/* ==========================================================================
   YY影院 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --c-green: #2C3E2D;
  --c-green-soft: #3E5340;
  --c-brown: #8B7355;
  --c-brown-soft: #A8906F;
  --c-bg: #F7F4EF;
  --c-bg-alt: #EFEAE1;
  --c-card: #FFFFFF;
  --c-text: #333333;
  --c-text-soft: #5C564D;
  --c-line: #D9D2C7;
  --c-line-soft: #E7E1D7;

  --font-serif: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;

  --shell-wide: 1180px;
  --shell-inner: 1120px;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-soft: 0 1px 2px rgba(44, 62, 45, 0.05);
  --shadow-lift: 0 6px 18px rgba(44, 62, 45, 0.10);
}

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

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

body {
  margin: 0;
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--c-green);
  font-weight: 700;
  line-height: 1.3;
}

p {
  margin: 0 0 0.85em;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

a:hover {
  color: var(--c-brown);
}

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

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--c-brown);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

/* 页头 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 14px 24px;
}

/* 主导航 */

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-list li {
  list-style: none;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--c-text-soft);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 1px;
  background-color: var(--c-green);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s ease;
}

.nav-list a:hover {
  color: var(--c-green);
}

.nav-list a:hover::after,
.nav-list a.is-current::after {
  transform: scaleX(1);
}

.nav-list a.is-current {
  color: var(--c-green);
  font-weight: 600;
}

/* 汉堡按钮（桌面隐藏） */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: transparent;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--c-green);
  border-radius: 2px;
}

/* 主内容区 */

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.inner-main {
  max-width: var(--shell-inner);
}

/* 面包屑 */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--c-text-soft);
}

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

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

.breadcrumb-sep {
  color: var(--c-line);
}

.breadcrumb-current {
  color: var(--c-green);
  font-weight: 600;
}

/* 内页标题区 */

.page-header {
  max-width: 760px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-green);
}

.page-description {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

/* 双栏容器 */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  gap: 40px;
  align-items: start;
}

.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  gap: 40px;
  align-items: start;
}

.layout-main,
.page-content {
  min-width: 0;
}

.layout-aside,
.page-sidebar,
.home-aside {
  min-width: 0;
}

/* 页脚 */

.site-footer {
  margin-top: auto;
  background-color: var(--c-green);
  color: #D8DED6;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
  width: 100%;
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 44px 24px 32px;
}

.footer-brand p {
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: #C3CCC1;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-col {
  min-width: 0;
}

.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-col a {
  font-size: 14px;
  color: #C3CCC1;
}

.footer-col a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-copy {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 16px 24px 26px;
  font-size: 13px;
  color: #A9B4A7;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

/* --------------------------------------------------------------------------
   components · 通用组件
   -------------------------------------------------------------------------- */

/* 品牌标识 */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--c-green);
  border: 3px solid var(--c-brown-soft);
}

.brand-text {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--c-green);
  white-space: nowrap;
}

/* 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: var(--c-green);
  color: #FFFFFF;
  border-color: var(--c-green);
}

.btn-primary:hover {
  background-color: var(--c-green-soft);
  color: #FFFFFF;
}

.btn-ghost {
  background-color: transparent;
  color: var(--c-green);
  border-color: var(--c-green);
}

.btn-ghost:hover {
  background-color: var(--c-green);
  color: #FFFFFF;
}

/* 区块标题 */

.section-head {
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.section-head h2 {
  font-size: 24px;
}

.section-head p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-title {
  font-size: 24px;
  margin-bottom: 10px;
}

.section-lead {
  margin-bottom: 20px;
  font-size: 15px;
  color: var(--c-text-soft);
}

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

.link-more {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-brown);
  border-bottom: 1px solid var(--c-brown);
  padding-bottom: 2px;
}

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

/* 标签 */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.tag-list li {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--c-brown);
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

/* 侧栏通用 */

.aside-block {
  margin-bottom: 26px;
  padding: 20px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.aside-block:last-child {
  margin-bottom: 0;
}

