; font-size: .7rem; color: var(--brand-500);
  transition: transform .18s ease; display: inline-block;
}
.dn-group.dn-collapsed .dn-caret { transform: rotate(-90deg); }
.dn-group.dn-collapsed .dn-group-body { display: none; }
.dn-no {
  flex-shrink: 0; min-width: 24px; text-align: center;
  font-family: var(--font-num); font-size: .76rem; font-weight: 800;
  color: var(--brand-600); background: var(--brand-50);
  border: 1px solid var(--brand-100); border-radius: var(--r-sm);
  padding: 1px 6px;
}
.dn-name { font-size: .9rem; font-weight: 600; line-height: 1.35; flex: 1; min-width: 0; }
.dn-group-body {
  display: flex; flex-direction: column; gap: 2px;
  margin-left: 16px; padding-left: 10px;
  border-left: 1px solid var(--ink-200);
}
.dn-leaf {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: var(--r-md);
  color: var(--ink-600); text-decoration: none; font-size: .87rem;
  transition: background .14s ease, color .14s ease;
  border-left: 2px solid transparent;
}
.dn-leaf:hover { background: #fff; color: var(--brand-700); }
.dn-leaf.mn-active { background: var(--brand-100); color: var(--brand-800); font-weight: 700; border-left-color: var(--brand-600); }
.dn-leaf .dn-no {
  min-width: 20px; font-size: .72rem; padding: 0 5px;
  color: var(--ink-500); background: var(--ink-50); border-color: var(--ink-150);
}
.dn-leaf .dn-name { font-size: .86rem; font-weight: 400; }
.dn-leaf.mn-active .dn-name { font-weight: 700; }
.dn-single {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 11px; border-radius: var(--r-md);
  color: var(--ink-600); text-decoration: none; font-size: .88rem;
  transition: background .15s ease, color .15s ease;
  border-left: 3px solid transparent;
}
.dn-single:hover { background: #fff; color: var(--brand-700); }
.dn-single .dn-name { font-weight: 500; flex: 1; min-width: 0; }
.dn-single.mn-active { background: var(--brand-100); color: var(--brand-800); font-weight: 700; }
.dn-single.dn-current {
  background: var(--brand-50); color: var(--brand-800);
  border-left-color: var(--brand-600); font-weight: 700;
}
.dn-single.dn-current .dn-no {
  color: #fff; background: var(--brand-600); border-color: var(--brand-600);
}
.dn-tag {
  flex-shrink: 0; font-size: .68rem; font-weight: 600;
  color: var(--ink-400); background: var(--ink-50);
  border: 1px solid var(--ink-150); border-radius: var(--r-full);
  padding: 1px 8px;
}
.dn-leaf .dn-tag { margin-left: auto; }

.docs-main { padding: 0 0 70px; min-width: 0; }
.docs-body { max-width: 820px; }

/* ---------- 说明书中心首页：胶囊标签菜单（同常见问题页 filter-bar 样式） ---------- */
.mc-menu { margin-bottom: 0; }
.mc-menu .filter-chip {
  text-decoration: none;
  display: inline-flex; align-items: center;
  white-space: nowrap;
}
.mc-menu .filter-chip:hover {
  background: var(--brand-600); color: #fff; box-shadow: var(--sh-sm);
}


/* 文档块标题 */
.doc-block-title {
  margin-bottom: 24px; padding: 22px 26px;
  background: linear-gradient(120deg, var(--brand-700), var(--brand-900));
  border-radius: var(--r-lg); color: #fff;
}
.doc-block-title .mn-badge { background: rgba(255,255,255,.2); border-color: rgba(255,255,255,.35); color: #fff; }
.doc-block-title h2 { margin: 0 0 4px; color: #fff; font-size: 1.5rem; border: 0; padding: 0; }
.doc-block-title .mn-en { color: rgba(255,255,255,.72); }

/* 占位文档 */
.doc-placeholder { background: #fff; border: 1px dashed var(--ink-250); border-radius: var(--r-lg); }
.doc-coming {
  text-align: center; padding: 46px 26px;
}
.doc-coming-icon {
  width: 64px; height: 64px; margin: 0 auto 16px;
  border-radius: 50%; background: var(--brand-50);
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-400);
}
.doc-coming-icon svg { width: 30px; height: 30px; }
.doc-coming h3 { margin: 0 0 8px; font-size: 1.15rem; color: var(--ink-800); }
.doc-coming p { margin: 0 auto; max-width: 460px; color: var(--ink-500); line-height: 1.8; }
.doc-coming p a { color: var(--brand-600); font-weight: 600; }

