*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#171b2e;
  --ink-soft:#4a5169;
  --paper:#fdfaf4;
  --paper-2:#f5f0e6;
  --coral:#ff5c45;
  --coral-deep:#e8422c;
  --teal:#0f9d8a;
  --teal-deep:#0a7a6b;
  --blue:#2a4bd7;
  --sun:#ffb703;
  --line:#e8e1d3;
  --card:#ffffff;
  --shadow:0 14px 40px rgba(23,27,46,.09);
  --shadow-sm:0 6px 18px rgba(23,27,46,.07);
  --radius:20px;
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.3;letter-spacing:-.01em}
section{scroll-margin-top:88px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(253,250,244,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  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 img{width:38px;height:38px;object-fit:contain;border-radius:10px;background:#fff;padding:3px;border:1px solid var(--line)}
.brand-text{font-weight:800;font-size:18px;letter-spacing:.02em}
.brand-text span{color:var(--coral)}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  display:block;padding:8px 11px;font-size:14px;font-weight:600;
  color:var(--ink-soft);border-radius:10px;position:relative;transition:color .2s,background .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;
  background:var(--coral);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav-links a:hover{color:var(--ink);background:rgba(255,92,69,.07)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{
  flex-shrink:0;display:inline-flex;align-items:center;gap:6px;
  background:var(--coral);color:#fff;font-weight:700;font-size:14px;
  padding:10px 18px;border-radius:999px;
  box-shadow:0 8px 20px rgba(255,92,69,.32);
  transition:transform .2s,box-shadow .2s,background .2s;
}
.nav-cta:hover{transform:translateY(-2px);background:var(--coral-deep);box-shadow:0 12px 26px rgba(232,66,44,.4)}
.menu-toggle{
  display:none;background:#fff;border:1px solid var(--line);border-radius:10px;
  width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 82% -8%,rgba(255,183,3,.20),transparent 62%),
    radial-gradient(760px 460px at 6% 8%,rgba(255,92,69,.16),transparent 60%),
    radial-gradient(820px 520px at 50% 118%,rgba(15,157,138,.16),transparent 62%),
    linear-gradient(180deg,#fdfaf4 0%,#f8f1e3 100%);
  padding:64px 0 78px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(23,27,46,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(23,27,46,.045) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:start}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
  font-size:13px;font-weight:700;padding:7px 15px;border-radius:999px;
  box-shadow:var(--shadow-sm);margin-bottom:20px;
}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--teal);display:inline-block;animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(15,157,138,.5)}70%{box-shadow:0 0 0 9px rgba(15,157,138,0)}}
.hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:900;letter-spacing:-.02em}
.hero h1 em{
  font-style:normal;position:relative;color:var(--coral);display:inline-block;
}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:rgba(255,183,3,.42);border-radius:6px;z-index:-1;
}
.hero-lead{margin-top:20px;font-size:16.5px;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;
  font-weight:800;font-size:15px;padding:14px 26px;border-radius:999px;
  border:2px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
  font-family:inherit;
}
.btn-main{background:var(--coral);color:#fff;box-shadow:0 12px 28px rgba(255,92,69,.34)}
.btn-main:hover{transform:translateY(-3px);background:var(--coral-deep);box-shadow:0 16px 34px rgba(232,66,44,.42)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{transform:translateY(-3px);background:var(--ink);color:#fff;box-shadow:0 14px 28px rgba(23,27,46,.22)}
.btn-teal{background:var(--teal);color:#fff;box-shadow:0 12px 26px rgba(15,157,138,.3)}
.btn-teal:hover{transform:translateY(-3px);background:var(--teal-deep)}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.hero-tags span{
  font-size:12.5px;font-weight:700;color:var(--ink-soft);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;
}
.hero-side{display:grid;gap:14px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;gap:15px;
  transition:transform .25s,box-shadow .25s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.stat-ico{
  width:46px;height:46px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:15px;color:#fff;
}
.ico-coral{background:linear-gradient(135deg,#ff7a5c,#ff4b2c)}
.ico-teal{background:linear-gradient(135deg,#2bbfa6,#0a7a6b)}
.ico-sun{background:linear-gradient(135deg,#ffc933,#f59e0b);color:#3a2800}
.ico-blue{background:linear-gradient(135deg,#5570f0,#2a4bd7)}
.stat-card b{display:block;font-size:16px;font-weight:800}
.stat-card p{font-size:13px;color:var(--ink-soft);line-height:1.55}
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.fade-up.in{opacity:1;transform:none}

