:root{--paper:#F3EBDD;--ink:#24211D;--wine:#6E2833;--olive:#68705C;--gold:#AE8B4D;--line:rgba(36,33,29,.17);--muted:#71695e;font-family:'Be Vietnam Pro',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 50% 30%,#fffaf16b,transparent 70%);min-height:100dvh}button,input{font:inherit}button{color:inherit;cursor:pointer;touch-action:manipulation}button:disabled{cursor:default;opacity:.42}button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:5px}button,summary{-webkit-tap-highlight-color:transparent}[hidden]{display:none!important}.skip{position:absolute;top:-100px}.skip:focus{top:5px;z-index:50;background:var(--paper);padding:12px}.masthead{width:min(1250px,calc(100% - 64px));margin:auto;height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{padding:0;border:0;background:none;display:flex;align-items:center;gap:13px;text-align:left;font-size:14px;line-height:1.5}.brand 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24px}.mission{text-align:center;padding:21px 0 0;min-height:114px}.eyebrow{font-size:10px;letter-spacing:.18em;font-weight:600;color:var(--muted);margin:0 0 9px}h1,h2{font-family:Lora,serif;font-weight:400}h1{font-size:clamp(25px,2.6vw,36px);line-height:1.22;margin:0}#hint{font-size:14px;color:var(--muted);margin:10px 0 0;min-height:20px}.cell-scene{position:relative;width:min(100%,940px);aspect-ratio:5/3;margin:0 auto;isolation:isolate}#cell-live{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}.port{position:absolute;z-index:2;transform:translate(-50%,-50%);border:1px solid transparent;border-radius:25px;padding:8px 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b{position:absolute;width:2px;height:13px;top:-4px;background:var(--ink)}.goal-note{font-size:10px;display:none;margin-top:5px;color:var(--muted);white-space:nowrap}.capacity-readout{position:absolute;top:12%;left:77%;width:18%;font-size:12px;color:var(--muted);text-align:center}.capacity-readout strong{display:block;font-size:20px;line-height:1.7;font-weight:600;color:var(--olive)}.capacity-readout strong small{font-size:11px;font-weight:400}.capacity-meter{height:5px;position:relative;background:#68705c22;width:100%;border-radius:2px}.capacity-meter i{background:var(--olive);width:100%}.capacity-meter b{display:none}.organic-goal{position:absolute;left:50%;top:99%;transform:translateX(-50%);text-align:center;width:20%}.organic-goal .goal-meter i{background:var(--wine)}.module{position:absolute;left:31%;top:53.333%;width:18%;height:24%;transform:translate(-50%,-50%);background:none;border:2px dashed var(--wine);border-radius:50%;z-index:3}.module.breakdown{left:69%;border-color:var(--olive)}.module.placed{border-color:transparent}.module .socket-plus{font-size:49px;color:var(--wine);font-weight:400}.module.breakdown .socket-plus{color:var(--olive)}.module.placed .socket-plus{display:none}.module-label{position:absolute;top:104%;left:50%;transform:translateX(-50%);width:240px;pointer-events:none}.module-label strong{font-family:Lora,serif;font-weight:400;font-size:23px;display:block;color:var(--wine)}.breakdown .module-label strong{color:var(--olive)}.module-label small{display:block;font-size:11px;margin-top:5px;color:var(--muted);font-weight:400}.module:not(.placed) .module-label small{visibility:hidden}.process-control{position:absolute;left:31%;top:77%;width:21%;transform:translateX(-50%);z-index:4}.breakdown-control{left:69%}.requested