/* ============================================================
   BASE — 变量、重置、全局基础
   ============================================================ */
:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-accent: #e63946;
  --color-border: #e0e0e0;
  --font-heading: Georgia, "Times New Roman", serif;
  --font-body: Arial, "Helvetica Neue", sans-serif;
  --container-width: 1200px;
  --container-wide: 1440px;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.2rem;
}

p {
  margin-bottom: 1rem;
}

/* ============================================================
   LAYOUT — 全站共用布局骨架
   ============================================================ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.site-nav .nav-list {
  display: flex;
  gap: 32px;
  align-items: center;
}

.site-nav .nav-list a {
  font-size: 0.95rem;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

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

.site-nav .nav-list a.is-current {
  color: var(--color-accent);
  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;
  justify-content: center;
  align-items: center;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition);
}

.site-main {
  flex: 1;
}

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

.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-title {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

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

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

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

.footer-meta p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.copyright {
  margin-top: 8px;
  font-size: 0.8rem;
  color: #999;
}

/* 内页通用骨架 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

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

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

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

.breadcrumb-sep {
  color: #ccc;
}

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

.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 2rem;
  margin-bottom: 12px;
}

.page-description {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.8;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.section-intro {
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 640px;
}

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  min-height: 44px;
  transition: background-color var(--transition), border-color var(--transition);
}

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

.btn-primary:hover {
  background-color: #c92a35;
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-text);
  color: var(--color-text);
}

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

.card-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 12px;
}

.card-link:hover {
  text-decoration: underline;
}

.tag {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.875rem;
  white-space: nowrap;
  transition: border-color var(--transition), color var(--transition);
}

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

/* ============================================================
   PAGES — 首页
   ============================================================ */
.home-main {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* Hero */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 64px 0 48px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-content h1 {
  font-size: 2.4rem;
  line-height: 1.25;
  max-width: 560px;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 480px;
  line-height: 1.8;
}

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

.hero-media {
  position: relative;
}

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

.hero-figure img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* 分类导航带 */
.category-strip {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.category-tags {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 0 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  -webkit-overflow-scrolling: touch;
}

.category-tags .tag {
  flex-shrink: 0;
}

/* 最近更新 */
.recent-updates {
  padding: 48px 0;
}

.update-group {
  margin-bottom: 36px;
}

.update-date {
  font-size: 1rem;
  color: var(--color-text-light);
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

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

.update-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}

.update-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

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

.update-card h4 {
  font-size: 1rem;
  padding: 12px 16px 4px;
  font-family: var(--font-body);
  font-weight: 700;
}

.update-status {
  display: inline-block;
  padding: 0 16px 16px;
  font-size: 0.8rem;
  color: var(--color-accent);
}

/* 人气榜单 */
.ranking-preview {
  padding: 48px 0;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ranking-item {
  display: flex;
  gap: 16px;
  align-items: center;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}

.ranking-item img {
  width: 96px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.ranking-info {
  flex: 1;
}

.ranking-info h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: 4px;
}

.ranking-info p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.ranking-info a {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 700;
}

/* 指南入口 */
.guide-entry {
  padding: 48px 0;
}

.guide-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.guide-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.guide-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.guide-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* 长尾专题预告 */
.longtail-preview {
  padding: 48px 0;
}

.topic-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.topic-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.topic-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.topic-card h3 {
  font-size: 1.2rem;
  padding: 16px 20px 8px;
}

.topic-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding: 0 20px;
  margin-bottom: 0;
}

.topic-card .card-link {
  margin: 12px 20px 20px;
}

/* ============================================================
   PAGES — 分类页
   ============================================================ */
.layout-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}

.layout-shell.sidebar-left {
  grid-template-columns: 260px 1fr;
}

.layout-shell.sidebar-left .category-sidebar {
  grid-column: 1;
}

.layout-shell.sidebar-left .category-detail {
  grid-column: 2;
}

.category-sidebar {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 96px;
}

.sidebar-title {
  font-size: 1.1rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.category-index-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.category-index-list a {
  display: block;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.category-index-list a:hover {
  background-color: var(--color-bg);
  color: var(--color-accent);
}

.category-section {
  margin-bottom: 40px;
}

.category-section > h2 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.category-item {
  display: flex;
  gap: 20px;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.category-item img {
  width: 160px;
  height: 110px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.category-info {
  flex: 1;
}

.category-info h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.category-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.category-info a {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 700;
}

.category-note {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-top: 40px;
}

.category-note h2 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.category-note p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ============================================================
   PAGES — 阅读指南页
   ============================================================ */
.guide-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.guide-step {
  display: flex;
  gap: 20px;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.guide-step .step-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  flex-shrink: 0;
  min-width: 48px;
}

