/* Proposed ranges (security uniforms, techwear): "The Blueprint".
   A technical-sheet layer over home.css: grid paper, rulers, dimension marks, callouts and an honest review stamp. */
:root{
  --bp:#0b1830; --bp-2:#10223f; --bp-3:#162c50;
  --redl:#d2553b;
  --plate:#e8ecf1;
}
.page-range{background:var(--paper)}
.js .page-range .curtain{clip-path:inset(0 0 0 0)}

/* section surfaces carry their own colours so text never depends on the body theme timing */
.rg-dark,.rg-light{position:relative;color:var(--fg);background-position:-1px -1px}
.rg-dark{--bg:var(--bp);--fg:var(--chalk);--fg-2:rgba(238,242,247,.7);--line:rgba(238,242,247,.16);--gl:rgba(175,201,236,.09);--gl2:rgba(175,201,236,.04);
  background-color:var(--bp)}
.rg-light{--bg:var(--paper);--fg:var(--ink);--fg-2:rgba(10,17,32,.68);--line:rgba(10,17,32,.15);--gl:rgba(61,90,134,.12);--gl2:rgba(61,90,134,.055);
  background-color:var(--paper)}
.rg-dark,.rg-light,.rh__grid,.rclose__grid{background-image:linear-gradient(var(--gl) 1px,transparent 1px),linear-gradient(90deg,var(--gl) 1px,transparent 1px),linear-gradient(var(--gl2) 1px,transparent 1px),linear-gradient(90deg,var(--gl2) 1px,transparent 1px);background-size:120px 120px,120px 120px,24px 24px,24px 24px}
.rg-dark .display em{color:var(--sky);font-weight:300}
.rg-light .display em{color:var(--steel);font-weight:300}
.sec-lede{margin:18px 0 0;color:var(--fg-2);max-width:56ch;font-size:17px}
.redline-t{color:var(--redl)!important}

/* ---------- the review stamp ---------- */
.stamp{display:inline-grid;justify-items:center;gap:4px;margin:0;padding:10px 18px 9px;border:3px solid var(--redl);border-radius:6px;outline:1.5px solid var(--redl);outline-offset:3px;color:var(--redl);transform:rotate(-4deg);font-family:var(--f-mono);text-transform:uppercase;letter-spacing:.14em;line-height:1;justify-self:start;
  -webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1.6 1.45'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1.6 1.45'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E")}
.stamp span:first-child{font-family:var(--f-display);font-weight:800;font-size:clamp(24px,2.3vw,34px);letter-spacing:.04em}
.stamp span:last-child{font-size:12px;font-weight:700}
.stamp--sm{padding:7px 12px 6px;border-width:2px;outline-offset:2px}
.stamp--sm span:first-child{font-size:18px}
.stamp--sm span:last-child{font-size:11px}

/* ---------- title block (drawing details) ---------- */
.tblock{display:grid;grid-template-columns:repeat(3,auto);margin:0;border:1px solid currentColor;font-size:11px;letter-spacing:.06em}
.tblock div{padding:7px 10px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;display:grid;gap:3px}
.tblock dt{opacity:.6;margin:0;font-size:10.5px}
.tblock dd{margin:0;font-weight:700;font-size:12px}
.tblock__wide{grid-column:1/-1}

/* ---------- HUD + spec pill ---------- */
.dhud{position:fixed;left:var(--gut);bottom:18px;z-index:80;display:flex;align-items:center;gap:12px;height:48px;padding:0 8px 0 18px;border-radius:8px;background:rgba(11,24,48,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(175,201,236,.22);color:var(--chalk);transform:translateY(160%);transition:transform .7s var(--ease)}
.dhud.is-on{transform:none}
.dhud__sheet b{font-family:var(--f-display);font-size:22px;font-weight:800;letter-spacing:0;color:var(--sky);vertical-align:-2px;margin-left:4px}
.dhud__sep{width:1px;height:20px;background:rgba(238,242,247,.2)}
.dhud__lbl{white-space:nowrap;max-width:24ch;overflow:hidden;text-overflow:ellipsis}
.dhud__stamp{padding:5px 8px;border:1.5px solid var(--redl);border-radius:4px;color:#ff8a70;font-weight:700;transform:rotate(-3deg)}
.spec-pill{position:fixed;right:var(--gut);bottom:18px;z-index:80;display:flex;align-items:center;gap:12px;height:48px;padding:0 8px 0 18px;border-radius:8px;background:var(--chalk);color:var(--ink);border:1px solid rgba(10,17,32,.2);box-shadow:0 20px 40px -16px rgba(0,0,0,.5)}
.spec-pill b{display:grid;place-items:center;min-width:32px;height:32px;padding:0 6px;border-radius:4px;background:var(--ink);color:var(--chalk);font-family:var(--f-display);font-size:18px}
.spec-pill[hidden]{display:none}

