:root{
  --bg:#05060f;
  --bg2:#0a0d1f;
  --panel:rgba(18,22,42,.72);
  --line:rgba(120,140,255,.16);
  --txt:#e8ecff;
  --sub:#98a2c9;
  --cyan:#22e6ff;
  --violet:#8b5cff;
  --pink:#ff4fd8;
  --lime:#6bffb0;
  --grad:linear-gradient(120deg,#22e6ff 0%,#8b5cff 50%,#ff4fd8 100%);
  --radius:18px;
  --shadow:0 10px 40px rgba(80,60,220,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--txt);
  line-height:1.7;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 500px at 8% -5%,rgba(34,230,255,.16),transparent 60%),
    radial-gradient(800px 520px at 95% 8%,rgba(255,79,216,.14),transparent 60%),
    radial-gradient(900px 700px at 50% 110%,rgba(139,92,255,.18),transparent 60%),
    linear-gradient(180deg,#05060f,#070a18 40%,#05060f);
}
a{color:inherit;text-decoration:none}
img{display:block}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
section{position:relative;padding:72px 0}
.sec-head{text-align:center;max-width:820px;margin:0 auto 44px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--cyan);border:1px solid rgba(34,230,255,.35);padding:5px 16px;border-radius:999px;margin-bottom:16px;background:rgba(34,230,255,.06)}
h2{font-size:clamp(24px,3.4vw,38px);line-height:1.3;font-weight:800}
h2 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{color:var(--sub);margin-top:14px;font-size:15.5px}

/* nav */
.nav{position:sticky;top:0;z-index:100;backdrop-filter:blur(16px);background:rgba(6,8,20,.82);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.ai-page-logo{height:38px;width:auto}
.brand-txt{font-weight:800;font-size:17px;letter-spacing:1px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{padding:8px 12px;font-size:14px;color:var(--sub);border-radius:8px;transition:.25s;white-space:nowrap}
.nav-links a:hover{color:#fff;background:rgba(139,92,255,.16);text-shadow:0 0 12px rgba(34,230,255,.6)}
.nav-cta{flex:none;display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:transform .2s,box-shadow .25s,filter .25s;white-space:nowrap}
.btn:active{transform:scale(.96)}
.btn-primary{background:var(--grad);color:#06060f;box-shadow:0 8px 30px rgba(139,92,255,.45)}
.btn-primary:hover{filter:brightness(1.1);box-shadow:0 12px 40px rgba(34,230,255,.55);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.hamb{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:40px;cursor:pointer;color:#fff;font-size:20px}

/* hero */
.hero{padding:96px 0 80px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,54px);line-height:1.18;font-weight:900;letter-spacing:.5px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--sub);font-size:17px;margin:22px 0 30px;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.hero-tags span{font-size:13px;color:var(--sub);border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:rgba(255,255,255,.02)}
.hero-visual{position:relative;min-height:380px}
.glow-orb{position:absolute;border-radius:50%;filter:blur(46px);opacity:.55;animation:float 8s ease-in-out infinite}
.orb1{width:260px;height:260px;background:radial-gradient(circle,#22e6ff,transparent 70%);top:0;right:40px}
.orb2{width:220px;height:220px;background:radial-gradient(circle,#ff4fd8,transparent 70%);bottom:20px;left:0;animation-delay:-3s}
.orb3{width:180px;height:180px;background:radial-gradient(circle,#8b5cff,transparent 70%);top:120px;left:120px;animation-delay:-5s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-22px)}}
.hero-card{position:relative;z-index:2;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);backdrop-filter:blur(10px)}
.hero-card h4{font-size:15px;color:var(--cyan);margin-bottom:16px;letter-spacing:1px}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mini{padding:14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line);transition:.25s}
.mini:hover{border-color:var(--violet);transform:translateY(-3px)}
.mini b{display:block;font-size:22px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mini small{color:var(--sub);font-size:12px}
.bar{margin-top:18px;height:8px;border-radius:8px;background:rgba(255,255,255,.07);overflow:hidden}
.bar i{display:block;height:100%;width:88%;background:var(--grad);border-radius:8px;animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.75}50%{opacity:1}}

