/* =========================================================
   base — 全局基础样式
   ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: #2c3e50;
  background-color: #f8f9fa;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #2c3e50;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #e74c3c;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

/* =========================================================
   layout — 全站布局骨架
   ========================================================= */
.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e8eb;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

.site-footer {
  background-color: #ecf0f1;
  border-top: 1px solid #dfe4e8;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 32px;
}

/* =========================================================
   components — 品牌、导航、页脚、面包屑、页标题
   ========================================================= */
.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: 0;
}

.brand-slogan {
  font-size: 0.75rem;
  color: #7f8c8d;
  margin-top: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  border-radius: 6px;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #2c3e50;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: block;
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  color: #34495e;
}

.nav-list li a:hover {
  color: #e74c3c;
  background-color: #f8f9fa;
}

.nav-list li a.is-current {
  color: #e74c3c;
  background-color: #fdf0ef;
  font-weight: 600;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: #7f8c8d;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e5e8eb;
}

.breadcrumb a {
  color: #7f8c8d;
}

.breadcrumb a:hover {
  color: #e74c3c;
}

.breadcrumb-sep {
  color: #bdc3c7;
}

.breadcrumb-current {
  color: #2c3e50;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #2c3e50;
  line-height: 1.3;
  margin-bottom: 12px;
}

.page-description {
  font-size: 1rem;
  color: #5d6d7e;
  max-width: 720px;
  line-height: 1.7;
}

/* 页脚 */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.footer-brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: #2c3e50;
}

.footer-tagline {
  font-size: 0.875rem;
  color: #7f8c8d;
}

.footer-nav {
  margin-bottom: 24px;
}

.footer-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-nav-list li a {
  font-size: 0.875rem;
  color: #5d6d7e;
  padding: 4px 0;
}

.footer-nav-list li a:hover {
  color: #e74c3c;
}

.footer-meta {
  font-size: 0.8125rem;
  color: #95a5a6;
  border-top: 1px solid #dfe4e8;
  padding-top: 20px;
}

/* =========================================================
   components — 通用模块
   ========================================================= */
.section-intro {
  font-size: 0.9375rem;
  color: #5d6d7e;
  margin-bottom: 24px;
  max-width: 680px;
}

.section-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 12px;
  line-height: 1.4;
}

.section-more-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #e74c3c;
}

.section-more-link:hover {
  color: #c0392b;
}

/* 相关链接模块 */
.related-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #e5e8eb;
}

.related-links h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 16px;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-list li a {
  display: inline-block;
  padding: 8px 16px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 6px;
  font-size: 0.9375rem;
  color: #34495e;
}

.related-list li a:hover {
  border-color: #e74c3c;
  color: #e74c3c;
}

/* =========================================================
   pages — 首页
   ========================================================= */
.home-main {
  width: 100%;
}

/* hero */
.hero-section {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e8eb;
}

.hero-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #2c3e50;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.125rem;
  font-weight: 500;
  color: #e74c3c;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 1rem;
  color: #5d6d7e;
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-cta {
  display: inline-block;
  padding: 12px 28px;
  background-color: #e74c3c;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.hero-cta:hover {
  background-color: #c0392b;
  color: #ffffff;
}

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

.hero-figure {
  width: 100%;
  max-width: 480px;
  border-radius: 8px;
  overflow: hidden;
  background-color: #ecf0f1;
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* 首页分类导航 */
.category-nav-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 56px;
}

.category-tags {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.category-tags li a {
  display: block;
  padding: 20px 24px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  text-align: center;
  transition: border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.category-tags li a:hover {
  border-color: #e74c3c;
  color: #e74c3c;
  box-shadow: 0 2px 12px rgba(231, 76, 60, 0.08);
}

/* 首页最近更新 */
.recent-updates-section {
  background-color: #ffffff;
  border-top: 1px solid #e5e8eb;
  border-bottom: 1px solid #e5e8eb;
}

.recent-updates-section .section-intro,
.recent-updates-section h2 {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.recent-updates-section .section-intro {
  margin-bottom: 32px;
}

.recent-updates-section h2 {
  padding-top: 48px;
  margin-bottom: 12px;
}

.update-group {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.update-group h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #f39c12;
  display: inline-block;
}

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

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
  background-color: #f8f9fa;
  border-radius: 8px;
  border: 1px solid #eef0f2;
}

.update-item img {
  width: 72px;
  height: 96px;
  object-fit: cover;
  border-radius: 6px;
  background-color: #ecf0f1;
  flex-shrink: 0;
}

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

.update-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #2c3e50;
  line-height: 1.4;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.update-chapter {
  display: block;
  font-size: 0.8125rem;
  color: #7f8c8d;
}

/* 首页人气榜单预览 */
.ranking-preview-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 56px;
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  transition: box-shadow 0.2s ease;
}

