/* JCM Yanyang C++ 脚本文档 — 共享样式（浅色 / 深色双主题） */
:root {
  color-scheme: light;
  --bg: #fafaf9;
  --paper: #ffffff;
  --text: #292524;
  --heading: #1c1917;
  --muted: #78716c;
  --faint: #a8a29e;
  --border: #e7e5e4;
  --border-strong: #d6d3d1;
  --accent: #059669;
  --accent-strong: #047857;
  --accent-soft: #ecfdf5;
  --accent-border: #a7f3d0;
  --warn: #b45309;
  --warn-soft: #fffbeb;
  --warn-border: #fde68a;
  --warn-strong: #d97706;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --danger-border: #fecaca;
  --info: #0f766e;
  --info-soft: #f0fdfa;
  --info-border: #99f6e4;
  --sidebar-bg: #1c1917;
  --sidebar-text: #d6d3d1;
  --sidebar-muted: #78716c;
  --sidebar-strong: #fafaf9;
  --sidebar-border: #292524;
  --sidebar-hover: #292524;
  --sidebar-active: #34d399;
  --sidebar-scrollbar: #44403c;
  --code-bg: #1c1917;
  --code-text: #e7e5e4;
  --inline-code-bg: #f5f5f4;
  --inline-code-text: #3f3f46;
  --th-bg: #f5f5f4;
  --th-text: #44403c;
  --row-alt: #fcfcfb;
  --node-bg: #ffffff;
  --radius: 10px;
  --content-width: 860px;
  --sidebar-width: 268px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c0a09;
  --paper: #171412;
  --text: #e7e5e4;
  --heading: #f5f5f4;
  --muted: #a8a29e;
  --faint: #78716c;
  --border: #292524;
  --border-strong: #44403c;
  --accent: #34d399;
  --accent-strong: #6ee7b7;
  --accent-soft: rgba(16, 185, 129, 0.12);
  --accent-border: rgba(52, 211, 153, 0.42);
  --warn: #fbbf24;
  --warn-soft: rgba(217, 119, 6, 0.13);
  --warn-border: rgba(217, 119, 6, 0.45);
  --warn-strong: #f59e0b;
  --danger: #f87171;
  --danger-soft: rgba(185, 28, 28, 0.14);
  --danger-border: rgba(248, 113, 113, 0.4);
  --info: #5eead4;
  --info-soft: rgba(15, 118, 110, 0.16);
  --info-border: rgba(94, 234, 212, 0.38);
  --sidebar-bg: #141210;
  --sidebar-text: #d6d3d1;
  --sidebar-muted: #78716c;
  --sidebar-strong: #fafaf9;
  --sidebar-border: #262220;
  --sidebar-hover: #262220;
  --sidebar-active: #34d399;
  --sidebar-scrollbar: #44403c;
  --code-bg: #0f0d0c;
  --code-text: #e7e5e4;
  --inline-code-bg: #262220;
  --inline-code-text: #d6d3d1;
  --th-bg: #1f1c1a;
  --th-text: #d6d3d1;
  --row-alt: #1a1715;
  --node-bg: #1c1917;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* 触屏基础：去除系统灰色点按高亮，避免景观模式文字自动放大 */
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* 键盘焦点可见；指针点按不画焦点环 */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

/* 交互控件：消除 300ms 延迟与双击缩放（保留双指缩放），并禁选按钮文字 */
a, button, select, summary { touch-action: manipulation; }

button, select, .nav a {
  -webkit-user-select: none;
  user-select: none;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue",
    Arial, sans-serif;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ---------------- 布局 ---------------- */

.layout {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--sidebar-scrollbar) transparent;
}

.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--sidebar-scrollbar); border-radius: 3px; }

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.content {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 44px 48px 72px;
}

/* ---------------- 侧栏 ---------------- */

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 20px 18px;
  text-decoration: none;
  color: var(--sidebar-strong);
  border-bottom: 1px solid var(--sidebar-border);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: linear-gradient(135deg, #047857, #10b981);
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text b { font-size: 15px; color: var(--sidebar-strong); }
.brand-text small { font-size: 11.5px; color: var(--sidebar-muted); }

.nav { padding: 14px 12px 20px; flex: 1; }

.nav-group {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  padding: 16px 10px 6px;
}

.nav a {
  display: block;
  padding: 7px 10px;
  border-radius: 7px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.15s, color 0.15s;
}

.nav a:active {
  background: var(--sidebar-hover);
  color: var(--sidebar-strong);
}

.nav a.active:active {
  background: rgba(16, 185, 129, 0.22);
  color: var(--sidebar-active);
}

.nav a.active {
  background: rgba(16, 185, 129, 0.14);
  color: var(--sidebar-active);
  font-weight: 600;
}

.nav a .sub {
  display: block;
  font-size: 11.5px;
  color: var(--sidebar-muted);
  font-weight: 400;
}

/* ---------------- 侧栏设置（主题 / 语言） ---------------- */

.sidebar-settings {
  padding: 12px 16px 16px;
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: none;
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-text);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.theme-toggle:active {
  border-color: var(--sidebar-active);
  color: var(--sidebar-strong);
}

.theme-icon { font-size: 14px; line-height: 1; }
.theme-label { white-space: nowrap; }

.lang-row { display: flex; align-items: center; gap: 8px; }
.lang-icon { font-size: 14px; line-height: 1; }

.lang-select {
  flex: 1;
  min-width: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  border: 1px solid var(--sidebar-border);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  appearance: auto;
}

.lang-select:focus-visible { outline: 2px solid var(--sidebar-active); outline-offset: 1px; }
.lang-select option { background: var(--sidebar-bg); color: var(--sidebar-text); }

.sidebar-footer {
  padding: 14px 20px 18px;
  font-size: 11.5px;
  color: var(--sidebar-muted);
  border-top: 1px solid var(--sidebar-border);
  line-height: 1.6;
}

