*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:#171233;
  background-color:#fbfaff;
  background-image:
    radial-gradient(900px 520px at 6% -10%, rgba(106,43,255,.18), transparent 62%),
    radial-gradient(760px 460px at 98% 0%, rgba(255,46,147,.15), transparent 60%),
    radial-gradient(900px 640px at 50% 106%, rgba(0,214,194,.14), transparent 66%),
    linear-gradient(180deg,#ffffff 0%,#faf7ff 46%,#f4efff 100%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.3px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.ai-page-logo{display:block;max-height:36px;width:auto}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(23,18,51,.09);
}
.nav-bar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:900;letter-spacing:.5px;color:#171233}
.brand-text small{font-size:11px;font-weight:600;letter-spacing:1.4px;color:#8b83b3;line-height:1.5}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{
  display:block;padding:8px 12px;border-radius:10px;
  text-decoration:none;white-space:nowrap;
  font-size:14px;font-weight:700;color:#4a4470;
  transition:color .2s ease,background-color .2s ease,transform .2s ease;
}
.nav-links a:hover{color:#6a2bff;background:rgba(106,43,255,.09);transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  padding:8px 18px;border-radius:999px;border:1.5px solid rgba(23,18,51,.15);
  background:#fff;color:#171233;font-size:14px;font-weight:800;
  font-family:inherit;cursor:pointer;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:#6a2bff;color:#6a2bff}

/* ---------- hero ---------- */
.hero{padding:58px 0 62px;scroll-margin-top:86px;position:relative;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.hero-copy{animation:riseIn .8s cubic-bezier(.22,.8,.32,1) both}
.hero-visual{animation:riseIn .8s .14s cubic-bezier(.22,.8,.32,1) both;position:relative}
@keyframes riseIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.eyebrow{
  display:inline-block;margin-bottom:16px;padding:6px 14px;border-radius:999px;
  font-size:12px;font-weight:800;letter-spacing:1.6px;color:#6a2bff;
  background:rgba(106,43,255,.1);border:1px solid rgba(106,43,255,.16);
}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);font-weight:900;letter-spacing:-1px;
  color:#171233;margin-bottom:18px;
}
.hero h1 .hl{
  background:linear-gradient(180deg,rgba(255,255,255,0) 58%,#ffd8ea 58%);
  padding:0 4px;border-radius:4px;
}
.hero-lead{font-size:16px;color:#463f6d;max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:0;cursor:pointer;
  font-family:inherit;font-size:15px;font-weight:800;text-decoration:none;
  transition:transform .22s ease,box-shadow .26s ease,background-color .22s ease,color .22s ease;
}
.btn-primary{
  color:#fff;background:linear-gradient(120deg,#6a2bff 0%,#ff2e93 100%);
  box-shadow:0 18px 32px -16px rgba(106,43,255,.85);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 24px 40px -16px rgba(255,46,147,.85)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{color:#171233;background:#fff;border:1.5px solid rgba(23,18,51,.14)}
.btn-ghost:hover{color:#6a2bff;border-color:#6a2bff;transform:translateY(-3px);box-shadow:0 18px 30px -22px rgba(106,43,255,.9)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags li{
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;
  color:#43307e;background:rgba(255,255,255,.85);border:1px solid rgba(106,43,255,.2);
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;position:relative;z-index:1}
.stat-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:20px;
  padding:20px 18px;box-shadow:0 22px 44px -32px rgba(58,26,150,.85);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(106,43,255,.4);box-shadow:0 28px 46px -30px rgba(106,43,255,.9)}
.stat-card strong{display:block;font-size:27px;font-weight:900;letter-spacing:-1px;color:#6a2bff;margin-bottom:2px}
.stat-card span{display:block;font-size:13px;font-weight:600;color:#6b6490}
.hero-halo{
  position:absolute;border-radius:50%;filter:blur(46px);opacity:.55;pointer-events:none;
}
.halo-a{width:180px;height:180px;background:#ff2e93;top:-26px;right:-16px;animation:floatA 9s ease-in-out infinite}
.halo-b{width:200px;height:200px;background:#00d6c2;bottom:-34px;left:-26px;animation:floatA 11s ease-in-out infinite reverse}
@keyframes floatA{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}

