:root{
  --ink:#172333;
  --muted:#607083;
  --blue:#1368e8;
  --cyan:#0ea6c7;
  --lime:#b8e94e;
  --yellow:#ffd84d;
  --paper:#f6f9fc;
  --line:#dce6ef;
  --card:#ffffff;
  --deep:#10283e;
  --orange:#ff8a3d;
  --shadow:0 16px 42px rgba(24,62,94,.10);
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
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 rgba(220,230,239,.9);backdrop-filter:blur(14px)}
.navbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.ai-page-logo{width:42px;max-height:42px;object-fit:contain}
.brand-name{font-size:19px;font-weight:800;letter-spacing:0;color:var(--deep)}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
.nav-links a{padding:8px 10px;font-size:13px;color:#455a70;transition:.25s}
.nav-links a:hover{color:var(--blue)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:8px;cursor:pointer;font-weight:700;transition:transform .25s,box-shadow .25s,background .25s}
.nav-cta{margin-left:12px;padding:11px 17px;color:#fff;background:var(--blue)}
.nav-cta:hover,.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(19,104,232,.22)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:7px;padding:9px 11px;cursor:pointer}
.hero{position:relative;overflow:hidden;background:#e8f7fa;border-bottom:1px solid #d5edf0}
.hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(14,166,199,.25);transform:rotate(24deg)}
.hero:before{width:260px;height:260px;right:-80px;top:-120px;border-radius:50%}
.hero:after{width:180px;height:180px;left:-90px;bottom:-110px;border-radius:28px}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:55px;align-items:center;padding:88px 0 70px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#087c9b;font-size:13px;font-weight:800;letter-spacing:1px}
.eyebrow:before{content:"";width:28px;height:3px;background:var(--lime);border-radius:3px}
h1,h2,h3,p{margin-top:0}
h1{max-width:700px;margin-bottom:22px;font-size:clamp(38px,5vw,68px);line-height:1.1;letter-spacing:0;font-weight:900;color:var(--deep)}
.hero-copy{max-width:650px;color:#526577;font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{padding:13px 20px}
.btn-primary{background:var(--blue);color:#fff}
.btn-secondary{background:#fff;color:var(--deep);border:1px solid #cbdce8}
.btn-light{background:var(--lime);color:#1b3215}
.btn:hover{transform:translateY(-2px)}
.hero-panel{padding:26px;background:#fff;border:1px solid #d2e8ec;border-radius:20px;box-shadow:var(--shadow)}
.panel-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.panel-top strong{font-size:17px}
.status{display:inline-flex;align-items:center;gap:6px;color:#3e7d4d;font-size:12px;font-weight:700}
.status:before{content:"";width:7px;height:7px;background:#55c66b;border-radius:50%}
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}
.matrix-item{padding:15px;background:#f5f9fc;border-radius:10px;border-left:4px solid var(--cyan)}
.matrix-item:nth-child(2){border-left-color:var(--yellow)}
.matrix-item:nth-child(3){border-left-color:var(--orange)}
.matrix-item:nth-child(4){border-left-color:var(--lime)}
.matrix-item b{display:block;font-size:21px;color:var(--deep)}
.matrix-item span{display:block;color:var(--muted);font-size:12px}
.section{padding:88px 0}
.section-alt{background:#edf5f8}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}
.section-head h2{margin-bottom:8px;font-size:clamp(28px,3vw,43px);line-height:1.2;color:var(--deep)}
.section-head p{max-width:620px;margin:0;color:var(--muted)}
.kicker{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:1.5px;text-transform:uppercase}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.intro-text p{color:var(--muted);font-size:16px}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.feature{padding:18px;background:#fff;border-top:3px solid var(--cyan);box-shadow:0 7px 22px rgba(24,62,94,.06)}
.feature:nth-child(2){border-color:var(--yellow)}
.feature:nth-child(3){border-color:var(--orange)}
.feature:nth-child(4){border-color:var(--lime)}
.feature strong{display:block;margin-bottom:5px}
.feature span{color:var(--muted);font-size:14px}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.service-card{background:var(--card);border:1px solid var(--line);padding:22px;border-radius:var(--radius);transition:.25s}
