.comet-block {
  background: #fffaf5;
  border: 1px solid #d8cbb7;
  border-radius: 12px;
  padding: 15px 7.5px;
  margin: 30px auto;
  max-width: 500px;
  width: 95%;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
  text-align: center;
  font-family: 'Noto Serif JP', serif;
  font-size: 16px; /* ベースフォントサイズ */
box-sizing: border-box;
}

.comet-block select {
  width: 100%;
  padding: 8px;
  font-size: 16px;
  margin-bottom: 16px;
  border: 1px solid #c7bba8;
  border-radius: 6px;
  background: #fefdfb;
  box-sizing: border-box;
  transition: border-color 0.3s;
}

.comet-block select:focus {
  border-color: #a9906e;
  outline: none;
box-sizing: border-box;
}

.comet-block button {
  background: linear-gradient(145deg, #b39775, #e2cdb4);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 18px;
  margin: 0 8px;
  cursor: pointer;
  font-size: 16px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  transition: background 0.3s, box-shadow 0.3s;
box-sizing: border-box;
}

.comet-block button:hover {
  background: linear-gradient(145deg, #9f7e5c, #d8bfa3);
}