/* ==========================================================================
   base — 基础重置、根变量、全局排版
   ========================================================================== */

:root {
  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-ink: #181c22;
  --color-ink-secondary: #5c6570;
  --color-border: #d9dee5;
  --color-accent: #178a63;
  --color-accent-hover: #126e4f;
  --color-terminal-bg: #14181e;
  --color-terminal-text: #c9d2dc;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --container-width: 1200px;
  --container-padding: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --header-height: 68px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-mono);
  line-height: 1.35;
  color: var(--color-ink);
}

h1 {
  font-size: 34px;
  font-weight: 600;
}

h2 {
  font-size: 24px;
  font-weight: 600;
}

h3 {
  font-size: 17px;
  font-weight: 600;
}

p {
  margin-bottom: 0;
}

button {
  font-family: var(--font-sans);
  border: none;
  background: none;
  cursor: pointer;
}

/* ==========================================================================
   layout — 页头、页脚、主容器、面包屑、页标题区
   ========================================================================== */

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-lockup {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0;
}

.brand-name:hover {
  color: var(--color-ink);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-secondary);
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-ink);
  background-color: var(--color-surface);
}

.nav-toggle-label {
  font-family: var(--font-sans);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list li a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink-secondary);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  background-color: var(--color-bg);
  color: var(--color-ink);
}

.nav-list li a.is-current {
  background-color: var(--color-bg);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.version-badge {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-secondary);
  background-color: var(--color-surface);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.version-badge:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
}

.btn-secondary:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn-outline {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

.site-main {
  flex: 1;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding) 64px;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 13px;
}

.breadcrumb a {
  color: var(--color-ink-secondary);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

.page-header {
  margin-bottom: 44px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.page-header .page-index,
.page-header .page-code,
.page-header .page-number,
.page-header .page-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.page-title {
  font-size: 32px;
  margin-bottom: 12px;
}

.page-description {
  max-width: 640px;
  color: var(--color-ink-secondary);
  font-size: 15px;
}

/* 页脚 */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .brand-name {
  font-size: 18px;
}

.footer-brand p {
  color: var(--color-ink-secondary);
  font-size: 13px;
  margin-top: 8px;
  max-width: 320px;
}

.current-version {
  display: block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-secondary);
}

.current-version a {
  color: var(--color-ink-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.current-version a:hover {
  color: var(--color-accent);
}

.footer-heading {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.footer-topics ul li,
.footer-legal ul li {
  margin-bottom: 8px;
}

.footer-topics ul li a,
.footer-legal ul li a {
  font-size: 13px;
  color: var(--color-ink-secondary);
}

.footer-topics ul li a:hover,
.footer-legal ul li a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding);
  font-size: 12px;
  color: var(--color-ink-secondary);
  text-align: left;
}

/* ==========================================================================
   components — 首页模块
   ========================================================================== */

/* 终端式首屏 */

.hero-terminal {
  background-color: var(--color-terminal-bg);
  color: var(--color-terminal-text);
  padding: 72px 0 0;
}

.hero-copy {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 16px;
  grid-column: 1 / -1;
}

.hero-copy h1 {
  color: #ffffff;
  font-size: 36px;
  margin-bottom: 16px;
  grid-column: 1 / -1;
}

.hero-lead {
  color: var(--color-terminal-text);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 28px;
  grid-column: 1 / -1;
}

.hero-actions {
  display: flex;
  gap: 12px;
  grid-column: 1 / -1;
}

.hero-actions .btn-primary {
  background-color: var(--color-accent);
}

.hero-actions .btn-secondary {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--color-terminal-text);
}

.hero-actions .btn-secondary:hover {
  border-color: #ffffff;
  color: #ffffff;
}

.hero-media {
  grid-column: 1 / -1;
  width: 100%;
}

.hero-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.scroll-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-terminal-text);
  background-color: rgba(255, 255, 255, 0.04);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color 0.2s ease;
}

