:root{
    --primary:#0a4ffd;
    --primary-hover:#1a70fd;
    --primary-deep:#0f1f4a;
    --primary-soft:#eff4ff;
    --accent:#047857;
    --gold:#b45309;
    --ink:#0f172a;
    --ink-2:#334155;
    --ink-3:#64748b;
    --ink-4:#94a3b8;
    --line:#e2e8f0;
    --line-2:#cbd5e1;
    --bg:#ffffff;
    --bg-soft:#f6f7f9;
    --bg-soft-2:#eef1f5;
    --bg-dark:#0f172a;
    --radius:6px;
    --max:1440px;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;font-size:16px}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 56px;position:relative}

  /* 顶部公告条 */
  .topbar{background:var(--bg-dark);color:#cbd5e1;font-size:13px;padding:9px 0}
  .topbar .wrap{display:flex;justify-content:space-between;align-items:center}
  .topbar a{color:#fff;font-weight:600}
  .topbar .ph{display:flex;align-items:center;gap:6px}

  /* 导航 */
  header{background:rgba(255,255,255,1);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
  .nav{display:flex;align-items:center;justify-content:space-between;height:72px}
  .logo{width:250px;display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink)}
  .logo .mark{width:36px;height:36px;border-radius:6px;background:var(--primary);display:grid;place-items:center;color:#fff;font-size:17px;font-weight:700}
  .menu{display:flex;align-items:center;gap:34px}
  .menu a{color:var(--ink-2);font-size:15px;font-weight:500;transition:color .15s}
  .menu a:hover{color:var(--primary)}
  .menu .active,.menu .active a{color:var(--primary); font-weight:bold;}
  .nav-cta{display:flex;align-items:center;gap:16px}
  .nav-cta .tel{font-size:14px;color:var(--ink-2);font-weight:600}
  .nav-cta .tel b{color:var(--primary);font-size:16px}
  .btn{display:inline-flex;align-items:center;gap:6px;padding:11px 22px;border-radius:5px;font-weight:600;font-size:14px;cursor:pointer;transition:background .15s,border-color .15s,transform .15s;border:1px solid transparent;font-family:inherit}
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{background:var(--primary-hover)}
  .btn-outline{background:#fff;color:var(--ink);border-color:var(--line-2)}
  .btn-outline:hover{border-color:var(--primary);color:var(--primary)}
  .btn-lg{padding:15px 34px;font-size:15px}
  .btn-light{background:#fff;color:var(--primary)}
  .btn-light:hover{background:#f3f4f6}

  /* ============ 多业务轮播 Banner ============ */
  .banner{position:relative;background:var(--bg-dark);overflow:hidden}
  .banner::before{content:"";position:absolute;inset:0;background:
    radial-gradient(circle at 18% 30%,rgba(10,79,253,.35),transparent 45%),
    radial-gradient(circle at 82% 70%,rgba(4,120,87,.18),transparent 45%);
    pointer-events:none}
  .banner::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
  .banner-track{position:relative;z-index:2}
  .slide{display:none;padding:96px 0 110px}
  .slide.active{display:block;animation:fade .6s}
  @keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
  .slide-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:center}
  .slide .tag{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:5px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);color:#c7d2fe;font-size:13px;font-weight:600;margin-bottom:28px}
  .slide .tag .dot{width:7px;height:7px;border-radius:50%;background:#34d399;animation:pulse 1.8s infinite}
  @keyframes pulse{50%{opacity:.4}}
  .slide h1{font-size:54px;line-height:1.2;font-weight:700;letter-spacing:-1px;margin-bottom:24px;color:#fff}
  .slide h1 em{font-style:normal;color:#1a70fd}
  .slide .sub{font-size:18px;color:#cbd5e1;margin-bottom:40px;max-width:620px;line-height:1.7}
  .slide-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
  .slide-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:rgba(255,255,255,.03);overflow:hidden}
  .slide-meta .m{padding:22px 26px;border-right:1px solid rgba(255,255,255,.08)}
  .slide-meta .m:last-child{border-right:none}
  .slide-meta .m b{display:block;font-size:30px;color:#fff;font-weight:700;line-height:1;margin-bottom:8px}
  .slide-meta .m span{color:#94a3b8;font-size:13px}

