:root{
    --primary:#2980FE;
    --primary-soft:#EAF3FF;
    --primary-light:#F5F9FF;
    --white:#FFFFFF;
    --bg:#F7F9FC;
    --line:#E6EBF2;
    --text:#1F2937;
    --muted:#667085;
    --deep:#111827;
    --card:#FFFFFF;
    --shadow:0 18px 48px rgba(31,41,55,.08);
    --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#fff 0%,#f7f9fc 46%,#fff 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;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,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);letter-spacing:.02em}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:contain}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--deep);font-size:22px}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:78px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:12px;grid-template-columns:1fr 1fr;gap:6px}
.site-nav.is-open{display:grid}
.site-nav a{padding:10px 12px;border-radius:12px;color:#344054;font-size:14px}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.section{padding:64px 0}
.section-tight{padding:42px 0}
.section-title{font-size:30px;line-height:1.25;margin:0 0 14px;color:var(--deep);letter-spacing:-.03em}
.section-kicker,.badge{display:inline-flex;align-items:center;gap:8px;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(41,128,254,.16);border-radius:999px;padding:6px 12px;font-weight:700;font-size:13px;margin-bottom:14px}
.section-desc{color:var(--muted);max-width:760px;margin:0 0 28px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 14px 28px rgba(41,128,254,.22);transition:transform .2s ease,box-shadow .2s ease;border:0;cursor:pointer}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(41,128,254,.3)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:800;margin-top:14px}
.link-arrow:after{content:'→'}
.web3-hero{padding:64px 0 40px;background:radial-gradient(circle at 20% 10%,rgba(41,128,254,.14),transparent 32%),linear-gradient(135deg,#fff 0%,#f3f8ff 100%);position:relative;overflow:hidden}
.web3-hero:after{content:'';position:absolute;right:-110px;top:80px;width:260px;height:260px;border-radius:50%;background:rgba(41,128,254,.1);filter:blur(20px)}
.hero-grid{display:grid;gap:36px;align-items:center;position:relative;z-index:1}
.hero-copy h1{font-size:42px;line-height:1.15;letter-spacing:-.05em;color:var(--deep);margin:0 0 18px}
.hero-copy p{color:var(--muted);font-size:17px;margin:0 0 24px;max-width:660px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 0}
.hero-tags span{background:#fff;border:1px solid var(--line);color:#344054;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
.hero-visual{position:relative;background:rgba(255,255,255,.75);border:1px solid rgba(230,235,242,.9);border-radius:32px;padding:24px;box-shadow:var(--shadow)}
.hero-phone{width:min(340px,80%);margin:0 auto;filter:drop-shadow(0 30px 38px rgba(31,41,55,.14))}
.floating-card{position:relative;margin-top:12px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px 16px;box-shadow:0 14px 32px rgba(31,41,55,.07)}
.floating-card strong{display:block;color:var(--deep);font-size:14px}.floating-card span{display:block;color:var(--muted);font-size:12px}
.floating-stack{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.ecosystem-nav{display:grid;grid-template-columns:1fr;gap:16px}
.ecosystem-card,.service-card,.info-card,.risk-card,.faq-item,.step-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(31,41,55,.04)}
.ecosystem-card{position:relative;overflow:hidden;min-height:172px}.ecosystem-card:before{content:'';position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),rgba(41,128,254,.18))}
.ecosystem-card h3,.service-card h3,.info-card h3,.risk-card h3,.faq-item h3,.step-card h3{margin:0 0 10px;color:var(--deep);line-height:1.35}
.ecosystem-card p,.service-card p,.info-card p,.risk-card p,.faq-item p,.step-card p{margin:0;color:var(--muted)}
.feature-split{display:grid;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}
.feature-split.soft{background:linear-gradient(135deg,#f7fbff 0%,#fff 100%)}
.feature-media{background:var(--primary-light);border:1px solid var(--line);border-radius:28px;padding:20px;min-height:260px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.feature-media img{max-height:360px;object-fit:contain;margin:auto}
.check-list{display:grid;gap:12px;margin:20px 0 0;padding:0;list-style:none}
.check-list li{display:flex;gap:10px;color:#475467}.check-list li:before{content:'✓';flex:0 0 24px;width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:13px}
.web3-section,.hardware-wallet-section,.digital-assets-section,.swap-section,.privacy-section,.submit-chain-section,.developer-center-section{position:relative}