/* 软件文档的下载按钮区 */
.mn-soft-cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 20px 0 4px; }


/* ---------- 搜索条 ---------- */
.mn-searchbar {
  position: sticky; top: var(--header-h); z-index: 60;
  background: rgba(255,255,255,.95);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--ink-200);
  padding: 16px 0 12px;
}
.mn-search-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; margin-top: 9px;
  font-size: .84rem; color: var(--ink-500);
}
.mn-search-count { font-variant-numeric: tabular-nums; }
.mn-search-count b { color: var(--brand-600); font-weight: 700; }
.mn-search-clear {
  font-family: inherit; font-size: .82rem; font-weight: 600;
  background: var(--ink-100); color: var(--ink-600);
  border: 0; padding: 5px 14px; border-radius: var(--r-full); cursor: pointer;
}
.mn-search-clear:hover { background: var(--ink-200); color: var(--ink-900); }

/* 搜索命中高亮 */
mark.mn-hit {
  background: #fff3bf; color: inherit;
  padding: 1px 2px; border-radius: 3px;
  box-shadow: 0 0 0 1px #ffd97a;
}
.mn-chapter.dimmed { opacity: .32; }
.mn-chapter.hit-flash > .mn-chapter-head { box-shadow: -3px 0 0 0 var(--gold-500); }

/* ---------- 章节 ---------- */
.mn-chapter { margin-bottom: 54px; scroll-margin-top: calc(var(--header-h) + 80px); }
.mn-chapter-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  padding: 18px 22px; margin-bottom: 20px;
  background: linear-gradient(120deg, var(--brand-600), var(--brand-800));
  border-radius: var(--r-lg);
}
.mn-badge {
  display: inline-block; font-size: .76rem; font-weight: 700;
  background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.35);
  color: #fff; padding: 3px 11px; border-radius: var(--r-full); margin-bottom: 8px;
}
.mn-chapter-head h2 {
  margin: 0 0 3px; font-size: 1.45rem; color: #fff;
  border: 0; padding: 0;
}
.mn-en { margin: 0; font-size: .82rem; color: rgba(255,255,255,.72); font-style: italic; }
.mn-pagecount {
  flex-shrink: 0; font-size: .8rem; color: var(--brand-100);
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.24);
  padding: 5px 12px; border-radius: var(--r-full); white-space: nowrap;
}

.mn-intro {
  font-size: .96rem; color: var(--ink-700);
  background: var(--brand-50); border-left: 3px solid var(--brand-400);
  padding: 13px 18px; border-radius: 0 var(--r-md) var(--r-md) 0; margin-bottom: 24px;
}
.mn-note {
  background: var(--warn-50); border: 1px solid #fde68a; color: #7c4a03;
  padding: 13px 18px; border-radius: var(--r-md); margin: 18px 0; font-size: .9rem;
}
.mn-note-warn { background: var(--err-50); border-color: #fecaca; color: #991b1b; }

/* ---------- 快捷安装流程 ---------- */
.mn-quick {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 10px; margin-bottom: 8px;
}
.mn-qstep {
  display: flex; align-items: flex-start; gap: 11px;
  background: #fff; border: 1px solid var(--ink-200);
  border-radius: var(--r-md); padding: 13px 15px;
  font-size: .9rem; color: var(--ink-700); line-height: 1.6;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.mn-qstep:hover { border-color: var(--brand-300); box-shadow: var(--sh-sm); }
.mn-qnum {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--brand-600); color: #fff;
  display: grid; place-items: center;
  font-size: .82rem; font-weight: 800; font-family: var(--font-num);
}

/* ---------- 正文排版 ---------- */
.mn-sec { margin-bottom: 30px; }
.mn-sec-t {
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 14px; padding-bottom: 9px;
  border-bottom: 1px solid var(--ink-200);
  font-size: 1.18rem; color: var(--ink-900);
}
.mn-sec-t span {
  font-family: var(--font-num); font-size: .82rem; font-weight: 700;
  color: var(--brand-600); background: var(--brand-50);
  border: 1px solid var(--brand-100);
  padding: 2px 9px; border-radius: var(--r-sm); flex-shrink: 0;
}
.mn-sub-t { margin: 20px 0 8px; font-size: 1rem; color: var(--brand-800); }
.docs-main h4 { margin: 20px 0 7px; font-size: .98rem; color: var(--ink-800); }
.docs-main p { margin: 0 0 12px; color: var(--ink-700); line-height: 1.85; font-size: .95rem; }
.docs-main strong { color: var(--ink-900); font-weight: 700; }

