/* ==========================================================================
   禁漫岛 · 整站样式表
   工艺品牌风：暖纸色画布、深墨色版式、朱砂红强调色
   ========================================================================== */

/* ==========================================================================
   Base
   ========================================================================== */

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

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: #2E2A24;
  background-color: #F6F1E5;
}

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

a {
  color: #A6402B;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 0.6em;
  color: #2E2A24;
}

p {
  margin: 0 0 1em;
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
}

figure {
  margin: 0;
}

/* 辅助隐藏 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 通用标签 */
.tag {
  display: inline-block;
  padding: 0.15em 0.7em;
  font-size: 0.78rem;
  line-height: 1.6;
  color: #7A6A52;
  background: #E5DCC8;
  border-radius: 999px;
  white-space: nowrap;
}

/* 正文链接 */
.text-link {
  display: inline-block;
  font-weight: 600;
  font-size: 0.92rem;
}

.text-link::after {
  content: "→";
  margin-left: 0.25em;
  transition: margin-left 0.2s ease;
}

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

.text-link:hover::after {
  margin-left: 0.5em;
}

/* ==========================================================================
   Layout · 全站骨架
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
}

/* 页头 */
.site-header {
  background: #F6F1E5;
  border-bottom: 1px solid #E5DCC8;
}

.header-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #2E2A24;
  letter-spacing: 0.02em;
}

.brand-link:hover {
  text-decoration: none;
  color: #A6402B;
}

.brand-name {
  display: block;
}

/* 目录按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid #E5DCC8;
  border-radius: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle:hover {
  border-color: #A6402B;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: #2E2A24;
  border-radius: 1px;
}

/* 全屏索引层 */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(246, 241, 229, 0.97);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 90px;
}

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

.nav-panel {
  max-width: 640px;
  width: 100%;
  padding: 0 24px;
  position: relative;
}

.nav-close {
  position: absolute;
  top: -50px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid #E5DCC8;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-close:hover {
  border-color: #A6402B;
}

.nav-close span {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
}

.nav-close span::before,
.nav-close span::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
  background: #2E2A24;
}

.nav-close span::before {
  transform: rotate(45deg);
}

.nav-close span::after {
  transform: rotate(-45deg);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: block;
  padding: 14px 20px;
  border: 1px solid #E5DCC8;
  border-radius: 6px;
  background: #F6F1E5;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #2E2A24;
  text-align: center;
}

.nav-list a:hover {
  border-color: #A6402B;
  color: #A6402B;
  text-decoration: none;
}

.nav-list a.is-current {
  border-color: #A6402B;
  color: #A6402B;
  background: #F1E9D7;
}

/* 页脚 */
.site-footer {
  background: #2E2A24;
  color: #E5DCC8;
  margin-top: 80px;
}

.footer-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.footer-nav {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.footer-title {
  font-size: 1rem;
  color: #F6F1E5;
  margin-bottom: 12px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-links a {
  color: #D6CDB8;
  font-size: 0.92rem;
  padding: 4px 0;
  display: inline-block;
}

.footer-links a:hover {
  color: #F6F1E5;
}

.footer-boundary {
  font-size: 0.85rem;
  color: #A89C86;
  border-top: 1px solid #4A443A;
  padding-top: 24px;
  margin-bottom: 12px;
}

.footer-copyright {
  font-size: 0.85rem;
  color: #A89C86;
  margin: 0;
}

/* ==========================================================================
   Layout · 内页骨架
   ========================================================================== */

.inner-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* 面包屑 */
.breadcrumb {
  padding: 24px 0 8px;
  font-size: 0.88rem;
  color: #7A6A52;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb a {
  color: #7A6A52;
}

.breadcrumb a:hover {
  color: #A6402B;
}

.breadcrumb-sep {
  color: #B5A88F;
}

.breadcrumb-current {
  color: #2E2A24;
}

/* 页面标题区 */
.page-header {
  padding: 20px 0 40px;
  border-bottom: 1px solid #E5DCC8;
  margin-bottom: 48px;
}

.page-description {
  font-size: 0.85rem;
  font-weight: 600;
  color: #A6402B;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-summary {
  font-size: 1rem;
  color: #5A4E3E;
  max-width: 720px;
  margin: 0;
}

/* 区块标题 */
.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-desc,
.section-intro {
  color: #5A4E3E;
  max-width: 720px;
  margin-bottom: 32px;
}

