:root{
  --ink:#0e1430;
  --ink2:#3a4463;
  --muted:#5f6b8c;
  --brand:#3d5bff;
  --violet:#7b4dff;
  --magenta:#ff3d9a;
  --cyan:#00c8bd;
  --line:rgba(24,40,120,.10);
  --radius:18px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:#f5f7ff;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(820px 520px at 10% -8%,rgba(61,91,255,.18),transparent 62%),
    radial-gradient(700px 460px at 92% 2%,rgba(255,61,154,.14),transparent 62%),
    radial-gradient(880px 600px at 50% 106%,rgba(0,200,189,.16),transparent 64%);
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.32;color:var(--ink);font-weight:800;letter-spacing:.2px;}
p{margin:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:72px 0;position:relative;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:800;
  letter-spacing:1.6px;
  color:var(--brand);
  background:linear-gradient(120deg,rgba(61,91,255,.12),rgba(255,61,154,.10));
  border:1px solid rgba(61,91,255,.18);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}
.section-head{max-width:780px;margin:0 auto 38px;text-align:center;}
.section-head.left{margin:0 0 34px;text-align:left;max-width:820px;}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head h2::after{
  content:"";
  display:block;
  width:66px;height:4px;border-radius:4px;
  margin:14px auto 0;
  background:linear-gradient(90deg,var(--brand),var(--magenta),var(--cyan));
}
.section-head.left h2::after{margin-left:0;}
.section-head p{color:var(--muted);font-size:15.5px;margin-top:14px;}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;
  font-size:15px;font-weight:700;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  font-family:inherit;
  transition:transform .22s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,#3d5bff,#7b4dff 48%,#ff3d9a);
  box-shadow:0 10px 24px rgba(61,91,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(123,77,255,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;color:#1b2350;
  border-color:rgba(61,91,255,.28);
  box-shadow:0 6px 16px rgba(24,40,120,.06);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--brand);color:var(--brand);box-shadow:0 12px 26px rgba(61,91,255,.16);}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px;}
/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(24,40,120,.08);
}
.nav-wrap{display:flex;align-items:center;gap:16px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand img{max-height:36px;width:auto;max-width:150px;object-fit:contain;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.6px;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:0;margin-left:auto;flex-wrap:nowrap;}
.nav-links a{
  padding:9px 10px;
  font-size:14.5px;font-weight:600;color:var(--ink2);
  border-radius:9px;white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}
.nav-links a:hover{color:var(--brand);background:rgba(61,91,255,.09);}
.nav-cta{flex:0 0 auto;padding:10px 18px;font-size:14.5px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid rgba(24,40,120,.14);
  border-radius:11px;background:#fff;
  cursor:pointer;padding:0;
  margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;border-radius:2px;background:var(--ink);transition:.25s;}
/* hero */
.hero{position:relative;padding:60px 0 0;overflow:hidden;}
.hero::before{
  content:"";
  position:absolute;inset:auto -10% 26% auto;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(61,91,255,.22),rgba(255,61,154,.10) 55%,transparent 72%);
  filter:blur(6px);
  pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:start;position:relative;z-index:1;}
.hero h1{font-size:clamp(29px,4.2vw,48px);letter-spacing:.5px;line-height:1.24;}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#3d5bff,#7b4dff 46%,#ff3d9a);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:#3d5bff;
}
.hero-desc{color:var(--ink2);font-size:16.5px;margin-top:20px;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags span{
  font-size:13px;font-weight:700;color:#2b3765;
  background:rgba(255,255,255,.86);
