/* ============================================================
   菠萝短剧 · 全站样式表
   配色体系：浅灰绿底 / 深翠主色 / 琥珀索引 / 状态绿 / 暖橘点缀
   ============================================================ */

/* ============================================================
   1. Base —— 重置 / 变量 / 全局字体与颜色
   ============================================================ */

:root {
  --bg-page: #f5f7f6;
  --bg-card: #ffffff;
  --bg-deep: #0d332d;
  --bg-soft-green: #e8f0ec;
  --accent-amber: #e6b450;
  --accent-green: #4c8e79;
  --accent-orange: #f0c9a0;
  --text-main: #222c26;
  --text-secondary: #5a6a62;
  --text-light: #8a9a92;
  --border-soft: #dfe7e2;
  --border-medium: #cbd8d1;
  --white: #ffffff;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 3px rgba(13, 51, 45, 0.06), 0 4px 12px rgba(13, 51, 45, 0.05);
  --shadow-hover: 0 4px 8px rgba(13, 51, 45, 0.08), 0 8px 24px rgba(13, 51, 45, 0.08);
  --container-width: 1280px;
  --content-max: 760px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

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

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--bg-deep);
}

ul,
ol {
  list-style-position: inside;
}

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  color: var(--bg-deep);
  font-weight: 700;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

h4 {
  font-size: 1rem;
}

p {
  margin-bottom: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

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

/* 屏幕阅读器专用隐藏类 */
.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;
}

/* ============================================================
   2. Layout —— 页头 / 页脚 / 主容器 / 面包屑 / 页面标题区
   ============================================================ */

.site-header {
  background-color: var(--bg-deep);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

.header-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  flex-shrink: 0;
}

.brand a {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-size: 1.25rem;
  font-weight: 700;
}

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

.brand-name {
  letter-spacing: 0.02em;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-list a:hover {
  color: var(--white);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-list a.is-current {
  color: var(--white);
  background-color: rgba(230, 180, 80, 0.2);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: transparent;
  align-items: center;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--white);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-main {
  min-height: 60vh;
}

/* 首页主容器 */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 内页主容器 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

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

.breadcrumb a:hover {
  color: var(--bg-deep);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--text-light);
  user-select: none;
}

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

/* 内页标题区 */
.page-header {
  padding: 12px 0 32px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 36px;
}

.page-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: var(--bg-deep);
  line-height: 1.25;
  margin-bottom: 12px;
}

.page-description {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: var(--content-max);
}

/* 页脚 */
.site-footer {
  background-color: var(--bg-deep);
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-col h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h2::after {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  background-color: var(--accent-amber);
  position: absolute;
  bottom: 0;
  left: 0;
}

.footer-brand {
  font-size: 1.35rem;
  color: var(--white);
  margin-bottom: 12px;
}

.footer-col p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  display: inline-block;
  margin-bottom: 8px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* ============================================================
   3. Components —— 通用组件
   ============================================================ */

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

.section-heading h2,
.section-title {
  font-size: clamp(1.4rem, 2.4vw, 1.8rem);
  font-weight: 800;
  color: var(--bg-deep);
  margin-bottom: 10px;
}

.section-description,
.section-intro,
.section-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: var(--content-max);
}

/* 主按钮 */
.btn-primary {
  display: inline-block;
  background-color: var(--bg-deep);
  color: var(--white);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 2px 6px rgba(13, 51, 45, 0.15);
}

.btn-primary:hover {
  background-color: #164a40;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(13, 51, 45, 0.2);
}

/* 次按钮 */
.btn-secondary {
  display: inline-block;
  background-color: transparent;
  color: var(--bg-deep);
  border: 1.5px solid var(--bg-deep);
  padding: 11px 26px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

/* 文字链接 */
.text-link {
  color: var(--accent-green);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.text-link:hover {
  color: var(--bg-deep);
  border-bottom-color: var(--bg-deep);
}

/* ============================================================
   4. Pages —— 首页模块
   ============================================================ */

