:root{
      --ink:#1d2433;
      --muted:#657083;
      --paper:#fffdf8;
      --panel:#ffffff;
      --line:#e8e3d8;
      --blue:#3157d5;
      --cyan:#20b7bd;
      --coral:#f06461;
      --yellow:#f6c84c;
      --violet:#7655c7;
      --green:#47a86a;
      --shadow:0 16px 40px rgba(38,47,78,.09);
      --container:1180px;
    }
    *{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:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(232,227,216,.9)}
    .nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;min-width:160px}
    .ai-page-logo{width:132px;max-width:100%;height:auto}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#4b5566;padding:9px 10px;transition:.2s}
    .nav-links a:hover{color:var(--blue);background:#eef2ff}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:8px;padding:12px 19px;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}
    .nav-cta{background:var(--blue);color:#fff;margin-left:10px}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(49,87,213,.22)}
    .button-primary{background:var(--blue);color:#fff}
    .button-light{background:#fff;color:var(--blue);border:1px solid #dbe2ff}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:7px;padding:8px 10px;font-size:20px;color:var(--ink)}
    .hero{position:relative;overflow:hidden;padding:92px 0 78px;background:#f4f5ff}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none}
    .hero:before{width:270px;height:90px;right:-55px;top:70px;border:14px solid var(--yellow);border-radius:50%;transform:rotate(-18deg)}
    .hero:after{width:180px;height:24px;left:-30px;bottom:60px;background:var(--coral);transform:rotate(-7deg);border-radius:20px}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);gap:60px;align-items:center;position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;letter-spacing:1px;font-size:14px}
    .eyebrow:before{content:"";width:28px;height:4px;border-radius:8px;background:var(--coral)}
    h1,h2,h3{line-height:1.2;margin:0 0 18px;letter-spacing:0}
    h1{font-size:clamp(38px,5vw,68px);max-width:680px}
    h2{font-size:clamp(28px,3.4vw,44px)}
    h3{font-size:20px}
    .hero p{font-size:18px;color:#536074;max-width:660px;margin:0 0 28px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-board{background:#fff;border:1px solid #e2e4f2;border-radius:18px;padding:24px;box-shadow:var(--shadow);transform:rotate(2deg)}
    .board-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:18px}
    .dots{display:flex;gap:6px}.dots i{width:9px;height:9px;border-radius:50%;display:block}.dots i:nth-child(1){background:var(--coral)}.dots i:nth-child(2){background:var(--yellow)}.dots i:nth-child(3){background:var(--green)}
    .board-label{font-size:13px;color:var(--muted)}
    .model-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;margin:16px 0}
    .model-row strong{font-size:14px}.meter{height:9px;background:#edf0f7;border-radius:8px;overflow:hidden;grid-column:1 / -1}.meter span{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--cyan),var(--blue))}
    .board-note{background:#fff6d8;padding:13px;border-radius:10px;color:#6b5720;font-size:13px;margin-top:18px}
    .section{padding:88px 0}
    .section-tint{background:#f5f8f7}
    .section-blue{background:#eef2ff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}
    .section-head p{max-width:560px;color:var(--muted);margin:0}
    .kicker{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:9px}
    .intro-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:stretch}
    .intro-copy{font-size:18px;color:#4f5b6d}
    .note-panel{padding:28px;background:#fff;border-left:6px solid var(--yellow);box-shadow:var(--shadow);border-radius:4px}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
    .metric{background:#fff;padding:23px;border-top:4px solid var(--blue);box-shadow:0 8px 22px rgba(32,53,91,.06)}
    .metric:nth-child(2){border-color:var(--coral)}.metric:nth-child(3){border-color:var(--cyan)}.metric:nth-child(4){border-color:var(--yellow)}
    .metric strong{display:block;font-size:29px;color:var(--ink)}.metric span{font-size:14px;color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}
    .service-card{background:var(--panel);padding:24px;border:1px solid var(--line);border-radius:12px;transition:.25s;position:relative;overflow:hidden}
    .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#cfd7ff}
    .service-card:after{content:"";position:absolute;width:36px;height:8px;right:18px;top:18px;background:var(--yellow);transform:rotate(-12deg);border-radius:8px}
    .service-card:nth-child(4n+2):after{background:var(--coral)}.service-card:nth-child(4n+3):after{background:var(--cyan)}.service-card:nth-child(4n+4):after{background:var(--violet)}
    .service-card p{color:var(--muted);font-size:14px;margin:0}
    .service-icon{font-size:26px;margin-bottom:14px}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:2px solid var(--blue);padding-top:28px}
    .step{position:relative;padding:0 22px 10px 0}.step:not(:last-child):after{content:"→";position:absolute;right:12px;top:0;color:var(--coral);font-size:26px;font-weight:700}.step-number{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;margin-bottom:14px}.step p{color:var(--muted);font-size:14px}
    .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .solution{background:#fff;padding:27px;border-radius:12px;min-height:190px;border-bottom:5px solid var(--cyan)}
