:root{--green:#008443;--deep:#174b36;--ink:#20382c;--muted:#586b60;--paper:#f0f3f1;--mint:#e7f2e8;--line:#dce4de;--white:#fff;--radius:18px;--ease:cubic-bezier(.2,.7,.2,1)}
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var(--green);border-radius:8px}.skip:focus{top:12px}.topbar{background:var(--deep);color:#edf8ee;font-size:12px}.topbar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:32px}.topbar a{display:inline-flex;align-items:center;gap:10px}.topbar .icon{width:14px;height:14px;transform:rotate(-35deg)}.header{position:sticky;top:0;z-index:30;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:block;flex-shrink:0}.brand img{width:146px;height:auto}.navlinks{display:flex;align-items:center;gap:34px;font-size:15px;font-weight:500}.navlinks>a{position:relative;display:inline-flex;align-items:center;min-height:48px;white-space:nowrap}.navlinks>a:after{content:"";position:absolute;bottom:4px;left:0;right:0;height:2px;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform 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.18s}.btn:hover{color:#fff;background:var(--deep);border-color:var(--deep)}.btn:active{background:#123e2d}.btn.light{background:transparent;color:var(--deep);border-color:#afc2b5}.btn.light:hover{background:var(--mint)}.btn.white{background:#fff;border-color:#fff;color:var(--deep)}.btn.white:hover{background:var(--mint);border-color:var(--mint)}.textlink{display:inline-flex;align-items:center;gap:12px;font-size:15px;font-weight:600;color:var(--deep);min-height:44px}.textlink:hover{color:var(--green)}.textlink .icon{width:20px}.hero-note{margin-top:52px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);max-width:450px}.hero-stage{height:560px;position:relative;background:var(--mint);border-radius:24px;overflow:hidden;isolation:isolate}.stage-heading{position:absolute;inset:22px 28px 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#cdd9d0}.benefits-grid>div:first-child{padding-left:0;border:0}.benefits .icon{width:34px;height:34px;color:var(--green)}.benefits h2{font-size:17px;margin:0 0 3px;font-weight:650}.benefits p{font-size:13px;margin:0;color:var(--muted)}section.section{padding-block:88px}.section.white{background:#fff}.section-title{display:flex;align-items:end;justify-content:space-between;gap:50px;margin-bottom:38px}.section-label{display:inline-block;font-size:13px;font-weight:600;color:var(--green);margin-bottom:12px}.section-title h2{font-size:36px;font-weight:650;line-height:1.4;letter-spacing:-.035em;margin:0}.section-title p{max-width:380px;margin:0;color:var(--muted);font-size:15px}.section-title p+.textlink{margin-top:12px}.grid{display:grid;gap:28px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.product-card{display:block;min-width:0}.product-image{height:340px;background:var(--paper);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;isolation:isolate}.product-image img{width:130%;height:130%;max-width:none;object-fit:contain;transition:transform .25s var(--ease);mix-blend-mode:multiply}.product-model-EC600 img{height:115%;width:115%}.product-model-EC800 img{width:100%;height:100%;padding:16px}.product-model-EC620 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.page-head{padding:32px 0 44px;background:var(--paper);border-bottom:1px solid var(--line)}.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:30px;min-height:24px}.crumb a{display:inline-flex;align-items:center;min-height:28px}.page-head h1{font-size:clamp(29px,3.2vw,44px);line-height:1.4;letter-spacing:-.035em;font-weight:650;margin:0 0 18px;max-width:1080px}.lead{font-size:16px;line-height:1.9;max-width:790px;color:var(--muted);margin:0}.eyebrow{font-size:13px;font-weight:600;color:var(--green);display:block;margin-bottom:15px}.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}.product-gallery{min-width:0}.product-gallery .main-img{background:var(--paper);border-radius:var(--radius);height:480px;display:flex;align-items:center;justify-content:center;overflow:hidden}.product-gallery .main-img img{height:100%;width:100%;max-width:none;object-fit:contain;mix-blend-mode:multiply}.thumbs{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}.gallery-thumb{width:90px;height:90px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center}.gallery-thumb[aria-pressed="true"]{border:2px solid var(--green);background:var(--mint)}.gallery-thumb>img{height:100%;width:100%;object-fit:contain}.detail{padding-top:12px}.detail h2{font-size:29px;line-height:1.4;margin:0 0 25px;font-weight:650}.feature-list{list-style:none;padding:0;margin:0;font-size:15px}.feature-list li{position:relative;padding:13px 0 13px 22px;border-bottom:1px solid var(--line)}.feature-list li:before{content:"";position:absolute;left:0;top:23px;width:6px;height:6px;background:var(--green);border-radius:50%}.detail .actions{gap:12px}.specs{border-collapse:collapse;width:100%;font-size:16px;background:#fff}.specs th,.specs td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--line)}.specs tr:nth-child(odd){background:#f3f6f3}.specs th{width:35%;font-weight:500;color:var(--muted)}.specs td{overflow-wrap:anywhere}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:80px;padding-block:54px 80px}.prose{min-width:0;overflow-wrap:anywhere;font-size:17px;line-height:2;max-width:900px}.prose p{margin:1em 0}.prose img{max-width:100%;height:auto;margin:28px auto;border-radius:10px}.prose