/* ============================================================
   糖心导航站 — 全站样式表
   视觉方向：理性咨询风 × 杂志跨页感
   色彩：白 / 浅灰底 / 深灰正文 / 蓝绿点缀
   ============================================================ */

/* ============================================================
   Base — 基础变量、重置、字体、通用元素
   ============================================================ */

:root {
  --color-ink: #1F2328;
  --color-gray: #5E6870;
  --color-bg: #F6F7F8;
  --color-white: #FFFFFF;
  --color-accent: #1D7A72;
  --color-accent-soft: #E3EDEC;
  --color-border: #DDE2E5;
  --color-ink-soft: #3A4148;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-wide: 1200px;
  --container-narrow: 1120px;
  --gutter: 20px;
}

*,
*::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-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover,
a:focus-visible {
  color: var(--color-ink);
  outline: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-ink);
}

p {
  line-height: 1.8;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

details {
  display: block;
}

summary {
  cursor: pointer;
  list-style: none;
}

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

/* 屏幕阅读器辅助类 */
.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;
}

/* ============================================================
   Layout — 全站统一骨架
   ============================================================ */

/* 全站页面级容器 */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-white);
}

/* 首页 body 类 */
.site-home {
  background-color: var(--color-white);
}

/* 内页 body 类 */
.site-inner {
  background-color: var(--color-white);
}

/* 错误页 body 类 */
.site-error {
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 页头统一骨架 */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
}

/* 品牌文字 */
.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  flex-shrink: 0;
  line-height: 1.2;
}

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

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 2px;
  align-items: center;
}

.nav-list li {
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-ink-soft);
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
  line-height: 1.4;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background-color: var(--color-bg);
  color: var(--color-ink);
}

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

/* 汉堡按钮，默认隐藏 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  border-radius: 4px;
  align-items: center;
}

.nav-toggle .toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* 实用工具栏 — 首页 */
.utility-bar {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.utility-bar .utility-note,
.utility-bar .utility-text {
  display: inline-block;
  padding: 6px 20px;
  color: var(--color-gray);
}

.utility-nav {
  display: inline-flex;
  gap: 8px;
  padding: 0 20px;
}

.utility-nav a {
  display: inline-block;
  padding: 6px 10px;
  color: var(--color-gray);
  font-size: 14px;
  line-height: 1.4;
}

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

/* 工具条 — 内页统一样式 */
.utility-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
}

.utility-status,
.utility-text {
  color: var(--color-gray);
  font-size: 14px;
}

.utility-links {
  display: flex;
  gap: 16px;
}

.utility-links a {
  display: inline-block;
  padding: 6px 0;
  color: var(--color-gray);
  font-size: 14px;
  line-height: 1.4;
}

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

/* 主内容区 — 首页 */
.home-main {
  flex: 1;
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 主内容区 — 内页 */
.inner-main {
  flex: 1;
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 页脚 */
.site-footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 48px var(--gutter) 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand .footer-logo {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-gray);
  max-width: 240px;
  line-height: 1.7;
}

.footer-nav h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.footer-nav ul {
  list-style: none;
}

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

.footer-nav ul a {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px var(--gutter);
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 面包屑 — 内页统一 */
.breadcrumb {
  padding: 20px 0 4px;
  font-size: 14px;
  color: var(--color-gray);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  color: var(--color-gray);
  opacity: 0.6;
}

.breadcrumb-current {
  color: var(--color-ink-soft);
}

/* 页面标题区 — 内页统一 */
.page-header {
  padding: 20px 0 28px;
}

.page-title {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-ink);
}

.page-description {
  font-size: 16px;
  color: var(--color-gray);
  max-width: 68em;
  line-height: 1.8;
}

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

/* 区块标题 */
.section-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
}

/* 区块标题行 */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.section-more {
  font-size: 14px;
  color: var(--color-accent);
  padding: 4px 0;
  white-space: nowrap;
}

.section-more:hover {
  color: var(--color-ink);
}

/* 区块导语 */
.section-intro {
  color: var(--color-gray);
  font-size: 16px;
  margin-bottom: 24px;
  max-width: 68em;
  line-height: 1.8;
}

/* 文本链接 */
.text-link {
  display: inline-block;
  font-size: 15px;
  color: var(--color-accent);
  font-weight: 600;
  padding: 4px 0;
}

