/* ============================================================
   糖心传媒 · 全站样式表
   视觉方向：内容议程 / 晚间影展 / 节目单质感
   配色：深墨蓝 #0f2337 · 纸白 #f5f2ec · 朱红 #d84a2a
         青碧 #2f7c6b · 鎏金 #e5b53c · 纯白 #ffffff
   ============================================================ */

/* ============================================================
   1. Base —— 重置、字体、色彩变量、基础元素
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #2b2b2b;
  background-color: #f5f2ec;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #0f2337;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #d84a2a;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.35;
  color: #0f2337;
}

h1 {
  font-size: 32px;
  font-weight: 900;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 0.5em;
}

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

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

input[type="range"],
input[type="number"] {
  font-family: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   2. Layout —— 全站骨架、容器、页头、页脚
   ============================================================ */
.site-header {
  background-color: #0f2337;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(15, 35, 55, 0.18);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand-name::after {
  content: "·视频导航";
  font-size: 13px;
  font-weight: 400;
  color: #e5b53c;
  margin-left: 8px;
  letter-spacing: 0.08em;
}

.site-nav {
  flex-shrink: 0;
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
  border-radius: 4px;
  line-height: 1.5;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-list li a.is-current {
  color: #ffffff;
  background-color: rgba(216, 74, 42, 0.85);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  color: #ffffff;
  font-size: 14px;
}

.nav-toggle-icon {
  display: block;
  width: 18px;
  height: 2px;
  background-color: #ffffff;
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: #ffffff;
}

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

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

.nav-toggle-text {
  font-weight: 700;
}

.site-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-footer {
  background-color: #0f2337;
  margin-top: 80px;
  padding: 56px 0 32px;
}

.footer-columns {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-col h2,
.footer-col h3 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
}

.footer-nav ul,
.footer-help ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav ul a,
.footer-help ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.2s ease;
}

.footer-nav ul a:hover,
.footer-help ul a:hover {
  color: #e5b53c;
}

.footer-boundary p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
}

.copyright {
  max-width: 1200px;
  margin: 40px auto 0;
  padding: 20px 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

/* ============================================================
   3. Components —— 按钮、面包屑、卡片、FAQ、时间轴等通用组件
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  line-height: 1.5;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background-color: #d84a2a;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #c03e1f;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(216, 74, 42, 0.3);
}

.btn-secondary {
  background-color: #f5f2ec;
  color: #0f2337;
  border: 1px solid #d8d2c6;
}

.btn-secondary:hover {
  background-color: #ffffff;
  color: #d84a2a;
  border-color: #d84a2a;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 20px 0 0;
  font-size: 14px;
  color: #7a7468;
}

.breadcrumb a {
  color: #7a7468;
}

.breadcrumb a:hover {
  color: #d84a2a;
}

.breadcrumb-sep {
  color: #b5aea0;
  font-size: 12px;
}

.breadcrumb-current {
  color: #0f2337;
  font-weight: 600;
}

.page-header {
  padding: 28px 0 32px;
  border-bottom: 1px solid #e0dbd0;
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #5c574d;
  max-width: 720px;
  line-height: 1.75;
}

.section-intro {
  font-size: 15px;
  color: #5c574d;
  margin-bottom: 28px;
  max-width: 680px;
}

.section-title {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: #d84a2a;
  border-radius: 2px;
}

/* 面包屑与页头区域：内页统一视觉骨架 */
.inner-main {
  background-color: #f5f2ec;
}

/* FAQ 折叠 */
.faq-section {
  margin-top: 64px;
}

.faq-item {
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  background-color: #ffffff;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 700;
  color: #0f2337;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background-color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #d84a2a;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary {
  background-color: #faf8f3;
}

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

.faq-item summary:hover {
  background-color: #faf8f3;
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: #4a463e;
  line-height: 1.75;
}

/* 相关链接条（首页 / 内页通用） */
.related-links {
  margin-top: 64px;
  padding: 24px 0;
  border-top: 1px solid #e0dbd0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: #7a7468;
  margin-right: 8px;
}

.related-links-item {
  font-size: 14px;
  color: #0f2337;
  padding: 6px 14px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  border-color: #d84a2a;
  color: #d84a2a;
}

/* ============================================================
   4. Pages —— 首页
   ============================================================ */
.home-main {
  padding-bottom: 40px;
}

/* 4.1 首屏焦点区 */
.hero-focus {
  background-color: #0f2337;
  margin: 0 -24px;
  padding: 64px 24px 56px;
  position: relative;
  overflow: hidden;
}

