/* 全局重置 & 字体 */
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: "pingfang SC", "helvetica neue", arial, "hiragino sans gb", "microsoft yahei ui", "microsoft yahei", simsun, sans-serif !important;
      background: #fff;
      color: #333;
    }
    a { text-decoration: none; cursor: pointer; }
    a:hover { text-decoration: none; }
    ul, li { list-style: none; padding: 0; margin: 0; }
    img { border: 0; vertical-align: middle; max-width: 100%; height: auto; }

    /* 容器 ljs-container */
    .ljs-container {
      max-width: 1350px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    @media (min-width: 1400px) {
      .ljs-container { padding-left: 0; padding-right: 0; }
    }

    /* 通用间距、标题、小字 */
    .ljs-div {
      padding-top: 90px;
      padding-bottom: 90px;
    }
    .ljs-title {
      font-size: 30px;
      color: #000;
      font-weight: 700;
      text-align: center;
      margin-bottom: 0;
    }
    .ljs-subtitle {
      font-size: 14px;
      color: #666;
      text-align: center;
      margin-top: 16px;
      font-weight: 400;
    }
    .ljs-card, .ljs-btn, .ljs-btn-outline, .ljs-btn-primary {
      border-radius: 10px !important;
    }
    .ljs-btn {
      display: inline-block;
      padding: 0 28px;
      height: 40px;
      line-height: 40px;
      font-size: 16px;
      border-radius: 10px;
      text-align: center;
      transition: all 0.25s ease;
      border: 1px solid #16b8ed;
      background: transparent;
      color: #333;
    }
    .ljs-btn-primary {
      background: #16b8ed;
      color: #fff;
      border-color: #16b8ed;
    }
    .ljs-btn-primary:hover {
      background: #07aadf;
      border-color: #07aadf;
      color: #fff;
    }
    .ljs-btn-outline {
      border-color: #16b8ed;
    }
    .ljs-btn-outline:hover {
      background: #16b8ed;
      color: #fff;
    }
    /* banner */
    .ljs-banner {
      margin-top: 60px;
      background: url("/css/2020/images/ljs_bannerBg.jpg") no-repeat top center;
      height: 504px;
      position: relative;
      overflow: hidden;
    }
    .ljs-banner-inner {
      position: relative;
      height: 100%;
      display: flex;
      align-items: flex-start;
      flex-wrap: wrap;
    }
    .ljs-banner-txt {
      padding-top: 128px;
      flex: 0 0 auto;
      max-width: 55%;
    }
    .ljs-banner-txt h1 {
      font-size: 36px;
      color: #fff;
      font-weight: 700;
    }
    .ljs-banner-txt p {
      width: 550px;
      max-width: 100%;
      font-size: 14px;
      color: #fff;
      line-height: 28px;
      text-align: justify;
      margin: 30px 0;
    }
    .ljs-banner-txt .ljs-btn {
      background: #16b8ed;
      color: #fff;
      border: none;
      width: 120px;
      height: 36px;
      line-height: 36px;
      padding: 0;
      font-size: 16px;
    }
    .ljs-banner-txt .ljs-btn:hover { background: #07aadf; }
    .ljs-banner-img {
      position: absolute;
      top: 0;
      left: 645px;
      width: 564px;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: flex-end;
    }
    .ljs-banner-img img {
      opacity: 0;
      animation: fadeInOut 1s ease-in-out infinite alternate;
      width: 100%;
      max-height: 100%;
      object-fit: contain;
    }
    @keyframes fadeInOut {
      0% { opacity: 0; }
      100% { opacity: 1; }
    }
    .ljs-nav-bg {
      position: absolute;
      bottom: 0;
      width: 100%;
      height: 80px;
      background: rgba(0,0,0,0.7);
      z-index: 1;
    }
    .ljs-nav {
      position: absolute;
      bottom: 0;
      width: 100%;
      height: 80px;
      z-index: 2;
    }
    .ljs-nav-list {
      display: flex;
      justify-content: flex-end;
      align-items: center;
      height: 100%;
      gap: 60px;
    }
    .ljs-nav-list a {
      color: #fff;
      font-size: 18px;
      transition: color 0.2s;
    }
    .ljs-nav-list a:hover { color: #07aadf; }
    @media (max-width: 992px) {
      .ljs-nav-list { gap: 30px; flex-wrap: wrap; justify-content: center; }
      .ljs-nav-list a { font-size: 15px; }
      .ljs-banner-txt p { width: 100%; }
      .ljs-banner-txt { max-width: 100%; padding-top: 60px; }
      .ljs-banner-img { position: relative; width: 100%; max-width: 100%; height: auto; margin-top: 20px; justify-content: center; }
      .ljs-banner { height: auto; padding-bottom: 30px; }
      .ljs-nav { position: relative; height: auto; margin-top: 20px; }
      .ljs-nav-bg { display: none; }
      .ljs-banner-inner { flex-direction: column; }
    }
    @media (max-width: 576px) {
      .ljs-banner-txt h1 { font-size: 28px; }
      .ljs-banner-txt p { font-size: 13px; }
    }