.aside-title {
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 700;
}

.aside-block p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.aside-block p + p {
  margin-top: 10px;
}

.aside-links,
.aside-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 12px;
}

.aside-links a,
.aside-list a {
  font-size: 14px;
  color: var(--c-text-soft);
}

.aside-links a:hover,
.aside-list a:hover {
  color: var(--c-green);
  text-decoration: underline;
}

.aside-more {
  margin-top: 14px;
  font-size: 14px;
}

.aside-facts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.aside-facts li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-soft);
  padding-left: 14px;
  position: relative;
}

.aside-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background-color: var(--c-brown);
  border-radius: 50%;
}

/* 相关链接条 */

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
  padding: 16px 20px;
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-links-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-green);
}

.related-links-item {
  font-size: 14px;
  color: var(--c-text-soft);
  padding: 4px 12px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.related-links-item:hover {
  color: var(--c-green);
  border-color: var(--c-brown-soft);
}

/* 图片容器 */

.hero-media,
.channel-thumb,
.topic-thumb,
.channel-media,
.topic-intro-media,
.topic-card-media,
.ranking-thumb,
.guide-figure {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--c-bg-alt);
}

.hero-media img,
.channel-thumb img,
.topic-thumb img,
.channel-media img,
.topic-intro-media img,
.topic-card-media img,
.ranking-thumb img,
.guide-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

/* 首屏 */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 36px;
  align-items: center;
  padding-bottom: 36px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--c-line);
}

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

.hero-eyebrow {
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-brown);
}

.hero-title {
  font-size: 32px;
  line-height: 1.28;
  margin-bottom: 14px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text-soft);
  margin-bottom: 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.hero-facts li {
  font-size: 13px;
  color: var(--c-text-soft);
  padding-left: 14px;
  position: relative;
}

.hero-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  background-color: var(--c-brown);
  border-radius: 50%;
}

.hero-media {
  border: 1px solid var(--c-line);
}

.hero-media img {
  aspect-ratio: 16 / 10;
}

.hero-media figcaption {
  padding: 0 4px 4px;
}

/* 频道总览 */

.channel-overview {
  margin-bottom: 44px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.channel-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.channel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: var(--c-brown-soft);
}

.channel-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.channel-card h3 a {
  color: var(--c-green);
}

.channel-thumb {
  margin-bottom: 12px;
  border: 1px solid var(--c-line-soft);
}

.channel-thumb img {
  aspect-ratio: 16 / 9;
}

.channel-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

/* 榜单速览 */

.ranking-preview {
  margin-bottom: 44px;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ranking-item {
  display: flex;
  gap: 16px;
  padding: 16px 18px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.rank-no {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--c-green);
  border-radius: 50%;
}

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

.ranking-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.ranking-note {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text-soft);
}

/* 专题推荐 */

.topic-preview {
  margin-bottom: 8px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.topic-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.topic-thumb {
  margin-bottom: 14px;
  border: 1px solid var(--c-line-soft);
}

.topic-thumb img {
  aspect-ratio: 3 / 2;
}

.topic-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.topic-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.topic-items {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
}

.topic-items li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-soft);
  padding-left: 14px;
  position: relative;
}

.topic-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background-color: var(--c-brown);
  border-radius: 50%;
}

.topic-more {
  margin-top: 14px;
  font-size: 14px;
}

.topic-more a {
  font-weight: 600;
  color: var(--c-brown);
}

.topic-more a:hover {
  color: var(--c-green);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   pages · 频道页
   -------------------------------------------------------------------------- */

.channel-nav {
  margin-bottom: 32px;
  padding: 20px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.channel-nav h2 {
  font-size: 18px;
  margin-bottom: 14px;
}

.channel-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.channel-nav-list a {
  display: inline-block;
  padding: 8px 16px;
  min-height: 40px;
  line-height: 24px;
  font-size: 14px;
  color: var(--c-green);
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.channel-nav-list a:hover {
  background-color: var(--c-green);
  color: #FFFFFF;
  border-color: var(--c-green);
}

