/* ============================================================
   base / 基础样式
   ============================================================ */
:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #2c3e50;
  --color-primary: #e74c3c;
  --color-primary-dark: #c0392b;
  --color-text-light: #6b7a8d;
  --color-border: #e3e8ee;
  --color-tag-bg: #fdeeea;
  --color-tag-text: #e74c3c;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 3px rgba(44, 62, 80, 0.08);
  --shadow-md: 0 4px 12px rgba(44, 62, 80, 0.08);
  --container-width: 1200px;
  --header-height: 64px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

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

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

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

a:hover {
  color: var(--color-primary-dark);
}

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.125rem;
}

p {
  margin-bottom: 1rem;
}

/* ============================================================
   layout / 全站布局骨架
   ============================================================ */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

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

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0;
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 0.9375rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

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

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

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
}

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

.footer-brand .footer-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.footer-brand p {
  margin-top: 8px;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.footer-links h3 {
  font-size: 0.9375rem;
  margin-bottom: 12px;
}

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

.footer-links ul li a {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.footer-links ul li a:hover {
  color: var(--color-primary);
}

.footer-copy {
  text-align: center;
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* 面包屑 */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: #b0b8c4;
}

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

/* 页面标题区 */
.page-header {
  padding: 24px 0 32px;
}

.page-title {
  font-size: 1.875rem;
  margin-bottom: 8px;
}

.page-description {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 720px;
  line-height: 1.6;
}

/* ============================================================
   components / 通用组件
   ============================================================ */
/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

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

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

/* 区块标题与描述 */
.section-title,
.section-desc {
  margin-bottom: 8px;
}

.section-desc {
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

.section-link {
  margin-top: 24px;
  text-align: center;
}

.section-link a {
  font-size: 0.9375rem;
  font-weight: 500;
}

/* 封面图容器 */
figure {
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
}

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

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

.faq-item summary {
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  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: 1.25rem;
  color: var(--color-primary);
  font-weight: 400;
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 相关推荐链接 */
.related-links li {
  margin-bottom: 8px;
}

.related-links li a {
  font-size: 0.9375rem;
}

/* ============================================================
   pages / index 首页
   ============================================================ */
/* 首屏 */
.home-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
}

.hero-text h1 {
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.hero-text p {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.hero-figure {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
}

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

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

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.tag-item {
  display: inline-block;
  padding: 8px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.tag-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-tag-bg);
}

/* 最近更新 */
.home-recent {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.update-group h3 {
  font-size: 1.0625rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.update-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.update-item {
  display: flex;
  gap: 16px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 12px;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease;
}

.update-item:hover {
  box-shadow: var(--shadow-md);
}

.update-item img {
  width: 96px;
  height: 128px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.update-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.update-title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.update-title:hover {
  color: var(--color-primary);
}

.update-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.update-status {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-primary);
  background-color: var(--color-tag-bg);
  padding: 2px 10px;
  border-radius: 999px;
  align-self: flex-start;
}

/* 人气榜单预览 */
.home-ranking {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.ranking-list {
  margin-top: 16px;
}

.ranking-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.rank-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 40px;
  text-align: center;
  line-height: 1.2;
}

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

.rank-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}

.rank-title:hover {
  color: var(--color-primary);
}

.rank-reason {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: 4px;
  margin-bottom: 0;
}

/* 阅读指南入口 */
.home-guide {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.guide-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.guide-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: box-shadow 0.2s ease;
}

.guide-card:hover {
  box-shadow: var(--shadow-md);
}

.guide-card h3 {
  margin-bottom: 8px;
}

.guide-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.9375rem;
}

/* 内容说明 */
.home-notice {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.home-notice p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: 0;
}

/* ============================================================
   pages / categories 题材分类页
   ============================================================ */
.category-list {
  padding-bottom: 48px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

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

.category-card:hover {
  box-shadow: var(--shadow-md);
}

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

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

.category-card-body h3 {
  margin-bottom: 8px;
}

.category-card-body p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.6;
}

.reading-tip {
  font-size: 0.8125rem;
  color: var(--color-primary);
  background-color: var(--color-tag-bg);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-top: 4px;
}

.category-detail {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.detail-block {
  margin-bottom: 32px;
}

.detail-block h3 {
  margin-bottom: 12px;
}

.detail-list {
  margin-bottom: 12px;
}

.detail-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

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

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

.category-tips {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.tips-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   pages / guide 阅读指南页
   ============================================================ */
.guide-hero {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
  padding-bottom: 48px;
}

.guide-figure {
  aspect-ratio: 4 / 3;
}

.guide-intro p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.guide-steps {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.steps-list {
  margin-top: 24px;
}

.step-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.step-card:last-child {
  border-bottom: none;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
}

.step-card h3 {
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}

.guide-tips-detail {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.tips-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.tip-block {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.tip-block h3 {
  margin-bottom: 8px;
}

.tip-block p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.tips-more {
  margin-top: 24px;
}

.guide-faq {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.guide-faq .section-desc a {
  margin-right: 16px;
}

.guide-related {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.guide-related p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.guide-related .related-links {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

/* ============================================================
   pages / recent 最近更新页
   ============================================================ */
.update-list-section {
  padding-bottom: 48px;
}

