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/* Presentation identity and chapter markers. Existing olive, cream and citron palette retained. */
.section-heading{position:absolute;top:23px;left:5.5vw;display:flex;align-items:center;gap:12px;max-width:89%;z-index:2}.section-heading img{width:36px;height:36px;flex-shrink:0}.section-badge{display:block;background:var(--acid);color:var(--bg);padding:9px 15px;font-size:13px;letter-spacing:.5px;font-weight:700;line-height:1.2}section.slide:not(.cover-slide){padding-top:99px;padding-bottom:85px}.cover-slide{display:block!important;min-height:100svh;padding:130px 6.2vw 100px!important}.cover-brand{position:absolute;left:6.2vw;top:30px;display:flex;align-items:center;gap:15px}.cover-brand strong{display:block;font-size:29px;font-weight:700;color:var(--ink)}.cover-brand span{display:block;font-size:14px;color:var(--muted);margin-top:4px}.cover-brand img{width:62px;height:62px}.cover-content{max-width:1120px;margin:35px 0 0}.cover-slide h1{font-size:clamp(62px,7.3vw,108px);line-height:.99;letter-spacing:-2.8px;margin:0 0 27px;font-weight:400}.cover-slide .eyebrow{margin-bottom:20px}.cover-introduction{max-width:1050px;border-left:2px solid var(--acid);padding-left:22px;margin:0 0 30px}.cover-introduction p{font-size:22px;line-height:1.4;color:var(--ink);margin:0 0 9px}.cover-introduction p:last-child{margin-bottom:0}.cover-details{display:grid;grid-template-columns:1fr 1.6fr 1.2fr 1.3fr;gap:25px;margin:0 0 30px;max-width:1060px;border-top:1px solid var(--line);padding-top:22px}.cover-details div{min-width:0}.cover-details dt{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin-bottom:9px}.cover-details dd{font-size:20px;margin:0;color:var(--ink);line-height:1.25}.cover-scroll{display:inline-flex;align-items:center;gap:35px;color:var(--acid);font-size:17px;text-decoration:none}.cover-scroll span{font-size:24px}.cover-scroll:hover{text-decoration:underline;text-underline-offset:5px}.contribution-cards{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:20px}.member-card{padding:17px 16px;border:1px solid #a4b48a66;background:#1d271bca;min-width:0}.member-role{display:block;color:var(--muted);font-size:9px;letter-spacing:.8px;line-height:1.4}.member-card h3{font-size:24px;font-weight:400;color:var(--acid);margin:8px 0 9px}.member-card p{font-size:16px;line-height:1.35;color:var(--ink);margin:0 0 12px}.member-slides{font-size:12px;color:var(--muted)}.contribution-note{font-size:11px;color:var(--muted);line-height:1.4;margin:9px 0 0}.contributions-slide .argument p{font-size:17px;line-height:1.35}.contributions-slide .argument-blocks{gap:13px}.contributions-slide .argument{padding-top:13px}.contributions-slide .takeaway{font-size:17px;margin-top:17px}.expand-simulation{margin-left:auto;background:none;border:1px solid var(--line);color:var(--ink);font-size:19px;width:26px;height:26px;line-height:1;padding:0}.expand-simulation:hover{color:var(--acid);border-color:var(--acid)}.sim-counter{margin-left:4px}.sim-shell:fullscreen,.sim-shell.expanded-fallback{background:var(--bg);display:flex;flex-direction:column;padding:1vh 3vw;border:0}.sim-shell:fullscreen .scene-stage,.sim-shell.expanded-fallback .scene-stage{flex:1;height:auto;min-height:0;max-height:65vh}.sim-shell:fullscreen .architecture-svg,.sim-shell.expanded-fallback .architecture-svg{max-height:60vh;height:100%}.sim-shell:fullscreen .scene-explanation,.sim-shell.expanded-fallback .scene-explanation{min-height:125px}.sim-shell:fullscreen .scene-explanation h3,.sim-shell.expanded-fallback .scene-explanation h3{font-size:32px}.sim-shell:fullscreen .scene-explanation p,.sim-shell.expanded-fallback .scene-explanation p{font-size:24px}.sim-shell:fullscreen .overview-stop strong,.sim-shell.expanded-fallback .overview-stop strong{font-size:40px}.sim-shell.expanded-fallback{position:fixed;inset:0;z-index:60}.sim-shell:fullscreen .overview-track,.sim-shell.expanded-fallback .overview-track{max-width:600px}.sim-shell:fullscreen .overview-stop,.sim-shell.expanded-fallback .overview-stop{padding:20px}.sim-shell:fullscreen .sim-top,.sim-shell.expanded-fallback .sim-top{font-size:12px}