.text-link:hover {
  color: var(--color-ink);
}

/* 频道标签 */
.channel-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.channel-tags a {
  display: inline-block;
  font-size: 13px;
  color: var(--color-gray);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 4px 12px;
  line-height: 1.6;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* 卡片通用 */
.channel-card,
.step-card,
.related-card,
.action-card,
.help-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-white);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.channel-card:hover,
.step-card:hover,
.related-card:hover,
.action-card:hover,
.help-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(31, 35, 40, 0.06);
}

/* 详情手风琴 — 通用 */
details.qa-item,
details.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

details.qa-item summary,
details.faq-item summary {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  padding: 8px 32px 8px 0;
  position: relative;
  transition: color 0.2s ease;
  line-height: 1.5;
}

details.qa-item summary::after,
details.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-gray);
  transition: transform 0.2s ease;
}

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

details.qa-item summary:hover,
details.faq-item summary:hover {
  color: var(--color-accent);
}

details.qa-item p,
details.faq-item p {
  font-size: 15px;
  color: var(--color-gray);
  padding: 8px 0 4px;
  max-width: 68em;
  line-height: 1.8;
}

details.qa-item p a,
details.faq-item p a {
  color: var(--color-accent);
  display: inline-block;
  margin-top: 8px;
  font-weight: 600;
}

/* 图与说明通用 */
figure {
  margin: 0;
}

figcaption {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  margin-top: 8px;
}

/* 图片通用约束 */
img {
  width: auto;
  height: auto;
}

/* 按钮 — 主操作 */
.btn-primary,
.hero-action {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 6px;
  border: 1px solid var(--color-accent);
  transition: background-color 0.2s ease, border-color 0.2s ease;
  line-height: 1.5;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover,
.hero-action:hover {
  background-color: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-white);
}

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

/* 首屏安全区 */
.hero-safe-area {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
}

.hero-copy {
  max-width: 560px;
}

.hero-copy h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 18px;
  color: var(--color-ink-soft);
  margin-bottom: 12px;
  line-height: 1.7;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: 24px;
  line-height: 1.8;
}

.hero-action {
  margin-bottom: 24px;
}

.hero-copy .channel-tags {
  margin-top: 0;
}

.hero-figure {
  display: block;
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 8px;
}

/* 站内导览说明 */
.station-intro {
  border-top: 1px solid var(--color-border);
  padding: 48px 0;
}

.station-intro .section-title {
  margin-bottom: 20px;
}

.station-intro p {
  max-width: 68em;
  color: var(--color-gray);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
}

/* 频道速览 */
.channel-overview {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.channel-card a {
  display: block;
  padding: 16px;
  height: 100%;
  color: inherit;
}

.channel-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 14px;
}

.channel-card h3 {
  font-size: 18px;
  margin-bottom: 6px;
  font-weight: 600;
}

.channel-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 10px;
}

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

/* 观看路线预览 */
.watchlist-preview {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.route-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.route-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.route-item:first-child {
  border-top: 1px solid var(--color-border);
}

.route-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.route-copy {
  flex: 1;
}

.route-copy h3 {
  font-size: 18px;
  margin-bottom: 4px;
  font-weight: 600;
}

.route-copy p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  max-width: 60em;
}

.route-item > a {
  font-size: 14px;
  color: var(--color-accent);
  white-space: nowrap;
  font-weight: 600;
  padding: 4px 0;
}

.route-item > a:hover {
  color: var(--color-ink);
}

/* 指南步骤摘要 */
.guide-step-preview {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.step-card {
  padding: 24px;
  position: relative;
}

.step-card .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 14px;
}

.step-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
  font-weight: 600;
}

.step-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.step-card a {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
}

/* 内容对照结论区 */
.compare-takeaway {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.takeaway-copy p {
  color: var(--color-gray);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
  max-width: 60em;
}

.takeaway-example {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
}

.takeaway-example span {
  font-size: 14px;
  color: var(--color-ink-soft);
  padding: 8px 12px;
  background-color: var(--color-white);
  border-radius: 4px;
  border-left: 3px solid var(--color-accent);
  line-height: 1.6;
}

/* FAQ预览 */
.qa-preview {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.qa-list {
  max-width: 860px;
}