/* 说明条 */
.rhythm-note,
.logic-note,
.guide-boundary-note {
  background: #EFE8D8;
  border-left: 3px solid #A6402B;
  padding: 20px 24px;
  border-radius: 0 6px 6px 0;
  margin: 40px 0;
}

.rhythm-label {
  font-weight: 700;
  color: #A6402B;
  margin-bottom: 4px;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.rhythm-text {
  margin: 0;
  color: #4A4032;
}

/* 延伸阅读 */
.related-links {
  margin: 64px 0 0;
  padding-top: 32px;
  border-top: 1px solid #E5DCC8;
}

.related-links-label,
.related-links .section-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: #7A6A52;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.related-links-item {
  display: inline-block;
  margin-right: 24px;
  margin-bottom: 8px;
  font-size: 0.92rem;
  font-weight: 600;
}

.related-links-item::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Components · 首页首屏
   ========================================================================== */

.hero-exhibition {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 72px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #A6402B;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.eyebrow-num {
  display: inline-block;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 8px;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 0.8rem;
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.hero-slogan {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: #A6402B;
  margin-bottom: 16px;
}

.hero-description {
  font-size: 1rem;
  color: #4A4032;
  max-width: 520px;
  margin-bottom: 24px;
}

.hero-open-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.open-badge {
  display: inline-block;
  background: #5C6B4F;
  color: #F6F1E5;
  padding: 4px 14px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.open-detail {
  font-size: 0.92rem;
  color: #5A4E3E;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-primary {
  display: inline-block;
  background: #A6402B;
  color: #F6F1E5;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid #A6402B;
  transition: background 0.2s ease;
}

.cta-primary:hover {
  background: #8E3523;
  text-decoration: none;
}

.cta-secondary {
  display: inline-block;
  background: transparent;
  color: #2E2A24;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid #2E2A24;
  transition: border-color 0.2s ease;
}

.cta-secondary:hover {
  border-color: #A6402B;
  color: #A6402B;
  text-decoration: none;
}

.hero-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E5DCC8;
  background: #EFE8D8;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ==========================================================================
   Components · 首页区块通用
   ========================================================================== */

.home-main section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 72px;
}

.section-heading {
  margin-bottom: 36px;
}

.section-kicker {
  font-size: 0.82rem;
  font-weight: 700;
  color: #A6402B;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.section-note {
  color: #5A4E3E;
  max-width: 680px;
  margin: 0;
}

/* ==========================================================================
   Components · 展签卡
   ========================================================================== */

.exhibit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.exhibit-card {
  display: flex;
  gap: 20px;
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 16px;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.exhibit-card:hover {
  border-color: #A6402B;
  transform: translateY(-2px);
}

.exhibit-num {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 8px;
  flex-shrink: 0;
  align-self: flex-start;
}

.exhibit-cover {
  width: 96px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.exhibit-info {
  flex: 1;
  min-width: 0;
}

.exhibit-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.exhibit-name {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.exhibit-desc {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin-bottom: 8px;
}

/* ==========================================================================
   Components · 题材分类卡
   ========================================================================== */

.genre-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.genre-card {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.genre-card:hover {
  border-color: #A6402B;
  transform: translateY(-2px);
}

.genre-card img,
.genre-card-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.genre-card h3,
.genre-card h4 {
  font-size: 1.05rem;
  margin: 16px 16px 4px;
}

.genre-card .genre-desc {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin: 0 16px 12px;
}

.genre-card .anchor-link {
  display: inline-block;
  margin: 0 16px 16px;
  font-size: 0.88rem;
  font-weight: 600;
}

.genre-card .anchor-link::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Components · 关注方向列表
   ========================================================================== */

.focus-items {
  border-top: 1px solid #E5DCC8;
}

.focus-item {
  display: flex;
  gap: 24px;
  padding: 24px 8px;
  border-bottom: 1px solid #E5DCC8;
  align-items: flex-start;
}

.focus-num {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 10px;
  flex-shrink: 0;
}

.focus-content {
  flex: 1;
  min-width: 0;
}

.focus-title {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.focus-desc {
  font-size: 0.92rem;
  color: #5A4E3E;
  margin-bottom: 8px;
  max-width: 640px;
}

.focus-content a {
  font-size: 0.88rem;
  font-weight: 600;
}

.focus-content a::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Components · 馆藏专题横卡
   ========================================================================== */