/* ---------- generic section ---------- */
.section{padding:62px 0;scroll-margin-top:86px;position:relative}
.section-head{max-width:760px;margin-bottom:30px}
.section-head h2{font-size:clamp(23px,3vw,34px);font-weight:900;color:#171233;margin-bottom:12px}
.section-head p{font-size:15px;color:#524b7a}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:26px;align-items:start}
.about-panel{
  background:linear-gradient(150deg,#ffffff 0%,#f7f2ff 100%);
  border:1px solid rgba(106,43,255,.16);border-radius:24px;padding:30px;
  box-shadow:0 26px 50px -38px rgba(58,26,150,.9);
}
.about-panel h3{font-size:19px;font-weight:900;margin-bottom:12px;color:#171233}
.about-panel p{font-size:14.5px;color:#4d4675;margin-bottom:12px}
.about-panel p:last-child{margin-bottom:0}
.about-list{display:grid;gap:12px}
.about-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid rgba(23,18,51,.09);border-radius:16px;padding:16px 18px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.about-item:hover{transform:translateX(4px);border-color:rgba(106,43,255,.35);box-shadow:0 18px 32px -26px rgba(106,43,255,.95)}
.about-item i{
  flex:0 0 auto;width:10px;height:10px;border-radius:50%;margin-top:9px;
  background:linear-gradient(135deg,#6a2bff,#ff2e93);
}
.about-item strong{display:block;font-size:15px;font-weight:800;color:#171233;margin-bottom:2px}
.about-item span{font-size:13.5px;color:#5c5583}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(252px,1fr));gap:18px;align-items:stretch}
.svc-card{
  position:relative;overflow:hidden;
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:20px;padding:22px;
  box-shadow:0 18px 34px -30px rgba(58,26,150,.9);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.svc-card::after{
  content:"";position:absolute;right:-46px;bottom:-60px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,147,.2),transparent 70%);
  opacity:0;transition:opacity .3s ease;
}
.svc-card:hover{transform:translateY(-5px);border-color:rgba(106,43,255,.35);box-shadow:0 28px 48px -30px rgba(106,43,255,.95)}
.svc-card:hover::after{opacity:1}
.svc-dot{
  display:block;width:34px;height:34px;border-radius:12px;margin-bottom:14px;
  background:linear-gradient(135deg,#6a2bff,#ff2e93);
  box-shadow:0 12px 20px -12px rgba(106,43,255,.95);
}
.svc-card:nth-child(3n+2) .svc-dot{background:linear-gradient(135deg,#00d6c2,#6a2bff)}
.svc-card:nth-child(3n+3) .svc-dot{background:linear-gradient(135deg,#ff2e93,#ffb020)}
.svc-card h3{font-size:16.5px;font-weight:900;margin-bottom:8px;color:#171233}
.svc-card p{font-size:14px;color:#554e7d}

/* ---------- features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:16px;align-items:stretch}
.feature{
  position:relative;background:#fff;border:1px solid rgba(23,18,51,.09);
  border-radius:18px;padding:20px 22px 20px 30px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.feature::before{
  content:"";position:absolute;left:12px;top:20px;bottom:20px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,#6a2bff,#ff2e93);
}
.feature:hover{transform:translateY(-4px);box-shadow:0 24px 42px -32px rgba(106,43,255,.95)}
.feature h3{font-size:16px;font-weight:900;margin-bottom:6px;color:#171233}
.feature p{font-size:13.8px;color:#554e7d}

/* ---------- solutions ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;align-items:stretch}
.sol-card{
  background:linear-gradient(160deg,#ffffff,#f8f4ff);
  border:1px solid rgba(23,18,51,.09);border-radius:20px;padding:22px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.sol-card:hover{transform:translateY(-4px);border-color:rgba(255,46,147,.35);box-shadow:0 26px 44px -32px rgba(255,46,147,.9)}
.sol-card h3{font-size:16px;font-weight:900;margin-bottom:8px;color:#171233}
.sol-card p{font-size:13.8px;color:#554e7d}

/* ---------- process ---------- */
.step-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;align-items:stretch}
.step{
  background:#fff;border:1px solid rgba(23,18,51,.09);border-radius:18px;padding:22px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(106,43,255,.35);box-shadow:0 22px 40px -30px rgba(106,43,255,.95)}
.step .num{display:block;font-size:12.5px;font-weight:900;letter-spacing:2.4px;color:#6a2bff;margin-bottom:10px}
.step h3{font-size:15.5px;font-weight:900;margin-bottom:6px;color:#171233}
.step p{font-size:13.6px;color:#554e7d}

