nav .nav {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.modebar a.mode {
  text-decoration: none;
}
.text-button[href],
.primary[href] {
  text-decoration: none;
}
.share-status {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: var(--text);
  color: var(--surface);
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 18px #17201c20;
  font-size: 13px;
}
#share-dialog {
  width: min(460px, calc(100% - 32px));
  max-height: 90vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  padding: 28px;
}
#share-dialog::backdrop {
  background: #17201c70;
}
#share-dialog .dialog-close {
  float: right;
}
#share-dialog h2 {
  font-size: 20px;
}
#share-dialog label {
  display: block;
  font-size: 12px;
  margin-top: 18px;
}
#share-link {
  display: block;
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  margin: 8px 0 16px;
}
#share-dialog-status {
  margin-top: 12px;
}
.course-outline {
  margin-top: 24px;
}
.course-outline ol {
  padding-left: 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}