/* ==========================================================================
   爱壹帆影视 allssjj.com — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

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

body {
  margin: 0;
  background: #ffffff;
  color: #1a1d21;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
p,
figure,
ul,
ol,
dl {
  margin: 0;
}

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

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

a {
  color: #1f6feb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

input {
  font: inherit;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.3;
  color: #1a1d21;
}

h2 {
  font-size: 20px;
}

h3 {
  font-size: 16px;
}

:focus-visible {
  outline: 2px solid #1f6feb;
  outline-offset: 2px;
}

/* 跳转链接：默认移出视口，聚焦时回到左上角 */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
  padding: 10px 16px;
  background: #1f6feb;
  color: #ffffff;
  font-size: 14px;
  transform: translateY(-120%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   layout：容器与骨架
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffff;
  border-bottom: 1px solid #e4e7eb;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 56px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  color: #1a1d21;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.brand:hover {
  text-decoration: none;
}

.brand-bar {
  display: block;
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: #1f6feb;
}

.brand-name {
  white-space: nowrap;
}

.main-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.4;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  color: #1f6feb;
  border-bottom-color: #1f6feb;
  text-decoration: none;
}

.nav-link.is-current {
  color: #1f6feb;
  font-weight: 700;
  border-bottom-color: #1f6feb;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid #e4e7eb;
  border-radius: 6px;
  background: #ffffff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: #1a1d21;
}

.site-main {
  display: block;
  padding-bottom: 48px;
}

.inner-main {
  padding-top: 20px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: #5d6570;
}

.breadcrumb a {
  color: #5d6570;
}

.breadcrumb a:hover {
  color: #1f6feb;
}

.breadcrumb-sep {
  color: #b6bcc5;
}

.breadcrumb-current {
  color: #1a1d21;
  font-weight: 700;
}

/* 页面标题区 */
.page-header {
  padding: 16px 0 24px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: #1a1d21;
}

.site-footer {
  border-top: 1px solid #e4e7eb;
  background: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  min-height: 44px;
  padding-top: 10px;
  padding-bottom: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: #5d6570;
}

.footer-brand {
  font-weight: 700;
  color: #1a1d21;
}

.footer-boundary {
  color: #5d6570;
}

.footer-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 14px;
}

.footer-nav a {
  color: #5d6570;
  padding: 2px 0;
}

.footer-nav a:hover {
  color: #1a1d21;
  text-decoration: none;
}

.footer-copy {
  color: #8a929c;
}

/* 内页分区通用 */
.section {
  margin-bottom: 32px;
}

.section-alt {
  background: #f6f7f9;
  border-radius: 8px;
  padding: 24px 20px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: #1a1d21;
}

.section-bar {
  display: inline-block;
  width: 4px;
  height: 16px;
  border-radius: 2px;
  background: #1f6feb;
  flex: 0 0 auto;
}

.section-desc,
.section-note,
.section-lead {
  margin-top: 8px;
  max-width: 62em;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.7;
}

.section-footnote {
  margin-top: 12px;
  color: #8a929c;
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   components：通用部件
   -------------------------------------------------------------------------- */
/* 分享按钮 */
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid #e4e7eb;
  border-radius: 6px;
  background: #ffffff;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.share-btn:hover {
  border-color: #1f6feb;
  color: #1f6feb;
}

.share-btn-inline {
  min-height: 36px;
}

.share-panel {
  border-top: 1px solid #e4e7eb;
  background: #f6f7f9;
}

.share-panel[hidden] {
  display: none;
}

.share-panel .shell {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.share-panel-label {
  font-size: 12px;
  color: #5d6570;
}

.share-url {
  flex: 1 1 260px;
  min-width: 0;
  height: 34px;
  padding: 0 10px;
  border: 1px solid #e4e7eb;
  border-radius: 6px;
  background: #ffffff;
  color: #1a1d21;
  font-size: 13px;
}

/* 频道色点 */
.channel-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
  background: #1f6feb;
}

