@charset "utf-8";
/* CSS Document */



  .content {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
  }
  .content::before, .content::after {
    content: '';
    display: block;
    clear: both;
  }

  /* ============ 区块标题 ============ */
  .product {
    padding: clamp(48px, 7vw, 20px) 0 clamp(40px, 6vw, 70px);
    background: linear-gradient(180deg, #ffffff 0%, #f4f8fd 100%);
    overflow: hidden;
	font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: #1a1a1a;
	-webkit-text-size-adjust: 100%; 
  }
  .index-title {
    max-width: 600px;
    margin: 0 auto clamp(28px, 4vw, 40px);
    text-align: center;
  }
  .index-title h2 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: clamp(28px, 4.2vw, 48px);
    color: #3871c1;
    letter-spacing: 3px;
    line-height: 1.2;
  }
  .index-title h2 b { color: #1a1a1a; }
  .index-title h2::before,
  .index-title h2::after {
    content: "";
    flex: none;
    width: 30px;
    height: 2px;
    background: #1a1a1a;
    transition: all .6s cubic-bezier(0.075, 0.82, 0.165, 1);
  }
  .index-title h2:hover::before,
  .index-title h2:hover::after {
    width: 70px;
    height: 3px;
    background: #3162a5;
  }
  .index-title p {
    color: #333;
    font-size: clamp(14px, 2vw, 18px);
    line-height: 2;
    margin-top: 8px;
  }

  /* ============ 主体布局：左导航 + 右展示 ============ */
  .product-wrap {
    display: flex;
    align-items: stretch;
    gap: 40px;
  }

  /* ---- 左侧导航 ---- */
  .product-nav {
    flex: none;
    width: 260px;
  }
  .product-nav .item_tab {
    display: block;
    padding: 9px 25px 9px 25px;
    background: #3871c1;
    cursor: pointer;
    transition: all .4s linear;
  }
  .product-nav .item_tab a {
    display: block;
    color: #fff;
    position: relative;
    transition: all .4s linear;
  }
  .product-nav .item_tab h4 {
    font-size: 20px;
    line-height: 27px;
  }
  .product-nav .item_tab p {
    font-size: 10px;
    line-height: 1.4;
    text-transform: uppercase;
    opacity: .85;
  }
  /* 右侧箭头（CSS 绘制，不依赖外链图标字体） */
  .product-nav .item_tab i {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 9px;
    height: 9px;
    border-top: 2px solid rgba(255,255,255,.85);
    border-right: 2px solid rgba(255,255,255,.85);
    transform: translateY(-50%) rotate(45deg);
    transition: all .3s linear;
  }
  .product-nav .item_tab:hover,
  .product-nav .item_tab.on {
    background: #ff9604;
    border-bottom-color: #d97b00;
    padding-left: 40px;
  }
  .product-nav .item_tab:hover i,
  .product-nav .item_tab.on i {
    border-color: #fff;
  }

  /* ---- 右侧展示 ---- */
  .product-shows {
    flex: 1;
    min-width: 0;
  }
  .product-shows > ul {
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  .product-shows > ul > li {
    display: none;
    padding: 0px 0;
  }
  .product-shows > ul > li.active {
    display: flex;
    flex: 1;
    align-items: flex-start; /* 顶头展示 */

  }
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .panel {
    width: 100%;
    display: flex;
    flex-direction: column-reverse; /* 图片横幅在上、文字在下（DOM 中文字在前，故反转） */
    gap: 24px;
  }
  .panel-text { width: 100%; min-width: 0; }
  .panel-text h2 {
    font-size: clamp(26px, 3.2vw, 30px);
    line-height: 1.5;
    color: #1a1a1a;
  }
  .panel-text h2 a { transition: color .3s; }
  .panel-text h2 a:hover { color: #ff9604; }
  .panel-text > p {
    border-top: 3px solid #e5e5e5;
    line-height: 1.8;
    padding-top: 18px;
    margin-top: 14px;
    font-size: 16px;
    color: #444;
  }
  /* 子产品标签 */
  .panel-sub {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 22px;
  }
  .panel-sub li {
    line-height: 38px;
    height: 38px;
    text-align: center;
    font-size: 14px;
    border-bottom: 0px dashed #1a1a1a;
    background: rgba(56, 113, 193, .04);
    transition: all .3s;
  }
  .panel-sub li a {
    display: block;
    color: #1a1a1a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color .3s;
  }
  .panel-sub li:hover {
    border-bottom-color: #3871c1;
    background: rgba(56, 113, 193, .1);
  }
  .panel-sub li:hover a { color: #3871c1; }

