:root{--bg:#f7f8fb;--ink:#141827;--muted:#5d6678;--card:#fff;--line:#e8ebf2;--brand:#1f4fff;--brand2:#0fb88f;--shadow:0 18px 55px rgba(20,24,39,.10)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1180px,92vw);margin:auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px 0}.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:22px}.logo-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}.top-nav{display:flex;flex-wrap:wrap;gap:12px;font-size:14px;color:#334155}.top-nav a:hover{color:var(--brand)}.search-strip{display:flex;gap:10px;padding:0 0 14px}.search-strip input{flex:1;padding:13px 16px;border:1px solid var(--line);border-radius:15px;background:#fff;font-size:15px}.search-strip button,.btn{border:0;border-radius:15px;padding:12px 20px;background:var(--brand);color:#fff;font-weight:800;cursor:pointer}.search-msg{align-self:center;color:var(--muted);font-size:14px}.hero{padding:56px 0 32px}.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:34px;align-items:center}.crumb,.eyebrow{font-weight:800;color:var(--brand);font-size:14px}.hero h1{font-size:clamp(34px,5vw,60px);line-height:1.1;margin:12px 0}.hero p{font-size:18px;color:var(--muted)}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0}.btn.alt{background:#fff;color:var(--brand);border:1px solid var(--line)}.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;text-align:center}.stat b{font-size:22px}.hero-figure{position:relative}.hero-figure img{border-radius:30px;box-shadow:var(--shadow)}.caption{font-size:13px;color:var(--muted);margin-top:8px}.section{padding:34px 0}.section h2{font-size:30px;margin:0 0 8px}.section-lead{color:var(--muted);margin:0 0 22px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 10px 28px rgba(20,24,39,.04)}.card h3{margin:0 0 8px;font-size:20px}.card p{color:var(--muted);margin:0}.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.tag{font-size:12px;padding:5px 10px;border-radius:99px;background:#edf2ff;color:#2442ba}.video-card{position:relative;overflow:hidden;padding:0}.video-card img{width:100%;aspect-ratio:16/9;object-fit:cover}.video-body{padding:18px}.play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(10,14,25,.08);opacity:0;transition:.25s}.video-card:hover .play{opacity:1}.play span{width:66px;height:66px;border-radius:50%;background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;color:var(--brand);font-weight:900}.steps{counter-reset:step}.step{display:grid;grid-template-columns:54px 1fr;gap:15px;align-items:start}.step:before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:42px;height:42px;border-radius:15px;background:var(--brand);color:#fff;font-weight:900}.timeline{border-left:3px solid #dce4ff;margin-left:14px}.log{padding:0 0 22px 24px;position:relative}.log:before{content:"";position:absolute;left:-9px;top:5px;width:15px;height:15px;border-radius:50%;background:var(--brand)}.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;margin:12px 0}.faq summary{font-weight:800;cursor:pointer}.review{display:flex;gap:14px}.avatar{width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,#dbe7ff,#dff8ef);display:grid;place-items:center;font-weight:900;color:var(--brand)}.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:18px}.site-footer{background:#101624;color:#dce3f4;padding:42px 0;margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:24px}.site-footer h2{font-size:18px;color:#fff}.site-footer p{color:#b7c1d6}.sr-only{position:absolute;width:1px;height:1px;clip:rect(0,0,0,0);overflow:hidden;white-space:nowrap}.mini-hero{padding:42px 0 10px}.content-list{display:grid;gap:16px}.share-box code{display:block;background:#f1f5f9;border-radius:12px;padding:10px;white-space:normal}@media(max-width:900px){.hero-grid,.grid,.grid.two,.contact-box,.footer-grid{grid-template-columns:1fr}.top-nav{display:grid;grid-template-columns:repeat(2,1fr);width:100%}.nav-wrap{align-items:flex-start;flex-direction:column}.stat-row{grid-template-columns:1fr}.search-strip{flex-direction:column}.hero{padding-top:30px}.card{padding:20px}}