:root{
      --bg:#050b17;
      --bg2:#081225;
      --panel:#0a1530;
      --panel2:#0d1936;
      --line:rgba(114,162,255,.16);
      --line2:rgba(120,178,255,.28);
      --text:#eef4ff;
      --muted:#9cb0d6;
      --blue:#2d7fff;
      --cyan:#21d4ff;
      --purple:#8758ff;
      --glow:0 0 30px rgba(45,127,255,.18),0 0 54px rgba(135,88,255,.12);
      --gradient:linear-gradient(135deg,#2d7fff 0%,#21d4ff 38%,#8a5bff 100%);
      --radius:16px;
      --shadow:0 14px 36px rgba(0,0,0,.22);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-width:320px;
      font-family:Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 0%, rgba(45,127,255,.12), transparent 28%),
        radial-gradient(circle at 100% 12%, rgba(138,91,255,.12), transparent 24%),
        linear-gradient(180deg,#040a15 0%,#061120 24%,#050d19 52%,#050b17 100%);
      overflow-x:hidden;
    }
    body::before{
      content:"";position:fixed;inset:0;pointer-events:none;opacity:.25;
      background:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
      background-size:48px 48px;
      mask-image:linear-gradient(180deg, rgba(255,255,255,.55), transparent 92%);
    }
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    .container{width:min(1240px, calc(100% - 40px));margin:0 auto}
    .section{padding:84px 0}
    .section-sm{padding:58px 0}
    .tagline{
      position:sticky;top:0;z-index:80;height:40px;display:flex;align-items:center;justify-content:center;gap:10px;
      background:rgba(5,11,23,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(117,164,255,.12);color:#bfd3ff;font-size:13px
    }
    .tagline i{width:8px;height:8px;border-radius:50%;background:var(--gradient);display:inline-block;box-shadow:0 0 14px rgba(33,212,255,.8)}
    header{
      position:sticky;top:40px;z-index:70;background:rgba(5,11,23,.76);backdrop-filter:blur(14px);border-bottom:1px solid rgba(117,164,255,.12)
    }
    .nav{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
    .brand-icon{
      width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,rgba(45,127,255,.25),rgba(33,212,255,.14));border:1px solid rgba(126,176,255,.25);box-shadow:var(--glow);position:relative
    }
    .brand-icon::before,.brand-icon::after{content:"";position:absolute;transform:rotate(45deg);border-radius:10px}
    .brand-icon::before{inset:10px;border:2px solid rgba(33,212,255,.95)}
    .brand-icon::after{inset:16px;border:2px solid rgba(138,91,255,.9)}
    .brand-name{font-size:24px;font-weight:800;line-height:1}
    .brand-sub{font-size:12px;color:var(--muted);margin-top:4px}
    .menu{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center}
    .menu a{padding:12px 14px;border-radius:14px;color:#dde8ff;font-weight:700;font-size:15px;transition:.3s ease}
    .menu a:hover,.menu a.active{background:rgba(45,127,255,.1);box-shadow:inset 0 0 0 1px rgba(117,164,255,.22), 0 10px 28px rgba(45,127,255,.12);color:#fff}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 24px;border-radius:16px;font-weight:800;font-size:16px;transition:.3s ease;border:1px solid transparent}
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{background:linear-gradient(135deg,#2e80ff 0%,#4aa8ff 100%);color:#fff;box-shadow:0 10px 24px rgba(45,127,255,.18)}
    .btn-outline{background:transparent;border-color:rgba(126,176,255,.18);color:#e8f1ff}
    .btn-outline:hover{background:rgba(45,127,255,.08)}

