:root{
  --ink:#161a2c;
  --ink-2:#3d4460;
  --ink-3:#6b7186;
  --line:#eae6f6;
  --brand:#6b46f2;
  --brand-deep:#5a37e0;
  --pink:#ff6b9d;
  --teal:#12bfae;
  --orange:#ffa63a;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.68;
  color:var(--ink);
  background-color:#faf8ff;
  background-image:
    radial-gradient(900px 520px at 6% -4%,rgba(107,70,242,.17),transparent 62%),
    radial-gradient(820px 480px at 98% 2%,rgba(255,107,157,.14),transparent 64%),
    radial-gradient(900px 560px at 84% 32%,rgba(18,191,174,.10),transparent 66%),
    radial-gradient(880px 520px at 6% 58%,rgba(255,166,58,.12),transparent 64%),
    radial-gradient(900px 620px at 56% 96%,rgba(107,70,242,.13),transparent 68%);
  background-repeat:no-repeat;
}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;color:var(--ink)}
h1{font-size:clamp(27px,4.2vw,44px);letter-spacing:-.5px}
h2{font-size:clamp(22px,2.9vw,31px);letter-spacing:-.3px}
h3{font-size:17.5px}
p{margin:0}
a{color:var(--brand-deep)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:68px 0}
.section-tight{padding-bottom:52px}
.section-head{max-width:780px;margin-bottom:32px}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--brand-deep);background:#f1ecff;border:1px solid #e2d9ff;padding:5px 13px;border-radius:999px;margin-bottom:14px}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--pink))}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:15.5px}
.grid{display:grid;gap:20px}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 10px 28px rgba(84,63,150,.06);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 42px rgba(84,63,150,.13);border-color:#ddd3fb}
.card p{color:var(--ink-3);font-size:14.5px;margin-top:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:13px 28px;font-size:15px;font-weight:700;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease}
.btn-primary{background:linear-gradient(120deg,#6b46f2,#9a3cf0 55%,#ff6b9d);color:#fff;box-shadow:0 12px 28px rgba(107,70,242,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(107,70,242,.36)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:#fff;color:#372f56;border-color:#ded7f5}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(90,55,224,.14);border-color:#c9b8ff}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:10px}
/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(234,230,246,.9)}
.header-inner{position:relative;display:flex;align-items:center;gap:14px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:17px;flex:0 0 auto}
.brand .ai-page-logo{max-height:34px;width:auto;display:block}
.brand-text{letter-spacing:.02em}
.nav{margin-left:auto}
.nav-links{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:8px 10px;border-radius:9px;color:#3c4157;font-size:14px;text-decoration:none;transition:color .2s ease,background-color .2s ease}
.nav-links a:hover{color:var(--brand-deep);background:#f2eeff}
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;background:#3c4157;position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#3c4157;border-radius:2px;transition:transform .25s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* hero */
.hero{padding:64px 0 56px}
.hero-inner{text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:#463a75;background:rgba(255,255,255,.85);border:1px solid #e5ddfa;padding:7px 16px;border-radius:999px;box-shadow:0 8px 20px rgba(84,63,150,.07)}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--pink));display:inline-block}
.hero h1{margin:22px auto 0;max-width:900px}
.hero h1 em{font-style:normal;color:var(--brand-deep)}
.hero-sub{max-width:760px;margin:20px auto 0;color:var(--ink-2);font-size:16.5px}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 26px;margin-top:24px;color:var(--ink-3);font-size:13.5px}
.hero-points li{position:relative;padding-left:16px}
.hero-points li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--brand))}
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:44px}
.metric{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:16px;padding:18px 14px;text-align:center;box-shadow:0 10px 26px rgba(84,63,150,.07);transition:transform .3s ease,box-shadow .3s ease}
.metric:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(84,63,150,.14)}
.metric strong{display:block;font-size:clamp(21px,2.6vw,29px);font-weight:800;line-height:1.25;color:var(--brand-deep)}
.metric span{font-size:13px;color:var(--ink-3)}
/* about */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.about-text{color:var(--ink-2);font-size:15.5px;margin-top:16px}
.about-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:24px}
.about-list li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;transition:transform .25s ease,box-shadow .25s ease}
.about-list li:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(84,63,150,.1)}
.about-list strong{display:block;font-size:14.5px;color:#231d3f;margin-bottom:3px}
.about-list span{font-size:13px;color:var(--ink-3)}
.figure{background:#f4f1ff;border:1px solid #e9e4fa;border-radius:22px;padding:14px;box-shadow:0 18px 40px rgba(84,63,150,.10)}
