:root{
  --ink:#15132a;
  --ink-2:#3a3557;
  --muted:#6b6590;
  --violet:#6a2cff;
  --pink:#ff2d78;
  --cyan:#00a8ff;
  --lime:#00b562;
  --amber:#f08a00;
  --line:rgba(21,19,42,.09);
  --radius:18px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background-color:#fdfaff;
  background-image:
    radial-gradient(820px 520px at 6% -8%, rgba(106,44,255,.16), rgba(106,44,255,0) 62%),
    radial-gradient(720px 460px at 98% 2%, rgba(255,45,120,.13), rgba(255,45,120,0) 60%),
    radial-gradient(880px 620px at 50% 106%, rgba(0,168,255,.13), rgba(0,168,255,0) 62%);
  background-attachment:fixed;
}
h1,h2,h3,h4{line-height:1.32;margin:0;letter-spacing:-.2px;}
p{margin:0 0 12px;}
p:last-child{margin-bottom:0;}
img{max-width:100%;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.sec{padding:64px 0;}
.sec-head{max-width:760px;margin:0 auto 34px;text-align:center;}
.sec-head h2{font-size:clamp(22px,2.9vw,32px);font-weight:800;margin-bottom:10px;}
.sec-head p{color:var(--muted);font-size:15px;margin:0;}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--violet);margin-bottom:10px;text-transform:uppercase;}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(253,250,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;}
.brand{display:flex;align-items:center;flex-shrink:0;}
.ai-page-logo{display:block;height:34px;width:auto;max-width:160px;}
.nav{display:flex;align-items:center;gap:16px;}
.nav-links{display:flex;align-items:center;gap:0;margin:0;padding:0;}
.nav-links a{display:block;padding:9px 12px;font-size:14.5px;font-weight:500;color:var(--ink-2);border-radius:9px;white-space:nowrap;transition:color .18s ease,background .18s ease;}
.nav-links a:hover{color:var(--violet);background:rgba(106,44,255,.08);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;}
.btn-primary{background:linear-gradient(120deg,#6a2cff,#ff2d78 58%,#00a8ff 118%);color:#fff;box-shadow:0 12px 26px rgba(106,44,255,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(106,44,255,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink);border-color:rgba(21,19,42,.14);}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(106,44,255,.4);color:var(--violet);box-shadow:0 12px 24px rgba(106,44,255,.14);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* hero */
.hero{position:relative;padding:58px 0 46px;overflow:hidden;}
.hero::before{content:"";position:absolute;width:440px;height:440px;top:-190px;right:-110px;border-radius:50%;background:radial-gradient(circle,rgba(255,45,120,.26),rgba(255,45,120,0) 70%);pointer-events:none;}
.hero::after{content:"";position:absolute;width:380px;height:380px;bottom:-190px;left:-120px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,255,.24),rgba(0,168,255,0) 70%);pointer-events:none;}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:center;}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;font-size:13px;font-weight:600;color:#4a2fbf;background:rgba(106,44,255,.1);border:1px solid rgba(106,44,255,.24);margin-bottom:18px;}
.pill::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#6a2cff,#ff2d78);}
.hero h1{font-size:clamp(28px,4.4vw,46px);font-weight:900;margin-bottom:16px;letter-spacing:-1px;}
.hero h1 em{font-style:normal;color:var(--violet);}
.hero-lead{font-size:16px;color:var(--ink-2);max-width:560px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;}
.hero-tags li{font-size:13px;padding:6px 13px;border-radius:8px;background:#fff;border:1px solid rgba(21,19,42,.1);color:var(--ink-2);font-weight:500;}
.hero-side{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.stat-card{background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:16px;padding:20px 16px;box-shadow:0 14px 32px rgba(106,44,255,.1);transition:transform .22s ease,box-shadow .22s ease;}
.stat-card:hover{transform:translateY(-4px);box-shadow:0 20px 38px rgba(106,44,255,.18);}
.stat-num{display:block;font-size:26px;font-weight:900;letter-spacing:-.6px;margin-bottom:2px;}
.stat-label{display:block;font-size:13px;color:var(--muted);}
.stat-card:nth-child(1) .stat-num{color:#6a2cff;}
.stat-card:nth-child(2) .stat-num{color:#e0175e;}
.stat-card:nth-child(3) .stat-num{color:#0072c6;}
.stat-card:nth-child(4) .stat-num{color:#00894b;}
.stat-card:nth-child(2){animation:floaty 6.5s ease-in-out infinite;}
.stat-card:nth-child(3){animation:floaty 7.5s ease-in-out infinite .6s;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-7px);}}

