:root{--ink:#202b41;--muted:#5f6f85;--line:#ccd6e4;--blue:#235bd6;--paper:#f2f5fa;--mint:#207969;--white:#fff;font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--paper);font-size:16px}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:1480px;margin:auto;padding:28px 40px}header{padding-top:30px;padding-bottom:12px}.brand{text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:.14em;font-size:13px}.brand span{float:right;color:var(--blue);font-size:11px}.hero{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:38px 0 24px}.hero>p{max-width:350px;color:var(--muted);line-height:1.8}h1{font-size:clamp(36px,4.1vw,62px);letter-spacing:-.045em;line-height:1.04;margin:12px 0}h2{font-size:26px;letter-spacing:-.025em;margin:10px 0 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.15s}button:hover,.file:hover{background:#e8effd;border-color:#9ab3e7}button:disabled{opacity:.5;cursor:default}.primary{background:var(--blue);border-color:var(--blue);color:white}.primary:hover{background:#1847b1;color:white}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #e39c30;outline-offset:3px}input,select,textarea{font:inherit;font-size:14px;max-width:100%;border:1px solid var(--line);border-radius:6px;background:white;padding:9px;color:var(--ink)}input[type=number]{width:105px}textarea{width:100%;resize:vertical;line-height:1.55;font-size:12px}label{font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:6px}label.file{color:var(--ink);display:inline-flex;position:relative;overflow:hidden;justify-content:center}input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}nav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}nav button{padding:15px 10px;background:transparent;text-align:left}nav button.active{background:var(--ink);border-color:var(--ink);color:white}nav button span{font-size:10px;display:block;margin-bottom:7px;opacity:.65}main{padding-top:12px}.panel{background:white;border:1px solid var(--line);border-radius:14px;padding:24px;margin:18px 0;box-shadow:0 4px 20px #20345003}.projectbar{display:flex;align-items:end;gap:18px;flex-wrap:wrap}.projectbar #saved{margin-left:auto;max-width:180px}.lesson{display:grid;grid-template-columns:.85fr 1.4fr;gap:50px;padding:22px 0}.lesson>div:first-child{padding-top:8px}.taskbox{background:#e9eef7;border-radius:14px;padding:24px}.tasktabs{display:flex;gap:8px}.tasktabs button{width:42px;height:37px;padding:0}.tasktabs .active{background:var(--blue);color:white}.tasktabs .done:after{content:' ✓';font-size:10px}.taskbox p{font-size:14px}.controls{padding:15px 0 2px}.controls 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var(--blue);padding-left:16px;font-size:14px;min-height:24px}.rail{border:1px solid #c8d2df;background:linear-gradient(#e2e9f1,#f7f9fb 12%,#e4eaf2);border-radius:10px;padding:12px;box-shadow:inset 0 -3px 5px #a7b9cc3b}.railcaption{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--muted)}.railcaption label{flex-direction:row;align-items:center}.railcaption input{width:80px;padding:5px}.tape{display:grid;grid-template-columns:repeat(24,minmax(22px,1fr));gap:5px;padding:20px 4px 8px;overflow:auto}.tapecell{text-align:center;position:relative;min-width:22px}.tapecell small{display:block;font-size:8px;margin-top:7px}.tapecell.head:before{content:'▼';position:absolute;left:0;right:0;top:-17px;color:var(--blue);font-size:13px}.workspace{display:grid;grid-template-columns:minmax(240px,1fr) minmax(250px,.9fr);gap:38px;margin-top:18px}.board{--cols:20;display:grid;grid-template-columns:repeat(var(--cols),1fr);gap:3px;background:#d9e1ec;padding:12px;border:1px