/* ========== 4.1 首屏焦点区 ========== */
.hero-focus {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 64px;
}

.hero-copy {
  padding: 8px 0;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: var(--bg-deep);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-copy h1 span {
  color: var(--accent-green);
}

.hero-lead {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.quick-links-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
}

.quick-links a {
  font-size: 0.9rem;
  color: var(--accent-green);
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.quick-links a:hover {
  color: var(--bg-deep);
  border-bottom-color: var(--bg-deep);
}

.hero-visual {
  margin: 0;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background-color: var(--bg-card);
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-visual figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  line-height: 1.6;
  border-top: 1px solid var(--border-soft);
}

/* ========== 4.2 频道分类导视带 ========== */
.channel-overview-band {
  padding: 48px 0;
}

.channel-band-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.channel-band-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border-soft);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.channel-band-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--accent-green);
}

.channel-band-item:nth-child(2)::before {
  background-color: var(--accent-amber);
}

.channel-band-item:nth-child(3)::before {
  background-color: var(--accent-orange);
}

.channel-band-item:nth-child(4)::before {
  background-color: #7ba3c9;
}

.channel-band-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-medium);
}

.channel-band-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bg-deep);
  margin-bottom: 10px;
}

.channel-band-item p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.channel-band-item a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.channel-band-item a::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.channel-band-item a:hover::after {
  transform: translateX(4px);
}

/* ========== 4.3 时间线窄带 ========== */
.timeline-strip {
  padding: 48px 0;
  background-color: var(--bg-soft-green);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.timeline-horizontal {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.timeline-node {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-soft);
  position: relative;
}

.timeline-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--accent-green);
  transform: translateY(-50%);
}

.timeline-node time {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-amber);
  background-color: rgba(230, 180, 80, 0.12);
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 10px;
}

.timeline-node p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.timeline-node a {
  font-size: 0.85rem;
  font-weight: 600;
}

/* ========== 4.4 题材图鉴与频道速查 ========== */
.genre-showcase {
  padding: 56px 0 48px;
}

.genre-dual-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

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

.genre-visual-card {
  margin: 0;
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

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

.genre-visual-card figcaption {
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.genre-index-list {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 24px;
}

.genre-index-list ul {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
}

.genre-index-list li {
  border-bottom: 1px dashed var(--border-soft);
}

.genre-index-list li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 4px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.genre-index-list li a:hover {
  color: var(--accent-green);
  background-color: rgba(76, 142, 121, 0.05);
}

.genre-index-list li a::after {
  content: attr(data-count);
  font-size: 0.8rem;
  color: var(--text-light);
  background-color: var(--bg-soft-green);
  padding: 2px 8px;
  border-radius: 10px;
  flex-shrink: 0;
}

.genre-more-link {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}

/* ========== 4.5 专题片单结构区 ========== */
.playlist-structure {
  padding: 48px 0;
}

.playlist-duo-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: start;
}

.curation-method {
  background-color: var(--bg-deep);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.curation-method h3 {
  color: var(--accent-amber);
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.curation-method ol {
  list-style: none;
  counter-reset: method-counter;
  margin-bottom: 24px;
}

.curation-method ol li {
  counter-increment: method-counter;
  padding: 12px 0 12px 44px;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
}

.curation-method ol li:last-child {
  border-bottom: none;
}

.curation-method ol li::before {
  content: counter(method-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-amber);
}

.curation-method ol li strong {
  display: block;
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.curation-method > a {
  color: var(--accent-amber);
  font-weight: 600;
  font-size: 0.9rem;
}

.curation-method > a:hover {
  color: var(--white);
}

.current-playlist-list {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
}

.current-playlist-list h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--bg-deep);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-soft-green);
}

.current-playlist-list ul {
  list-style: none;
}

.current-playlist-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-soft);
  transition: padding-left var(--transition-fast);
}

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

.current-playlist-list li:hover {
  padding-left: 8px;
}

.current-playlist-list li a {
  display: block;
  font-weight: 600;
  font-size: 1rem;
  color: var(--bg-deep);
  margin-bottom: 4px;
}