/* stats strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;transition:.3s}
.stat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(34,230,255,.4)}
.stat b{font-size:clamp(26px,3vw,38px);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.stat span{color:var(--sub);font-size:14px}

/* cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s;position:relative;overflow:hidden}
.card::after{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;background:var(--grad);opacity:0;transition:.3s;-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card:hover::after{opacity:1}
.card h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--sub);font-size:14.5px}
.icon-badge{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:rgba(139,92,255,.16);border:1px solid rgba(139,92,255,.32);margin-bottom:16px;font-size:22px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.about-list{list-style:none;display:grid;gap:14px}
.about-list li{display:flex;gap:12px;align-items:flex-start;color:var(--sub);font-size:15px}
.about-list li::before{content:"◆";color:var(--cyan);flex:none;font-size:12px;margin-top:6px}
.about-visual{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud span{font-size:13px;padding:6px 13px;border-radius:999px;border:1px solid var(--line);color:var(--sub);background:rgba(255,255,255,.02);transition:.25s}
.tag-cloud span:hover{color:#fff;border-color:var(--cyan);box-shadow:0 0 14px rgba(34,230,255,.35)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{padding:26px 22px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);transition:.3s;position:relative}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step .num{font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.step h4{margin:12px 0 8px;font-size:17px}
.step p{color:var(--sub);font-size:14px}

/* table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{padding:16px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
th{background:rgba(139,92,255,.12);color:#fff;font-weight:700;white-space:nowrap}
td{color:var(--sub)}
tr:hover td{background:rgba(34,230,255,.04);color:var(--txt)}
td strong{color:var(--lime)}

/* rate card */
.rate{display:flex;align-items:center;gap:26px;flex-wrap:wrap;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px;margin-top:30px;position:relative;overflow:hidden}
.rate::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 200px at 20% 0%,rgba(34,230,255,.14),transparent);pointer-events:none}
.rate-score{font-size:64px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.rate-score small{font-size:20px;color:var(--sub);-webkit-text-fill-color:var(--sub)}
.stars{color:#ffd54a;font-size:22px;letter-spacing:3px}
.rate-txt{color:var(--sub);font-size:15px;max-width:520px}

/* reviews */
.review{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.3s}
.review:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(255,79,216,.4)}
.review .who{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-weight:800;color:#06060f;flex:none}
.who b{display:block;font-size:15px}
.who small{color:var(--sub);font-size:12.5px}
.review p{color:var(--sub);font-size:14.5px}
.review .stars{font-size:15px;margin-top:12px}

/* cases */
.case{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case img{width:100%;height:220px;object-fit:cover;transition:.5s}
.case:hover img{transform:scale(1.05)}
.case-body{padding:22px}
.case-body h3{font-size:18px;margin-bottom:8px}
.case-body p{color:var(--sub);font-size:14px}

/* articles */
.article a{display:flex;flex-direction:column;justify-content:space-between;height:100%;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.3s}
.article a:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(34,230,255,.4)}
.article h4{font-size:16px;margin-bottom:10px;line-height:1.5}
.article p{color:var(--sub);font-size:13.5px}
.article span{margin-top:14px;color:var(--cyan);font-size:13px}

/* form */
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;color:var(--sub)}
.field input,.field select,.field textarea{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;padding:13px 15px;color:var(--txt);font-size:14.5px;font-family:inherit;transition:.25s;outline:none;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,230,255,.15)}
.field textarea{resize:vertical;min-height:110px}
.field select option{background:#0a0d1f;color:#fff}
.form-card .btn{margin-top:22px;width:100%}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.contact-info{display:grid;gap:14px}
.ci{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);transition:.25s}
.ci:hover{border-color:var(--cyan);transform:translateX(4px)}
.ci b{display:block;font-size:14px;margin-bottom:4px}
.ci span{color:var(--sub);font-size:14px;word-break:break-all}
.qr-box{text-align:center;padding:20px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02)}
.qr-box img{width:150px;height:150px;object-fit:cover;margin:0 auto 12px;border-radius:10px;background:#fff;padding:6px}
.qr-box small{color:var(--sub);font-size:13px}

