/* ==========================================================================
   香蕉漫画 · 全站样式表
   版本：1.0
   说明：本样式表覆盖整站全部页面，按 base / layout / components / pages / responsive 分组。
   ========================================================================== */

/* ==========================================================================
   Base —— 基础变量、重置、全局排版
   ========================================================================== */

:root {
  --color-bg: #FDFDF8;
  --color-primary: #3A7D5B;
  --color-primary-dark: #2F6649;
  --color-primary-light: #EAF2EC;
  --color-accent: #C89F6A;
  --color-hot: #D95D5D;
  --color-romance: #E08A9F;
  --color-scifi: #5D8FB0;
  --color-healing: #8DAA6A;
  --color-mystery: #6A6A8F;
  --color-text: #2B2B2B;
  --color-text-light: #5A5A5A;
  --color-border: #E5E0D6;
  --color-card-bg: #FFFFFF;

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

  --container-width: 1200px;
  --container-padding: 24px;

  --radius-sm: 4px;
  --radius-md: 8px;

  --shadow-card: 0 2px 8px rgba(43, 43, 43, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(43, 43, 43, 0.12);

  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

p {
  margin-bottom: 0;
}

.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;
}

/* ==========================================================================
   Layout —— 全站容器、页头、页脚骨架
   ========================================================================== */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand-area {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-name {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-light);
  white-space: nowrap;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

.nav-list li a.is-current {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 600;
}

.header-action {
  flex-shrink: 0;
}

.btn-explore {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.btn-explore:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
}

.site-main {
  flex: 1;
}

.site-footer {
  background-color: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-brand-name {
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--color-text-light);
  max-width: 360px;
}

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

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

.footer-links li a {
  font-size: 14px;
  color: var(--color-text-light);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px var(--container-padding);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-light);
  max-width: var(--container-width);
  margin: 0 auto;
}

/* ==========================================================================
   Components —— 可复用模块
   ========================================================================== */

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding) 0;
  font-size: 14px;
  color: var(--color-text-light);
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text-light);
}

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px var(--container-padding) 0;
}

.page-title {
  font-size: 28px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 760px;
}

/* 区块标题 */
.section-header {
  margin-bottom: 28px;
}

.section-title {
  font-size: 24px;
  color: var(--color-text);
  margin-bottom: 6px;
}

.section-desc,
.section-lead {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 680px;
}

/* 通用卡片 */
.pick-card,
.related-card,
.dimension-card,
.branch-card,
.scene-card,
.path-next-card,
.boundary-card,
.explore-card,
.link-back-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.pick-card:hover,
.related-card:hover,
.dimension-card:hover,
.branch-card:hover,
.scene-card:hover,
.path-next-card:hover,
.boundary-card:hover,
.explore-card:hover,
.link-back-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* 封面图约束 */
figure img,
.pick-card img,
.reco-media img,
.cover-card img,
.theme-intro-media img,
.scope-figure img,
.copyright-figure img,
.path-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Pages —— 首页
   ========================================================================== */

/* 首屏：主题目录 + 主视觉 */
.hero {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: center;
}

.theme-directory {
  padding: 24px 0;
}

.hero-title {
  font-size: 32px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 440px;
}

.directory-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.directory-item {
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
  transition: border-color var(--transition-base);
}

.directory-item:hover {
  border-color: var(--color-accent);
}

.directory-link {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.directory-link:hover {
  color: var(--color-primary);
}

.hero-visual {
  position: relative;
}

.hero-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  aspect-ratio: 16 / 10;
}

.btn-random {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.btn-random:hover {
  background-color: #B8894F;
  color: #fff;
  transform: translateY(-1px);
}

/* 浏览路径流程带 */
.path {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

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

.path-node {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  transition: box-shadow var(--transition-base);
}

.path-node:hover {
  box-shadow: var(--shadow-card-hover);
}

.node-number {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.node-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.node-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

/* 题材分类索引 */
.category {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

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

.category-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: block;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.category-name {
  display: block;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.category-desc {
  display: block;
  font-size: 14px;
  color: var(--color-text-light);
}

