/* Building security: the study drawing is the navigation. Each location opens
   the scope that applies there; the drawing focuses on the selected area. */
.res-chapters--three>.wrap{grid-template-columns:repeat(3,minmax(0,1fr))}
/* The introduction reads as one block: the lede sits under its heading. */
.bintro{max-width:820px}
.bintro .eyebrow{margin:0}
.bintro h2{margin-top:14px}
.bintro .lede{margin:22px 0 0;max-width:38em;color:#c3cad3}

.bmodel{display:grid;grid-template-columns:minmax(0,1.42fr) minmax(0,1fr);gap:clamp(40px,4.6vw,96px);align-items:start;margin-top:clamp(40px,5svh,64px)}
.bmodel__figure{margin:0;min-width:0;background:#222934;border:1px solid #424b58;padding:24px 26px 20px;position:sticky;top:calc(var(--reading-header-height,var(--nav-height,82px)) + var(--reading-rail-height,0px) + 24px)}
.bmodel__drawing{position:relative;overflow:hidden;border-radius:var(--media-radius,12px);background-image:linear-gradient(rgba(166,180,194,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(166,180,194,.08) 1px,transparent 1px);background-size:32px 32px}
.bmodel__layer{position:relative}
.bmodel__layer>img{display:block;width:100%;height:auto;aspect-ratio:1300/979;filter:none!important;border-radius:0!important}
.bmodel__figure figcaption{font-size:11px;line-height:1.8;color:#a5aeb9;margin-top:18px}


/* Highlighted areas */
.bmodel__regions{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.bmodel__region{fill:var(--gold);fill-opacity:0;stroke:var(--gold);stroke-opacity:0;stroke-width:2;stroke-linejoin:round;vector-effect:non-scaling-stroke;transition:fill-opacity .35s ease,stroke-opacity .35s ease}
.bmodel[data-zone="perimeter"] [data-region="perimeter"],.bmodel[data-zone="lobby"] [data-region="lobby"],.bmodel[data-zone="podium"] [data-region="podium"],.bmodel[data-zone="floors"] [data-region="floors"],.bmodel[data-zone="control"] [data-region="control"]{fill-opacity:.2;stroke-opacity:1;stroke-dasharray:8 5}
.bmodel:has(.bmodel__pin[data-zone="perimeter"]:hover) [data-region="perimeter"],.bmodel:has(.bmodel__pin[data-zone="lobby"]:hover) [data-region="lobby"],.bmodel:has(.bmodel__pin[data-zone="podium"]:hover) [data-region="podium"],.bmodel:has(.bmodel__pin[data-zone="floors"]:hover) [data-region="floors"],.bmodel:has(.bmodel__pin[data-zone="control"]:hover) [data-region="control"]{fill-opacity:.1;stroke-opacity:.6}

/* Location pins: the numbered square sits on the location. */
.bmodel__pins{position:absolute;inset:0;pointer-events:none;display:block;border:0;margin:0;padding:0;overflow:visible}
.bmodel .bmodel__pin{position:absolute;left:var(--x);top:var(--y);transform:translate(-14px,-50%);pointer-events:auto;display:flex;align-items:center;gap:0;flex:none;appearance:none;background:none;border:0;border-radius:0;padding:0;margin:0;color:#eef0ec;font-size:12px;line-height:1.4;white-space:nowrap;cursor:pointer;opacity:.9;transition:opacity .2s ease}
.bmodel__pin[data-zone="perimeter"]{--x:12%;--y:90%}
.bmodel__pin[data-zone="lobby"]{--x:48%;--y:86%}
.bmodel__pin[data-zone="podium"]{--x:30%;--y:66%}
.bmodel__pin[data-zone="floors"]{--x:66%;--y:30%}
.bmodel__pin[data-zone="control"]{--x:82%;--y:81%}
.bmodel .bmodel__pin--left{flex-direction:row-reverse;transform:translate(calc(-100% + 14px),-50%)}
.bmodel__pin b{position:relative;display:grid;place-items:center;width:28px;height:28px;flex:none;font:500 11px/1 var(--mono,monospace);background:#151922f0;color:var(--gold);border:1px solid color-mix(in srgb,var(--gold) 70%,transparent)}
.bmodel__pin-label{display:block;background:#151922e8;border:1px solid #5a626b;border-left:0;padding:4px 10px;transition:border-color .2s ease,color .2s ease}
.bmodel__pin--left .bmodel__pin-label{border-left:1px solid #5a626b;border-right:0}
.bmodel .bmodel__pin:hover,.bmodel .bmodel__pin[aria-selected="true"]{opacity:1}
.bmodel__pin[aria-selected="true"] b{background:var(--gold);color:#151922;border-color:var(--gold)}
.bmodel__pin[aria-selected="true"] .bmodel__pin-label{border-color:var(--gold);color:#fff}
.bmodel__pin[aria-selected="true"] b:after{content:"";position:absolute;inset:-6px;border:1px solid var(--gold);animation:bmodel-halo 2.4s ease-out infinite}
@keyframes bmodel-halo{0%{opacity:.9;transform:scale(.8)}80%,100%{opacity:0;transform:scale(1.5)}}
.bmodel__pin:focus-visible{outline:2px solid var(--gold);outline-offset:4px}