/* 移动端顶栏 */
.topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--sidebar-bg);
  color: var(--sidebar-strong);
  padding: 12px 18px;
  align-items: center;
  gap: 12px;
}

.topbar .menu-btn {
  background: none;
  border: 1px solid var(--sidebar-scrollbar);
  color: var(--sidebar-text);
  border-radius: 7px;
  padding: 5px 12px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.topbar .title {
  font-weight: 600;
  font-size: 14.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------------- 排版 ---------------- */

h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--heading);
  scroll-margin-top: 24px;
}

h1 {
  font-size: 31px;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 22.5px;
  margin: 52px 0 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border);
}

h3 { font-size: 17.5px; margin: 34px 0 10px; }
h4 { font-size: 15.5px; margin: 26px 0 8px; }

.page-lead {
  font-size: 16.5px;
  color: var(--muted);
  margin: 2px 0 10px;
}

p { margin: 12px 0; }

a { color: var(--accent-strong); }

a:active { color: var(--accent); }

ul, ol { padding-left: 26px; }
li { margin: 5px 0; }

strong { color: var(--heading); }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* 页头 */
.page-header { margin-bottom: 10px; }

.breadcrumb {
  font-size: 12.5px;
  color: var(--faint);
  margin-bottom: 10px;
}

.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:active { color: var(--accent-strong); }

/* ---------------- 代码 ---------------- */

code, pre, kbd {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono",
    Menlo, Consolas, "Liberation Mono", monospace;
}

:not(pre) > code {
  background: var(--inline-code-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.1em 0.38em;
  font-size: 0.86em;
  color: var(--inline-code-text);
  word-break: break-word;
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius);
  padding: 17px 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.68;
  margin: 16px 0;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* 语法高亮（由 app.js 添加；代码块在两主题下均为深底） */
.tok-c { color: #7d7268; font-style: italic; }      /* 注释 */
.tok-s { color: #a5d6a7; }                          /* 字符串 */
.tok-k { color: #f0b47a; }                          /* 关键字 */
.tok-n { color: #89ddff; }                          /* 数字 */
.tok-t { color: #e8d9b0; }                          /* 类型/类 */
.tok-f { color: #9cdcfe; }                          /* 函数 */

:root[data-theme="dark"] .tok-c { color: #8f8478; }

/* 代码块标题 */
.code-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  margin: 14px 0 -8px;
  padding: 0 4px;
}

/* 代码复制按钮（app.js 注入；代码块在两主题下均为深底）
   纯触屏设备常显，鼠标设备悬停代码块时显示，混合设备触摸会话中常显 */
.code-block-wrap { position: relative; }

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 9px;
  min-height: 30px;
  font-size: 11.5px;
  font-family: inherit;
  line-height: 1;
  color: #a8a29e;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 7px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, background 0.15s, color 0.15s, border-color 0.15s;
}

.copy-btn:focus-visible {
  opacity: 1;
  pointer-events: auto;
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.copy-btn.ok {
  opacity: 1;
  pointer-events: auto;
  color: #6ee7b7;
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(110, 231, 183, 0.42);
}

.copy-btn.err {
  opacity: 1;
  pointer-events: auto;
  color: #f87171;
  background: rgba(185, 28, 28, 0.16);
  border-color: rgba(248, 113, 113, 0.4);
}

.copy-btn:active { background: rgba(255, 255, 255, 0.18); }

/* ---------------- 表格 ---------------- */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.8px;
  margin: 16px 0;
  display: block;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

th, td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
  /* 列宽地板：每列保底约 8 字宽度，杜绝窄屏下说明列被压成细塔（比例失调） */
  min-width: 8em;
}

th {
  background: var(--th-bg);
  font-weight: 600;
  /* 空间充裕时表头本就不会折行；受限时允许折行，不再反向挤压正文列 */
  white-space: normal;
  color: var(--th-text);
}

tbody tr:nth-child(even) { background: var(--row-alt); }

/* 单元格内代码：允许在空隙/斜杠处折行，但单个标识符永不斩断
   （覆盖内联代码芯片的 word-break: break-word）——
   列宽不足时由整列撑宽、表格横向滚动解决，避免 MTR_REGISTER_... 被拦腰截断 */
td code {
  white-space: normal;
  word-break: normal;
}

/* 宽表格仍溢出时：依滚动位置在相应边缘作渐隐提示（can-l / can-r 由 app.js 切换）。
   mask 挂在滚动容器盒上，内容滑动而提示常驻；两端同时可滑时双 mask 联合（默认 add 合成） */
.table-wrap.can-l {
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 20px);
  mask-image: linear-gradient(to right, transparent 0, #000 20px);
}
.table-wrap.can-r {
  -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 20px), transparent 100%);
  mask-image: linear-gradient(to right, #000 calc(100% - 20px), transparent 100%);
}
.table-wrap.can-l.can-r {
  -webkit-mask-image:
    linear-gradient(to right, transparent 0, #000 20px),
    linear-gradient(to right, #000 calc(100% - 20px), transparent 100%);
  mask-image:
    linear-gradient(to right, transparent 0, #000 20px),
    linear-gradient(to right, #000 calc(100% - 20px), transparent 100%);
}

/* JS 就绪（app.js 为每表包一层 .table-wrap）后：表格回归标准表格布局——
   width:100% 铺满优先，配合上面的列宽地板与折行规则；
   整体最小内容仍超宽时表格自然溢出、由外层容器横向滚动 */
.table-wrap {
  margin: 16px 0;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.table-wrap > table {
  display: table;
  width: 100%;
  margin: 0;
  overflow-x: visible;
}

/* ---------------- 提示框 ---------------- */

.admonition {
  border-radius: var(--radius);
  border: 1px solid;
  padding: 13px 18px;
  margin: 18px 0;
  font-size: 14.5px;
  line-height: 1.7;
}

