:root{--bg:#f7f8fb;--card:#fff;--text:#182033;--muted:#667085;--line:#e6e9f0;--brand:#1f3f7a;--brand2:#0f766e;--soft:#eef4ff;--shadow:0 18px 45px rgba(21,35,68,.08)}*{box-sizing:border-box}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}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}header{background:rgba(255,255,255,.95);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.container{width:min(1180px,92vw);margin:auto}.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 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h2{font-size:32px;margin:0}.section-title p{margin:8px 0 0;color:var(--muted)}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card h3{margin:0 0 8px;font-size:21px}.card p{color:var(--muted);margin:0}.taglist{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.tag{font-size:13px;border:1px solid var(--line);padding:5px 10px;border-radius:999px;color:#475467;background:#fff}.video-card{position:relative;overflow:hidden;border-radius:24px;background:#111;border:1px solid var(--line);box-shadow:var(--shadow)}.video-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.9;transition:.25s}.video-card:hover img{opacity:.55;transform:scale(1.03)}.play{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:.2s}.video-card:hover .play{opacity:1}.play span{width:66px;height:66px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;color:var(--brand);font-weight:900}.video-meta{position:absolute;left:16px;right:16px;bottom:14px;color:#fff}.video-meta h3{margin:0 0 6px}.metrics{font-size:13px;opacity:.9}.steps{counter-reset:s}.step{display:flex;gap:14px}.step:before{counter-increment:s;content:counter(s);width:34px;height:34px;flex:none;border-radius:12px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}.timeline{border-left:3px solid var(--line);padding-left:22px}.timeline .card{margin-bottom:16px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;margin-bottom:12px;overflow:hidden}.faq-q{width:100%;text-align:left;background:#fff;border:0;padding:18px 20px;font-size:17px;font-weight:800;cursor:pointer}.faq-a{display:none;padding:0 20px 18px;color:var(--muted)}.faq-item.active .faq-a{display:block}.quote{font-size:15px}.quote b{display:block;color:var(--brand);margin-top:14px}.contact-box{background:linear-gradient(135deg,#1f3f7a,#0f766e);color:#fff;border-radius:34px;padding:34px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}.contact-box p{color:rgba(255,255,255,.84)}footer{background:#101828;color:#d0d5dd;margin-top:50px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:24px;padding:38px 0}.footer-grid h3{color:#fff;margin-top:0}.footer-grid a{display:block;color:#d0d5dd;margin:8px 0}.copyright{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;color:#98a2b3}.crumb{font-size:14px;color:#667085;margin:22px 0}.page-hero{padding:40px 0 20px}.page-hero h1{font-size:42px;margin:0}.json-block{white-space:pre-wrap;background:#0b1220;color:#d8e5ff;border-radius:20px;padding:20px;overflow:auto;font-size:13px}.notice{padding:12px 16px;border:1px solid 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