.figure img{display:block;width:100%;height:auto;border-radius:14px}
/* service cards */
.card-mark{display:inline-block;width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,#6b46f2,#ff6b9d);margin-bottom:14px;position:relative}
.card-mark::after{content:"";position:absolute;inset:10px;border-radius:4px;background:rgba(255,255,255,.85)}
.card h3{font-size:16.5px}
/* steps */
.step-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;position:relative;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}
.step-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(84,63,150,.12)}
.step-num{display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800;letter-spacing:.06em;color:#fff;background:linear-gradient(135deg,#6b46f2,#a03cf0);border-radius:8px;padding:3px 9px}
.step-card h3{margin-top:12px;font-size:16px}
.step-card p{color:var(--ink-3);font-size:14px;margin-top:8px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-cloud li{padding:7px 14px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:13px;color:#3f3a5c;transition:transform .22s ease,color .22s ease,border-color .22s ease}
.tag-cloud li:hover{transform:translateY(-2px);color:var(--brand-deep);border-color:#c9b8ff}
.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 12px 30px rgba(84,63,150,.07)}
.panel-title{font-size:15px;font-weight:800;color:#231d3f;margin-bottom:4px}
.panel-sub{font-size:13.5px;color:var(--ink-3)}
/* cases */
.case-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 10px 28px rgba(84,63,150,.06);transition:transform .3s ease,box-shadow .3s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:0 20px 42px rgba(84,63,150,.13)}
.case-figure{aspect-ratio:16/10;background:#f4f1ff;display:flex;align-items:center;justify-content:center;padding:12px;border-bottom:1px solid var(--line)}
.case-figure img{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:8px}
.case-body{padding:20px 22px 22px}
.case-body p{color:var(--ink-3);font-size:14px;margin-top:8px}
/* review */
.score-card{display:flex;flex-wrap:wrap;align-items:center;gap:16px 34px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 30px;box-shadow:0 14px 34px rgba(84,63,150,.09);margin-bottom:24px}
.score-main{display:flex;align-items:baseline;gap:6px}
.score-num{font-size:46px;font-weight:800;color:var(--brand-deep);line-height:1}
.score-total{font-size:16px;color:var(--ink-3);font-weight:700}
.score-stars{font-size:19px;color:#f6a517;letter-spacing:2px;margin:0}
.score-label{font-size:14px;font-weight:700;color:#2c2550}
.score-desc{flex:1 1 260px;font-size:14px;color:var(--ink-3);min-width:220px}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 28px rgba(84,63,150,.06)}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14.5px}
thead th{background:#f7f4ff;color:#332c5c;font-weight:800;text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap}
tbody td{padding:14px 18px;border-bottom:1px solid #f3f0fb;color:var(--ink-2);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody td:first-child{color:#231d3f;font-weight:700;white-space:nowrap}
tbody tr:hover td{background:#faf8ff}
.hl{color:var(--brand-deep);font-weight:700}
/* reviews */
.quote-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 10px 28px rgba(84,63,150,.06);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.quote-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(84,63,150,.13)}
.quote-text{color:var(--ink-2);font-size:14.5px;flex:1}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px dashed #ebe6f8}
.avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#6b46f2,#ff6b9d);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:0 0 auto}
.quote-user strong{display:block;font-size:14px;color:#231d3f}
.quote-user span{font-size:12.5px;color:var(--ink-3)}
/* help */
.article-list{display:grid;gap:12px}
.article-list a{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;text-decoration:none;color:#241f42;font-weight:600;font-size:14.5px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.article-list a:hover{transform:translateX(4px);border-color:#c9b8ff;box-shadow:0 12px 26px rgba(84,63,150,.1)}
.article-list a span{color:#8b84a8;font-size:12.5px;font-weight:500;white-space:nowrap}
/* faq */
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.open{border-color:#d6c9ff;box-shadow:0 14px 32px rgba(84,63,150,.1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:18px 22px;font-size:15px;font-weight:700;color:#241f42;font-family:inherit;line-height:1.5}
.faq-q:hover{color:var(--brand-deep)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:#8b7ec9;border-radius:2px;transition:transform .3s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 22px 18px;color:var(--ink-3);font-size:14.5px}
/* form */
.demand-form{display:grid;gap:16px}
.field{display:grid;gap:7px}
.field label{font-size:13.5px;font-weight:700;color:#2c2550}
.field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:14.5px;color:var(--ink);background:#fbfaff;border:1px solid #e4def5;border-radius:12px;padding:12px 14px;transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease}