label{display:flex;justify-content:space-between;font-size:11px;line-height:1.5;color:var(--muted)}.requested 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.experiment-button.selected{background:var(--olive)}.cycle-counter{position:absolute;right:7%;bottom:4%;font-size:10px;letter-spacing:.08em;color:var(--muted)}.cycle-counter b{font-family:Lora,serif;font-size:28px;font-weight:400;display:inline-block;margin-left:5px;color:var(--ink)}.cycle-counter span{font-size:12px}.preview-tag{position:absolute;left:3%;bottom:10%;font-size:9px;letter-spacing:.13em;border-left:2px solid var(--gold);padding-left:8px;color:var(--muted)}.parts{position:absolute;left:50%;bottom:6%;transform:translateX(-50%);z-index:8}.part{padding:10px 16px;border:1px solid var(--wine);background:var(--paper);border-radius:4px;font-size:13px;box-shadow:0 5px 18px #24211d0b;cursor:grab;color:var(--wine);white-space:nowrap}.part>span{margin-right:8px;font-size:15px}.part.breakdown-part{color:var(--olive);border-color:var(--olive)}.focus-source,.focus-target{box-shadow:0 0 0 6px #ae8b4d30,0 0 0 12px #ae8b4d14!important;border-color:var(--gold)!important;animation:invite 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auto 0;display:flex;align-items:center;justify-content:space-between;gap:26px;border-top:1px solid var(--line);padding:17px 0}.action-copy{min-width:0}.action-copy p{margin:0;font-size:14px;line-height:1.6;max-width:650px}.action-buttons{display:flex;gap:10px;flex-shrink:0}.primary,.secondary{padding:13px 22px;border:1px solid var(--ink);font-size:13px;border-radius:3px;line-height:1.5;white-space:nowrap}.primary{background:var(--ink);color:var(--paper);box-shadow:0 3px 0 #24211d12}.primary span{margin-left:18px}.primary:hover{background:var(--wine);border-color:var(--wine)}.secondary{background:transparent}.secondary:hover{background:#24211d08}.progress-pips{display:flex;gap:5px;margin-bottom:8px}.progress-pips:empty{display:none}.progress-pips i{width:18px;height:3px;background:#24211d1a}.progress-pips i.done{background:var(--olive)}.progress-pips i.current{background:var(--gold)}.causal-chain{display:flex;align-items:center;justify-content:center;gap:18px;font-size:14px;min-height:47px;margin-top:5px}.causal-chain span{display:flex;gap:8px;align-items:center}.causal-chain b{font-size:25px;font-weight:500;color:var(--gold)}.causal-chain i{font-style:normal;color:var(--muted)}.causal-chain .wine{color:var(--wine)}.causal-chain .olive{color:var(--olive)}footer{max-width:1250px;width:calc(100% - 64px);margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:12px 0 20px;font-size:9px;letter-spacing:.08em;color:var(--muted)}.text-button{background:none;border:0;color:var(--muted);padding:5px 0;font-size:10px}.summary{max-width:1000px;margin:45px auto}.summary>h1{font-size:52px;margin:16px 0 30px}.summary em{font-weight:400}.summary-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.summary-cards article{padding:25px 28px 25px 0}.summary-cards article+article{padding-left:28px;border-left:1px solid var(--line)}.card-icon{font-size:27px;color:var(--gold)}.summary h2{font-size:22px;margin:13px 0}.summary p{font-size:14px;line-height:1.9}.summary .lesson{font-size:18px;line-height:1.8;max-width:850px;margin:30px 0 20px}.summary details{max-width:850px;font-size:13px}.summary summary{cursor:pointer;color:var(--wine)}.summary details p{font-size:13px}.summary blockquote{margin:30px 0;padding:14px 0 14px 22px;border-left:2px solid