/* ============================================================
   BASE — 全局基础样式
   ============================================================ */
:root {
  --color-primary: #4A90E2;
  --color-primary-dark: #3A7BC8;
  --color-primary-light: #E8F1FB;
  --color-bg: #F5F5F5;
  --color-surface: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-border: #E5E5E5;
  --color-rank-1: #F5A623;
  --color-rank-2: #B8B8B8;
  --color-rank-3: #C98A5E;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --container-width: 1200px;
  --header-height: 68px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  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-fast);
}

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

/* 跳转链接 */
.skip-nav,
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: top var(--transition-fast);
}

.skip-nav:focus,
.skip-link:focus {
  top: 12px;
}

/* ============================================================
   LAYOUT — 全站布局骨架
   ============================================================ */

/* 站点页头 */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* 品牌 Logo */
.brand-logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

.brand-tagline {
  font-size: 12px;
  color: var(--color-text-lighter);
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

.nav-list li a.is-current {
  background: var(--color-primary);
  color: #fff;
  font-weight: 500;
}

/* 移动端汉堡按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.nav-toggle:hover {
  background: var(--color-primary-light);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* 站点主体 */
.site-main {
  flex: 1;
  width: 100%;
}

/* 首页主体 */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 内页主体 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 20px 0 8px;
  font-size: 14px;
  color: var(--color-text-lighter);
}

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

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

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

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

/* 页面标题区 */
.page-header {
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

/* 站点页脚 */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: 60px;
}

.footer-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 20px 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-col ul li {
  margin-bottom: 10px;
}

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

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

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

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

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

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

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

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

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* 区块标题 */
.section-heading {
  margin-bottom: 24px;
}

.section-heading h2,
.section-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ============================================================
   PAGES — 首页
   ============================================================ */

/* 首屏 Hero */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 64px;
}

.hero-copy h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-copy > p {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 480px;
}

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

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-figure img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* 题材分类标签 */
.category-tags {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.tag-chip {
  display: inline-block;
  padding: 10px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 15px;
  color: var(--color-text);
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  min-height: 40px;
  line-height: 1.4;
}

.tag-chip:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* 最近更新 */
.recent-updates {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.comic-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.comic-card a {
  display: block;
}

.comic-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.comic-card h3 {
  font-size: 16px;
  font-weight: 500;
  padding: 14px 16px 4px;
  margin-bottom: 0;
}

.card-meta {
  font-size: 13px;
  color: var(--color-text-lighter);
  padding: 0 16px 16px;
  margin-bottom: 0;
}

/* 人气榜单 */
.ranking-section {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.ranking-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.ranking-item {
  display: flex;
  gap: 16px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.ranking-item:hover {
  box-shadow: var(--shadow-md);
}

.rank-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-lighter);
  min-width: 36px;
  text-align: center;
  line-height: 1.2;
}

.ranking-item:nth-child(1) .rank-num {
  color: var(--color-rank-1);
}

.ranking-item:nth-child(2) .rank-num {
  color: var(--color-rank-2);
}

.ranking-item:nth-child(3) .rank-num {
  color: var(--color-rank-3);
}

.rank-info h3 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 6px;
}

.rank-info p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* 阅读指南入口 */
.guide-entry {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.guide-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.guide-card:hover {
  box-shadow: var(--shadow-md);
}

.guide-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.guide-card a {
  font-size: 14px;
  font-weight: 500;
}

/* 专题推荐 */
.feature-topic {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.topic-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.topic-card a {
  display: block;
}

.topic-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.topic-card h3 {
  font-size: 18px;
  font-weight: 600;
  padding: 16px 20px 4px;
  margin-bottom: 0;
}

.topic-card p {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 0 20px 20px;
  margin-bottom: 0;
}

/* ============================================================
   PAGES — 题材分类页 (toc.html)
   ============================================================ */

.category-grid {
  margin-bottom: 48px;
}

.category-grid-title {
  margin-bottom: 24px;
}

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

.category-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.category-card-media {
  overflow: hidden;
}

