/* =========================================================
   base / 基础变量与全局样式
   ========================================================= */
:root {
  --paper: #f5f0e6;
  --paper-deep: #ede5d6;
  --ink: #23261f;
  --ink-soft: #4a4d44;
  --ink-mute: #7a7d72;
  --red: #a33b2e;
  --red-dark: #8a2f24;
  --teal: #2f5d57;
  --teal-light: #3d736c;
  --white: #fffdf7;
  --line: #d8cfbe;
  --line-dark: #c2b8a4;
  --shadow-sm: 0 1px 3px rgba(35, 38, 31, 0.08);
  --shadow-md: 0 4px 12px rgba(35, 38, 31, 0.08);
  --radius: 6px;
  --radius-lg: 8px;
  --container: 1160px;
  --header-h: 68px;
  --serif: "Georgia", "Times New Roman", "Songti SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Consolas", "Liberation Mono", monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--red);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--red-dark);
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

p {
  margin-bottom: 1em;
}

ul,
ol {
  list-style-position: inside;
}

details summary {
  cursor: pointer;
}

details summary::-webkit-details-marker {
  display: none;
}

/* 基础动效：尊重系统减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* =========================================================
   layout / 全站骨架与版心
   ========================================================= */
.site-header {
  background-color: var(--ink);
  border-bottom: 3px solid var(--red);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* 品牌 */
.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: none;
}

.brand-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
}

.brand-tag {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 2px;
}

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color 0.2s ease, background-color 0.2s ease,
    border-color 0.2s ease;
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--white);
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--white);
  background-color: var(--red);
  border-color: var(--red);
  font-weight: 600;
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--white);
  border-radius: 1px;
}

/* 主内容 */
.site-main {
  min-height: 60vh;
}

.site-main.inner-main {
  background-color: var(--paper);
}

.inner-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 页脚 */
.site-footer {
  background-color: var(--ink);
  color: rgba(255, 255, 255, 0.7);
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h2 {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--white);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  max-width: var(--container);
  margin: 0 auto;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* 首页与内页共用：面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-mute);
  margin-bottom: 20px;
}

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

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

.breadcrumb-sep {
  color: var(--line-dark);
  margin: 0 2px;
}

.breadcrumb-current {
  color: var(--ink-mute);
}

/* 页面标题区（内页统一） */
.page-header {
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  margin-bottom: 10px;
  padding-left: 14px;
  border-left: 4px solid var(--red);
}

.page-description {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0;
}

/* 内页通用 section 标题 */
.section-title {
  font-size: 24px;
  margin-bottom: 14px;
}

/* 左右分栏布局（works / faq / policy） */
.page-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.layout-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

/* 侧栏在左边时使用 .sidebar-left */
.sidebar-left {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.sidebar-left .page-aside {
  grid-column: 1;
  grid-row: 1;
}

.sidebar-left .page-content {
  grid-column: 2;
  grid-row: 1;
}

.sidebar-left .faq-topic-side {
  grid-column: 1;
  grid-row: 1;
}

.sidebar-left .faq-panel {
  grid-column: 2;
  grid-row: 1;
}

/* 侧栏通用样式 */
.page-aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.aside-inner {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.aside-inner h2 {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--red);
}

.anchor-list {
  list-style: none;
}

.anchor-list li {
  margin-bottom: 2px;
}

.anchor-list a {
  display: block;
  padding: 7px 10px;
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease;
}

.anchor-list a:hover {
  color: var(--red);
  background-color: rgba(163, 59, 46, 0.06);
  border-left-color: var(--red);
  text-decoration: none;
}

/* 页面内容主区 */
.page-content {
  min-width: 0;
}

/* =========================================================
   components / 全站通用组件
   ========================================================= */

/* 编号档案条目（首页三件事 / 编号列表） */
.doc-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.doc-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--line-dark);
}

.doc-no {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--red);
  font-weight: 600;
  margin-bottom: 8px;
}