.channel-list {
  margin-bottom: 36px;
}

.channel-list > h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

.channel-block {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: 22px;
  padding: 20px;
  margin-bottom: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.channel-block:last-child {
  margin-bottom: 0;
}

.channel-media {
  border: 1px solid var(--c-line-soft);
}

.channel-media img {
  aspect-ratio: 4 / 3;
}

.channel-body {
  min-width: 0;
}

.channel-body h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

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

.video-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
}

.video-list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-soft);
  padding-left: 14px;
  position: relative;
}

.video-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background-color: var(--c-brown);
  border-radius: 50%;
}

.channel-filter {
  padding: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.channel-filter > h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.channel-filter > p {
  font-size: 14px;
  color: var(--c-text-soft);
  margin-bottom: 18px;
}

.filter-group {
  margin-bottom: 20px;
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group h3 {
  font-size: 15px;
  font-family: var(--font-sans);
  margin-bottom: 10px;
  color: var(--c-green);
}

.tag-filter,
.year-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-chip,
.year-chip {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-text-soft);
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.tag-chip:hover,
.year-chip:hover {
  color: var(--c-green);
  border-color: var(--c-brown-soft);
  background-color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   pages · 榜单页
   -------------------------------------------------------------------------- */

.ranking-intro {
  margin-bottom: 32px;
  padding: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.ranking-intro h2 {
  font-size: 24px;
  margin-bottom: 14px;
}

.intro-body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.intro-body p + p {
  margin-top: 10px;
}

.ranking-switch {
  margin-bottom: 32px;
}

.ranking-switch h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.switch-note {
  font-size: 14px;
  color: var(--c-text-soft);
  margin-bottom: 14px;
}

.switch-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.switch-list a {
  display: inline-block;
  padding: 8px 16px;
  min-height: 40px;
  line-height: 24px;
  font-size: 14px;
  color: var(--c-green);
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.switch-list a:hover {
  background-color: var(--c-green);
  color: #FFFFFF;
  border-color: var(--c-green);
}

.ranking-list-section {
  margin-bottom: 8px;
}

.ranking-list-section h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.list-note {
  font-size: 14px;
  color: var(--c-text-soft);
  margin-bottom: 18px;
}

.ranking-list-section .ranking-item {
  align-items: flex-start;
}

.ranking-thumb {
  flex: 0 0 auto;
  width: 132px;
  border: 1px solid var(--c-line-soft);
}

.ranking-thumb img {
  aspect-ratio: 16 / 10;
}

.ranking-rank {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--c-brown);
  border-radius: 999px;
}

.ranking-name {
  font-size: 18px;
  margin-bottom: 8px;
}

.ranking-tags {
  font-size: 13px;
  color: var(--c-brown);
  margin-bottom: 6px;
}

.ranking-reason {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages · 专题页
   -------------------------------------------------------------------------- */

.topic-intro {
  margin-bottom: 36px;
  padding: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.topic-intro-body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.topic-intro-body p + p {
  margin-top: 10px;
}

.topic-intro-media {
  margin-top: 18px;
  border: 1px solid var(--c-line-soft);
}

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

.topic-list {
  margin-bottom: 36px;
}

.topic-list .topic-card {
  margin-bottom: 22px;
}

.topic-list .topic-card:last-child {
  margin-bottom: 0;
}

.topic-list .topic-card-media {
  margin-bottom: 16px;
  border: 1px solid var(--c-line-soft);
}

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

.topic-card-title {
  font-size: 20px;
  margin-bottom: 10px;
}

.topic-card-lead {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.topic-entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
}

.topic-entry-list li {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text-soft);
  padding-left: 14px;
  position: relative;
}

.topic-entry-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background-color: var(--c-brown);
  border-radius: 50%;
}

.topic-card-more {
  margin-top: 14px;
  font-size: 14px;
}

.topic-card-more a {
  font-weight: 600;
  color: var(--c-brown);
}

.topic-card-more a:hover {
  color: var(--c-green);
  text-decoration: underline;
}