.scroll-hint:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

/* 服务目录总览 */

.catalog-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

.section-heading {
  margin-bottom: 32px;
}

.section-heading h2 {
  margin-bottom: 8px;
}

.section-heading p {
  color: var(--color-ink-secondary);
  font-size: 14px;
  max-width: 560px;
}

.catalog-table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-surface);
}

.catalog-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.6fr 0.8fr;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}

.catalog-row:last-child {
  border-bottom: none;
}

.catalog-head {
  background-color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink-secondary);
}

.catalog-cell {
  font-size: 14px;
}

.catalog-cell a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

/* 功能字段说明摘要 */

.field-summary-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 0;
}

.field-summary-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.field-summary-copy {
  max-width: 560px;
}

.field-summary-list {
  margin: 24px 0;
}

.field-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.field-item:first-child {
  border-top: 1px solid var(--color-border);
}

.field-name {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.field-item p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
}

.version-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  background-color: var(--color-bg);
  color: var(--color-ink-secondary);
  border: 1px solid var(--color-border);
}

.text-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  margin-top: 16px;
}

.field-summary-media {
  width: 100%;
}

.field-summary-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* 使用示例编号列表 */

.examples-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

.examples-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.example-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.example-item:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(24, 28, 34, 0.06);
}

.example-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.example-content h3 {
  margin-bottom: 8px;
}

.example-content p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 12px;
}

.example-content a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

/* 更新记录时间线 */

.timeline-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 0;
}

.timeline-section .section-heading {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--container-padding);
}

.timeline {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 28px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background-color: var(--color-surface);
  border: 3px solid var(--color-accent);
}

.timeline-version {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  max-width: 640px;
}

.timeline-section .text-link {
  display: block;
  max-width: var(--container-width);
  margin: 24px auto 0;
  padding: 0 var(--container-padding);
}

/* 引用规则与内容边界入口 */

.rules-entry-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

.rules-entry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.rules-entry-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
}

.rules-entry-card h2 {
  margin-bottom: 12px;
}

.rules-entry-card p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 20px;
  max-width: 440px;
}

/* 首页 FAQ */

.faq-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 64px 0;
}

.faq-section .section-heading {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--container-padding);
}

.faq-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  background-color: var(--color-bg);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item > p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-ink-secondary);
}

.faq-section .text-link {
  display: block;
  max-width: var(--container-width);
  margin: 24px auto 0;
  padding: 0 var(--container-padding);
}

/* ==========================================================================
   components — 内页通用模块
   ========================================================================== */

/* 相关主题链接（fwzn / gnsm 使用 nav） */

.related-topics {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.related-heading,
.related-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.related-topics ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-topics ul li a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-ink-secondary);
  background-color: var(--color-surface);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-topics ul li a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 通用 section 间距 */

.inner-main section {
  margin-bottom: 56px;
}

.inner-main section:last-of-type {
  margin-bottom: 0;
}

/* ==========================================================================
   pages — 服务总览页 txhy/fwzn.html
   ========================================================================== */

.catalog-section .catalog-row {
  grid-template-columns: 1.2fr 1fr 1.6fr 0.8fr;
  align-items: start;
}

.service-name .mono-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-secondary);
  margin-bottom: 4px;
}

.service-name h3 {
  font-size: 16px;
}

.cell-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-secondary);
  margin-bottom: 4px;
}

.service-audience p,
.service-scope p {
  font-size: 14px;
  color: var(--color-ink-secondary);
}

.service-entry a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.catalog-figure {
  margin-top: 24px;
}

.catalog-figure img,
.group-figure img,
.content-media img,
.example-figure img,
.timeline-figure img,
.format-figure img,
.unanswered-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.catalog-figure figcaption,
.group-figure figcaption,
.content-media figcaption,
.example-figure figcaption,
.timeline-figure figcaption,
.format-figure figcaption,
.unanswered-media figcaption {
  font-size: 12px;
  color: var(--color-ink-secondary);
  margin-top: 8px;
  text-align: center;
}

/* 免费版与正版差异 */

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.compare-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.compare-card h3 {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.compare-card ul li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 10px;
}