/* ---------- network ---------- */
.region-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:14px}
.region{
  display:flex;flex-direction:column;gap:4px;
  background:#fff;border:1px solid rgba(23,18,51,.09);
  border-left:4px solid #6a2bff;border-radius:14px;padding:16px 18px;
  transition:transform .22s ease,box-shadow .22s ease,border-left-color .22s ease;
}
.region:nth-child(2n){border-left-color:#ff2e93}
.region:nth-child(3n){border-left-color:#00d6c2}
.region:hover{transform:translateY(-3px);box-shadow:0 20px 36px -30px rgba(106,43,255,.95)}
.region strong{font-size:15px;font-weight:900;color:#171233}
.region span{font-size:13.4px;color:#554e7d}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px;align-items:stretch}
.case-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:20px;overflow:hidden;
  box-shadow:0 20px 38px -34px rgba(58,26,150,.95);
  transition:transform .25s ease,box-shadow .25s ease;
}
.case-card:hover{transform:translateY(-5px);box-shadow:0 28px 48px -32px rgba(106,43,255,.95)}
.case-media{aspect-ratio:4/3;overflow:hidden;background:#f6f2ff;display:flex;align-items:center;justify-content:center}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{padding:16px 18px 18px}
.case-body h3{font-size:15.5px;font-weight:900;margin-bottom:4px;color:#171233}
.case-body p{font-size:13.4px;color:#5c5583}

/* ---------- compare ---------- */
.score-card{
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;
  background:linear-gradient(120deg,#ffffff,#f7f1ff);
  border:2px solid rgba(106,43,255,.22);border-radius:24px;padding:26px 30px;
  margin-bottom:22px;box-shadow:0 26px 50px -40px rgba(58,26,150,.95);
}
.score-main{display:flex;align-items:baseline;gap:8px}
.score-main b{font-size:52px;font-weight:900;letter-spacing:-2px;color:#6a2bff;line-height:1}
.score-main em{font-style:normal;font-size:16px;font-weight:800;color:#7d76a3}
.score-info{flex:1 1 260px;min-width:220px}
.score-info h3{font-size:18px;font-weight:900;color:#171233;margin-bottom:6px}
.score-info p{font-size:14px;color:#4d4675}
.stars{color:#ffb020;letter-spacing:3px;font-size:20px;font-weight:900}
.table-wrap{
  overflow-x:auto;border-radius:20px;border:1px solid rgba(23,18,51,.1);
  background:#fff;box-shadow:0 24px 46px -38px rgba(58,26,150,.95);
}
table{width:100%;border-collapse:collapse;min-width:680px;font-size:14.2px}
thead th{
  padding:15px 18px;text-align:left;font-weight:900;font-size:14px;color:#171233;
  background:linear-gradient(120deg,rgba(106,43,255,.12),rgba(255,46,147,.12));
  border-bottom:1px solid rgba(23,18,51,.1);white-space:nowrap;
}
tbody td{padding:14px 18px;border-bottom:1px solid rgba(23,18,51,.08);color:#4d4675;vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody td:first-child{font-weight:800;color:#171233;white-space:nowrap}
tbody .best{color:#6a2bff;font-weight:700;background:rgba(106,43,255,.055)}
tbody tr:hover td{background:rgba(255,46,147,.045)}
tbody tr:hover .best{background:rgba(106,43,255,.1)}

/* ---------- price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;align-items:stretch}
.price-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:20px;padding:24px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.price-card:hover{transform:translateY(-5px);border-color:rgba(106,43,255,.4);box-shadow:0 26px 46px -32px rgba(106,43,255,.95)}
.price-card h3{font-size:17px;font-weight:900;color:#171233}
.price-card .tag{font-size:12px;font-weight:800;letter-spacing:1.4px;color:#ff2e93}
.price-card p{font-size:13.8px;color:#554e7d}
.price-note{margin-top:18px;font-size:13.4px;color:#6b6490}

