/* ==========================================================================
   蜜芽视频 · 全站样式表
   版本：1.0
   说明：覆盖首页、内页、404 页全部 DOM 结构，统一视觉与布局体系
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base —— 变量、重置、全局基础
   -------------------------------------------------------------------------- */
:root {
  /* 色彩体系 */
  --color-bg: #faf6ef;
  --color-text: #3e2f22;
  --color-text-secondary: #7a6a5b;
  --color-accent: #e07b39;
  --color-accent-dark: #c9661f;
  --color-card: #ffffff;
  --color-card-tint: #f2e3d3;
  --color-border: #e8dccb;
  --color-footer-bg: #2e241a;
  --color-footer-text: #c9b8a5;

  /* 字体与排版 */
  --font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --line-height-base: 1.7;
  --line-height-heading: 1.3;

  /* 布局 */
  --container-width: 1200px;
  --container-padding: 0 24px;
  --gap-base: 24px;
  --gap-sm: 16px;
  --gap-lg: 40px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* 阴影 */
  --shadow-card: 0 1px 4px rgba(62, 47, 34, 0.06);
  --shadow-hover: 0 6px 18px rgba(62, 47, 34, 0.1);

  /* 过渡 */
  --transition-base: 0.2s ease;
}

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

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

/* --------------------------------------------------------------------------
   2. Layout —— 全站骨架：页头、页脚、主容器、面包屑
   -------------------------------------------------------------------------- */

/* 页头 */
.site-header {
  background-color: var(--color-card);
  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: var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--gap-base);
}

.brand-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.5px;
}

.brand-link:hover {
  color: var(--color-accent);
}

.brand-name {
  display: inline-block;
}

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

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

.nav-list li {
  position: relative;
}

.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-base), color var(--transition-base);
}

.nav-list a:hover {
  color: var(--color-accent);
  background-color: var(--color-card-tint);
}

.nav-list a.is-current {
  color: var(--color-accent);
  background-color: var(--color-card-tint);
  font-weight: 600;
}

/* 移动端汉堡按钮（默认隐藏） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  gap: 5px;
}

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

/* 移动端展开状态 */
.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);
}

/* 主容器 */
.site-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
  padding-top: 40px;
  padding-bottom: 60px;
}

.site-main.home-main {
  max-width: 100%;
  padding: 0;
}

.site-main.inner-main {
  padding-top: 32px;
  padding-bottom: 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

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

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

.breadcrumb-sep {
  color: var(--color-border);
  font-size: 12px;
}

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

/* 页头标题区（内页） */
.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--color-text);
}

.page-description {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 780px;
  line-height: var(--line-height-base);
}

/* 页脚 */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-top: 48px;
  padding-bottom: 24px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-card);
  margin-bottom: 12px;
}

.footer-col p {
  font-size: var(--font-size-small);
  line-height: 1.8;
  color: var(--color-footer-text);
}

.footer-col a {
  color: var(--color-footer-text);
  font-size: var(--font-size-small);
  display: block;
  padding: 3px 0;
}

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

.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(201, 184, 165, 0.7);
}

/* --------------------------------------------------------------------------
   3. Components —— 通用组件：按钮、卡片、标签、区块标题
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

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

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

/* 区块标题 */
.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-head p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 720px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
}

/* 频道标签 */
.channel-tag {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.channel-tag:hover {
  background-color: var(--color-card-tint);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 更多链接 */
.more-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-base);
}

.more-link:hover {
  border-bottom-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   4. 首页专用模块
   -------------------------------------------------------------------------- */

/* 4.1 Hero 品牌陈述与主视觉 */
.hero-brand-visual {
  background-color: var(--color-card-tint);
  padding: 64px 24px;
}

.hero-brand-visual .hero-copy {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  max-width: 560px;
}

.hero-lead {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 540px;
}

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

.hero-visual {
  min-width: 0;
}

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

.hero-figure img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

/* 4.2 核心目录四入口 */
.core-directory {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 48px;
}

.dir-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.dir-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.dir-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-card-tint);
  border-radius: var(--radius-md);
  font-size: 22px;
  margin-bottom: 4px;
}

.dir-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.dir-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 4.3 频道分类索引 */
.channel-index {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.channel-index-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
}

.channel-tag-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: sticky;
  top: 80px;
}

.channel-tag-list .channel-tag {
  text-align: left;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  width: 100%;
}

