/* 基础样式复位 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    background-color: #f9fbff;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.section-header p {
    font-size: 14px;
    color: #666;
    margin-bottom: 40px;
}

/* 行业解决方案卡片布局 */
 .card-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-bottom: 30px;
}

.card-grid .card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    width: calc(20% - 20px); /* 默认5列 */
    min-width: 200px;
    transition: transform 0.3s;
    text-align: left;
    padding-bottom: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.card-grid.card:hover {
    transform: translateY(-5px);
}

.card-img img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-grid .card h3 {
    font-size: 16px;
    margin: 15px 12px 8px;
}

.card-grid.card p {
    font-size: 12px;
    color: #888;
    padding: 0 12px;
    line-height: 1.5;
}

/* 分隔线 */
.divider {
    border: none;
    border-top: 1px solid #eee;
    margin: 40px 0;
}

/* 产品中心 - 选项卡 */
.tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab {
    padding: 8px 20px;
    cursor: pointer;
    border-radius: 20px;
    font-size: 14px;
    color: #666;
    transition: 0.3s;
}

.tab.active {
    background-color: #2b5ae1;
    color: #fff;
}

/* 产品网格布局 */
.product-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: space-between;
}

.product-item {
    background: #fff;
    border: 1px solid #f0f0f0;
    width: calc(16.66% - 15px); /* 默认6列 */
    padding: 20px 10px;
    border-radius: 4px;
    transition: 0.3s;
}

.product-item:hover {
    border-color: #2b5ae1;
}

.product-img img {
    max-width: 100%;
    height: auto;
    margin-bottom: 15px;
}

.product-item h4 {
    font-size: 13px;
    margin-bottom: 10px;
}

.product-item p {
    font-size: 11px;
    color: #999;
}

/* 查看全部按钮 */
.view-all {
    display: inline-block;
    margin-top: 30px;
    color: #2b5ae1;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
}

/* --- 响应式适配 --- */

/* 平板模式：3列或4列 */
@media (max-width: 1024px) {
    .card { width: calc(33.33% - 20px); }
    .product-item { width: calc(33.33% - 15px); }
}

/* 手机模式：1列或2列 */
@media (max-width: 600px) {
    .card { width: 100%; }
    .product-item { width: calc(50% - 15px); }
    .section-header h2 { font-size: 22px; }
    .tabs { gap: 10px; }
    .tab { font-size: 12px; padding: 5px 12px; }
}
        /* 默认隐藏所有面板 */
.content-panel {
    display: none; 
    animation: fadeIn 0.4s ease; /* 增加一个淡入动画 */
}

/* 只有激活状态的面板才显示 */
.content-panel.active {
    display: flex; /* 保持 flex 布局 */
}

/* 简单的淡入效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}


/* 关于我们板块容器 */
.about-section {
    background: linear-gradient(to bottom, #f0f7ff, #ffffff);
    padding: 80px 20px;
}

.about-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* 上部图文布局 */
.about-main {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 50px;
}

.about-text {
    flex: 1;
    text-align: left;
}

.sub-title {
    color: #2b5ae1;
    font-weight: bold;
    font-size: 16px;
}

.title-line {
    width: 30px;
    height: 3px;
    background: #2b5ae1;
    margin: 10px 0 25px;
}

.about-text h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.description {
    font-size: 15px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 35px;
}

/* 特性图标 */
.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #333;
}

.icon-box {
    width: 36px;
    height: 36px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

/* 按钮样式 */
.btn-more {
    display: inline-block;
    background: #2b5ae1;
    color: #fff;
    padding: 12px 35px;
    border-radius: 25px;
    text-decoration: none;
    transition: 0.3s;
}

.btn-more:hover {
    background: #1a44c2;
    box-shadow: 0 5px 15px rgba(43,90,225,0.3);
}

/* 右侧大图 */
.about-image {
    flex: 1.2;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 底部数据栏 */
.stats-bar {
    background: #fff;
    border-radius: 12px;
    padding: 30px 20px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 5px 25px rgba(0,0,0,0.03);
}

.stats-bar .stat-item {
    text-align: center;
    flex: 1;
    border-right: 1px solid #f0f0f0;
}