.field input::placeholder,.field textarea::placeholder{color:#a6a0bd}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:#b59bff;background:#fff;box-shadow:0 0 0 4px rgba(107,70,242,.12)}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:12.5px;color:var(--ink-3)}
.info-list{display:grid;gap:14px;margin-top:24px}
.info-list li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;font-size:14px;color:var(--ink-2)}
.info-list strong{display:block;color:#231d3f;font-size:14.5px;margin-bottom:3px}
/* contact */
.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:6px}
.contact-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;transition:transform .25s ease,box-shadow .25s ease}
.contact-item:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(84,63,150,.1)}
.contact-item span{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:4px}
.contact-item strong{font-size:15px;color:#231d3f;word-break:break-all}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;text-align:center;box-shadow:0 14px 34px rgba(84,63,150,.09)}
.qr-card img{display:block;width:100%;max-width:220px;height:auto;margin:0 auto 12px;border-radius:12px}
.qr-card p{font-size:13px;color:var(--ink-3)}
/* partner */
.partner-band{background:linear-gradient(120deg,rgba(107,70,242,.10),rgba(255,107,157,.10) 55%,rgba(18,191,174,.10));border:1px solid #e6dffa;border-radius:24px;padding:34px}
/* footer */
.site-footer{background:#f2eefc;border-top:1px solid #e4dcf8;color:#2a2444;padding:44px 0 26px;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.2fr 1fr;gap:34px}
.footer-brand{font-size:17px;font-weight:800;color:#221c3d;margin-bottom:10px}
.footer-desc{font-size:13.5px;color:#544c78;max-width:520px}
.footer-title{font-size:14px;font-weight:800;color:#221c3d;margin-bottom:12px}
.footer-links{display:flex;flex-wrap:wrap;gap:10px 18px}
.footer-links a{font-size:13.5px;color:#4b3f7a;text-decoration:none;transition:color .2s ease}
.footer-links a:hover{color:#2f1f6e;text-decoration:underline}
.footer-bottom{margin-top:26px;padding-top:18px;border-top:1px solid #e0d7f5;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;font-size:12.5px;color:#5c5480}
.footer-bottom a{color:#4b3f7a;text-decoration:none}
.footer-bottom a:hover{text-decoration:underline}
/* float */
.float-dock{position:fixed;right:20px;bottom:20px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.float-btn{width:58px;height:58px;border-radius:50%;border:none;cursor:pointer;color:#fff;font-size:13.5px;font-weight:700;font-family:inherit;background:linear-gradient(135deg,#6b46f2,#ff6b9d);box-shadow:0 14px 30px rgba(107,70,242,.36);transition:transform .25s ease,box-shadow .25s ease}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 20px 38px rgba(107,70,242,.44)}
.float-panel{display:none;width:236px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 22px 46px rgba(60,40,120,.2);text-align:center}
.float-panel.show{display:block;animation:rise .3s ease both}
.float-panel img{display:block;width:100%;max-width:150px;height:auto;margin:0 auto 10px;border-radius:10px}
.float-title{font-size:13.5px;font-weight:800;color:#231d3f;margin-bottom:8px}
.float-line{font-size:12.5px;color:var(--ink-3);line-height:1.7}
.to-top{position:fixed;right:26px;bottom:92px;z-index:70;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:#4b4270;font-size:17px;line-height:1;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s ease,transform .3s ease;box-shadow:0 10px 24px rgba(60,40,120,.14)}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}
/* animation */
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.hero .eyebrow,.hero h1,.hero .hero-sub,.hero .hero-actions,.hero .hero-points,.hero .metrics{animation:rise .8s ease both}
.hero h1{animation-delay:.06s}
.hero .hero-sub{animation-delay:.12s}
.hero .hero-actions{animation-delay:.18s}
.hero .hero-points{animation-delay:.24s}
.hero .metrics{animation-delay:.3s}
.js-anim .reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.js-anim .reveal.in{opacity:1;transform:none}
/* responsive */
@media (max-width:1119px){
  .header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  .nav{order:3;flex:1 0 100%;margin-left:0;display:none}
  .nav.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{padding:12px 6px;border-bottom:1px solid #f1eef9;border-radius:0}
  .header-actions{margin-left:auto}
  .nav-toggle{display:inline-flex}
}
@media (max-width:960px){
  .section{padding:56px 0}
  .cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .about-grid{grid-template-columns:1fr;gap:28px}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr;gap:26px}
}
@media (max-width:640px){
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .about-list{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero{padding:46px 0 42px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .score-card{padding:22px}
  .score-num{font-size:38px}
  .partner-band{padding:24px 20px}
  .to-top{right:20px;bottom:88px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-delay:0ms!important;transition-duration:.001ms!important}
  .js-anim .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}