*{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:#12142c;
    line-height:1.72;
    background-color:#f7f8ff;
    background-image:
      radial-gradient(820px 460px at 6% -6%, rgba(108,76,255,.16), transparent 62%),
      radial-gradient(760px 420px at 98% 6%, rgba(0,194,255,.15), transparent 62%),
      radial-gradient(680px 380px at 12% 46%, rgba(255,77,157,.09), transparent 64%),
      radial-gradient(900px 520px at 50% 102%, rgba(108,76,255,.12), transparent 66%);
    background-repeat:no-repeat;
  }
  img{max-width:100%;}
  a{color:inherit;}
  h1,h2,h3,h4{line-height:1.35;letter-spacing:.2px;}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

  /* header */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid #e6e9f8;}
  .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px;position:relative;}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
  .ai-page-logo{max-height:34px;width:auto;display:block;}
  .brand-name{font-size:17px;font-weight:700;color:#12142c;letter-spacing:.5px;}
  .nav-links{display:flex;align-items:center;justify-content:center;gap:0;list-style:none;margin:0;padding:0;flex:1 1 auto;}
  .nav-links li{flex:0 0 auto;}
  .nav-links a{display:block;padding:9px 11px;border-radius:10px;font-size:14px;color:#41476a;text-decoration:none;white-space:nowrap;transition:color .2s ease,background-color .2s ease;}
  .nav-links a:hover{color:#5b3bff;background:rgba(108,76,255,.09);}
  .nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 26px;border-radius:12px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease;}
  .btn-primary{color:#fff;background:linear-gradient(120deg,#6c4cff,#00a8ff 58%,#ff4d9d);box-shadow:0 10px 24px rgba(89,72,214,.30);}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(89,72,214,.38);}
  .btn-ghost{color:#3b3f66;background:#fff;border-color:#dfe3f5;}
  .btn-ghost:hover{transform:translateY(-2px);border-color:#bfb9ff;color:#5b3bff;box-shadow:0 12px 26px rgba(60,64,140,.12);}
  .btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
  .nav-toggle{display:none;width:42px;height:42px;border-radius:11px;border:1px solid #dfe3f5;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0;}
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#3b3f66;transition:transform .25s ease,opacity .25s ease;}
  .site-header.open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .site-header.open .nav-toggle span:nth-child(2){opacity:0;}
  .site-header.open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  /* hero */
  .hero{position:relative;overflow:hidden;padding:78px 0 62px;}
  .hero::before{content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(108,76,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(108,76,255,.055) 1px,transparent 1px);
    background-size:58px 58px;}
  .hero-blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;pointer-events:none;}
  .hero-blob.b1{width:320px;height:320px;left:-70px;top:-60px;background:radial-gradient(circle,#9c8bff,transparent 70%);animation:floaty 13s ease-in-out infinite;}
  .hero-blob.b2{width:360px;height:360px;right:-90px;top:20px;background:radial-gradient(circle,#7ddcff,transparent 70%);animation:floaty 16s ease-in-out infinite reverse;}
  @keyframes floaty{0%,100%{transform:translate3d(0,0,0);}50%{transform:translate3d(0,26px,0);}}
  .hero-inner{position:relative;z-index:2;max-width:900px;}
  .pill{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:#fff;border:1px solid #dcdcff;color:#5b3bff;font-size:13px;font-weight:600;box-shadow:0 8px 20px rgba(89,72,214,.10);}
  .pill::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(120deg,#6c4cff,#00c2ff);}
  .hero h1{font-size:clamp(29px,4.6vw,46px);margin:22px 0 18px;font-weight:800;color:#0e1026;}
  .hero h1 em{font-style:normal;color:#5b3bff;}
  .lead{font-size:clamp(15px,1.6vw,17px);color:#4a5075;margin:0 0 30px;max-width:760px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
  .hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px;}
  .stat{background:rgba(255,255,255,.9);border:1px solid #e4e7f8;border-radius:16px;padding:16px 18px;box-shadow:0 10px 26px rgba(40,46,110,.06);transition:transform .25s ease,box-shadow .25s ease;}
  .stat:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(60,64,140,.13);}
  .stat strong{display:block;font-size:23px;font-weight:800;color:#5b3bff;letter-spacing:.5px;}
  .stat span{display:block;font-size:13px;color:#5b6182;margin-top:2px;}