/* Scope for the selected location */
.bmodel__info{min-width:0}
.bmodel__bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid #434c58}
.bmodel__count{font:500 13px/1 var(--mono,monospace);color:#a5aeb9;letter-spacing:.06em}.bmodel__current{color:var(--gold)}
.bmodel__step{display:flex;gap:8px}
.bmodel__step button{width:42px;height:42px;display:grid;place-items:center;appearance:none;background:transparent;border:1px solid #ffffff38;border-radius:50%;color:#eef0ec;font-size:16px;cursor:pointer;transition:border-color .2s ease,color .2s ease}
.bmodel__step button:hover{border-color:var(--gold);color:var(--gold)}
.bmodel__step button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
/* Every location shares one cell, so the column keeps the height of the
   fullest location and nothing below it moves when the selection changes. */
.bmodel__panels{display:grid}
.bmodel__panel{grid-area:1/1;padding-top:28px;outline:none;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility 0s linear .3s}
.bmodel__panel.is-active{opacity:1;visibility:visible;transition:opacity .35s ease .08s,visibility 0s}
.bmodel__panel:focus-visible{outline:2px solid var(--gold);outline-offset:6px}
.bmodel .bmodel__kicker{margin:0 0 10px;font-size:12px;line-height:1.6;color:var(--gold);letter-spacing:.08em}
.bmodel .bmodel__panel h3{margin:0;font-size:clamp(28px,2.1vw,40px);line-height:1.3;color:#eef0ec}
.bmodel .bmodel__lead{margin:14px 0 0;font-size:clamp(15px,.95vw,18px);line-height:1.8;color:#c3cad3}
.bmodel__scope{list-style:none;margin:24px 0 0;padding:0}
.bmodel__scope li{display:grid;grid-template-columns:30px minmax(0,1fr);gap:16px;padding:20px 0;border-top:1px solid #434c58}
.bmodel__scope li:last-child{border-bottom:1px solid #434c58}
.bmodel__scope .ucs-icon{width:28px;height:28px;color:var(--gold);margin:2px 0 0}
.bmodel .bmodel__scope h4{margin:0 0 6px;font-size:18px;line-height:1.5;color:#eef0ec;font-weight:500}
.bmodel .bmodel__scope p{margin:0;font-size:14px;line-height:1.85;color:#aeb7c2}
.bmodel__scope .text-link{display:inline-block;margin-top:10px;font-size:13px}
.bmodel__inset{margin:22px 0 0;border-radius:8px;overflow:hidden}
.bmodel__inset img{display:block;width:100%;aspect-ratio:21/9;object-fit:cover;object-position:50% 45%}
.bmodel__inset--perimeter img{object-position:50% 64%}.bmodel__inset--lobby img{object-position:50% 56%}.bmodel__inset--podium img{object-position:50% 55%}.bmodel__inset--floors img{object-position:40% 45%}.bmodel__inset--control img{object-position:50% 42%}
.bmodel .bmodel__note{margin:20px 0 0;font-size:12px;line-height:1.8;color:#8f99a5}

