:root {
  --cyan: #0891b2;
  --cyan-dark: #0e7490;
  --blue: #2563eb;
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --radius: 18px;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--slate-800);
  background: linear-gradient(180deg, #ecfeff 0%, #ffffff 32%, #f8fafc 100%);
  line-height: 1.6;
}

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

img,
video {
  display: block;
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(203, 213, 225, 0.65);
}

.navbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--slate-800);
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  box-shadow: 0 12px 24px rgba(8, 145, 178, 0.25);
}

.logo-text {
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  color: var(--slate-700);
  font-weight: 650;
}

.nav-links a:hover,
.mobile-panel a:hover {
  color: var(--cyan);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 14px;
  color: var(--slate-700);
  background: var(--slate-100);
  cursor: pointer;
}

.mobile-panel {
  display: none;
  padding: 0 0 18px;
  color: var(--slate-700);
  font-weight: 650;
}

.mobile-panel a {
  display: block;
  padding: 10px 0;
}

.main-space {
  padding-top: 28px;
}

.hero-carousel {
  position: relative;
  height: 520px;
  overflow: hidden;
  border-radius: 28px;
  background: var(--slate-900);
  box-shadow: 0 28px 70px rgba(15, 23, 42, 0.25);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
}

.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(2, 6, 23, 0.92) 0%, rgba(15, 23, 42, 0.58) 50%, rgba(15, 23, 42, 0.12) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  max-width: 780px;
  padding: 52px;
  color: #fff;
}

.hero-badge,
.badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  padding: 5px 12px;
  border-radius: 999px;
  color: #fff;
  background: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}

.hero-content h1,
.hero-content h2 {
  margin: 16px 0 16px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.06em;
}

.hero-content p {
  margin: 0 0 24px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  max-width: 720px;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border: 0;
  border-radius: 13px;
  font-weight: 750;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--cyan);
  box-shadow: 0 14px 30px rgba(8, 145, 178, 0.25);
}

.btn-primary:hover {
  background: var(--cyan-dark);
}

.btn-light {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.32);
}

.hero-arrow {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: rgba(0, 0, 0, 0.46);
  cursor: pointer;
  transform: translateY(-50%);
}

.hero-arrow:hover {
  background: rgba(0, 0, 0, 0.7);
}

.hero-prev {
  left: 18px;
}

.hero-next {
  right: 18px;
}

.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 18px;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 8px;
  transform: translateX(-50%);
}

.hero-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: width 0.2s ease, background 0.2s ease;
}

.hero-dot.is-active {
  width: 34px;
  background: #fff;
}

.section {
  margin-top: 56px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-kicker {
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 13px;
}

.section-title {
  margin: 4px 0 0;
  color: var(--slate-800);
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.section-desc {
  margin: 8px 0 0;
  max-width: 720px;
  color: var(--slate-600);
}

.filters {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 12px;
  margin-bottom: 22px;
}

.search-input,
.filter-select {
  width: 100%;
  min-height: 46px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--slate-700);
  outline: 0;
}

.search-input {
  padding: 0 16px;
}

.filter-select {
  padding: 0 12px;
}

.search-input:focus,
.filter-select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.12);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.video-grid.compact {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.video-card {
  min-width: 0;
}

.video-card a {
  display: block;
  height: 100%;
  overflow: hidden;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.09);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.video-card a:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 42px rgba(15, 23, 42, 0.16);
}

.poster {
  position: relative;
  height: 230px;
  overflow: hidden;
  background: var(--slate-100);
}

.poster.tall {
  height: 310px;
}

.poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card a:hover .poster img {
  transform: scale(1.08);
}

.poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(2, 6, 23, 0.68) 0%, rgba(2, 6, 23, 0.05) 55%);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.video-card a:hover .poster::after {
  opacity: 1;
}

.play-mark {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #fff;
  background: rgba(8, 145, 178, 0.9);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.88);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.video-card a:hover .play-mark {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.poster .badge {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 4;
}

.card-body {
  padding: 16px;
}

.card-title {
  margin: 0 0 8px;
  color: var(--slate-800);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
}

.card-desc {
  display: -webkit-box;
  min-height: 46px;
  margin: 0;
  overflow: hidden;
  color: var(--slate-600);
  font-size: 14px;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  color: var(--slate-500);
  font-size: 12px;
}

.card-meta span {
  padding: 4px 8px;
  border-radius: 8px;
  background: var(--slate-50);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.category-card {
  display: block;
  min-height: 190px;
  padding: 24px;
  border-radius: 22px;
  background: linear-gradient(135deg, #ffffff 0%, #ecfeff 100%);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 44px rgba(15, 23, 42, 0.15);
}

.category-card h2,
.category-card h3 {
  margin: 0 0 10px;
  font-size: 24px;
  color: var(--slate-800);
}