    .solution:nth-child(2){border-color:var(--coral)}.solution:nth-child(3){border-color:var(--yellow)}
    .solution ul,.check-list{padding-left:20px;margin:12px 0 0;color:var(--muted);font-size:14px}
    .network{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .tag{border:1px solid #d8def4;background:#fff;padding:8px 13px;border-radius:20px;font-size:14px;color:#4c5980}
    .tag:nth-child(3n){border-color:#f5c8c4}.tag:nth-child(4n){border-color:#bee4df}
    .comparison-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    table{width:100%;min-width:760px;border-collapse:collapse;text-align:left}
    th,td{padding:17px 18px;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#eaf0ff;color:#253b8c;font-size:14px}td{font-size:14px;color:#596477}td:first-child{font-weight:700;color:var(--ink);width:22%}
    .score{display:flex;align-items:center;gap:18px;background:#fff5d5;padding:22px 25px;margin-bottom:22px;border-left:6px solid var(--yellow)}
    .score strong{font-size:36px;color:var(--blue)}.stars{color:#df9c10;font-size:22px}
    .case-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}
    .case{background:#fff;border:1px solid var(--line);display:grid;grid-template-columns:42% 58%;overflow:hidden;border-radius:12px}
    .case-media{background:#eef2ff;display:flex;align-items:center;justify-content:center;padding:16px}.case-media img{width:100%;aspect-ratio:1/1;object-fit:cover}
    .case-body{padding:24px}.case-body p{font-size:14px;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .review{background:#fff;padding:24px;border-radius:12px;box-shadow:0 8px 25px rgba(39,52,83,.06)}
    .review p{color:#526073;font-size:15px}.review footer{font-size:13px;color:var(--blue);font-weight:700}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .article{background:#fff;padding:19px;border-top:4px solid var(--coral);min-height:145px}.article:nth-child(2n){border-color:var(--cyan)}.article a{font-weight:700;font-size:15px}.article span{display:block;color:var(--muted);font-size:13px;margin-top:12px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px 22px}
    details{background:#fff;border:1px solid var(--line);padding:18px 20px}summary{cursor:pointer;font-weight:700;padding-right:18px;position:relative}details p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .match-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:35px;align-items:start}
    .form-box{background:#fff;padding:28px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1 / -1}.field label{font-size:14px;font-weight:700}.field input,.field select,.field textarea{font:inherit;border:1px solid #d9deea;padding:12px 13px;border-radius:6px;background:#fff;color:var(--ink)}.field textarea{min-height:120px;resize:vertical}
    .contact-band{background:#243b8d;color:#fff;padding:54px 0}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}.contact-band p{color:#dce4ff}.contact-list{display:grid;gap:9px}.contact-list strong{color:#fff}.contact-list span{color:#dce4ff}
    .qr{width:120px;background:#fff;padding:7px;border-radius:6px;margin-top:16px}
    .footer{background:#172653;color:#dce4ff;padding:38px 0 22px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px}.footer h3{font-size:16px;color:#fff}.footer p,.footer a{font-size:13px;color:#bfcbed}.footer-links{display:flex;flex-wrap:wrap;gap:9px 17px}.copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:28px;padding-top:18px;font-size:12px;color:#a9b9e0}
    .floating{position:fixed;right:20px;bottom:20px;z-index:10}.floating a{display:flex;align-items:center;gap:8px;background:var(--coral);color:#fff;padding:12px 16px;border-radius:30px;box-shadow:0 10px 25px rgba(240,100,97,.3);font-weight:700;font-size:14px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}.reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){.nav-links a{padding:8px 6px;font-size:13px}.service-grid{grid-template-columns:repeat(3,1fr)}.article-grid{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:760px){
      .container{width:min(var(--container),calc(100% - 28px))}.nav{min-height:68px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:12px 14px;border-bottom:1px solid var(--line);box-shadow:0 12px 22px rgba(20,30,60,.08)}.nav-links.open{display:flex;flex-direction:column;align-items:stretch}.nav-links a{padding:10px 6px}.nav-cta{margin:6px 0 0;text-align:center}
      .hero{padding:62px 0 56px}.hero-grid,.intro-grid,.match-grid,.contact-grid{grid-template-columns:1fr;gap:30px}.hero-board{transform:none}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:12px}.metric-grid{grid-template-columns:repeat(2,1fr)}.service-grid,.solution-grid{grid-template-columns:1fr 1fr}.workflow{grid-template-columns:1fr;gap:20px;border-top:0;padding-top:0}.step{padding:0 0 18px 54px;border-left:2px solid var(--blue)}.step-number{position:absolute;left:-18px;top:0}.step:not(:last-child):after{content:"↓";right:auto;left:-13px;top:auto;bottom:-15px}.case-grid,.reviews,.faq-grid,.footer-grid{grid-template-columns:1fr}.article-grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.contact-band{padding:48px 0}
    }
    @media(max-width:460px){h1{font-size:38px}.metric-grid,.service-grid,.solution-grid,.article-grid{grid-template-columns:1fr}.floating{right:12px;bottom:12px}.floating a{padding:10px 13px}}