/* ============================================================
   五一动漫 · 全站样式表
   低饱和多彩风 · 灰调区分模块 · 清爽二次元阅读氛围
   ============================================================ */

/* ------------------------------------------------------------
   1. Base · 基础重置与全局变量
   ------------------------------------------------------------ */
:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #e0e0e0;
  --color-accent: #ff6b6b;
  --color-teal: #4ecdc4;
  --color-yellow: #ffe66d;
  --color-romance: #f28b82;
  --color-action: #e57373;
  --color-guide: #81c784;
  --color-category: #64b5f6;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;

  --header-height: 64px;
}

*,
*::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-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
  font-weight: 700;
}

h2 {
  font-size: 24px;
  font-weight: 700;
}

h3 {
  font-size: 18px;
  font-weight: 600;
}

h4 {
  font-size: 16px;
  font-weight: 600;
}

p {
  line-height: 1.7;
}

/* ------------------------------------------------------------
   2. Layout · 全站布局骨架
   ------------------------------------------------------------ */
.site-main {
  flex: 1;
  width: 100%;
}

.home-main {
  width: 100%;
}

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

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

.site-home,
.site-inner,
.site-error {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ------------------------------------------------------------
   3. Header · 页头与导航
   ------------------------------------------------------------ */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

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

.brand-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

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

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

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

.nav-list li a {
  display: block;
  padding: 8px 4px;
  font-size: 15px;
  color: var(--color-text-light);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ------------------------------------------------------------
   4. Breadcrumb · 面包屑
   ------------------------------------------------------------ */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) 0;
  font-size: 14px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

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

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

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

/* ------------------------------------------------------------
   5. Page Header · 内页标题区
   ------------------------------------------------------------ */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-md);
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

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

/* ------------------------------------------------------------
   6. Footer · 页脚
   ------------------------------------------------------------ */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-brand {
  flex: 1 1 260px;
  max-width: 320px;
}

.footer-slogan {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

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

.footer-links {
  flex: 2 1 520px;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-group {
  flex: 1 1 160px;
}

.footer-group h4 {
  font-size: 15px;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.footer-group ul li {
  margin-bottom: 6px;
}

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

.footer-group ul li a:hover {
  color: var(--color-accent);
}

.footer-copyright {
  flex-basis: 100%;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-light);
}

.footer-copyright p {
  line-height: 1.5;
}

/* ------------------------------------------------------------
   7. Home · 首页各模块
   ------------------------------------------------------------ */

/* 7.1 Hero 首屏 */
.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.hero-content h1 {
  font-size: 32px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 480px;
}

.hero-cta {
  display: inline-block;
  width: fit-content;
  padding: 10px 28px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.hero-cta:hover {
  background-color: #e85a5a;
  color: #ffffff;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

.hero-tags a {
  display: inline-block;
  padding: 4px 14px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-text-light);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.hero-tags a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-figure {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border);
}

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

/* 7.2 题材分类导航带 */
.category-strip {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.category-strip h2 {
  margin-bottom: var(--space-xs);
}

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

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.category-tags li a {
  display: block;
  padding: 8px 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--color-text);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.category-tags li a:hover {
  border-color: var(--color-category);
  background-color: #f0f7ff;
}

/* 7.3 最近更新 */
.updates-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.updates-section h2 {
  margin-bottom: var(--space-xs);
}

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

.update-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

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

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

.update-info h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

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

.update-time {
  font-size: 13px;
  color: var(--color-accent);
}

/* 7.4 人气榜单 */
.ranking-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.ranking-section h2 {
  margin-bottom: var(--space-xs);
}

.ranking-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-sm);
}

.ranking-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  position: relative;
}

.rank-num {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background-color: var(--color-yellow);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.rank-info h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.rank-info p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: 6px;
}

.rank-info a {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
}

/* 7.5 阅读指南入口 */
.guide-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.guide-entry h2 {
  margin-bottom: var(--space-md);
}