/* ======================= 00 COVER SHEET ======================= */
.rh{position:relative;height:100vh;height:100svh;min-height:680px;overflow:hidden;background:var(--paper);color:var(--ink);--fg:var(--ink);--fg-2:rgba(10,17,32,.7);--line:rgba(10,17,32,.16);--bg:var(--paper);--gl:rgba(61,90,134,.16);--gl2:rgba(61,90,134,.07)}
.rh__stage{position:absolute;inset:0;overflow:hidden}
.rh__frame{position:absolute;left:50%;top:calc(var(--hdr) - 18px);width:max(100%,150svh,1020px);aspect-ratio:3/2;transform:translateX(-50%);background:#0d2a52}
.rh__blue,.rh__photo,.rh__photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.rh__blue{filter:grayscale(1) invert(1) contrast(1.5) brightness(.9);mix-blend-mode:screen;opacity:.62}
.rh__photo{will-change:clip-path}
.rh__scan{position:absolute;top:0;bottom:0;left:0;width:2px;background:var(--sky);box-shadow:0 0 30px 8px rgba(175,201,236,.7);opacity:0;pointer-events:none;z-index:2}
.rh__stage::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,rgba(246,248,251,.92) 0,rgba(246,248,251,.62) 30%,rgba(246,248,251,0) 52%),linear-gradient(0deg,rgba(246,248,251,.85),rgba(246,248,251,0) 18%)}
.rh__grid{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.9}
.rh__marks i{position:absolute;z-index:2;width:28px;height:28px;border:0 solid var(--steel)}
.rh__marks i:nth-child(1){left:var(--gut);top:calc(var(--hdr) + 6px);border-width:1.5px 0 0 1.5px}
.rh__marks i:nth-child(2){right:var(--gut);top:calc(var(--hdr) + 6px);border-width:1.5px 1.5px 0 0}
.rh__marks i:nth-child(3){left:var(--gut);bottom:76px;border-width:0 0 1.5px 1.5px}
.rh__marks i:nth-child(4){right:var(--gut);bottom:76px;border-width:0 1.5px 1.5px 0}
/* callouts on the photograph */
.rh__call{position:absolute;z-index:3;left:var(--x);top:var(--y);display:flex;flex-direction:row-reverse;align-items:center;transform:translate(calc(-100% + 22px),-50%);color:var(--ink)}
.rh__call--r{flex-direction:row;transform:translate(-22px,-50%)}
.rh__call i{position:relative;flex:none;width:44px;height:44px;display:grid;place-items:center}
.rh__call i::before{content:"";width:14px;height:14px;border-radius:50%;background:var(--sky);border:2px solid var(--ink);box-shadow:0 0 0 6px rgba(175,201,236,.35)}
.rh__call::before{content:"";order:0;width:clamp(40px,6vw,96px);height:0;border-top:1.5px solid var(--ink);transform-origin:right;transform:scaleX(var(--k,1))}
.rh__call--r::before{transform-origin:left}
.rh__call span{order:-1;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;background:rgba(246,248,251,.92);border:1px solid rgba(10,17,32,.4);white-space:nowrap;transition:background .3s,color .3s}
.rh__call--r span{order:1}
.rh__call i{order:-2}
.rh__call--r i{order:-2}
.rh__call:hover span{background:var(--ink);color:var(--chalk)}
.rh__copy{position:absolute;z-index:4;left:var(--gut);top:calc(var(--hdr) + 24px);bottom:100px;width:min(44vw,640px);display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;gap:18px}
.rh .crumbs{display:flex;gap:10px;align-items:center;color:rgba(10,17,32,.66)}
.rh .crumbs a{min-height:32px;display:inline-flex;align-items:center}
.rh .crumbs a:hover{color:var(--steel)}
.rh__kicker{margin:0;color:var(--steel)}
.rh__title{margin:0;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(48px,5.6vw,100px);line-height:.86;letter-spacing:-.005em}
.rh__l{display:inline-block}
.rh__l--em{color:var(--steel);font-weight:300}
.rh__lede{margin:0;max-width:46ch;font-size:17px;color:rgba(10,17,32,.78)}
.rh__ctas{display:flex;gap:12px;flex-wrap:wrap}
.stamp--hero{margin:4px 0 2px 4px}
.rh__block{position:absolute;z-index:4;right:var(--gut);bottom:84px;width:min(330px,30vw);background:rgba(246,248,251,.88);color:var(--ink);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.rh__tl{position:absolute;z-index:5;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid rgba(10,17,32,.2);background:rgba(246,248,251,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.rh__tl a{position:relative;display:flex;align-items:center;gap:12px;min-height:60px;padding:0 20px;border-right:1px solid rgba(10,17,32,.1);font-weight:500;transition:background .3s}
.rh__tl a:last-child{border-right:0}
.rh__tl a::before{content:"";position:absolute;left:0;top:-1px;height:2px;width:0;background:var(--steel);transition:width .5s var(--ease)}
.rh__tl a:hover{background:rgba(10,17,32,.05)}.rh__tl a:hover::before{width:100%}
.rh__tl b{color:var(--steel);font-weight:500}

/* ======================= 01 GARMENT ARCHITECTURE ======================= */
.arch{padding-bottom:clamp(80px,12vh,140px)}
.arch__grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,3vw,48px);padding:0 var(--gut);align-items:start}
.arch__nums{display:none}
.reg{position:relative;display:grid;grid-template-columns:1fr;gap:12px;padding:34px 0 34px;min-height:42vh;border-top:1px solid var(--line);opacity:.36;transition:opacity .6s var(--ease)}
.reg:last-child{border-bottom:1px solid var(--line)}
.reg.is-on{opacity:1}
.reg::before{content:"";position:absolute;left:0;top:-1px;height:2px;width:0;background:var(--sky);transition:width .8s var(--ease)}
.reg.is-on::before{width:100%}
.reg__fig{position:relative;margin:0;aspect-ratio:4/5;border-radius:8px;overflow:hidden;background:var(--plate)}
.reg__fig img{width:100%;height:100%;object-fit:cover}
.js .reg__fig{display:none}
.reg__body{display:grid;gap:14px;align-content:start}
.reg__no{display:flex;align-items:center;gap:14px;margin:0;color:var(--fg-2)}
.reg__no b{display:inline-grid;place-items:center;min-width:44px;height:26px;border:1px solid var(--sky);color:var(--sky);border-radius:3px}
.reg__h{margin:0;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(36px,3.4vw,58px);line-height:.9}
.reg__spec{margin:0;color:var(--fg-2);max-width:48ch;font-size:16.5px}
.reg__legend{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.reg__legend li{display:flex;gap:10px;font-size:14.5px;color:var(--fg-2)}
.reg__legend b{color:var(--fg);font-weight:600}
.js .reg__legend{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.reg__ctas{display:flex;align-items:center;gap:10px 24px;flex-wrap:wrap}
.reg__add,.zone__pick{display:inline-flex;align-items:center;gap:14px;min-height:48px;padding:0 8px 0 18px;border-radius:6px;border:1px solid var(--line);font-weight:600;font-size:15px;transition:background .35s,color .35s,border-color .35s}
.reg__add i,.zone__pick i{font-style:normal;display:grid;place-items:center;width:32px;height:32px;border-radius:4px;background:var(--fg);color:var(--bg);font-size:20px;transition:transform .5s var(--ease)}
.reg__add:hover,.zone__pick:hover{border-color:var(--fg)}
.reg__add[aria-pressed="true"],.zone__pick[aria-pressed="true"]{background:var(--sky);color:var(--ink);border-color:var(--sky)}
.reg__add[aria-pressed="true"] i,.zone__pick[aria-pressed="true"] i{transform:rotate(135deg);background:var(--ink);color:var(--sky)}
.reg__note{margin:0;color:#ff8a70;font-size:11.5px}
.rg-light .reg__note{color:var(--redl)}
.reg__ctas .link-arrow{font-size:14.5px}

