/* Tokenim 官方静态站样式（简洁高端风格，响应式） */
:root{
  --bg:#e8f4ff;--card:#ffffff;--glass:rgba(255,255,255,0.65);
  --accent:#1f8edb;--muted:#6b7b8a;--glass-2:rgba(255,255,255,0.5);
  --maxw:1200px;--radius:18px;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,#f7fbff 0%,#d9e7f5 60%);color:#0f2236;-webkit-font-smoothing:antialiased;font-family:var(--font);line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}

/* NAV */
.nav-wrap{position:sticky;top:0;backdrop-filter:blur(14px);background:rgba(246,250,255,0.88);border-bottom:1px solid rgba(31,142,219,0.1);z-index:40}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:36px;height:36px;border-radius:10px}
.brand span{font-weight:700;font-size:18px;color:#0f2236}
.nav-links{display:flex;gap:18px;align-items:center}
.nav-links a{padding:8px 10px;border-radius:10px;color:#4c657d;font-weight:500}
.nav-links a:hover,.nav-links a.active{background:rgba(31,142,219,0.12);color:var(--accent)}
#burger{display:none;background:none;border:0;padding:6px}
#burger span{display:block;width:22px;height:2px;background:#4c657d;margin:4px 0;border-radius:2px}

/* HERO */
.hero{position:relative;min-height:72vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-bg video{width:100%;height:100%;object-fit:cover;filter:contrast(1.05) saturate(1.1);opacity:0.45}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(248,250,255,0.75),rgba(227,238,249,0.75));mix-blend-mode:multiply}
#particles{position:absolute;inset:0;z-index:1}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:60px 20px;display:grid;grid-template-columns:1fr 480px;gap:28px}
.hero-left h1{font-size:42px;margin:0 0 14px;color:#0f2236;line-height:1.05}
.hero-left p{color:#4f697f;max-width:520px;font-size:16px}
.hero-left .lead{color:#375270;font-size:15px;margin-top:10px}
.hero-cta{margin-top:22px;display:flex;gap:12px}
.btn{padding:12px 18px;border-radius:14px;border:1px solid rgba(31,142,219,0.16);background:#ffffff;color:#0f2236;cursor:pointer;transition:all .3s ease}
.btn.primary{background:var(--accent);color:#ffffff;box-shadow:0 16px 32px rgba(31,142,219,0.18);border-color:transparent}
.btn.ghost{background:rgba(255,255,255,0.88);border:1px solid rgba(31,142,219,0.15);color:#22405e}
.hero-features{display:grid;grid-template-columns:repeat(3,minmax(120px,1fr));gap:12px;margin-top:18px;color:#4f697f;list-style:none;padding:0}
.hero-features li{background:rgba(255,255,255,0.72);padding:12px 14px;border-radius:12px;box-shadow:0 10px 25px rgba(31,142,219,0.06)}

.hero-right{display:flex;align-items:center;justify-content:center}
.card-layer{position:relative;width:420px;height:360px}
.float-card{position:absolute;background:rgba(255,255,255,0.96);border-radius:18px;padding:16px;border:1px solid rgba(31,142,219,0.12);color:#0f2236;transition:transform .45s cubic-bezier(.2,.9,.2,1);box-shadow:0 18px 40px rgba(31,142,219,0.12)}
.card-1{left:0;top:10px;width:230px;transform:translateZ(0) translateY(0)}
.card-2{right:10px;top:40px;width:180px}
.phone-frame{position:absolute;left:80px;bottom:10px;width:260px;height:360px;border-radius:32px;overflow:hidden;border:1px solid rgba(31,142,219,0.14);box-shadow:0 25px 45px rgba(31,142,219,0.14);perspective:1200px}
.phone-deck{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform 0.8s cubic-bezier(.2,.9,.2,1)}
.deck-img{position:absolute;left:0;top:0;width:100%;height:100%;object-fit:cover;transform-origin:center center;opacity:0;transition:transform .8s,opacity .5s}
.deck-img.visible{opacity:1}
.deck-controls{position:absolute;left:50%;transform:translateX(-50%);bottom:10px;display:flex;gap:6px}
.deck-controls button{width:10px;height:10px;border-radius:10px;border:0;background:rgba(31,142,219,0.18)}
.deck-controls button.active{background:var(--accent)}