h2{font-size:27px;line-height:1.5;margin:32px 0 20px}.prose h3{font-size:21px}.prose table{display:block;width:100%;overflow:auto;border-collapse:collapse}.prose td,.prose th{padding:10px;border:1px solid var(--line)}.prose a{color:var(--green);text-decoration:underline;text-underline-offset:4px}.history-note{padding:15px 20px;background:var(--paper);border-left:3px solid #8caa94;color:var(--muted);font-size:13px;line-height:1.8;margin:25px 0}.sidebar{font-size:14px}.sidebar h2{font-size:19px;padding-bottom:16px;border-bottom:1px solid var(--line)}.sidebar>a{display:block;line-height:1.8;margin:18px 0}.sidebar a:hover{color:var(--green)}.contactbox{background:var(--mint);padding:24px;border-radius:12px;margin-top:36px}.contactbox p{font-size:12px}.contactbox strong{font-size:23px;color:var(--deep)}.contactbox>a{display:block;margin-top:12px}.pagination{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:40px}.pagination a,.pagination span{min-width:44px;min-height:44px;padding:6px 10px;display:grid;place-items:center;border:1px solid var(--line);border-radius:6px;font-size:14px}.pagination span{background:var(--green);color:#fff}.pagination a:hover{background:var(--mint)}label[for="article-search"]{display:block;font-size:15px;font-weight:600;margin-bottom:10px}.searchbar input{width:100%;font:inherit;min-height:52px;padding:12px 18px;border:1px solid #9bb5a2;border-radius:8px;background:#fff}.search-result-count{font-size:13px;color:var(--muted);margin-bottom:25px}.solution{padding:30px;background:var(--paper);border-radius:14px;border-top:3px solid var(--green)}.solution h2,.solution h3{font-size:23px;line-height:1.5;margin:12px 0}.solution p{font-size:15px;color:var(--muted)}.solution .num{font-size:14px;color:var(--green)}.steps{counter-reset:steps;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}.step{position:relative;padding-top:20px;border-top:2px solid #b9cdbf}.step:before{counter-increment:steps;content:"0" counter(steps);font-size:14px;color:var(--green);font-weight:600}.step h3{font-size:19px;margin:14px 0 10px}.step p{font-size:14px;color:var(--muted)}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}.contact-grid h2{font-size:29px;line-height:1.5;margin:5px 0 22px}.contact-grid dl{margin:0}.contact-grid dt{font-size:13px;color:var(--muted);margin-top:20px}.contact-grid dd{font-size:18px;margin:5px 0;overflow-wrap:anywhere}.aboutphoto{width:100%;max-height:440px;object-fit:cover;border-radius:var(--radius)}.notice{font-size:13px;color:var(--muted);margin-top:24px}.tag{font-size:12px;padding:4px 10px;border:1px solid var(--line);border-radius:20px}.empty{padding:30px;color:var(--muted)}[hidden]{display:none!important}::selection{background:#c8e8ce;color:#173a27}
@media(min-width:1440px){.hero-layout{gap:90px}.hero-stage{height:580px}.hero-product{top:-48px}.hero-stage[data-model="EC600"] .hero-product{top:25px}.hero-stage[data-model="EC800"] .hero-product{top:22px}}
@media(max-width:1120px){.wrap{width:calc(100% - 64px)}.navlinks{gap:22px}.navlinks .nav-contact{margin-left:0;padding-inline:14px;gap:12px}.hero-layout{gap:35px}.hero h1{font-size:44px}.hero-stage{height:520px}.hero-product{width:600px;height:600px;top:-45px}.stage-bottom{padding:15px 18px;align-items:flex-start;flex-direction:column;gap:8px;min-height:116px}.stage-title{font-size:13px}.stage-link{position:absolute;right:18px;top:15px}.model-switch{min-height:38px}.hero-stage[data-model="EC600"] .hero-product{width:460px;top:12px}.hero-stage[data-model="EC800"] .hero-product{width:405px;top:12px}.product-image{height:300px}.scene-layout{gap:42px}.scene-photo{min-height:480px}.scene-copy h2{font-size:31px}.footer-grid{gap:35px}.cta{padding:40px}.content-layout{gap:45px;grid-template-columns:minmax(0,1fr) 230px}.product-detail{gap:40px}.product-gallery .main-img{height:420px}}
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@media(max-width:640px){html{scroll-padding-top:94px}.wrap{width:calc(100% - 40px)}.topbar{font-size:10px}.topbar .wrap{min-height:28px}.topbar .icon{width:12px;height:12px}.header{backdrop-filter:none}.nav{min-height:70px;position:relative;flex-wrap:wrap;gap:0}.brand img{width:115px}.navtoggle{display:inline-flex}.navlinks{display:none;flex-direction:column;align-items:stretch;gap:0;width:100%;padding:12px 0 16px;font-size:15px}.navlinks.open{display:flex}.navlinks>a{padding:12px 4px;border-top:1px solid var(--line);min-height:48px}.navlinks>a:after{display:none}.navlinks .nav-contact{display:flex;margin:10px 0 0;justify-content:space-between;padding:11px 16px}.hero{padding:30px 0}.hero-layout{grid-template-columns:1fr;gap:30px}.hero-copy{padding:0}.hero-kicker{font-size:12px}.hero h1{font-size:clamp(32px,8.8vw,44px);letter-spacing:-.055em;line-height:1.38;margin:20px 0}.intro{font-size:16px!important;line-height:1.85;max-width:none}.hero-copy 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/* Original guides: visible sources, local contents and product references. */
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.prose .article-toc{background:var(--mint);border:1px solid #cddfcf;border-radius:12px;padding:22px 26px;margin:28px 0 34px;font-size:14px;line-height:1.7}
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/* Project records keep the installation date separate from editorial publication. */
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