    .hero{padding:54px 0 34px}
    .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:38px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border-radius:999px;background:rgba(45,127,255,.08);border:1px solid rgba(126,176,255,.18);color:#d1ddff;font-size:13px;font-weight:700}
    .eyebrow::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--gradient);box-shadow:0 0 14px rgba(33,212,255,.75)}
    .hero h1{margin:18px 0 20px;font-size:clamp(36px,4.7vw,66px);line-height:1.08;letter-spacing:-1px}
    .hero h1 span{background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
    .hero p{margin:0;max-width:690px;color:#aabadd;font-size:18px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}
    .hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:28px;color:#bed0ef;font-size:14px}
    .hero-points b{display:inline-flex;align-items:center;gap:10px;font-weight:600}
    .hero-points b::before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,#21d4ff,#2d7fff);box-shadow:0 0 14px rgba(33,212,255,.6)}
    .hero-visual{
      min-height:520px;position:relative;overflow:visible;padding:0;
      background:none;border:none;box-shadow:none;display:flex;align-items:center;justify-content:center
    }
    .hero-visual img{position:relative;right:auto;bottom:auto;width:96%;max-width:760px;filter:drop-shadow(0 20px 36px rgba(0,0,0,.22));mix-blend-mode:screen;opacity:.98;-webkit-mask-image:radial-gradient(ellipse at center, #000 58%, rgba(0,0,0,.92) 72%, rgba(0,0,0,0) 100%);mask-image:radial-gradient(ellipse at center, #000 58%, rgba(0,0,0,.92) 72%, rgba(0,0,0,0) 100%)}

    .trust-bar{padding:22px 0 34px;border-top:1px solid rgba(117,164,255,.08);border-bottom:1px solid rgba(117,164,255,.08)}
    .trust-title{text-align:center;color:#c8d7f8;font-size:15px;margin-bottom:18px}
    .trust-logos{display:grid;grid-template-columns:repeat(8,1fr);gap:16px}
    .trust-logos span{min-height:66px;border-radius:18px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.02);border:1px solid rgba(117,164,255,.12);font-weight:800;color:#f2f6ff;letter-spacing:.6px;transition:.3s ease}
    .trust-logos span:hover{transform:translateY(-3px);box-shadow:var(--glow);border-color:rgba(117,164,255,.28)}

    .section-head{margin-bottom:30px}
    .section-head .mini{display:inline-block;color:#7caeff;font-size:14px;font-weight:800;margin-bottom:10px;letter-spacing:.3px}
    .section-head h2{margin:0 0 12px;font-size:40px;line-height:1.18;letter-spacing:-.4px}
    .section-head p{margin:0;max-width:820px;color:var(--muted);font-size:16px;line-height:1.9}

    .card{background:rgba(9,19,39,.78);border:1px solid rgba(114,162,255,.12);border-radius:18px;box-shadow:var(--shadow);transition:.35s ease;position:relative;overflow:hidden}
    .card::before{display:none}
    .card:hover{transform:translateY(-4px);border-color:rgba(114,162,255,.2);box-shadow:0 18px 40px rgba(0,0,0,.26)}

    .services{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
    .service{padding:24px}
    .icon{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(45,127,255,.22),rgba(138,91,255,.18));border:1px solid rgba(117,164,255,.18);box-shadow:var(--glow);margin-bottom:18px;font-size:22px;font-weight:800}
    .service h3{margin:0 0 12px;font-size:20px}
    .service p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}

    .stats-grid{display:grid;grid-template-columns:1.25fr .8fr;gap:22px}
    .stats-box{padding:26px}
    .stats-numbers{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
    .stats-numbers strong{display:block;font-size:42px;line-height:1.05;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
    .stats-numbers span{display:block;margin-top:8px;color:#d1ddf8;font-size:14px}
    .img-frame{border-radius:0;overflow:visible;border:none;background:transparent;box-shadow:none;display:flex;align-items:center;justify-content:center}
    .img-frame img{width:94%;height:auto;object-fit:contain;margin:8px auto 0;display:block;mix-blend-mode:screen;opacity:.97;-webkit-mask-image:radial-gradient(ellipse at center, #000 62%, rgba(0,0,0,.9) 76%, rgba(0,0,0,0) 100%);mask-image:radial-gradient(ellipse at center, #000 62%, rgba(0,0,0,.9) 76%, rgba(0,0,0,0) 100%)}
    .dist-wrap{display:flex;align-items:center;gap:28px}
    .donut{width:250px;height:250px;border-radius:50%;background:conic-gradient(#4b88ff 0 38%,#78b1ff 38% 60%,#f7c94b 60% 75%,#21d4ff 75% 85%,#8758ff 85% 93%,#ff7bd0 93% 100%);position:relative;box-shadow:0 0 36px rgba(45,127,255,.14)}
    .donut::before{content:"";position:absolute;inset:34px;border-radius:50%;background:linear-gradient(180deg,#081325,#07101d);border:1px solid rgba(117,164,255,.18)}
    .donut::after{content:"项目\A分布";white-space:pre;position:absolute;inset:0;display:grid;place-items:center;text-align:center;font-weight:800;font-size:24px;line-height:1.2}
    .legend{display:grid;gap:14px;flex:1}
    .legend div{display:flex;align-items:center;justify-content:space-between;gap:16px;color:#dce7ff}
    .legend b{display:flex;align-items:center;gap:12px;font-weight:600}
    .legend i{width:12px;height:12px;border-radius:50%;display:inline-block}

