.pt-photo-bar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}.pt-photo-bar h2{margin:0;font-size:27px}.pt-photo-bar p{margin:4px 0;color:var(--muted)}.pt-photo-bar-actions{display:flex;align-items:center;gap:18px}.pt-photo-brand{font-size:14px;color:var(--navy);font-weight:700}
.pt-photo-modes{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding-bottom:17px;border-bottom:1px solid var(--line)}.pt-photo-profile{margin-left:auto;font-size:13px;color:var(--muted)}.pt-app .pt-photo-modes [aria-pressed=true],.pt-app .pt-photo-zoom [aria-pressed=true],.pt-app .pt-form-model-toggle [aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
.pt-photo-controls{display:flex;gap:14px;align-items:end;flex-wrap:wrap;padding:16px 0 8px}.pt-photo-controls label{display:grid;gap:5px;font-size:13px;flex:1 1 150px}.pt-photo-controls input,.pt-photo-controls select{width:100%;min-width:0;min-height:44px;box-sizing:border-box}.pt-photo-zoom{display:flex;gap:4px;flex:0 1 auto}.pt-photo-controls button{font-size:12px;padding:9px 11px;min-height:44px}.pt-photo-results{background:var(--wash);border:1px solid var(--line);padding:12px;margin:8px 0;display:flex;flex-wrap:wrap;gap:8px}.pt-photo-results[hidden]{display:none}
.pt-photo-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:22px}.pt-photo-layout.has-detail{grid-template-columns:minmax(0,1fr) 308px}.pt-photo-table-side{min-width:0}.pt-photo-instructions{font-size:12px;color:var(--muted);margin:8px 0 9px}.pt-photo-scroll{width:100%;overflow:auto;overscroll-behavior:contain;padding:3px;box-sizing:border-box;border-radius:8px;background:#f2f6f6;scrollbar-color:#819ba6 #edf2f3;scrollbar-width:thin}.pt-photo-grid{display:grid;grid-template-columns:repeat(18,minmax(0,1fr));grid-template-rows:19px repeat(7,minmax(0,1fr)) 13px repeat(2,minmax(0,1fr));gap:4px;aspect-ratio:18/9.7;width:100%;position:relative}.pt-photo-grid[data-size=read]{min-width:1150px}.pt-photo-grid[data-size=large]{min-width:1640px}
.pt-app .pt-photo-tile{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;min-width:0;min-height:0;padding:4px 5px 5px;overflow:hidden;border:0;border-bottom:4px solid var(--family);border-radius:4px;background:#1b3949;isolation:isolate;text-align:left;color:white;box-shadow:0 1px 3px #1233;aspect-ratio:1/1}.pt-photo-tile:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#00182455 0%,#00182408 20%,#0018244d 48%,#001824ed 100%)}.pt-photo-tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .2s}.pt-app .pt-photo-tile:hover{color:#fff;background:#183c4e;box-shadow:0 0 0 2px var(--teal);z-index:2}.pt-photo-tile:hover img{transform:scale(1.05)}.pt-app .pt-photo-tile[aria-pressed=true]{box-shadow:0 0 0 3px var(--copper);z-index:2}.pt-photo-tile.is-muted{opacity:.35}.pt-photo-number{position:absolute;top:2px;left:5px;font-size:10px;text-shadow:0 1px 3px #000;font-weight:700}.pt-photo-symbol{font-size:clamp(15px,1.8vw,29px);line-height:1.1;text-shadow:0 1px 4px #000}.pt-photo-name{font-size:clamp(6px,.59vw,10px);white-space:nowrap;line-height:1.5;max-width:100%;text-overflow:ellipsis;overflow:hidden;text-shadow:0 1px 2px #000}.pt-photo-form-dot{position:absolute;top:3px;right:5px;color:#fff1b1;font-size:9px;text-shadow:0 1px 3px #000}.pt-photo-tile.is-reference{background:linear-gradient(145deg,#284e61,#142f40)}.pt-photo-tile.is-reference:after{background:repeating-linear-gradient(135deg,transparent,transparent 7px,#ffffff03 7px,#ffffff03 8px)}.pt-photo-group{font-size:11px;text-align:center;color:#45606e}.pt-photo-series{display:grid;place-content:center;text-align:center;border:1px solid #b8cbd0;border-radius:5px;background:#e6eff0;font-size:11px;line-height:1.3;color:#254759}.pt-photo-series-label{font-size:11px;align-self:center;text-align:right;padding-right:12px;color:#526b76;line-height:1.4}
.pt-photo-gap{grid-column:4 / 13;grid-row:2 / 4;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:2% 5%;border-left:3px solid #a8654955;margin:6px 8px 8px 15px;gap:6px}.pt-photo-gap p{font-size:clamp(14px,1.7vw,24px);font-weight:650;line-height:1.3;color:var(--navy);margin:0}.pt-photo-gap button{min-height:32px;padding:3px 8px;font-size:11px}.pt-photo-gap>span{font-size:9px;line-height:1.4;color:#526a75}
.pt-photo-foot{display:flex;gap:16px;flex-wrap:wrap;align-items:center;padding:12px 0;font-size:12px;color:var(--muted)}.pt-photo-foot button{font-size:12px;min-height:40px;margin-left:auto}.pt-photo-legend{font-size:12px;color:var(--muted)}.pt-photo-legend summary{cursor:pointer;padding:8px 0}.pt-photo-legend>div{display:flex;gap:12px;flex-wrap:wrap;padding:8px 0}.pt-photo-legend i{display:inline-block;width:12px;height:12px;border-radius:2px;margin-right:6px}.pt-photo-image-note{width:100%;padding:16px;border:1px solid var(--line);background:#edf5f5;box-sizing:border-box}
.pt-photo-inspector{border:1px solid var(--line);border-radius:10px;background:#f3f7f8;align-self:start;overflow:hidden}.pt-photo-inspector-head{display:flex;gap:12px;justify-content:space-between;align-items:center;padding:15px}.pt-photo-inspector h3{margin:0;font-size:21px}.pt-photo-inspector-head p{font-size:11px;margin:3px 0}.pt-photo-inspector-head button{font-size:23px;min-width:44px;min-height:44px;padding:0}.pt-photo-specimen img{width:100%;height:auto;max-height:290px;object-fit:contain;display:block;background:#f4f1ec}.pt-photo-inspector-copy{padding:15px;font-size:13px;line-height:1.6}.pt-photo-inspector-copy>p:first-child{font-weight:700;margin-top:0}.pt-photo-inspector-copy button,.pt-photo-inspector-copy>a{display:block;width:100%;margin-top:9px;text-align:left;box-sizing:border-box;min-height:44px}.pt-photo-inspector-copy dl{border-top:1px solid var(--line);padding-top:10px}.pt-photo-inspector-copy dl>div{display:flex;justify-content:space-between;gap:12px;font-size:12px}.pt-photo-inspector-copy dd{margin:0;text-align:right}.pt-photo-absent{padding:30px;text-align:center}.pt-photo-absent strong{font-size:70px;color:var(--navy)}
.pt-app .pt-photo-screen{position:fixed;inset:0;width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;border:0;padding:18px 26px;box-sizing:border-box;background:#f8fbfa;color:var(--ink);overflow:auto}.pt-photo-screen::backdrop{background:#143b4fbb}.pt-photo-screen .pt-photo-bar{position:sticky;top:-18px;background:#f8fbfaf5;z-index:10;padding:10px 0;border-bottom:1px solid #d0dfe1;margin-bottom:14px}.pt-photo-screen .pt-photo-grid[data-size=fit]{max-width:calc((100dvh - 390px)*1.856);margin-inline:auto}.pt-photo-screen .pt-photo-scroll{max-height:calc(100dvh - 230px)}.pt-photo-screen .pt-photo-inspector{max-height:calc(100dvh - 225px);overflow:auto;position:sticky;top:90px}
