/* ==========================================================================
   糖心 · 整站样式表
   视觉方向：地产信息风 —— 暖白底、深灰墨色、铜绿细线、档案手册气质
   ========================================================================== */

/* ==========================================================================
   01 · base —— 重置、变量、字体、基础元素
   ========================================================================== */

:root {
  --color-ink: #1a1a1a;
  --color-bg: #fbf8f3;
  --color-copper: #c5a47a;
  --color-green: #2e4a3d;
  --color-line: #e8e2d8;
  --color-footer: #222222;
  --color-white: #ffffff;
  --color-text-soft: #5c5c5c;
  --color-text-muted: #7a7a7a;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --header-height: 60px;
  --container-max: 1140px;
  --content-max: 780px;
  --radius: 8px;
  --radius-sm: 4px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-xxl: 64px;

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

*,
*::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: 16px;
  line-height: 1.75;
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-green);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
}

p {
  text-align: justify;
}

/* 焦点可见性 */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-copper);
  outline-offset: 2px;
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   02 · layout —— 全局布局骨架：页头、页脚、主容器、面包屑、页面标题
   ========================================================================== */

/* ---- 站点页头 ---- */

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

.header-inner {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

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

/* 导航按钮（移动端） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* 导航打开时的汉堡动画 */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 全站导航 */
.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li {
  list-style: none;
}

.nav-list a {
  display: block;
  padding: 6px 14px;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-ink);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--color-green);
  border-bottom-color: var(--color-copper);
}

.nav-list a.is-current {
  color: var(--color-green);
  border-bottom-color: var(--color-copper);
  font-weight: 600;
}

/* ---- 站点主内容 ---- */

.site-main {
  display: block;
}

/* 内页统一容器 */
.inner-main {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- 面包屑 ---- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

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

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

/* ---- 页面标题区 ---- */

.page-header {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.page-description {
  max-width: var(--content-max);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-soft);
}

/* ---- 页脚 ---- */

.site-footer {
  background-color: var(--color-footer);
  color: #c9c9c9;
  margin-top: 80px;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-col {
  min-width: 0;
}

.footer-brand {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.footer-heading {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
  line-height: 1.4;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #a5a5a5;
  text-align: left;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links li {
  list-style: none;
}

.footer-links a {
  font-size: 14px;
  color: #a5a5a5;
  transition: color var(--transition-fast);
  line-height: 1.5;
}

.footer-links a:hover {
  color: var(--color-copper);
}

.footer-copyright {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 20px 24px 28px;
  border-top: 1px solid #3a3a3a;
  font-size: 13px;
  color: #8a8a8a;
  text-align: center;
}

/* ---- 通用区块标题 ---- */

.section-title {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-copper);
  display: inline-block;
}

.section-intro {
  color: var(--color-text-soft);
  margin-bottom: 24px;
  max-width: var(--content-max);
}

/* ---- 通用文本链接 ---- */

.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-green);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.5;
}

.text-link:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* ---- 通用侧栏标题 ---- */

.aside-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-copper);
}

/* ---- 内容图片容器 ---- */

.content-media {
  margin: 32px 0;
}

.content-media img,
.content-media-primary img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.content-media figcaption,
.content-media-primary figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.5;
}

/* ---- 相关链接 ---- */

.related-links {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 40px 24px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-right: 4px;
}

.related-links-item {
  display: inline-block;
  padding: 6px 14px;
  font-size: 14px;
  color: var(--color-green);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.5;
}

.related-links-item:hover {
  background-color: #f5f1ea;
  border-color: var(--color-copper);
}

/* ==========================================================================
   03 · components —— 通用组件：卡片、折叠、按钮、步骤、列表等
   ========================================================================== */

/* ---- 按钮（404 页） ---- */

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 32px;
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  line-height: 1.4;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
}

.btn-primary {
  background-color: var(--color-green);
  color: var(--color-white);
  border: 1px solid var(--color-green);
}

.btn-primary:hover {
  background-color: #3d5f50;
  color: var(--color-white);
}

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

.btn-secondary:hover {
  background-color: var(--color-green);
  color: var(--color-white);
}