.dot-series,
.bar-series,
.thumb-series,
.dimension-dot.dot-series {
  background: #2f6fed;
}

.dot-doc,
.bar-doc,
.thumb-doc {
  background: #17a673;
}

.dot-animation,
.bar-animation,
.thumb-animation {
  background: #e0742b;
}

.dot-short,
.bar-short,
.thumb-short {
  background: #8b5cf6;
}

.dot-interview,
.bar-interview,
.thumb-interview {
  background: #0e9aa7;
}

.dot-music,
.bar-music,
.thumb-music {
  background: #d6478f;
}

/* 时长角标 */
.duration-badge,
.length-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  background: #1a1d21;
  color: #ffffff;
  font-size: 12px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* 文字链接 */
.text-link {
  display: inline-block;
  margin-top: 12px;
  color: #1f6feb;
  font-size: 14px;
}

.text-link::after {
  content: " →";
}

/* 图片容器 */
figure img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  object-fit: cover;
  background: #f6f7f9;
}

figcaption {
  margin-top: 8px;
  color: #5d6570;
  font-size: 12px;
  line-height: 1.6;
}

/* 页面头部说明条（内页） */
.page-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding-bottom: 24px;
}

.page-head-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-lead,
.page-head-summary,
.page-summary {
  max-width: 62em;
  color: #5d6570;
  font-size: 15px;
  line-height: 1.75;
}

.page-head-share,
.page-share {
  flex: 0 0 auto;
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.home-main {
  padding-top: 0;
}

/* 首屏 */
.hero {
  padding: 32px 0;
  background: #ffffff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 32px;
  align-items: center;
}

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

.hero-kicker {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 10px;
  border-radius: 4px;
  background: #eef4ff;
  color: #1f6feb;
  font-size: 12px;
  line-height: 1.6;
}

.hero-copy h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  color: #1a1d21;
}

.hero-summary {
  margin-top: 14px;
  max-width: 34em;
  color: #5d6570;
  font-size: 15px;
  line-height: 1.75;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: #1f6feb;
  border-color: #1f6feb;
  color: #ffffff;
}

.btn-primary:hover {
  background: #1a5fd0;
  border-color: #1a5fd0;
}

.btn-ghost {
  background: #ffffff;
  border-color: #e4e7eb;
  color: #1a1d21;
}

.btn-ghost:hover {
  border-color: #1f6feb;
  color: #1f6feb;
}

.hero-note {
  margin-top: 16px;
  color: #8a929c;
  font-size: 12px;
  line-height: 1.6;
}

.hero-figure {
  margin: 0;
  min-width: 0;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  object-fit: cover;
}

.hero-figcaption {
  margin-top: 8px;
  color: #5d6570;
  font-size: 12px;
  line-height: 1.6;
}

/* 三选维度条 */
.dimensions {
  padding: 8px 0 32px;
}

.dimension-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.dimension-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "dot title arrow"
    "dot text arrow";
  align-items: center;
  column-gap: 10px;
  row-gap: 2px;
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.dimension-card:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
  text-decoration: none;
}

.dimension-dot {
  grid-area: dot;
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1f6feb;
}

.dimension-title {
  grid-area: title;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.dimension-text {
  grid-area: text;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.6;
}

.dimension-arrow {
  grid-area: arrow;
  color: #b6bcc5;
  font-size: 16px;
}

.dimension-card:hover .dimension-arrow {
  color: #1f6feb;
}

/* 双栏主体 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px;
  align-items: start;
  padding-top: 8px;
  padding-bottom: 32px;
}

.layout-main {
  min-width: 0;
}

.layout-main > section {
  margin-bottom: 32px;
}

.layout-main > section:last-child {
  margin-bottom: 0;
}

/* 本期策展 */
.curation-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 16px;
  margin-top: 16px;
  padding: 12px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease;
}

.curation-feature:hover {
  border-color: #1f6feb;
}

.curation-media {
  position: relative;
  margin: 0;
  min-width: 0;
}

.curation-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  object-fit: cover;
}