var(--gold);font-family:Lora,serif;font-size:23px;line-height:1.6;max-width:800px}.summary-actions{display:flex;gap:12px}dialog{max-width:620px;width:calc(100% - 32px);border:1px solid var(--ink);padding:35px 40px;background:var(--paper);color:var(--ink);max-height:90dvh}dialog::backdrop{background:#24211d77;backdrop-filter:blur(4px)}dialog h2{font-size:34px;margin:12px 0 22px}dialog p,dialog li{font-size:13px;line-height:1.9}dialog ul{padding-left:18px}dialog li+li{margin-top:8px}.dialog-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:28px}.energy-limited #node-energy{box-shadow:0 0 0 7px #ae8b4d22}.energy-limited #synthesis-actual,.organic-limited #breakdown-actual{color:var(--wine)}.renewal-limited .capacity-readout,.renewal-limited .capacity-readout strong{color:var(--wine)}.renewal-limited #capacity-fill{background:var(--wine)}
body[data-mode=intro] .module .socket-plus{display:none}body[data-mode=intro] .capacity-readout,body[data-mode=intro] .raw-value,body[data-mode=intro] .readout,body[data-mode=intro] .organic-port>span{visibility:hidden}body[data-mode=intro] .module{border-color:transparent}body[data-mode=intro] .action-copy p{font-size:15px}body[data-mode=assemble] .capacity-readout{opacity:.45}body[data-mode=assemble] .module:not(.placed){background:#f3ebddd9}body[data-mode=challenge] .goal-meter,body[data-mode=challenge] .goal-note,body[data-mode=challenge] .capacity-meter b{display:block}body:not([data-mode=challenge]) .requested input,body:not([data-mode=challenge]) .requested label{display:none}body[data-mode=challenge] .experiment-button{display:none}.reduced *{animation:none!important;scroll-behavior:auto!important}
@keyframes invite{50%{box-shadow:0 0 0 8px #ae8b4d40,0 0 0 16px #ae8b4d0a}}
@media(min-width:1000px) and (max-height:850px){.masthead{height:72px}.mission{padding-top:16px;min-height:101px}.cell-scene{width:min(100%,calc((100dvh - 290px)*1.6667))}.module-label strong{font-size:21px}.module-label small{font-size:10px;margin-top:3px}.process-control{top:79%}.actionbar{min-height:78px;margin-top:10px;padding:13px 0}.phase-strip{margin-top:0}footer{padding:7px 0 12px}.port{font-size:13px;padding:7px 9px}.organic-port{font-size:12px}.capacity-readout{font-size:11px}.capacity-readout strong{font-size:18px}.raw-value{font-size:11px}.process-control .experiment-button{margin-top:7px;padding:7px;font-size:11px}.actual{font-size:10px}.preview-tag{bottom:3%}}
@media(max-width:760px){.masthead{width:calc(100% - 32px);height:76px}.brand-mark{font-size:30px}.brand{gap:8px;font-size:11px}.brand strong{font-size:17px}.chapters{gap:6px;font-size:10px}.chapters i{width:10px}.chapters span{gap:4px}.chapters b{width:22px;height:22px;font-size:10px}.utilities{gap:0}.icon-button{width:30px;font-size:21px}.utilities #restart{display:none}main{padding:0 12px}.mission{padding-top:22px;min-height:130px}h1{font-size:28px;max-width:540px;margin:auto}#hint{font-size:12px;max-width:90%;margin:10px auto 0}.eyebrow{font-size:9px}.cell-scene{width:100%;margin-top:12px}.module-label{width:160px}.module-label strong{font-size:18px}.module-label small{font-size:9px;max-width:140px;margin:4px auto}.port{font-size:12px;padding:6px 7px}.raw-value{font-size:10px;top:29%}.readout{font-size:12px}.capacity-readout{font-size:9px;left:79%;width:20%}.capacity-readout strong{font-size:17px}.capacity-readout strong small{font-size:9px}.organic-port{font-size:11px}.process-control{width:24%;top:80%}.actual{font-size:9px;gap:3px}.experiment-button{font-size:9px;padding:7px 