:root{
  --ink:#0f1b2d;
  --ink-2:#334155;
  --muted:#64748b;
  --brand:#1f5eff;
  --brand-2:#00c2ff;
  --accent:#ff6a3d;
  --bg:#f4f7fe;
  --bg-2:#eaf1ff;
  --card:#ffffff;
  --line:#e2eaf8;
  --radius:18px;
  --shadow:0 12px 34px rgba(21,58,129,.10);
  --shadow-hover:0 20px 46px rgba(21,58,129,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
section{position:relative}
.sec-pad{padding:74px 0}
.sec-head{text-align:center;max-width:780px;margin:0 auto 46px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:2px;
  font-weight:700;
  color:var(--brand);
  background:rgba(31,94,255,.09);
  padding:6px 16px;
  border-radius:100px;
  margin-bottom:16px;
}
.sec-head h2{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.5px;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15px}
.grad-text{
  color:var(--brand);
  background:linear-gradient(100deg,#1f5eff,#00a6ff 60%,#00d6c2);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:100px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(100deg,#1f5eff,#00b0ff);
  color:#fff;box-shadow:0 10px 24px rgba(31,94,255,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(31,94,255,.42)}
.btn-ghost{
  background:#fff;color:var(--ink);border-color:var(--line);
  box-shadow:0 6px 16px rgba(21,58,129,.06);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--brand);color:var(--brand)}
.btn-line{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.45);
}
.btn-line:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  min-height:68px;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{width:128px;max-width:100%;height:auto}
.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:8px 12px;border-radius:8px;transition:.2s;position:relative;
}
.nav-links a:hover{color:var(--brand);background:rgba(31,94,255,.06)}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.burger{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.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)}
.mobile-menu{
  display:none;flex-direction:column;gap:2px;
  padding:10px 20px 18px;background:#fff;border-bottom:1px solid var(--line);
}
.mobile-menu a{padding:12px 8px;font-size:15px;font-weight:600;color:var(--ink-2);border-radius:8px}
.mobile-menu a:hover{background:var(--bg-2);color:var(--brand)}
.mobile-menu.show{display:flex}

/* ===== Hero ===== */
.hero{
  position:relative;
  background:
    radial-gradient(circle at 12% 18%,rgba(0,180,255,.28),transparent 45%),
    radial-gradient(circle at 88% 12%,rgba(31,94,255,.30),transparent 46%),
    linear-gradient(140deg,#0a1730 0%,#123a86 48%,#0c2a63 100%);
  color:#fff;overflow:hidden;
  padding:80px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 40%,#000 35%,transparent 80%);
}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:#bfe0ff;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  padding:7px 16px;border-radius:100px;margin-bottom:24px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#25e6a4;box-shadow:0 0 0 4px rgba(37,230,164,.2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{
  font-size:clamp(28px,5.2vw,52px);
  line-height:1.22;font-weight:900;letter-spacing:-1px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#7ec8ff,#4ee0ff 55%,#7ef4cf);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{
  margin-top:20px;font-size:clamp(14px,2vw,17px);color:#c3d5f0;max-width:720px;margin-left:auto;margin-right:auto;
}
.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:52px;
  position:relative;z-index:2;
}
.stat-card{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:16px;padding:20px 12px;text-align:center;
  backdrop-filter:blur(6px);transition:.3s;
}
.stat-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.14)}
.stat-card strong{display:block;font-size:clamp(20px,2.6vw,28px);font-weight:800;color:#fff}
.stat-card span{font-size:13px;color:#b9cdea}