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

.channel-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.channel-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.channel-card figure {
  overflow: hidden;
}

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

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

.channel-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.channel-card-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.channel-card-body a {
  font-size: 14px;
  font-weight: 600;
}

/* 4.4 最新内容 */
.latest-content {
  background-color: var(--color-card-tint);
  padding: 64px 24px;
}

.latest-content .section-head {
  max-width: var(--container-width);
  margin: 0 auto 28px;
}

.latest-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.latest-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.latest-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.latest-card figure {
  overflow: hidden;
}

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

.latest-body {
  padding: 20px;
}

.tag-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-card-tint);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.latest-body h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.latest-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 4.5 专题推荐 */
.featured-topics {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px;
}

.topic-large-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  transition: box-shadow var(--transition-base);
}

.topic-large-card:hover {
  box-shadow: var(--shadow-hover);
}

.topic-large-card figure {
  overflow: hidden;
  height: 100%;
  min-height: 260px;
}

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

.topic-large-body {
  padding: 32px;
}

.topic-number {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-card-tint);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.topic-large-body h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
}

.topic-large-body p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.topic-large-body a {
  font-weight: 600;
  font-size: 15px;
}

/* 4.6 排行摘要 */
.ranking-summary {
  background-color: var(--color-card-tint);
  padding: 64px 24px;
}

.ranking-summary .section-head {
  max-width: var(--container-width);
  margin: 0 auto 28px;
}

.ranking-list {
  max-width: var(--container-width);
  margin: 0 auto 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ranking-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 24px;
}

.rank-num {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  font-family: "SF Mono", "Consolas", monospace;
  min-width: 40px;
}

.rank-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  min-width: 120px;
}

.rank-reason {
  font-size: 14px;
  color: var(--color-text-secondary);
  flex: 1;
}

.ranking-summary .more-link {
  display: block;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* 4.7 观看指南摘要 */
.guide-summary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}

.guide-steps li {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 16px;
}

.step-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.guide-summary .more-link {
  display: block;
}

/* 4.8 反馈入口 */
.feedback-entry {
  background-color: var(--color-card-tint);
  padding: 64px 24px;
}

.feedback-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  text-align: center;
}

.feedback-inner h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}

.feedback-inner p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------------
   5. 内页通用模块
   -------------------------------------------------------------------------- */

/* 相关页面导航（内页底部） */
.page-next-links,
.page-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.next-link,
.page-nav-links a {
  display: inline-block;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.next-link:hover,
.page-nav-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 分页（专题页） */
.page-pagination {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.pagination-prev,
.pagination-next {
  display: inline-block;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.pagination-prev:hover,
.pagination-next:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 相关链接 */
.related-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.related-links-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 16px;
}

.related-links-item {
  display: inline-block;
  margin: 0 12px 8px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.related-links-item:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   6. 频道总览页（mysp/pindao.html）
   -------------------------------------------------------------------------- */

.channel-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

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

.channel-grid .channel-card {
  display: flex;
  flex-direction: column;
}

.channel-figure {
  overflow: hidden;
}

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

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

.channel-info h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.channel-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.channel-meta {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  padding: 12px 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
}

.channel-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  align-self: flex-start;
}

/* 频道选择建议 */
.choice-note {
  margin-top: 48px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.choice-note h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.choice-note p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.choice-note a {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. 专题片单页（mysp/zhuanti.html）
   -------------------------------------------------------------------------- */

.topic-card-list {
  margin-bottom: 48px;
}

.topic-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
  transition: box-shadow var(--transition-base);
}

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

.topic-media {
  overflow: hidden;
  min-height: 240px;
}

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

.topic-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.topic-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-card-tint);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.topic-name {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}

.topic-summary {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.topic-detail {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 6px;
}

.topic-detail strong {
  color: var(--color-accent);
  font-weight: 600;
  margin-right: 6px;
}

.topic-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  align-self: flex-start;
}

/* 专题使用说明 */
.topic-usage-note {
  background-color: var(--color-card-tint);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.usage-content {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.usage-content p {
  margin-bottom: 12px;
}

.usage-list {
  margin: 16px 0;
  padding-left: 4px;
}

.usage-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
}

.usage-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.usage-content a {
  font-weight: 600;
  margin-right: 16px;
}

/* --------------------------------------------------------------------------
   8. 热度排行页（mysp/paihang.html）
   -------------------------------------------------------------------------- */