/* ---- FAQ 折叠 ---- */

.faq-list {
  margin-bottom: 48px;
}

.faq-group-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-copper);
  margin-bottom: 20px;
}

.faq-item {
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 0;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  line-height: 1.5;
  transition: color var(--transition-fast);
  min-height: 48px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-copper);
  flex-shrink: 0;
  line-height: 1;
  transition: transform var(--transition-fast);
}

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

.faq-item summary:hover {
  color: var(--color-green);
}

.faq-answer {
  padding: 0 4px 20px;
  max-width: 720px;
}

.faq-answer p {
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 8px;
}

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

.faq-answer a {
  color: var(--color-green);
  border-bottom: 1px solid var(--color-line);
}

.faq-answer a:hover {
  border-bottom-color: var(--color-copper);
}

/* ---- 步骤条目（首页） ---- */

.step-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.step-item:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 26, 0.06);
  transform: translateY(-2px);
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-copper);
  background-color: #f5f1ea;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 14px;
}

.step-item a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-green);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.step-item a:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* ---- 批次条目（首页窄带） ---- */

.batch-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition-fast);
}

.batch-item:hover {
  border-color: var(--color-copper);
}

.batch-label {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-green);
  background-color: #eef3f0;
  border-radius: 20px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.batch-text {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}

/* ---- 片单卡片（首页精选） ---- */

.highlight-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.highlight-card:hover {
  box-shadow: 0 6px 20px rgba(26, 26, 26, 0.07);
  transform: translateY(-2px);
}

.card-topline {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-copper);
  font-family: Helvetica, Arial, sans-serif;
  letter-spacing: 0.03em;
}

.card-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
}

.card-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.card-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-green);
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.card-link:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* ---- 文本链接（图谱页） ---- */

.dimension-card .text-link,
.archive-group .text-link,
.archive-topic .text-link {
  margin-top: 8px;
}

/* ---- 提醒窄带（首页底部） ---- */

.plan-note {
  background-color: #f5f1ea;
  border-left: 3px solid var(--color-copper);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 48px;
}

.plan-text {
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.6;
  flex: 1;
  min-width: 240px;
}

.plan-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-white);
  background-color: var(--color-green);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  line-height: 1.5;
  min-height: 40px;
}

.plan-link:hover {
  background-color: #3d5f50;
  color: var(--color-white);
}

/* ---- 状态点（时间线页） ---- */

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-line);
  flex-shrink: 0;
}

.status-dot.current {
  background-color: var(--color-copper);
}

/* ==========================================================================
   04 · pages —— 各页面专属模块样式
   ========================================================================== */

/* ========== 首页 index.html ========== */

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

/* 首页双栏：左侧索引 + 右侧主内容 */
.home-frame.sidebar-left {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
  padding-top: 40px;
}

/* 左侧索引 */
.home-index {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.index-heading {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.index-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.index-list li {
  list-style: none;
}

.index-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--color-text-soft);
  border-left: 3px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  line-height: 1.4;
}

.index-list a:hover {
  color: var(--color-green);
  border-left-color: var(--color-copper);
  background-color: #faf7f2;
}

/* 首页主内容 */
.home-main {
  min-width: 0;
}

/* Hero 区 */
.hero {
  margin-bottom: 48px;
}

.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #e8e2d8;
  min-height: 360px;
}

.hero-media img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.hero-caption {
  padding: 24px 0 0;
}

.hero-caption h1 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 16px;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-link {
  display: inline-block;
  padding: 8px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-white);
  background-color: var(--color-green);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  line-height: 1.5;
  min-height: 44px;
}