.hero-focus::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background-color: rgba(216, 74, 42, 0.08);
}

.hero-copy {
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.hero-copy h1 {
  color: #ffffff;
  font-size: 40px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-slogan {
  color: #e5b53c;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.hero-lead {
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 560px;
}

.hero-copy .btn-primary {
  margin-bottom: 8px;
}

.hero-channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
  position: relative;
  z-index: 1;
}

.channel-card {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.channel-card:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #d84a2a;
  transform: translateY(-2px);
}

.channel-icon {
  font-size: 24px;
  margin-bottom: 4px;
}

.channel-title {
  color: #ffffff;
  font-size: 17px;
  font-weight: 700;
}

.channel-desc {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  line-height: 1.6;
}

/* 4.2 当前焦点 */
.current-focus {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  background-color: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(15, 35, 55, 0.06);
}

.focus-media {
  min-height: 320px;
}

.focus-media img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.focus-content {
  padding: 40px 40px 40px 0;
}

.focus-tag {
  display: inline-block;
  padding: 4px 14px;
  background-color: #d84a2a;
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 3px;
  margin-bottom: 16px;
}

.focus-content h2 {
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 16px;
}

.focus-content p {
  color: #4a463e;
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.focus-content .btn-secondary {
  margin-bottom: 24px;
}

.focus-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.focus-tags li {
  padding: 4px 12px;
  background-color: #f5f2ec;
  border-radius: 3px;
  font-size: 13px;
  color: #5c574d;
}

/* 4.3 导航时间轴 */
.nav-timeline {
  margin-top: 72px;
}

.nav-timeline h2,
.channel-tags h2,
.latest-preview h2,
.watch-prep h2,
.faq-section h2 {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 12px;
}

.nav-timeline .section-intro,
.channel-tags .section-intro,
.latest-preview .section-intro {
  color: #5c574d;
  font-size: 15px;
  max-width: 640px;
  margin-bottom: 36px;
}

.timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: #e0dbd0;
}

.timeline-item {
  position: relative;
  padding: 0 0 32px 56px;
}

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

.step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #0f2337;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  font-variant-numeric: tabular-nums;
}

.step-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-body p {
  color: #5c574d;
  font-size: 15px;
  margin-bottom: 8px;
  max-width: 560px;
}

.step-body a {
  font-size: 14px;
  font-weight: 700;
  color: #d84a2a;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.step-body a::after {
  content: "→";
  font-size: 14px;
}

/* 4.4 频道标签带 */
.channel-tags {
  margin-top: 72px;
}

.tags-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.tag-item::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tag-item:hover {
  border-color: #d84a2a;
  transform: translateY(-1px);
}

.tag-drama::before { background-color: #d84a2a; }
.tag-doc::before { background-color: #2f7c6b; }
.tag-life::before { background-color: #e5b53c; }
.tag-talk::before { background-color: #7a7468; }
.tag-tech::before { background-color: #3a6ea5; }
.tag-culture::before { background-color: #8a5a44; }

/* 4.5 最新发布预览 */
.latest-preview {
  margin-top: 72px;
}

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

.video-card {
  background-color: #ffffff;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(15, 35, 55, 0.05);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}

.video-card:hover {
  box-shadow: 0 6px 24px rgba(15, 35, 55, 0.1);
  transform: translateY(-3px);
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.card-category {
  display: inline-block;
  margin: 16px 20px 0;
  padding: 3px 10px;
  background-color: #f5f2ec;
  color: #5c574d;
  font-size: 12px;
  font-weight: 600;
  border-radius: 3px;
  align-self: flex-start;
}

.video-card h3 {
  font-size: 17px;
  font-weight: 700;
  padding: 10px 20px 0;
  line-height: 1.5;
}

.video-card p {
  font-size: 14px;
  color: #5c574d;
  padding: 8px 20px 0;
  line-height: 1.6;
  flex: 1;
}

.video-card a {
  display: block;
  padding: 12px 20px 16px;
  font-size: 14px;
  font-weight: 700;
  color: #d84a2a;
}

/* 4.6 观看准备 CTA */
.watch-prep {
  margin-top: 72px;
  background-color: #0f2337;
  border-radius: 8px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}

.watch-prep h2 {
  color: #ffffff;
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 24px;
}

.prep-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.prep-list li {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  padding-left: 28px;
  position: relative;
}