    /* 产品优势 卡片grid */
    .ljs-advantage-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 0;
      background: #fff;
      margin-top: 60px;
      border: 1px solid #eaeaea;
    }
    .ljs-advantage-item {
      display: flex;
      align-items: center;
      padding: 18px 20px;
      border-bottom: 1px solid #d7d8d9;
      transition: background 0.2s;
      background: #fff;
    }
    .ljs-advantage-item:hover { background: #f9f9f9; }
    .ljs-advantage-item:last-child { border-bottom: none; }
    .ljs-advantage-item img {
      margin-right: 20px;
      flex-shrink: 0;
    }
    .ljs-advantage-txt h4 {
      font-size: 16px;
      font-weight: 700;
      color: #333;
      margin-bottom: 6px;
    }
    .ljs-advantage-txt p {
      font-size: 14px;
      color: #333;
      margin: 0;
    }
    @media (max-width: 576px) {
      .ljs-advantage-item { flex-wrap: wrap; }
      .ljs-advantage-item img { width: 40px; height: 40px; margin-right: 12px; }
    }

    /* ========== 产品对比 - 按列排版 ========== */
    .ljs-compare-wrapper {
      display: flex;
      gap: 0;
      background: #fff;
      border: 1px solid #d7d8d9;
      margin-top: 60px;
      -webkit-overflow-scrolling: touch;
    }

    .ljs-compare-col {
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
    }

    /* ===== 桌面端列宽 ===== */
    .ljs-compare-col.col-1 { flex: 0 0 208px; min-width: 208px; border-right: 1px solid #d7d8d9; }
    .ljs-compare-col.col-2 { flex: 0 0 455px; min-width: 455px; border-right: 1px solid #d7d8d9; }
    .ljs-compare-col.col-3 { flex: 0 0 329px; min-width: 329px; border-right: 1px solid #d7d8d9; background: #fff; box-shadow: 0px 2px 6px 0px rgba(0,0,0,0.33); margin-top: -1px; margin-bottom: -1px; position: relative; z-index: 1; }
    .ljs-compare-col.col-4 { flex: 0 0 151px; min-width: 151px; border-right: 1px solid #d7d8d9; }
    .ljs-compare-col.col-5 { flex: 0 0 151px; min-width: 151px; }

    /* ===== 每个单元格 ===== */
    .ljs-compare-col .ljs_compare {
      border-bottom: 1px solid #d7d8d9;
      border-right: 1px solid #d7d8d9;
      text-align: center;
      box-sizing: border-box;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 14px;
      color: #666;
    }

    /* ===== 第1列（功能分类）背景色交替 ===== */
    .ljs-compare-col.col-1 .ljs_compare:nth-child(odd) { background: #f9f9f9; }
    .ljs-compare-col.col-1 .ljs_compare:nth-child(even) { background: #fff; }
    .ljs-compare-col.col-1 .lsj_compare-title { background: #f9f9f9 !important; }

