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: 0;
  font-family: "Microsoft YaHei", "SimHei", sans-serif;
}

.bg-primary {
  background-color: #1e3a8a !important;
}

.hero-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: white;
  padding: 80px 0;
}

.section-title {
  position: relative;
  padding-bottom: 15px;
  margin-bottom: 40px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: #1e3a8a;
}

.software-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e5e7eb;
}

.software-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.news-item {
  border-left: 4px solid #1e3a8a;
  padding-left: 15px;
  margin-bottom: 20px;
  transition: background-color 0.3s ease;
}

.news-item:hover {
  background-color: #f3f4f6;
}

.nav-link:hover {
  opacity: 0.8;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}