:root{
  --ink:#0e2531;
  --ink-2:#31505d;
  --muted:#5f7d89;
  --brand:#0ea79b;
  --brand-dark:#0a7d84;
  --brand-soft:#e9f8f6;
  --line:rgba(12,80,100,.12);
  --card:#ffffff;
  --radius:18px;
  --shadow:0 20px 44px -32px rgba(9,70,90,.6);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:#f4fafb;
  background-image:
    radial-gradient(880px 520px at 6% -8%, rgba(14,167,155,.16), transparent 62%),
    radial-gradient(760px 480px at 98% 2%, rgba(91,108,255,.13), transparent 60%),
    radial-gradient(900px 700px at 48% 104%, rgba(255,138,80,.11), transparent 62%);
  line-height:1.72;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;}
a{color:var(--brand-dark);}
.container{width:100%;max-width:1160px;margin-inline:auto;padding-inline:20px;}
h1,h2,h3{line-height:1.28;color:var(--ink);margin:0;}
p{margin:0;}
.hl{color:var(--brand-dark);}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.12em;font-weight:700;
  color:var(--brand-dark);background:var(--brand-soft);border:1px solid rgba(14,167,155,.22);
  padding:5px 14px;border-radius:999px;
}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head h2{font-size:clamp(23px,2.6vw,32px);margin:14px 0 10px;font-weight:800;letter-spacing:-.3px;}
.section-head p{color:var(--muted);font-size:15.5px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(12,80,100,.09);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.ai-page-logo{height:34px !important;width:auto !important;max-width:130px !important;object-fit:contain;display:block;}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.02em;white-space:nowrap;}
.nav{display:flex;align-items:center;}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;}
.nav-links a{
  display:block;padding:9px 11px;font-size:14px;color:var(--ink-2);text-decoration:none;
  border-radius:9px;white-space:nowrap;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--brand-dark);background:var(--brand-soft);}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .25s;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;font-size:15px;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn-primary{background:linear-gradient(135deg,#12b8aa,#0a8f9c);color:#fff;box-shadow:0 14px 26px -14px rgba(12,160,150,.85);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 32px -16px rgba(12,160,150,.95);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.btn-ghost{background:#fff;color:var(--brand-dark);border-color:rgba(14,167,155,.42);}
.btn-ghost:hover{transform:translateY(-2px);background:var(--brand-soft);box-shadow:0 14px 26px -20px rgba(12,160,150,.8);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}

/* ---------- hero ---------- */
.hero{position:relative;padding:66px 0 54px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto -10%;height:640px;pointer-events:none;z-index:0;
  background:
    radial-gradient(closest-side, rgba(14,167,155,.22), transparent 72%) 16% 34%/540px 540px no-repeat,
    radial-gradient(closest-side, rgba(91,108,255,.18), transparent 72%) 84% 8%/480px 480px no-repeat,
    radial-gradient(closest-side, rgba(255,138,80,.16), transparent 72%) 62% 92%/420px 420px no-repeat;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:center;}
.hero h1{font-size:clamp(30px,4.2vw,48px);font-weight:850;letter-spacing:-.6px;margin:16px 0 0;}
.hero-sub{color:var(--ink-2);font-size:16px;margin-top:16px;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-points{list-style:none;padding:0;margin:26px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink-2);}
.hero-points li::before{
  content:"";width:16px;height:16px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,#12b8aa,#0a8f9c);
  box-shadow:inset 0 0 0 2px #fff,0 0 0 1px rgba(12,160,150,.4);
}
.hero-panel{
  position:relative;padding:26px 24px;border-radius:24px;
  background:linear-gradient(158deg,#ffffff 0%,#f1fbfa 58%,#eef1ff 100%);
  border:1px solid rgba(9,120,130,.16);
  box-shadow:0 34px 62px -44px rgba(9,80,100,.75);
  animation:floatPanel 7s ease-in-out infinite;
}
@keyframes floatPanel{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
.hero-panel h2{font-size:15px;font-weight:800;color:var(--brand-dark);letter-spacing:.06em;}
.model-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.model-chips span{
  font-size:12.5px;padding:5px 11px;border-radius:999px;background:#fff;
  border:1px solid rgba(12,140,150,.2);color:#155c66;font-weight:600;
  transition:transform .2s,border-color .2s;
}
.model-chips span:hover{transform:translateY(-2px);border-color:rgba(14,167,155,.6);}
.panel-divider{height:1px;background:linear-gradient(90deg,rgba(12,140,150,.28),transparent);margin:20px 0 16px;}
.panel-list{list-style:none;padding:0;margin:0;display:grid;gap:11px;}
.panel-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);align-items:flex-start;}
.panel-list li i{
  flex-shrink:0;width:18px;height:18px;border-radius:6px;margin-top:3px;
  background:linear-gradient(135deg,#12b8aa,#0a8f9c);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-style:normal;font-size:11px;line-height:1;
}