.topic-timeline {
  padding: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.timeline-list {
  position: relative;
  padding-left: 26px;
  border-left: 2px solid var(--c-line);
}

.timeline-item {
  position: relative;
  padding-bottom: 22px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-mark {
  position: absolute;
  left: -33px;
  top: 4px;
  width: 12px;
  height: 12px;
  background-color: var(--c-card);
  border: 2px solid var(--c-brown);
  border-radius: 50%;
}

.timeline-body {
  min-width: 0;
}

.timeline-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.timeline-body p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages · 观看说明页
   -------------------------------------------------------------------------- */

.browse-guide {
  margin-bottom: 36px;
}

.browse-guide > h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

.browse-guide > p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.guide-figure {
  margin: 18px 0;
  border: 1px solid var(--c-line-soft);
}

.guide-figure img {
  aspect-ratio: 16 / 9;
}

.guide-step {
  padding: 18px 20px;
  margin-bottom: 16px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-brown);
  border-radius: var(--radius);
}

.guide-step:last-child {
  margin-bottom: 0;
}

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

.guide-step p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.guide-step p + p {
  margin-top: 8px;
}

.guide-step a {
  font-weight: 600;
  color: var(--c-brown);
  border-bottom: 1px solid var(--c-brown);
}

.guide-step a:hover {
  color: var(--c-green);
  border-bottom-color: var(--c-green);
}

.feedback-guide {
  margin-bottom: 36px;
  padding: 22px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.feedback-guide > h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

.feedback-guide > p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.feedback-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.feedback-steps li {
  padding: 16px;
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.feedback-steps h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feedback-steps p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-text-soft);
}

.feedback-note {
  margin-top: 18px;
  padding-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
  border-top: 1px dashed var(--c-line);
}

.faq {
  margin-bottom: 8px;
}

.faq > h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

.faq-intro {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-soft);
  margin-bottom: 18px;
}

.faq-item {
  margin-bottom: 12px;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px;
  min-height: 44px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-green);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 400;
  color: var(--c-brown);
  transition: transform 0.24s ease;
}

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

.faq-item p {
  padding: 0 18px 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-block {
  width: 100%;
  max-width: 620px;
  padding: 40px 32px;
  text-align: center;
  background-color: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.error-code {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-brown);
  margin-bottom: 16px;
}

.error-block h1 {
  font-size: 26px;
  margin-bottom: 14px;
}

.error-block > p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 22px 0;
}

.error-links a {
  display: inline-block;
  padding: 8px 16px;
  min-height: 40px;
  line-height: 24px;
  font-size: 14px;
  color: var(--c-green);
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.error-links a:hover {
  background-color: var(--c-green);
  color: #FFFFFF;
  border-color: var(--c-green);
}

.error-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: var(--c-green);
  border-radius: var(--radius);
}

.error-home:hover {
  background-color: var(--c-green-soft);
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 980px) {
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 16px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    flex: 1 1 100%;
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
    padding: 8px 0 4px;
    border-top: 1px solid var(--c-line);
  }

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

  .nav-list a {
    display: block;
    padding: 12px 6px;
    min-height: 44px;
    font-size: 16px;
  }

  .nav-list a::after {
    display: none;
  }

  .site-main {
    padding: 24px 16px 44px;
  }

  .page-layout,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .page-title {
    font-size: 24px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero-title {
    font-size: 24px;
  }

  .channel-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .channel-block .channel-media {
    max-width: 460px;
  }

  .ranking-list-section .ranking-item {
    flex-direction: column;
    gap: 12px;
  }

  .ranking-thumb {
    width: 100%;
    max-width: 320px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-copy {
    padding: 14px 16px 22px;
  }

  .error-block {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .channel-grid,
  .topic-grid,
  .feedback-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .ranking-item {
    padding: 14px;
  }

  .related-links {
    padding: 14px 16px;
  }
}