* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system,
    BlinkMacSystemFont, sans-serif;
  background: linear-gradient(
    135deg,
    #0f172a 0%,
    #1e1b4b 25%,
    #1f2937 50%,
    #111827 75%,
    #1a1a2e 100%
  );
  min-height: 100vh;
  color: #fff;
  overflow-x: hidden;
  animation: bgShift 20s ease infinite;
  background-size: 200% 200%;
}

@keyframes bgShift {
  0%,
  100% {
    background-position: 0% 0%;
  }

  50% {
    background-position: 100% 100%;
  }
}

.page-bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: -1;
}

.page-bg-glow::before {
  content: "";
  position: absolute;
  width: 800px;
  height: 800px;
  background: radial-gradient(
    circle at center,
    #6366f1 0,
    #4f46e5 30%,
    transparent 70%
  );
  opacity: 0.3;
  filter: blur(80px);
  top: -200px;
  right: -200px;
  animation: float 15s ease-in-out infinite;
}

.page-bg-glow::after {
  content: "";
  position: absolute;
  width: 700px;
  height: 700px;
  background: radial-gradient(
    circle at center,
    #ec4899 0,
    #f43f5e 35%,
    transparent 70%
  );
  opacity: 0.25;
  filter: blur(80px);
  bottom: -250px;
  left: -150px;
  animation: float 18s ease-in-out infinite reverse;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(50px, 50px);
  }
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 0 32px;
  animation: slideDown 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.8),
    0 0 20px rgba(236, 72, 153, 0.4);
  font-weight: 700;
  font-size: 20px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-logo:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 1),
    0 0 30px rgba(236, 72, 153, 0.6);
}

.brand-text-main {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand-text-sub {
  font-size: 11px;
  opacity: 0.6;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: rgba(31, 41, 55, 0.85);
  border: 1px solid rgba(107, 114, 128, 0.75);
  color: #e5e7eb;
}

.primary-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #6366f1, #ec4899);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(236, 72, 153, 0.5),
    0 0 20px rgba(99, 102, 241, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.primary-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s;
}

.primary-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(236, 72, 153, 0.8),
    0 0 30px rgba(99, 102, 241, 0.5);
  filter: brightness(1.1);
}

.primary-btn:hover::before {
  left: 100%;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr);
  gap: 32px;
  align-items: center;
}

.hero-text-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(55, 65, 81, 0.8);
  font-size: 11px;
  margin-bottom: 14px;
}

.hero-dot {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: radial-gradient(
    circle at 30% 30%,
    #fefce8 0,
    #facc15 40%,
    #b45309 100%
  );
  box-shadow: 0 0 18px rgba(250, 204, 21, 0.9);
}

.hero-title {
  font-size: 40px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 12px;
  animation: fadeInUp 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

.hero-title span {
  background: linear-gradient(135deg, #60a5fa, #ec4899, #fbbf24, #6366f1);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: 14px;
  line-height: 1.7;
  color: #9ca3af;
  max-width: 420px;
  margin-bottom: 18px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 12px;
  color: #9ca3af;
  margin-bottom: 20px;
}

.hero-meta strong {
  color: #e5e7eb;
  font-weight: 500;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.secondary-btn {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(75, 85, 99, 0.9);
  background: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.secondary-btn:hover {
  background: rgba(31, 41, 55, 0.95);
  border-color: rgba(156, 163, 175, 0.9);
}

.hero-hint {
  font-size: 11px;
  color: #6b7280;
  margin-top: 4px;
}

.hero-hint span {
  color: #a5b4fc;
}

.video-shell {
  position: relative;
  border-radius: 24px;
  padding: 12px;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.98),
    rgba(15, 23, 42, 0.92)
  );
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.9),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  animation: shellGlow 3s ease-in-out infinite;
}

@keyframes shellGlow {
  0%,
  100% {
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.9),
      inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 20px rgba(99, 102, 241, 0.2);
  }

  50% {
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.9),
      inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 40px rgba(99, 102, 241, 0.4);
  }
}