  /* slide 右侧视觉 */
  .visual{border:1px solid rgba(255,255,255,.1);border-radius:10px;background:rgba(255,255,255,.04);overflow:hidden;backdrop-filter:blur(8px)}
  .visual .vh{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
  .visual .vh .t{font-size:14px;color:#fff;font-weight:600}
  .visual .vh .live{display:flex;align-items:center;gap:6px;font-size:12px;color:#34d399;font-weight:600}
  .visual .vh .live .d{width:7px;height:7px;border-radius:50%;background:#34d399;animation:pulse 1.6s infinite}
  .visual .vb{padding:24px}
  .v-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
  .v-stats .s{padding:18px 16px;border:1px solid rgba(255,255,255,.08);border-radius:6px;background:rgba(255,255,255,.03)}
  .v-stats .s .v{font-size:24px;font-weight:700;color:#5b9eff;line-height:1}
  .v-stats .s .l{font-size:12px;color:#94a3b8;margin-top:6px}
  .v-chart{border:1px solid rgba(255,255,255,.08);border-radius:6px;padding:18px;background:rgba(255,255,255,.03)}
  .v-chart .ct{font-size:13px;color:#cbd5e1;margin-bottom:14px}
  .v-bars{display:flex;align-items:flex-end;gap:8px;height:90px}
  .v-bars span{flex:1;background:linear-gradient(180deg,#5b9eff,#0a4ffd);border-radius:3px 3px 0 0;opacity:.85}

  /* 轮播控制 */
  .banner-ctl{position:absolute;bottom:36px;left:0;right:0;z-index:5;display:flex;justify-content:center;gap:10px}
  .banner-ctl .dot{width:36px;height:4px;border-radius:2px;background:rgba(255,255,255,.25);cursor:pointer;transition:background .2s;border:none;padding:0}
  .banner-ctl .dot.active{background:#5b9eff}
  .banner-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);color:#fff;font-size:20px;cursor:pointer;transition:background .2s;display:grid;place-items:center}
  .banner-arrow:hover{background:rgba(255,255,255,.18)}
  .banner-arrow.prev{left:40px}
  .banner-arrow.next{right:40px}

  /* 区块通用 */
  section{scroll-margin-top:90px;position:relative}
  .sec{padding:110px 0}
  .sec-soft{background:var(--bg-soft)}
  .sec-dark{background:var(--bg-dark);color:#fff}
  .sec-head{max-width:820px;margin-bottom:72px}
  .sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
  .eyebrow{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:2px;margin-bottom:18px;text-transform:uppercase}
  .sec-dark .eyebrow{color:#5b9eff}
  .sec-head h2{font-size:42px;font-weight:700;color:var(--ink);letter-spacing:-.5px;line-height:1.2;margin-bottom:18px}
  .sec-dark .sec-head h2{color:#fff}
  .sec-head p{color:var(--ink-3);font-size:18px;line-height:1.7}
  .sec-dark .sec-head p{color:#cbd5e1}

  /* ============ 热门场景（核心业务）三卡 + Tab 切换 ============ */
  .sc-tabs{display:flex;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:48px}
  .sc-tab{flex:1;padding:26px 24px;background:#fff;cursor:pointer;transition:background .15s;border:none;font-family:inherit;text-align:left}
  .sc-tab.active{background:var(--primary);color:#fff}
  .sc-tab .n{font-size:13px;color:var(--ink-3);font-weight:600;margin-bottom:6px}
  .sc-tab.active .n{color:#c7d2fe}
  .sc-tab .t{font-size:20px;font-weight:700;color:var(--ink)}
  .sc-tab.active .t{color:#fff}
  .sc-panel{display:none;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
  .sc-panel.active{display:grid}
  .sc-panel .ph{font-size:28px;font-weight:700;margin-bottom:18px;color:var(--ink)}
  .sc-panel .pdesc{color:var(--ink-3);font-size:17px;margin-bottom:28px;line-height:1.75}
  .sc-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
  .sc-tags span{padding:7px 16px;border:1px solid var(--line);border-radius:20px;font-size:13px;color:var(--ink-2);background:#fff}
  .sc-panel .lnk{display:flex;gap:14px;flex-wrap:wrap}
  .sc-visual{border:1px solid var(--line);border-radius:10px;background:linear-gradient(135deg,var(--bg-soft),#fff);height:340px;display:grid;place-items:center;font-size:120px;color:var(--primary-soft);position:relative;overflow:hidden}
  .sc-visual::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(10,79,253,.06) 1px,transparent 1px);background-size:18px 18px}
  .sc-visual .em{position:relative;z-index:1}

  /* ============ 八大 AI 平台 ============ */
  .plats{display:grid;grid-template-columns:repeat(8,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
  .plat{background:#fff;padding:34px 12px;text-align:center;transition:background .15s}
  .plat:hover{background:var(--primary-soft)}
  .plat .pn{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
  .plat .pc{font-size:12px;color:var(--ink-3);margin-bottom:14px}
  .plat .st{display:inline-block;font-size:11px;color:var(--accent);background:#ecfdf5;border:1px solid #a7f3d0;border-radius:3px;padding:3px 9px;font-weight:600}

