:root{
      --ink:#10243e;
      --muted:#60718a;
      --line:#dce8f3;
      --blue:#1769ff;
      --cyan:#08b9c9;
      --orange:#ff8a3d;
      --paper:#ffffff;
      --soft:#f4f9fd;
      --pale:#eaf6ff;
      --shadow:0 18px 50px rgba(22,70,120,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:
        radial-gradient(circle at 8% 12%,rgba(20,185,201,.08),transparent 24rem),
        radial-gradient(circle at 90% 36%,rgba(23,105,255,.07),transparent 25rem),
        #f7fbff;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans 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(247,251,255,.92);
      border-bottom:1px solid rgba(220,232,243,.9);
      backdrop-filter:blur(16px);
    }
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
    .ai-page-logo{width:42px;max-width:100%;height:auto}
    .brand strong{font-size:19px;letter-spacing:0;color:var(--ink)}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{padding:8px 10px;color:#435670;font-size:13px;transition:.2s}
    .nav-links a:hover{color:var(--blue)}
    .nav-cta,.primary-btn,.outline-btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:8px;padding:11px 18px;font-weight:700;transition:.25s;
      cursor:pointer;border:1px solid transparent;
    }
    .nav-cta,.primary-btn{color:#fff;background:linear-gradient(110deg,var(--blue),#13b7cd);box-shadow:0 10px 24px rgba(23,105,255,.22)}
    .nav-cta:hover,.primary-btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(23,105,255,.3)}
    .outline-btn{color:var(--blue);border-color:#9cc7f2;background:#fff}
    .outline-btn:hover{border-color:var(--blue);transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:26px;color:var(--ink);cursor:pointer}
    .hero{position:relative;overflow:hidden;padding:92px 0 68px;background:linear-gradient(135deg,#f2fbff 0%,#fff 48%,#fff7ed 100%)}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(23,105,255,.13);transform:rotate(25deg)}
    .hero:before{width:320px;height:320px;right:-120px;top:-90px;border-radius:44px}
    .hero:after{width:180px;height:180px;left:-90px;bottom:-80px;border-radius:32px;border-color:rgba(255,138,61,.2)}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);gap:52px;align-items:center;position:relative;z-index:1}
    .eyebrow,.section-kicker{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:1.5px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,66px);line-height:1.13;letter-spacing:0;margin:16px 0 20px;max-width:690px}
    .hero-copy{font-size:18px;color:#53677f;max-width:650px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 34px}
    .hero-note{display:flex;gap:20px;flex-wrap:wrap;color:#526981;font-size:13px}
    .hero-note span:before{content:"✓";color:#00a9a8;font-weight:800;margin-right:6px}
    .hero-panel{border:1px solid #cfe5f4;background:rgba(255,255,255,.76);border-radius:24px;padding:26px;box-shadow:var(--shadow);animation:rise .7s ease both}
    .panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
    .panel-head strong{font-size:18px}
    .live-dot{width:9px;height:9px;background:#10c7a2;border-radius:50%;box-shadow:0 0 0 6px rgba(16,199,162,.12)}
    .signal-list{display:grid;gap:12px}
    .signal{display:flex;align-items:center;gap:12px;padding:13px;border:1px solid #e4eef7;background:#fff;border-radius:12px}
    .signal-icon{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--blue),var(--cyan))}
    .signal b{display:block;font-size:14px}.signal small{color:var(--muted)}
    .section{padding:82px 0}
    .section.alt{background:rgba(235,246,255,.58);border-block:1px solid #e2eef7}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:32px}
    .section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.2;margin:9px 0 0}
    .section-head p{max-width:560px;color:var(--muted);margin-bottom:0}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-6px}
    .metric{padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 26px rgba(33,83,126,.06)}
    .metric strong{font-size:32px;color:var(--blue);display:block;line-height:1.2}.metric span{color:var(--muted);font-size:13px}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
    .lead{font-size:20px;color:#294563}.copy{color:var(--muted)}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:24px 0 0;padding:0;list-style:none}
    .check-list li{padding:12px 14px;background:#fff;border-left:3px solid var(--cyan);border-radius:8px;box-shadow:0 8px 22px rgba(30,75,115,.05);font-size:14px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.25s}
    .service-card:hover,.review:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .service-card .number{color:var(--orange);font-weight:800;font-size:13px}
    .service-card h3{font-size:18px;margin:10px 0 8px}.service-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .tag-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
    .tag{padding:7px 11px;border-radius:20px;background:#eaf5ff;color:#2160a9;border:1px solid #cde4f7;font-size:13px}
    .process{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:step}
    .process-item{position:relative;padding:22px 18px;border-top:3px solid #bce8ef;background:#fff}
    .process-item:not(:last-child):after{content:"→";position:absolute;right:-12px;top:20px;color:var(--blue);font-size:22px;z-index:2}
    .process-item b{display:block;color:var(--blue);font-size:13px;margin-bottom:12px}.process-item h3{font-size:17px;margin-bottom:6px}.process-item p{font-size:13px;color:var(--muted);margin:0}
    .solution-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .solution-main{padding:28px;background:linear-gradient(135deg,#0d5dbe,#08aebc);color:#fff;border-radius:18px;box-shadow:var(--shadow)}
