:root{
  --ink:#0d1230;
  --ink2:#333d69;
  --muted:#5c6590;
  --violet:#6a5cff;
  --violet-deep:#4b32c7;
  --magenta:#ff4ecd;
  --cyan:#22d3ee;
  --bg:#f6f7ff;
  --line:rgba(106,92,255,.15);
  --shadow-s:0 12px 30px -22px rgba(58,45,150,.6);
  --shadow-m:0 20px 44px -28px rgba(58,45,150,.66);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
  background-color:var(--bg);
  background-image:linear-gradient(180deg,#f5f6ff 0%,#eef0ff 42%,#f7f8ff 100%);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%}
a{color:var(--violet-deep)}
button{font-family:inherit}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.ai-page-logo{display:block;max-height:38px;width:auto;max-width:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;letter-spacing:.6px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:1.6px;color:var(--muted)}
.nav{flex:1;display:flex;justify-content:center}
.nav-links{display:flex;gap:0;align-items:center;justify-content:center;flex-wrap:nowrap}
.nav-links a{display:block;padding:8px 11px;font-size:14px;color:var(--ink2);text-decoration:none;border-radius:10px;transition:color .22s,background .22s;white-space:nowrap}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--violet-deep);background:rgba(106,92,255,.09);outline:none}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{display:none;width:42px;height:38px;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink2);transition:transform .25s,opacity .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)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s,color .25s,border-color .25s;text-align:center;line-height:1.4}
.btn-primary{color:#fff;background:linear-gradient(118deg,#6a5cff 0%,#9b4bff 48%,#ff4ecd 100%);box-shadow:0 12px 26px -12px rgba(106,92,255,.95)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(255,78,205,.9)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--ink);background:#fff;border-color:rgba(106,92,255,.3);box-shadow:0 8px 20px -16px rgba(58,45,150,.9)}
.btn-ghost:hover{color:var(--violet-deep);border-color:rgba(255,78,205,.5);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:74px 0 60px}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(106,92,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(106,92,255,.07) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(120% 80% at 50% 0%,#000 30%,transparent 78%);mask-image:radial-gradient(120% 80% at 50% 0%,#000 30%,transparent 78%);pointer-events:none}
.hero-orb{position:absolute;border-radius:50%;pointer-events:none;filter:blur(2px)}
.hero-orb.a{width:420px;height:420px;left:-160px;top:-140px;background:radial-gradient(circle,rgba(106,92,255,.36),transparent 66%);animation:floatY 15s ease-in-out infinite}
.hero-orb.b{width:460px;height:460px;right:-190px;top:-90px;background:radial-gradient(circle,rgba(34,211,238,.34),transparent 66%);animation:floatY 19s ease-in-out infinite reverse}
.hero-orb.c{width:300px;height:300px;left:42%;bottom:-190px;background:radial-gradient(circle,rgba(255,78,205,.28),transparent 68%);animation:floatY 17s ease-in-out infinite}
@keyframes floatY{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(0,26px,0)}}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center}
.eyebrow{display:inline-block;padding:5px 15px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:1.4px;color:var(--violet-deep);background:rgba(106,92,255,.1);border:1px solid rgba(106,92,255,.24);margin-bottom:16px}
.hero h1{font-size:clamp(27px,4.1vw,44px);line-height:1.28;letter-spacing:.5px;margin-bottom:18px}
.hero h1 .grad{background:linear-gradient(112deg,#6a5cff,#ff4ecd 62%,#22d3ee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#4b32c7}
.hero-lead{font-size:16px;color:var(--ink2);max-width:560px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:30px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:520px}
.hero-stats li{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow-s);transition:transform .3s,border-color .3s}
.hero-stats li:hover{transform:translateY(-3px);border-color:rgba(255,78,205,.36)}
.hero-stats strong{display:block;font-size:22px;line-height:1.2;color:var(--violet-deep);letter-spacing:.5px}
.hero-stats span{font-size:12.5px;color:var(--muted)}
.hero-panel{position:relative;background:linear-gradient(160deg,rgba(255,255,255,.96),rgba(245,246,255,.94));border:1px solid rgba(106,92,255,.24);border-radius:24px;padding:22px;box-shadow:0 30px 60px -34px rgba(58,45,150,.85)}
.panel-top{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.panel-top .dot{width:9px;height:9px;border-radius:50%;background:#d6d9f5;flex:none}
.panel-top .dot:nth-child(1){background:#ff8ad8}
.panel-top .dot:nth-child(2){background:#b8a9ff}
.panel-top .dot:nth-child(3){background:#7ee6f5}
.panel-title{margin-left:auto;font-size:12px;letter-spacing:1px;color:var(--muted)}
.model-chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{padding:6px 13px;border-radius:999px;font-size:12.5px;color:var(--violet-deep);background:rgba(106,92,255,.09);border:1px solid rgba(106,92,255,.2);transition:transform .25s,background .25s,color .25s,border-color .25s}
.chip:hover{transform:translateY(-2px);background:linear-gradient(118deg,#6a5cff,#ff4ecd);color:#fff;border-color:transparent}
.panel-note{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(106,92,255,.26);font-size:13px;color:var(--ink2)}