/* ===== Section base ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* about / platform intro */
.intro-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:start;
}
.intro-text h2{font-size:clamp(22px,3vw,30px);font-weight:800;line-height:1.35;margin-bottom:18px}
.intro-text p{color:var(--ink-2);font-size:15px;margin-bottom:14px}
.intro-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.intro-list li{
  display:flex;align-items:flex-start;gap:9px;font-size:14px;font-weight:600;color:var(--ink);
  background:#fff;border:1px solid var(--line);padding:12px 14px;border-radius:12px;
  transition:.25s;
}
.intro-list li:hover{border-color:var(--brand);transform:translateX(4px);box-shadow:var(--shadow)}
.intro-list li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);flex-shrink:0;margin-top:8px}
.intro-visual{
  background:linear-gradient(160deg,#eaf2ff,#f7fbff);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.intro-visual h3{font-size:17px;font-weight:800;margin-bottom:6px}
.intro-visual .sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.flow-item{
  display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px dashed #d7e3f7;
}
.flow-item:last-child{border-bottom:none}
.flow-num{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;
  background:linear-gradient(135deg,#1f5eff,#00c2ff);
}
.flow-item b{display:block;font-size:14px;color:var(--ink)}
.flow-item small{color:var(--muted);font-size:12.5px}

/* services */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;gap:12px;
}
.svc-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:#c9dbff}
.svc-icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(31,94,255,.14),rgba(0,194,255,.16));
  color:var(--brand);font-weight:800;font-size:17px;
}
.svc-card h3{font-size:16.5px;font-weight:800}
.svc-card p{font-size:13.5px;color:var(--muted);line-height:1.7}

/* one-stop scenes tags */
.scene-wrap{background:linear-gradient(180deg,#ffffff,#eef4ff);border-radius:26px;padding:44px 32px;border:1px solid var(--line);box-shadow:var(--shadow)}
.scene-tags{display:flex;flex-wrap:wrap;gap:11px;justify-content:center;margin-top:26px}
.scene-tag{
  font-size:13.5px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);padding:9px 16px;border-radius:100px;transition:.25s;
  box-shadow:0 3px 10px rgba(21,58,129,.05);cursor:default;
}
.scene-tag:hover{color:#fff;background:linear-gradient(100deg,#1f5eff,#00b0ff);border-color:transparent;transform:translateY(-3px)}

/* industry solutions */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.sol-card{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:22px;box-shadow:var(--shadow);transition:.3s;
}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.sol-mark{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,#1f5eff,#00c2ff);color:#fff;font-weight:800;font-size:16px;
}
.sol-card h3{font-size:16px;font-weight:800;margin-bottom:5px}
.sol-card p{font-size:13.5px;color:var(--muted)}

/* service network */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.net-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 20px;text-align:center;
  transition:.3s;box-shadow:var(--shadow);
}
.net-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#c9dbff}
.net-card b{display:block;font-size:16px;margin-bottom:8px}
.net-card span{font-size:13px;color:var(--muted)}

/* process timeline */
.time-line{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.time-line::before{
  content:"";position:absolute;top:26px;left:8%;right:8%;height:2px;
  background:linear-gradient(90deg,#1f5eff,#00c2ff,#7ef4cf);opacity:.35;
}
.step{position:relative;text-align:center;padding-top:0}
.step-dot{
  width:52px;height:52px;border-radius:50%;margin:0 auto 16px;display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#fff;background:linear-gradient(135deg,#1f5eff,#00c2ff);
  box-shadow:0 8px 20px rgba(31,94,255,.3);position:relative;z-index:2;
}
.step b{display:block;font-size:14.5px;margin-bottom:5px}
.step span{font-size:12.5px;color:var(--muted)}

/* cases */
.case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
.case-media{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow);transition:.3s;
}
.case-media:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.case-media img{width:100%;height:auto;object-fit:contain;background:#eef3fc}
.case-media .cap{padding:16px 18px}
.case-media .cap b{font-size:15px;display:block;margin-bottom:4px}
.case-media .cap p{font-size:13px;color:var(--muted)}
.case-side{display:grid;grid-template-rows:auto auto;gap:22px}
.case-side .case-media img{aspect-ratio:1/1;object-fit:contain}