.update-day-group {
  margin-bottom: 40px;
}

.update-date {
  font-size: 1.125rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.update-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.update-card {
  display: flex;
  gap: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  transition: box-shadow 0.2s ease;
}

.update-card:hover {
  box-shadow: var(--shadow-md);
}

.update-card img {
  width: 96px;
  height: 128px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.update-card .update-info {
  flex: 1;
  min-width: 0;
}

.status-guide {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.status-guide p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   pages / ranking 人气榜单页
   ============================================================ */
.ranking-list-section {
  padding-bottom: 48px;
}

.ranking-list-section .ranking-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  gap: 24px;
}

.ranking-media {
  width: 120px;
  aspect-ratio: 3 / 4;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

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

.ranking-info {
  flex: 1;
  min-width: 0;
}

.ranking-info h3 {
  margin-bottom: 8px;
}

.ranking-tag {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--color-primary);
  background-color: var(--color-tag-bg);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.ranking-desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.editor-picks {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.editor-picks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.editor-pick-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.editor-pick-card h3 {
  margin-bottom: 8px;
}

.editor-pick-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.editor-note {
  margin-top: 24px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.editor-note a {
  margin-right: 16px;
}

.related-reading {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.related-reading p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.related-reading .related-links {
  margin-top: 16px;
}

/* ============================================================
   pages / tips 追更技巧页
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
  padding-bottom: 48px;
}

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

.article-body .article-section {
  margin-bottom: 48px;
}

.article-section h2 {
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.article-section p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.article-section h3 {
  margin: 16px 0 8px;
  font-size: 1.0625rem;
}

.article-figure {
  aspect-ratio: 16 / 9;
  margin: 16px 0;
}

.article-figure figcaption {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  text-align: center;
  padding: 8px 0;
}

.tool-list {
  margin-top: 12px;
}

.tool-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
  color: var(--color-text-light);
  position: relative;
  padding-left: 20px;
}

.tool-list li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-primary);
  font-weight: 700;
}

.related-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.related-links h2 {
  font-size: 1.0625rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.related-links ul li {
  margin-bottom: 12px;
}

.related-links ul li a {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.5;
}

.related-links ul li a:hover {
  color: var(--color-primary);
}

/* ============================================================
   pages / 404
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-container {
  text-align: center;
  max-width: 480px;
}

.error-container h1 {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

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

.error-home-link {
  display: inline-block;
  padding: 10px 32px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.error-home-link:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

.error-help {
  margin-top: 16px;
  font-size: 0.875rem;
}

.error-help a {
  margin: 0 8px;
}

/* ============================================================
   responsive / 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .related-links {
    order: 2;
  }
}

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

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

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    box-shadow: var(--shadow-md);
  }

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

  .nav-list li a {
    padding: 12px 24px;
    border-radius: 0;
  }

  .home-hero {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

  .hero-figure {
    aspect-ratio: 16 / 10;
  }

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

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

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

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

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

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

  .step-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .step-num {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

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

  .editor-picks-grid {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 480px) {
  .brand-name {
    font-size: 1.0625rem;
  }

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

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

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

  .page-title {
    font-size: 1.5rem;
  }

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

  .update-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
  }

  .update-card {
    flex-direction: column;
  }

  .update-card img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
  }

  .guide-card {
    padding: 24px;
  }

  .tip-block {
    padding: 20px;
  }

  .category-card-body {
    padding: 16px;
  }

  .editor-pick-card {
    padding: 20px;
  }

  .faq-item summary {
    padding: 14px 16px;
    padding-right: 36px;
  }

  .faq-item p {
    padding: 0 16px 14px;
  }

  .related-links {
    padding: 20px;
  }
}

/* 滚动出现动画（增强，不影响初始可见性） */
@media (prefers-reduced-motion: no-preference) {
  .home-categories,
  .home-recent,
  .home-ranking,
  .home-guide,
  .category-grid .category-card,
  .tips-grid .tip-block,
  .editor-picks-grid .editor-pick-card,
  .steps-list .step-card {
    animation: fadeInUp 0.5s ease both;
  }

  .home-recent {
    animation-delay: 0.05s;
  }

  .home-ranking {
    animation-delay: 0.1s;
  }

  .home-guide {
    animation-delay: 0.15s;
  }

  .category-grid .category-card:nth-child(2),
  .tips-grid .tip-block:nth-child(2),
  .editor-picks-grid .editor-pick-card:nth-child(2) {
    animation-delay: 0.05s;
  }

  .category-grid .category-card:nth-child(3),
  .tips-grid .tip-block:nth-child(3),
  .editor-picks-grid .editor-pick-card:nth-child(3) {
    animation-delay: 0.1s;
  }

  .category-grid .category-card:nth-child(4),
  .tips-grid .tip-block:nth-child(4),
  .editor-picks-grid .editor-pick-card:nth-child(4) {
    animation-delay: 0.15s;
  }

  .category-grid .category-card:nth-child(5) {
    animation-delay: 0.2s;
  }

  .category-grid .category-card:nth-child(6) {
    animation-delay: 0.25s;
  }

  .steps-list .step-card:nth-child(2) {
    animation-delay: 0.05s;
  }

  .steps-list .step-card:nth-child(3) {
    animation-delay: 0.1s;
  }

  .steps-list .step-card:nth-child(4) {
    animation-delay: 0.15s;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}