  border:1px solid rgba(61,91,255,.2);
  border-radius:999px;padding:6px 13px;
  box-shadow:0 4px 12px rgba(24,40,120,.05);
  transition:transform .22s ease,border-color .22s ease,color .22s ease;
}
.hero-tags span:hover{transform:translateY(-2px);border-color:var(--magenta);color:var(--magenta);}
.hero-panel{
  background:rgba(255,255,255,.94);
  border:1px solid rgba(61,91,255,.16);
  border-radius:22px;
  padding:22px;
  box-shadow:0 22px 50px rgba(24,40,120,.10);
}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.stat{
  border-radius:14px;
  padding:16px 14px;
  background:linear-gradient(140deg,rgba(61,91,255,.09),rgba(255,61,154,.06));
  border:1px solid rgba(61,91,255,.12);
}
.stat strong{display:block;font-size:24px;letter-spacing:.5px;color:#1b2350;}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:4px;}
.panel-title{font-size:16px;font-weight:800;color:var(--ink);margin-top:20px;}
.panel-text{font-size:14px;color:var(--muted);margin-top:8px;}
.model-strip{
  margin-top:46px;
  border-top:1px solid rgba(24,40,120,.08);
  border-bottom:1px solid rgba(24,40,120,.08);
  background:rgba(255,255,255,.62);
  overflow:hidden;
  padding:14px 0;
}
.model-track{display:flex;width:max-content;animation:modelScroll 46s linear infinite;}
.model-strip:hover .model-track{animation-play-state:paused;}
.model-track span{
  margin-right:14px;
  font-size:13.5px;font-weight:700;color:#37436b;
  background:#fff;
  border:1px solid rgba(24,40,120,.09);
  border-radius:999px;
  padding:7px 15px;
  white-space:nowrap;
}
@keyframes modelScroll{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
/* generic cards and grids */
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:0 10px 28px rgba(24,40,120,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{
  transform:translateY(-5px);
  border-color:rgba(61,91,255,.30);
  box-shadow:0 20px 42px rgba(61,91,255,.14);
}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;align-items:stretch;}
.card-icon{
  display:flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:13px;
  color:#fff;
  background:linear-gradient(135deg,#3d5bff,#7b4dff);
  box-shadow:0 10px 20px rgba(61,91,255,.25);
  margin-bottom:16px;
  flex:0 0 auto;
}
.card-icon.alt{background:linear-gradient(135deg,#ff3d9a,#ff8a3d);box-shadow:0 10px 20px rgba(255,61,154,.24);}
.card-icon.alt2{background:linear-gradient(135deg,#00c8bd,#3d5bff);box-shadow:0 10px 20px rgba(0,200,189,.24);}
.card-icon svg{width:23px;height:23px;}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--muted);}
/* about */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start;}
.about-text p{font-size:15.5px;color:var(--ink2);margin-bottom:16px;}
.check-list{display:grid;gap:11px;margin-top:6px;}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.5px;color:#2a3352;font-weight:600;
}
.check-list li::before{
  content:"";
  flex:0 0 auto;
  width:18px;height:18px;border-radius:50%;
  margin-top:4px;
  background:linear-gradient(135deg,#00c8bd,#3d5bff);
  box-shadow:0 0 0 3px rgba(61,91,255,.12);
}
.about-card h3{font-size:18px;margin-bottom:14px;}
.about-card ul{display:grid;gap:12px;}
.about-card li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.5px;color:var(--ink2);
  padding-bottom:12px;
  border-bottom:1px dashed rgba(24,40,120,.10);
}
.about-card li:last-child{border-bottom:none;padding-bottom:0;}
.about-card li b{color:#1b2350;}
/* scenes */
.scene-lead{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:26px;}
.tag-cloud{
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:0 10px 28px rgba(24,40,120,.05);
}
.tag-cloud h3{font-size:17px;margin-bottom:16px;}
.tags{display:flex;flex-wrap:wrap;gap:10px;}
.tags span{
  font-size:13.5px;font-weight:600;color:#33406b;
  background:linear-gradient(140deg,rgba(61,91,255,.08),rgba(0,200,189,.08));
  border:1px solid rgba(61,91,255,.14);
  border-radius:999px;
  padding:7px 14px;
