/* ============================================================
   base — 全局基础样式
   ============================================================ */
:root {
  --color-primary: #2B3A4A;
  --color-bg: #F5F0E6;
  --color-accent: #E86A33;
  --color-blue: #4A90D9;
  --color-gray: #7A8B99;
  --color-white: #ffffff;
  --color-border: #e2dacb;
  --color-text: #2B3A4A;
  --color-text-light: #5a6b7a;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius: 8px;
  --header-height: 64px;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

p {
  line-height: 1.6;
}

button {
  font-family: var(--font-base);
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================================
   layout — 全站布局骨架
   ============================================================ */

/* 容器 */
.header-inner,
.site-main,
.footer-columns,
.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 页头 */
.site-header {
  background-color: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(43, 58, 74, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 1px;
}

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

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  margin: 0 auto;
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  border-radius: 4px;
  line-height: 1.4;
}

.nav-list li a:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-list li a.is-current {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.16);
  font-weight: 600;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  margin-top: 60px;
  padding-top: 48px;
  padding-bottom: 24px;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 32px;
}

.footer-col h4 {
  font-size: 16px;
  color: var(--color-white);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  color: var(--color-white);
  font-size: 20px;
  transition: background-color var(--transition);
}

.back-to-top:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.back-to-top::before {
  content: "↑";
  font-size: 18px;
  font-weight: 700;
}

/* 主内容区 */
.site-main {
  min-height: 60vh;
}

.home-main {
  padding-top: 0;
}

.inner-main {
  padding-top: 28px;
  padding-bottom: 40px;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto 24px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--color-gray);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-gray);
  opacity: 0.6;
}

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

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto 32px;
  padding: 0 20px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* 内页布局：主内容 + 侧栏 */
.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}

.content-area {
  min-width: 0;
  min-height: 200px;
}

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

/* 滚动出现动画（仅作为增强，不影响初始可见） */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.module,
.guide-section,
.recommendation-list,
.analysis,
.subject-list,
.subject-works {
  animation: fadeInUp 0.5s ease both;
}

/* ============================================================
   components — 通用组件
   ============================================================ */

/* 模块通用 */
.module {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 20px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.text-link:hover {
  color: var(--color-primary);
}

.text-link::after {
  content: " →";
}

/* 漫画卡片 */
.manga-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.manga-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(43, 58, 74, 0.1);
}

.manga-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.manga-card h3 {
  font-size: 17px;
  font-weight: 700;
  padding: 12px 14px 4px;
}

.manga-card h3 a {
  color: var(--color-primary);
}

.manga-card h3 a:hover {
  color: var(--color-accent);
}

.manga-card .meta {
  font-size: 13px;
  color: var(--color-gray);
  padding: 0 14px;
  margin-bottom: 4px;
}

.manga-card .update-info {
  font-size: 13px;
  color: var(--color-accent);
  padding: 0 14px 14px;
}

/* 侧栏卡片 */
.sidebar-area {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.related-recommend,
.sidebar-card,
.related-links,
.subject-tip,
.related-note {
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.related-recommend h2,
.sidebar-card h3,
.related-links h2,
.subject-tip h2 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.related-list li,
.sidebar-links li,
.related-links ul li {
  margin-bottom: 10px;
}

.related-list li a,
.sidebar-links li a,
.related-links ul li a {
  font-size: 14px;
  line-height: 1.5;
}

.related-list li a::before,
.sidebar-links li a::before,
.related-links ul li a::before {
  content: "›";
  margin-right: 6px;
  color: var(--color-accent);
  font-weight: 700;
}

/* ============================================================
   pages — 首页
   ============================================================ */

/* 首屏 hero-list */
.hero-list {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  padding-top: 36px;
  padding-bottom: 36px;
}

.hero-featured {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.featured-cover {
  width: 100%;
  aspect-ratio: 16 / 8;
  overflow: hidden;
}

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

.featured-info {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.hero-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.hero-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
  flex: 1;
}

.hero-cta {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 10px 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  align-self: flex-start;
}

.hero-cta:hover {
  background-color: #d45a28;
  color: var(--color-white);
}

.hero-updates {
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.hero-updates .section-title {
  margin-bottom: 16px;
}

.update-list li {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-border);
}

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

.update-list li a {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
}

.hero-updates .text-link {
  margin-top: 16px;
}

/* 题材分类导航 */
.subject-nav {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.subject-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 10px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.subject-tag:hover {
  transform: translateY(-2px);
  opacity: 0.9;
  color: var(--color-white);
}

.tag-hot {
  background-color: #d9534f;
}

.tag-romance {
  background-color: #e9859d;
}

.tag-scifi {
  background-color: #4A90D9;
}

.tag-fantasy {
  background-color: #7c6bb5;
}

.tag-mystery {
  background-color: #5a6b7a;
}

.tag-daily {
  background-color: #6ba37a;
}

.subject-desc {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-gray);
  text-align: center;
}

/* 最近更新 */
.recent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 人气榜单 */
.ranking {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ranking-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--color-border);
}

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

.rank {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background-color: var(--color-bg);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.ranking-list li:nth-child(1) .rank {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.ranking-list li:nth-child(2) .rank {
  background-color: #e8a13a;
  color: var(--color-white);
}

