/* ============================================================
   星空传媒 · 全站样式表
   视觉方向：清晰编辑风 / 白底 / 琥珀强调
   说明：本文件为整站唯一 CSS，覆盖全部页面与组件
   ============================================================ */

/* ============================================================
   Base —— 基础变量、重置、字体、通用元素
   ============================================================ */
:root {
  --color-bg: #ffffff;
  --color-text: #111827;
  --color-text-secondary: #374151;
  --color-accent: #D97706;
  --color-accent-light: #FEF3C7;
  --color-gray-bg: #F3F4F6;
  --color-footer-bg: #1E3A5F;
  --color-border: #E5E7EB;
  --color-white: #ffffff;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-width: 1200px;
  --content-padding: 20px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --gap-section: 48px;
  --gap-paragraph: 16px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: #B45309;
}

ul, ol {
  list-style: none;
}

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

h1 { font-size: 32px; }
h2 { font-size: 22px; }
h3 { font-size: 18px; }

p { margin-bottom: var(--gap-paragraph); }

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-top: 8px;
}

details summary {
  cursor: pointer;
  list-style: none;
  position: relative;
}

details summary::-webkit-details-marker {
  display: none;
}

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

/* 通用区块标题 */
.section-title {
  font-size: 22px;
  margin-bottom: 16px;
  position: relative;
}

.section-desc {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  max-width: 720px;
}

/* 通用文字链接 */
.text-link {
  display: inline-block;
  font-weight: 600;
  font-size: 15px;
  margin-top: 8px;
}

.text-link::after {
  content: ' →';
  transition: margin-left 0.2s ease;
}

.text-link:hover::after {
  margin-left: 4px;
}

/* ============================================================
   Layout —— 全站骨架：页头、导航、页脚、内页布局
   ============================================================ */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

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

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

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
  font-size: 15px;
}

.nav-toggle-icon {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  position: relative;
  transition: background-color 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.2s ease;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle-text {
  font-size: 14px;
  font-weight: 500;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-footer-bg);
  color: #D1D5DB;
  margin-top: 64px;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--content-padding) 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-col p {
  margin-bottom: 8px;
}

.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #9CA3AF;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #9CA3AF;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px var(--content-padding);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #9CA3AF;
  margin: 0;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* 内页通用骨架 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

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

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

.breadcrumb-sep {
  color: #9CA3AF;
}

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

/* 页面标题区 */
.page-header {
  padding: 28px 0 36px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 760px;
  margin-bottom: 0;
}

/* 双栏布局：侧栏在左 */
.layout-shell.sidebar-left,
.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}

/* 双栏布局：侧栏在右 */
.layout-shell.sidebar-right {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

/* 侧栏通用 */
.aside-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* ============================================================
   Components —— 通用组件：卡片、步骤、折叠、按钮等
   ============================================================ */

/* 步骤链接（首页 hero 与内页步骤） */
.hero-steps .step-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  color: var(--color-text);
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.hero-steps .step-link:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.hero-steps .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.hero-steps .step-text {
  font-size: 15px;
}

/* 折叠项 */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  background-color: var(--color-white);
  transition: box-shadow 0.2s ease;
}

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

.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
  padding-right: 44px;
}

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
  transition: transform 0.2s ease;
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: var(--color-text-secondary);
  margin: 0;
}

.faq-item p a {
  font-weight: 500;
}

/* 图片容器与正文内嵌图 */
.content-media {
  margin: 24px 0;
}

.content-media-inline {
  max-width: 100%;
}

.content-media img,
.content-media-inline img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.content-media figcaption,
.content-media-inline figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

/* 通用卡片媒体 */
.card-media,
.featured-media {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.card-media img,
.featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

/* 通用按钮 */
.button-link {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.button-link:hover {
  background-color: #B45309;
  color: var(--color-white);
  transform: translateY(-2px);
}

/* 区块头部 */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.section-header h2 {
  margin-bottom: 4px;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0;
}

/* 区块底部更多链接 */
.section-link {
  display: inline-block;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-accent);
  padding: 8px 0;
}

.section-link::after {
  content: ' →';
}

/* 时间线列表（首页与动态页共用基础） */
.timeline-list {
  position: relative;
}

.timeline-item {
  position: relative;
  padding: 0 0 24px 28px;
  border-left: 2px solid var(--color-border);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item time {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.timeline-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.timeline-item h3 a {
  color: var(--color-text);
}

