:root{
  --primary:#2980FE;
  --primary-soft:#EAF3FF;
  --bg:#F7FAFE;
  --bg-blue:#F2F7FF;
  --white:#FFFFFF;
  --text:#1F2937;
  --muted:#64748B;
  --line:#E6ECF5;
  --line-strong:#D8E3F1;
  --card:#FFFFFF;
  --shadow:0 18px 50px rgba(31,67,123,.09);
  --shadow-soft:0 10px 30px rgba(41,128,254,.08);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-shell{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#172033;letter-spacing:.2px}.logo-img,.footer-brand img{width:38px;height:38px;object-fit:contain}.brand-text{font-size:18px}.main-nav{display:none;position:absolute;top:72px;left:16px;right:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.main-nav.is-open{display:grid;gap:4px}.main-nav a{padding:10px 12px;border-radius:12px;color:#475569;font-size:14px}.main-nav a:hover,.main-nav a.active{background:var(--primary-soft);color:var(--primary)}.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:14px;padding:8px 12px;font-size:22px;color:#1f2937}
.section{padding:70px 0}.section-light{background:var(--bg-blue)}.section-head{max-width:720px;margin:0 auto 26px;text-align:center}.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:800}.section h1,.page-hero h1{font-size:clamp(34px,8vw,62px);line-height:1.12;margin:18px 0 16px;letter-spacing:-.04em}.section h2,.section-head h2{font-size:clamp(26px,5vw,42px);line-height:1.18;margin:12px 0;color:#172033;letter-spacing:-.03em}.lead{font-size:17px;color:#475569;margin:0 0 24px}.muted{color:var(--muted)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--primary);color:#fff!important;font-weight:800;box-shadow:0 14px 28px rgba(41,128,254,.24);transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(41,128,254,.30)}
.link-arrow{display:inline-flex;align-items:center;color:var(--primary);font-weight:800;margin-top:10px}.link-arrow:after{content:'→';margin-left:6px}
.app-hero{position:relative;overflow:hidden;padding:60px 0 46px;background:radial-gradient(circle at 85% 20%,rgba(41,128,254,.16),transparent 32%),linear-gradient(180deg,#fff 0%,#f5f9ff 100%)}.app-hero:before{content:'';position:absolute;inset:auto -120px -140px auto;width:420px;height:420px;border-radius:50%;background:rgba(41,128,254,.08)}.hero-grid{display:grid;gap:34px;align-items:center;position:relative}.hero-copy .lead{max-width:620px}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.safe-tag{display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#475569;font-size:13px;font-weight:700}.hero-visual{position:relative;min-height:420px;border-radius:32px;background:linear-gradient(145deg,#ffffff,#edf5ff);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;padding:28px;overflow:hidden}.hero-visual:after{content:'';position:absolute;width:260px;height:260px;background:rgba(41,128,254,.12);border-radius:60px;transform:rotate(18deg);right:4%;top:8%}.app-shot{position:relative;z-index:2;max-height:520px;object-fit:contain;filter:drop-shadow(0 24px 36px rgba(30,64,121,.16))}.floating-card{position:relative;z-index:3;background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:var(--shadow-soft);border-radius:20px;padding:14px;margin:10px 0}.floating-card strong{display:block;color:#172033}.floating-card span{font-size:13px;color:var(--muted)}.hero-float-wrap{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;margin-top:14px}.hero-float-wrap .floating-card{margin:0}.ability-bar{display:grid;grid-template-columns:1fr;gap:12px;margin-top:24px}.ability-item{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-soft);position:relative;overflow:hidden}.ability-item:before{content:'';position:absolute;left:20px;top:0;width:44px;height:4px;border-radius:0 0 999px 999px;background:var(--primary)}.ability-item h3{margin:8px 0 4px;font-size:18px}.ability-item p{margin:0;color:var(--muted);font-size:14px}
.feature-showcase,.ecosystem-grid,.risk-grid,.faq-grid,.info-grid{display:grid;grid-template-columns:1fr;gap:18px}.feature-card,.eco-card,.risk-card,.faq-item,.info-card,.step-card,.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-soft)}.feature-card{min-height:330px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.feature-card h3,.eco-card h3,.risk-card h3,.info-card h3,.step-card h3{margin:0 0 8px;font-size:21px;color:#172033}.feature-card p,.eco-card p,.risk-card p,.info-card p,.step-card p{margin:0;color:var(--muted)}.feature-card img{max-height:210px;object-fit:contain;margin:18px auto -6px}.feature-card:nth-child(2),.feature-card:nth-child(4){background:linear-gradient(180deg,#fff 0%,#f3f8ff 100%)}
.product-section{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}.product-section .visual-panel{background:linear-gradient(145deg,#f7fbff,#fff);border:1px solid var(--line);border-radius:28px;padding:22px;min-height:280px;display:flex;align-items:center;justify-content:center}.product-section img{max-height:440px;object-fit:contain}.check-list{display:grid;gap:12px;margin:18px 0 0;padding:0;list-style:none}.check-list li{padding-left:28px;position:relative;color:#475569}.check-list li:before{content:'✓';position:absolute;left:0;top:0;color:var(--primary);font-weight:900}.cold-wallet-panel{background:linear-gradient(145deg,#f2f7ff,#fff)}.swap-panel{background:#fff}.dapp-panel{background:linear-gradient(145deg,#fff,#f5f9ff)}.mini-panel{display:grid;gap:12px;margin-top:16px}.mini-panel div{border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff}.mini-panel strong{display:block;color:#172033}.mini-panel span{font-size:14px;color:var(--muted)}
