/* ============================================================
   base — 变量、重置、全局基础
   ============================================================ */
:root {
  --color-bg: #f7f4ef;
  --color-primary: #2b5fd9;
  --color-accent: #e8873a;
  --color-text: #2b2b2b;
  --color-muted: #6b6b6b;
  --color-white: #ffffff;
  --color-border: #e3ddd2;
  --color-soft: #efeae1;
  --radius: 8px;
  --container: 1200px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.1);
  --header-h: 64px;
}

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

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

body {
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
}

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

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

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

ul,
ol {
  list-style: none;
}

summary {
  cursor: pointer;
  list-style: none;
}

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

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
}

/* ============================================================
   layout — 全站骨架：公告条、页头、页脚、主容器
   ============================================================ */

/* 公告条 */
.notice-bar,
.announce-bar {
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 20px;
  position: relative;
  z-index: 20;
}

.notice-bar p,
.announce-bar .announce-text {
  margin: 0;
  text-align: center;
}

.notice-bar .notice-close,
.announce-bar .announce-close {
  background: transparent;
  border: none;
  color: var(--color-white);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

.notice-bar .notice-close:hover,
.announce-bar .announce-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* 页头 */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.brand-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-logo:hover {
  color: var(--color-primary);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: 6px;
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--color-primary);
  background: var(--color-soft);
}

.nav-list a.is-current {
  color: var(--color-primary);
  background: var(--color-soft);
  font-weight: 700;
}

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

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 48px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 8px;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  color: var(--color-muted);
  opacity: 0.6;
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}

/* 页头标题区 */
.page-header {
  background: var(--color-soft);
  border-radius: var(--radius);
  padding: 32px 36px;
  margin: 16px 0 32px;
}

.page-header h1.page-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
}

.page-header .page-description,
.page-header .page-summary {
  margin-top: 8px;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 780px;
}

.page-header-text {
  flex: 1;
}

.page-header-media {
  margin-top: 16px;
}

.page-header-media img {
  border-radius: var(--radius);
  width: 100%;
  max-height: 220px;
  object-fit: cover;
}

/* 页脚 */
.site-footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
  padding: 40px 24px 24px;
}

.site-footer {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
}

.footer-brand p {
  font-size: 15px;
  color: var(--color-muted);
}

.footer-brand strong {
  font-size: 18px;
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 20px 0 16px;
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-muted);
}

.footer-nav a:hover {
  color: var(--color-primary);
}

.footer-boundary {
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
}

/* ============================================================
   components — 按钮、卡片、通用模块
   ============================================================ */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #1f4ab8;
  color: var(--color-white);
  box-shadow: var(--shadow-card);
}

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

.btn-secondary:hover {
  background: var(--color-soft);
  color: var(--color-primary);
}

/* 相关链接条 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 40px;
  padding: 16px 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--color-soft);
}

.related-links-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* 折叠问答 */
details.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}

details.faq-item summary {
  font-weight: 600;
  font-size: 16px;
  color: var(--color-text);
  position: relative;
  padding-right: 28px;
}

details.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-size: 20px;
  color: var(--color-primary);
  font-weight: 400;
  line-height: 1.2;
}

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

details.faq-item p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--color-muted);
}

/* ============================================================
   pages — 首页
   ============================================================ */

/* 参观信息区 */
.intro-visit {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0 40px;
}

.intro-copy h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
}

.intro-copy > p {
  margin-top: 16px;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 520px;
}

.intro-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.intro-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: var(--shadow-card);
}

/* 题材分类展区 */
.genre-exhibit {
  padding: 48px 0;
}

.genre-exhibit > h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}

.genre-exhibit > h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-top: 12px;
}

.exhibit-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0;
}

.exhibit-row.reverse .exhibit-copy {
  order: 1;
}

.exhibit-row.reverse .exhibit-media {
  order: 2;
}

.exhibit-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: var(--shadow-card);
}

.exhibit-copy h3 {
  font-size: 22px;
  font-weight: 700;
}

.exhibit-copy > p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--color-muted);
}

.exhibit-copy .audience-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  background: var(--color-soft);
  border-radius: 20px;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
}

.exhibit-copy > a {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  font-size: 15px;
}

/* 阅读路径提示带 */
.reading-path {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 40px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.reading-path > h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}

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

.step-item {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 24px;
}

.step-num {
  display: inline-block;
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.step-item h3 {
  font-size: 18px;
  margin-top: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

.step-item a {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
}

/* 选漫工具入口 */
.matcher-entry {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0;
}