.timeline-item h3 a:hover {
  color: var(--color-accent);
}

.timeline-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 相关链接侧栏 */
.related-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.related-link {
  display: block;
}

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

.related-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  transition: color 0.2s ease;
}

.related-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* 锚点目录（频道、趋势、指南共用） */
.anchor-list li,
.guide-index ul li,
.trend-index ul li {
  margin-bottom: 4px;
}

.anchor-list li a,
.guide-index ul li a,
.trend-index ul li a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.anchor-list li a:hover,
.guide-index ul li a:hover,
.trend-index ul li a:hover {
  background-color: var(--color-gray-bg);
  color: var(--color-text);
}

/* 步骤编号（指南页与反馈流程） */
.guide-steps .step-number,
.process-step .step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  flex-shrink: 0;
}

/* 通用卡片 hover */
.channel-card,
.topic-card,
.interview-card,
.featured-card,
.help-link-card {
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.channel-card:hover,
.topic-card:hover,
.interview-card:hover,
.featured-card:hover,
.help-link-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* ============================================================
   Pages —— 首页各模块
   ============================================================ */

/* ---------- 首页：步骤导向首屏 ---------- */
.hero {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px var(--content-padding) 48px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-steps {
  display: flex;
  flex-direction: column;
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

/* ---------- 首页：频道区域索引 ---------- */
.channels-index {
  background-color: var(--color-gray-bg);
  padding: 48px 0;
}

.channels-index .section-header {
  max-width: var(--container-width);
  margin: 0 auto 28px;
  padding: 0 var(--content-padding);
}

.channel-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.channel-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding-bottom: 20px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.channel-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  margin-bottom: 16px;
}

.channel-card h3 {
  font-size: 17px;
  padding: 0 20px;
  margin-bottom: 8px;
}

.channel-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 0 20px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.card-link {
  display: inline-block;
  margin: 0 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.card-link::after {
  content: ' →';
}

/* ---------- 首页：专题片单预览 ---------- */
.topics-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--content-padding);
}

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

.topic-item {
  display: flex;
  gap: 20px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow 0.2s ease;
}

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

.topic-item img {
  width: 140px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.topic-info h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.topic-info p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.topic-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.topic-more {
  margin-top: 24px;
  text-align: right;
}

/* ---------- 首页：观看说明带 ---------- */
.guide-band {
  background-color: var(--color-accent);
  padding: 40px 0;
}

.guide-band-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.guide-band-inner h2 {
  color: var(--color-white);
  font-size: 20px;
  margin-bottom: 4px;
}

.guide-band-inner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  margin: 0;
}

.guide-band-inner .button-link {
  background-color: var(--color-white);
  color: var(--color-accent);
  flex-shrink: 0;
}

.guide-band-inner .button-link:hover {
  background-color: var(--color-accent-light);
}

/* ---------- 首页：行业动态摘要 ---------- */
.news-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--content-padding);
}

.news-more {
  margin-top: 20px;
}

/* ---------- 首页：问题反馈入口 ---------- */
.feedback-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--content-padding) 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.feedback-left h2,
.feedback-right h3 {
  margin-bottom: 16px;
}

.feedback-right {
  background-color: var(--color-gray-bg);
  padding: 28px;
  border-radius: var(--radius-md);
}

.feedback-right p {
  font-size: 15px;
  color: var(--color-text-secondary);
}

/* ============================================================
   Pages —— 频道索引页
   ============================================================ */
.page-channels .channel-index {
  position: sticky;
  top: 88px;
}

.channel-block {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}

.channel-block:last-child {
  border-bottom: none;
}

.channel-text h2 {
  font-size: 20px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.channel-text p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.channel-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.channel-figure figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* 相关专题入口 */
.related-topics {
  margin-top: 48px;
  padding: 32px;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
}

.related-topics h2 {
  margin-bottom: 8px;
}

.related-topics > p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.topic-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 20px 0 16px;
}

.topic-links a {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.topic-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.more-tip {
  margin: 0;
  font-size: 14px;
}

.more-tip a {
  font-weight: 600;
}

/* ============================================================
   Pages —— 专题片单页
   ============================================================ */
.page-topics .featured-topic {
  margin-bottom: 48px;
}

.featured-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.featured-media {
  min-height: 300px;
}

