[hidden]{display:none!important}header{height:auto;min-height:82px;gap:30px;padding-top:18px;padding-bottom:18px;letter-spacing:0}.brand{font:500 clamp(16px,1.7vw,25px)/1.25 'Space Grotesk',sans-serif;max-width:760px}.edition{font-size:14px;white-space:nowrap;color:var(--mint)}.intro{margin-bottom:20px}.intro h1{font-size:32px;letter-spacing:-1px}.scale-navigation{display:flex;margin:0 0 12px;gap:8px}.scale-navigation button{flex:1;padding:12px;font-size:12px}.scale-navigation b{margin-right:5px}.scale-navigation small{display:block;margin-top:5px;opacity:.7;font-size:10px}.tour-strip{display:flex;gap:9px;align-items:center;margin:0 0 16px;flex-wrap:wrap}.tour-strip button{padding:9px 12px;font-size:12px}.tour-strip #start-story{background:#b8e7cb;color:#112126;font-weight:700}.tour-strip span{flex:1;font-size:12px;color:var(--muted)}.workspace{grid-template-columns:minmax(0,1fr) 360px}.visual-column{min-width:0;background:#102328}.stage{height:660px;min-height:540px}.modeltag{display:block;letter-spacing:.6px;font-size:8px;max-width:70%;text-align:right}aside{padding:24px}.scale-intro,.plain-math{color:#c3d6d0;font-size:13px;line-height:1.7}.equation{padding:16px 0;border-top:1px solid #365057}.equation h3{font-size:11px;color:#c9dacd;margin:0 0 10px;font-weight:500}.formula{font:500 20px/1.55 'Space Grotesk',sans-serif;color:#d4f1ad;overflow-wrap:anywhere}.equation p{font-size:12px!important;line-height:1.65!important;color:#a9c3bd!important;margin:10px 0 0!important}.scope-note{font-size:10px;line-height:1.65;color:#86a8a2}.scope-note a{color:#c1e6ce}.symbol-list{display:grid;grid-template-columns:60px 1fr;gap:8px;font-size:11px;color:#aec9c1}.symbol-list dd{margin:0}.symbol-list dt{color:#d4f1ad}.settings{margin-top:20px}#scale-labels{position:absolute;inset:0;pointer-events:none}.scale-label{position:absolute;transform:translate(-50%,-50%);white-space:nowrap;background:#12272fe8;color:#deede6;border-left:2px solid #a6d4bf;padding:5px 8px;font-size:10px;border-radius:3px}.process-status{position:absolute;bottom:96px;left:7%;right:7%;text-align:center;color:#d9edd3;font-size:12px;line-height:1.5;background:#102329d9;padding:9px 14px;border-radius:6px}.view-tools{bottom:45px;flex-wrap:wrap;padding:0 8px}.view-tools button{font-size:11px}.flow-legend{font-size:10px;max-width:94%;gap:9px 12px}.regime-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.regime-heading h3{font-size:15px;font-weight:500;margin:0}.regime-heading span{font-size:8px;letter-spacing:1px;color:#89aaa2}#regime-panel,#dryout-panel{padding:22px;border-top:1px solid #365057}.regime-buttons{display:flex;gap:6px;margin:16px 0;flex-wrap:wrap}.regime-buttons button{flex:1;padding:9px;font-size:11px;min-width:70px}.regime-buttons button.active{background:#b8e7cb;color:#102328}#regime-description,#dryout-caption{font-size:12px;line-height:1.7;color:#c0d5cc;min-height:42px}.htc-chart{width:100%;max-height:165px;font:11px 'DM Sans',sans-serif}.film-clock{display:flex;align-items:center;gap:10px;font-size:10px;color:#aac6bf;margin:22px 0}.film-clock>div{height:6px;background:#2e484c;border-radius:4px;flex:1;overflow:hidden}.film-clock i{display:block;background:#6ccdf3;height:100%;width:0}.seminar-roadmap{padding:28px 0;border-bottom:1px solid var(--line)}.seminar-roadmap ol{list-style:none;display:grid;grid-template-columns:repeat(6,1fr);padding:0;gap:18px}.seminar-roadmap strong{font-size:12px;font-weight:500;display:block}.seminar-roadmap span{font-size:10px;color:#93afa5;display:block;margin-top:8px}#scale-transition{position:absolute;inset:0;pointer-events:none;opacity:0;background:#b8e7cb}.zooming{animation:scaleFade .7s ease-out}@keyframes scaleFade{from{opacity:.15}to{opacity:0}}button:disabled,input:disabled{opacity:.4;cursor:default}#detail{font-size:12px}body[data-mode=plant] .stage{height:700px}body[data-mode=plant] #scale-transition{display:none}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 320px}aside{padding:20px}.stage{height:620px}.scale-navigation button{padding:10px 8px;font-size:11px}.formula{font-size:18px}}
