/* Round 5. Existing fonts and colours, one sampled stage-ground token. */
.hook-stage,.hook-stage::before,.hook-mount,.hook-mount canvas,.hook-mount .object-still{background:var(--stage-ground)}
.section-five{min-width:0;scroll-margin-top:112px}
.section-five [hidden],.collection-piece[hidden],.phone-action[hidden],#site-chain[hidden]{display:none}
.section-five h2{font-family:var(--font-display)}
.section-five fieldset{min-width:0;border:0;padding:0;margin:0}
.section-five legend{text-transform:capitalize;font:500 14px/1.5 var(--font-body);margin-bottom:12px}
.line-band{width:100%;padding:80px max(16px,calc((100vw - 1800px)/2));margin-top:64px;background:var(--tint)}
.line-row{display:grid;grid-template-columns:minmax(0,1fr) 160px;gap:24px;align-items:center;max-width:1600px;margin:auto}
.line-row p{font:700 clamp(32px,5.4vw,88px)/1.06 var(--font-display);letter-spacing:-.035em;margin:0}
.line-row+.line-row{margin-top:32px}.line-row em{font-style:normal;color:var(--accent-deep)}
.line-coin{position:relative;width:100%;aspect-ratio:1}.line-coin .snag-lottie{inset:0;width:100%;height:100%;max-width:none}
.line-row .piece-card{width:100%}
#linePiece{position:relative;min-height:88px}#linePiece .piece-card.is-flipped{position:absolute;right:0;top:0;width:min(280px,calc(100vw - 32px));min-height:360px;z-index:5}
.collection-tools{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-block:24px}
.collection-tools label{margin:0}.collection-tools select{min-height:44px;max-width:100%;border:1px solid var(--line);border-radius:12px;background:var(--card);font:inherit;color:var(--ink);padding:8px 32px 8px 12px}
.collection-tools output{margin-right:auto;font-variant-numeric:tabular-nums}
.collection-filters{display:grid;gap:20px;margin-bottom:32px}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px}
.filter-chip{border:1px solid var(--line);border-radius:24px;padding:8px 16px;min-height:44px;background:transparent;color:var(--ink);font:400 14px/1.4 var(--font-body);max-width:100%;overflow-wrap:anywhere;cursor:pointer}
.filter-chip[aria-pressed=true],.segments button[aria-pressed=true]{background:var(--glow);border-color:var(--glow)}
.filter-chip:hover,.segments button:hover{outline:1px solid var(--accent-deep);outline-offset:2px}
.collection-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:24px 16px;align-items:start}
.collection-piece{min-width:0;transition:opacity 240ms var(--ease);border-radius:24px}
.collection-piece>.piece-card{width:100%}.collection-piece>p{font-size:13px;margin:12px 0 0;display:flex;justify-content:space-between;gap:8px;padding-inline:8px}.collection-piece>p span{color:var(--ink-soft)}
.collection-piece.rank-match{outline:2px solid var(--accent-deep);outline-offset:6px}.collection-piece.rank-muted{opacity:.35}
.collection-empty{padding:48px 0;border-block:1px solid var(--line);font-size:20px;max-width:60ch}
.build-bench{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:64px;align-items:start}
.build-object{display:grid;justify-items:center;gap:24px}.build-card{width:min(100%,340px)}
.build-card .piece-body{transform-origin:50px 75px}.build-card .piece-pane{transform-origin:center}
.build-maths{width:100%;max-width:42ch;text-align:center}.build-maths>strong{display:block;font:700 clamp(36px,4vw,64px)/1.1 var(--font-display);letter-spacing:-.04em}.build-maths .tag{margin-block:16px}.build-maths p{font-size:15px;line-height:1.6}
.build-controls{display:grid;gap:32px}.segments{display:flex;flex-wrap:wrap;gap:8px}.segments button{display:grid;gap:4px;flex:1 1 116px;min-height:64px;border:1px solid var(--line);border-radius:12px;padding:12px;background:transparent;color:var(--ink);font:400 14px/1.3 var(--font-body);text-align:left;cursor:pointer}.segments small{font:400 12px/1.5 var(--font-body)}
