:root{
    --primary:#2980FE;
    --primary-dark:#1766d8;
    --white:#ffffff;
    --bg:#f6f8fc;
    --soft:#eef5ff;
    --soft-2:#f1f5f9;
    --line:#dfe7f3;
    --text:#263241;
    --muted:#667085;
    --deep:#172033;
    --shadow:0 16px 42px rgba(23,43,77,.08);
    --radius:22px;
}
*{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,#ffffff 0%,#f7faff 45%,#ffffff 100%);
    line-height:1.7;
    overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);
}
.nav-shell{
    width:min(1160px,calc(100% - 32px));
    margin:0 auto;
    min-height:66px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);letter-spacing:.2px}
.brand-logo{width:36px;height:36px;object-fit:contain;border-radius:10px}
.brand-text{font-size:1.05rem}
.nav-toggle{display:inline-flex;flex-direction:column;gap:5px;border:0;background:var(--soft);border-radius:12px;padding:11px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--primary);border-radius:5px}
.primary-nav{
    position:absolute;left:16px;right:16px;top:72px;
    display:none;flex-direction:column;gap:8px;
    padding:14px;
    border:1px solid var(--line);
    border-radius:18px;
    background:#fff;
    box-shadow:var(--shadow);
}
.primary-nav.is-open{display:flex}
.primary-nav a{padding:10px 12px;border-radius:12px;color:#4a5568;font-size:.95rem}
.primary-nav a.active,.primary-nav a:hover{background:var(--soft);color:var(--primary)}
main{min-height:60vh}
.container{width:min(1160px,calc(100% - 32px));margin:0 auto}
.narrow{width:min(880px,calc(100% - 32px));margin:0 auto}
.section{padding:56px 0}
.section-soft{background:linear-gradient(180deg,#f7fbff 0%,#eef5ff 100%)}
.section-title{font-size:clamp(1.7rem,4vw,2.55rem);line-height:1.18;margin:0 0 14px;color:var(--deep);letter-spacing:-.6px}
.section-lead{margin:0 0 26px;color:var(--muted);font-size:1.02rem;max-width:760px}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--soft);color:var(--primary);font-weight:700;font-size:.86rem;margin-bottom:14px}
.eyebrow:before,.badge:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary)}
.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 12px 26px rgba(41,128,254,.24);
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
    border:1px solid rgba(41,128,254,.3);
}
.download-btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 16px 32px rgba(41,128,254,.28)}
.product-hero{position:relative;overflow:hidden;padding:58px 0 42px;background:radial-gradient(circle at top right,rgba(41,128,254,.16),transparent 38%),linear-gradient(180deg,#fff 0%,#f7fbff 100%)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
.hero-copy h1{font-size:clamp(2rem,7vw,4rem);line-height:1.08;margin:0 0 18px;color:var(--deep);letter-spacing:-1.4px}
.hero-copy p{font-size:1.05rem;color:var(--muted);margin:0 0 24px;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span,.mini-tag{display:inline-flex;padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#536171;font-size:.88rem}
.app-visual{position:relative;background:linear-gradient(145deg,#ffffff,#eef6ff);border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow);padding:20px;min-height:360px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.app-visual:before{content:"";position:absolute;inset:28px;border-radius:28px;background:linear-gradient(135deg,rgba(41,128,254,.12),rgba(255,255,255,.65));z-index:0}
.hero-product{position:relative;z-index:1;max-height:420px;object-fit:contain;margin:auto}
.floating-card{position:absolute;z-index:2;background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:0 12px 26px rgba(17,24,39,.08);border-radius:18px;padding:12px 14px;color:var(--deep);font-size:.88rem;backdrop-filter:blur(10px)}
.float-asset{left:14px;bottom:24px}.float-cold{right:16px;top:28px}.float-swap{right:18px;bottom:92px}.float-dapp{left:24px;top:42px}
.feature-shortcuts{padding:30px 0 54px;background:#fff}
.shortcut-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.shortcut-card,.feature-card,.category-card,.risk-card,.faq-item,.step-card,.info-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 28px rgba(16,24,40,.05);
}
.shortcut-card{padding:18px;display:flex;flex-direction:column;gap:8px;min-height:145px}
.shortcut-icon{width:34px;height:34px;border-radius:12px;background:var(--soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-weight:900}
.shortcut-card h3,.feature-card h3,.category-card h3,.risk-card h3,.step-card h3{margin:0;color:var(--deep);font-size:1.04rem}
.shortcut-card p,.feature-card p,.category-card p,.risk-card p,.step-card p{margin:0;color:var(--muted);font-size:.94rem}
.text-link{color:var(--primary);font-weight:800;margin-top:auto;display:inline-flex;align-items:center;gap:6px}
.text-link:after{content:"›";font-size:1.2em;line-height:1}
.product-section{padding:62px 0}
.product-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.product-grid.reverse .product-copy{order:1}.product-grid.reverse .product-media{order:2}
.product-media{background:linear-gradient(145deg,#fff,#f2f7ff);border:1px solid var(--line);border-radius:30px;padding:18px;box-shadow:var(--shadow);overflow:hidden}