    .why-grid{display:grid;grid-template-columns:.94fr 1.06fr;gap:28px;align-items:center}
    .big-visual{padding:0;background:transparent;border-radius:0;overflow:visible;border:none}
    .big-visual img{width:100%;height:100%;object-fit:cover;display:block}
    .feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .feature{padding:22px}
    .feature h3{margin:0 0 10px;font-size:20px}
    .feature p{margin:0;color:var(--muted);line-height:1.8;font-size:15px}

    .process{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
    .step{padding:24px}
    .step .no{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--gradient);font-weight:800;margin-bottom:16px}
    .step h3{margin:0 0 10px;font-size:19px}
    .step p{margin:0;color:var(--muted);line-height:1.8;font-size:15px}

    .double-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .stack-panel{padding:26px}
    .chips{display:flex;flex-wrap:wrap;gap:12px}
    .chip{padding:12px 16px;border-radius:999px;background:rgba(255,255,255,.03);border:1px solid rgba(117,164,255,.14);color:#dce8ff;font-size:14px;font-weight:700;transition:.3s ease}
    .chip:hover{transform:translateY(-3px);box-shadow:var(--glow);border-color:rgba(117,164,255,.26)}

    .case-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
    .solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .media{padding:12px}
    .thumb{aspect-ratio:16/10;border-radius:18px;overflow:hidden;background:#071122;border:1px solid rgba(117,164,255,.12)}
    .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
    .media:hover .thumb img{transform:scale(1.05)}
    .pill{display:inline-flex;align-items:center;height:32px;padding:0 12px;margin:16px 0 12px;border-radius:999px;background:rgba(45,127,255,.14);border:1px solid rgba(117,164,255,.22);font-size:12px;font-weight:800;color:#dce9ff}
    .media h3{margin:0 0 10px;font-size:18px;line-height:1.45}
    .media p{margin:0;color:var(--muted);font-size:14px;line-height:1.78}

    .security{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
    .security .item{padding:22px}
    .security h3{margin:0 0 10px;font-size:18px}
    .security p{margin:0;color:var(--muted);font-size:14px;line-height:1.78}

    .reviews{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:stretch}
    .reviews .panel{padding:0;background:transparent;border:none;box-shadow:none}
    .reviews .panel img{width:100%;height:100%;object-fit:cover}
    .review-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .review{padding:24px}
    .review-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
    .avatar{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:var(--gradient);font-weight:800;box-shadow:var(--glow)}
    .stars{margin-top:8px;color:#ffc95d;letter-spacing:2px;font-size:14px}
    .review p{margin:0;color:var(--muted);line-height:1.9;font-size:15px}

    .seo-text .text-columns{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .seo-card{padding:28px}
    .seo-card h3{margin:0 0 12px;font-size:22px}
    .seo-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.95}