.ranking-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.rank-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #f39c12;
  width: 44px;
  flex-shrink: 0;
  text-align: center;
}

.ranking-item img {
  width: 56px;
  height: 72px;
  object-fit: cover;
  border-radius: 6px;
  background-color: #ecf0f1;
  flex-shrink: 0;
}

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

.ranking-title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 4px;
}

.ranking-reason {
  font-size: 0.875rem;
  color: #7f8c8d;
  line-height: 1.6;
}

/* 首页阅读指南入口 */
.guide-entry-section {
  background-color: #ffffff;
  border-top: 1px solid #e5e8eb;
}

.guide-entry-section > h2,
.guide-entry-section > .section-intro {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.guide-entry-section > h2 {
  padding-top: 48px;
  margin-bottom: 12px;
}

.guide-cards {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.guide-card {
  padding: 32px;
  background-color: #f8f9fa;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
}

.guide-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 12px;
}

.guide-card p {
  font-size: 0.9375rem;
  color: #5d6d7e;
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-link {
  display: inline-block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #e74c3c;
}

.card-link:hover {
  color: #c0392b;
}

/* 首页 FAQ 入口 */
.faq-entry-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.faq-entry-section p {
  font-size: 0.9375rem;
  color: #5d6d7e;
  text-align: center;
}

.faq-entry-section p a {
  color: #e74c3c;
  font-weight: 500;
}

.faq-entry-section p a:hover {
  color: #c0392b;
}

/* =========================================================
   pages — 分类页
   ========================================================= */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.category-card {
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.category-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.category-card-media {
  background-color: #ecf0f1;
}

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

.category-card-body {
  padding: 20px 20px 24px;
}

.category-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 8px;
}

.category-card-desc {
  font-size: 0.875rem;
  color: #5d6d7e;
  line-height: 1.7;
}

/* 分类说明 */
.category-explanation-module {
  margin-bottom: 48px;
  padding: 32px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
}

.explanation-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.explanation-content p {
  font-size: 0.9375rem;
  color: #5d6d7e;
  line-height: 1.8;
}

/* 分类页相关链接 */
.related-links-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-link-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 24px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  transition: border-color 0.2s ease;
}

.related-link-card:hover {
  border-color: #e74c3c;
}

.related-link-title {
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
}

.related-link-desc {
  font-size: 0.875rem;
  color: #7f8c8d;
}

/* =========================================================
   pages — 阅读指南页
   ========================================================= */
.guide-layout {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.guide-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: start;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  padding: 32px;
}

.guide-media {
  background-color: #ecf0f1;
  border-radius: 8px;
  overflow: hidden;
}

.guide-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 12px 16px;
  font-size: 0.8125rem;
  color: #7f8c8d;
  background-color: #f8f9fa;
}

.guide-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 12px;
}

.guide-content > p {
  font-size: 0.9375rem;
  color: #5d6d7e;
  line-height: 1.8;
  margin-bottom: 16px;
}

.guide-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}

.guide-list li {
  font-size: 0.9375rem;
  color: #34495e;
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}

.guide-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background-color: #f39c12;
  border-radius: 2px;
}

.guide-list strong {
  color: #2c3e50;
  font-weight: 600;
}

.guide-list a {
  color: #e74c3c;
  font-weight: 500;
}

.guide-list a:hover {
  color: #c0392b;
}

/* =========================================================
   pages — 最近更新页
   ========================================================= */
.update-section {
  margin-bottom: 48px;
}

.update-section .section-intro a {
  color: #e74c3c;
  font-weight: 500;
}

.update-section .section-intro a:hover {
  color: #c0392b;
}

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

.update-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  transition: box-shadow 0.2s ease;
}

.update-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.update-cover {
  flex-shrink: 0;
  background-color: #ecf0f1;
  border-radius: 6px;
  overflow: hidden;
}

.update-cover img {
  width: 88px;
  height: 120px;
  object-fit: cover;
}

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

.update-title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  line-height: 1.4;
  margin-bottom: 6px;
}

.update-meta {
  font-size: 0.8125rem;
  color: #7f8c8d;
  margin-bottom: 8px;
}

.update-desc {
  font-size: 0.875rem;
  color: #5d6d7e;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 更新页相关链接 */
.related-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-link-list li a {
  display: inline-block;
  padding: 8px 16px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 6px;
  font-size: 0.9375rem;
  color: #34495e;
}

.related-link-list li a:hover {
  border-color: #e74c3c;
  color: #e74c3c;
}

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

.section-desc {
  font-size: 0.9375rem;
  color: #5d6d7e;
  margin-bottom: 24px;
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 20px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  transition: box-shadow 0.2s ease;
}

.ranking-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.ranking-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: #f39c12;
  width: 48px;
  flex-shrink: 0;
  text-align: center;
}

