:root{--bg:#fffaf3;--panel:#ffffff;--text:#1f2937;--muted:#64748b;--brand:#22a06b;--brand2:#f59e0b;--line:#e7e5df;--shadow:0 18px 45px rgba(15,23,42,.08)}
*{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(--text);line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:0 auto}.topbar{position:sticky;top:0;z-index:50;background:rgba(255,250,243,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:22px}.logo-mark{width:40px;height:40px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#9be7c1);display:grid;place-items:center;color:white;box-shadow:var(--shadow)}.nav-links{display:flex;gap:18px;align-items:center;flex-wrap:wrap;font-size:15px}.nav-links a{color:#334155}.nav-links a:hover{color:var(--brand)}.search-wrap{padding:0 0 16px}.fake-search{display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:0 8px 20px rgba(15,23,42,.04)}.fake-search input{flex:1;border:0;outline:0;font-size:15px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;background:var(--brand);color:white;padding:12px 20px;font-weight:800;cursor:pointer}.btn.secondary{background:#111827}.hero{padding:54px 0 34px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}.eyebrow{display:inline-flex;background:#e9f8f0;color:#13794e;border:1px solid #c8efd9;border-radius:999px;padding:6px 12px;font-weight:800;font-size:14px}h1{font-size:clamp(34px,5vw,58px);line-height:1.14;margin:20px 0 14px}h2{font-size:clamp(26px,3vw,36px);line-height:1.25;margin:0 0 14px}h3{font-size:20px;margin:0 0 8px}.lead{font-size:18px;color:var(--muted);max-width:700px}.domain-pill{display:inline-flex;margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px 12px;color:#475569}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-card,.card{background:var(--panel);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);overflow:hidden}.hero-card figcaption{padding:14px 18px;color:#64748b;font-size:14px}.section{padding:42px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card{padding:22px}.icon{font-size:30px}.muted{color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.tag{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 10px;color:#475569;font-size:14px}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.video-card{position:relative;border-radius:24px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.video-card img{aspect-ratio:16/10;object-fit:cover}.video-meta{padding:16px}.play-layer{position:absolute;inset:0;background:rgba(15,23,42,.15);display:grid;place-items:center;opacity:0;transition:.2s}.video-card:hover .play-layer{opacity:1}.play-button{width:70px;height:70px;border-radius:999px;background:rgba(255,255,255,.92);display:grid;place-items:center;font-size:28px;color:#111827}.metrics{display:flex;gap:10px;flex-wrap:wrap;color:#64748b;font-size:13px}.steps{counter-reset:step}.step{display:grid;grid-template-columns:62px 1fr;gap:14px;align-items:start}.step-num{width:52px;height:52px;border-radius:18px;background:#111827;color:white;display:grid;place-items:center;font-weight:900}.timeline{border-left:3px solid #d9eadf;margin-left:12px;padding-left:22px}.timeline .card{margin-bottom:14px}.faq-item{border-bottom:1px solid var(--line);padding:16px 0}.faq-q{font-weight:900;cursor:pointer}.faq-a{color:var(--muted);display:none}.faq-item.open .faq-a{display:block}.footer{background:#111827;color:#e5e7eb;margin-top:40px;padding:34px 0}.footer a,.footer .muted{color:#cbd5e1}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px}.breadcrumb{font-size:14px;color:#64748b;margin:22px 0}.page-hero{padding:34px 0}.download-box{background:linear-gradient(135deg,#fff,#eefbf4);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow)}@media(max-width:860px){.hero-grid,.grid-3,.grid-2,.video-grid,.footer-grid{grid-template-columns:1fr}.nav{align-items:flex-start}.nav-links{display:none}.section-head{display:block}h1{font-size:34px}.hero{padding-top:28px}}