solid #bdcbdc;border-radius:9px;max-width:640px;aspect-ratio:1;box-shadow:inset 0 2px 7px #2f4a6820}.board .chip{width:100%;height:100%;min-width:0;min-height:0;padding:0}.chip{display:inline-block;position:relative;width:28px;height:28px;aspect-ratio:1;border-radius:50%;border:1px solid #a8b3c2;background:radial-gradient(ellipse at 35% 24%,#fff 5%,#f3f5f8 54%,#d7dfeb 96%);box-shadow:0 2px 0 #a6b2c1,0 3px 3px #354e6429,inset 0 1px 2px white;transform:rotateX(3deg);transition:box-shadow .2s;vertical-align:middle}.chip.black{border-color:#172137;background:radial-gradient(ellipse at 34% 25%,#5d687d 0%,#29354a 30%,#141e30 77%,#263449 100%);box-shadow:0 2px 0 #0c1424,0 3px 4px #243b5647,inset 0 1px 2px #8799b455}.chip:hover{filter:brightness(1.08)}button.chip{font-size:0}.chip.head{outline:3px solid #2465e1;outline-offset:1px;z-index:2}.chip.neighbor{outline:2px solid #30a48b;outline-offset:1px}.chip.selected{outline:3px solid #d08d24;outline-offset:1px}.chip.flipping{animation:flip .5s ease-in-out}.chip.symbol{font-size:19px;color:var(--ink);text-align:center;line-height:44px}.chip.empty{background:transparent;border:1px dashed #acbacb;box-shadow:none;transform:none}.chip.empty:after{content:'·';color:#8695a9}.chip.black.symbol{color:white}@keyframes flip{0%{transform:rotateX(3deg);background:var(--old-face,#e7edf5)}44%{background:var(--old-face,#e7edf5)}45%{transform:rotateX(88deg);filter:brightness(.55)}100%{transform:rotateX(183deg)}}.miniature{width:180px;gap:1px;padding:5px;max-height:280px}.glyphboard{--cols:8;aspect-ratio:1/2;width:220px;gap:4px;margin:16px 0}.programrows{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:white}.programrow{display:grid;grid-template-columns:55px 1fr 70px 70px;padding:9px 12px;font:12px ui-monospace,monospace;border-bottom:1px solid #e6ebf2}.programrow.active{background:#e3ecfd;border-left:3px solid var(--blue);padding-left:9px}.programrow:last-child{border:0}.programrow.heading{color:var(--muted);font-size:10px}.maplabel{padding:12px 0;color:var(--mint);font-size:13px;min-height:38px}details{margin:14px 0}summary{cursor:pointer;font-size:13px;font-weight:700;padding:7px 0}details p{font-size:13px}#map{max-height:220px;overflow:auto;font-size:12px}#map div{padding:8px 0;border-bottom:1px solid #edf0f5}.screen{display:flex;gap:16px;overflow:auto;padding:12px 0}.screenglyph{flex:0 0 96px;cursor:pointer}.screenglyph .board{--cols:8;aspect-ratio:1/2;gap:1px;padding:5px}.screenglyph small{display:block;text-align:center;margin-top:10px;font-size:10px}.atlaslayout{display:grid;grid-template-columns:1fr 1fr;gap:35px}.atlaslayout>div{min-width:0}#glyphBits{max-width:440px}#flags{font-size:13px;overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}td,th{text-align:left;padding:10px;border-bottom:1px solid var(--line)}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;max-height:320px;overflow:auto}#message{position:sticky;top:0;z-index:10;background:#e0ecff;border-radius:8px;padding:0 16px;line-height:2.4;font-size:13px}#message:empty{display:none}.nextbar{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:20px 0}footer{color:var(--muted);font-size:11px;padding-bottom:35px}.hidden,[hidden]{display:none!important}.doc{max-width:960px;background:white;margin:20px auto;padding:45px;line-height:1.7;border:1px solid var(--line);border-radius:12px}.doc h2{margin-top:42px}.doc code{background:#eff3fa;padding:2px 