* { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: #333;
      background: #f2f3f5;
    }

    /* ===== 移动端顶栏 ===== */
    .mobile-nav-bar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 900;
      background: #e6432d;
      color: #fff;
      padding: 10px 16px;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-logo .site-name { font-size: 18px; font-weight: 700; }
    .mobile-nav-toggle {
      background: rgba(255,255,255,0.2);
      border: none;
      color: #fff;
      font-size: 18px;
      width: 40px;
      height: 40px;
      border-radius: 8px;
      cursor: pointer;
    }

    /* ===== 侧边栏 ===== */
    .sidebar {
      position: fixed;
      top: 0; left: 0;
      width: 240px;
      height: 100vh;
      background: #fff;
      box-shadow: 2px 0 12px rgba(0,0,0,0.06);
      padding: 24px 16px;
      overflow-y: auto;
      z-index: 1000;
      transition: transform 0.25s ease;
    }
    .logo .site-name { font-size: 22px; color: #e6432d; }
    .logo p { font-size: 13px; color: #999; margin: 4px 0 20px; }
    .nav-menu .nav-item { margin-bottom: 4px; }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      border-radius: 8px;
      text-decoration: none;
      color: #333;
      font-size: 15px;
    }
    .nav-link:hover, .nav-link.active { background: #fff1ee; color: #e6432d; }
    .submenu {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
      padding-left: 34px;
    }
    .submenu.active { max-height: 400px; }
    .submenu .nav-link { font-size: 14px; color: #666; padding: 8px 14px; }
    .contact-card {
      margin-top: 24px;
      background: #fff8f6;
      border-radius: 12px;
      padding: 14px;
    }
    .contact-info h3 { font-size: 15px; margin-bottom: 4px; }
    .contact-info p { font-size: 12px; color: #999; line-height: 1.6; }

    /* ===== 主内容区 ===== */
    .main-content { margin-left: 240px; padding: 24px; }

    /* 横幅 */
    .banner {
      background: linear-gradient(135deg, #e6432d, #ff7a45);
      border-radius: 16px;
      color: #fff;
      padding: 36px 28px;
    }
    .banner-content h1 { font-size: 26px; line-height: 1.4; margin-bottom: 10px; }
    .banner-content > p { font-size: 15px; opacity: 0.92; margin-bottom: 14px; }
    .banner-content .meta { font-size: 13px; opacity: 0.85; margin-bottom: 18px; }
    .trigger-btn {
      display: inline-block;
      background: #fff;
      color: #e6432d;
      font-weight: 600;
      font-size: 14px;
      text-decoration: none;
      padding: 10px 22px;
      border-radius: 999px;
      border: none;
      cursor: pointer;
    }

    /* 面包屑（新增小组件） */
    .breadcrumb { font-size: 14px; color: #666; padding: 14px 4px; }
    .breadcrumb a { color: #007aff; text-decoration: none; }
    .breadcrumb span { margin: 0 6px; }

    /* 通用区块 */
    .section {
      background: #fff;
      border-radius: 14px;
      padding: 24px;
      margin-bottom: 20px;
    }
    .section-title h2 { font-size: 20px; margin-bottom: 6px; }
    .section-title p { font-size: 14px; color: #999; margin-bottom: 18px; }
    .services-intro p { font-size: 15px; color: #666; margin-bottom: 16px; }

    /* 九宫格攻略要点 */
    .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-card {
      border: 1px solid #f0f0f0;
      border-radius: 12px;
      padding: 18px;
      background: #fafafa;
    }
    .service-icon {
      width: 44px; height: 44px;
      border-radius: 10px;
      background: #fff1ee;
      color: #e6432d;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 10px;
    }
    .service-card h3 { font-size: 15px; margin-bottom: 6px; }
    .service-card p { font-size: 14px; color: #777; line-height: 1.6; }

    /* 图文说明区 */
    .philosophy-content {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 20px;
      align-items: center;
    }
    .philosophy-text h3 { font-size: 17px; margin-bottom: 10px; }
    .philosophy-text p { font-size: 15px; color: #555; margin-bottom: 10px; }
    .image-container { position: relative; }
    .responsive-image {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 12px;
      background: #eee;
    }

    /* 六宫格特点 */
    .advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .advantage-card {
      display: flex;
      gap: 12px;
      border: 1px solid #f0f0f0;
      border-radius: 12px;
      padding: 16px;
    }
    .advantage-icon { color: #e6432d; font-size: 20px; }
    .advantage-text h3 { font-size: 15px; margin-bottom: 4px; }
    .advantage-text p { font-size: 14px; color: #777; line-height: 1.6; }