.prep-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #e5b53c;
  font-weight: 700;
}

.prep-action {
  display: flex;
  justify-content: flex-end;
}

/* 4.7 首页 FAQ */
.home-main .faq-section {
  margin-top: 72px;
}

/* ============================================================
   5. Pages —— 频道导览 pindao.html
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

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

.channel-table-section {
  margin-bottom: 56px;
}

.channel-table-section h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.channel-table-section p {
  color: #5c574d;
  font-size: 15px;
  margin-bottom: 24px;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  background-color: #ffffff;
}

.channel-table {
  width: 100%;
  font-size: 14px;
  min-width: 560px;
}

.channel-table thead th {
  background-color: #0f2337;
  color: #ffffff;
  font-weight: 700;
  padding: 14px 16px;
  text-align: left;
  white-space: nowrap;
}

.channel-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid #eee9e0;
  color: #3a362f;
  line-height: 1.6;
  vertical-align: top;
}

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

.channel-table tbody tr:hover td {
  background-color: #faf8f3;
}

.channel-grid-section h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.channel-grid-section > p {
  color: #5c574d;
  font-size: 15px;
  margin-bottom: 24px;
}

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

.channel-grid .channel-card {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.channel-grid .channel-card:hover {
  box-shadow: 0 4px 16px rgba(15, 35, 55, 0.08);
  transform: translateY(-2px);
}

.channel-figure {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.channel-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-card-body {
  padding: 20px;
}

.channel-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.channel-card-body p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 12px;
}

.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.scene-tags li {
  padding: 3px 10px;
  background-color: #f5f2ec;
  border-radius: 3px;
  font-size: 12px;
  color: #5c574d;
}

/* 右侧栏 */
.page-aside {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 28px 24px;
}

.page-aside h2 {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 8px;
}

.page-aside > p {
  font-size: 14px;
  color: #5c574d;
  margin-bottom: 24px;
}

.aside-block {
  padding: 16px 0;
  border-top: 1px solid #eee9e0;
}

.aside-block h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.aside-block p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 8px;
}

.aside-block a {
  font-size: 14px;
  color: #d84a2a;
  font-weight: 700;
}

/* 相关入口 */
.related-entry {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid #e0dbd0;
}

.related-entry h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.related-entry > p {
  color: #5c574d;
  font-size: 15px;
  margin-bottom: 24px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links a {
  padding: 10px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links a:hover {
  border-color: #d84a2a;
  color: #d84a2a;
}

/* ============================================================
   6. Pages —— 主题片单 zhuanti.html
   ============================================================ */
.playlist-filter {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 28px 32px;
  margin-bottom: 48px;
}

.playlist-filter h2 {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 20px;
}

.filter-controls {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 15px;
  font-weight: 700;
  color: #0f2337;
  flex-shrink: 0;
}

.filter-inputs {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  min-width: 280px;
}

.range-slider {
  flex: 1;
  accent-color: #d84a2a;
  height: 4px;
  cursor: pointer;
}

.range-number {
  width: 72px;
  padding: 8px 12px;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 700;
  color: #0f2337;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.range-number:focus {
  outline: 2px solid #d84a2a;
  border-color: #d84a2a;
}

.filter-hint {
  width: 100%;
  font-size: 13px;
  color: #7a7468;
  margin-top: 12px;
}

.playlist-grid-section h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 24px;
}

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

.playlist-card {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.playlist-card:hover {
  box-shadow: 0 4px 16px rgba(15, 35, 55, 0.08);
  transform: translateY(-2px);
}

.playlist-cover {
  aspect-ratio: 16 / 8;
  overflow: hidden;
}

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

.playlist-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.playlist-number {
  font-size: 12px;
  font-weight: 700;
  color: #d84a2a;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}

.playlist-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.playlist-desc {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}

.playlist-tags {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.playlist-tags .tag {
  padding: 3px 10px;
  background-color: #f5f2ec;
  border-radius: 3px;
  font-size: 12px;
  color: #5c574d;
}

.playlist-meta {
  font-size: 13px;
  color: #7a7468;
  margin-bottom: 12px;
}

.playlist-info a {
  font-size: 14px;
  font-weight: 700;
  color: #d84a2a;
}

/* 片单构成说明 */
.playlist-composition {
  margin-top: 56px;
  padding: 40px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
}

.playlist-composition h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.composition-intro {
  font-size: 15px;
  color: #5c574d;
  margin-bottom: 28px;
  max-width: 640px;
}

