body.kuchi-thanks-page {
  margin: 0;
  padding: 0;
  /* base green #4caf50 を薄く展開したグラデーション */
  background: linear-gradient(-45deg,
      rgba(76, 175, 80, 0.25),
      rgba(139, 195, 74, 0.25),
      rgba(200, 230, 201, 0.25),
      rgba(165, 214, 167, 0.25));
  background-size: 400% 400%;
  animation: ks-bg-move 12s ease infinite;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@keyframes ks-bg-move {
  0% {
    background-position: 0% 50%;
  }

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

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

/* ───────── Header & Logo ───────── */
.ks-thanks-header {
  margin-top: 6vh;
  text-align: center;
  animation: fadeInDown 1s ease-out forwards;
  opacity: 0;
}

.ks-thanks-header img {
  max-width: 240px;
  height: auto;
  margin: 0 auto;
}

/* ───────── Thanks Card ───────── */
.ks-thanks {
  max-width: 720px;
  margin: 4vh auto 0vh;
  padding: 3.5rem 2rem;
  backdrop-filter: blur(12px) saturate(180%);
  background: rgba(255, 255, 255, 0.65);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(76, 175, 80, 0.15);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "メイリオ", sans-serif;
  line-height: 1.65;
  text-align: center;
  animation: fadeInUp 1.2s ease-out forwards;
  opacity: 0;
}

.ks-thanks h1 {
  font-size: clamp(1.75rem, 4.5vw, 2.4rem);
  font-weight: 700;
  margin: 0 0 1.25rem;
  color: #2e7d32;
}

.ks-thanks p {
  font-size: clamp(.95rem, 3.4vw, 1.05rem);
  margin: .9rem 0;
}

.ks-thanks ul {
  max-width: 480px;
  margin: 1.5rem auto;
  padding-left: 1.2rem;
  text-align: left;
}

.ks-thanks li {
  margin: .55rem 0;
  list-style: disc;
}

.ks-thanks .contact {
  margin-top: 2.2rem;
  font-weight: 600;
  font-size: .95rem;
  color: #2e7d32;
}

/* ───────── Footer / Home Btn ───── */
.ks-thanks-footer {
  text-align: center;
  margin: 6vh 0 10vh;
}

.ks-btn-home {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  background: #43a047;
  color: #fff;
  font-weight: 600;
  border-radius: 50px;
  text-decoration: none;
  transform: translateY(0);
  transition: transform .25s, box-shadow .25s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
}

.ks-btn-home:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, .2);
}

/* ───────── Fade Animations ───────── */
@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-30px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ───────── Responsive tweaks ─────── */
@media(max-width:480px) {
  .ks-thanks-header {
    margin-top: 4vh;
  }

  .ks-thanks-footer {
    margin: 5vh 0 9vh;
  }
}

.sp-br {
  display: none;
}

@media(max-width:480px) {
  .sp-br {
    display: block;
  }
}