:root{
  --ink:#101a3d;
  --ink-soft:#3a4569;
  --brand:#5b3ce8;
  --brand-2:#0ea5c9;
  --brand-3:#e8579c;
  --bg:#f6f5ff;
  --line:rgba(91,60,232,.14);
  --card:#ffffff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(91,60,232,.14), transparent 62%),
    radial-gradient(760px 460px at 96% 4%, rgba(14,165,201,.13), transparent 60%),
    radial-gradient(900px 620px at 60% 100%, rgba(232,87,156,.09), transparent 62%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}
section{scroll-margin-top:88px}

/* ============ NAV ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  width:100%;max-width:1200px;margin:0 auto;padding:12px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand .ai-page-logo{width:132px;height:auto}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{
  display:inline-block;padding:7px 11px;border-radius:8px;
  font-size:14px;color:var(--ink-soft);font-weight:500;
  transition:color .25s,background .25s,transform .25s;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:rgba(91,60,232,.08);transform:translateY(-1px)}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:999px;
  background:linear-gradient(120deg,#5b3ce8,#0ea5c9 55%,#e8579c);
  color:#fff!important;font-size:14px;font-weight:600;
  box-shadow:0 8px 20px -8px rgba(91,60,232,.65);
  transition:transform .25s,box-shadow .25s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(91,60,232,.8)}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.menu-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;
  padding:74px 0 66px;
  background:
    radial-gradient(720px 420px at 82% 8%, rgba(14,165,201,.22), transparent 60%),
    radial-gradient(680px 400px at 6% 92%, rgba(232,87,156,.16), transparent 62%),
    linear-gradient(155deg,#f1eeff 0%,#eef7ff 48%,#fdf1f8 100%);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(91,60,232,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(91,60,232,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.78);border:1px solid var(--line);
  font-size:13px;color:var(--brand);font-weight:600;
  box-shadow:0 6px 18px -12px rgba(91,60,232,.55);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:#12c2a0;box-shadow:0 0 0 4px rgba(18,194,160,.16);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero h1{
  margin:20px 0 16px;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.22;letter-spacing:-.5px;font-weight:800;
  color:var(--ink);
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#5b3ce8,#0ea5c9 52%,#e8579c);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16px;color:var(--ink-soft);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:12px;font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:transform .22s,box-shadow .22s,background .22s;
}
.btn-primary{
  color:#fff;background:linear-gradient(118deg,#5b3ce8,#0ea5c9 58%,#e8579c);
  box-shadow:0 14px 30px -14px rgba(91,60,232,.85);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(91,60,232,.95)}
.btn-ghost{
  color:var(--brand);background:rgba(255,255,255,.85);border-color:rgba(91,60,232,.28);
}
.btn-ghost:hover{transform:translateY(-2px);background:#fff;box-shadow:0 12px 26px -16px rgba(91,60,232,.6)}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.hero-tags span{
  font-size:12.5px;color:var(--ink-soft);padding:5px 12px;border-radius:8px;
  background:rgba(255,255,255,.75);border:1px solid var(--line);
}
.hero-panel{
  position:relative;border-radius:20px;padding:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.96),rgba(255,255,255,.78));
  border:1px solid rgba(91,60,232,.16);
  box-shadow:0 30px 60px -34px rgba(40,30,110,.55);
}
.hero-panel h2{font-size:15px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:8px}
.hero-panel h2::before{content:"";width:8px;height:8px;border-radius:2px;background:linear-gradient(120deg,#5b3ce8,#e8579c)}
.model-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.model-chips span{
  font-size:12.5px;padding:5px 10px;border-radius:7px;color:#22285a;
  background:rgba(91,60,232,.07);border:1px solid rgba(91,60,232,.12);
}
.hero-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
.hero-metrics div{
  padding:14px;border-radius:12px;background:#fff;border:1px solid var(--line);
}
.hero-metrics strong{display:block;font-size:22px;font-weight:800;color:var(--brand);letter-spacing:-.4px}
.hero-metrics small{font-size:12.5px;color:var(--ink-soft)}

