.tokyu-future .container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px;
}
.tokyu-future .top-section {
  text-align: center;
  margin-bottom: 60px;
}

.tokyu-future .main-title {
  display: inline-block;
  font-size: 60px;
  position: relative;
  color: #2d3a07;
  padding: 0 1rem;
  z-index: 2;
}

.tokyu-future .main-title::after {
  content: "";
  position: absolute;
  bottom: 35px;
  left: 0;
  width: 100%;
/*   height: 12px; */
  background: linear-gradient(to right, #4a7d3a, #98b34c);
  border-radius: 4px;
  z-index: -1;
}

.tokyu-future .lead-text {
  margin-top: 20px;
  font-size: 0.95rem;
  font-size: 20px;
}

.tokyu-future .grid-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 138px;
}

.tokyu-future .card {
  background-color: #fef8f8;
  border-radius: 12px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tokyu-future .card-logo {
  height: 58px;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.tokyu-future .card-logo.placeholder {
  background: #e0e0e0;
  width: 200px;
  height: 58px;
  justify-content: center;
  color: #666;
  font-size: 20px;
}

.tokyu-future .logo-img {
  height: 100%;
}

.tokyu-future .card-image {
  width: 100%;
  margin-bottom: 20px;
}

.tokyu-future .card-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.tokyu-future .card-text {
  font-size: 0.85rem;
  margin-bottom: 20px;
  min-height: 3em;
}

.tokyu-future .btn-link {
  display: flex;
  background-color: #ffecec;
  color: #e60012;
  text-decoration: none;
  padding: 3px 30px;
  border-radius: 20px;
  font-size: 16px;
  font-weight: bold;
  transition: opacity 0.3s;
  position: relative;
  justify-content: center;
  width: fit-content;
  margin: auto;
}

.tokyu-future .btn-link:hover {
  opacity: 0.7;
}

.tokyu-future .btn-link .arrow {
  margin-left: 5px;
}

.sp_only {
  display: none; /* PCでは非表示 */
}

@media (max-width: 767px) {
  .sp_only {
    display: block; /* スマホだけ表示 */
  }
}

@media (max-width: 1024px) {
  .tokyu-future .main-title {
    font-size: 48px;
  }

  .tokyu-future .main-title::after {
    bottom: 10px;
    height: 10px;
  }

  .tokyu-future .grid-container {
    grid-template-columns: 1fr 1fr; /* 2カラム維持 */
    gap: 40px;
  }

  .tokyu-future .card {
    padding: 20px;
  }
}

@media (max-width: 767px) {
  .tokyu-future .container {
    padding: 20px 15px;
  }

  .tokyu-future .main-title {
    font-size: 32px;
    padding: 0 0.5rem;
    line-height: 1.3;
  }

  .tokyu-future .main-title::after {
    bottom: 5px;
    height: 8px;
  }

  .tokyu-future .lead-text {
    font-size: 16px;
  }

  /* ★ ここが縦並びにする本体 */
  .tokyu-future .grid-container {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 80px;
  }

  .tokyu-future .card {
    padding: 20px;
  }

  .tokyu-future .card-logo.placeholder {
    width: 150px;
    height: 50px;
    font-size: 16px;
  }

  .tokyu-future .btn-link {
    font-size: 14px;
    padding: 4px 20px;
  }
}