.stats-bar .stat-item:last-child {
    border-right: none;
}

.stats-bar .stat-item.first {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.stats-bar .stat-item strong {
    display: block;
    font-size: 28px;
    color: #2b5ae1;
    margin-bottom: 5px;
}

.stats-bar .stat-item strong span {
    font-size: 14px;
    margin-left: 2px;
}

.stats-bar .stat-item p {
    font-size: 13px;
    color: #888;
}
.stats-bar .stat-item .stat-icon{ font-size: 24px;}

.advantage-section {
    padding: 80px 0;
    background-color: #fff;
}

.sub-header {
    color: #2b5ae1;
    font-weight: bold;
    display: block;
    margin-bottom: 10px;
    letter-spacing: 2px;
}


/* --- 响应式适配 --- */
@media (max-width: 992px) {
    .about-main {
        flex-direction: column;
        text-align: center;
    }
    .title-line { margin: 10px auto 25px; }
    .features { justify-items: center; }
    .stats-bar {
        flex-wrap: wrap;
    }
    .stat-item {
        flex: 33.33%;
        margin: 15px 0;
        border-right: none;
    }
}

@media (max-width: 600px) {
    .stat-item { flex: 50%; }
    .about-text h2 { font-size: 24px; }
}
.company-introduce p{
    font-size: 15px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 35px;
}
.company-introduce h2{
    font-size: 24px;
    color: #1a1a1a;
    margin-bottom: 20px;
}



    /* 优势板块 */
    .advantage-section {
      position: relative;
      overflow: hidden;
      padding: 110px 0;
      background:
        radial-gradient(
          circle at top right,
          rgba(82, 122, 255, 0.12),
          transparent 35%
        ),
        linear-gradient(
          180deg,
          #f8fbff 0%,
          #f3f7ff 100%
        );
    }

    /* 网格背景 */
    .advantage-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(
          rgba(91, 128, 255, 0.03) 1px,
          transparent 1px
        ),
        linear-gradient(
          90deg,
          rgba(91, 128, 255, 0.03) 1px,
          transparent 1px
        );
      background-size: 40px 40px;
      pointer-events: none;
    }

    .container {
      width: 1400px;
      margin: auto;
      position: relative;
      z-index: 2;
    }

    /* 标题 */
    .section-header {
      text-align: center;
      margin-bottom: 70px;
    }

    .top-tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 42px;
      padding: 0 26px;
      border-radius: 999px;
      background: rgba(83, 123, 255, 0.08);
      border: 1px solid rgba(83, 123, 255, 0.12);
      color: #4b74ff;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 24px;
      backdrop-filter: blur(10px);
    }

    .section-title {
      font-size: 58px;
      line-height: 1.2;
      font-weight: 800;
      color: #12213f;
      margin-bottom: 18px;
      letter-spacing: -2px;
    }

    .section-desc {
      font-size: 20px;
      color: #6d7b9a;
      margin-bottom: 30px;
    }

    .title-line {
      width: 90px;
      height: 6px;
      border-radius: 999px;
      margin: auto;
      background: linear-gradient(
        90deg,
        #4b74ff,
        #8eb2ff
      );
    }

    /* 主布局 */
    .advantage-layout {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr;
      gap: 28px;
      margin-bottom: 35px;
    }

    .left-card {
      min-height: 760px;
    }

    .right-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
      grid-column: span 2;
    }

    /* 卡片 */
    .advantage-layout .card {
      position: relative;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(82, 122, 255, 0.14);
      border-radius: 34px;
      padding: 15px;
      overflow: hidden;
      backdrop-filter: blur(20px);

      box-shadow:
        0 0 0 1px rgba(82, 122, 255, 0.03),
        0 20px 60px rgba(45, 74, 170, 0.08);

      transition:
        transform 0.35s ease,
        box-shadow 0.35s ease,
        border-color 0.35s ease;
    }

    .card:hover {
      transform: translateY(-10px);

      border-color: rgba(82, 122, 255, 0.28);

      box-shadow:
        0 0 0 1px rgba(82, 122, 255, 0.08),
        0 25px 80px rgba(58, 96, 220, 0.16);
    }

    .card-number {
      position: absolute;
      right: 25px;
      top: 25px;
      font-size: 120px;
      line-height: 1;
      font-weight: 800;
      color: rgba(75, 116, 255, 0.04);
      user-select: none;
    }

