:root{--ink:#20242b;--muted:#68717d;--orange:#f45125;--orange-dark:#c73518;--gold:#ffb21c;--cream:#fff8f1;--line:#eadfd7;--paper:#fff;--dark:#20242b;--shadow:0 16px 42px rgba(38,34,30,.09);--radius:10px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,248,241,.94);border-bottom:1px solid rgba(234,223,215,.9);backdrop-filter:blur(12px)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;min-width:170px}
.ai-page-logo{display:block;width:42px;max-height:42px;object-fit:contain}
.brand strong{font-size:19px;letter-spacing:1px}
.nav-toggle{display:none;border:1px solid var(--line);background:var(--paper);padding:8px 10px;border-radius:6px;font-size:20px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{font-size:13px;color:#4d535a;padding:8px 9px;transition:.2s}
.nav-links a:hover{color:var(--orange)}
.nav-cta{background:var(--orange)!important;color:#fff!important;padding:9px 14px!important;border-radius:5px;margin-left:9px}
.hero{position:relative;overflow:hidden;background:linear-gradient(132deg,#fff5e8 0%,#fff 51%,#ffe7d6 100%);padding:82px 0 70px;border-bottom:1px solid #f0d6c7}
.hero:before{content:"";position:absolute;width:420px;height:420px;right:-110px;top:-160px;border:1px solid rgba(244,81,37,.2);border-radius:50%;box-shadow:0 0 0 28px rgba(244,81,37,.04),0 0 0 58px rgba(244,81,37,.035)}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:55px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase}
.kicker:before{content:"";width:28px;height:2px;background:var(--orange)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,70px);line-height:1.12;letter-spacing:0;margin:18px 0 20px;max-width:690px}
.hero-copy{font-size:18px;color:#555c63;max-width:660px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:10px 19px;border-radius:5px;border:1px solid var(--orange);font-weight:700;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(244,81,37,.2)}
.btn-primary{background:var(--orange);color:#fff}
.btn-outline{color:var(--orange-dark);background:#fff}
.hero-note{font-size:13px;color:#727a82}
.hero-panel{position:relative;border-left:3px solid var(--orange);padding:8px 0 8px 25px}
.hero-panel h2{font-size:22px;margin-bottom:14px}
.hero-panel p{color:var(--muted);font-size:14px}
.hero-points{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:20px}
.hero-point{padding:13px 14px;background:#fff;border:1px solid #f0d9cd;border-radius:7px}
.hero-point b{display:block;color:var(--orange);font-size:20px}
.hero-point span{font-size:12px;color:var(--muted)}
section{padding:76px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:32px}
.section-head h2{font-size:34px;line-height:1.2;margin:0}
.section-head p{max-width:540px;color:var(--muted);margin:0}
.band{background:#fff}
.tinted{background:#fff1e7}
.dark-band{background:var(--dark);color:#fff}
.dark-band .section-head p,.dark-band .muted{color:#bec4c9}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{background:#fff;border-top:3px solid var(--orange);padding:22px 20px;box-shadow:var(--shadow)}
.metric strong{font-size:30px;color:var(--orange);display:block}
.metric span{font-size:14px;color:var(--muted)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:start}
.lead{font-size:19px;color:#424950}
.check-list{padding:0;margin:23px 0 0;list-style:none;display:grid;gap:12px}
.check-list li{padding-left:27px;position:relative}
.check-list li:before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:bold}
.capability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.capability{padding:24px;background:var(--cream);border:1px solid var(--line);transition:.25s}
.capability:hover,.review:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.capability b{display:block;font-size:18px;margin-bottom:9px}
.capability p{font-size:14px;color:var(--muted);margin-bottom:0}
.icon{width:37px;height:37px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:6px;font-weight:bold;margin-bottom:17px}
.service-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.service-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.service-item{padding:17px 18px;border-left:3px solid var(--gold);background:#fff;border-radius:4px}
.service-item b{font-size:15px}
.service-item p{font-size:13px;color:var(--muted);margin:5px 0 0}
.highlight-box{background:var(--orange);color:#fff;padding:29px;border-radius:8px}
.highlight-box h3{font-size:25px;margin-bottom:12px}
.highlight-box p{color:#fff0e7;font-size:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.tag{padding:7px 11px;border:1px solid rgba(255,255,255,.4);border-radius:4px;font-size:13px;color:#fff}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:25px 17px;border-right:1px solid var(--line);position:relative}
.step:last-child{border-right:0}
.step-number{font-size:34px;font-weight:bold;color:#f1c4ad;line-height:1}
.step h3{font-size:17px;margin:15px 0 7px}
.step p{font-size:13px;color:var(--muted);margin:0}
