*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#10203a;
  --ink-2:#3a4a63;
  --ink-3:#6b7a90;
  --brand:#4a5cf0;
  --brand-2:#8b4cf0;
  --brand-3:#22c3e6;
  --line:rgba(74,92,240,.14);
  --card:#ffffff;
  --soft:#f4f6ff;
  --radius:18px;
  --shadow:0 14px 40px rgba(35,52,120,.10);
  --shadow-sm:0 6px 18px rgba(35,52,120,.08);
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1100px 600px at 8% -8%, rgba(74,92,240,.14), transparent 60%),
    radial-gradient(900px 520px at 96% 2%, rgba(34,195,230,.14), transparent 58%),
    radial-gradient(1000px 700px at 50% 100%, rgba(139,76,240,.10), transparent 62%),
    linear-gradient(180deg,#fbfbff 0%,#f4f6ff 40%,#f7f5ff 100%);
  background-attachment:fixed;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section-head{max-width:760px;margin:0 auto 42px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;font-weight:600;
  color:var(--brand);background:rgba(74,92,240,.08);
  border:1px solid rgba(74,92,240,.16);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-3))}
h1,h2,h3,h4{line-height:1.35;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.2vw,36px);color:var(--ink)}
h3{font-size:18px;color:var(--ink)}
.section-head p{color:var(--ink-3);margin-top:12px;font-size:15.5px}
.grad-text{
  background:linear-gradient(100deg,#4a5cf0 0%,#8b4cf0 45%,#22c3e6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:12px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;
  will-change:transform;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(100deg,#4a5cf0,#8b4cf0 55%,#22c3e6);
  box-shadow:0 12px 26px rgba(74,92,240,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(74,92,240,.4)}
.btn-primary:active{transform:translateY(-1px) scale(.99)}
.btn-ghost{
  color:var(--brand);background:rgba(255,255,255,.85);
  border-color:rgba(74,92,240,.28);
}
.btn-ghost:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);background:#fff}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(74,92,240,.12);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:70px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{width:auto;max-height:38px;object-fit:contain}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;letter-spacing:.02em}
.brand-text span{font-size:11px;color:var(--ink-3);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:9px 12px;border-radius:9px;transition:color .2s,background .2s;
  position:relative;
}
.nav-links a:hover{color:var(--brand);background:rgba(74,92,240,.07)}
.nav-cta{flex-shrink:0;display:flex;align-items:center;gap:10px}
.nav-cta .btn{padding:10px 18px;font-size:14px}
.burger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 70px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 14% 10%,rgba(74,92,240,.16),transparent 65%),
    radial-gradient(560px 320px at 88% 22%,rgba(34,195,230,.16),transparent 65%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.12fr .88fr;
  gap:36px;align-items:center;
}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;letter-spacing:-.02em}
.hero-sub{margin-top:18px;font-size:16px;color:var(--ink-2);max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  font-size:12.5px;font-weight:600;color:#2b3b73;
  background:rgba(255,255,255,.9);
  border:1px solid rgba(74,92,240,.2);
  padding:6px 13px;border-radius:999px;
  transition:transform .25s,border-color .25s,color .25s;
}
.tag:hover{transform:translateY(-3px);border-color:rgba(74,92,240,.5);color:var(--brand)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin-top:16px;font-size:13px;color:var(--ink-3)}
.hero-panel{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.96),rgba(244,246,255,.92));
  border:1px solid rgba(74,92,240,.18);
  border-radius:24px;padding:26px;box-shadow:var(--shadow);
}
.hero-panel::after{
  content:"";position:absolute;inset:-1px;border-radius:25px;pointer-events:none;
  background:linear-gradient(130deg,rgba(74,92,240,.35),rgba(34,195,230,.28),rgba(139,76,240,.3));
  opacity:.0;transition:opacity .35s;
}
.hero-panel:hover::after{opacity:.16}
.panel-title{font-size:13px;letter-spacing:.16em;color:var(--ink-3);font-weight:700}
.panel-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.metric-cell{
  background:#fff;border:1px solid rgba(74,92,240,.12);border-radius:14px;
  padding:16px 16px;box-shadow:0 4px 14px rgba(35,52,120,.05);
  transition:transform .3s,box-shadow .3s;
}
.metric-cell:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.metric-cell b{display:block;font-size:24px;line-height:1.2;background:linear-gradient(100deg,#4a5cf0,#8b4cf0);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric-cell span{display:block;margin-top:6px;font-size:12.5px;color:var(--ink-3)}
.panel-foot{
  margin-top:16px;padding-top:16px;border-top:1px dashed rgba(74,92,240,.22);
  display:flex;flex-wrap:wrap;gap:8px;
}
.mini-chip{
  font-size:12px;color:#2b3b73;background:rgba(74,92,240,.07);
  border-radius:8px;padding:5px 10px;font-weight:600;
}