.admonition p { margin: 6px 0; }
.admonition p:first-child { margin-top: 0; }
.admonition p:last-child { margin-bottom: 0; }

.admonition .admonition-title {
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
  font-size: 13.5px;
  letter-spacing: 0.02em;
}

.admonition.tip { background: var(--accent-soft); border-color: var(--accent-border); }
.admonition.tip .admonition-title { color: var(--accent-strong); }

.admonition.note { background: var(--info-soft); border-color: var(--info-border); }
.admonition.note .admonition-title { color: var(--info); }

.admonition.warn { background: var(--warn-soft); border-color: var(--warn-border); }
.admonition.warn .admonition-title { color: var(--warn); }

.admonition.danger { background: var(--danger-soft); border-color: var(--danger-border); }
.admonition.danger .admonition-title { color: var(--danger); }

/* ---------------- 首页组件 ---------------- */

.hero {
  padding: 14px 0 8px;
  margin-bottom: 18px;
}

.hero .eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 16px;
}

.hero h1 { font-size: 34px; margin: 0 0 10px; }

.hero .lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 640px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:active { border-color: var(--accent-border); }

.card .card-icon {
  font-size: 21px;
  line-height: 1;
  margin-bottom: 9px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
}

.card p {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.65;
}

/* 架构示意 */
.arch {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  margin: 20px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.arch-row {
  display: flex;
  gap: 14px;
  align-items: stretch;
  min-width: 620px;
}

.arch-col { flex: 1; display: flex; flex-direction: column; gap: 10px; }

.arch-node {
  border: 1.5px solid var(--border-strong);
  border-radius: 9px;
  padding: 10px 14px;
  background: var(--node-bg);
  text-align: center;
}

.arch-node b { display: block; font-size: 14px; color: var(--heading); }
.arch-node span { font-size: 12px; color: var(--muted); line-height: 1.5; display: block; }

.arch-node.host { border-color: var(--accent); background: var(--accent-soft); }
.arch-node.transport { border-style: dashed; border-color: var(--info); background: var(--info-soft); }
.arch-node.native { border-color: var(--warn-strong); background: var(--warn-soft); }

.arch-arrow {
  text-align: center;
  color: var(--faint);
  font-size: 18px;
  line-height: 1;
  padding: 2px 0;
}

.arch-legend {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border-strong);
}

/* 徽章 */
.pill {
  display: inline-block;
  border-radius: 999px;
  padding: 1px 10px;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid;
  line-height: 1.7;
  white-space: nowrap;
}

.pill.ok { color: var(--accent-strong); background: var(--accent-soft); border-color: var(--accent-border); }
.pill.warn { color: var(--warn); background: var(--warn-soft); border-color: var(--warn-border); }
.pill.muted { color: var(--muted); background: var(--inline-code-bg); border-color: var(--border); }
.pill.yy { color: var(--info); background: var(--info-soft); border-color: var(--info-border); font-weight: 600; }

/* 步骤 */
.steps { counter-reset: step; margin: 18px 0; }

.step {
  position: relative;
  padding: 0 0 22px 46px;
  border-left: 2px solid var(--border-strong);
  margin-left: 16px;
}

.step:last-child { padding-bottom: 4px; border-left-color: transparent; }

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -17px;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid var(--bg);
}

.step h3 { margin: 2px 0 6px; }

/* 目录卡片 */
.toc-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.toc-card {
  display: block;
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 15px 18px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.toc-card:active { border-color: var(--accent-border); }

.toc-card b {
  display: block;
  color: var(--heading);
  font-size: 15px;
  margin-bottom: 3px;
}

.toc-card span { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* 页脚 */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 22px 48px;
  font-size: 12.5px;
  color: var(--faint);
  background: var(--paper);
}

.footer a { color: var(--muted); }

.footer .footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

/* 页内目录 */
.page-toc {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 20px;
  margin: 20px 0 8px;
  font-size: 13.5px;
}

.page-toc b { display: block; font-size: 12px; letter-spacing: 0.08em; color: var(--faint); text-transform: uppercase; margin-bottom: 6px; }

.page-toc ol { margin: 0; padding-left: 20px; }
.page-toc li { margin: 3px 0; }
.page-toc a { text-decoration: none; }
.page-toc a:active { text-decoration: underline; }

/* ---------------- 语言选择页 ---------------- */

.picker {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--paper);
}

.picker-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.picker-brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.picker-brand-text b { font-size: 15.5px; color: var(--heading); }
.picker-brand-text small { font-size: 11.5px; color: var(--muted); }

/* 浅底纸面上的主题按钮变体 */
.theme-toggle.on-paper {
  border-color: var(--border-strong);
  color: var(--muted);
  width: auto;
}

.theme-toggle.on-paper:active {
  background: var(--inline-code-bg);
  color: var(--text);
  border-color: var(--faint);
}

.picker-main {
  flex: 1;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 52px 28px 64px;
}

.picker-main h1 {
  font-size: 30px;
  margin: 0 0 6px;
}

.picker-sub {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 28px;
  line-height: 1.8;
}

.lang-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}

.lang-card {
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px 16px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.lang-card:active {
  border-color: var(--accent-border);
  box-shadow: 0 3px 16px rgba(5, 150, 105, 0.1);
}

.lang-card .lc-suggest {
  display: none;
  position: absolute;
  top: 13px;
  right: 14px;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 0 9px;
  line-height: 1.8;
}

.lang-card.suggested .lc-suggest { display: inline-block; }
.lang-card.suggested { border-color: var(--accent-border); }

.lang-card .lc-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--heading);
  padding-right: 56px;
}

.lang-card .lc-region {
  font-size: 13px;
  color: var(--muted);
  margin-top: 3px;
}

.lang-card .lc-code {
  font-size: 11px;
  color: var(--faint);
  margin-top: 12px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 0.04em;
}

.picker-footer {
  border-top: 1px solid var(--border);
  padding: 18px 28px;
  font-size: 12.5px;
  color: var(--faint);
  background: var(--paper);
  text-align: center;
}

