*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:#0b1030;
  background-color:#f5f7fe;
  background-image:
    radial-gradient(680px 420px at 8% 0%,rgba(0,200,255,.16),transparent 68%),
    radial-gradient(600px 420px at 94% 3%,rgba(255,63,180,.12),transparent 68%),
    radial-gradient(860px 560px at 50% 88%,rgba(91,75,255,.12),transparent 72%),
    linear-gradient(180deg,#f8f9ff 0%,#f1f3fd 46%,#f8f9ff 100%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.4px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
section{padding:72px 0;position:relative}
.section-head{max-width:780px;margin:0 auto 38px;text-align:center}
.section-head h2{font-size:clamp(23px,3.1vw,32px);line-height:1.34;margin-bottom:12px}
.section-head p{color:#5b6488;font-size:15.5px}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(91,75,255,.08);
  border:1px solid rgba(91,75,255,.22);
  color:#4b3fe0;font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:14px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1.4;text-decoration:none;
  border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{
  background:linear-gradient(120deg,#5b4bff,#00a8ff);
  color:#ffffff;
  box-shadow:0 10px 24px rgba(91,75,255,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(91,75,255,.42)}
.btn-ghost{background:#ffffff;color:#0b1030;border-color:rgba(11,16,48,.14)}
.btn-ghost:hover{transform:translateY(-2px);border-color:#5b4bff;color:#4b3fe0;box-shadow:0 12px 26px rgba(23,32,90,.12)}
.btn-lg{padding:15px 32px;font-size:16px}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(11,16,48,.09);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.ai-page-logo{max-height:38px;width:auto;display:block}
.brand-name{font-size:17px;font-weight:800;letter-spacing:1px;color:#0b1030;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{
  display:block;padding:8px 11px;font-size:14px;color:#232a52;text-decoration:none;
  border-radius:8px;white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:#4b3fe0;background:rgba(91,75,255,.08)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:40px;height:40px;padding:0 9px;border-radius:10px;
  background:#ffffff;border:1px solid rgba(11,16,48,.14);cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:#0b1030;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.header-cta{flex:0 0 auto;padding:10px 20px;font-size:14px}

/* hero */
.hero{padding:56px 0 64px}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.9);
  border:1px solid rgba(91,75,255,.25);
  color:#4b3fe0;font-size:13px;font-weight:700;letter-spacing:.6px;margin-bottom:20px;
  box-shadow:0 8px 20px rgba(91,75,255,.12);
}
.hero-badge::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:linear-gradient(120deg,#00c8ff,#5b4bff);
  box-shadow:0 0 0 4px rgba(91,75,255,.14);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(28px,4.1vw,44px);line-height:1.26;margin-bottom:18px}
.hero-sub{color:#4a5378;font-size:16.5px;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags li{
  padding:7px 14px;border-radius:999px;font-size:13px;color:#2a3160;
  background:#ffffff;border:1px solid rgba(11,16,48,.1);
  box-shadow:0 6px 16px rgba(23,32,90,.06);
  transition:transform .22s ease,border-color .22s ease,color .22s ease;
}
.hero-tags li:hover{transform:translateY(-2px);border-color:rgba(91,75,255,.45);color:#4b3fe0}
.hero-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#ffffff,#f3f6ff);
  border:1px solid rgba(91,75,255,.24);
  border-radius:22px;padding:26px 24px;
  box-shadow:0 24px 60px rgba(43,52,130,.14);
  animation:floaty 6.5s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero-panel::after{
  content:"";position:absolute;top:-70px;right:-70px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,200,255,.4),transparent 70%);pointer-events:none;
}
.panel-head{
  display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:800;letter-spacing:1.4px;color:#4b3fe0;
  padding-bottom:16px;margin-bottom:6px;border-bottom:1px dashed rgba(11,16,48,.14);
}
.panel-head .dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(120deg,#5b4bff,#ff3fb4)}
.pipeline li{
  position:relative;display:flex;flex-direction:column;gap:2px;
  padding:14px 0 14px 26px;border-left:2px solid rgba(91,75,255,.18);margin-left:6px;
}
.pipeline li:last-child{border-left-color:transparent}
.pipe-dot{
  position:absolute;left:-7px;top:20px;width:12px;height:12px;border-radius:50%;
  background:#ffffff;border:2px solid #5b4bff;box-shadow:0 0 0 4px rgba(91,75,255,.1);
}
.pipeline b{font-size:15px;color:#0b1030}
.pipeline em{font-style:normal;font-size:13px;color:#5b6488}