.privacy-panel{display:grid;gap:16px;background:linear-gradient(135deg,#f5f9ff,#fff);border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow)}
.privacy-tags{display:flex;flex-wrap:wrap;gap:10px}.privacy-tags span{border:1px solid rgba(41,128,254,.2);background:#fff;color:var(--primary);padding:8px 12px;border-radius:999px;font-weight:700;font-size:13px}
.submit-grid,.developer-grid,.category-grid{display:grid;gap:18px}.code-panel{background:#172033;color:#eaf3ff;border-radius:24px;padding:20px;font-family:"SFMono-Regular",Consolas,monospace;overflow:hidden}.code-panel span{display:block;color:#8fbfff;margin:6px 0}.code-panel b{color:#fff;font-weight:700}
.process-steps{display:grid;gap:16px}.step-card{position:relative;padding-left:70px}.step-num{position:absolute;left:22px;top:22px;width:34px;height:34px;border-radius:13px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}
.risk-grid{display:grid;gap:16px}.risk-card{border-left:4px solid var(--primary)}.risk-card .suggest{margin-top:10px;color:#344054;font-weight:700}
.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h3{font-size:18px}
.cta-section{padding:64px 0;background:linear-gradient(135deg,#eef6ff 0%,#fff 100%)}.cta-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:34px;box-shadow:var(--shadow)}.cta-card h2{margin:0 0 12px;font-size:30px;color:var(--deep)}.cta-card p{margin:0 auto 22px;color:var(--muted);max-width:680px}
.page-hero{padding:54px 0 28px;background:linear-gradient(135deg,#fff,#f4f8ff)}.page-hero h1{font-size:36px;line-height:1.22;margin:0 0 14px;color:var(--deep);letter-spacing:-.04em}.page-hero p{color:var(--muted);margin:0;max-width:820px}
.content-layout{display:grid;gap:24px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow)}.article-card h2{font-size:24px;color:var(--deep);margin:0 0 12px}.article-card p{color:#475467;margin:0 0 16px}.article-card p:last-child{margin-bottom:0}.side-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:0 10px 28px rgba(31,41,55,.05);position:sticky;top:96px}.side-panel h3{margin:0 0 12px}.side-panel a{display:block;color:var(--primary);font-weight:800;margin:10px 0}.mini-grid{display:grid;gap:14px;margin-top:20px}.mini-card{background:var(--primary-light);border:1px solid var(--line);border-radius:20px;padding:16px}.mini-card strong{display:block;color:var(--deep);margin-bottom:6px}.mini-card span{color:var(--muted);font-size:14px}
.download-page .steps{counter-reset:item;display:grid;gap:16px;margin:26px 0}.download-page .steps div{counter-increment:item;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px 18px 18px 60px;position:relative}.download-page .steps div:before{content:counter(item);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:11px;background:var(--primary);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center}
.site-footer{background:#111827;color:#cbd5e1;padding:46px 0 22px;margin-top:0}.footer-grid{display:grid;gap:24px}.footer-logo{font-size:24px;font-weight:900;color:#fff;margin-bottom:10px}.site-footer h3{color:#fff;margin:0 0 12px}.site-footer a{display:block;color:#cbd5e1;margin:8px 0}.site-footer a:hover{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#94a3b8;font-size:14px}
@media (min-width:640px){.ecosystem-nav{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.submit-grid,.developer-grid,.category-grid,.mini-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:920px){.nav-toggle{display:none}.site-nav{display:flex;position:static;background:transparent;border:0;box-shadow:none;border-radius:0;padding:0;gap:4px;align-items:center}.site-nav a{font-size:14px}.web3-hero{padding:88px 0 58px}.hero-grid{grid-template-columns:1.02fr .98fr}.hero-copy h1{font-size:60px}.floating-stack{grid-template-columns:repeat(2,1fr)}.ecosystem-nav{grid-template-columns:repeat(4,1fr)}.ecosystem-card:nth-child(1),.ecosystem-card:nth-child(7){grid-column:span 2}.feature-split{grid-template-columns:1fr 1fr;padding:34px}.feature-split.reverse .feature-media{order:-1}.section-title{font-size:40px}.content-layout{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:1.6fr 1fr 1fr}.developer-grid{grid-template-columns:1fr 1fr}.submit-grid{grid-template-columns:1.2fr .8fr}.risk-grid{grid-template-columns:repeat(4,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.page-hero h1{font-size:48px}}
@media (max-width:380px){.container{width:min(100% - 24px,1120px)}.hero-copy h1{font-size:34px}.section-title{font-size:26px}.feature-split,.article-card,.cta-card{border-radius:22px;padding:20px}.floating-stack{grid-template-columns:1fr}.download-btn{width:100%}}