.matcher-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: var(--shadow-card);
}

.matcher-copy h2 {
  font-size: 24px;
  font-weight: 800;
}

.matcher-copy p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--color-muted);
}

.matcher-copy .btn-primary {
  margin-top: 20px;
}

/* 最近更新速览 */
.recent-updates {
  padding: 40px 0;
}

.recent-updates > h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}

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

.update-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.update-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

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

.update-card h3 {
  font-size: 15px;
  padding: 12px 12px 4px;
}

.update-card p {
  font-size: 13px;
  color: var(--color-muted);
  padding: 0 12px 12px;
}

/* 阅读答疑摘要 */
.faq-summary {
  padding: 40px 0;
}

.faq-summary > h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 20px;
}

.faq-summary .faq-more {
  margin-top: 16px;
  font-size: 15px;
}

/* ============================================================
   pages — 漫画分类 genre.html
   ============================================================ */

.genre-index {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.genre-index .section-title {
  grid-column: 1 / -1;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 0;
}

.genre-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.genre-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.genre-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.genre-info {
  padding: 16px 20px 20px;
}

.genre-info h3 {
  font-size: 18px;
  font-weight: 700;
}

.genre-info > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

.genre-audience {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 10px;
  background: var(--color-soft);
  border-radius: 20px;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
}

.genre-links {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.genre-links a {
  font-size: 14px;
  font-weight: 600;
}

/* 浏览提示带 */
.browse-tip {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 32px;
  margin-bottom: 24px;
}

.browse-tip h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.browse-tip p {
  font-size: 15px;
  color: var(--color-muted);
}

.browse-tip a {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
}

/* ============================================================
   pages — 选漫工具 matcher.html
   ============================================================ */

.matcher-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.matcher-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.matcher-panel h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.pref-group {
  margin-bottom: 24px;
}

.pref-label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
}

.pref-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pref-option {
  position: relative;
  cursor: pointer;
}

.pref-option input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.pref-option span {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 14px;
  color: var(--color-text);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.pref-option input:checked + span {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

.matcher-result {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.matcher-result h2 {
  font-size: 20px;
  font-weight: 700;
}

.result-summary {
  margin-top: 12px;
  font-size: 16px;
}

.result-summary strong {
  color: var(--color-primary);
}

.result-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
}

.result-figure {
  margin-top: 16px;
}

.result-figure img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.result-next {
  margin-top: 16px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.result-next a {
  font-weight: 600;
  font-size: 15px;
}

/* 字段解释 */
.field-explainer {
  margin-bottom: 32px;
}

.field-explainer h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

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

.field-item dt {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-primary);
}

.field-item dd {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

/* 使用限制 */
.usage-limit {
  background: var(--color-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.usage-limit h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.usage-limit p {
  font-size: 15px;
  color: var(--color-muted);
}

/* ============================================================
   pages — 阅读指南 guide.html
   ============================================================ */

.guide-steps {
  margin-bottom: 40px;
}

.guide-steps > h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

.content-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.content-media figcaption {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
  text-align: center;
}

.guide-steps .step-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  background: transparent;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.guide-steps .step-item:last-child {
  border-bottom: none;
}

.guide-steps .step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 700;
}

.step-content p {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 8px;
}

.step-tip {
  font-size: 14px;
  background: var(--color-soft);
  border-radius: 6px;
  padding: 8px 12px;
  margin-top: 12px;
  display: inline-block;
}

.step-links {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.step-links a {
  font-weight: 600;
  font-size: 14px;
}

/* 更新规则 */
.update-rules {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 32px;
}

.update-rules h2 {
  font-size: 22px;
  font-weight: 700;
}

.section-intro {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 8px;
}

.rule-list {
  margin-top: 16px;
}

.rule-list li {
  padding: 10px 0;
  font-size: 15px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
}

.rule-list li:last-child {
  border-bottom: none;
}

.rule-list strong {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* 边界提示 */
.guide-boundary {
  background: var(--color-soft);
  border-radius: var(--radius);
  padding: 24px 32px;
}

.guide-boundary h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-boundary p {
  font-size: 15px;
  color: var(--color-muted);
}

.boundary-link {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
}

/* ============================================================
   pages — 题材词典 glossary.html
   ============================================================ */

.glossary-section {
  margin-bottom: 40px;
}

.glossary-section h2 {
  font-size: 22px;
  font-weight: 700;
}

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

.term-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.term-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.term-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
}

.term-definition {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

.term-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
}

/* 关联入口 */
.glossary-links {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 32px;
}