/* 边界提示条 */
.boundary-help {
  border: 1px solid var(--color-accent);
  background-color: var(--color-accent-soft);
  border-radius: 8px;
  padding: 24px 28px;
  margin: 48px 0;
}

.boundary-help .boundary-note {
  font-size: 15px;
  color: var(--color-ink-soft);
  line-height: 1.8;
  margin-bottom: 8px;
}

.boundary-help .boundary-note a {
  color: var(--color-accent);
  font-weight: 600;
  padding: 0 4px;
  display: inline-block;
}

.boundary-help .help-link {
  font-size: 14px;
}

.boundary-help .help-link a {
  display: inline-block;
  padding: 6px 0;
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   Pages — 频道分类页
   ============================================================ */

/* 频道快速锚点索引 */
.tag-anchor-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 0 24px;
}

.tag-anchor-index a {
  display: inline-block;
  font-size: 14px;
  color: var(--color-ink-soft);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 6px 16px;
  transition: border-color 0.2s ease, color 0.2s ease;
  line-height: 1.5;
}

.tag-anchor-index a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* 频道图文导览区 */
.channel-guide {
  border-top: 1px solid var(--color-border);
  padding-top: 40px;
}

.channel-guide > .section-title {
  margin-bottom: 32px;
}

/* 频道行 — 左右交替 */
.channel-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
}

.channel-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 8px;
}

.channel-row .channel-content h3 {
  font-size: 22px;
  margin-bottom: 12px;
  font-weight: 600;
}

.channel-row .channel-content p {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: 10px;
  line-height: 1.8;
  max-width: 46em;
}

.channel-row .channel-content .channel-tags {
  margin-top: 16px;
}

/* 选择建议 */
.selection-advice {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

.selection-advice h2 {
  font-size: 26px;
  margin-bottom: 16px;
  font-weight: 600;
}

.selection-advice p {
  color: var(--color-gray);
  font-size: 16px;
  line-height: 1.8;
  max-width: 68em;
  margin-bottom: 12px;
}

.selection-advice p a {
  color: var(--color-accent);
  font-weight: 600;
  display: inline-block;
  padding: 2px 0;
}

/* 过渡到对照页 */
.transition-to-compare {
  padding: 48px 0;
}

.transition-to-compare h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.transition-to-compare p {
  color: var(--color-gray);
  font-size: 16px;
  max-width: 68em;
  line-height: 1.8;
}

.transition-to-compare p a {
  color: var(--color-accent);
  font-weight: 600;
  display: inline-block;
  padding: 2px 0;
}

/* ============================================================
   Pages — 观看路线页
   ============================================================ */

/* 场景选择引导 */
.scene-selector {
  padding: 8px 0 32px;
}

.scene-selector h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.scene-selector > p {
  color: var(--color-gray);
  font-size: 15px;
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 20px;
}

.scene-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.scene-tag {
  display: inline-block;
  font-size: 14px;
  color: var(--color-ink-soft);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 8px 20px;
  transition: border-color 0.2s ease, color 0.2s ease;
  line-height: 1.5;
}

.scene-tag:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* 观看路线区块 */
.watch-route {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.route-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.route-heading .route-number {
  width: 40px;
  height: 40px;
  font-size: 18px;
}

.route-heading h2 {
  font-size: 24px;
  font-weight: 600;
}

.route-intro {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 24px;
}

.route-step-list {
  list-style: none;
  counter-reset: route-step;
  margin-bottom: 24px;
}

.route-step {
  position: relative;
  padding: 16px 0 16px 56px;
  border-bottom: 1px solid var(--color-border);
  counter-increment: route-step;
}

.route-step::before {
  content: counter(route-step);
  position: absolute;
  left: 0;
  top: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.route-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}

.route-step p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  max-width: 60em;
}

/* 路线媒体图 */
.route-media {
  margin: 24px 0 0;
}

.route-media figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
}

.route-media figcaption {
  font-size: 14px;
  color: var(--color-gray);
  margin-top: 8px;
}

/* 路线说明 */
.route-note {
  font-size: 14px;
  color: var(--color-gray);
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
  margin-top: 20px;
  line-height: 1.7;
}

/* 前后路线切换 */
.route-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.route-prev,
.route-next {
  flex: 1;
  min-width: 160px;
}

