/* ==========================================================================
   喵趣漫画网页官方 · 全站样式
   视觉方向：日系漫画编辑风，白底黑字，红色强调，克制留白
   ========================================================================== */

/* ==========================================================================
   Base — 基础变量、重置与全局元素
   ========================================================================== */

:root {
  --color-white: #ffffff;
  --color-ink: #1a1a1a;
  --color-accent: #e63946;
  --color-bg-soft: #f5f5f5;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #e5e5e5;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 6px 20px rgba(0, 0, 0, 0.12);
  --transition-base: 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-color: var(--color-white);
}

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

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.4;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.125rem;
}

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

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

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

.site-header {
  background-color: var(--color-white);
  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: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 1px;
}

.brand-name::first-letter {
  color: var(--color-accent);
}

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

.site-nav .nav-list a {
  display: block;
  padding: 8px 16px;
  font-size: 0.9375rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.site-nav .nav-list a:hover {
  color: var(--color-accent);
  background-color: var(--color-bg-soft);
}

.site-nav .nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
  background-color: rgba(230, 57, 70, 0.06);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

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

.site-footer {
  background-color: var(--color-ink);
  color: #cccccc;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #999999;
}

.footer-brand strong {
  display: block;
  font-size: 1.125rem;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

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

.footer-col ul a {
  font-size: 0.875rem;
  color: #999999;
}

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

.copyright {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  margin-top: 8px;
  font-size: 0.8125rem;
  color: #777777;
  text-align: center;
}

/* 内页通用骨架 */

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

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

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

.breadcrumb-sep {
  color: #bbbbbb;
}

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

.page-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--color-ink);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

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

/* ==========================================================================
   Components — 通用组件：按钮、标签、卡片、列表
   ========================================================================== */

.btn-primary,
.btn-secondary,
.btn-back,
.card-link,
.read-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #d12d3a;
  border-color: #d12d3a;
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-ink);
  border: 2px solid var(--color-ink);
}

.btn-secondary:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.card-link {
  padding: 8px 20px;
  border: 1px solid var(--color-ink);
  font-size: 0.875rem;
}

.card-link:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.read-link {
  padding: 6px 18px;
  font-size: 0.875rem;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

.read-link:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

.tag-item {
  display: inline-block;
  padding: 6px 18px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.tag-item:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: rgba(230, 57, 70, 0.04);
}

/* ==========================================================================
   Pages — 首页模块
   ========================================================================== */

/* Hero 首屏 */

.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 480px;
}

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

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

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

/* 题材分类导航带 */

.categories-nav {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
}

.categories-nav h2,
.recent-updates h2,
.ranking-preview h2,
.guide-entry h2,
.long-tail-preview h2 {
  font-size: 1.375rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.categories-nav h2::before,
.recent-updates h2::before,
.ranking-preview h2::before,
.guide-entry h2::before,
.long-tail-preview h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* 最近更新 */

.recent-updates {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.update-group h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}

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

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

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

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

.update-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-width: 0;
}

.update-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.update-title:hover {
  color: var(--color-accent);
}

.update-status {
  font-size: 0.8125rem;
  color: var(--color-accent);
  background-color: rgba(230, 57, 70, 0.08);
  padding: 2px 10px;
  border-radius: 999px;
  align-self: flex-start;
}

/* 人气榜单预览 */

.ranking-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  background-color: var(--color-bg-soft);
}

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

.ranking-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.ranking-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.ranking-info {
  padding: 20px;
}

.ranking-info h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.ranking-info p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
  line-height: 1.6;
}

.ranking-info a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* 阅读指南入口 */

.guide-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.guide-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: box-shadow var(--transition-base);
}

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

.guide-card h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.guide-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.guide-card a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* 长尾推荐预告 */

.long-tail-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

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

.topic-card {
  display: block;
  background-color: var(--color-ink);
  color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.topic-card:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-4px);
}

.topic-card h3 {
  font-size: 1.25rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.topic-card p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
}

.topic-card:hover p {
  color: rgba(255, 255, 255, 0.9);
}

/* ==========================================================================
   Pages — 题材分类页
   ========================================================================== */

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

.category-section > h2 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.category-section > p {
  color: var(--color-text-light);
  margin-bottom: 20px;
  max-width: 720px;
}

.category-section .tag-list {
  margin-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);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-body h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.card-body p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

