:root{
  --bg:#F5F8FC;--nav:rgba(10,24,42,.94);--title:#102033;--brand:#3B82F6;--deep:#172B4D;--ice:#38BDF8;--cyan:#22D3C5;--violet:#6366F1;--soft:#E9F5FF;--mint:#E8FCFA;--gray:#F0F4F8;--blue:#2563EB;--text:#263748;--muted:#657789;--note:#8C9AAA;--card:#fff;--dark:#12253A;--border:rgba(59,130,246,.14);--shadow:0 20px 50px rgba(29,78,119,.10);--radius:24px;--max:1240px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}img{max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:none}button,a{outline-offset:3px}button:focus-visible,a:focus-visible{outline:3px solid rgba(56,189,248,.45)}
.site-header{position:sticky;top:0;width:100%;z-index:9999;background:var(--nav);backdrop-filter:blur(16px);box-shadow:0 8px 28px rgba(10,35,60,.12);border-bottom:1px solid rgba(255,255,255,.08)}.header-inner{max-width:1280px;margin:0 auto;min-height:72px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:24px}.site-logo{display:flex;align-items:center;flex:0 0 auto}.site-logo img{max-height:44px;max-width:160px;display:block}.nav-core{display:flex;align-items:center;gap:8px;margin-left:auto}.nav-core a{color:#DCEAF7;border-radius:999px;padding:8px 12px;font-size:15px;white-space:nowrap}.nav-core a:hover,.nav-core a.active{color:#fff;background:rgba(56,189,248,.14)}.header-actions{display:flex;align-items:center;gap:10px}.main-btn{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2563EB 0%,#3B82F6 48%,#22D3C5 100%);color:#fff;border-radius:999px;box-shadow:0 14px 32px rgba(37,99,235,.20);padding:11px 19px;font-weight:700;transition:.2s transform,.2s box-shadow}.main-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(37,99,235,.26);color:#fff}.menu-button{width:42px;height:42px;border:1px solid rgba(255,255,255,.16);border-radius:14px;background:rgba(255,255,255,.06);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}.menu-button span{width:18px;height:2px;background:#fff;border-radius:3px}.mobile-menu-button{display:none}.site-main{min-height:60vh}.section{max-width:var(--max);margin:0 auto;padding:76px 24px}.section.tight{padding-top:44px;padding-bottom:44px}.section-kicker{font-size:12px;letter-spacing:.18em;font-weight:800;color:#0284C7;text-transform:uppercase}.section-title,h1,h2,h3{color:var(--title);line-height:1.2}h1{font-size:clamp(42px,6vw,78px);margin:14px 0 18px}h2{font-size:clamp(28px,3.6vw,44px);margin:0 0 18px}h3{font-size:20px;margin:0 0 10px}.lead{font-size:18px;color:var(--muted);max-width:760px}.muted{color:var(--muted)}.text-link{font-weight:700;color:var(--blue)}
.hero-home{position:relative;overflow:hidden;background:radial-gradient(circle at 86% 12%,rgba(56,189,248,.25),transparent 30%),radial-gradient(circle at 18% 18%,rgba(99,102,241,.12),transparent 28%),linear-gradient(135deg,#F9FCFF 0%,#EDF8FF 48%,#EAFBF8 100%)}.hero-home:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(37,99,235,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.035) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}.hero-grid{max-width:var(--max);margin:0 auto;padding:82px 24px 76px;display:grid;grid-template-columns:1.03fr .97fr;gap:54px;align-items:center;position:relative}.hero-copy p{max-width:740px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0}.secondary-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(37,99,235,.2);background:rgba(255,255,255,.72);color:var(--blue);padding:11px 18px;border-radius:999px;font-weight:700}.hero-points{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.hero-points span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.68);border:1px solid rgba(59,130,246,.13);color:var(--deep);font-size:14px}.hero-visual{position:relative;min-height:520px;display:flex;align-items:center;justify-content:center}.hero-visual img{width:100%;height:auto;object-fit:contain;border-radius:28px;box-shadow:0 30px 80px rgba(28,78,120,.16)}.hero-visual .float-img{position:absolute;right:-16px;bottom:-28px;width:42%;border:8px solid rgba(255,255,255,.78);border-radius:28px;background:#fff}
