/* ============================================================
   漫蛙漫画 · 全站样式表
   结构分组：base / layout / components / pages / responsive
   ============================================================ */

/* ----------------------------------------------
   Base —— 重置、变量、字体、基础元素
   ---------------------------------------------- */
:root {
  --color-primary: #2B6CB0;
  --color-primary-dark: #1D4F8A;
  --color-primary-light: #E8F1FA;
  --color-bg: #F7FAFC;
  --color-text: #2D3748;
  --color-text-light: #A0AEC0;
  --color-accent: #DD6B20;
  --color-white: #ffffff;
  --color-border: #E2E8F0;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Roboto Mono', Menlo, Consolas, monospace;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(45, 55, 72, 0.08);
  --shadow-md: 0 4px 12px rgba(45, 55, 72, 0.1);
  --transition: 0.2s ease;
}

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

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

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

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

/* ----------------------------------------------
   Layout —— 全站骨架：页头、页脚、主容器、面包屑
   ---------------------------------------------- */

/* 页头 */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(45, 55, 72, 0.04);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 10px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle-icon {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  position: relative;
  border-radius: 2px;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

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

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

/* 主内容区 */
.site-main {
  flex: 1;
  width: 100%;
}

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 64px;
  width: 100%;
}

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

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

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

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

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

/* 页面标题区 */
.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 8px;
}

.page-description {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.7;
}

/* 页脚 */
.site-footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}

.footer-col-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

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

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

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

.info-col a {
  font-size: 14px;
  display: inline-block;
  margin-bottom: 8px;
}

.copyright-text {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 12px;
  line-height: 1.6;
}

/* ----------------------------------------------
   Components —— 通用组件：区块、卡片、列表、按钮
   ---------------------------------------------- */

/* 区块通用 */
.section-block {
  padding: 48px 0;
}

.section-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 8px;
}

.section-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

/* 更多链接 */
.more-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 16px;
  padding: 6px 0;
  border-bottom: 2px solid var(--color-primary-light);
}

.more-link:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary);
}

/* 漫画卡片（首页精选） */
.manga-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.manga-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.manga-cover {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-primary-light);
}

.manga-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.manga-card-body {
  padding: 16px;
}

.manga-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
}

.manga-tags {
  font-size: 13px;
  color: var(--color-primary);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 更新列表 */
.update-group {
  margin-bottom: 28px;
}

.update-date {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.update-date::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.update-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}

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

.update-name {
  color: var(--color-text);
  font-weight: 500;
}

.update-chapter {
  color: var(--color-text-light);
  font-size: 14px;
  font-family: var(--font-mono);
}

/* 排行榜 */
.ranking-list {
  counter-reset: rank;
}

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

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

.rank-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  width: 32px;
  flex-shrink: 0;
  text-align: center;
}

.ranking-item:nth-child(1) .rank-num {
  color: var(--color-accent);
  font-size: 22px;
}

.ranking-item:nth-child(2) .rank-num {
  color: var(--color-accent);
  font-size: 20px;
}

.ranking-item:nth-child(3) .rank-num {
  color: var(--color-accent);
  font-size: 19px;
}

.rank-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
}

/* 步骤条（首页快速指引） */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.guide-step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary-light);
  display: block;
  margin-bottom: 8px;
  line-height: 1;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* FAQ 手风琴 */
.faq-list {
  max-width: 800px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background: var(--color-white);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background 0.2s ease;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  font-weight: 400;
}

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

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

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

/* ----------------------------------------------
   Pages —— 各页面专属样式
   ---------------------------------------------- */

/* ===== 首页 ===== */
.hero-section {
  padding: 56px 0 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tag {
  display: inline-block;
  padding: 8px 18px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.hero-tag:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-primary-light);
}

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

/* 首页分类导航 */
.category-nav {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 32px;
  margin: 16px 0 0;
}

.category-nav .section-title {
  font-size: 20px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 12px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  transition: background 0.2s ease, transform 0.2s ease;
  text-align: center;
}

.category-card:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.category-icon {
  font-size: 28px;
  line-height: 1;
  color: var(--color-primary);
  transition: color 0.2s ease;
}

.category-card:hover .category-icon {
  color: var(--color-white);
}

.category-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.category-card:hover .category-name {
  color: var(--color-white);
}

/* 首页精选漫画 */
.featured-manga {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 32px;
  margin-top: 16px;
}

/* 首页最新更新 */
.latest-updates {
  margin-top: 16px;
}

/* 首页人气榜 */
.popular-ranking {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 32px;
  margin-top: 16px;
}

/* 首页快速指引 */
.quick-guide {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 16px;
}

.quick-guide .section-title {
  color: var(--color-primary);
}

/* ===== 漫画库 ===== */
.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  align-items: start;
}

.filter-sidebar {
  position: sticky;
  top: 84px;
}

.sidebar-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
}

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.filter-item {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

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

.filter-item.is-active {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

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

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

.manga-card-grid .manga-card {
  display: flex;
  flex-direction: column;
}

.manga-card-grid .manga-cover {
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.manga-card-grid .manga-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.manga-brief {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.browse-guide {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 24px;
}

.browse-guide .section-title {
  font-size: 18px;
  margin-bottom: 12px;
}

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

/* ===== 追更日历 ===== */
.update-calendar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

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

.day-card {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.day-card:hover {
  border-color: var(--color-primary);
}

.day-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.day-count {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.day-card ul li {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
}

.day-card ul li:last-child {
  border-bottom: none;
}

.update-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.update-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: box-shadow 0.2s ease;
}

.update-item:hover {
  box-shadow: var(--shadow-sm);
}

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

.update-info {
  flex: 1;
}

.update-info h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.update-meta {
  font-size: 13px;
  color: var(--color-primary);
  margin-bottom: 6px;
  font-family: var(--font-mono);
}