/* the drafting board (desktop) */
.arch__board{position:sticky;top:calc(var(--hdr) + 12px);height:calc(100vh - var(--hdr) - 24px);height:calc(100svh - var(--hdr) - 24px);min-height:560px}
.board{--tick:rgba(175,201,236,.55);position:relative;height:100%;border:1px solid rgba(175,201,236,.28);background:rgba(7,16,33,.55);overflow:hidden;container-type:size}
.board__ruler{position:absolute;pointer-events:none}
.board__ruler--x{left:28px;right:0;top:0;height:22px;border-bottom:1px solid rgba(175,201,236,.28);background:repeating-linear-gradient(90deg,var(--tick) 0 1px,transparent 1px 12px) left bottom/100% 6px no-repeat,repeating-linear-gradient(90deg,var(--tick) 0 1px,transparent 1px 60px) left bottom/100% 13px no-repeat}
.board__ruler--y{left:0;top:22px;bottom:0;width:28px;border-right:1px solid rgba(175,201,236,.28);background:repeating-linear-gradient(180deg,var(--tick) 0 1px,transparent 1px 12px) right top/6px 100% no-repeat,repeating-linear-gradient(180deg,var(--tick) 0 1px,transparent 1px 60px) right top/13px 100% no-repeat}
.board__corner{position:absolute;width:18px;height:18px;border:0 solid var(--sky);opacity:.7}
.board__corner--tl{left:40px;top:34px;border-width:1px 0 0 1px}.board__corner--tr{right:12px;top:34px;border-width:1px 1px 0 0}
.board__corner--bl{left:40px;bottom:12px;border-width:0 0 1px 1px}.board__corner--br{right:12px;bottom:12px;border-width:0 1px 1px 0}
.board__plate{position:absolute;left:calc(50% + 14px);top:calc(22px + (100cqh - 22px - 72px - var(--ph)) / 2);--ph:min(calc(100cqh - 150px),calc((100cqw - 400px) * 1.25));height:var(--ph);aspect-ratio:4/5;transform:translateX(-50%);background:var(--plate);box-shadow:0 0 0 1px rgba(175,201,236,.4),0 40px 70px -30px rgba(0,0,0,.7);overflow:hidden}
.board__zoom{position:absolute;inset:0;transition:transform 1.1s var(--ease);will-change:transform}
.board__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.board__img--next{clip-path:inset(0 0 100% 0)}
.board__scan{position:absolute;left:0;right:0;top:0;height:2px;background:var(--sky);box-shadow:0 0 22px 6px rgba(175,201,236,.65);opacity:0;pointer-events:none;z-index:3}
.board__dots{position:absolute;inset:0;z-index:2}
.bdot{position:absolute;left:var(--x);top:var(--y);width:44px;height:44px;margin:-22px;display:grid;place-items:center;border-radius:50%;transition:opacity .4s}
.bdot::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--sky);border:2px solid var(--ink);box-shadow:0 0 0 5px rgba(13,42,82,.22);transition:transform .4s var(--ease),background .3s}
.bdot::after{content:"";position:absolute;inset:8px;border-radius:50%;border:1px solid rgba(13,42,82,.5);animation:bping 2.6s var(--ease) infinite}
@keyframes bping{0%{transform:scale(.5);opacity:1}80%,100%{transform:scale(1.4);opacity:0}}
.bdot.is-hot::before{transform:scale(1.5);background:var(--redl)}
.board.is-hot .bdot:not(.is-hot){opacity:.35}
.board.is-zoom .bdot:not(.is-hot){opacity:0;pointer-events:none}
.board__detail{position:absolute;z-index:3;left:10px;top:10px;padding:6px 10px;background:var(--ink);color:var(--sky);opacity:0;transform:translateY(-6px);transition:opacity .4s,transform .5s var(--ease)}
.board.is-zoom .board__detail{opacity:1;transform:none}
.board__leads{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible;z-index:1}
.board__leads path{fill:none;stroke:rgba(175,201,236,.7);stroke-width:1;transition:stroke .3s,opacity .3s}
.board__leads circle{fill:var(--sky)}
.board.is-hot .board__leads path:not(.is-hot){opacity:.25}
.board__leads path.is-hot{stroke:var(--chalk);stroke-width:1.5}
.board__labels{position:absolute;inset:0;z-index:2;pointer-events:none}
.blabel{position:absolute;width:var(--lw,170px);display:grid;gap:3px;padding:6px 0;pointer-events:auto;cursor:pointer;transition:opacity .35s}
.blabel--l{text-align:right}
.blabel .mono{color:var(--sky);font-size:11px}
.blabel b{font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:21px;line-height:.95;color:var(--chalk)}
.blabel span:last-child{font-size:12.5px;line-height:1.35;color:rgba(238,242,247,.66)}
.board.is-hot .blabel:not(.is-hot){opacity:.3}
.blabel.is-hot b{color:var(--sky)}
.board__dim{position:absolute;pointer-events:none;color:rgba(175,201,236,.75)}
.board__dim span{position:absolute;white-space:nowrap;font-size:10.5px;background:var(--bp);padding:2px 6px}
.board__dim--v{border-left:1px solid currentColor;z-index:2;color:rgba(13,42,82,.55)}
.board__dim--v span{background:var(--plate)!important}
.board__dim--v::before,.board__dim--v::after{content:"";position:absolute;left:-6px;width:11px;border-top:1px solid currentColor}
.board__dim--v::before{top:0}.board__dim--v::after{bottom:0}
.board__dim--v span{left:0;top:50%;transform:translate(-50%,-50%) rotate(-90deg)}
.board__dim--h{border-top:1px solid currentColor}
.board__dim--h::before,.board__dim--h::after{content:"";position:absolute;top:-6px;height:11px;border-left:1px solid currentColor}
.board__dim--h::before{left:0}.board__dim--h::after{right:0}
.board__dim--h span{left:50%;top:0;transform:translate(-50%,-50%)}
.board__block{position:absolute;right:12px;bottom:12px;left:40px;grid-template-columns:76px minmax(0,1fr) 46px minmax(0,1.1fr) 92px;color:rgba(238,242,247,.85);border-color:rgba(175,201,236,.35);background:rgba(11,24,48,.92)}
.board__block div{border-color:rgba(175,201,236,.25)}
.board__block .tblock__wide{grid-column:auto}
.board__block dd{font-size:13px}
#bName{font-family:var(--f-display);font-size:18px;letter-spacing:.02em;text-transform:uppercase}
#bOn.is-on{color:var(--sky)}