.category-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.category-card-body {
  padding: 20px;
}

.category-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.category-card-body p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.6;
}

.category-example {
  font-size: 13px;
  color: var(--color-text-lighter);
}

.category-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 500;
}

/* 分类说明 */
.category-notes {
  padding-top: 8px;
}

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

.category-note-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.category-note-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.category-note-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 阅读指南页 (guide.html)
   ============================================================ */

.guide-section {
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.guide-section:last-of-type {
  border-bottom: none;
}

.guide-section h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 4px solid var(--color-primary);
}

.guide-section p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 14px;
  max-width: 760px;
}

.guide-media {
  margin: 24px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 760px;
}

.guide-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* FAQ 列表 */
.faq-list {
  max-width: 760px;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--transition-fast);
}

.faq-item summary:hover {
  background: var(--color-primary-light);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

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

.faq-item .faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 相关阅读推荐 */
.guide-links {
  padding-top: 8px;
}

.guide-links h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.link-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: block;
}

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

.link-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.link-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 热血漫画推荐 (hotblood.html)
   ============================================================ */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.article-body {
  margin-bottom: 40px;
}

.article-body p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* 推荐列表 */
.recommend-list h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
}

.recommend-item {
  display: flex;
  gap: 20px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.recommend-item:hover {
  box-shadow: var(--shadow-md);
}

.recommend-media {
  flex-shrink: 0;
  width: 180px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.recommend-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

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

.recommend-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.recommend-info p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 6px;
}

/* 为什么推荐 */
.why-recommend {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.why-recommend h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
}

.why-recommend p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

/* 侧栏 */
.sidebar {
  min-width: 0;
}

.sidebar-box {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

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

.sidebar-box ul li {
  margin-bottom: 10px;
}

.sidebar-box ul li:last-child {
  margin-bottom: 0;
}

.sidebar-box ul li a {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  display: block;
  padding: 4px 0;
}

.sidebar-box ul li a:hover {
  color: var(--color-primary);
}

/* ============================================================
   PAGES — 恋爱漫画推荐 (romance.html)
   ============================================================ */

/* 正文区 */
.article-body {
  max-width: 760px;
  margin-bottom: 40px;
}

.article-body p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.article-media {
  margin: 28px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 760px;
}

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

.article-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-lighter);
  background: var(--color-surface);
  text-align: center;
}

/* 推荐列表 */
.recommend-list {
  max-width: 760px;
}

.recommend-list h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
}

.recommend-item {
  display: flex;
  gap: 20px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.recommend-item:hover {
  box-shadow: var(--shadow-md);
}

.recommend-item > img {
  width: 160px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

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

.recommend-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.recommend-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

/* 相关链接 */
.related-links {
  margin-top: 48px;
  padding: 32px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.related-links h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.related-links ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.related-links ul li a {
  font-size: 14px;
  color: var(--color-text-light);
  display: inline-block;
  padding: 6px 0;
}

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

/* ============================================================
   PAGES — 404 页面
   ============================================================ */

.error-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  text-align: center;
  max-width: var(--container-width);
  margin: 0 auto;
}

.error-panel {
  max-width: 560px;
}

.error-code {
  font-size: 96px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.error-btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  min-height: 44px;
  line-height: 1.4;
  transition: background var(--transition-fast);
}

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

.error-links {
  margin-top: 48px;
  text-align: left;
}

.error-links h2 {
  font-size: 18px;
  margin-bottom: 16px;
  text-align: center;
}

.error-links ul {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

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

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

/* ============================================================
   RESPONSIVE — 响应式适配
   ============================================================ */

/* 平板及以下 */
@media (max-width: 1024px) {
  .category-grid-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .page-layout {
    grid-template-columns: 1fr;
  }

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

  .sidebar-box {
    margin-bottom: 0;
  }
}

/* 手机端 */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-tagline {
    display: none;
  }

