:root{
  --mint-50:#f1fbf6;
  --mint-100:#dff5e9;
  --mint-200:#bde9d2;
  --mint-500:#27a875;
  --mint-600:#16865c;
  --ink:#17352d;
  --muted:#60736d;
  --line:#dbeae3;
  --paper:#ffffff;
  --sand:#fffaf1;
  --coral:#eb806b;
  --shadow:0 18px 45px rgba(22,92,68,.10);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--mint-50);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(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.navbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;flex:0 0 auto}
.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:#3b5a50;padding:7px 9px;border-radius:8px;white-space:nowrap}
.nav-links a:hover{background:var(--mint-100);color:var(--mint-600)}
.header-actions{display:flex;align-items:center;gap:9px;margin-left:8px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;font-size:14px;cursor:pointer;transition:.25s ease}
.button-primary{background:var(--mint-600);color:#fff;box-shadow:0 8px 18px rgba(22,134,92,.18)}
.button-primary:hover{background:#0f704b;transform:translateY(-2px)}
.button-light{background:#fff;color:var(--mint-600);border-color:var(--mint-200)}
.button-light:hover{background:var(--mint-100)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 10px;font-size:21px;color:var(--mint-600)}
.hero{position:relative;overflow:hidden;padding:88px 0 74px;background:linear-gradient(135deg,#f8fffb 0%,#e9f9f0 55%,#f8fcf7 100%)}
.hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(39,168,117,.16);border-radius:50%;pointer-events:none}
.hero:before{width:430px;height:430px;right:-170px;top:-150px}
.hero:after{width:250px;height:250px;left:-125px;bottom:-140px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--mint-600);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:16px}
.eyebrow:before{content:"";width:22px;height:3px;border-radius:3px;background:var(--coral)}
h1,h2,h3{line-height:1.25;margin:0 0 16px;letter-spacing:0}
h1{font-size:clamp(34px,5vw,62px);max-width:650px}
h2{font-size:clamp(26px,3.5vw,40px)}
h3{font-size:20px}
.hero p{max-width:650px;color:var(--muted);font-size:17px;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-panel{background:#fff;border:1px solid var(--line);padding:25px;border-radius:20px;box-shadow:var(--shadow);position:relative}
.hero-panel:after{content:"";position:absolute;width:9px;height:9px;background:var(--coral);border-radius:50%;right:25px;top:25px}
.panel-title{font-weight:800;margin-bottom:20px}
.signal{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.signal:last-child{border-bottom:0}
.signal-icon{width:34px;height:34px;border-radius:10px;background:var(--mint-100);color:var(--mint-600);display:grid;place-items:center;font-weight:800}
.signal strong{display:block;font-size:15px}
.signal span{font-size:13px;color:var(--muted)}
.section{padding:82px 0}
.section-alt{background:#fff}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
.section-heading p{max-width:520px;color:var(--muted);margin:0}
.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
.text-block{padding:30px 0}
.text-block p{color:var(--muted)}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin-top:24px}
.feature-list div{padding:14px 16px;border-left:3px solid var(--mint-500);background:#fff;border-radius:0 10px 10px 0}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.metric{background:#fff;border:1px solid var(--line);padding:22px;border-radius:14px}
.metric strong{font-size:30px;color:var(--mint-600);display:block}
.metric span{color:var(--muted);font-size:13px}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.service-card{background:#fff;border:1px solid var(--line);padding:21px;border-radius:14px;transition:.25s ease}
.service-card:hover,.review:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--mint-200)}
.service-card h3{font-size:17px}
.service-card p{font-size:14px;color:var(--muted);margin:0}
.service-tag{display:inline-block;color:var(--mint-600);background:var(--mint-100);font-size:12px;font-weight:700;padding:3px 8px;border-radius:5px;margin-bottom:13px}
.workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--mint-200)}
.step{position:relative;padding:28px 16px 10px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step-number{width:34px;height:34px;border-radius:50%;background:var(--mint-600);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:17px}
.step p{font-size:14px;color:var(--muted)}
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.solution{padding:24px;background:var(--sand);border:1px solid #f2e7d1;border-radius:14px}
.solution p{margin:0;color:var(--muted);font-size:14px}
.network{display:flex;flex-wrap:wrap;gap:10px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:15px}
.network span{padding:8px 13px;border-radius:7px;background:var(--mint-50);border:1px solid var(--mint-200);font-size:14px;color:#356b57}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.timeline-item{padding:22px;border-top:4px solid var(--mint-500);background:#fff;border-radius:0 0 13px 13px;border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline-item small{color:var(--mint-600);font-weight:800}
