:root{
    --primary:#2980FE;
    --primary-dark:#1769dc;
    --text:#1e293b;
    --muted:#64748b;
    --soft:#f4f7fb;
    --soft-blue:#eef6ff;
    --line:#dbe5f0;
    --white:#ffffff;
    --deep:#0f172a;
    --shadow:0 18px 50px rgba(41,128,254,.10);
    --radius:26px;
}
*{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:linear-gradient(180deg,#ffffff 0%,#f8fbff 48%,#ffffff 100%);
    line-height:1.72;
    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(18px);
    border-bottom:1px solid rgba(219,229,240,.8);
}
.header-inner{
    width:min(1180px,calc(100% - 28px));
    margin:0 auto;
    min-height:72px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
}
.logo,.footer-logo{
    display:flex;
    align-items:center;
    gap:10px;
    font-weight:800;
    letter-spacing:.02em;
    color:var(--deep);
}
.logo img,.footer-logo img{width:34px;height:34px;object-fit:contain}
.site-nav{
    display:none;
    position:absolute;
    left:14px;
    right:14px;
    top:72px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    padding:14px;
    box-shadow:var(--shadow);
}
.site-nav.is-open{display:grid}
.site-nav a{
    padding:12px 14px;
    color:#334155;
    border-radius:14px;
    font-size:15px;
}
.site-nav a:hover{background:var(--soft-blue);color:var(--primary)}
.nav-toggle{
    width:44px;
    height:44px;
    border:1px solid var(--line);
    border-radius:14px;
    background:#fff;
    display:grid;
    place-items:center;
    gap:0;
    padding:10px;
}
.nav-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:#1e293b;
    margin:2px 0;
    border-radius:999px;
}
.web3-hero{
    position:relative;
    overflow:hidden;
    padding:58px 0 34px;
}
.web3-hero:before{
    content:"";
    position:absolute;
    inset:-160px -60px auto auto;
    width:420px;
    height:420px;
    background:radial-gradient(circle,rgba(41,128,254,.22),rgba(41,128,254,0) 68%);
    pointer-events:none;
}
.hero-grid{
    display:grid;
    gap:34px;
    align-items:center;
}
.eyebrow,.category-badge{
    display:inline-flex;
    align-items:center;
    width:max-content;
    max-width:100%;
    padding:7px 12px;
    border-radius:999px;
    background:var(--soft-blue);
    color:var(--primary);
    border:1px solid rgba(41,128,254,.16);
    font-weight:700;
    font-size:13px;
}
h1,h2,h3{line-height:1.22;color:var(--deep);margin:0 0 14px}
h1{font-size:clamp(34px,8vw,62px);letter-spacing:-.04em}
h2{font-size:clamp(26px,5vw,40px);letter-spacing:-.03em}
h3{font-size:20px}
p{margin:0 0 16px;color:var(--muted)}
.hero-copy .lead,.page-hero .lead{font-size:18px;color:#475569;max-width:650px}
.download-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:50px;
    min-width:138px;
    padding:13px 24px;
    border-radius:999px;
    background:var(--primary);
    color:#fff;
    font-weight:800;
    box-shadow:0 12px 28px rgba(41,128,254,.25);
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);box-shadow:0 18px 36px rgba(41,128,254,.30)}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:24px 0}
.security-tags,.floating-tags,.mini-tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}
.security-tags span,.floating-tags span,.mini-tags span,.pill{
    display:inline-flex;
    align-items:center;
    padding:8px 11px;
    border-radius:999px;
    background:#fff;
    border:1px solid var(--line);
    color:#475569;
    font-size:13px;
    box-shadow:0 8px 24px rgba(15,23,42,.05);
}
.hero-visual{
    position:relative;
    min-height:330px;
    border-radius:32px;
    background:
        radial-gradient(circle at 20% 18%,rgba(41,128,254,.16),transparent 28%),
        linear-gradient(145deg,#ffffff,#eef6ff);
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    padding:24px;
    display:grid;
    place-items:center;
}
.hero-device{
