/* 网址导航站点样式 */
:root {
  --primary-color: #4361ee;
  --secondary-color: #3a0ca3;
  --accent-color: #7209b7;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --border-color: #e9ecef;
  --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f8ff;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部导航 */
header {
  background-color: white;
  box-shadow: var(--box-shadow);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  color: var(--primary-color);
  font-size: 24px;
  margin: 0;
  font-weight: 800;
}

nav {
  display: flex;
  gap: 15px;
}

nav a {
  color: var(--dark-color);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  padding: 8px 16px;
  border-radius: 8px;
}

nav a:hover {
  color: var(--primary-color);
  background-color: rgba(67, 97, 238, 0.1);
}

/* 页脚 */
footer {
  background-color: white;
  padding: 20px 0;
  margin-top: 50px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: #6c757d;
}

/* 内容区域 */
main {
  min-height: calc(100vh - 180px);
}

h2 {
  margin-bottom: 20px;
  color: var(--dark-color);
  font-weight: 600;
}

/* 卡片样式 */
.card {
  background-color: white;
  border-radius: 12px;
  box-shadow: var(--box-shadow);
  padding: 25px;
  margin-bottom: 25px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s;
  text-decoration: none;
  text-align: center;
}

.btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: white;
}

/* 表单样式 */
input, select, textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--dark-color);
}

/* 表格样式 */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

th, td {
  padding: 15px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-weight: 600;
  background-color: rgba(67, 97, 238, 0.05);
  color: var(--primary-color);
}

tr:hover {
  background-color: rgba(67, 97, 238, 0.02);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .container {
    padding: 0 15px;
  }
}

@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    gap: 15px;
  }
  
  nav {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}