/* ==========================================================================
   base — 全局基础
   ========================================================================== */

:root {
  --color-bg: #f5f7f5;
  --color-primary: #3a5a40;
  --color-secondary: #a3b18a;
  --color-white: #ffffff;
  --color-text: #333333;
  --color-text-light: #6b7a6e;
  --color-border: #e2e8e2;
  --color-bg-card: #ffffff;
  --color-bg-soft: #edf1ed;
  --color-accent: #588157;
  --color-danger: #c96a5a;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --container-width: 1200px;
  --header-height: 68px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

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

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

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

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

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: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

/* 通用容器 */
.site-main {
  min-height: 60vh;
}

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

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

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

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

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

.brand-tagline {
  font-size: 13px;
  color: var(--color-text-light);
}

.site-nav {
  margin-left: auto;
}

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

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

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

.nav-list a.is-current {
  color: var(--color-white);
  background-color: var(--color-primary);
  font-weight: 500;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* 公告条 */
.notice-bar {
  background-color: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 8px 24px;
  font-size: 14px;
  position: relative;
}

.notice-text {
  margin: 0;
}

.notice-close {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: var(--color-white);
  font-size: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition);
}

.notice-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

.notice-bar.is-hidden {
  display: none;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 14px;
  color: var(--color-text-light);
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

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

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

/* 页标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 28px 24px 4px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

/* 内页主容器 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 20px;
}

.footer-brand {
  margin-bottom: 28px;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 480px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  margin-bottom: 20px;
}

.footer-group-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
}

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

.footer-group a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  transition: color var(--transition);
}

.footer-group a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer-bottom {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding-top: 16px;
}

.footer-bottom p {
  margin: 0;
}

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

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--transition), transform var(--transition);
  cursor: pointer;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--color-bg-soft);
}

/* 区块标题 */
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 680px;
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 680px;
}

/* 漫画封面卡 */
.comic-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

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

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

.comic-card .comic-title {
  font-size: 15px;
  font-weight: 600;
  padding: 12px 14px 4px;
}

.comic-card .comic-meta {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 0 14px 12px;
}

.update-status {
  display: inline-block;
  background-color: var(--color-secondary);
  color: var(--color-white);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin: 0 14px 12px;
  align-self: flex-start;
}

/* 封面卡（题材页） */
.cover-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}

.cover-card:hover {
  transform: translateY(-3px);
}

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

.cover-card figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 10px 12px;
  text-align: center;
  background-color: var(--color-white);
}

/* FAQ */
.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 40px;
  transition: background-color var(--transition);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-primary);
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item[open] summary {
  background-color: var(--color-bg-soft);
}

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

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

/* 首屏 */
.hero-section {
  background-color: var(--color-bg);
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 480px;
}

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

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

.hero-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.hero-image {
  width: 100%;
  max-width: 440px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* 快速入口 */
.quick-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.entry-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.entry-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.entry-icon {
  font-size: 24px;
  margin-bottom: 6px;
}

.entry-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.entry-note {
  font-size: 13px;
  color: var(--color-text-light);
}

/* 题材分类导航 */
.topic-nav-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.topic-tag {
  display: inline-block;
  background-color: var(--color-white);
  border: 1px solid var(--color-secondary);
  color: var(--color-primary);
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: background-color var(--transition), color var(--transition);
}

.topic-tag:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* 最近更新 */
.recent-updates {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

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

.update-date {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--color-secondary);
  display: inline-block;
}

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

/* 人气榜单 */
.popular-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

.rank-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.rank-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.rank-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.rank-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1;
}

.rank-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.rank-reason {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.5;
}

/* 阅读指南入口 */
.guide-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

.guide-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.guide-card {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background-color var(--transition), transform var(--transition);
}

.guide-card:hover {
  background-color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.guide-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}

.guide-card-text {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

.guide-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: 8px;
}

/* 长尾推荐预告 */
.feature-topic {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 56px;
  border-top: 1px solid var(--color-border);
}