.picker-footer a { color: var(--muted); }

/* ---------------- 悬停表现（仅真实鼠标指针） ----------------
   纯触屏设备 (hover: none) 不命中以下规则；
   触屏笔记本/二合一设备在触摸会话中由下方 [data-input="touch"] 压制，
   鼠标再次移动后自动恢复 —— 消除“粘滞悬停”。 */
@media (hover: hover) and (pointer: fine) {
  .nav a:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-strong);
  }
  .nav a.active:hover {
    background: rgba(16, 185, 129, 0.14);
    color: var(--sidebar-active);
  }
  .theme-toggle:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-strong);
    border-color: var(--sidebar-scrollbar);
  }
  .theme-toggle.on-paper:hover {
    background: var(--inline-code-bg);
    color: var(--text);
    border-color: var(--faint);
  }
  .lang-select:hover { border-color: var(--sidebar-scrollbar); }
  a:hover { color: var(--accent); }
  .breadcrumb a:hover { color: var(--accent-strong); }
  .card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 2px 14px rgba(5, 150, 105, 0.09);
  }
  .toc-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 2px 12px rgba(5, 150, 105, 0.09);
  }
  .page-toc a:hover { text-decoration: underline; }
  .lang-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 3px 16px rgba(5, 150, 105, 0.1);
    transform: translateY(-1px);
  }
  .lang-card.suggested:hover { border-color: var(--accent-border); }
  .code-block-wrap:hover .copy-btn { opacity: 1; pointer-events: auto; }
  .copy-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fafaf9;
  }
}

/* 混合设备（带触摸屏的电脑/平板）触摸会话：压制悬停表现，改由 :active 提供反馈 */
:root[data-input="touch"] .nav a:hover { background: none; color: var(--sidebar-text); }
:root[data-input="touch"] .nav a.active:hover { background: rgba(16, 185, 129, 0.14); color: var(--sidebar-active); }
:root[data-input="touch"] .theme-toggle:hover { background: none; color: var(--sidebar-text); border-color: var(--sidebar-border); }
:root[data-input="touch"] .theme-toggle.on-paper:hover { background: none; color: var(--muted); border-color: var(--border-strong); }
:root[data-input="touch"] .lang-select:hover { border-color: var(--sidebar-border); }
:root[data-input="touch"] a:hover { color: var(--accent-strong); }
:root[data-input="touch"] .breadcrumb a:hover { color: var(--muted); }
:root[data-input="touch"] .card:hover { border-color: var(--border); box-shadow: none; }
:root[data-input="touch"] .toc-card:hover { border-color: var(--border); box-shadow: none; }
:root[data-input="touch"] .page-toc a:hover { text-decoration: none; }
:root[data-input="touch"] .lang-card:hover { border-color: var(--border); box-shadow: none; transform: none; }
:root[data-input="touch"] .lang-card.suggested:hover { border-color: var(--accent-border); }
:root[data-input="touch"] .code-block-wrap:hover .copy-btn { opacity: 1; pointer-events: auto; }
:root[data-input="touch"] .copy-btn:hover { background: rgba(255, 255, 255, 0.07); color: #a8a29e; }
:root[data-input="touch"] .copy-btn {
  opacity: 1;
  pointer-events: auto;
  padding: 8px 11px;
  min-height: 38px;
}

/* 纯触屏（手机/平板）：复制按钮常显并放大触点 */
@media (hover: none), (pointer: coarse) {
  .copy-btn {
    opacity: 1;
    pointer-events: auto;
    padding: 8px 11px;
    min-height: 38px;
  }
}

/* ---------------- 响应式 ---------------- */

/* 平板与手机（≤ 960px）：吸顶顶栏 + 抽屉式侧栏 */
@media (max-width: 960px) {
  .topbar {
    display: flex;
    min-height: 56px;
    padding-top: calc(12px + env(safe-area-inset-top));
    padding-bottom: 12px;
    padding-left: calc(18px + env(safe-area-inset-left));
    padding-right: calc(18px + env(safe-area-inset-right));
  }

  .topbar .menu-btn {
    padding: 10px 14px;
    min-height: 44px;
    align-self: center;
  }

  /* 抽屉侧栏（env() 不支持时优雅降级为基础样式） */
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    height: auto;
    z-index: 100;
    width: min(300px, 85vw);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    transform: translateX(-102%);
    visibility: hidden;
    transition: transform 0.24s ease, visibility 0.24s;
  }

  .sidebar.open {
    transform: translateX(0);
    visibility: visible;
    /* Opening must make links focusable synchronously; animating visibility
       leaves them hidden when openDrawer() moves keyboard focus. */
    transition: transform 0.24s ease;
  }

  /* 打开时锁定背景滚动 + 全屏遮罩（点击遮罩关闭） */
  body.nav-open { overflow: hidden; }

  body.nav-open::after {
    content: "";
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: rgba(28, 25, 23, 0.5);
    z-index: 90;
  }

  /* 触点目标 ≥ 44px；select 用 16px 字号避免 iOS 聚焦时自动放大页面 */
  .nav a { padding: 10px 12px; font-size: 14.5px; }
  .theme-toggle { padding: 10px 12px; min-height: 44px; }
  .lang-select { font-size: 16px; min-height: 44px; padding: 8px 10px; }

  /* 页内目录锚点跳转避开吸顶顶栏 */
  h1, h2, h3, h4 { scroll-margin-top: 84px; }

  .content { padding: 28px 22px 56px; }
  h1 { font-size: 27px; }
  .hero h1 { font-size: 29px; }
  .footer { padding: 18px 22px calc(18px + env(safe-area-inset-bottom)); }

  .picker-header {
    padding: 14px 18px;
    padding-top: calc(14px + env(safe-area-inset-top));
  }
  .picker-main { padding: 36px 18px 48px; }
  .picker-main h1 { font-size: 25px; }
  .picker-footer { padding: 18px 28px calc(18px + env(safe-area-inset-bottom)); }
  .lang-cards { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}

