*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#070b16;
  --bg2:#0b1224;
  --card:#101a30;
  --card2:#0e172a;
  --line:rgba(120,160,255,.16);
  --txt:#e8eeff;
  --sub:#9fb0d0;
  --neon1:#00e5ff;
  --neon2:#7c5cff;
  --neon3:#ff3d8b;
  --neon4:#39ffb0;
  --grad:linear-gradient(120deg,#00e5ff,#7c5cff 55%,#ff3d8b);
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
section{padding:90px 0;position:relative}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head{text-align:center;max-width:820px;margin:0 auto 52px}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--neon1);border:1px solid rgba(0,229,255,.35);padding:5px 16px;border-radius:999px;margin-bottom:16px;background:rgba(0,229,255,.06)}
.sec-title{font-size:34px;font-weight:800;letter-spacing:.5px;line-height:1.3;margin-bottom:14px}
.sec-desc{color:var(--sub);font-size:15.5px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:.28s;position:relative}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 0 0 rgba(124,92,255,0)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 34px rgba(124,92,255,.55)}
.btn-ghost{border:1px solid var(--line);color:var(--txt);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--neon1);color:var(--neon1);transform:translateY(-3px)}
.btn:active{transform:translateY(0)}

/* NAV */
header{position:sticky;top:0;z-index:1000;backdrop-filter:blur(14px);background:rgba(7,11,22,.82);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.ai-page-logo{height:40px;width:auto}
.brand-name{font-size:19px;font-weight:800;letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{font-size:14.5px;color:var(--sub);padding:10px 13px;border-radius:8px;transition:.25s;white-space:nowrap;position:relative}
.nav-links a:hover{color:var(--neon1);background:rgba(0,229,255,.08)}
.nav-links a.ai-page-home-link{color:var(--txt);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-cta{padding:9px 20px;font-size:13.5px}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}

/* HERO no images */
.hero{
  position:relative;padding:110px 0 100px;overflow:hidden;
  background:
    radial-gradient(900px 500px at 15% 10%,rgba(0,229,255,.16),transparent 60%),
    radial-gradient(800px 520px at 85% 20%,rgba(124,92,255,.20),transparent 62%),
    radial-gradient(700px 500px at 60% 95%,rgba(255,61,139,.13),transparent 60%),
    linear-gradient(180deg,#070b16,#0a1020 70%,#070b16);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,160,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%);
  mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%);
  pointer-events:none;
}
.hero-glow{position:absolute;width:340px;height:340px;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none}
.hg1{background:#00e5ff;top:-80px;left:-60px;animation:float1 9s ease-in-out infinite}
.hg2{background:#7c5cff;bottom:-100px;right:-40px;animation:float2 11s ease-in-out infinite}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,30px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(-40px,-26px)}}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:940px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:#bfe9ff;background:rgba(0,229,255,.08);border:1px solid rgba(0,229,255,.28);padding:7px 18px;border-radius:999px;margin-bottom:26px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--neon4);box-shadow:0 0 12px var(--neon4);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:50px;line-height:1.22;font-weight:900;letter-spacing:1px;margin-bottom:22px}
.hero-sub{font-size:17px;color:var(--sub);max-width:720px;margin:0 auto 34px}
.hero-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:52px}
.hero-btns .btn{padding:15px 38px;font-size:16px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{background:rgba(16,26,48,.66);border:1px solid var(--line);border-radius:16px;padding:22px 12px;transition:.3s}
.stat-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.4);box-shadow:0 16px 40px rgba(0,229,255,.14)}
.stat-num{font-size:28px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:13px;color:var(--sub);margin-top:4px}

/* cards generic */
.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:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px 26px;transition:.32s;position:relative;overflow:hidden}
.card::after{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:var(--grad);opacity:0;transition:.32s}
.card:hover{transform:translateY(-8px);border-color:rgba(124,92,255,.45);box-shadow:0 20px 46px rgba(0,0,0,.5)}
.card:hover::after{opacity:1}
.card-ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.25)}
.card h3{font-size:19px;margin-bottom:10px;font-weight:700}
.card p{font-size:14.5px;color:var(--sub)}
.sec-alt{background:linear-gradient(180deg,#070b16,#0b1224,#070b16)}