.ranking-cover {
  flex-shrink: 0;
  background-color: #ecf0f1;
  border-radius: 6px;
  overflow: hidden;
}

.ranking-cover img {
  width: 64px;
  height: 84px;
  object-fit: cover;
}

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

.ranking-info h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 4px;
}

.ranking-reason {
  font-size: 0.875rem;
  color: #7f8c8d;
  line-height: 1.6;
}

/* 编辑推荐 */
.editor-picks {
  margin-bottom: 48px;
}

.picks-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.pick-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
}

.pick-cover {
  flex-shrink: 0;
  background-color: #ecf0f1;
  border-radius: 6px;
  overflow: hidden;
}

.pick-cover img {
  width: 72px;
  height: 96px;
  object-fit: cover;
}

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

.pick-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 6px;
}

.pick-reason {
  font-size: 0.875rem;
  color: #5d6d7e;
  line-height: 1.6;
}

/* =========================================================
   pages — 常见问题页
   ========================================================= */
.faq-section {
  margin-bottom: 48px;
}

.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: #ffffff;
  border: 1px solid #e5e8eb;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.375rem;
  font-weight: 400;
  color: #7f8c8d;
  transition: transform 0.2s ease;
}

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

.faq-item summary:hover {
  color: #e74c3c;
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: #5d6d7e;
  line-height: 1.8;
}

.faq-answer p {
  padding-top: 4px;
  border-top: 1px solid #f0f2f4;
}

/* =========================================================
   pages — 404 页
   ========================================================= */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

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

.error-code {
  font-size: 5rem;
  font-weight: 700;
  color: #e74c3c;
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 1rem;
  color: #5d6d7e;
  line-height: 1.7;
  margin-bottom: 32px;
}

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

.error-btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: #e74c3c;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: #c0392b;
  color: #ffffff;
}

.error-btn-secondary {
  background-color: #ffffff;
  color: #2c3e50;
  border: 1px solid #e5e8eb;
}

.error-btn-secondary:hover {
  border-color: #e74c3c;
  color: #e74c3c;
  background-color: #ffffff;
}

/* =========================================================
   responsive — 响应式
   ========================================================= */
@media (max-width: 1024px) {
  .hero-layout {
    gap: 32px;
    padding: 48px 24px;
  }

  .hero-copy h1 {
    font-size: 1.875rem;
  }

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

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

  .guide-media {
    max-width: 480px;
  }
}

@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: #ffffff;
    border-bottom: 1px solid #e5e8eb;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.has-open {
    max-height: 360px;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
  }

  .nav-list li a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px;
  }

  .hero-copy h1 {
    font-size: 1.625rem;
  }

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

  .category-nav-section,
  .ranking-preview-section,
  .faq-entry-section {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .recent-updates-section .section-intro,
  .recent-updates-section h2,
  .guide-entry-section > h2,
  .guide-entry-section > .section-intro {
    padding-left: 16px;
    padding-right: 16px;
  }

  .update-group {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .guide-cards {
    grid-template-columns: 1fr;
    padding-left: 16px;
    padding-right: 16px;
  }

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

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

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

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

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

  .guide-section {
    padding: 24px;
  }

  .guide-figure img {
    height: 200px;
  }

  .update-card {
    padding: 12px;
  }

  .update-cover img {
    width: 72px;
    height: 100px;
  }

  .ranking-item {
    gap: 12px;
    padding: 12px;
  }

  .ranking-number {
    width: 36px;
    font-size: 1.375rem;
  }

  .ranking-cover img {
    width: 52px;
    height: 72px;
  }

  .footer-inner {
    padding: 32px 16px 24px;
  }

  .footer-nav-list {
    gap: 8px 16px;
  }

  .error-main {
    padding: 48px 16px;
  }

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

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

  .brand-name {
    font-size: 1.0625rem;
  }

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

  .category-tags li a {
    padding: 16px 20px;
  }

  .update-item {
    padding: 10px;
  }

  .update-item img {
    width: 64px;
    height: 88px;
  }

  .guide-card {
    padding: 24px 20px;
  }

  .guide-section {
    padding: 20px 16px;
  }

  .guide-figure img {
    height: 180px;
  }

  .guide-list li {
    padding-left: 16px;
  }

  .ranking-item {
    flex-wrap: wrap;
  }

  .ranking-info {
    flex-basis: calc(100% - 150px);
  }

  .ranking-reason {
    font-size: 0.8125rem;
  }

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

  .pick-cover img {
    width: 100%;
    height: 160px;
  }

  .faq-item summary {
    padding: 16px 44px 16px 16px;
    font-size: 0.9375rem;
  }

  .faq-item summary::after {
    right: 16px;
  }

  .faq-answer {
    padding: 0 16px 16px;
  }

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

  .error-btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }
}