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

/* 排序口径说明 */
.explain-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.explain-media {
  overflow: hidden;
  min-height: 240px;
}

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

.explain-text {
  padding: 32px;
}

.explain-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.explain-text strong {
  color: var(--color-text);
  font-weight: 600;
}

/* 排行榜表格 */
.table-wrap {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.ranking-table thead {
  background-color: var(--color-card-tint);
}

.ranking-table th {
  text-align: left;
  padding: 16px 20px;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text);
  white-space: nowrap;
}

.ranking-table td {
  padding: 16px 20px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
  line-height: 1.6;
  vertical-align: top;
}

.ranking-table tbody tr:nth-child(even) {
  background-color: rgba(242, 227, 211, 0.3);
}

.ranking-table tbody tr:hover {
  background-color: var(--color-card-tint);
}

.ranking-table td:first-child {
  font-family: "SF Mono", "Consolas", monospace;
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
}

/* 排序使用建议 */
.ranking-usage .usage-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.usage-list li strong {
  color: var(--color-accent);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   9. 观看指南页（mysp/zhinan.html）
   -------------------------------------------------------------------------- */

.guide-step-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.step-text {
  padding: 32px;
}

.step-text h2 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 12px;
}

.step-text > p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.step-list {
  margin: 16px 0;
}

.step-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  counter-increment: step-counter;
}

.step-list {
  counter-reset: step-counter;
}

.step-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 24px;
  height: 24px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-list code {
  background-color: var(--color-card-tint);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: "SF Mono", "Consolas", monospace;
  color: var(--color-accent-dark);
}

.step-text p a {
  font-weight: 600;
}

.step-media {
  overflow: hidden;
  min-height: 260px;
  height: 100%;
}

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

.step-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  text-align: center;
}

/* 注意事项 */
.guide-notes {
  background-color: var(--color-card-tint);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 48px;
}

.guide-notes h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.note-list {
  margin-bottom: 16px;
}

.note-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.note-list li::before {
  content: "!";
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 18px;
  height: 18px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-notes > p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-top: 12px;
}

.guide-notes a {
  font-weight: 600;
  margin-right: 16px;
}

/* --------------------------------------------------------------------------
   10. 问题反馈页（mysp/fankui.html）
   -------------------------------------------------------------------------- */

/* 反馈范围两栏 */
.feedback-scope {
  margin-bottom: 48px;
}

.feedback-scope > h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
}

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

.scope-col {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.scope-col h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.scope-accept h3 {
  color: var(--color-accent);
}

.scope-decline h3 {
  color: var(--color-text-secondary);
}

.scope-col ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
}

.scope-col ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.scope-accept ul li::before {
  background-color: var(--color-accent);
}

.scope-decline ul li::before {
  background-color: var(--color-text-secondary);
}

/* 反馈流程示意图 */
.feedback-visual {
  margin-bottom: 48px;
}

.feedback-visual > h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
}

.feedback-figure {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feedback-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.feedback-figure figcaption {
  padding: 14px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  background-color: var(--color-card-tint);
  text-align: center;
}

/* 反馈步骤时间线 */
.feedback-steps {
  margin-bottom: 48px;
}

.feedback-steps > h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}

.step-timeline {
  position: relative;
  padding-left: 40px;
}

.step-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
}

.step-number {
  position: absolute;
  left: -40px;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  z-index: 1;
  box-shadow: 0 0 0 4px var(--color-bg);
}

.step-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.step-content h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 反馈前建议 */
.feedback-tips {
  background-color: var(--color-card-tint);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 48px;
}

.feedback-tips > h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.tips-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.tips-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.tips-list a {
  font-weight: 600;
}

/* 相关页面入口 */
.related-links h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.related-links ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.related-links ul li a {
  display: block;
  padding: 12px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  transition: border-color var(--transition-base), color var(--transition-base);
}

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

/* --------------------------------------------------------------------------
   11. 404 页面
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 64px - 300px);
  padding: 60px 24px;
}

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

.error-content h1 {
  font-size: 72px;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 16px;
  line-height: 1;
}

.error-content p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  line-height: 1.8;
}

.error-home-link {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
  line-height: 1.4;
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.error-home-link:hover {
  background-color: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   12. Responsive —— 响应式断点
   -------------------------------------------------------------------------- */