.mn-ul, .mn-ol { margin: 0 0 16px; padding-left: 1.5em; }
.mn-ul li, .mn-ol li { margin: 7px 0; color: var(--ink-700); line-height: 1.8; font-size: .94rem; }
.mn-ul li::marker { color: var(--brand-400); }
.mn-ol li::marker { color: var(--brand-600); font-weight: 700; }

/* ---------- 表格 ---------- */
.mn-table { margin: 18px 0 22px; }
.mn-table table.data { font-size: .9rem; }
.mn-table th, .mn-table td { padding: 11px 14px; }
.mn-table thead th { background: var(--brand-50); color: var(--brand-900); }
.mn-fault td:first-child { font-weight: 600; color: var(--ink-900); white-space: nowrap; }
.mn-fault td:last-child { line-height: 1.75; }

/* ---------- 常见问题（第七章） ---------- */
.mn-faq {
  background: #fff; border: 1px solid var(--ink-200);
  border-radius: var(--r-lg); padding: 22px 24px; margin-bottom: 16px;
}
.mn-faq-q {
  display: flex; align-items: baseline; gap: 11px;
  margin: 0 0 14px; padding-bottom: 11px;
  border-bottom: 1px solid var(--ink-100);
  font-size: 1.06rem; color: var(--ink-900);
}
.mn-faq-q span {
  flex-shrink: 0; font-family: var(--font-num); font-size: .8rem; font-weight: 700;
  color: #fff; background: var(--brand-600);
  padding: 2px 9px; border-radius: var(--r-sm);
}

/* ---------- 附赠软件（第八章） ---------- */
.mn-soft {
  background: #fff; border: 1px solid var(--ink-200);
  border-left: 3px solid var(--gold-500);
  border-radius: var(--r-lg); padding: 22px 24px; margin-bottom: 16px;
}
.mn-soft-t {
  display: flex; align-items: baseline; gap: 11px;
  margin: 0 0 12px; padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-100);
  font-size: 1.06rem; color: var(--ink-900);
}
.mn-soft-t span {
  flex-shrink: 0; font-family: var(--font-num); font-size: .8rem; font-weight: 700;
  color: var(--gold-700); background: var(--gold-100);
  border: 1px solid #f5d99a;
  padding: 2px 9px; border-radius: var(--r-sm);
}
.mn-soft-scope {
  background: var(--bg-soft); border-radius: var(--r-md);
  padding: 11px 15px; font-size: .89rem !important; margin-bottom: 14px !important;
}

/* 软件界面截图（产品图片，宽高自适应） */
.mn-soft-shot { margin: 0 0 16px; }
.mn-soft-shot > a {
  display: block;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.mn-soft-shot > a:hover { border-color: var(--brand-300); box-shadow: var(--sh-md); }
.mn-soft-shot img {
  width: 100%; height: auto; display: block;
  background: var(--ink-50);
}
.mn-soft-shot figcaption {
  margin: 9px 0 0; font-size: .8rem; color: var(--ink-500); text-align: center;
}
.mn-soft-shot figcaption a { color: var(--brand-600); font-weight: 600; }

/* ---------- 封面与时间轴 ---------- */
.mn-cover {
  background: linear-gradient(135deg, var(--brand-900), var(--brand-700));
  color: #fff; border-radius: var(--r-lg);
  padding: 28px 30px; margin-bottom: 26px;
}
.mn-cover h3 { color: #fff; font-size: 1.3rem; margin-bottom: 6px; }
.mn-cover-v { color: rgba(255,255,255,.85) !important; font-size: .88rem !important; margin-bottom: 4px !important; }
.mn-cover > p { color: rgba(255,255,255,.75) !important; font-size: .88rem !important; margin-bottom: 18px !important; }
.mn-cover .table-wrap { background: #fff; border: 0; border-radius: var(--r-md); overflow: hidden; }
.mn-cover .table-wrap th,
.mn-cover .table-wrap td { color: var(--ink-800); }

.mn-timeline { position: relative; padding-left: 26px; margin-bottom: 22px; }
.mn-timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(var(--brand-300), var(--ink-200));
}
.mn-tl { position: relative; margin-bottom: 13px; font-size: .92rem; color: var(--ink-700); line-height: 1.7; }
.mn-tl::before {
  content: ""; position: absolute; left: -25px; top: 7px;
  width: 10px; height: 10px; border-radius: 50%;
  background: #fff; border: 3px solid var(--brand-500);
}
.mn-yr {
  font-family: var(--font-num); font-weight: 700; color: var(--brand-700);
  margin-right: 8px;
}