    .faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}.faq-col{display:grid;gap:16px}
    .faq details{border:1px solid rgba(117,164,255,.14);border-radius:14px;background:rgba(9,17,34,.82);box-shadow:0 10px 24px rgba(0,0,0,.18);padding:0 24px;transition:.3s ease}
    .faq details:hover{border-color:rgba(117,164,255,.28);box-shadow:0 24px 60px rgba(0,0,0,.34), 0 0 36px rgba(45,127,255,.08)}
    .faq summary{list-style:none;cursor:pointer;padding:24px 0;font-size:19px;font-weight:800;position:relative;padding-right:34px}
    .faq summary::-webkit-details-marker{display:none}
    .faq summary::after{content:"+";position:absolute;right:0;top:22px;font-size:28px;line-height:1;color:#7ab0ff;transition:.25s ease}
    .faq details[open] summary::after{content:"−"}
    .faq .answer{padding:0 0 24px;color:var(--muted);font-size:15px;line-height:1.95}

    .cta-full{padding:0;background:transparent}
    .cta-band{width:100%;padding:58px 0;border-top:1px solid rgba(117,164,255,.1);border-bottom:1px solid rgba(117,164,255,.1);background:radial-gradient(circle at 18% 40%, rgba(45,127,255,.16), transparent 28%), radial-gradient(circle at 80% 52%, rgba(138,91,255,.16), transparent 28%), linear-gradient(135deg,#091426,#0a1730)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .cta-box h2{margin:0 0 14px;font-size:42px;line-height:1.15}
    .cta-box p{margin:0;max-width:820px;color:#b5c7e8;font-size:17px;line-height:1.9}

    footer{padding:56px 0 28px}
    .foot{display:grid;grid-template-columns:1.1fr repeat(4,.9fr);gap:24px}
    .foot .about p{color:var(--muted);font-size:15px;line-height:1.9;margin:16px 0 22px;max-width:360px}
    .socials{display:flex;gap:10px;flex-wrap:wrap}
    .socials a{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:rgba(255,255,255,.03);border:1px solid rgba(117,164,255,.14);transition:.3s ease}
    .socials a:hover{transform:translateY(-3px);border-color:rgba(117,164,255,.25);box-shadow:var(--glow)}
    .foot h3{margin:0 0 16px;font-size:18px}
    .foot a{display:block;color:var(--muted);margin:0 0 12px;font-size:15px;transition:.25s ease}
    .foot a:hover{color:#fff;transform:translateX(4px)}
    .copy{margin-top:26px;padding-top:24px;border-top:1px solid rgba(117,164,255,.12);text-align:center;color:#97a9ce;font-size:14px}

    
    
    
    
    
    
    
    

    @media (max-width: 1200px){
      .services{grid-template-columns:repeat(3,1fr)}
      .case-grid{grid-template-columns:repeat(3,1fr)}
      .solution-grid{grid-template-columns:repeat(3,1fr)}
      .security{grid-template-columns:repeat(3,1fr)}
      .review-list{grid-template-columns:1fr}
      .foot{grid-template-columns:1.2fr 1fr 1fr}
      .trust-logos{grid-template-columns:repeat(4,1fr)}
    }
    @media (max-width: 992px){
      .menu{display:none}
      .hero-grid,.stats-grid,.why-grid,.double-grid,.reviews,.seo-text .text-columns{grid-template-columns:1fr}
      .hero-visual{min-height:380px}
      .hero-visual img{width:92%;right:auto}
      .process{grid-template-columns:repeat(2,1fr)}
      .feature-grid{grid-template-columns:1fr}
      .services,.solution-grid,.security,.case-grid{grid-template-columns:repeat(2,1fr)}
      .review-list{grid-template-columns:1fr}
      .foot{grid-template-columns:1fr 1fr}
      .cta-box{display:grid;grid-template-columns:1fr}
      .dist-wrap{flex-direction:column;align-items:flex-start}
      .stats-numbers{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 640px){
      .container{width:min(100% - 24px, 1240px)}
      .hero h1{font-size:38px}
      .hero p{font-size:16px}
      .section{padding:60px 0}
      .section-head h2,.cta-box h2{font-size:30px}
      .services,.solution-grid,.security,.case-grid,.process,.foot,.trust-logos,.faq{grid-template-columns:1fr}
      .stats-numbers{grid-template-columns:1fr 1fr}
      .donut{width:220px;height:220px}
      