    /* 实测记录卡片 */
    .cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .case-card {
      border: 1px solid #f0f0f0;
      border-radius: 12px;
      overflow: hidden;
      background: #fff;
    }
    .case-image {
      height: 120px;
      background: linear-gradient(135deg, #ffe0da, #fff3f0);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #e6432d;
      font-size: 32px;
    }
    .case-content { padding: 16px; }
    .case-content h3 { font-size: 15px; margin-bottom: 6px; }
    .case-content > p { font-size: 14px; color: #777; }
    .case-stats { display: flex; gap: 10px; margin-top: 12px; }
    .stat {
      flex: 1;
      background: #fafafa;
      border: 1px solid #f0e6e4;
      border-radius: 8px;
      text-align: center;
      padding: 8px 4px;
    }
    .stat-value { font-size: 15px; font-weight: 700; color: #e6432d; }
    .stat-label { font-size: 12px; color: #999; }
    /* 实测记录表格（新增，替代卡片形式，移动端可横向滑动） */
    .record-table { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .record-table table {
      width: 100%;
      min-width: 540px;
      border-collapse: collapse;
      font-size: 14px;
    }
    .record-table th, .record-table td {
      padding: 10px 12px;
      text-align: left;
      border-bottom: 1px solid #f0f0f0;
      vertical-align: top;
    }
    .record-table th {
      background: #fff1ee;
      color: #e6432d;
      font-weight: 600;
      white-space: nowrap;
    }
    .record-table tr:last-child td { border-bottom: none; }
    .record-table td:first-child { white-space: nowrap; }
    .record-table .tag-ok { color: #28a745; font-weight: 500; }
    .record-table .tag-end { color: #999; }

    /* 教程列表 */
    .tutorials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .tutorial-card {
      display: block;
      text-decoration: none;
      color: #333;
      border: 1px solid #f0f0f0;
      border-radius: 12px;
      padding: 16px;
    }
    .tutorial-card:hover { border-color: #e6432d; }
    .tutorial-card-hasimg { display: flex; gap: 12px; align-items: flex-start; }
    .tutorial-thumb { flex: 0 0 96px; width: 96px; height: 72px; border-radius: 8px; overflow: hidden; background: #f5f5f5; }
    .tutorial-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
    .tutorial-content { flex: 1; min-width: 0; }
    .tutorial-content h3 { font-size: 15px; margin-bottom: 6px; }
    .tutorial-content h3 a { color: inherit; text-decoration: none; }
    .tutorial-content p { font-size: 14px; color: #777; margin-bottom: 8px; }
    .tutorial-meta { font-size: 12px; color: #bbb; display: flex; gap: 12px; }

    /* FAQ 手风琴 */
    .faq-item {
      border: 1px solid #f0f0f0;
      border-radius: 10px;
      margin-bottom: 10px;
      overflow: hidden;
    }
    .faq-question {
      padding: 14px 16px;
      cursor: pointer;
      font-weight: 500;
      font-size: 15px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-question:hover { background: #fafafa; }
    .faq-question i { color: #e6432d; transition: transform 0.2s; }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
      padding: 0 16px;
    }
    .faq-answer.active { max-height: 600px; padding: 0 16px 14px; }
    .faq-answer p { font-size: 14px; color: #555; }

    /* FAQ 答案内的要点列表（直答+要点两段式） */
    .faq-answer.active { max-height: 1000px; }
    .faq-answer ul {
      list-style: none;
      margin: 8px 0 0;
      padding: 0;
    }
    .faq-answer li {
      position: relative;
      padding-left: 16px;
      margin-bottom: 6px;
      font-size: 13px;
      line-height: 1.6;
      color: #666;
    }
    .faq-answer li:last-child { margin-bottom: 0; }
    .faq-answer li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 8px;
      width: 6px;
      height: 6px;
      border-radius: 2px;
      background: #e6432d;
      opacity: 0.75;
    }
    .faq-answer li strong { color: #e6432d; }

    /* 长文知识区 */
    .knowledge-content h2 { font-size: 18px; margin: 22px 0 10px; }
    .knowledge-content h2:first-child { margin-top: 0; }
    .knowledge-content p { font-size: 15px; color: #555; margin-bottom: 12px; }

    /* 正文要点列表（维权步骤、避坑清单等；仅直属子级，不影响 FAQ 内列表） */
    .knowledge-content > ul {
      list-style: none;
      margin: 12px 0 16px;
      padding: 12px 16px;
      background: #fdf8f7;
      border: 1px solid #f0e6e4;
      border-radius: 8px;
    }
    .knowledge-content > ul li {
      position: relative;
      padding-left: 18px;
      margin-bottom: 8px;
      font-size: 14px;
      line-height: 1.7;
      color: #555;
    }
    .knowledge-content > ul li:last-child { margin-bottom: 0; }
    .knowledge-content > ul li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 9px;
      width: 6px;
      height: 6px;
      border-radius: 2px;
      background: #e6432d;
      opacity: 0.75;
    }
    .knowledge-content > ul li strong { color: #e6432d; }
    .note {
      background: #fff3cd;
      border-left: 4px solid #ffc107;
      padding: 12px;
      margin-top: 16px;
      border-radius: 4px;
      font-size: 14px;
    }