.service-card:hover,.quote:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.service-icon{width:38px;height:38px;display:grid;place-items:center;margin-bottom:17px;background:#e3f7fa;color:#087c9b;font-weight:900;border-radius:9px}
.service-card:nth-child(2) .service-icon{background:#fff4c7;color:#9a7100}
.service-card:nth-child(3) .service-icon{background:#ffe8dc;color:#c85b20}
.service-card:nth-child(4) .service-icon{background:#edf7d2;color:#5a8210}
.service-card h3{margin-bottom:7px;font-size:18px}
.service-card p{margin:0;color:var(--muted);font-size:14px}
.workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid #b9d1de;border-bottom:1px solid #b9d1de}
.step{position:relative;padding:25px 20px 27px;border-right:1px solid #b9d1de}
.step:last-child{border-right:0}
.step-number{color:var(--blue);font-size:13px;font-weight:900}
.step h3{margin:8px 0 5px;font-size:17px}
.step p{margin:0;color:var(--muted);font-size:13px}
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.solution{padding:23px;background:#fff;border-radius:12px;border:1px solid var(--line)}
.solution h3{font-size:18px;margin-bottom:8px}
.solution p{margin:0;color:var(--muted);font-size:14px}
.network-wrap{display:grid;grid-template-columns:1fr .8fr;gap:30px;align-items:stretch}
.network-main{padding:30px;background:var(--deep);color:#fff;border-radius:16px}
.network-main h2{color:#fff;margin-bottom:12px}
.network-main p{color:#c6d9e6}
.tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.tag{padding:7px 12px;border:1px solid rgba(255,255,255,.25);border-radius:6px;color:#e8f4fb;font-size:13px}
.network-side{background:#fff;border:1px solid var(--line);border-radius:16px;padding:27px}
.network-side h3{margin-bottom:15px}
.timeline{display:grid;gap:14px}
.timeline-item{display:grid;grid-template-columns:88px 1fr;gap:12px;align-items:start}
.timeline-item strong{color:var(--blue);font-size:14px}
.timeline-item span{color:var(--muted);font-size:14px}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:12px}
.compare{width:100%;min-width:740px;border-collapse:collapse}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
.compare th{background:#eaf5f8;color:var(--deep);font-weight:800}
.compare tr:last-child td{border-bottom:0}
.compare td:first-child{font-weight:700;color:var(--deep)}
.highlight{color:#087c9b;font-weight:800}
.rating-band{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:20px;padding:21px 24px;background:#fff4c7;border-left:5px solid var(--yellow);border-radius:10px}
.rating-band strong{font-size:23px;color:#8b6800}
.stars{color:#e6a600;letter-spacing:3px;font-size:22px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:13px;transition:.25s}
.case-media{aspect-ratio:16/9;background:#eef4f7;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-content{padding:20px}
.case-content h3{margin-bottom:6px;font-size:18px}
.case-content p{margin:0;color:var(--muted);font-size:14px}
.reference-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.reference-box{padding:24px;background:#fff;border:1px solid var(--line);border-radius:12px}
.reference-box h3{margin-bottom:10px}
.price-line{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.price-line:last-child{border-bottom:0}
.price-line span{color:var(--muted)}
.price-line b{color:var(--blue)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.quote{padding:22px;background:#fff;border:1px solid var(--line);border-radius:12px;transition:.25s}
.quote p{color:#465b6e;font-size:14px;margin-bottom:17px}
.quote footer{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}
.quote footer strong{color:var(--deep);font-size:14px}
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:46px;align-items:start}
.faq-intro{padding:28px;background:#dff4f5;border-left:5px solid var(--cyan)}
.faq-intro h2{font-size:30px}
.faq-intro p{color:#4c6873;margin-bottom:20px}
.faq-list{display:grid;gap:10px}
details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:0 18px}
summary{cursor:pointer;list-style:none;padding:17px 0;font-weight:700;color:var(--deep)}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";float:right;color:var(--blue);font-size:20px}
details[open] summary:after{content:"−"}
details p{margin:0;padding:0 0 17px;color:var(--muted);font-size:14px}
.article-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}
.article-feature{padding:30px;background:var(--deep);color:#fff;border-radius:15px}