/* stats */
.stats-section{padding:0 0 24px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
  position:relative;overflow:hidden;
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:16px;
  padding:22px 20px;box-shadow:0 12px 30px rgba(23,32,90,.07);
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(120deg,#5b4bff,#00c8ff,#ff3fb4)}
.stat-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(23,32,90,.14)}
.stat-card b{display:block;font-size:27px;line-height:1.25;color:#4b3fe0;font-weight:800}
.stat-card span{font-size:14px;color:#5b6488}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about-copy h2{font-size:clamp(23px,3vw,32px);line-height:1.34;margin-bottom:16px}
.about-copy p{color:#4a5378;font-size:15.5px;margin-bottom:14px}
.text-link{display:inline-block;margin-top:6px;color:#4b3fe0;font-weight:700;text-decoration:none;font-size:15px;border-bottom:2px solid rgba(91,75,255,.35);padding-bottom:2px}
.text-link:hover{border-bottom-color:#4b3fe0}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.point{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:14px;padding:18px;
  box-shadow:0 10px 26px rgba(23,32,90,.06);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point:hover{transform:translateY(-3px);border-color:rgba(91,75,255,.4);box-shadow:0 16px 34px rgba(23,32,90,.12)}
.point h3{font-size:15.5px;margin-bottom:6px;color:#0b1030}
.point p{font-size:13.5px;color:#5b6488;line-height:1.65}

/* services */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc-card{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:18px;padding:26px 24px;
  box-shadow:0 12px 30px rgba(23,32,90,.07);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.svc-card:hover{transform:translateY(-5px);box-shadow:0 22px 46px rgba(23,32,90,.15);border-color:rgba(91,75,255,.35)}
.svc-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#5b4bff,#00c8ff);margin-bottom:16px;
  box-shadow:0 10px 22px rgba(91,75,255,.3);
}
.svc-card h3{font-size:17px;margin-bottom:8px}
.svc-card p{font-size:14px;color:#5b6488;line-height:1.7}

/* studio scenes */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.scene{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:14px;padding:16px 18px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(23,32,90,.12);border-color:rgba(91,75,255,.38)}
.scene h3{font-size:15px;display:flex;align-items:center;gap:8px;margin-bottom:5px}
.scene h3::before{content:"";width:7px;height:7px;border-radius:50%;flex:0 0 auto;background:linear-gradient(120deg,#5b4bff,#ff3fb4)}
.scene p{font-size:13px;color:#5b6488;line-height:1.6}

/* solutions */
.solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.solution{
  position:relative;
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:16px;
  padding:22px 24px 22px 26px;
  box-shadow:0 10px 26px rgba(23,32,90,.06);
  transition:transform .22s ease,box-shadow .22s ease;
}
.solution::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:4px;background:linear-gradient(180deg,#5b4bff,#00c8ff)}
.solution:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(23,32,90,.13)}
.solution h3{font-size:16.5px;margin-bottom:7px}
.solution p{font-size:14px;color:#5b6488;line-height:1.7}

/* network */
.network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net-card{
  background:linear-gradient(170deg,#ffffff,#f4f7ff);
  border:1px solid rgba(91,75,255,.18);border-radius:16px;padding:22px 20px;
  box-shadow:0 12px 28px rgba(23,32,90,.07);
  transition:transform .22s ease,box-shadow .22s ease;
}
.net-card:hover{transform:translateY(-4px);box-shadow:0 20px 42px rgba(23,32,90,.14)}
.net-label{display:inline-block;font-size:12px;font-weight:800;letter-spacing:1px;color:#4b3fe0;background:rgba(91,75,255,.1);border-radius:999px;padding:3px 10px;margin-bottom:12px}
.net-card h3{font-size:15.5px;margin-bottom:6px}
.net-card p{font-size:13.5px;color:#5b6488;line-height:1.65}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{
  position:relative;
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:16px;padding:24px;
  box-shadow:0 12px 28px rgba(23,32,90,.06);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(91,75,255,.35);box-shadow:0 20px 42px rgba(23,32,90,.13)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;margin-bottom:14px;
  background:linear-gradient(135deg,#5b4bff,#00c8ff);color:#ffffff;font-size:14px;font-weight:800;
  box-shadow:0 8px 18px rgba(91,75,255,.3);
}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:13.8px;color:#5b6488;line-height:1.7}