    /* 首屏速览卡（新增） */
    .quick-facts dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; }
    .quick-facts dt { font-weight: 500; font-size: 15px; white-space: nowrap; }
    .quick-facts dd { font-size: 15px; color: #e6432d; text-align: right; }

    /* 分步教程（新增） */
    .step-item { margin-bottom: 22px; }
    .step-item h3 { font-size: 17px; margin-bottom: 8px; }
    .step-item > p { font-size: 15px; color: #555; margin-bottom: 10px; }
    figure { margin: 12px 0; }
    figure img {
      display: block;
      margin: 0 auto;
      height: auto; /* 配合 width/height 属性消除布局偏移 */
      border-radius: 10px;
      background: #eee;
    }
    figcaption { font-size: 13px; color: #999; text-align: center; margin-top: 6px; }

    /* 作者卡（新增） */
    .author-box {
      display: flex;
      gap: 14px;
      align-items: flex-start;
      background: #fafafa;
      border: 1px solid #f0f0f0;
      border-radius: 12px;
      padding: 16px;
      margin-bottom: 18px;
    }
    .author-box img {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: #eee;
      flex-shrink: 0;
    }
    .author-box .author-name { font-size: 15px; font-weight: 600; }
    .author-box .author-role { font-size: 12px; color: #e6432d; margin: 2px 0 6px; }
    .author-box p { font-size: 14px; color: #777; margin: 0; }
    .author-box a { color: #007aff; text-decoration: none; }

    /* 更新日志（新增） */
    .update-log { list-style: none; }
    .update-log li {
      display: flex;
      gap: 12px;
      font-size: 14px;
      color: #555;
      padding: 8px 0;
      border-bottom: 1px dashed #eee;
    }
    .update-log li:last-child { border-bottom: none; }
    .update-log time { color: #999; white-space: nowrap; }

    /* 官方核实渠道（新增） */
    .official-source {
      background: #f0f7ff;
      border-left: 4px solid #007aff;
      padding: 12px;
      border-radius: 4px;
      font-size: 14px;
      margin-top: 16px;
    }
    .official-source ul { padding-left: 18px; margin-top: 6px; }
    .official-source li { margin-bottom: 4px; color: #555; }

    /* 页脚 */
    footer {
      background: #2b2b2b;
      color: rgba(255,255,255,0.75);
      border-radius: 14px;
      padding: 24px;
      font-size: 13px;
      line-height: 2;
    }
    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 20px;
      margin-bottom: 16px;
    }
    .footer-column h3 { color: #fff; font-size: 15px; margin-bottom: 8px; }
    .footer-links { list-style: none; }
    .footer-links a { color: rgba(255,255,255,0.75); text-decoration: none; display: block; padding: 2px 0; }
    .footer-links a:hover { color: #fff; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.15);
      padding-top: 12px;
      text-align: center;
    }
    .footer-bottom a { color: rgba(255,255,255,0.75); }

    /* ===== 移动端适配 ===== */
    @media (max-width: 900px) {
      .mobile-nav-bar { display: flex; }
      .sidebar { transform: translateX(-100%); }
      .sidebar.active { transform: translateX(0); }
      .main-content { margin-left: 0; padding: 12px; }
      .services-grid, .advantages-grid, .cases-grid { grid-template-columns: 1fr 1fr; }
      .philosophy-content { grid-template-columns: 1fr; }
      .footer-content { grid-template-columns: 1fr; }
    }
    @media (max-width: 480px) {
      .services-grid, .advantages-grid, .cases-grid, .tutorials-grid { grid-template-columns: 1fr; }
      .banner-content h1 { font-size: 20px; }
    }
    @media (max-width: 1439px) {
  figure img {
    display: block;
    width: 70%;
    height: auto;
    margin: 0 auto;
    border-radius: 10px;
    background: #eee;
  }
}

/* ===== 文章正文表格（生成文章直出的裸 table，无需包裹 div） ===== */
.knowledge-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
  line-height: 1.6;
  color: #333;
  background: #fff;
  border: 1px solid #f0e6e4;
  border-radius: 8px;
  overflow: hidden;
}
.knowledge-content th,
.knowledge-content td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #f5ecea;
  vertical-align: top;
}
.knowledge-content thead th,
.knowledge-content tr:first-child th {
  background: #fff1ee;
  color: #e6432d;
  font-weight: 600;
  white-space: nowrap;
}
.knowledge-content tbody tr:nth-child(even) { background: #fdf8f7; }
.knowledge-content tbody tr:hover { background: #fff6f4; }
.knowledge-content tr:last-child td { border-bottom: none; }
.knowledge-content td:first-child { font-weight: 500; white-space: nowrap; }

/* 小屏：表格可横向滑动，字号略缩 */
@media (max-width: 768px) {
  .knowledge-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 13px;
  }
  .knowledge-content th,
  .knowledge-content td { padding: 8px 10px; }
}