:root{--bg:#f7f8fb;--card:#ffffff;--ink:#192132;--muted:#5d6678;--line:#e6eaf2;--brand:#2f65ff;--brand-2:#6d8dff;--soft:#eef3ff;--shadow:0 16px 40px rgba(31,49,89,.10)}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:0 auto}.sr-only{position:absolute;left:-9999px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}.brand,.footer-logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:22px}.brand img,.footer-logo img{border-radius:12px;box-shadow:var(--shadow)}.main-nav{display:flex;align-items:center;gap:8px;overflow:auto;white-space:nowrap}.main-nav a{font-size:14px;padding:8px 12px;border-radius:999px;color:var(--muted)}.main-nav a.active,.main-nav a:hover{background:var(--soft);color:var(--brand)}.search-bar-wrap{border-top:1px solid var(--line);background:#fff}.search-inner{display:flex;align-items:center;gap:10px;padding:12px 0}.search-inner input{flex:1;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:15px}.search-inner button,.btn{border:0;border-radius:14px;background:var(--brand);color:#fff;padding:12px 18px;font-weight:800;cursor:pointer;box-shadow:0 10px 24px rgba(47,101,255,.25)}.search-msg{color:var(--muted);font-size:14px}.hero{padding:58px 0 36px;background:linear-gradient(135deg,#edf3ff 0%,#fff 52%,#f5f8ff 100%)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;color:var(--brand);font-weight:800}.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.12;margin:18px 0}.hero p{font-size:18px;color:var(--muted);margin:0 0 22px}.cta-row{display:flex;gap:12px;flex-wrap:wrap}.btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--line);box-shadow:none}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px;text-align:center}.stat strong{font-size:23px;color:var(--brand)}.hero-media,.card{background:var(--card);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.hero-media{padding:16px}.video-card{position:relative;overflow:hidden;border-radius:22px;background:#000}.video-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}.video-card:hover img{transform:scale(1.04)}.play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(10,18,35,.16);opacity:0;transition:opacity .2s ease}.video-card:hover .play{opacity:1}.play span{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--brand);font-size:26px;box-shadow:var(--shadow)}.video-info{padding:14px 4px 0}.video-info h2{font-size:22px;margin:0 0 5px}.video-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:14px}.image-description{font-size:13px;color:var(--muted);margin-top:8px}.section{padding:54px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px}.section h2{font-size:32px;margin:0}.section-head p{color:var(--muted);margin:6px 0 0;max-width:680px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.grid.three{grid-template-columns:repeat(3,1fr)}.grid.two{grid-template-columns:repeat(2,1fr)}.card{padding:22px}.card h3{margin:0 0 8px;font-size:20px}.card p{color:var(--muted);margin:0}.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.tag{background:var(--soft);color:var(--brand);border-radius:999px;padding:4px 10px;font-size:13px}.steps{counter-reset:step}.step{position:relative;padding-left:54px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:22px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:#fff;font-weight:800}.updates{border-left:3px solid var(--brand);padding-left:18px}.update-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;margin-bottom:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;margin-bottom:12px;overflow:hidden}.faq-item summary{cursor:pointer;font-weight:800;padding:16px 18px}.faq-item p{padding:0 18px 16px;margin:0;color:var(--muted)}.review{display:flex;gap:14px}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--brand);font-weight:900;flex:0 0 auto}.breadcrumb{font-size:14px;color:var(--muted);padding:22px 0 0}.breadcrumb a{color:var(--brand)}.breadcrumb span{margin:0 6px}.page-hero{padding:42px 0 20px}.page-hero h1{font-size:42px;line-height:1.2;margin:10px 0}.site-footer{background:#101827;color:#dbe4f2;margin-top:40px;padding:44px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:24px}.footer-grid p{color:#aebad0}.footer-grid a{display:block;color:#dbe4f2;margin:6px 0}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#aebad0}.mini-banner{padding:28px;border-radius:26px;background:linear-gradient(135deg,#18356d,#2f65ff);color:#fff}.mini-banner p{color:#e9efff}.contact-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-demo input,.form-demo textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px;margin-bottom:12px;font:inherit}.form-demo textarea{min-height:120px}.notice{border-left:4px solid var(--brand);background:#fff;padding:16px 18px;border-radius:16px;color:var(--muted)}@media 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