.pt-allotrope-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.pt-app .pt-allotrope-tabs button{display:flex;gap:10px;align-items:center;min-height:52px;flex:1;justify-content:center;background:#f2f7f7}.pt-allotrope-tabs strong{font-size:23px}.pt-app .pt-allotrope-tabs [aria-pressed=true]{background:#e5f3f4;border-color:var(--teal);box-shadow:inset 0 -3px var(--teal)}.pt-allotrope-intro{display:flex;justify-content:space-between;gap:24px;align-items:start}.pt-allotrope-intro h3{font-size:25px;margin:0 0 8px}.pt-allotrope-intro p{margin:0;max-width:780px;font-size:14px}.pt-form-model-toggle{display:flex;gap:5px;flex-shrink:0}.pt-photo-model-note{font-size:12px;color:var(--muted);margin:13px 0 18px}.pt-allotrope-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px}.pt-form-card{border:1px solid var(--line);border-radius:12px;background:white;overflow:hidden;box-shadow:0 4px 18px #143b4f08}.pt-form-card>label{display:flex;gap:14px;align-items:center;padding:13px 18px;font-size:13px;background:#f0f6f7;font-weight:600}.pt-form-card select{flex:1;min-width:0;width:100%;min-height:44px;font-size:14px}.pt-form-image{position:relative;background:#f3f0eb}.pt-form-image img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:contain}.pt-form-image>span{position:absolute;bottom:10px;left:12px;border-radius:20px;background:#ffffffe8;padding:3px 12px;font-size:11px;color:#1c4658}.pt-form-copy{padding:20px 24px;font-size:14px;line-height:1.65}.pt-form-copy h3{font-size:23px;margin:0 0 12px}.pt-form-copy h4{font-size:14px;margin:19px 0 5px}.pt-form-copy p{margin:5px 0 13px}.pt-form-copy ul{padding-left:20px;margin:5px 0}.pt-form-copy li{margin-bottom:8px}.pt-form-copy .pt-scope-line{font-size:11px;color:#5e6e76;margin-bottom:7px}
.pt-allotrope-question{border:1px solid #bbd5d9;border-left:4px solid var(--teal);background:#edf6f6;border-radius:8px;padding:24px;margin:24px 0;font-size:14px}.pt-allotrope-question h3{margin:0 0 9px;font-size:21px}.pt-allotrope-question>p{margin:9px 0}.pt-allotrope-reference{margin-top:18px;border-top:1px solid #bad2d5;padding-top:6px}.pt-photo-next{display:flex;align-items:center;gap:14px 22px;flex-wrap:wrap;margin:23px 0;font-size:14px}.pt-allotrope-sources{font-size:12px;padding:15px 0;border-top:1px solid var(--line)}.pt-allotrope-sources summary{font-size:14px;cursor:pointer}.pt-photo-credit{font-size:12px;color:var(--muted);text-align:right}
@media(min-width:1600px){.pt-photo-tile .pt-photo-symbol{font-size:31px}.pt-photo-name{font-size:10px}}
@media(max-width:1000px){.pt-photo-layout.has-detail{grid-template-columns:minmax(0,1fr) 260px}.pt-photo-controls{gap:9px}.pt-photo-profile{width:100%;margin:3px 0 0}.pt-allotrope-tabs button{font-size:12px}.pt-allotrope-intro{flex-wrap:wrap}.pt-photo-screen .pt-photo-grid[data-size=fit]{max-width:none}}