/* 平板纵向中段：更宽的留白 */
@media (min-width: 561px) and (max-width: 960px) {
  .content { padding: 32px 30px 64px; }
}

/* 手机（≤ 560px） */
@media (max-width: 560px) {
  .lang-cards { grid-template-columns: 1fr; }
  .toc-cards { grid-template-columns: 1fr; }
  h1 { font-size: 25px; }
  .hero h1 { font-size: 26px; }
  h2 { font-size: 20px; margin-top: 42px; }
  h3 { font-size: 16.5px; }
  .page-lead { font-size: 15.5px; }
  pre { font-size: 12.5px; padding: 14px 15px; }
  table { font-size: 13px; }
  th, td { padding: 7px 10px; }
  .arch { padding: 16px 12px; }
  .arch-row { min-width: 540px; gap: 10px; }
  .content { padding: 24px 18px 52px; }
  .breadcrumb { font-size: 12px; }
  .cards { gap: 10px; }
  .step { padding-left: 40px; }
  .footer { padding: 16px 18px calc(16px + env(safe-area-inset-bottom)); }
  .footer .footer-links { gap: 14px; }
  .footer .footer-links a { display: inline-block; padding: 8px 2px; }
  .picker-sub { font-size: 13px; }
}

/* 超窄屏（≤ 400px 折叠屏外屏） */
@media (max-width: 400px) {
  h1 { font-size: 23px; }
  .hero h1 { font-size: 24px; }
  .topbar .title { font-size: 13.5px; }
}

/* 减弱动态效果偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .sidebar, .topbar, .footer, .sidebar-settings, .picker-header { display: none; }
  body.nav-open { overflow: visible; }
  body.nav-open::after { display: none; }
  .copy-btn { display: none; }
  .table-wrap { overflow-x: visible; margin: 12px 0; }
  .table-wrap.can-l, .table-wrap.can-r {
    -webkit-mask-image: none;
    mask-image: none;
  }
  .content { max-width: none; padding: 0; }
  pre { border: 1px solid var(--border); }
}

/* ================================================================
   文言（lzh）· 仿古縱排式
   僅作用於 html[data-locale="lzh"]，其他語言版面一仍其舊：
   豎排右起（vertical-rl）、句讀悉去（app.js 剝除標點）、
   仿宋字體、宣紙墨色、上下界框、題籤朱印、着重圓點；
   表格／架構圖化為「箋條」（app.js 轉說文體例），
   全卷文字皆豎；惟代碼之「箋」（符號非文字，豎排即毀）
   仍作橫排插頁，以保可用。
   ================================================================ */

/* —— 色彩：宣紙 · 墨 · 朱（晝） —— */
html[data-locale="lzh"] {
  --bg: #efe7d3;
  --paper: #f9f3e3;
  --text: #3a3226;
  --heading: #272013;
  --muted: #7c6f58;
  --faint: #a99a7f;
  --border: #e0d4b8;
  --border-strong: #c9b995;
  --accent: #b03a2e;            /* 朱 */
  --accent-strong: #8c2c22;
  --accent-soft: #f6e7e0;
  --accent-border: #dfb3a6;
  --warn: #92600a;
  --warn-soft: #f7eed7;
  --warn-border: #e4d1a0;
  --warn-strong: #b45309;
  --danger: #a02c21;
  --danger-soft: #f8e8e3;
  --danger-border: #e3b6ab;
  --info: #4c5a66;
  --info-soft: #eceadf;
  --info-border: #c8c1a8;
  --sidebar-bg: #211a11;
  --sidebar-text: #d3c5a6;
  --sidebar-muted: #8a7c63;
  --sidebar-strong: #f4ecd8;
  --sidebar-border: #35291a;
  --sidebar-hover: #2f2415;
  --sidebar-active: #e0876b;
  --sidebar-scrollbar: #4d3f2b;
  --code-bg: #181410;
  --code-text: #e8dfc6;
  --inline-code-bg: #eee4c9;
  --inline-code-text: #5c4526;
  --th-bg: #eee5cc;
  --th-text: #4a3d28;
  --row-alt: #f4ecd8;
  --node-bg: #f9f3e3;
  /* 縱排行長（一欄之高）：桌面 44em，行長隨視口收斂 */
  --lzh-line: min(44em, calc(100dvh - 104px));
}

/* —— 色彩：玄夜 · 墨 · 朱（夜） —— */
html[data-locale="lzh"][data-theme="dark"] {
  --bg: #13100a;
  --paper: #1c1710;
  --text: #e2d6b9;
  --heading: #f1e8d2;
  --muted: #a2937a;
  --faint: #75684e;
  --border: #2f2617;
  --border-strong: #4b3c26;
  --accent: #d2725c;
  --accent-strong: #e39a83;
  --accent-soft: rgba(210, 114, 92, 0.13);
  --accent-border: rgba(210, 114, 92, 0.4);
  --warn: #d3a24a;
  --warn-soft: rgba(211, 162, 74, 0.12);
  --warn-border: rgba(211, 162, 74, 0.4);
  --warn-strong: #e3b45f;
  --danger: #d96b5b;
  --danger-soft: rgba(217, 107, 91, 0.12);
  --danger-border: rgba(217, 107, 91, 0.4);
  --info: #9db4c0;
  --info-soft: rgba(157, 180, 192, 0.1);
  --info-border: rgba(157, 180, 192, 0.35);
  --sidebar-bg: #0f0c07;
  --sidebar-text: #c9bb9d;
  --sidebar-muted: #7c6e56;
  --sidebar-strong: #efe6cf;
  --sidebar-border: #241c0f;
  --sidebar-hover: #241c0f;
  --sidebar-active: #d98a6d;
  --sidebar-scrollbar: #3f3320;
  --code-bg: #0c0a06;
  --code-text: #ddd2b5;
  --inline-code-bg: #262014;
  --inline-code-text: #cdbd96;
  --th-bg: #241d11;
  --th-text: #cfc09f;
  --row-alt: #1e1810;
  --node-bg: #1c1710;
}