.curation-media .duration-badge {
  position: absolute;
  left: 8px;
  bottom: 8px;
}

.curation-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.curation-issue {
  color: #1f6feb;
  font-size: 12px;
  line-height: 1.6;
}

.curation-name {
  margin-top: 4px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.curation-reason {
  margin-top: 8px;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.7;
}

.curation-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.curation-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.curation-item:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
}

.curation-item .channel-dot {
  margin-top: 7px;
}

.curation-item-body {
  min-width: 0;
}

.curation-item-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.curation-item-text {
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.6;
}

/* 新到片目 */
.arrival-list {
  margin-top: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
}

.arrival-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid #e4e7eb;
  transition: background 0.15s ease;
}

.arrival-item:last-child {
  border-bottom: 0;
}

.arrival-item:hover {
  background: #f6f7f9;
}

.arrival-thumb {
  display: block;
  width: 64px;
  height: 40px;
  border-radius: 4px;
  background: #f6f7f9;
}

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

.arrival-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.arrival-text {
  margin-top: 2px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.6;
}

.arrival-link {
  font-size: 13px;
  color: #1f6feb;
  white-space: nowrap;
}

/* 侧栏 */
.layout-side {
  min-width: 0;
}

.side-block {
  margin-bottom: 24px;
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
}

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

.side-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.side-desc {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.6;
}

.topic-dot-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.topic-dot-item {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 4px 0;
  border-bottom: 1px dashed #eef0f3;
}

.topic-dot-item:last-child {
  border-bottom: 0;
}

.topic-dot-item a {
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.5;
}

.topic-dot-item a:hover {
  color: #1f6feb;
}

.side-faq-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.side-faq-list li {
  font-size: 14px;
  line-height: 1.6;
  color: #1a1d21;
}

.side-faq-list a {
  color: #1a1d21;
}

.side-faq-list a:hover {
  color: #1f6feb;
}

/* 频道彩条速览 */
.channel-strip {
  padding: 32px 0;
  background: #f6f7f9;
}

.channel-strip-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.channel-strip-card {
  display: flex;
  align-items: stretch;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.channel-strip-card:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
}

.channel-strip-bar {
  display: block;
  width: 4px;
  border-radius: 2px;
  flex: 0 0 auto;
  background: #1f6feb;
}

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

.channel-strip-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.channel-strip-text {
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.6;
}

/* 观看准备摘要 */
.prep-summary {
  padding: 32px 0 8px;
}

.prep-summary .prep-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.prep-summary .prep-card {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
}

.prep-summary .prep-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.prep-summary .prep-text {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   pages：频道速查
   -------------------------------------------------------------------------- */
.section-basis .basis-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 16px;
  align-items: start;
}

.basis-text {
  min-width: 0;
}

.basis-text p {
  margin-bottom: 12px;
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

.basis-text p:last-of-type {
  margin-bottom: 0;
}

.basis-points {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.basis-points li {
  position: relative;
  padding-left: 16px;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.7;
}

.basis-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1f6feb;
}

.basis-figure {
  margin: 0;
  min-width: 0;
}

.basis-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

.section-channels {
  margin-top: 32px;
}

.channel-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.channel-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 18px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease;
}

.channel-item:hover {
  border-color: #1f6feb;
}

.channel-id {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}

.channel-id .channel-dot {
  margin-top: 8px;
}

.channel-name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

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

.channel-scope {
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.75;
}

.channel-tags,
.channel-length {
  margin-top: 8px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

.channel-tags .tag-label,
.channel-length .tag-label {
  display: inline-block;
  margin-right: 6px;
  color: #8a929c;
}

.channel-length .length-badge {
  margin-right: 6px;
}

.channel-link {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
}

/* 题材词对应表 */
.section-map {
  margin-top: 32px;
}

.map-table {
  margin-top: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
}

.map-row {
  display: grid;
  grid-template-columns: 180px 160px minmax(0, 1fr);
  gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid #e4e7eb;
}