    }


/* Exchange development page */
.exchange-page{
  background:
    radial-gradient(circle at 10% 0%, rgba(6,181,139,.14), transparent 24%),
    radial-gradient(circle at 100% 18%, rgba(245,158,11,.10), transparent 22%),
    linear-gradient(180deg,#040b13 0%,#081219 30%,#061017 100%);
}
.exchange-page .tagline,
.exchange-page header{border-color:rgba(80,220,190,.12)}
.exchange-page .menu a:hover,.exchange-page .menu a.active{background:rgba(16,185,129,.10);box-shadow:inset 0 0 0 1px rgba(80,220,190,.18),0 10px 24px rgba(16,185,129,.10)}
.exchange-page .eyebrow,.exchange-page .pill{background:rgba(16,185,129,.08);border-color:rgba(80,220,190,.18)}
.exchange-page .section-head .mini{color:#61eec8}
.exchange-page .hero h1 span,
.exchange-page .metric strong,
.exchange-page .market-box strong,
.exchange-page .stats-numbers strong{background:linear-gradient(135deg,#18d5a5 0%,#7ef3d2 48%,#f6c453 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.exchange-page .btn-primary{background:linear-gradient(135deg,#0fb98f 0%,#2dd4bf 52%,#f6c453 100%);box-shadow:0 12px 28px rgba(16,185,129,.18)}
.exchange-page .btn-outline:hover{background:rgba(16,185,129,.08)}
.exchange-page .card{border-color:rgba(80,220,190,.12);background:rgba(6,17,25,.82)}
.exchange-page .card:hover{border-color:rgba(80,220,190,.22);box-shadow:0 18px 42px rgba(0,0,0,.28)}
.exchange-page .icon{background:linear-gradient(135deg,rgba(16,185,129,.22),rgba(245,158,11,.12));border-color:rgba(80,220,190,.18);box-shadow:0 0 24px rgba(16,185,129,.14)}
.exchange-page .hero-grid.exchange-hero{grid-template-columns:1fr .96fr;gap:42px}
.exchange-page .hero-visual img{max-width:760px;mix-blend-mode:screen;opacity:.98;filter:drop-shadow(0 24px 52px rgba(0,0,0,.24))}
.exchange-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}
.metric{padding:18px 18px 16px;border:1px solid rgba(80,220,190,.12);border-radius:16px;background:rgba(255,255,255,.02)}
.metric strong{display:block;font-size:34px;line-height:1.08}
.metric span{display:block;margin-top:8px;color:var(--muted);font-size:14px;line-height:1.6}
.exchange-intro{display:grid;grid-template-columns:1.02fr .98fr;gap:24px;align-items:center}
.exchange-intro .text p + p{margin-top:14px}
.module-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.market-boxes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.market-box{padding:24px}
.market-box strong{display:block;font-size:30px;line-height:1.05}
.market-box span{display:block;color:#d8e4ff;font-weight:700;margin-top:8px}
.market-box p{margin:12px 0 0;color:var(--muted);font-size:14px;line-height:1.8}
.exchange-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}
.exchange-list{display:grid;gap:14px}
.exchange-list .li{padding:16px 18px;border:1px solid rgba(80,220,190,.12);border-radius:16px;background:rgba(255,255,255,.02)}
.exchange-list h3{margin:0 0 8px;font-size:18px}
.exchange-list p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}
.exchange-faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.exchange-faq-col{display:grid;gap:16px}
.note-strip{padding:22px 24px;border-radius:16px;border:1px solid rgba(80,220,190,.12);background:linear-gradient(90deg,rgba(16,185,129,.08),rgba(245,158,11,.04));color:#d8e9ff;line-height:1.9}


.exchange-page 
@media (max-width: 1200px){
  .module-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width: 992px){
  .exchange-page .hero-grid.exchange-hero,.exchange-intro,.exchange-split{grid-template-columns:1fr}
  .module-grid{grid-template-columns:repeat(2,1fr)}
  .exchange-kpis,.market-boxes,.exchange-faq{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 640px){
  .module-grid,.exchange-kpis,.market-boxes,.exchange-faq{grid-template-columns:1fr}
}