.doc-item h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.doc-item p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  flex-grow: 1;
}

.doc-item a {
  font-size: 14px;
  font-weight: 600;
}

/* 折叠块通用 */
details.faq-item,
details.block-item,
details.cross-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

details.faq-item summary,
details.block-item summary,
details.cross-item summary {
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  padding-right: 40px;
  list-style: none;
  transition: background-color 0.2s ease;
}

details.faq-item summary:hover,
details.block-item summary:hover,
details.cross-item summary:hover {
  background-color: rgba(163, 59, 46, 0.05);
}

details.faq-item summary::after,
details.block-item summary::after,
details.cross-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--red);
  font-weight: 400;
}

details[open].faq-item summary::after,
details[open].block-item summary::after,
details[open].cross-item summary::after {
  content: "−";
}

details.faq-item .faq-answer,
details.faq-item p,
details.block-item p,
details.cross-item p {
  padding: 0 18px 14px;
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

/* 图片容器通用 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

figcaption {
  font-size: 13px;
  color: var(--ink-mute);
  padding: 8px 2px 0;
  line-height: 1.5;
}

/* 内嵌小图 */
.content-media-inline {
  margin: 16px 0;
}

.content-media-inline img {
  max-height: 320px;
  object-fit: cover;
}

/* 相关链接行 */
.related-links {
  max-width: var(--container);
  margin: 40px auto 0;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-right: 6px;
}

.related-links-item {
  font-size: 14px;
  padding: 6px 14px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* =========================================================
   pages / 首页各模块样式
   ========================================================= */

/* 首屏对比区 */
.hero-compare {
  background-color: var(--paper);
  padding: 48px 0 0;
}

.hero-copy {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-size: 36px;
  line-height: 1.35;
  margin-bottom: 16px;
  grid-column: 1;
}

.hero-lead {
  font-size: 17px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  grid-column: 1;
}

.hero-note {
  font-size: 14px;
  color: var(--ink-mute);
  grid-column: 1;
}

.hero-media {
  grid-column: 2;
  grid-row: 1 / span 3;
}

.hero-figure img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-height: 360px;
  width: 100%;
  object-fit: cover;
}

/* 三入口对照 */
.entry-compare {
  max-width: var(--container);
  margin: 48px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.entry-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.entry-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.entry-card h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.entry-card p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 14px;
  flex-grow: 1;
}

.entry-card a {
  font-weight: 600;
  font-size: 14px;
}

/* 首页主内容图 */
.content-media-primary {
  max-width: var(--container);
  margin: 40px auto 0;
  padding: 0 24px;
}

.content-media-primary img {
  max-height: 420px;
  width: 100%;
  object-fit: cover;
}

/* 编号三件事 */
.numbered-guide {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 28px;
  margin-bottom: 8px;
}

.section-head p {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

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

/* 批次摘要 */
.batch-summary {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.batch-intro h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.batch-intro p {
  font-size: 15px;
  color: var(--ink-soft);
}

.batch-archive {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.archive-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.2s ease;
}

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

.archive-row:hover {
  background-color: rgba(163, 59, 46, 0.04);
}

.archive-no {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--teal);
  font-weight: 600;
}

.archive-row p {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

.archive-row a {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

/* 差异对比表 */
.compare-table-block {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.compare-wrap {
  overflow-x: auto;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 640px;
}

.compare-table th,
.compare-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.compare-table thead th {
  background-color: var(--ink);
  color: var(--white);
  font-weight: 600;
  font-size: 15px;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr:nth-child(even) {
  background-color: rgba(245, 240, 230, 0.5);
}

.compare-table tbody tr:hover {
  background-color: rgba(163, 59, 46, 0.04);
}

.compare-table th {
  color: var(--ink);
  font-weight: 600;
}

/* 双栏路标 */
.dual-direction {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.direction-col {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  border-top: 3px solid var(--teal);
}