  transition:transform .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.tags span:hover{transform:translateY(-2px);color:var(--brand);border-color:rgba(61,91,255,.42);box-shadow:0 8px 18px rgba(61,91,255,.14);}
/* solutions */
.solution-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.solution-tags span{
  font-size:12.5px;font-weight:700;color:#4b5680;
  background:#f2f5ff;
  border-radius:7px;
  padding:4px 9px;
}
/* network */
.network-note{
  margin-top:22px;
  text-align:center;
  font-size:14.5px;
  color:var(--muted);
}
/* process */
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step{position:relative;padding-left:0;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  font-size:15px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#3d5bff,#ff3d9a);
  box-shadow:0 10px 20px rgba(123,77,255,.24);
  margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}
/* cases */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;}
.case-card{
  margin:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 10px 28px rgba(24,40,120,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.case-card:hover{transform:translateY(-5px);border-color:rgba(61,91,255,.28);box-shadow:0 20px 42px rgba(61,91,255,.14);}
.case-media{
  aspect-ratio:4/3;
  background:linear-gradient(140deg,#eef2ff,#f7f9ff);
  display:flex;align-items:center;justify-content:center;
  padding:14px;
  border-bottom:1px solid rgba(24,40,120,.06);
}
.case-media img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:8px;}
.case-card figcaption{
  padding:14px 18px;
  font-size:14px;font-weight:700;color:#2a3352;
}
/* review */
.score-card{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:26px;
  align-items:center;
  background:linear-gradient(130deg,rgba(61,91,255,.10),rgba(255,61,154,.08) 55%,rgba(0,200,189,.10));
  border:1px solid rgba(61,91,255,.20);
  border-radius:20px;
  padding:26px 28px;
  margin-bottom:26px;
}
.score-num{display:flex;align-items:baseline;gap:6px;}
.score-num strong{font-size:clamp(40px,6vw,58px);line-height:1;color:#1b2350;letter-spacing:-1px;}
.score-num span{font-size:17px;font-weight:700;color:var(--muted);}
.stars{font-size:20px;letter-spacing:3px;color:#ffb020;}
.score-body p{font-size:15px;color:var(--ink2);margin-top:8px;}
.score-body b{color:#1b2350;}
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:16px;
  background:#fff;
  box-shadow:0 10px 28px rgba(24,40,120,.05);
  -webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14.5px;}
caption{caption-side:top;text-align:left;padding:16px 18px 12px;font-size:15px;font-weight:800;color:#1b2350;}
th{
  background:linear-gradient(120deg,rgba(61,91,255,.10),rgba(255,61,154,.08));
  color:#1b2350;text-align:left;
  padding:14px 16px;font-weight:800;white-space:nowrap;
}
td{padding:13px 16px;border-top:1px solid rgba(24,40,120,.07);color:var(--ink2);vertical-align:top;}
td:first-child{font-weight:700;color:#1b2350;white-space:nowrap;}
td.is-own{background:rgba(61,91,255,.05);color:#1b2350;font-weight:600;}
/* reviews */
.review-card{display:flex;flex-direction:column;height:100%;}
.review-text{font-size:14.5px;color:var(--ink2);position:relative;padding-top:6px;}
.review-text::before{
  content:"“";
  display:block;
  font-size:34px;line-height:1;
  color:rgba(61,91,255,.34);
  font-weight:800;
  margin-bottom:4px;
}
.review-meta{display:flex;align-items:center;gap:11px;margin-top:auto;padding-top:18px;border-top:1px dashed rgba(24,40,120,.12);}
.avatar{
  width:38px;height:38px;border-radius:50%;
  flex:0 0 auto;
  background:linear-gradient(135deg,#3d5bff,#ff3d9a);
  box-shadow:0 6px 14px rgba(61,91,255,.22);
}
.avatar.a2{background:linear-gradient(135deg,#00c8bd,#3d5bff);}
.avatar.a3{background:linear-gradient(135deg,#ff8a3d,#ff3d9a);}
.avatar.a4{background:linear-gradient(135deg,#7b4dff,#00c8bd);}
.avatar.a5{background:linear-gradient(135deg,#ff3d9a,#7b4dff);}
.avatar.a6{background:linear-gradient(135deg,#3d5bff,#00c8bd);}
.review-meta strong{display:block;font-size:14.5px;color:#1b2350;}