/* 分类页的指南入口区 */

.category-section + .guide-entry {
  border-top: 1px solid var(--color-border);
}

.guide-entry .guide-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.guide-links a {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.guide-links a:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

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

.guide-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

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

.guide-section {
  margin-bottom: 48px;
}

.guide-section > h2 {
  font-size: 1.375rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-ink);
}

.guide-lead {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 24px;
}

.guide-block {
  margin-bottom: 28px;
  padding-left: 20px;
  border-left: 3px solid var(--color-border);
}

.guide-block h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.guide-block p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.guide-scenario {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 28px;
}

.guide-scenario h2 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.guide-scenario p {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 16px;
}

.guide-scenario a {
  color: var(--color-accent);
  font-weight: 600;
}

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

.sidebar-box {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 32px;
}

.sidebar-box h3 {
  font-size: 1rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-links li {
  margin-bottom: 12px;
}

.sidebar-links a {
  font-size: 0.9375rem;
  color: var(--color-text);
  display: inline-block;
  padding: 4px 0;
}

.sidebar-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.guide-illustration {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.guide-illustration figcaption {
  background-color: var(--color-white);
  padding: 12px 16px;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* 指南页功能列表（若存在） */

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.feature-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.9375rem;
}

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

.recommendation-list {
  margin-bottom: 48px;
}

.section-title {
  font-size: 1.375rem;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-ink);
}

.recommendation-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 24px;
  margin-bottom: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base);
}

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

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

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

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

.item-title {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.item-genre {
  font-size: 0.8125rem;
  color: var(--color-accent);
  background-color: rgba(230, 57, 70, 0.08);
  display: inline-block;
  padding: 2px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.item-desc {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.7;
}

.item-reason {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.6;
  padding: 12px 16px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
}

.item-reason strong {
  color: var(--color-ink);
  margin-right: 4px;
}

.recommendation-notes {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 32px;
}

.recommendation-notes p {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.7;
}

.recommendation-notes p:last-child {
  margin-bottom: 0;
}

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

.recommend-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 24px;
  margin-bottom: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base);
}

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

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

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

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

.recommend-content h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.recommend-content p {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.7;
}

.recommend-reason {
  font-size: 0.875rem;
  color: var(--color-text-light);
  padding: 12px 16px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.recommend-reason strong {
  color: var(--color-ink);
  margin-right: 4px;
}

.reason-explanation {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 32px;
}

.reason-explanation h2 {
  font-size: 1.375rem;
  margin-bottom: 16px;
}

.reason-explanation p {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.7;
}

.reason-explanation p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 404 错误页
   ========================================================================== */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.btn-back {
  background-color: var(--color-accent);
  color: var(--color-white);
  border: 2px solid var(--color-accent);
}

.btn-back:hover {
  background-color: #d12d3a;
  border-color: #d12d3a;
  color: var(--color-white);
}

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

@media (max-width: 1024px) {
  .hero-section {
    gap: 32px;
    padding: 48px 24px 40px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

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

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

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

  .guide-layout {
    grid-template-columns: 1fr 280px;
    gap: 32px;
  }
}

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

  .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);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px;
    gap: 4px;
  }

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

  .site-nav .nav-list a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .hero-section {
    grid-template-columns: 1fr;
    padding: 40px 16px 32px;
    gap: 24px;
  }

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

  .hero-figure {
    order: -1;
  }

  .hero-figure img {
    aspect-ratio: 16 / 10;
  }

  .categories-nav,
  .recent-updates,
  .ranking-preview,
  .guide-entry,
  .long-tail-preview {
    padding: 40px 16px;
  }

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

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

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

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

  .guide-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .guide-sidebar {
    order: 2;
  }

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

  .recommendation-item,
  .recommend-item {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  .item-cover,
  .recommend-media {
    max-width: 200px;
  }

  .cover-img,
  .recommend-media img {
    aspect-ratio: 3 / 4;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .page-header {
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 1.625rem;
  }

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

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  .tag-list {
    gap: 8px;
  }

  .tag-item {
    padding: 5px 14px;
    font-size: 0.8125rem;
  }

  .update-item {
    padding: 12px;
  }

  .update-item img {
    width: 64px;
    height: 88px;
  }

  .ranking-info {
    padding: 16px;
  }

  .guide-card {
    padding: 20px;
  }

  .topic-card {
    padding: 24px;
  }

  .recommendation-notes,
  .reason-explanation {
    padding: 24px;
  }
}