    /* ===== 第2列（功能列）背景色交替，与第1列对应 ===== */
    .ljs-compare-col.col-2 .ljs_compare:nth-child(odd) { background: #f9f9f9; }
    .ljs-compare-col.col-2 .ljs_compare:nth-child(even) { background: #fff; }
    .ljs-compare-col.col-2 .lsj_compare-title { background: #f9f9f9 !important; }

    /* 第2列内容左对齐 */
    .ljs-compare-col.col-2 .ljs_compare {
      padding: 0 10px;
      text-align: left;
      justify-content: flex-start;
    }
    .ljs-compare-col.col-2 .ljs_compare.lsj_compare-title {
      justify-content: center;
      text-align: center;
    }
    .ljs-compare-col.col-2 .ljs_compare p {
      margin: 0;
      line-height: 40px;
      text-align: left;
      width: 100%;
      font-size: 14px;
      color: #666;
    }

    /* ===== 第3、4、5列居中对齐 ===== */
    .ljs-compare-col.col-3 .ljs_compare,
    .ljs-compare-col.col-4 .ljs_compare,
    .ljs-compare-col.col-5 .ljs_compare {
      justify-content: center;
      text-align: center;
    }

    /* ===== 标题行 ===== */
    .ljs_compare.lsj_compare-title {
      height: 58px;
      line-height: 58px;
      color: #333;
      font-size: 18px;
      font-weight: bold;
      flex-shrink: 0;
    }

    /* ===== 高度类 ===== */
    .lsj_compare_h40 { height: 40px; line-height: 40px; min-height: 40px; }
    .lsj_compare_h159 { height: 159px; min-height: 159px; flex-direction: column; line-height: 1.5; padding: 10px 0; }
    .lsj_compare_h240 { height: 240px; min-height: 240px; flex-direction: column; line-height: 1.5; padding: 10px 0; }
    .lsj_compare_h119 { height: 119px; min-height: 119px; flex-direction: column; line-height: 1.5; padding: 10px 0; }

    /* ===== 安企裸金属专用背景 ===== */
    .lsj_compare-bg1 { background: #e9f9fe; }

    /* ===== 对勾图标 ===== */
    .ljs_compare_dui {
      display: inline-block;
      background: url('/css/2020/images/ljs_duihao.png') no-repeat center;
      background-size: contain;
      width: 20px;
      height: 16px;
      flex-shrink: 0;
    }

    /* ===== 每个列最后一个单元格去掉底部边框 ===== */
    .ljs-compare-col .ljs_compare:last-child {
      border-bottom: none;
    }

    /* ===== 按钮样式 ===== */
    .lsj_btn {
      margin-top: 60px;
      text-align: center;
    }
    .lsj_btn a {
      display: inline-block;
      width: 120px;
      height: 39px;
      border: 1px solid #16b8ed;
      border-radius: 5px;
      font-size: 16px;
      color: #fff;
      text-align: center;
      line-height: 39px;
      margin: 0 10px;
      text-decoration: none;
      transition: all 0.3s;
    }
    .lsj_btn a:first-child {
      background: transparent;
      color: #fff;
    }
    .lsj_btn a:first-child:hover {
      background: #07aadf;
      color: #fff;
    }
    .lsj_btn a:last-child {
      background: #16b8ed;
      color: #fff;
    }
    .lsj_btn a:last-child:hover {
      background: #07aadf;
    }

    /* ============================================================
       移动端适配
       ============================================================ */

    /* 平板端 */
    @media screen and (max-width: 1200px) {
      .ljs-compare-col.col-1 { flex: 0 0 150px; min-width: 150px; }
      .ljs-compare-col.col-2 { flex: 0 0 320px; min-width: 320px; }
      .ljs-compare-col.col-3 { flex: 0 0 240px; min-width: 240px; }
      .ljs-compare-col.col-4 { flex: 0 0 100px; min-width: 100px; }
      .ljs-compare-col.col-5 { flex: 0 0 100px; min-width: 100px; }
      .ljs_compare { font-size: 13px !important; }
      .ljs-compare-col.col-2 .ljs_compare p { font-size: 13px !important; }
    }

    /* 手机端 */
    @media screen and (max-width: 768px) {
      .ljs-compare-wrapper {
        margin-top: 30px;
        border-radius: 8px;
        overflow-x: auto;
        overflow-y: visible;
      }