.video-shell-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 11px;
  color: #9ca3af;
}

.video-shell-title {
  font-size: 12px;
  color: #e5e7eb;
}

.video-shell-dots {
  display: flex;
  gap: 5px;
}

.video-shell-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
}

.video-shell-dot:nth-child(1) {
  background: #f97373;
}

.video-shell-dot:nth-child(2) {
  background: #facc15;
}

.video-shell-dot:nth-child(3) {
  background: #4ade80;
}

.video-main {
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  position: relative;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
}

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

.video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.9) 0%,
    rgba(15, 23, 42, 0.4) 40%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px 16px;
  pointer-events: none;
}

.video-play-center {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.video-play-center.hidden {
  opacity: 0;
}

.play-circle {
  width: 70px;
  height: 70px;
  border-radius: 999px;
  background: linear-gradient(135deg, #6366f1, #ec4899);
  box-shadow: 0 14px 45px rgba(99, 102, 241, 0.9),
    0 0 30px rgba(236, 72, 153, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  animation: playPulse 2s ease-in-out infinite;
}

@keyframes playPulse {
  0%,
  100% {
    box-shadow: 0 14px 45px rgba(99, 102, 241, 0.9),
      0 0 30px rgba(236, 72, 153, 0.5);
  }

  50% {
    box-shadow: 0 14px 45px rgba(99, 102, 241, 1.2),
      0 0 50px rgba(236, 72, 153, 0.8);
  }
}

.play-circle:hover {
  transform: translateY(-4px) scale(1.12);
  box-shadow: 0 24px 60px rgba(99, 102, 241, 1),
    0 0 60px rgba(236, 72, 153, 0.8);
}

.play-triangle {
  width: 0;
  height: 0;
  border-left: 20px solid #0f172a;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 3px;
}

.video-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 11px;
}

.video-caption-main {
  color: #e5e7eb;
}

.video-caption-sub {
  color: #9ca3af;
}

.video-timeline {
  margin-top: 8px;
  height: 4px;
  border-radius: 999px;
  background: rgba(75, 85, 99, 0.7);
  overflow: hidden;
  position: relative;
}

.video-timeline-fill {
  position: absolute;
  inset: 0;
  width: 0;
  background: linear-gradient(90deg, #4f46e5, #ec4899);
  transition: width 0.15s linear;
}

.video-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 11px;
  color: #9ca3af;
}

.video-footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.video-dot-live {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.9);
}

.chip {
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(31, 41, 55, 0.9);
  border: 1px solid rgba(75, 85, 99, 0.9);
  font-size: 10px;
  color: #e5e7eb;
}

.video-footer-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot-separator {
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: rgba(75, 85, 99, 0.9);
}

.thumb-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.thumb-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(31, 41, 55, 0.7),
    rgba(17, 24, 39, 0.8)
  );
  padding: 8px 9px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.thumb-item:hover {
  border-color: rgba(99, 102, 241, 0.6);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.15),
    rgba(236, 72, 153, 0.1)
  );
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.thumb-item.active {
  border-color: rgba(99, 102, 241, 0.9);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.35),
    rgba(236, 72, 153, 0.15)
  );
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.thumb-title {
  font-size: 11px;
  color: #e5e7eb;
}

.thumb-meta {
  font-size: 10px;
  color: #9ca3af;
  display: flex;
  justify-content: space-between;
}

.thumb-badge {
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(30, 64, 175, 0.7);
  color: #c7d2fe;
  font-size: 9px;
}

@media (max-width: 960px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

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

  .hero-title {
    font-size: 32px;
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 16px;
  }

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

  .video-shell {
    padding: 10px;
  }

  .play-circle {
    width: 60px;
    height: 60px;
  }
}

.copyright {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.5px;
  line-height: 1.8;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent);
  backdrop-filter: blur(10px);
  z-index: 100;
}

.copyright a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.3s ease;
}

.copyright a:hover {
  color: rgba(99, 102, 241, 0.8);
}

.copyright-divider {
  display: inline-block;
  margin: 0 8px;
  opacity: 0.3;
}