/* 按鈕閃光 S (優化版) */
.light {
  width: 100%;
  text-align: center;
  font-size: 2rem;
  overflow: hidden;
  /* 保持 overflow: hidden 來隱藏移動到外部的閃光 */
  display: block;
  position: relative;
}

.light:after {
  content: "";
  display: block;
  position: absolute;
  /* 移除 left: -150%; 改為固定的 left: 0 */
  left: 0;
  top: 0;
  width: 50%;
  height: 100%;
  background: -webkit-linear-gradient(left,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.7) 100%
      /* 稍微調亮顏色以便觀察 */
    );
  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.7) 100%);
  /* 將 transform 移至 keyframes 中統一控制 */
  animation: light-transform 3s infinite ease-in-out;
}

/* 將 keyframes 的 left 改為 transform */
@keyframes light-transform {
  0% {
    /* 結合 skewX 和 translateX */
    transform: skewX(-25deg) translateX(-300%);
  }

  70% {
    transform: skewX(-25deg) translateX(300%);
  }

  100% {
    transform: skewX(-25deg) translateX(300%);
  }
}

/* 按鈕閃光 S */
/* 按鈕跳動-果凍 */
.ani-bounce {
  animation: bounce 2s infinite ease-in-out;
}

.ani-scale {
  animation: scale 1s infinite ease-in-out;
}

.ani-scale_2 {
  animation: scale 1s infinite ease-in-out;
  animation-delay: 0.5s;
}

.ani-scale_3 {
  animation: scale 1.2s infinite ease-in-out;
}

.ani-float-horizontal {
  animation: float-horizontal 1.5s ease-in-out infinite;
}

.ani-float-vertical {
  animation: float-vertical 1.5s ease-in-out infinite;
}

.ani-float-vertical-2 {
  animation: float-vertical 2s ease-in-out infinite;
}

.ani-float-vertical-3 {
  animation: float-vertical 1.5s ease-in-out infinite;
  animation-delay: 0.7s;
}

.ani-twinkle {
  animation: twinkle 2s infinite ease-in-out;
}

.ani-neon {
  animation: neonLight 2.5s infinite ease-in-out;
}

.BeAf_container {
  position: relative;
  width: 100%;
  height: 337px;
  overflow: hidden;
}

.BeAf_image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.BeAf_top {
  animation: revealClip 2s infinite alternate ease-in-out;
  clip-path: polygon(var(--pos, 50%) 0%,
      100% 0%,
      100% 100%,
      var(--pos, 50%) 100%);
}

.BeAf_line {
  position: absolute;
  top: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(to bottom,
      rgba(255, 255, 255, 0.8),
      white,
      rgba(255, 255, 255, 0.8));
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.6),
    0 0 40px rgba(255, 255, 255, 0.4), 0 0 60px rgba(255, 255, 255, 0.2);
  filter: blur(0.5px);
  animation: moveLine 4s infinite alternate ease-in-out;
  pointer-events: none;
  z-index: 10;
  animation: moveLine 2s infinite alternate ease-in-out;
  pointer-events: none;
}

.BeAf_line_B {
  animation-delay: 0.7s;
}

.BeAf_line_C {
  animation-delay: 1s;
}

@media screen and (width: 768px) {

  .BeAf_image,
  .BeAf_line {
    height: 76%;
  }
}

@media screen and (max-width: 768px) {

  .BeAf_image,
  .BeAf_line {
    height: 38%;
  }
}

@keyframes revealClip {
  0% {
    clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
  }

  10% {
    clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
  }

  90% {
    clip-path: polygon(100% 0%, 100% 0%, 100% 100%, 100% 100%);
  }

  100% {
    clip-path: polygon(100% 0%, 100% 0%, 100% 100%, 100% 100%);
  }
}

@keyframes moveLine {
  0% {
    left: 0%;
  }

  10% {
    left: 0%;
  }

  90% {
    left: 100%;
  }

  100% {
    left: 100%;
  }
}

@keyframes bounce {
  0% {
    transform: scale(1, 1) translate3d(0, 0, 0);
  }

  10% {
    transform: scale(1.05, 0.95) translate3d(0, 0, 0);
  }

  30% {
    transform: scale(0.95, 1.05) translate3d(0, -8%, 0);
  }

  50% {
    transform: scale(1.02, 0.97) translate3d(0, 0, 0);
  }

  57% {
    transform: scale(1, 1) translate3d(0, -2%, 0);
  }

  64% {
    transform: scale(1, 1) translate3d(0, 0, 0);
  }

  100% {
    transform: scale(1, 1) translate3d(0, 0, 0);
  }
}

@keyframes scale {
  0% {
    transform: scale(1, 1);
  }

  50% {
    transform: scale(1.1, 1.1);
  }

  100% {
    transform: scale(1, 1);
  }
}

@keyframes float-horizontal {
  0% {
    transform: translateX(0);
  }

  50% {
    transform: translateX(20px);
  }

  100% {
    transform: translateX(0);
  }
}

@keyframes float-vertical {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }

  100% {
    transform: translateY(0);
  }
}

@keyframes twinkle {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 1;
  }
}

@keyframes neonLight {
  0% {
    opacity: 0.3;
  }

  5% {
    opacity: 0.8;
  }

  10% {
    opacity: 0.5;
  }

  20% {
    opacity: 0.8;
  }

  25% {
    opacity: 0.3;
  }

  40% {
    opacity: 1;
  }

  100% {
    opacity: 1;
  }
}