.current-playlist-list li a:hover {
  color: var(--accent-green);
}

.current-playlist-list li p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== 4.6 播放指引与FAQ预览 ========== */
.guide-faq-preview {
  padding: 48px 0;
}

.preview-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.guide-step-preview,
.faq-preview {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
}

.guide-step-preview h3,
.faq-preview h3 {
  font-size: 1.2rem;
  color: var(--bg-deep);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-soft-green);
}

.guide-mini-steps {
  list-style: none;
  margin-bottom: 20px;
}

.guide-mini-steps li {
  padding: 10px 0 10px 36px;
  position: relative;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border-soft);
}

.guide-mini-steps li:last-child {
  border-bottom: none;
}

.guide-mini-steps li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
}

.guide-mini-steps li strong {
  color: var(--text-main);
  font-weight: 600;
}

.guide-step-preview > a {
  font-weight: 600;
  font-size: 0.9rem;
}

.faq-preview details {
  border-bottom: 1px solid var(--border-soft);
}

.faq-preview details:last-child {
  border-bottom: none;
}

.faq-preview summary {
  padding: 14px 0;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 28px;
  transition: color var(--transition-fast);
}

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

.faq-preview summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--accent-green);
  font-weight: 400;
  transition: transform var(--transition-fast);
}

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

.faq-preview summary:hover {
  color: var(--accent-green);
}

.faq-preview details p {
  padding: 0 0 14px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.faq-preview > a {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ============================================================
   5. Pages —— 内页通用组件
   ============================================================ */

/* 通用内页链接色 */
.inner-main a {
  color: var(--accent-green);
  font-weight: 500;
}

.inner-main a:hover {
  color: var(--bg-deep);
  text-decoration: underline;
}

/* ============================================================
   6. Pages —— 频道全览 channel-map
   ============================================================ */

/* 频道总览引导卡 */
.channel-overview-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 32px;
  margin-bottom: 48px;
}

.channel-overview-card .section-title {
  margin-bottom: 24px;
}

.overview-intro {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.overview-copy p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.overview-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.overview-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.overview-figure figcaption {
  padding: 10px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-soft-green);
}

/* 题材频道组 */
.genre-index {
  margin-bottom: 48px;
}

.genre-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.genre-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 20px;
  transition: box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.genre-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-medium);
}

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

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

.genre-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.genre-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.genre-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.genre-tags span {
  display: inline-block;
  font-size: 0.8rem;
  background-color: var(--bg-soft-green);
  color: var(--accent-green);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 500;
}

.genre-content > p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 频道与入口关系表 */
.channel-entry-table {
  margin-bottom: 48px;
}

.table-scroll {
  overflow-x: auto;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
}

.channel-entry-table table {
  min-width: 720px;
}

.channel-entry-table th {
  background-color: var(--bg-deep);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
  white-space: nowrap;
}

.channel-entry-table td {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
  line-height: 1.7;
}

.channel-entry-table tr:last-child td {
  border-bottom: none;
}

.channel-entry-table tbody tr:nth-child(even) {
  background-color: #fafcfb;
}

.channel-entry-table tbody tr:hover {
  background-color: var(--bg-soft-green);
}

/* 频道选择建议 */
.channel-suggestions {
  margin-bottom: 48px;
}

.suggestion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.suggestion-card h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg-soft-green);
}

.suggestion-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.suggestion-card a {
  font-weight: 600;
  font-size: 0.9rem;
}

/* 内容边界提示 */
.content-boundary-note {
  background-color: var(--bg-soft-green);
  border-left: 4px solid var(--accent-green);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 0;
}

.content-boundary-note p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.content-boundary-note strong {
  color: var(--bg-deep);
  font-weight: 700;
}

/* ============================================================
   7. Pages —— 专题片单 playlist
   ============================================================ */

.playlist-intro {
  margin-bottom: 48px;
}

.intro-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px 32px;
}

.intro-content p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.intro-content p:last-child {
  margin-bottom: 0;
}