/* ============ SECTION COMMON ============ */
.section{padding:70px 0}
.section-head{max-width:780px;margin-bottom:38px}
.section-head .label{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1.4px;
  color:var(--brand);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:800;letter-spacing:-.4px;color:var(--ink);
}
.section-head p{margin-top:12px;color:var(--ink-soft);font-size:15.5px}
.card{
  background:var(--card);border-radius:16px;border:1px solid var(--line);
  box-shadow:0 18px 40px -34px rgba(40,30,110,.5);
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 26px 48px -30px rgba(40,30,110,.55);border-color:rgba(91,60,232,.26)}

/* ============ METRICS ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.metric-card{padding:24px;border-radius:16px;background:#fff;border:1px solid var(--line);position:relative;overflow:hidden;transition:transform .28s,box-shadow .28s}
.metric-card::after{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,rgba(14,165,201,.2),transparent 70%)}
.metric-card:hover{transform:translateY(-4px);box-shadow:0 22px 42px -30px rgba(40,30,110,.55)}
.metric-card b{font-size:26px;display:block;font-weight:800;color:var(--brand);letter-spacing:-.5px}
.metric-card span{font-size:13.5px;color:var(--ink-soft)}

/* ============ ABOUT ============ */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.about-text p{color:var(--ink-soft);font-size:15.5px;margin-bottom:14px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.about-points li{
  list-style:none;padding:12px 14px;border-radius:10px;font-size:14px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
  display:flex;align-items:flex-start;gap:8px;
}
.about-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);margin-top:8px;flex:0 0 auto}
.about-side{display:grid;gap:14px}
.about-side .quote{
  padding:22px;border-radius:16px;
  background:linear-gradient(150deg,rgba(91,60,232,.9),rgba(14,165,201,.88) 60%,rgba(232,87,156,.85));
  color:#fff;box-shadow:0 24px 48px -30px rgba(91,60,232,.9);
}
.about-side .quote p{font-size:15px;line-height:1.8;color:#fff}
.about-side .quote small{display:block;margin-top:12px;color:rgba(255,255,255,.85);font-size:13px}
.about-side .mini{padding:18px 20px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.about-side .mini h3{font-size:15px;margin-bottom:8px;color:var(--ink)}
.about-side .mini p{font-size:13.5px;color:var(--ink-soft)}

/* ============ SERVICES ============ */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{padding:24px;border-radius:16px;background:#fff;border:1px solid var(--line);transition:transform .28s,box-shadow .28s}
.service-card:hover{transform:translateY(-5px);box-shadow:0 24px 44px -32px rgba(40,30,110,.6)}
.service-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(130deg,rgba(91,60,232,.14),rgba(14,165,201,.16));
  color:var(--brand);font-weight:800;font-size:16px;margin-bottom:14px;
}
.service-card h3{font-size:16.5px;margin-bottom:8px;color:var(--ink)}
.service-card p{font-size:14px;color:var(--ink-soft)}

/* ============ WORKFLOW ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step}
.step{
  padding:24px 20px;border-radius:16px;background:#fff;border:1px solid var(--line);position:relative;
  transition:transform .28s,box-shadow .28s;
}
.step:hover{transform:translateY(-4px);box-shadow:0 22px 42px -32px rgba(40,30,110,.55)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:26px;font-weight:800;letter-spacing:-1px;
  color:rgba(91,60,232,.22);display:block;margin-bottom:8px;
}
.step h3{font-size:15.5px;margin-bottom:6px;color:var(--ink)}
.step p{font-size:13.5px;color:var(--ink-soft)}

/* ============ INDUSTRY / NETWORK ============ */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.industry-item{
  padding:18px;border-radius:14px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--ink-soft);transition:transform .25s,border-color .25s,color .25s;
}
.industry-item:hover{transform:translateY(-3px);border-color:rgba(91,60,232,.35);color:var(--brand)}
.industry-item strong{display:block;color:var(--ink);font-size:15px;margin-bottom:4px;font-weight:700}

/* ============ CASES ============ */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-card{overflow:hidden;border-radius:16px;background:#fff;border:1px solid var(--line);transition:transform .28s,box-shadow .28s}
.case-card:hover{transform:translateY(-5px);box-shadow:0 26px 48px -32px rgba(40,30,110,.6)}
.case-media{width:100%;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,#eee9ff,#e6f6ff);display:flex;align-items:center;justify-content:center}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{padding:18px 20px}
.case-body h3{font-size:16px;margin-bottom:6px;color:var(--ink)}
.case-body p{font-size:13.5px;color:var(--ink-soft)}