  /* ============ 行业定制方案：图标网格 + 详情切换 + 细分 Tab ============ */
  .ind-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:56px}
  .ind-ico{background:#fff;padding:30px 8px;cursor:pointer;transition:background .15s;text-align:center;border:none;font-family:inherit}
  .ind-ico:hover{background:var(--primary-soft)}
  .ind-ico.active{background:var(--primary);color:#fff}
  .ind-ico .em{font-size:30px;margin-bottom:10px;display:block}
  .ind-ico .nm{font-size:15px;font-weight:600;color:var(--ink)}
  .ind-ico.active .nm{color:#fff}
  .ind-detail{display:none;background:#fff;border:1px solid var(--line);border-radius:8px;padding:48px;box-shadow:0 1px 3px rgba(15,23,42,.04)}
  .ind-detail.active{display:block;animation:fade .4s}
  .ind-detail .dh{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;flex-wrap:wrap;gap:16px}
  .ind-detail .dh .ph{font-size:26px;font-weight:700;color:var(--ink)}
  .ind-detail .dh .pd{color:var(--ink-3);font-size:15px;max-width:680px}
  .sub-tabs{display:flex;gap:8px;margin-bottom:32px;flex-wrap:wrap}
  .sub-tabs button{padding:10px 22px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;font-weight:600;border-radius:5px;cursor:pointer;transition:all .15s;font-family:inherit}
  .sub-tabs button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
  .sub-panel{display:none;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
  .sub-panel.active{display:grid}
  .sub-panel .ct h4{font-size:20px;font-weight:700;margin-bottom:14px;color:var(--ink)}
  .sub-panel .ct p{color:var(--ink-3);font-size:15px;line-height:1.8;margin-bottom:20px}
  .sub-panel .ct ul{list-style:none}
  .sub-panel .ct ul li{padding:10px 0;font-size:14px;color:var(--ink-2);display:flex;gap:10px;border-bottom:1px dashed var(--line)}
  .sub-panel .ct ul li::before{content:"✓";color:var(--accent);font-weight:700;flex-shrink:0}
  .sub-visual{border:1px solid var(--line);border-radius:8px;background:var(--bg-soft);height:260px;display:grid;place-items:center;font-size:88px;position:relative;overflow:hidden}
  .sub-visual::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(10,79,253,.06) 1px,transparent 1px);background-size:16px 16px}
  .sub-visual .em{position:relative;z-index:1}

  /* ============ 核心数据指标 ============ */
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:10px;overflow:hidden}
  .stats-grid .st{background:rgba(255,255,255,.02);padding:48px 28px;text-align:center;position:relative}
  .stats-grid .st .v{font-size:48px;font-weight:700;color:#5b9eff;line-height:1;letter-spacing:-1px}
  .stats-grid .st .u{font-size:18px;color:#5b9eff;margin-left:4px;font-weight:600}
  .stats-grid .st .l{font-size:15px;color:#cbd5e1;margin-top:14px}

  /* ============ 客户证言 ============ */
  .testi-track{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .testi{border:1px solid var(--line);border-radius:8px;background:#fff;padding:32px;position:relative}
  .testi .qm{font-size:48px;color:var(--primary-soft);font-family:Georgia,serif;line-height:1;margin-bottom:14px}
  .testi .ct{color:var(--ink-2);font-size:15px;line-height:1.8;margin-bottom:24px}
  .testi .who{display:flex;align-items:center;gap:14px;padding-top:20px;border-top:1px solid var(--line)}
  .testi .av{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
  .testi .who .nm{font-weight:700;color:var(--ink);font-size:15px}
  .testi .who .ro{color:var(--ink-3);font-size:13px}

  /* ============ 资讯动态 ============ */
  .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
  .news{border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden;transition:border-color .15s,box-shadow .15s}
  .news:hover{border-color:var(--primary);box-shadow:0 8px 30px rgba(15,23,42,.08)}
  .news .cover{height:180px;background:linear-gradient(135deg,var(--primary-soft),var(--bg-soft-2));display:grid;place-items:center;font-size:60px;position:relative;overflow:hidden}
  .news .cover::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(10,79,253,.08) 1px,transparent 1px);background-size:16px 16px}
  .news .cover .em{position:relative;z-index:1}
  .news .body{padding:24px 26px}
  .news .dt{font-size:12px;color:var(--ink-4);margin-bottom:10px;display:flex;gap:12px}
  .news .dt .cat{color:var(--primary);font-weight:600}
  .news h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:12px;line-height:1.4}
  .news p{color:var(--ink-3);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

