*{margin:0;padding:0;box-sizing:border-box}
:root{
  --c-bg:#0b0d17;
  --c-bg2:#11142a;
  --c-card:#161a33;
  --c-primary:#ff3d6e;
  --c-primary2:#ff7a45;
  --c-accent:#12e6c8;
  --c-purple:#7b5cff;
  --c-text:#eef1ff;
  --c-muted:#9aa3c7;
  --c-line:rgba(255,255,255,.08);
  --radius:16px;
  --shadow:0 12px 40px rgba(0,0,0,.45);
}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--c-bg);color:var(--c-text);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
section{padding:80px 0;position:relative}
.section-head{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--c-accent);border:1px solid rgba(18,230,200,.35);padding:4px 14px;border-radius:30px;margin-bottom:16px}
.section-head h2{font-size:34px;line-height:1.3;font-weight:800;margin-bottom:14px}
.section-head p{color:var(--c-muted);max-width:720px;margin:0 auto;font-size:15px}
.grad{background:linear-gradient(90deg,var(--c-primary),var(--c-primary2),var(--c-accent));-webkit-background-clip:text;background-clip:text;color:transparent}

/* NAV */
header.site-nav{position:sticky;top:0;z-index:1000;background:rgba(11,13,23,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--c-line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.ai-page-logo{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:0;list-style:none}
.nav-links li a{display:block;padding:8px 13px;font-size:14px;color:var(--c-muted);border-radius:8px;transition:.25s}
.nav-links li a:hover{color:#fff;background:rgba(255,61,110,.14)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:9px 20px;border-radius:30px;background:linear-gradient(90deg,var(--c-primary),var(--c-primary2));color:#fff;font-size:14px;font-weight:700;box-shadow:0 6px 20px rgba(255,61,110,.35);transition:.25s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,61,110,.5)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* HERO */
.hero{position:relative;padding:90px 0 80px;overflow:hidden;background:radial-gradient(circle at 15% 20%,rgba(123,92,255,.28),transparent 45%),radial-gradient(circle at 85% 30%,rgba(255,61,110,.22),transparent 45%),linear-gradient(160deg,#0b0d17,#11142a 60%,#0b0d17)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 75%);pointer-events:none}
.hero-blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;animation:float 9s ease-in-out infinite}
.hero-blob.b1{width:320px;height:320px;background:var(--c-purple);top:-60px;right:8%}
.hero-blob.b2{width:260px;height:260px;background:var(--c-primary);bottom:-80px;left:5%;animation-delay:2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-22px)}}
.hero-inner{position:relative;z-index:2;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:30px;background:rgba(255,61,110,.12);border:1px solid rgba(255,61,110,.35);font-size:13px;color:#ffb3c6;margin-bottom:24px}
.hero h1{font-size:52px;line-height:1.2;font-weight:900;letter-spacing:1px;margin-bottom:22px}
.hero-sub{font-size:17px;color:var(--c-muted);max-width:760px;margin:0 auto 34px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 34px;border-radius:34px;font-size:16px;font-weight:700;cursor:pointer;border:none;transition:.28s;font-family:inherit}
.btn-primary{background:linear-gradient(90deg,var(--c-primary),var(--c-primary2));color:#fff;box-shadow:0 10px 30px rgba(255,61,110,.45)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(255,61,110,.6)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:900px;margin:0 auto}
.stat-card{background:rgba(255,255,255,.045);border:1px solid var(--c-line);border-radius:var(--radius);padding:22px 14px;backdrop-filter:blur(6px);transition:.3s}
.stat-card:hover{transform:translateY(-6px);border-color:rgba(255,61,110,.4);box-shadow:0 14px 34px rgba(0,0,0,.4)}
.stat-num{font-size:32px;font-weight:900;background:linear-gradient(90deg,var(--c-primary2),var(--c-accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:13px;color:var(--c-muted);margin-top:6px}

/* generic card grids */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:28px 24px;transition:.3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);border-color:rgba(255,61,110,.4);box-shadow:var(--shadow)}
.card h3{font-size:18px;margin-bottom:10px;font-weight:700}
.card p{font-size:14px;color:var(--c-muted)}
.icon-box{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:linear-gradient(135deg,rgba(255,61,110,.2),rgba(123,92,255,.2));color:var(--c-primary2);font-size:22px;font-weight:900}