      .ljs-compare-col.col-1 { flex: 0 0 100px; min-width: 100px; }
      .ljs-compare-col.col-2 { flex: 0 0 200px; min-width: 200px; }
      .ljs-compare-col.col-3 { flex: 0 0 150px; min-width: 150px; }
      .ljs-compare-col.col-4 { flex: 0 0 70px; min-width: 70px; }
      .ljs-compare-col.col-5 { flex: 0 0 70px; min-width: 70px; }

      .ljs_compare {
        font-size: 11px !important;
      }
      .ljs_compare.lsj_compare-title {
        font-size: 13px !important;
        height: 45px;
        line-height: 45px;
      }

      .lsj_compare_h40 { height: 32px; line-height: 32px; min-height: 32px; }
      .lsj_compare_h159 { height: 120px; min-height: 120px; padding: 5px 0; }
      .lsj_compare_h240 { height: 180px; min-height: 180px; padding: 5px 0; }
      .lsj_compare_h119 { height: 90px; min-height: 90px; padding: 5px 0; }

      .ljs-compare-col.col-2 .ljs_compare {
        padding: 0 6px;
      }
      .ljs-compare-col.col-2 .ljs_compare p {
        font-size: 10px !important;
        line-height: 18px !important;
      }

      .ljs_compare_dui {
        width: 14px;
        height: 11px;
      }

      /* 按钮适配 */
      .lsj_btn {
        margin-top: 30px;
      }
      .lsj_btn a {
        width: 100px;
        height: 34px;
        line-height: 34px;
        font-size: 14px;
        margin: 0 5px;
      }
    }

    /* 小屏手机 */
    @media screen and (max-width: 480px) {
      .ljs-compare-col.col-1 { flex: 0 0 80px; min-width: 80px; }
      .ljs-compare-col.col-2 { flex: 0 0 150px; min-width: 150px; }
      .ljs-compare-col.col-3 { flex: 0 0 120px; min-width: 120px; }
      .ljs-compare-col.col-4 { flex: 0 0 55px; min-width: 55px; }
      .ljs-compare-col.col-5 { flex: 0 0 55px; min-width: 55px; }

      .ljs_compare {
        font-size: 9px !important;
      }
      .ljs_compare.lsj_compare-title {
        font-size: 11px !important;
        height: 38px;
        line-height: 38px;
      }

      .lsj_compare_h40 { height: 28px; line-height: 28px; min-height: 28px; }
      .lsj_compare_h159 { height: 90px; min-height: 90px; padding: 3px 0; }
      .lsj_compare_h240 { height: 130px; min-height: 130px; padding: 3px 0; }
      .lsj_compare_h119 { height: 70px; min-height: 70px; padding: 3px 0; }

      .ljs-compare-col.col-2 .ljs_compare p {
        font-size: 8px !important;
        line-height: 14px !important;
      }

      .ljs_compare_dui {
        width: 12px;
        height: 9px;
      }

      .lsj_btn a {
        width: 80px;
        height: 30px;
        line-height: 30px;
        font-size: 12px;
        margin: 0 3px;
      }
    }

