/* 基础样式 */
body {
  font-family: 'Arial', sans-serif;
  color: #333;
  background-color: #f5f5f5;
  margin: 0;
  padding: 0;
  background-image: url('null');
  background-size: cover;
  background-attachment: fixed;
}

h1, h2, h3, h4 {
  color: #333;
  font-family: 'Arial', sans-serif;
  margin: 20px 0;
}

h1 {
  background-color: #f8f8f8;
  padding: 10px;
  border-left: 5px solid #007CF4;
}

h2 {
  background-color: #e9e9e9;
  padding: 10px;
  border-bottom: 2px solid #007CF4;
}

h3 {
  background-color: #f0f0f0;
  padding: 10px;
}

h4 {
  background-color: #e0e0e0;
  padding: 10px;
}

a {
  color: #007CF4;
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: bold;
}

a:hover {
  color: #0056b3;
  text-decoration: underline;
}

a:active {
  color: #003d82;
}

ul {
  list-style-type: none;
  padding: 0;
  background-color: #f5f5f5;
  border-radius: 8px;
}

li {
  padding: 10px;
  margin-bottom: 0;
  border-bottom: 1px solid #e0e0e0;
}

li:last-child {
  border-bottom: none;
}

/* 按钮样式 */
.button {
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  margin: 10px;
  font-size: 16px; /* 增加字体大小 */
  border: none;
  outline: none;
  cursor: pointer;
}

.primary-button {
  color: white;
  background-color: #007CF4;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.secondary-button {
  color: #007CF4;
  background-color: white;
  border: 1px solid #007CF4;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.button:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transform: scale(1.05);
}

.button:active {
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  transform: translateY(1px);
}

/* 通知框样式 */
.notice {
  padding: 12px 12px 32px 20px;
  border-radius: 8px;
  background-color: #FFFEF6;
  border: 1px solid #ffe850;
  margin: 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  display: none;
}

/* 容器样式 */
.main_container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.main_container > div {
  width: 100%;
  max-width: 450px;
  height: auto;
  margin: 10px;
  text-align: center;
  font-size: 15px;
  line-height: 1.8;
}

.main_container > div > img {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  box-shadow: 0 5px 15px 0 #aaa;
}

.main_container > div > h2 {
  margin-top: 2%;
  margin-right: -2%;
}

.main_container > div > ul {
  text-align: left;
}

/* 响应式布局 */
@media (max-width: 768px) {
  body {
    background-image: none;
  }

  .main_container > div {
    max-width: 100%;
    margin: 10px 0;
  }

  .notice {
    flex-direction: column;
    align-items: center;
  }

  .button {
    width: 100%;
    margin: 10px 0;
  }

  .main_container {
    justify-content: center;
    align-items: center;
  }
}

.keyword {
  color: #007CF4; /* 红色 */
}

.keyword1 {
  color: #007CF4; /* 红色 */
}