/* about */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.about-text h2{font-size:32px;margin-bottom:18px;font-weight:800}
.about-text p{color:var(--c-muted);margin-bottom:14px;font-size:15px}
.about-list{list-style:none;margin-top:22px}
.about-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:12px;font-size:14px;color:var(--c-text)}
.about-list li::before{content:"✓";flex-shrink:0;width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:3px}
.about-visual{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about-visual img{border-radius:14px;border:1px solid var(--c-line);width:100%;height:100%;object-fit:cover;transition:.3s}
.about-visual img:hover{transform:scale(1.03);border-color:rgba(255,61,110,.4)}

/* services */
.svc-card{position:relative}
.svc-card .num{position:absolute;top:16px;right:20px;font-size:38px;font-weight:900;color:rgba(255,255,255,.05)}

/* tags cloud */
.tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.tag{padding:8px 18px;border-radius:30px;background:rgba(255,255,255,.05);border:1px solid var(--c-line);font-size:14px;color:var(--c-muted);transition:.25s;cursor:default}
.tag:hover{color:#fff;border-color:rgba(255,61,110,.5);background:rgba(255,61,110,.14);transform:translateY(-2px)}

/* process */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step}
.step{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px 20px;position:relative;transition:.3s}
.step:hover{transform:translateY(-6px);border-color:rgba(18,230,200,.4)}
.step::before{counter-increment:step;content:"0" counter(step);font-size:40px;font-weight:900;color:rgba(255,61,110,.22);display:block;margin-bottom:10px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13px;color:var(--c-muted)}

/* table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--c-line);background:var(--c-card)}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--c-line)}
th{background:rgba(255,61,110,.12);color:#fff;font-weight:700;white-space:nowrap}
td{color:var(--c-muted)}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(255,255,255,.03);color:var(--c-text)}
.badge-best{display:inline-block;padding:2px 10px;border-radius:20px;background:linear-gradient(90deg,var(--c-primary),var(--c-primary2));color:#fff;font-size:12px;font-weight:700}

/* review */
.review-card{display:flex;flex-direction:column;gap:14px}
.review-head{display:flex;align-items:center;gap:14px}
.avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--c-purple),var(--c-primary));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff;flex-shrink:0}
.review-name{font-weight:700;font-size:15px}
.review-role{font-size:12px;color:var(--c-muted)}
.stars{color:#ffca3a;font-size:14px;letter-spacing:2px}
.review-card p{font-size:14px;color:var(--c-muted)}

/* case */
.case-card{padding:0;overflow:hidden}
.case-card img{width:100%;height:220px;object-fit:cover;transition:.4s}
.case-card:hover img{transform:scale(1.06)}
.case-body{padding:22px}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:32px 26px;text-align:center;transition:.3s;position:relative}
.price-card.featured{border-color:var(--c-primary);box-shadow:0 0 0 1px var(--c-primary),0 18px 44px rgba(255,61,110,.25);transform:translateY(-8px)}
.price-card:hover{transform:translateY(-8px)}
.price-card.featured:hover{transform:translateY(-14px)}
.price-name{font-size:16px;font-weight:700;color:var(--c-accent);margin-bottom:12px}
.price-val{font-size:40px;font-weight:900;margin-bottom:6px}
.price-val small{font-size:14px;color:var(--c-muted);font-weight:400}
.price-card ul{list-style:none;margin:22px 0;text-align:left}
.price-card ul li{font-size:14px;color:var(--c-muted);padding:8px 0;border-bottom:1px dashed var(--c-line)}
.price-card ul li::before{content:"·";color:var(--c-primary);font-weight:900;margin-right:8px}

/* timeline */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--c-primary),var(--c-accent))}
.tl-item{position:relative;padding:0 0 30px 20px}
.tl-item::before{content:"";position:absolute;left:-28px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px rgba(255,61,110,.2)}
.tl-year{font-weight:800;color:var(--c-accent);font-size:15px}
.tl-item p{font-size:14px;color:var(--c-muted);margin-top:4px}

/* network */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.net-item{background:rgba(255,255,255,.04);border:1px solid var(--c-line);border-radius:14px;padding:20px;text-align:center;transition:.3s}
.net-item:hover{transform:translateY(-5px);border-color:rgba(18,230,200,.4)}
.net-item h4{font-size:16px;margin-bottom:6px}
.net-item p{font-size:13px;color:var(--c-muted)}

/* articles */
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;transition:.3s;display:flex;flex-direction:column;gap:12px}
.article-card:hover{transform:translateY(-6px);border-color:rgba(255,61,110,.4);box-shadow:var(--shadow)}
.article-card .date{font-size:12px;color:var(--c-accent)}
.article-card h3{font-size:17px;line-height:1.5}
.article-card p{font-size:13px;color:var(--c-muted);flex:1}
.article-card .more{font-size:13px;color:var(--c-primary);font-weight:700}
.link-grid{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* faq */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;background:var(--c-card)}
.faq-q{width:100%;text-align:left;padding:18px 22px;font-size:15px;font-weight:700;color:var(--c-text);background:none;border:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px;font-family:inherit}
.faq-q .ico{color:var(--c-primary);font-size:20px;transition:.3s;flex-shrink:0}
.faq-item.active .faq-q .ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 18px;font-size:14px;color:var(--c-muted)}