.map-row:last-child {
  border-bottom: 0;
}

.map-head {
  background: #f6f7f9;
  font-weight: 700;
}

.map-cell {
  min-width: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #1a1d21;
}

.map-head .map-cell {
  font-size: 13px;
  color: #5d6570;
}

.map-row:not(.map-head):hover {
  background: #f6f7f9;
}

/* 频道与片单对应 */
.section-bridge {
  margin-top: 32px;
}

.bridge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.bridge-card {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.bridge-card:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
  text-decoration: none;
}

.bridge-card h3 {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.bridge-card p {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

.bridge-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: #1f6feb;
}

/* --------------------------------------------------------------------------
   pages：主题策展
   -------------------------------------------------------------------------- */
.page-title {
  font-size: 28px;
}

.page-title-block {
  padding-bottom: 24px;
}

.page-title-inner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-title-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-title-summary,
.page-title-lead {
  max-width: 62em;
  color: #5d6570;
  font-size: 15px;
  line-height: 1.75;
}

/* 当期主题 */
.topic-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 16px;
  align-items: start;
}

.topic-intro-text {
  min-width: 0;
}

.topic-issue {
  color: #1f6feb;
  font-size: 12px;
  line-height: 1.6;
}

.topic-name {
  margin-top: 4px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
}

.topic-intro-text p {
  margin-top: 10px;
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

.topic-note {
  padding: 10px 12px;
  border-left: 3px solid #1f6feb;
  border-radius: 0 6px 6px 0;
  background: #eef4ff;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.7;
}

.topic-intro-media {
  margin: 0;
  min-width: 0;
}

.topic-intro-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

/* 片单有序条目 */
.film-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: film;
}

.film-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease;
}

.film-item:hover {
  border-color: #1f6feb;
}

.film-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #eef4ff;
  color: #1f6feb;
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

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

.film-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.film-desc {
  margin-top: 4px;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.7;
}

.film-link-note {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

.film-chip {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #f6f7f9;
  border: 1px solid #e4e7eb;
  color: #5d6570;
  font-size: 12px;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}

/* 往期策展 */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.archive-card {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  transition: border-color 0.15s ease;
}

.archive-card:hover {
  border-color: #1f6feb;
}

.archive-issue {
  color: #1f6feb;
  font-size: 12px;
  line-height: 1.6;
}

.archive-name {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.archive-name a {
  color: #1a1d21;
}

.archive-name a:hover {
  color: #1f6feb;
}

.archive-desc {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* 延伸术语与相关频道 */
.extend-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.extend-cell {
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
}

.extend-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.extend-title a {
  color: #1a1d21;
}

.extend-title a:hover {
  color: #1f6feb;
}

.extend-cell p {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* 关于本期策展 */
.topic-about-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-about-list li {
  position: relative;
  padding-left: 16px;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.75;
}

.topic-about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1f6feb;
}

.topic-about-more {
  margin-top: 12px;
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages：术语索引
   -------------------------------------------------------------------------- */
.glossary-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding-bottom: 24px;
}

.glossary-intro-text {
  min-width: 0;
}

.glossary-intro-text h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.glossary-intro-text > p {
  margin-top: 10px;
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

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

.glossary-rules li {
  position: relative;
  padding-left: 16px;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.7;
}

.glossary-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1f6feb;
}

.glossary-intro-figure {
  margin: 0;
  min-width: 0;
}

.glossary-intro-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

/* 首字索引条 */
.glossary-index {
  padding: 14px 0;
  border-top: 1px solid #e4e7eb;
  border-bottom: 1px solid #e4e7eb;
}

.glossary-index-label {
  margin-bottom: 8px;
  color: #5d6570;
  font-size: 12px;
  line-height: 1.6;
}

.glossary-index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.glossary-index-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid #e4e7eb;
  border-radius: 6px;
  background: #ffffff;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.glossary-index-link:hover {
  border-color: #1f6feb;
  color: #1f6feb;
  background: #eef4ff;
  text-decoration: none;
}