/* Static variant: the original study drawing, with the eight areas of scope
   beside it and the three principles beneath it. */
.res-building-study.bstatic{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(40px,4.6vw,96px);align-items:start;margin-top:clamp(40px,5svh,64px)}
.bstatic__visual{min-width:0;position:sticky;top:calc(var(--reading-header-height,var(--nav-height,82px)) + var(--reading-rail-height,0px) + 24px)}
.bstatic__principles{list-style:none;margin:28px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.bstatic__principles li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px;padding-top:18px;border-top:1px solid #434c58;margin:0}
.bstatic__principles .res-principle-icon{grid-row:auto;padding-top:3px}.bstatic__principles .res-principle-icon .ucs-icon{width:24px;height:24px}
.bstatic .bstatic__principles h4{margin:0 0 4px;font-size:19px;line-height:1.4;color:#eef0ec}
.bstatic .bstatic__labels{margin:0 0 8px;font-size:12px;line-height:1.6;color:var(--gold)}
.bstatic .bstatic__principles p:not(.bstatic__labels){margin:0;font-size:13px;line-height:1.75;color:#aeb7c2}
.bstatic__scope{min-width:0}
.bstatic .bstatic__scope .eyebrow{margin:0}
.bstatic .bstatic__title{margin:12px 0 0;font-size:clamp(28px,2.2vw,40px);line-height:1.3;color:#eef0ec}
.bstatic .bstatic__lead{margin:14px 0 0;font-size:clamp(15px,.95vw,17px);line-height:1.85;color:#c3cad3}
.bstatic__list{margin-top:26px}
.bstatic .bstatic__list summary{min-height:70px}
.bstatic__inset{margin:2px 0 16px 45px;border-radius:8px;overflow:hidden}
.bstatic__inset img{display:block;width:100%;aspect-ratio:2/1;object-fit:cover;object-position:50% 45%}

/* Both variants keep the drawing and its scope side by side until phone width. */
@media (max-width:1100px){
  .bmodel{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:32px}
  .bmodel__figure{padding:18px 16px 16px}
  .bmodel__pin:not([aria-selected="true"]):not(:hover):not(:focus-visible) .bmodel__pin-label{display:none}
  .bmodel__pin b:before{content:"";position:absolute;inset:-8px}
  .bmodel .bmodel__panel h3{font-size:28px}
  .bmodel__scope li{grid-template-columns:26px minmax(0,1fr);gap:13px;padding:16px 0}
  .bmodel__scope .ucs-icon{width:24px;height:24px}
  .bmodel .bmodel__scope h4{font-size:17px}
  .bmodel .bmodel__scope p{font-size:13.5px;line-height:1.8}
  .bmodel__inset img{aspect-ratio:2/1}
  .res-building-study.bstatic{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px}
  .bstatic__visual{position:relative;top:auto}
  .bstatic__principles{grid-template-columns:1fr;gap:0}
  .bstatic__principles li{padding:16px 0}
}
@media (max-width:900px){
  .bmodel{gap:26px}
  .bmodel__figure{padding:14px 12px 12px}
  .bmodel__figure figcaption{font-size:10px;margin-top:12px}
  .bmodel__pin b{width:26px;height:26px}
  .bmodel .bmodel__pin{transform:translate(-13px,-50%)}
  .bmodel .bmodel__pin--left{transform:translate(calc(-100% + 13px),-50%)}
  .bmodel__pin-label{font-size:11px;padding:3px 8px}
  .bmodel__bar{padding-bottom:14px}
  .bmodel__step button{width:38px;height:38px}
  .bmodel__panel{padding-top:20px}
  .bmodel .bmodel__panel h3{font-size:25px}
  .bmodel .bmodel__lead{font-size:14.5px}
  .res-building-study.bstatic{gap:26px}
  .bstatic .bstatic__title{font-size:26px}
  .bstatic .bstatic__list summary{min-height:62px;font-size:15px;gap:12px}
  .bstatic__inset{margin-left:39px}
}
@media (max-width:760px){
  .bmodel,.res-building-study.bstatic{grid-template-columns:1fr;gap:28px}
  .bmodel__figure{position:relative;top:auto}
  .bmodel .bmodel__panel h3{font-size:27px}
  .bmodel .bmodel__scope h4{font-size:17px}
  .bmodel .bmodel__scope p{font-size:14px}
  .res-chapters--three>.wrap{grid-template-columns:repeat(3,minmax(0,1fr))}
  .res-chapters--three a:nth-child(-n+2){border-bottom:0}
}
@media (prefers-reduced-motion:reduce){
  .bmodel__region,.bmodel__pin,.bmodel__panel,.bmodel__panel.is-active{transition:none}
  .bmodel__pin[aria-selected="true"] b:after{animation:none}
}