/* ============================================================
   Manual 主题样式 — VitePress 风格企业手册站
   浅色为主 / 深色模式（html.dark）/ 响应式（抽屉侧栏）
   ============================================================ */

:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f6f8fa;
  --c-bg-mute: #eff1f4;
  --c-border: #e5e7eb;
  --c-border-soft: #eceef1;
  --c-text: #1f2328;
  --c-text-2: #57606a;
  --c-text-3: #8b949e;
  --c-brand: #2563eb;
  --c-brand-weak: rgba(37, 99, 235, 0.1);
  --c-code-bg: #f6f8fa;
  --c-code-text: #24292e;
  --c-block-bg: #16171b;
  --c-block-text: #d5d8de;
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 6px 20px rgba(16, 24, 40, 0.07);
  --shadow-pop: 0 4px 16px rgba(16, 24, 40, 0.14);
  --header-h: 56px;
  --sidebar-w: 262px;
  --toc-w: 232px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

html.dark {
  --c-bg: #17171a;
  --c-bg-soft: #1d1d21;
  --c-bg-mute: #26262c;
  --c-border: #33333a;
  --c-border-soft: #2a2a30;
  --c-text: rgba(238, 238, 245, 0.92);
  --c-text-2: rgba(235, 235, 245, 0.62);
  --c-text-3: rgba(235, 235, 245, 0.4);
  --c-brand: #4d8bff;
  --c-brand-weak: rgba(77, 139, 255, 0.16);
  --c-code-bg: rgba(255, 255, 255, 0.08);
  --c-code-text: #d5d8de;
  --c-block-bg: #101114;
  --c-block-text: #d5d8de;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-pop: 0 4px 18px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-brand); text-decoration: none; }
a:hover { text-decoration: none; }
svg { flex-shrink: 0; }

kbd {
  display: inline-block;
  padding: 1px 5px;
  font-size: 11px;
  font-family: var(--font-mono);
  line-height: 1.5;
  color: var(--c-text-2);
  background: var(--c-bg-mute);
  border: 1px solid var(--c-border);
  border-radius: 4px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--c-brand);
  border-radius: 6px;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.88; color: #fff; }

/* ---------------- 顶栏 ---------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--header-h);
  background: color-mix(in srgb, var(--c-bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--c-border);
}
@supports not (background: color-mix(in srgb, #fff 50%, transparent)) {
  .navbar { background: var(--c-bg); }
}

.navbar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 8px;
  color: var(--c-text);
  font-weight: 600;
  font-size: 15.5px;
  white-space: nowrap;
}
.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--c-brand);
  background: var(--c-brand-weak);
  border-radius: 8px;
}

.nav-links { display: flex; align-items: center; gap: 4px; min-width: 0; }
.nav-links a {
  padding: 5px 10px;
  font-size: 14px;
  color: var(--c-text-2);
  border-radius: 6px;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--c-text); background: var(--c-bg-mute); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  color: var(--c-text-2);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.icon-btn:hover { color: var(--c-text); background: var(--c-bg-mute); }

.icon-moon { display: block; }
.icon-sun { display: none; }
html.dark .icon-moon { display: none; }
html.dark .icon-sun { display: block; }

/* 产品下拉 */
.nav-dropdown { position: relative; }
.nav-dd-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 180px;
  padding: 6px 10px;
  font-size: 14px;
  color: var(--c-text-2);
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.nav-dd-btn span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-dd-btn:hover { color: var(--c-text); border-color: var(--c-brand); }
.nav-dropdown.open .nav-dd-btn svg { transform: rotate(180deg); }
.nav-dd-btn svg { transition: transform 0.15s; }

.nav-dd-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  padding: 6px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 10px;
  box-shadow: var(--shadow-pop);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}
.nav-dropdown.open .nav-dd-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--c-text-2);
  border-radius: 6px;
}
.nav-dd-item:hover { color: var(--c-text); background: var(--c-bg-mute); }
.nav-dd-item.active { color: var(--c-brand); background: var(--c-brand-weak); font-weight: 500; }
.dd-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.dd-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 搜索按钮 */
.search-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-size: 13.5px;
  color: var(--c-text-3);
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.search-btn:hover { color: var(--c-text-2); border-color: var(--c-brand); }
.search-kbd { display: flex; gap: 3px; margin-left: 4px; }

/* 汉堡按钮：仅带侧栏的页面 + 窄屏时出现 */
.hamburger { display: none; }

/* ---------------- 首页 ---------------- */
.home-main { min-height: calc(100vh - var(--header-h)); }

.hero {
  max-width: 820px;
  margin: 0 auto;
  padding: 72px 24px 40px;
  text-align: center;
}
.hero-title {
  margin: 0 0 14px;
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.hero-desc {
  margin: 0;
  font-size: 16px;
  color: var(--c-text-2);
}

