/* 全站公共样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

/* 导航栏样式 */
.navbar {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: white;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
  margin-bottom: 0;
  color:#999999;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-size: 1rem;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.8;
}

.nav-links a.btn-primary {
  background: white;
  color: #667eea;
  padding: 0.5rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.3s;
}

.nav-links a.btn-primary:hover {
  transform: translateY(-2px);
}

/* 页脚样式 */
.footer {
  background: #2c3e50;
  color: white;
  padding: 3rem 2rem 1rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  line-height: 2;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* 通用按钮样式 */
.btn {
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  display: inline-block;
}

.btn-white {
  background: white;
  color: #667eea;
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline {
  background: transparent;
  color: #667eea;
  border: 2px solid #667eea;
}

.btn-outline:hover {
  background: #667eea;
  color: white;
}

/* 通用容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 通用表单样式 */
.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: #333;
  font-weight: 500;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
  box-sizing: border-box;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 段落和列表 */
p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

/* 工具类 */
.last-updated {
  color: #666;
  font-style: italic;
  margin-bottom: 2rem;
}

/* 卡片样式 */
.card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 2rem;
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-2px);
}

.info-card {
  background: #f8f9fa;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

/* 页面头部 */
.header {
  text-align: center;
  margin-bottom: 3rem;
  padding-top: 2rem;
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.header p {
  font-size: 1.2rem;
}

/* 统计卡片 */
.stat-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: #667eea;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: #666;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

/* 网格布局 */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 按钮扩展 */
.btn-primary {
  background: #667eea;
  color: white;
}

.btn-primary:hover {
  background: #5a6fd8;
}

.btn:disabled {
  background: #ccc;
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-full {
  width: 100%;
}

/* 链接样式 */
.links {
  text-align: center;
  margin-top: 1rem;
}

.links a {
  color: #667eea;
  text-decoration: none;
  margin: 0 0.5rem;
}

.links a:hover {
  text-decoration: underline;
}

/* 结果卡片 */
.result-card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 3rem;
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.success-icon {
  font-size: 4rem;
  color: #28a745;
  margin-bottom: 1rem;
}

.cancel-icon {
  font-size: 4rem;
  color: #ffc107;
  margin-bottom: 1rem;
}

/* 响应式 */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }
  
  .container {
    padding: 10px;
  }

  .header h1 {
    font-size: 2rem;
  }

  .header p {
    font-size: 1rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}