@media(min-width:1060px) and (max-height:1000px){section.slide:not(.cover-slide){padding-top:91px;padding-bottom:80px}.slide:not(.cover-slide) h2{font-size:49px;margin-bottom:17px}.slide:not(.cover-slide) .lead{font-size:22px;margin-bottom:19px}.slide:not(.cover-slide) .argument-blocks{gap:14px}.slide:not(.cover-slide) .argument{padding-top:13px}.slide:not(.cover-slide) .argument p{font-size:18px;line-height:1.35}.slide:not(.cover-slide) .argument h3{font-size:21px;margin-bottom:6px}.slide:not(.cover-slide) .takeaway{margin-top:18px}.cover-content{margin-top:15px}.cover-slide h1{font-size:clamp(65px,6.9vw,96px)}.contributions-slide .argument p{font-size:17px!important}.contribution-cards{margin-top:16px}.member-card{padding:14px}.member-card p{font-size:16px}.contributions-slide .takeaway{font-size:16px;margin-top:13px!important}}
@media(max-width:1050px){.section-heading{left:4vw;top:22px}.section-badge{font-size:11px;padding:9px 12px}.section-heading img{width:30px;height:30px}.cover-slide{padding-top:125px!important}.cover-slide h1{font-size:clamp(57px,7.4vw,85px)}.cover-introduction p{font-size:21px}.cover-details{grid-template-columns:1fr 1fr;gap:20px}.cover-details dd{font-size:19px}.member-card h3{font-size:22px}.member-card p{font-size:15px}.member-role{font-size:8px}}
@media(max-width:740px){.section-heading{position:static;margin-bottom:4px;max-width:100%;gap:10px}section.slide:not(.cover-slide){padding-top:25px;padding-bottom:90px}.section-badge{font-size:11px}.section-heading img{width:32px;height:32px}.cover-slide{padding:120px 6vw 100px!important}.cover-brand{left:6vw;top:25px}.cover-brand img{width:52px;height:52px}.cover-brand strong{font-size:26px}.cover-content{margin-top:20px}.cover-slide h1{font-size:clamp(49px,9.9vw,76px);letter-spacing:-1.5px}.cover-introduction{padding-left:16px;margin-bottom:28px}.cover-introduction p{font-size:20px;line-height:1.4}.cover-details{grid-template-columns:1fr 1fr;gap:20px 14px;padding-top:20px}.cover-details dd{font-size:18px}.cover-details dt{font-size:10px}.member-card h3{font-size:24px}.member-card p{font-size:17px}.member-role{font-size:9px}.contributions-slide .argument p{font-size:19px}.contributions-slide .takeaway{font-size:19px}.expand-simulation{width:28px;height:28px}.sim-top{padding-left:12px;padding-right:12px;gap:7px}.sim-label{letter-spacing:.3px;font-size:9px}.sim-counter{font-size:9px}.sim-shell:fullscreen .scene-explanation p{font-size:21px}}
@media(max-width:390px){.contribution-cards{grid-template-columns:1fr}.cover-details{grid-template-columns:1fr}.cover-slide h1{font-size:49px}.sim-label{font-size:8px}}
/* Shared explanatory state: the same step selects the scene and its paragraph. */
.argument.is-current{background:#e9ee320a;box-shadow:none}.argument.is-current h3{color:var(--acid)}.argument.is-current .argument-index{font-weight:700}.argument p,.argument h3{transition:color .25s}.takeaway.is-current{background:#e9ee3210;box-shadow:0 0 0 7px #e9ee3208}.implementation-path{stroke-dasharray:5 4}.presenter-list{display:flex;flex-direction:column;gap:9px}.presenter{display:flex;align-items:center;gap:12px;white-space:nowrap}.presenter img,.member-identity img{object-fit:contain;border-radius:50%;background:#eeeacd0c;border:1px solid #a4b48a40}.presenter img{width:54px;height:54px;flex-shrink:0}.presenter span{font-size:20px}.cover-details{grid-template-columns:1fr 1.7fr 1.2fr 1.3fr}.member-identity{display:flex;align-items:center;gap:9px;margin-bottom:10px}.member-identity h3{margin:0}.member-identity img{width:44px;height:44px;flex-shrink:0}.member-card .member-role{margin-bottom:10px}.zones-scene{text-align:center}.zone-row{display:flex;justify-content:center;gap:17px;margin:30px 0 22px}.zone{width:100px;padding:18px 8px;border:1px solid #a4b48a66;background:#24301f;transition:opacity .5s}.zone strong{font-size:21px;font-weight:400;display:block}.zone-object{font-size:39px;display:block;color:var(--acid);margin:10px 0}.zone small{font-size:11px;color:var(--muted)}.zone.unavailable{opacity:.35;border-style:dashed}.zone.unavailable .zone-object{text-decoration:line-through;color:var(--muted)}.zones-scene p{font-size:24px;line-height:1.25;margin:0 0 16px}.zone-caveat{font-size:13px;line-height:1.4;color:var(--muted)}.growth-scene{text-align:center}.growth-objects{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px auto;max-width:300px}.growth-objects>span{font-size:34px;color:var(--acid);display:block}.growth-objects small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.growth-scene>strong{font-size:28px;font-weight:400;display:block}.growth-scene p{font-size:16px;color:var(--muted);line-height:1.4}.growth-objects .new-object{animation:object-added 2s ease-in-out infinite alternate}.class-selection{text-align:center}.class-selection>strong{display:block;font-size:37px;line-height:1.05;color:var(--acid);font-weight:400;margin:22px 0 15px}.class-selection>p{font-size:19px;color:var(--ink);line-height:1.4;margin:0 0 20px}.class-spectrum{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:20px 0}.class-spectrum button{border:1px solid var(--line);background:transparent;color:var(--muted);font-size:12px;padding:7px 10px}.class-spectrum button.selected{border-color:var(--acid);color:var(--acid);background:#e9ee3210}.class-footnote{display:block;color:var(--muted);font-size:12px;line-height:1.4;max-width:320px;margin:auto}.access-scene{text-align:center}.access-scene label{display:block;text-align:left;font-size:12px;color:var(--muted);margin-top:20px}.access-scene select{display:block;width:100%;margin-top:9px;padding:11px 0;background:#172017;color:var(--ink);font-size:17px;border:0;border-bottom:1px solid var(--line)}.access-route{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:35px 0 25px}.access-route strong{font-size:23px;font-weight:400}.access-route>span{color:var(--acid);font-size:25px}.access-result{font-size:25px;color:var(--acid);line-height:1.25}.access-scene>p{font-size:12px;color:var(--muted);margin-top:16px}.encryption-scene{text-align:center}.encryption-hop{display:flex;align-items:center;justify-content:center;gap:20px;margin:25px 0}.encryption-hop strong{font-size:24px;font-weight:400}.encryption-hop>span{font-size:13px;color:var(--acid)}.encrypted-object{border:1px solid var(--line);padding:18px;margin:20px auto;max-width:270px}.encrypted-object>span{font-size:38px;color:var(--acid);display:block}.encrypted-object strong{display:block;font-size:25px;font-weight:400;margin:8px 0}.encrypted-object p,.encryption-scene>p{font-size:14px;color:var(--muted);line-height:1.4}.review-scenario{text-align:center}.review-scenario>strong{display:block;font-size:31px;color:var(--acid);font-weight:400;margin:23px 0 15px}.review-arrow{font-size:32px;color:var(--muted)}.review-scenario h4{font-weight:400;font-size:28px;line-height:1.15;margin:16px 0}.review-scenario p{font-size:18px;color:var(--muted);line-height:1.4}.manual-mode{margin-left:auto;background:transparent;color:var(--ink);border:1px solid var(--line);font-size:12px;letter-spacing:.2px;padding:8px 12px;white-space:nowrap}.manual-mode[aria-pressed=true]{border-color:var(--acid);color:var(--acid)}.footer-help{margin-left:0}.step-dots{gap:1px}.step-dots button{width:20px}.step-dots span{width:12px}
@keyframes object-added{from{opacity:.35;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1050px){.footer-help{display:none}.manual-mode{font-size:11px}.presenter img{width:48px;height:48px}.presenter span{font-size:18px}.member-identity{gap:7px}.member-identity img{width:34px;height:34px}.member-identity h3{font-size:20px}.zone-row{gap:10px}.zone{padding:14px 5px}.zone strong{font-size:18px}.class-selection>strong{font-size:31px}}
@media(max-width:740px){.cover-details{grid-template-columns:1fr 1fr}.presenter span{font-size:18px}.manual-mode{margin-left:0}.page-controls{margin-left:auto}.member-identity h3{font-size:23px}.member-identity img{width:44px;height:44px}.class-selection>strong{font-size:34px}.step-dots button{width:23px}.step-dots span{width:14px}}
@media(max-width:390px){.cover-details{grid-template-columns:1fr}.presenter-list{flex-direction:row;flex-wrap:wrap;gap:16px}.step-dots button{width:17px}.step-dots span{width:10px}.manual-mode{font-size:10px;padding:7px}.progress{width:45px}.zone-row{gap:7px}.zone{width:85px}.zones-scene p{font-size:22px}.class-spectrum{gap:6px}.class-spectrum button{font-size:11px}}
@media(prefers-reduced-motion:reduce){.growth-objects .new-object{animation:none}.argument p,.argument h3{transition:none}}
.contributions-slide .member-card{padding:12px}.contributions-slide .member-card .member-role{margin-bottom:6px}.contributions-slide .member-identity{margin-bottom:7px}.contributions-slide .argument-blocks{gap:10px!important}
.argument{position:relative}.argument.is-current{box-shadow:none}.argument.is-current::before{content:"";position:absolute;left:-10px;top:0;bottom:0;width:3px;background:var(--acid);pointer-events:none}

@media(min-width:1060px) and (max-height:1000px){.slide.contributions-slide .lead{margin-bottom:10px}}