.category-hot-blood .category-name { color: var(--color-hot); }
.category-romance .category-name { color: var(--color-romance); }
.category-scifi .category-name { color: var(--color-scifi); }
.category-healing .category-name { color: var(--color-healing); }
.category-mystery .category-name { color: var(--color-mystery); }
.category-adventure .category-name { color: var(--color-primary); }

/* 本期主题摘要 */
.theme-summary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.summary-card {
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 32px;
}

.summary-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background-color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.summary-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.summary-text {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 720px;
  margin-bottom: 16px;
}

.btn-text {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.btn-text:hover {
  text-decoration: underline;
}

/* 编辑推荐 */
.editor-picks {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

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

.pick-card {
  padding: 16px;
}

.pick-card img {
  aspect-ratio: 3 / 4;
  margin-bottom: 12px;
}

.pick-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.pick-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.pick-audience {
  font-size: 13px;
  color: var(--color-primary);
  display: inline-block;
  background-color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 999px;
}

/* 新增主题动态 */
.updates {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.updates-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.update-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.update-tag {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 12px;
  border-radius: 999px;
}

.update-text {
  font-size: 15px;
  color: var(--color-text);
}

/* 关联作品入口 */
.related {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.related-card {
  padding: 24px;
  display: block;
}

.related-icon {
  display: inline-block;
  font-size: 24px;
  margin-bottom: 8px;
}

.related-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.related-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

/* 阅读指南提示条 */
.tip {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.tip-inner {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.tip-text {
  font-size: 15px;
  color: var(--color-text);
}

.btn-tip {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.btn-tip:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

/* 相关链接条 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px var(--container-padding) 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

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

.related-links-item {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 600;
}

.related-links-item:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Pages —— 内页通用
   ========================================================================== */

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

/* ==========================================================================
   Pages —— 本期主题 bqzt
   ========================================================================== */

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

.theme-intro-text h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.theme-intro-text p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.theme-intro-media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.theme-intro-media figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 0;
}

.branch-list {
  padding: 40px 0;
}

.branch-list-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.branch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.branch-card {
  padding: 24px;
}

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

.branch-card > p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.branch-audience {
  font-size: 13px;
  color: var(--color-primary);
}

.branch-audience strong {
  font-weight: 600;
}

.path-next {
  padding: 40px 0;
}

.path-next > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.path-next-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.path-next-card {
  padding: 24px;
  display: block;
}

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

.path-next-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.path-next-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-ext {
  padding: 40px 0;
}

.related-ext > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.related-ext-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 10px 20px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.related-ext-link:hover {
  background-color: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

/* ==========================================================================
   Pages —— 关联作品 glzp
   ========================================================================== */

.dimension-tabs {
  padding: 40px 0;
}

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

.dimension-card {
  padding: 24px;
}

.dimension-name {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.dimension-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

.related-grid-section {
  padding: 40px 0;
}

.group-block {
  margin-bottom: 32px;
}

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

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

.cover-card {
  margin: 0;
}

.cover-card img {
  aspect-ratio: 3 / 4;
}

.cover-caption {
  font-size: 14px;
  color: var(--color-text);
  padding: 8px 0;
  text-align: center;
}

.extend {
  padding: 40px 0;
}

.extend-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.extend-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 10px 20px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.extend-link:hover {
  background-color: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

.related-entry {
  padding: 40px 0;
}

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

.entry-list li a {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.entry-list li a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ==========================================================================
   Pages —— 编辑推荐 bjtj
   ========================================================================== */

.reco-list {
  padding: 40px 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.reco-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  align-items: center;
}

.reco-media {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.reco-content h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.reco-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.reco-audience {
  font-size: 13px;
  color: var(--color-primary);
}

.reco-audience strong {
  font-weight: 600;
}

.scene-tags {
  padding: 40px 0;
}

.scene-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

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

.scene-card {
  padding: 24px;
}

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

.scene-card p {
  font-size: 14px;
  color: var(--color-text-light);
}

.link-back {
  padding: 40px 0;
}

.link-back-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.link-back-card {
  padding: 24px;
  display: block;
}

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

.link-back-card p {
  font-size: 14px;
  color: var(--color-text-light);
}

/* ==========================================================================
   Pages —— 阅读指南 ydzn
   ========================================================================== */

.flow-section {
  padding: 40px 0;
}

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

.flow-node {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
}

.flow-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.flow-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.flow-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