/* mobile figure dots + caption */
.fdot{position:absolute;left:var(--x);top:var(--y);width:44px;height:44px;margin:-22px;display:grid;place-items:center;z-index:2}
.fdot::before{content:attr(data-n);display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--sky);color:var(--ink);border:1.5px solid var(--ink);font-family:var(--f-mono);font-size:11px;font-weight:700;transition:transform .3s var(--ease),background .3s}
.fdot.is-hot::before{background:var(--redl);color:#fff;transform:scale(1.2)}
.reg__cap{position:absolute;left:8px;right:8px;bottom:8px;z-index:3;margin:0;padding:8px 10px;background:rgba(10,17,32,.9);color:var(--chalk);border-left:2px solid var(--sky);font-size:13px;line-height:1.35;min-height:44px}
.reg__cap b{display:block;font-family:var(--f-mono);font-size:12px;color:var(--sky);margin-bottom:2px;letter-spacing:.06em;text-transform:uppercase}

/* ======================= 02 SPEC LIST BUILDER ======================= */
.spec{padding-bottom:clamp(80px,12vh,140px)}
.spec__grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,4vw,72px);padding:0 var(--gut);align-items:start}
.spec__set{border:0;margin:0 0 38px;padding:0;min-width:0}
.spec__set legend{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:var(--fg-2)}
.spec__set legend b{display:inline-grid;place-items:center;width:28px;height:28px;border:1px solid var(--fg);color:var(--fg);border-radius:3px}
.spec__chips{display:flex;flex-wrap:wrap;gap:8px}
.spec__chips .pick span{border-radius:6px;min-height:46px;font-size:15px}
.spec__chips .pick span em{font-size:11px}
.spec__qs{border-top:1px solid var(--line)}
.qrow{position:relative;display:grid;grid-template-columns:56px 1fr 28px;gap:12px;align-items:center;min-height:56px;padding:8px 0;border-bottom:1px solid var(--line);cursor:pointer;font-size:15.5px;transition:background .3s}
.qrow:hover{background:rgba(61,90,134,.06)}
.qrow input{position:absolute;opacity:0;inset:0;cursor:pointer;margin:0}
.qrow .mono{color:var(--fg-2)}
.qrow__box{width:24px;height:24px;border:1.5px solid var(--fg);border-radius:3px;display:grid;place-items:center;font-size:15px;line-height:1}
.qrow input:checked~.qrow__box{background:var(--ink);color:var(--chalk)}
.qrow input:checked~.qrow__box::before{content:"✓"}
.qrow input:focus-visible~.qrow__box{outline:2px solid var(--steel);outline-offset:3px}
.spec__side{position:sticky;top:calc(var(--hdr) + 20px);display:grid;gap:18px}
.ssheet{position:relative;display:grid;gap:16px;padding:26px 26px 22px;background:#fbfcfe;color:var(--ink);border:1px solid rgba(10,17,32,.2);box-shadow:0 40px 80px -40px rgba(10,17,32,.45);background-image:linear-gradient(rgba(61,90,134,.08) 1px,transparent 1px);background-size:100% 28px}
.ssheet__top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.ssheet__top img{width:92px}
.ssheet__top .mono{margin:0;color:#5c6170;font-size:11px}
.ssheet__range{margin:0;font-family:var(--f-display);font-weight:900;text-transform:uppercase;font-size:clamp(34px,3vw,46px);line-height:.9}
.ssheet__sec{display:grid;gap:8px;border-top:1px solid rgba(10,17,32,.2);padding-top:12px}
.ssheet__h{margin:0;color:#5c6170;display:flex;justify-content:space-between}
.ssheet__h span{color:var(--ink);font-weight:700}
.ssheet__items,.ssheet__qs{list-style:none;margin:0;padding:0;display:grid;gap:8px;max-height:280px;overflow:auto}
.ssheet__items li{display:grid;grid-template-columns:34px 1fr;gap:2px 8px}
.ssheet__items li b{font-family:var(--f-mono);font-size:11px;color:var(--steel);padding-top:3px}
.ssheet__items li strong{font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:20px;line-height:1}
.ssheet__items li small{grid-column:2;font-size:12.5px;color:#5c6170}
.ssheet__qs li{display:grid;grid-template-columns:44px 1fr;gap:8px;font-size:13.5px;line-height:1.35}
.ssheet__qs li b{font-family:var(--f-mono);font-size:11px;color:var(--steel)}
.ssheet li.is-empty{display:block;color:#7a8090;font-style:italic;font-size:13.5px}
.ssheet__env{margin:0;font-weight:600}
.ssheet__foot{margin:0;padding-top:12px;border-top:1px dashed rgba(10,17,32,.3);color:#5c6170;font-size:11px;line-height:1.5;text-transform:none;letter-spacing:.02em}
.spec__ctas{display:flex;align-items:center;gap:12px 24px;flex-wrap:wrap}
.spec__ctas .link-arrow i{font-size:18px}

/* ======================= 03 ENVIRONMENT ZONES ======================= */
.env{padding-bottom:clamp(80px,12vh,140px)}
.env__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:0 var(--gut);border:1px solid var(--line)}
.zone{position:relative;display:grid;gap:16px;align-content:start;padding:clamp(22px,2.6vw,38px);border-right:1px solid var(--line);overflow:hidden;transition:background .5s}
.zone:last-child{border-right:0}
.zone:hover{background:rgba(175,201,236,.04)}
.zone__k{display:flex;align-items:center;gap:12px;margin:0;color:var(--sky)}
.zone__l{position:absolute;right:-.06em;top:-.16em;font-family:var(--f-display);font-weight:900;font-size:clamp(150px,15vw,260px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(175,201,236,.28);letter-spacing:0;pointer-events:none}
.zone h3{margin:40px 0 0;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(38px,3.6vw,62px);line-height:.9;position:relative}
.zone>p:not(.zone__k):not(.zone__rel){margin:0;color:var(--fg-2);max-width:40ch;position:relative}
.zone__rel{margin:10px 0 0;color:var(--fg-2)}
.zone__thumbs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.zone__thumbs a{display:grid;gap:6px;font-size:12px;line-height:1.25;color:var(--fg-2);transition:color .3s}
.zone__thumbs a:hover{color:var(--fg)}
.zone__thumbs img{width:100%;aspect-ratio:4/5;object-fit:cover;background:var(--plate);border-radius:4px;transition:transform .8s var(--ease)}
.zone__thumbs a:hover img{transform:translateY(-4px)}
.zone__thumbs span{font-family:var(--f-mono);letter-spacing:.04em;text-transform:uppercase;font-size:12px}
.zone__pick{justify-self:start;margin-top:6px}