@media(max-width:800px){header{align-items:flex-start;flex-direction:column;gap:8px}.edition{display:block;font-size:12px}.intro>p{display:none}.workspace{display:flex;flex-direction:column}.stage,body[data-mode=plant] .stage{height:540px;min-height:0}.scale-navigation{flex-wrap:wrap}.scale-navigation button{flex:1 1 28%}.tour-strip span{flex-basis:100%;order:2}.seminar-roadmap ol{grid-template-columns:repeat(2,1fr)}.regime-heading{display:block}.regime-heading span{display:block;margin-top:8px}.scale-label{font-size:9px;padding:4px}.process-status{font-size:10px}.modeltag{max-width:65%}.formula{font-size:22px}}

/* LaTeX equations: retain mathematical spacing and avoid clipped fractions. */
.formula{font-size:17px;line-height:normal;overflow-x:auto;overflow-y:hidden;padding:10px 0;overflow-wrap:normal}.formula .katex{font-size:1.1em}.formula .katex-display{margin:.35em 0;text-align:left}.formula .katex-display>.katex{text-align:left}.equation{padding:19px 0}.workspace{grid-template-columns:minmax(0,1fr) 410px}@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 360px}.formula{font-size:15px}}@media(max-width:800px){.formula{font-size:17px}}

/* Desktop presentation: the model and mathematics share the screen. */
main{max-width:2200px;padding:22px 2.5vw 0}header{padding-left:2.5vw;padding-right:2.5vw}.intro{margin-bottom:18px}.intro h1{font-size:27px}.workspace{grid-template-columns:minmax(0,1.1fr) minmax(490px,1fr)}aside{padding:28px 30px}.stage,body[data-mode=plant] .stage{height:calc(100vh - 230px);min-height:580px}.visual-column{position:relative}.equation h3{font-size:19px!important;font-weight:700!important;line-height:1.35;color:#edf7e8!important;margin-bottom:15px}.formula{font-size:22px!important;padding:12px 0}.formula .katex-display,.formula .katex-display>.katex{text-align:center}.formula .katex{font-size:1.1em}.equation{padding:22px 0}.scale-intro,.plain-math,.info p{font-size:15px;line-height:1.65}.equation p{font-size:14px!important}.scope-note{font-size:11px}h2{font-size:30px}.tour-strip{position:sticky;top:0;z-index:20;background:#0b171bf5;padding:12px 0;gap:14px;border-bottom:1px solid #426058}.tour-strip #start-story,.tour-strip #tour-next{background:#c8fa8e;color:#152316;border:2px solid #e2ffbc;font-size:19px;font-weight:700;padding:17px 27px;box-shadow:0 0 24px #a9ed6330;border-radius:10px}.tour-strip #tour-next{margin-left:auto;min-width:235px}.tour-strip #tour-next:hover,.tour-strip #start-story:hover{background:#e3ffba;transform:translateY(-1px)}.tour-strip #tour-next:disabled{opacity:.55}.tour-strip #tour-progress{font-size:14px;color:#c4dccd;max-width:530px;line-height:1.5}.tour-strip #tour-prev,.tour-strip #tour-end{font-size:12px;background:transparent;padding:9px}.tour-strip #tour-end{order:5}.guided #next-scale,.guided #tour,.guided #top{display:none!important}.guided .intro{display:none}.guided .stage{height:calc(100vh - 175px)}#journey-label{position:absolute;top:95px;left:6%;right:6%;padding:14px 18px;text-align:center;background:#0d2029ed;color:#e3ffb9;font-size:18px;z-index:6;border:1px solid #b8df8a;border-radius:8px;pointer-events:none}.label.active{box-shadow:0 0 25px #c8fa8e99;border:2px solid #deffae;font-size:14px}.tour-current{border-color:#c8fa8e!important}.guided .seminar-roadmap{display:none}.formula .katex-html{white-space:nowrap}.formula{min-width:0}.equation{min-width:0}
@media(min-width:1600px){.formula{font-size:25px!important}.equation h3{font-size:22px!important}.stage{position:sticky;top:88px}}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) minmax(430px,1fr)}aside{padding:22px}.formula{font-size:20px!important}}
@media(max-width:800px){.workspace{display:flex}.stage,body[data-mode=plant] .stage,.guided .stage{height:480px;min-height:0}.tour-strip{gap:8px}.tour-strip #start-story,.tour-strip #tour-next{font-size:16px;padding:14px 18px;min-width:0}.tour-strip #tour-progress{font-size:11px}.equation h3{font-size:18px!important}.formula{font-size:19px!important}.intro h1{font-size:25px}aside{padding:22px}#journey-label{font-size:13px}.guided .intro{display:none}}
.stage,body[data-mode=plant] .stage,.guided .stage{max-height:780px}.guided .tour-strip{margin-bottom:12px}
.equation p a{color:#c8fa8e}