/* generic card */
.card{position:relative;overflow:hidden;background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:var(--radius);padding:22px;box-shadow:0 2px 10px rgba(21,19,42,.04);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#6a2cff,#ff2d78,#00a8ff);opacity:.38;transition:opacity .22s ease;}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(106,44,255,.14);border-color:rgba(106,44,255,.3);}
.card:hover::before{opacity:1;}
.card h3{font-size:17px;font-weight:800;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--ink-2);margin-bottom:0;}
.grid{display:grid;gap:18px;}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(255px,1fr));}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(215px,1fr));}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chips li{font-size:12.5px;padding:4px 10px;border-radius:8px;background:rgba(106,44,255,.08);color:#4a2fbf;font-weight:600;}

/* about */
.about-copy{max-width:900px;margin:0 auto 32px;text-align:center;color:var(--ink-2);font-size:15.5px;}

/* flow */
.flow-steps{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;}
.flow-steps li{font-size:12.5px;padding:5px 10px;border-radius:8px;background:rgba(0,168,255,.1);color:#0a5b86;font-weight:600;}
.flow-steps li:not(:last-child)::after{content:"→";margin-left:8px;color:#9dc0d6;font-weight:400;}

/* tag cloud */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.tag-cloud li{padding:7px 15px;border-radius:999px;font-size:13.5px;font-weight:500;background:#fff;border:1px solid rgba(106,44,255,.22);color:var(--ink-2);transition:transform .18s ease,border-color .18s ease,color .18s ease;}
.tag-cloud li:hover{transform:translateY(-2px);border-color:var(--violet);color:var(--violet);}

/* timeline */
.timeline{display:grid;gap:14px;}
.timeline li{position:relative;background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:var(--radius);padding:18px 22px 18px 74px;box-shadow:0 2px 10px rgba(21,19,42,.04);transition:transform .2s ease,box-shadow .2s ease;}
.timeline li:hover{transform:translateX(4px);box-shadow:0 14px 30px rgba(106,44,255,.12);}
.timeline li::before{content:attr(data-step);position:absolute;left:20px;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:900;color:#fff;background:linear-gradient(135deg,#6a2cff,#ff2d78);}
.timeline h3{font-size:16px;font-weight:800;margin-bottom:4px;}
.timeline p{font-size:14px;color:var(--muted);margin:0;}

/* cases */
.case-media{width:100%;aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:linear-gradient(135deg,#f2edff,#e7f6ff);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.case-media img{width:100%;height:100%;object-fit:contain;display:block;}
.case-card h3{font-size:16px;}
.case-card .case-note{font-size:13px;color:var(--muted);margin-top:10px;}

/* price cards */
.price-card{background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:var(--radius);padding:26px 22px;box-shadow:0 2px 10px rgba(21,19,42,.04);transition:transform .22s ease,box-shadow .22s ease;}
.price-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(106,44,255,.14);}
.price-card .price-tag{display:inline-block;font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:999px;background:rgba(255,45,120,.1);color:#c00f4f;margin-bottom:12px;}
.price-card h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.price-card p{font-size:14px;color:var(--ink-2);}
.price-card ul{margin-top:14px;display:grid;gap:8px;}
.price-card ul li{font-size:13.5px;color:var(--muted);padding-left:18px;position:relative;}
.price-card ul li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#6a2cff,#00a8ff);}

/* review layout */
.review-layout{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:start;}
.score-card{background:linear-gradient(160deg,#ffffff,#f7f2ff);border:1px solid rgba(106,44,255,.22);border-radius:22px;padding:28px 22px;text-align:center;box-shadow:0 16px 36px rgba(106,44,255,.14);}
.score-num{font-size:52px;font-weight:900;line-height:1;letter-spacing:-2px;color:var(--violet);}
.score-total{font-size:16px;font-weight:700;color:var(--muted);margin-left:4px;}
.stars{color:#f08a00;font-size:20px;letter-spacing:3px;margin:12px 0 8px;}
.score-card p{font-size:14px;color:var(--ink-2);margin:0;}