/* ---------- Stat band ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-top:54px;
}
.stat-item{
  background:rgba(255,255,255,.9);border:1px solid rgba(74,92,240,.14);
  border-radius:16px;padding:20px;text-align:center;box-shadow:0 6px 20px rgba(35,52,120,.06);
  transition:transform .3s,border-color .3s;
}
.stat-item:hover{transform:translateY(-5px);border-color:rgba(74,92,240,.36)}
.stat-item b{font-size:22px;color:var(--brand);display:block}
.stat-item span{font-size:13px;color:var(--ink-3)}

/* ---------- Generic cards ---------- */
.card{
  background:var(--card);border:1px solid rgba(74,92,240,.12);
  border-radius:var(--radius);padding:24px;box-shadow:0 6px 20px rgba(35,52,120,.05);
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(74,92,240,.3)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}

.icon-badge{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(74,92,240,.14),rgba(34,195,230,.16));
  color:var(--brand);margin-bottom:14px;font-weight:800;font-size:16px;
}
.card h3{margin-bottom:8px}
.card p{font-size:14px;color:var(--ink-3)}

/* ---------- About ---------- */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.about-copy p{color:var(--ink-2);font-size:15px;margin-bottom:14px}
.about-points{display:grid;gap:12px;margin-top:6px}
.about-point{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid rgba(74,92,240,.12);
  border-radius:13px;padding:14px 16px;box-shadow:0 4px 14px rgba(35,52,120,.04);
}
.about-point i{
  flex-shrink:0;width:24px;height:24px;border-radius:8px;font-style:normal;
  background:linear-gradient(135deg,#4a5cf0,#22c3e6);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;
}
.about-point div strong{display:block;font-size:14.5px}
.about-point div span{font-size:13px;color:var(--ink-3)}

/* ---------- Services ---------- */
.service-card{display:flex;flex-direction:column;gap:10px}
.service-card .scene{
  font-size:12.5px;color:var(--brand);font-weight:700;letter-spacing:.06em;
}
.platform-cloud{
  margin-top:30px;background:rgba(255,255,255,.86);
  border:1px solid rgba(74,92,240,.14);border-radius:var(--radius);padding:24px;
}
.platform-cloud h3{font-size:16px;margin-bottom:14px}
.cloud-list{display:flex;flex-wrap:wrap;gap:9px}
.cloud-list span{
  font-size:12.5px;font-weight:600;color:#334580;
  background:linear-gradient(135deg,rgba(74,92,240,.08),rgba(34,195,230,.09));
  border:1px solid rgba(74,92,240,.16);
  padding:6px 12px;border-radius:8px;transition:transform .25s,color .25s;
}
.cloud-list span:hover{transform:translateY(-3px);color:var(--brand)}

/* ---------- Flow ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative;
}
.flow-step{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:16px;
  padding:22px 20px;position:relative;transition:transform .3s,box-shadow .3s;
}
.flow-step:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.flow-step .num{
  font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--brand);
  background:rgba(74,92,240,.09);display:inline-block;padding:4px 10px;border-radius:8px;margin-bottom:12px;
}
.flow-step h3{font-size:16px;margin-bottom:6px}
.flow-step p{font-size:13.5px;color:var(--ink-3)}

/* ---------- Solutions ---------- */
.solution-card{position:relative;overflow:hidden}
.solution-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,#4a5cf0,#22c3e6);
  transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.solution-card:hover::before{transform:scaleX(1)}

/* ---------- Timeline / network ---------- */
.network-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:start}
.network-panel{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:var(--radius);
  padding:26px;box-shadow:0 6px 20px rgba(35,52,120,.05);
}
.timeline{position:relative;padding-left:24px}
.timeline::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,#4a5cf0,#22c3e6);
  border-radius:2px;opacity:.35;
}
.timeline-item{position:relative;padding-bottom:20px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-24px;top:6px;width:12px;height:12px;
  border-radius:50%;background:#fff;border:3px solid var(--brand);
}
.timeline-item strong{display:block;font-size:15px}
.timeline-item span{font-size:13.5px;color:var(--ink-3)}
.net-city{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.net-city span{
  font-size:13px;font-weight:600;color:#334580;
  border:1px dashed rgba(74,92,240,.3);border-radius:9px;padding:7px 13px;
  background:rgba(74,92,240,.04);
}