.highlight-strip{max-width:var(--max);margin:0 auto;padding:0 24px}.highlight-inner{transform:translateY(-28px);display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.82);backdrop-filter:blur(15px);border:1px solid rgba(59,130,246,.13);box-shadow:var(--shadow);border-radius:24px;overflow:hidden}.highlight-item{padding:26px 24px;position:relative}.highlight-item+ .highlight-item:before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:1px;background:rgba(59,130,246,.12)}.highlight-item b{display:block;color:var(--title);margin-bottom:8px}.highlight-item p{margin:0;color:var(--muted);font-size:14px}.highlight-item em{font-style:normal;color:#0284C7;font-weight:800;font-size:12px;letter-spacing:.1em}
.channel-wrap{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.channel-pill{max-width:260px;padding:12px 15px;border-radius:20px;background:linear-gradient(135deg,rgba(255,255,255,.9),rgba(233,245,255,.9));border:1px solid var(--border);box-shadow:0 12px 28px rgba(29,78,119,.06)}.channel-pill:nth-child(3n){background:linear-gradient(135deg,rgba(232,252,250,.95),rgba(255,255,255,.9))}.channel-pill strong{color:var(--title);display:block}.channel-pill span{display:block;color:var(--muted);font-size:13px;margin:3px 0 4px}
.media-split,.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.media-split img,.feature-image,.inner-hero img,.content-img{border-radius:26px;box-shadow:var(--shadow);display:block}.media-copy p{color:var(--muted)}.editorial{background:linear-gradient(180deg,#EEF7FF 0%,#F7FBFE 100%)}.editorial-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}.editorial-main,.editorial-side,.zone-card,.info-card,.review-card,.card{background:rgba(255,255,255,.90);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:22px}.editorial-main{padding:28px}.editorial-main img{width:100%;border-radius:20px}.editorial-side{padding:26px;background:linear-gradient(145deg,#fff,#E8FCFA)}.number{font-size:13px;font-weight:900;color:var(--blue);letter-spacing:.14em}.service-list{display:grid;gap:14px;margin-top:18px}.service-list div{padding:14px 0;border-top:1px solid rgba(59,130,246,.12)}
.visual-ribbon{display:grid;grid-template-columns:.78fr 1.22fr;gap:30px;align-items:center}.ribbon-copy p{color:var(--muted)}.ribbon-images{display:grid;grid-template-columns:1.25fr .75fr;grid-template-rows:auto auto;gap:14px}.ribbon-images img{width:100%;height:auto;object-fit:contain;border-radius:22px;box-shadow:var(--shadow);background:#fff}.ribbon-images img:first-child{grid-row:1/3}.ribbon-images img:nth-child(2){transform:translateY(-8px)}.ribbon-images img:nth-child(3){transform:translateY(8px)}
.dual-grid .zone-card{padding:28px}.zone-card.soft-blue{background:linear-gradient(160deg,#fff,#EEF7FF)}.zone-card.soft-mint{background:linear-gradient(160deg,#fff,#E8FCFA)}.zone-card img{width:100%;max-height:none;object-fit:contain;margin-bottom:18px}.zone-card p{color:var(--muted)}.triple-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:22px;align-items:stretch}.triple-card{border-radius:24px;padding:26px;border:1px solid var(--border);box-shadow:var(--shadow);background:#fff}.triple-card:nth-child(2){background:linear-gradient(160deg,#172B4D,#12354A);color:#DCEAF7}.triple-card:nth-child(2) h3,.triple-card:nth-child(2) a{color:#fff}.triple-card:nth-child(3){background:linear-gradient(160deg,#E8FCFA,#fff)}.triple-card img{border-radius:18px;margin-bottom:16px}.timeline{display:grid;gap:12px;margin:16px 0}.timeline div{display:grid;grid-template-columns:74px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12)}.timeline time{font-weight:800;color:#7DD3FC}
.security-zone{background:linear-gradient(135deg,#EAF6FF,#F7FBFE 55%,#E8FCFA)}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.security-card{padding:26px;border-radius:24px;background:rgba(255,255,255,.78);border:1px solid rgba(59,130,246,.16);backdrop-filter:blur(12px)}.security-card img{border-radius:18px;margin-bottom:14px}.security-card ul{padding-left:20px;color:var(--muted)}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review-card{padding:24px}.review-card:nth-child(even){transform:translateY(14px);background:linear-gradient(145deg,#fff,#F0F7FF)}.review-mark{font-size:34px;color:var(--ice);line-height:1}.review-card p{margin:4px 0 0;color:var(--muted)}