/* ---------- metrics ---------- */
.metrics{padding:0 0 10px;}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px 18px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.metric:hover{transform:translateY(-4px);box-shadow:0 26px 46px -34px rgba(9,70,90,.8);}
.metric strong{display:block;font-size:clamp(22px,2.4vw,28px);font-weight:850;color:var(--brand-dark);letter-spacing:-.5px;}
.metric span{display:block;font-size:13.5px;color:var(--muted);margin-top:4px;}

/* ---------- generic sections ---------- */
.section{padding:60px 0;}
.section-soft{background:rgba(255,255,255,.62);border-block:1px solid rgba(12,80,100,.07);}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start;}
.about-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px;}
.about-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.about-tags span{
  font-size:13px;padding:6px 13px;border-radius:8px;background:#fff;
  border:1px solid rgba(12,140,150,.2);color:#155c66;font-weight:600;
}
.about-list{display:grid;gap:12px;}
.about-item{
  display:flex;gap:13px;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:15px 17px;box-shadow:var(--shadow);transition:transform .22s,border-color .22s;
}
.about-item:hover{transform:translateX(4px);border-color:rgba(14,167,155,.45);}
.about-item i{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#12b8aa,#0a8f9c);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:14px;font-weight:700;
}
.about-item h3{font-size:15px;margin:0 0 3px;}
.about-item p{font-size:13.5px;color:var(--muted);line-height:1.6;}

/* ---------- service cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s;
  display:flex;flex-direction:column;gap:10px;
}
.service-card:hover{transform:translateY(-5px);border-color:rgba(14,167,155,.45);box-shadow:0 30px 50px -34px rgba(9,70,90,.85);}
.service-card h3{font-size:17px;font-weight:800;}
.service-card p{font-size:14px;color:var(--muted);flex:1;}
.mini-tags{display:flex;flex-wrap:wrap;gap:7px;}
.mini-tags span{font-size:12.5px;padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}

/* ---------- chips ---------- */
.chip-grid{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  padding:8px 15px;border-radius:999px;background:#fff;border:1px solid rgba(12,140,150,.2);
  font-size:14px;color:#155c66;font-weight:600;
  transition:transform .2s,border-color .2s,color .2s,box-shadow .2s;
}
.chip:hover{transform:translateY(-3px);border-color:rgba(14,167,155,.65);color:var(--brand-dark);box-shadow:0 12px 22px -18px rgba(12,160,150,.9);}

/* ---------- solutions ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.solution-card{
  background:linear-gradient(160deg,#ffffff,#f4fcfb);
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);transition:transform .25s,border-color .25s;
}
.solution-card:hover{transform:translateY(-4px);border-color:rgba(14,167,155,.45);}
.solution-card h3{font-size:16.5px;margin-bottom:8px;}
.solution-card p{font-size:14px;color:var(--muted);}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 16px 18px;
  box-shadow:var(--shadow);transition:transform .25s;
}
.step:hover{transform:translateY(-4px);}
.step-num{
  width:30px;height:30px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#fff;background:linear-gradient(135deg,#12b8aa,#0a8f9c);
  margin-bottom:12px;
}
.step h3{font-size:15px;margin-bottom:6px;}
.step p{font-size:13px;color:var(--muted);line-height:1.6;}

/* ---------- network ---------- */
.network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.network-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;
  box-shadow:var(--shadow);
}
.network-card h3{font-size:15px;color:var(--brand-dark);margin-bottom:6px;}
.network-card p{font-size:13.5px;color:var(--muted);}
.network-note{
  margin-top:18px;background:var(--brand-soft);border:1px solid rgba(14,167,155,.25);
  border-radius:14px;padding:14px 18px;font-size:14px;color:#0b5a60;
}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.case-card:hover{transform:translateY(-5px);box-shadow:0 30px 50px -34px rgba(9,70,90,.85);}
.case-thumb{
  aspect-ratio:4/3;border-radius:12px;background:linear-gradient(160deg,#eef8f8,#eef1ff);
  display:flex;align-items:center;justify-content:center;padding:10px;overflow:hidden;
}
.case-thumb img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block;}
.case-card h3{font-size:15px;margin:12px 0 5px;}
.case-card p{font-size:13px;color:var(--muted);}