  /* CTA */
  .cta-band{background:linear-gradient(120deg,var(--primary-deep),var(--primary));color:#fff;border-radius:12px;padding:64px 64px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;position:relative;overflow:hidden}
  .cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
  .cta-band > *{position:relative;z-index:1}
  .cta-band h2{font-size:30px;font-weight:700;margin-bottom:10px;line-height:1.3}
  .cta-band p{font-size:16px;color:#c7d2fe;line-height:1.7}

  /* 联系 */
  .contact-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:64px;align-items:start}
  .contact-info h2{font-size:34px;font-weight:700;margin-bottom:16px;line-height:1.25}
  .contact-info p{color:var(--ink-3);font-size:16px;margin-bottom:32px;line-height:1.7}
  .contact-info .row{display:flex;padding:18px 0;border-bottom:1px solid var(--line)}
  .contact-info .k{width:110px;flex-shrink:0;color:var(--ink-3);font-size:15px}
  .contact-info .v{color:var(--ink);font-size:15px;font-weight:500;line-height:1.6}
  .contact-card{border:1px solid var(--line);border-radius:8px;padding:40px;text-align:center;background:#fff}
  .contact-card .qr{width:200px;height:200px;border-radius:8px;margin:0 auto 22px;background:var(--bg-soft-2);display:grid;place-items:center;color:var(--ink-3);font-size:14px}
  .contact-card .qr .inner{display:flex;flex-direction:column;gap:8px;align-items:center}
  .contact-card h4{font-size:17px;margin-bottom:6px}
  .contact-card .cp{color:var(--ink-3);font-size:13px;margin-bottom:14px}
  .contact-card .ph{font-size:28px;font-weight:700;color:var(--primary)}

  /* footer */
  footer{background:var(--bg-dark);color:#94a3b8;padding:64px 0 36px;font-size:14px}
  .foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;margin-bottom:40px}
  .foot-top .brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
  .foot-top .brand .mark{width:34px;height:34px;border-radius:6px;background:var(--primary);display:grid;place-items:center;color:#fff;font-weight:700;font-size:16px}
  .foot-top .brand b{color:#fff;font-size:18px}
  .foot-top .desc{color:#94a3b8;line-height:1.8;font-size:14px;max-width:340px;margin-bottom:18px}
  .foot-top .slogan{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid #1e293b;border-radius:5px;color:#5b9eff;font-size:13px;font-weight:600}
  .foot-top h5{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600}
  .foot-top ul{list-style:none}
  .foot-top ul li{margin-bottom:11px}
  .foot-top ul li a{color:#94a3b8;font-size:14px;transition:color .15s}
  .foot-top ul li a:hover{color:#fff}
  .foot-bottom{padding-top:28px;border-top:1px solid #1e293b;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;color:#64748b;font-size:13px}

  @media(max-width:1200px){
    .wrap{padding:0 40px}
    .slide h1{font-size:46px}
    .sec-head h2{font-size:36px}
    .plats{grid-template-columns:repeat(4,1fr)}
    .ind-grid{grid-template-columns:repeat(5,1fr)}
  }
  @media(max-width:980px){
    .menu{display:none}
    .slide-grid,.sc-panel.active,.sub-panel.active,.contact-grid{grid-template-columns:1fr}
    .testi-track,.news-grid{grid-template-columns:1fr 1fr}
    .stats-grid{grid-template-columns:1fr 1fr}
    .ind-grid{grid-template-columns:repeat(4,1fr)}
    .foot-top{grid-template-columns:1fr 1fr}
    .slide h1{font-size:38px}
    .sec{padding:80px 0}
    .slide{padding:64px 0 80px}
    .banner-arrow{display:none}
    .ind-detail{padding:32px}
  }
  @media(max-width:600px){
    .wrap{padding:0 20px}
    .plats{grid-template-columns:1fr 1fr}
    .ind-grid{grid-template-columns:1fr 1fr}
    .slide-meta,.stats-grid,.testi-track,.news-grid{grid-template-columns:1fr}
    .slide-meta .m{border-right:none;border-bottom:1px solid rgba(255,255,255,.08)}
    .foot-top{grid-template-columns:1fr}
    .cta-band{flex-direction:column;text-align:center;padding:40px 28px}
    .nav-cta .tel{display:none}
    .slide h1{font-size:32px}
    .sec-head h2{font-size:28px}
    .ind-detail{padding:24px}
    .sc-tabs{flex-direction:column}
  }