* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  color: #fff;
  background: #000;
}

.bg-video {
  position: fixed;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.55));
  z-index: 1;
}

.pop-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 10px 12px 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pop {
  width: 100%;
  max-width: 420px;
  background: rgba(0, 0, 0, 0.68);
  border-radius: 20px;
  padding: 18px 16px 22px;
  text-align: center;
  position: relative;
  box-shadow: 0 0 22px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: pop-in 0.28s ease-out;
}

@keyframes pop-in {
  from {
    transform: translateY(18px) scale(0.96);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.tag {
  position: absolute;
  top: -12px;
  left: 16px;
  background: linear-gradient(90deg, #ff2d2d, #ff7a7a);
  color: #fff;
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.title {
  color: #fff;
  margin-top: 16px;
}

.title-line-main {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 10px;
  color: #ffdd33;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

.title-line-sub {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: #ffffff;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

.sub {
  margin-top: 18px;
  font-size: 20px;
  font-weight: 800;
  color: #ff5f6d;
  line-height: 1.4;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

.desc {
  color: rgba(255, 255, 255, 0.95);
  font-size: 15px;
  margin-top: 14px;
  line-height: 1.5;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9);
}

.btn {
  margin-top: 22px;
  display: inline-block;
  width: 100%;
  background: linear-gradient(90deg, #ff5f6d, #ffc371);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  padding: 13px 0;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(255, 95, 109, 0.55);
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.12s ease-out, box-shadow 0.12s ease-out;
  animation: btn-pulse 1.6s infinite ease-out;
  cursor: pointer;
  border: none;
}

.btn:active {
  transform: translateY(1px) scale(0.985);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);
}

@keyframes btn-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 95, 109, 0.55);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(255, 95, 109, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 95, 109, 0);
  }
}

.tip {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
  line-height: 1.4;
}

@media (max-width: 380px) {
  .pop {
    padding: 14px 12px 18px;
  }

  .title-line-main {
    font-size: 22px;
  }

  .title-line-sub {
    font-size: 16px;
  }

  .sub {
    font-size: 18px;
  }

  .desc {
    font-size: 14px;
  }

  .btn {
    font-size: 18px;
    padding: 11px 0;
  }
}

@media (orientation: landscape) and (max-height: 480px) {
  .pop-wrapper {
    padding: 6px 10px;
  }

  .pop {
    max-width: 380px;
    padding: 12px 12px 16px;
  }

  .title-line-main {
    font-size: 20px;
  }

  .title-line-sub {
    font-size: 15px;
  }

  .sub {
    font-size: 16px;
  }

  .desc {
    font-size: 13px;
  }

  .btn {
    font-size: 16px;
    padding: 9px 0;
  }
}