:root{
  --ink:#173b36;
  --muted:#60756f;
  --mint:#eaf8f0;
  --mint-deep:#c9ead7;
  --green:#16845f;
  --green-dark:#096044;
  --lime:#b8e46b;
  --paper:#fffdf8;
  --line:#d7e8df;
  --gold:#d99538;
  --shadow:0 18px 45px rgba(32,91,68,.11);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",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% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.94);border-bottom:1px solid rgba(215,232,223,.9);backdrop-filter:blur(14px)}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;min-width:150px}
.ai-page-logo{width:42px}
.brand-name{font-size:18px;font-weight:800;letter-spacing:0;color:var(--green-dark)}
.nav-links{display:flex;align-items:center;gap:0;justify-content:flex-end;flex-wrap:wrap}
.nav-links a{font-size:13px;color:#47655d;padding:8px 9px;border-radius:8px;transition:.2s}
.nav-links a:hover{background:var(--mint);color:var(--green-dark)}
.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:9px;padding:12px 18px;font-weight:750;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}
.nav-cta,.button.primary{background:var(--green);color:#fff;box-shadow:0 8px 18px rgba(22,132,95,.2)}
.nav-cta:hover,.button.primary:hover{background:var(--green-dark);transform:translateY(-2px)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;padding:8px 10px;font-size:20px}
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#eaf8f0 0%,#f7f8e9 58%,#dff4e9 100%);padding:92px 0 76px}
.hero:after{content:"";position:absolute;right:-130px;top:40px;width:360px;height:360px;border:1px solid rgba(22,132,95,.16);border-radius:50%;box-shadow:0 0 0 34px rgba(22,132,95,.04),0 0 0 70px rgba(22,132,95,.035)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:64px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green-dark);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:15px}
.eyebrow:before{content:"";width:24px;height:3px;background:var(--lime);border-radius:4px}
h1,h2,h3{line-height:1.25;margin:0 0 16px;letter-spacing:0}
h1{font-size:clamp(36px,5vw,66px);max-width:680px}
h2{font-size:clamp(28px,4vw,42px)}
h3{font-size:20px}
.hero-copy{font-size:18px;color:#4c6860;max-width:650px;margin:0 0 28px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.button.secondary{border:1px solid var(--green);color:var(--green-dark);background:rgba(255,255,255,.6)}
.button.secondary:hover{background:#fff;transform:translateY(-2px)}
.hero-panel{border-left:4px solid var(--green);padding:12px 0 12px 28px}
.hero-panel strong{display:block;font-size:28px;color:var(--green-dark);margin-bottom:5px}
.hero-panel p{color:var(--muted);margin:0 0 22px}
.mini-flow{display:grid;gap:10px}
.mini-flow div{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.72);border:1px solid rgba(215,232,223,.9);padding:12px 14px;border-radius:10px;font-size:14px}
.mini-flow b{color:var(--green);font-size:13px}
.section{padding:82px 0}
.section.tint{background:var(--mint)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
.section-head p{max-width:570px;color:var(--muted);margin:0}
.kicker{font-size:13px;color:var(--green);font-weight:800;letter-spacing:1px;text-transform:uppercase;margin-bottom:8px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:38px}
.metric{padding:24px;background:#fff;border:1px solid var(--line);border-radius:12px}
.metric strong{display:block;font-size:30px;color:var(--green-dark);margin-bottom:4px}
.metric span{font-size:14px;color:var(--muted)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}
.intro-grid p{color:var(--muted)}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0 0;padding:0;list-style:none}
.check-list li{padding:14px 15px;background:#fff;border:1px solid var(--line);border-radius:10px;color:#3d5a52}
.check-list li:before{content:"✓";color:var(--green);font-weight:900;margin-right:8px}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.service-card{background:#fff;border:1px solid var(--line);padding:24px;border-radius:var(--radius);transition:.25s}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#9fd2b7}
.service-card .icon{width:42px;height:42px;display:grid;place-items:center;background:var(--mint);color:var(--green-dark);border-radius:10px;font-weight:900;margin-bottom:18px}
.service-card p{color:var(--muted);font-size:14px;margin:0}
.tag-list{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.tag{border:1px solid #add8bd;color:var(--green-dark);background:#f5fcf7;border-radius:999px;padding:6px 11px;font-size:13px}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);margin-top:25px}
.step{position:relative;padding:28px 22px 10px 0;margin-right:22px}
.step:not(:last-child):after{content:"→";position:absolute;right:-3px;top:28px;color:var(--green);font-size:22px}
.step-number{font-size:13px;color:var(--green);font-weight:900;margin-bottom:12px}
.step p{color:var(--muted);font-size:14px;margin:0}
.solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.solution{padding:20px;background:#fff;border-radius:12px;border:1px solid var(--line)}
.solution h3{font-size:17px;margin-bottom:8px}
.solution p{font-size:13px;color:var(--muted);margin:0}
.network{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:start}
.network-box{background:var(--ink);color:#effaf2;padding:30px;border-radius:16px}
.network-box p{color:#c4ddd0}
.network-box .tag{background:rgba(255,255,255,.08);color:#d9f4e1;border-color:rgba(255,255,255,.22)}
.media-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:stretch}
.media-card{overflow:hidden;border-radius:16px;background:#fff;border:1px solid var(--line)}