/* sections */
.section{padding:72px 20px}
.split-story .story-row{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr 450px;gap:32px;align-items:center}
.split-story .story-text{padding:20px}
.split-story .story-text h3{color:#0f2236}
.split-story .story-text p{color:#45607c}
.split-story .story-image{border-radius:24px;overflow:hidden;box-shadow:0 20px 40px rgba(31,142,219,0.1);background:#fff}
.split-story .story-image img{width:100%;display:block}
.split-story .card-matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-width:var(--maxw);margin:30px auto 0}
.section-head{max-width:var(--maxw);margin:0 auto 24px;text-align:center}
.section-head h2{margin:0 0 8px;color:#0d2a48}
.section-head p{color:#5b7184;max-width:680px;margin:0 auto}
.enterprise-visual,
.compliance-visual,
.showcase-banner{max-width:760px;margin:0 auto 20px;border-radius:24px;overflow:hidden;box-shadow:0 22px 48px rgba(31,142,219,0.1)}
.enterprise-visual img,
.compliance-visual img,
.showcase-banner img{width:100%;display:block}
.enterprise-visual,
.compliance-visual{padding:12px;background:rgba(255,255,255,0.92)}
@media (max-width:980px){
  .split-story .story-row{grid-template-columns:1fr;}
  .section .card-matrix{grid-template-columns:1fr;}
}
.card-matrix{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.p-card{background:#ffffff;padding:24px;border-radius:20px;border:1px solid rgba(31,142,219,0.14);box-shadow:0 12px 34px rgba(31,142,219,0.08);color:#0f2236}
.p-card:hover{transform:translateY(-6px);box-shadow:0 22px 46px rgba(31,142,219,0.18)}

.app-showcase .app-carousel{display:flex;gap:18px;align-items:center;justify-content:center}
.app-showcase .phone{width:260px;height:520px;border-radius:32px;overflow:hidden;border:1px solid rgba(31,142,219,0.14);background:#f6fbff}
.app-controls{display:flex;justify-content:center;gap:8px;margin-top:12px}
.app-controls button{background:var(--glass);border-radius:8px;padding:8px 10px;border:0;color:var(--accent)}

.security-visual{max-width:var(--maxw);margin:0 auto;display:flex;gap:24px;align-items:flex-start}
.security-visual .sec-left{flex:1}
.security-visual .sec-left img{width:100%;border-radius:12px}
.security-visual .sec-right{flex:1}
.sec-diagram{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.sec-diagram .node{background:linear-gradient(90deg,#e7f2ff,#d9e7f5);padding:16px;border-radius:12px;text-align:center;color:#0f2236;box-shadow:0 10px 30px rgba(31,142,219,0.08)}
.sec-list{list-style:none;padding:0;margin:12px 0 0;color:var(--muted)}

.download-cards{max-width:var(--maxw);margin:0 auto;display:flex;gap:18px;justify-content:center}
.d-card{background:var(--card);padding:16px;border-radius:12px;text-align:center;width:300px;border:1px solid rgba(255,255,255,0.03)}

.timeline{max-width:var(--maxw);margin:24px auto 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.timeline li{display:flex;gap:12px;align-items:center;background:var(--card);padding:14px;border-radius:10px}

.ecos-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.eco-card{background:var(--glass);padding:18px;border-radius:12px;text-align:center}

.news-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.news-card{background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);padding:14px;border-radius:10px}

.faq-list{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.faq-list details{background:var(--card);padding:12px;border-radius:8px}

.contact-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.contact-card{background:var(--card);padding:14px;border-radius:10px}

.site-footer{background:#eaf3fb;padding:40px 20px;color:#47637a;border-top:1px solid rgba(31,142,219,0.18)}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:280px 1fr 1fr 1fr 1fr;gap:32px;align-items:flex-start}
.footer-brand{display:flex;flex-direction:column;gap:18px;min-width:220px}
.footer-brand img{width:40px;height:40px}
.footer-brand p{line-height:1.8;color:#4d6678;font-size:14px;max-width:260px}
.footer-col h5{font-size:14px;color:#0f2236;margin:0 0 12px}
.footer-col p{line-height:1.8;color:#4d6678;margin:0 8px 0 0;font-size:14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;row-gap:10px}
.footer-col li{font-size:14px;line-height:1.8}
.footer-col a{color:var(--muted);transition:color .3s}
.footer-col a:hover{color:var(--accent)}
.footer-seo{display:flex;flex-direction:column;gap:12px;font-size:13px;line-height:1.8;color:#a8bac6}
.footer-seo .muted{font-size:13px;color:#8fa9b8;margin:0}
.footer-seo .seo-kw{background:rgba(255,255,255,0.03);padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,0.04);color:#d8edf4}
.footer-seo .copyright{margin:0;font-size:13px;color:#8fa9b8}
.footer-seo a{color:var(--accent);text-decoration:none}

#topBtn{position:fixed;right:18px;bottom:18px;background:var(--accent);border-radius:8px;border:0;padding:10px;color:#042226;display:none}

/* responsive */
@media(max-width:900px){
  .nav-links{display:none}
  #burger{display:block}
  .hero-inner{grid-template-columns:1fr;gap:20px;padding:36px 16px}
  .hero-right{order:2}
  .card-layer{width:100%;height:auto}
  .split-story .story-row{grid-template-columns:1fr}
  .card-matrix{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .faq-list{grid-template-columns:1fr}
  .ecos-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:480px){
  .brand span{display:none}
  .phone-carousel img{width:100%}
  .app-showcase .phone{width:200px;height:400px}
}