:root{
      --ink:#201b35;
      --muted:#6f6882;
      --purple:#6e35d8;
      --purple-dark:#35156f;
      --violet:#9b63f1;
      --lavender:#f3efff;
      --line:#e6def5;
      --white:#fff;
      --warm:#fbfaff;
      --green:#1a9b72;
      --shadow:0 16px 40px rgba(57,27,112,.12);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--warm);
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);
      border-bottom:1px solid var(--line);backdrop-filter:blur(12px)
    }
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:12px;flex:none}
    .ai-page-logo{width:132px}
    .brand-copy{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:12px;white-space:nowrap}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;padding:8px 10px;color:#514968;white-space:nowrap}
    .nav-links a:hover{color:var(--purple)}
    .nav-cta,.primary-btn{background:var(--purple);color:#fff!important;border-radius:6px;padding:11px 18px!important;font-weight:700;box-shadow:0 8px 18px rgba(110,53,216,.24)}
    .nav-toggle{display:none;border:0;background:var(--lavender);color:var(--purple);padding:9px 12px;border-radius:6px;font-size:20px}
    .hero{position:relative;overflow:hidden;background:#35156f;color:#fff;padding:92px 0 78px}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(255,255,255,.14);transform:rotate(28deg)}
    .hero:before{width:420px;height:420px;right:-120px;top:-170px;border-radius:40px}
    .hero:after{width:230px;height:230px;left:-100px;bottom:-100px;border-radius:50%}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:56px;align-items:center;position:relative;z-index:1}
    .eyebrow{color:#d6c2ff;font-weight:700;letter-spacing:2px;font-size:13px;margin:0 0 15px}
    h1,h2,h3{line-height:1.25;margin:0 0 16px}
    h1{font-size:clamp(36px,5vw,68px);max-width:680px;letter-spacing:0}
    .hero p{font-size:18px;color:#e8ddff;max-width:650px;margin:0 0 28px}
    .actions{display:flex;flex-wrap:wrap;gap:12px}
    .hero .primary-btn{background:#fff;color:var(--purple)!important}
    .secondary-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.45);color:#fff;padding:10px 18px;border-radius:6px;font-weight:700}
    .hero-panel{border:1px solid rgba(255,255,255,.23);padding:24px;background:rgba(255,255,255,.08);border-radius:12px}
    .hero-panel h3{font-size:20px}
    .hero-panel p{font-size:14px;margin:0 0 18px;color:#e9ddff}
    .metric-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .metric{padding:15px;background:rgba(255,255,255,.1);border-radius:8px}
    .metric strong{display:block;font-size:24px;color:#fff}
    .metric span{font-size:12px;color:#d9caff}
    .section{padding:82px 0}
    .section.alt{background:#f3efff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}
    .section-head h2{font-size:clamp(28px,4vw,44px)}
    .section-head p{max-width:560px;color:var(--muted);margin:0}
    .kicker{display:block;color:var(--purple);font-size:13px;font-weight:800;letter-spacing:1.5px;margin-bottom:10px}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
    .text-panel{padding:30px;background:#fff;border-left:4px solid var(--purple);box-shadow:var(--shadow)}
    .text-panel p{color:var(--muted);margin:0 0 16px}
    .pill-list{display:flex;flex-wrap:wrap;gap:8px}
    .pill{display:inline-block;background:var(--lavender);color:var(--purple);padding:6px 12px;border-radius:20px;font-size:13px}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
    .stat{background:#fff;border:1px solid var(--line);padding:22px;text-align:center;border-radius:8px}
    .stat strong{display:block;color:var(--purple);font-size:30px}
    .stat span{font-size:13px;color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{background:#fff;border:1px solid var(--line);padding:24px;border-radius:8px;transition:.25s ease}
    .service-card:hover,.review:hover,.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .service-icon{width:42px;height:42px;display:grid;place-items:center;background:var(--purple);color:#fff;font-weight:800;border-radius:7px;margin-bottom:17px}
    .service-card h3{font-size:18px}
    .service-card p{font-size:14px;color:var(--muted);margin:0}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
    .step{padding:26px 18px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border-right:0}
    .step-no{font-size:34px;font-weight:800;color:var(--violet)}
    .step h3{font-size:17px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline-item{padding:23px;background:#fff;border-top:3px solid var(--purple);border-radius:6px}
    .timeline-item strong{color:var(--purple);display:block;margin-bottom:8px}
    .timeline-item p{font-size:14px;color:var(--muted);margin:0}
    .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .solution{padding:24px;background:#fff;border:1px solid var(--line);border-radius:8px}
    .solution h3{font-size:18px}
    .solution p{font-size:14px;color:var(--muted);margin:0}
    .network{display:flex;flex-wrap:wrap;gap:9px;background:#fff;padding:28px;border:1px solid var(--line);border-radius:8px}