/* 术语条目网格 */
.glossary-entries {
  padding-top: 24px;
}

.glossary-entries h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.glossary-item {
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  min-width: 0;
  transition: border-color 0.15s ease;
}

.glossary-item:hover {
  border-color: #1f6feb;
}

.glossary-term {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.glossary-def {
  margin-top: 6px;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.7;
}

.glossary-boundary {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #e4e7eb;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* 易混术语对照 */
.glossary-compare {
  padding-top: 32px;
}

.glossary-compare h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.compare-table {
  margin-top: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
}

.compare-row {
  display: grid;
  grid-template-columns: 180px 180px minmax(0, 1fr);
  gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid #e4e7eb;
}

.compare-row:last-child {
  border-bottom: 0;
}

.compare-head {
  background: #f6f7f9;
}

.compare-cell {
  min-width: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #1a1d21;
}

.compare-head .compare-cell {
  font-size: 13px;
  font-weight: 700;
  color: #5d6570;
}

.compare-row:not(.compare-head):hover {
  background: #f6f7f9;
}

/* 常见误区 */
.glossary-misread {
  padding-top: 32px;
}

.glossary-misread h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.misread-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.misread-item {
  padding: 12px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  font-size: 14px;
  line-height: 1.7;
}

.misread-wrong {
  color: #1a1d21;
}

.misread-wrong::before {
  content: "误区 · ";
  color: #d6478f;
  font-weight: 700;
}

.misread-right {
  margin-top: 4px;
  color: #5d6570;
}

.misread-right::before {
  content: "反例 · ";
  color: #17a673;
  font-weight: 700;
}

/* 术语页下一步 */
.glossary-next {
  margin-top: 32px;
  padding: 20px;
  border-radius: 8px;
  background: #f6f7f9;
}

.glossary-next h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.glossary-next-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.glossary-next-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  transition: border-color 0.15s ease;
}

.glossary-next-card:hover {
  border-color: #1f6feb;
  text-decoration: none;
}

.glossary-next-title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.glossary-next-desc {
  display: block;
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   pages：播放说明
   -------------------------------------------------------------------------- */
.playback .prep-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.prep-item {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  min-width: 0;
}

.prep-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-bottom: 8px;
  border-radius: 50%;
  background: #eef4ff;
  color: #1f6feb;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.prep-item .prep-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.prep-desc {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

/* 四步自查 */
.check-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 16px;
  align-items: start;
}

.check-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.check-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
}

.check-step .prep-num {
  margin-bottom: 0;
}

.check-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.check-desc {
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

.check-media {
  margin: 0;
  min-width: 0;
}

.check-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

/* 清晰度与字幕 */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.quality-block {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  min-width: 0;
}

.quality-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.quality-list {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quality-list li {
  position: relative;
  padding-left: 14px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

.quality-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #1f6feb;
}

/* 分享说明 */
.share-section {
  margin-top: 32px;
}

.share-note {
  margin-top: 12px;
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #f6f7f9;
}

.share-note p {
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.75;
}

.share-note .share-btn {
  margin-top: 12px;
}

/* 相关入口 */
.related-section {
  margin-top: 32px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.related-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.related-card:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
  text-decoration: none;
}

.related-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.related-desc {
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   pages：常见疑问
   -------------------------------------------------------------------------- */
.faq-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding-bottom: 24px;
}

.faq-intro-text {
  min-width: 0;
}

.faq-intro-text .section-title {
  font-size: 20px;
}

.faq-intro-text p {
  margin-top: 10px;
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

.faq-intro-tip {
  padding: 10px 12px;
  border-left: 3px solid #1f6feb;
  border-radius: 0 6px 6px 0;
  background: #eef4ff;
  font-size: 14px;
  line-height: 1.7;
}

.faq-intro-media {
  margin: 0;
  min-width: 0;
}

.faq-intro-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

.faq-group {
  padding-top: 24px;
}

.faq-group .section-title {
  font-size: 20px;
}

.faq-item {
  margin-top: 10px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
}

