:root{
    --bg:#0a0f1c;--card:#111a30;--card2:#0e1626;--border:#1e2a45;
    --text:#e8eef7;--muted:#8fa3bf;--bitget-blue:#1a56db;--web3-purple:#7c3aed;
    --copy-cyan:#06b6d4;--safe-green:#10b981;--btc-orange:#f7931a;--white:#ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--copy-cyan);text-decoration:none}
img{max-width:100%;height:auto}
.container{width:min(1200px,92%);margin:0 auto}
/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,15,28,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-container{width:min(1200px,92%);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-size:22px;font-weight:900;color:var(--white);letter-spacing:1px}
.brand span{color:var(--bitget-blue)}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:.3s}
.nav-links a:hover,.nav-links a.active{color:var(--white)}
.nav-toggle{display:none;background:none;border:none;color:var(--white);font-size:24px;cursor:pointer}
/* hero */
.hero,.hero-style,#hero{padding:110px 0 90px;text-align:center;position:relative;background:radial-gradient(ellipse at 20% 20%,rgba(26,86,219,.25),transparent 50%),radial-gradient(ellipse at 80% 30%,rgba(124,58,237,.22),transparent 50%),radial-gradient(ellipse at 50% 90%,rgba(6,182,212,.15),transparent 50%)}
.hero h1,.hero-style h1,#hero h1{font-size:52px;font-weight:900;line-height:1.25;margin-bottom:20px}
.hero h1 .grad,.hero-style h1 .grad,#hero h1 .grad{background:linear-gradient(90deg,var(--bitget-blue),var(--web3-purple),var(--copy-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--muted);max-width:760px;margin:0 auto 30px}
.hero-badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.badge{background:rgba(26,86,219,.15);border:1px solid rgba(26,86,219,.4);color:var(--copy-cyan);padding:6px 16px;border-radius:999px;font-size:14px;font-weight:600}
.btn{display:inline-block;padding:14px 34px;border-radius:10px;font-weight:700;font-size:16px;transition:.3s;cursor:pointer;border:none}
.btn-primary{background:var(--bitget-blue);color:var(--white)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(26,86,219,.4)}
.btn-cta{background:linear-gradient(90deg,var(--web3-purple),var(--bitget-blue));color:var(--white)}
.btn-cta:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(124,58,237,.45)}
.btn-outline{border:1px solid var(--copy-cyan);color:var(--copy-cyan);background:transparent}
.btn-outline:hover{background:rgba(6,182,212,.1)}
.btn-pulse{animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(247,147,26,.55)}70%{box-shadow:0 0 0 16px rgba(247,147,26,0)}100%{box-shadow:0 0 0 0 rgba(247,147,26,0)}}
/* sections */
section{padding:80px 0}
.section-title{font-size:36px;font-weight:900;text-align:center;margin-bottom:14px}
.section-sub{font-size:17px;color:var(--muted);text-align:center;margin-bottom:50px}
/* cards */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid var(--border);border-radius:16px;padding:30px;transition:.35s}
.card:hover{transform:translateY(-6px);border-color:rgba(26,86,219,.5);box-shadow:0 14px 40px rgba(26,86,219,.15)}
.icon{font-size:42px;margin-bottom:14px}
.card h3{font-size:20px;margin-bottom:12px;color:var(--white)}
.card p{font-size:14.5px;color:var(--muted)}
/* stats dashboard */
.stats-dashboard{background:linear-gradient(135deg,rgba(26,86,219,.12),rgba(124,58,237,.12));border:1px solid var(--border);border-radius:20px;padding:40px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{text-align:center}
.stat-num{font-size:44px;font-weight:900;color:var(--btc-orange);line-height:1.2}
.stat-label{color:var(--muted);font-size:14px;margin-top:6px}
/* copy flow animation */
.copy-flow{display:flex;flex-direction:column;gap:16px}
.copy-item{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 18px;position:relative;overflow:hidden}
.copy-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--copy-cyan),var(--safe-green));animation:flowline 2.4s ease-in-out infinite}
@keyframes flowline{0%{transform:translateY(-100%)}50%{transform:translateY(0)}100%{transform:translateY(100%)}}
.copy-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--web3-purple),var(--bitget-blue));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;color:#fff;flex-shrink:0}
.copy-info{flex:1}
.copy-info b{font-size:15px;display:block}