.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--border);border-radius:18px;background:#fff;overflow:hidden}.faq-question{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px}.faq-question h3{margin:0;font-size:17px}.faq-toggle{border:0;background:#EEF7FF;color:var(--blue);border-radius:10px;width:34px;height:34px;cursor:pointer;font-size:22px}.faq-answer{padding:0 20px 18px;color:var(--muted)}.faq-item.is-open .faq-toggle{transform:rotate(45deg)}
.compliance-box{border-radius:26px;background:#12253A;color:#DCEAF7;padding:34px;display:grid;grid-template-columns:.7fr 1.3fr;gap:28px;align-items:center}.compliance-box h2{color:#fff}.compliance-box p{margin:0}.compliance-tags{display:flex;gap:10px;flex-wrap:wrap}.compliance-tags span{background:rgba(56,189,248,.10);border:1px solid rgba(125,211,252,.18);color:#EAF4FF;padding:9px 12px;border-radius:999px;font-size:14px}
.inner-hero{position:relative;overflow:hidden;background:radial-gradient(circle at 88% 20%,rgba(56,189,248,.22),transparent 28%),linear-gradient(145deg,#FBFDFF,#EEF7FF 55%,#E8FCFA)}.inner-hero-grid{max-width:var(--max);margin:0 auto;padding:76px 24px 58px;display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:center}.inner-hero h1{font-size:clamp(36px,5vw,64px)}.inner-hero img{width:100%;object-fit:contain}.inner-intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px}.inner-intro aside{position:sticky;top:104px;align-self:start;padding:24px;border-radius:22px;background:linear-gradient(160deg,#172B4D,#0F3650);color:#DCEAF7}.inner-intro aside h2{font-size:22px;color:#fff}.inner-copy p{margin:0 0 18px;color:var(--muted)}.service-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.service-card{padding:24px;border-radius:22px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow)}.service-card:nth-child(2){background:linear-gradient(160deg,#EEF7FF,#fff)}.service-card:nth-child(3){background:linear-gradient(160deg,#E8FCFA,#fff)}.guide-band{display:grid;grid-template-columns:.65fr 1.35fr;gap:24px;border-radius:26px;background:linear-gradient(135deg,#102A43,#12354A);color:#DCEAF7;padding:30px}.guide-band h2{color:#fff}.guide-band p{margin:0}.mini-reviews{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mini-reviews blockquote{margin:0;padding:24px;border-radius:22px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);color:var(--muted)}.notice-panel{padding:26px;border-radius:22px;background:linear-gradient(135deg,#E9F5FF,#E8FCFA);border:1px solid var(--border)}.notice-panel strong{color:var(--title)}
.layout-stream .inner-hero{background:linear-gradient(135deg,#F8FCFF,#EAF7FF)}.layout-profile .inner-hero-grid,.layout-contact .inner-hero-grid{grid-template-columns:.9fr 1.1fr}.layout-tags .service-card{border-radius:36px}.layout-chat .inner-intro aside{background:linear-gradient(160deg,#172B4D,#344A78)}.layout-community .service-cards{grid-template-columns:1.2fr .9fr .9fr}.layout-discover .inner-hero{background:radial-gradient(circle at 15% 30%,rgba(99,102,241,.12),transparent 28%),linear-gradient(135deg,#F8FCFF,#EEF7FF)}.layout-timeline .service-card:nth-child(2){background:#12253A;color:#DCEAF7}.layout-timeline .service-card:nth-child(2) h3{color:#fff}.layout-app .inner-hero-grid{grid-template-columns:1fr .78fr}.layout-app .inner-hero img,.layout-download .inner-hero img{max-height:560px}.layout-safety .inner-hero,.layout-privacy .inner-hero{background:linear-gradient(135deg,#F8FCFF,#E8F7FF 55%,#E8FCFA)}.layout-help .service-cards,.layout-service .service-cards{grid-template-columns:repeat(3,1fr)}.layout-steps .service-card{position:relative;overflow:hidden}.layout-responsible .inner-hero{background:linear-gradient(135deg,#F9FCFF,#EEF7FF,#F5FAF8)}.layout-about .guide-band,.layout-story .guide-band{background:linear-gradient(135deg,#172B4D,#1D4561)}