.product-area { padding: 8px 24px 88px; }
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(272px, 1fr));
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.product-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.03);
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
}
.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--pc, var(--c-brand));
  box-shadow: var(--shadow-card);
}
.pc-cover {
  display: block;
  width: 100%;
  aspect-ratio: 12 / 5;
  overflow: hidden;
  background: var(--pc, var(--c-brand));
}
.pc-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s ease;
}
.product-card:hover .pc-cover img { transform: scale(1.04); }
.pc-cover-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 44px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(0, 0, 0, 0.22)),
    var(--pc, var(--c-brand));
}
.pc-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px 18px;
}
.pc-name { font-size: 16.5px; font-weight: 600; color: var(--c-text); }
.pc-desc {
  min-height: 22px;
  font-size: 13.5px;
  color: var(--c-text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pc-count { margin-top: 6px; font-size: 12.5px; color: var(--c-text-3); }

.home-empty {
  max-width: 640px;
  margin: 32px auto 0;
  padding: 18px 20px;
  font-size: 14px;
  color: var(--c-text-2);
  text-align: center;
  background: var(--c-bg-soft);
  border: 1px dashed var(--c-border);
  border-radius: 10px;
}

/* ---------------- 文档布局（三栏） ---------------- */
.layout {
  display: flex;
  align-items: flex-start;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 左侧文档树 */
.sidebar {
  position: sticky;
  top: var(--header-h);
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  height: calc(100vh - var(--header-h));
  padding: 20px 12px 20px 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.sidebar::-webkit-scrollbar { width: 5px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }

.sidebar-inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  border-right: 1px solid var(--c-border-soft);
  padding-right: 4px;
}

.sidebar-product {
  padding: 4px 10px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-3);
  letter-spacing: 0.02em;
}

.side-nav { flex: 1 0 auto; }

.side-empty {
  padding: 10px;
  font-size: 13px;
  color: var(--c-text-3);
}

.side-group { margin-bottom: 4px; }
.side-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--c-text);
  border-radius: 6px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.side-group summary::-webkit-details-marker { display: none; }
.side-group summary:hover { background: var(--c-bg-mute); }
.sg-chevron { color: var(--c-text-3); transition: transform 0.15s; }
.side-group[open] .sg-chevron { transform: rotate(90deg); }

.side-items { display: flex; flex-direction: column; padding-left: 10px; margin: 2px 0 6px; }

.side-item {
  padding: 6px 10px;
  font-size: 13.5px;
  color: var(--c-text-2);
  border-radius: 6px;
  border-left: 2px solid transparent;
}
.side-item:hover { color: var(--c-text); background: var(--c-bg-mute); }
.side-item.active {
  color: var(--c-brand);
  background: var(--c-brand-weak);
  border-left-color: var(--c-brand);
  font-weight: 500;
}

.side-home {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 10px 4px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--c-text-3);
  border-top: 1px solid var(--c-border-soft);
}
.side-home:hover { color: var(--c-brand); }

.sidebar-mask {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(0, 0, 0, 0.44);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

/* 中部内容 */
.main {
  flex: 1 1 auto;
  min-width: 0;
}
.doc-wrap {
  max-width: 768px;
  margin: 0 auto;
  padding: 36px 28px 72px;
}

.doc-header { margin-bottom: 26px; }
.doc-title {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
  color: var(--c-text);
}
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  color: var(--c-text-3);
}

/* 产品手册首页（category） */
.cat-hero {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 26px;
  margin-bottom: 34px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  border-radius: 12px;
}
.cat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  overflow: hidden;
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  background: var(--pc, var(--c-brand));
  border-radius: 12px;
}
.cat-icon img { width: 100%; height: 100%; object-fit: cover; }
.cat-hero-text { flex: 1 1 auto; min-width: 0; }
.cat-title { margin: 0 0 4px; font-size: 24px; font-weight: 700; color: var(--c-text); }
.cat-desc { margin: 0 0 6px; font-size: 14px; color: var(--c-text-2); }
.cat-meta { font-size: 12.5px; color: var(--c-text-3); }
.cat-start { flex: 0 0 auto; }

.chapter-head {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text-2);
}
.chapter-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 10px;
}
.chapter-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.chapter-card:hover { border-color: var(--c-brand); box-shadow: var(--shadow-card); }
.ch-name {
  overflow: hidden;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--c-text);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ch-meta {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12.5px;
  color: var(--c-text-3);
  white-space: nowrap;
}

