*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;background:#f6f8ff}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:#0f1830;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(880px 520px at 6% -8%,rgba(59,91,255,.20),transparent 62%),
    radial-gradient(820px 520px at 96% 2%,rgba(255,92,138,.17),transparent 64%),
    radial-gradient(760px 620px at 50% 58%,rgba(19,192,165,.11),transparent 68%),
    linear-gradient(180deg,#f4f7ff 0%,#fbfcff 45%,#f4f8ff 100%);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.3px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:min(1160px,calc(100% - 44px));margin-inline:auto}
@media (max-width:640px){.wrap{width:calc(100% - 32px)}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(19,32,58,.08);
}
.head-inner{position:relative;display:flex;align-items:center;gap:14px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.ai-page-logo{display:block;max-height:36px;max-width:150px;width:auto;height:auto}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.4px;white-space:nowrap;color:#0b1226}
.nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-links{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap}
.nav-links a{display:block;padding:8px 9px;border-radius:10px;font-size:14px;color:#2c3650;text-decoration:none;transition:color .2s ease,background .2s ease}
.nav-links a:hover,.nav-links a:focus-visible{color:#3b5bff;background:rgba(59,91,255,.09)}
.head-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-size:14.5px;font-weight:600;
  padding:11px 20px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(120deg,#3b5bff,#7b4dff 52%,#ff5c8a);color:#fff;box-shadow:0 16px 32px -18px rgba(76,80,255,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 24px 40px -18px rgba(76,80,255,.85);color:#fff}
.btn-ghost{background:#fff;color:#0f1830;border-color:rgba(19,32,58,.14)}
.btn-ghost:hover{color:#3b5bff;border-color:rgba(59,91,255,.45);transform:translateY(-2px)}
.btn-lg{padding:14px 30px;font-size:16px}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid rgba(19,32,58,.14);background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0f1830;position:relative;transition:.25s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#0f1830;transition:.25s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero{padding:64px 0 44px}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:#3b5bff;
  background:rgba(59,91,255,.09);border:1px solid rgba(59,91,255,.2);
  padding:7px 15px;border-radius:999px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(120deg,#3b5bff,#ff5c8a);flex:0 0 auto}
h1{font-size:clamp(29px,4.2vw,48px);line-height:1.22;margin:20px 0 18px;font-weight:800;letter-spacing:-1px;color:#0b1226}
.hero-lead{font-size:clamp(15px,1.5vw,16.5px);color:#4c5772;max-width:610px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags li{font-size:13.5px;color:#3d4864;background:rgba(255,255,255,.9);border:1px solid rgba(19,32,58,.1);padding:6px 14px;border-radius:999px}
.hero-copy{animation:riseIn .75s ease both}
.hero-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,rgba(255,255,255,.97),rgba(255,255,255,.85));
  border:1px solid rgba(255,255,255,.95);border-radius:28px;padding:26px;
  box-shadow:0 40px 80px -52px rgba(23,37,90,.65),0 0 0 1px rgba(59,91,255,.06);
  animation:riseIn .75s .12s ease both;
}
.hero-panel::after{
  content:"";position:absolute;right:-40px;top:-46px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,92,138,.34),transparent 70%);filter:blur(8px);pointer-events:none;
}
.panel-top{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:#0b1226;margin-bottom:18px}
.panel-dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,#3b5bff,#13c0a5);box-shadow:0 0 0 4px rgba(59,91,255,.12)}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative}
.stat{background:rgba(244,247,255,.92);border:1px solid rgba(19,32,58,.07);border-radius:16px;padding:16px}
.stat strong{display:block;font-size:23px;line-height:1.15;font-weight:800;color:#0b1226;letter-spacing:-.5px}
.stat span{display:block;font-size:13px;color:#5b6579;margin-top:5px}
@keyframes riseIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* ---------- section ---------- */
.section{padding:56px 0}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.6vw,31px);margin:12px 0 12px;letter-spacing:-.6px;color:#0b1226}
.section-head p{color:#5b6579;max-width:800px;font-size:15.5px}

/* ---------- grid & card ---------- */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{
  background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:20px;padding:22px;
  box-shadow:0 18px 36px -32px rgba(15,24,48,.6);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(59,91,255,.3);box-shadow:0 30px 50px -34px rgba(23,37,90,.55)}
.card h3{font-size:16.5px;margin-bottom:8px;display:flex;align-items:center;gap:9px;color:#0b1226}
.card h3::before{content:"";width:8px;height:8px;border-radius:3px;background:linear-gradient(135deg,#3b5bff,#ff5c8a);flex:0 0 auto}
.card p{font-size:14px;color:#5b6579;line-height:1.75}
.svc-card{background:linear-gradient(160deg,#fff,rgba(245,248,255,.96))}

