html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
}

/* 自定义样式 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    margin-bottom: 50px;
}

.card {
    transition: transform 0.3s ease;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #5a6fd8, #6a4190);
    transform: translateY(-2px);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}