.direction-col:nth-child(2) {
  border-top-color: var(--red);
}

.direction-col h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.direction-col p {
  font-size: 15px;
  color: var(--ink-soft);
}

.direction-col a {
  display: inline-block;
  font-weight: 600;
  font-size: 14px;
  margin-top: 4px;
}

/* 看前自查四步 */
.selfcheck-four {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.step-four-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  counter-increment: step;
  transition: box-shadow 0.2s ease;
}

.step-card:hover {
  box-shadow: var(--shadow-md);
}

.step-no {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--red);
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.step-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
  flex-grow: 1;
}

.step-card .step-exception {
  font-size: 13px;
  color: var(--red-dark);
  background-color: rgba(163, 59, 46, 0.05);
  padding: 8px 10px;
  border-radius: var(--radius);
  margin: 0;
}

.step-cta {
  margin-top: 28px;
  text-align: center;
}

.step-cta a {
  display: inline-block;
  padding: 10px 32px;
  background-color: var(--red);
  color: var(--white);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.step-cta a:hover {
  background-color: var(--red-dark);
  text-decoration: none;
}

/* FAQ 预览 */
.faq-preview {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.faq-fold-list {
  max-width: 760px;
}

.faq-more {
  margin-top: 20px;
}

.faq-more a {
  display: inline-block;
  font-weight: 600;
  font-size: 15px;
}

/* 边界窄条 */
.boundary-strip {
  max-width: var(--container);
  margin: 48px auto 0;
  padding: 0 24px;
}

.boundary-strip p {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

.boundary-strip a {
  font-weight: 600;
}

/* =========================================================
   pages / works 作品目录
   ========================================================= */
.content-section {
  margin-bottom: 44px;
}

.content-section h2 {
  font-size: 24px;
  margin-bottom: 14px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.content-section p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 1em;
}

/* 频道档案列表 */
.file-list {
  margin: 20px 0;
}

.file-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.file-item:last-child {
  border-bottom: none;
}

.file-item h3 {
  font-size: 17px;
  margin-bottom: 4px;
  grid-column: 2;
}

.file-item p {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
}

.file-tag {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--teal);
  background-color: rgba(47, 93, 87, 0.08);
  padding: 4px 8px;
  border-radius: var(--radius);
  align-self: start;
  text-align: center;
}

/* 题材入口列表 */
.theme-list {
  margin: 20px 0;
}

.theme-item {
  padding: 14px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.theme-item:hover {
  background-color: rgba(163, 59, 46, 0.03);
  border-color: var(--line-dark);
}

.theme-item h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.theme-item p {
  margin: 0;
  font-size: 14px;
}

/* 翻目录卡点 */
.block-list {
  margin: 16px 0;
}

/* 延伸路径 */
.next-link-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.next-link-list li a {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.next-link-list li a:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* 内容配图 */
.content-figure {
  margin: 28px 0;
}

.content-figure img {
  max-height: 320px;
  width: 100%;
  object-fit: cover;
}

/* =========================================================
   pages / schedule 档期批次
   ========================================================= */
.method-block {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.method-copy h2 {
  font-size: 24px;
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.method-copy p {
  font-size: 15px;
  color: var(--ink-soft);
}

.method-note {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  padding: 20px;
}

.method-note h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.method-note p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.method-note a {
  font-size: 14px;
  font-weight: 600;
}

/* 批次时间线 */
.timeline-section {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.timeline-section h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.section-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.timeline-list {
  position: relative;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 180px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--line-dark);
}

.timeline-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  margin-bottom: 24px;
  position: relative;
}

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

.timeline-mark {
  text-align: right;
  padding-right: 20px;
  position: relative;
}

.timeline-mark::after {
  content: "";
  position: absolute;
  right: -5px;
  top: 20px;
  width: 12px;
  height: 12px;
  background-color: var(--red);
  border-radius: 50%;
  border: 2px solid var(--paper);
}