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

.guide-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.guide-card img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.guide-card h3 {
  font-size: 17px;
}

.guide-card p {
  font-size: 14px;
  color: var(--color-text-light);
  flex: 1;
}

.guide-card a {
  font-size: 14px;
  color: var(--color-guide);
  font-weight: 600;
  width: fit-content;
}

/* 7.6 长尾推荐预告 */
.recommend-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
}

.recommend-preview h2 {
  margin-bottom: var(--space-md);
}

.preview-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.preview-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.preview-card h3 {
  font-size: 17px;
}

.preview-card p {
  font-size: 14px;
  color: var(--color-text-light);
  flex: 1;
}

.preview-card a {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  width: fit-content;
}

/* ------------------------------------------------------------
   8. Categories 页 · 题材分类
   ------------------------------------------------------------ */
.category-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.category-list h2 {
  margin-bottom: var(--space-md);
}

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

.category-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

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

.category-card h3 {
  padding: var(--space-sm) var(--space-sm) 4px;
  font-size: 17px;
}

.category-card p {
  padding: 0 var(--space-sm) var(--space-xs);
  font-size: 14px;
  color: var(--color-text-light);
}

.category-card a {
  display: inline-block;
  margin: 0 var(--space-sm) var(--space-sm);
  font-size: 14px;
  color: var(--color-category);
  font-weight: 500;
}

.category-desc {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.category-desc h2 {
  margin-bottom: var(--space-sm);
}

.category-desc p {
  margin-bottom: var(--space-sm);
  max-width: 720px;
  color: var(--color-text-light);
}

/* ------------------------------------------------------------
   9. Guide 页 · 阅读指南
   ------------------------------------------------------------ */
.guide-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.guide-section h2 {
  margin-bottom: var(--space-xs);
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  max-width: 720px;
}

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

.method-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.step-num {
  display: inline-block;
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  background-color: var(--color-guide);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.method-step h3 {
  font-size: 16px;
}

.method-step p {
  font-size: 14px;
  color: var(--color-text-light);
}

.method-step a {
  font-size: 14px;
  color: var(--color-guide);
  font-weight: 500;
  width: fit-content;
}

.guide-media {
  max-width: var(--container-width);
  margin: var(--space-md) auto;
  padding: 0 var(--space-md);
}

.guide-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.guide-media figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: var(--space-xs) 0;
  text-align: center;
}

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

.faq-list details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.faq-list summary {
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
}

.faq-list details p {
  font-size: 14px;
  color: var(--color-text-light);
  padding-top: var(--space-xs);
}

/* ------------------------------------------------------------
   10. Romance 页 · 恋爱漫画推荐
   ------------------------------------------------------------ */
.recommend-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.recommend-list h2 {
  margin-bottom: var(--space-xs);
}

.manga-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: grid;
  grid-template-columns: 200px 1fr;
  margin-bottom: var(--space-md);
  transition: box-shadow 0.2s ease;
}

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

.manga-media {
  overflow: hidden;
}

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

.manga-info {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.manga-info h3 {
  font-size: 18px;
}

.manga-tag {
  font-size: 13px;
  color: var(--color-romance);
  font-weight: 500;
}

.manga-desc {
  font-size: 14px;
  color: var(--color-text-light);
  flex: 1;
}

.manga-fit {
  font-size: 14px;
  color: var(--color-text);
  background-color: #fdf0ef;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  width: fit-content;
}

.reason {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md);
}

.reason h2 {
  margin-bottom: var(--space-sm);
}

.reason p {
  margin-bottom: var(--space-sm);
  max-width: 720px;
  color: var(--color-text-light);
}

.reason ul {
  margin: var(--space-sm) 0;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  max-width: 720px;
}

.reason ul li {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.reason ul li strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ------------------------------------------------------------
   11. Action 页 · 热血漫画推荐
   ------------------------------------------------------------ */
.section-title {
  margin-bottom: var(--space-xs);
}