/* cases */
.case-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.case-item{margin:0;background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:18px;padding:12px;box-shadow:0 12px 30px rgba(23,32,90,.07);transition:transform .25s ease,box-shadow .25s ease}
.case-item:hover{transform:translateY(-4px);box-shadow:0 22px 46px rgba(23,32,90,.15)}
.case-item.wide{grid-column:span 3}
.case-item.small{grid-column:span 2}
.case-media{
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  border-radius:12px;padding:8px;
  background:linear-gradient(150deg,#eef1ff,#e7f7ff);
}
.wide .case-media{aspect-ratio:16/9}
.small .case-media{aspect-ratio:1/1}
.case-media img{width:100%;height:100%;object-fit:contain;display:block;border-radius:8px}
.case-item figcaption{padding:12px 6px 4px;display:flex;flex-direction:column;gap:2px}
.case-item b{font-size:14.5px;color:#0b1030}
.case-item span{font-size:13px;color:#5b6488}

/* review */
.review-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:start}
.rating-card{
  position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(165deg,#ffffff,#f2f5ff);
  border:1px solid rgba(91,75,255,.25);border-radius:20px;padding:30px 24px;
  box-shadow:0 20px 48px rgba(43,52,130,.12);
}
.rating-card::before{content:"";position:absolute;top:-60px;right:-60px;width:170px;height:170px;border-radius:50%;background:radial-gradient(circle,rgba(255,63,180,.28),transparent 70%)}
.rating-score{font-size:52px;line-height:1.1;font-weight:800;color:#4b3fe0}
.rating-score span{font-size:18px;color:#5b6488;font-weight:600}
.stars{font-size:22px;letter-spacing:4px;color:#ffb300;margin:10px 0 6px}
.rating-card p{font-size:14px;color:#5b6488}
.rating-card strong{display:block;margin-top:6px;font-size:15px;color:#0b1030}
.table-wrap{
  overflow-x:auto;
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:18px;
  box-shadow:0 16px 38px rgba(23,32,90,.08);
}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
thead th{background:#f1f4ff;color:#0b1030;font-weight:800;font-size:14px;text-align:left}
th,td{padding:14px 18px;border-bottom:1px solid rgba(11,16,48,.07);vertical-align:top;line-height:1.6}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody tr:hover{background:#fafbff}
td:first-child,th:first-child{font-weight:700;color:#0b1030;white-space:nowrap}
.col-best{color:#3a2fd8;font-weight:700;background:rgba(91,75,255,.05)}

/* token */
.token-note{
  margin-top:18px;font-size:14px;color:#4a5378;
  background:#ffffff;border:1px dashed rgba(91,75,255,.35);border-radius:14px;padding:16px 20px;
}
.token-note strong{color:#4b3fe0}

/* comments */
.comment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.comment{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:18px;padding:24px;
  box-shadow:0 12px 30px rgba(23,32,90,.07);display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.comment:hover{transform:translateY(-4px);border-color:rgba(91,75,255,.32);box-shadow:0 22px 46px rgba(23,32,90,.14)}
.comment p{font-size:14.3px;color:#39406a;line-height:1.75}
.comment-user{display:flex;align-items:center;gap:12px;border-top:1px solid rgba(11,16,48,.07);padding-top:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#5b4bff,#00c8ff);color:#ffffff;font-weight:800;font-size:15px;
}
.comment-user b{display:block;font-size:14.5px;color:#0b1030}
.comment-user span{font-size:12.5px;color:#5b6488}

