/* ==========================================================================
   base — 基础变量、重置与全局排版
   ========================================================================== */
:root {
  --color-black: #000000;
  --color-dark: #333333;
  --color-gray: #666666;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --color-accent: #e63946;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --content-width: 720px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --header-height: 64px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
}

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

html {
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--color-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-black);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

p {
  margin-bottom: 0;
}

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

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

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.site-brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-black);
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-tag {
  font-size: 12px;
  color: var(--color-gray);
  white-space: nowrap;
}

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

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

.nav-list li {
  position: relative;
}

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

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

.nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-main {
  flex: 1;
  width: 100%;
}

.home-main {
  padding-bottom: var(--space-xl);
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-md);
}

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

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

.breadcrumb-sep {
  color: #bbb;
}

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

.page-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid #e5e5e5;
}

.page-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-black);
  margin-bottom: var(--space-xs);
}

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

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

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.footer-tagline {
  font-size: 14px;
  color: #999;
  line-height: 1.6;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav-list a {
  font-size: 14px;
  color: #999;
}

.footer-nav-list a:hover {
  color: var(--color-white);
}

.footer-info p {
  font-size: 14px;
  color: #999;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding: var(--space-sm) var(--space-md);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #777;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* ==========================================================================
   components — 通用组件：按钮、标签、卡片、封面图等
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

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

.btn-primary:hover {
  background-color: #c62e3a;
  border-color: #c62e3a;
  color: var(--color-white);
}

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

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

.section-heading {
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 4px;
}

.section-lead {
  font-size: 15px;
  color: var(--color-gray);
}

/* 封面图容器稳定约束 */
figure {
  margin: 0;
}

/* ==========================================================================
   pages: index — 首页
   ========================================================================== */

/* ---- hero ---- */
.hero-section {
  background-color: var(--color-light);
  padding: var(--space-xl) 0;
}

.hero-section .hero-copy,
.hero-section .hero-media {
  max-width: var(--container-width);
  margin: 0 auto;
}

.hero-section > .hero-copy,
.hero-section > .hero-media {
  padding: 0 var(--space-md);
}

/* 左文右图布局 */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-lg);
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
}

.hero-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-black);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-dark);
}

.hero-description {
  font-size: 16px;
  color: var(--color-gray);
  max-width: 480px;
}

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

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

.hero-media img {
  width: 100%;
  max-width: 520px;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ---- 题材分类导航 ---- */
.category-nav-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) 0;
}

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

.category-tag {
  display: inline-block;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-dark);
  background-color: var(--color-light);
  border: 1px solid #e5e5e5;
  border-radius: 999px;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.category-tag:hover {
  background-color: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

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

.update-group {
  margin-bottom: var(--space-lg);
}

.update-date {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-black);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-black);
  margin-bottom: var(--space-sm);
}

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

.update-item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background-color: var(--color-white);
  border: 1px solid #e5e5e5;
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.update-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.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;
  gap: 4px;
  min-width: 0;
}

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

.update-chapter {
  font-size: 13px;
  color: var(--color-gray);
}

.update-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: rgba(230, 57, 70, 0.08);
  border-radius: var(--radius-sm);
}

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

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

.ranking-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-sm);
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.ranking-item:hover {
  background-color: #ececec;
  transform: translateY(-2px);
}

.rank-number {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.ranking-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.rank-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rank-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-black);
}

.rank-reason {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

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

.guide-card {
  padding: var(--space-lg);
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-black);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.guide-card:hover {
  background-color: #ececec;
  transform: translateY(-2px);
}

.guide-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-xs);
}

.guide-card-text {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
}

.card-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
}

.card-link:hover {
  color: var(--color-black);
  text-decoration: underline;
}

/* ==========================================================================
   pages: category — 题材分类页
   ========================================================================== */

.category-grid-section {
  margin-bottom: var(--space-xl);
}

.category-grid-section h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

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

.category-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  border: 1px solid #e5e5e5;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.category-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.category-cover {
  width: 100%;
}

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

.category-info {
  padding: var(--space-sm) var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
}

.category-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-black);
}

.category-info p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.5;
  flex: 1;
}

.category-info a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: var(--space-xs);
}

.category-info a:hover {
  color: var(--color-black);
  text-decoration: underline;
}

.category-note-section {
  max-width: var(--content-width);
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.category-note-section h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.category-note-content p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

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

/* ==========================================================================
   pages: guide — 阅读指南页
   ========================================================================== */

.guide-content {
  max-width: var(--content-width);
}

.guide-section {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid #e5e5e5;
}

.guide-section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.guide-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.guide-section p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.guide-figure {
  margin: var(--space-md) 0;
}

.guide-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.guide-figure figcaption {
  font-size: 13px;
  color: var(--color-gray);
  text-align: center;
  margin-top: var(--space-xs);
}

.faq-item {
  border: 1px solid #e5e5e5;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xs);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: #ccc;
}