    max-height:430px;
    margin:0 auto;
    filter:drop-shadow(0 24px 34px rgba(15,23,42,.15));
}
.floating-tags{position:absolute;inset:18px;align-content:space-between;justify-content:space-between;pointer-events:none}
.floating-tags span{background:rgba(255,255,255,.88)}
.section{padding:54px 0}
.section-head{max-width:740px;margin:0 auto 26px;text-align:center}
.ecosystem-nav,.category-grid,.risk-grid,.faq-grid,.cards-grid{
    display:grid;
    gap:16px;
}
.ecosystem-card,.info-card,.risk-card,.faq-item,.step-card,.guide-card,.download-step,.safety-panel,.side-panel{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px;
    box-shadow:0 10px 32px rgba(15,23,42,.045);
}
.ecosystem-card{
    min-height:180px;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.ecosystem-card:hover{transform:translateY(-3px);border-color:rgba(41,128,254,.32);box-shadow:var(--shadow)}
.card-index,.step-number{
    width:34px;
    height:34px;
    display:grid;
    place-items:center;
    border-radius:12px;
    background:var(--soft-blue);
    color:var(--primary);
    font-weight:900;
    margin-bottom:14px;
}
.card-link,.text-link{
    color:var(--primary);
    font-weight:800;
}
.feature-block{
    display:grid;
    gap:24px;
    align-items:center;
    border-radius:32px;
    padding:24px;
    border:1px solid var(--line);
    background:#fff;
    box-shadow:var(--shadow);
}
.feature-block.alt,.hardware-wallet-section,.submit-chain-section{
    background:linear-gradient(135deg,#f8fbff,#eef6ff);
}
.feature-media{
    border-radius:28px;
    background:linear-gradient(145deg,#ffffff,#f2f7ff);
    border:1px solid var(--line);
    padding:18px;
    display:grid;
    place-items:center;
    min-height:260px;
}
.feature-media img{max-height:360px;object-fit:contain}
.feature-list,.check-list,.plain-list{
    list-style:none;
    padding:0;
    margin:18px 0 0;
    display:grid;
    gap:10px;
}
.feature-list li,.check-list li,.plain-list li{
    position:relative;
    padding-left:28px;
    color:#475569;
}
.feature-list li:before,.check-list li:before,.plain-list li:before{
    content:"";
    position:absolute;
    left:0;
    top:.65em;
    width:10px;
    height:10px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 0 5px rgba(41,128,254,.10);
}
.privacy-section .privacy-panel{
    display:grid;
    gap:16px;
    background:linear-gradient(135deg,#ffffff,#f5f9ff);
    border:1px solid var(--line);
    border-radius:32px;
    padding:28px;
}
.submit-layout,.developer-layout,.content-layout,.about-grid,.download-layout{
    display:grid;
    gap:24px;
}
.tech-panel{
    background:#0f172a;
    color:#e2e8f0;
    border-radius:28px;
    padding:24px;
    overflow:hidden;
    border:1px solid rgba(41,128,254,.24);
    box-shadow:var(--shadow);
}
.tech-panel p{color:#cbd5e1}
.code-line{
    display:block;
    padding:9px 0;
    border-bottom:1px solid rgba(226,232,240,.10);
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:14px;
}
.code-line strong{color:#93c5fd}
.process-steps{
    display:grid;
    gap:16px;
}
.step-card{
    border-left:4px solid var(--primary);
}
.risk-card{
    border-top:4px solid var(--primary);
}
.risk-card .label{
    display:inline-block;
    padding:4px 9px;
    border-radius:999px;
    background:var(--soft-blue);
    color:var(--primary);
    font-size:12px;
    font-weight:800;
    margin-bottom:10px;
}
.faq-item h3{font-size:18px}
.cta-section{
    margin:54px auto;
    text-align:center;
    border-radius:34px;
    padding:36px 22px;
    background:
      radial-gradient(circle at 18% 18%,rgba(41,128,254,.16),transparent 32%),
      linear-gradient(135deg,#eef6ff,#ffffff);
    border:1px solid var(--line);
}
.page-hero{
    padding:54px 0 28px;
    background:
      radial-gradient(circle at 80% 10%,rgba(41,128,254,.12),transparent 26%),