/* ---------- about ---------- */
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:24px}
.about-media img{width:100%;border-radius:18px;border:1px solid rgba(19,32,58,.1);background:#fff}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.step{
  background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:18px;padding:22px 18px;
  box-shadow:0 18px 36px -34px rgba(15,24,48,.6);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(59,91,255,.3);box-shadow:0 28px 46px -34px rgba(23,37,90,.55)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;
  background:linear-gradient(135deg,#3b5bff,#7b4dff);color:#fff;font-weight:700;font-size:14px;margin-bottom:14px;
}
.step h3{font-size:15.5px;margin-bottom:8px;color:#0b1226}
.step p{font-size:13.5px;color:#5b6579}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid rgba(19,32,58,.1);border-radius:18px;background:#fff;
  box-shadow:0 20px 40px -36px rgba(15,24,48,.6);
}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:14px}
thead th{
  background:linear-gradient(120deg,rgba(59,91,255,.11),rgba(255,92,138,.09));
  color:#0b1226;font-weight:700;text-align:left;padding:14px 16px;white-space:nowrap;
}
tbody td{padding:14px 16px;border-top:1px solid rgba(19,32,58,.07);color:#3d4864;vertical-align:top}
tbody tr{transition:background .2s ease}
tbody tr:hover{background:rgba(59,91,255,.045)}
td.hl{color:#3b5bff;font-weight:700}
.table-note{margin-top:14px;font-size:13px;color:#6b7590}

/* ---------- rating ---------- */
.rating-card{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;
  background:linear-gradient(130deg,#141c3a,#2a2260 55%,#3a1f57);
  color:#fff;border-radius:24px;padding:30px;margin-bottom:24px;
}
.rating-card::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,92,138,.45),transparent 70%);pointer-events:none;
}
.rating-score{font-size:clamp(38px,6vw,56px);font-weight:800;line-height:1;letter-spacing:-2px;color:#fff}
.rating-score small{font-size:15px;font-weight:500;letter-spacing:0;color:rgba(255,255,255,.72);margin-left:6px}
.rating-meta{position:relative;z-index:1}
.stars{color:#ffc94d;letter-spacing:4px;font-size:20px;line-height:1.2}
.rating-meta p{color:rgba(255,255,255,.78);font-size:14px;margin-top:8px;max-width:620px}

/* ---------- reviews ---------- */
.review{display:flex;flex-direction:column;gap:14px}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:15px;background:linear-gradient(135deg,#3b5bff,#ff5c8a);
}
.review-name{font-weight:700;font-size:14.5px;color:#0b1226}
.review-role{font-size:12.5px;color:#6b7590}
.review-text{font-size:14px;color:#3d4864}

/* ---------- network ---------- */
.net-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:20px}
.net-list li{
  text-align:center;background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:14px;
  padding:14px 10px;font-size:14px;font-weight:600;color:#28324a;
  transition:transform .25s ease,border-color .25s ease,color .25s ease;
}
.net-list li:hover{transform:translateY(-3px);border-color:rgba(59,91,255,.35);color:#3b5bff}

/* ---------- cases ---------- */
.case-media{
  border-radius:16px;overflow:hidden;margin-bottom:16px;
  background:linear-gradient(135deg,#eef3ff,#f9f5ff);
  aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;
}
.case-media img{max-width:100%;max-height:100%;object-fit:contain;display:block}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px}
details.faq{
  background:#fff;border:1px solid rgba(19,32,58,.1);border-radius:16px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
details.faq[open]{border-color:rgba(59,91,255,.35);box-shadow:0 22px 40px -34px rgba(23,37,90,.6)}
details.faq summary{
  cursor:pointer;list-style:none;position:relative;
  padding:16px 52px 16px 20px;font-weight:600;font-size:15px;color:#0b1226;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid #3b5bff;border-bottom:2px solid #3b5bff;
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
}
details.faq[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-body{padding:0 20px 18px;color:#5b6579;font-size:14.5px}

