.sim-settings {
  font-family: sans-serif;
  line-height: 1.6;
  color: #333;
  padding: 50px 20px 20px 20px;
}

.sim-settings section {
  margin: 50px 0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

.step1 {
  max-width: 800px;
  margin: 0 auto;
  background-color: #F6FFF7;
  padding: 40px;
}

.t-title {
  position: relative;
  text-align: center;
  font-size: 24px;
  margin-bottom: 40px;
  display: block;
}

.t-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 5px;
  background-color: #65FC00;
}

h2 {
  font-size: 20px;
  padding-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

h2 .step {
  background-color: #000;
  color: #fff;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  margin-right: 10px;
}

.desc {
  text-align: center;
  margin-bottom: 20px;
}

.card-container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 10px;
}

.card {
  flex: 1;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  background-color: #fff;
}

.card h3 {
  font-size: 16px;
  margin-top: 0;
  border-bottom: 1px solid #eee;
  padding-bottom: 15px;
}

.card img {
  height: 100px;
  margin: 20px 0;
  object-fit: contain;
}

.card p {
  font-size: 14px;
  margin: 0;
}

.notice-box {
  padding: 20px;
  border-radius: 5px;
}

.notice-box h4 {
  text-align: center;
  margin-top: 0;
}

.notice-box dl {
  margin: 0;
}

.notice-box dt {
  font-weight: bold;
  margin-top: 15px;
}

.notice-box dd {
  margin-left: 0;
  font-size: 14px;
  margin-top: 5px;
}

.notice-box .link {
  display: block;
  color: #0066cc;
  text-decoration: none;
}

.step2 {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
}

.radio-group {
  margin-bottom: 30px;
}

.radio-group p {
  text-align: center;
  font-weight: bold;
  margin-bottom: 15px;
}

.radio-options {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.radio-btn {
  border: 1px solid #ccc;
  border-radius: 30px;
  padding: 10px 20px;
  width: 250px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.radio-btn input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border: 1px solid #a0a0a0;
  border-radius: 50%;
  margin-right: 15px;
  background-color: #fff;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.radio-btn input[type="radio"]:checked::after {
  content: "";
  width: 15px;
  height: 15px;
  background-color: #65FC00;
  border-radius: 50%;
}

.note {
  font-size: 12px;
  color: #666;
  margin: 20px auto 40px;
  max-width: 600px;
}

.submit-btn {
  display: block;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  background-color: #65FC00;
  color: #000;
  border: none;
  border-radius: 30px;
  padding: 15px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.submit-btn:hover {
  background-color: #a7ff68;
}

/* ==========================================================
   SP版
   ========================================================== */
@media (max-width: 768px) {
  .sim-settings {
    padding: 30px 10px 10px 10px;
  }

  .step1, .step2 {
    padding: 20px 15px;
  }

  .t-title {
    font-size: 20px;
  }

  h2 {
    font-size: 18px;
  }

  h4 {
    font-size: 15px;
  }

  dt {
    font-size: 15px;
  }

  .card-container {
    flex-direction: column;
    gap: 15px;
  }

  .card {
    padding: 15px;
  }

  .notice-box {
    padding: 15px;
  }

  .radio-options {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .radio-btn {
    width: 100%;
    max-width: 300px;
  }
}