.ranking-list li:nth-child(3) .rank {
  background-color: #8a9aa8;
  color: var(--color-white);
}

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

.rank-item a {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.rank-reason {
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 4px;
  line-height: 1.5;
}

/* 阅读指南入口 */
.guide-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.guide-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 28px;
}

.guide-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.guide-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

/* 长尾专题卡片 */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.topic-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

.topic-card h3 {
  padding: 16px 20px 6px;
  font-size: 18px;
}

.topic-card h3 a {
  color: var(--color-primary);
}

.topic-card p {
  padding: 0 20px 20px;
  font-size: 14px;
  color: var(--color-text-light);
}

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

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

.subject-list .section-intro,
.subject-works .section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.subject-list .subject-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.subject-item {
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.subject-color {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.subject-hot-blood {
  background-color: #d9534f;
}

.subject-romance {
  background-color: #e9859d;
}

.subject-sci-fi {
  background-color: #4A90D9;
}

.subject-fantasy {
  background-color: #7c6bb5;
}

.subject-mystery {
  background-color: #5a6b7a;
}

.subject-daily {
  background-color: #6ba37a;
}

.subject-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.subject-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 6px;
  line-height: 1.5;
}

.subject-item a {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

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

/* 题材代表作品 */
.work-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.work-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.work-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.work-card figcaption {
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.subject-tip p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

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

.layout-shell .page-layout {
  margin-bottom: 0;
}

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

.guide-section .section-title {
  margin-bottom: 12px;
}

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

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.guide-step {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 20px;
  align-items: center;
}

.step-media {
  width: 160px;
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  overflow: hidden;
}

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

.step-content h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

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

/* 技巧卡片 */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.tip-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
}

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

.faq-item summary:hover {
  background-color: var(--color-bg);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-light);
}

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

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

.recommendation-list h2,
.analysis h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-left: 14px;
  position: relative;
}

.recommendation-list h2::before,
.analysis h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

.recommendation-list .manga-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 20px;
  margin-bottom: 20px;
}

.manga-cover-wrap {
  width: 200px;
  aspect-ratio: 4 / 5;
  border-radius: 6px;
  overflow: hidden;
}

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

.manga-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.manga-info h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.manga-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.manga-tags .tag {
  display: inline-block;
  background-color: var(--color-bg);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 12px;
  color: var(--color-primary);
  font-weight: 500;
}

.manga-info > p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.recommend-reason {
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg);
  border-radius: 6px;
  padding: 12px 14px;
}

.recommend-reason strong {
  color: var(--color-accent);
  margin-right: 6px;
}

/* 分析模块 */
.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.analysis-item {
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.analysis-item h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

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

/* 更多阅读 */
.more-reading {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.more-reading p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 2;
}

.more-reading a {
  color: var(--color-accent);
  font-weight: 500;
}

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

.more-reading a + a::before {
  content: "·";
  margin: 0 10px;
  color: var(--color-gray);
}

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

.card-media {
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

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

.card-body {
  padding: 0 20px 20px;
}

.card-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
  padding-top: 14px;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.card-body .tags .tag {
  display: inline-block;
  background-color: var(--color-bg);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 12px;
  color: var(--color-primary);
  font-weight: 500;
}

.card-body > p {
  font-size: 14px;
  color: var(--color-text-light);
}

.analysis > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.more-guide {
  margin-top: 24px;
  font-size: 14px;
  line-height: 2;
}

.more-guide a {
  color: var(--color-accent);
}

.more-guide a + a::before {
  content: "·";
  margin: 0 10px;
  color: var(--color-gray);
}

.related-note p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ============================================================
   pages — 404 页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 40px 20px;
}

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

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

.error-content h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

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

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: #d45a28;
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.error-tip {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 2;
}

.error-tip a {
  color: var(--color-accent);
}

.error-tip a + a::before {
  content: "·";
  margin: 0 10px;
  color: var(--color-gray);
}

/* ============================================================
   responsive — 响应式
   ============================================================ */

@media (max-width: 1024px) {
  .subject-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 20px;
  }

  .header-inner {
    height: auto;
    min-height: var(--header-height);
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    box-shadow: 0 8px 16px rgba(43, 58, 74, 0.2);
  }

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

  .nav-list li a {
    padding: 12px 20px;
    font-size: 16px;
  }

  /* 首页 */
  .hero-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-featured {
    order: 1;
  }

  .hero-updates {
    order: 2;
  }

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

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

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

  /* 内页 */
  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .content-area {
    order: 1;
  }

  .sidebar-area {
    order: 2;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  /* 指南页 */
  .guide-step {
    grid-template-columns: 1fr;
  }

  .step-media {
    width: 100%;
    aspect-ratio: 16 / 9;
  }

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

  /* 专题页 */
  .recommendation-list .manga-card {
    grid-template-columns: 1fr;
  }

  .manga-cover-wrap {
    width: 100%;
    aspect-ratio: 16 / 10;
  }

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

  .work-gallery {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .header-inner,
  .site-main,
  .footer-columns,
  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }

  .module {
    padding: 36px 16px;
  }

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

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

  .rank {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .ranking-list li {
    gap: 12px;
  }

  .featured-info {
    padding: 18px;
  }

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

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

  .error-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }
}