  /* 汉堡菜单 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    gap: 0;
  }

  .nav-list li a {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-md);
  }

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

  .site-nav.is-open {
    max-height: 400px;
  }

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

  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0 40px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }

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

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

  .btn {
    width: 100%;
  }

  .category-tags,
  .recent-updates,
  .ranking-section,
  .guide-entry,
  .feature-topic {
    padding: 32px 0;
  }

  .tag-list {
    gap: 8px;
  }

  .tag-chip {
    padding: 8px 16px;
    font-size: 14px;
  }

  .update-scroll {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .comic-card img {
    height: 160px;
  }

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

  .ranking-item {
    padding: 16px;
  }

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

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

  /* 内页 */
  .inner-main {
    padding: 0 16px 40px;
  }

  .page-header {
    padding: 20px 0;
    margin-bottom: 24px;
  }

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

  .breadcrumb {
    padding-top: 16px;
  }

  /* 分类页 */
  .category-grid-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .category-notes-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .category-card-img {
    height: 200px;
  }

  /* 指南页 */
  .guide-section {
    margin-bottom: 32px;
    padding-bottom: 28px;
  }

  .guide-section h2 {
    font-size: 20px;
  }

  .guide-media img {
    height: 200px;
  }

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

  /* 热血页 */
  .page-layout {
    gap: 32px;
  }

  .recommend-item {
    flex-direction: column;
    gap: 16px;
  }

  .recommend-media {
    width: 100%;
  }

  .recommend-media img {
    height: 200px;
    width: 100%;
  }

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

  /* 恋爱页 */
  .recommend-item {
    flex-direction: column;
  }

  .recommend-item > img {
    width: 100%;
    height: 240px;
  }

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

  .related-links {
    padding: 24px;
  }

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

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

  .footer-bottom {
    padding: 16px;
  }

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

  .error-code {
    font-size: 72px;
  }

  .error-links ul {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
}

/* 超小屏幕 */
@media (max-width: 390px) {
  .update-scroll {
    grid-template-columns: 1fr;
  }

  .comic-card img {
    height: 200px;
  }

  .tag-chip {
    padding: 8px 14px;
    font-size: 13px;
  }

  .recommend-media img,
  .recommend-item > img {
    height: 180px;
  }
}

/* ============================================================
   INTERACTION — 轻量交互增强
   ============================================================ */

/* 滚动出现动画（不影响初始可见性） */
@media (prefers-reduced-motion: no-preference) {
  .comic-card,
  .ranking-item,
  .guide-card,
  .topic-card,
  .category-card,
  .category-note-card,
  .link-card,
  .recommend-item,
  .sidebar-box {
    animation: fadeInUp 0.5s ease both;
  }

  .comic-card:nth-child(2),
  .ranking-item:nth-child(2),
  .guide-card:nth-child(2),
  .topic-card:nth-child(2),
  .category-card:nth-child(2),
  .category-note-card:nth-child(2),
  .link-card:nth-child(2),
  .recommend-item:nth-child(2),
  .sidebar-box:nth-child(2) {
    animation-delay: 0.08s;
  }

  .comic-card:nth-child(3),
  .ranking-item:nth-child(3),
  .category-card:nth-child(3),
  .category-note-card:nth-child(3),
  .link-card:nth-child(3),
  .recommend-item:nth-child(3) {
    animation-delay: 0.16s;
  }

  .comic-card:nth-child(4),
  .ranking-item:nth-child(4),
  .category-card:nth-child(4),
  .category-note-card:nth-child(4),
  .recommend-item:nth-child(4) {
    animation-delay: 0.24s;
  }

  .ranking-item:nth-child(5),
  .category-card:nth-child(5),
  .category-note-card:nth-child(5),
  .recommend-item:nth-child(5) {
    animation-delay: 0.32s;
  }

  .category-card:nth-child(6),
  .category-note-card:nth-child(6) {
    animation-delay: 0.4s;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}