:root{
    --primary:#2980FE;
    --primary-dark:#1267df;
    --white:#ffffff;
    --bg:#f5f8fc;
    --soft:#eef6ff;
    --line:#dfe7f2;
    --text:#1f2937;
    --muted:#64748b;
    --deep:#111827;
    --radius:24px;
    --shadow:0 18px 45px rgba(41,128,254,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:var(--bg);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,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);font-size:18px;white-space:nowrap}
.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:var(--white);color:var(--deep);font-size:22px}
.site-nav{position:absolute;top:68px;left:16px;right:16px;display:none;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
.site-nav.open{display:flex}
.site-nav a{padding:10px 12px;border-radius:14px;color:var(--muted);font-weight:650;font-size:15px}
.site-nav a:hover,.site-nav a.active{background:var(--soft);color:var(--primary)}
main{min-height:60vh}
.section{padding:64px 0}
.section.alt{background:linear-gradient(180deg,#f8fbff 0%,#eef6ff 100%)}
.section-title{max-width:760px;margin:0 auto 28px;text-align:center}
.section-title .eyebrow,.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:800;font-size:14px;background:#eaf3ff;border:1px solid #d5e8ff;border-radius:999px;padding:6px 12px}
h1,h2,h3{margin:0 0 14px;color:var(--deep);line-height:1.18;letter-spacing:-.02em}
h1{font-size:clamp(34px,7vw,62px)}
h2{font-size:clamp(26px,4.5vw,42px)}
h3{font-size:20px}
p{margin:0 0 14px;color:var(--muted)}
.portal-hero{position:relative;overflow:hidden;background:radial-gradient(circle at 12% 12%,rgba(41,128,254,.18),transparent 32%),linear-gradient(135deg,#fff 0%,#f2f7ff 62%,#eaf3ff 100%);padding:56px 0 34px;border-bottom:1px solid var(--line)}
.portal-hero:after{content:"";position:absolute;width:360px;height:360px;right:-160px;top:28px;background:rgba(41,128,254,.12);border-radius:50%;filter:blur(8px)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
.hero-copy p{font-size:17px;max-width:620px}
.hero-tags,.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
.hero-tags span,.tag-row span{display:inline-flex;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:var(--muted);font-size:14px;box-shadow:0 8px 24px rgba(15,23,42,.04)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;background:var(--primary);color:#fff!important;border-radius:999px;font-weight:800;box-shadow:0 14px 30px rgba(41,128,254,.25);transition:transform .2s ease,background .2s ease,box-shadow .2s ease}
.download-btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 18px 36px rgba(41,128,254,.30)}
.hero-visual{position:relative;min-height:360px;display:flex;align-items:center;justify-content:center;padding:22px;background:rgba(255,255,255,.58);border:1px solid rgba(223,231,242,.75);border-radius:32px;box-shadow:var(--shadow)}
.hero-phone{max-height:520px;object-fit:contain;filter:drop-shadow(0 28px 38px rgba(15,23,42,.18))}
.float-card{position:absolute;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:0 16px 36px rgba(15,23,42,.10);font-size:13px;color:var(--muted)}
.float-card strong{display:block;color:var(--deep);font-size:15px}.float-card.one{left:12px;top:18px}.float-card.two{right:14px;top:82px}.float-card.three{left:20px;bottom:36px}.float-card.four{right:18px;bottom:26px}
.channel-nav{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}
.channel-card,.feature-card,.risk-card,.category-card,.faq-item,.notice-card,.step-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(15,23,42,.04)}
.channel-card{padding:18px;position:relative;overflow:hidden}.channel-card:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--primary)}
.channel-card span,.mini-label{display:inline-flex;color:var(--primary);font-size:12px;font-weight:800;background:#eaf3ff;border-radius:999px;padding:4px 9px;margin-bottom:10px}.channel-card h3{font-size:18px}.channel-card p{font-size:14px}.text-link{display:inline-flex;margin-top:8px;color:var(--primary);font-weight:800}.text-link:after{content:"→";margin-left:6px}
.split-feature{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow);margin:26px 0}
.split-feature.reverse .feature-media{order:-1}.feature-media{display:flex;align-items:center;justify-content:center;min-height:280px;border-radius:28px;background:linear-gradient(135deg,#f8fbff,#eaf3ff);padding:20px;overflow:hidden}.feature-media img{max-height:390px;object-fit:contain}.feature-content ul,.check-list{padding:0;margin:18px 0;list-style:none;display:grid;gap:10px}.feature-content li,.check-list li{position:relative;padding-left:28px;color:var(--text)}.feature-content li:before,.check-list li:before{content:"";position:absolute;left:0;top:.65em;width:10px;height:10px;background:var(--primary);border-radius:50%;box-shadow:0 0 0 5px #eaf3ff}