  /* section base */
  .section{padding:66px 0;}
  .section-head{max-width:780px;margin-bottom:34px;}
  .eyebrow{display:inline-block;margin:0 0 10px;font-size:13px;font-weight:700;letter-spacing:2px;color:#5b3bff;}
  .section-head h2{font-size:clamp(23px,3.2vw,33px);margin:0 0 12px;font-weight:800;color:#0e1026;}
  .section-desc{margin:0;color:#545a7d;font-size:15px;}
  .cards-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:18px;align-items:stretch;}
  .card{background:#fff;border:1px solid #e6e9f8;border-radius:16px;padding:22px;box-shadow:0 6px 20px rgba(30,36,90,.05);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;}
  .card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(60,64,140,.13);border-color:#c9c6ff;}
  .card h3{font-size:16.5px;margin:0 0 8px;font-weight:700;color:#141732;}
  .card p{margin:0;font-size:14px;color:#5a6080;}
  .svc-card::before{content:"";display:block;width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,#6c4cff,#00c2ff 55%,#ff4d9d);margin-bottom:14px;opacity:.92;}
  .svc-card:nth-child(3n+2)::before{background:linear-gradient(135deg,#00c2ff,#6c4cff 60%,#ff4d9d);}
  .svc-card:nth-child(3n)::before{background:linear-gradient(135deg,#ff4d9d,#6c4cff 55%,#00c2ff);}

  /* about */
  .about-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:32px;align-items:start;}
  .media{width:100%;border-radius:16px;overflow:hidden;background:#eef0fb;line-height:0;border:1px solid #e6e9f8;}
  .media img{width:100%;height:auto;display:block;}
  .point-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
  .point-list li{background:#fff;border:1px solid #e6e9f8;border-left:3px solid #6c4cff;border-radius:12px;padding:13px 16px;transition:transform .25s ease,box-shadow .25s ease;}
  .point-list li:hover{transform:translateX(3px);box-shadow:0 12px 26px rgba(60,64,140,.10);}
  .point-list strong{display:block;font-size:15px;color:#141732;}
  .point-list span{font-size:13.5px;color:#5a6080;}

  /* onestop */
  .feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px;}
  .feat{background:#fff;border:1px solid #e6e9f8;border-radius:16px;padding:22px;position:relative;overflow:hidden;transition:transform .28s ease,box-shadow .28s ease;}
  .feat::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,#6c4cff,#00c2ff,#ff4d9d);}
  .feat:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(60,64,140,.13);}
  .feat h3{margin:0 0 8px;font-size:16.5px;}
  .feat p{margin:0;font-size:14px;color:#5a6080;}

  /* tags */
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .tag{display:inline-block;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid #dfe3f5;color:#42486c;font-size:13px;transition:border-color .22s ease,color .22s ease,transform .22s ease;}
  .tag:hover{transform:translateY(-2px);border-color:#bfb9ff;color:#5b3bff;}

  /* industry */
  .ind-card{background:#fff;border:1px solid #e6e9f8;border-radius:16px;padding:20px 22px;transition:transform .26s ease,box-shadow .26s ease;}
  .ind-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(60,64,140,.12);}
  .ind-card h3{margin:0 0 6px;font-size:16px;color:#141732;}
  .ind-card p{margin:0;font-size:13.8px;color:#5a6080;}

  /* steps */
  .steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;}
  .step{background:#fff;border:1px solid #e6e9f8;border-radius:16px;padding:20px;position:relative;transition:transform .26s ease,box-shadow .26s ease;}
  .step:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(60,64,140,.12);}
  .step-num{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:rgba(108,76,255,.12);color:#5b3bff;font-weight:800;font-size:14px;margin-bottom:12px;}
  .step h3{margin:0 0 6px;font-size:15.5px;}
  .step p{margin:0;font-size:13.6px;color:#5a6080;}

  /* cases */
  .case-card{background:#fff;border:1px solid #e6e9f8;border-radius:16px;overflow:hidden;transition:transform .28s ease,box-shadow .28s ease;}
  .case-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(60,64,140,.14);}
  .case-card .media{border:none;border-radius:0;}
  .case-body{padding:18px 20px 22px;}
  .case-body h3{margin:0 0 6px;font-size:16px;color:#141732;}
  .case-body p{margin:0;font-size:13.8px;color:#5a6080;}