/* ---------- generic section ---------- */
.sec{padding:76px 0}
.sec-alt{background:linear-gradient(180deg,#f8f1e3 0%,#fdfaf4 100%)}
.sec-head{max-width:740px;margin-bottom:42px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-kicker{
  display:inline-block;font-size:12.5px;font-weight:900;letter-spacing:.14em;
  text-transform:uppercase;color:var(--coral);margin-bottom:12px;
  padding:5px 12px;border-radius:6px;background:rgba(255,92,69,.1);
}
.sec-head h2{font-size:clamp(24px,3.1vw,36px);font-weight:900}
.sec-head p{margin-top:14px;color:var(--ink-soft);font-size:15.5px}

/* ---------- about / platform ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.about-main{
  background:#fff;border:2px solid var(--ink);border-radius:26px;
  padding:32px;box-shadow:8px 8px 0 rgba(23,27,46,.08);
}
.about-main h3{font-size:21px;margin-bottom:14px}
.about-main p{color:var(--ink-soft);font-size:15px}
.about-list{display:grid;gap:12px;margin-top:22px}
.about-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:14.5px;font-weight:600;
  background:var(--paper-2);border-radius:14px;padding:13px 16px;border-left:4px solid var(--teal);
}
.about-list li b{color:var(--coral)}
.about-side{display:grid;gap:18px}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.mini-card h4{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--sun);display:inline-block;flex-shrink:0}
.mini-card p{font-size:14px;color:var(--ink-soft)}

/* ---------- service cards ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;position:relative;overflow:hidden;
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.svc-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--coral),var(--sun));
  transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(255,92,69,.4)}
.svc-card:hover::before{transform:scaleX(1)}
.svc-card h3{font-size:17px;margin-bottom:9px}
.svc-card p{font-size:14px;color:var(--ink-soft)}
.svc-num{
  font-size:12px;font-weight:900;color:var(--coral);letter-spacing:.1em;margin-bottom:12px;display:block;
}
.svc-card:nth-child(3n+2) .svc-num{color:var(--teal)}
.svc-card:nth-child(3n) .svc-num{color:var(--blue)}

/* ---------- scenario chips ---------- */
.chip-cloud{display:flex;flex-wrap:wrap;gap:11px}
.chip{
  background:#fff;border:1.5px solid var(--line);border-radius:999px;
  padding:9px 18px;font-size:13.5px;font-weight:700;color:var(--ink-soft);
  transition:all .22s;cursor:default;
}
.chip:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-2px)}
.chip.hot{background:rgba(255,92,69,.1);border-color:rgba(255,92,69,.35);color:var(--coral-deep)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.flow-step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 20px;position:relative;transition:transform .25s,box-shadow .25s;
}
.flow-step:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.flow-step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:12px;font-weight:900;letter-spacing:.1em;color:var(--teal);
  display:block;margin-bottom:12px;
}
.flow-step h3{font-size:16px;margin-bottom:8px}
.flow-step p{font-size:13.5px;color:var(--ink-soft)}

/* ---------- network ---------- */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;
  text-align:center;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.net-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:var(--teal)}
.net-item b{display:block;font-size:15px;margin-bottom:6px}
.net-item span{font-size:13px;color:var(--ink-soft)}