.product-media img{margin:auto;max-height:430px;object-fit:contain}
.product-copy ul{padding:0;margin:20px 0;list-style:none;display:grid;gap:10px}
.product-copy li{position:relative;padding-left:28px;color:#4b5563}
.product-copy 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,.12)}
.feature-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:22px}
.feature-card{padding:22px}
.feature-card strong{color:var(--primary)}
.process-steps{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}
.step-card{padding:20px;position:relative;overflow:hidden}
.step-num{width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.risk-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:24px}
.risk-card{padding:20px;border-left:4px solid var(--primary)}
.risk-card .advice{display:block;margin-top:9px;color:#3c4858;background:var(--soft-2);padding:10px 12px;border-radius:12px;font-size:.91rem}
.category-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:24px}
.category-card{padding:22px;min-height:165px;display:flex;flex-direction:column;gap:8px}
.faq-list{display:grid;gap:14px;margin-top:22px}
.faq-item{padding:20px}
.faq-item h3{margin:0 0 8px;color:var(--deep);font-size:1.03rem}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:60px 0;background:radial-gradient(circle at top left,rgba(41,128,254,.16),transparent 38%),linear-gradient(135deg,#f7fbff,#eef5ff)}
.cta-box{width:min(900px,calc(100% - 32px));margin:0 auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);padding:34px 22px}
.cta-box h2{margin:0 0 12px;font-size:clamp(1.6rem,4vw,2.4rem);color:var(--deep)}
.cta-box p{margin:0 auto 24px;color:var(--muted);max-width:700px}
.page-hero{padding:54px 0 26px;background:radial-gradient(circle at top right,rgba(41,128,254,.14),transparent 36%),linear-gradient(180deg,#fff,#f7fbff)}
.page-hero h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.12;margin:0 0 14px;color:var(--deep);letter-spacing:-.9px}
.page-hero p{margin:0;color:var(--muted);font-size:1.05rem;max-width:820px}
.content-layout{display:grid;grid-template-columns:1fr;gap:24px;padding:38px 0 62px}
.article-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.article-panel h2{color:var(--deep);margin:0 0 12px;font-size:1.45rem}
.article-panel p{color:#4b5563;margin:0 0 16px}
.article-panel p:last-child{margin-bottom:0}
.side-panel{display:grid;gap:14px;align-content:start}
.info-card{padding:18px}
.info-card h3{margin:0 0 8px;color:var(--deep);font-size:1rem}
.info-card p,.info-card li{color:var(--muted);font-size:.94rem;margin:0}
.info-card ul,.check-list,.number-list{margin:10px 0 0;padding-left:20px;color:var(--muted)}
.check-list li,.number-list li{margin:7px 0}
.notice-box{margin:20px 0;padding:18px;border-radius:20px;background:var(--soft);border:1px solid #cfe2ff;color:#455366}
.download-row{margin-top:24px}
.download-page-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:24px}
.about-values{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
.site-footer{background:#f6f8fc;border-top:1px solid var(--line);padding:34px 0 18px}
.footer-inner{width:min(1160px,calc(100% - 32px));margin:0 auto;display:grid;grid-template-columns:1fr;gap:24px}
.footer-brand{display:flex;gap:14px;align-items:flex-start}.footer-logo{width:42px;height:42px;object-fit:contain;border-radius:12px}
.footer-brand strong{display:block;color:var(--deep);margin-bottom:4px}.footer-brand p{margin:0;color:var(--muted);max-width:520px;font-size:.94rem}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}.footer-links a{color:#536171;font-size:.94rem}.footer-links a:hover{color:var(--primary)}
.footer-bottom{width:min(1160px,calc(100% - 32px));margin:26px auto 0;padding-top:18px;border-top:1px solid var(--line);color:#7b8794;font-size:.88rem}
@media (min-width:640px){
    .shortcut-grid{grid-template-columns:repeat(3,1fr)}
    .feature-grid,.risk-grid,.category-grid,.download-page-grid,.about-values{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
    .article-panel{padding:32px}
}
@media (min-width:920px){
    .nav-toggle{display:none}
    .primary-nav{position:static;display:flex;flex-direction:row;align-items:center;gap:3px;padding:0;border:0;box-shadow:none;background:transparent}
    .primary-nav a{font-size:.93rem;padding:8px 10px}
    .product-hero{padding:82px 0 62px}
    .hero-grid{grid-template-columns:1.05fr .95fr;gap:54px}
    .app-visual{min-height:500px;padding:28px}
    .shortcut-grid{grid-template-columns:repeat(6,1fr)}
    .product-grid{grid-template-columns:1fr 1fr;gap:54px}
    .product-grid.reverse .product-copy{order:2}.product-grid.reverse .product-media{order:1}
    .feature-grid{grid-template-columns:repeat(4,1fr)}
    .process-steps{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(4,1fr)}
    .category-grid{grid-template-columns:repeat(4,1fr)}
    .content-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start}
    .footer-inner{grid-template-columns:1.2fr .8fr;align-items:start}.footer-links{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1120px){
    .primary-nav a{padding:8px 12px}
    .process-steps{grid-template-columns:repeat(6,1fr)}
}