@media(max-width:720px){.pt-photo-bar{gap:9px;align-items:start}.pt-photo-bar h2{font-size:21px;line-height:1.3}.pt-photo-bar p{font-size:12px}.pt-photo-bar-actions{flex-shrink:0}.pt-photo-bar-actions button{font-size:12px;padding:8px}.pt-photo-brand{display:none}.pt-photo-modes{gap:6px}.pt-photo-modes button{font-size:12px;padding:8px;min-height:44px}.pt-photo-controls{gap:10px}.pt-photo-controls label{flex:1 1 calc(50% - 10px);font-size:12px}.pt-photo-controls label:first-child{flex-basis:100%}.pt-photo-controls input,.pt-photo-controls select{font-size:16px;max-width:100%}.pt-photo-controls .pt-photo-zoom{flex-basis:100%}.pt-photo-zoom button{flex:1;min-height:44px}.pt-photo-layout.has-detail{grid-template-columns:minmax(0,1fr)}.pt-photo-grid[data-size=read] .pt-photo-symbol,.pt-photo-grid[data-size=large] .pt-photo-symbol{font-size:25px}.pt-photo-grid[data-size=read] .pt-photo-name,.pt-photo-grid[data-size=large] .pt-photo-name{font-size:8px}.pt-photo-grid[data-size=fit]{gap:1px;grid-template-rows:15px repeat(7,minmax(0,1fr)) 4px repeat(2,minmax(0,1fr))}.pt-photo-grid[data-size=fit] .pt-photo-tile{border-bottom-width:2px;border-radius:1px;padding:1px;pointer-events:none}.pt-photo-grid[data-size=fit] .pt-photo-number,.pt-photo-grid[data-size=fit] .pt-photo-name,.pt-photo-grid[data-size=fit] .pt-photo-form-dot{display:none}.pt-photo-grid[data-size=fit] .pt-photo-symbol{font-size:7px}.pt-photo-grid[data-size=fit] .pt-photo-group{font-size:7px}.pt-photo-grid[data-size=fit] .pt-photo-gap{margin:0;padding:0 5px;border:0}.pt-photo-grid[data-size=fit] .pt-photo-gap p{font-size:8px}.pt-photo-grid[data-size=fit] .pt-photo-gap button,.pt-photo-grid[data-size=fit] .pt-photo-gap>span{display:none}.pt-photo-grid[data-size=fit] .pt-photo-series,.pt-photo-grid[data-size=fit] .pt-photo-series-label{font-size:5px;padding:0}.pt-photo-gap p{font-size:21px}.pt-photo-gap>span{font-size:10px}.pt-photo-gap button{min-height:44px;font-size:12px}.pt-photo-foot{gap:8px;font-size:11px}.pt-photo-foot button{margin-left:0;min-height:44px}.pt-photo-screen{padding:12px!important}.pt-photo-screen .pt-photo-bar{top:-12px;padding-top:7px}.pt-photo-screen .pt-photo-scroll{max-height:calc(100dvh - 370px)}.pt-photo-screen .pt-photo-inspector{position:fixed;inset:auto 7px 7px;max-height:72dvh;z-index:15;box-shadow:0 -9px 45px #1238;border:2px solid #8da8b0}.pt-photo-screen .pt-photo-inspector-head{position:sticky;top:0;background:#f3f7f8;z-index:1;padding:10px 13px}.pt-photo-screen .pt-photo-specimen img{max-height:220px}.pt-allotrope-tabs{gap:7px;margin:17px 0}.pt-app .pt-allotrope-tabs button{flex:1 1 28%;padding:7px;min-height:51px;font-size:11px;gap:7px}.pt-allotrope-tabs strong{font-size:20px}.pt-allotrope-intro h3{font-size:23px}.pt-allotrope-pair{gap:16px;grid-template-columns:minmax(0,1fr)}.pt-form-card>label{padding:10px 14px}.pt-form-card select{font-size:16px}.pt-form-copy{padding:18px}.pt-form-copy h3{font-size:22px}.pt-allotrope-question{padding:18px}.pt-photo-next{display:grid;gap:14px}.pt-photo-next a{padding:6px 0}.pt-photo-credit{text-align:left}.pt-photo-screen .pt-photo-controls{margin:0}.pt-photo-screen .pt-allotrope-pair{padding-bottom:6px}}
@media(prefers-reduced-motion:reduce){.pt-photo-tile img{transition:none}}
@media print{.pt-photo-screen{display:none!important}#pt-sheet .pt-allotrope-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}#pt-sheet .pt-allotrope-pair img{width:100%;height:auto;max-height:220px;object-fit:contain}#pt-sheet .pt-answer-space{height:150px;border-bottom:1px solid #999}#pt-sheet article{break-inside:avoid}#pt-sheet h2{font-size:17px}}