.batch-id {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--red);
  display: block;
  margin-bottom: 8px;
}

.batch-cover {
  display: inline-block;
}

.batch-cover img {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.timeline-content {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.timeline-content h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.timeline-content a {
  font-size: 14px;
  font-weight: 600;
}

/* 当前批次 */
.current-batch {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.batch-header {
  margin-bottom: 20px;
}

.batch-header h2 {
  font-size: 24px;
  margin-bottom: 6px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.batch-header p {
  font-size: 15px;
  color: var(--ink-soft);
}

.batch-directions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.direction-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  border-top: 3px solid var(--teal);
}

.direction-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.direction-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* 继续阅读 */
.next-read {
  max-width: var(--container);
  margin: 0 auto 20px;
  padding: 0 24px;
}

.next-read h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.next-read p {
  font-size: 15px;
  color: var(--ink-soft);
}

.next-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.next-links li a {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.next-links li a:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* 页内相关导航 */
.page-related-nav {
  max-width: var(--container);
  margin: 32px auto 0;
  padding: 20px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.page-related-nav p {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.page-related-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.page-related-nav li a {
  font-size: 14px;
}

/* =========================================================
   pages / notes 题材笔记
   ========================================================= */
.notes-intro {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.intro-copy h2 {
  font-size: 24px;
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.intro-copy p {
  font-size: 15px;
  color: var(--ink-soft);
}

.intro-media img {
  max-height: 260px;
  width: 100%;
  object-fit: cover;
}

/* 章节标题带索引 */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.section-index {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--red);
  font-weight: 600;
  flex-shrink: 0;
}

.section-heading .section-title {
  margin-bottom: 0;
  font-size: 24px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

/* 判据列表 */
.criteria-section,
.cross-channel-section,
.edge-section,
.related-section {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

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

.criteria-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
}

.criteria-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.criteria-item p:last-child {
  margin-bottom: 0;
}

/* 跨频道记录 */
.cross-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.cross-list {
  margin-bottom: 8px;
}

/* 边界情况 */
.edge-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.edge-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
  border-left: 3px solid var(--teal);
}

.edge-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.edge-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* 关联链接 */
.related-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

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

.related-link {
  display: block;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-link:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* 页面底部相关链接 */
.page-notes .related-links {
  margin-top: 0;
}

/* =========================================================
   pages / topics 专题文章
   ========================================================= */
.topics-intro {
  max-width: var(--container);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.topics-intro h2 {
  font-size: 24px;
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.topics-intro p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
}

.content-media-inline {
  margin: 16px 0;
}

/* 专题列表 */
.topics-list-section {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.topics-list-section h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.section-desc {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.topics-list {
  border-top: 2px solid var(--ink);
}

.topic-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  padding: 22px 8px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.2s ease;
}

.topic-item:hover {
  background-color: rgba(255, 255, 255, 0.6);
}

.topic-index {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--red);
  font-weight: 600;
  padding-top: 4px;
}

.topic-body h3 {
  font-size: 20px;
  margin-bottom: 6px;
}

.topic-body p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.topic-meta {
  font-size: 13px !important;
  color: var(--ink-mute) !important;
}

.topic-readtime {
  font-size: 13px !important;
  color: var(--teal) !important;
  font-weight: 600;
}

/* 阅读顺序 */
.reading-order {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.reading-order h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.reading-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.reading-step {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  position: relative;
}

.reading-step::after {
  content: "→";
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--red);
  font-size: 16px;
  z-index: 1;
}

.reading-step:last-child::after {
  content: "";
}

.step-num {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--red);
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.reading-step p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

.reading-tip {
  font-size: 14px;
  color: var(--ink-mute);
  background-color: rgba(47, 93, 87, 0.06);
  padding: 12px 16px;
  border-radius: var(--radius);
  border-left: 3px solid var(--teal);
}

/* 关联卡片 */
.topics-related {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.topics-related h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.topics-related > p {
  font-size: 15px;
  color: var(--ink-soft);
}

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

.relation-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.relation-card h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.relation-card p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  flex-grow: 1;
}

.relation-card a {
  font-size: 14px;
  font-weight: 600;
}

/* 延伸入口 */
.topics-extend {
  max-width: var(--container);
  margin: 0 auto 20px;
  padding: 0 24px;
}

.topics-extend h2 {
  font-size: 24px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.topics-extend p {
  font-size: 15px;
  color: var(--ink-soft);
}

.extend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.extend-links a {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.extend-links a:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* =========================================================
   pages / guide 观看指南
   ========================================================= */

/* 指南导语 */
.guide-lead {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.guide-lead-text h2 {
  font-size: 24px;
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.guide-lead-text p {
  font-size: 15px;
  color: var(--ink-soft);
}

.guide-lead-figure img {
  max-height: 240px;
  width: 100%;
  object-fit: cover;
}

/* 步骤模块 */
.guide-step {
  max-width: var(--container);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.step-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--red);
}

.step-number {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
  background-color: rgba(163, 59, 46, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.step-heading .section-title {
  margin-bottom: 0;
  font-size: 24px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.step-action,
.step-result,
.step-exception {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.step-action {
  border-top: 3px solid var(--teal);
}

.step-result {
  border-top: 3px solid var(--teal-light);
}

.step-exception {
  border-top: 3px solid var(--red);
}

.step-action h3,
.step-result h3,
.step-exception h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.step-action p,
.step-result p,
.step-exception p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* 指南汇总 */
.guide-summary {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.guide-summary h2 {
  font-size: 24px;
  margin-bottom: 16px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.summary-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  border-left: 3px solid var(--red);
}

.summary-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.summary-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* 指南底部导航 */
.guide-related {
  max-width: var(--container);
  margin: 32px auto 0;
  padding: 20px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.guide-related p {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.guide-related ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.guide-related li a {
  font-size: 14px;
}

/* =========================================================
   pages / faq 常见问题
   ========================================================= */
.faq-topic-side {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.aside-title {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--red);
}

.topic-list {
  list-style: none;
  margin-bottom: 16px;
}

.topic-list li {
  margin-bottom: 2px;
}

.topic-list a {
  display: block;
  padding: 7px 10px;
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease;
}

.topic-list a:hover {
  color: var(--red);
  background-color: rgba(163, 59, 46, 0.06);
  border-left-color: var(--red);
  text-decoration: none;
}

.aside-note {
  background-color: rgba(47, 93, 87, 0.06);
  border-radius: var(--radius);
  padding: 14px;
}

.aside-note p {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.aside-note a {
  font-size: 13px;
  font-weight: 600;
}

/* FAQ 分组 */
.faq-panel {
  min-width: 0;
}

.faq-group {
  margin-bottom: 36px;
}

.faq-group-title {
  font-size: 22px;
  margin-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-left: 12px;
  border-left: 4px solid var(--teal);
}

.faq-group-desc {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

/* 延伸阅读 */
.faq-related {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.faq-related-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.faq-related > p {
  font-size: 15px;
  color: var(--ink-soft);
}

.faq-related-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.faq-related-list li a {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.faq-related-list li a:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* =========================================================
   pages / policy 收录边界
   ========================================================= */
.section-body p {
  font-size: 15px;
  color: var(--ink-soft);
}

.section-figure {
  margin: 20px 0;
}

.section-figure img {
  max-height: 280px;
  width: 100%;
  object-fit: cover;
}

.section-lead {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

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

.policy-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.policy-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.policy-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
  flex-grow: 1;
}

.policy-item a {
  font-size: 14px;
  font-weight: 600;
}

/* 缺口处理 */
.gap-route-list {
  margin: 16px 0;
}

.gap-route-list p {
  font-size: 15px;
  color: var(--ink-soft);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.gap-route-list p:last-child {
  border-bottom: none;
}