/* 片单大卡 */
.playlist-cards {
  margin-bottom: 48px;
}

.playlist-cards > .section-title {
  margin-bottom: 28px;
}

.playlist-topic-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  overflow: hidden;
  margin-bottom: 28px;
  transition: box-shadow var(--transition-normal);
}

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

.topic-media figure {
  margin: 0;
  position: relative;
}

.topic-media img {
  width: 100%;
  aspect-ratio: 21 / 8;
  object-fit: cover;
}

.topic-media figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(13, 51, 45, 0.75);
  color: var(--white);
  font-size: 0.82rem;
  padding: 8px 20px;
  backdrop-filter: blur(4px);
}

.topic-body {
  padding: 28px 32px 32px;
}

.topic-body > h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.topic-guide {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.topic-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 20px 24px;
  background-color: var(--bg-soft-green);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.topic-details h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--bg-deep);
  margin-bottom: 10px;
}

.topic-details ul {
  list-style: none;
}

.topic-details ul li {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-secondary);
  padding: 4px 0;
  position: relative;
  padding-left: 16px;
}

.topic-details ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-green);
}

.topic-note {
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: normal;
  background-color: rgba(230, 180, 80, 0.08);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-amber);
}

/* 编选方法 */
.method-section {
  margin-bottom: 48px;
}

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

.method-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 24px;
  position: relative;
  counter-increment: method-item;
}

.method-item h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.method-item h3::before {
  content: "0" counter(method-item);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-amber);
  background-color: rgba(230, 180, 80, 0.15);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.method-item p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 延伸阅读 */
.related-links {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
  margin-top: 16px;
}

.related-links h2 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.related-links > p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.related-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.related-list li a {
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.related-list li a:hover {
  border-bottom-color: var(--accent-green);
}

/* ============================================================
   8. Pages —— 观看指南 guide
   ============================================================ */

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

.guide-intro {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
  margin-bottom: 48px;
}

.guide-concept-text p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.guide-concept-text p:last-child {
  margin-bottom: 0;
}

.guide-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.guide-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 10px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-soft-green);
}

/* 六步操作 */
.guide-steps-section {
  margin-bottom: 48px;
}

.guide-steps-list {
  list-style: none;
  counter-reset: guide-step;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-step-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 20px 24px;
  transition: box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.guide-step-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-medium);
}

.step-number {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.step-number::before {
  content: counter(guide-step);
  counter-increment: guide-step;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--bg-deep);
  color: var(--accent-amber);
  font-size: 1.2rem;
  font-weight: 800;
}

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

.step-content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.step-output {
  display: inline-block;
  background-color: var(--bg-soft-green);
  border-left: 3px solid var(--accent-green);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem !important;
  color: var(--text-main) !important;
  font-weight: 500;
  margin-bottom: 0 !important;
}

/* 入口核验表 */
.verify-section {
  margin-bottom: 48px;
}

.verify-table-wrap {
  overflow-x: auto;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
}

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

.verify-table th {
  background-color: var(--bg-deep);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
}

.verify-table td {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-soft);
  line-height: 1.7;
  vertical-align: top;
}

.verify-table tr:last-child td {
  border-bottom: none;
}

.verify-table tbody tr:nth-child(even) {
  background-color: #fafcfb;
}

/* 异常处理 */
.trouble-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.trouble-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 24px;
}

.trouble-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}

.trouble-card h3::before {
  content: "!";
  position: absolute;
  left: 0;
  top: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--accent-orange);
  color: var(--bg-deep);
  font-size: 0.75rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.trouble-card p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 反馈引导 */
.guide-feedback-section {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
}

.guide-feedback-section > p:last-child {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* ============================================================
   9. Pages —— 内容时间线 topic-updates
   ============================================================ */

.timeline-index {
  margin-bottom: 40px;
}

.content-media-inline {
  margin: 0 0 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.content-media-inline img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.content-media-inline figcaption {
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
}

.index-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 24px;
}

.index-current-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.index-current-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--bg-deep);
  margin-bottom: 8px;
}

