:root{
      --ink:#172033;
      --muted:#607087;
      --line:#dce5ee;
      --paper:#f5f8fb;
      --white:#fff;
      --navy:#101a35;
      --cyan:#23d6dc;
      --pink:#ff4f9a;
      --lime:#b7ed55;
      --violet:#655cff;
      --shadow:0 16px 40px rgba(24,43,75,.1);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.65}
    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:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;flex:none}
    .ai-page-logo{width:142px}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:13px;color:#40506a;padding:8px 9px;transition:.25s}
    .nav-links a:hover{color:#e33381}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;border:0;cursor:pointer;border-radius:8px;padding:12px 20px;font-weight:700;transition:transform .25s,box-shadow .25s,background .25s}
    .nav-cta{background:var(--navy);color:#fff;margin-left:12px;font-size:13px}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(16,26,53,.2)}
    .button-primary{background:var(--cyan);color:#071827}
    .button-dark{background:var(--navy);color:#fff}
    .button-light{background:#fff;color:var(--navy)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 11px;font-size:20px}
    .hero{position:relative;overflow:hidden;background:var(--navy);color:#fff;padding:92px 0 82px}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(35,214,220,.3);transform:rotate(25deg);pointer-events:none}
    .hero:before{width:280px;height:280px;right:5%;top:-130px;border-radius:42px}
    .hero:after{width:180px;height:180px;left:-80px;bottom:-80px;border-radius:50%;border-color:rgba(255,79,154,.45)}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center;position:relative;z-index:1}
    .eyebrow,.section-kicker{font-size:12px;font-weight:800;letter-spacing:2px;text-transform:uppercase}
    .eyebrow{color:var(--cyan);margin-bottom:16px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.08;letter-spacing:0;margin-bottom:24px;max-width:720px}
    .hero-copy{font-size:18px;color:#d6e3f2;max-width:630px;margin-bottom:32px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{margin-top:20px;font-size:13px;color:#a9bad1}
    .signal-board{border-left:3px solid var(--pink);padding-left:24px}
    .signal-board h2{font-size:22px;margin-bottom:16px}
    .signal-row{display:flex;justify-content:space-between;gap:18px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:14px}
    .signal-row strong{color:var(--lime);white-space:nowrap}
    .section{padding:86px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}
    .section-kicker{color:#e13b85;margin-bottom:9px}
    h2{font-size:clamp(28px,4vw,44px);line-height:1.16;margin-bottom:12px}
    .section-intro{color:var(--muted);max-width:650px;margin-bottom:0}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-34px;position:relative;z-index:3}
    .stat{background:#fff;border:1px solid var(--line);padding:22px;border-top:4px solid var(--cyan);box-shadow:var(--shadow)}
    .stat:nth-child(2){border-top-color:var(--pink)}.stat:nth-child(3){border-top-color:var(--lime)}.stat:nth-child(4){border-top-color:var(--violet)}
    .stat strong{display:block;font-size:30px;color:var(--navy);line-height:1.2;margin-bottom:6px}
    .stat span{color:var(--muted);font-size:13px}
    .about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}
    .lead{font-size:20px;color:var(--navy);font-weight:700}
    .about-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}
    .about-list div{padding:15px 16px;background:#fff;border-left:3px solid var(--cyan);box-shadow:0 8px 24px rgba(24,43,75,.06);font-size:14px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{background:#fff;border:1px solid var(--line);padding:22px;min-height:188px;transition:.25s}
    .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--cyan)}
    .service-card b{display:inline-block;font-size:25px;color:var(--pink);margin-bottom:12px}
    .service-card h3{font-size:18px;margin-bottom:8px}
    .service-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .band{background:#eaf2f7}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid #b9cad8}
    .step{position:relative;padding:28px 20px 15px;border-right:1px solid #b9cad8}
    .step:last-child{border-right:0}
    .step-number{font-size:36px;font-weight:800;color:var(--pink);line-height:1}
    .step h3{font-size:17px;margin:13px 0 7px}.step p{font-size:13px;color:var(--muted);margin:0}
    .tag-cloud{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
    .tag-cloud span{background:#fff;border:1px solid var(--line);padding:8px 13px;border-radius:30px;font-size:13px;color:#3c4b64}
    .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .solution{padding:26px;background:var(--navy);color:#fff;border-radius:var(--radius);min-height:210px}
    .solution:nth-child(2){background:#243958}.solution:nth-child(3){background:#183f4a}
    .solution h3{color:var(--lime);font-size:20px}.solution p{font-size:14px;color:#d5e2eb}
    .case-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