.wallet-split .feature-media{background:linear-gradient(135deg,#fff,#eaf3ff)}.cold-wallet-split{background:linear-gradient(135deg,#fff,#f2f7ff)}.swap-split .feature-media{background:linear-gradient(135deg,#fff,#edf8ff)}.dapp-split{background:linear-gradient(135deg,#fff,#f5f8fc)}
.process-steps{display:grid;grid-template-columns:1fr;gap:14px}.step-card{padding:20px}.step-no{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}.risk-grid,.category-grid,.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}.risk-card{padding:20px;border-left:4px solid var(--primary)}.risk-card b{display:block;color:var(--deep);margin-bottom:8px}.risk-card small{display:block;color:var(--muted);margin-top:8px}.category-card{padding:20px}.category-card h3{display:flex;align-items:center;gap:8px}.category-card h3:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--primary)}
.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h3{font-size:18px}.cta-section{padding:54px 0;background:linear-gradient(135deg,#eaf3ff 0%,#fff 58%,#f5f8fc 100%)}.cta-box{text-align:center;background:var(--white);border:1px solid var(--line);border-radius:32px;padding:34px 22px;box-shadow:var(--shadow);max-width:880px;margin:auto}.cta-box p{max-width:620px;margin:0 auto 22px}
.page-hero{padding:58px 0 34px;background:linear-gradient(135deg,#fff 0%,#eef6ff 100%);border-bottom:1px solid var(--line)}.page-hero .container{max-width:940px}.page-hero p{font-size:17px}.content-layout{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}.article-card{background:var(--white);border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}.article-card h2{font-size:28px;margin-top:12px}.side-panel{background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line);border-radius:28px;padding:22px;position:sticky;top:92px}.info-grid{display:grid;grid-template-columns:1fr;gap:14px;margin:22px 0}.notice-card{padding:18px}.notice-card strong{display:block;color:var(--deep);margin-bottom:6px}.ordered{counter-reset:item;list-style:none;padding:0;margin:18px 0;display:grid;gap:12px}.ordered li{counter-increment:item;background:#f8fbff;border:1px solid var(--line);border-radius:18px;padding:14px 14px 14px 54px;position:relative}.ordered li:before{content:counter(item);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}.single-download{margin-top:24px}.download-page .article-card{text-align:center}.download-page .ordered{text-align:left}.about-grid{display:grid;grid-template-columns:1fr;gap:16px}.about-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px}.faq-page .faq-item{box-shadow:none}.site-footer{background:#111827;color:#d1d5db;padding:44px 0 22px}.site-footer p,.site-footer a{color:#aeb8c7}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:12px}.footer-brand img{width:36px;height:36px;border-radius:12px}.site-footer h3{color:#fff;font-size:16px}.site-footer a{display:block;margin:8px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:#9ca3af}
@media (min-width:640px){.channel-nav,.risk-grid,.category-grid,.feature-grid,.info-grid,.about-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{position:static;display:flex!important;flex-direction:row;align-items:center;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none;gap:2px}.site-nav a{font-size:14px;padding:8px 10px}.portal-hero{padding:84px 0 42px}.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:48px}.hero-copy p{font-size:18px}.channel-nav{grid-template-columns:repeat(3,1fr)}.split-feature{grid-template-columns:1fr 1fr;padding:36px;margin:34px 0}.split-feature.reverse .feature-media{order:2}.feature-content{padding:10px 6px}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 320px}.article-card{padding:34px}.footer-grid{grid-template-columns:1.4fr .8fr .8fr}.footer-bottom{flex-direction:row;justify-content:space-between}.section{padding:84px 0}.about-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1100px){.site-nav a{padding:9px 13px}.float-card.one{left:28px}.float-card.two{right:26px}.float-card.three{left:40px}.float-card.four{right:38px}}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.hero-visual{min-height:300px;border-radius:26px}.float-card{position:static;margin:6px;display:inline-block}.hero-visual{flex-wrap:wrap}.download-btn{width:100%}.article-card,.split-feature{padding:20px;border-radius:24px}.section{padding:48px 0}}