.index-current-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.index-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.index-list a {
  font-size: 0.88rem;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

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

/* 当前版本 */
.current-version {
  margin-bottom: 40px;
}

.version-highlight {
  background-color: var(--bg-deep);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.version-highlight::before {
  content: "当前";
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--accent-amber);
  color: var(--bg-deep);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 18px;
  border-bottom-left-radius: var(--radius-md);
}

.version-highlight h2 {
  color: var(--accent-amber);
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.version-date {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}

.version-body p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 12px;
}

.version-body p:last-child {
  margin-bottom: 0;
}

/* 历史版本 */
.history-versions {
  margin-bottom: 40px;
}

.history-versions > h2 {
  margin-bottom: 20px;
}

.version-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  margin-bottom: 12px;
  overflow: hidden;
}

.version-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  transition: background-color var(--transition-fast);
  position: relative;
  padding-right: 44px;
}

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

.version-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: var(--accent-green);
  font-weight: 400;
}

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

.version-item summary:hover {
  background-color: var(--bg-soft-green);
}

.version-label {
  font-weight: 600;
}

.version-tag {
  font-size: 0.75rem;
  background-color: var(--bg-soft-green);
  color: var(--accent-green);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.version-content {
  padding: 0 20px 20px;
  border-top: 1px solid var(--border-soft);
  padding-top: 16px;
}

.version-content p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.version-content p:last-child {
  margin-bottom: 0;
}

/* 范围说明 */
.scope-note {
  background-color: var(--bg-soft-green);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.scope-note p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 延伸阅读（时间线页特殊形态） */
.topic-updates .related-links {
  margin-top: 0;
}

.topic-updates .related-links p {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin: 0;
}

/* ============================================================
   10. Pages —— 常见问题 faq
   ============================================================ */

.faq-guide-section {
  margin-bottom: 48px;
}

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

.faq-guide-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 24px;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.faq-guide-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--bg-deep);
}

.faq-guide-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.faq-guide-card a {
  font-size: 0.85rem;
  font-weight: 600;
}

/* FAQ 分组 */
.faq-group {
  margin-bottom: 48px;
  scroll-margin-top: 80px;
}

.faq-group > .section-title {
  margin-bottom: 8px;
}

.group-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.faq-image-block {
  margin-bottom: 16px;
}

.faq-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.faq-figure img {
  width: 100%;
  aspect-ratio: 21 / 7;
  object-fit: cover;
}

.faq-figure figcaption {
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
}

/* FAQ 折叠项 */
.faq-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 24px;
  padding-right: 48px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  position: relative;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--accent-green);
  font-weight: 400;
  transition: transform var(--transition-fast);
}

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

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

.faq-item summary:hover {
  background-color: var(--bg-soft-green);
}

.faq-answer {
  padding: 4px 24px 20px;
  border-top: 1px solid var(--border-soft);
  padding-top: 16px;
}

.faq-answer p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* 未解决问题提示 */
.faq-more-block {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
  text-align: center;
}

.faq-more-block h2 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.faq-more-block p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ============================================================
   11. Pages —— 缺失反馈 feedback
   ============================================================ */

.feedback-scope {
  margin-bottom: 48px;
}

.scope-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
}

.scope-copy {
  padding: 32px;
}

.scope-copy p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.scope-copy p:last-child {
  margin-bottom: 0;
}

.scope-media {
  margin: 0;
}

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

.scope-media figcaption {
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-soft);
}

/* 反馈类型 */
.feedback-types {
  margin-bottom: 48px;
}

.types-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.type-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  padding: 24px;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.type-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.type-card h3::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background-color: var(--accent-green);
  flex-shrink: 0;
}

.type-card:nth-child(2) h3::before {
  background-color: var(--accent-amber);
}

.type-card:nth-child(3) h3::before {
  background-color: var(--accent-orange);
}

.type-card:nth-child(4) h3::before {
  background-color: #7ba3c9;
}

.type-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

.steps-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  counter-reset: feedback-step;
}