/* about */
.about-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:46px;align-items:center}
.about-img{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.about-img img{width:100%;transition:.6s}
.about-img:hover img{transform:scale(1.04)}
.about-list li{display:flex;gap:12px;padding:11px 0;color:var(--sub);font-size:15px;border-bottom:1px dashed rgba(120,160,255,.12)}
.about-list li b{color:var(--txt)}
.ck{color:var(--neon4);font-weight:900}

/* tags */
.tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:8px}
.tag{font-size:13px;color:#bfe9ff;border:1px solid rgba(0,229,255,.24);background:rgba(0,229,255,.06);padding:6px 14px;border-radius:999px;transition:.25s}
.tag:hover{background:rgba(0,229,255,.18);transform:translateY(-2px)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step}
.step{background:var(--card2);border:1px solid var(--line);border-radius:16px;padding:28px 18px;position:relative;text-align:center;transition:.3s}
.step:hover{transform:translateY(-6px);border-color:rgba(255,61,139,.4)}
.step .n{width:44px;height:44px;border-radius:50%;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;font-weight:900;background:var(--grad);color:#fff}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:var(--sub)}

/* table */
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:var(--card2)}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
th{background:rgba(124,92,255,.14);color:#d7e2ff;font-weight:700;white-space:nowrap}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(0,229,255,.05)}
td.pos{color:var(--neon4);font-weight:700}
td.mid{color:#ffd166}

/* rating */
.rating-box{display:grid;grid-template-columns:280px 1fr;gap:36px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:38px;margin-bottom:34px}
.rating-score{text-align:center}
.rating-score .num{font-size:64px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.rating-score .stars{color:#ffd166;font-size:22px;letter-spacing:4px;margin-top:10px}
.rating-score .lbl{color:var(--sub);font-size:14px;margin-top:8px}
.rating-info h3{font-size:22px;margin-bottom:10px}
.rating-info p{color:var(--sub);font-size:15px}
.bar{height:8px;border-radius:6px;background:rgba(255,255,255,.08);margin-top:16px;overflow:hidden}
.bar i{display:block;height:100%;width:99%;background:var(--grad);border-radius:6px}

/* case */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--card);transition:.32s}
.case:hover{transform:translateY(-8px);box-shadow:0 20px 46px rgba(0,0,0,.5)}
.case-img{aspect-ratio:16/10;overflow:hidden;background:#0a1020}
.case-img img{width:100%;height:100%;object-fit:cover;transition:.6s}
.case:hover .case-img img{transform:scale(1.06)}
.case-body{padding:20px 22px}
.case-body h3{font-size:17px;margin-bottom:6px}
.case-body p{font-size:13.5px;color:var(--sub)}
.chip{display:inline-block;font-size:12px;color:var(--neon1);background:rgba(0,229,255,.1);padding:3px 10px;border-radius:6px;margin-top:10px}

/* reviews */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;transition:.3s}
.review:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.35)}
.review .stars{color:#ffd166;letter-spacing:2px;margin-bottom:12px;font-size:14px}
.review p{font-size:14.5px;color:#c6d2ea;margin-bottom:18px}
.reviewer{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;background:var(--grad)}
.reviewer b{display:block;font-size:14.5px}
.reviewer span{font-size:12.5px;color:var(--sub)}

/* faq */
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:var(--card2);overflow:hidden;transition:.3s}
.faq-item.open{border-color:rgba(0,229,255,.4);box-shadow:0 10px 30px rgba(0,229,255,.1)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;font-weight:700;font-size:15.5px;transition:.25s}
.faq-q:hover{color:var(--neon1)}
.faq-q .icon{font-size:22px;color:var(--neon1);transition:.3s;flex-shrink:0}
.faq-item.open .icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 20px;color:var(--sub);font-size:14.5px}

/* form */
.form-wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--sub);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 15px;border-radius:10px;border:1px solid var(--line);background:#0a1222;color:var(--txt);font-size:14.5px;font-family:inherit;transition:.25s;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--neon1);box-shadow:0 0 0 3px rgba(0,229,255,.14)}
.field textarea{resize:vertical;min-height:110px}
.form-card .btn{width:100%;padding:14px;margin-top:6px}
.contact-list li{display:flex;gap:14px;align-items:flex-start;padding:16px;background:var(--card2);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;transition:.3s}
.contact-list li:hover{border-color:rgba(124,92,255,.4);transform:translateX(4px)}
.contact-list .ci{width:40px;height:40px;border-radius:10px;background:rgba(124,92,255,.16);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.contact-list b{display:block;font-size:14px}
.contact-list span{font-size:13.5px;color:var(--sub);word-break:break-all}
.qr{display:flex;align-items:center;gap:14px;padding:16px;background:var(--card2);border:1px solid var(--line);border-radius:14px}
.qr img{width:96px;height:96px;object-fit:cover;border-radius:10px}