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

.featured-content {
  padding: 32px 32px 32px 0;
}

.featured-content h3 {
  font-size: 22px;
  margin-bottom: 16px;
}

.featured-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.featured-content p strong {
  color: var(--color-text);
  font-weight: 600;
  margin-right: 8px;
}

/* 片单网格 */
.grid-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.topic-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-white);
}

.card-media {
  height: 180px;
}

.card-body {
  padding: 20px;
}

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

.card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 10px;
}

.card-meta {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 8px;
}

/* 关联频道 */
.related-channels {
  margin-top: 48px;
  padding: 32px;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
}

.channel-link-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.channel-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ============================================================
   Pages —— 行业动态页
   ============================================================ */
.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.news-tag {
  display: inline-block;
  padding: 6px 16px;
  background-color: var(--color-gray-bg);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.news-tag:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.news-timeline {
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-timeline:last-child {
  border-bottom: none;
}

.news-timeline .section-title {
  font-size: 20px;
}

.news-item {
  padding: 20px 0 20px 24px;
  border-left: 2px solid var(--color-border);
  margin-left: 8px;
  position: relative;
}

.news-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.news-date {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.news-tag-label {
  font-size: 12px;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.news-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.news-title a {
  color: var(--color-text);
}

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

.news-summary {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  line-height: 1.6;
}

.news-link {
  font-size: 14px;
  font-weight: 600;
}

.news-link::after {
  content: ' →';
}

.related-reads {
  position: sticky;
  top: 88px;
}

/* ============================================================
   Pages —— 趋势观察页
   ============================================================ */
.page-trend .trend-index {
  position: sticky;
  top: 88px;
}

.trend-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.trend-item h2 {
  font-size: 21px;
  margin-bottom: 8px;
}

.trend-meta {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.trend-figure {
  margin: 16px 0 24px;
}

.trend-figure img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.trend-figure figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.trend-body h3 {
  font-size: 16px;
  margin: 16px 0 8px;
  color: var(--color-accent);
}

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

/* 相关阅读 */
.trend-related {
  margin-top: 40px;
  padding: 28px;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-md);
}

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

.related-card {
  background-color: var(--color-white);
  padding: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.related-card h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

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

/* 本期观察要点 */
.trend-points {
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: 88px;
}

.trend-points h2 {
  font-size: 17px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.trend-points ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.trend-points ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

/* ============================================================
   Pages —— 人物访谈页
   ============================================================ */
.grid-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.interview-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-white);
}

.interview-card .card-media {
  height: 180px;
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.card-topic {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 8px;
}

.card-view {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-quote {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-gray-bg);
  padding: 14px 18px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  margin: 0;
}

.quote-item {
  background-color: var(--color-gray-bg);
  padding: 24px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
}

.quote-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 10px;
}

.quote-source {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-style: normal;
  font-weight: 500;
}

/* 相关推荐 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-grid .related-link {
  display: block;
  background-color: var(--color-gray-bg);
  padding: 20px;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.related-grid .related-link:hover {
  background-color: var(--color-white);
  box-shadow: var(--shadow-card-hover);
}

.related-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.related-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.related-desc {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 交叉链接 */
.cross-links {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cross-links a {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-gray-bg);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.cross-links a:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* ============================================================
   Pages —— 观看指南页
   ============================================================ */
.page-guide .guide-index {
  position: sticky;
  top: 88px;
}

.guide-index .aside-inner {
  background-color: var(--color-gray-bg);
  padding: 20px;
  border-radius: var(--radius-md);
}

.guide-index .aside-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}

/* 步骤区块 */
.guide-steps {
  margin-bottom: 40px;
}

.step-block {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.step-block .step-number {
  margin-top: 4px;
}

.step-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.step-body p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 10px;
}

/* 核验清单 */
.verify-checklist {
  background-color: var(--color-gray-bg);
  padding: 28px;
  border-radius: var(--radius-md);
  margin-bottom: 40px;
}

.checklist-list {
  counter-reset: check;
}

.checklist-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  counter-increment: check;
}

.check-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.check-label::before {
  content: counter(check);
}

.checklist-item p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.7;
}

/* 风险提醒 */
.risk-notice {
  border: 1px solid var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 28px;
  border-radius: var(--radius-md);
  margin-bottom: 40px;
}

.risk-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

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

/* FAQ 预览（指南页底部） */
.faq-preview {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.faq-more {
  margin-top: 16px;
}

