/* ============================================================
   base — 全局基础样式
   ============================================================ */
:root {
  --color-primary: #2F6DF6;
  --color-primary-dark: #1E56D8;
  --color-accent: #FFB347;
  --color-bg: #F6F8FC;
  --color-card: #FFFFFF;
  --color-text: #1F2937;
  --color-text-secondary: #6B7280;
  --color-border: #E5E7EB;
  --radius-card: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 1px 4px rgba(31, 41, 55, 0.06);
  --shadow-card-hover: 0 6px 20px rgba(31, 41, 55, 0.10);
  --container-width: 1200px;
  --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

*,
*::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;
  font-weight: 400;
  line-height: 1.7;
  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);
  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 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
  font-weight: 600;
}

p {
  margin-bottom: 16px;
}

p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   layout — 全站布局骨架
   ============================================================ */
.site-header {
  background-color: var(--color-card);
  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 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand-logo::before {
  content: '';
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background-color: var(--color-primary);
  display: inline-block;
  flex-shrink: 0;
}

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

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

.site-nav .nav-list a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 6px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-nav .nav-list a:hover {
  color: var(--color-primary);
  background-color: rgba(47, 109, 246, 0.06);
}

.site-nav .nav-list a.is-current {
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(47, 109, 246, 0.08);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 6px;
}

.nav-toggle:hover {
  background-color: rgba(47, 109, 246, 0.06);
}

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

.site-main {
  min-height: 60vh;
}

.site-main.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.site-footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .brand-logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 320px;
}

.footer-nav h3,
.footer-legal h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-nav ul li,
.footer-legal ul li {
  margin-bottom: 10px;
}

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

.footer-nav ul a:hover,
.footer-legal ul a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 24px;
  text-align: center;
}

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

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

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

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

.breadcrumb-sep {
  color: var(--color-border);
}

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

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* 内页两栏布局 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

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

/* 侧栏 */
.aside {
  min-width: 0;
}

.aside h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.aside-inner {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.related-block {
  margin-bottom: 28px;
}

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

.aside-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.related-list li {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.related-list li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.related-list a {
  font-size: 15px;
  font-weight: 500;
  display: inline-block;
  margin-bottom: 4px;
}

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

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

.related-link {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.related-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.related-link h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

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

.guide-link {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px;
  margin-bottom: 12px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.guide-link:last-child {
  margin-bottom: 0;
}

.guide-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.guide-link h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.guide-link h3 a {
  color: var(--color-text);
}

.guide-link h3 a:hover {
  color: var(--color-primary);
}

.guide-link p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ============================================================
   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: 600;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(47, 109, 246, 0.25);
}

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

.btn-secondary:hover {
  background-color: rgba(47, 109, 246, 0.08);
  color: var(--color-primary-dark);
}

.btn-back-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  background-color: var(--color-primary);
  color: #ffffff;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-back-home:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(47, 109, 246, 0.25);
}

/* 区块标题 */
.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
  padding-bottom: 12px;
}

.section-head h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background-color: var(--color-primary);
}

.section-head p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-top: 12px;
  margin-bottom: 0;
  max-width: 640px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background-color: var(--color-primary);
}

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

/* 题材标签 */
.genre-tag,
.tag {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 500;
  color: #ffffff;
  background-color: var(--color-accent);
  border-radius: var(--radius-tag);
  line-height: 1.6;
  white-space: nowrap;
}

/* 内容媒体图 */
.content-media {
  margin-bottom: 24px;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
}

.content-media figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 8px;
  line-height: 1.6;
}

.content-media-inline {
  max-width: 720px;
}

/* 横向滚动列表 */
.update-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.update-scroll::-webkit-scrollbar {
  height: 4px;
}

.update-scroll::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 4px;
}

.update-scroll::-webkit-scrollbar-track {
  background: transparent;
}

/* 步骤数字 */
.hero .step-num,
.chase-step .step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* 相关链接横条 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-top: 48px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 4px;
}

.related-links-item {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.related-links-item:hover {
  color: var(--color-primary);
  background-color: rgba(47, 109, 246, 0.06);
}