/* ---------- section basics ---------- */
.section{padding:64px 0;position:relative}
.section--tint{background:linear-gradient(180deg,rgba(106,92,255,.06),rgba(255,78,205,.045))}
.section-head{max-width:780px;margin:0 auto 38px;text-align:center}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.34;margin-bottom:12px;letter-spacing:.4px}
.section-lead{color:var(--muted);font-size:15px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{position:relative;background:linear-gradient(180deg,#fff,#fbfbff);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-s);overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,#6a5cff,#ff4ecd,#22d3ee);opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:rgba(255,78,205,.36)}
.card:hover::after{opacity:1}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted)}
.icon{width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#6a5cff,#ff4ecd);box-shadow:0 12px 22px -14px rgba(106,92,255,.95);margin-bottom:14px}
.icon svg{width:22px;height:22px;display:block}
.tagline{display:inline-block;margin-top:12px;font-size:12px;color:var(--violet-deep);background:rgba(106,92,255,.08);border:1px solid rgba(106,92,255,.18);border-radius:999px;padding:3px 11px}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:38px;align-items:start}
.media{position:relative;border-radius:20px;overflow:hidden;background:#e8ebff;border:1px solid rgba(106,92,255,.2);box-shadow:var(--shadow-m);aspect-ratio:16/10}
.media img{display:block;width:100%;height:100%;object-fit:cover}
.about-body p{color:var(--ink2);margin-bottom:16px}
.feature-list{display:grid;gap:10px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 14px;box-shadow:var(--shadow-s);transition:transform .25s,border-color .25s}
.feature-list li:hover{transform:translateX(4px);border-color:rgba(255,78,205,.36)}
.feature-list b{color:var(--violet-deep);font-weight:600}

/* ---------- showcase ---------- */
.showcase-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.showcase{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.showcase:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.showcase .media{aspect-ratio:16/9;border:0;border-radius:0;box-shadow:none}
.showcase-body{padding:20px 22px 24px}
.showcase-body h3{font-size:17px;margin-bottom:8px}
.showcase-body p{font-size:14px;color:var(--muted)}

/* ---------- solutions / network ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.solution{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.solution:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.solution h3{font-size:16px;margin-bottom:8px;color:var(--violet-deep)}
.solution p{font-size:13.5px;color:var(--muted)}
.net-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.net-item{background:#fff;border:1px solid var(--line);border-left:4px solid rgba(106,92,255,.55);border-radius:14px;padding:18px;box-shadow:var(--shadow-s);transition:border-left-color .3s,transform .3s}
.net-item:hover{border-left-color:var(--magenta);transform:translateY(-3px)}
.net-item h3{font-size:15px;margin-bottom:6px}
.net-item p{font-size:13.5px;color:var(--muted)}
.net-note{margin-top:22px;text-align:center;font-size:13.5px;color:var(--muted)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 20px;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;color:#fff;font-weight:700;font-size:14px;background:linear-gradient(135deg,#6a5cff,#ff4ecd);margin-bottom:12px;box-shadow:0 10px 20px -14px rgba(106,92,255,.95)}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted)}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.case{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.case:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.case .media{aspect-ratio:4/3;border:0;border-radius:0;box-shadow:none}
.case-body{padding:18px 20px 22px}
.case-body h3{font-size:16px;margin-bottom:8px}
.case-body p{font-size:13.5px;color:var(--muted)}

