/* 整个教程扩展卡片区域 */
    .tutorial-extension {
      background: #faebd7;
      padding: 24px 16px 16px;
      margin: 0 auto;
      max-width: 1200px;
    }
    .tutorial-extension .section-title {
      font-size: 1.5rem;
      font-weight: 600;
      color: #2c3e50;
      margin-bottom: 1.2rem;
      padding-left: 8px;
      border-left: 5px solid #4a94d8;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tutorial-extension .section-title i {
      font-style: normal;
      font-size: 1.8rem;
    }
    /* 卡片网格：每行3个，响应式自动调整 */
    .tutorial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 8px;
    }
    /* 卡片设计：简洁微质感 */
    .tutorial-card {
      background: #fff9e6;
      border: 1px solid #e9ecf0;
      border-radius: 16px;
      padding: 18px 14px 14px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      text-decoration: none;
      color: #333;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      position: relative;
      overflow: hidden;
    }
    .tutorial-card:hover {
      background: #ffffff;
      border-color: #b8d4fe;
      box-shadow: 0 10px 22px rgba(74, 148, 216, 0.12);
      transform: translateY(-3px);
      text-decoration: none;
      color: #1e293b;
    }
    /* 卡片头部图标与标签 */
    .card-icon-area {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .icon-badge {
      background: #eef5ff;
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
      color: #2563eb;
      flex-shrink: 0;
      transition: background 0.2s;
    }
    .tutorial-card:hover .icon-badge {
      background: #dbeafe;
    }
    .card-tag {
      background: #fff;
      border: 1px solid #dce3eb;
      border-radius: 30px;
      padding: 4px 14px;
      font-size: 0.75rem;
      font-weight: 600;
      color: #4b5563;
      letter-spacing: 0.3px;
      text-transform: uppercase;
      margin-left: auto;
    }
    .card-title {
      font-weight: 650;
      font-size: 1.15rem;
      margin: 6px 0 6px;
      color: #0b1e33;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .card-title .new-badge {
      background: #dc3545;
      color: white;
      font-size: 0.7rem;
      padding: 2px 10px;
      border-radius: 20px;
      font-weight: 500;
      margin-left: 8px;
    }
    .card-desc {
      font-size: 0.9rem;
      color: #5f6b7a;
      line-height: 1.5;
      margin-bottom: 16px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px dashed #e2e8f0;
      padding-top: 12px;
      margin-top: 4px;
      font-size: 0.8rem;
      color: #6b7280;
    }
    .learn-more {
      background: transparent;
      border: none;
      color: #2563eb;
      font-weight: 600;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 4px 8px;
      border-radius: 20px;
      transition: background 0.2s;
      cursor: pointer;
    }
    .tutorial-card:hover .learn-more {
      background: #eef4ff;
    }
    .difficulty {
      display: flex;
      align-items: center;
      gap: 4px;
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 0.75rem;
    }
    /* 手机端适配：单列或双列 */
    @media (max-width: 768px) {
      .tutorial-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
      }
      .tutorial-card {
        padding: 14px 10px 12px;
      }
      .icon-badge {
        width: 40px;
        height: 40px;
        font-size: 22px;
      }
    }
    @media (max-width: 480px) {
      .tutorial-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
    }
    /* 与原有两大教程区域自然衔接 */
    .divider-light {
      margin: 10px 0 18px;
      border-top: 1px solid #f0e7db;
    }


    /* 公告与故事大容器 */
    .community-news-section {
      max-width: 1200px;
      margin: 30px auto 20px;
      padding: 0 16px;
    }
    .section-header {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }
    .section-header h3 {
      font-weight: 700;
      color: #1e293b;
      font-size: 1.6rem;
      border-left: 5px solid #dc3545;
      padding-left: 14px;
      margin: 0;
    }
    .view-all {
      color: #2563eb;
      font-weight: 600;
      font-size: 0.9rem;
      text-decoration: none;
      background: #f0f4ff;
      padding: 6px 18px;
      border-radius: 30px;
      transition: 0.2s;
    }
    .view-all:hover {
      background: #dbeafe;
      text-decoration: none;
      color: #1e3a8a;
    }
    /* 双列布局：公告在左，故事在右 */
    .news-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    /* 通用卡片风格 */
    .notice-panel, .story-panel {
      background: #fff9e6;
      border-radius: 20px;
      box-shadow: 0 8px 22px rgba(0,0,0,0.04);
      padding: 20px 18px;
      border: 1px solid #f0e7db;
      transition: all 0.2s;
    }
    .notice-panel:hover, .story-panel:hover {
      box-shadow: 0 12px 26px rgba(0,0,0,0.07);
      border-color: #e2d5c0;
    }
    .panel-title {
      font-weight: 700;
      font-size: 1.25rem;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: #2c3e50;
      border-bottom: 2px solid #f5e9dc;
      padding-bottom: 12px;
    }
    .panel-title i {
      font-style: normal;
      font-size: 1.6rem;
    }
    /* 公告列表样式 */
    .notice-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .notice-item {
      display: flex;
      align-items: baseline;
      gap: 12px;
      padding: 12px 6px;
      border-bottom: 1px dashed #f0e7db;
      transition: background 0.2s;
      text-decoration: none;
      color: #333;
      border-radius: 8px;
    }
    .notice-item:last-child {
      border-bottom: none;
    }
    .notice-item:hover {
      background: #fef9f0;
      text-decoration: none;
      color: #1e293b;
    }
    .notice-badge {
      background: #dc3545;
      color: white;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 20px;
      white-space: nowrap;
      letter-spacing: 0.3px;
      flex-shrink: 0;
    }
    .notice-date {
      font-size: 0.75rem;
      color: #8a8f9a;
      margin-left: auto;
      white-space: nowrap;
      font-weight: 500;
    }
    .notice-text {
      flex: 1;
      font-weight: 500;
      font-size: 0.95rem;
      line-height: 1.4;
      color: #2d3748;
    }
    /* 成员故事卡片 */
    .story-card {
      display: flex;
      gap: 14px;
      padding: 12px 4px;
      border-bottom: 1px solid #f5eadb;
      align-items: flex-start;
      text-decoration: none;
      color: #2d3748;
      border-radius: 10px;
      transition: 0.2s;
    }
    .story-card:last-child {
      border-bottom: none;
    }
    .story-card:hover {
      background: #faf7f2;
      text-decoration: none;
      color: #0b1e33;
    }
    .avatar {
      width: 48px;
      height: 48px;
      background: #eef2ff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 600;
      color: #2563eb;
      flex-shrink: 0;
      background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
    }
    .story-content {
      flex: 1;
    }
    .story-author {
      font-weight: 700;
      font-size: 0.95rem;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 4px;
    }
    .story-role {
      font-size: 0.7rem;
      background: #f1f5f9;
      padding: 2px 10px;
      border-radius: 14px;
      color: #475569;
      font-weight: 500;
    }
    .story-excerpt {
      font-size: 0.85rem;
      color: #4b5563;
      line-height: 1.5;
      margin-bottom: 4px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .story-meta {
      font-size: 0.7rem;
      color: #9ca3af;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .highlight-story {
      background: #fff9ed;
      border-left: 4px solid #f59e0b;
      padding-left: 12px;
      border-radius: 0 10px 10px 0;
    }
    /* 响应式 */
    @media (max-width: 768px) {
      .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
    }