5px}.doc .formula{font-family:Georgia,serif;font-size:23px;padding:20px;border-left:3px solid var(--blue);background:#f4f7fc}.turingtape{display:flex;gap:12px;overflow:auto;padding:55px 10px 24px}.turingtape .tapecell{flex:0 0 54px}.turingtape .chip{width:46px;height:44px;transform:rotateX(18deg)}.turingtape .tapecell.head:before{content:'HEAD ▼';top:-28px;font-size:10px}.turingtable .active{background:#e0ebff}.turing-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}.formula small{display:block;font:13px Arial;margin-top:15px}.historyquote{font:italic 21px Georgia,serif;border-left:3px solid #9bacbf;padding-left:18px;color:#4d6080}.figure-img{max-width:100%;border:1px solid var(--line)}.toc{columns:2;line-height:2}
@media(max-width:850px){header,main,footer{padding-left:20px;padding-right:20px}.hero{align-items:start}.hero>p{max-width:220px;font-size:13px}.workspace{gap:22px;grid-template-columns:1fr 1fr}.lesson{gap:25px;grid-template-columns:.8fr 1.2fr}.controller{padding:15px}.controller>div{padding:0 8px}.eyebrow{font-size:9px}.command{font-size:17px}.sensor{font-size:23px}.tape{gap:3px}.turing-layout{grid-template-columns:1fr}}
@media(max-width:620px){header,main,footer{padding-left:14px;padding-right:14px}.brand{font-size:10px;letter-spacing:.08em}.brand span{font-size:9px}.hero{display:block;padding:24px 0 20px}.hero>p{max-width:none;line-height:1.5}.hero h1{font-size:40px}nav{grid-template-columns:repeat(5,minmax(0,1fr));gap:3px}nav button{font-size:10px;padding:10px 4px}nav button span{font-size:8px}.links{gap:12px;font-size:11px}.lesson,.workspace,.atlaslayout{grid-template-columns:1fr;gap:18px}.panel,.taskbox{padding:16px}.lesson{padding-top:12px}.projectbar{align-items:stretch}.projectbar label{width:100%}.projectbar .row label{width:auto}.projectbar #saved{margin-left:0;max-width:none}.controller{grid-template-columns:1fr 1fr;gap:18px}.controller>div:nth-child(2){border:0}.controller>div:last-child{grid-column:1/-1;border-top:1px solid var(--line);padding-top:12px}.exits{display:inline-block;margin-right:8px;font-size:12px}.machine h2{font-size:20px}.badge{font-size:8px}.board{gap:2px;padding:7px}.chip{box-shadow:0 1px 0 #a6b2c1,0 2px 2px #354e6429}.tape{grid-template-columns:repeat(24,26px);padding-left:4px}.nextbar{display:block}.doc{padding:24px 18px;margin:12px}.doc .formula{font-size:18px}.glyphboard{width:210px;gap:4px}.programrow{grid-template-columns:45px 1fr 64px 64px;padding:9px 7px}.miniature{width:145px}.toc{columns:1}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}@media print{header nav,.links,.projectbar,button,.file,footer,details{display:none}.doc{margin:0;padding:0;border:0}.doc h2{break-before:page}.taskbox{break-inside:avoid}body{background:white}}
/* The tape marker is a small physical head, viewed almost from above. */
.tape{padding-top:43px}.tape .tapecell.head:before{content:'';width:28px;height:22px;left:50%;right:auto;top:-33px;transform:translateX(-50%);border:1px solid #8c9eb7;border-radius:5px 5px 8px 8px;background:radial-gradient(circle at 50% 58%,#70ccdb 0 3px,#234566 4px 6px,transparent 7px),linear-gradient(115deg,#eef3fa,#aebfd4 60%,#d2dfed);box-shadow:0 3px 3px #24446729}.tape .tapecell.head:after{content:'';position:absolute;width:2px;height:9px;top:-10px;left:50%;background:#507da9}.turingtape .tapecell.head:before{content:'HEAD';width:58px;height:28px;line-height:27px;left:-2px;top:-36px;border:1px solid #91a2bb;border-radius:7px;background:linear-gradient(120deg,#fff,#b4c4d9);box-shadow:0 3px 6px #33496433;color:#285ba2;font-size:10px;letter-spacing:.1em}.turingtape .tapecell.head:after{content:'';position:absolute;left:27px;top:-8px;width:2px;height:9px;background:#6589b1}