/* —— 字體：仿宋刻本 —— */
html[data-locale="lzh"] body {
  font-family: "Songti SC", "Songti TC", "STSong", "Noto Serif CJK SC",
    "Noto Serif CJK TC", "Source Han Serif SC", "Source Han Serif TC",
    "SimSun", "NSimSun", "PMingLiU", "MingLiU", serif;
  letter-spacing: 0.06em;
}

html[data-locale="lzh"] ::selection { background: rgba(176, 58, 46, 0.22); }

/* —— 版面：卷首在右，自右而左 —— */
html[data-locale="lzh"] .layout { flex-direction: row-reverse; }

/* 側欄標記：朱印底色 */
html[data-locale="lzh"] .brand-mark {
  background: linear-gradient(135deg, #8c2c22, #c4553f);
}

/* —— 側欄目錄：豎排界行（欄目自右而左，滿行復起於下） —— */
html[data-locale="lzh"] .nav {
  display: flex;
  flex-direction: row-reverse;
  flex-wrap: wrap;
  align-items: flex-start;
  align-content: flex-start;
  gap: 12px 8px;
  padding: 18px 16px 22px;
}

html[data-locale="lzh"] .nav a {
  writing-mode: vertical-rl;
  height: 12em;
  padding: 9px 6px;
  font-size: 13.5px;
  line-height: 1.2;
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

html[data-locale="lzh"] .nav a.active {
  background: rgba(207, 122, 78, 0.16);
  color: var(--sidebar-active);
}

html[data-locale="lzh"] .nav a.active:active {
  background: rgba(207, 122, 78, 0.26);
  color: var(--sidebar-active);
}

html[data-locale="lzh"] .nav-group {
  writing-mode: vertical-rl;
  height: auto;
  padding: 0 3px;
  margin: 0 7px 0 1px;
  font-size: 11px;
  letter-spacing: 0.32em;
  white-space: nowrap;
}

/* —— 正文卷面：豎排右起，橫向展卷 —— */
html[data-locale="lzh"] .content {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  width: auto;
  max-width: none;
  height: var(--lzh-line);
  min-height: 21em;
  margin: 0;
  padding: 26px 30px 34px 44px;
  background: var(--paper);
  border-inline: 3px double var(--border-strong);   /* 上下界框 */
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
  line-height: 2.05;
}

html[data-locale="lzh"] .content::-webkit-scrollbar { height: 8px; }
html[data-locale="lzh"] .content::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

/* —— 標題與段落：間距皆沿行軸（block 軸） —— */
html[data-locale="lzh"] .content h1 {
  margin: 0;
  letter-spacing: 0.12em;
}

html[data-locale="lzh"] .content h2 {
  margin: 0;
  margin-block-start: 2.1em;
  padding: 0 0 0.4em;
  border: none;
  border-inline-end: 3px solid var(--accent);   /* 欄底朱槓 */
  font-size: 21px;
}

html[data-locale="lzh"] .content h3 {
  margin: 0;
  margin-block-start: 1.6em;
}

html[data-locale="lzh"] .content h4 {
  margin: 0;
  margin-block-start: 1.3em;
}

html[data-locale="lzh"] .content h2,
html[data-locale="lzh"] .content h3,
html[data-locale="lzh"] .content h4 {
  scroll-margin-block-start: 26px;
  scroll-margin-inline-start: 10px;
}

html[data-locale="lzh"] .content p {
  margin: 0;
  margin-block-start: 1em;
}

html[data-locale="lzh"] .content .page-lead {
  margin: 0;
  margin-block-start: 0.9em;
}

html[data-locale="lzh"] .content ul,
html[data-locale="lzh"] .content ol {
  margin: 0;
  margin-block-start: 1em;
  padding: 0;
  padding-block-start: 1.5em;   /* 縮進於右（首欄之側） */
}

html[data-locale="lzh"] .content li {
  margin: 0;
  margin-block-start: 0.4em;
}

/* 着重：朱點於字側（古人批點之法） */
html[data-locale="lzh"] .content strong {
  font-weight: 600;
  color: var(--heading);
  -webkit-text-emphasis: filled dot var(--accent);
  text-emphasis: filled dot var(--accent);
  text-emphasis-position: over right;
}

html[data-locale="lzh"] .content hr {
  border: none;
  border-inline-start: 2px solid var(--border-strong);
  inline-size: 42%;
  margin: 0;
  margin-block-start: 1.8em;
}

html[data-locale="lzh"] .content :not(pre) > code {
  padding: 0.06em 0.32em;
  letter-spacing: 0;
}

/* —— 頁首：題籤與朱印 —— */
html[data-locale="lzh"] .content .page-header {
  margin: 0;
  margin-block-end: 1.4em;
  padding: 0;
}

html[data-locale="lzh"] .content .page-header h1 {
  display: inline-block;
  font-size: 29px;
  line-height: 1.45;
  padding: 0.5em 0.42em;
  margin: 0;
  margin-block-end: 0.5em;
  border: 1.5px solid var(--accent-border);
  background: var(--accent-soft);
  border-radius: 4px;
}

/* 「晏陽之印」：右行先讀，白文朱底 */
html[data-locale="lzh"] .content .page-header h1::after {
  content: "晏陽\A之印";
  white-space: pre;
  display: inline-block;
  background: #a2372b;
  color: #f6efdd;
  font-size: 0.34em;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.14em;
  padding: 0.4em 0.34em;
  margin-inline-start: 0.7em;
  border-radius: 2px;
  box-shadow: inset 0 0 0 1px rgba(246, 239, 221, 0.4);
  vertical-align: middle;
}

html[data-locale="lzh"] .content .hero { padding: 0.3em 0; }

html[data-locale="lzh"] .content .hero .eyebrow { margin: 0; }

html[data-locale="lzh"] .content .hero h1 { margin: 0; margin-block-start: 1em; }

html[data-locale="lzh"] .content .hero .lead {
  max-width: none;
  margin: 0;
  margin-block-start: 0.7em;
}

html[data-locale="lzh"] .content .breadcrumb {
  margin: 0;
  margin-block-end: 0.9em;
}

