/* 教程详情页：三栏 + sticky 目录 + 移动端折叠 */

.linkon-course-detail.im4 {
  align-items: flex-start;
  gap: 0;
}

.linkon-course-detail .linkon-toc-sticky {
  position: sticky;
  top: calc(var(--head, 80px) + 12px);
  max-height: calc(100vh - var(--head, 80px) - 24px);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.linkon-course-detail .linkon-toc-link.level-2 {
  padding-left: 1.8vw;
  font-size: 0.95em;
}

.linkon-course-detail .linkon-toc-link.level-3 {
  padding-left: 2.6vw;
  font-size: 0.9em;
}

.linkon-course-detail .linkon-toc-link.level-4,
.linkon-course-detail .linkon-toc-link.level-5,
.linkon-course-detail .linkon-toc-link.level-6 {
  padding-left: 3.4vw;
  font-size: 0.85em;
  opacity: 0.92;
}

.linkon-course-detail .linkon-article-head {
  margin-bottom: 1.5em;
}

.linkon-course-detail .linkon-article-head h1 {
  margin-bottom: 0.5em;
}

.linkon-course-detail .linkon-article-author {
  gap: 10px;
  color: #666;
}

.linkon-course-detail .linkon-article-author img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.linkon-course-detail .empty h2,
.linkon-course-detail .empty h3,
.linkon-course-detail .empty h4 {
  scroll-margin-top: calc(var(--head, 80px) + 16px);
}

.linkon-comment-btn {
  display: block;
  width: calc(100% - 2.5vw);
  margin: 1.2vw auto 0;
  padding: 0.72vw 1vw;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fff;
  color: #333;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.linkon-comment-btn:hover {
  background: #f5f5f5;
  border-color: #C9FF85;
}

.linkon-comment-count {
  margin-left: 4px;
  color: #888;
}

/* 正文默认禁止选中/复制，仅可复制提示词区块例外 */
.linkon-course-detail .empty {
  -webkit-user-select: none;
  user-select: none;
}

.linkon-course-detail .empty .copy:not(.is-masked),
.linkon-course-detail .empty .copy:not(.is-masked) * {
  -webkit-user-select: text;
  user-select: text;
}

.copy.is-masked,
.linkon-prompt-lock.is-masked {
  cursor: pointer;
  min-height: 3.2em;
  overflow: hidden;
}

.copy.is-masked .linkon-prompt-inner,
.linkon-prompt-lock.is-masked .linkon-prompt-inner {
  filter: blur(8px);
  -webkit-user-select: none;
  user-select: none;
  pointer-events: none;
}

.linkon-prompt-lock.is-masked .linkon-prompt-inner.prompt-contet,
.copy.is-masked .linkon-prompt-inner.prompt-contet {
  padding: 12px 16px;
  color: transparent;
  text-shadow: 0 0 12px rgba(0, 0, 0, 0.45);
}

@media (max-width: 768px) {
  .linkon-course-detail.im4 {
    flex-direction: column;
    padding-top: 0;
  }

  .linkon-course-detail .empty {
    width: 100%;
    margin: 0;
    padding: 0 16px 40px;
    order: 2;
  }

  .linkon-course-detail .linkon-detail-aside {
    width: 100%;
    order: 3;
    padding: 0 16px 32px;
  }

  .linkon-course-detail .linkon-detail-aside .im4-slide {
    position: static;
    width: 100%;
  }

  .im4-title-hash-mulu.mob {
    display: block;
    position: sticky;
    top: var(--head, 64px);
    z-index: 20;
    width: calc(100% - 32px);
    margin: 8px 16px 12px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid #ddd;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  }
}