1px}.requested label{font-size:9px}.parts{bottom:-6%}.part{padding:8px 12px;font-size:11px}.cycle-counter{bottom:-13%;right:3%}.cycle-counter b{font-size:23px}.preview-tag{bottom:-6%}.phase-strip{margin:40px 14px 0}.phase-strip li{font-size:9px;gap:4px}.phase-strip li b{font-size:17px}.actionbar{flex-direction:column;align-items:stretch;gap:14px;padding:18px 4px;margin-top:40px;min-height:130px}.action-copy{text-align:center}.action-copy p{font-size:13px;margin:auto}.action-buttons{justify-content:center}.progress-pips{justify-content:center}.primary,.secondary{font-size:12px;padding:12px 18px}.goal-note{font-size:8px}.goal-meter{height:4px}.organic-goal{top:99%;width:25%}.energy-readout{top:35%;width:22%}.goal-meter b,.capacity-meter b{height:10px;top:-3px}.causal-chain{gap:8px;font-size:10px;margin-top:36px;min-height:30px}.causal-chain span{gap:4px}.causal-chain b{font-size:18px}.causal-chain+.actionbar{margin-top:12px}.phase-strip:not([hidden])~.actionbar{margin-top:12px}footer{width:calc(100% - 32px);font-size:8px;gap:12px}footer>span{display:none}.summary{margin:35px 10px}.summary>h1{font-size:42px}.summary-cards{grid-template-columns:1fr}.summary-cards article{padding:18px 0}.summary-cards article+article{padding:18px 0;border-left:0;border-top:1px solid var(--line)}.summary h2{font-size:21px;margin:6px 0}.summary p{font-size:13px}.summary .lesson{font-size:16px}.summary blockquote{font-size:20px}.summary-actions{flex-wrap:wrap}dialog{padding:30px 24px}body[data-mode=challenge] .actionbar{margin-top:50px}body[data-mode=challenge] .phase-strip:not([hidden])~.actionbar{margin-top:15px}}
@media(max-width:480px){.masthead{gap:6px}.chapters{position:absolute;top:89px;left:50%;transform:translateX(-50%);white-space:nowrap}.chapters i{width:25px}.mission{padding-top:58px;min-height:168px}.module-label strong{font-size:15px}.module-label small{font-size:8px;width:120px}.port{font-size:10px;padding:6px}.port-dot{font-size:9px}.energy-port>span{font-size:17px}.organic-port{font-size:9px}.capacity-readout{font-size:8px;top:7%}.capacity-readout strong{font-size:15px}.raw-value{font-size:8px}.actual{font-size:8px}.experiment-button{font-size:8px;padding:8px 0}.module-label{width:130px}.process-control{top:83%;width:26%}.requested label{font-size:8px}input[type=range]{margin:8px 0 5px}.readout{font-size:11px}.energy-readout{top:35%}.organic-port{top:93%}.organic-goal{top:102%}.goal-note{font-size:7px}.phase-strip{margin-top:57px}.cycle-counter{bottom:-19%}.parts{bottom:-12%}.preview-tag{bottom:-8%}.actionbar{margin-top:53px}.causal-chain{margin-top:53px}.summary-cards p{margin:6px 0}.progress-pips i{width:16px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important}}

/* Keep the physical readouts readable; reveal requested activity during trials. */
.requested label,.actual{font-size:13px}
.module-label small{font-size:12px;line-height:1.35}
.goal-note{font-size:11px;line-height:1.35}
.experiment-button{font-size:13px;min-height:38px}
body[data-mode=experiment] .requested label{display:flex}
body:not([data-mode=challenge]) .requested input{display:none}
.enzyme-cue{position:absolute;left:82%;top:50%;max-width:16%;z-index:5;padding:5px 7px;border-left:2px solid var(--olive);background:var(--paper);color:var(--olive);font-size:12px;line-height:1.35}