/* table */
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid rgba(21,19,42,.08);background:#fff;box-shadow:0 2px 10px rgba(21,19,42,.04);}
table{width:100%;border-collapse:collapse;min-width:660px;font-size:14.5px;}
thead th{background:rgba(106,44,255,.07);color:var(--ink);font-weight:800;text-align:left;padding:14px 16px;border-bottom:1px solid rgba(21,19,42,.08);white-space:nowrap;}
tbody td{padding:13px 16px;border-bottom:1px solid rgba(21,19,42,.06);color:var(--ink-2);vertical-align:top;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:rgba(0,168,255,.05);}
td strong{color:var(--ink);font-weight:700;}

/* testimonial */
.quote-card{display:flex;flex-direction:column;gap:14px;}
.quote-head{display:flex;align-items:center;gap:12px;}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:15px;background:linear-gradient(135deg,#6a2cff,#ff2d78);flex-shrink:0;}
.quote-name{font-size:14.5px;font-weight:800;display:block;}
.quote-role{font-size:12.5px;color:var(--muted);display:block;}
.quote-card blockquote{margin:0;font-size:14.5px;color:var(--ink-2);}

/* contact / form */
.contact-layout{display:grid;grid-template-columns:1.35fr .85fr;gap:22px;align-items:start;}
.panel{background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:22px;padding:26px;box-shadow:0 10px 30px rgba(21,19,42,.05);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;}
.form-field{display:block;margin-bottom:14px;}
.form-field > span{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);margin-bottom:6px;}
.form-field input,.form-field select,.form-field textarea{width:100%;padding:12px 14px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfaff;border:1px solid rgba(21,19,42,.14);border-radius:12px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;}
.form-field input::placeholder,.form-field textarea::placeholder{color:#9c97b8;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--violet);background:#fff;box-shadow:0 0 0 3px rgba(106,44,255,.14);}
.form-field textarea{resize:vertical;min-height:110px;}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;}

.contact-list{display:grid;gap:12px;margin-top:16px;}
.contact-list li{display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--ink-2);}
.contact-list b{flex-shrink:0;font-size:13px;font-weight:800;color:var(--violet);min-width:72px;}
.qr-box{display:flex;align-items:center;gap:14px;margin-top:16px;padding:14px;border-radius:14px;background:rgba(106,44,255,.06);}
.qr-box img{width:96px;height:96px;object-fit:contain;border-radius:10px;background:#fff;display:block;}
.qr-box span{font-size:13px;color:var(--ink-2);}

/* join banner */
.join-banner{position:relative;overflow:hidden;border-radius:24px;padding:34px 32px;background:linear-gradient(120deg,#5c1fff,#a81bff 46%,#ff2d78 100%);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;box-shadow:0 20px 44px rgba(106,44,255,.32);}
.join-banner::after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;top:-110px;right:-60px;background:rgba(255,255,255,.16);pointer-events:none;}
.join-banner h2{font-size:clamp(20px,2.4vw,26px);font-weight:900;margin-bottom:8px;color:#fff;}
.join-banner p{margin:0;font-size:14.5px;color:rgba(255,255,255,.92);max-width:640px;}
.join-banner .btn{background:#fff;color:#5c1fff;box-shadow:0 10px 24px rgba(0,0,0,.16);}
.join-banner .btn:hover{transform:translateY(-2px);}

/* insights */
.insight-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;align-items:start;}
.insight-col h3{font-size:16.5px;font-weight:800;margin-bottom:14px;padding-left:12px;position:relative;}
.insight-col h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:linear-gradient(180deg,#6a2cff,#ff2d78);}
.article-list{display:grid;gap:10px;}
.article-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-2);padding:11px 14px;border-radius:12px;background:#fff;border:1px solid rgba(21,19,42,.07);transition:transform .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;}
.article-list a:hover{transform:translateY(-2px);color:var(--violet);border-color:rgba(106,44,255,.3);box-shadow:0 10px 22px rgba(106,44,255,.12);}
.article-list a::before{content:"›";color:var(--violet);font-weight:900;line-height:1.4;}
.wiki-list{display:flex;flex-wrap:wrap;gap:9px;}
.wiki-list li{font-size:13px;padding:6px 12px;border-radius:9px;background:rgba(0,168,255,.09);color:#0a5b86;font-weight:600;}

