:root{
  --ink:#182333;--muted:#647184;--paper:#fffdf8;--cream:#f7f3e9;--line:#e7e2d8;
  --blue:#1769ff;--cyan:#18b9c5;--yellow:#ffd84d;--coral:#ff745d;--green:#43bb83;
  --shadow:0 18px 45px rgba(32,45,68,.1);--radius:18px
}
*{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","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(231,226,216,.8);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;gap:11px;font-weight:800;white-space:nowrap}
.ai-page-logo{width:42px;max-width:100%;height:auto}
.brand-name{font-size:19px;letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{padding:8px 10px;font-size:13px;color:#425066;white-space:nowrap}
.nav-links a:hover{color:var(--blue)}
.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease}
.nav-cta,.button-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(23,105,255,.2)}
.nav-cta:hover,.button-primary:hover{transform:translateY(-2px);background:#0759e8}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:20px;color:var(--ink)}
.hero{position:relative;overflow:hidden;padding:92px 0 70px;background:linear-gradient(135deg,#fffdf8 0%,#eef8ff 55%,#fff8df 100%)}
.hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border-radius:45% 55% 60% 40%;opacity:.65;transform:rotate(-18deg)}
.hero:before{width:270px;height:110px;right:-60px;top:90px;background:var(--yellow)}
.hero:after{width:190px;height:90px;left:-75px;bottom:40px;background:#9ee7e4}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#0759d9;font-size:13px;font-weight:800;letter-spacing:1px}
.eyebrow:before{content:"";width:28px;height:5px;border-radius:8px;background:var(--coral);transform:rotate(-5deg)}
h1,h2,h3{line-height:1.2;margin:0 0 16px;letter-spacing:0}
h1{font-size:clamp(38px,6vw,68px);max-width:650px}
h2{font-size:clamp(28px,4vw,43px)}
h3{font-size:20px}
.hero p{max-width:650px;color:var(--muted);font-size:18px;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.button-secondary{border:1px solid #b8c5d8;background:#fff;color:var(--ink)}
.button-secondary:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.hero-panel{background:#17283d;color:#fff;border-radius:25px;padding:28px;box-shadow:var(--shadow);position:relative;transform:rotate(2deg)}
.hero-panel:after{content:"";position:absolute;right:-18px;bottom:-18px;width:78px;height:78px;background:var(--coral);border-radius:50% 20% 50% 30%;z-index:-1}
.panel-title{font-weight:800;font-size:18px;margin-bottom:20px}
.signal{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.signal:last-child{border-bottom:0}
.signal strong{font-size:25px;color:var(--yellow)}
.signal span{color:#dbe5f2;font-size:13px}
.section{padding:86px 0}
.section-tint{background:var(--cream)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
.section-head p{max-width:570px;color:var(--muted);margin:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:38px}
.stat{padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px}
.stat strong{font-size:30px;color:var(--blue);display:block}
.stat span{font-size:14px;color:var(--muted)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.about-copy p{color:var(--muted)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.tag{padding:7px 12px;border-radius:30px;background:#e6f6f4;color:#087d82;font-size:13px}
.tag:nth-child(3n){background:#fff0c2;color:#725800}
.tag:nth-child(4n){background:#ffe5df;color:#a6402f}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.feature{padding:20px;border-left:4px solid var(--cyan);background:#fff;border-radius:0 14px 14px 0;box-shadow:0 8px 22px rgba(32,45,68,.05)}
.feature:nth-child(2n){border-color:var(--coral)}
.feature strong{display:block;margin-bottom:6px}
.feature span{font-size:14px;color:var(--muted)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s;position:relative;overflow:hidden}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.service-card:before{content:"";display:block;width:34px;height:7px;border-radius:8px;background:var(--coral);margin-bottom:20px;transform:rotate(-4deg)}
.service-card:nth-child(3n):before{background:var(--yellow)}
.service-card:nth-child(2n):before{background:var(--cyan)}
.service-card p{font-size:14px;color:var(--muted);margin:0}
.service-card a{display:inline-block;margin-top:15px;color:var(--blue);font-size:14px;font-weight:700}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--blue)}
.process-step{padding:24px 20px 10px;border-right:1px solid var(--line);position:relative}
.process-step:last-child{border-right:0}
.process-step b{display:block;color:var(--blue);font-size:14px;margin-bottom:24px}
.process-step b:before{content:"";display:block;width:13px;height:13px;background:var(--yellow);border:4px solid var(--paper);border-radius:50%;position:absolute;top:-10px}
.process-step p{color:var(--muted);font-size:14px}
.solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.solution{padding:24px;background:#17283d;color:#fff;border-radius:18px}
.solution:nth-child(2){background:#1769ff}
.solution:nth-child(3){background:#087d82}
.solution:nth-child(4){background:#c95443}
.solution p{color:rgba(255,255,255,.78);font-size:14px;margin-bottom:0}
