/*
 * Globals
 */

/* Custom default button */
.btn-dark,
.btn-dark:hover,
.btn-dark:focus {
  color: white;
  text-shadow: none; /* 避免文字模糊 */
}

/*
 * Base structure
 */

body {
  background-color: white;
  color: black;
  box-shadow: none; /* 移除深色背景的阴影 */
}

.cover-container {
  max-width: 60em;
}

/*
 * Header
 */
.nav-masthead .nav-link {
  color: rgba(0, 0, 0, 0.7);
  border-bottom: .25rem solid transparent;
}

.nav-masthead .nav-link:hover,
.nav-masthead .nav-link:focus {
  border-bottom-color: rgba(0, 0, 0, 0.5);
}

.nav-masthead .nav-link + .nav-link {
  margin-left: 1rem;
}

.nav-masthead .active {
  color: black;
  border-bottom-color: black;
}