    .case{background:#fff;border:1px solid var(--line);overflow:hidden}
    .case img{width:100%;aspect-ratio:16/9;object-fit:cover}
    .case-body{padding:20px}.case-body h3{margin-bottom:7px}.case-body p{font-size:14px;color:var(--muted);margin-bottom:0}
    .comparison-wrap{display:grid;grid-template-columns:260px 1fr;gap:30px;align-items:start}
    .score{background:var(--navy);color:#fff;padding:28px;text-align:center;position:sticky;top:95px}
    .score .stars{color:var(--lime);font-size:25px;letter-spacing:2px}.score strong{display:block;font-size:48px;line-height:1.2;color:#fff}.score small{color:#b9cad8}
    .table-scroll{overflow-x:auto;background:#fff;border:1px solid var(--line)}
    table{border-collapse:collapse;width:100%;min-width:650px;font-size:14px}
    th,td{text-align:left;padding:16px;border-bottom:1px solid var(--line)}
    th{background:#eef6fa;color:var(--navy)}td:last-child{color:#087d75;font-weight:700}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{background:#fff;border:1px solid var(--line);padding:24px}.price-card h3{font-size:19px}.price-card strong{font-size:28px;color:var(--pink)}.price-card p{font-size:13px;color:var(--muted)}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#fff;border:1px solid var(--line);padding:22px}.review p{font-size:14px;color:#40506a}.review footer{font-size:13px;color:#e13b85;font-weight:700}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:center}.network-box{background:#fff;padding:25px;border-left:4px solid var(--violet)}
    .network-list{display:flex;gap:10px;flex-wrap:wrap}.network-list span{font-size:13px;background:#f0f4f8;padding:8px 11px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 30px}.faq-item{background:#fff;border-bottom:1px solid var(--line)}.faq-item summary{cursor:pointer;padding:18px 4px;font-weight:700;color:var(--navy);list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";float:right;color:var(--pink);font-size:20px}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 4px 18px;color:var(--muted);font-size:14px}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article{background:#fff;padding:22px;border-top:3px solid var(--cyan)}.article span{font-size:12px;color:var(--pink)}.article h3{font-size:18px;margin:10px 0}.article p{font-size:14px;color:var(--muted)}
    .form-section{background:var(--navy);color:#fff}.form-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px}.form-section .section-intro{color:#c2d1e1}.contact-points{margin-top:25px;display:grid;gap:10px;color:#d4e2ed;font-size:14px}.form-box{background:#fff;padding:26px;color:var(--ink)}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);padding:12px;border-radius:6px;font:inherit;color:var(--ink);background:#fbfdff}.field textarea{min-height:110px;resize:vertical}.form-box .button{margin-top:16px;width:100%}
    .join{border:1px solid #b9cad8;padding:30px;display:flex;align-items:center;justify-content:space-between;gap:25px;background:#fff}.join p{color:var(--muted);margin:0}
    .footer{background:#0d152b;color:#d8e3ef;padding:45px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}.footer h3{color:#fff;font-size:16px}.footer p,.footer a{font-size:13px;color:#aebed0}.footer a{display:block;margin:7px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:18px;margin-top:28px;font-size:12px;color:#91a5bb}
    .qr{width:104px;border-radius:6px;margin-top:12px}.floating{position:fixed;right:18px;bottom:18px;z-index:15}.floating a{display:flex;align-items:center;gap:8px;background:var(--pink);color:#fff;padding:12px 16px;border-radius:30px;box-shadow:0 10px 25px rgba(255,79,154,.3);font-size:13px;font-weight:700}
    .reveal{opacity:0;transform:translateY(20px);transition:opacity .65s ease,transform .65s ease}.reveal.visible{opacity:1;transform:none}
    @media(max-width:1000px){.nav-links a{padding:7px 5px;font-size:12px}.service-grid{grid-template-columns:repeat(2,1fr)}.hero-grid{gap:35px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:720px){.container{width:min(100% - 28px,580px)}.nav-wrap{min-height:64px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:70px;background:#fff;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow);align-items:stretch}.nav-links.open{display:flex;flex-direction:column}.nav-links a{padding:11px 12px}.nav-cta{margin:8px 0 0}.hero{padding:65px 0 70px}.hero-grid,.about-grid,.form-grid,.network,.comparison-wrap{grid-template-columns:1fr}.signal-board{padding-left:18px}.stats{grid-template-columns:repeat(2,1fr);margin-top:-20px}.section{padding:62px 0}.section-head{display:block}.service-grid,.solution-grid,.review-grid,.article-grid,.price-grid{grid-template-columns:1fr}.workflow{grid-template-columns:1fr;border-top:0}.step{border-right:0;border-bottom:1px solid #b9cad8;padding:22px 0}.case-grid{grid-template-columns:1fr}.faq-grid{grid-template-columns:1fr}.score{position:static}.field-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.join{display:block}.join .button{margin-top:18px}.footer-grid{grid-template-columns:1fr}.floating a{padding:10px 13px}}