.hero-link:hover {
  background-color: #3d5f50;
  color: var(--color-white);
}

/* 批次窄带 */
.batch-rail {
  margin-bottom: 48px;
}

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

/* 片单精选 */
.collection-highlight {
  margin-bottom: 48px;
}

.highlight-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

/* 错缝：第二张卡下移 */
.highlight-cards article:nth-child(2) {
  margin-top: 32px;
}

/* 观看步骤 */
.entry-steps {
  margin-bottom: 48px;
}

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

/* 首页正文中的内容图片 */
.hero + .content-media-primary {
  margin-top: 0;
}

/* ========== 内页公共布局 ========== */

/* 内页页面主体（含面包屑与标题） */
.inner-main {
  padding-top: 0;
}

/* ========== 内容图谱 map.html ========== */

.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}

.map-content {
  min-width: 0;
}

/* 左侧说明 */
.map-note {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  min-width: 0;
}

.map-note p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.map-note .text-link {
  margin-top: 4px;
}

/* 维度列表 */
.dimension-list {
  margin-bottom: 48px;
}

.dimension-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
}

.dimension-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.dimension-card > p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.tag-list li {
  list-style: none;
  font-size: 13px;
  color: var(--color-green);
  background-color: #eef3f0;
  padding: 4px 12px;
  border-radius: 20px;
  line-height: 1.5;
}

/* 标签索引 */
.tag-index {
  margin-bottom: 48px;
}

.tag-index-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.tag-index-list li {
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 8px;
  border-bottom: 1px solid var(--color-line);
  transition: background-color var(--transition-fast);
}

.tag-index-list li:hover {
  background-color: #faf7f2;
}

.tag-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  min-width: 100px;
  flex-shrink: 0;
}

.tag-context {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 图谱插图 */
.map-figure {
  margin: 32px 0;
}

.map-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.map-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* 使用说明 */
.how-to-use {
  border-top: 1px solid var(--color-line);
  padding-top: 40px;
}

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

.use-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.use-step p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}

.howto-link {
  margin-top: 24px;
  font-size: 15px;
}

.howto-link a {
  color: var(--color-green);
  border-bottom: 1px solid var(--color-line);
  margin: 0 8px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.howto-link a:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* ========== 动态记录 timeline.html ========== */

.timeline-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  align-items: start;
}

.batch-rail {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.batch-index-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.batch-index-item {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.batch-index-item a {
  display: block;
  padding: 8px 4px;
  font-size: 14px;
  color: var(--color-text-soft);
  transition: color var(--transition-fast);
  line-height: 1.4;
  flex: 1;
}

.batch-index-item a:hover {
  color: var(--color-green);
}

.timeline-main {
  min-width: 0;
}

.timeline-main .section-title {
  margin-top: 0;
}

/* 当前批次 */
.batch-current {
  margin-bottom: 56px;
}

.current-batch-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.entry-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  line-height: 1.4;
}

.entry-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* 上一批 */
.batch-previous {
  margin-bottom: 56px;
}

.previous-batch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

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

.timeline-figure {
  margin: 24px 0;
}

.timeline-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.timeline-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* 历史归档 */
.batch-archive {
  margin-bottom: 48px;
}

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

.archive-topic {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.archive-topic .entry-title {
  font-size: 15px;
}

.topic-list {
  list-style: none;
  margin: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.topic-list li {
  list-style: none;
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.5;
  padding-left: 12px;
  position: relative;
}

.topic-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-copper);
}

/* ========== 专题片单 collections.html ========== */

.collection-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-bottom: 48px;
}

.collection-item-1,
.collection-item-2,
.collection-item-3 {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  align-items: start;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.collection-media {
  min-width: 0;
}

.collection-figure {
  margin: 0;
}

.collection-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}

.collection-content {
  min-width: 0;
}

.collection-number {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-copper);
  font-family: Helvetica, Arial, sans-serif;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.collection-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
  line-height: 1.3;
}

.collection-desc {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 16px;
}

.collection-order-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.collection-order-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.collection-order-list li {
  list-style: none;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.collection-order-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--color-copper);
  border-radius: 50%;
}

.collection-apply {
  font-size: 14px;
  color: var(--color-green);
  line-height: 1.6;
  margin: 0;
}

/* 片单阅读说明 */
.read-order-note {
  border-top: 1px solid var(--color-line);
  padding-top: 40px;
  max-width: var(--content-max);
}

.note-paragraph {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 16px;
}

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

/* ========== 筹备预告 upcoming.html ========== */

.plan-card-list {
  margin-bottom: 48px;
}

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

.plan-card-1,
.plan-card-2,
.plan-card-3 {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.plan-card-1:hover,
.plan-card-2:hover,
.plan-card-3:hover {
  box-shadow: 0 4px 16px rgba(26, 26, 26, 0.06);
  transform: translateY(-2px);
}

.plan-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.plan-card-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
}

.plan-status {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-green);
  background-color: #eef3f0;
  border-radius: 20px;
  line-height: 1.4;
  white-space: nowrap;
}

.plan-card-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}

.plan-card-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-green);
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.plan-card-link:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* 优先级说明 */
.priority-note {
  margin-bottom: 48px;
}

.priority-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: var(--content-max);
}

.priority-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}

.priority-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-copper);
  background-color: #f5f1ea;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
}

/* 筹备图 */
.plan-figure {
  margin: 32px 0;
}

.plan-figure img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
}

.plan-caption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* 反馈路径 */
.feedback-route {
  border-top: 1px solid var(--color-line);
  padding-top: 40px;
}

.feedback-desc {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: var(--content-max);
}

.feedback-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.feedback-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-green);
  border: 1px solid var(--color-green);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  line-height: 1.5;
  min-height: 44px;
}

.feedback-link:hover {
  background-color: var(--color-green);
  color: var(--color-white);
}

/* ========== 观看指南 guide.html ========== */

.guide-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  align-items: start;
}

.guide-nav {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.guide-nav-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.guide-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.guide-nav-list li {
  list-style: none;
}

.guide-nav-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--color-text-soft);
  border-left: 3px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  line-height: 1.4;
}

.guide-nav-list a:hover {
  color: var(--color-green);
  border-left-color: var(--color-copper);
  background-color: #faf7f2;
}

.guide-nav-note {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-line);
}

.guide-nav-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-green);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.guide-nav-link:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

.guide-body {
  min-width: 0;
}

.step-content {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.guide-step {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 32px;
}

.step-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-green);
  border-radius: 50%;
  flex-shrink: 0;
  font-family: Helvetica, Arial, sans-serif;
}

.step-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0;
  line-height: 1.3;
}

.step-desc {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 16px;
}

.step-points {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-points li {
  list-style: none;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.step-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--color-copper);
  border-radius: 50%;
}

.step-result {
  font-size: 14px;
  color: var(--color-green);
  line-height: 1.6;
  margin-bottom: 12px;
  padding: 12px 16px;
  background-color: #eef3f0;
  border-radius: var(--radius-sm);
}

.step-warning {
  font-size: 13px;
  color: #9a6a3a;
  line-height: 1.6;
  margin: 0;
  padding: 10px 16px;
  background-color: #faf3e8;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-copper);
}

.step-note {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
  padding: 12px 16px;
  background-color: #f8f6f2;
  border-radius: var(--radius-sm);
}

/* 核对清单 */
.final-checklist {
  margin: 16px 0;
  background-color: #f8f6f2;
  border-radius: var(--radius-sm);
  padding: 20px;
}

.checklist-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.checklist-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checklist-items li {
  list-style: none;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
  padding-left: 28px;
  position: relative;
}

.checklist-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-copper);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
}

/* 指南配图 */
.guide-figure {
  margin: 24px 0 0;
}

.guide-figure img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--radius);
}

.guide-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* 指南页底部链接 */
.guide-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

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

.guide-links a {
  color: var(--color-green);
  border-bottom: 1px solid var(--color-line);
  margin: 0 8px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.guide-links a:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* ========== 常见问题 faq.html ========== */

.faq-wrap.sidebar-left {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  align-items: start;
}

.faq-topics {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.faq-side-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.faq-topic-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.faq-topic-list li {
  list-style: none;
}

.faq-topic-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--color-text-soft);
  border-left: 3px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  line-height: 1.4;
}

.faq-topic-list a:hover {
  color: var(--color-green);
  border-left-color: var(--color-copper);
  background-color: #faf7f2;
}