.composition-rules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rule-item {
  padding: 20px;
  background-color: #faf8f3;
  border-radius: 6px;
}

.rule-item h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0f2337;
}

.rule-item p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 0;
}

/* 片单页 FAQ 与相关入口 */
.zhuanti-faq {
  margin-top: 56px;
}

.zhuanti-related {
  margin-top: 48px;
}

.zhuanti-related h2 {
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 16px;
}

.zhuanti-related ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.zhuanti-related ul li a {
  display: inline-block;
  padding: 10px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
}

.zhuanti-related ul li a:hover {
  border-color: #d84a2a;
  color: #d84a2a;
}

/* ============================================================
   7. Pages —— 最新发布 zuixin.html
   ============================================================ */
.layout-shell {
  display: grid;
  gap: 48px;
}

.timeline-layout {
  grid-template-columns: 320px 1fr;
  align-items: start;
}

.timeline-column {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 28px 24px;
}

.timeline-column .section-title {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 20px;
}

.timeline-column .timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-column .timeline-list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: #e0dbd0;
}

.timeline-column .timeline-item {
  position: relative;
  padding: 0 0 24px 32px;
}

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

.timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 2px solid #b5aea0;
  z-index: 1;
}

.timeline-item.is-current .timeline-dot {
  border-color: #d84a2a;
  background-color: #d84a2a;
  box-shadow: 0 0 0 4px rgba(216, 74, 42, 0.15);
}

.timeline-batch {
  font-size: 14px;
  font-weight: 700;
  color: #0f2337;
  margin-bottom: 4px;
}

.timeline-topic {
  font-size: 13px;
  color: #5c574d;
  line-height: 1.6;
  margin-bottom: 4px;
}

.timeline-meta {
  font-size: 12px;
  color: #7a7468;
  font-variant-numeric: tabular-nums;
}

.timeline-item.is-current .timeline-batch {
  color: #d84a2a;
}

.batch-detail-column {
  min-width: 0;
}

.batch-detail-column .section-title {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 20px;
}

.batch-card {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
}

.batch-media {
  position: relative;
}

.media-figure {
  position: relative;
  aspect-ratio: 16 / 7;
  overflow: hidden;
}

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

.media-figure figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 4px 12px;
  background-color: rgba(15, 35, 55, 0.82);
  color: #ffffff;
  font-size: 13px;
  border-radius: 3px;
}

.batch-content {
  padding: 24px;
}

.batch-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
}

.batch-content p {
  font-size: 15px;
  color: #4a463e;
  line-height: 1.8;
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-list li {
  padding: 4px 12px;
  background-color: #f5f2ec;
  border-radius: 3px;
  font-size: 13px;
  color: #5c574d;
}

.text-link {
  font-size: 14px;
  font-weight: 700;
  color: #d84a2a;
}

.batch-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.preview-item {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  overflow: hidden;
}

.preview-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.preview-item figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #5c574d;
  line-height: 1.6;
}

/* 归档入口 */
.archive-section {
  margin-top: 48px;
}

.archive-section .section-title {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.archive-intro {
  font-size: 15px;
  color: #5c574d;
  margin-bottom: 24px;
}

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

.archive-card {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.archive-card:hover {
  border-color: #d84a2a;
  transform: translateY(-2px);
}

.archive-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.archive-card p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============================================================
   8. Pages —— 观看指南 zhinan.html
   ============================================================ */
.sidebar-left {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}

.stage-anchor {
  position: sticky;
  top: 96px;
}

.anchor-inner {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 24px 20px;
}

.anchor-title {
  font-size: 16px;
  font-weight: 900;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #eee9e0;
}

.anchor-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.anchor-list li a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: #4a463e;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.anchor-list li a:hover {
  background-color: #faf8f3;
  color: #d84a2a;
}

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

.guide-section {
  margin-bottom: 56px;
}

.guide-section .section-title {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.section-lead {
  font-size: 15px;
  color: #5c574d;
  margin-bottom: 24px;
  max-width: 640px;
}

/* 学习目标 */
.goal-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.goal-list li {
  padding: 16px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-left: 4px solid #2f7c6b;
  border-radius: 4px;
  font-size: 15px;
  line-height: 1.7;
  color: #3a362f;
}

/* 准备条件 */
.sub-title {
  font-size: 16px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: #0f2337;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 8px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 15px;
  color: #3a362f;
  line-height: 1.6;
}

.check-box {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 2px solid #b5aea0;
  border-radius: 3px;
  margin-top: 3px;
  position: relative;
}