  /* 了解更多按钮 */
  .panel-more { margin-top: 36px; }
  .panel-more a {
    display: inline-block;
    color: #fff;
    background: #3871c1;
    padding: 14px 35px;
    font-size: 15px;
    transition: all .3s linear;
  }
  .panel-more a i {
    display: inline-block;
    font-style: normal;
    margin-left: 12px;
    transition: transform .3s;
  }
  .panel-more a:hover {
    background: #ff9604;
    box-shadow: 0 8px 20px rgba(255, 150, 4, .35);
  }
  .panel-more a:hover i { transform: translateX(5px); }

  /* ---- 图片占位符（上线时替换为 <img>） ---- */
  .panel-img {
    width: 100%;
  }
  .panel-img a { display: block; }
  .ph-img {
    position: relative;
    aspect-ratio: 7 / 3;
    background:
      linear-gradient(135deg, #eef4fc 0%, #d9e8fa 55%, #cfe2f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: all .4s;
  }
  .ph-img::after {
    content: "";
    position: absolute;
    inset: 12px;
    border: 0px solid rgba(56, 113, 193, .18);
    pointer-events: none;
  }
  .ph-img svg { transition: transform .6s ease; flex: none; width: 96px; height: 96px; }
  .ph-center {
    display: flex;
    align-items: center;
    gap: 22px;
  }
  .ph-text {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .panel-img a:hover .ph-img {
    border-color: #3871c1;
    box-shadow: 0 14px 34px rgba(56, 113, 193, .18);
  }
  .panel-img a:hover .ph-img svg { transform: rotate(45deg) scale(1.06); }
  .ph-num {
    position: absolute;
    top: 14px;
    left: 22px;
    font-size: 54px;
    font-weight: 700;
    color: rgba(56, 113, 193, .16);
    letter-spacing: 2px;
    line-height: 1;
  }
  .ph-name {
    font-size: 17px;
    color: #3871c1;
    letter-spacing: 2px;
  }
  .ph-tip {
    font-size: 12px;
    color: #9db6d8;
    letter-spacing: 1px;
  }

  /* ============ 响应式 ============ */
  /* 中小屏：上下布局，产品展示在上、导航在下 */
  @media (max-width: 1080px) {
    .product-wrap {
      flex-direction: column-reverse;
      gap: 24px;
    }
    .product-nav {
      width: 100%;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }
    .product-nav .item_tab,
    .product-nav .item_tab:hover,
    .product-nav .item_tab.on { padding: 10px 16px; }
    .product-nav .item_tab h4 { font-size: 17px; line-height: 1.6; }
    .product-nav .item_tab p { font-size: 11px; }
    .product-nav .item_tab i { display: none; }
    .product-shows > ul > li { padding: 10px 0; }
    .panel { gap: 20px; }
    .panel-img { max-width: 440px; } /* 方图限宽，中屏不过分巨大 */
  }

  /* 小屏：导航两列，占位图比例收紧 */
  @media (max-width: 720px) {
    .product-nav { grid-template-columns: repeat(2, 1fr); }
    .ph-img svg { width: 50px; height: 50px; }
    .ph-center { gap: 14px; }
    .ph-text { gap: 4px; }
    .ph-num { font-size: 30px; top: 8px; left: 12px; }
    .ph-name { font-size: 15px; }
    .panel-text > p { font-size: 14px; }
    .panel-sub { grid-template-columns: repeat(2, 1fr); margin-top: 16px; }
    .panel-more { margin-top: 20px; }
    .panel-more a { padding: 12px 26px; }
  }