.collection-cards {
  display: grid;
  gap: 24px;
}

.collection-card {
  display: flex;
  gap: 24px;
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.collection-card:hover {
  border-color: #A6402B;
  transform: translateY(-2px);
}

.collection-card img,
.collection-card-media img {
  width: 200px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.collection-info,
.collection-card-body {
  flex: 1;
  min-width: 0;
}

.collection-title,
.collection-card-title {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.collection-summary,
.collection-card-desc {
  font-size: 0.92rem;
  color: #5A4E3E;
  margin-bottom: 8px;
}

.collection-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.collection-info a,
.collection-card-body a {
  font-size: 0.88rem;
  font-weight: 600;
}

/* ==========================================================================
   Components · 步骤条
   ========================================================================== */

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

.step-item {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 24px;
  position: relative;
}

.step-num {
  display: inline-block;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 10px;
  margin-bottom: 16px;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin-bottom: 12px;
}

.step-item a {
  font-size: 0.88rem;
  font-weight: 600;
}

.step-item a::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Pages · 当前展览
   ========================================================================== */

/* 重点展签 */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.exhibition-featured .exhibit-card {
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  background: #F1E9D7;
}

.exhibition-featured .exhibit-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.exhibition-featured .exhibit-body {
  padding: 0 20px 20px;
}

.exhibit-number {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 8px;
  display: inline-block;
  margin-bottom: 12px;
}

.tag-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.exhibit-title {
  font-size: 1.2rem;
  margin-bottom: 6px;
}

.exhibition-featured .exhibit-desc {
  font-size: 0.92rem;
  color: #5A4E3E;
  margin-bottom: 12px;
}

/* 更新列表 */
.update-group {
  margin-bottom: 36px;
}

.update-date {
  font-size: 1.05rem;
  color: #7A6A52;
  border-bottom: 1px solid #E5DCC8;
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.update-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.update-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed #E5DCC8;
  flex-wrap: wrap;
}

.update-time {
  font-size: 0.85rem;
  color: #7A6A52;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  width: 48px;
}

.update-text {
  flex: 1;
  min-width: 200px;
  font-size: 0.92rem;
  margin: 0;
}

.update-link {
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* 延伸阅读卡 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  display: block;
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 20px;
  transition: border-color 0.2s ease;
}

.related-card:hover {
  border-color: #A6402B;
  text-decoration: none;
}

.related-name {
  display: block;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1rem;
  font-weight: 700;
  color: #2E2A24;
  margin-bottom: 6px;
}

.related-card:hover .related-name {
  color: #A6402B;
}

.related-desc {
  display: block;
  font-size: 0.85rem;
  color: #5A4E3E;
}

/* ==========================================================================
   Pages · 题材导览
   ========================================================================== */

.genre-group {
  margin-bottom: 48px;
}

.genre-group-title {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.genre-group-title::before {
  content: "· ";
  color: #A6402B;
}

.genre-group-desc {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin-bottom: 20px;
}

.genre-grid-section .genre-card {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  overflow: hidden;
}

.genre-grid-section .genre-card-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.genre-grid-section .genre-card h4 {
  font-size: 1rem;
  margin: 14px 16px 4px;
}

.genre-grid-section .genre-card p {
  font-size: 0.88rem;
  color: #5A4E3E;
  margin: 0 16px 16px;
}

/* 关联专题入口 */
.topic-entry-list {
  display: grid;
  gap: 16px;
}

.topic-entry {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.topic-entry h3 {
  font-size: 1.05rem;
  margin: 0;
  flex: 0 0 auto;
}

.topic-entry p {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin: 0;
  flex: 1;
  min-width: 240px;
}

.topic-entry a {
  font-size: 0.88rem;
  font-weight: 600;
  flex-shrink: 0;
}

.topic-entry a::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Pages · 馆藏专题
   ========================================================================== */

.collection-list-section .collection-card {
  margin-bottom: 20px;
}

.collection-card-no {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 8px;
  display: inline-block;
  margin-bottom: 10px;
}

.collection-card-reader {
  font-size: 0.88rem;
  color: #5A4E3E;
  margin-bottom: 10px;
}

.collection-card-reader strong {
  color: #2E2A24;
}

/* 比较表 */
.table-wrap {
  overflow-x: auto;
  margin: 24px 0 40px;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