.route-next {
  text-align: right;
}

.route-prev a,
.route-next a {
  display: inline-block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-gray);
  transition: color 0.2s ease;
  line-height: 1.5;
}

.route-prev a::before {
  content: '← ';
}

.route-next a::after {
  content: ' →';
}

.route-prev a:hover,
.route-next a:hover {
  color: var(--color-accent);
}

/* 底部反馈 */
.watchlist-feedback {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.watchlist-feedback h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.watchlist-feedback p {
  color: var(--color-gray);
  font-size: 15px;
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 8px;
}

.watchlist-feedback p a {
  color: var(--color-accent);
  font-weight: 600;
  display: inline-block;
  padding: 2px 0;
}

/* ============================================================
   Pages — 内容对照页
   ============================================================ */

/* 先看结论 */
.conclusion-block {
  padding: 8px 0 32px;
}

.conclusion-block h2 {
  font-size: 26px;
  margin-bottom: 16px;
  font-weight: 600;
}

.content-media-inline {
  max-width: 320px;
  margin: 0 0 20px;
}

.content-media-inline img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
}

.content-media-inline figcaption {
  font-size: 14px;
  color: var(--color-gray);
  margin-top: 6px;
}

.conclusion-content {
  max-width: 68em;
}

.conclusion-content p {
  color: var(--color-gray);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 12px;
}

/* 统一维度表 */
.comparison-table-section {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.comparison-table-section h2 {
  font-size: 26px;
  margin-bottom: 20px;
  font-weight: 600;
}

.table-scroll-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

.comparison-table thead th {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-weight: 600;
  text-align: left;
  padding: 14px 16px;
  border-bottom: 2px solid var(--color-border);
  line-height: 1.5;
  white-space: nowrap;
}

.comparison-table tbody th {
  background-color: var(--color-white);
  color: var(--color-ink);
  font-weight: 600;
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.comparison-table tbody td {
  color: var(--color-gray);
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.7;
  vertical-align: top;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* 表格注解 */
.table-note {
  font-size: 14px;
  color: var(--color-gray);
  margin-top: 14px;
  line-height: 1.7;
}

/* 阅读建议 */
.reading-advice {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.reading-advice h2 {
  font-size: 26px;
  margin-bottom: 20px;
  font-weight: 600;
}

.advice-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.advice-list li {
  background-color: var(--color-bg);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--color-border);
}

.advice-list h3 {
  font-size: 16px;
  margin-bottom: 6px;
  font-weight: 600;
}

.advice-list p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 相关入口 */
.related-links {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.related-links h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.related-links > p {
  color: var(--color-gray);
  font-size: 15px;
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 20px;
}

.related-link-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-card {
  display: flex;
  flex-direction: column;
  padding: 20px 24px;
  color: inherit;
  min-height: 100px;
}

.related-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
  display: inline-block;
}

.related-card-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.related-card:hover .related-card-title {
  color: var(--color-accent);
}

/* ============================================================
   Pages — 观看指南页
   ============================================================ */

/* 入口核验四步 */
.entry-check-steps {
  padding: 8px 0 32px;
}

.entry-check-steps h2 {
  font-size: 26px;
  margin-bottom: 16px;
  font-weight: 600;
}

.entry-check-steps > .section-intro {
  margin-bottom: 32px;
}

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

.check-step:first-of-type {
  border-top: 1px solid var(--color-border);
}

.check-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 6px;
  max-width: 60em;
}

/* 信息卡读法 */
.content-card-explainer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.content-card-explainer h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.content-card-explainer > .section-intro {
  margin-bottom: 24px;
}

.explainer-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 8px;
}

.explainer-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.explainer-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px 18px;
}

.explainer-item h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.explainer-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 播放问题处理 */
.playback-problems {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.playback-problems h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.playback-problems > .section-intro {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 20px;
}

.playback-problems > .section-intro a {
  color: var(--color-accent);
  font-weight: 600;
}

.problem-item {
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
  margin-bottom: 16px;
}

.problem-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.problem-item p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.7;
  max-width: 60em;
}

/* 反馈位置 */
.feedback-position {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.feedback-position h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.feedback-position > p {
  color: var(--color-gray);
  font-size: 15px;
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 16px;
}

.feedback-position > p a {
  color: var(--color-accent);
  font-weight: 600;
}

.feedback-links {
  list-style: none;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.feedback-links li {
  display: inline-block;
}