/* ---------- form ---------- */
.form-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:24px;padding:28px;
  box-shadow:0 30px 56px -42px rgba(58,26,150,.95);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.field{display:flex;flex-direction:column;gap:7px;font-size:13.6px;font-weight:800;color:#312b55}
.field.full{grid-column:1 / -1}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;
  border:1px solid rgba(23,18,51,.16);background:#fcfbff;color:#171233;
  font-family:inherit;font-size:14.4px;font-weight:500;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:#6a2bff;background:#fff;box-shadow:0 0 0 4px rgba(106,43,255,.12);
}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px}
.form-tip{font-size:13px;color:#6b6490}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:18px;align-items:stretch}
.review-card{
  display:flex;flex-direction:column;gap:12px;
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:20px;padding:22px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(255,46,147,.35);box-shadow:0 26px 44px -32px rgba(255,46,147,.9)}
.review-card .quote{font-size:14.2px;color:#463f6d;flex:1}
.review-user{display:flex;align-items:center;gap:10px;padding-top:10px;border-top:1px dashed rgba(23,18,51,.12)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:900;color:#fff;
  background:linear-gradient(135deg,#6a2bff,#ff2e93);
}
.review-user strong{display:block;font-size:14px;font-weight:900;color:#171233}
.review-user span{display:block;font-size:12.4px;color:#7d76a3}

/* ---------- help ---------- */
.help-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.help-card{
  background:#fff;border:1px solid rgba(23,18,51,.09);border-radius:18px;padding:20px;
  transition:transform .22s ease,box-shadow .22s ease
}
.help-card:hover{transform:translateY(-4px);box-shadow:0 22px 40px -32px rgba(106,43,255,.95)}
.help-card h3{font-size:15.5px;font-weight:900;margin-bottom:6px;color:#171233}
.help-card p{font-size:13.6px;color:#554e7d}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.tag-cloud li{
  padding:7px 15px;border-radius:999px;font-size:13.4px;font-weight:700;
  color:#43307e;background:#fff;border:1px solid rgba(106,43,255,.22);
  transition:transform .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tag-cloud li:hover{transform:translateY(-3px);color:#ff2e93;border-color:#ff2e93;box-shadow:0 14px 24px -18px rgba(255,46,147,.95)}
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.article-card{
  display:flex;flex-direction:column;gap:8px;text-decoration:none;
  background:#fff;border:1px solid rgba(23,18,51,.09);border-radius:18px;padding:20px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.article-card:hover{transform:translateY(-4px);border-color:rgba(106,43,255,.35);box-shadow:0 24px 40px -32px rgba(106,43,255,.95)}
.article-card strong{font-size:15.2px;font-weight:900;color:#171233}
.article-card span{font-size:13.4px;color:#554e7d}
.article-card em{font-style:normal;font-size:12.6px;font-weight:800;color:#6a2bff;letter-spacing:.6px}
.sub-head{margin:34px 0 16px;font-size:18px;font-weight:900;color:#171233}
.join-banner{
  margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 30px;border-radius:24px;
  background:linear-gradient(120deg,#241a55,#4a1d8f 48%,#8a1a63);
  box-shadow:0 28px 50px -36px rgba(36,26,85,.95);
}
.join-banner h3{font-size:19px;font-weight:900;color:#fff;margin-bottom:6px}
.join-banner p{font-size:14px;color:rgba(255,255,255,.82);max-width:640px}
.join-banner .btn{background:#fff;color:#4a1d8f;box-shadow:0 16px 30px -18px rgba(0,0,0,.6)}
.join-banner .btn:hover{transform:translateY(-3px);background:#ffe9f4;color:#8a1a63}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:16px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(106,43,255,.32)}
.faq-item.is-open{border-color:rgba(106,43,255,.42);box-shadow:0 22px 40px -34px rgba(106,43,255,.95)}
.faq-q{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:18px;
  padding:17px 20px;border:0;background:none;cursor:pointer;text-align:left;
  font-family:inherit;font-size:15.4px;font-weight:800;color:#171233;
}
.faq-q .mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:900;line-height:1;color:#6a2bff;
  background:rgba(106,43,255,.1);transition:transform .3s ease,background-color .3s ease,color .3s ease;
}
.faq-item.is-open .faq-q .mark{transform:rotate(45deg);background:#6a2bff;color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-item.is-open .faq-a{max-height:480px}
.faq-a p{padding:0 20px 18px;font-size:14px;color:#4d4675}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:start}
.contact-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:22px;padding:26px;
  box-shadow:0 26px 46px -38px rgba(58,26,150,.95);
}
.contact-card h3{font-size:18px;font-weight:900;margin-bottom:14px;color:#171233}
.contact-list{display:grid;gap:12px}
.contact-list li{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:14.2px;color:#4d4675;padding-bottom:12px;border-bottom:1px dashed rgba(23,18,51,.1)}
.contact-list li:last-child{border-bottom:0;padding-bottom:0}
.contact-list span{min-width:88px;font-weight:800;color:#171233}
.contact-list a{color:#5a2bd6;font-weight:700;text-decoration:none}
.contact-list a:hover{color:#ff2e93;text-decoration:underline}
.qr-card{
  background:#fff;border:1px solid rgba(23,18,51,.1);border-radius:22px;padding:22px;
  text-align:center;box-shadow:0 26px 46px -38px rgba(58,26,150,.95);
}
.qr-card img{
  width:100%;max-width:220px;margin:0 auto 12px;border-radius:14px;
  border:1px solid rgba(23,18,51,.1);background:#faf8ff;
}
.qr-card p{font-size:13.6px;color:#4d4675;font-weight:700}