/* ---------- review / table ---------- */
.score-card{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;padding:26px 28px;border-radius:22px;background:linear-gradient(118deg,rgba(106,92,255,.13),rgba(255,78,205,.12),rgba(34,211,238,.13));border:1px solid rgba(106,92,255,.24);margin-bottom:26px}
.score-num{font-size:46px;font-weight:800;line-height:1;color:#4b32c7;letter-spacing:-1px}
.score-num small{font-size:16px;font-weight:600;color:var(--ink2);margin-left:4px}
.score-card h3{font-size:18px;margin-bottom:6px}
.score-card p{font-size:14px;color:var(--ink2)}
.stars{color:#ff9f1a;letter-spacing:4px;font-size:16px;margin-top:8px;display:block}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-s)}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:14px}
thead th{background:linear-gradient(118deg,rgba(106,92,255,.14),rgba(255,78,205,.12));color:var(--ink);font-weight:700;text-align:left;padding:15px 18px;border-bottom:1px solid rgba(106,92,255,.16);white-space:nowrap}
tbody td{padding:14px 18px;border-bottom:1px solid rgba(106,92,255,.1);color:var(--ink2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(106,92,255,.05)}
td.hl{color:var(--violet-deep);font-weight:600}

/* ---------- token table ---------- */
.token-note{margin-top:16px;font-size:13px;color:var(--muted);text-align:center}

/* ---------- match ---------- */
.match-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.match-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px;box-shadow:var(--shadow-s);display:flex;flex-direction:column;gap:12px;transition:transform .3s,box-shadow .3s,border-color .3s}
.match-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(255,78,205,.36)}
.match-card h3{font-size:17px}
.match-card p{font-size:13.5px;color:var(--muted);flex:1}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.review{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 20px 20px 24px;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.review::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:4px;border-radius:0 4px 4px 0;background:linear-gradient(180deg,#6a5cff,#ff4ecd)}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.review p{font-size:14px;color:var(--ink2);margin-bottom:14px}
.review .who{font-size:13px;color:var(--muted)}
.review .who b{color:var(--violet-deep);font-weight:600;margin-right:8px}

/* ---------- help ---------- */
.help-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.help-card{background:linear-gradient(180deg,#fff,#f8f8ff);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.help-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.help-card h3{font-size:15px;margin-bottom:8px;color:var(--violet-deep)}
.help-card p{font-size:13.5px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
details.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 18px;box-shadow:var(--shadow-s);transition:border-color .25s,box-shadow .25s}
details.faq[open]{border-color:rgba(255,78,205,.42);box-shadow:var(--shadow-m)}
details.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;font-weight:600;font-size:15px;color:var(--ink)}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";flex:none;font-size:20px;line-height:1;color:var(--violet);transition:transform .25s}
details.faq[open] summary::after{content:"−";transform:rotate(180deg)}
details.faq p{margin-top:12px;font-size:14px;color:var(--muted)}

/* ---------- tags & articles ---------- */
.tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:900px;margin:0 auto}
.tag{padding:7px 15px;border-radius:999px;font-size:13px;color:var(--violet-deep);background:rgba(106,92,255,.08);border:1px solid rgba(106,92,255,.2);transition:transform .25s,background .25s,color .25s,border-color .25s}
.tag:hover{transform:translateY(-2px);background:linear-gradient(118deg,#6a5cff,#ff4ecd);color:#fff;border-color:transparent}
.article-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.article-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 20px;border-radius:14px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--ink);box-shadow:var(--shadow-s);transition:transform .25s,border-color .25s,box-shadow .25s}
.article-item:hover{transform:translateX(5px);border-color:rgba(255,78,205,.4);box-shadow:var(--shadow-m)}
.article-item span{font-size:14.5px;font-weight:500}
.article-item svg{width:18px;height:18px;flex:none;color:var(--violet)}

