/* The open building: orange brand, dark engineering stage, clear learning surfaces. */
[hidden]{display:none!important}
.hero-inner{max-width:1760px;grid-template-columns:minmax(260px,.62fr) minmax(0,1.38fr);gap:clamp(25px,3vw,60px);padding-top:45px;align-items:start}
.hero-copy{padding-top:65px}.hero h1{font-size:clamp(58px,5.6vw,93px);line-height:1.02}.hero h1>span{display:block;color:var(--orange)}.hero-description{max-width:350px;line-height:1.75}.hero-secondary{display:block;color:#cad1d3;font-size:14px;margin:20px 0 0;max-width:300px;text-decoration:underline;text-underline-offset:5px}.hero-proof{margin-top:35px}.hero-invitation{margin-top:54px;display:flex;gap:18px;align-items:flex-start;color:#9facb1;font-size:14px;border-top:1px solid #384045;padding-top:22px;max-width:345px}.hero-invitation strong{font-weight:400;color:#d8dfe1}.invitation-number{font:12px/2 var(--mono);color:var(--orange);white-space:nowrap}
.model-panel{min-width:0;scroll-margin-top:25px}.model-heading{padding-bottom:16px;display:flex;justify-content:space-between;font-family:var(--mono);font-size:12px;letter-spacing:.055em;color:#c6ced2;border-bottom:1px solid #333b40}.model-number{color:#8d9a9f;font-size:12px}.model-toolbar{display:flex;gap:7px;flex-wrap:wrap;margin:16px 0 0}.system-button{min-height:43px;border:1px solid #3e4a50;background:transparent;color:#c1cbd0;padding:9px 16px;display:flex;align-items:center;gap:8px;font-size:14px;transition:background .2s}.system-button:hover{border-color:#9caab1;background:#283237}.system-button.is-active{border-color:var(--orange);color:#15191c;background:var(--orange)}.system-dot,.scene-legend i{display:inline-block;width:7px;height:7px;border-radius:50%;flex-shrink:0}.system-dot.hvac,.key-air{background:#55d7f5}.system-dot.electrical,.key-power{background:#ffce70}.system-dot.plumbing,.key-water{background:#5ee0b7}.system-button.is-active i{background:#172124}
.canvas-wrap{height:590px;position:relative;margin-top:16px;overflow:hidden;border:1px solid #344047;background:radial-gradient(ellipse at 50% 48%,#283b46 0%,#1b282f 47%,#131c21 90%);border-radius:3px}.canvas-wrap canvas{width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab}.canvas-wrap canvas:active{cursor:grabbing}.model-view-label{position:absolute;left:18px;top:17px;pointer-events:none;display:flex;flex-direction:column;gap:6px;max-width:calc(100% - 30px)}.model-view-label>span{font:12px/1.4 var(--mono);letter-spacing:.08em;color:#d5dfe4}.model-view-label>small{font-size:12px;color:#95a7b1;line-height:1.5}.orbit-controls{position:absolute;right:12px;bottom:13px;display:flex;gap:4px;z-index:3}.orbit-controls button{height:42px;min-width:40px;border:1px solid #52616b;background:#152128e8;color:#d8e3e9;font-size:19px;padding:6px 10px;line-height:1}.orbit-controls button:last-child{font-size:14px}.orbit-controls button:hover{border-color:var(--orange);color:var(--orange)}.scene-legend{position:absolute;bottom:23px;left:18px;display:flex;gap:13px;font-size:12px;color:#c3d2da;pointer-events:none}.scene-legend>span{display:inline-flex;align-items:center;gap:6px}.scene-legend i{width:5px;height:5px}
.model-hotspots{position:absolute;inset:0;pointer-events:none}.hotspot{pointer-events:auto;position:absolute;z-index:2;display:flex;gap:8px;align-items:center;border:0;background:transparent;padding:6px;min-width:42px;min-height:42px;color:#fff;transform:translate(-21px,-21px);opacity:0;transition:opacity .2s}.hotspot>span{display:grid;place-items:center;min-width:29px;height:29px;border:1px solid #f6c4b9;background:#bf3825e8;border-radius:50%;font:12px/1 var(--mono);box-shadow:0 0 0 5px #f5533820,0 3px 12px #0005}.hotspot em{font-size:12px;font-style:normal;white-space:nowrap;padding:3px 7px;border:1px solid #54616a;background:#16222bec;opacity:0;transition:opacity .2s;line-height:1.5;box-shadow:0 2px 5px #0004}.hotspot:hover em,.hotspot:focus-visible em,.hotspot[aria-pressed="true"] em{opacity:1}.hotspot[aria-pressed="true"]{z-index:4}.hotspot[aria-pressed="true"]>span{background:#fa5035;border-color:#fff;box-shadow:0 0 0 6px #fa503535}.hotspot.is-left-label{flex-direction:row-reverse;transform:translate(calc(-100% + 21px),-21px)}
.model-subcontrols{display:grid;grid-template-columns:1fr minmax(170px,.7fr);gap:28px;padding:17px 0;align-items:center;border-bottom:1px solid #34424a}.camera-views{display:flex;flex-wrap:wrap;gap:5px}.camera-views button{border:0;border-bottom:2px solid transparent;background:transparent;color:#98acb7;padding:10px 8px;font-size:14px;min-height:43px}.camera-views button.is-active{color:#e5ecef;border-color:var(--orange)}.explode-control{display:block;max-width:none}.explode-control>span{display:flex;justify-content:space-between;gap:16px;font-size:12px;color:#c6d2d7}.explode-control output{font-family:var(--mono);color:#fff}input[type="range"]{width:100%;accent-color:var(--orange);cursor:pointer;min-height:26px;margin:7px 0 0;touch-action:pan-y}.component-story{display:grid;grid-template-columns:64px minmax(0,1fr) auto;align-items:start;gap:17px;padding:22px 0;min-height:168px}.story-index{font:12px/1.65 var(--mono);color:var(--orange)}.component-story strong{display:block;font-size:20px;line-height:1.35;color:#e6ecef;font-weight:500}.component-story p{font-size:14px;line-height:1.75;color:#adbec7;margin-top:8px}.story-takeaway{display:block;font-size:13px;line-height:1.6;color:#75cfe1;margin-top:10px}.story-next{border:1px solid #465762;background:transparent;color:#e1e8ec;min-height:44px;white-space:nowrap;font-size:14px;display:flex;gap:16px;align-items:center;padding:8px 11px}.story-next:hover{border-color:var(--orange)}.build-sequence{border:1px solid #38464d;background:#1c292f70;padding:17px 18px}.sequence-label{font:12px/1.5 var(--mono);color:#a0b1ba;letter-spacing:.04em}.build-sequence>div{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:11px 0 13px}.build-sequence button{display:flex;flex-direction:column;align-items:flex-start;gap:7px;padding:10px;border:0;border-bottom:2px solid #45535c;background:transparent;color:#abb9c1;font-size:14px;min-height:65px}.build-sequence button>span{font:12px/1 var(--mono);color:#8096a2}.build-sequence button.is-active{border-color:var(--orange);color:#fff;background:#394046}.build-sequence button.is-active>span{color:var(--orange)}.build-sequence p{font-size:13px;line-height:1.6;color:#a7b9c3;min-height:42px}.model-footnote{display:flex;justify-content:space-between;gap:15px;font-size:12px;line-height:1.5;color:#91a1aa;padding-top:13px}.hero-baseline{margin-top:20px}.hero-baseline a{font-size:14px}
.learning-lab{background:#f3f5f5;max-width:none}.learning-lab>.section-topline,.learning-lab>.section-intro,.lab-tabs,.experiment,.learning-sources{max-width:1500px;margin-left:auto;margin-right:auto}.learning-lab .section-intro{margin-bottom:42px}.lab-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #cbd3d7;border-bottom:1px solid #cbd3d7}.lab-tabs button{min-height:74px;padding:17px 23px;border:0;border-bottom:3px solid transparent;background:transparent;display:flex;align-items:center;gap:18px;font-size:16px;line-height:1.4;color:#636f76;text-align:left}.lab-tabs button[aria-selected="true"]{color:var(--ink);background:#fff;border-color:var(--orange)}.lab-tabs button+button{border-left:1px solid #cbd3d7}.lab-tabs button>span{font:12px/1.5 var(--mono);color:var(--orange-dark)}.experiment{display:grid;grid-template-columns:1.1fr .9fr;align-items:stretch;margin-top:26px;background:#fff;border:1px solid #d5dcdf}.experiment-visual{background:#18252d;display:flex;flex-direction:column;min-width:0;color:#d3e3eb;position:relative;overflow:hidden}.experiment-overline{font:12px/1.7 var(--mono);display:flex;justify-content:space-between;gap:25px;padding:24px 24px 0;letter-spacing:.03em}.experiment-overline>span:last-child{color:#8da2af;text-align:right;max-width:190px}.experiment-visual>canvas{width:100%;height:400px;flex:1;min-height:300px;display:block}.formula-strip{padding:21px 26px;border-top:1px solid #354852;display:flex;flex-direction:column;gap:10px}.formula-strip>span{font-size:14px;color:#92b0be}.formula-strip>strong{font:16px/1.65 var(--mono);color:#d7f1f7;font-weight:400}.experiment-controls{padding:34px clamp(24px,3vw,54px)}.experiment-controls h3{font-size:40px;line-height:1.1;letter-spacing:-.035em;margin:20px 0 17px}.experiment-controls>p:not(.eyebrow){font-size:16px;line-height:1.7;color:#65737a}.lab-range{display:block;margin-top:22px}.lab-range>span{display:flex;justify-content:space-between;gap:15px;font-size:14px;color:#495b66}.lab-range output{font-family:var(--mono);color:#152934;font-weight:600}.lab-range input{min-height:30px}.experiment-result{border-top:1px solid #d7e0e4;margin-top:22px;padding-top:20px}.experiment-result>span{display:block;color:#5a6e79;font-size:14px}.experiment-result>strong{display:block;font-size:52px;letter-spacing:-.04em;line-height:1.2;font-weight:400;color:#182b36;margin:8px 0}.experiment-result>strong small{font-size:20px;color:#59717e;letter-spacing:0}.experiment-result p{font-size:14px;line-height:1.7;color:#59717e;min-height:48px}.experiment-controls>p.experiment-note{font-size:12px;line-height:1.75;color:#657780;margin-top:17px}.learning-sources{border-bottom:1px solid #cbd3d7;padding:20px 0 0;font-size:14px;color:#586d78}.learning-sources summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding-bottom:17px;list-style:none;min-height:42px}.learning-sources summary::-webkit-details-marker{display:none}.learning-sources[open] summary>span{transform:rotate(45deg)}.learning-sources>div{max-width:800px;padding-bottom:24px}.learning-sources p{font-size:14px;margin-bottom:10px}.learning-sources a{display:block;line-height:1.7;text-decoration:underline;text-underline-offset:3px;padding:7px 0;color:#3f5968}
.challenge-experiment{grid-template-columns:.8fr 1.2fr}.challenge-intro{background:#192932;color:#f5f6f6;padding:37px 42px;display:flex;flex-direction:column}.challenge-large{font-size:clamp(90px,10vw,168px);line-height:1;letter-spacing:-.075em;color:#fa5035;margin:37px 0 24px}.challenge-large>span{font-size:24px;color:#8b9fa9;letter-spacing:0;margin-left:10px}.challenge-intro h3{font-size:36px;letter-spacing:-.035em;line-height:1.15}.challenge-intro>p:not(.eyebrow){font-size:16px;line-height:1.7;color:#9eb2bd;margin-top:20px;max-width:320px}.challenge-progress{display:flex;gap:9px;margin-top:45px}.challenge-progress>span{height:3px;flex:1;background:#52636c}.challenge-progress>.is-current{background:#ff704f}.challenge-progress>.is-complete{background:#8bdfc8}.challenge-body{padding:38px clamp(25px,4vw,65px)}.challenge-body h3{font-size:27px;line-height:1.4;letter-spacing:-.02em;margin:20px 0 24px}.challenge-options{display:flex;flex-direction:column;gap:10px}.challenge-options button{text-align:left;border:1px solid #d0d9de;background:#fff;padding:16px 18px;min-height:54px;line-height:1.5;font-size:16px;display:flex;gap:16px;align-items:center}.challenge-options button>span{font:12px/1.5 var(--mono);color:#6c828e}.challenge-options button:hover{background:#f4f7f8;border-color:#8fa5b1}.challenge-options button.is-wrong{border-color:#ad5a43;background:#fff0e9}.challenge-options button.is-correct{border-color:#378775;background:#e9f5ef;color:#13594a}.challenge-options button:disabled{cursor:default;color:inherit;opacity:1}.challenge-feedback{font-size:14px;color:#355863;line-height:1.8;background:#eff6f6;padding:16px;margin-top:17px}.challenge-feedback strong{display:block;font-size:16px;color:#1c4d58;margin-bottom:5px}.challenge-body .button{margin-top:22px}.challenge-body .button:disabled{opacity:.4;cursor:default;transform:none}.challenge-bottom{font-size:12px;color:#617986;line-height:1.6;margin-top:20px}.contact-whatsapp{display:grid;gap:10px;margin-top:25px}.contact-whatsapp a{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid #b9cac3;padding:15px 18px;font-size:16px;min-height:60px;background:#f3f8f5}.contact-whatsapp a>span{display:flex;flex-direction:column;gap:4px}.contact-whatsapp small{font-size:12px;color:#386957}.contact-whatsapp strong{font-size:17px;line-height:1.4;font-weight:500}.contact-whatsapp a:hover{border-color:#1f7057;background:#e9f3ec}.contact-whatsapp a>span:last-child{font-size:20px;color:#276b54}.contact-panel>p{font-size:16px}.contact-panel .email-help{max-width:400px}.site-header nav{gap:23px}.section-topline span{font-size:14px}
@media(min-width:1500px){.canvas-wrap{height:665px}.hero-copy{padding-top:100px}}
@media(max-width:1150px){.hero-inner{grid-template-columns:minmax(230px,.57fr) minmax(0,1fr);gap:25px}.hero h1{font-size:clamp(51px,5.8vw,69px)}.hero-copy{padding-top:60px}.hero-invitation{display:none}.canvas-wrap{height:535px}.system-button{padding:9px 11px}.component-story{grid-template-columns:45px 1fr;gap:12px}.story-next{grid-column:2;justify-self:start}.model-subcontrols{grid-template-columns:1fr;gap:6px}.explode-control{max-width:290px}.experiment-overline{display:block}.experiment-overline>span:last-child{display:block;text-align:left;max-width:none;margin-top:8px}.experiment-controls{padding:28px}.experiment-controls h3{font-size:33px}.lab-tabs button{padding:16px;gap:12px;font-size:15px}.challenge-intro{padding:30px}.challenge-body{padding:30px}.site-header nav{gap:18px}.site-header{padding-left:28px;padding-right:28px}.scene-legend{bottom:65px}.model-number{display:none}}
@media(max-width:820px){.hero-inner{display:flex;flex-direction:column;padding:40px 24px;gap:34px}.hero-copy{padding-top:0}.hero h1{font-size:clamp(57px,10vw,79px);line-height:1.03}.hero h1>span{display:inline}.hero h1 br{display:block!important}.hero-copy>.eyebrow{margin-bottom:22px}.hero-description{max-width:520px;margin:23px 0}.hero-proof{display:none}.hero-secondary{display:block;margin-top:16px}.model-heading{font-size:12px}.model-number{display:block}.canvas-wrap{height:560px}.model-panel{width:100%}.model-toolbar{gap:7px}.system-button{font-size:14px;min-height:44px;padding:9px 14px;flex:initial}.model-subcontrols{grid-template-columns:1fr minmax(160px,.7fr);gap:15px}.component-story{grid-template-columns:52px 1fr auto;gap:14px;min-height:160px}.story-next{grid-column:auto}.scene-legend{bottom:25px}.experiment{grid-template-columns:1fr}.experiment-visual>canvas{height:330px;min-height:280px;flex:initial}.experiment-overline{display:flex}.experiment-overline>span:last-child{margin:0;text-align:right;max-width:190px}.experiment-controls{padding:30px}.experiment-controls h3 br{display:none}.experiment-controls h3{font-size:34px}.experiment-controls>p{max-width:600px}.experiment-result{display:grid;grid-template-columns:1fr 1fr;column-gap:25px}.experiment-result>span{grid-column:1}.experiment-result>strong{grid-column:1;grid-row:2}.experiment-result>p{grid-column:2;grid-row:1/3;align-self:center}.challenge-experiment{grid-template-columns:1fr}.challenge-intro{display:grid;grid-template-columns:1fr 1fr;gap:10px 30px;padding:28px}.challenge-intro>.eyebrow{grid-column:1/-1}.challenge-large{grid-row:2/4;grid-column:2;margin:0;align-self:center;justify-self:end;font-size:95px}.challenge-intro h3{grid-row:2;grid-column:1;margin:10px 0 0;font-size:30px}.challenge-intro>p:not(.eyebrow){grid-column:1;margin-top:8px;font-size:14px}.challenge-progress{grid-column:1/-1;margin-top:18px}.challenge-body{padding:28px}.lab-tabs button{font-size:14px;padding:15px 12px;display:block;min-height:85px}.lab-tabs button>span{display:block;margin-bottom:8px}.learning-lab .section-intro>p br{display:none}.hero-baseline{margin-top:0}.site-header .brand-type>span{font-size:10px}.site-header nav{gap:12px}.site-header nav>a{font-size:13px}}
@media(max-width:760px){.site-header nav>a{font-size:16px}.site-header .brand-type>span{font-size:12px}.model-number{font-size:12px}.hero-baseline>a{font-size:14px}.hero-baseline>span{font-size:12px;max-width:160px}.section-pad{padding:62px 24px}.component-story strong{font-size:19px}.component-story p{font-size:14px}.hero-copy>.eyebrow{font-size:12px}.hero-description{font-size:16px}}
@media(max-width:540px){.canvas-wrap{height:440px}.model-heading{gap:18px}.model-number{display:none}.model-toolbar{gap:5px}.system-button{padding:8px 11px;gap:6px;font-size:14px;flex:1 0 auto;justify-content:center}.system-button:last-child{flex:1 0 auto}.model-subcontrols{grid-template-columns:1fr;gap:10px}.camera-views{justify-content:space-between}.explode-control{max-width:none}.component-story{grid-template-columns:41px 1fr;gap:11px;min-height:0}.story-next{grid-column:2;padding:9px 15px}.model-view-label{left:12px;top:13px}.model-view-label small{max-width:240px}.scene-legend{bottom:67px;left:14px}.orbit-controls{right:12px}.model-footnote{flex-direction:column;gap:5px}.build-sequence{padding:15px 12px}.build-sequence>div{gap:3px}.build-sequence button{padding:9px 6px;font-size:14px;min-width:0}.hotspot em{display:none}.hero-inner{padding:35px 20px;gap:32px}.hero h1{font-size:61px}.hero-description{font-size:16px}.hero .button{font-size:14px}.hero-secondary{font-size:14px}.learning-lab{padding-left:20px;padding-right:20px}.lab-tabs button{padding:12px 10px;font-size:14px}.experiment-overline{padding:20px 18px 0;display:block;font-size:12px}.experiment-overline>span:last-child{max-width:none;text-align:left;margin-top:8px}.experiment-visual>canvas{height:280px;min-height:260px}.formula-strip{padding:18px}.formula-strip strong{font-size:14px}.experiment-controls{padding:25px 22px}.experiment-controls h3{font-size:32px}.experiment-controls>p:not(.eyebrow){font-size:16px}.experiment-result{display:block}.experiment-result p{min-height:0}.challenge-body{padding:27px 22px}.challenge-intro{padding:27px 22px;gap:9px 15px}.challenge-intro h3{font-size:27px}.challenge-intro>p:not(.eyebrow){font-size:14px}.challenge-large{font-size:78px}.challenge-large>span{font-size:18px}.challenge-body h3{font-size:24px}.challenge-options button{padding:14px 12px;font-size:16px}.contact-whatsapp strong{font-size:16px}}
@media(max-width:360px){.hero h1{font-size:54px}.canvas-wrap{height:410px}.system-button{padding:8px 9px}.build-sequence button{font-size:13px}.model-toolbar{gap:5px}.lab-tabs button{font-size:13px}.challenge-large{font-size:64px}}
@media(prefers-reduced-motion:reduce){.hotspot,.system-button{transition:none}}

.lab-motion-row{max-width:1500px;margin:14px auto -12px;display:flex;justify-content:flex-end;min-height:40px}.lab-motion-row button{border:0;background:transparent;border-bottom:1px solid #98abb3;padding:5px 0;font-size:14px;color:#48606c;min-height:40px}