/* ---------- footer ---------- */
.site-footer{
  margin-top:8px;padding:44px 0 24px;
  background:linear-gradient(180deg,#f7f3ff,#eee7ff);
  border-top:1px solid rgba(23,18,51,.1);
  color:#2a2450;
}
.footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
.footer-brand .ai-page-logo{margin-bottom:12px}
.footer-brand p{font-size:13.8px;color:#3d3670;margin-bottom:6px}
.footer-brand a{color:#5a2bd6;font-weight:700;text-decoration:none}
.footer-brand a:hover{color:#ff2e93;text-decoration:underline}
.footer-links h3{font-size:15px;font-weight:900;color:#171233;margin-bottom:12px}
.footer-links ul{display:flex;flex-wrap:wrap;gap:10px 18px}
.footer-links a{font-size:13.6px;font-weight:700;color:#3d3670;text-decoration:none;transition:color .2s ease}
.footer-links a:hover{color:#6a2bff;text-decoration:underline}
.footer-bottom{
  margin-top:26px;padding-top:16px;border-top:1px solid rgba(23,18,51,.12);
  font-size:13px;color:#4d4675;
}

/* ---------- floats ---------- */
.float-stack{position:fixed;right:18px;bottom:22px;z-index:70;display:flex;flex-direction:column;gap:10px}
.float-btn{
  display:flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:16px;border:0;cursor:pointer;
  font-family:inherit;font-size:12px;font-weight:900;letter-spacing:1px;
  color:#fff;text-decoration:none;
  background:linear-gradient(135deg,#6a2bff,#ff2e93);
  box-shadow:0 16px 30px -16px rgba(106,43,255,.95);
  transition:transform .22s ease,box-shadow .22s ease,opacity .22s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 22px 36px -16px rgba(255,46,147,.95)}
.float-btn.ghost{background:#fff;color:#43307e;border:1.5px solid rgba(23,18,51,.14);opacity:0;pointer-events:none;box-shadow:0 16px 26px -20px rgba(23,18,51,.7)}
.float-btn.ghost.is-show{opacity:1;pointer-events:auto}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .66s cubic-bezier(.22,.8,.32,1),transform .66s cubic-bezier(.22,.8,.32,1)}
.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero-copy,.hero-visual,.halo-a,.halo-b{animation:none}
  *{transition-duration:.01ms !important}
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid rgba(23,18,51,.1);
    box-shadow:0 30px 42px -32px rgba(23,18,51,.6);
    padding:10px 12px 16px;display:none;
  }
  .nav-links.is-open{display:flex;animation:navDrop .26s ease both}
  .nav-links a{padding:12px 14px;font-size:15px}
  @keyframes navDrop{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
}
@media (max-width:720px){
  body{font-size:15.5px}
  .hero{padding:42px 0 48px}
  .section{padding:46px 0}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .score-card{padding:22px}
  .score-main b{font-size:44px}
  .join-banner{padding:22px}
  .float-stack{right:12px;bottom:16px}
  .float-btn{width:46px;height:46px;border-radius:14px;font-size:11px}
  .about-panel{padding:22px}
}