.feedback-links a {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease;
  line-height: 1.5;
}

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

/* ============================================================
   Pages — 观看问题页
   ============================================================ */

/* 问题索引 */
.question-index {
  padding: 8px 0 32px;
}

.question-index h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.section-note {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 68em;
  line-height: 1.8;
  margin-bottom: 20px;
}

.index-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.index-list li {
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}

.index-list li:nth-child(2n) {
  border-right: none;
}

.index-list li:nth-last-child(-n+2) {
  border-bottom: none;
}

.index-list a {
  display: flex;
  align-items: center;
  padding: 12px 18px;
  font-size: 15px;
  color: var(--color-ink-soft);
  line-height: 1.6;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 48px;
}

.index-list a::before {
  content: 'Q';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
  margin-right: 12px;
  flex-shrink: 0;
}

.index-list a:hover {
  background-color: var(--color-bg);
  color: var(--color-ink);
}

/* FAQ分组 */
.faq-group {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.faq-group > h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.group-desc {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: 16px;
  line-height: 1.8;
  max-width: 68em;
}

.faq-accordion {
  max-width: 860px;
}

.faq-answer p {
  padding: 4px 0;
}

/* 路径示意图 */
.path-illustration {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.path-illustration h2 {
  font-size: 26px;
  margin-bottom: 20px;
  font-weight: 600;
}

.path-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.path-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 8px;
}

.path-text p {
  color: var(--color-gray);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 10px;
  max-width: 46em;
}

/* 未解决问题 */
.unresolved-actions {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.unresolved-actions h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 600;
}

.unresolved-actions > p {
  color: var(--color-gray);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 68em;
}

.action-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.action-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  color: inherit;
}

.action-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-ink);
}

.action-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}

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

/* ============================================================
   Pages — 站内说明页
   ============================================================ */

/* 定位声明 */
.mission-statement {
  padding: 8px 0 32px;
}

.mission-statement h2 {
  font-size: 26px;
  margin-bottom: 16px;
  font-weight: 600;
}

.mission-statement p {
  color: var(--color-gray);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 14px;
  max-width: 68em;
}

/* 边界对照双栏 */
.scope-block {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.scope-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.do-list,
.not-do-list {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px;
}

.do-list h2,
.not-do-list h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.do-list h2 {
  color: var(--color-accent);
}

.not-do-list h2 {
  color: var(--color-gray);
}

.do-list ul,
.not-do-list ul {
  list-style: none;
}

.do-list ul li,
.not-do-list ul li {
  position: relative;
  padding: 8px 0 8px 28px;
  font-size: 15px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  border-bottom: 1px solid var(--color-bg);
}

.do-list ul li:last-child,
.not-do-list ul li:last-child {
  border-bottom: none;
}

.do-list ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--color-accent);
  font-weight: 700;
}

.not-do-list ul li::before {
  content: '×';
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--color-gray);
  font-weight: 700;
}

.do-list ul li strong,
.not-do-list ul li strong {
  font-weight: 600;
  color: var(--color-ink);
}

/* 边界提示 */
aside.boundary-note {
  border: 1px solid var(--color-accent);
  border-radius: 8px;
  background-color: var(--color-accent-soft);
  padding: 20px 24px;
  margin: 32px 0;
}

aside.boundary-note p {
  font-size: 15px;
  color: var(--color-ink-soft);
  line-height: 1.8;
}

aside.boundary-note p strong {
  color: var(--color-ink);
}

aside.boundary-note a {
  color: var(--color-accent);
  font-weight: 600;
  padding: 0 4px;
  display: inline-block;
}

/* 路径图片区 */
.path-image {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.path-image h2 {
  font-size: 26px;
  margin-bottom: 20px;
  font-weight: 600;
}

.path-image .path-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 8px;
}

.path-image .path-figure figcaption {
  font-size: 14px;
  color: var(--color-gray);
  margin-top: 8px;
  max-width: 68em;
}

/* 帮助入口卡片 */
.help-links {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.help-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
}

.help-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.help-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}

.help-card a {
  display: inline-block;
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  padding: 4px 0;
}

/* ============================================================
   Pages — 404 页面
   ============================================================ */

.error-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}

.error-panel {
  max-width: 560px;
  width: 100%;
  text-align: left;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 48px;
}

