/* ==========================================================================
   漫蛙漫 - 全站样式表
   版本: 1.0
   说明: 本样式表服务于漫蛙漫漫画阅读站全部页面，包含首页、题材分类、
         阅读指南、追更技巧、最近更新及404页面。
   ========================================================================== */

/* ==========================================================================
   1. Base - 基础变量、重置与全局元素
   ========================================================================== */

:root {
  --color-primary: #4CAF50;
  --color-primary-light: #E8F5E9;
  --color-primary-dark: #388E3C;
  --color-bg: #F5F5F5;
  --color-bg-warm: #FAFAF7;
  --color-white: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-border: #E0E0E0;
  --color-border-light: #EEEEEE;

  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --line-height-base: 1.8;
  --line-height-heading: 1.4;

  --container-width: 1200px;
  --container-padding: 24px;
  --border-radius: 8px;
  --border-radius-small: 4px;
  --transition-duration: 0.3s;
}

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

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

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 28px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin-bottom: 12px;
}

/* 通用容器 */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ==========================================================================
   2. Layout - 页头、页脚、主容器与网格布局
   ========================================================================== */

/* ---------- 页头 ---------- */

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  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;
  height: 64px;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

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

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

/* 导航 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-text-light);
  border-radius: var(--border-radius-small);
  transition: all var(--transition-duration) ease;
}

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

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

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-small);
  cursor: pointer;
  gap: 5px;
}

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

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  margin-top: 60px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.7;
  max-width: 420px;
}

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

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

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

.footer-nav-list li a {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border-light);
  padding: 16px var(--container-padding);
  text-align: center;
}

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

/* ---------- 内页通用布局 ---------- */

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

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

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

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

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

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

/* 页面标题区 */
.page-header {
  padding: 16px 0 28px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

/* 区块标题 */
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

/* 页面双栏布局（主内容 + 侧栏） */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
  padding-bottom: 40px;
}

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

.sidebar {
  min-width: 0;
}

/* 侧栏卡片 */
.sidebar-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border-light);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

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

.sidebar-list li a {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  display: block;
  padding: 4px 0;
  transition: color var(--transition-duration) ease, padding-left var(--transition-duration) ease;
}

.sidebar-list li a:hover {
  color: var(--color-primary-dark);
  padding-left: 4px;
}

/* ==========================================================================
   3. Components - 通用组件：按钮、标签、卡片、列表等
   ========================================================================== */

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--border-radius-small);
  cursor: pointer;
  transition: all var(--transition-duration) ease;
  border: 1px solid transparent;
}

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

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

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

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

/* ---------- 标签 ---------- */

.tag-label {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  margin-right: 8px;
}

.hero-tag,
.genre-tag {
  display: inline-block;
  padding: 6px 14px;
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition-duration) ease;
  cursor: pointer;
}

.hero-tag:hover,
.genre-tag:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* ---------- 更新列表 ---------- */

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

.update-date {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-duration) ease;
}

.update-item:last-child {
  border-bottom: none;
}

.update-item:hover {
  background-color: var(--color-bg-warm);
}

.update-item img {
  width: 64px;
  height: 88px;
  object-fit: cover;
  border-radius: var(--border-radius-small);
  flex-shrink: 0;
}

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

.update-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.update-status {
  font-size: 12px;
  color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 12px;
  flex-shrink: 0;
}

/* 状态变体 */
.status-new {
  color: #E65100;
  background-color: #FFF3E0;
}

.status-continue {
  color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
}

.status-older {
  color: var(--color-text-lighter);
  background-color: var(--color-bg);
}

/* ---------- 榜单 ---------- */

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.ranking-item:last-child {
  border-bottom: none;
}

.ranking-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  width: 32px;
  text-align: center;
  flex-shrink: 0;
}

.ranking-item img {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--border-radius-small);
  flex-shrink: 0;
}

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

.ranking-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.ranking-reason {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 区块头部 ---------- */

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.section-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  max-width: 640px;
}

.section-more {
  display: inline-block;
  margin-top: 16px;
  font-size: var(--font-size-small);
  color: var(--color-primary-dark);
  font-weight: 500;
}

.section-more:hover {
  text-decoration: underline;
}

/* ---------- 图片容器 ---------- */

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--color-text-lighter);
  text-align: center;
  padding: 8px 0;
  line-height: 1.6;
}

/* ==========================================================================
   4. Pages - 各页面专属样式
   ========================================================================== */

/* ---------- 首页 ---------- */

.site-home {
  background-color: var(--color-bg);
}

/* Hero 区域 */
.hero-section {
  background-color: var(--color-primary-light);
  border-bottom: 1px solid var(--color-border-light);
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 440px;
  gap: 40px;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

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

.hero-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.hero-subtitle {
  font-size: var(--font-size-large);
  color: var(--color-text-light);
  margin-bottom: 20px;
  max-width: 480px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.hero-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-figure {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-figure img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

/* 题材分类带 */
.genres-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.genres-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.genre-tag {
  padding: 8px 20px;
  font-size: 15px;
}