#enzyme-cue{position:absolute;left:82%;top:50%;max-width:16%;z-index:5;padding:5px 7px;border-left:2px solid var(--olive);background:var(--paper);color:var(--olive);font-size:12px;line-height:1.35}
body[data-mode=challenge] .phase-strip,body[data-mode=challenge] .causal-chain{margin-top:34px}
body[data-mode=challenge] .actionbar{margin-top:34px}
body[data-mode=challenge] .phase-strip:not([hidden])~.actionbar,body[data-mode=challenge] .causal-chain:not([hidden])+.actionbar{margin-top:12px}

/* The sequence lives in the free space above the cell on short projectors. */
@media(min-width:761px) and (max-height:850px){
  #playground{position:relative}
  .masthead{height:58px}
  .brand{font-size:12px;line-height:1.3}.brand strong{font-size:19px}.brand-mark{font-size:32px}
  .mission{min-height:72px;padding-top:8px}.mission .eyebrow{display:none}
  h1{font-size:30px;line-height:1.18}
  #hint{font-size:13px;line-height:1.35;margin-top:6px;min-height:18px}
  .cell-scene{width:min(100%,940px,calc((100dvh - 264px)*1.6667))}
  .module-label strong{font-size:22px}.module-label small{font-size:12px;margin-top:3px}
  .process-control{top:79%;width:22%}
  .requested label,.actual{font-size:13px}
  .process-control .experiment-button{font-size:12px;min-height:36px;margin-top:6px;padding:7px 5px}
  .phase-strip,.causal-chain,body[data-mode=challenge] .phase-strip,body[data-mode=challenge] .causal-chain{
    position:absolute;top:76px;left:50%;transform:translateX(-50%);width:min(54%,550px);max-width:550px;margin:0;z-index:5;
  }
  .phase-strip li{font-size:11px;gap:5px}.phase-strip li b{font-size:18px}.phase-strip ol{gap:6px}
  .phase-strip .cycle-track{margin-top:5px}
  .causal-chain{min-height:32px;gap:12px;font-size:13px}.causal-chain b{font-size:22px}
  .actionbar{min-height:62px;margin-top:8px;padding:10px 0;gap:18px}
  .action-copy p{font-size:13px;line-height:1.45}
  .primary,.secondary{font-size:13px;padding:10px 18px}
  body[data-mode=challenge] .actionbar,
  body[data-mode=challenge] .phase-strip:not([hidden])~.actionbar,
  body[data-mode=challenge] .causal-chain:not([hidden])+.actionbar{margin-top:32px}
  footer{font-size:9px;line-height:1.3;padding:4px 0 6px}
  .text-button{font-size:10px;padding:0}
  .goal-note{font-size:11px}.organic-goal{top:98%;width:23%}
}

/* On phones, keep the cell diagram intact and place each control in its own row. */
@media(max-width:760px){
  .utilities #restart{display:inline-grid;place-items:center}
  .icon-button{width:36px;height:36px}
  .cell-scene{margin-bottom:16px}
  body[data-mode=assemble] .cell-scene{margin-bottom:70px}
  body:is([data-mode=baseline],[data-mode=experiment],[data-mode=challenge]) .cell-scene{margin-bottom:48px}
  .cell-scene:has(.process-control:not([hidden])){margin-bottom:260px!important}
  .port{font-size:12px;padding:7px 8px}.raw-port{left:13%}.energy-port>span{font-size:20px}
  .raw-value{font-size:11px}.organic-port{font-size:12px;top:93%}
  .module-label{width:150px}.module-label strong{font-size:19px}.module-label small{font-size:12px;width:145px;max-width:145px;line-height:1.25}
  .capacity-readout{font-size:11px;top:5%;left:76%;width:23%;line-height:1.3}
  .capacity-readout strong{font-size:19px;line-height:1.4}.capacity-readout strong small{font-size:11px}
  .readout{font-size:13px}.energy-readout{width:24%}
  .goal-note{font-size:11px;line-height:1.35;white-space:normal}
  .organic-goal{top:calc(100% + 4px);width:46%}
  .cycle-counter{top:calc(100% + 7px);bottom:auto;right:0;font-size:11px;letter-spacing:0}