/* faq */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid rgba(21,19,42,.08);border-radius:16px;box-shadow:0 2px 10px rgba(21,19,42,.04);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item[open]{border-color:rgba(106,44,255,.34);box-shadow:0 14px 30px rgba(106,44,255,.12);}
.faq-item summary{list-style:none;cursor:pointer;padding:17px 52px 17px 20px;font-size:15px;font-weight:700;color:var(--ink);position:relative;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:600;color:var(--violet);transition:transform .22s ease;}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-item p{padding:0 20px 18px;margin:0;font-size:14.5px;color:var(--ink-2);}

/* footer */
.site-footer{margin-top:0;background:#f6f1ff;border-top:1px solid rgba(106,44,255,.16);color:var(--ink);}
.footer-inner{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;padding:34px 20px 24px;}
.footer-brand{max-width:340px;}
.footer-brand p{font-size:13.5px;color:var(--muted);margin-top:10px;}
.footer-title{font-size:13px;font-weight:800;color:var(--ink);margin-bottom:10px;letter-spacing:.06em;}
.footer-link-list{display:flex;flex-wrap:wrap;gap:8px 16px;max-width:560px;}
.footer-link-list a{font-size:13.5px;color:#4a4570;transition:color .18s ease;}
.footer-link-list a:hover{color:var(--violet);}
.footer-bottom{border-top:1px solid rgba(106,44,255,.14);padding:14px 20px 20px;}
.footer-bottom p{margin:0;font-size:13px;color:#575178;}

/* floating */
.fab-stack{position:fixed;right:18px;bottom:20px;z-index:95;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.fab{width:52px;height:52px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;}
.fab-main{background:linear-gradient(135deg,#6a2cff,#ff2d78);color:#fff;box-shadow:0 12px 26px rgba(106,44,255,.36);}
.fab-main:hover{transform:translateY(-3px) scale(1.04);}
.fab-top{background:#fff;color:var(--ink-2);border:1px solid rgba(21,19,42,.12);box-shadow:0 8px 20px rgba(21,19,42,.12);opacity:0;visibility:hidden;transform:translateY(8px);}
.fab-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.fab-top:hover{color:var(--violet);border-color:rgba(106,44,255,.4);}
.fab-panel{display:none;width:236px;background:#fff;border:1px solid rgba(21,19,42,.1);border-radius:16px;padding:16px;box-shadow:0 22px 46px rgba(21,19,42,.18);}
.fab-panel.open{display:block;animation:popIn .22s ease;}
@keyframes popIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.fab-panel h4{font-size:13.5px;font-weight:800;margin-bottom:10px;}
.fab-panel img{width:100%;max-width:180px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;border:1px solid rgba(21,19,42,.08);}
.fab-panel p{font-size:12.5px;color:var(--muted);margin:0 0 4px;}

/* reveal */
.has-reveal .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.has-reveal .reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .has-reveal .reveal{opacity:1;transform:none;}
}

@media (max-width:1080px){
  .nav-toggle{display:flex;}
  .nav{position:static;}
  .nav-cta{display:none;}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 34px rgba(21,19,42,.12);padding:8px 16px 16px;}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 10px;border-radius:10px;font-size:15px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-lead{max-width:none;}
  .review-layout{grid-template-columns:1fr;}
  .contact-layout{grid-template-columns:1fr;}
}
@media (max-width:760px){
  .sec{padding:48px 0;}
  .hero{padding:40px 0 34px;}
  .hero-side{grid-template-columns:1fr 1fr;gap:12px;}
  .stat-card{padding:16px 14px;}
  .stat-num{font-size:22px;}
  .form-grid{grid-template-columns:1fr;}
  .join-banner{padding:26px 22px;}
  .footer-inner{padding:28px 20px 20px;}
  .timeline li{padding:16px 18px 16px 66px;}
  .timeline li::before{left:16px;width:34px;height:34px;font-size:13px;}
  .panel{padding:20px;}
}
@media (max-width:420px){
  .hero-actions .btn{width:100%;}
  .fab{width:48px;height:48px;font-size:12px;}
}