.login_bigbox {
  max-width: 360px;          /* 살짝 줄여서 모바일 비율 개선 */
  margin: 60px auto 30px;    /* 상단 여백 늘려서 더 깔끔하게 중앙 정렬 느낌 */
  padding: 30px 24px;
  background-color: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
  width: 92%;                /* 좌우 폭 살짝 줄임 */
}

.login_title {
  text-align: center;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 30px;
}

.log_form input[type="text"],
.log_form input[type="password"] {
  width: 100%;
  height: 48px;
  font-size: 1rem;
  padding: 0 15px;
  margin-bottom: 16px;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-sizing: border-box;
}

.button_form input[type="submit"] {
  width: 100%;
  height: 50px;
  background-color: #3b5998;
  color: white;
  font-size: 1.1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.button_form input[type="button"] {
  width: 100%;
  height: 50px;
  background-color: #ffeb00;
  font-weight: bold;
  color: #000;
  font-size: 1.1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 10px;
}

.another_form {
  text-align: center;
  margin-top: 20px;
  font-size: 0.9rem;
}

.ano {
  text-align: center;
  margin-top: 10px;
  font-size: 0.85rem;
  color: #666;
}