/* 右侧本页目录 */
.toc {
  position: sticky;
  top: var(--header-h);
  flex: 0 0 var(--toc-w);
  width: var(--toc-w);
  height: calc(100vh - var(--header-h));
  padding: 34px 0 20px 20px;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.toc[hidden] { display: none; }
.toc-title {
  margin-bottom: 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--c-text-3);
}
.toc-nav { display: flex; flex-direction: column; border-left: 1px solid var(--c-border); }
.toc-link {
  padding: 4px 0 4px 14px;
  font-size: 12.8px;
  line-height: 1.5;
  color: var(--c-text-3);
  border-left: 2px solid transparent;
  transform: translateX(-1px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.toc-link:hover { color: var(--c-text-2); }
.toc-link.lv3 { padding-left: 26px; }
.toc-link.active {
  color: var(--c-brand);
  border-left-color: var(--c-brand);
  font-weight: 500;
}

/* ---------------- 正文排版（prose） ---------------- */
.doc-content { font-size: 15.5px; color: var(--c-text); }
.doc-content > :first-child { margin-top: 0; }

.doc-content h1,
.doc-content h2,
.doc-content h3,
.doc-content h4 {
  margin: 1.8em 0 0.7em;
  font-weight: 650;
  line-height: 1.4;
  color: var(--c-text);
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.doc-content h1 { font-size: 26px; }
.doc-content h2 {
  padding-bottom: 0.35em;
  font-size: 22px;
  border-bottom: 1px solid var(--c-border-soft);
}
.doc-content h3 { font-size: 18px; }
.doc-content h4 { font-size: 16px; }

.doc-content p { margin: 0.9em 0; }

.doc-content a { text-decoration: underline; text-underline-offset: 3px; }
.doc-content a:hover { text-decoration-thickness: 2px; }

.doc-content ul,
.doc-content ol { margin: 0.9em 0; padding-left: 1.6em; }
.doc-content li { margin: 0.35em 0; }
.doc-content li > ul,
.doc-content li > ol { margin: 0.35em 0; }

.doc-content blockquote {
  margin: 1.2em 0;
  padding: 10px 18px;
  color: var(--c-text-2);
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-brand);
  border-radius: 0 8px 8px 0;
}
.doc-content blockquote > :first-child { margin-top: 0; }
.doc-content blockquote > :last-child { margin-bottom: 0; }

.doc-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  cursor: zoom-in;
}

.doc-content hr {
  height: 1px;
  margin: 2.2em 0;
  background: var(--c-border);
  border: 0;
}

/* 行内代码 */
.doc-content code:not(pre code) {
  padding: 2px 6px;
  font-size: 0.875em;
  font-family: var(--font-mono);
  color: var(--c-code-text);
  background: var(--c-code-bg);
  border-radius: 5px;
}

/* 代码块 */
.doc-content pre {
  position: relative;
  margin: 1.2em 0;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.65;
}
.doc-content pre code {
  display: block;
  min-width: fit-content;
  padding: 14px 16px;
  font-family: var(--font-mono);
  color: var(--c-block-text);
  background: var(--c-block-bg);
  border-radius: 8px;
}

/* highlight.js 加载后交给它接管配色 */
html.hljs-ready .doc-content pre code { padding: 14px 16px; }

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--c-text-2);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.doc-content pre:hover .copy-btn,
.copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { color: var(--c-brand); border-color: var(--c-brand); }
.copy-btn.done { color: var(--c-brand); border-color: var(--c-brand); }

/* 表格 */
.doc-content table {
  display: block;
  width: max-content;
  max-width: 100%;
  margin: 1.2em 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 14px;
}
.doc-content th,
.doc-content td {
  padding: 8px 14px;
  border: 1px solid var(--c-border);
}
.doc-content th {
  font-weight: 600;
  color: var(--c-text);
  background: var(--c-bg-soft);
}
.doc-content td { color: var(--c-text-2); }

/* ---------------- 上下页 ---------------- */
.pager {
  display: flex;
  gap: 14px;
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border-soft);
}
.pager-card {
  display: flex;
  flex: 1 1 0;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding: 13px 16px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.pager-card:hover { border-color: var(--c-brand); box-shadow: var(--shadow-card); }
.pager-card.next { text-align: right; }
.pager-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--c-text-3);
}
.pager-title {
  overflow: hidden;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pager-spacer { flex: 1 1 0; }

/* ---------------- 搜索弹窗 ---------------- */
.search-modal { position: fixed; inset: 0; z-index: 100; }
.search-modal[hidden] { display: none; }

.sm-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 12, 20, 0.5);
}

.sm-panel {
  position: relative;
  width: min(640px, calc(100vw - 32px));
  margin: 11vh auto 0;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  box-shadow: var(--shadow-pop);
  overflow: hidden;
}