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

.comic-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: grid;
  grid-template-columns: 200px 1fr;
  margin-bottom: var(--space-md);
  transition: box-shadow 0.2s ease;
}

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

.comic-cover {
  overflow: hidden;
}

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

.comic-info {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.comic-info h3 {
  font-size: 18px;
}

.comic-tags {
  font-size: 13px;
  color: var(--color-action);
  font-weight: 500;
}

.comic-info p {
  font-size: 14px;
  color: var(--color-text-light);
  flex: 1;
}

.comic-scene {
  font-size: 14px;
  color: var(--color-text);
  background-color: #fdf0ef;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  width: fit-content;
}

.comic-scene strong {
  font-weight: 600;
}

.reason-content p {
  margin-bottom: var(--space-sm);
  max-width: 720px;
  color: var(--color-text-light);
}

/* ------------------------------------------------------------
   12. 404 页
   ------------------------------------------------------------ */
.error-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
}

.error-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  max-width: 520px;
  width: 100%;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: var(--space-sm);
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

.error-back {
  display: inline-block;
  padding: 10px 28px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.error-back:hover {
  background-color: #e85a5a;
  color: #ffffff;
}

/* ------------------------------------------------------------
   13. 滚动出现动画（不影响初始可见性）
   ------------------------------------------------------------ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 仅用于增强体验，不隐藏初始内容 */
@media (prefers-reduced-motion: no-preference) {
  .update-item,
  .category-card,
  .manga-card,
  .comic-card,
  .guide-card,
  .preview-card,
  .method-step {
    animation: fadeInUp 0.5s ease both;
  }
}

/* ------------------------------------------------------------
   14. Responsive · 响应式
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .hero-figure {
    order: -1;
  }

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

  .ranking-item:nth-child(4),
  .ranking-item:nth-child(5) {
    grid-column: span 1;
  }

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  .header-inner {
    padding: 0 var(--space-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: block;
    visibility: visible;
    opacity: 1;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-xs) var(--space-md);
  }

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

  .nav-list li a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 16px;
  }

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

  .nav-list li a.is-current {
    border-bottom-color: var(--color-accent);
  }

  .breadcrumb {
    padding: var(--space-sm) var(--space-sm) 0;
    font-size: 13px;
  }

  .page-header {
    padding: var(--space-md) var(--space-sm) var(--space-sm);
  }

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

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

  .inner-main {
    padding: 0 var(--space-sm) var(--space-lg);
  }

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

  .hero-content h1 {
    font-size: 26px;
  }

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

  .hero-cta {
    width: 100%;
    text-align: center;
  }

  .category-strip,
  .updates-section,
  .ranking-section,
  .guide-entry,
  .recommend-preview,
  .category-list,
  .category-desc,
  .guide-section,
  .recommend-list,
  .reason {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

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

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

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

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

  .method-steps {
    grid-template-columns: 1fr;
  }

  .manga-card,
  .comic-card {
    grid-template-columns: 1fr;
  }

  .manga-media img,
  .comic-cover img {
    aspect-ratio: 16 / 9;
    height: auto;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-sm) var(--space-sm);
  }

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

  .footer-links {
    gap: var(--space-md);
  }

  .footer-group {
    flex: 1 1 100%;
  }

  .footer-copyright {
    font-size: 12px;
  }

  .error-panel {
    padding: var(--space-lg) var(--space-md);
  }

  .error-code {
    font-size: 48px;
  }
}

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

  .ranking-item {
    flex-direction: row;
    align-items: center;
  }

  .rank-num {
    flex-shrink: 0;
  }

  .rank-info {
    flex: 1;
  }

  .category-tags {
    gap: var(--space-xs);
  }

  .category-tags li a {
    padding: 6px 16px;
    font-size: 14px;
  }

  .hero-tags a {
    font-size: 12px;
    padding: 4px 10px;
  }
}