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.solution{background:#fff;border:1px solid var(--line);padding:22px}
.solution h3{font-size:18px;margin-bottom:9px}
.solution p{font-size:14px;color:var(--muted);margin:0}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}
.compare{width:100%;border-collapse:collapse;min-width:720px}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
.compare th{background:#fff1e7;color:#7d301e}
.compare td:first-child{font-weight:bold}
.compare .winner{color:var(--orange-dark);font-weight:bold}
.score-box{display:flex;align-items:center;gap:22px;margin-bottom:24px}
.score{font-size:45px;color:var(--orange);font-weight:bold;line-height:1}
.stars{color:var(--gold);font-size:24px;letter-spacing:2px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.case{background:#fff;border:1px solid var(--line);transition:.25s;overflow:hidden}
.media-box{background:#f5e9e0;aspect-ratio:16/8;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-box img{width:100%;height:100%;object-fit:cover}
.case-body{padding:19px}
.case-body h3{margin-bottom:7px;font-size:18px}
.case-body p{font-size:13px;color:var(--muted);margin:0}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{background:#fff;padding:22px;border:1px solid var(--line);transition:.25s}
.review p{font-size:14px;margin-bottom:16px}
.review footer{font-size:13px;color:var(--orange-dark);font-weight:bold}
.network{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.network-box{padding:26px;background:#fff;border:1px solid var(--line)}
.network-box h3{margin-bottom:12px}
.network-box p{font-size:14px;color:var(--muted)}
.articles{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.article{padding:20px;background:#fff;border-bottom:3px solid var(--orange)}
.article b{display:block;font-size:17px;margin-bottom:6px}
.article span{font-size:13px;color:var(--muted)}
.faq{max-width:900px;margin:auto}
.faq details{background:#fff;border-bottom:1px solid var(--line);padding:18px 20px}
.faq summary{cursor:pointer;font-weight:bold;list-style:none;position:relative;padding-right:25px}
.faq summary:after{content:"+";position:absolute;right:0;color:var(--orange);font-size:20px}
.faq details[open] summary:after{content:"−"}
.faq details p{color:var(--muted);font-size:14px;margin:12px 25px 0 0}
.form-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:start}
.contact-side{background:var(--dark);color:#fff;padding:28px}
.contact-side p{color:#c8cdd1;font-size:14px}
.qr{width:130px;background:#fff;padding:7px;margin-top:12px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.form label{font-size:13px;font-weight:bold}
.form input,.form select,.form textarea{display:block;width:100%;margin-top:7px;border:1px solid #d8d2cc;padding:12px;border-radius:4px;background:#fff;font:inherit;color:var(--ink)}
.form textarea{min-height:120px;resize:vertical}
.full{grid-column:1/-1}
.footer{background:#191c20;color:#fff;padding:45px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:35px}
.footer h3{font-size:16px;margin-bottom:13px}
.footer p,.footer a{color:#bfc4c8;font-size:13px}
.footer-links{display:flex;flex-wrap:wrap;gap:9px 16px}
.footer-bottom{border-top:1px solid #363a3e;margin-top:28px;padding-top:18px;color:#9da3a8;font-size:12px}
.float-contact{position:fixed;right:18px;bottom:20px;z-index:15;background:var(--orange);color:#fff;padding:12px 15px;border-radius:6px;box-shadow:0 10px 25px rgba(100,40,20,.25);font-size:13px}
.to-top{position:fixed;right:18px;bottom:75px;border:0;background:#fff;color:var(--orange);width:37px;height:37px;border-radius:50%;box-shadow:var(--shadow);cursor:pointer}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s,transform .7s}
.reveal.visible{opacity:1;transform:none}
@media(max-width:1000px){
.nav-links a{padding:8px 5px;font-size:12px}
.hero-grid{gap:30px}.metric-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
.container{width:min(100% - 28px,600px)}
.header-inner{min-height:64px}.nav-toggle{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:65px;background:#fff8f1;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
.nav-links.open{display:flex}.nav-links a{padding:10px 12px}.nav-cta{margin:5px 0 0;text-align:center}
.hero{padding:58px 0 48px}.hero-grid,.about-grid,.service-layout,.network,.form-layout{grid-template-columns:1fr}
h1{font-size:42px}.hero-panel{border-left:0;border-top:3px solid var(--orange);padding:22px 0 0}
.section-head{display:block}.section-head h2{font-size:29px;margin-bottom:10px}
.capability-grid,.solution-grid,.case-grid,.reviews{grid-template-columns:1fr}
.service-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr;border-top:0}.step{border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:50px 1fr;gap:10px}.step-number{grid-row:span 2}.step h3{margin:0}.step p{grid-column:2}
.articles{grid-template-columns:1fr}.form{grid-template-columns:1fr}.full{grid-column:auto}.footer-grid{grid-template-columns:1fr;gap:20px}
}