/* 平板及以下 */
@media (max-width: 1024px) {
  .dir-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .channel-index-layout {
    grid-template-columns: 1fr;
  }

  .channel-tag-list {
    flex-direction: row;
    flex-wrap: wrap;
    position: static;
  }

  .channel-tag-list .channel-tag {
    width: auto;
  }

  .footer-inner {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .hero-brand-visual .hero-copy {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-figure img {
    height: 300px;
  }
}

/* 移动端断点 */
@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(62, 47, 34, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 0;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    padding: 14px 20px;
    border-radius: 0;
    font-size: 15px;
    border-bottom: 1px solid var(--color-border);
  }

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

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

  .site-main.inner-main {
    padding-top: 24px;
  }

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

  .page-description {
    font-size: 15px;
  }

  .breadcrumb {
    margin-bottom: 16px;
    padding-bottom: 12px;
    font-size: 13px;
  }

  /* 首页移动端 */
  .hero-brand-visual {
    padding: 40px 16px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-figure img {
    height: 220px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

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

  .core-directory {
    padding: 40px 16px 32px;
  }

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

  .dir-card {
    padding: 20px;
  }

  .channel-index {
    padding: 32px 16px;
  }

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

  .channel-card figure img {
    height: 160px;
  }

  .latest-content {
    padding: 40px 16px;
  }

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

  .latest-card figure img {
    height: 180px;
  }

  .featured-topics {
    padding: 40px 16px;
  }

  .topic-large-card {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .topic-large-card figure {
    min-height: 200px;
  }

  .topic-large-card figure img {
    height: 220px;
  }

  .topic-large-body {
    padding: 24px;
  }

  .ranking-summary {
    padding: 40px 16px;
  }

  .ranking-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px;
  }

  .rank-num {
    min-width: auto;
  }

  .rank-name {
    min-width: auto;
  }

  .guide-summary {
    padding: 40px 16px;
  }

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

  .feedback-entry {
    padding: 40px 16px;
  }

  /* 内页移动端 */
  .channel-filter {
    gap: 8px;
  }

  .channel-tag {
    padding: 8px 14px;
    font-size: 13px;
  }

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

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

  .channel-info {
    padding: 20px;
  }

  .choice-note {
    padding: 24px;
  }

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

  .topic-media {
    min-height: 200px;
  }

  .topic-media img {
    height: 220px;
  }

  .topic-body {
    padding: 24px;
  }

  .topic-usage-note {
    padding: 24px;
  }

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

  .explain-media {
    min-height: 200px;
  }

  .explain-media img {
    height: 220px;
  }

  .explain-text {
    padding: 24px;
  }

  .table-wrap {
    overflow-x: auto;
  }

  .ranking-table {
    min-width: 640px;
  }

  .ranking-table th,
  .ranking-table td {
    padding: 12px 14px;
  }

  .ranking-usage .usage-content {
    padding: 24px;
  }

  .guide-step-block {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .step-text {
    padding: 24px;
  }

  .step-media {
    min-height: 200px;
  }

  .step-media img {
    height: 220px;
  }

  /* 步骤块交替顺序：移动端统一文字在前 */
  .step-topic .step-media {
    order: 2;
  }

  .step-topic .step-text {
    order: 1;
  }

  .guide-notes {
    padding: 24px;
  }

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

  .scope-col {
    padding: 24px;
  }

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

  .step-timeline {
    padding-left: 32px;
  }

  .step-number {
    left: -32px;
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .step-timeline::before {
    left: 13px;
  }

  .step-content {
    padding: 16px 20px;
  }

  .feedback-tips {
    padding: 24px;
  }

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

  .page-pagination {
    flex-direction: column;
    gap: 12px;
  }

  .pagination-prev,
  .pagination-next {
    text-align: center;
  }

  .page-next-links,
  .page-nav-links {
    flex-direction: column;
  }

  .next-link,
  .page-nav-links a {
    text-align: center;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 0 16px;
  }

  .footer-bottom {
    padding: 16px 16px 0;
  }
}

/* 小屏手机 */
@media (max-width: 390px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .topic-large-card figure img,
  .topic-media img,
  .explain-media img,
  .step-media img {
    height: 180px;
  }

  .step-list li {
    font-size: 14px;
    padding-left: 28px;
  }

  .step-list li::before {
    width: 22px;
    height: 22px;
    font-size: 12px;
  }

  .error-content h1 {
    font-size: 56px;
  }
}