/* ==========================================================
   base — 变量、重置、全局基础
   ========================================================== */
:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #2c3e50;
  --color-text-light: #5d6d7e;
  --color-primary: #e74c3c;
  --color-secondary: #3498db;
  --color-accent: #f39c12;
  --color-border: #e3e6ea;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 3px 8px rgba(0, 0, 0, 0.1);
  --container-width: 1200px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --header-height: 64px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-sm);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

figure {
  margin: 0;
}

/* ==========================================================
   layout — 全站骨架、容器、页头、页脚
   ========================================================== */

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

.site-header {
  background-color: var(--color-surface);
  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(--space-md);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-brand {
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

.site-brand a {
  color: var(--color-text);
}

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

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-list a {
  display: inline-block;
  padding: 8px 4px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-list a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  margin-top: var(--space-xl);
}

.site-footer p {
  margin-bottom: 0;
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
}

.footer-nav {
  margin-top: var(--space-xs);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

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

/* 内页基础容器 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) 0;
  width: 100%;
}

.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  color: #aab2bd;
}

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

/* 页面标题区 */
.page-header {
  margin-bottom: var(--space-lg);
}

.page-title {
  font-size: 1.875rem;
  margin-bottom: var(--space-xs);
}

.page-description {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 720px;
}

/* ==========================================================
   components — 通用组件
   ========================================================== */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-primary);
  transition: background-color 0.2s ease, transform 0.2s ease;
  min-height: 44px;
}

.btn:hover {
  background-color: #c0392b;
  border-color: #c0392b;
  color: #fff;
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background-color: #2980b9;
  border-color: #2980b9;
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-text);
  color: var(--color-text);
}

.btn-outline:hover {
  background-color: var(--color-text);
  color: #fff;
  border-color: var(--color-text);
}

.btn-error {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background-color: var(--color-text);
  border-radius: var(--radius-md);
  min-height: 44px;
  transition: background-color 0.2s ease;
}

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

/* ==========================================================
   components — 首页模块
   ========================================================== */

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
}

/* 首屏 */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  padding: var(--space-xl) 0;
}

.hero-copy h1 {
  font-size: 2.25rem;
  margin-bottom: var(--space-md);
}

.hero-copy p {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

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

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

/* 题材分类导航带 */
.genre-strip {
  padding: var(--space-lg) 0;
}

.genre-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.genre-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 12px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
  min-height: 44px;
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease;
}

.genre-list a:hover {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* 最近更新 */
.recent-updates {
  padding: var(--space-lg) 0;
}

.update-group {
  margin-bottom: var(--space-lg);
}

.update-group h3 {
  font-size: 1.125rem;
  color: var(--color-text);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-md);
}

.update-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.update-list li {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}

.update-list li:hover {
  box-shadow: var(--shadow-md);
}

.update-list figure {
  overflow: hidden;
}

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

.update-info {
  padding: var(--space-sm) var(--space-md);
}

.update-title {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: var(--space-xs);
}

.update-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* 人气榜单 */
.popular-rank {
  padding: var(--space-lg) 0;
}

.rank-list {
  display: grid;
  gap: var(--space-sm);
}

.rank-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  background-color: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.rank-num {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
  min-width: 32px;
  text-align: center;
}

.rank-name {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.rank-reason {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* 阅读指南入口 */
.guide-entry {
  padding: var(--space-lg) 0;
}

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

.guide-card {
  background-color: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-secondary);
  box-shadow: var(--shadow-sm);
}

.guide-card h3 {
  margin-bottom: var(--space-xs);
}

.guide-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.guide-card a {
  font-weight: 600;
  font-size: 0.9375rem;
}

/* 长尾推荐预告 */
.topic-preview {
  padding: var(--space-lg) 0;
}

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

.topic-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}

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

.topic-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.topic-card h3 {
  padding: var(--space-md) var(--space-md) 0;
}

.topic-card p {
  padding: 0 var(--space-md);
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

.topic-card a {
  display: inline-block;
  margin: var(--space-xs) var(--space-md) var(--space-md);
  font-weight: 600;
  font-size: 0.9375rem;
}

/* ==========================================================
   components — 内页通用模块
   ========================================================== */

/* 主内容 + 右侧栏布局 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-xl);
  align-items: start;
}

.page-layout .main-content {
  min-width: 0;
}

.page-layout .sidebar {
  min-width: 0;
}

/* 侧栏 */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.sidebar-block,
.sidebar-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.sidebar-block h2,
.sidebar-card h2,
.sidebar-card h3 {
  font-size: 1.0625rem;
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-sm);
}

.sidebar-links li {
  margin-bottom: var(--space-xs);
}

.sidebar-links a {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  display: block;
  padding: 6px 0;
}

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

/* ==========================================================
   pages — 分类页
   ========================================================== */