    .network span{padding:9px 15px;background:#faf8ff;border:1px solid #ded0fa;border-radius:5px;color:#594090;font-size:14px}
    .compare-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:8px}
    table{width:100%;min-width:760px;border-collapse:collapse}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
    th{background:#eee8ff;color:var(--purple-dark);font-weight:800}
    tr:last-child td{border-bottom:0}
    .rating{display:flex;align-items:center;gap:18px;margin-bottom:22px}
    .rating strong{font-size:42px;color:var(--purple)}
    .stars{color:#f0a323;font-size:22px;letter-spacing:3px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case-card{background:#fff;border-radius:8px;overflow:hidden;border:1px solid var(--line);transition:.25s ease}
    .case-card .media{aspect-ratio:16/9;overflow:hidden;background:#eee8ff}
    .case-card img{width:100%;height:100%;object-fit:cover}
    .case-content{padding:20px}
    .case-content h3{font-size:18px}
    .case-content p{font-size:14px;color:var(--muted);margin:0}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#fff;padding:23px;border:1px solid var(--line);border-radius:8px;transition:.25s ease}
    .review p{margin:0 0 16px;color:#514968;font-size:14px}
    .review strong{font-size:14px}
    .review span{display:block;color:var(--muted);font-size:12px}
    .price-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:start}
    .price-box{background:#35156f;color:#fff;padding:30px;border-radius:8px}
    .price-box h3{font-size:26px}
    .price-box p{color:#e8ddff}
    .price-points{display:grid;gap:11px}
    .price-points div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:10px;font-size:14px}
    .article-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article-list a{background:#fff;border:1px solid var(--line);padding:17px;border-radius:6px;font-size:14px;color:#4c397d;transition:.2s}
    .article-list a:hover{border-color:var(--purple);color:var(--purple)}
    .faq{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
    details{background:#fff;border:1px solid var(--line);border-radius:6px;padding:16px 18px}
    summary{cursor:pointer;font-weight:700;color:#332456}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .form-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
    .contact-info{background:#35156f;color:#fff;padding:30px;border-radius:8px}
    .contact-info p{color:#e8ddff;font-size:14px}
    .contact-info strong{color:#fff}
    form{background:#fff;padding:28px;border:1px solid var(--line);border-radius:8px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
    label{display:grid;gap:7px;font-weight:700;font-size:14px}
    input,select,textarea{width:100%;font:inherit;border:1px solid #d8cdeb;border-radius:5px;padding:11px 12px;color:var(--ink);background:#fff}
    textarea{min-height:130px;resize:vertical}
    .full{grid-column:1/-1}
    button{border:0;cursor:pointer;font:inherit}
    .form-submit{justify-self:start;background:var(--purple);color:#fff;padding:12px 24px;border-radius:6px;font-weight:700}
    .footer{background:#24153e;color:#eee5ff;padding:48px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:35px}
    .footer h3{color:#fff;font-size:17px}
    .footer p,.footer a{color:#cfc1e8;font-size:13px}
    .footer-links{display:flex;flex-wrap:wrap;gap:9px 16px}
    .copyright{border-top:1px solid rgba(255,255,255,.16);margin-top:30px;padding-top:18px;font-size:12px;color:#b8a9d0}
    .float-contact{position:fixed;right:20px;bottom:20px;z-index:18;background:#fff;width:76px;padding:7px;border-radius:8px;box-shadow:0 8px 26px rgba(38,18,73,.22);text-align:center;font-size:11px;color:var(--purple)}
    .float-contact img{width:62px;margin:0 auto 3px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links a{padding-left:6px;padding-right:6px;font-size:13px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-list{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:780px){
      .container{width:min(100% - 28px,620px)}
      .nav-wrap{min-height:68px}
      .brand-copy{display:none}
      .nav-toggle{display:block}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:10px 14px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 22px rgba(45,22,88,.1);justify-content:flex-start}
      .nav-links.open{display:flex}
      .nav-links a{width:50%;padding:10px 7px}
      .nav-links .nav-cta{width:auto;margin:5px 0}
      .hero{padding:64px 0 55px}
      .hero-grid,.intro-grid,.price-grid,.form-layout{grid-template-columns:1fr;gap:25px}
      h1{font-size:40px}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .stats{grid-template-columns:repeat(2,1fr)}
      .workflow{grid-template-columns:1fr;border-top:0}
      .step{border-right:0;border-bottom:1px solid var(--line);padding:18px 0}
      .timeline,.solution-grid,.case-grid,.reviews,.faq{grid-template-columns:1fr}
      .article-list{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr;gap:22px}
      form{grid-template-columns:1fr;padding:20px}
      .full{grid-column:auto}
      .float-contact{right:12px;bottom:12px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }