:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#18242a;background:#f4f7f8;--blue:#008acb;--dark:#172126;--line:#dbe4e7;--muted:#607078;--fire:#b93a2f}
*{box-sizing:border-box}
body{margin:0;min-width:320px;background:radial-gradient(circle at 85% 0,#e7f5fa,transparent 32%),#f4f7f8}
button,input,select,textarea{font:inherit}
.ei-app{width:min(1280px,calc(100% - 32px));margin:auto;padding:34px 0 54px}
.ei-app>header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:26px}
.tag{display:inline-block;margin-bottom:10px;color:#08709f;font-size:12px;font-weight:900;letter-spacing:.14em}
.ei-app h1{margin:0;font-size:clamp(30px,4vw,48px);line-height:1.06;letter-spacing:-.035em}
.ei-app header p{max-width:760px;margin:13px 0 0;color:var(--muted);font-size:16px;line-height:1.55}
.rating{flex:0 0 auto;padding:13px 17px;color:#fff;background:var(--fire);border-radius:12px;font-size:22px;font-weight:900;box-shadow:0 9px 25px #b93a2f33}
.workspace{display:grid;grid-template-columns:minmax(300px,390px) minmax(0,1fr);gap:24px}
.controls,.building,.results{border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 12px 40px #1721260d}
.controls{padding:24px}
.step{display:flex;align-items:center;gap:12px;margin:2px 0 14px}
.step:not(:first-child){margin-top:27px}
.step>span{flex:0 0 30px;height:30px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--blue);font-weight:900}
.step div{display:flex;flex-direction:column}
.step small,label small{color:var(--muted);line-height:1.45}
.controls label{display:flex;flex-direction:column;gap:7px;color:#34464e;font-size:14px;font-weight:800}
.controls select,.controls input[type=number]{width:100%;height:46px;padding:0 12px;border:1px solid #cbd6da;border-radius:10px;color:var(--dark);background:#fff}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.product-fieldset{min-width:0;margin:0;padding:0;border:0}
.product-fieldset legend{margin-bottom:7px;color:#34464e;font-size:14px;font-weight:800}
.product-picker{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.product-option{min-width:0;padding:7px;display:grid;grid-template-columns:54px minmax(0,1fr);align-items:center;gap:9px;border:1px solid #ccd8dc;border-radius:10px;color:var(--dark);background:#fff;text-align:left;cursor:pointer;transition:border-color .16s,box-shadow .16s,background .16s}
.product-option:last-child{grid-column:1/-1}
.product-option img{width:54px;height:54px;display:block;object-fit:contain;border-radius:7px;background:#f3f5f5}
.product-option span{min-width:0;display:flex;flex-direction:column;gap:3px}
.product-option strong{font-size:13px}
.product-option small{overflow:hidden;color:var(--muted);font-size:10px;line-height:1.25;text-overflow:ellipsis}
.product-option:hover,.product-option:focus-visible{border-color:var(--blue);outline:0;box-shadow:0 0 0 3px #008acb1c}
.product-option.is-active{border-color:var(--blue);background:#eef8fc;box-shadow:inset 0 0 0 1px var(--blue)}
.controls select:focus,.controls input:focus{border-color:var(--blue);outline:3px solid #008acb1c}
.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fixed{margin-top:12px;padding:12px 14px;display:flex;justify-content:space-between;border-radius:10px;background:#edf7fb;color:#31515e}
.fixed strong{color:#066f9f}
.range-row{display:flex;align-items:center;gap:12px}
.range-row input{min-width:0;flex:1;accent-color:var(--blue)}
.range-row output{min-width:75px;padding:8px;border-radius:8px;background:#edf3f5;text-align:center}
.notice{margin:22px 0 0;padding:14px;border-left:4px solid #d79823;background:#fff7e6;color:#674d1d;font-size:13px;line-height:1.55}
.visual-column{display:grid;gap:18px}
.building{position:relative;min-height:520px;overflow:hidden;background:#dfe7e9}
.building>img{display:block;width:100%;height:100%;min-height:520px;object-fit:cover}
.window-assembly{position:absolute;left:51%;top:49%;display:block;padding:var(--border-px);background:#b9b8b2;box-shadow:0 0 0 2px #686c6d,0 10px 28px #0004;transform:translate(-50%,-50%);transition:width .22s,height .22s,padding .22s}
.block-grid{position:static;width:100%;height:100%;padding:0;display:grid;gap:var(--joint-px);background:#c9c8c2;box-shadow:inset 0 0 0 1px #8f908d}
.glass-cell{position:relative;min-width:0;min-height:0;overflow:hidden;border:1px solid #b8d0d1;background-image:linear-gradient(135deg,#d9f3f25c,#ffffff20 45%,#8aaeb050),url("ei60-interior-v2.png");background-position:center,var(--bg-x) var(--bg-y);background-repeat:no-repeat;background-size:100% 100%,var(--bg-size-x) var(--bg-size-y);box-shadow:inset 0 0 0 max(1px,var(--rim-px)) #eafcfc99,inset 0 0 calc(var(--rim-px) * 2) #54797c88}
.glass-cell::before{content:"";position:absolute;inset:8%;border:1px solid #f6ffff99;background:radial-gradient(ellipse at 24% 28%,#ffffff55 0 8%,transparent 28%),radial-gradient(ellipse at 72% 68%,#80a9aa38 0 10%,transparent 32%),repeating-linear-gradient(145deg,#ffffff18 0 7%,#63898a1c 11%,#ffffff0f 18%);filter:blur(.35px)}
.glass-cell::after{content:"";position:absolute;inset:3%;border:1px solid #5e83856b;box-shadow:inset 0 0 7px #ffffffaa}
.block-grid[data-variant="sat1"] .glass-cell{background-image:linear-gradient(135deg,#eef7f2b8,#d8e8e490 48%,#9bb5b5a8),url("ei60-interior-v2.png");filter:saturate(.7)}
.block-grid[data-variant="sat1"] .glass-cell::before{inset:5%;background:repeating-linear-gradient(128deg,#ffffff80 0 3%,#d9e6e179 6%,#ffffff65 10%);filter:blur(1.2px)}
.block-grid[data-variant="sat2"] .glass-cell{background-image:linear-gradient(135deg,#f3f7f0e8,#cddbd6dc 50%,#aebfbee8),url("ei60-interior-v2.png");filter:saturate(.35)}
.block-grid[data-variant="sat2"] .glass-cell::before{inset:5%;background:repeating-linear-gradient(135deg,#fff9 0 4%,#cbd8d399 8%,#eef4efa8 13%);filter:blur(1.8px)}
.block-grid[data-variant="nuagee"] .glass-cell{background-image:radial-gradient(ellipse at 25% 32%,#f6ffff8c 0 14%,transparent 38%),radial-gradient(ellipse at 72% 68%,#809d9f85 0 13%,transparent 41%),url("ei60-interior-v2.png");filter:saturate(.65)}
.block-grid[data-variant="nuagee"] .glass-cell::before{inset:5%;background:repeating-radial-gradient(ellipse at 25% 30%,#ffffff5c 0 7%,#75939542 12%,transparent 21%);filter:blur(.8px)}
.block-grid[data-variant="satinee"] .glass-cell{background-image:linear-gradient(145deg,#f2f6f0e8,#d5dfdae0 52%,#aabcbade),url("ei60-interior-v2.png");filter:saturate(.25)}
.block-grid[data-variant="satinee"] .glass-cell::before{inset:5%;background:radial-gradient(circle at 30% 28%,#fff9 0 4%,transparent 28%),repeating-linear-gradient(118deg,#fff6 0 2%,#bbc9c480 4%,#edf2ed70 7%);filter:blur(.7px)}
.product-preview{position:relative;height:172px;margin:15px 0 0;display:grid;grid-template-columns:1fr 1fr;place-items:center;overflow:hidden;border:1px solid #d6e1e4;border-radius:12px;background:#d8d5cc}
.product-preview>img{width:100%;height:100%;object-fit:contain;background:#fff}
.block-preview-2d{position:relative;z-index:1;width:128px;aspect-ratio:1;border:2px solid #9db8ba;background-image:linear-gradient(135deg,#d9f3f25c,#ffffff20 45%,#8aaeb050),url("ei60-interior-v2.png");background-position:center;background-size:100% 100%,cover;box-shadow:inset 0 0 0 9px #e8f8f899,inset 0 0 18px #446b6d88,0 10px 18px #1224}
.block-preview-2d::before{content:"";position:absolute;inset:12%;border:1px solid #f7ffffaa;background:repeating-linear-gradient(145deg,#ffffff28 0 8%,#6b93942b 12%,#ffffff12 21%);box-shadow:inset 0 0 10px #fff9}
.block-preview-2d[data-variant="sat1"]{background-image:linear-gradient(135deg,#eef7f2b8,#d8e8e490 48%,#9bb5b5a8),url("ei60-interior-v2.png")}
.block-preview-2d[data-variant="sat1"]::before{background:repeating-linear-gradient(128deg,#ffffff80 0 3%,#d9e6e179 6%,#ffffff65 10%);filter:blur(1.2px)}
.block-preview-2d[data-variant="sat2"]{background-image:linear-gradient(135deg,#f3f7f0e8,#cddbd6dc 50%,#aebfbee8),url("ei60-interior-v2.png")}
.block-preview-2d[data-variant="sat2"]::before{background:repeating-linear-gradient(135deg,#fff9 0 4%,#cbd8d399 8%,#eef4efa8 13%);filter:blur(1.8px)}
.block-preview-2d[data-variant="nuagee"]{background-image:radial-gradient(ellipse at 25% 32%,#f6ffff8c 0 14%,transparent 38%),radial-gradient(ellipse at 72% 68%,#809d9f85 0 13%,transparent 41%),url("ei60-interior-v2.png")}
.block-preview-2d[data-variant="nuagee"]::before{background:repeating-radial-gradient(ellipse at 25% 30%,#ffffff5c 0 7%,#75939542 12%,transparent 21%);filter:blur(.8px)}
