/*
 * Bootstrap 5 Navbar Container Compatibility
 * 
/* a link 下划线 none */
a, .btn-link {
  text-decoration: none;
}

/* Base container styles for nested structure */
.navbar>.row>.container,
.navbar>.row>.container-fluid,
.navbar>.row>.container-sm,
.navbar>.row>.container-md,
.navbar>.row>.container-lg,
.navbar>.row>.container-xl,
.navbar>.row>.container-xxl {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

/* 
 * Bootstrap 5 Grid System Compatibility
 * In Bootstrap 5, .col-* classes no longer have position: relative by default.
 * This can break layouts that rely on absolutely positioned children within columns.
 * Re-add position: relative for backward compatibility with Bootstrap 4 behavior.
 */
/* .row {
  margin-left: -15px;
  margin-right: -15px;
}
.row>* {
  padding-left: 15px;
  padding-right: 15px;
} */
.col,
.col-auto,
.col-1,
.col-2,
.col-3,
.col-4,
.col-5,
.col-6,
.col-7,
.col-8,
.col-9,
.col-10,
.col-11,
.col-12,
.col-sm,
.col-sm-auto,
.col-sm-1,
.col-sm-2,
.col-sm-3,
.col-sm-4,
.col-sm-5,
.col-sm-6,
.col-sm-7,
.col-sm-8,
.col-sm-9,
.col-sm-10,
.col-sm-11,
.col-sm-12,
.col-md,
.col-md-auto,
.col-md-1,
.col-md-2,
.col-md-3,
.col-md-4,
.col-md-5,
.col-md-6,
.col-md-7,
.col-md-8,
.col-md-9,
.col-md-10,
.col-md-11,
.col-md-12,
.col-lg,
.col-lg-auto,
.col-lg-1,
.col-lg-2,
.col-lg-3,
.col-lg-4,
.col-lg-5,
.col-lg-6,
.col-lg-7,
.col-lg-8,
.col-lg-9,
.col-lg-10,
.col-lg-11,
.col-lg-12,
.col-xl,
.col-xl-auto,
.col-xl-1,
.col-xl-2,
.col-xl-3,
.col-xl-4,
.col-xl-5,
.col-xl-6,
.col-xl-7,
.col-xl-8,
.col-xl-9,
.col-xl-10,
.col-xl-11,
.col-xl-12,
.col-xxl,
.col-xxl-auto,
.col-xxl-1,
.col-xxl-2,
.col-xxl-3,
.col-xxl-4,
.col-xxl-5,
.col-xxl-6,
.col-xxl-7,
.col-xxl-8,
.col-xxl-9,
.col-xxl-10,
.col-xxl-11,
.col-xxl-12 {
  position: relative;
}

/* 
 * Backward compatibility for Bootstrap 4 navbar color classes
 * Bootstrap 5 removed .navbar-light and .navbar-dark in favor of data-bs-theme
 * These rules ensure legacy HTML continues to work with Bootstrap 5
 */
.navbar-light .navbar-brand {
  color: rgba(0, 0, 0, 0.9);
}

.navbar-light .navbar-brand:hover,
.navbar-light .navbar-brand:focus {
  color: rgba(0, 0, 0, 0.9);
}

.navbar-light .navbar-nav .nav-link {
  color: rgba(0, 0, 0, 0.5);
}

.navbar-light .navbar-nav .nav-link:hover,
.navbar-light .navbar-nav .nav-link:focus {
  color: rgba(0, 0, 0, 0.7);
}

.navbar-light .navbar-nav .nav-link.disabled {
  color: rgba(0, 0, 0, 0.3);
}

.navbar-light .navbar-nav .show>.nav-link,
.navbar-light .navbar-nav .active>.nav-link,
.navbar-light .navbar-nav .nav-link.show,
.navbar-light .navbar-nav .nav-link.active {
  color: rgba(0, 0, 0, 0.9);
}

.navbar-light .navbar-toggler {
  color: rgba(0, 0, 0, 0.5);
  border-color: rgba(0, 0, 0, 0.1);
}

.navbar-light .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 0, 0, 0.5%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-light .navbar-text {
  color: rgba(0, 0, 0, 0.5);
}

.navbar-light .navbar-text a,
.navbar-light .navbar-text a:hover,
.navbar-light .navbar-text a:focus {
  color: rgba(0, 0, 0, 0.9);
}

/* 
 * Re-declare Bootstrap 5 container responsive max-widths
 * These MUST come after all other rules to override .row > * { max-width: 100% }
 */
@media (min-width: 576px) {

  .container,
  .container-md,
  .container-sm {
    max-width: 540px;
  }
}

@media (min-width: 768px) {

  .container,
  .container-md,
  .container-sm {
    max-width: 720px;
  }
}

@media (min-width: 992px) {

  .container,
  .container-md,
  .container-sm {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {

  .container,
  .container-md,
  .container-sm {
    max-width: 1140px;
  }
}

@media (min-width: 1260px) {
  .container,
  .container-md,
  .container-sm {
    max-width: 1200px;
  }
}