.faq-item summary {
  padding: var(--space-sm) var(--space-md);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-black);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  position: relative;
  padding-right: 40px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: var(--space-sm);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-gray);
  transition: transform var(--transition-fast);
}

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

.faq-item p {
  padding: 0 var(--space-md) var(--space-sm);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-gray);
}

/* ==========================================================================
   pages: romance — 恋爱漫画推荐页
   ========================================================================== */

.recommend-list {
  max-width: var(--content-width);
  margin-bottom: var(--space-xl);
}

.recommend-list h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: var(--space-lg);
}

.comic-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid #e5e5e5;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.comic-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.comic-cover-wrap {
  flex-shrink: 0;
  width: 140px;
}

.comic-cover {
  width: 140px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.comic-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: 0;
}

.comic-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-black);
}

.comic-meta {
  font-size: 13px;
  color: var(--color-gray);
}

.comic-desc {
  font-size: 14px;
  color: var(--color-dark);
  line-height: 1.6;
}

.comic-reason {
  font-size: 14px;
  color: var(--color-accent);
  line-height: 1.5;
  background-color: rgba(230, 57, 70, 0.06);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

.recommend-reasons {
  max-width: var(--content-width);
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.recommend-reasons h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.recommend-reasons p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.recommend-reasons strong {
  color: var(--color-black);
  font-weight: 700;
}

/* ==========================================================================
   pages: action — 热血漫画推荐页
   ========================================================================== */

.recommend-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid #e5e5e5;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.recommend-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.recommend-media {
  flex-shrink: 0;
  width: 140px;
}

.recommend-media img {
  width: 140px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.recommend-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: 0;
}

.recommend-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-black);
}

.recommend-info p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-dark);
}

.recommend-reasons .reason-list {
  margin: var(--space-sm) 0;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.reason-list li {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-dark);
  padding-left: 20px;
  position: relative;
}

.reason-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.reason-list strong {
  color: var(--color-black);
  font-weight: 700;
}

/* ==========================================================================
   pages: 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
}

.error-section {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 96px;
  font-weight: 800;
  color: var(--color-black);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-section h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.error-desc {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: var(--space-lg);
}

.error-btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  transition: background-color var(--transition-fast);
}

.error-btn:hover {
  background-color: #c62e3a;
  color: var(--color-white);
}

.error-help {
  font-size: 14px;
  color: var(--color-gray);
}

.error-help a {
  color: var(--color-accent);
  font-weight: 500;
}

.error-help a:hover {
  color: var(--color-black);
  text-decoration: underline;
}

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

/* 平板：≤ 1024px */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .hero-media {
    order: -1;
  }

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

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

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

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

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

/* 手机：≤ 768px */
@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: var(--header-height);
    padding: 8px var(--space-sm);
    flex-wrap: wrap;
  }

  .brand-tag {
    display: none;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    order: 4;
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: var(--space-xs) 0;
    border-top: 1px solid #e5e5e5;
  }

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

  .nav-list a {
    padding: 12px 8px;
    border-radius: 0;
  }

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

  .hero-title {
    font-size: 32px;
  }

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

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

  .btn {
    width: 100%;
  }

  .category-nav-section,
  .recent-updates-section,
  .ranking-preview-section,
  .guide-entry-section {
    padding: var(--space-lg) var(--space-sm) 0;
  }

  .category-tags {
    gap: 8px;
  }

  .category-tag {
    padding: 8px 16px;
    font-size: 14px;
  }

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

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

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

  .guide-card {
    padding: var(--space-md);
  }

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

  .page-title {
    font-size: 28px;
  }

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

  .category-note-section {
    padding: var(--space-md);
  }

  .comic-card,
  .recommend-item {
    flex-direction: column;
    padding: var(--space-sm);
  }

  .comic-cover-wrap,
  .recommend-media {
    width: 100%;
  }

  .comic-cover,
  .recommend-media img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .footer-bottom {
    padding: var(--space-xs) var(--space-sm);
  }

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

/* 小屏手机：≤ 480px */
@media (max-width: 480px) {
  .ranking-list {
    grid-template-columns: 1fr;
  }

  .brand-name {
    font-size: 18px;
  }

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

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-actions {
    gap: 8px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 15px;
  }

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

  .update-item {
    padding: var(--space-xs);
  }

  .update-item img {
    width: 60px;
    height: 80px;
  }

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

  .ranking-item img {
    width: 64px;
    height: 84px;
    aspect-ratio: auto;
  }

  .rank-info {
    flex: 1;
  }

  .guide-card {
    padding: var(--space-sm);
  }

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

  .page-description {
    font-size: 15px;
  }

  .breadcrumb {
    font-size: 13px;
  }

  .faq-item summary {
    padding: var(--space-xs) var(--space-sm);
    font-size: 15px;
  }

  .faq-item p {
    padding: 0 var(--space-sm) var(--space-xs);
    font-size: 14px;
  }

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

  .error-section h1 {
    font-size: 22px;
  }
}