.build-shortcuts{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.rank-bar{display:flex;min-height:48px;gap:4px;width:100%;border-radius:12px;overflow:hidden}
.rank-segment{flex-basis:0;min-width:0;border:0;min-height:48px;cursor:pointer}.rank-0{background:var(--glow)}.rank-1{background:var(--accent)}.rank-2{background:var(--accent-deep)}.rank-3{background:var(--ink)}
.rank-segment:focus-visible{outline:3px solid var(--card);outline-offset:-5px}
.rank-labels{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:20px}.rank-labels>button{display:grid;gap:8px;align-content:start;background:transparent;border:0;padding:4px 0;min-height:44px;color:var(--ink);text-align:left;font-family:var(--font-body);cursor:pointer}.rank-labels span{font-size:13px}.rank-labels strong{font:500 22px/1.2 var(--font-display);font-variant-numeric:tabular-nums}
.chain-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,.8fr) minmax(0,1fr);align-items:center;gap:48px}.chain-pair figure{margin:0;min-width:0}.chain-pair figcaption{margin-top:16px;text-align:center;font-size:14px}.chain-pair svg{display:block;width:100%}.chain-traits{margin:0}.chain-traits>div{padding:16px 0;border-bottom:1px solid var(--line);display:grid;gap:4px}.chain-traits dt{font-size:13px;text-transform:capitalize;color:var(--ink-soft)}.chain-traits dd{margin:0;font-size:15px}.is-in .chain-traits>div{animation:trait-light 700ms var(--ease) var(--row-delay) both}
@keyframes trait-light{from{color:var(--accent-deep);opacity:.35;transform:translateY(8px)}to{color:var(--ink);opacity:1;transform:translateY(0)}}
.check-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:64px;align-items:start}.check-form{min-width:0}.hash-row{display:flex;gap:8px}.hash-row input{width:100%;min-width:0;height:48px;border:1px solid var(--line);border-radius:12px;background:var(--card);padding:12px;font:14px/1.4 var(--font-mono);color:var(--ink)}.check-form>label{display:block;margin-bottom:12px}.check-form>.btn{margin-top:20px}.check-result{min-width:0;padding:24px 0;border-block:1px solid var(--line)}.check-result dl>div{display:grid;gap:8px;margin-block:16px}.check-result dt{font-size:13px;color:var(--ink-soft)}.check-result dd{margin:0;overflow-wrap:anywhere}.check-result p{line-height:1.6}#checkBuyButton[aria-busy=true]{opacity:.65;cursor:progress}
.runtime-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.runtime-card{min-width:0;display:flex;flex-direction:column;gap:32px;justify-content:space-between;background:var(--card);border-radius:24px;padding:24px;text-decoration:none;color:var(--ink);font:500 17px/1.4 var(--font-body);transform:perspective(700px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg));transition:transform 180ms var(--ease)}.runtime-card svg{width:48px;height:48px;fill:none;stroke:var(--accent-deep);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.runtime-card [data-draw]{stroke-dasharray:180;stroke-dashoffset:180}.is-in .runtime-card [data-draw]{animation:runtime-draw 700ms var(--ease) calc(var(--fact-index)*70ms) both}.runtime-status{margin-top:24px;color:var(--ink-soft);font-size:14px}
@keyframes runtime-draw{to{stroke-dashoffset:0}}
.question-item{border-top:1px solid var(--line)}.question-item summary{min-height:56px;padding:20px 0;font:500 20px/1.4 var(--font-display);cursor:pointer}.question-item p{padding:0 0 24px;max-width:68ch}.questions-link{margin-top:24px}