.compare-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

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

.compare-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-ink-secondary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

/* 适用对象清单 */

.audience-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.audience-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.audience-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.audience-content h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.audience-content p {
  font-size: 13px;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
}

.audience-content a {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

/* ==========================================================================
   pages — 功能说明页 txhy/gnsm.html
   ========================================================================== */

.dict-table-wrap {
  overflow-x: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.dict-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.dict-table th {
  background-color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink-secondary);
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
}

.dict-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  vertical-align: top;
}

.dict-table tr:last-child td {
  border-bottom: none;
}

.dict-table td:first-child {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-ink);
  white-space: nowrap;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--color-border);
  color: var(--color-ink-secondary);
  background-color: var(--color-bg);
}

.tag-free {
  border-color: #c9a227;
  color: #8a6d1a;
  background-color: #faf6e8;
}

.tag-pro {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: #edf7f3;
}

/* 核对方式步骤 */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.step-card .step-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.step-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--color-ink-secondary);
}

.content-media {
  max-width: 720px;
}

/* ==========================================================================
   pages — 使用示例页 txhy/syal.html
   ========================================================================== */

.example-list .section-intro,
.checklist .section-intro {
  color: var(--color-ink-secondary);
  font-size: 14px;
  margin-bottom: 28px;
  max-width: 640px;
}

.example-list .example-item {
  margin-bottom: 24px;
  padding: 28px;
}

.example-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.example-number {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.example-meta h3 {
  font-size: 18px;
}

.example-scene {
  font-size: 14px;
  margin-bottom: 16px;
}

.example-scene strong {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-ink);
  margin-right: 6px;
}

.example-steps {
  margin: 16px 0;
  padding-left: 0;
}

.example-steps li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
  counter-increment: step;
}

.example-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.example-result {
  font-size: 14px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.example-result strong {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-right: 6px;
}

.example-figure {
  margin-top: 40px;
  max-width: 720px;
}

/* 操作核对清单 */

.checklist-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.checklist-items li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 14px;
  color: var(--color-ink-secondary);
  position: relative;
  padding-left: 40px;
}

.checklist-items li::before {
  content: "✓";
  position: absolute;
  left: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 700;
}

/* syal 相关主题使用 aside */

.syal .related-topics ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   pages — 更新记录页 txhy/gxrz.html
   ========================================================================== */

.current-version-block {
  background-color: var(--color-terminal-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 48px;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background-color: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-ink-secondary);
}

.terminal-dot:nth-child(1) {
  background-color: #e05c5c;
}

.terminal-dot:nth-child(2) {
  background-color: #e0b45c;
}

.terminal-dot:nth-child(3) {
  background-color: #5ce08a;
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-terminal-text);
  margin-left: 8px;
}

.terminal-body {
  padding: 28px;
}

.terminal-body h2 {
  color: #ffffff;
  font-size: 18px;
  margin-bottom: 16px;
}

.version-number {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.terminal-body p {
  color: var(--color-terminal-text);
  font-size: 14px;
  line-height: 1.8;
}

/* 版本时间线 */

.version-timeline .section-intro {
  color: var(--color-ink-secondary);
  font-size: 14px;
  margin-bottom: 28px;
  max-width: 640px;
}

.timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.timeline-list .timeline-item {
  padding-left: 40px;
  padding-bottom: 28px;
}

.timeline-list .timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-list .timeline-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background-color: var(--color-surface);
  border: 3px solid var(--color-accent);
}

.timeline-list .timeline-version {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.timeline-content h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  max-width: 640px;
}

/* 信息适用性提示 */

.applicability-note {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.applicability-note h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.applicability-note p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
  max-width: 640px;
}

.applicability-note p:last-child {
  margin-bottom: 0;
}

.timeline-figure {
  margin-top: 40px;
  max-width: 720px;
}

/* ==========================================================================
   pages — 引用规则页 txhy/yzgf.html
   ========================================================================== */