.columns-section {
  padding: 40px 0;
}

.columns-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.column-item {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.column-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.column-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.column-link {
  font-size: 14px;
  font-weight: 600;
}

.path-image-section {
  padding: 40px 0;
}

.path-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.path-caption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 0;
}

.faq-section {
  padding: 40px 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-primary);
}

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

.faq-answer {
  padding: 0 24px 16px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-text-light);
}

.explore-next {
  padding: 40px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.explore-card {
  padding: 24px;
}

.explore-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.explore-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.explore-link {
  font-size: 14px;
  font-weight: 600;
}

/* ==========================================================================
   Pages —— 内容边界 nrbj
   ========================================================================== */

.scope-section {
  padding: 40px 0;
}

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

.scope-text p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.scope-figure {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.scope-detail {
  padding: 40px 0;
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

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

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

.scope-item p {
  font-size: 14px;
  color: var(--color-text-light);
}

.boundary-section {
  padding: 40px 0;
}

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

.boundary-card {
  padding: 20px;
}

.boundary-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.boundary-card p {
  font-size: 14px;
  color: var(--color-text-light);
}

.feedback-section {
  padding: 40px 0;
}

.feedback-section > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

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

.feedback-list li a {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.feedback-list li a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ==========================================================================
   Pages —— 版权与反馈 bqfk
   ========================================================================== */

.copyright-section {
  padding: 40px 0;
}

.section-head h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.section-head p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

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

.copyright-text p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.copyright-figure {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.copyright-figure figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 0;
}

.tips-section {
  padding: 40px 0;
}

.tips-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tip-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.tip-num {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.tip-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.tip-content p {
  font-size: 14px;
  color: var(--color-text-light);
}

.feedback-path-section {
  padding: 40px 0;
}

.feedback-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: step;
}

.feedback-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.step-badge {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background-color: var(--color-primary);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.step-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-light);
}

.step-content p a {
  font-weight: 600;
}

.feedback-note {
  margin-top: 20px;
  padding: 16px 20px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
}

.feedback-note p {
  font-size: 14px;
  color: var(--color-text);
}

/* ==========================================================================
   Pages —— 404
   ========================================================================== */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.error-section {
  padding: 80px 0;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 480px;
  margin: 0 auto 24px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.btn-home,
.btn-theme {
  display: inline-block;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.btn-home {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-home:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

.btn-theme {
  background-color: var(--color-card-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-theme:hover {
  background-color: var(--color-primary-light);
}

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

@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
  }

  .header-inner {
    min-height: 60px;
    gap: 12px;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: static;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 4px;
    box-shadow: 0 8px 16px rgba(43, 43, 43, 0.08);
  }

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

  .nav-list li a {
    padding: 12px 16px;
    font-size: 15px;
  }

  .header-action {
    display: none;
  }

  .hero {
    padding: 32px var(--container-padding) 24px;
  }

  .hero-inner {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .theme-directory {
    order: 1;
  }

  .hero-visual {
    order: 2;
  }

  .path,
  .category,
  .theme-summary,
  .editor-picks,
  .updates,
  .related,
  .tip {
    padding: 32px var(--container-padding);
  }

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

  .flow-wrap {
    grid-template-columns: 1fr;
  }

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

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

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

  .tip-inner {
    flex-direction: column;
    text-align: center;
    padding: 24px;
  }

  .theme-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .theme-intro-media {
    order: -1;
  }

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

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

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

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

  .reco-item {
    grid-template-columns: 1fr;
  }

  .reco-media {
    max-width: 240px;
  }

  .scene-group {
    grid-template-columns: 1fr;
  }

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

  .columns-list {
    flex-direction: column;
  }

  .explore-next {
    grid-template-columns: 1fr;
  }

  .scope-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .scope-figure {
    order: -1;
  }

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

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

  .copyright-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .copyright-figure {
    order: -1;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px var(--container-padding) 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    padding: 16px var(--container-padding);
  }

  .related-links {
    flex-wrap: wrap;
    gap: 8px;
  }

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

@media (max-width: 480px) {
  .cover-grid {
    grid-template-columns: 1fr;
  }

  .reco-media {
    max-width: 100%;
  }

  .tip-inner {
    padding: 20px;
  }
}