.gap-route-list strong {
  color: var(--ink);
  font-weight: 600;
}

.gap-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.gap-links a {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.gap-links a:hover {
  border-color: var(--red);
  color: var(--red);
  text-decoration: none;
}

/* =========================================================
   pages / 404 页面
   ========================================================= */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-panel {
  text-align: center;
  max-width: 520px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow-sm);
}

.error-code {
  font-family: var(--mono);
  font-size: 64px;
  font-weight: 700;
  color: var(--red);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.error-advice {
  font-size: 14px;
  color: var(--ink-mute);
  margin-bottom: 24px;
}

.error-home-link {
  display: inline-block;
  padding: 10px 32px;
  background-color: var(--red);
  color: var(--white);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.error-home-link:hover {
  background-color: var(--red-dark);
  color: var(--white);
  text-decoration: none;
}

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

/* 小屏桌面：960px 以下 */
@media (max-width: 960px) {
  .header-inner {
    padding: 0 16px;
  }

  .brand-tag {
    display: none;
  }

  .nav-list {
    gap: 0;
  }

  .nav-list a {
    padding: 8px 8px;
    font-size: 14px;
  }

  .inner-container {
    padding: 0 16px;
  }

  /* 首页首屏 */
  .hero-copy {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
  }

  .hero-copy h1 {
    grid-column: 1;
    font-size: 30px;
  }

  .hero-lead,
  .hero-note {
    grid-column: 1;
  }

  .hero-media {
    grid-column: 1;
    grid-row: auto;
  }

  .entry-compare {
    padding: 0 16px;
    grid-template-columns: 1fr;
  }

  .numbered-guide,
  .batch-summary,
  .compare-table-block,
  .dual-direction,
  .selfcheck-four,
  .faq-preview,
  .boundary-strip {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .batch-summary {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .dual-direction {
    grid-template-columns: 1fr;
  }

  .step-four-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* 侧栏布局改单列 */
  .page-layout,
  .layout-shell,
  .sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sidebar-left .page-aside,
  .sidebar-left .page-content,
  .sidebar-left .faq-topic-side,
  .sidebar-left .faq-panel {
    grid-column: 1;
    grid-row: auto;
  }

  .page-aside,
  .faq-topic-side {
    position: static;
    order: 2;
  }

  .sidebar-left .page-aside,
  .sidebar-left .faq-topic-side {
    order: 2;
  }

  .sidebar-left .page-content,
  .sidebar-left .faq-panel {
    order: 1;
  }

  /* 双栏正文模块改单列 */
  .method-block,
  .notes-intro,
  .guide-lead {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .timeline-list::before {
    left: 0;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-left: 20px;
  }

  .timeline-mark {
    text-align: left;
    padding-right: 0;
  }

  .timeline-mark::after {
    right: auto;
    left: -5px;
    top: 8px;
  }

  .batch-cover {
    display: none;
  }

  .batch-directions {
    grid-template-columns: 1fr 1fr;
  }

  .criteria-list,
  .policy-list {
    grid-template-columns: 1fr;
  }

  .edge-list,
  .relation-cards,
  .summary-list {
    grid-template-columns: 1fr 1fr;
  }

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

  .step-body {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

/* 手机：640px 以下 */
@media (max-width: 640px) {
  .header-inner {
    height: auto;
    min-height: var(--header-h);
    flex-wrap: wrap;
    padding: 8px 16px;
    gap: 8px;
  }

  /* 汉堡按钮显示 */
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  /* 导航列表默认收起 */
  .site-nav {
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 0;
    gap: 2px;
  }

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

  .nav-list a {
    padding: 12px 14px;
    font-size: 15px;
    border-radius: var(--radius);
  }