/* —— 提示框：豎排，界角收方 —— */
html[data-locale="lzh"] .content .admonition {
  margin: 0;
  margin-block-start: 1.2em;
  padding: 12px 14px;
  border-radius: 4px;
}

html[data-locale="lzh"] .content .admonition .admonition-title {
  margin: 0;
  margin-block-end: 0.45em;
}

html[data-locale="lzh"] .content .admonition p {
  margin: 0;
  margin-block-start: 0.55em;
}

html[data-locale="lzh"] .content .admonition p:first-child { margin-block-start: 0; }

/* —— 首頁特色卡：豎排界行一列（自右而左魚貫） —— */
html[data-locale="lzh"] .content .cards {
  display: flex;
  flex-direction: column;        /* 行軸即 block 軸：右起左行 */
  flex-wrap: nowrap;
  gap: 12px;
  margin: 0;
  margin-block-start: 1.3em;
}

html[data-locale="lzh"] .content .card {
  padding: 14px 12px;
}

html[data-locale="lzh"] .content .card .card-icon {
  margin: 0;
  margin-block-end: 0.5em;
}

html[data-locale="lzh"] .content .card h3 {
  margin: 0;
  margin-block-end: 0.45em;
}

html[data-locale="lzh"] .content .card p {
  margin: 0;
  line-height: 1.95;
}

/* —— 頁內目錄：豎排（條目自右而左，一如界行） —— */
html[data-locale="lzh"] .content .page-toc {
  margin: 0;
  margin-block-start: 1.4em;
  padding: 12px 16px;
}

html[data-locale="lzh"] .content .page-toc b {
  margin: 0;
  margin-block-end: 0.5em;
}

html[data-locale="lzh"] .content .page-toc ol {
  padding: 0;
  padding-block-start: 1.3em;
}

html[data-locale="lzh"] .content .page-toc li {
  margin: 0;
  margin-block-start: 0.35em;
}

/* —— 目錄卡、步驟、徽章 —— */
html[data-locale="lzh"] .content .steps {
  margin: 0;
  margin-block-start: 1.2em;
}

html[data-locale="lzh"] .content .step {
  border: none;
  border-block-start: 2px solid var(--border-strong);
  padding: 0;
  padding-block-start: 2.4em;
  margin: 0;
  margin-block-start: 1.1em;
}

html[data-locale="lzh"] .content .step:last-child {
  padding-block-start: 0.5em;
  border-block-start-color: transparent;
}

html[data-locale="lzh"] .content .step::before {
  left: auto;
  top: 0;
  right: -17px;
  border: 4px solid var(--paper);
}

html[data-locale="lzh"] .content .step h3 {
  margin: 0;
  margin-block-end: 0.4em;
}

/* —— 箋條（表之古式）：連續豎排條目，右起左行，滿欄復起於左 ——
   由 app.js 就每表生成：表目（欄名小字）＋條目（天干朱印＋朱文頭詞＋釋義） */
html[data-locale="lzh"] .content .lzh-tlist {
  display: block;
  height: calc(var(--lzh-line) - 68px);
  margin: 0;
  margin-block-start: 1.2em;
  line-height: 1.9;
}

/* 表目：欄名小字一行，朱點相隔（偽元素作點，去句讀所不能剝） */
html[data-locale="lzh"] .content .lzh-thead {
  font-size: 0.68em;
  color: var(--faint);
  letter-spacing: 0.12em;
  margin-inline-end: 1em;
}

html[data-locale="lzh"] .content .lzh-thd-sep {
  color: var(--accent);
  padding-inline: 0.3em;
}

html[data-locale="lzh"] .content .lzh-thd-sep::before { content: "·"; }

html[data-locale="lzh"] .content .lzh-trow {
  margin-inline-start: 0.55em;   /* 與前條之隙（居其上端） */
}

/* 天干朱印：甲乙丙丁……周而復始 */
html[data-locale="lzh"] .content .lzh-tmark {
  display: inline-block;
  background: #a2372b;
  color: #f6efdd;
  font-size: 0.62em;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.08em;
  padding: 0.34em 0.16em;
  border-radius: 2px;
  margin-inline-end: 0.4em;
  box-shadow: inset 0 0 0 1px rgba(246, 239, 221, 0.35);
  vertical-align: middle;
}

/* 頭詞：朱文（字典之體） */
html[data-locale="lzh"] .content .lzh-thw {
  color: var(--accent-strong);
  font-weight: 600;
  letter-spacing: 0.02em;
}

html[data-locale="lzh"] .content .lzh-thw code,
html[data-locale="lzh"] .content .lzh-tval code,
html[data-locale="lzh"] .content .lzh-tdef code { letter-spacing: 0; }

/* 欄目標：批註小籤（三欄以上之表中間欄用之） */
html[data-locale="lzh"] .content .lzh-tlabel {
  display: inline-block;
  font-size: 0.6em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 2px;
  padding: 0.22em 0.1em;
  line-height: 1.3;
  letter-spacing: 0.06em;
  margin-inline: 0.32em;
  vertical-align: middle;
}

html[data-locale="lzh"] .content .lzh-tdef { margin-inline-start: 0.3em; }

/* 脈絡條列：架構圖之古式，頭詞依節點而設色 */
html[data-locale="lzh"] .content .lzh-trow.lzh-transport .lzh-thw { color: var(--info); }
html[data-locale="lzh"] .content .lzh-trow.lzh-native .lzh-thw { color: var(--warn-strong); }

