/* ============================================================
   Base — 全局基础样式
   ============================================================ */
:root {
  --color-primary: #1F3A5F;
  --color-primary-light: #2A4A75;
  --color-primary-dark: #162B47;
  --color-accent: #FFC857;
  --color-accent-dark: #E0A93A;
  --color-bg: #F0F4F8;
  --color-surface: #FFFFFF;
  --color-text: #2D2D2D;
  --color-text-secondary: #4A4A4A;
  --color-text-light: #8A94A6;
  --color-border: #DCE3EC;
  --color-link: #1A5CFF;
  --color-link-hover: #0E3FBF;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --header-height: 68px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --shadow-card: 0 2px 8px rgba(31, 58, 95, 0.08);
  --shadow-card-hover: 0 6px 20px rgba(31, 58, 95, 0.14);
  --transition-base: 0.25s ease;
}

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

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

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

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

/* ============================================================
   Layout — 全局布局骨架（header / main / footer）
   ============================================================ */

/* 全站 body 基础布局 */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-bg);
}

.site-home,
.site-inner,
.site-error {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main {
  padding-bottom: 0;
}

.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

/* ============================================================
   Header — 页头与主导航
   ============================================================ */

.site-header {
  background-color: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

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

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0;
}

.brand-slogan {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 2px;
  letter-spacing: 0;
}

.brand:hover .brand-name,
.brand:hover .brand-slogan {
  color: var(--color-accent);
}

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

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list a:hover {
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.1);
}

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

/* 汉堡按钮（默认隐藏） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #FFFFFF;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ============================================================
   Footer — 页脚
   ============================================================ */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.footer-slogan {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 14px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer-col ul a:hover {
  color: var(--color-link);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  max-width: var(--container-width);
  margin: 0 auto;
}

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

.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.back-to-top:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

/* ============================================================
   Components — 通用组件
   ============================================================ */

/* 页面标题区（内页共用） */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

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

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

.breadcrumb-sep {
  color: var(--color-text-light);
  font-size: 12px;
}

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

.page-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 32px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 720px;
  line-height: 1.7;
  margin: 0;
}

/* 区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-intro,
.section-lead,
.section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin-bottom: 24px;
  line-height: 1.7;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

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

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

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-border);
}

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

/* 标签 */
.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  background-color: rgba(31, 58, 95, 0.08);
  border-radius: 999px;
  margin-right: 6px;
  margin-bottom: 4px;
  white-space: nowrap;
}

/* 图片容器 */
figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  text-align: center;
  margin-top: 8px;
  line-height: 1.5;
}

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

/* Hero 首屏 */
.hero-section {
  background-color: var(--color-primary);
  padding: 64px 24px;
}

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

.hero-title {
  font-size: 32px;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.hero-description {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 520px;
}

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

.hero-actions .btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.hero-actions .btn-primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-primary);
}

.hero-actions .btn-secondary {
  background-color: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.5);
}

.hero-actions .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
  color: #FFFFFF;
}

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

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

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

/* 题材分类导航带 */
.categories-nav-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 8px;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.category-tags .tag {
  padding: 8px 20px;
  font-size: 14px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.category-tags .tag:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

/* 最近更新 */
.latest-updates-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
}

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

.update-item {
  display: flex;
  gap: 16px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.update-date {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--color-text-light);
  width: 68px;
  padding-top: 4px;
}

.update-content {
  display: flex;
  gap: 14px;
  min-width: 0;
  flex: 1;
}

.update-content img {
  width: 72px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.update-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.update-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 200, 87, 0.25);
  color: #8A6D00;
}

.update-status {
  font-size: 13px;
  color: var(--color-text-light);
}

/* 人气榜单 */
.rankings-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 24px;
}

.rankings-list {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ranking-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.ranking-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
  line-height: 1;
  min-width: 32px;
}

.ranking-item img {
  width: 64px;
  height: 84px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.ranking-info {
  min-width: 0;
}

.ranking-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.ranking-reason {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rankings-links {
  max-width: var(--container-width);
  margin: 24px auto 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.rankings-links .btn {
  min-height: 40px;
  padding: 8px 20px;
  font-size: 14px;
}

/* 阅读指南入口 */
.guide-entry-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.guide-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 28px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.guide-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.guide-card-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-link);
}

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

/* 长尾推荐预告 */
.longtail-preview-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 48px 24px;
}

.topic-cards {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.topic-card {
  display: flex;
  gap: 20px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.topic-card img {
  width: 160px;
  height: 200px;
  object-fit: cover;
  flex-shrink: 0;
}

.topic-info {
  padding: 20px 20px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}

.topic-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

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

/* 版权与反馈 */
.copyright-feedback-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.feedback-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 760px;
  margin: 0;
}

/* ============================================================
   Pages — 分类页（categories）
   ============================================================ */

/* 分类页布局：侧栏在左，主内容在右 */
.layout-shell.sidebar-left {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

/* 分类树侧栏 */
.categories-tree {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.categories-tree h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.tree-list li {
  margin-bottom: 4px;
}

.tree-list a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.tree-list a:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

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

/* 作品网格 */
.works-grid {
  min-width: 0;
}

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

.category-section h2 {
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  scroll-margin-top: calc(var(--header-height) + 24px);
}

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

.work-card {
  display: flex;
  gap: 14px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.work-cover {
  width: 88px;
  height: 118px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.work-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.work-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.work-status {
  font-size: 13px;
  color: var(--color-text-light);
}

/* 分类交叉链接 */
.category-cross-links {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 20px 24px;
  margin-top: 32px;
}