/* ============ COMPARE ============ */
.compare-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
.score-card{
  padding:28px;border-radius:18px;background:linear-gradient(155deg,#231a5c,#3b2a8f 55%,#0e5f8a);
  color:#fff;box-shadow:0 30px 60px -34px rgba(35,26,92,.9);
}
.score-card .score{font-size:52px;font-weight:800;line-height:1;letter-spacing:-2px;color:#fff}
.score-card .score small{font-size:15px;font-weight:500;color:rgba(255,255,255,.7);margin-left:6px}
.stars{color:#ffd166;font-size:19px;letter-spacing:3px;margin:12px 0 8px}
.score-card p{font-size:14px;color:rgba(255,255,255,.82)}
.score-card .score-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.score-card .score-tags span{font-size:12.5px;padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.14);color:#fff}
.table-scroll{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff}
table{width:100%;border-collapse:collapse;min-width:620px;font-size:14px}
thead th{
  background:linear-gradient(120deg,rgba(91,60,232,.09),rgba(14,165,201,.09));
  color:var(--ink);font-weight:700;text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);
}
tbody td{padding:13px 16px;border-bottom:1px solid rgba(91,60,232,.08);color:var(--ink-soft);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(91,60,232,.035)}
td.strong{color:var(--ink);font-weight:600}

/* ============ TOKEN ============ */
.token-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.token-card{padding:22px;border-radius:16px;background:#fff;border:1px solid var(--line);transition:transform .28s,box-shadow .28s}
.token-card:hover{transform:translateY(-4px);box-shadow:0 22px 42px -32px rgba(40,30,110,.55)}
.token-card h3{font-size:15.5px;color:var(--ink);margin-bottom:4px}
.token-card .price{font-size:24px;font-weight:800;color:var(--brand);letter-spacing:-.5px;margin:8px 0 4px}
.token-card .price small{font-size:12.5px;color:var(--ink-soft);font-weight:500}
.token-card p{font-size:13.5px;color:var(--ink-soft)}

/* ============ REVIEWS ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{padding:24px;border-radius:16px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .28s,box-shadow .28s}
.review-card:hover{transform:translateY(-4px);box-shadow:0 24px 46px -32px rgba(40,30,110,.55)}
.review-card .stars{font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review-card p{font-size:14px;color:var(--ink-soft);flex:1}
.review-user{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed rgba(91,60,232,.16)}
.avatar{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;background:linear-gradient(130deg,#5b3ce8,#0ea5c9);flex:0 0 auto}
.review-user b{display:block;font-size:13.5px;color:var(--ink)}
.review-user span{font-size:12.5px;color:#7a829c}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border-radius:14px;background:#fff;border:1px solid var(--line);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item.open{border-color:rgba(91,60,232,.35);box-shadow:0 18px 36px -32px rgba(40,30,110,.6)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:18px 20px;font-size:15px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;font-family:inherit;
}
.faq-q .ico{width:22px;height:22px;border-radius:50%;background:rgba(91,60,232,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:15px;transition:transform .3s;flex:0 0 auto}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.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-soft)}

/* ============ ARTICLES ============ */
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.article-item{
  display:flex;align-items:flex-start;gap:14px;padding:20px;
  border-radius:14px;background:#fff;border:1px solid var(--line);
  transition:transform .25s,border-color .25s;
}
.article-item:hover{transform:translateY(-3px);border-color:rgba(91,60,232,.3)}
.article-item .tag{
  flex:0 0 auto;font-size:12px;font-weight:700;color:var(--brand);
  padding:4px 10px;border-radius:7px;background:rgba(91,60,232,.09);
}
.article-item h3{font-size:15px;color:var(--ink);margin-bottom:4px}
.article-item p{font-size:13.5px;color:var(--ink-soft)}