/* faq */
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--panel);margin-bottom:14px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:rgba(34,230,255,.35)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;font-size:15.5px;font-weight:600}
.faq-q .ico{width:26px;height:26px;flex:none;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:16px;color:var(--cyan);transition:.3s}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--grad);color:#06060f;border-color:transparent}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;color:var(--sub);font-size:14.5px;line-height:1.8}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s;position:relative}
.price:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price.hot{border-color:rgba(139,92,255,.6);box-shadow:0 0 40px rgba(139,92,255,.25)}
.price .flag{position:absolute;top:16px;right:16px;font-size:12px;padding:4px 12px;border-radius:999px;background:var(--grad);color:#06060f;font-weight:700}
.price h4{font-size:17px;margin-bottom:10px}
.price .p{font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:6px}
.price .p small{font-size:14px;color:var(--sub);-webkit-text-fill-color:var(--sub)}
.price ul{list-style:none;margin-top:18px;display:grid;gap:10px}
.price li{color:var(--sub);font-size:14px;padding-left:20px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--lime)}

/* network */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net{padding:22px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.02);text-align:center;transition:.25s}
.net:hover{border-color:var(--violet);transform:translateY(-4px)}
.net b{display:block;font-size:16px;margin-bottom:6px}
.net span{color:var(--sub);font-size:13px}

/* timeline */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--cyan),var(--violet),var(--pink))}
.tl-item{position:relative;padding-bottom:26px}
.tl-item::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--grad);box-shadow:0 0 14px rgba(139,92,255,.7)}
.tl-item b{display:block;font-size:16px;margin-bottom:6px}
.tl-item span{color:var(--sub);font-size:14px}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 30px;background:rgba(6,8,20,.7)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.foot-brand p{color:var(--sub);font-size:14px;margin-top:14px;max-width:320px}
.foot-col h5{font-size:15px;margin-bottom:16px;color:#fff}
.foot-col a{display:block;color:var(--sub);font-size:14px;margin-bottom:10px;transition:.2s}
.foot-col a:hover{color:var(--cyan);transform:translateX(4px)}
.foot-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:22px;text-align:center;color:var(--sub);font-size:13px}

/* float */
.float-bar{position:fixed;right:20px;bottom:26px;display:flex;flex-direction:column;gap:12px;z-index:120}
.fbtn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:var(--panel);border:1px solid var(--line);cursor:pointer;transition:.3s;color:var(--txt);font-size:20px;backdrop-filter:blur(10px)}
.fbtn:hover{background:var(--grad);color:#06060f;transform:translateY(-4px);box-shadow:0 8px 24px rgba(139,92,255,.5)}
.fbtn.hide{opacity:0;pointer-events:none}
.kf-pop{position:fixed;right:88px;bottom:26px;background:#0d1226;border:1px solid var(--line);border-radius:16px;padding:18px;text-align:center;z-index:121;opacity:0;pointer-events:none;transform:translateY(10px);transition:.3s;box-shadow:var(--shadow);width:200px}
.kf-pop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.kf-pop img{width:140px;height:140px;object-fit:cover;margin:0 auto 10px;border-radius:10px;background:#fff;padding:6px}
.kf-pop small{color:var(--sub);font-size:12.5px;display:block}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{min-height:320px}
  .grid-3,.grid-4,.price-grid,.net-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nav-links{position:fixed;top:70px;left:0;right:0;background:rgba(6,8,20,.98);flex-direction:column;align-items:stretch;padding:14px 20px 22px;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:.35s;z-index:99;gap:0}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:12px 8px;border-bottom:1px solid rgba(255,255,255,.05)}
  .hamb{display:grid;place-items:center}
  .nav-cta .btn-ghost{display:none}
}
@media(max-width:640px){
  section{padding:52px 0}
  .grid-3,.grid-4,.price-grid,.net-grid,.steps,.form-grid{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:1fr 1fr}
  .rate{flex-direction:column;text-align:center}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:64px 0 56px}
  .hero-actions .btn{width:100%}
  .float-bar{right:14px;bottom:18px}
  .kf-pop{right:76px;width:180px}
  .brand-txt{font-size:15px}
  .ai-page-logo{height:32px}
}