.sm-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  color: var(--c-text-3);
  border-bottom: 1px solid var(--c-border-soft);
}
.sm-input-row svg { width: 16px; height: 16px; }
#sm-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 2px 0;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: transparent;
  border: none;
  outline: none;
}
#sm-input::placeholder { color: var(--c-text-3); }
.sm-esc {
  padding: 2px 7px;
  font-size: 11px;
  color: var(--c-text-3);
  background: var(--c-bg-mute);
  border-radius: 4px;
}

.sm-results {
  max-height: min(52vh, 440px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 8px;
}
.sm-hint,
.sm-empty {
  padding: 26px 0;
  font-size: 13.5px;
  color: var(--c-text-3);
  text-align: center;
}

.sm-item {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
}
.sm-item:hover,
.sm-item.active { background: var(--c-bg-mute); }
.sm-title {
  display: block;
  overflow: hidden;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sm-title b { color: var(--c-brand); font-weight: 600; }
.sm-snippet {
  display: block;
  margin-top: 2px;
  overflow: hidden;
  font-size: 12.5px;
  color: var(--c-text-3);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sm-snippet b { color: var(--c-text-2); font-weight: 600; }

.sm-foot {
  display: flex;
  gap: 16px;
  padding: 9px 16px;
  font-size: 12px;
  color: var(--c-text-3);
  border-top: 1px solid var(--c-border-soft);
}
.sm-foot span { display: inline-flex; align-items: center; gap: 4px; }

/* ---------------- 页脚 ---------------- */
.footer {
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-soft);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 18px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 24px;
  font-size: 12.5px;
  color: var(--c-text-3);
  text-align: center;
}
.footer-info,
.footer-contact { color: var(--c-text-2); }

/* ---------------- 404 ---------------- */
.error-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  min-height: calc(100vh - var(--header-h));
  justify-content: center;
  padding: 40px 24px;
}
.error-code { font-size: 88px; font-weight: 700; line-height: 1; color: var(--c-brand); opacity: 0.85; }
.error-text { font-size: 15px; color: var(--c-text-2); margin-bottom: 12px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1279.5px) {
  .toc { display: none; }
}

@media (max-width: 1023.5px) {
  .navbar-inner { padding: 0 14px; }
  .nav-links { display: none; }
  .search-btn-text,
  .search-kbd { display: none; }
  .search-btn { padding: 6px 9px; }
  .nav-dd-btn { max-width: 130px; }

  .has-sidebar .hamburger { display: flex; }

  .layout { padding: 0; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 80;
    width: min(300px, 84vw);
    height: 100vh;
    padding: 18px 10px 18px 16px;
    background: var(--c-bg);
    box-shadow: none;
    transform: translateX(-102%);
    transition: transform 0.22s ease;
  }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-pop); }
  .sidebar-mask.show { opacity: 1; visibility: visible; }
  body.drawer-open { overflow: hidden; }

  .sidebar-inner { height: 100%; border-right: none; padding-right: 0; }

  .doc-wrap { padding: 26px 20px 60px; }
  .doc-title { font-size: 25px; }

  .cat-hero { flex-wrap: wrap; padding: 20px; }
  .cat-start { width: 100%; justify-content: center; }

  .pager { flex-direction: column; }
  .pager-spacer { display: none; }
  .pager-card.next { text-align: left; }
}

@media (max-width: 519.5px) {
  .hero { padding: 52px 18px 30px; }
  .product-area { padding: 8px 18px 64px; }
  .product-grid { grid-template-columns: 1fr; }
  .chapter-list { grid-template-columns: 1fr; }
}

/* 打印时隐藏导航类组件 */
@media print {
  .navbar, .sidebar, .toc, .pager, .footer, .search-modal, .sidebar-mask { display: none !important; }
  .doc-wrap { max-width: none; padding: 0; }
}

/* ---------------- 图片查看浮层（双击正文图片打开） ---------------- */
.imgview {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  overflow: auto;           /* 原图超出视口时滚动查看 */
  padding: 24px;
  background: rgba(15, 18, 24, 0.88);
  animation: imgview-in 0.16s ease;
}
/* margin:auto 而非 flex 居中：图小于视口时居中，大于视口时可完整滚动 */
.imgview-img {
  margin: auto;
  width: auto;
  height: auto;
  max-width: none;          /* 关键：不受容器约束，按原图尺寸显示 */
  max-height: none;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  cursor: zoom-out;
}
.imgview-tip {
  position: fixed;
  right: 16px;
  bottom: 12px;
  padding: 4px 10px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(0, 0, 0, 0.35);
  border-radius: 999px;
  pointer-events: none;
}
html.imgview-open,
html.imgview-open body { overflow: hidden; }
@keyframes imgview-in {
  from { opacity: 0; }
}