/* ---------- 彩色插入块 ---------- */
.mn-insert {
  margin: 26px 0 30px; background: #fff;
  border: 1px solid var(--brand-200); border-radius: var(--r-xl);
  overflow: hidden; box-shadow: var(--sh-sm);
}
.mn-insert-head {
  padding: 14px 22px;
  background: linear-gradient(120deg, var(--brand-600), var(--brand-800));
  color: #fff;
}
.mn-insert-tag {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em;
  background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.35);
  color: #fff; padding: 2px 10px; border-radius: var(--r-full); margin-bottom: 7px;
}
.mn-insert-head h3 { margin: 0; font-size: 1.1rem; color: #fff; }
.mn-insert-body {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 24px; padding: 22px; align-items: start;
}
.mn-insert-img > a {
  display: block; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--ink-200); background: var(--ink-50);
  transition: box-shadow .2s ease;
}
.mn-insert-img > a:hover { box-shadow: var(--sh-md); }
.mn-insert-img img { width: 100%; height: auto; display: block; }
.mn-insert-img p { margin: 9px 0 0; font-size: .8rem; color: var(--ink-500); text-align: center; }
.mn-insert-img p a { color: var(--brand-600); font-weight: 600; }

.mn-insert-steps { counter-reset: step; margin: 0; padding: 0; list-style: none; }
.mn-insert-steps li {
  counter-increment: step; position: relative;
  padding: 0 0 14px 42px; margin: 0;
  font-size: .89rem; color: var(--ink-700); line-height: 1.7;
}
.mn-insert-steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--brand-600); color: #fff;
  display: grid; place-items: center;
  font-size: .85rem; font-weight: 800; font-family: var(--font-num);
}
.mn-insert-steps li:not(:last-child)::after {
  content: ""; position: absolute; left: 13.5px; top: 32px; bottom: 3px;
  width: 1px; background: var(--brand-100);
}
.mn-insert-steps li b { display: block; color: var(--ink-900); font-size: .95rem; margin-bottom: 2px; }
.mn-insert-note {
  padding: 13px 22px; background: var(--brand-50);
  border-top: 1px solid var(--brand-100);
  font-size: .87rem; color: var(--ink-700); line-height: 1.75;
}
.mn-insert-note strong { color: var(--brand-800); }

/* 耗材规格型 */
.mn-insert-spec .mn-insert-head { background: linear-gradient(120deg, var(--gold-700), #8a4f05); }
.mn-insert-spec .mn-insert-body { grid-template-columns: .58fr 1.42fr; }
.mn-sp-table { width: 100%; border-collapse: collapse; font-size: .87rem; }
.mn-sp-table thead th {
  background: var(--ink-50); color: var(--ink-700);
  font-size: .79rem; font-weight: 700; text-align: left;
  padding: 8px 11px; border-bottom: 1px solid var(--ink-200);
}
.mn-sp-table tbody td { padding: 10px 11px; border-bottom: 1px solid var(--ink-100); vertical-align: top; }
.mn-sp-table tbody tr:last-child td { border-bottom: 0; }
.mn-sp-table .sp-k { font-weight: 700; color: var(--ink-900); white-space: nowrap; width: 1%; background: #fcfcfd; }
.mn-sp-table .sp-v { font-weight: 700; color: var(--gold-700); white-space: nowrap; width: 1%; }
.mn-sp-table .sp-n { color: var(--ink-600); line-height: 1.65; }
.mn-sp-notes {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--gold-100); border-top: 1px solid var(--gold-100);
}
.mn-sp-note { background: #fffdf8; padding: 13px 20px; font-size: .85rem; color: var(--ink-700); line-height: 1.7; }
.mn-sp-note b { display: block; color: var(--gold-700); font-size: .87rem; margin-bottom: 3px; }
.mn-insert-spec .mn-insert-note { background: var(--gold-100); border-top-color: #f5d99a; }
.mn-insert-spec .mn-insert-note strong { color: var(--gold-700); }