/* ============ FORM ============ */
.form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:start}
.contact-card{padding:26px;border-radius:16px;background:#fff;border:1px solid var(--line)}
.contact-card h3{font-size:17px;color:var(--ink);margin-bottom:14px}
.contact-line{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-soft);padding:8px 0}
.contact-line b{color:var(--ink);font-weight:600}
.qr-box{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(91,60,232,.18)}
.qr-box img{width:132px;border-radius:10px;border:1px solid var(--line)}
.qr-box span{display:block;font-size:12.5px;color:#7a829c;margin-top:8px}
form.demand-form{padding:26px;border-radius:16px;background:#fff;border:1px solid var(--line)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13px;color:var(--ink);font-weight:600}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:11px 14px;border-radius:10px;border:1px solid rgba(91,60,232,.2);
  background:#fbfaff;font-size:14px;color:var(--ink);font-family:inherit;
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(91,60,232,.11);
}
.form-field textarea{min-height:110px;resize:vertical}
.form-note{font-size:12.5px;color:#7a829c;margin-top:10px}
.form-msg{font-size:13.5px;color:#0f8a6a;margin-top:10px;display:none}
.form-msg.show{display:block}

/* ============ LINKS / FOOTER ============ */
.friend-links{
  padding:32px 0 10px;
}
.friend-links h3{font-size:15px;color:var(--ink);margin-bottom:14px}
.link-chips{display:flex;flex-wrap:wrap;gap:9px}
.link-chips a{
  font-size:13px;padding:6px 13px;border-radius:8px;color:var(--ink-soft);
  background:#fff;border:1px solid var(--line);transition:color .22s,border-color .22s,transform .22s;
}
.link-chips a:hover{color:var(--brand);border-color:rgba(91,60,232,.4);transform:translateY(-2px)}

.site-footer{
  background:linear-gradient(160deg,#1a1640,#241d5e 55%,#0d3d5c);
  color:#dfe2f5;margin-top:0;padding:46px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.site-footer h4{font-size:14.5px;color:#fff;margin-bottom:14px;font-weight:700}
.site-footer p{font-size:13.5px;color:#b9bede;line-height:1.9}
.site-footer ul{list-style:none;display:grid;gap:8px}
.site-footer ul a,.site-footer .flink{font-size:13.5px;color:#b9bede;transition:color .22s}
.site-footer ul a:hover,.site-footer .flink:hover{color:#8fd7ff}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand img{width:126px;background:#fff;border-radius:8px;padding:6px}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#9aa1c8;
}
.footer-bottom a{color:#9aa1c8}
.footer-bottom a:hover{color:#8fd7ff}

/* ============ FLOAT ============ */
.float-kefu{
  position:fixed;right:20px;bottom:88px;z-index:70;
  width:56px;height:56px;border-radius:50%;cursor:pointer;border:none;
  background:linear-gradient(135deg,#5b3ce8,#0ea5c9 60%,#e8579c);
  color:#fff;font-size:12px;font-weight:700;line-height:1.2;
  box-shadow:0 16px 34px -14px rgba(91,60,232,.9);
  display:flex;align-items:center;justify-content:center;text-align:center;
  transition:transform .25s;
}
.float-kefu:hover{transform:scale(1.07)}
.kefu-pop{
  position:fixed;right:86px;bottom:88px;z-index:71;
  width:190px;padding:14px;border-radius:14px;background:#fff;
  border:1px solid var(--line);box-shadow:0 24px 50px -26px rgba(30,20,90,.6);
  display:none;
}
.kefu-pop.show{display:block;animation:fadeUp .3s ease}
.kefu-pop img{width:100%;border-radius:8px}
.kefu-pop p{font-size:12.5px;color:var(--ink-soft);text-align:center;margin-top:8px}
.back-top{
  position:fixed;right:20px;bottom:22px;z-index:70;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--brand);cursor:pointer;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;
  box-shadow:0 12px 26px -18px rgba(30,20,90,.7);
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-3px)}

/* ============ ANIMATION ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .compare-wrap{grid-template-columns:1fr}
  .token-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px 16px 16px;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 20px 34px -26px rgba(30,20,90,.6);
  }
  .nav-links.open{display:flex;animation:fadeUp .28s ease}
  .nav-links a{padding:11px 12px;border-radius:8px}
  .menu-toggle{display:flex}
  .nav-cta{display:none}
  .hero{padding:48px 0 44px}
  .section{padding:52px 0}
  .service-grid,.case-grid,.review-grid,.token-grid,.steps,.industry-grid{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:1fr 1fr}
  .article-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .about-points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .float-kefu{bottom:80px;right:14px;width:50px;height:50px;font-size:11px}
  .kefu-pop{right:74px;bottom:80px;width:168px}
  .back-top{right:14px;bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}