    .solution-main h3{font-size:28px;margin-bottom:12px}.solution-main p{color:#e1f8ff}.solution-main .tag{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.28);color:#fff}
    .solution-side{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .mini-block{padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px}.mini-block h3{font-size:17px;margin-bottom:8px}.mini-block p{font-size:13px;color:var(--muted);margin:0}
    .case-grid,.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case,.review{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
    .media-box{aspect-ratio:16/8;background:#eaf5fb;overflow:hidden}.media-box img{width:100%;height:100%;object-fit:cover}
    .case-body,.review-body{padding:20px}.case h3{margin-bottom:7px}.case p,.review p{font-size:14px;color:var(--muted);margin-bottom:0}
    .review-body{position:relative}.quote{color:var(--orange);font-size:30px;line-height:1;position:absolute;right:20px;top:15px}.review h3{font-size:16px;margin-bottom:9px}.review small{color:var(--blue);font-weight:700}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 32px rgba(35,82,124,.06)}
    table{width:100%;min-width:760px;border-collapse:collapse;text-align:left}th,td{padding:16px 18px;border-bottom:1px solid #e6eef5;font-size:14px}th{background:#eef8ff;color:#234c76}tr:last-child td{border-bottom:0}td:first-child{font-weight:700;color:#234563}.accent{color:#007e9c;font-weight:700}
    .score-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:22px;padding:22px 26px;background:#fff;border:1px solid #bfe5ee;border-radius:14px}.score{font-size:38px;font-weight:800;color:var(--blue)}.stars{color:#ff9b36;font-size:22px;letter-spacing:3px}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:24px}.network-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:14px}.network-card h3{margin-bottom:12px}.network-card p{color:var(--muted);margin-bottom:0}.network-card .tag-list{margin-top:15px}
    .pricing{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:stretch}.price-highlight{padding:28px;background:#102c4b;color:#fff;border-radius:16px}.price-highlight h3{font-size:26px}.price-highlight p{color:#c8d9e8}.price-line{display:flex;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.2);padding:13px 0;font-size:14px}.price-line:last-child{border-bottom:0}.price-table{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}.faq-item summary{padding:16px 18px;cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:42px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:18px;color:var(--blue);font-size:21px;top:12px}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 18px 17px;color:var(--muted);font-size:14px}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.article{padding:17px;background:#fff;border:1px solid var(--line);border-radius:10px;min-height:130px}.article b{display:block;font-size:14px;margin-bottom:8px}.article span{color:var(--blue);font-size:12px}
    .contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}.contact-panel{padding:28px;background:linear-gradient(135deg,#e9f8ff,#fff7ee);border:1px solid #cfe6f3;border-radius:16px}.contact-panel h3{font-size:26px}.contact-list{display:grid;gap:13px;color:#47617a}.contact-list b{color:var(--ink);margin-right:8px}.qr{width:130px;margin-top:20px;border-radius:10px;border:5px solid #fff;box-shadow:0 6px 20px rgba(20,60,90,.12)}
    form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;display:grid;gap:15px;box-shadow:var(--shadow)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:grid;gap:7px;color:#36506a;font-size:13px;font-weight:700}input,select,textarea{width:100%;border:1px solid #cddde9;border-radius:8px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfdff}textarea{min-height:125px;resize:vertical}.form-message{font-size:13px;color:#079889;display:none}
    .footer{background:#102c4b;color:#dbeaf5;padding:45px 0 24px}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1fr;gap:30px}.footer h3{color:#fff;font-size:16px}.footer p,.footer a{color:#b9cfdf;font-size:13px}.footer a:hover{color:#fff}.footer-links{display:grid;gap:7px}.copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:18px;font-size:12px;color:#9bb5c9}
    .floating{position:fixed;right:22px;bottom:22px;z-index:15;display:flex;flex-direction:column;gap:9px}.float-btn{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--blue);box-shadow:0 8px 22px rgba(23,105,255,.3);font-size:18px;cursor:pointer;border:0}.float-btn:hover{transform:translateY(-3px)}
    .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}.reveal.visible{opacity:1;transform:none}
    @keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
    @media(max-width:1050px){.nav-links a{padding-inline:6px}.service-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:800px){.container{width:min(100% - 28px,680px)}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);align-items:stretch}.nav-links.open{display:grid}.nav-links a{padding:10px 12px}.nav-cta{display:none}.hero{padding:66px 0 54px}.hero-grid,.about-grid,.solution-grid,.network,.pricing,.contact-grid{grid-template-columns:1fr}.hero-panel{max-width:560px}.metrics{grid-template-columns:repeat(2,1fr)}.process{grid-template-columns:1fr;gap:10px}.process-item:not(:last-child):after{content:"↓";right:18px;top:auto;bottom:-22px}.faq-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){h1{font-size:39px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:15px}.hero-actions .primary-btn,.hero-actions .outline-btn{width:100%}.metrics,.service-grid,.case-grid,.review-grid,.solution-side,.form-row,.footer-grid{grid-template-columns:1fr}.article-grid{grid-template-columns:1fr 1fr}.score-panel{display:block}.score{margin-top:10px}.floating{right:14px;bottom:14px}}