.guide-step h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.guide-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.guide-media {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.guide-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.guide-media figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  background-color: var(--color-surface);
}

.guide-faq {
  margin-top: 40px;
}

.faq-item {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.95rem;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--color-accent);
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.guide-related {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 96px;
}

.guide-related h2 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.guide-related ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.guide-related a {
  font-size: 0.9rem;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 1px solid var(--color-bg);
}

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

/* ============================================================
   PAGES — 长尾页 1（恋爱漫画推荐）
   ============================================================ */
.recommendation-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.recommend-card {
  display: flex;
  gap: 24px;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.recommend-media {
  flex-shrink: 0;
  width: 220px;
}

.recommend-media img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
}

.recommend-body {
  flex: 1;
}

.recommend-body h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.recommend-tag {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-accent);
  background-color: rgba(230, 57, 70, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.recommend-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.recommend-point {
  font-weight: 700;
  color: var(--color-text) !important;
}

.viewpoint-summary {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 40px;
  box-shadow: var(--shadow);
}

.viewpoint-summary h2 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.viewpoint-summary > p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.viewpoint-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
  margin: 16px 0;
}

.viewpoint-list li {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding-left: 20px;
  position: relative;
}

.viewpoint-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.viewpoint-list strong {
  color: var(--color-text);
}

.related-topics {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 40px;
  box-shadow: var(--shadow);
}

.related-topics h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.related-topics > p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.topic-links a {
  font-size: 0.875rem;
  color: var(--color-text);
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.topic-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   PAGES — 长尾页 2（热血漫画推荐）
   ============================================================ */
.section-block {
  margin-bottom: 48px;
}

.section-desc {
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 640px;
}

.work-card {
  display: flex;
  gap: 24px;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.work-cover {
  flex-shrink: 0;
  width: 200px;
}

.work-cover img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 4px;
}

.work-info {
  flex: 1;
}

.work-info h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

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

.work-tags .tag {
  font-size: 0.75rem;
  padding: 4px 10px;
}

.work-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

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

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

.feature-item h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.feature-item p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

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

.related-links a {
  font-size: 0.9rem;
  color: var(--color-text);
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow);
  transition: color var(--transition), box-shadow var(--transition);
}

.related-links a:hover {
  color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

/* ============================================================
   PAGES — 404
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  min-height: 60vh;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  width: 100%;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 48px 40px;
  box-shadow: var(--shadow);
}

.error-code {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.error-desc {
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.error-back {
  display: inline-block;
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.error-back:hover {
  background-color: #c92a35;
  color: #ffffff;
}

.error-help {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.error-links a {
  font-size: 0.85rem;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 999px;
}

.error-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   RESPONSIVE — 响应式断点
   ============================================================ */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 32px;
  }

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

  .hero-figure img {
    height: 320px;
  }

  .layout-shell,
  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .layout-shell.sidebar-left .category-sidebar,
  .layout-shell.sidebar-left .category-detail {
    grid-column: 1;
  }

  .category-sidebar {
    position: static;
  }

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

  .guide-related {
    position: static;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 16px;
  }

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

  .site-nav .nav-list a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-bg);
    width: 100%;
  }

  .site-nav .nav-list a.is-current {
    border-bottom: 1px solid var(--color-accent);
  }

  .home-main {
    padding: 0 16px 48px;
  }

  .hero-section {
    padding: 32px 0 24px;
  }

  .hero-content h1 {
    font-size: 1.7rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .hero-figure img {
    height: 240px;
  }

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

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

  .ranking-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .ranking-item img {
    width: 100%;
    height: 140px;
  }

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

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

  .page-title {
    font-size: 1.6rem;
  }

  .category-item {
    flex-direction: column;
  }

  .category-item img {
    width: 100%;
    height: 180px;
  }

  .recommend-card,
  .work-card {
    flex-direction: column;
  }

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

  .recommend-media img,
  .work-cover img {
    height: 200px;
    width: 100%;
  }

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

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

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

  .guide-step {
    flex-direction: column;
    gap: 12px;
  }

  .guide-step .step-number {
    font-size: 1.5rem;
  }

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

  .error-code {
    font-size: 3.5rem;
  }
}

@media (max-width: 390px) {
  .brand-name {
    font-size: 1.1rem;
  }

  .brand-tagline {
    display: none;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-lead {
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.3rem;
  }

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

  .topic-card img {
    height: 170px;
  }

  .category-item img {
    height: 150px;
  }

  .recommend-media img,
  .work-cover img {
    height: 170px;
  }

  .footer-inner {
    padding: 24px 16px 20px;
  }

  .error-links {
    flex-direction: column;
    width: 100%;
  }

  .error-links a {
    text-align: center;
  }
}