.media-strip{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}
.media-frame{overflow:hidden;border-radius:16px;background:#fff;border:1px solid var(--line)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.case-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.case .case-image{aspect-ratio:16/9;background:#dcecf7;overflow:hidden}
.case .case-image img{width:100%;height:100%;object-fit:cover}
.case-body{padding:20px}
.case-body p{color:var(--muted);font-size:14px;margin:0}
.compare-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:16px}
.compare{width:100%;min-width:720px;border-collapse:collapse;text-align:left}
.compare th,.compare td{padding:16px;border-bottom:1px solid var(--line);vertical-align:top}
.compare th{background:#eef6ff;color:#204c91}
.compare tr:last-child td{border-bottom:0}
.score{background:#17283d;color:#fff;border-radius:16px;padding:28px;display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:20px}
.score strong{font-size:40px;color:var(--yellow)}
.score span{color:#d9e5f4}
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.price{padding:24px;border:1px solid var(--line);background:#fff;border-radius:16px}
.price.featured{border:2px solid var(--blue);transform:translateY(-8px)}
.price strong{font-size:28px;color:var(--blue)}
.price p{color:var(--muted);font-size:14px}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{padding:22px;background:#fff;border-radius:16px;border:1px solid var(--line)}
.stars{color:#e5a900;letter-spacing:2px}
.review p{font-size:14px;margin:12px 0;color:#465367}
.review cite{font-style:normal;font-weight:700;font-size:13px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 18px}
summary{cursor:pointer;font-weight:700;padding:17px 0;list-style:none}
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 0 17px;color:var(--muted);font-size:14px}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.article{padding:20px;background:#fff;border-top:4px solid var(--coral);border-radius:0 0 14px 14px}
.article:nth-child(2){border-color:var(--cyan)}
.article:nth-child(3){border-color:var(--yellow)}
.article span{font-size:12px;color:var(--muted)}
.article h3{font-size:18px;margin:10px 0}
.form-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;align-items:start}
.contact-note{background:#17283d;color:#fff;padding:28px;border-radius:18px}
.contact-note p{color:#d6e0ed}
.contact-list{padding:0;margin:22px 0 0;list-style:none}
.contact-list li{padding:8px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:14px}
form{background:#fff;padding:26px;border:1px solid var(--line);border-radius:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-size:13px;font-weight:700}
input,select,textarea{width:100%;margin-top:7px;padding:12px;border:1px solid #d8dfe8;border-radius:9px;font:inherit;background:#fff}
textarea{min-height:120px;resize:vertical}
.full{grid-column:1/-1}
.qr{width:116px;margin-top:18px;border-radius:8px}
footer{background:#182333;color:#dce5f0;padding:46px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px}
footer h3{color:#fff;font-size:18px}
footer p,footer a{font-size:13px;color:#aebdce}
.footer-links{display:flex;flex-wrap:wrap;gap:10px 16px}
.footer-bottom{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#9aabbe}
.float-tools{position:fixed;right:18px;bottom:20px;z-index:15;display:flex;flex-direction:column;gap:9px}
.float-tools a{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800;box-shadow:0 8px 20px rgba(23,105,255,.25)}
.float-tools a:last-child{background:var(--coral)}
.reveal{opacity:0;transform:translateY(18px);transition:.65s ease}
.reveal.visible{opacity:1;transform:none}
@media(max-width:980px){
  .nav-links{display:none;position:absolute;left:18px;right:18px;top:70px;background:#fffdf8;border:1px solid var(--line);padding:10px;border-radius:12px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex;flex-direction:column;align-items:stretch}
  .nav-links a{padding:10px 12px}
  .menu-toggle{display:block}
  .hero-grid,.about-grid,.form-layout{grid-template-columns:1fr}
  .hero-panel{max-width:520px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .service-grid,.case-list,.reviews{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(2,1fr);border-top:0}
  .process-step{border-top:2px solid var(--blue);border-right:0}
}
@media(max-width:620px){
  .container{width:min(100% - 26px,1180px)}
  .navbar{min-height:68px}
  .brand-name{font-size:16px}
  .nav-cta{display:none}
  .hero{padding:62px 0 50px}
  h1{font-size:40px}
  .hero p{font-size:16px}
  .section{padding:58px 0}
  .section-head{display:block}
  .section-head p{margin-top:12px}
  .stats,.service-grid,.case-list,.reviews,.faq-grid,.article-grid,.pricing,.feature-list,.solution-grid,.footer-grid{grid-template-columns:1fr}
  .process{grid-template-columns:1fr}
  .process-step{border-top:1px solid var(--line);border-right:0}
  .media-strip{grid-template-columns:1fr}
  .media-frame{max-height:260px}
  .score{display:block}
  .score strong{display:block;margin-bottom:8px}
  .price.featured{transform:none}
  .form-grid{grid-template-columns:1fr}
  .full{grid-column:auto}
}