/* ---------- Case ---------- */
.case-media{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;
}
.case-figure{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:16px;
  overflow:hidden;box-shadow:0 6px 20px rgba(35,52,120,.05);
  transition:transform .3s,box-shadow .3s;
}
.case-figure:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.case-figure .cap{padding:14px 16px;font-size:13.5px;color:var(--ink-2);font-weight:600}
.case-side{display:flex;flex-direction:column;gap:18px}

/* ---------- Compare table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid rgba(74,92,240,.16);border-radius:var(--radius);
  background:#fff;box-shadow:0 6px 20px rgba(35,52,120,.05);
}
table{width:100%;border-collapse:collapse;min-width:660px}
th,td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid rgba(74,92,240,.1)}
th{background:linear-gradient(100deg,rgba(74,92,240,.09),rgba(34,195,230,.09));font-weight:800;color:#22336b;white-space:nowrap}
tbody tr:hover{background:rgba(74,92,240,.035)}
td:first-child{font-weight:700;color:var(--ink)}
td.highlight{color:var(--brand);font-weight:800}
.rating-box{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:26px;
}
.rating-item{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:16px;
  padding:20px;text-align:center;box-shadow:0 6px 20px rgba(35,52,120,.05);
}
.rating-item b{font-size:26px;display:block;background:linear-gradient(100deg,#4a5cf0,#8b4cf0);-webkit-background-clip:text;background-clip:text;color:transparent}
.rating-item span{font-size:13px;color:var(--ink-3)}
.stars{color:#f5a623;letter-spacing:2px;font-size:16px}

/* ---------- Token price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.price-card{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:var(--radius);
  padding:24px;box-shadow:0 6px 20px rgba(35,52,120,.05);transition:transform .3s,box-shadow .3s;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.price-card .tier{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--brand);margin-bottom:8px}
.price-card .num{font-size:26px;font-weight:800;color:var(--ink)}
.price-card .num small{font-size:13px;font-weight:600;color:var(--ink-3)}
.price-card ul{margin-top:14px;display:grid;gap:8px}
.price-card li{font-size:13.5px;color:var(--ink-2);display:flex;gap:8px}
.price-card li::before{content:"✓";color:var(--brand);font-weight:800}

/* ---------- Reviews ---------- */
.review-card{display:flex;flex-direction:column;gap:12px}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,#4a5cf0,#22c3e6);
}
.review-top strong{display:block;font-size:14.5px}
.review-top span{font-size:12.5px;color:var(--ink-3)}
.review-card p{font-size:13.8px;color:var(--ink-2);flex:1}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:14px;
  overflow:hidden;transition:border-color .3s,box-shadow .3s;
}
.faq-item.open{border-color:rgba(74,92,240,.4);box-shadow:0 10px 26px rgba(35,52,120,.09)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:15px;font-weight:700;color:var(--ink);font-family:inherit;
}
.faq-q .arrow{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(74,92,240,.3);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .3s,background .3s,color .3s;
}
.faq-item.open .arrow{transform:rotate(45deg);background:var(--brand);color:#fff;border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--ink-3)}

/* ---------- Form ---------- */
.form-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:start;
}
.contact-card{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:var(--radius);
  padding:26px;box-shadow:0 6px 20px rgba(35,52,120,.05);
}
.contact-list{display:grid;gap:14px;margin-top:16px}
.contact-row{display:flex;gap:12px;align-items:flex-start;font-size:14px}
.contact-row i{
  flex-shrink:0;font-style:normal;width:30px;height:30px;border-radius:9px;
  background:rgba(74,92,240,.09);color:var(--brand);font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.contact-row div strong{display:block;font-size:13.5px}
.contact-row div span{font-size:13px;color:var(--ink-3);word-break:break-all}
.qr-box{margin-top:18px;display:flex;gap:14px;align-items:center;background:var(--soft);border-radius:13px;padding:14px}
.qr-box img{width:84px;height:84px;object-fit:contain;border-radius:8px;background:#fff;padding:4px}
.qr-box div strong{display:block;font-size:13.5px}
.qr-box div span{font-size:12.5px;color:var(--ink-3)}
form{background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:var(--radius);padding:26px;box-shadow:0 6px 20px rgba(35,52,120,.05)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:11px;border:1px solid rgba(74,92,240,.2);
  font-size:14px;font-family:inherit;color:var(--ink);background:#fbfbff;
  transition:border-color .25s,box-shadow .25s,background .25s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(74,92,240,.12);
}
.field textarea{min-height:110px;resize:vertical}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form .btn{width:100%;margin-top:6px}