/* help + faq */
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:26px}
.help-item{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:14px;padding:18px;
  box-shadow:0 10px 24px rgba(23,32,90,.06);
  transition:transform .22s ease,box-shadow .22s ease;
}
.help-item:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(23,32,90,.12)}
.help-item h3{font-size:15px;margin-bottom:5px}
.help-item p{font-size:13px;color:#5b6488;line-height:1.6}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
.faq-item{background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:14px;overflow:hidden;box-shadow:0 10px 24px rgba(23,32,90,.05)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;background:none;border:0;font:inherit;font-weight:700;font-size:14.8px;color:#0b1030;
  cursor:pointer;text-align:left;transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:#4b3fe0;background:rgba(91,75,255,.04)}
.faq-icon{
  position:relative;flex:0 0 auto;width:18px;height:18px;border-radius:50%;
  border:1.5px solid rgba(91,75,255,.5);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:#4b3fe0;border-radius:1px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:4px;right:4px;top:7.5px;height:1.6px}
.faq-icon::after{top:4px;bottom:4px;left:7.7px;width:1.6px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 20px 18px;font-size:14px;color:#5b6488;line-height:1.72}
.faq-item.open .faq-q{color:#4b3fe0}

/* articles */
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.article{
  display:flex;align-items:flex-start;gap:14px;
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:14px;padding:18px 20px;
  text-decoration:none;box-shadow:0 10px 24px rgba(23,32,90,.05);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.article:hover{transform:translateY(-3px);border-color:rgba(91,75,255,.35);box-shadow:0 16px 36px rgba(23,32,90,.12)}
.article-idx{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,#5b4bff,#00c8ff);color:#ffffff;
  font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.article-body b{display:block;font-size:14.8px;color:#0b1030;margin-bottom:3px;line-height:1.55}
.article-body span{font-size:13px;color:#5b6488;line-height:1.6}

/* join */
.join-card{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,#ffffff,#f1f4ff);
  border:1px solid rgba(91,75,255,.25);border-radius:22px;padding:38px 34px;
  box-shadow:0 22px 52px rgba(43,52,130,.12);
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
}
.join-card::before{content:"";position:absolute;left:-80px;bottom:-90px;width:230px;height:230px;border-radius:50%;background:radial-gradient(circle,rgba(0,200,255,.3),transparent 70%)}
.join-copy h2{font-size:clamp(22px,2.8vw,30px);line-height:1.34;margin-bottom:12px}
.join-copy p{font-size:15px;color:#4a5378;margin-bottom:18px}
.join-list{display:grid;gap:10px}
.join-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#232a52}
.join-list li::before{
  content:"";flex:0 0 auto;margin-top:8px;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(120deg,#5b4bff,#00c8ff);
}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.3fr .8fr;gap:24px;align-items:start}
.form-card{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:20px;padding:30px;
  box-shadow:0 18px 42px rgba(23,32,90,.08);
}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card > p{font-size:14px;color:#5b6488;margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:700;color:#232a52}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14.5px;color:#0b1030;
  padding:12px 14px;border-radius:12px;
  border:1px solid rgba(11,16,48,.16);background:#fbfcff;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#5b4bff;background:#ffffff;
  box-shadow:0 0 0 4px rgba(91,75,255,.14);
}
.field input::placeholder,.field textarea::placeholder{color:#98a0bd}
.contact-side{
  display:flex;flex-direction:column;gap:16px;
}
.qr-card{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:20px;padding:24px;
  box-shadow:0 18px 42px rgba(23,32,90,.08);text-align:center;
}
.qr-card img{width:100%;max-width:170px;height:auto;display:block;margin:0 auto 12px;border-radius:12px;border:1px solid rgba(11,16,48,.08)}
.qr-card p{font-size:13.5px;color:#5b6488}
.contact-info{
  background:#ffffff;border:1px solid rgba(11,16,48,.09);border-radius:20px;padding:22px 24px;
  box-shadow:0 18px 42px rgba(23,32,90,.08);
}
.contact-info dl{margin:0;display:grid;gap:12px}
.contact-info dt{font-size:12.5px;color:#5b6488;letter-spacing:.5px}
.contact-info dd{margin:2px 0 0;font-size:14.5px;color:#0b1030;font-weight:600;word-break:break-all}