.content-section {
  margin-bottom: 56px;
}

.section-title {
  font-size: 22px;
  margin-bottom: 12px;
}

.section-intro {
  color: var(--color-ink-secondary);
  font-size: 14px;
  margin-bottom: 24px;
  max-width: 640px;
}

.citations-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.citation-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.citation-item .item-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.citation-item p {
  font-size: 14px;
  color: var(--color-ink-secondary);
}

.format-figure {
  margin-bottom: 24px;
}

.format-figure img {
  max-width: 720px;
}

.code-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.code-block {
  background-color: var(--color-terminal-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-terminal-text);
  padding: 10px 16px;
  background-color: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-block pre {
  padding: 20px;
  overflow-x: auto;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-terminal-text);
  white-space: pre-wrap;
  word-break: break-all;
}

.boundary-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 12px;
  max-width: 720px;
}

.boundary-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  color: var(--color-accent);
}

/* yzgf 相关主题 */

.yzgf .related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.yzgf .related-list li a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-ink-secondary);
  background-color: var(--color-surface);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.yzgf .related-list li a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   pages — 职能分工页 txhy/fwtd.html
   ========================================================================== */

.groups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.group-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.group-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(24, 28, 34, 0.06);
}

.group-card-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.group-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
}

.group-card-header h3 {
  font-size: 16px;
}

.group-card p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 16px;
  min-height: 72px;
}

.group-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.group-figure {
  margin-top: 32px;
}

/* 协作与反馈方式 */

.collab-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.collab-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.collab-step .step-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.collab-step h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.collab-step p {
  font-size: 14px;
  color: var(--color-ink-secondary);
}

.collab-note {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.collab-note p {
  font-size: 13px;
  color: var(--color-ink-secondary);
}

/* fwtd 相关主题 */

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(24, 28, 34, 0.06);
}

.related-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
}

.related-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
}

.related-desc {
  font-size: 13px;
  color: var(--color-ink-secondary);
}

.related-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
}

.related-links-item {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

/* ==========================================================================
   pages — 常见问题页 txhy/cjwt.html
   ========================================================================== */

.faq-groups .faq-item {
  margin-bottom: 12px;
}

.faq-answer {
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* 未覆盖问题处理 */

.unanswered-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.unanswered-text p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 12px;
  max-width: 560px;
}

.unanswered-links {
  margin-top: 16px;
}

.unanswered-links li {
  margin-bottom: 8px;
}

.unanswered-links li a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.unanswered-media img {
  max-width: 480px;
}

/* cjwt 相关主题 */

.cjwt .related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cjwt .related-list li a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-ink-secondary);
  background-color: var(--color-surface);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.cjwt .related-list li a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   pages — 404 页
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px var(--container-padding);
  flex: 1;
}

.error-panel {
  text-align: center;
  max-width: 480px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 56px 40px;
}

.error-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-panel p {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-bottom: 24px;
}

/* ==========================================================================
   responsive — 响应式断点
   ========================================================================== */

@media (max-width: 1024px) {
  .groups-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .groups-grid .group-card p {
    min-height: 0;
  }

  .citations-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .header-shell {
    gap: 16px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
    gap: 0;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list li a {
    padding: 12px var(--container-padding);
    border-radius: 0;
    font-size: 15px;
  }

  .nav-list li a.is-current {
    background-color: transparent;
    border-left: 3px solid var(--color-accent);
  }

  .header-tools .btn-sm {
    display: none;
  }

  .hero-copy {
    grid-template-columns: 1fr;
  }

  .field-summary-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .examples-list {
    grid-template-columns: 1fr;
  }

  .rules-entry-grid {
    grid-template-columns: 1fr;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .audience-list {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .checklist-items {
    grid-template-columns: 1fr;
  }

  .code-blocks {
    grid-template-columns: 1fr;
  }

  .collab-steps {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .unanswered-layout {
    grid-template-columns: 1fr;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .catalog-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .catalog-head {
    display: none;
  }

  .catalog-section .catalog-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 640px) {
  :root {
    --container-padding: 16px;
  }