.compare-table th,
.compare-table td {
  border: 1px solid #E5DCC8;
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: #2E2A24;
  color: #F6F1E5;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 0.95rem;
  font-weight: 700;
}

.compare-table tbody th {
  background: #EFE8D8;
  color: #2E2A24;
  font-weight: 700;
  width: 120px;
}

.compare-table tbody td {
  color: #4A4032;
}

/* 结论与行动入口 */
.conclusion-section {
  background: #EFE8D8;
  border-radius: 8px;
  padding: 32px;
  margin-top: 16px;
}

.conclusion-text {
  font-size: 0.95rem;
  color: #4A4032;
  margin-bottom: 24px;
}

.action-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.action-link {
  display: inline-block;
  background: #A6402B;
  color: #F6F1E5;
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid #A6402B;
}

.action-link:hover {
  background: #8E3523;
  text-decoration: none;
}

/* ==========================================================================
   Pages · 参观指南
   ========================================================================== */

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

.content-media-inline {
  margin-bottom: 24px;
}

.content-media-inline img,
.guide-figure img {
  width: 100%;
  max-width: 720px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #E5DCC8;
}

.content-media-inline figcaption,
.guide-figure figcaption {
  font-size: 0.82rem;
  color: #7A6A52;
  margin-top: 8px;
  max-width: 720px;
}

.guide-figure {
  max-width: 1120px;
  margin: 0 auto 48px;
  padding: 0 24px;
}

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

/* 步骤卡 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.step-card {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 24px;
}

.step-number {
  display: inline-block;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 10px;
  margin-bottom: 14px;
}

.step-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin-bottom: 12px;
}

.step-card a {
  font-size: 0.88rem;
  font-weight: 600;
}

.step-card a::after {
  content: "→";
  margin-left: 0.2em;
}

/* 内容组织说明 */
.org-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.org-list li {
  padding: 10px 0;
  border-bottom: 1px dashed #E5DCC8;
  font-size: 0.92rem;
  color: #4A4032;
}

.org-list strong {
  color: #2E2A24;
  margin-right: 8px;
}

/* FAQ 折叠 */
.faq-item {
  border: 1px solid #E5DCC8;
  border-radius: 6px;
  margin-bottom: 12px;
  background: #F1E9D7;
}

.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: #A6402B;
  font-weight: 700;
}

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

.faq-item summary:hover {
  color: #A6402B;
}

.faq-item p {
  padding: 0 20px 16px;
  margin: 0;
  font-size: 0.92rem;
  color: #4A4032;
}

/* 边界说明条 */
.guide-boundary-note p {
  margin: 0;
  font-size: 0.92rem;
  color: #4A4032;
}

.guide-boundary-note strong {
  color: #A6402B;
}

/* ==========================================================================
   Pages · 场馆信息
   ========================================================================== */

.about-intro p {
  color: #4A4032;
  max-width: 720px;
}

/* 分区地图 */
.map-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.map-card {
  background: #F1E9D7;
  border: 1px solid #E5DCC8;
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

.map-card:hover {
  border-color: #A6402B;
}

.map-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.map-card h3::before {
  content: "· ";
  color: #A6402B;
}

.map-card p {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin-bottom: 12px;
}

.map-card a {
  font-size: 0.88rem;
  font-weight: 600;
}

.map-card a::after {
  content: "→";
  margin-left: 0.2em;
}

.about-figure {
  margin: 32px 0 48px;
}

.about-figure img {
  width: 100%;
  max-width: 720px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #E5DCC8;
}

.about-figure figcaption {
  font-size: 0.82rem;
  color: #7A6A52;
  margin-top: 8px;
  max-width: 720px;
}

/* 原则列表 */
.principles-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: principle;
}

.principles-list li {
  counter-increment: principle;
  padding: 20px 0;
  border-bottom: 1px solid #E5DCC8;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.principles-list li::before {
  content: counter(principle, decimal-leading-zero);
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 1rem;
  font-weight: 700;
  color: #A6402B;
  border: 1px solid #A6402B;
  border-radius: 4px;
  padding: 2px 10px;
  flex-shrink: 0;
}

.principles-list h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.principles-list p {
  font-size: 0.9rem;
  color: #5A4E3E;
  margin: 0;
}

/* 反馈说明 */
.feedback-section {
  background: #EFE8D8;
  border-radius: 8px;
  padding: 32px;
  margin-top: 16px;
}