/* ---------- review ---------- */
.review-grid{display:grid;grid-template-columns:300px 1fr;gap:22px;align-items:start;}
.score-card{
  background:linear-gradient(160deg,#ffffff,#eefbf9);
  border:1px solid rgba(14,167,155,.3);border-radius:20px;padding:26px 22px;
  box-shadow:0 26px 48px -36px rgba(9,70,90,.8);text-align:center;
}
.score-stars{font-size:22px;letter-spacing:3px;color:#f5a623;}
.score-num{font-size:52px;font-weight:850;color:var(--brand-dark);line-height:1.05;margin-top:8px;letter-spacing:-2px;}
.score-num span{font-size:18px;color:var(--muted);font-weight:600;letter-spacing:0;}
.score-card p{font-size:14px;color:var(--ink-2);margin-top:8px;}
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;min-width:660px;font-size:14.5px;}
thead th{
  background:#eefaf8;color:#0c3a44;text-align:left;padding:14px 16px;font-weight:800;
  border-bottom:1px solid #d8eeec;white-space:nowrap;
}
tbody td{padding:13px 16px;border-bottom:1px solid #edf5f6;color:#2b4a58;vertical-align:top;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#f8fdfd;}
td strong{color:var(--brand-dark);}

/* ---------- reviews ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.voice-card{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;
  transition:transform .25s,border-color .25s;
}
.voice-card:hover{transform:translateY(-5px);border-color:rgba(14,167,155,.4);}
.voice-stars{color:#f5a623;font-size:14px;letter-spacing:2px;}
.voice-card blockquote{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.72;flex:1;}
.voice-card figcaption{display:flex;flex-direction:column;border-top:1px dashed rgba(12,80,100,.16);padding-top:12px;}
.voice-card figcaption strong{font-size:14px;color:var(--ink);}
.voice-card figcaption span{font-size:12.5px;color:var(--muted);}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:start;}
.form-side p{color:var(--ink-2);font-size:15px;margin-bottom:12px;}
.form-side .side-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px;}
.form-side .side-list li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);}
.form-side .side-list li::before{content:"·";color:var(--brand);font-weight:900;font-size:20px;line-height:1;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:0 28px 52px -38px rgba(9,70,90,.8);
}
.field{margin-bottom:15px;}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:10px;border:1px solid rgba(12,80,100,.2);
  background:#fbfdfd;font-size:14.5px;font-family:inherit;color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(14,167,155,.14);
}
.field textarea{min-height:110px;resize:vertical;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form-actions{margin-top:6px;}
.form-actions .btn{width:100%;}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:10px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);transition:border-color .25s;
}
.faq-item.open{border-color:rgba(14,167,155,.5);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:15px;font-weight:700;color:var(--ink);font-family:inherit;line-height:1.5;
}
.faq-q:hover{color:var(--brand-dark);}
.faq-icon{
  position:relative;flex-shrink:0;width:20px;height:20px;border-radius:50%;
  background:var(--brand-soft);transition:transform .3s,background .3s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-dark);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:9px;height:2px;}
.faq-icon::after{width:2px;height:9px;transition:opacity .3s;}
.faq-item.open .faq-icon{transform:rotate(180deg);background:rgba(14,167,155,.22);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 18px 16px;font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ---------- wiki ---------- */
.wiki-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.wiki-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;
  box-shadow:var(--shadow);transition:transform .22s,border-color .22s;
}
.wiki-card:hover{transform:translateY(-4px);border-color:rgba(14,167,155,.45);}
.wiki-card h3{font-size:14.5px;color:var(--brand-dark);margin-bottom:6px;}
.wiki-card p{font-size:13px;color:var(--muted);line-height:1.65;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.news-card{
  display:flex;flex-direction:column;gap:9px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;text-decoration:none;box-shadow:var(--shadow);
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.news-card:hover{transform:translateY(-5px);border-color:rgba(14,167,155,.45);box-shadow:0 28px 48px -34px rgba(9,70,90,.85);}
.news-card h3{font-size:15.5px;color:var(--ink);}
.news-card p{font-size:13.5px;color:var(--muted);flex:1;}
.news-more{font-size:13.5px;font-weight:700;color:var(--brand-dark);}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:start;}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.contact-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  box-shadow:var(--shadow);
}
.contact-item h3{font-size:13px;color:var(--muted);font-weight:700;margin-bottom:4px;letter-spacing:.04em;}
.contact-item p{font-size:15px;font-weight:700;color:var(--ink);word-break:break-all;}
.contact-item p a{color:var(--brand-dark);text-decoration:none;}
.contact-item p a:hover{text-decoration:underline;}
.qr-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;text-align:center;
  box-shadow:0 28px 52px -38px rgba(9,70,90,.8);
}
.qr-box{
  background:linear-gradient(160deg,#eef8f8,#eef1ff);border-radius:14px;padding:14px;
  display:flex;align-items:center;justify-content:center;
}
.qr-box img{width:170px;max-width:100%;height:auto;display:block;border-radius:8px;}
.qr-card p{font-size:13.5px;color:var(--muted);margin-top:12px;}