.copy-info small{color:var(--muted)}
.copy-profit{font-weight:800;font-size:16px}
.positive{color:var(--safe-green)}
/* market table */
.market{width:100%;border-collapse:collapse;background:var(--card);border-radius:16px;overflow:hidden;font-size:14.5px}
.market th{background:var(--card2);padding:14px 18px;text-align:left;color:var(--muted);font-weight:600}
.market td{padding:14px 18px;border-top:1px solid var(--border)}
.pair{font-weight:700;color:var(--white)}
.rise{color:var(--safe-green);font-weight:700}
.fall{color:#f1506d;font-weight:700}
/* coin cards */
.coin-chip{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px}
.coin-symbol{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;color:#fff;flex-shrink:0}
.coin-name b{display:block;font-size:15px}
.coin-name small{color:var(--muted);font-size:12px}
/* timeline */
.timeline{position:relative;max-width:780px;margin:0 auto;padding-left:36px}
.timeline::before{content:"";position:absolute;left:10px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--bitget-blue),var(--web3-purple))}
.tl-item{position:relative;padding:18px 0 18px 20px}
.tl-item::before{content:"";position:absolute;left:-31px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--btc-orange);border:3px solid var(--bg)}
.tl-year{color:var(--btc-orange);font-weight:900;font-size:17px}
.tl-item h3{font-size:18px;margin:4px 0 6px}
.tl-item p{color:var(--muted);font-size:14.5px}
/* faq */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;font-size:15.5px;list-style:none;position:relative;padding-right:46px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:24px;color:var(--copy-cyan)}
.faq-item[open] summary::after{content:"-"}
.faq-item p{padding:0 22px 20px;color:var(--muted);font-size:14.5px;margin-top:-6px}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.faq-answer p{margin-bottom:8px;padding:0;margin-top:0}
/* hot words */
.hot-words{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.tag{display:inline-block;background:rgba(26,86,219,.12);border:1px solid rgba(26,86,219,.35);color:var(--copy-cyan);padding:8px 18px;border-radius:999px;font-size:14px;font-weight:600;transition:.3s}
.tag:hover{background:rgba(26,86,219,.25);transform:translateY(-2px)}
/* forms */
.form-row{display:flex;gap:12px;align-items:center}
.form-row .form-group{flex:1;margin-bottom:0}
.contact-form{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:34px;max-width:640px;margin:0 auto}
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card2);color:var(--text);font-size:15px;font-family:inherit;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--bitget-blue)}
/* web3 nodes */
.web3-nodes{position:relative;padding:60px 40px;border:1px solid var(--border);border-radius:20px;background:radial-gradient(circle at 30% 40%,rgba(124,58,237,.15),transparent 55%)}
.node{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--web3-purple);box-shadow:0 0 14px rgba(124,58,237,.9);animation:nodePulse 2.8s ease-in-out infinite}
@keyframes nodePulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.6);opacity:.6}}
/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.fade-in{animation:fadeIn 1s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
/* footer */
.site-footer{background:#070b16;border-top:1px solid var(--border);padding:46px 0 30px;text-align:center}
.footer-links{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}
.footer-links a{color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--copy-cyan)}
.site-footer p{color:var(--muted);font-size:14px}
/* responsive */
@media(max-width:900px){
    .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
    .stats-dashboard{grid-template-columns:repeat(2,1fr)}
    .hero h1{font-size:38px}
    .nav-links{position:fixed;top:68px;right:-100%;flex-direction:column;background:var(--card);width:220px;padding:24px;gap:18px;transition:.35s;border-left:1px solid var(--border);height:calc(100vh - 68px)}
    .nav-links.open{right:0}
    .nav-toggle{display:block}
}
@media(max-width:560px){
    .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
    .stats-dashboard{grid-template-columns:1fr 1fr}
    .hero{padding:70px 0 50px}
    .hero h1{font-size:30px}
    .section-title{font-size:28px}
}