    /* 应用场景 tabs hover */
    .ljs-tabs {
      display: flex;
      justify-content: center;
      gap: 60px;
      border-bottom: 1px solid #dfe1e6;
      padding-left: 0;
      margin-top: 60px;
    }
    .ljs-tab {
      font-size: 18px;
      font-weight: 700;
      color: #818282;
      padding: 0 0 8px 0;
      cursor: pointer;
      border-bottom: 4px solid transparent;
      transition: all 0.2s;
    }
    .ljs-tab.active, .ljs-tab:hover {
      color: #333;
      border-bottom-color: #16b8ed;
    }
    .ljs-scene-wrapper { margin-top: 40px; }
    .ljs-scene-panel { display: none; }
    .ljs-scene-panel.active { display: block; }
    .ljs-scene-inner {
      display: flex;
      flex-wrap: wrap;
      gap: 37px;
      background: #fff;
      padding: 20px;
      border: 1px solid #ebecec;
      align-items: stretch;
    }
    .ljs-scene-left {
      flex: 0 0 710px;
      max-width: 100%;
      background: #fbfbfb;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 380px;
      padding: 20px;
    }
    .ljs-scene-right {
      flex: 1;
      min-width: 280px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .ljs-scene-right-content {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .ljs-scene-right h6 {
      font-size: 16px;
      font-weight: 700;
      color: #373d41;
      margin: 0 0 4px 0;
    }
    .ljs-scene-right p {
      font-size: 14px;
      color: #5f6367;
      line-height: 24px;
      margin: 0;
    }
    .ljs-partner {
      display: flex;
      flex-wrap: wrap;
      gap: 20px 26px;
      margin-top: 6px;
    }
    .ljs-partner a {
      text-align: center;
      font-size: 14px;
      color: #373d41;
    }
    .ljs-partner a img { display: block; margin: 0 auto 8px; }
    .ljs-scene-actions {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      margin-top: 20px;
    }
    @media (max-width: 992px) {
      .ljs-scene-left { flex: 1 1 100%; }
      .ljs-tabs { gap: 30px; }
    }
    @media (max-width: 576px) {
      .ljs-tabs { gap: 16px; flex-wrap: wrap; }
      .ljs-tab { font-size: 16px; }
    }

    /* 注册区 */
    .ljs-register {
      background: #333;
      padding: 50px 0;
      position: relative;
      overflow: hidden;
    }
    .ljs-register-inner {
      position: relative;
      z-index: 2;
      text-align: center;
    }
    .ljs-register-inner h2 {
      font-size: 30px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 30px;
    }
    .ljs-register-inner .ljs-btn {
      background: transparent;
      border-color: #16b8ed;
      color: #fff;
      width: 180px;
      height: 40px;
      line-height: 40px;
    }
    .ljs-register-inner .ljs-btn:hover { background: #16b8ed; }
    .ljs-float-bg {
      position: absolute;
      opacity: 0.5;
      pointer-events: none;
      z-index: 0;
    }
    .ljs-float-bg img { width: auto; height: auto; }

    /* 问答列表 */
    .ljs-qa-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px 20px;
      margin-top: 30px;
    }
    .ljs-qa-item {
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .ljs-qa-item span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background: #16b8ed;
      color: #fff;
      font-size: 14px;
      border-radius: 50%;
      flex-shrink: 0;
    }
    .ljs-qa-item a {
      font-size: 14px;
      color: #333;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    @media (max-width: 992px) {
      .ljs-qa-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 576px) {
      .ljs-qa-grid { grid-template-columns: 1fr; gap: 16px; }
    }

    .ljs-mt-60 { margin-top: 60px; }
    .ljs-d-flex { display: flex; }
    .ljs-gap-20 { gap: 20px; }
    .ljs-justify-center { justify-content: center; }
    .ljs-flex-wrap { flex-wrap: wrap; }
    .ljs-align-center { align-items: center; }

    /* 动画装饰 */
    @keyframes animate-1 { 0% { top: -210px; left: 563px; } 50% { top: -100px; left: 500px; } 100% { top: -210px; left: 563px; } }
    @keyframes animate-2 { 0% { top: -132px; right: 253px; } 30% { top: -90px; right: 300px; } 60% { top: 10px; right: 250px; } 100% { top: -132px; right: 253px; } }
    @keyframes animate-3 { 0% { top: -106px; right: 0px; } 50% { top: -80px; right: 100px; } 100% { top: -106px; right: 0px; } }
    @keyframes animate-4 { 0% { top: 85px; right: 241px; } 50% { top: 50px; right: 200px; } 100% { top: 85px; right: 241px; } }
    @keyframes animate-5 { 0% { top: 48px; left: 72px; } 30% { top: 60px; left: 130px; } 60% { top: 30px; left: 50px; } 100% { top: 48px; left: 72px; } }
    @keyframes animate-6 { 0% { top: 50px; left: 211px; } 50% { top: 20px; left: 100px; } 100% { top: 50px; left: 211px; } }