  /* compare */
  .compare-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:start;}
  .score-card{background:linear-gradient(150deg,rgba(108,76,255,.12),rgba(0,194,255,.12) 55%,rgba(255,77,157,.12));border:1px solid #dfe3f8;border-radius:20px;padding:26px;}
  .score-stars{font-size:20px;letter-spacing:4px;color:#ff9d00;}
  .score-num{font-size:44px;font-weight:800;color:#12142c;line-height:1.1;margin:8px 0 4px;}
  .score-num span{font-size:16px;font-weight:600;color:#5a6080;margin-left:6px;}
  .score-card p{margin:0 0 16px;font-size:14px;color:#4a5075;}
  .score-list{list-style:none;margin:0;padding:0;display:grid;gap:9px;}
  .score-list li{position:relative;padding-left:20px;font-size:14px;color:#333a5e;}
  .score-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:linear-gradient(120deg,#6c4cff,#00c2ff);}
  .table-wrap{overflow-x:auto;border:1px solid #e6e9f8;border-radius:16px;background:#fff;-webkit-overflow-scrolling:touch;}
  table{border-collapse:collapse;width:100%;min-width:620px;font-size:14px;}
  thead th{background:#f2f3ff;color:#232a52;text-align:left;font-weight:700;padding:14px 16px;border-bottom:1px solid #e2e6f7;white-space:nowrap;}
  tbody td{padding:13px 16px;border-bottom:1px solid #eef0fa;color:#4a5075;vertical-align:top;}
  tbody tr:last-child td{border-bottom:none;}
  tbody td:first-child{font-weight:600;color:#141732;white-space:nowrap;}
  tbody tr:hover td{background:#fafaff;}
  .badge-best{display:inline-block;padding:3px 10px;border-radius:999px;background:rgba(108,76,255,.12);color:#5b3bff;font-size:12px;font-weight:700;}

  /* testimonials */
  .quote-card{background:#fff;border:1px solid #e6e9f8;border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:16px;transition:transform .28s ease,box-shadow .28s ease;}
  .quote-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(60,64,140,.13);}
  .quote-card::before{content:"";display:block;width:34px;height:4px;border-radius:4px;background:linear-gradient(90deg,#6c4cff,#00c2ff,#ff4d9d);}
  .quote-card p{margin:0;font-size:14.2px;color:#3c4260;}
  .who{margin-top:auto;}
  .who strong{display:block;font-size:14px;color:#141732;}
  .who span{font-size:12.8px;color:#767ca0;}

  /* form */
  .contact-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:26px;align-items:start;}
  .info-card{background:#fff;border:1px solid #e6e9f8;border-radius:18px;padding:24px;box-shadow:0 8px 24px rgba(30,36,90,.06);}
  .info-card h3{margin:0 0 14px;font-size:17px;}
  .info-row{display:flex;gap:10px;font-size:14px;color:#4a5075;padding:8px 0;border-bottom:1px dashed #e8ebf8;}
  .info-row:last-of-type{border-bottom:none;}
  .info-row b{color:#141732;font-weight:600;min-width:76px;flex:0 0 auto;}
  .qr-box{margin-top:16px;display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
  .qr-box .media{max-width:170px;border-radius:14px;}
  .qr-box small{font-size:13px;color:#5a6080;}
  .form-card{background:#fff;border:1px solid #e6e9f8;border-radius:18px;padding:26px;box-shadow:0 8px 24px rgba(30,36,90,.06);}
  .form-card h3{margin:0 0 6px;font-size:18px;}
  .form-card .tip{margin:0 0 20px;font-size:13.5px;color:#6a7092;}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:7px;}
  .field.full{grid-column:1/-1;}
  .field label{font-size:13.5px;font-weight:600;color:#333a5e;}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 14px;font-size:14px;font-family:inherit;color:#12142c;background:#fbfbff;
    border:1px solid #dfe3f5;border-radius:10px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{resize:vertical;min-height:110px;}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:#8a7bff;box-shadow:0 0 0 3px rgba(108,76,255,.14);}
  .field input::placeholder,.field textarea::placeholder{color:#9aa0bd;}
  .form-submit{margin-top:20px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
  .form-submit .btn{min-width:170px;}
  .form-submit small{font-size:13px;color:#767ca0;}

  /* faq */
  .faq-list{max-width:900px;}
  .faq-item{background:#fff;border:1px solid #e6e9f8;border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
  .faq-item:hover{border-color:#c9c6ff;box-shadow:0 10px 26px rgba(60,64,140,.09);}
  .faq-item summary{cursor:pointer;list-style:none;padding:16px 48px 16px 20px;font-weight:600;font-size:15px;color:#141732;position:relative;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;line-height:1;color:#5b3bff;transition:transform .25s ease;}
  .faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
  .faq-item p{margin:0;padding:0 20px 18px;font-size:14px;color:#5a6080;}

  /* wiki & news */
  .wiki-card{background:#fff;border:1px solid #e6e9f8;border-radius:14px;padding:18px 20px;transition:transform .25s ease,box-shadow .25s ease;}
  .wiki-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(60,64,140,.11);}
  .wiki-card h3{margin:0 0 6px;font-size:15px;}
  .wiki-card p{margin:0;font-size:13.6px;color:#5a6080;}
  .news-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
  .news-list a{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:baseline;justify-content:space-between;padding:15px 20px;background:#fff;border:1px solid #e6e9f8;border-radius:14px;text-decoration:none;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;}
  .news-list a:hover{transform:translateX(4px);border-color:#c9c6ff;box-shadow:0 12px 28px rgba(60,64,140,.11);}
  .news-list strong{font-size:14.6px;color:#141732;font-weight:600;}
  .news-list em{font-style:normal;font-size:13px;color:#5b3bff;}