.faq-item summary {
  position: relative;
  padding: 12px 16px 12px 40px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: #1a1d21;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::before {
  content: "+";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  text-align: center;
  color: #1f6feb;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

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

.faq-item summary:hover {
  color: #1f6feb;
}

.faq-answer {
  padding: 0 16px 14px 40px;
  border-top: 1px solid #eef0f3;
}

.faq-answer p {
  margin-top: 10px;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.75;
}

.faq-next {
  margin-top: 32px;
  padding: 20px;
  border-radius: 8px;
  background: #f6f7f9;
}

.faq-next-text {
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

.faq-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

.faq-next-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid #e4e7eb;
  border-radius: 6px;
  background: #ffffff;
  color: #1a1d21;
  font-size: 14px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.faq-next-link:hover {
  border-color: #1f6feb;
  color: #1f6feb;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages：关于本站
   -------------------------------------------------------------------------- */
.about-position-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.about-position-text {
  min-width: 0;
}

.about-position-text .section-title {
  font-size: 20px;
}

.about-position-text p {
  margin-top: 10px;
  color: #1a1d21;
  font-size: 15px;
  line-height: 1.75;
}

.about-position-figure {
  margin: 0;
  min-width: 0;
}

.about-position-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

/* 工作方式 */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.workflow-step {
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  min-width: 0;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-bottom: 8px;
  border-radius: 50%;
  background: #eef4ff;
  color: #1f6feb;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.step-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.step-desc {
  margin-top: 6px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.7;
}

/* 编辑原则 */
.principle-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: principle;
}

.principle-item {
  position: relative;
  padding: 12px 16px 12px 44px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  counter-increment: principle;
}

.principle-item::before {
  content: counter(principle);
  position: absolute;
  left: 14px;
  top: 13px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #eef4ff;
  color: #1f6feb;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.principle-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.principle-item p {
  margin-top: 4px;
  color: #5d6570;
  font-size: 14px;
  line-height: 1.7;
}

/* 边界清单 */
.boundary-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.boundary-list li {
  position: relative;
  padding-left: 18px;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.75;
}

.boundary-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: #1f6feb;
}

/* 下一步入口 */
.next-entries {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.next-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "title arrow"
    "desc arrow";
  align-items: center;
  column-gap: 12px;
  padding: 16px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.next-entry:hover {
  border-color: #1f6feb;
  transform: translateY(-1px);
  text-decoration: none;
}

.next-entry-title {
  grid-area: title;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.next-entry-desc {
  grid-area: desc;
  margin-top: 4px;
  color: #5d6570;
  font-size: 13px;
  line-height: 1.65;
}

.next-entry-arrow {
  grid-area: arrow;
  color: #b6bcc5;
  font-size: 16px;
}

.next-entry:hover .next-entry-arrow {
  color: #1f6feb;
}

/* 相关内容链接条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 8px 0 32px;
  padding: 14px 0;
  border-top: 1px solid #e4e7eb;
  border-bottom: 1px solid #e4e7eb;
}

.related-links-label {
  color: #8a929c;
  font-size: 12px;
}

.related-links-item {
  color: #1f6feb;
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.site-error {
  background: #ffffff;
}

.error-main {
  padding-top: 48px;
  padding-bottom: 48px;
}

.error-intro {
  max-width: 640px;
}

.error-code {
  color: #1f6feb;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.6;
}

.error-intro h1 {
  margin-top: 6px;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
}

.error-text {
  margin-top: 12px;
  color: #5d6570;
  font-size: 15px;
  line-height: 1.75;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.error-home-link,
.error-sub-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-size: 15px;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.error-home-link {
  background: #1f6feb;
  border-color: #1f6feb;
  color: #ffffff;
}

.error-home-link:hover {
  background: #1a5fd0;
  border-color: #1a5fd0;
  text-decoration: none;
}