/* compare table */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.score-banner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:26px 30px;background:linear-gradient(110deg,#0d2a63,#1f5eff 70%,#00b0ff);
  color:#fff;
}
.score-banner .left b{display:block;font-size:19px;font-weight:800}
.score-banner .left span{font-size:13px;color:#cfe1ff}
.score-num{display:flex;align-items:baseline;gap:8px}
.score-num strong{font-size:46px;line-height:1;font-weight:900}
.score-num small{font-size:15px;color:#dbe9ff}
.stars{letter-spacing:2px;font-size:16px;color:#ffd75e;margin-top:4px}
.table-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
table.compare thead th{background:#f5f8ff;font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.5px}
table.compare tbody tr:hover{background:#f9fbff}
table.compare td:first-child{font-weight:700;color:var(--ink)}
table.compare td .yes{color:#0aa06e;font-weight:800}
table.compare td .mid{color:var(--muted)}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;gap:14px;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.review-text{font-size:14px;color:var(--ink-2);line-height:1.8}
.review-user{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  font-weight:800;color:#fff;font-size:15px;
  background:linear-gradient(135deg,#1f5eff,#00c2ff);
}
.review-user b{display:block;font-size:14px}
.review-user span{font-size:12px;color:var(--muted)}

/* token price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);transition:.3s;position:relative;overflow:hidden;
}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.price-card.hot{border-color:#b9d2ff;background:linear-gradient(180deg,#f6faff,#fff)}
.price-card .p-tag{
  position:absolute;top:14px;right:14px;font-size:11px;font-weight:800;color:#fff;
  background:var(--accent);padding:3px 10px;border-radius:100px;letter-spacing:.5px;
}
.price-card h3{font-size:16px;font-weight:800;margin-bottom:8px}
.price-card .price{font-size:28px;font-weight:900;color:var(--brand);line-height:1.2}
.price-card .price small{font-size:13px;font-weight:600;color:var(--muted)}
.price-card ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.price-card li{font-size:13.5px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start}
.price-card li::before{content:"✓";color:#0aa06e;font-weight:800;flex-shrink:0}

/* form */
.form-shell{
  display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:start;
}
.form-side{
  background:linear-gradient(160deg,#0f2c62,#1f5eff 130%);
  color:#fff;border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow);
}
.form-side h2{font-size:23px;font-weight:800;margin-bottom:14px}
.form-side p{font-size:14px;color:#c8dbff;margin-bottom:22px}
.contact-item{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:13.5px}
.contact-item:last-child{border-bottom:none}
.contact-item b{min-width:64px;color:#9fc4ff;font-weight:700;flex-shrink:0}
.contact-item span{color:#eaf2ff;word-break:break-all}
.qr-mini{margin-top:18px;background:#fff;border-radius:12px;padding:10px;display:inline-block}
.qr-mini img{width:110px;height:110px;object-fit:contain}
.qr-mini small{display:block;text-align:center;font-size:11.5px;color:var(--ink-2);margin-top:6px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;box-shadow:var(--shadow);
}
.form-card h2{font-size:21px;font-weight:800;margin-bottom:6px}
.form-card .hint{font-size:13px;color:var(--muted);margin-bottom:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:700;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;
  font-size:14px;font-family:inherit;color:var(--ink);background:#fbfcff;transition:.2s;
  outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,94,255,.12);
}
.field textarea{resize:vertical;min-height:104px}
.form-card .btn{margin-top:20px;width:100%}

/* faq */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:.25s;box-shadow:0 6px 18px rgba(21,58,129,.05);
}
.faq-item:hover{border-color:#c9dbff}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 22px;cursor:pointer;font-weight:700;font-size:14.5px;
}
.faq-q .ico{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;
  background:rgba(31,94,255,.1);color:var(--brand);font-weight:800;font-size:15px;transition:.3s;
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.8}