/* footer */
.site-footer{background:#0b1030;color:#c6cdec;padding:48px 0 22px;margin-top:8px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .ai-page-logo{max-height:36px;margin-bottom:14px}
.footer-desc{font-size:14px;color:#a9b1d6;line-height:1.75;margin-bottom:10px}
.footer-contact{font-size:14px;color:#dfe4ff}
.footer-col h4{font-size:14.5px;color:#ffffff;margin-bottom:14px;letter-spacing:.6px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:13.8px;color:#b9c1e6;text-decoration:none;transition:color .2s ease}
.footer-col a:hover{color:#6ee6ff}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 14px}
.friend-links li{width:calc(50% - 7px)}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:#9aa2c8;
}

/* floating */
.float-tools{position:fixed;right:16px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:60}
.float-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(91,75,255,.28);
  background:#ffffff;color:#4b3fe0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(23,32,90,.18);
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.float-btn:hover{transform:translateY(-2px);background:#5b4bff;color:#ffffff}
.float-btn svg{display:block}
.service-pop{
  position:fixed;right:74px;bottom:20px;width:232px;z-index:61;
  background:#ffffff;border:1px solid rgba(11,16,48,.1);border-radius:18px;padding:18px 16px;
  box-shadow:0 24px 54px rgba(23,32,90,.22);display:none;text-align:center;
}
.service-pop.open{display:block;animation:rise .28s ease both}
.service-pop img{width:100%;max-width:160px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;border:1px solid rgba(11,16,48,.08)}
.service-pop p{font-size:13px;color:#5b6488}
.pop-line{font-size:13px;color:#232a52;font-weight:600;margin-top:4px}
.pop-close{
  position:absolute;top:6px;right:8px;width:26px;height:26px;border-radius:50%;
  border:0;background:rgba(11,16,48,.06);color:#0b1030;font-size:16px;line-height:1;cursor:pointer;
}
.pop-close:hover{background:rgba(11,16,48,.14)}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.reveal-in{animation:rise .62s ease both}

/* responsive */
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#ffffff;border-bottom:1px solid rgba(11,16,48,.1);
    box-shadow:0 18px 32px rgba(23,32,90,.14);
    padding:8px 20px 14px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 6px;border-bottom:1px solid rgba(11,16,48,.06);font-size:14.5px}
  .nav-links li:last-child a{border-bottom:0}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .about-grid{grid-template-columns:1fr;gap:28px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(3,1fr)}
  .network-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .review-wrap{grid-template-columns:1fr}
  .comment-grid{grid-template-columns:repeat(2,1fr)}
  .help-grid{grid-template-columns:repeat(2,1fr)}
  .faq-list{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .join-card{grid-template-columns:1fr;gap:22px}
  .footer-top{grid-template-columns:1fr 1fr;gap:26px}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  section{padding:52px 0}
  .hero{padding:40px 0 48px}
  .svc-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr 1fr}
  .solution-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .comment-grid{grid-template-columns:1fr}
  .article-list{grid-template-columns:1fr}
  .case-item.wide,.case-item.small{grid-column:span 6}
  .small .case-media{aspect-ratio:16/9}
  .form-grid{grid-template-columns:1fr}
  .header-cta{padding:9px 16px;font-size:13px}
  .brand-name{font-size:16px}
  .friend-links li{width:100%}
}
@media (max-width:640px){
  .header-cta{display:none}
  .hero-actions{gap:10px}
  .btn-lg{padding:13px 24px;font-size:15px}
  .hero-tags li{font-size:12.5px;padding:6px 12px}
  .stats{grid-template-columns:1fr}
  .about-points{grid-template-columns:1fr}
  .help-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .network-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .service-pop{right:16px;bottom:78px;width:calc(100% - 32px);max-width:260px}
}
@media (prefers-reduced-motion:reduce){
  .hero-panel{animation:none}
  .hero-badge::before{animation:none}
  .reveal-in{animation:none}
  html{scroll-behavior:auto}
}