.closing-band{display:grid;grid-template-columns:180px minmax(0,1fr);gap:48px;align-items:center;background:var(--tint);padding:64px 32px;margin-top:96px;width:100%}.closing-hook{position:relative;aspect-ratio:1}.closing-hook>svg{width:100%;height:100%;fill:none;stroke:var(--card);stroke-width:9;stroke-linecap:round}.closing-hook .snag-lottie{inset:0;max-width:none;width:100%;height:100%}.closing-hook:has(.snag-lottie svg path)>svg{opacity:0}.closing-band h2{font:700 clamp(36px,5vw,80px)/1.04 var(--font-display);letter-spacing:-.035em;max-width:18ch}.closing-band .hero-actions{margin-top:32px}.closing-band .publication-note{margin-top:24px}
.site-foot.full-footer{display:grid;grid-template-columns:1.6fr repeat(3,minmax(0,1fr));gap:48px;padding-top:64px;margin-top:0}.footer-brand .nav-wordmark{display:inline-flex}.footer-brand p{margin-top:16px;max-width:24ch}.footer-links h2{font:500 15px/1.5 var(--font-body);margin:0 0 12px}.footer-links a{display:flex;align-items:center;min-height:44px;color:var(--ink-soft);text-decoration:none;font-size:14px}.footer-links a:hover{color:var(--accent-deep)}.footer-bottom{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center;border-top:1px solid var(--line);padding-top:24px}.footer-bottom .back-top{margin-left:auto;min-height:44px;display:flex;align-items:center;color:var(--ink)}
.phone-action{display:none}.nav-links{display:flex;overflow-x:auto;overflow-y:hidden;flex-wrap:nowrap;scrollbar-width:none;min-width:0}.nav-links::-webkit-scrollbar{display:none}.nav-links a{flex:0 0 auto;width:auto;padding-inline:14px;white-space:nowrap}.nav-indicator{width:var(--chip-width,68px);left:0;transform:translateX(var(--chip-left,0px))}.nav-links a[aria-current=location]{color:var(--ink)}
.page-progress{position:absolute;bottom:-5px;left:16px;right:16px;height:2px;overflow:hidden;pointer-events:none}.page-progress span{display:block;height:100%;background:var(--glow);transform:scaleX(0);transform-origin:left}
.section-five.is-offscreen *,.section-five.is-offscreen *::before,.section-five.is-offscreen *::after,.motion-paused .section-five *,.motion-paused .section-five *::before,.motion-paused .section-five *::after{animation-play-state:paused!important}
@media(min-width:1440px){.section-five{--section-gap:64px}.line-band{padding-inline:64px}.line-row{grid-template-columns:minmax(0,1fr) 220px}.build-bench,.chain-pair,.check-layout{gap:64px}.runtime-card{padding:32px}.closing-band{padding:80px max(64px,calc((100vw - 1600px)/2))}.site-foot.full-footer{gap:64px}.nav-links{flex:1 1 600px}.phone-action{display:none}.collection-grid{gap:32px 24px}.rank-labels{gap:24px}.question-item summary{padding-block:24px}}
@media(min-width:1024px) and (max-width:1439px){.section-five{--section-gap:40px}.line-band{padding-inline:32px}.line-row{grid-template-columns:minmax(0,1fr) 168px}.build-bench,.chain-pair,.check-layout{gap:32px}.runtime-card{padding:20px;font-size:15px}.site-foot.full-footer{gap:32px}.closing-band{gap:32px}.nav-links{flex:1 1 480px}.phone-action{display:none}.collection-grid{gap:24px 16px}.rank-labels{gap:16px}.question-item summary{font-size:20px}}
@media(max-width:1023px){.build-bench{grid-template-columns:minmax(0,1fr);gap:40px}.build-object{grid-row:1}.chain-pair{gap:24px}.runtime-row{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;padding:8px 2px 24px}.runtime-card{flex:0 0 220px;scroll-snap-align:start;min-height:216px}.nav-bar{gap:12px}.nav-links{flex:1 1 280px}.check-layout{gap:32px}}
