.construction{background:#050505;border-top:1px solid #292929;border-bottom:1px solid #292929;display:grid;grid-template-columns:1fr 1.1fr;gap:65px;align-items:center;overflow:hidden}.construction-copy>p:not(.eyebrow){font-size:15px;color:#b8b8b8;max-width:420px;margin-top:24px}.construction-copy h2{margin-top:20px}.construction-parts{list-style:none;padding:0;margin:30px 0 0;display:grid;gap:0}.construction-parts button{width:100%;display:flex;gap:17px;align-items:flex-start;text-align:left;background:none;padding:17px 0;border-top:1px solid #343434;color:#aaa}.construction-parts button.active{color:#fff}.construction-parts button>span{font-size:11px;border:1px solid #626262;width:26px;height:26px;display:grid;place-items:center;flex-shrink:0}.construction-parts strong{display:block;font-size:15px;font-weight:400}.construction-parts small{display:block;font-size:12px;line-height:1.6;color:#999;margin-top:5px}.construction-model{min-width:0}.exploded-stage{height:380px;display:grid;place-items:center;perspective:900px;position:relative;background:radial-gradient(ellipse at 50% 78%,#29292955,transparent 55%)}.exploded-scene{width:240px;height:160px;position:relative;transform-style:preserve-3d;transform:rotateX(57deg) rotateZ(-28deg);--explode:.85}.build-layer{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .7s ease,filter .3s,opacity .3s;border-radius:7px;box-shadow:0 10px 25px #0009}.build-layer svg{width:100%;height:100%;display:block;overflow:visible}.build-layer[data-layer="cap"]{transform:translateZ(calc(34px + var(--explode)*112px));background:#161616;border:1px solid #626262;--cap-width:240;--cap-height:160}.build-layer[data-layer="cap"]:before{content:'';position:absolute;left:0;right:0;bottom:-15px;height:15px;transform:rotateX(-90deg);transform-origin:top;background:linear-gradient(#343434,#111);border:1px solid #505050;border-top:0;border-radius:0 0 5px 5px}.build-layer[data-layer="cap"]:after{content:'';position:absolute;top:0;bottom:0;right:-15px;width:15px;transform:rotateY(90deg);transform-origin:left;background:#121212;border:1px solid #414141;border-left:0}.build-layer[data-layer="board"]{transform:translateZ(calc(17px + var(--explode)*57px));background:#252525;border:1px solid #bcbcbc}.build-layer[data-layer="diffuser"]{transform:translateZ(0);background:linear-gradient(130deg,#edededc9,#bdbdbd9e);border:1px solid #fff;box-shadow:0 0 25px #ffffff26,inset 0 0 28px #fff6}.build-layer[data-layer="diffuser"]:after{content:"";position:absolute;top:0;bottom:0;right:-25px;width:25px;transform:rotateY(90deg);transform-origin:left;background:linear-gradient(90deg,#ededed,#b8b8b8);border:1px solid #e8e8e8;border-left:0;border-radius:0 3px 3px 0;box-shadow:0 0 12px #ffffff33}.build-layer.is-highlighted{filter:brightness(1.4);outline:2px solid #fff;outline-offset:5px}.part-badge{position:absolute;right:10px;top:10px;transform:rotateZ(28deg);font:10px Arial;color:white;z-index:2}.layer-glow{position:absolute;left:10%;right:10%;bottom:-20px;height:50px;background:radial-gradient(ellipse,#fff3,transparent 70%);filter:blur(8px);pointer-events:none}.construction-controls{border-top:1px solid #3d3d3d;padding-top:18px;display:grid;grid-template-columns:1fr auto;gap:15px;align-items:center}.construction-controls>label{font-size:11px;color:#bbb;margin:0}.construction-controls>input{grid-column:1/3;margin:2px 0 15px!important;background:#666!important}.construction-controls input[type=range]::-webkit-slider-thumb{background:#fff!important;width:18px;height:18px}.construction-controls>button{background:none;border:1px solid #777;color:white;padding:8px 11px;font-size:10px}.construction-note{font-size:10px!important;color:#888!important;line-height:1.6;margin-top:15px!important}.construction-model output{font-size:11px;color:#bbb}.construction.no-motion .build-layer{transition:none}@media(max-width:900px){.construction{grid-template-columns:1fr;gap:30px}.construction-copy>p:not(.eyebrow){max-width:650px}.construction-parts{grid-template-columns:repeat(3,1fr);gap:20px}.construction-parts button{height:100%}.construction-parts button>span{width:23px;height:23px}.construction-parts strong{font-size:13px}.construction-parts small{font-size:11px}.exploded-stage{height:350px}}@media(max-width:550px){.construction-parts{grid-template-columns:1fr;gap:0}.construction-parts button{padding:14px 0}.construction-copy>p:not(.eyebrow){font-size:13px}.construction-parts strong{font-size:14px}.construction-parts small{font-size:11px}.exploded-stage{height:330px}.exploded-scene{width:210px;height:140px}.construction-controls{grid-template-columns:1fr auto;gap:12px}.construction-controls>label{font-size:10px}.construction-note{font-size:9px!important}}@media(prefers-reduced-motion:reduce){.build-layer{transition:none}}

/* Requested detail revision: shallow four-facet cap and 10 mm diffuser.
   Geometry remains schematic; CSS depth is a visual representation, not a scale. */
.cap-facet{position:absolute;inset:0;clip-path:polygon(0 0,100% 0,0 100%);transform-origin:0 0;backface-visibility:visible;pointer-events:none}
.cap-north{background:linear-gradient(135deg,#363636,#232323);transform:matrix3d(1,0,0,0,.75,.5,.1625,0,0,0,1,0,0,0,0,1)}
.cap-east{background:linear-gradient(135deg,#1d1d1d,#111);transform:matrix3d(0,.666667,0,0,-.75,.5,.1625,0,0,0,1,0,var(--cap-width),0,0,1)}
.cap-south{background:linear-gradient(135deg,#121212,#282828);transform:matrix3d(-1,0,0,0,-.75,-.5,.1625,0,0,0,1,0,var(--cap-width),var(--cap-height),0,1)}
.cap-west{background:linear-gradient(135deg,#454545,#2c2c2c);transform:matrix3d(0,-.666667,0,0,.75,-.5,.1625,0,0,0,1,0,0,var(--cap-height),0,1)}
.build-layer[data-layer="cap"]>.part-badge{transform:translateZ(29px) rotateZ(28deg)}
.build-layer[data-layer="diffuser"]:before{content:"";position:absolute;left:0;right:0;bottom:-25px;height:25px;transform:rotateX(-90deg);transform-origin:top;background:linear-gradient(#fafafa,#c1c1c1);border:1px solid #ededed;border-top:0;border-radius:0 0 3px 3px;box-shadow:0 0 12px #ffffff33}
@media(max-width:550px){.build-layer[data-layer="cap"]{--cap-width:210;--cap-height:140}}