/* ---------- partner ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:22px;}
.partner-card{
  background:linear-gradient(160deg,#fff,#f4fcfb);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .25s;
}
.partner-card:hover{transform:translateY(-4px);}
.partner-card h3{font-size:16px;margin-bottom:8px;color:var(--brand-dark);}
.partner-card p{font-size:14px;color:var(--muted);}
.partner-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:linear-gradient(135deg,#0ea79b,#0a7d84);border-radius:20px;padding:26px;
  box-shadow:0 26px 48px -32px rgba(10,125,132,.9);
}
.partner-cta h3{color:#fff;font-size:19px;margin-bottom:4px;}
.partner-cta p{color:rgba(255,255,255,.9);font-size:14px;}
.partner-cta .btn{background:#fff;color:var(--brand-dark);border-color:#fff;}
.partner-cta .btn:hover{background:#eafcfa;}

/* ---------- footer ---------- */
.site-footer{background:#0b2430;color:#c6dbe2;margin-top:20px;padding:46px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;padding-bottom:32px;}
.footer-name{font-size:19px;font-weight:800;color:#ffffff;margin-bottom:10px;}
.footer-desc{font-size:13.5px;color:#a9c4ce;line-height:1.75;}
.footer-contact{font-size:13.5px;color:#a9c4ce;margin-top:10px;}
.footer-title{font-size:14px;font-weight:800;color:#ffffff;margin-bottom:12px;letter-spacing:.04em;}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:#a9c4ce;text-decoration:none;padding:4px 0;transition:color .2s;}
.footer-col a:hover{color:#63e3d5;}
.friend-links{display:flex;flex-wrap:wrap;gap:6px 0;}
.friend-links a{display:block;font-size:13.5px;color:#a9c4ce;text-decoration:none;padding:4px 0;}
.friend-links a:hover{color:#63e3d5;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:16px 20px 20px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;
}
.footer-bottom p{font-size:12.5px;color:#8fabb6;}
.footer-bottom a{color:#9fd8d2;text-decoration:none;}
.footer-bottom a:hover{color:#63e3d5;}

/* ---------- float tools ---------- */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:120;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.float-btn{
  width:48px;height:48px;border-radius:14px;border:1px solid rgba(12,80,100,.16);
  background:#fff;color:var(--brand-dark);font-size:13px;font-weight:800;font-family:inherit;
  cursor:pointer;box-shadow:0 16px 30px -18px rgba(9,70,90,.85);
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s,background .2s,color .2s;
}
.float-btn:hover{transform:translateY(-3px);background:var(--brand-soft);}
#backTop{opacity:0;pointer-events:none;transition:opacity .3s,transform .2s;}
#backTop.show{opacity:1;pointer-events:auto;}
.kefu-panel{
  width:238px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;
  box-shadow:0 30px 54px -30px rgba(9,70,90,.7);
  animation:panelIn .25s ease;
}
@keyframes panelIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.kefu-panel h3{font-size:14px;color:var(--ink);margin-bottom:8px;}
.kefu-panel img{width:100%;height:auto;border-radius:10px;display:block;background:#f2f8f9;}
.kefu-panel p{font-size:12.5px;color:var(--muted);margin-top:10px;line-height:1.7;}
.kefu-panel a{color:var(--brand-dark);text-decoration:none;font-weight:700;}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .65s cubic-bezier(.22,.8,.3,1);}
.js .reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  .js .reveal{opacity:1;transform:none;transition:none;}
  .hero-panel{animation:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:30px;}
  .hero-panel{max-width:560px;}
  .about-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .network-grid{grid-template-columns:repeat(2,1fr);}
  .wiki-grid{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .review-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex;}
  .nav{position:relative;}
  .nav-links{
    display:none;position:absolute;top:calc(100% + 14px);right:-8px;
    flex-direction:column;align-items:stretch;gap:0;
    min-width:196px;background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:8px;box-shadow:0 30px 54px -28px rgba(9,70,90,.6);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:11px 14px;font-size:14.5px;border-radius:10px;}
  .header-cta .btn{padding:9px 16px;font-size:13.5px;}
}
@media (max-width:760px){
  body{font-size:15.5px;}
  .hero{padding:44px 0 40px;}
  .section{padding:48px 0;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .solution-grid{grid-template-columns:1fr;}
  .voice-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .partner-grid{grid-template-columns:1fr;}
  .contact-list{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .partner-cta{flex-direction:column;align-items:flex-start;}
}
@media (max-width:560px){
  .header-cta .btn{display:none;}
  .brand-name{font-size:15.5px;}
  .ai-page-logo{height:30px !important;}
  .card-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .network-grid{grid-template-columns:1fr;}
  .wiki-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .float-tools{right:12px;bottom:16px;}
}