/* 全局文章容器 */
.article-container {
  max-width: 960px;
  margin: auto;
  padding: 0 1em;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.8;
}

/* 文章标题 */
.article-container header h1 {
  font-size: 2em;
  margin: 1em 0;
  color: #222;
}

/* 正文区段和图片自适应 */
.article-container .content {
  font-size: 1.1em;
  color: #444;
}
.article-container .content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 20px auto;
}

/* 瀑布流布局 */
#waterfall {
  column-count: 2;
  column-gap: 1em;
  max-width: 960px;
  margin: 40px auto;
}

/* 瀑布流条目 */
.post-item {
  break-inside: avoid;
  margin-bottom: 1em;
  position: relative;
}
.post-item img {
  width: 100%;
  border-radius: 4px;
  display: block;
}
.post-item .title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  box-sizing: border-box;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 10px;
  font-size: 1em;
  line-height: 1.2;
  word-break: break-word;
}

/* 加载提示 */
#loading {
  text-align: center;
  padding: 20px;
  color: #666;
  display: none;
}

/* 移动端单列、适配 */
@media (max-width: 600px) {
  #waterfall {
    column-count: 1;
  }
  .post-item .title {
    font-size: 1.1em;
    padding: 12px;
  }
}
.btn-next-page {
  display: block;
  width: 200px;               /* 你可以根据需要调整宽度 */
  margin: 2em auto;           /* 居中并与上下留白 */
  padding: 1em 0;             /* 上下内边距，让按钮更大 */
  background: #0077cc;        /* 典型蓝色 */
  color: #fff;
  text-align: center;
  font-size: 1.2em;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s;
}
.btn-next-page:hover {
  background: #005fa3;        /* 悬停时更深一点的蓝 */
}
/* Quiz 容器 */
  #quiz-container {
    background: #f9f9f9;
    border-radius: 8px;
    padding: 16px;
    margin: 20px 0;
  }
  #quiz-container p:first-child {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
  }

 /* Quiz 按钮 */
  .quiz-btn {
    display: block;
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 10px;
    border: 2px solid #007bff;
    border-radius: 6px;
    background: #fff;
    color: #007bff;
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: background .2s, color .2s;
  }
  .quiz-btn:hover {
    background: #e9f5ff;
    color: #0056b3;
  }
  #quiz-result {
    margin-top: 12px;
    font-size: 1.1rem;
    font-weight: 600;
  }

   /* 阅读进度条 */
    #reading-progress{position:fixed;top:0;left:0;width:100%;height:4px;background:rgba(0,0,0,0.1);z-index:9999}
    #reading-progress-bar{width:0;height:100%;background:#007bff;transition:width .1s}
    body{padding-top:4px;font-family:Arial, sans-serif;}

    /* 响应式布局 */
    .article-container{max-width:960px;margin:auto;padding:0 1em;line-height:1.6;}
    @media (max-width:600px) {
      .article-container {padding:0 0.8em;}
      .article-container h1 {font-size:1.6em;}
    }
    @media (min-width:601px) {
      .article-container h1 {font-size:2.4em;}
    }


    .post-category {
  font-size: 16px;
  color: #333;
  padding: 8px 12px;
  border-left: 4px solid #ff4081;
  background-color: #f9f9f9;
}