.process-steps{display:grid;grid-template-columns:1fr;gap:14px}.step-number{display:inline-flex;width:38px;height:38px;border-radius:14px;background:var(--primary-soft);color:var(--primary);align-items:center;justify-content:center;font-weight:900;margin-bottom:12px}.risk-card{border-top:4px solid var(--primary)}.risk-card b{display:block;margin-top:10px;color:#172033}.cta-section{padding:64px 24px;text-align:center;border-radius:32px;background:radial-gradient(circle at 70% 20%,rgba(41,128,254,.17),transparent 30%),linear-gradient(145deg,#eef6ff,#fff);border:1px solid var(--line);box-shadow:var(--shadow)}.cta-section p{max-width:680px;margin:0 auto 22px;color:#475569}.page-hero{padding:56px 0 26px;background:linear-gradient(180deg,#fff,#f7fbff)}.page-hero .container{max-width:930px}.page-layout{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow-soft)}.article-card h2{font-size:24px;margin:18px 0 10px}.article-card p{color:#475569}.note-box{padding:18px;border-radius:20px;background:var(--primary-soft);border:1px solid #d7e9ff;color:#315271}.guide-list{display:grid;gap:12px;margin:18px 0;padding:0;list-style:none}.guide-list li{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px}.guide-list b{color:#172033}.aside-card{position:sticky;top:92px}.aside-card a{display:block;border-bottom:1px solid var(--line);padding:10px 0;color:#475569}.aside-card a:last-child{border-bottom:0}.aside-card a:hover{color:var(--primary)}.faq-item h3{margin:0 0 10px}.faq-item p{margin:0;color:#475569}.download-page-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:34px;box-shadow:var(--shadow)}.download-steps{counter-reset:item;display:grid;gap:12px;text-align:left;margin:26px auto 0;max-width:760px}.download-steps div{counter-increment:item;background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:16px 16px 16px 54px;position:relative}.download-steps div:before{content:counter(item);position:absolute;left:16px;top:16px;width:26px;height:26px;border-radius:10px;background:var(--primary);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}.site-footer{background:#172033;color:#dbe6f6;padding:46px 0 24px;margin-top:70px}.footer-grid{display:grid;grid-template-columns:1fr;gap:26px}.site-footer h3{color:#fff;margin:0 0 12px}.site-footer a{display:block;color:#dbe6f6;margin:8px 0}.footer-brand{color:#fff;margin-bottom:12px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#9fb0c6;font-size:13px}.footer-grid p{color:#b9c7da;margin:0}.simple-cards{display:grid;gap:16px}.simple-cards .info-card{box-shadow:none}.text-center{text-align:center}.wide-copy{max-width:850px;margin:0 auto}.kbd{display:inline-block;padding:2px 8px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#475569;font-size:13px}
@media (min-width:640px){.ability-bar{grid-template-columns:repeat(2,1fr)}.ecosystem-grid{grid-template-columns:repeat(2,1fr)}.risk-grid,.faq-grid,.info-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.article-card{padding:34px}.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
@media (min-width:900px){.nav-toggle{display:none}.main-nav{display:flex;position:static;align-items:center;gap:4px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}.main-nav a{font-size:14px}.app-hero{padding:88px 0 60px}.hero-grid{grid-template-columns:1.02fr .98fr}.hero-visual{min-height:620px}.hero-float-wrap{display:block;position:absolute;inset:0;pointer-events:none}.hero-float-wrap .floating-card{position:absolute;max-width:190px}.hero-float-wrap .floating-card:nth-child(1){top:38px;left:18px}.hero-float-wrap .floating-card:nth-child(2){top:150px;right:18px}.hero-float-wrap .floating-card:nth-child(3){bottom:112px;left:4px}.hero-float-wrap .floating-card:nth-child(4){bottom:42px;right:36px}.ability-bar{grid-template-columns:repeat(5,1fr)}.feature-showcase{grid-template-columns:repeat(2,1fr)}.feature-card{padding:30px}.product-section{grid-template-columns:1fr 1fr;padding:38px}.product-section.reverse .visual-panel{order:-1}.cold-wallet-panel.reverse .visual-panel{order:2}.swap-panel .visual-panel{order:2}.dapp-panel{grid-template-columns:1.1fr .9fr}.ecosystem-grid{grid-template-columns:repeat(4,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 300px}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}.section{padding:88px 0}.page-hero{padding:72px 0 34px}.article-card{padding:42px}}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.hero-float-wrap{grid-template-columns:1fr}.download-btn{width:100%}.section{padding:56px 0}.feature-card,.eco-card,.risk-card,.faq-item,.info-card,.step-card{padding:20px}.page-hero h1,.section h1{font-size:34px}.hero-visual{padding:18px;min-height:350px}}