.feedback-section p {
  font-size: 0.95rem;
  color: #4A4032;
  margin-bottom: 16px;
}

.feedback-section a {
  font-weight: 600;
  margin-right: 20px;
}

.feedback-section a::after {
  content: "→";
  margin-left: 0.2em;
}

/* ==========================================================================
   Pages · 404
   ========================================================================== */

.error-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.error-section {
  text-align: center;
  padding: 96px 24px 120px;
}

.error-code {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 5rem;
  font-weight: 700;
  color: #A6402B;
  margin-bottom: 8px;
}

.error-section h1 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.error-desc {
  color: #5A4E3E;
  max-width: 480px;
  margin: 0 auto 32px;
}

.btn-primary {
  display: inline-block;
  background: #A6402B;
  color: #F6F1E5;
  padding: 12px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid #A6402B;
}

.btn-primary:hover {
  background: #8E3523;
  text-decoration: none;
}

.error-hint {
  font-size: 0.85rem;
  color: #7A6A52;
  margin-top: 24px;
}

/* ==========================================================================
   Responsive · 1024px 断点
   ========================================================================== */

@media (max-width: 1024px) {
  .header-shell {
    padding: 0 20px;
  }

  .footer-shell,
  .inner-main,
  .home-main section,
  .hero-exhibition {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-exhibition {
    gap: 40px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .exhibit-grid,
  .featured-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

/* ==========================================================================
   Responsive · 640px 断点（手机端）
   ========================================================================== */

@media (max-width: 640px) {
  body {
    font-size: 0.95rem;
  }

  .header-shell {
    height: 60px;
    padding: 0 16px;
  }

  .brand-link {
    font-size: 1.2rem;
  }

  /* 手机端显示汉堡按钮 */
  .nav-toggle {
    display: flex;
  }

  /* 手机端导航列表收起，由 .is-open 展开 */
  .nav-list {
    display: none;
  }

  .nav-list.is-open {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .site-nav {
    padding-top: 72px;
  }

  .nav-close {
    top: -40px;
    right: 16px;
  }

  .nav-panel {
    padding: 0 16px;
  }

  .footer-shell {
    padding: 40px 16px 32px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    flex-direction: column;
    gap: 4px;
  }

  .footer-links a {
    padding: 6px 0;
    font-size: 1rem;
  }

  /* 首页首屏 */
  .hero-exhibition {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 56px;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-slogan {
    font-size: 1.05rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .cta-primary,
  .cta-secondary {
    text-align: center;
    width: 100%;
  }

  .home-main section {
    padding: 0 16px 56px;
  }

  /* 展签卡 */
  .exhibit-grid {
    grid-template-columns: 1fr;
  }

  .exhibit-card {
    flex-direction: column;
  }

  .exhibit-cover {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  /* 题材卡 */
  .genre-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .genres-preview .genre-card h3,
  .genres-preview .genre-card .genre-desc {
    margin-left: 12px;
    margin-right: 12px;
  }

  .genres-preview .genre-card .anchor-link {
    margin-left: 12px;
    margin-right: 12px;
    margin-bottom: 12px;
  }

  /* 关注方向 */
  .focus-item {
    flex-direction: column;
    gap: 12px;
    padding: 20px 4px;
  }

  .focus-num {
    align-self: flex-start;
  }

  /* 馆藏专题横卡 */
  .collection-card {
    flex-direction: column;
  }

  .collection-card img,
  .collection-card-media img {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  /* 步骤 */
  .steps-row,
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

  .breadcrumb {
    padding-top: 16px;
  }

  .page-header {
    padding: 16px 0 28px;
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 1.6rem;
  }

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

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

  /* 题材导览分组 */
  .genre-grid-section .genre-grid {
    grid-template-columns: 1fr;
  }

  .topic-entry {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .topic-entry p {
    min-width: 0;
  }

  /* 比较表 */
  .table-wrap {
    margin-left: -16px;
    margin-right: -16px;
    padding: 0 16px;
  }

  /* 地图 */
  .map-grid {
    grid-template-columns: 1fr;
  }

  /* 原则列表 */
  .principles-list li {
    flex-direction: column;
    gap: 10px;
  }

  /* 404 */
  .error-section {
    padding: 64px 16px 80px;
  }

  .error-code {
    font-size: 3.5rem;
  }

  .error-section h1 {
    font-size: 1.4rem;
  }
}