/* ---------- 原手册扫描页（折叠） ---------- */
.mn-scan {
  margin-top: 30px; border: 1px solid var(--ink-200);
  border-radius: var(--r-lg); background: var(--bg-soft); overflow: hidden;
}
.mn-scan > summary {
  cursor: pointer; padding: 14px 20px; list-style: none;
  font-size: .9rem; font-weight: 600; color: var(--ink-700);
  display: flex; align-items: center; gap: 10px;
  transition: background .15s ease, color .15s ease;
}
.mn-scan > summary::-webkit-details-marker { display: none; }
.mn-scan > summary::before {
  content: ""; width: 0; height: 0; flex-shrink: 0;
  border-left: 6px solid var(--brand-500);
  border-top: 5px solid transparent; border-bottom: 5px solid transparent;
  transition: transform .2s ease;
}
.mn-scan[open] > summary::before { transform: rotate(90deg); }
.mn-scan > summary:hover { background: #fff; color: var(--brand-700); }
.mn-scan[open] > summary { border-bottom: 1px solid var(--ink-200); }

.mn-figs {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 18px; padding: 20px;
  background: var(--ink-100);
}
.mn-fig { margin: 0; }
.mn-fig > a {
  display: block; background: #fff; border: 1px solid var(--ink-200);
  border-radius: var(--r-md); overflow: hidden;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.mn-fig > a:hover { border-color: var(--brand-300); box-shadow: var(--sh-md); }
.mn-fig img { width: 100%; height: auto; display: block; }
.mn-fig figcaption {
  font-size: .78rem; color: var(--ink-500); text-align: center; padding: 8px 0 2px;
}
.mn-fig figcaption a { color: var(--brand-600); font-weight: 600; }

/* ---------- 返回顶部 ---------- */
.mn-to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 95;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--brand-700); color: #fff; border: 0;
  box-shadow: var(--sh-lg); cursor: pointer;
  display: none; align-items: center; justify-content: center;
}
.mn-to-top.show { display: flex; }
.mn-to-top:hover { background: var(--brand-800); }
.mn-to-top svg { width: 20px; height: 20px; }

/* ---------- 灯箱 ---------- */
.lb {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(8,18,34,.93);
  display: none; align-items: center; justify-content: center; padding: 40px 24px;
}
.lb.show { display: flex; }
.lb-img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: var(--r-sm); }
.lb-cap {
  position: fixed; left: 0; right: 0; bottom: 12px; text-align: center;
  color: #c8d6ea; font-size: .88rem; pointer-events: none;
}
.lb-close {
  position: fixed; top: 18px; right: 20px; width: 44px; height: 44px;
  border-radius: 50%; background: rgba(255,255,255,.14); color: #fff;
  border: 1px solid rgba(255,255,255,.3); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.lb-close:hover { background: rgba(255,255,255,.26); }
.lb-close svg { width: 20px; height: 20px; }
.lb-nav {
  position: fixed; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(255,255,255,.14); color: #fff;
  border: 1px solid rgba(255,255,255,.3); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.lb-nav:hover { background: rgba(255,255,255,.26); }
.lb-nav svg { width: 22px; height: 22px; }
.lb-prev { left: 18px; } .lb-next { right: 18px; }
.lb-count { position: fixed; top: 26px; left: 24px; color: #a8bcd4; font-size: .86rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .docs-layout { grid-template-columns: 1fr; gap: 22px; }
  .docs-side {
    position: static; max-height: none;
  }
  .docs-side-head { padding: 14px 16px 4px; }
  .docs-nav { flex-direction: row; flex-wrap: wrap; gap: 6px; padding: 8px 14px 16px; }
  .dn-group { flex-shrink: 0; }
  .dn-group-body { display: none; }
  .dn-group.dn-collapsed .dn-group-body { display: none; }
  .dn-group-head { border: 1px solid var(--ink-200); background: #fff; }
  .dn-single { border: 1px solid var(--ink-200); background: #fff; }
  .dn-tag { display: none; }
  .docs-side-foot { display: none; }
  .docs-main { padding: 0 0 60px; }
  .mn-figs { grid-template-columns: 1fr; }
  .mn-sp-notes { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .mn-insert-body, .mn-insert-spec .mn-insert-body { grid-template-columns: 1fr; }
  .mn-quick { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .docs-main { padding: 0 0 50px; }
  .mn-chapter-head { padding: 15px 17px; }
  .mn-chapter-head h2 { font-size: 1.2rem; }
  .mn-faq, .mn-soft { padding: 17px 16px; }
  .lb { padding: 16px 8px; }
  .lb-nav { width: 40px; height: 40px; }
  .lb-prev { left: 6px; } .lb-next { right: 6px; }
}