.update-info p:last-child {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.tip-block {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 16px;
}

.tip-block .section-title {
  color: var(--color-primary);
}

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

/* ===== 人气蛙榜 ===== */
.page-layout.sidebar-right {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}

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

.ranking-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.rank-number {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  width: 36px;
  flex-shrink: 0;
  text-align: center;
}

.ranking-item:nth-child(1) .rank-number {
  color: var(--color-accent);
  font-size: 22px;
}

.ranking-item:nth-child(2) .rank-number {
  color: var(--color-accent);
  font-size: 20px;
}

.ranking-item:nth-child(3) .rank-number {
  color: var(--color-accent);
  font-size: 19px;
}

.rank-cover {
  width: 48px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--color-primary-light);
}

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

.rank-info .rank-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.rank-tag {
  font-size: 12px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: 999px;
  display: inline-block;
}

.rank-meta {
  font-size: 13px;
  color: var(--color-text-light);
  flex-shrink: 0;
  text-align: right;
}

.heat-index {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-primary);
  display: block;
}

.trend-up {
  color: #38A169;
  font-size: 12px;
}

.trend-down {
  color: #E53E3E;
  font-size: 12px;
}

.ranking-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  line-height: 1.6;
}

.ranking-note a {
  font-weight: 500;
}

.sidebar-content {
  position: sticky;
  top: 84px;
}

.category-ranking {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.category-ranking .sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
}

.category-block {
  margin-bottom: 24px;
}

.category-block:last-child {
  margin-bottom: 0;
}

.category-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.category-list li {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.category-list li::before {
  content: attr(data-rank);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-light);
  width: 18px;
  flex-shrink: 0;
}

/* ===== 阅读手册 ===== */
.guide-section {
  margin-bottom: 40px;
}

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

.step-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  transition: box-shadow 0.2s ease;
}

.step-card:hover {
  box-shadow: var(--shadow-sm);
}

.step-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--color-primary-light);
  aspect-ratio: 16 / 9;
}

.step-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary-light);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

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

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

.faq-section .section-title {
  margin-bottom: 20px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-link {
  display: block;
  padding: 16px 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.related-link:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* ===== 版权与反馈 ===== */
.copyright-section {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}

.copyright-text-block .section-title {
  margin-bottom: 16px;
}

.copyright-text-block p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.copyright-illustration {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-primary-light);
}

.copyright-illustration img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.copyright-illustration figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 12px 16px;
  text-align: center;
  line-height: 1.6;
}

.feedback-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.feedback-section .section-title {
  margin-bottom: 8px;
}

.feedback-intro {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

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

.feedback-card {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.feedback-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.feedback-card p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
}

.feedback-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  line-height: 1.6;
}

.feedback-note a {
  font-weight: 500;
}

/* ===== 404 页 ===== */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 96px;
  font-weight: 800;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 28px;
  line-height: 1.7;
}

.error-back-btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
  margin-bottom: 40px;
}

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

.suggest-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.suggest-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.suggest-links a {
  display: inline-block;
  padding: 8px 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.suggest-links a:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

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

/* 平板及以下 */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

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

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

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

  .hero-content {
    max-width: 100%;
  }

  .hero-figure {
    max-width: 560px;
  }

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

  .filter-sidebar,
  .sidebar-content {
    position: static;
  }

  .page-layout.sidebar-left .filter-sidebar {
    order: -1;
  }

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

/* 手机端 */
@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
  }

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

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

  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    box-shadow: 0 8px 16px rgba(45, 55, 72, 0.08);
  }

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

  .nav-list li a {
    padding: 14px 12px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .home-main,
  .inner-main {
    padding: 16px 16px 48px;
  }

  .section-block {
    padding: 32px 0;
  }

  .hero-section {
    padding: 32px 0 24px;
  }

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

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

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

  .category-nav,
  .featured-manga,
  .popular-ranking,
  .quick-guide,
  .update-calendar,
  .tip-block,
  .ranking-section,
  .category-ranking,
  .copyright-section,
  .feedback-section,
  .browse-guide {
    padding: 20px;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-card {
    padding: 16px 10px;
  }

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

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

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

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

  .update-item {
    flex-direction: column;
    gap: 12px;
  }

  .update-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
    max-width: 160px;
  }

  .ranking-item {
    gap: 12px;
  }

  .rank-cover {
    width: 40px;
    height: 54px;
  }

  .rank-meta {
    display: none;
  }

  .rank-num,
  .rank-number {
    width: 28px;
    font-size: 16px;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 16px;
  }

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

  .page-description {
    font-size: 14px;
  }

  .breadcrumb {
    font-size: 13px;
    margin-bottom: 16px;
  }

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

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

  .copyright-illustration figcaption {
    font-size: 12px;
  }
}

/* 小屏手机 */
@media (max-width: 390px) {
  .header-inner {
    padding: 0 12px;
    gap: 12px;
  }

  .brand-name {
    font-size: 17px;
  }

  .brand-slogan {
    display: none;
  }

  .home-main,
  .inner-main {
    padding: 12px 12px 40px;
  }

  .hero-title {
    font-size: 22px;
  }

  .hero-tag {
    padding: 6px 12px;
    font-size: 12px;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .category-card {
    padding: 14px 8px;
  }

  .category-icon {
    font-size: 24px;
  }

  .category-name {
    font-size: 13px;
  }

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

  .update-list li {
    font-size: 14px;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .update-chapter {
    font-size: 13px;
  }

  .ranking-item {
    padding: 10px 0;
  }

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

  .footer-inner {
    padding: 0 12px;
  }
}