.site-footer{background:#0C1B2A;color:#EAF4FF;margin-top:70px}.footer-inner{max-width:var(--max);margin:0 auto;padding:58px 24px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer-logo img{max-height:46px}.footer-brand p{color:#BBD0E2;max-width:430px}.site-footer section h2{font-size:15px;color:#fff;margin-bottom:16px}.site-footer section a{display:block;color:#CDE2F3;margin:8px 0;font-size:14px}.site-footer section a:hover{color:#7DD3FC}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 24px;text-align:center}.footer-bottom p{max-width:980px;margin:0 auto;color:#9FB9CC;font-size:13px}.drawer-overlay{position:fixed;inset:0;background:rgba(4,14,25,.52);z-index:10000;opacity:0;pointer-events:none;transition:.25s}.site-drawer{position:fixed;right:0;top:0;bottom:0;width:min(420px,88vw);z-index:10001;background:#F8FBFE;padding:24px;transform:translateX(100%);transition:.28s;overflow-y:auto;box-shadow:-24px 0 60px rgba(5,24,42,.2)}.drawer-open .drawer-overlay{opacity:1;pointer-events:auto}.drawer-open .site-drawer{transform:translateX(0)}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between}.drawer-brand img{max-height:42px}.drawer-close{border:0;background:#E9F5FF;color:#102033;width:42px;height:42px;border-radius:14px;font-size:28px;cursor:pointer}.drawer-intro{color:var(--muted);font-size:14px}.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.drawer-nav a{background:#fff;border:1px solid var(--border);border-radius:14px;padding:11px 13px;color:var(--deep)}.drawer-note{padding:16px;border-radius:16px;background:#E8FCFA;color:#4D6578;font-size:13px}.mobile-bottom-nav{display:none}
@media(max-width:980px){.visual-ribbon{grid-template-columns:1fr}.nav-core{display:none}.desktop-menu-button{display:none}.mobile-menu-button{display:flex}.header-inner{display:grid;grid-template-columns:42px 1fr auto;gap:12px}.site-logo{justify-self:center}.header-actions{justify-self:end}.hero-grid,.inner-hero-grid,.media-split,.dual-grid,.editorial-grid,.security-grid,.inner-intro,.guide-band,.compliance-box{grid-template-columns:1fr}.hero-visual{min-height:0}.hero-visual .float-img{display:none}.highlight-inner{grid-template-columns:1fr 1fr}.highlight-item:nth-child(3):before{display:none}.triple-grid{grid-template-columns:1fr 1fr}.triple-card:nth-child(3){grid-column:1/-1}.reviews-grid{grid-template-columns:1fr 1fr}.service-cards{grid-template-columns:1fr 1fr}.service-cards .service-card:nth-child(3){grid-column:1/-1}.inner-intro aside{position:static}.footer-inner{grid-template-columns:1.3fr 1fr 1fr}.footer-inner section:last-child{grid-column:2/4}.layout-community .service-cards,.layout-help .service-cards,.layout-service .service-cards{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.ribbon-images{grid-template-columns:1fr}.ribbon-images img:first-child{grid-row:auto}.ribbon-images img:nth-child(2),.ribbon-images img:nth-child(3){transform:none}body{padding-bottom:66px}.header-inner{min-height:64px;padding:0 12px}.site-logo img{max-width:126px;max-height:38px}.header-cta{padding:9px 12px;font-size:13px}.section{padding:56px 16px}.hero-grid,.inner-hero-grid{padding:56px 16px 48px;gap:28px}h1{font-size:42px}.hero-home h1,.inner-hero h1{font-size:40px}.lead{font-size:16px}.highlight-strip{padding:0 16px}.highlight-inner{grid-template-columns:1fr}.highlight-item+ .highlight-item:before{top:0;left:20px;right:20px;width:auto;height:1px;bottom:auto}.channel-pill{max-width:none;flex:1 1 100%}.triple-grid,.reviews-grid,.service-cards,.mini-reviews,.layout-community .service-cards,.layout-help .service-cards,.layout-service .service-cards{grid-template-columns:1fr}.triple-card:nth-child(3),.service-cards .service-card:nth-child(3){grid-column:auto}.review-card:nth-child(even){transform:none}.footer-inner{grid-template-columns:1fr 1fr;padding:44px 16px}.footer-brand{grid-column:1/-1}.footer-inner section:last-child{grid-column:auto}.drawer-nav{grid-template-columns:1fr}.mobile-bottom-nav{position:fixed;left:10px;right:10px;bottom:10px;z-index:9998;display:grid;grid-template-columns:repeat(4,1fr);background:rgba(10,24,42,.94);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.08);box-shadow:0 12px 30px rgba(10,24,42,.28);border-radius:18px;padding:7px}.mobile-bottom-nav a{text-align:center;color:#DCEAF7;padding:8px 4px;border-radius:12px;font-size:13px}.mobile-bottom-nav a:hover{background:rgba(56,189,248,.12);color:#fff}.guide-band,.compliance-box{padding:24px}.inner-hero img{max-height:none}.header-actions .menu-button{display:none}}