html, body {
  height: 100%;
  margin: 0;
  font-family: "Microsoft Yahei", sans-serif;
}

.navbar {
  background-color: #004c97;
}

.navbar-brand, .nav-link {
  color: #fff !important;
}

.container {
  padding: 0 15px;
}

.section-title {
  border-left: 5px solid #004c97;
  padding-left: 10px;
  margin: 40px 0 20px;
  font-weight: bold;
  font-size: 1.8rem;
  color: #003366;
}

.footer {
  background-color: #002b5c;
  color: white;
  padding: 30px 0;
  text-align: center;
  font-size: 0.9rem;
  margin-top: 3rem;
}

.footer p {
  margin: 0.5rem 0;
}

.mobile-fixed-btns {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #004c97;
  color: white;
  text-align: center;
  padding: 10px 0;
  box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.2);
  z-index: 1000;
}

.mobile-fixed-btns a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
  font-size: 1rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .mobile-fixed-btns {
    display: flex;
    justify-content: center;
  }
}