:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #e4e7ec;
  --primary: #d92d20;
  --primary-dark: #b42318;
  --accent: #0b6bcb;
  --shadow: 0 12px 30px rgba(16, 24, 40, .08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.wrap {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr minmax(240px, 340px);
  align-items: center;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.main-nav a {
  padding: 8px 12px;
  border-radius: 6px;
  color: #344054;
  font-weight: 600;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: #fff1f0;
  color: var(--primary-dark);
}

.search-form {
  display: flex;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.search-form input {
  min-width: 0;
  flex: 1;
  border: 0;
  padding: 10px 12px;
  font: inherit;
  outline: none;
}

.search-form button,
.btn {
  border: 0;
  background: #eef2f6;
  color: #182230;
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.btn.primary,
.search-form button {
  background: var(--primary);
  color: #fff;
}

.btn.primary:hover,
.search-form button:hover {
  background: var(--primary-dark);
}

.hero {
  padding: 28px 0 10px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
}

.hero-card,
.rank-panel,
.video-card,
.channel-grid a,
.news-list article,
.play-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-card {
  overflow: hidden;
}

.hero-media {
  display: block;
  background: #101828;
}

.hero-content {
  padding: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
}

h2 {
  font-size: 24px;
  line-height: 1.25;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.rank-panel {
  padding: 20px;
}

.rank-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 24px;
}

.rank-list li {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.rank-list a {
  display: block;
  font-weight: 800;
}

.rank-list span,
.video-card p,
.page-desc,
.meta {
  color: var(--muted);
}

.section-block {
  padding: 30px 0;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-head h2 {
  margin: 0;
}

.section-head a {
  color: var(--accent);
  font-weight: 700;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.video-card {
  overflow: hidden;
}

.video-card h2,
.video-card h3,
.video-card p {
  margin-left: 14px;
  margin-right: 14px;
}

.video-card h2,
.video-card h3 {
  margin-top: 12px;
  margin-bottom: 4px;
  font-size: 17px;
  line-height: 1.35;
}

.poster {
  display: block;
  aspect-ratio: 5 / 7;
  background: #d0d5dd;
  overflow: hidden;
}

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

.channel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.channel-grid a {
  padding: 18px;
}

.channel-grid strong,
.channel-grid span {
  display: block;
}

.channel-grid span {
  margin-top: 6px;
  color: var(--muted);
}

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

.news-list article {
  padding: 18px;
}

.site-footer {
  margin-top: 30px;
  padding: 26px 0;
  color: #d0d5dd;
  background: #111827;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-main {
  padding-top: 22px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

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

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 22px;
}

.filter-row a {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}

.filter-row a[aria-current="page"] {
  border-color: var(--primary);
  color: var(--primary);
}

.detail-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  padding: 24px;
  margin-top: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.detail-poster {
  width: 100%;
  border-radius: 8px;
  background: #d0d5dd;
}

.play-box {
  padding: 24px;
}

.play-box iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 8px;
  background: #000;
}

@media (max-width: 900px) {
  .header-inner,
  .hero-grid,
  .detail-layout {
    grid-template-columns: 1fr;
  }

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

  .news-list,
  .footer-grid {
    grid-template-columns: 1fr;
    display: grid;
  }
}

@media (max-width: 560px) {
  .wrap {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    position: static;
  }

  .main-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .main-nav a {
    white-space: nowrap;
  }

  .video-grid,
  .channel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .hero-content {
    padding: 18px;
  }

  .video-card h2,
  .video-card h3 {
    font-size: 15px;
  }
}