body {
      margin: 0;
      padding: 0;
      background: #f7f8fa;
      font-family: "Noto Serif SC", Georgia, serif;
      color: #222;
    }

    .container {
      max-width: 800px;
      margin: 60px auto;
      background: #fff;
      padding: 60px 50px;
      border-radius: 12px;
      box-shadow: 0 10px 28px rgba(0, 0, 0, 0.05);
    }

    .title {
      font-size: 36px;
      font-weight: bold;
      line-height: 1.4;
      margin-bottom: 25px;
    }

    .meta {
      display: flex;
      align-items: center;
      gap: 15px;
      font-size: 14px;
      color: #666;
      border-bottom: 1px solid #e0e0e0;
      padding-bottom: 15px;
      margin-bottom: 40px;
    }

    .meta img {
      width: 42px;
      height: 42px;
      border-radius: 50%;
    }

    .meta .info {
      display: flex;
      flex-direction: column;
    }

    .meta .author {
      font-weight: 600;
      color: #333;
    }

    .stats {
      font-size: 13px;
      color: #888;
      margin-top: 6px;
    }

    .tags {
      margin-bottom: 30px;
    }

    .tag {
      display: inline-block;
      background: #e5ecf5;
      color: #336699;
      padding: 4px 10px;
      font-size: 13px;
      border-radius: 14px;
      margin-right: 10px;
    }

    .content p {
      font-size: 18px;
      line-height: 1.8;
      margin-bottom: 24px;
      text-align: justify;
    }

    .content img {
      width: 100%;
      border-radius: 10px;
      margin: 40px 0;
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
    }

    blockquote {
      border-left: 4px solid #0077b6;
      background: #f2f6fa;
      padding-left: 20px;
      font-style: italic;
      color: #444;
      margin: 40px 0;
      padding: 18px;
      border-radius: 6px;
    }

    .author-bio {
      border-top: 1px solid #eee;
      margin-top: 60px;
      padding-top: 30px;
      font-size: 15px;
      color: #555;
    }

    .related {
      margin-top: 40px;
    }

    .related h3 {
      font-size: 18px;
      margin-bottom: 16px;
    }

    .related ul {
      list-style: none;
      padding-left: 0;
    }

    .related li {
      margin-bottom: 10px;
    }

    .related a {
      text-decoration: none;
      color: #0056b3;
    }

    .related a:hover {
      text-decoration: underline;
    }

    @media (max-width: 768px) {
      .container {
        padding: 40px 24px;
        margin: 30px 16px;
      }

      .title {
        font-size: 28px;
      }

      .content p {
        font-size: 16px;
      }
    }
    
.sponsor-section {
  margin-top: 60px;
  padding: 30px 24px;
  background: #f4f6f9;
  border-radius: 12px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
  position: relative;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.sponsor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.ad-label {
  background-color: #d72638;
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: bold;
}

.ad-close {
  font-size: 18px;
  color: #999;
  cursor: pointer;
  transition: color 0.3s;
}

.ad-close:hover {
  color: #333;
}

.sponsor-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: #222;
  text-align: center;
}

.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
}

.sponsor-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.sponsor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.sponsor-card img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  margin-bottom: 10px;
}

.sponsor-name {
  font-size: 15px;
  color: #333;
  font-weight: 500;
  text-align: center;
}


/* 顶部广告 */
.top-banner-ad {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #1a1a1a;
  color: #fff;
  padding: 14px 20px;
  font-size: 15px;
  text-align: center;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  animation: slideDown 0.4s ease-out;
  box-sizing: border-box;
}

.top-banner-ad a {
  color: #4fc3f7;
  text-decoration: none;
  font-weight: 600;
  margin-left: 8px;
}

.top-banner-ad a:hover {
  text-decoration: underline;
}

.banner-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.ad-label {
  background-color: #d72638;
  color: #fff;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: bold;
}

.banner-close {
  position: absolute;
  right: 10px;
  font-size: 20px;
  cursor: pointer;
  color: #aaa;
  transition: color 0.3s;
  user-select: none;
}

.banner-close:hover {
  color: #fff;
}

/* 主体内容容器，顶部留白避免被广告遮挡 */
.container {
  margin-top: 80px;
  transition: margin-top 0.3s ease;
}

/* 动画效果 */
@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* --- 移动端适配 --- */
@media (max-width: 600px) {
  .top-banner-ad {
    padding: 12px 15px;
    font-size: 14px;
  }
  
  .banner-close {
    font-size: 24px;
    right: 8px;
  }
  
  .container {
    margin-top: 70px;
  }

  .banner-inner {
    flex-direction: column;
    gap: 6px;
  }

  .ad-label {
    font-size: 11px;
    padding: 2px 5px;
  }
  
  .top-banner-ad a {
    margin-left: 0;
    word-break: break-word;
  }
}

/* 版权 */
.page-footer {
  background-color: #222;
  color: #bbb;
  font-size: 13px;
  padding: 20px 15px;
  text-align: center;
  margin-top: 80px;
  user-select: none;
}

.page-footer a {
  color: #4fc3f7;
  text-decoration: none;
}

.page-footer a:hover {
  text-decoration: underline;
}

.footer-container p {
  margin: 6px 0;
  line-height: 1.5;
}