/* form */
.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:13px;color:var(--c-muted)}
.field input,.field select,.field textarea{background:rgba(255,255,255,.05);border:1px solid var(--c-line);border-radius:10px;padding:12px 14px;color:#fff;font-size:14px;font-family:inherit;transition:.25s;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);background:rgba(255,61,110,.07)}
.field textarea{resize:vertical;min-height:120px}
.form-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:34px}
.form-note{font-size:13px;color:var(--c-muted);margin-top:14px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h2{font-size:30px;margin-bottom:18px}
.contact-info p{color:var(--c-muted);margin-bottom:24px}
.contact-item{display:flex;gap:14px;margin-bottom:18px;align-items:flex-start}
.contact-item .ci-ico{width:40px;height:40px;border-radius:10px;background:rgba(255,61,110,.15);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-weight:800;flex-shrink:0}
.contact-item h4{font-size:14px;margin-bottom:2px}
.contact-item span{font-size:13px;color:var(--c-muted);word-break:break-all}
.qr-box{text-align:center;margin-top:20px}
.qr-box img{width:150px;height:150px;object-fit:cover;border-radius:12px;border:2px solid var(--c-line);margin:0 auto 8px}
.qr-box small{font-size:12px;color:var(--c-muted)}

/* banner images */
.banner-box{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.banner-box img{width:100%;border-radius:16px;border:1px solid var(--c-line);transition:.3s}
.banner-box img:hover{transform:translateY(-5px);box-shadow:var(--shadow)}

/* footer */
footer{background:#080a12;border-top:1px solid var(--c-line);padding:60px 0 30px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;margin-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;margin-bottom:14px}
.footer-grid p{color:var(--c-muted);font-size:13px;line-height:1.9}
.footer-grid h4{font-size:15px;margin-bottom:14px;color:#fff}
.footer-grid ul{list-style:none}
.footer-grid ul li{margin-bottom:9px}
.footer-grid ul li a{color:var(--c-muted);font-size:13px;transition:.2s}
.footer-grid ul li a:hover{color:var(--c-primary)}
.footer-bottom{border-top:1px solid var(--c-line);padding-top:22px;text-align:center;color:var(--c-muted);font-size:12px}
.friend-links{line-height:2.2}
.friend-links a{color:var(--c-muted);margin-right:14px;font-size:13px}
.friend-links a:hover{color:var(--c-primary)}

/* float */
.float-cs{position:fixed;right:20px;bottom:90px;z-index:900}
.fc-btn{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-primary2));display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;cursor:pointer;box-shadow:0 10px 26px rgba(255,61,110,.5);transition:.3s;border:none}
.fc-btn:hover{transform:scale(1.08)}
.fc-panel{position:absolute;right:70px;bottom:0;width:220px;background:var(--c-card);border:1px solid var(--c-line);border-radius:14px;padding:16px;box-shadow:var(--shadow);display:none}
.fc-panel.show{display:block;animation:fadeIn .3s}
.fc-panel img{width:100%;border-radius:8px;margin-bottom:8px}
.fc-panel p{font-size:12px;color:var(--c-muted);text-align:center}
.back-top{position:fixed;right:20px;bottom:24px;z-index:900;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.08);border:1px solid var(--c-line);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;opacity:0;pointer-events:none;transition:.3s}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--c-primary)}

/* reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* responsive */
@media(max-width:1024px){
  .g4,.process,.net-grid{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:40px}
  .about-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:820px){
  .nav-links{position:fixed;top:68px;left:0;right:0;background:rgba(11,13,23,.98);flex-direction:column;align-items:stretch;padding:12px 20px;gap:0;max-height:0;overflow:hidden;transition:max-height .35s ease;border-bottom:1px solid var(--c-line)}
  .nav-links.open{max-height:600px;padding:12px 20px 20px}
  .nav-links li a{padding:12px 10px;border-radius:8px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  section{padding:60px 0}
  .hero h1{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .g3,.g2,.article-list,.price-grid,.contact-grid,.banner-box{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .price-card.featured{transform:none}
}
@media(max-width:520px){
  .g4,.process,.net-grid{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  .section-head h2{font-size:25px}
  .stat-num{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
}