/* ---------- compare ---------- */
.compare-wrap{display:grid;grid-template-columns:.78fr 1.22fr;gap:24px;align-items:start}
.score-card{
  background:linear-gradient(160deg,#171b2e,#2b3152);color:#fff;
  border-radius:26px;padding:32px;position:relative;overflow:hidden;
  box-shadow:0 20px 46px rgba(23,27,46,.3);
}
.score-card::after{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,183,3,.36),transparent 70%);
  top:-70px;right:-70px;
}
.score-label{font-size:13px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--sun)}
.score-num{font-size:66px;font-weight:900;line-height:1;margin:14px 0 6px;letter-spacing:-.03em}
.score-num small{font-size:20px;font-weight:700;color:rgba(255,255,255,.62);margin-left:4px}
.stars{color:var(--sun);font-size:20px;letter-spacing:4px;margin-bottom:14px}
.score-card p{font-size:14px;color:rgba(255,255,255,.82);position:relative;z-index:2}
.score-metas{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;position:relative;z-index:2}
.score-metas span{
  font-size:12.5px;font-weight:700;padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
}
.table-scroll{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:560px}
thead th{
  background:var(--paper-2);font-size:13.5px;font-weight:900;color:var(--ink);
  text-align:left;padding:15px 18px;border-bottom:2px solid var(--line);white-space:nowrap;
}
tbody td{padding:14px 18px;font-size:14px;color:var(--ink-soft);border-bottom:1px solid var(--line);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr{transition:background .2s}
tbody tr:hover{background:#fffaf0}
td.good{color:var(--teal-deep);font-weight:800}
td.mid{color:#8a6b2f;font-weight:700}

/* ---------- reviews ---------- */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;flex-direction:column;gap:14px;
  transition:transform .25s,box-shadow .25s;
}
.rev-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.rev-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:16px;color:#fff;
}
.rev-top b{font-size:14.5px;display:block}
.rev-top span{font-size:12.5px;color:var(--ink-soft)}
.rev-card p{font-size:14px;color:var(--ink-soft);flex:1}
.rev-stars{color:var(--sun);font-size:14px;letter-spacing:2px}

/* ---------- token price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{
  background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:26px;
  position:relative;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--coral)}
.price-card.pop{border-color:var(--coral);box-shadow:0 16px 40px rgba(255,92,69,.16)}
.price-tag{
  position:absolute;top:-13px;right:20px;background:var(--coral);color:#fff;
  font-size:12px;font-weight:800;padding:5px 14px;border-radius:999px;
}
.price-card h3{font-size:17px;margin-bottom:6px}
.price-card .p-sub{font-size:13px;color:var(--ink-soft);margin-bottom:16px}
.price-val{font-size:34px;font-weight:900;color:var(--coral);letter-spacing:-.02em}
.price-val small{font-size:14px;font-weight:700;color:var(--ink-soft);margin-left:4px}
.price-card ul{margin-top:16px;display:grid;gap:9px}
.price-card li{font-size:13.5px;color:var(--ink-soft);display:flex;gap:8px;align-items:flex-start}
.price-card li::before{content:"✓";color:var(--teal);font-weight:900;flex-shrink:0}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch}
.case-img{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-sm);
}
.case-img img{width:100%;height:auto;object-fit:cover}
.case-side{display:grid;gap:16px}
.case-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:transform .25s,box-shadow .25s;
}
.case-box:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.case-box h3{font-size:16px;margin-bottom:8px}
.case-box p{font-size:13.5px;color:var(--ink-soft)}

/* ---------- articles ---------- */
.art-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.art-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:20px 22px;display:flex;justify-content:space-between;align-items:center;gap:14px;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.art-item:hover{transform:translateX(5px);box-shadow:var(--shadow-sm);border-color:var(--sun)}
.art-item span{font-size:14px;font-weight:700}
.art-item i{
  font-style:normal;font-size:12px;font-weight:800;color:#fff;background:var(--ink);
  padding:4px 12px;border-radius:999px;flex-shrink:0;
}

/* ---------- form ---------- */
.contact-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:start}
.contact-card{
  background:linear-gradient(155deg,#0f9d8a,#0a6a5c);color:#fff;
  border-radius:26px;padding:32px;box-shadow:0 20px 44px rgba(10,122,107,.26);
}
.contact-card h3{font-size:20px;margin-bottom:12px}
.contact-card p{font-size:14px;color:rgba(255,255,255,.86);margin-bottom:20px}
.contact-rows{display:grid;gap:12px}
.contact-row{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  border-radius:14px;padding:12px 16px;font-size:13.5px;
}
.contact-row b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-bottom:3px}
.qr-box{margin-top:18px;background:#fff;border-radius:16px;padding:14px;width:160px}
.qr-box img{width:100%;border-radius:8px}
.qr-box span{display:block;text-align:center;font-size:12px;font-weight:700;color:var(--ink);margin-top:8px}