/* ======================= 04 MATERIAL SCHEDULE ======================= */
.sched{padding-bottom:clamp(80px,12vh,140px)}
.sched__table{margin:0 var(--gut);border-top:2px solid var(--fg)}
.sched__head,.sched__row{display:grid;grid-template-columns:90px minmax(0,.9fr) minmax(0,1.4fr) minmax(200px,.8fr);gap:24px;align-items:start}
.sched__head{padding:12px 0;border-bottom:1px solid var(--line);color:var(--fg-2)}
.sched__row{padding:26px 0;border-bottom:1px solid var(--line);position:relative}
.sched__row::after{content:"";position:absolute;left:0;bottom:-1px;height:1px;width:0;background:var(--fg);transition:width .9s var(--ease)}
.sched__row:hover::after{width:100%}
.sched__ref{margin:6px 0 0;color:var(--steel)}
.sched__row h3{margin:0;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(32px,3vw,50px);line-height:.92}
.sched__row>p:not(.sched__ref){margin:4px 0 0;color:var(--fg-2);font-size:16.5px;max-width:52ch}
.sched__sw{position:relative;margin:0;aspect-ratio:3/2;overflow:hidden;border-radius:4px;background:var(--ink-2);cursor:zoom-in}
.sched__sw img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease);transform-origin:var(--mx,50%) var(--my,50%)}
.sched__sw:hover img{transform:scale(2.2)}
.sched__sw figcaption{position:absolute;left:8px;bottom:8px;padding:4px 8px;background:rgba(10,17,32,.75);color:var(--chalk);font-size:11px}
.care{display:grid;gap:8px;padding:16px;border:1.5px dashed rgba(10,17,32,.4);border-radius:4px;background:#fbfcfe}
.care__h{margin:0;color:var(--steel)}
.care__f{display:flex;justify-content:space-between;gap:12px;margin:0;border-bottom:1px solid var(--line);padding-bottom:6px}
.care__f b{font-family:var(--f-mono);font-weight:500;color:var(--fg-2)}
.care__n{margin:0;color:var(--fg-2);font-size:11px;text-transform:none;letter-spacing:.02em}

/* ======================= 05 IDENTIFICATION / BRANDING ======================= */
.ident{padding:clamp(100px,14vh,160px) var(--gut)}
.ident__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:clamp(32px,6vw,100px);align-items:center}
.ident__copy{display:grid;gap:26px}
.pts{list-style:none;margin:0;padding:0;display:grid;border-top:1px solid var(--line)}
.pts li{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.pts b{color:var(--sky);padding-top:6px}
.pts--light b{color:var(--steel)}
.pts h3{margin:0 0 4px;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:28px;line-height:1}
.pts p{margin:0;color:var(--fg-2);font-size:16px}
.ident__tabs,.seg{display:inline-flex;justify-self:start;border:1px solid var(--line);border-radius:6px;padding:4px;gap:4px;flex-wrap:wrap}
.ident__tabs button,.seg button{min-height:44px;padding:0 16px;border-radius:4px;font-weight:600;font-size:14.5px;color:var(--fg-2);transition:background .3s,color .3s}
.ident__tabs button[aria-pressed="true"],.seg button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.place{position:relative;margin:0;aspect-ratio:4/5;max-height:80vh;justify-self:center;width:100%;max-width:580px;background:var(--plate);border:1px solid rgba(175,201,236,.35)}
.place img{width:100%;height:100%;object-fit:cover}
.place__zone{position:absolute;left:var(--x);top:var(--y);width:var(--w);height:var(--h);border:1.5px dashed rgba(13,42,82,.55);transition:border-color .4s,background .4s,box-shadow .4s}
.place__zone em{position:absolute;left:0;top:calc(100% + 6px);padding:4px 8px;background:var(--ink);color:var(--sky);font-size:11px;white-space:nowrap;opacity:0;transform:translateY(-4px);transition:opacity .4s,transform .5s var(--ease)}
.place__zone::before,.place__zone::after{content:"";position:absolute;opacity:0;transition:opacity .4s;border:0 solid var(--redl)}
.place__zone::before{left:0;right:0;top:-12px;height:6px;border-width:1px 1px 0}
.place__zone::after{top:0;bottom:0;right:-12px;width:6px;border-width:1px 1px 1px 0}
.place__zone.is-on{border:2px solid var(--redl);background:rgba(210,85,59,.12);box-shadow:0 0 0 4px rgba(210,85,59,.12)}
.place__zone.is-on em,.place__zone.is-on::before,.place__zone.is-on::after{opacity:1;transform:none}
.place figcaption{position:absolute;left:0;right:0;bottom:-34px;color:var(--fg-2);font-size:11px;text-align:center}
.methods{display:flex;flex-wrap:wrap;gap:6px}
.methods span{display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border:1px dashed var(--line);border-radius:4px;font-size:13px;color:var(--fg-2)}

/* ======================= 06 MEASURE ======================= */
.measure{padding:clamp(100px,14vh,160px) var(--gut)}
.measure__grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr);gap:clamp(32px,6vw,100px);align-items:center}
.measure__copy{display:grid;gap:24px}
.mfig{position:relative;margin:0 0 30px;aspect-ratio:4/5;max-height:82vh;width:100%;max-width:560px;justify-self:center;background:var(--plate);border:1px solid rgba(10,17,32,.18)}
.mfig img{width:100%;height:100%;object-fit:cover}
.mline{position:absolute;left:var(--x);top:var(--y);color:var(--steel);transition:color .4s}
.mline--h{width:var(--l);border-top:1.5px dashed currentColor}
.mline--v{height:var(--l);border-left:1.5px dashed currentColor}
.mline--h::before,.mline--h::after{content:"";position:absolute;top:-7px;height:13px;border-left:1.5px solid currentColor}
.mline--h::before{left:0}.mline--h::after{right:0}
.mline--v::before,.mline--v::after{content:"";position:absolute;left:-7px;width:13px;border-top:1.5px solid currentColor}
.mline--v::before{top:0}.mline--v::after{bottom:0}
.mline em{position:absolute;padding:3px 7px;background:var(--steel);color:#fff;font-size:10.5px;white-space:nowrap;transition:background .4s}
.mline--h em{left:50%;top:-30px;transform:translateX(-50%)}
.mline--v em{left:12px;top:50%;transform:translateY(-50%)}
.mfig[data-mode="garment"] .mline{color:var(--redl)}
.mfig[data-mode="garment"] .mline--h{border-top-style:solid}
.mfig[data-mode="garment"] .mline--v{border-left-style:solid}
.mfig[data-mode="garment"] .mline em{background:var(--redl)}
.mfig figcaption{position:absolute;left:0;right:0;top:calc(100% + 10px);font-size:11px;color:var(--fg-2);text-transform:none;letter-spacing:.02em}