  .header-shell {
    height: 60px;
  }

  .brand-tag {
    display: none;
  }

  .brand-name {
    font-size: 17px;
  }

  .version-badge {
    font-size: 11px;
    padding: 4px 10px;
  }

  .hero-terminal {
    padding-top: 48px;
  }

  .hero-copy {
    padding-bottom: 40px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .catalog-section {
    padding: 48px var(--container-padding);
  }

  .catalog-row {
    padding: 16px;
  }

  .field-summary-section,
  .timeline-section,
  .faq-section {
    padding: 48px 0;
  }

  .examples-section,
  .rules-entry-section {
    padding: 48px var(--container-padding);
  }

  .rules-entry-card {
    padding: 24px;
  }

  .inner-main {
    padding: 24px var(--container-padding) 48px;
  }

  .page-header {
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 26px;
  }

  .terminal-body {
    padding: 20px;
  }

  .current-version-block {
    margin-bottom: 32px;
  }

  .compare-card {
    padding: 20px;
  }

  .audience-list li {
    padding: 18px;
  }

  .example-list .example-item {
    padding: 20px;
  }

  .checklist-items li {
    padding: 14px 14px 14px 38px;
  }

  .checklist-items li::before {
    left: 12px;
    top: 12px;
  }

  .citation-item {
    padding: 20px;
  }

  .group-card {
    padding: 20px;
  }

  .collab-step {
    padding: 20px;
  }

  .related-card {
    padding: 16px;
  }

  .error-panel {
    padding: 40px 24px;
  }

  .error-code {
    font-size: 36px;
  }

  .timeline-list::before {
    left: 8px;
  }

  .timeline-list .timeline-item {
    padding-left: 32px;
  }

  .timeline-list .timeline-item::before {
    left: 2px;
    width: 11px;
    height: 11px;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-item {
    padding-left: 32px;
  }

  .timeline-item::before {
    left: 2px;
    width: 11px;
    height: 11px;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 14px;
  }

  .faq-item > p {
    padding: 0 16px 14px;
  }

  .faq-answer {
    padding: 0 16px 14px;
  }

  .footer-shell {
    padding: 40px var(--container-padding) 20px;
  }
}

@media (max-width: 390px) {
  .nav-toggle-label {
    font-size: 13px;
  }

  .nav-list li a {
    padding: 12px 16px;
  }

  .hero-copy h1 {
    font-size: 24px;
  }

  .hero-kicker {
    font-size: 12px;
  }

  .section-heading h2 {
    font-size: 20px;
  }

  .section-title {
    font-size: 20px;
  }

  .page-title {
    font-size: 24px;
  }

  .catalog-cell {
    font-size: 13px;
  }

  .field-name {
    font-size: 14px;
  }

  .field-item p {
    font-size: 13px;
  }

  .example-content h3 {
    font-size: 16px;
  }

  .example-content p {
    font-size: 13px;
  }

  .timeline-item p {
    font-size: 13px;
  }

  .compare-card ul li {
    font-size: 13px;
  }

  .audience-content p {
    font-size: 12px;
  }

  .dict-table td {
    font-size: 13px;
    padding: 12px 14px;
  }

  .dict-table th {
    padding: 12px 14px;
  }

  .step-card p {
    font-size: 13px;
  }

  .example-steps li {
    font-size: 13px;
  }

  .example-result {
    font-size: 13px;
  }

  .checklist-items li {
    font-size: 13px;
  }

  .citation-item p {
    font-size: 13px;
  }

  .boundary-list li {
    font-size: 13px;
  }

  .group-card p {
    font-size: 13px;
  }

  .collab-step p {
    font-size: 13px;
  }

  .related-desc {
    font-size: 12px;
  }

  .faq-answer p {
    font-size: 13px;
  }

  .unanswered-text p {
    font-size: 13px;
  }

  .error-panel p {
    font-size: 13px;
  }

  .footer-brand p {
    font-size: 12px;
  }

  .footer-topics ul li a,
  .footer-legal ul li a {
    font-size: 12px;
  }
}