.buttongrey {
  display: inline-block;
  min-width: 200px;
  height: 44px;
  line-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  color: #fff;
  background-color: #5b6f84; /* グレイッシュブルー */
  border: none;
  border-radius: 22px;
  cursor: pointer;
  box-sizing: border-box;
  transition: background 0.3s ease;
}

/* ホバー時の反応 */
.buttongrey:hover {
  background-color: #4a5c6e;
  text-decoration: none;
}