.timeline-item p{color:var(--muted);font-size:14px;margin-bottom:0}
.media-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}
.media-frame{overflow:hidden;border-radius:14px;background:#fff;border:1px solid var(--line)}
.media-frame img{width:100%;aspect-ratio:16/8;object-fit:cover}
.media-caption{padding:15px 17px;font-weight:700}
.media-small img{aspect-ratio:1/1;object-fit:cover}
.compare-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:14px}
.compare{width:100%;min-width:760px;border-collapse:collapse;text-align:left}
.compare th,.compare td{padding:16px;border-bottom:1px solid var(--line);font-size:14px}
.compare th{background:#e9f8ef;color:var(--ink)}
.compare th:not(:first-child),.compare td:not(:first-child){text-align:center}
.compare .highlight{color:var(--mint-600);font-weight:800;background:#f4fcf7}
.score{display:flex;align-items:center;gap:20px;margin-bottom:22px}
.score strong{font-size:48px;color:var(--mint-600);line-height:1}
.stars{color:#e49d34;letter-spacing:3px;font-size:22px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{background:#fff;padding:22px;border:1px solid var(--line);border-radius:14px;transition:.25s ease}
.review p{font-size:14px;color:var(--muted);min-height:86px}
.reviewer{display:flex;align-items:center;gap:11px;font-weight:700}
.avatar{width:35px;height:35px;border-radius:50%;background:var(--mint-200);display:grid;place-items:center;color:var(--mint-600)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.case{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s ease}
.case img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-content{padding:17px}
.case-content p{font-size:14px;color:var(--muted);margin:0}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.article{display:flex;justify-content:space-between;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);padding:17px;border-radius:10px}
.article span{font-size:14px;font-weight:700}
.article small{color:var(--muted);white-space:nowrap}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{font-size:14px;padding:8px 12px;background:#fff;border:1px solid var(--mint-200);border-radius:7px;color:#3f6959}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:17px 19px}
summary{cursor:pointer;font-weight:700;padding-right:15px}
details p{color:var(--muted);font-size:14px;margin:12px 0 0}
.form-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px;align-items:start}
.contact-card{background:var(--mint-600);color:#fff;padding:30px;border-radius:16px}
.contact-card p{color:#d8f5e6}
.contact-details{display:grid;gap:12px;margin-top:24px}
.contact-details div{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.25)}
.form-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
label{font-size:13px;font-weight:700}
input,select,textarea{width:100%;border:1px solid #cfe1d9;border-radius:8px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfefc}
input:focus,select:focus,textarea:focus{outline:3px solid var(--mint-100);border-color:var(--mint-500)}
textarea{min-height:120px;resize:vertical}
.qr{width:118px;border-radius:8px;margin-top:10px}
.footer{background:#17352d;color:#e8f8ef;padding:50px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:35px;padding-bottom:30px}
.footer h3{font-size:16px;color:#fff}
.footer p,.footer a{color:#b9d6c7;font-size:14px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#a8c6b8;font-size:13px}
.float-contact{position:fixed;right:20px;bottom:25px;z-index:10;background:var(--coral);color:#fff;padding:12px 16px;border-radius:9px;box-shadow:0 12px 24px rgba(152,75,58,.22);font-size:14px;font-weight:800}
.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:5px;padding-right:5px;font-size:12px}
  .header-actions{display:none}
  .service-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:760px){
  .container{width:min(100% - 28px,600px)}
  .navbar{min-height:66px}
  .menu-toggle{display:block}
  .nav-links{display:none;position:absolute;left:14px;right:14px;top:72px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;box-shadow:var(--shadow);align-items:stretch}
  .nav-links.open{display:flex;flex-direction:column}
  .nav-links a{padding:10px 12px}
  .hero{padding:62px 0 54px}
  .hero-grid,.intro-grid,.form-layout,.media-grid{grid-template-columns:1fr;gap:25px}
  .section{padding:60px 0}
  .section-heading{display:block}
  .section-heading p{margin-top:12px}
  .metrics,.service-grid,.solution-grid,.timeline,.review-grid,.case-grid{grid-template-columns:1fr 1fr}
  .workflow{grid-template-columns:1fr 1fr;border-top:0}
  .step{border-top:1px solid var(--mint-200);border-right:1px solid var(--line)}
  .faq-list,.article-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:18px}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin-top:8px}
}
@media(max-width:470px){
  .metrics,.service-grid,.solution-grid,.timeline,.review-grid,.case-grid,.feature-list,.form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  h1{font-size:35px}
  .hero-actions .button{width:100%}
  .workflow{grid-template-columns:1fr}
  .step{border-right:0}
}