/* articles */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.art-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;gap:10px;
}
.art-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#c9dbff}
.art-card .tag{font-size:12px;font-weight:700;color:var(--brand);background:rgba(31,94,255,.08);padding:4px 11px;border-radius:100px;align-self:flex-start}
.art-card h3{font-size:15.5px;font-weight:800;line-height:1.5}
.art-card p{font-size:13px;color:var(--muted)}
.art-card a.link{font-size:13.5px;font-weight:700;color:var(--brand);margin-top:auto;transition:.2s}
.art-card a.link:hover{color:var(--accent)}

/* promo images */
.promo-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
.promo-item{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow);transition:.3s;
}
.promo-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.promo-item img{width:100%;height:auto;object-fit:contain;aspect-ratio:16/10;background:#eef3fc}

/* footer links area */
.friend-area{
  background:#f7faff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:32px 0;
}
.friend-area h3{font-size:14px;font-weight:800;color:var(--ink-2);margin-bottom:14px}
.friend-links{display:flex;flex-wrap:wrap;gap:10px}
.friend-links a{
  font-size:13px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);padding:7px 15px;border-radius:100px;transition:.25s;
}
.friend-links a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}

/* footer */
.site-footer{background:#0a1730;color:#c3d5f0;padding:52px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:34px;padding-bottom:38px;
}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.5px}
.footer-col p{font-size:13px;color:#9fb6d6;line-height:1.8}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13px;color:#9fb6d6;transition:.2s}
.footer-col ul a:hover{color:#4ee0ff}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand img{width:130px;height:auto;filter:brightness(0) invert(1);opacity:.92}
.footer-qr{background:#fff;border-radius:12px;padding:8px;display:inline-block;margin-top:6px}
.footer-qr img{width:96px;height:96px;object-fit:contain}
.footer-qr small{display:block;text-align:center;font-size:11px;color:#334155;margin-top:4px}
.copyright{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  font-size:12.5px;color:#8298b8;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
}
.copyright a{color:#8298b8;transition:.2s}
.copyright a:hover{color:#4ee0ff}

/* float widgets */
.float-bar{
  position:fixed;right:18px;bottom:96px;z-index:120;display:flex;flex-direction:column;gap:10px;
}
.float-btn{
  width:50px;height:50px;border-radius:14px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;box-shadow:0 10px 24px rgba(21,58,129,.16);
  transition:.25s;color:var(--brand);font-size:18px;font-weight:800;
}
.float-btn:hover{transform:translateY(-4px);background:var(--brand);color:#fff;border-color:var(--brand)}
.back-top{opacity:0;pointer-events:none}
.back-top.show{opacity:1;pointer-events:auto}
.kefu-pop{
  position:fixed;right:18px;bottom:96px;z-index:130;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:14px;box-shadow:0 18px 44px rgba(21,58,129,.22);
  display:none;text-align:center;width:190px;
}
.kefu-pop.show{display:block;animation:fadeUp .25s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.kefu-pop img{width:150px;height:150px;object-fit:contain;margin:0 auto;border-radius:8px}
.kefu-pop p{font-size:12px;color:var(--muted);margin-top:8px}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta .btn-ghost{display:none}
  .burger{display:flex}
  .intro-grid,.case-grid,.form-shell{grid-template-columns:1fr}
  .svc-grid,.review-grid,.price-grid,.art-grid{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:repeat(2,1fr)}
  .time-line{grid-template-columns:repeat(2,1fr)}
  .time-line::before{display:none}
  .promo-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:680px){
  .sec-pad{padding:52px 0}
  .hero{padding:60px 0 68px}
  .hero-stats{grid-template-columns:1fr 1fr}
  .svc-grid,.review-grid,.price-grid,.art-grid,.sol-grid,.net-grid,.form-grid,.promo-grid,.intro-list{grid-template-columns:1fr}
  .time-line{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .score-banner{padding:22px}
  .score-num strong{font-size:38px}
  .nav-cta .btn{padding:9px 16px;font-size:13px}
  .float-bar{bottom:80px;right:12px}
  .float-btn{width:46px;height:46px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}