.media-card .media-image{aspect-ratio:16/7;overflow:hidden}
.media-card .media-image.square{aspect-ratio:1/1}
.media-card img{width:100%;height:100%;object-fit:cover}
.media-content{padding:20px}
.media-content p{color:var(--muted);font-size:14px;margin:0}
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff}
.compare{border-collapse:collapse;width:100%;min-width:760px}
.compare th,.compare td{text-align:left;padding:16px;border-bottom:1px solid var(--line);font-size:14px}
.compare th{background:#eff9f2;color:var(--green-dark)}
.compare tr:last-child td{border-bottom:0}
.rating{display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:center;margin-bottom:25px}
.score{font-size:50px;font-weight:900;color:var(--green-dark);line-height:1}
.stars{color:var(--gold);font-size:22px;letter-spacing:2px}
.rating small{color:var(--muted)}
.comments{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.comment{background:#fff;border:1px solid var(--line);padding:22px;border-radius:13px}
.comment p{margin:0 0 18px;color:#4d665e;font-size:14px}
.comment footer{font-size:13px;font-weight:800;color:var(--green-dark)}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.timeline article{padding:22px;background:#fff;border-left:4px solid var(--lime);border-radius:0 12px 12px 0;border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline article p{margin:0;color:var(--muted);font-size:14px}
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.price-panel{padding:26px;border:1px solid var(--line);background:#fff;border-radius:14px}
.price-panel strong{font-size:27px;color:var(--green-dark)}
.price-panel p{color:var(--muted);margin:7px 0 0}
.faq{display:grid;gap:10px;max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 18px}
.faq summary{cursor:pointer;list-style:none;padding:17px 28px 17px 0;font-weight:750;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:0;color:var(--green);font-size:22px}
.faq details[open] summary:after{content:"−"}
.faq details p{margin:0 0 17px;color:var(--muted);font-size:14px}
.article-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.article-list a{padding:18px;background:#fff;border:1px solid var(--line);border-radius:11px;font-size:14px;color:var(--green-dark);transition:.2s}
.article-list a:hover{border-color:var(--green);transform:translateY(-3px)}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;align-items:start}
.contact-info{background:var(--ink);color:#fff;padding:30px;border-radius:16px}
.contact-info p{color:#c7ddd1}
.contact-info dl{display:grid;grid-template-columns:90px 1fr;gap:9px;font-size:14px}
.contact-info dt{color:#9ed1b3}
.contact-info dd{margin:0}
.form-box{background:#fff;border:1px solid var(--line);padding:28px;border-radius:16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:grid;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:750;color:#426158}
.field input,.field select,.field textarea{width:100%;border:1px solid #cfe1d7;border-radius:8px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfefa}
.field textarea{min-height:125px;resize:vertical}
.form-note{font-size:12px;color:var(--muted);margin:13px 0 0}
.join{background:linear-gradient(120deg,#dff3e7,#f7f8e8);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.join-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}
.join-inner p{color:var(--muted);margin:0}
.site-footer{background:#143b35;color:#e6f4ea;padding:45px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:35px}
.site-footer p,.site-footer li{color:#b9d5c8;font-size:14px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px}
.site-footer h3{font-size:16px;color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid rgba(255,255,255,.16);margin-top:30px;padding-top:16px;font-size:12px;color:#a8c7b8}
.qr{width:105px;margin-top:12px;border-radius:7px}
.float-contact{position:fixed;right:20px;bottom:20px;z-index:15;background:var(--green);color:#fff;border-radius:50px;padding:12px 17px;box-shadow:0 10px 25px rgba(22,132,95,.3);font-size:13px;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:1000px){
  .nav-links{display:none;position:absolute;left:18px;right:18px;top:70px;padding:10px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:10px;flex-direction:column;align-items:stretch}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 13px}
  .menu-toggle{display:block}
  .header-inner{min-height:70px}
  .hero-grid,.network,.contact-grid{grid-template-columns:1fr}
  .hero{padding-top:65px}
  .hero-panel{max-width:600px}
  .solution-grid{grid-template-columns:repeat(3,1fr)}
  .article-list{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:680px){
  .container{width:min(100% - 28px,1180px)}
  .section{padding:58px 0}
  .hero{padding:58px 0 54px}
  h1{font-size:39px}
  .metrics,.service-grid,.comments,.timeline,.price-grid{grid-template-columns:1fr 1fr}
  .intro-grid,.media-grid{grid-template-columns:1fr}
  .check-list{grid-template-columns:1fr}
  .process{grid-template-columns:1fr 1fr}
  .step:nth-child(2):after{display:none}
  .solution-grid{grid-template-columns:1fr 1fr}
  .rating{grid-template-columns:1fr}
  .article-list{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom,.join-inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:430px){
  .metrics,.service-grid,.comments,.timeline,.solution-grid,.article-list{grid-template-columns:1fr}
  .process{grid-template-columns:1fr}
  .step:not(:last-child):after{display:none}
  .actions .button{width:100%}
}