.block-preview-2d[data-variant="satinee"]{background-image:linear-gradient(145deg,#f2f6f0e8,#d5dfdae0 52%,#aabcbade),url("ei60-interior-v2.png")}
.block-preview-2d[data-variant="satinee"]::before{background:radial-gradient(circle at 30% 28%,#fff9 0 4%,transparent 28%),repeating-linear-gradient(118deg,#fff6 0 2%,#bbc9c480 4%,#edf2ed70 7%);filter:blur(.7px)}
.product-preview figcaption{position:absolute;left:12px;bottom:10px;z-index:2;padding:7px 9px;display:flex;flex-direction:column;border-radius:8px;color:#fff;background:#172126d9;font-size:12px}
.product-preview figcaption span{opacity:.8}
.visual-label{position:absolute;right:18px;bottom:18px;padding:10px 14px;display:flex;flex-direction:column;border-radius:11px;color:#fff;background:#172126d9;backdrop-filter:blur(8px)}
.visual-label strong{font-size:22px}
.visual-label span{font-size:12px}
.results{padding:22px}
.results h2{margin:0 0 16px;font-size:22px}
.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.result-grid>div,.materials>div{padding:14px;border:1px solid var(--line);border-radius:11px;background:#fafcfc}
.result-grid span,.materials span{display:block;margin-bottom:7px;color:var(--muted);font-size:12px}
.result-grid strong{font-size:16px}
.materials{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.materials strong{font-size:14px}
.materials small{display:block;margin-top:6px;color:var(--muted);font-size:11px;line-height:1.35}
.material-rule{margin:12px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
.quote-scope{margin:12px 0 0;padding:11px 13px;border-left:3px solid var(--fire);border-radius:0 8px 8px 0;background:#fff5f4;color:#5f302c;font-size:12px;line-height:1.5}
.quote-intro .quote-scope{font-size:14px}
.limit{margin:14px 0 0;padding:11px 13px;border-radius:9px;color:#146448;background:#eaf8f2;font-size:13px;font-weight:750}
.limit.error{color:#8f2922;background:#fdecea}
.quote-section{margin-top:28px;padding:32px;display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.35fr);gap:42px;border:1px solid var(--line);border-top:4px solid #100b70;border-radius:16px;background:#fff;box-shadow:0 12px 40px #1721260d}
.quote-intro h2{margin:3px 0 14px;font-size:clamp(26px,3vw,36px);line-height:1.15}
.quote-intro p{color:var(--muted);font-size:16px;line-height:1.65}
.quote-summary{margin:22px 0;padding:18px;border-left:4px solid var(--fire);background:#f7f9fa;color:#100b70;font-size:18px;font-weight:900}
.small-note{font-size:14px!important}
.quote-form h3{margin:24px 0 12px;font-size:19px}
.quote-form h3:first-child{margin-top:0}
.quote-form label{display:flex;flex-direction:column;gap:7px;color:#34464e;font-size:14px;font-weight:800}
.quote-form input,.quote-form select,.quote-form textarea{width:100%;margin-bottom:15px;padding:11px 12px;border:1px solid #c5cfd3;border-radius:8px;color:var(--dark);background:#fff}
.quote-form input,.quote-form select{min-height:46px}
.company-choice{margin:4px 0 15px;flex-direction:row!important;align-items:center}
.quote-form .company-choice input{width:20px;height:20px;min-height:20px;margin:0}
.quote-form #companyFields[hidden]{display:none}
.quote-form textarea{resize:vertical}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{border-color:var(--blue);outline:3px solid #008acb1c}
.form-two{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.submit-button{width:100%;min-height:49px;border:0;border-radius:9px;color:#fff;background:#414141;font-weight:800;cursor:pointer}
.submit-button:hover,.submit-button:focus-visible{background:#1d1d1d;outline:3px solid #008acb40}
.form-message{min-height:22px;margin:10px 0 0;color:#146448;font-size:14px}
@media(max-width:900px){.workspace,.quote-section{grid-template-columns:1fr}
.building{min-height:470px}
.building>img{min-height:470px}
.result-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){.ei-app{width:min(100% - 20px,1280px);padding-top:20px}
.ei-app>header{flex-direction:column}
.workspace{gap:14px}
.controls,.results,.quote-section{padding:18px}
.building,.building>img{min-height:390px}
.result-grid,.materials,.form-two{grid-template-columns:1fr}
.product-preview{height:152px}
}