/* ======================= 07 FLOW ======================= */
.flow{padding-bottom:clamp(80px,12vh,140px)}
.flow__wrap{position:relative;display:grid;grid-template-columns:minmax(200px,.3fr) 1fr;gap:clamp(24px,4vw,64px);padding:0 var(--gut);align-items:start}
.flow__intro h3,.refcard h3{margin:0 0 8px;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:34px;line-height:.95}
.flow__intro p{margin:0;color:var(--fg-2)}
.flow__chain{position:relative;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;counter-reset:f}
.flow__chain li{position:relative;display:grid;gap:10px;align-content:start;min-height:150px;padding:16px 14px;border:1px solid var(--line);background:rgba(7,16,33,.5);opacity:.4;transition:opacity .5s,border-color .5s,background .5s}
.flow__chain li.is-on{opacity:1;border-color:var(--sky);background:rgba(175,201,236,.07)}
.flow__chain li:not(:last-child)::after{content:"→";position:absolute;right:-14px;top:50%;width:14px;text-align:center;transform:translateY(-50%);color:var(--sky);font-size:13px}
.flow__chain b{color:var(--sky)}
.flow__chain span{font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(20px,1.7vw,28px);line-height:.95}
.flow__chain li.is-open{border-style:dashed}
.flow__line{grid-column:2;position:relative;height:2px;background:rgba(238,242,247,.14);margin-top:-6px}
.flow__line i{position:absolute;inset:0;background:var(--sky);transform-origin:left;transform:scaleX(0)}
.refcard{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,4vw,64px);margin:clamp(48px,8vh,90px) var(--gut) 0;padding:clamp(22px,3vw,40px);border:1px solid var(--line);background:rgba(7,16,33,.45)}
.refcard__copy p{margin:0;color:var(--fg-2);max-width:46ch}
.refcard__fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.refcard__fields div{display:grid;gap:8px;padding:14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.refcard__fields dt{color:var(--fg-2);font-size:11px}
.refcard__fields dd{margin:0;color:var(--sky);font-size:12px;border-bottom:1px dashed rgba(175,201,236,.5);padding-bottom:4px}
.opens{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.opens li{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 12px;border:1px dashed rgba(255,138,112,.7);color:var(--chalk);font-size:14px;border-radius:4px}
.opens li b{font-family:var(--f-mono);font-size:10.5px;color:#ff8a70;letter-spacing:.08em}

/* ======================= 08 RFI / FAQ ======================= */
.rfi{padding:clamp(100px,14vh,160px) var(--gut)}
.rfi__grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,6vw,100px);align-items:start}
.rfi__head{display:grid;gap:4px;position:sticky;top:calc(var(--hdr) + 24px)}
.rfi__list{border-top:2px solid var(--fg)}
.rfi details{border-bottom:1px solid var(--line)}
.rfi summary{list-style:none;display:grid;grid-template-columns:64px 1fr 40px;align-items:center;gap:14px;min-height:76px;padding:14px 0;cursor:pointer;font-family:var(--f-display);font-weight:700;text-transform:uppercase;font-size:clamp(21px,1.9vw,28px);line-height:1.05}
.rfi summary::-webkit-details-marker{display:none}
.rfi summary .mono{font-family:var(--f-mono);font-weight:500;color:var(--steel);font-size:12px}
.rfi summary i{position:relative;width:40px;height:40px;border-radius:4px;border:1px solid var(--line);transition:background .3s,transform .5s var(--ease)}
.rfi summary i::before,.rfi summary i::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:1.5px;background:currentColor;transform:translate(-50%,-50%)}
.rfi summary i::after{transform:translate(-50%,-50%) rotate(90deg)}
.rfi details[open] summary i{transform:rotate(45deg);background:var(--ink);color:var(--chalk)}
.rfi__body{padding:0 54px 24px 78px}
.rfi__body p{margin:0 0 14px;color:var(--fg-2);font-size:16.5px;max-width:62ch}
.qadd{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-weight:600;transition:background .3s,color .3s}
.qadd[aria-pressed="true"]{background:var(--ink);color:var(--chalk);border-color:var(--ink)}

/* ======================= 09 BRIEF ======================= */
.rbrief{padding:clamp(100px,14vh,160px) var(--gut) clamp(80px,12vh,140px)}
.rbrief__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(32px,6vw,110px);align-items:start}
.rbrief__left{display:grid;gap:22px}
.rbrief__left .fine{margin:0}
.rform{gap:18px}
.field select{width:100%;min-height:52px;border-radius:12px;border:1px solid var(--line);background:transparent;padding:12px 16px;font-size:16px;color:inherit;font-family:inherit;-webkit-appearance:none;appearance:none;background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:calc(100% - 22px) 50%,calc(100% - 16px) 50%;background-size:6px 6px;background-repeat:no-repeat}
.field select:focus{outline:none;border-color:var(--fg)}
.rform__more{border:1px solid var(--line);border-radius:12px}
.rform__more summary{list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:52px;padding:0 16px;cursor:pointer}
.rform__more summary::-webkit-details-marker{display:none}
.rform__more summary i{font-style:normal;font-size:20px;transition:transform .4s var(--ease)}
.rform__more[open] summary i{transform:rotate(45deg)}
.rform__more-in{display:grid;gap:14px;padding:4px 16px 18px}
.rform__file input{padding:12px 10px;font-size:14px}
.rform__file small{color:var(--fg-2);font-size:12.5px}
.rbrief .bform__ctas .link-arrow{font-size:15px}
.rbrief .fine a{text-decoration:underline}
.rbrief__right{position:sticky;top:calc(var(--hdr) + 20px);display:grid;justify-items:center;padding-top:10px}
.transmittal{position:relative;width:min(420px,100%);display:grid;gap:14px;padding:30px 26px 24px;background:#fbfcfe;color:var(--ink);border:1px solid rgba(10,17,32,.22);box-shadow:0 40px 80px -30px rgba(10,17,32,.45);transform:rotate(1.5deg)}
.transmittal::before{content:"";position:absolute;inset:8px;border:1px solid rgba(10,17,32,.12);pointer-events:none}
.transmittal__top{display:flex;justify-content:space-between;align-items:center}
.transmittal__top img{width:92px}
.transmittal__top .mono{margin:0;font-size:11px;color:#5c6170}
.transmittal__to{margin:0;color:#5c6170;font-size:11px}
.transmittal__co{margin:0;font-family:var(--f-display);font-weight:900;text-transform:uppercase;font-size:36px;line-height:.9;overflow-wrap:anywhere}
.transmittal__dl{margin:0;border-top:1px solid rgba(10,17,32,.18)}
.transmittal__dl div{display:grid;grid-template-columns:96px 1fr;gap:10px;padding:8px 0;border-bottom:1px solid rgba(10,17,32,.14)}
.transmittal__dl dt{margin:0;color:#5c6170;font-size:11px}
.transmittal__dl dd{margin:0;font-weight:600;font-size:14px;overflow-wrap:anywhere}
.transmittal__purpose{margin:0;font-size:11px;color:#5c6170}
.transmittal__purpose b{color:var(--ink)}
.transmittal__stamp{justify-self:end;margin:-6px 6px 4px 0}
.transmittal.is-issued::after{content:"ISSUED FOR QUOTE REVIEW";position:absolute;left:50%;top:56%;transform:translate(-50%,-50%) rotate(-10deg);padding:8px 14px;border:3px solid var(--steel);border-radius:6px;color:var(--steel);font-family:var(--f-display);font-weight:900;font-size:26px;letter-spacing:.04em;white-space:nowrap;background:rgba(251,252,254,.82)}