.category-list {
  margin-bottom: var(--space-xl);
}

.category-list > p {
  color: var(--color-text-light);
}

.category-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.category-media {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.category-info h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.category-info p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.category-works {
  margin-bottom: var(--space-xl);
}

.category-works > p {
  color: var(--color-text-light);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.work-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.work-card h3 {
  padding: var(--space-sm) var(--space-md) 0;
  font-size: 1rem;
}

.work-card p {
  padding: 0 var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

/* ==========================================================
   pages — 阅读指南页
   ========================================================== */

.content-section {
  margin-bottom: var(--space-xl);
}

.content-section p {
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.guide-figure {
  margin: var(--space-md) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.guide-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-surface);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.related-links {
  background-color: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-top: var(--space-lg);
}

.related-links p {
  margin-bottom: var(--space-xs);
}

.related-links a {
  font-weight: 600;
  margin-right: var(--space-md);
}

/* FAQ 展开 */
.faq-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  padding: var(--space-md);
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-md);
  list-style: none;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-text-light);
}

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

.faq-item summary + p {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-text-light);
}

/* ==========================================================
   pages — 热血漫画推荐页
   ========================================================== */

.recommend-section {
  margin-bottom: var(--space-xl);
}

.recommend-section > p {
  color: var(--color-text-light);
}

.recommend-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.recommend-cover {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.recommend-content h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.recommend-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.features-section {
  margin-bottom: var(--space-xl);
}

.features-section > p {
  color: var(--color-text-light);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.feature-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

.features-section > p:last-child {
  margin-top: var(--space-md);
}

.features-section > p a {
  font-weight: 600;
  margin-right: var(--space-md);
}

/* ==========================================================
   pages — 恋爱漫画推荐页
   ========================================================== */

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

.romance-recommend-list {
  margin-bottom: var(--space-xl);
}

.romance-recommend-list .section-intro {
  color: var(--color-text-light);
}

.recommend-media {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.recommend-info h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.recommend-info p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

.romance-analysis {
  margin-bottom: var(--space-xl);
}

.romance-analysis > p {
  color: var(--color-text-light);
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.analysis-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.analysis-item h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.analysis-item p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

.romance-analysis > p:last-child {
  margin-top: var(--space-md);
}

.romance-analysis > p a {
  font-weight: 600;
  margin-right: var(--space-md);
}

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

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
  width: 100%;
  text-align: center;
}

.error-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
}

.error-code {
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-section h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.error-desc {
  color: var(--color-text-light);
  max-width: 480px;
  margin-bottom: var(--space-lg);
}

.error-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.error-tip {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

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

/* 平板 */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .hero-copy p {
    max-width: 100%;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: var(--space-lg);
  }

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

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

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

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

/* 手机 */
@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: var(--header-height);
    flex-wrap: wrap;
    padding: var(--space-xs) var(--space-md);
  }

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: var(--space-sm) 0;
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 4px;
    font-size: 1rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-list a.is-current {
    border-bottom: none;
    border-left-color: var(--color-primary);
  }

  .site-main {
    padding-top: var(--space-sm);
  }

  .home-main,
  .inner-main,
  .layout-shell {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .hero-section {
    padding: var(--space-lg) 0;
  }

  .hero-copy h1 {
    font-size: 1.75rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
  }

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

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

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

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

  .page-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .page-layout .sidebar {
    order: 2;
  }

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

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

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

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

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

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

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

  .page-title {
    font-size: 1.5rem;
  }

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

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

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

/* 小屏手机 */
@media (max-width: 390px) {
  .genre-list {
    grid-template-columns: 1fr;
  }

  .genre-list a {
    justify-content: flex-start;
    padding-left: var(--space-md);
  }

  .rank-list li {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .rank-num {
    text-align: left;
  }

  .update-info {
    padding: var(--space-sm);
  }

  .topic-card p {
    padding: 0 var(--space-sm);
  }

  .topic-card a {
    margin-left: var(--space-sm);
    margin-right: var(--space-sm);
  }

  .sidebar-block,
  .sidebar-card {
    padding: var(--space-sm);
  }

  .related-links a {
    display: inline-block;
    margin-bottom: var(--space-xs);
    margin-right: var(--space-sm);
  }
}

/* ==========================================================
   motion — 动效增强（尊重系统偏好）
   ========================================================== */

@media (prefers-reduced-motion: no-preference) {
  .update-list li,
  .topic-card,
  .work-card,
  .recommend-item,
  .feature-card,
  .analysis-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .update-list li:hover,
  .topic-card:hover,
  .work-card:hover,
  .recommend-item:hover,
  .feature-card:hover,
  .analysis-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

  .genre-list a {
    transition: background-color 0.2s ease, color 0.2s ease,
      transform 0.2s ease, border-color 0.2s ease;
  }

  .genre-list a:hover {
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}