.check-list li.checked .check-box {
  border-color: #2f7c6b;
  background-color: #2f7c6b;
}

.check-list li.checked .check-box::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
}

/* 操作步骤 */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-item {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 24px;
  align-items: center;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 20px;
}

.step-text h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-text p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 0;
}

.step-figure {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 4px;
}

.step-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 完成检查 */
.final-check li {
  cursor: pointer;
}

.check-hint {
  margin-top: 16px;
  padding: 12px 20px;
  background-color: #e8f0ed;
  border-radius: 4px;
  font-size: 14px;
  color: #2f7c6b;
  font-weight: 600;
  display: none;
}

.check-hint.visible {
  display: block;
}

/* 指南 FAQ */
.guide-content .faq-section {
  margin-top: 40px;
}

.guide-content .faq-section .section-title {
  margin-bottom: 20px;
}

/* 相关专题入口 */
.related-entry .entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.entry-link {
  padding: 10px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.entry-link:hover {
  border-color: #d84a2a;
  color: #d84a2a;
}

/* ============================================================
   9. Pages —— 反馈说明 fankui.html
   ============================================================ */
.issue-categories {
  margin-bottom: 56px;
}

.issue-categories h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.issue-categories .section-intro {
  margin-bottom: 24px;
}

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

.category-card {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.category-card:hover {
  border-color: #d84a2a;
  transform: translateY(-2px);
}

.category-icon {
  margin-bottom: 16px;
}

.icon-figure {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: #f5f2ec;
  border-radius: 6px;
  font-size: 20px;
}

.category-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}

.category-card a {
  font-size: 14px;
  font-weight: 700;
  color: #d84a2a;
}

/* 描述模板 */
.report-template {
  margin-bottom: 56px;
}

.report-template h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.report-template .section-intro {
  margin-bottom: 24px;
}

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

.template-blank,
.template-example {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 24px;
}

.template-blank h3,
.template-example h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #eee9e0;
}

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

.template-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background-color: #faf8f3;
  border-radius: 4px;
  font-size: 14px;
  color: #5c574d;
}

.template-label {
  font-weight: 700;
  color: #0f2337;
  flex-shrink: 0;
}

.example-text {
  font-size: 14px;
  color: #4a463e;
  line-height: 1.9;
  background-color: #faf8f3;
  border-radius: 4px;
  padding: 16px;
}

.example-text strong {
  color: #0f2337;
}

/* 处理流程 */
.process-steps {
  margin-bottom: 56px;
}

.process-steps h2 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.process-steps .section-intro {
  margin-bottom: 24px;
}

.process-figure {
  margin-bottom: 24px;
  border-radius: 6px;
  overflow: hidden;
}

.process-figure img {
  width: 100%;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

.process-figure figcaption {
  padding: 10px 16px;
  background-color: #ffffff;
  font-size: 13px;
  color: #7a7468;
  border: 1px solid #e0dbd0;
  border-top: none;
  border-radius: 0 0 6px 6px;
}

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

.process-list li {
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 6px;
  padding: 20px;
  position: relative;
}

.process-list li h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0f2337;
  padding-left: 28px;
  position: relative;
}

.process-list li h3::before {
  content: attr(data-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  background-color: #0f2337;
  color: #ffffff;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-variant-numeric: tabular-nums;
}

.process-list li p {
  font-size: 14px;
  color: #5c574d;
  line-height: 1.7;
  margin-bottom: 0;
}

/* 反馈页相关入口 */
.fankui-related {
  margin-top: 48px;
}

.related-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-link-row a {
  padding: 10px 20px;
  background-color: #ffffff;
  border: 1px solid #e0dbd0;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-link-row a:hover {
  border-color: #d84a2a;
  color: #d84a2a;
}

/* ============================================================
   10. Pages —— 404 页面
   ============================================================ */
.error-main {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

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

.error-code {
  font-size: 72px;
  font-weight: 900;
  color: #d84a2a;
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.error-content h1 {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: #5c574d;
  margin-bottom: 32px;
  line-height: 1.8;
}

.error-btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: #0f2337;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  margin-bottom: 32px;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: #d84a2a;
  color: #ffffff;
}

.error-links {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.error-links a {
  font-size: 14px;
  font-weight: 600;
  color: #0f2337;
  border-bottom: 1px solid #d8d2c6;
  padding-bottom: 2px;
}