.form-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:30px;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;font-weight:800;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink);
  background:var(--paper);border:1.5px solid var(--line);border-radius:12px;
  padding:12px 14px;transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--coral);background:#fff;box-shadow:0 0 0 4px rgba(255,92,69,.12);
}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:12.5px;color:var(--ink-soft);margin-top:10px;text-align:center}
.form-ok{
  display:none;background:rgba(15,157,138,.1);border:1px solid rgba(15,157,138,.4);
  color:var(--teal-deep);font-size:13.5px;font-weight:700;border-radius:12px;
  padding:11px 14px;margin-top:14px;text-align:center;
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item.open{border-color:var(--coral);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;background:none;border:none;font-family:inherit;text-align:left;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:17px 20px;font-size:15px;font-weight:800;color:var(--ink);cursor:pointer;
  transition:background .2s;
}
.faq-q:hover{background:#fffaf0}
.faq-q i{
  font-style:normal;font-size:20px;color:var(--coral);flex-shrink:0;
  transition:transform .28s;line-height:1;
}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--ink-soft)}

/* ---------- links ---------- */
.link-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.link-cloud a{
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 17px;font-size:13px;font-weight:700;color:var(--ink-soft);
  transition:all .22s;
}
.link-cloud a:hover{background:var(--teal);border-color:var(--teal);color:#fff;transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{
  background:#171b2e;color:#c9cede;padding:52px 0 0;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding-bottom:36px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand img{width:36px;height:36px;object-fit:contain;border-radius:9px;background:#fff;padding:3px}
.foot-brand b{color:#fff;font-size:17px;font-weight:800}
.site-footer p{font-size:13.5px;color:#a3a9bd;line-height:1.75}
.foot-col h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:14px}
.foot-col ul{display:grid;gap:9px}
.foot-col a{font-size:13.5px;color:#a3a9bd;transition:color .2s}
.foot-col a:hover{color:var(--sun)}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.5px;color:#8b92a8;
}
.foot-bottom a{color:#a3a9bd}
.foot-bottom a:hover{color:var(--sun)}

/* ---------- floating ---------- */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:50px;height:50px;border-radius:16px;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:900;color:#fff;font-family:inherit;
  box-shadow:0 10px 24px rgba(23,27,46,.24);
  transition:transform .2s,box-shadow .2s,background .2s;
  writing-mode:vertical-rl;letter-spacing:.1em;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(23,27,46,.32)}
.float-cs{background:var(--coral)}
.float-top{background:var(--ink);display:none}
.float-top.show{display:flex}
.qr-pop{
  position:fixed;right:78px;bottom:22px;z-index:91;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;
  box-shadow:var(--shadow);width:180px;display:none;
}
.qr-pop.show{display:block;animation:popIn .22s ease}
@keyframes popIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.qr-pop img{width:100%;border-radius:8px}
.qr-pop span{display:block;text-align:center;font-size:12px;font-weight:700;color:var(--ink);margin-top:7px}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-side{grid-template-columns:1fr 1fr}
  .svc-grid,.rev-grid,.price-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.compare-wrap,.case-grid,.contact-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:stretch;
    position:absolute;top:70px;left:0;right:0;
    background:#fdfaf4;border-bottom:1px solid var(--line);
    padding:12px 22px 20px;gap:2px;box-shadow:0 18px 30px rgba(23,27,46,.08);
  }
  .nav-links.open a{padding:11px 12px;border-radius:10px}
}
@media (max-width:640px){
  .sec{padding:56px 0}
  .hero{padding:44px 0 58px}
  .hero-side{grid-template-columns:1fr}
  .svc-grid,.rev-grid,.price-grid,.flow,.net-grid,.art-list{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .hero-actions .btn{width:100%}
  .float-btn{width:44px;height:44px;font-size:10px}
  .qr-pop{right:70px;width:158px}
}