/* ---------- Articles & links ---------- */
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.article-item{
  background:#fff;border:1px solid rgba(74,92,240,.14);border-radius:14px;
  padding:18px;transition:transform .3s,box-shadow .3s,border-color .3s;
  display:flex;flex-direction:column;gap:8px;
}
.article-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:rgba(74,92,240,.32)}
.article-item strong{font-size:14.5px}
.article-item span{font-size:12.5px;color:var(--ink-3)}
.article-item em{font-style:normal;font-size:13px;color:var(--brand);font-weight:700}
.friend-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:16px}
.friend-links a{
  font-size:13px;font-weight:600;color:#334580;background:#fff;
  border:1px solid rgba(74,92,240,.18);border-radius:9px;padding:7px 14px;
  transition:transform .25s,color .25s,border-color .25s;
}
.friend-links a:hover{transform:translateY(-3px);color:var(--brand);border-color:rgba(74,92,240,.45)}

/* ---------- Partner strip ---------- */
.partner-strip{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  background:rgba(255,255,255,.8);border:1px solid rgba(74,92,240,.14);
  border-radius:16px;padding:20px;
}
.partner-strip span{
  font-size:12.5px;font-weight:600;color:#3b4c85;
  background:linear-gradient(135deg,rgba(74,92,240,.07),rgba(34,195,230,.08));
  border-radius:8px;padding:6px 12px;
}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:56px;background:linear-gradient(180deg,#101a30,#0c1424);
  color:#cfd8ea;padding:44px 0 20px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand .ai-page-logo{max-height:34px;width:auto;object-fit:contain;filter:brightness(1.35)}
.footer-brand strong{color:#fff;font-size:16px}
.site-footer p,.site-footer li,.site-footer a{font-size:13.5px;color:#b6c2d8}
.site-footer h4{color:#fff;font-size:14.5px;margin-bottom:12px;letter-spacing:.03em}
.site-footer ul{display:grid;gap:8px}
.site-footer a:hover{color:#fff}
.footer-bottom{
  margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#94a3bd;
}
.footer-bottom a{color:#c8d3e8}
.footer-bottom a:hover{color:#fff}

/* ---------- Floating ---------- */
.float-stack{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;font-weight:800;
  background:linear-gradient(135deg,#4a5cf0,#8b4cf0);
  box-shadow:0 10px 24px rgba(74,92,240,.38);
  transition:transform .25s,box-shadow .25s;
}
.float-btn:hover{transform:translateY(-4px) scale(1.04)}
.float-btn.ghost{background:linear-gradient(135deg,#22c3e6,#4a5cf0)}
.float-kefu{
  position:fixed;right:18px;bottom:132px;z-index:91;width:212px;
  background:#fff;border:1px solid rgba(74,92,240,.2);border-radius:14px;
  box-shadow:var(--shadow);padding:14px;display:none;
}
.float-kefu.show{display:block;animation:pop .25s ease}
.float-kefu strong{display:block;font-size:13.5px;margin-bottom:8px;color:var(--ink)}
.float-kefu img{width:100%;border-radius:9px}
.float-kefu span{display:block;margin-top:8px;font-size:12px;color:var(--ink-3);text-align:center}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr}
  .about-wrap,.network-wrap,.form-wrap{grid-template-columns:1fr}
  .grid-3,.grid-4,.flow,.price-grid,.article-list{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{
    display:none;position:absolute;top:70px;left:0;right:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(74,92,240,.16);
    flex-direction:column;align-items:stretch;padding:12px 20px 18px;gap:0;
    box-shadow:0 18px 34px rgba(35,52,120,.12);
  }
  .nav-links.show{display:flex}
  .nav-links a{padding:12px 10px;border-radius:9px;font-size:14.5px}
  .burger{display:flex}
  .nav-cta .btn-primary{display:none}
  .case-media{grid-template-columns:1fr}
}
@media (max-width:640px){
  .section{padding:52px 0}
  .grid-3,.grid-4,.flow,.price-grid,.article-list,.rating-box,.form-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:42px 0 52px}
  .hero-actions .btn{width:100%}
  .panel-metrics{grid-template-columns:1fr}
  .brand-text span{display:none}
  .float-kefu{width:190px;right:14px}
}