/* ======================= 10 CLOSING ======================= */
.rclose{padding:0}
.rclose__stage{position:relative;min-height:100vh;min-height:100svh;display:grid;place-items:center;overflow:hidden}
.rclose__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(1) invert(1) contrast(1.4) brightness(.55);mix-blend-mode:screen;opacity:.55;transform-origin:60% 40%}
.rclose__stage::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,24,48,.35),rgba(11,24,48,.2) 40%,var(--bp));pointer-events:none}
.rclose__grid{position:absolute;inset:0;z-index:1;pointer-events:none;--gl:rgba(175,201,236,.12);--gl2:rgba(175,201,236,.05)}
.rclose__inner{position:relative;z-index:2;display:grid;justify-items:center;text-align:center;gap:26px;padding:120px var(--gut)}
.rclose__k{margin:0;color:var(--sky)}
.rclose__title{margin:0;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(60px,10.5vw,190px);line-height:.84}
.rclose__title span{display:block}
.rclose__title span:last-child{color:transparent;-webkit-text-stroke:2px var(--chalk)}
.rclose__lede{margin:0;font-size:18px;color:rgba(238,242,247,.8)}
.rclose__ctas{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:16px 28px}
.rclose__disc{margin:0;max-width:60ch;text-align:center}
.next-step{position:relative;z-index:1;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 32px;padding:28px var(--gut);border-top:1px solid rgba(238,242,247,.14)}
.next-step__h{margin:0;color:var(--sky)}
.next-step__links{display:flex;flex-wrap:wrap;gap:8px 28px}
.rstrip{position:relative;z-index:1;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:12px;padding:28px var(--gut) 60px;border-top:1px solid rgba(238,242,247,.14)}
.rstrip__card{position:relative;display:block;aspect-ratio:4/5;overflow:hidden;border-radius:6px;background:var(--bp-2);isolation:isolate}
.rstrip__card--lead{aspect-ratio:auto}
.rstrip__card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease),filter .8s;z-index:-1}
.rstrip__card--lead img{object-position:72% 50%}
.rstrip__card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(11,24,48,0) 40%,rgba(11,24,48,.9))}
.rstrip__card:hover img{transform:scale(1.06)}
.rstrip__t{position:absolute;left:16px;right:56px;bottom:14px;display:grid;gap:6px;font-family:var(--f-display);font-weight:800;text-transform:uppercase;font-size:clamp(30px,2.6vw,44px);line-height:.92;color:var(--chalk)}
.rstrip__t em{font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.08em;color:var(--sky)}
.rstrip__card i{position:absolute;right:14px;bottom:16px;width:36px;height:36px;display:grid;place-items:center;border:1px solid rgba(238,242,247,.5);border-radius:4px;font-style:normal;color:var(--chalk);transition:transform .5s var(--ease),background .3s}
.rstrip__card:hover i{transform:rotate(45deg);background:var(--chalk);color:var(--ink)}
.rclose .ftr{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}