.step-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  padding: 24px;
  position: relative;
}

.step-num {
  display: block;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-amber);
  background-color: rgba(230, 180, 80, 0.15);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.step-body h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.step-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 处理流程 */
.process-note {
  margin-bottom: 48px;
}

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

.process-card {
  background-color: var(--bg-soft-green);
  border-radius: var(--radius-md);
  padding: 24px;
  border-left: 4px solid var(--accent-green);
}

.process-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--bg-deep);
}

.process-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 站内入口 */
.links-band {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 28px;
}

.links-band p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.links-band ul {
  list-style: none;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.links-band li a {
  font-weight: 600;
  font-size: 0.9rem;
}

/* ============================================================
   12. Pages —— 关于与边界 boundary
   ============================================================ */

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

.editorial-block h2 {
  margin-bottom: 16px;
}

.editorial-block > p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 14px;
  max-width: var(--content-max);
}

.figure-block {
  margin: 20px 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.figure-block img {
  width: 100%;
  aspect-ratio: 21 / 8;
  object-fit: cover;
}

.figure-block figcaption {
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
}

/* 收录范围对照 */
.scope-section {
  margin-bottom: 48px;
}

.scope-section > h2 {
  margin-bottom: 20px;
}

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.scope-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg-soft-green);
}

.scope-include h3::before {
  content: "收录";
  font-size: 0.75rem;
  background-color: var(--accent-green);
  color: var(--white);
  padding: 2px 10px;
  border-radius: 12px;
  margin-right: 10px;
  vertical-align: middle;
}

.scope-exclude h3::before {
  content: "不收";
  font-size: 0.75rem;
  background-color: var(--text-light);
  color: var(--white);
  padding: 2px 10px;
  border-radius: 12px;
  margin-right: 10px;
  vertical-align: middle;
}

.scope-card ul {
  list-style: none;
}

.scope-card ul li {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  padding: 8px 0 8px 24px;
  position: relative;
  border-bottom: 1px dashed var(--border-soft);
}

.scope-card ul li:last-child {
  border-bottom: none;
}

.scope-include ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--accent-green);
  font-weight: 700;
}

.scope-exclude ul li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--text-light);
  font-weight: 700;
}

/* 频道边界说明 */
.channel-boundary {
  margin-bottom: 48px;
}

.channel-boundary > h2 {
  margin-bottom: 8px;
}

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

.boundary-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  padding: 24px;
  border-top: 3px solid var(--accent-green);
}

.boundary-item:nth-child(2) {
  border-top-color: var(--accent-amber);
}

.boundary-item:nth-child(3) {
  border-top-color: var(--accent-orange);
}

.boundary-item h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.boundary-item p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 来源说明表 */
.source-section {
  margin-bottom: 48px;
}

.source-section > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.source-table-wrap {
  overflow-x: auto;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
}

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

.source-table th {
  background-color: var(--bg-deep);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
}

.source-table td {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-soft);
  line-height: 1.7;
  vertical-align: top;
}

.source-table tr:last-child td {
  border-bottom: none;
}

.source-table tbody tr:nth-child(even) {
  background-color: #fafcfb;
}

/* 更新说明 */
.update-note {
  background-color: var(--bg-soft-green);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
}

.update-note h2 {
  font-size: 1.2rem;
  margin-bottom: 14px;
}

.update-note p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

.update-note p:last-child {
  margin-bottom: 0;
}

/* 边界页延伸阅读 */
.boundary .related-links {
  margin-top: 0;
}

.boundary .related-links ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}

.boundary .related-links li a {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

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

/* ============================================================
   13. Pages —— 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 48px 24px;
}

.error-section {
  max-width: 640px;
  text-align: center;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 48px 40px;
  box-shadow: var(--shadow-card);
}

.error-code {
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent-amber);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.btn-home {
  display: inline-block;
  background-color: var(--bg-deep);
  color: var(--white);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: background-color var(--transition-fast);
}

