body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f6f8fa;
  }
  .question {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: bold;
  }
  .options {
    list-style: none;
    padding: 0;
  }
  .options li {
    margin: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .options button {
    flex: 1;
    padding: 12px;
    font-size: 18px;
    border: 2px solid #ccc;
    border-radius: 12px;
    cursor: pointer;
    background: #fff;
    text-align: left;
  }
  .options button.selected {
    border-color: #1cb0f6;
    background: #e6f7ff;
  }
  .details {
    margin-left: 10px;
    font-size: 14px;
    text-decoration: underline;
    color: #1cb0f6;
    cursor: pointer;
    flex-shrink: 0;
  }
  #check, #next {
    margin-top: 20px;
    padding: 12px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 12px;
    border: none;
    background: #1cb0f6;
    color: white;
    width: 100%;
  }
  #result {
    margin-top: 15px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
  }
.icon-speaker.playing {
    color: #ff6600;
    animation: shake 0.6s infinite;
}

/* ���ʵȼ��� */
.m-level-box {
  margin: 15px 10px;
  padding: 12px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  border: 1px solid #f0f0f0;
}

/* ��������� */
.m-level-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #eee;
  padding-bottom: 6px;
  margin-bottom: 10px;
}

.m-level-header span {
  font-size: 15px;
  font-weight: 600;
  color: #38b0e5;
}

.m-more {
  font-size: 12px;
  color: #999;
  text-decoration: none;
}

.m-more:hover {
  color: #38b0e5;
}

/* ��� */
.m-level-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* ����� */
  gap: 10px;
}

/* ÿ�������� */
.m-level-list li {
  background: #f8f8f8;
  border-radius: 6px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid #eee;
}

.m-level-list li a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: #444;
  text-decoration: none;
}

.m-level-list li:hover {
  background: #38b0e5;
}

.m-level-list li:hover a {
  color: #fff;
}

/* �ȼ��� */
.levels {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* �������� */
.m-word-list-container {
  width: 94%;
  margin: 15px auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.05);
  padding: 10px 12px 20px;
}

/* ���� */
.m-word-list-container .m-title {
  font-size: 18px;
  font-weight: bold;
  color: #38b0e5;
  margin-bottom: 12px;
  text-align: center;
}

/* �����б� */
.m-word-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ������ */
.m-word-item {
  border-bottom: 1px solid #eee;
  padding: 10px 0;
  transition: background-color 0.2s;
}

.m-word-item:last-child {
  border-bottom: none;
}

.m-word-item:hover {
  background-color: #f9f9f9;
}

/* �ϰ벿�֣����� + ���Ű�ť */
.m-word-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* �������� */
.m-word {
  font-size: 17px;
  font-weight: bold;
  color: #333;
  text-decoration: none;
}

.m-word:hover {
  color: #38b0e5;
}


.m-play-btn:hover {
  background: #2c8ccf;
  transform: scale(1.05);
}

/* ������Ϣ */
.m-word-info {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14px;
}

/* �Ѷ� */
.m-level {
  color: #38b0e5;
  font-weight: 500;
}

/* ���� */
.m-translation {
  color: #333;
  font-weight: bold;
}

/* ����ѡ�� */
.m-wrong {
  color: #999;
  font-style: italic;
}