.error-sub-link {
  background: #ffffff;
  border-color: #e4e7eb;
  color: #1a1d21;
}

.error-sub-link:hover {
  border-color: #1f6feb;
  color: #1f6feb;
  text-decoration: none;
}

.error-routes {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid #e4e7eb;
}

.error-routes h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.error-route-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.error-route-list li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #1a1d21;
  font-size: 14px;
  line-height: 1.5;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.error-route-list li a:hover {
  border-color: #1f6feb;
  color: #1f6feb;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1120px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 24px;
  }

  .channel-item {
    grid-template-columns: 150px minmax(0, 1fr);
  }

  .map-row {
    grid-template-columns: 150px 140px minmax(0, 1fr);
  }

  .compare-row {
    grid-template-columns: 150px 150px minmax(0, 1fr);
  }
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .layout-side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .layout-side .side-block {
    margin-bottom: 0;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .hero-figure {
    order: 2;
  }

  .dimension-grid,
  .channel-strip-grid,
  .prep-summary .prep-grid,
  .bridge-grid,
  .extend-grid,
  .related-grid,
  .workflow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .curation-feature {
    grid-template-columns: minmax(0, 1fr);
  }

  .basis-grid,
  .topic-intro,
  .glossary-intro,
  .faq-intro,
  .about-position-grid,
  .check-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .channel-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .channel-id .channel-dot {
    margin-top: 6px;
  }

  .map-row,
  .compare-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .map-head,
  .compare-head {
    display: none;
  }

  .map-row .map-cell:first-child,
  .compare-row .compare-cell:first-child {
    font-weight: 700;
  }

  .error-route-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .header-inner {
    gap: 12px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 8px 20px 12px;
    background: #ffffff;
    border-bottom: 1px solid #e4e7eb;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .nav-list li {
    border-bottom: 1px solid #eef0f3;
  }

  .nav-list li:last-child {
    border-bottom: 0;
  }

  .nav-link {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 48px;
    padding: 0 0 0 11px;
    border-bottom: 0;
    border-left: 3px solid transparent;
    font-size: 15px;
  }

  .nav-link:hover {
    border-bottom-color: transparent;
    border-left-color: #1f6feb;
  }

  .nav-link.is-current {
    border-bottom-color: transparent;
    border-left-color: #1f6feb;
  }

  .header-actions {
    margin-left: auto;
  }

  .share-btn {
    min-height: 44px;
  }

  .hero {
    padding: 24px 0;
  }

  .hero-copy h1 {
    font-size: 24px;
  }

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

  .page-header {
    padding: 12px 0 20px;
  }

  .dimension-grid,
  .curation-list,
  .channel-strip-grid,
  .prep-summary .prep-grid,
  .bridge-grid,
  .archive-grid,
  .extend-grid,
  .related-grid,
  .workflow-steps,
  .next-entries,
  .quality-grid,
  .glossary-grid,
  .glossary-next-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .layout-side {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-head,
  .page-title-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .arrival-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 10px;
  }

  .arrival-thumb {
    width: 56px;
    height: 36px;
  }

  .arrival-link {
    grid-column: 2;
    justify-self: start;
    min-height: 32px;
    display: inline-flex;
    align-items: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .footer-nav {
    gap: 0 16px;
  }

  .footer-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .film-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
    padding: 12px 14px;
  }

  .film-index {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

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

  .error-route-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .shell {
    padding: 0 16px;
  }

  .hero-copy h1 {
    font-size: 22px;
  }

  .page-title {
    font-size: 20px;
  }

  .section-title,
  .glossary-entries h2,
  .glossary-compare h2,
  .glossary-misread h2,
  .faq-group .section-title,
  .about-position-text .section-title,
  .glossary-intro-text h2 {
    font-size: 18px;
  }

  .topic-name {
    font-size: 19px;
  }

  .curation-name {
    font-size: 16px;
  }

  .body,
  body {
    font-size: 14px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .error-intro h1 {
    font-size: 22px;
  }

  .error-actions a {
    flex: 1 1 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}