.glossary-links h2 {
  font-size: 22px;
  font-weight: 700;
}

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

.link-entry {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 20px;
}

.link-entry-title {
  font-size: 16px;
  font-weight: 700;
}

.link-entry-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

.link-entry-action {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
  font-size: 14px;
}

/* 词典插图 */
.glossary-figure {
  margin: 32px 0;
}

.glossary-figure img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.glossary-figure figcaption {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
  text-align: center;
}

/* ============================================================
   pages — 阅读答疑 faq.html
   ============================================================ */

.page-header {
  display: flex;
  gap: 32px;
  align-items: center;
}

.page-header-media {
  flex-shrink: 0;
}

.page-header-media img {
  width: 280px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}

.faq-section {
  margin-bottom: 40px;
}

.faq-section > h2 {
  font-size: 22px;
  font-weight: 700;
}

.faq-group {
  margin-top: 28px;
}

.faq-group-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-soft);
  margin-bottom: 16px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-muted);
}

.faq-next {
  margin-top: 8px;
}

.faq-next a {
  font-weight: 600;
  font-size: 14px;
}

/* 反馈提示 */
.faq-feedback-tip {
  background: var(--color-soft);
  border-radius: var(--radius);
  padding: 24px 32px;
}

.faq-feedback-tip h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.faq-feedback-tip p {
  font-size: 15px;
  color: var(--color-muted);
}

.faq-feedback-tip a {
  font-weight: 600;
}

/* ============================================================
   pages — 反馈与边界 feedback.html
   ============================================================ */

.page-layout {
  display: grid;
  gap: 32px;
}

.section-block {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
}

.section-block h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.lead-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.section-block p {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 8px;
}

.principle-list {
  margin-top: 16px;
}

.principle-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
  color: var(--color-text);
  display: flex;
  gap: 8px;
}

.principle-list li:last-child {
  border-bottom: none;
}

.principle-list strong {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* 边界图与列表 */
.boundary-figure {
  margin: 24px 0;
}

.boundary-figure img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.boundary-figure figcaption {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
  text-align: center;
}

.boundary-list {
  margin-top: 16px;
}

.boundary-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
  color: var(--color-text);
  display: flex;
  gap: 8px;
}

.boundary-list li:last-child {
  border-bottom: none;
}

.boundary-list strong {
  color: var(--color-primary);
  flex-shrink: 0;
}

.boundary-note {
  background: var(--color-soft);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-muted);
}

/* 反馈方式网格 */
.feedback-ways-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.way-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.way-card h3 {
  font-size: 16px;
  font-weight: 700;
}

.way-card p {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
}

.way-card a {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
  font-size: 14px;
}

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

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px 24px;
}

.error-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
  max-width: 620px;
  margin: 0 auto;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.error-panel h1 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 16px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 12px;
}

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

.error-help {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-muted);
}

.error-help a {
  font-weight: 600;
}

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

@media (max-width: 960px) {
  .intro-visit,
  .exhibit-row,
  .matcher-entry {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .exhibit-row.reverse .exhibit-copy {
    order: 0;
  }

  .exhibit-row.reverse .exhibit-media {
    order: 0;
  }

  .genre-index,
  .term-grid,
  .field-list,
  .link-entry-list,
  .feedback-ways-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .matcher-shell {
    grid-template-columns: 1fr;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-header-media img {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    gap: 0;
  }

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

  .nav-list li a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

  .nav-list li:last-child a {
    border-bottom: none;
  }

  .home-main,
  .inner-main {
    padding: 0 16px;
  }

  .intro-visit {
    padding: 32px 0 24px;
  }

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

  .page-header {
    padding: 24px 20px;
  }

  .page-header h1.page-title {
    font-size: 24px;
  }

  .genre-index,
  .term-grid,
  .field-list,
  .link-entry-list,
  .feedback-ways-grid {
    grid-template-columns: 1fr;
  }

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

  .genre-exhibit {
    padding: 32px 0;
  }

  .exhibit-row {
    padding: 20px 0;
    gap: 20px;
  }

  .reading-path {
    padding: 28px 20px;
  }

  .matcher-entry {
    padding: 32px 0;
  }

  .matcher-panel,
  .matcher-result {
    padding: 20px;
  }

  .guide-steps .step-item {
    grid-template-columns: 44px 1fr;
    gap: 14px;
  }

  .guide-steps .step-number {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .site-footer {
    padding: 32px 16px 20px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 10px;
  }

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

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