.faq-content {
  min-width: 0;
}

/* 反馈说明 */
.feedback-note {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin: 24px 0;
  padding: 16px 20px;
  background-color: var(--color-white);
  border-left: 3px solid var(--color-copper);
  border-radius: var(--radius-sm);
}

.feedback-note a {
  color: var(--color-green);
  border-bottom: 1px solid var(--color-line);
  margin: 0 4px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.feedback-note a:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

/* FAQ 配图 */
.faq-figure {
  margin: 32px 0;
}

.faq-figure img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
}

.faq-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* ========== 收录说明 scope.html ========== */

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

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

.scope-section h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-copper);
  display: inline-block;
}

.section-note {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: var(--content-max);
}

.scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: var(--content-max);
}

.scope-list li {
  list-style: none;
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.7;
  padding: 14px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  counter-increment: scope-counter;
  position: relative;
  padding-left: 52px;
}

.scope-list {
  counter-reset: scope-counter;
}

.scope-list li::before {
  content: counter(scope-counter, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-copper);
  font-family: Helvetica, Arial, sans-serif;
}

/* 不收录列表 */
.exclude-list li {
  padding-left: 44px;
}

.exclude-list li::before {
  content: "×";
  font-size: 18px;
  color: #b5654a;
  left: 16px;
  top: 12px;
}

/* 编辑原则 */
.principle-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  max-width: var(--content-max);
}

.principle-block h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.principle-block p {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}

/* 收录页配图 */
.scope-figure {
  margin: 32px 0;
}

.scope-figure img {
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius);
}

.scope-figure figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
}

/* 反馈引导 */
.scope-feedback {
  border-top: 1px solid var(--color-line);
  padding-top: 40px;
}

.scope-feedback > p {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: var(--content-max);
}

/* ========== 404 页面 ========== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height) - 300px);
  padding: 60px 24px;
}

.error-panel {
  max-width: 560px;
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 48px 40px;
}

.error-code {
  font-size: 72px;
  font-weight: 600;
  color: var(--color-copper);
  line-height: 1;
  margin-bottom: 16px;
  font-family: Helvetica, Arial, sans-serif;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.75;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.error-help {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0;
}

.error-help a {
  color: var(--color-green);
  border-bottom: 1px solid var(--color-line);
  margin: 0 4px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.error-help a:hover {
  color: var(--color-copper);
  border-bottom-color: var(--color-copper);
}

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

/* ---- 平板及以下（导航切换） ---- */

@media (max-width: 1024px) {
  .home-frame.sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 220px 1fr;
    gap: 24px;
  }

  .timeline-layout,
  .guide-layout,
  .faq-wrap.sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .collection-item-1,
  .collection-item-2,
  .collection-item-3 {
    grid-template-columns: 300px 1fr;
    gap: 24px;
  }

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

  .plan-card-1,
  .plan-card-2,
  .plan-card-3 {
    padding: 20px;
  }

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

  .footer-inner {
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 24px;
  }
}

/* ---- 768px 断点：移动端 ---- */

@media (max-width: 768px) {
  /* 页头 */
  .header-inner {
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    padding: 12px 8px;
    border-bottom: none;
    border-left: 3px solid transparent;
    white-space: normal;
  }

  .nav-list a:hover,
  .nav-list a.is-current {
    border-bottom: none;
    border-left-color: var(--color-copper);
  }

  /* 面包屑 */
  .breadcrumb {
    padding-top: 16px;
  }

  /* 页面标题 */
  .page-header {
    padding: 16px 0 24px;
    margin-bottom: 24px;
  }

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

  /* 内页容器 */
  .inner-main {
    padding: 0 16px;
  }

  /* 首页 */
  .home-frame {
    padding: 0 16px;
  }

  .home-frame.sidebar-left {
    display: block;
    padding-top: 0;
  }

  .home-index {
    display: none;
  }

  .home-main {
    padding-top: 24px;
  }

  .hero-media img {
    height: 260px;
  }

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

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

  .highlight-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .highlight-cards article:nth-child(2) {
    margin-top: 0;
  }