.pt-photo-grid[data-labels=number] .pt-photo-name,.pt-photo-grid[data-labels=symbol] .pt-photo-name,.pt-photo-grid[data-labels=symbol] .pt-photo-number,.pt-photo-grid[data-labels=none] .pt-photo-name,.pt-photo-grid[data-labels=none] .pt-photo-symbol,.pt-photo-grid[data-labels=none] .pt-photo-number,.pt-photo-grid[data-labels=none] .pt-photo-form-dot,.pt-photo-grid[data-labels=none] .pt-photo-group,.pt-photo-grid[data-labels=none] .pt-photo-gap,.pt-photo-grid[data-labels=none] .pt-photo-series,.pt-photo-grid[data-labels=none] .pt-photo-series-label{visibility:hidden}
.pt-photo-grid[data-labels=none] .pt-photo-tile:after{background:none}.pt-photo-grid[data-labels=none] .pt-photo-tile{border-bottom-width:0}.pt-photo-grid[data-labels=none] .pt-photo-tile.is-reference{background:#e1eaec}.pt-photo-display-tools{position:fixed;right:27px;bottom:16px;z-index:25;display:flex;gap:6px}.pt-photo-display-tools button{background:#fffffff0!important;box-shadow:0 2px 12px #1233;min-height:44px;min-width:44px}.pt-photo-screen.is-immersive .pt-photo-bar,.pt-photo-screen.is-immersive .pt-photo-modes,.pt-photo-screen.is-immersive .pt-photo-controls,.pt-photo-screen.is-immersive .pt-photo-instructions,.pt-photo-screen.is-immersive .pt-photo-foot,.pt-photo-screen.is-immersive .pt-photo-legend{display:none}.pt-photo-screen.is-immersive .pt-photo-grid[data-size=fit]{max-width:calc((100dvh - 46px)*1.856)}.pt-photo-screen.is-immersive .pt-photo-scroll{max-height:calc(100dvh - 38px)}.pt-photo-screen.is-immersive .pt-photo-inspector{top:0}.pt-photo-screen.is-immersive .pt-photo-layout{min-height:calc(100dvh - 40px);align-content:center}
@media(max-width:720px){.pt-photo-display-tools{right:18px;bottom:14px}.pt-photo-screen.is-immersive .pt-photo-layout{align-content:start}.pt-photo-screen.is-immersive .pt-photo-scroll{max-height:calc(100dvh - 28px)}}

.pt-form-mobile-overview{display:none}.pt-form-card>label{flex-direction:row}
@media(max-width:720px){.pt-form-mobile-overview{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px;margin:12px 0 20px}.pt-form-mobile-overview>div{border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden}.pt-form-mobile-overview label{display:grid;gap:5px;padding:10px 7px;font-size:11px}.pt-form-mobile-overview select{width:100%;min-height:44px;min-width:0;font-size:16px;box-sizing:border-box}.pt-form-mobile-overview p{font-size:12px;font-weight:700;color:var(--navy);padding:8px;margin:0}.pt-form-mobile-overview+.pt-allotrope-pair .pt-form-card>label,.pt-form-mobile-overview+.pt-allotrope-pair .pt-form-image{display:none}}

.pt-photo-advanced{display:none}
@media(max-width:720px){.pt-photo-screen .pt-photo-advanced{display:block;min-height:44px;flex-basis:100%}.pt-photo-screen:not(.is-advanced) [data-photo-search-label],.pt-photo-screen:not(.is-advanced) [data-photo-highlight-label]{display:none}.pt-photo-screen .pt-photo-controls label{min-width:0}.pt-photo-screen .pt-photo-controls{padding-top:10px}.pt-photo-screen .pt-photo-bar h2{font-size:20px}.pt-photo-screen .pt-photo-profile{font-size:11px}.pt-photo-screen .pt-photo-modes{padding-bottom:10px}.pt-photo-screen .pt-photo-scroll{max-height:calc(100dvh - 400px)}.pt-photo-screen.is-immersive .pt-photo-advanced{display:none}}