.article-feature h2{color:#fff}
.article-feature p{color:#d0e0ec}
.article-list{display:grid;gap:0}
.article-item{display:flex;align-items:start;justify-content:space-between;gap:16px;padding:17px 0;border-bottom:1px solid var(--line)}
.article-item:first-child{padding-top:0}
.article-item h3{font-size:16px;margin:0 0 4px}
.article-item span{color:var(--muted);font-size:12px}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
.contact-info{padding:29px;background:#e6f5f7;border-radius:15px}
.contact-info h2{font-size:32px}
.contact-info p{color:#4c6873}
.contact-list{display:grid;gap:10px;margin-top:20px}
.contact-list div{padding:12px 14px;background:rgba(255,255,255,.7);border-radius:7px;font-size:14px}
.contact-form{padding:28px;background:#fff;border:1px solid var(--line);border-radius:15px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field{display:grid;gap:7px}
.form-field.full{grid-column:1 / -1}
.form-field label{font-size:13px;font-weight:700;color:var(--deep)}
.form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid #cddbe5;border-radius:7px;padding:12px 13px;color:var(--ink);background:#fbfdfe;outline:0}
.form-field textarea{min-height:120px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(19,104,232,.1)}
.submit-row{margin-top:18px;display:flex;align-items:center;gap:15px;flex-wrap:wrap}
.form-note{color:var(--muted);font-size:12px}
.join{background:#dff3d0}
.join-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
.join h2{margin-bottom:8px;color:#204519}
.join p{margin:0;color:#496543}
.site-footer{background:#10283e;color:#d4e3ed;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:13px}
.site-footer p,.site-footer a{font-size:13px;color:#adc5d3}
.site-footer a:hover{color:#fff}
.footer-links{display:grid;gap:7px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:35px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);font-size:12px;color:#91adbd}
.qr{width:105px;margin-top:12px;border-radius:5px}
.float-tools{position:fixed;right:20px;bottom:22px;z-index:15;display:grid;gap:9px}
.float-tools a{display:grid;place-items:center;width:46px;height:46px;background:#fff;color:var(--blue);border:1px solid var(--line);border-radius:50%;box-shadow:0 7px 20px rgba(16,40,62,.15);font-size:12px;font-weight:800}
.float-tools a:hover{background:var(--blue);color:#fff}
.reveal{opacity:0;transform:translateY(16px);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:12px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .workflow{grid-template-columns:repeat(3,1fr)}
  .step:nth-child(3){border-right:0}
  .step:nth-child(4),.step:nth-child(5){border-top:1px solid #b9d1de}
}
@media(max-width:800px){
  .container{width:min(100% - 28px,680px)}
  .navbar{min-height:68px}
  .menu-toggle{display:block}
  .nav-links{display:none;position:absolute;left:14px;right:14px;top:68px;padding:10px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:10px;align-items:stretch}
  .nav-links.open{display:grid}
  .nav-links a{padding:11px 12px;border-bottom:1px solid #edf1f4}
  .nav-links a:last-of-type{border-bottom:0}
  .nav-cta{margin:8px 0 0}
  .hero-inner,.intro-grid,.network-wrap,.faq-layout,.article-layout,.contact-grid{grid-template-columns:1fr;gap:28px}
  .hero-inner{padding:62px 0 52px}
  .hero-panel{max-width:560px}
  .section{padding:64px 0}
  .section-head{display:block}
  .section-head p{margin-top:10px}
  .solution-grid{grid-template-columns:1fr 1fr}
  .case-grid,.quote-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .join-inner{display:block}
  .join .btn{margin-top:18px}
}
@media(max-width:560px){
  h1{font-size:40px}
  .hero-copy{font-size:16px}
  .feature-list,.solution-grid,.case-grid,.quote-grid,.service-grid,.reference-grid{grid-template-columns:1fr}
  .workflow{display:block}
  .step{border-right:0;border-bottom:1px solid #b9d1de}
  .step:last-child{border-bottom:0}
  .step:nth-child(4),.step:nth-child(5){border-top:0}
  .form-grid{grid-template-columns:1fr}
  .form-field.full{grid-column:auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin-top:8px}
  .rating-band{display:block}
  .stars{margin-top:8px}
}
@media(prefers-reduced-motion:reduce){
  *,html{scroll-behavior:auto!important;transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}