/* ---------- join banner ---------- */
.join-box{position:relative;overflow:hidden;border-radius:24px;padding:38px 34px;background:linear-gradient(118deg,rgba(106,92,255,.14),rgba(255,78,205,.12),rgba(34,211,238,.15));border:1px solid rgba(106,92,255,.26);display:grid;grid-template-columns:1.3fr .7fr;gap:26px;align-items:center}
.join-box h2{font-size:clamp(20px,2.6vw,27px);margin-bottom:12px}
.join-box p{font-size:14.5px;color:var(--ink2);margin-bottom:10px}
.join-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:30px;align-items:start}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 24px;box-shadow:var(--shadow-s)}
.contact-card h3{font-size:17px;margin-bottom:16px}
.contact-list{display:grid;gap:12px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink2)}
.contact-list li b{flex:none;min-width:74px;color:var(--muted);font-weight:500}
.contact-list a{word-break:break-all}
.qr-box{margin-top:18px;display:flex;align-items:center;gap:16px;padding-top:16px;border-top:1px dashed rgba(106,92,255,.26)}
.qr-box img{width:120px;height:120px;object-fit:contain;border-radius:12px;border:1px solid var(--line);background:#fff;flex:none}
.qr-box p{font-size:13px;color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13.5px;color:var(--ink2);font-weight:600}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;font-size:14px;color:var(--ink);background:#fbfbff;border:1px solid rgba(106,92,255,.22);border-radius:12px;outline:none;transition:border-color .22s,box-shadow .22s;font-family:inherit}
.field input::placeholder,.field textarea::placeholder{color:#98a0c4}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(106,92,255,.14);background:#fff}
.field textarea{resize:vertical;min-height:104px}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#0b1029;color:#c6cbf0;padding:46px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px;padding-bottom:32px}
.site-footer h4{color:#ffffff;font-size:15px;margin-bottom:14px;letter-spacing:.6px}
.site-footer p{color:#a9b0dd;font-size:13.5px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand strong{color:#fff;font-size:16px;letter-spacing:.6px}
.footer-links{display:grid;gap:9px}
.footer-links a{color:#c6cbf0;text-decoration:none;font-size:13.5px;transition:color .22s}
.footer-links a:hover{color:#ffffff}
.footer-contact{display:grid;gap:9px;font-size:13.5px;color:#c6cbf0}
.footer-contact a{color:#c6cbf0;text-decoration:none;word-break:break-all}
.footer-contact a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;font-size:12.5px;color:#8f97c8}

/* ---------- float ---------- */
.fab-wrap{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.fab{width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#6a5cff,#ff4ecd);box-shadow:0 16px 30px -14px rgba(106,92,255,.95);transition:transform .25s}
.fab:hover{transform:translateY(-3px) scale(1.04)}
.fab svg{width:24px;height:24px}
.back-top{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--violet-deep);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-s);opacity:0;visibility:hidden;transform:translateY(8px);transition:.28s}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top svg{width:18px;height:18px}
.fab-panel{width:230px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 26px 50px -30px rgba(58,45,150,.85);display:none}
.fab-panel.open{display:block}
.fab-panel h4{font-size:14px;color:var(--ink);margin-bottom:10px}
.fab-panel img{display:block;width:100%;max-width:170px;height:auto;border-radius:12px;border:1px solid var(--line);margin:0 auto 12px}
.fab-panel p{font-size:12.5px;color:var(--muted);text-align:center;margin-bottom:6px}
.fab-panel a{display:block;text-align:center;font-size:13px;color:var(--violet-deep);text-decoration:none;padding:8px 0;border-radius:10px;background:rgba(106,92,255,.08);margin-top:6px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .nav{position:absolute;left:0;right:0;top:100%;display:none;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 26px 44px -32px rgba(58,45,150,.85);padding:8px 0}
  .nav.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;padding:4px 16px 12px}
  .nav-links a{padding:11px 12px;font-size:15px}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-stats{max-width:none}
  .about-grid{grid-template-columns:1fr;gap:26px}
  .card-grid,.solution-grid,.case-grid,.review-grid,.match-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps,.net-grid,.help-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .join-box{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .section{padding:48px 0}
  .hero{padding:46px 0 44px}
  .card-grid,.solution-grid,.case-grid,.review-grid,.match-grid,.steps,.net-grid,.help-grid,.showcase-grid{grid-template-columns:1fr}
  .score-card{grid-template-columns:1fr;gap:12px;text-align:left;padding:22px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hidden-sm{display:none}
  .hero-stats{grid-template-columns:1fr 1fr}
  .qr-box{flex-direction:column;align-items:flex-start}
  .brand-text em{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero-orb{animation:none}
}