.pt-app .pt-form-image>button{position:relative;display:block;padding:0;border:0;border-radius:0;min-height:0;width:100%;line-height:0;background:transparent}.pt-form-image>button .pt-photo-enlarge-mark{position:absolute;right:10px;bottom:9px;background:#fffffff0;border:1px solid #c8d8dc;border-radius:7px;display:grid;place-content:center;width:35px;height:35px;font-size:21px;line-height:1;color:var(--navy)}.pt-photo-lightbox{display:flex;justify-content:center;align-items:center;min-height:40dvh;background:#eef3f3;border-radius:12px}.pt-photo-lightbox img{max-width:100%;width:auto;height:auto;max-height:calc(100dvh - 190px);object-fit:contain}.pt-photo-lightbox-note{font-size:14px;max-width:1000px;margin:18px auto}.pt-photo-screen .pt-photo-lightbox+ p+button{min-height:44px}
@media(max-width:720px){.pt-form-image>button .pt-photo-enlarge-mark{width:29px;height:29px;right:5px;bottom:5px;font-size:18px}.pt-photo-lightbox img{max-height:65dvh;width:100%;height:auto}.pt-photo-lightbox-note{font-size:13px}}

.pt-photo-lightbox img[src*="-structure.svg"]{width:min(100%,1100px)}

.pt-photo-screen .pt-photo-grid[data-size=fit]{max-width:max(500px,calc((100dvh - 390px)*1.856))}.pt-photo-screen.is-immersive .pt-photo-grid[data-size=fit]{max-width:calc((100dvh - 46px)*1.856)}
@media(min-width:721px) and (max-width:900px) and (max-height:500px){.pt-photo-grid[data-size=fit] .pt-photo-tile{pointer-events:none}.pt-photo-screen .pt-photo-grid[data-size=fit]{max-width:100%}}
.pt-photo-grid[data-size=read] .pt-photo-symbol{font-size:25px}.pt-photo-grid[data-size=large] .pt-photo-symbol{font-size:31px}@media(max-width:1000px){.pt-photo-grid[data-size=fit] .pt-photo-tile{pointer-events:none}}

@media print{#pt-photos-view .pt-photo-controls,#pt-photos-view .pt-photo-results,#pt-photos-view .pt-photo-modes,#pt-photos-view .pt-photo-bar-actions,#pt-photos-view .pt-photo-instructions,#pt-photos-view .pt-photo-foot button,#pt-photos-view .pt-photo-legend,#pt-photos-view .pt-photo-inspector{display:none!important}#pt-photos-view .pt-photo-layout{display:block}#pt-photos-view .pt-photo-scroll{overflow:visible;background:#fff}#pt-photos-view .pt-photo-grid[data-size]{min-width:0!important;width:100%;max-width:none}#pt-photos-view .pt-photo-gap>button{display:none}#pt-photos-view .pt-photo-gap p{font-size:12px}}

.pt-context-enlarge{position:relative;display:block;width:100%;padding:0!important;border:0!important;line-height:0;background:transparent!important}.pt-context-enlarge>span{position:absolute;right:10px;bottom:10px;display:grid;place-items:center;width:36px;height:36px;font-size:24px;line-height:1;background:#fffffff0;color:var(--navy);border:1px solid var(--line);border-radius:8px}.pt-photo-inspector-copy h4{font-size:19px;line-height:1.3;margin:8px 0 13px}.pt-photo-inspector-copy .pt-context-kind{font-size:12px;color:var(--muted)}.pt-context-subject,.pt-context-sources{margin:14px 0;font-size:13px}.pt-context-subject summary,.pt-context-sources summary{cursor:pointer;min-height:36px;display:list-item;line-height:1.5;padding:4px 0}.pt-context-sources ul{padding-left:18px}.pt-context-sources a{overflow-wrap:anywhere}.pt-photo-lightbox-note .pt-context-sources{max-width:75ch}

@media(max-width:720px){.pt-context-subject summary,.pt-context-sources summary{min-height:44px}}

@media(max-width:720px){.pt-photo-screen:has(.pt-photo-inspector) .pt-photo-display-tools{display:none}}