.category-card p {
  margin: 0 0 16px;
  color: var(--slate-600);
}

.category-samples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-samples span {
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--cyan-dark);
  background: #cffafe;
  font-size: 12px;
  font-weight: 700;
}

.rank-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.rank-item {
  display: grid;
  grid-template-columns: 64px 116px minmax(0, 1fr);
  gap: 15px;
  align-items: center;
  padding: 14px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.rank-num {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  font-weight: 900;
}

.rank-poster {
  height: 76px;
  overflow: hidden;
  border-radius: 14px;
  background: var(--slate-100);
}

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

.rank-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  color: var(--slate-800);
}

.rank-desc {
  margin: 0;
  color: var(--slate-600);
  font-size: 13px;
  display: -webkit-box;
  overflow: hidden;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.page-hero {
  padding: 44px;
  border-radius: 26px;
  background: linear-gradient(135deg, #ffffff 0%, #ecfeff 55%, #eff6ff 100%);
  box-shadow: var(--shadow);
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
  letter-spacing: -0.05em;
}

.page-hero p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--slate-600);
  font-size: 17px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--slate-500);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--cyan-dark);
  font-weight: 700;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 28px;
  align-items: start;
}

.player-shell {
  overflow: hidden;
  border-radius: 24px;
  background: #000;
  box-shadow: 0 28px 60px rgba(2, 6, 23, 0.24);
}

.player-box {
  position: relative;
  background: #000;
  aspect-ratio: 16 / 9;
}

.player-box video {
  width: 100%;
  height: 100%;
  background: #000;
  cursor: pointer;
}

.player-cover {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 0;
  padding: 0;
  background: #000;
  cursor: pointer;
}

.player-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.75;
}

.player-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.2));
}

.player-button {
  position: relative;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 82px;
  height: 82px;
  border-radius: 999px;
  color: #fff;
  background: var(--cyan);
  font-size: 34px;
  box-shadow: 0 18px 34px rgba(8, 145, 178, 0.36);
}

.player-cover.is-hidden {
  display: none;
}

.detail-card,
.side-card {
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
}

.detail-card {
  margin-top: 22px;
  padding: 28px;
}

.detail-card h1 {
  margin: 0 0 12px;
  color: var(--slate-800);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.05em;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 14px 0 22px;
}

.detail-meta span,
.tag {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--cyan-dark);
  background: #cffafe;
  font-size: 13px;
  font-weight: 750;
}

.detail-card h2,
.side-card h2 {
  margin: 24px 0 10px;
  color: var(--slate-800);
  font-size: 22px;
}

.detail-card p {
  color: var(--slate-700);
  line-height: 1.86;
}

.side-card {
  padding: 20px;
}

.side-poster {
  overflow: hidden;
  border-radius: 18px;
  background: var(--slate-100);
}

.side-poster img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.related-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.related-list a {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 8px;
  border-radius: 14px;
  background: var(--slate-50);
}

.related-list img {
  width: 72px;
  height: 54px;
  border-radius: 10px;
  object-fit: cover;
  background: var(--slate-100);
}

.related-list strong {
  display: block;
  color: var(--slate-800);
  line-height: 1.35;
}

.related-list span {
  color: var(--slate-500);
  font-size: 12px;
}

.empty-state {
  display: none;
  padding: 30px;
  border-radius: 18px;
  background: #fff;
  color: var(--slate-500);
  text-align: center;
}

.empty-state.is-visible {
  display: block;
}

.site-footer {
  margin-top: 72px;
  padding: 46px 0;
  color: var(--slate-300);
  background: var(--slate-900);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}

.site-footer h2,
.site-footer h3 {
  margin: 0 0 14px;
  color: #fff;
}

.site-footer p,
.site-footer li {
  color: var(--slate-400);
}

.footer-links {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a:hover {
  color: #22d3ee;
}

.footer-bottom {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid rgba(30, 41, 59, 0.9);
  color: var(--slate-500);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 1080px) {
  .video-grid,
  .video-grid.compact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 780px) {
  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .mobile-panel.is-open {
    display: block;
  }

  .hero-carousel {
    height: 560px;
    border-radius: 22px;
  }

  .hero-content {
    padding: 34px 24px 52px;
  }

  .hero-arrow {
    width: 42px;
    height: 42px;
  }

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

  .video-grid,
  .video-grid.compact,
  .category-grid,
  .rank-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .rank-item {
    grid-template-columns: 54px 96px minmax(0, 1fr);
  }

  .page-hero {
    padding: 30px 22px;
  }

  .detail-card {
    padding: 22px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 22px, 1180px);
  }

  .logo {
    font-size: 20px;
  }

  .video-grid,
  .video-grid.compact {
    gap: 14px;
  }

  .poster,
  .poster.tall {
    height: 240px;
  }

  .section-head {
    display: block;
  }
}