  /* partner */
  .partner-box{background:linear-gradient(125deg,rgba(108,76,255,.13),rgba(0,194,255,.11) 52%,rgba(255,77,157,.13));border:1px solid #dfe3f8;border-radius:20px;padding:32px;}
  .partner-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center;}
  .partner-box h2{margin:0 0 12px;font-size:clamp(22px,3vw,30px);color:#0e1026;}
  .partner-box p{margin:0 0 18px;font-size:14.6px;color:#41476a;}
  .partner-points{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
  .partner-points li{background:rgba(255,255,255,.86);border:1px solid #e2e6f8;border-radius:12px;padding:12px 16px;font-size:14px;color:#333a5e;}

  /* help */
  .help-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;}
  .help-link{display:block;text-decoration:none;background:#fff;border:1px solid #e6e9f8;border-radius:14px;padding:18px 20px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;}
  .help-link:hover{transform:translateY(-3px);border-color:#c9c6ff;box-shadow:0 14px 30px rgba(60,64,140,.11);}
  .help-link strong{display:block;font-size:15px;color:#141732;margin-bottom:4px;}
  .help-link span{font-size:13.4px;color:#5a6080;}

  /* footer */
  .site-footer{background:#eceffb;border-top:1px solid #dee2f3;color:#2a2f4a;padding:38px 0 22px;}
  .footer-top{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:start;}
  .footer-brand p{margin:10px 0 0;font-size:13.8px;color:#3b4166;}
  .footer-brand .footer-contact{color:#4a5075;}
  .footer-links h3{margin:0 0 12px;font-size:15px;color:#141732;}
  .footer-links ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 16px;}
  .footer-links a{font-size:13.6px;color:#3b4166;text-decoration:none;transition:color .2s ease;}
  .footer-links a:hover{color:#5b3bff;}
  .footer-bottom{margin-top:26px;padding-top:16px;border-top:1px solid #dde1f2;font-size:13px;color:#4a5075;}

  /* float dock */
  .float-dock{position:fixed;right:18px;bottom:18px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
  .dock-btn{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:16px;border:none;cursor:pointer;font-size:13px;font-weight:700;color:#fff;background:linear-gradient(135deg,#6c4cff,#00a8ff);box-shadow:0 12px 26px rgba(70,70,160,.30);transition:transform .22s ease,box-shadow .22s ease;}
  .dock-btn:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(70,70,160,.38);}
  .dock-top{background:#fff;color:#3b3f66;border:1px solid #dfe3f5;box-shadow:0 10px 22px rgba(40,46,110,.14);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .22s ease;}
  .dock-top.show{opacity:1;visibility:visible;}
  .service-panel{position:fixed;right:18px;bottom:132px;z-index:81;width:238px;background:#fff;border:1px solid #e6e9f8;border-radius:16px;box-shadow:0 24px 48px rgba(30,36,90,.20);padding:16px;display:none;}
  .service-panel.open{display:block;animation:pop .22s ease both;}
  @keyframes pop{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
  .service-panel h4{margin:0 0 10px;font-size:14px;color:#141732;}
  .service-panel .media{border-radius:12px;margin-bottom:10px;}
  .service-panel p{margin:0 0 6px;font-size:13px;color:#4a5075;}
  .service-panel .btn{width:100%;margin-top:10px;}

  /* reveal */
  html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
  html.js .reveal.is-visible{opacity:1;transform:none;}

  /* responsive */
  @media (max-width:1080px){
    .nav-toggle{display:flex;}
    .nav-links{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid #e6e9f8;box-shadow:0 22px 34px rgba(20,24,60,.10);padding:8px 18px 16px;}
    .site-header.open .nav-links{display:flex;}
    .nav-links a{padding:12px 4px;border-bottom:1px dashed #e8ebf8;border-radius:0;font-size:14.5px;}
    .nav-links li:last-child a{border-bottom:none;}
    .nav-cta{display:none;}
  }
  @media (max-width:900px){
    .about-grid,.compare-grid,.contact-grid,.partner-inner,.footer-top{grid-template-columns:1fr;}
    .hero-stats{grid-template-columns:repeat(2,1fr);}
    .form-grid{grid-template-columns:1fr;}
  }
  @media (max-width:640px){
    .section{padding:52px 0;}
    .hero{padding:56px 0 48px;}
    .stat strong{font-size:20px;}
    .score-num{font-size:36px;}
    .partner-box{padding:24px;}
    .form-card,.info-card{padding:20px;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    html.js .reveal{opacity:1;transform:none;transition:none;}
    .hero-blob.b1,.hero-blob.b2{animation:none;}
  }