.main-article-container {
  background-color: rgb(var(--color-background));
}
.main-article__title {
  padding-block-end: 20px;
}
.main-article__cover-image {
  aspect-ratio: var(--aspect-ratio);
  margin-block-end: 20px;
  overflow: hidden;
  border-radius: var(--border-radius);
}
.main-article__cover-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.main-article__info {
  display: flex;
  gap: 10px;
  padding-block-end: 20px;
  margin-block-end: 20px;
  color: rgb(var(--color-light-text));
  border-block-end: 1px solid rgb(221 221 221 / 100%);
}
.main-article__button-back {
  padding-block-end: 40px;
}
.main-article__button-back svg {
  transform: rotate(90deg);
}
.main-article__content {
  padding-block: 40px;
}
.main-article__comment-title {
  padding-block: 40px;
}
.main-article__comment-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-block-end: 40px;
}
.main-article__comment-item {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding: 30px;
  border: 1px solid #ddd;
  border-radius: 4px;
}
.main-article__comment-info {
  display: flex;
  gap: 52px;
  justify-content: end;
}
.main-article__comment-fields {
  display: flex;
  gap: 20px;
}
.main-article .text-area + .field__label {
  inset-block-start: 20px;
}
.main-article__share {
  padding-block: 40px 80px;
}
.main-article__comment-submit {
  display: flex;
  justify-content: center;
}
.main-article__comment-form {
  padding-block-start: 40px;
}
.main-article__comment-form-title {
  margin-block-end: 40px;
}
.main-article__comment-tip {
  padding-block: 40px;
}
.main-article .field__info {
  padding-block-end: 40px;
}
@media (max-width: 959px) {
  .main-article__content {
    margin-block-end: 20px;
  }

  .main-article__share {
    margin-block-end: 40px;
  }

  .main-article__comment-title {
    margin-block-end: 20px;
  }

  .main-article__comment-content {
    padding: 0;
  }

  .main-article__comment-form-title {
    margin-block-end: 20px;
  }

  .main-article__comment-fields {
    display: block;
  }

  .main-article__comment-tip {
    padding-block-start: 20px;
  }
}

/* --- 导航容器核心样式 --- */
#toc-container {
  background: #f9f9f9;
  border-radius: 8px;
  overflow: hidden; /* 必须：隐藏动画过程中溢出的内容 */
  height: 0; /* 初始高度为0，防止占位 */
  opacity: 0; /* 初始透明 */
  transition:
    height 0.4s ease-out,
    opacity 0.4s ease-in; /* 核心动画 */
  margin-bottom: 0; /* 初始无间距 */
}

/* 激活状态（JS添加此列） */
#toc-container.is-visible {
  opacity: 1;
  border: 1px solid #ddd; /* 展开后显示边框 */
  padding-left: 20px;
  padding-top: 20px;
}

/* 列表样式 */
.toc-list {
  padding: 20px;
  margin: 0;
  list-style: none;
}
.toc-list li {
  margin-bottom: 8px;
}
.toc-list a {
  text-decoration: underline;
  color: #333;
  font-size: 14px;
  display: block;
  padding: 5px 10px;
  border-radius: 4px;
  transition: background 0.2s;
}
.toc-list a:hover {
  background: #e0e0e0;
}

/* TODO: 暂时兼容旧版h2 a链接后续运营调整完后删除 */
.main-article-container h2 a,
.main-article-container h2 a:hover {
  text-decoration: none;
}

.main-article-container h2 a {
  pointer-events: none;
}