/* ============================================================
   pages — 首页
   ============================================================ */
/* Hero 区 */
.hero {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 0;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.step {
  background-color: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: box-shadow var(--transition-fast);
}

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

.step .step-num {
  margin-bottom: 8px;
}

.step h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

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

.cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-hover);
}

/* 题材分类封面墙 */
.genre-wall {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 0;
}

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

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

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

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

.genre-card h3 {
  font-size: 17px;
  font-weight: 600;
  padding: 16px 16px 4px;
}

.genre-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 0 16px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.genre-card a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  padding: 0 16px 16px;
}

/* 最近更新 */
.updates {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 0;
}

.update-card {
  flex: 0 0 220px;
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

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

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

.update-card .genre-tag {
  margin: 12px 12px 0;
}

.update-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 8px 12px 16px;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 榜单 + 专题双栏 */
.rank-feature {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 0;
}

.rank-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.rank-list {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.rank-list h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.rank-list ol {
  margin-bottom: 16px;
}

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

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

.rank-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-bg);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.rank-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.rank-item p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.more-link {
  font-size: 14px;
  font-weight: 500;
  display: inline-block;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature-list h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 0;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
  align-self: flex-start;
}

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

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

.feature-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.feature-card h4 {
  font-size: 16px;
  font-weight: 600;
  padding: 16px 16px 4px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 0 16px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.feature-card a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  padding: 0 16px 16px;
}

/* 阅读指南入口 */
.guide-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 0;
}

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

.entry-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.entry-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.entry-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.entry-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

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

/* ============================================================
   pages — 漫画分类
   ============================================================ */
.category-grid-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

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

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

.category-cover {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.category-info {
  padding: 16px;
}

.category-name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.category-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

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

/* 适龄参考 */
.age-guide {
  margin-bottom: 48px;
}

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

.age-block {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.age-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

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

/* 标签说明 */
.tag-explanation-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tag-type {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
}

.tag-type-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.tag-type-example {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 8px;
}

.tag-type-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ============================================================
   pages — 最近更新
   ============================================================ */
.update-intro,
.chase-guide,
.archive {
  margin-bottom: 48px;
}

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

.intro-item {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.intro-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: rgba(47, 109, 246, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
  color: var(--color-primary);
}

.intro-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.intro-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

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

.chase-step {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
}

.chase-step .step-num {
  margin-bottom: 12px;
}

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

.chase-step p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

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

.archive-card {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

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

.archive-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: rgba(255, 179, 71, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

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

.archive-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

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

/* ============================================================
   pages — 人气榜单
   ============================================================ */
.rank-col {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 32px;
}

.rank-col-header {
  margin-bottom: 20px;
}

.rank-col-header h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.rank-col-header p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 12px;
  margin-bottom: 0;
}

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

.rank-col-body .rank-item:last-child {
  border-bottom: none;
}

.rank-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-bg);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.rank-col-body .rank-item:nth-child(-n+3) .rank-number {
  background-color: var(--color-accent);
  color: #ffffff;
}

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

.rank-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.rank-content p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.rank-arrow {
  color: var(--color-border);
  font-size: 18px;
  flex-shrink: 0;
}

.rank-col .content-media {
  margin-top: 20px;
}

/* 榜单说明 */
.ranking-notes {
  margin-top: 48px;
}

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

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

.note-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

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

/* 榜单相关入口 */
.rank-related {
  margin-top: 48px;
}

.rank-related h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.rank-related .related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}

.related-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.related-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.related-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

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

/* ============================================================
   pages — 主题专题
   ============================================================ */
.current-feature {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.feature-gallery {
  min-width: 0;
}

.feature-hero {
  margin: 0 0 16px;
}

.feature-hero img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.thumb-item {
  border: 2px solid var(--color-border);
  border-radius: 6px;
  padding: 0;
  background: none;
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.thumb-item img {
  width: 100%;
  height: 60px;
  object-fit: cover;
  display: block;
}

.thumb-item:hover {
  border-color: var(--color-primary);
}

.thumb-item.is-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(47, 109, 246, 0.3);
  position: relative;
}