      linear-gradient(180deg,#ffffff,#f8fbff);
}
.page-hero-inner{
    display:grid;
    gap:20px;
}
.content-body{
    background:#fff;
    border:1px solid var(--line);
    border-radius:32px;
    padding:24px;
    box-shadow:var(--shadow);
}
.side-panel{
    height:max-content;
    background:linear-gradient(180deg,#fff,#f7fbff);
}
.side-panel a{
    display:block;
    padding:12px 0;
    color:var(--primary);
    font-weight:800;
    border-bottom:1px solid var(--line);
}
.side-panel a:last-child{border-bottom:0}
.highlight-box{
    background:var(--soft-blue);
    border:1px solid rgba(41,128,254,.16);
    border-radius:22px;
    padding:18px;
    margin:20px 0;
}
.download-steps{
    display:grid;
    gap:14px;
    counter-reset:downloadStep;
}
.download-step{
    display:flex;
    gap:14px;
    align-items:flex-start;
}
.download-step:before{
    counter-increment:downloadStep;
    content:counter(downloadStep);
    flex:0 0 34px;
    width:34px;
    height:34px;
    display:grid;
    place-items:center;
    border-radius:12px;
    background:var(--soft-blue);
    color:var(--primary);
    font-weight:900;
}
.table-like{
    display:grid;
    gap:10px;
    margin:18px 0;
}
.table-like div{
    display:grid;
    gap:6px;
    padding:14px;
    border:1px solid var(--line);
    border-radius:18px;
    background:#fff;
}
.table-like strong{color:var(--deep)}
.site-footer{
    background:#f8fbff;
    border-top:1px solid var(--line);
    margin-top:48px;
    padding:42px 0 0;
}
.footer-grid{
    display:grid;
    gap:26px;
}
.site-footer h2{font-size:16px;margin-bottom:10px}
.site-footer a:not(.footer-logo){
    display:block;
    color:#475569;
    padding:5px 0;
}
.site-footer p{max-width:420px}
.footer-bottom{
    margin-top:30px;
    padding:18px;
    border-top:1px solid var(--line);
    display:flex;
    flex-direction:column;
    gap:8px;
    align-items:center;
    justify-content:center;
    color:#64748b;
    font-size:13px;
    text-align:center;
}
@media (min-width:640px){
    .ecosystem-nav{grid-template-columns:repeat(2,1fr)}
    .category-grid,.cards-grid,.risk-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:880px){
    .nav-toggle{display:none}
    .site-nav{
        position:static;
        display:flex;
        align-items:center;
        justify-content:flex-end;
        gap:2px;
        padding:0;
        border:0;
        box-shadow:none;
        background:transparent;
        border-radius:0;
    }
    .site-nav a{font-size:14px;padding:9px 10px}
    .hero-grid{grid-template-columns:1.05fr .95fr}
    .feature-block{grid-template-columns:1fr 1fr;padding:34px}
    .feature-block.reverse .feature-copy{order:2}
    .feature-block.reverse .feature-media{order:1}
    .privacy-section .privacy-panel{grid-template-columns:1fr 1.2fr}
    .submit-layout,.developer-layout,.content-layout,.download-layout{grid-template-columns:1.15fr .85fr}
    .about-grid{grid-template-columns:repeat(3,1fr)}
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
    .footer-bottom{flex-direction:row;justify-content:space-between;text-align:left}
}
@media (min-width:1080px){
    .ecosystem-nav{grid-template-columns:repeat(4,1fr)}
    .risk-grid{grid-template-columns:repeat(3,1fr)}
    .category-grid{grid-template-columns:repeat(4,1fr)}
    .cards-grid{grid-template-columns:repeat(3,1fr)}
    .site-nav a{padding:9px 11px}
}
@media (max-width:420px){
    .container{width:min(100% - 24px,1120px)}
    .header-inner{width:min(100% - 20px,1180px)}
    .feature-block,.content-body,.side-panel{padding:18px;border-radius:22px}
    .hero-visual{padding:16px;border-radius:24px}
    .floating-tags{position:static;margin-top:12px}
    .download-btn{width:100%}
    .hero-actions .download-btn{width:auto}
}