:root{
  --bg:#F5F8FC;--nav:#0A182A;--ink:#102033;--text:#263748;--muted:#657789;--soft:#8C9AAA;
  --blue:#3B82F6;--blue2:#2563EB;--ice:#38BDF8;--cyan:#22D3C5;--indigo:#6366F1;
  --line:rgba(59,130,246,.14);--shadow:0 20px 50px rgba(29,78,119,.10);--radius:24px;
}
*{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","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}body.drawer-open{overflow:hidden}img{max-width:100%;height:auto;display:block}a{color:var(--blue2);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,.55)}
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.page-hero{position:relative;overflow:hidden;padding:62px 0 48px;background:linear-gradient(135deg,#F8FBFF,#EDF8FF 60%,#ECFFFA)}.page-hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-120px;top:-200px;background:radial-gradient(circle,rgba(56,189,248,.28),transparent 68%)}.page-hero-grid{position:relative;display:grid;grid-template-columns:1fr .88fr;gap:42px;align-items:center}.page-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.08;color:var(--ink);margin:10px 0 14px;letter-spacing:-.035em}.page-hero .lead{font-size:17px;color:#4F6477}.page-hero img{border-radius:28px;box-shadow:var(--shadow);background:#fff;padding:8px}.page-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.content-block{padding:28px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.content-block h2,.content-block h3{color:var(--ink);margin-top:0}.content-block p:last-child{margin-bottom:0}.content-block.emphasis{background:#12253A;color:#DDEBFA}.content-block.emphasis h2,.content-block.emphasis h3{color:#fff}.content-block.emphasis p{color:#C6D9E9}.content-block.tint{background:#EEF7FF}.content-block.mint{background:#E8FCFA}.inline-list{display:grid;gap:10px;margin:16px 0}.inline-list span{padding:10px 12px;border-left:3px solid #38BDF8;background:rgba(255,255,255,.55);border-radius:0 12px 12px 0}.story-numbers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.story-num{padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.story-num b{display:block;font:700 28px/1 monospace;color:#38BDF8}.story-num h3{margin:12px 0 6px;color:var(--ink)}.editorial-strip{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}.editorial-strip article{padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line)}.editorial-strip article:first-child{background:#12253A;color:#DCEBFA}.editorial-strip article:first-child h3{color:#fff}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;padding:26px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.tag-cloud span{padding:9px 13px;border-radius:999px;background:#EEF7FF;color:#1F5E95;border:1px solid rgba(59,130,246,.12)}.message-demo{display:grid;gap:12px;padding:26px;border-radius:28px;background:#12253A}.bubble{max-width:76%;padding:14px 16px;border-radius:18px;background:#fff;color:#263748}.bubble.me{margin-left:auto;background:#DBF6FF}.message-demo small{color:#89A6BF}.timeline{position:relative;display:grid;gap:18px}.timeline:before{content:"";position:absolute;left:24px;top:8px;bottom:8px;width:2px;background:#B9E6FF}.timeline article{position:relative;margin-left:54px;padding:20px 22px;border-radius:20px;background:#fff;border:1px solid var(--line)}.timeline article:before{content:"";position:absolute;left:-39px;top:24px;width:14px;height:14px;border-radius:50%;background:#38BDF8;box-shadow:0 0 0 7px #E8F8FF}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{counter-increment:step;padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line)}.step:before{content:"0" counter(step);display:block;font:700 20px/1 monospace;color:#38BDF8}.step h3{color:var(--ink);margin:12px 0 8px}.security-board{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.security-card{padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line)}.security-card b{color:#0284C7}.service-matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.service-matrix a{padding:20px;border-radius:20px;background:#fff;border:1px solid var(--line);color:#25435F;box-shadow:0 10px 24px rgba(29,78,119,.06)}.service-matrix a strong{display:block;color:var(--ink);margin-bottom:6px}.page-note{padding:26px;border-radius:26px;background:linear-gradient(135deg,#172B4D,#123B59);color:#DCEBFA}.page-note h2{color:#fff;margin-top:0}.page-note p:last-child{margin-bottom:0}
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@media (max-width:860px){body{padding-bottom:72px}.site-header .site-logo{position:absolute;left:50%;transform:translateX(-50%)}.header-inner{width:min(100% - 24px,1280px);min-height:64px}.nav-core,.menu-btn-desktop{display:none}.menu-btn-mobile{display:flex}.site-logo strong{font-size:16px}.site-logo img{max-height:38px;max-width:40px}.header-cta{min-height:38px;padding:8px 14px;font-size:13px}.hero{padding:46px 0}.hero-grid,.page-hero-grid,.brand-editorial,.media-feature,.content-grid,.security-grid{grid-template-columns:1fr}.hero-visual{min-height:auto}.hero-visual .hero-main{width:100%}.hero-float{position:relative;left:auto;bottom:auto;width:48%;margin:-42px 0 0 18px}.hero-chip{right:10px;top:10px}.signal-grid{grid-template-columns:1fr 1fr}.signal-item:nth-child(2){border-right:0}.signal-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.08)}.split-grid,.triple-grid{grid-template-columns:1fr}.triple-grid .service-tile:last-child{grid-column:auto}.section{padding:56px 0}.section-head{align-items:flex-start;flex-direction:column}.review-flow{columns:1}.notice-band{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:auto}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.mobile-quick-nav{position:fixed;left:0;right:0;bottom:0;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);padding:7px max(8px,env(safe-area-inset-left)) calc(7px + env(safe-area-inset-bottom));background:rgba(10,24,42,.95);backdrop-filter:blur(14px);border-top:1px solid rgba(255,255,255,.08)}.mobile-quick-nav a{color:#C6D9E9;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;line-height:1.25;gap:2px}.mobile-quick-nav span{font-size:18px;color:#7DD3FC}.story-numbers,.steps,.security-board{grid-template-columns:1fr}.editorial-strip{grid-template-columns:1fr}.service-matrix{grid-template-columns:1fr 1fr}}
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