.thumb-item.is-active::after {
  content: '✓';
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-info h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.feature-meta {
  margin-bottom: 24px;
}

.meta-row {
  display: flex;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.meta-row:last-child {
  border-bottom: none;
}

.meta-row dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  flex-shrink: 0;
  width: 80px;
}

.meta-row dd {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
  flex: 1;
}

.feature-note {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
  padding: 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-card);
}

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

/* 专题网格 */
.feature-nav-section {
  margin-bottom: 48px;
}

.feature-nav-section h2,
.feature-archive h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

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

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

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

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.feature-card .card-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

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

/* 往期专题 */
.feature-archive .archive-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-archive .archive-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
}

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

.feature-archive .archive-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

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

/* ============================================================
   pages — 阅读指南
   ============================================================ */
.faq-section {
  margin-bottom: 48px;
}

.faq-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary);
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition-fast);
}

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

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

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

.faq-item[open] summary::after {
  content: '−';
  transform: rotate(45deg);
}

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

.faq-answer p {
  margin-bottom: 8px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   pages — 404
   ============================================================ */
.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.error-panel {
  text-align: center;
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 48px 32px;
  max-width: 520px;
  width: 100%;
}

.error-panel h1 {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  line-height: 1;
}

.error-panel p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.error-panel .btn-back-home {
  margin-top: 24px;
}

/* ============================================================
   responsive — 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .genre-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

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

  .hero-figure {
    max-width: 640px;
  }

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

@media (max-width: 768px) {
  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  .header-inner {
    height: 60px;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(31, 41, 55, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

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

  .site-nav .nav-list a {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 6px;
  }

  .site-nav .nav-list li {
    border-bottom: 1px solid var(--color-border);
  }

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

  .site-nav .nav-list.is-open {
    max-height: 480px;
  }

  .site-main.inner-main {
    padding: 24px 16px 48px;
  }

  .page-header {
    margin-bottom: 28px;
  }

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

  /* 两栏布局转单栏 */
  .page-layout,
  .layout-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .aside {
    order: 2;
  }

  .main-content {
    order: 1;
  }

  /* 首页 */
  .hero {
    padding: 40px 0;
  }

  .hero-content {
    padding: 0 16px;
  }

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

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

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

  .step {
    display: flex;
    gap: 12px;
    align-items: flex-start;
  }

  .step .step-num {
    margin-bottom: 0;
  }

  .cta-group {
    flex-direction: column;
  }

  .cta-group .btn {
    width: 100%;
  }

  .genre-wall,
  .updates,
  .rank-feature,
  .guide-entry {
    padding: 40px 16px 0;
  }

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

  .genre-card img {
    height: 120px;
  }

  .rank-feature-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  /* 分类页 */
  .category-grid-inner {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .age-guide-inner {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .tag-explanation-inner {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* 更新页 */
  .intro-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

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

  /* 榜单页 */
  .notes-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  /* 专题页 */
  .current-feature {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 20px;
  }

  .feature-hero img {
    height: 200px;
  }

  .thumbs {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .thumb-item img {
    height: 44px;
  }

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

  .feature-archive .archive-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .footer-brand p {
    max-width: 100%;
  }

  .footer-bottom {
    padding: 16px;
  }

  /* 相关链接横条 */
  .related-links {
    padding: 12px 16px;
    gap: 8px;
  }

  .related-links-item {
    font-size: 13px;
    padding: 4px 6px;
  }

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

  .error-panel {
    padding: 32px 20px;
  }

  .error-panel h1 {
    font-size: 56px;
  }
}

@media (max-width: 480px) {
  .genre-grid {
    grid-template-columns: 1fr;
  }

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

  .update-card {
    flex-basis: 180px;
  }

  .update-card img {
    height: 120px;
  }

  .rank-feature-grid {
    gap: 16px;
  }

  .rank-list {
    padding: 16px;
  }

  .meta-row {
    flex-direction: column;
    gap: 4px;
  }

  .meta-row dt {
    width: auto;
  }
}