/* ---------- form ---------- */
.form-card{
  background:#fff;border:1px solid rgba(19,32,58,.1);border-radius:24px;padding:28px;
  box-shadow:0 30px 60px -48px rgba(23,37,90,.55);
}
.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:13.5px;font-weight:600;color:#28324a}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14.5px;color:#0f1830;
  background:#f8faff;border:1px solid rgba(19,32,58,.14);border-radius:12px;
  padding:11px 14px;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:#3b5bff;background:#fff;box-shadow:0 0 0 4px rgba(59,91,255,.12);
}
.field textarea{min-height:120px;resize:vertical}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:4px}
.form-tip{font-size:13px;color:#6b7590}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:start}
.contact-list{display:grid;gap:14px}
.contact-item{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:16px;padding:16px 18px;
  transition:transform .25s ease,border-color .25s ease;
}
.contact-item:hover{transform:translateY(-3px);border-color:rgba(59,91,255,.3)}
.contact-label{font-size:12.5px;color:#6b7590;display:block}
.contact-value{font-size:14.5px;font-weight:600;color:#0b1226;text-decoration:none;word-break:break-all}
.contact-value:hover{color:#3b5bff}
.qr-card{
  background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:20px;padding:20px;text-align:center;
  box-shadow:0 20px 40px -36px rgba(15,24,48,.6);
}
.qr-box{display:flex;align-items:center;justify-content:center;background:#f7f9ff;border-radius:14px;padding:14px;margin-bottom:12px}
.qr-box img{max-width:200px;width:100%;height:auto;border-radius:8px}
.qr-card p{font-size:13px;color:#5b6579}

/* ---------- join ---------- */
.join-card{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(59,91,255,.12),rgba(255,92,138,.12) 55%,rgba(19,192,165,.14));
  border:1px solid rgba(59,91,255,.22);border-radius:26px;padding:34px;
}
.join-card h2{font-size:clamp(21px,2.6vw,29px);margin-bottom:12px;color:#0b1226}
.join-card p{color:#3d4864;max-width:760px;font-size:15px}
.join-points{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 24px}
.join-points li{
  background:rgba(255,255,255,.9);border:1px solid rgba(19,32,58,.1);
  border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:600;color:#28324a;
}

/* ---------- articles & tags ---------- */
.article-list{display:grid;gap:12px}
.article-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid rgba(19,32,58,.09);border-radius:16px;padding:16px 18px;
  text-decoration:none;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.article-item:hover{transform:translateY(-3px);border-color:rgba(59,91,255,.3);box-shadow:0 22px 40px -34px rgba(23,37,90,.55)}
.article-item strong{font-size:14.5px;color:#0b1226;font-weight:600}
.article-arrow{font-size:13px;color:#3b5bff;font-weight:700;white-space:nowrap}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud span{
  font-size:13px;color:#3d4864;background:#fff;border:1px solid rgba(19,32,58,.1);
  border-radius:999px;padding:7px 15px;transition:color .22s ease,border-color .22s ease,transform .22s ease;
}
.tag-cloud span:hover{color:#3b5bff;border-color:rgba(59,91,255,.4);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{
  background:linear-gradient(165deg,#111a33,#1a2350);
  color:#c6cfe8;padding:46px 0 24px;
}
.site-footer a{color:#dfe6fb;text-decoration:none;transition:color .2s ease}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1.3fr;gap:32px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:13.5px;color:#aab6d6;line-height:1.8;max-width:420px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13.5px}
.footer-col .footer-links a{color:#c6cfe8}
.footer-col .footer-links a:hover{color:#fff}
.footer-contact{font-size:13.5px;color:#aab6d6;line-height:1.9}
.footer-contact a{color:#dfe6fb}
.footer-bottom{
  margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:13px;color:#98a4c6;
}

/* ---------- float ---------- */
.float-tools{position:fixed;right:18px;bottom:22px;display:flex;flex-direction:column;gap:10px;z-index:70}
.float-btn{
  width:48px;height:48px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid rgba(19,32,58,.12);color:#3b5bff;cursor:pointer;
  box-shadow:0 16px 30px -18px rgba(23,37,90,.6);text-decoration:none;font-size:12px;font-weight:700;
  transition:transform .22s ease,box-shadow .22s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 22px 36px -18px rgba(23,37,90,.7)}
.float-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
#toTop{opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease}
#toTop.show{opacity:1;pointer-events:auto}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;display:none;
    background:#fff;border:1px solid rgba(19,32,58,.08);border-radius:18px;
    box-shadow:0 30px 60px -30px rgba(15,24,48,.45);padding:10px;z-index:70;
  }
  .nav.open{display:block;animation:navIn .22s ease}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{padding:11px 14px;border-radius:12px}
  .nav-toggle{display:inline-flex}
  .head-actions .btn-ghost{display:none}
}
@keyframes navIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .hero{padding:44px 0 34px}
  .section{padding:44px 0}
  .grid-2{grid-template-columns:1fr}
  .about-media{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:26px}
}
@media (max-width:600px){
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .rating-card{padding:24px}
  .join-card{padding:24px}
  .brand-text{display:none}
  .head-actions .btn-primary{padding:10px 16px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}