  .steps-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .plan-note {
    padding: 16px;
  }

  /* 图谱页 */
  .page-layout.sidebar-left {
    display: block;
  }

  .map-note {
    display: none;
  }

  .map-content {
    padding-top: 0;
  }

  .dimension-card {
    padding: 20px;
  }

  .how-to-use {
    padding-top: 24px;
  }

  .use-step {
    margin-bottom: 12px;
  }

  /* 时间线页 */
  .timeline-layout {
    display: block;
    padding: 0 16px;
  }

  .batch-rail {
    display: none;
  }

  .timeline-main {
    padding-top: 0;
  }

  .current-batch-content {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .previous-batch-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .archive-topics {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 片单页 */
  .collection-item-1,
  .collection-item-2,
  .collection-item-3 {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

  .collection-figure img {
    aspect-ratio: 16 / 9;
  }

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

  /* 筹备页 */
  .plan-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .priority-item {
    flex-direction: column;
    gap: 12px;
  }

  .priority-num {
    margin-top: 0;
  }

  /* 指南页 */
  .guide-layout {
    display: block;
    padding: 0 16px;
  }

  .guide-nav {
    display: none;
  }

  .guide-body {
    padding-top: 0;
  }

  .guide-step {
    padding: 24px 20px;
  }

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

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

  /* FAQ 页 */
  .faq-wrap.sidebar-left {
    display: block;
    padding: 0 16px;
  }

  .faq-topics {
    display: none;
  }

  .faq-content {
    padding-top: 0;
  }

  .faq-item summary {
    font-size: 15px;
  }

  /* 收录页 */
  .scope-main {
    padding: 0 16px;
  }

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

  .scope-list li {
    padding-left: 44px;
  }

  .scope-list li::before {
    left: 12px;
  }

  .exclude-list li {
    padding-left: 40px;
  }

  .exclude-list li::before {
    left: 12px;
  }

  /* 404 */
  .error-main {
    min-height: auto;
    padding: 40px 16px;
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 56px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 16px 24px;
  }

  .footer-copyright {
    padding: 16px;
  }

  /* 相关链接 */
  .related-links {
    padding: 24px 16px 0;
  }
}

/* ---- 390px 及更窄 ---- */

@media (max-width: 390px) {
  .header-inner {
    padding: 0 12px;
    gap: 12px;
  }

  .brand-name {
    font-size: 20px;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .home-frame,
  .inner-main,
  .timeline-layout,
  .guide-layout,
  .faq-wrap.sidebar-left,
  .scope-main {
    padding-left: 12px;
    padding-right: 12px;
  }

  .hero-media img {
    height: 220px;
  }

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

  .hero-caption {
    padding-top: 16px;
  }

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

  .hero-link {
    text-align: center;
  }

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

  .batch-item,
  .highlight-card,
  .step-item,
  .dimension-card,
  .archive-group,
  .archive-topic,
  .batch-entry,
  .plan-card-1,
  .plan-card-2,
  .plan-card-3,
  .guide-step,
  .principle-block {
    padding: 16px;
  }

  .collection-item-1,
  .collection-item-2,
  .collection-item-3 {
    padding: 16px;
  }

  .collection-title {
    font-size: 18px;
  }

  .footer-inner {
    padding-left: 12px;
    padding-right: 12px;
  }

  .related-links {
    padding-left: 12px;
    padding-right: 12px;
    gap: 8px;
  }

  .related-links-item {
    padding: 6px 10px;
    font-size: 13px;
  }

  .faq-item summary {
    padding: 14px 0;
  }

  .faq-answer {
    padding-bottom: 16px;
  }

  .step-head {
    flex-direction: column;
    gap: 8px;
  }

  .step-number {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }

  .guide-links p a {
    display: inline-block;
    margin: 4px 0;
  }

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

  .scope-list li {
    font-size: 14px;
    padding: 12px 12px 12px 40px;
  }

  .scope-list li::before {
    left: 10px;
    top: 12px;
  }

  .exclude-list li {
    padding-left: 36px;
  }
}