/* 最近更新 */
.updates-section {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.updates-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.update-groups {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

/* 人气榜单 */
.ranking-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

/* 指南入口 */
.guide-section {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.guide-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

.guide-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.guide-card {
  background-color: var(--color-bg-warm);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  transition: box-shadow var(--transition-duration) ease, border-color var(--transition-duration) ease;
}

.guide-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.1);
}

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

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

.guide-link {
  font-size: var(--font-size-small);
  color: var(--color-primary-dark);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.guide-link:hover {
  text-decoration: underline;
}

/* 编辑短评 */
.editorial-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding);
}

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

.editorial-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: box-shadow var(--transition-duration) ease;
}

.editorial-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

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

.editorial-content {
  padding: 20px;
}

.editorial-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.editorial-title a {
  color: var(--color-text);
}

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

.editorial-text {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.editorial-text:last-child {
  margin-bottom: 0;
}

/* 版权与反馈说明 */
.notice-section {
  background-color: var(--color-primary-light);
  border-top: 1px solid var(--color-border-light);
}

.notice-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px var(--container-padding);
}

.notice-content {
  max-width: 720px;
}

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

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

.notice-content p:last-child {
  margin-bottom: 0;
}

/* ---------- 题材分类页 ---------- */

.page-genres {
  background-color: var(--color-bg);
}

.category-index {
  padding-bottom: 40px;
}

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

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

.category-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

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

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

.category-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  padding: 16px 16px 4px;
}

.category-desc {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  padding: 0 16px 16px;
  line-height: 1.6;
  margin: 0;
}

.category-detail {
  padding-bottom: 40px;
}

.category-detail-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.detail-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.detail-text {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.7;
  margin: 0;
}

/* 相关推荐 */
.related-links {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 40px;
}

.related-links .section-title {
  margin-bottom: 12px;
}

.related-links p {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.related-links p a {
  margin-right: 16px;
  font-weight: 500;
}

/* ---------- 阅读指南页 ---------- */

.page-guide {
  background-color: var(--color-bg);
}

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

.guide-content .guide-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 24px;
}

.guide-content .guide-section h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-left: 14px;
  position: relative;
}

.guide-content .guide-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.guide-content .guide-section p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.guide-content .guide-section p a {
  color: var(--color-primary-dark);
  font-weight: 500;
}

.guide-figure {
  margin: 20px 0;
}

.guide-figure img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.guide-related {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 24px;
}

.guide-related h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

.guide-related ul li {
  margin-bottom: 10px;
}

.guide-related ul li a {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  display: block;
  padding: 4px 0;
  transition: color var(--transition-duration) ease, padding-left var(--transition-duration) ease;
}

.guide-related ul li a:hover {
  color: var(--color-primary-dark);
  padding-left: 4px;
}

/* ---------- 追更技巧页 ---------- */

.page-tip {
  background-color: var(--color-bg);
}

.tip-overview {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 24px;
}

.tip-overview p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.tip-overview p:last-child {
  margin-bottom: 0;
}

.tip-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 24px;
}

.tip-section > p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.tip-item {
  background-color: var(--color-bg-warm);
  border-radius: var(--border-radius-small);
  padding: 20px;
  margin-bottom: 16px;
}

.tip-item:last-child {
  margin-bottom: 0;
}

.tip-item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.tip-item p {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.7;
  margin: 0;
}

.tip-figure {
  margin: 20px 0 0;
}

.tip-figure img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

/* ---------- 最近更新页 ---------- */

.page-update {
  background-color: var(--color-bg);
}

.update-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 24px;
}

.update-section .update-group {
  margin-bottom: 28px;
}

.update-section .update-group:last-child {
  margin-bottom: 0;
}

.update-cover {
  flex-shrink: 0;
}

.update-cover img {
  width: 64px;
  height: 88px;
  object-fit: cover;
  border-radius: var(--border-radius-small);
}

.update-meta {
  font-size: 13px;
  color: var(--color-text-lighter);
  margin-bottom: 4px;
}

.update-chapter {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  line-height: 1.6;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 24px;
}

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

.status-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.status-item:last-child {
  border-bottom: none;
}

.status-badge {
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 12px;
  flex-shrink: 0;
}

.status-today {
  color: #E65100;
  background-color: #FFF3E0;
}

.status-yesterday {
  color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
}

.status-note {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.status-note a {
  color: var(--color-primary-dark);
  font-weight: 500;
}

.related-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.related-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.related-list li a {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
  transition: color var(--transition-duration) ease, padding-left var(--transition-duration) ease;
}

.related-list li a:hover {
  color: var(--color-primary-dark);
  padding-left: 4px;
}

/* ---------- 404 页面 ---------- */

.site-error {
  background-color: var(--color-bg);
}

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px var(--container-padding);
}

.error-content {
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.error-content h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 8px;
}

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

.error-back-btn {
  display: inline-block;
  padding: 10px 28px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius-small);
  font-size: 15px;
  font-weight: 500;
  transition: background-color var(--transition-duration) ease;
  margin-bottom: 32px;
}