/* ============================================================
   Pages —— 问题反馈页
   ============================================================ */
.faq-group {
  margin-bottom: 40px;
}

.faq-group-title {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* 反馈流程 */
.feedback-process {
  background-color: var(--color-gray-bg);
  padding: 32px;
  border-radius: var(--radius-md);
  margin-bottom: 48px;
}

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

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

.process-step .step-number {
  margin-bottom: 12px;
}

.step-title {
  font-size: 15px;
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.process-note {
  margin-top: 20px;
  padding: 16px 20px;
  background-color: var(--color-accent-light);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

.process-note p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 帮助链接 */
.help-link-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.help-link-card {
  display: block;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 24px;
  border-radius: var(--radius-md);
}

.help-link-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

/* ============================================================
   Pages —— 404 页
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 20px;
}

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.error-hint {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.btn-home {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.btn-home:hover {
  background-color: #B45309;
  color: var(--color-white);
}

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

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

  .layout-shell.sidebar-left,
  .page-layout.sidebar-left,
  .layout-shell.sidebar-right {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .layout-shell.sidebar-right {
    grid-template-columns: 1fr 240px;
  }

  .channel-block {
    grid-template-columns: 1fr 220px;
    gap: 24px;
  }

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

/* ---------- 手机：≤768px ---------- */
@media (max-width: 768px) {
  h1 { font-size: 28px; }
  h2 { font-size: 20px; }

  .header-container {
    height: 56px;
  }

  /* 汉堡菜单 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: relative;
  }

  .nav-list {
    position: absolute;
    top: 56px;
    right: 0;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    align-items: stretch;
    min-width: 220px;
    padding: 8px;
    display: none;
    z-index: 200;
  }

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

  .nav-list li a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  /* 页脚 */
  .footer-container {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 20px 24px;
  }

  /* 首页 Hero */
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 20px;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .hero-figure {
    order: -1;
  }

  /* 首页：频道 */
  .channels-index {
    padding: 32px 0;
  }

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

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

  /* 首页：专题 */
  .topic-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .topic-item img {
    width: 100%;
    height: 160px;
  }

  /* 首页：观看带 */
  .guide-band-inner {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }

  /* 首页：反馈入口 */
  .feedback-entry {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 内页布局：全部切换为单栏 */
  .layout-shell.sidebar-left,
  .page-layout.sidebar-left,
  .layout-shell.sidebar-right {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* 侧栏在正文之后（移动端顺序：正文 → 侧栏） */
  .layout-shell.sidebar-left aside,
  .page-layout.sidebar-left aside,
  .layout-shell.sidebar-right aside {
    order: 2;
    margin-top: 32px;
    position: static;
  }

  .layout-shell.sidebar-left main,
  .page-layout.sidebar-left main,
  .layout-shell.sidebar-right main {
    order: 1;
  }

  .page-header {
    padding: 20px 0 24px;
    margin-bottom: 24px;
  }

  .breadcrumb {
    padding-top: 12px;
  }

  /* 频道页 */
  .channel-block {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  /* 专题页 */
  .featured-card {
    grid-template-columns: 1fr;
  }

  .featured-media {
    min-height: 220px;
  }

  .featured-content {
    padding: 24px;
  }

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

  .card-media {
    height: 200px;
  }

  /* 访谈页 */
  .grid-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

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

  /* 指南页 */
  .step-block {
    flex-direction: column;
    gap: 12px;
  }

  .checklist-item {
    gap: 12px;
  }

  /* FAQ 页 */
  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .faq-preview {
    margin-top: 24px;
  }

  /* 动态页 */
  .news-tags {
    gap: 6px;
  }

  .news-item {
    padding-left: 16px;
  }

  /* 区块间距 */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section-title {
    margin-bottom: 12px;
  }
}

/* ---------- 小屏手机：≤480px ---------- */
@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 24px;
  }

  .channel-card img {
    height: 140px;
  }

  .topic-item img {
    height: 140px;
  }

  .featured-media {
    min-height: 180px;
  }

  .card-media {
    height: 180px;
  }

  .guide-band-inner h2 {
    font-size: 18px;
  }

  .footer-container {
    padding: 32px 16px 20px;
  }

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

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

  .trend-points {
    padding: 20px;
  }

  .verify-checklist,
  .risk-notice,
  .feedback-process {
    padding: 20px;
  }

  .process-steps {
    gap: 12px;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}