/* articles */
.article-list li{display:flex;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px dashed rgba(120,160,255,.14);transition:.25s}
.article-list li:hover{padding-left:8px}
.article-list a{font-size:15px;transition:.25s}
.article-list a:hover{color:var(--neon1)}
.article-list span{font-size:13px;color:var(--sub);white-space:nowrap}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px 26px;text-align:center;transition:.3s;position:relative}
.price-card:hover{transform:translateY(-8px);border-color:rgba(0,229,255,.4)}
.price-card.hot{border-color:rgba(124,92,255,.55);box-shadow:0 0 0 1px rgba(124,92,255,.3) inset}
.price-card .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;padding:4px 16px;border-radius:999px;font-weight:700}
.price-card .plan{font-size:17px;font-weight:700;margin-bottom:8px}
.price-card .amount{font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price-card .amount small{font-size:14px;color:var(--sub);font-weight:400}
.price-card ul{margin:20px 0;text-align:left}
.price-card ul li{font-size:13.5px;color:var(--sub);padding:6px 0}

/* network */
.network{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net{background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:20px;transition:.3s}
.net:hover{transform:translateY(-5px);border-color:rgba(0,229,255,.32)}
.net b{display:block;font-size:15px;margin-bottom:4px}
.net span{font-size:13px;color:var(--sub)}

/* footer */
footer{background:#060a14;border-top:1px solid var(--line);padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.foot-brand p{color:var(--sub);font-size:14px;margin:14px 0}
.foot-col h4{font-size:15px;margin-bottom:16px;color:#d7e2ff}
.foot-col a{display:block;font-size:13.5px;color:var(--sub);padding:5px 0;transition:.25s}
.foot-col a:hover{color:var(--neon1);padding-left:5px}
.copy{border-top:1px solid var(--line);padding-top:24px;text-align:center;font-size:13px;color:#6b7c9c}

/* float */
.float-cs{position:fixed;right:22px;bottom:26px;z-index:900;display:flex;flex-direction:column;gap:10px}
.float-btn{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--grad);color:#fff;font-size:22px;cursor:pointer;box-shadow:0 10px 30px rgba(124,92,255,.5);transition:.3s;border:none}
.float-btn:hover{transform:translateY(-4px) scale(1.06)}
.qr-pop{position:fixed;right:88px;bottom:26px;z-index:901;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px;display:none;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.qr-pop.show{display:block;animation:fadeIn .3s}
.qr-pop img{width:150px;height:150px;border-radius:10px;object-fit:cover}
.qr-pop p{font-size:12.5px;color:var(--sub);margin-top:8px}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* reveal */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:translateY(0)}

/* responsive */
@media(max-width:1024px){
  .hero h1{font-size:38px}
  .grid-3,.grid-4,.reviews,.case-grid,.price-grid,.network{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .about-wrap,.form-wrap{grid-template-columns:1fr}
  .rating-box{grid-template-columns:1fr;text-align:center}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  section{padding:60px 0}
  .nav-links{position:fixed;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:#0a1020;border-bottom:1px solid var(--line);padding:10px 16px;gap:0;max-height:0;overflow:hidden;transition:max-height .35s ease;z-index:999}
  .nav-links.open{max-height:560px;overflow-y:auto;padding:10px 16px 20px}
  .nav-links a{padding:13px 12px;border-radius:8px}
  .burger{display:flex}
  .nav-cta{display:none}
  .hero{padding:70px 0 60px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:15px}
  .hero-btns .btn{padding:13px 26px;font-size:14.5px}
  .sec-title{font-size:25px}
  .grid-3,.grid-4,.reviews,.case-grid,.price-grid,.network,.steps,.form-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .float-btn{width:48px;height:48px;font-size:19px}
  .ai-page-logo{height:32px}
  .brand-name{font-size:16px}
  .qr-pop{right:78px}
}