  .nav-list a.is-current {
    background-color: transparent;
    border-color: transparent;
    color: var(--white);
    border-left: 3px solid var(--red);
    border-radius: 0;
    background-color: rgba(163, 59, 46, 0.2);
  }

  .site-main.inner-main {
    padding-top: 24px;
  }

  .inner-container {
    padding: 0 16px;
  }

  /* 页面标题 */
  .page-title {
    font-size: 24px;
  }

  .page-description {
    font-size: 15px;
  }

  .page-header {
    margin-bottom: 24px;
  }

  /* 首页 */
  .hero-compare {
    padding-top: 32px;
  }

  .hero-copy {
    padding: 0 16px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

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

  .entry-compare {
    margin-top: 32px;
  }

  .content-media-primary {
    margin-top: 24px;
    padding: 0 16px;
  }

  .content-media-primary img {
    max-height: 220px;
  }

  .numbered-guide,
  .batch-summary,
  .compare-table-block,
  .dual-direction,
  .selfcheck-four,
  .faq-preview,
  .boundary-strip {
    padding-left: 16px;
    padding-right: 16px;
    padding-top: 40px;
  }

  .section-head h2 {
    font-size: 22px;
  }

  .step-four-grid {
    grid-template-columns: 1fr;
  }

  .batch-archive {
    margin-top: 8px;
  }

  .archive-row {
    grid-template-columns: 48px 1fr;
    gap: 10px;
    padding: 12px 14px;
  }

  .archive-row a {
    grid-column: 2;
  }

  .compare-table {
    min-width: 560px;
  }

  .compare-wrap {
    margin: 0 -16px;
    padding: 0 16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  /* 批次时间线 */
  .method-block,
  .timeline-section,
  .current-batch,
  .next-read,
  .notes-intro,
  .criteria-section,
  .cross-channel-section,
  .edge-section,
  .related-section,
  .topics-intro,
  .topics-list-section,
  .reading-order,
  .topics-related,
  .topics-extend,
  .guide-lead,
  .guide-step,
  .guide-summary {
    padding-left: 16px;
    padding-right: 16px;
    margin-bottom: 32px;
  }

  .batch-directions {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    padding-left: 16px;
  }

  .timeline-content {
    padding: 14px 16px;
  }

  /* 专题 */
  .topic-item {
    grid-template-columns: 48px 1fr;
    gap: 12px;
    padding: 16px 4px;
  }

  .topic-index {
    font-size: 16px;
  }

  .topic-body h3 {
    font-size: 17px;
  }

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

  .reading-step::after {
    content: "↓";
    right: auto;
    left: 50%;
    top: auto;
    bottom: -18px;
    transform: translateX(-50%);
  }

  .reading-step {
    margin-bottom: 20px;
  }

  .reading-step:last-child {
    margin-bottom: 0;
  }

  .reading-step:last-child::after {
    content: "";
  }

  .edge-list,
  .relation-cards,
  .summary-list {
    grid-template-columns: 1fr;
  }

  /* 指南步骤 */
  .step-body {
    grid-template-columns: 1fr;
  }

  .step-heading {
    align-items: flex-start;
  }

  /* FAQ */
  .faq-panel {
    margin-top: 8px;
  }

  .faq-group-title {
    font-size: 20px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    padding: 16px;
  }

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

  .related-links {
    padding: 16px;
    margin-top: 24px;
  }

  .related-links-item {
    padding: 8px 12px;
    font-size: 13px;
  }

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 48px;
  }
}

/* 极窄屏：400px 以下 */
@media (max-width: 400px) {
  .brand-name {
    font-size: 19px;
  }

  .hero-copy h1 {
    font-size: 22px;
  }

  .entry-card {
    padding: 18px;
  }

  .step-card {
    padding: 18px;
  }

  .criteria-item,
  .policy-item,
  .edge-item,
  .summary-item {
    padding: 16px;
  }

  .archive-row {
    grid-template-columns: 40px 1fr;
  }
}