:root{--ink:#18251e;--muted:#627067;--green:#4f9655;--soft:#edf6ea;--dark:#13251b;--line:#d8e4d7;--paper:#f8faf7}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.85}img{display:block;max-width:100%;height:auto}.shell{width:min(1180px,calc(100% - 40px));margin:auto}a{color:inherit}.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.header-grid{min-height:70px;display:grid;grid-template-columns:190px 1fr auto;align-items:center;gap:24px}.brand img{height:34px;max-width:165px;width:auto;object-fit:contain}.header nav{display:flex;justify-content:center;gap:22px}.header nav a{text-decoration:none;font-size:13px;color:#53645a}.top-cta{display:inline-flex;min-height:44px;align-items:center;padding:0 18px;background:var(--dark);color:#fff;text-decoration:none;border-radius:7px;font-weight:900}
.hero{padding:78px 0 58px;background:linear-gradient(180deg,#f6faf4,#fff)}.hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:60px;align-items:center}.eyebrow,.gallery-title>span,.intro span,.steps-title>span,.download span,.faq span,.final span{font-size:10px;letter-spacing:.16em;font-weight:900;color:#437f48}.hero h1{margin:7px 0 18px;font-size:clamp(44px,6.5vw,78px);line-height:.98;letter-spacing:-.055em}.lead{font-size:18px;color:#536158}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.primary,.secondary{display:inline-flex;min-height:50px;align-items:center;justify-content:center;padding:0 20px;text-decoration:none;border-radius:7px;font-weight:900}.primary{background:var(--green);color:#fff}.secondary{border:1px solid var(--line);background:#fff}.hero-image{margin:0;padding:18px;border:1px solid var(--line);background:#fff}.hero-image img{max-height:460px;width:auto;margin:auto;object-fit:contain}.hero-image figcaption{padding-top:10px;color:#68766c;font-size:13px}
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.intro{padding:82px 0;background:var(--paper)}.narrow{max-width:860px}.intro p{font-size:17px}
.steps{padding:88px 0}.steps-title{max-width:840px;margin-bottom:42px}.step{display:grid;grid-template-columns:.82fr 1.18fr;gap:52px;align-items:center;padding:42px 0;border-top:1px solid var(--line)}.step.reverse{grid-template-columns:1.18fr .82fr}.step.reverse>div{order:2}.step.reverse figure{order:1}.step b{font-size:11px;letter-spacing:.14em;color:#437f48}.step h3{margin:7px 0 12px;font-size:28px;line-height:1.2}.step p{color:var(--muted)}.step>div>a{display:inline-flex;margin-top:8px;padding:9px 16px;background:var(--dark);color:#fff;text-decoration:none;border-radius:6px;font-weight:900}.step figure{margin:0;padding:15px;background:var(--paper);border:1px solid var(--line)}.step img{width:100%;max-height:430px;object-fit:contain;background:#fff}
.download{padding:62px 0;background:var(--soft)}.download-grid{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}.download p{color:#56635b}.download-grid>div:last-child{display:flex;gap:12px;flex-wrap:wrap}.download a{display:inline-flex;min-width:190px;min-height:50px;align-items:center;justify-content:center;padding:0 18px;background:var(--dark);color:#fff;text-decoration:none;border-radius:6px;font-weight:900}.download a:last-child{background:#fff;color:var(--dark);border:1px solid #a9c7aa}
.related{padding:70px 0}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-grid a{display:grid;grid-template-columns:70px 1fr auto;gap:14px;align-items:center;padding:22px;border-top:2px solid var(--dark);border-bottom:1px solid var(--line);text-decoration:none}.related-grid small{color:#437f48;font-weight:900}
.faq{padding:86px 0;background:#f8faf7}.faq-layout{display:grid;grid-template-columns:.58fr 1.42fr;gap:60px}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;padding:20px 2px;font-size:18px;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";float:right;color:#437f48}.faq-list details[open] summary:after{content:"−"}.faq-list p{margin:-3px 0 22px;color:var(--muted)}
.final{padding:54px 0;background:var(--dark);color:#fff}.final-grid{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.final p{color:#cad7ce}.final a{display:inline-flex;min-width:220px;min-height:52px;align-items:center;justify-content:center;padding:0 20px;background:#78be7b;color:#102016;text-decoration:none;border-radius:6px;font-weight:900}.footer{padding:48px 0 84px;background:#0b120e;color:#dce5df}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:30px}.footer img{height:31px;max-width:155px;width:auto}.footer p{color:#96a39a;font-size:13px}.footer nav{display:flex;gap:18px;flex-wrap:wrap}.footer nav a{text-decoration:none;color:#dce5df;font-size:14px}.mobile-bar{display:none}
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