/* 按語：圖例之古式 */
html[data-locale="lzh"] .content .lzh-anno {
  display: block;
  margin: 0;
  margin-block-start: 0.9em;
  font-size: 0.82em;
  color: var(--muted);
  line-height: 2;
}

html[data-locale="lzh"] .content .lzh-anno::before {
  content: "按";
  display: inline-block;
  background: #a2372b;
  color: #f6efdd;
  font-size: 0.8em;
  font-weight: 600;
  line-height: 1.35;
  padding: 0.32em 0.14em;
  border-radius: 2px;
  margin-inline-end: 0.45em;
  box-shadow: inset 0 0 0 1px rgba(246, 239, 221, 0.35);
  vertical-align: middle;
}

/* —— 目錄卡：豎排界行，卡作全欄之籤，自右而左魚貫 —— */
html[data-locale="lzh"] .content .toc-cards {
  display: block;
  height: calc(var(--lzh-line) - 68px);
  margin: 0;
  margin-block-start: 1.3em;
}

html[data-locale="lzh"] .content .toc-card {
  display: inline-block;
  height: 100%;
  margin-inline-end: 0.9em;
  padding: 10px 12px;
}

html[data-locale="lzh"] .content .toc-card b {
  margin: 0;
  margin-block-end: 0.4em;
  color: var(--accent-strong);
}

/* —— 代碼題註：豎排題籤，居「箋」之右 —— */
html[data-locale="lzh"] .content .code-caption {
  display: block;
  margin: 0;
  margin-block-start: 1.2em;
  margin-block-end: -0.4em;
  font-size: 0.82em;
  color: var(--muted);
}

/* —— 橫排之「箋」：惟代碼一物（符號非文字，豎排即毀）——
   雙線界框如夾頁之狀；上限行高，內滥 */
html[data-locale="lzh"] .content pre,
html[data-locale="lzh"] .content .code-block-wrap {
  writing-mode: horizontal-tb;
}

html[data-locale="lzh"] .content .code-block-wrap,
html[data-locale="lzh"] .content pre {
  margin: 0;
}

html[data-locale="lzh"] .content pre {
  max-height: calc(var(--lzh-line) - 72px);
  overflow: auto;
  border: 1px solid var(--border-strong);
  outline: 1px solid var(--border);
  outline-offset: 3px;
}

/* —— 步驟：漢字朱印序數（一二三……），仿古印之方 —— */
html[data-locale="lzh"] .content .step::before {
  left: auto;
  top: 0;
  right: -17px;
  border: 4px solid var(--paper);
  content: counter(step, cjk-ideographic);
  width: 30px;
  height: 30px;
  border-radius: 4px;
  font-size: 15px;
  letter-spacing: 0;
}

html[data-locale="lzh"] .content .step h3 {
  margin: 0;
  margin-block-end: 0.4em;
}

/* —— 徽章：圓角改方，以合古式 —— */
html[data-locale="lzh"] .content .pill {
  border-radius: 3px;
  padding: 0.05em 0.28em;
  letter-spacing: 0.08em;
}

/* —— 側欄主題之鈕：文字豎排 —— */
html[data-locale="lzh"] .sidebar-settings .theme-label {
  writing-mode: vertical-rl;
  letter-spacing: 0.1em;
}

/* —— 頁腳牌記：豎排右起 —— */
html[data-locale="lzh"] .footer {
  writing-mode: vertical-rl;
  height: 8.6em;
  padding: 16px 38px 14px 46px;
  line-height: 2;
}

/* —— 響應式 —— */
@media (max-width: 960px) {
  html[data-locale="lzh"] {
    --lzh-line: min(34em, calc(100dvh - 176px));
  }

  /* 抽屜自右而啟 */
  html[data-locale="lzh"] .sidebar {
    left: auto;
    right: 0;
    transform: translateX(102%);
  }

  html[data-locale="lzh"] .sidebar.open { transform: translateX(0); }

  html[data-locale="lzh"] .content {
    padding: 20px 18px 26px 36px;
  }

  html[data-locale="lzh"] .nav a { padding: 9px 7px; }

  /* 頂欄：題目與目錄之鈕豎排，如題籤 */
  html[data-locale="lzh"] .topbar .title {
    writing-mode: vertical-rl;
    white-space: normal;
    max-height: 3.1em;
    line-height: 1.3;
  }

  html[data-locale="lzh"] .topbar .menu-btn {
    writing-mode: vertical-rl;
    padding: 5px 8px;
    line-height: 1.3;
  }
}

@media (max-width: 560px) {
  html[data-locale="lzh"] {
    --lzh-line: min(27em, calc(100dvh - 176px));
  }

  html[data-locale="lzh"] .content .page-header h1 { font-size: 25px; }
}

/* —— 打印：退回橫排常式 —— */
@media print {
  html[data-locale="lzh"] .content {
    writing-mode: horizontal-tb;
    height: auto;
    min-height: 0;
    overflow: visible;
    border: none;
    padding: 0;
    background: none;
  }

  html[data-locale="lzh"] .content pre,
  html[data-locale="lzh"] .content .lzh-tlist,
  html[data-locale="lzh"] .content .toc-cards,
  html[data-locale="lzh"] .footer,
  html[data-locale="lzh"] .topbar .title,
  html[data-locale="lzh"] .topbar .menu-btn,
  html[data-locale="lzh"] .sidebar-settings .theme-label {
    writing-mode: horizontal-tb;
    height: auto;
    max-height: none;
    overflow: visible;
  }

  html[data-locale="lzh"] .content pre { overflow: auto; }

  html[data-locale="lzh"] .content .lzh-trow { display: block; margin: 4px 0; }
  html[data-locale="lzh"] .content .lzh-thead { display: block; margin: 0 0 4px; }
  html[data-locale="lzh"] .content .toc-card { display: block; margin: 6px 0; }
}