@media(max-width:768px){.section-five{--section-gap:32px;scroll-margin-top:96px}.line-band{padding:48px 16px}.line-row{grid-template-columns:minmax(0,1fr) 104px;gap:16px}.line-row p{font-size:clamp(30px,5.5vw,42px)}.collection-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 12px}.collection-filters{gap:16px}.collection-tools{gap:12px}.collection-piece .piece-back{padding:12px;font-size:12px}.collection-piece .piece-back dl>div{display:block}.collection-piece .piece-back dd{text-align:left}.collection-piece .piece-back .piece-name{font-size:13px}.collection-piece .piece-card.is-flipped{min-height:380px}.build-bench{grid-template-columns:minmax(0,1fr);gap:32px}.build-card{width:min(100%,280px)}.rank-labels{gap:8px}.rank-labels strong{font-size:18px}.rank-labels span{font-size:12px}.chain-pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.chain-traits{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}.check-layout{grid-template-columns:minmax(0,1fr);gap:24px}.runtime-card{flex-basis:216px}.question-item summary{font-size:18px}.closing-band{grid-template-columns:80px minmax(0,1fr);gap:16px;padding:48px 16px}.closing-band h2{font-size:36px}.closing-band .hero-actions{flex-wrap:wrap}.site-foot.full-footer{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 12px;padding-bottom:calc(184px + env(safe-area-inset-bottom))}.footer-brand{grid-column:1/-1}.footer-bottom{display:grid;gap:16px}.footer-bottom .back-top{margin-left:0}.nav-links{display:flex;position:fixed;inset:auto 16px 16px;flex-wrap:nowrap;padding:8px 8px calc(8px + env(safe-area-inset-bottom));gap:0}.nav-links a{font-size:14px;min-width:52px;padding-inline:12px}.nav-indicator{top:8px}.phone-action{position:fixed;z-index:39;inset:auto 16px calc(84px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:12px;min-height:60px;background:var(--ground);border:1px solid var(--line);border-radius:18px;padding:8px 12px;box-shadow:0 4px 16px var(--hairline)}.phone-action #phonePiece{width:36px;flex:0 0 36px;pointer-events:none}.phone-action .piece-rank,.phone-action .piece-back{display:none}.phone-action p{font-size:13px;margin:0;margin-right:auto;font-variant-numeric:tabular-nums}.phone-action .btn{font-size:13px;min-height:44px;padding-inline:12px}.phone-action .piece-card{min-height:0}.page-progress{bottom:-4px;left:12px;right:12px}}
@media(max-width:390px){.section-five{--section-gap:24px}.line-row{grid-template-columns:minmax(0,1fr) 80px;gap:12px}.line-row p{font-size:30px}.collection-grid{gap:20px 8px}.filter-chip{padding-inline:12px}.collection-tools label{font-size:13px}.build-controls{gap:24px}.segments button{flex-basis:104px}.rank-labels strong{font-size:16px}.rank-labels span{font-size:12px}.chain-pair{gap:12px}.hash-row{flex-wrap:wrap}.hash-row input{flex-basis:100%}.runtime-card{flex-basis:208px}.question-item summary{font-size:17px}.closing-band{grid-template-columns:56px minmax(0,1fr);gap:12px}.closing-band h2{font-size:32px}.site-foot.full-footer{gap:24px 8px}.footer-links a{font-size:13px}.phone-action{gap:8px;padding-inline:8px}.nav-links a{padding-inline:10px}}
@media(max-width:360px){.section-five{--section-gap:20px}.line-row{grid-template-columns:minmax(0,1fr) 72px;gap:8px}.line-row p{font-size:28px}.collection-piece>p{display:block;font-size:12px}.collection-piece>p span{display:block}.filter-chips{gap:6px}.filter-chip{font-size:13px}.build-card{width:248px;max-width:100%}.segments button{padding:10px}.rank-labels{gap:4px}.rank-labels strong{font-size:15px}.chain-traits{gap:0 12px}.check-result{padding-block:20px}.runtime-card{flex-basis:200px}.question-item summary{font-size:16px}.closing-band h2{font-size:30px}.closing-band .btn{padding-inline:12px}.footer-links h2{font-size:14px}.phone-action p{font-size:12px}.phone-action .btn{font-size:12px}.nav-links a{padding-inline:9px}.page-progress{left:8px;right:8px}}
@media(prefers-reduced-motion:reduce){.section-five *,.section-five *::before,.section-five *::after{animation:none!important;transition:none!important}.runtime-card [data-draw]{stroke-dashoffset:0}.runtime-card{transform:none}.chain-traits>div{opacity:1}.nav-indicator{transition:none}}