  .cycle-counter b{font-size:23px}.cycle-counter span{font-size:12px}
  .parts{top:calc(100% + 12px);bottom:auto;width:100%;display:flex;justify-content:center;gap:8px}
  .part{font-size:13px;min-height:42px;padding:10px 12px}
  .preview-tag{font-size:10px;bottom:0}
  .process-control{left:0;top:calc(100% + 48px);width:100%;min-height:96px;transform:none;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 12px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-left:3px solid var(--wine);border-radius:4px;background:var(--paper)}
  .process-control.breakdown-control{left:0;top:calc(100% + 156px);border-left-color:var(--olive)}
  .process-control::before{content:'Tổng hợp';grid-column:1;grid-row:1;font-size:15px;font-weight:600;color:var(--wine)}
  .breakdown-control::before{content:'Phân giải';color:var(--olive)}
  .process-control .requested{grid-column:2;grid-row:1;min-width:0}
  .requested label{font-size:13px;gap:8px;line-height:1.4}
  .process-control .actual{grid-column:1;grid-row:2;font-size:13px;gap:8px;min-width:0}
  .actual>i{min-width:20px;max-width:70px;height:4px}
  .process-control .experiment-button{grid-column:2;grid-row:2;font-size:13px;min-height:44px;padding:8px 5px;margin:0;width:100%;white-space:normal;line-height:1.25}
  body:not([data-mode=experiment]):not([data-mode=challenge]) .process-control .actual{grid-column:2;grid-row:1}
  body[data-mode=challenge] .process-control .requested{grid-column:2;grid-row:1 / span 2}
  body[data-mode=challenge] input[type=range]{height:22px;margin:9px 0 4px}
  body[data-mode=challenge] .process-control .actual{grid-column:1;grid-row:2}
  .phase-strip,body[data-mode=challenge] .phase-strip{margin:16px 0 0}
  .phase-strip li{font-size:11px;gap:4px}.phase-strip li b{font-size:18px}
  .causal-chain,body[data-mode=challenge] .causal-chain{margin-top:16px;font-size:12px;gap:7px;flex-wrap:wrap;line-height:1.5}
  .causal-chain span{gap:4px}.causal-chain b{font-size:20px}
  .actionbar,body[data-mode=challenge] .actionbar{margin-top:16px;min-height:112px;padding:16px 4px}
  .causal-chain+.actionbar,.phase-strip:not([hidden])~.actionbar,
  body[data-mode=challenge] .phase-strip:not([hidden])~.actionbar,
  body[data-mode=challenge] .causal-chain:not([hidden])+.actionbar{margin-top:12px}
  .action-copy p{font-size:14px;line-height:1.5}.primary,.secondary{font-size:13px;min-height:44px;padding:11px 16px}
  .action-buttons{flex-wrap:wrap}
  #enzyme-cue,.enzyme-cue{left:77%;top:42%;max-width:23%;font-size:11px;padding:4px 5px;line-height:1.25}
  footer{font-size:10px}.text-button{font-size:11px;line-height:1.4}
}
@media(max-width:680px){
  .masthead{height:64px}
  .chapters{position:absolute;top:76px;left:50%;transform:translateX(-50%);white-space:nowrap}
  .mission{padding-top:50px;min-height:146px}
}
@media(max-width:480px){
  .masthead{height:64px}.brand{font-size:11px}.brand strong{font-size:17px}.brand-mark{font-size:29px}
  .chapters{top:76px;font-size:11px}.chapters b{font-size:11px}
  .mission{padding-top:50px;min-height:146px}h1{font-size:26px}
  #hint{font-size:13px;line-height:1.4}.eyebrow{font-size:10px}
  .module-label{width:126px}.module-label strong{font-size:17px}.module-label small{display:none}
  .capacity-readout{font-size:11px}.raw-value{font-size:11px}
  .port{font-size:12px}.organic-port{font-size:12px}.readout{font-size:13px}
  .goal-note{font-size:11px}.requested label,.actual{font-size:13px}
}