.topic-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.topic-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

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

.topic-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 16px 20px 4px;
}

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

.topic-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 12px 20px 20px;
}

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

.topic-intro {
  padding: 24px 0;
}

.topic-intro p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 760px;
}

.topic-grid {
  padding: 24px 0;
}

.topic-block {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.topic-block-header {
  margin-bottom: 20px;
}

.topic-block-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.topic-block-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

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

.topic-tips {
  padding: 24px 0;
}

.topic-tips p {
  font-size: 15px;
  color: var(--color-text-light);
}

.topic-tips a {
  margin-right: 16px;
  font-weight: 500;
}

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

.guide-section {
  padding: 24px 0;
}

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

.step-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  align-items: center;
}

.step-media {
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.step-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

.step-content a {
  font-weight: 500;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tip-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-secondary);
}

.tip-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.tip-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

/* ==========================================================================
   pages — 长尾推荐页（恋爱 / 职场）
   ========================================================================== */

.recommend-list,
.recommend-section {
  padding: 24px 0;
}

.recommend-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  align-items: start;
}

.recommend-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.recommend-cover,
.recommend-media {
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.recommend-info,
.recommend-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recommend-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}

.recommend-meta,
.recommend-author {
  font-size: 13px;
  color: var(--color-text-light);
}

.recommend-desc {
  font-size: 14px;
  color: var(--color-text);
  margin: 0;
}

.recommend-reason {
  font-size: 14px;
  color: var(--color-text-light);
  background-color: var(--color-bg-soft);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin: 0;
}

.recommend-reason strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* 相关链接 */
.related-links {
  padding: 24px 0;
}

.related-links p {
  font-size: 15px;
  color: var(--color-text-light);
}

.related-links a {
  margin-right: 16px;
  font-weight: 500;
}

/* 职场洞察 */
.insight-section {
  padding: 24px 0;
}

.insight-section p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 760px;
}

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

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

.error-section h1 {
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

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

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

@media (max-width: 992px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 36px;
  }

  .hero-media {
    order: -1;
  }

  .hero-image {
    max-width: 100%;
  }

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

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

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

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav .nav-list {
    flex-direction: column;
    padding: 8px 16px 16px;
    gap: 0;
  }

  .site-nav .nav-list a {
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

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

  .site-nav .nav-list a.is-current {
    background-color: transparent;
    color: var(--color-primary);
    font-weight: 600;
  }

  .site-nav.is-open {
    max-height: 400px;
  }

  .hero-section {
    padding: 32px 16px 24px;
  }

  .hero-title {
    font-size: 26px;
  }

  .quick-entry {
    grid-template-columns: 1fr;
    padding: 0 16px 32px;
  }

  .topic-nav-section,
  .recent-updates,
  .popular-list,
  .guide-entry,
  .feature-topic {
    padding: 32px 16px;
  }

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

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

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

  .inner-main {
    padding: 0 16px 40px;
  }

  .breadcrumb {
    padding: 12px 16px 0;
  }

  .page-header {
    padding: 24px 16px 4px;
  }

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

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

  .step-item {
    grid-template-columns: 1fr;
  }

  .step-media {
    max-width: 100%;
  }

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

  .recommend-item {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    padding: 32px 16px 16px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-group {
    margin-bottom: 8px;
  }
}

@media (max-width: 480px) {
  .brand-tagline {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

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

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

  .topic-tags {
    gap: 8px;
  }

  .topic-tag {
    padding: 8px 18px;
    font-size: 14px;
  }

  .topic-covers {
    grid-template-columns: 1fr;
  }

  .topic-block {
    padding: 20px;
  }

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

/* ==========================================================================
   动效增强（不影响初始可见性）
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .comic-card,
  .rank-item,
  .topic-card,
  .guide-card,
  .entry-card,
  .recommend-item {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
}