.review-meta span{display:block;font-size:12.5px;color:var(--muted);}
/* contact */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 14px 34px rgba(24,40,120,.07);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:14px;font-weight:700;color:#2a3352;}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:11px;
  border:1px solid rgba(24,40,120,.16);
  background:#fbfcff;
  font-size:15px;
  font-family:inherit;
  color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(61,91,255,.14);
}
.field textarea{min-height:120px;resize:vertical;}
.form-tip{font-size:13px;color:var(--muted);margin-top:12px;}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 14px 34px rgba(24,40,120,.07);}
.contact-card h3{font-size:17px;margin-bottom:16px;}
.contact-list{display:grid;gap:12px;}
.contact-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--ink2);
  padding-bottom:12px;border-bottom:1px dashed rgba(24,40,120,.10);
}
.contact-list li:last-child{border-bottom:none;padding-bottom:0;}
.contact-list b{color:#1b2350;font-weight:700;}
.qr-box{
  margin-top:18px;
  padding:16px;
  border-radius:14px;
  background:linear-gradient(140deg,rgba(61,91,255,.08),rgba(0,200,189,.08));
  border:1px solid rgba(61,91,255,.14);
  text-align:center;
}
.qr-box img{width:150px;max-width:100%;height:auto;margin:0 auto;border-radius:10px;background:#fff;padding:6px;}
.qr-box p{font-size:13px;color:var(--muted);margin-top:10px;}
/* faq */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{border-color:rgba(61,91,255,.36);box-shadow:0 14px 30px rgba(61,91,255,.12);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;
  background:none;border:none;cursor:pointer;
  font-family:inherit;font-size:15.5px;font-weight:700;color:#1b2350;
  text-align:left;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;border-radius:50%;
  background:linear-gradient(135deg,rgba(61,91,255,.16),rgba(255,61,154,.14));
  transition:transform .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:#3d5bff;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;transition:opacity .25s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .34s ease;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 20px 18px;font-size:14.5px;color:var(--muted);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
/* wiki */
.wiki-card h3{font-size:16.5px;}
.wiki-card p{font-size:14px;}
/* news */
.news-list{display:grid;gap:12px;max-width:960px;margin:0 auto;}
.news-item{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 20px;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.news-item:hover{transform:translateX(4px);border-color:rgba(61,91,255,.32);box-shadow:0 14px 28px rgba(61,91,255,.12);}
.news-item .news-txt{display:flex;flex-direction:column;gap:4px;min-width:0;}
.news-item strong{font-size:15px;color:#1b2350;font-weight:700;}
.news-item small{font-size:12.5px;color:var(--muted);}
.news-arrow{
  flex:0 0 auto;
  width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(61,91,255,.14),rgba(255,61,154,.12));
  color:#3d5bff;font-weight:800;
}
/* join */
.join-card{
  display:grid;
  grid-template-columns:1.35fr .65fr;
  gap:26px;
  align-items:center;
  padding:34px;
  border-radius:22px;
  background:linear-gradient(125deg,rgba(61,91,255,.14),rgba(255,61,154,.10) 52%,rgba(0,200,189,.14));
  border:1px solid rgba(61,91,255,.22);
  box-shadow:0 20px 46px rgba(61,91,255,.12);
}
.join-card h2{font-size:clamp(22px,2.6vw,30px);}
.join-card p{font-size:15px;color:var(--ink2);margin-top:12px;}
.join-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.join-points span{
  font-size:13px;font-weight:700;color:#2b3765;
  background:rgba(255,255,255,.9);
  border:1px solid rgba(61,91,255,.18);
  border-radius:999px;padding:6px 13px;
}
.join-action{display:flex;justify-content:flex-end;}
/* footer */
.site-footer{
  margin-top:12px;
  background:linear-gradient(160deg,#0b1026,#141b3c);
  color:#b9c2e0;
  padding:44px 0 20px;
}