/* ======================= RESPONSIVE ======================= */
@media (max-width:1180px){
  .rh__block{display:none}
  .sched__head,.sched__row{grid-template-columns:70px minmax(0,1fr) minmax(0,1.3fr)}
  .sched__head span:last-child{display:none}
  .sched__sw,.care{grid-column:2/-1;max-width:420px}
  .flow__wrap{grid-template-columns:1fr}
  .flow__line{grid-column:1}
  .flow__chain{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:20px}
  .flow__chain li:nth-child(3)::after{display:none}
}
/* deck mode for the architecture index: narrow screens and short screens */
@media (max-width:900px),(max-height:620px){
  .arch__grid{display:block;padding:0}
  .arch__board{display:none}
  .arch__nums{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:0 var(--gut) 14px}
  .arch__nums::-webkit-scrollbar{display:none}
  .arch__nums button{flex:none;width:44px;height:44px;border:1px solid var(--line);border-radius:4px;font-family:var(--f-mono);font-size:12px;color:var(--fg-2);transition:background .3s,color .3s,border-color .3s}
  .arch__nums button[aria-selected="true"]{background:var(--sky);color:var(--ink);border-color:var(--sky)}
  .arch__reg{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:0 var(--gut) 10px;scrollbar-width:none;overscroll-behavior-x:contain}
  .arch__reg::-webkit-scrollbar{display:none}
  .reg{flex:none;width:min(84vw,440px);min-height:0;opacity:1;scroll-snap-align:center;padding:12px;border:1px solid var(--line);border-radius:10px;background:rgba(7,16,33,.55);align-content:start}
  .reg:last-child{border-bottom:1px solid var(--line)}
  .reg::before{display:none}
  .js .reg__fig{display:block}
  .js .reg__legend{position:static;width:auto;height:auto;overflow:visible;clip:auto;white-space:normal;display:flex;flex-wrap:wrap;gap:4px 12px}
  .reg__legend li{font-size:13px;gap:6px}
  .reg__legend li span{display:none}
  .reg__legend li::before{content:attr(data-n);font-family:var(--f-mono);font-size:11px;color:var(--sky);padding-top:2px}
  .reg__legend li.is-hot b{color:var(--sky)}
  .reg__h{font-size:clamp(32px,9vw,44px)}
  .reg__spec{font-size:15.5px}
  .reg__body{padding:4px 4px 6px}
}
@media (max-height:620px) and (min-width:560px){
  .reg{width:min(86vw,700px);grid-template-columns:minmax(0,230px) 1fr;gap:16px}
  .reg__fig{align-self:start}
}
@media (max-width:900px){
  :root{--gut:16px}
  .dhud{left:12px;bottom:12px;height:44px;padding:0 6px 0 12px;gap:8px}
  .dhud__lbl,.dhud__sep{display:none}
  .spec-pill{right:12px;bottom:12px;height:44px}
  /* cover sheet: stacked */
  .rh{height:auto;min-height:0;display:flex;flex-direction:column;padding-top:var(--hdr)}
  .rh__stage{position:relative;inset:auto;height:min(108vw,58svh);flex:none;order:0}
  .rh__frame{top:0;height:100%;width:auto;transform:translateX(calc(-1 * var(--fx)))}
  .rh__stage::after{background:linear-gradient(0deg,rgba(246,248,251,1),rgba(246,248,251,0) 22%)}
  .rh__marks{display:none}
  .rh__copy{position:relative;inset:auto;width:auto;padding:0 var(--gut) 28px;margin-top:-28px;gap:16px}
  .rh__title{font-size:clamp(44px,12.4vw,72px)}
  .rh__lede{font-size:15.5px}
  .rh__ctas{display:grid;grid-template-columns:1fr;width:100%}
  .rh__ctas .btn{justify-content:space-between}
  .rh__tl{position:relative;grid-template-columns:repeat(3,1fr)}
  .rh__tl a{min-height:52px;padding:0 12px;font-size:14px;gap:8px;border-bottom:1px solid rgba(10,17,32,.1)}
  .rh__call::before{width:28px}
  .rh__call--r{flex-direction:row-reverse;transform:translate(calc(-100% + 22px),-50%)}
  .rh__call--r::before{transform-origin:right}
  .rh__call--r span{order:-1}
  .stamp--hero{position:absolute;z-index:5;right:var(--gut);top:-104px;margin:0;background:rgba(246,248,251,.86)}
  .rh__call span{padding:0 10px}
  .spec__grid,.ident__grid,.measure__grid,.rfi__grid,.rbrief__grid,.refcard{grid-template-columns:1fr}
  .spec__side,.rfi__head,.rbrief__right{position:relative;top:0}
  .env__grid{grid-template-columns:1fr}
  .zone{border-right:0;border-bottom:1px solid var(--line)}
  .zone:last-child{border-bottom:0}
  .zone h3{margin-top:24px}
  .sched__head{display:none}
  .sched__row{grid-template-columns:1fr;gap:10px}
  .sched__sw,.care{grid-column:1;max-width:none}
  .place{order:-1}
  .mfig{max-width:440px}
  .flow__chain{grid-template-columns:1fr;gap:12px;padding-left:28px}
  .flow__chain li{min-height:0;grid-template-columns:64px 1fr;align-items:center}
  .flow__chain li::after{display:none}
  .flow__line{position:absolute;left:var(--gut);top:0;bottom:0;width:2px;height:auto;margin:0}
  .flow__line i{transform-origin:top;transform:scaleY(0)}
  .flow__wrap{padding-left:calc(var(--gut) + 0px)}
  .refcard__fields{grid-template-columns:1fr 1fr}
  .rfi summary{grid-template-columns:50px 1fr 40px;gap:10px;font-size:21px}
  .rfi__body{padding:0 0 22px 60px}
  .transmittal{transform:none}
  .rstrip{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}
  .rstrip::-webkit-scrollbar{display:none}
  .rstrip__card{flex:none;width:min(70vw,300px);scroll-snap-align:start}
  .rstrip__card--lead{aspect-ratio:4/5;width:min(80vw,340px)}
  .next-step{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .ssheet__top .mono,.ssheet__foot,.care__n,.mfig figcaption,.refcard__fields dt,.stamp span:last-child,.transmittal__top .mono,.transmittal__to,.transmittal__dl dt,.transmittal__purpose,.tblock dt,.rstrip__t em,.blabel .mono,.reg__cap b{font-size:12px}
  .rbrief .fine a,.consent a{display:inline-flex;align-items:center;min-height:44px}
  .rh__call::before{display:none}
  .rh__call span{font-size:0;padding:0 8px;min-width:40px;justify-content:center}
  .rh__call span b{font-size:12px;font-weight:700}
  .stamp span:first-child{font-size:24px}
  .ssheet{padding:20px 18px 18px}
  .refcard__fields{grid-template-columns:1fr}
  .rfi__body{padding-left:0}
  .rclose__title{font-size:clamp(52px,15vw,90px)}
  .rclose__ctas .btn--xl{font-size:16px;min-height:62px;padding:0 18px 0 22px;white-space:normal;text-align:left}
  .qrow{grid-template-columns:48px 1fr 28px;font-size:15px}
  .transmittal__stamp{position:static;justify-self:start}
}
/* short landscape phones: cover sheet keeps the side-by-side composition but without pins or overflow */
@media (max-height:520px) and (min-width:560px){
  .rh{height:auto;min-height:100svh;display:block;padding-top:0}
  .rh__stage{position:absolute;inset:0;height:auto}
  .rh__frame{top:50%;width:max(100%,150svh);height:auto;transform:translate(-50%,-50%);left:50%}
  .rh__stage::after{background:linear-gradient(90deg,rgba(246,248,251,.95) 0,rgba(246,248,251,.7) 40%,rgba(246,248,251,0) 62%)}
  .rh__copy{position:relative;width:min(52vw,520px);padding:calc(var(--hdr) + 14px) 0 24px var(--gut);margin:0;gap:12px}
  .rh__title{font-size:clamp(34px,7.4vh,46px)}
  .rh__lede{font-size:14.5px}
  .rh__ctas{display:flex}
  .rh__tl{position:relative}
  .stamp span:first-child{font-size:20px}
  .stamp--hero{position:static;margin:2px 0 0 4px;background:none}
}
@media (prefers-reduced-motion:reduce){.bdot::after{animation:none;display:none}}
html.motion-off .bdot::after{display:none}
.rh__xy{position:absolute;left:0;top:0;z-index:6;margin:0;pointer-events:none;color:var(--steel);font-size:11px;white-space:nowrap}
.refcard__open{display:grid;gap:14px;align-content:start}
.refcard__until{margin:0;color:var(--fg-2);font-size:12px}
.rh__call span{gap:.6ch}
@media (min-width:901px) and (min-height:621px){.arch__reg{padding-bottom:22vh}}