.btn-home:hover {
  background-color: #164a40;
  color: var(--white);
}

.btn-guide {
  display: inline-block;
  border: 1.5px solid var(--bg-deep);
  color: var(--bg-deep);
  padding: 9px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn-guide:hover {
  background-color: var(--bg-deep);
  color: var(--white);
}

.error-tip {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.error-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.error-links a {
  font-size: 0.88rem;
  font-weight: 600;
}

/* ============================================================
   14. Responsive —— 响应式断点
   ============================================================ */

/* 大屏：1280px 以下 */
@media (max-width: 1200px) {
  .channel-band-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .genre-item {
    grid-template-columns: 220px 1fr;
  }

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

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

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

  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* 中屏：992px 以下 */
@media (max-width: 992px) {
  .hero-focus {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 0 48px;
  }

  .hero-copy h1 {
    font-size: clamp(2rem, 5vw, 2.8rem);
  }

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

  .genre-dual-panel {
    grid-template-columns: 1fr;
  }

  .playlist-duo-layout {
    grid-template-columns: 1fr;
  }

  .preview-duo {
    grid-template-columns: 1fr;
  }

  .overview-intro {
    grid-template-columns: 1fr;
  }

  .genre-item {
    grid-template-columns: 180px 1fr;
  }

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

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

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

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

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

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

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

  .boundary-group {
    grid-template-columns: 1fr;
  }

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

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

  .timeline-horizontal {
    grid-template-columns: 1fr;
  }

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

/* 平板：768px 以下 */
@media (max-width: 768px) {
  .header-shell {
    flex-wrap: wrap;
    padding: 0 16px;
    min-height: 60px;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    order: 4;
    flex-basis: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 0 16px;
    gap: 0;
  }

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

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

  .nav-list a {
    padding: 14px 8px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

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

  .breadcrumb {
    padding: 16px 0 8px;
  }

  .page-header {
    padding: 8px 0 24px;
    margin-bottom: 28px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 24px;
  }

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

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

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

  .genre-index-list ul {
    grid-template-columns: 1fr;
  }

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

  .genre-media img {
    aspect-ratio: 16 / 9;
  }

  .topic-media img {
    aspect-ratio: 16 / 9;
  }

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

  .steps-track {
    grid-template-columns: 1fr;
  }

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

  .timeline-strip {
    margin: 0 -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .topic-body {
    padding: 20px;
  }

  .topic-details {
    padding: 16px;
  }

  .intro-content {
    padding: 20px;
  }

  .scope-copy {
    padding: 20px;
  }

  .scope-card {
    padding: 20px;
  }

  .version-highlight {
    padding: 24px;
  }

  .faq-item summary {
    padding: 14px 40px 14px 16px;
    font-size: 0.92rem;
  }

  .faq-answer {
    padding: 4px 16px 16px;
  }

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

  .error-code {
    font-size: 3rem;
  }
}

/* 小屏：480px 以下 */
@media (max-width: 480px) {
  .hero-focus {
    padding: 32px 0 40px;
  }

  .hero-copy h1 {
    font-size: 1.9rem;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

  .quick-links {
    gap: 6px 12px;
  }

  .channel-band-item {
    padding: 20px;
  }

  .genre-index-list {
    padding: 16px;
  }

  .guide-step-item {
    grid-template-columns: 48px 1fr;
    gap: 12px;
    padding: 16px;
  }

  .step-number::before {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

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

  .btn-home,
  .btn-guide {
    text-align: center;
  }

  .error-links {
    flex-direction: column;
    gap: 8px;
  }

  .related-list {
    flex-direction: column;
    gap: 8px;
  }

  .links-band ul {
    flex-direction: column;
    gap: 8px;
  }

  .guide-feedback-section > p:last-child {
    flex-direction: column;
    gap: 8px;
  }

  .topic-updates .related-links p {
    flex-direction: column;
    gap: 8px;
  }
}

/* 打印样式 */
@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .breadcrumb,
  .related-links {
    display: none;
  }

  body {
    background-color: var(--white);
  }

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

  .site-main {
    min-height: auto;
  }
}