.footer-grid{display:grid;grid-template-columns:1.1fr 1.4fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand img{max-height:34px;width:auto;max-width:140px;object-fit:contain;}
.footer-brand span{font-size:17px;font-weight:800;color:#fff;}
.site-footer p{font-size:14px;color:#a7b1d4;line-height:1.75;}
.footer-contact{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:16px;font-size:13.5px;color:#c3cceb;}
.footer-contact a{color:#c3cceb;transition:color .2s ease;}
.footer-contact a:hover{color:#7ea0ff;}
.footer-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-wrap:wrap;gap:10px;}
.footer-links a{
  font-size:13.5px;color:#b9c2e0;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius:9px;
  padding:7px 13px;
  transition:color .22s ease,background .22s ease,border-color .22s ease,transform .22s ease;
}
.footer-links a:hover{color:#fff;background:rgba(126,160,255,.22);border-color:rgba(126,160,255,.42);transform:translateY(-2px);}
.footer-bottom{
  margin-top:30px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#8f9cc4;
}
.footer-bottom a{color:#b9c2e0;transition:color .2s ease;}
.footer-bottom a:hover{color:#fff;}
/* float tools */
.float-tools{
  position:fixed;
  right:18px;bottom:22px;
  z-index:80;
  display:flex;flex-direction:column;gap:12px;
}
.float-btn{
  width:50px;height:50px;border-radius:50%;
  border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:#fff;
  background:linear-gradient(135deg,#3d5bff,#7b4dff);
  box-shadow:0 12px 26px rgba(61,91,255,.36);
  transition:transform .22s ease,box-shadow .22s ease,opacity .25s ease;
}
.float-btn svg{width:22px;height:22px;}
.float-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 16px 32px rgba(123,77,255,.42);}
#backTop{opacity:0;pointer-events:none;background:linear-gradient(135deg,#00c8bd,#3d5bff);}
#backTop.show{opacity:1;pointer-events:auto;}
.kefu-panel{
  position:fixed;
  right:18px;bottom:86px;
  z-index:81;
  width:250px;
  background:#fff;
  border:1px solid rgba(61,91,255,.18);
  border-radius:18px;
  padding:18px;
  box-shadow:0 22px 50px rgba(24,40,120,.18);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
}
.kefu-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.kefu-panel h3{font-size:15px;margin-bottom:8px;}
.kefu-panel p{font-size:13px;color:var(--muted);line-height:1.7;}
.kefu-panel img{width:100%;max-width:180px;height:auto;margin:12px auto 6px;border-radius:10px;background:#f4f6ff;padding:6px;}
.kefu-panel .kefu-line{font-size:13px;color:#2a3352;font-weight:700;margin-top:6px;}
/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .model-track{animation:none;}
  html{scroll-behavior:auto;}
}
/* responsive */
@media (max-width:1080px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid rgba(24,40,120,.10);
    box-shadow:0 18px 32px rgba(24,40,120,.12);
    padding:8px 14px 14px;
    display:none;
    margin-left:0;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 10px;font-size:15px;border-radius:9px;}
  .nav-cta{margin-left:0;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .about-grid{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .process-grid{grid-template-columns:repeat(2,1fr);}
  .scene-lead{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .join-card{grid-template-columns:1fr;}
  .join-action{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:720px){
  .section{padding:54px 0;}
  .hero{padding-top:44px;}
  .grid-3,.grid-2,.process-grid,.scene-lead,.form-row{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .score-card{grid-template-columns:1fr;gap:16px;padding:22px;}
  .nav-wrap{gap:10px;}
  .brand-name{font-size:16px;}
  .nav-cta{padding:9px 14px;font-size:13.5px;}
  .hero-actions .btn{width:100%;}
  .join-card{padding:24px;}
  .float-tools{right:12px;bottom:16px;}
  .kefu-panel{right:12px;bottom:78px;width:calc(100vw - 24px);max-width:290px;}
  .news-item{flex-direction:row;align-items:center;}
}
@media (max-width:420px){
  .stat-grid{grid-template-columns:1fr;}
}