.error-links a:hover {
  color: #d84a2a;
  border-color: #d84a2a;
}

/* ============================================================
   11. Responsive —— 响应式断点
   ============================================================ */
/* 平板与窄桌面 */
@media (max-width: 1024px) {
  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .page-layout {
    grid-template-columns: 1fr 280px;
    gap: 32px;
  }

  .timeline-layout {
    grid-template-columns: 260px 1fr;
    gap: 32px;
  }

  .sidebar-left {
    grid-template-columns: 220px 1fr;
    gap: 32px;
  }

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

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

/* 移动端 */
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
    padding: 0 16px;
  }

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

  .brand-name::after {
    font-size: 11px;
    margin-left: 6px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #0f2337;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 2px;
    box-shadow: 0 8px 20px rgba(15, 35, 55, 0.25);
  }

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

  .nav-list li a {
    padding: 12px 16px;
    font-size: 15px;
  }

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

  .hero-focus {
    margin: 0 -16px;
    padding: 48px 16px 40px;
  }

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

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

  .hero-lead {
    font-size: 15px;
  }

  .hero-channels {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 32px;
  }

  .channel-card {
    padding: 18px 16px;
  }

  .current-focus {
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 48px;
  }

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

  .focus-media img {
    min-height: 220px;
  }

  .focus-content {
    padding: 28px 24px;
  }

  .focus-content h2 {
    font-size: 22px;
  }

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

  .watch-prep {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 24px;
    margin-top: 48px;
  }

  .prep-action {
    justify-content: flex-start;
  }

  .timeline-list::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: 48px;
  }

  .step-num {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .nav-timeline,
  .channel-tags,
  .latest-preview,
  .home-main .faq-section {
    margin-top: 48px;
  }

  .nav-timeline h2,
  .channel-tags h2,
  .latest-preview h2,
  .watch-prep h2,
  .faq-section h2 {
    font-size: 24px;
  }

  /* 内页通用移动端调整 */
  .page-header {
    padding: 20px 0 24px;
    margin-bottom: 28px;
  }

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

  .page-description {
    font-size: 15px;
  }

  .breadcrumb {
    padding-top: 16px;
    font-size: 13px;
  }

  /* 频道导览 */
  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .page-aside {
    order: 2;
  }

  .table-scroll {
    overflow-x: auto;
  }

  .channel-table {
    min-width: 520px;
  }

  /* 主题片单 */
  .playlist-filter {
    padding: 20px;
  }

  .filter-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .filter-inputs {
    width: 100%;
    min-width: 0;
  }

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

  .composition-rules {
    grid-template-columns: 1fr;
  }

  .playlist-composition {
    padding: 24px 20px;
  }

  /* 最新发布 */
  .timeline-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .timeline-column {
    order: 2;
  }

  .batch-detail-column {
    order: 1;
  }

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

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

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

  /* 观看指南 */
  .sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .stage-anchor {
    position: static;
    order: 2;
  }

  .anchor-inner {
    padding: 16px;
  }

  .anchor-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .anchor-list li a {
    padding: 6px 10px;
    font-size: 13px;
  }

  .guide-content {
    order: 1;
  }

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

  .step-figure {
    aspect-ratio: 16 / 7;
  }

  /* 反馈说明 */
  .category-grid {
    grid-template-columns: 1fr;
  }

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

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

  .process-figure img {
    aspect-ratio: 16 / 8;
  }

  /* 页脚 */
  .footer-columns {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 0 16px;
  }

  .site-footer {
    margin-top: 48px;
    padding: 40px 0 24px;
  }

  .copyright {
    padding: 16px 16px 0;
  }

  /* 404 */
  .error-main {
    padding: 48px 16px;
  }

  .error-code {
    font-size: 56px;
  }

  .error-links {
    flex-direction: column;
    gap: 12px;
  }
}

/* 小手机 */
@media (max-width: 390px) {
  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-lead {
    font-size: 14px;
  }

  .focus-content {
    padding: 24px 16px;
  }

  .watch-prep {
    padding: 24px 16px;
  }

  .prep-list li {
    font-size: 14px;
  }

  .related-links {
    gap: 8px;
  }

  .related-links-item {
    padding: 6px 10px;
    font-size: 13px;
  }
}

/* ============================================================
   12. Reveal 动效（增强，不影响初始可见性）
   ============================================================ */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.reveal.reveal-init {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal[data-reveal] {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  .reveal[data-reveal].reveal-visible {
    opacity: 1;
    transform: translateY(0);
  }
}