.error-code {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.error-panel h1 {
  font-size: 32px;
  margin-bottom: 12px;
  font-weight: 700;
}

.error-lead {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: 24px;
  line-height: 1.8;
}

.error-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.error-actions .btn-primary {
  min-height: 44px;
}

.error-actions a:not(.btn-primary) {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-ink-soft);
  font-size: 15px;
  font-weight: 600;
  min-height: 44px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.error-actions a:not(.btn-primary):hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.error-tip {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.error-tip a {
  color: var(--color-accent);
  font-weight: 600;
  display: inline-block;
  padding: 2px 0;
}

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

/* 平板及以下 */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .hero-safe-area {
    gap: 32px;
  }

  .hero-figure img {
    height: 280px;
  }

  .channel-card-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .steps-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

  .advice-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .help-links {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

/* 手机断点 */
@media (max-width: 768px) {
  /* 页头 */
  .header-inner {
    height: 56px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(31, 35, 40, 0.06);
    display: block;
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 16px;
    gap: 0;
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-bg);
    border-radius: 0;
  }

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

  .nav-list a.is-current {
    background-color: transparent;
    color: var(--color-accent);
  }

  /* 工具条 */
  .utility-bar .utility-note,
  .utility-bar .utility-text {
    display: none;
  }

  .utility-nav {
    display: flex;
    justify-content: flex-end;
    padding: 4px 20px;
    width: 100%;
  }

  .utility-inner {
    flex-wrap: wrap;
    gap: 4px;
  }

  .utility-status {
    display: none;
  }

  .utility-links {
    width: 100%;
    justify-content: flex-end;
    gap: 12px;
  }

  .utility-links a {
    padding: 4px 0;
    font-size: 13px;
  }

  /* 首页首屏 */
  .hero-safe-area {
    grid-template-columns: 1fr;
    padding: 32px 0 32px;
    gap: 24px;
  }

  .hero-copy h1 {
    font-size: 30px;
  }

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

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

  /* 首页区块 */
  .station-intro,
  .channel-overview,
  .watchlist-preview,
  .guide-step-preview,
  .compare-takeaway,
  .qa-preview {
    padding: 32px 0;
  }

  .channel-card-row {
    grid-template-columns: 1fr;
    overflow-x: auto;
    display: flex;
    scroll-snap-type: x mandatory;
    gap: 16px;
    padding-bottom: 8px;
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .channel-card {
    flex: 0 0 260px;
    scroll-snap-align: start;
  }

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

  .route-item {
    gap: 14px;
  }

  .route-number {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

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

  .compare-takeaway {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .takeaway-example {
    padding: 18px;
  }

  .boundary-help {
    margin: 32px 0;
    padding: 20px;
  }

  /* 内页标题 */
  .page-title {
    font-size: 30px;
  }

  .page-header {
    padding: 16px 0 20px;
  }

  .breadcrumb {
    padding-top: 14px;
  }

  /* 频道页 */
  .channel-row {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 0;
  }

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

  .channel-row .channel-content h3 {
    font-size: 20px;
  }

  /* 观看路线页 */
  .route-step {
    padding: 14px 0 14px 48px;
  }

  .route-step::before {
    width: 32px;
    height: 32px;
    top: 16px;
    font-size: 13px;
  }

  .route-heading h2 {
    font-size: 20px;
  }

  .route-prev,
  .route-next {
    flex: 1 1 100%;
    text-align: left;
  }

  .route-next {
    text-align: left;
  }

  /* 对照页 */
  .advice-list {
    grid-template-columns: 1fr;
  }

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

  .conclusion-block {
    flex-direction: column;
  }

  /* 指南页 */
  .check-step {
    flex-direction: column;
    gap: 12px;
    padding: 20px 0;
  }

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

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

  /* 问答页 */
  .index-list {
    grid-template-columns: 1fr;
  }

  .index-list li {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

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

  .path-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  /* 站内说明 */
  .scope-columns {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

  .error-panel h1 {
    font-size: 26px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    padding-top: 36px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    padding: 16px 20px;
  }
}

/* 小屏手机细调 */
@media (max-width: 480px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .channel-card {
    flex-basis: 220px;
  }

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

  .route-item > a {
    margin-left: 50px;
  }

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

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

/* 减少动态效果 —— 尊重用户偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}