    .small-index {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(
        180deg,
        #6d96ff,
        #4b74ff
      );
      color: #fff;
      font-weight: 700;
      font-size: 22px;
      margin-bottom: 34px;

      box-shadow:
        0 10px 25px rgba(75, 116, 255, 0.3);
    }

    .card-title {
      font-size: 42px;
      font-weight: 800;
      color: #10203e;
      margin-bottom: 24px;
    }

    .card-desc {
      font-size: 20px;
      line-height: 1.9;
      color: #64748b;
      margin-bottom: 40px;
    }

    .tag-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 22px;
    }

    .tag {
      height: 42px;
      padding: 0 20px;
      border-radius: 12px;
      background: rgba(75, 116, 255, 0.08);
      border: 1px solid rgba(75, 116, 255, 0.08);
      display: flex;
      align-items: center;
      color: #4b74ff;
      font-size: 15px;
      font-weight: 600;
    }

    .stats {
      display: flex;
      gap: 45px;
      margin-top: auto;
      padding-top: 45px;
      border-top: 1px solid rgba(83, 123, 255, 0.08);
    }

    .stat-item h3 {
      font-size: 56px;
      font-weight: 800;
      color: #3566ff;
      margin-bottom: 12px;
    }

    .stat-item p {
      font-size: 18px;
      color: #7a879f;
    }

    /* 右侧小卡 */
    .mini-card {
      min-height: 365px;
      display: flex;
      flex-direction: column;
    }

    .mini-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1px;
    }

    .mini-index {
      width: 50px;
      height: 50px;
      border-radius: 14px;
      background: rgba(75, 116, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #4b74ff;
      font-weight: 700;
      font-size: 20px;
    }

    .mini-dots {
      color: #6f92ff;
      font-size: 22px;
    }

    .mini-title {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 5px;
      color: #16294a;
    }

    .mini-desc {
      font-size: 15px;
      line-height: 1.2;
      color: #6c7a96;
      margin-bottom: 10px;
    }

    .mini-bottom {
      margin-top: auto;
      padding-top: 10px;
      border-top: 1px solid rgba(83, 123, 255, 0.08);

      display: flex;
      align-items: center;
      gap: 18px;
    }

    .icon-box {
      width: 62px;
      height: 62px;
      border-radius: 18px;
      background: rgba(75, 116, 255, 0.08);

      display: flex;
      align-items: center;
      justify-content: center;

      color: #4b74ff;
      font-size: 30px;
    }

    .mini-data h4 {
      font-size: 40px;
      color: #3566ff;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .mini-data p {
      color: #73819d;
      font-size: 16px;
    }

    /* 底部认证 */
    .bottom-cert {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 25px;

      background: rgba(255,255,255,.75);
      border-radius: 30px;
      padding: 35px 45px;

      border: 1px solid rgba(75,116,255,.1);

      box-shadow:
        0 20px 50px rgba(50,80,180,.05);
    }

    .cert-item {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .cert-icon {
      width: 62px;
      height: 62px;
      border-radius: 18px;
      background: rgba(75,116,255,.08);

      display: flex;
      align-items: center;
      justify-content: center;

      color: #4b74ff;
      font-size: 30px;
      flex-shrink: 0;
    }

    .cert-text h5 {
      font-size: 20px;
      color: #1d2d4f;
      margin-bottom: 8px;
    }

    .cert-text p {
      font-size: 15px;
      color: #7b879f;
    }

    /* 响应式 */
    @media (max-width: 1440px) {
      .container {
        width: calc(100% - 40px);
      }
    }

    @media (max-width: 1200px) {
      .advantage-layout {
        grid-template-columns: 1fr;
      }

      .right-grid {
        grid-column: auto;
      }

      .left-card {
        min-height: auto;
      }
    }

    @media (max-width: 768px) {
      .section-title {
        font-size: 38px;
      }

      .right-grid {
        grid-template-columns: 1fr;
      }

      .bottom-cert {
        grid-template-columns: 1fr;
      }

      .stats {
        flex-direction: column;
        gap: 25px;
      }

      .card-title {
        font-size: 34px;
      }
    }