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

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

.error-links a {
  font-size: var(--font-size-small);
  color: var(--color-text-light);
}

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

/* ==========================================================================
   5. Responsive - 响应式断点适配
   ========================================================================== */

/* ---------- 平板及以下 (≤1024px) ---------- */

@media (max-width: 1024px) {

  .hero-section {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 24px;
  }

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

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

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 24px;
  }

}

/* ---------- 移动端 (≤768px) ---------- */

@media (max-width: 768px) {

  :root {
    --container-padding: 16px;
  }

  .header-inner {
    height: 56px;
  }

  .brand-name {
    font-size: 20px;
  }

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

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06);
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 4px;
    max-height: calc(100vh - 56px);
    overflow-y: auto;
  }

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

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

  /* 首页 Hero */
  .hero-section {
    grid-template-columns: 1fr;
    padding: 32px var(--container-padding);
    gap: 24px;
  }

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

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .hero-figure {
    order: 2;
  }

  .hero-figure img {
    max-width: 100%;
  }

  /* 首页各区块 */
  .genres-section,
  .updates-section,
  .ranking-section,
  .guide-section,
  .editorial-section,
  .notice-section {
    padding: 32px var(--container-padding);
  }

  .update-groups {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .editorial-item img {
    height: 160px;
  }

  /* 内页 */
  .page-header {
    padding: 12px 0 20px;
  }

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

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

  .sidebar {
    order: 2;
  }

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

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

  /* 更新列表 */
  .update-item {
    gap: 12px;
  }

  .update-item img,
  .update-cover img {
    width: 56px;
    height: 76px;
  }

  .update-title {
    font-size: 14px;
  }

  .update-status {
    font-size: 11px;
    padding: 2px 8px;
  }

  /* 榜单 */
  .ranking-item {
    gap: 12px;
  }

  .ranking-item img {
    width: 40px;
    height: 54px;
  }

  .ranking-number {
    font-size: 18px;
    width: 24px;
  }

  .ranking-reason {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* 阅读指南 */
  .guide-content .guide-section {
    padding: 20px;
  }

  /* 追更技巧 */
  .tip-section,
  .tip-overview {
    padding: 20px;
  }

  .tip-item {
    padding: 16px;
  }

  /* 最近更新 */
  .update-section,
  .status-section {
    padding: 20px;
  }

  .update-chapter {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

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

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

  .footer-bottom {
    padding: 12px var(--container-padding);
  }

  /* 404 */
  .error-main {
    padding: 48px var(--container-padding);
  }

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

}

/* ---------- 小屏手机 (≤390px) ---------- */

@media (max-width: 390px) {

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

  .btn {
    width: 100%;
  }

  .hero-tags {
    gap: 6px;
  }

  .hero-tag,
  .genre-tag {
    padding: 5px 12px;
    font-size: 13px;
  }

  .ranking-item {
    flex-wrap: wrap;
  }

  .ranking-info {
    min-width: calc(100% - 80px);
  }

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

  .error-links {
    flex-direction: column;
    gap: 12px;
  }

}

/* ==========================================================================
   6. 动效与增强（不影响初始可见性）
   ========================================================================== */

/* 卡片悬停轻量动效 */
.category-card,
.guide-card,
.editorial-item {
  transition: box-shadow var(--transition-duration) ease,
    transform var(--transition-duration) ease,
    border-color var(--transition-duration) ease;
}

/* 导航链接动效 */
.nav-list li a {
  transition: background-color var(--transition-duration) ease,
    color var(--transition-duration) ease;
}

/* 汉堡按钮动效 */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 滚动出现动画（仅作为增强，不影响初始可见性） */
@media (prefers-reduced-motion: no-preference) {

  .category-card,
  .guide-card,
  .editorial-item,
  .update-group,
  .ranking-item,
  .tip-item,
  .detail-item {
    animation: fadeInUp 0.5s ease both;
  }

  .category-card:nth-child(2),
  .guide-card:nth-child(2),
  .editorial-item:nth-child(2),
  .update-group:nth-child(2),
  .ranking-item:nth-child(2),
  .tip-item:nth-child(2) {
    animation-delay: 0.1s;
  }

  .category-card:nth-child(3),
  .editorial-item:nth-child(3),
  .update-group:nth-child(3),
  .ranking-item:nth-child(3),
  .tip-item:nth-child(3) {
    animation-delay: 0.2s;
  }

  .category-card:nth-child(4),
  .ranking-item:nth-child(4),
  .tip-item:nth-child(4) {
    animation-delay: 0.3s;
  }

  .category-card:nth-child(5),
  .ranking-item:nth-child(5),
  .tip-item:nth-child(5) {
    animation-delay: 0.4s;
  }

  .category-card:nth-child(6),
  .ranking-item:nth-child(6) {
    animation-delay: 0.5s;
  }

}

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

/* 尊重用户减少动效偏好 */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

}