.category-cross-links p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

.category-cross-links a {
  font-weight: 600;
  margin-right: 16px;
}

/* ============================================================
   Pages — 阅读指南页（guide）
   ============================================================ */

.guide-section {
  margin-bottom: 48px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

/* 内联图片 */
.content-media-inline {
  margin-bottom: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

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

.guide-step {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 24px;
  position: relative;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-accent);
  border-radius: 50%;
  margin-bottom: 14px;
}

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

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

.step-desc a {
  font-weight: 500;
}

/* 追更技巧 */
.tips-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.guide-tip {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
}

.tip-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-base);
}

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

.faq-question::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform var(--transition-base);
}

.faq-item[open] .faq-question {
  background-color: var(--color-bg);
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* 相关阅读 */
.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.related-card {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.related-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.related-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 版权说明 */
.guide-copyright {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px;
}

.copyright-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* ============================================================
   Pages — 恋爱漫画推荐页（romance）
   ============================================================ */

.recommendation-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.recommendation-list h2 {
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.work-item {
  display: flex;
  gap: 24px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.work-item .work-cover {
  width: 132px;
  height: 176px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.work-item .work-info {
  flex: 1;
  gap: 8px;
}

.work-item .work-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.work-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.work-reason,
.work-audience {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 4px;
}

.work-reason strong,
.work-audience strong {
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 4px;
}

/* 推荐说明 */
.recommendation-notes {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.recommendation-notes h2 {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.recommendation-notes p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.recommendation-notes p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Pages — 热血漫画推荐页（action）
   ============================================================ */

.recommendation-list .section-title {
  margin-bottom: 4px;
}

.recommendation-list .section-desc {
  margin-bottom: 24px;
}

.work-entry {
  display: flex;
  gap: 24px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.work-media {
  flex-shrink: 0;
}

.work-media img {
  width: 132px;
  height: 176px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.work-entry .work-info {
  flex: 1;
  gap: 8px;
}

.work-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.work-entry .work-desc {
  margin-bottom: 8px;
}

.work-audience {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.work-audience strong {
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 4px;
}

/* 看点分析 */
.analysis-section {
  margin-top: 48px;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.analysis-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 24px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.analysis-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.analysis-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.analysis-note {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-top: 24px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.analysis-note a {
  font-weight: 600;
  margin-right: 12px;
}

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-section {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

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

.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: #FFFFFF;
  transition: background-color var(--transition-base);
}

.error-link:hover {
  background-color: var(--color-primary-light);
  color: #FFFFFF;
}

.error-link:last-child {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.error-link:last-child:hover {
  border-color: var(--color-primary);
}

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

/* 桌面 ≥1024px：默认样式已覆盖 */

/* 平板 768–1023px */
@media (max-width: 1023px) {

  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-title {
    font-size: 28px;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 24px;
  }

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

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

}

/* 手机 <768px */
@media (max-width: 767px) {

  /* 页头 */
  .header-inner {
    padding: 0 16px;
    min-height: var(--header-height);
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
    width: 100%;
    flex-basis: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 8px 0 16px;
    gap: 0;
  }

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

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

  .nav-list a {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  /* 主容器 */
  .inner-main {
    padding: 24px 16px 40px;
  }

  /* 面包屑 */
  .breadcrumb {
    font-size: 13px;
    margin-bottom: 16px;
  }

  /* 页面标题 */
  .page-title {
    font-size: 26px;
  }

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

  /* 首页 hero */
  .hero-section {
    padding: 40px 16px;
  }

  .hero-title {
    font-size: 24px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
  }

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

  /* 首页各区块 */
  .categories-nav-section,
  .latest-updates-section,
  .rankings-section,
  .guide-entry-section,
  .longtail-preview-section,
  .copyright-feedback-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .category-tags {
    gap: 8px;
  }

  .category-tags .tag {
    padding: 6px 14px;
    font-size: 13px;
  }

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

  .update-date {
    width: 56px;
    font-size: 12px;
  }

  .update-content img {
    width: 64px;
    height: 84px;
  }

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

  .ranking-item {
    padding: 16px;
  }

  .guide-cards,
  .topic-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .topic-card img {
    width: 100%;
    height: 180px;
  }

  .topic-info {
    padding: 16px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    text-align: center;
  }

  /* 分类页 */
  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .categories-tree {
    position: static;
    padding: 16px;
  }

  .categories-tree h2 {
    font-size: 16px;
    margin-bottom: 12px;
  }

  .tree-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
  }

  .tree-list a {
    padding: 8px 10px;
    font-size: 14px;
  }

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

  .work-card {
    padding: 12px;
  }

  .work-cover {
    width: 80px;
    height: 106px;
  }

  /* 指南页 */
  .steps-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .related-links {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .content-media-inline img {
    max-height: 200px;
  }

  /* 推荐页 */
  .work-item,
  .work-entry {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }

  .work-item .work-cover,
  .work-media img {
    width: 100%;
    height: 200px;
  }

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

  .analysis-item {
    padding: 16px;
  }

  .analysis-note {
    padding: 16px;
  }

  /* 404 */
  .error-main {
    padding: 48px 16px;
  }

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

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

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

  .error-link {
    width: 100%;
  }

}

/* 小屏手机 <390px */
@media (max-width: 389px) {

  .brand-name {
    font-size: 19px;
  }

  .brand-slogan {
    font-size: 11px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .update-content {
    flex-direction: column;
  }

  .update-content img {
    width: 100%;
    height: 140px;
  }

  .update-date {
    width: auto;
  }

}