.formula{overflow-x:auto}.doc pre{max-height:none}.doc .taskbox{margin:18px 0}
/* 3.1: a visible circuit and an actual writing desk. */
.hero{padding:22px 0 16px}.hero h1{font-size:clamp(34px,3.8vw,52px)}.lesson{grid-template-columns:.75fr 1.5fr;gap:34px}.phasebar{display:flex;gap:6px;margin:10px 0 22px}.phasebar span{flex:1;padding:10px 8px;text-align:center;border:1px solid #d0dbea;border-radius:7px;color:#67758b;background:#f7f9fc;font-size:11px}.phasebar .active{background:#dfeafe;color:#204e9c;border-color:#729be2;font-weight:700}.phasebar [data-phase=act].active{background:#fff0d7;color:#915409;border-color:#e3ad56}.phasebar [data-phase=choose].active{background:#ddf1ea;color:#185c4e;border-color:#74b5a3}.mechanism-deck{position:relative;display:grid;grid-template-columns:minmax(290px,.82fr) minmax(400px,1.18fr);gap:72px;align-items:start;margin-top:12px}.machine-wires{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:3;overflow:visible}.wire{fill:none;stroke-width:2;opacity:.38}.wire.program{stroke:#386ed1}.wire.read{stroke:#278b76}.wire.act{stroke:#ce8a24}.wire.next{stroke:#9160bd}.arrow.program{fill:#386ed1}.arrow.read{fill:#278b76}.arrow.act{fill:#ce8a24}.arrow.next{fill:#9160bd}.machine[data-phase=read] .wire.program,.machine[data-phase=read] .wire.read,.machine[data-phase=choose] .wire.read,.machine[data-phase=act] .wire.act,.machine[data-phase=next] .wire.next{opacity:1;stroke-width:3;stroke-dasharray:8 5;animation:signal .6s linear infinite}@keyframes signal{to{stroke-dashoffset:-26}}.port{position:absolute;width:9px;height:9px;border:2px solid white;border-radius:50%;z-index:5}.port.program{background:#386ed1}.port.read{background:#278b76}.port.act{background:#ce8a24}.port.next{background:#9160bd}.reader-cabinet,.data-cabinet{min-width:0}.reader-cabinet h3{margin:4px 0 12px}.head-badge{font:12px ui-monospace,monospace;color:#215bb4;border:1px solid #bccde2;background:#eaf0f9;border-radius:5px;padding:6px 8px}.reader-glass{position:relative;border:1px solid #b7c7da;border-radius:10px;padding:6px 6px 6px 28px;background:linear-gradient(110deg,#dbe5f1,#f8fafd);box-shadow:inset 0 2px 6px #37587a15}.reader-glass .programrows{border:0;border-radius:6px;box-shadow:0 1px 8px #1c365814;overflow:hidden}.reader-needle{position:absolute;left:9px;top:calc(50% - 9px);font-size:16px;color:#235bd6;z-index:4}.reader-glass #programPort{right:-5px;top:calc(50% - 4px)}.reader-glass #programReturnPort{right:-5px;top:calc(50% + 18px)}.programrow{height:29px;padding:6px 9px;grid-template-columns:65px 1fr 68px 68px;font-size:11px;white-space:nowrap}.programrow.blank{opacity:.12}.programrow.active{border:1px solid #8bacdf;background:#dceaff;font-weight:700;padding:5px 8px;box-shadow:inset 0 0 7px #78a2d630}.reader-caption{font-size:11px;color:#61728b;margin:10px 0;line-height:1.5}.processor{position:relative;padding:16px 20px 18px;border:1px solid #9fb2cd;border-radius:12px;background:linear-gradient(130deg,#eef3f9,#dee7f2);box-shadow:inset 0 2px 2px white,0 6px 12px #283c5710}.processor #instructionPort{left:-5px;top:70px}.processor #readPort{bottom:-5px;left:30%}.processor #actionPort{bottom:-5px;left:72%}.processor #nextPort{left:-5px;bottom:25px}.processor .eyebrow{margin:0}.processor .opchips .chip{width:19px;height:19px}.rule-layout{display:grid;grid-template-columns:1fr 120px;gap:12px;align-items:start}.processor .command{font-size:19px;margin:13px 0}.operation-rule{font:24px Georgia,serif;letter-spacing:.02em}.processor .sensor{margin-top:14px;gap:12px;font-size:25px}.processor .sensor .chip{width:40px;height:40px}.processor .exits{display:inline-block;font-size:12px;padding:7px 11px;margin:4px 6px 0 0}.processor #ruleReading{font-size:11px;line-height:1.45;margin:7px 0 10px}.data-cabinet .rail{margin-top:56px;position:relative}.data-cabinet .tape{grid-template-columns:repeat(16,minmax(20px,1fr));gap:4px}.data-cabinet .tapecell .chip{width:100%;height:auto}.data-cabinet .tapecell.head:before,.data-cabinet .tapecell.head:after{display:none}.data-dock{position:absolute;left:50%;top:-34px;transform:translateX(-50%);width:32px;height:23px;border:1px solid #859bb8;border-radius:5px 5px 8px 8px;background:radial-gradient(circle at 50% 56%,#88d9d5 0 3px,#345b7a 4px 6px,transparent 7px),linear-gradient(110deg,#f4f8ff,#adc0d8);box-shadow:0 3px 3px #3048632b;z-index:4}.data-dock:after{content:'';position:absolute;width:3px;height:12px;left:14px;bottom:-13px;background:#6b8dad}.data-dock .port.read{left:1px;top:-5px}.data-dock .port.act{right:1px;top:-5px}.machine[data-phase=act] .data-dock{box-shadow:0 0 0 4px #edb55c3d,0 3px 4px #3048632b}.machine[data-phase=read] .data-dock{box-shadow:0 0 0 4px #48b5a735,0 3px 4px #3048632b}.wire-legend{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;font-size:10px;margin:16px 0 26px}.wire-legend span:before{content:'— ';font-weight:900;font-size:17px}.wire-legend .program{color:#386ed1}.wire-legend .read{color:#278b76}.wire-legend .act{color:#ab721b}.wire-legend .next{color:#885cb0}.workspace{grid-template-columns:minmax(250px,.7fr) minmax(460px,1.3fr);gap:30px;border-top:1px solid #d0dceb;padding-top:20px;align-items:start}.drawing-pair{display:grid;grid-template-columns:1fr 1fr;gap:15px}.drawing-pair .board{padding:10px;gap:6px;width:100%;max-width:240px;max-height:none}.drawing-pair h4{margin:8px 0 13px}.drawing-cabinet.large-grid .drawing-pair{grid-template-columns:1fr}.drawing-cabinet.large-grid .board{max-width:600px;gap:2px;padding:9px}.drawing-cabinet.large-grid #target{max-width:130px}.drawing-cabinet:not(.large-grid) .board .chip{box-shadow:0 2px 0 #9fabbb,0 4px 4px #354e6425,inset 0 1px 1px white}.drawing-cabinet:not(.large-grid) .board .chip.black{box-shadow:0 2px 0 #0c1424,0 4px 4px #354e6450,inset 0 1px 2px #91a8bd44}.drawing-cabinet .chip.mismatch{outline:2px dashed #d69334;outline-offset:1px}.editor-cabinet{min-width:0}.editor-cabinet h3{margin:8px 0}.editor-cabinet #editor{margin:0}.editor-toolbar{padding:10px 0}.editor-toolbar label{font-size:10px}.editor-toolbar button{padding:7px 11px}.checklabel{flex-direction:row;align-items:center}.command-insert{display:flex;align-items:center;gap:7px;flex-wrap:wrap;padding:10px 0 13px;font-size:11px}.command-insert button{font:12px ui-monospace,monospace;padding:8px 12px}.command-insert label{flex-direction:row;align-items:center;font-size:11px}.command-insert input{width:72px;padding:6px}.command-insert .muted{font-size:10px;margin-left:auto}.source-shell{display:flex;position:relative;border:1px solid #b6c6dc;border-radius:9px;overflow:hidden;background:#fbfdff}.source-gutter{width:56px;flex-shrink:0;font:12px/24px ui-monospace,monospace;color:#8090a6;background:#eaf0f8;padding:16px 8px 16px 0;text-align:right;overflow:hidden;white-space:pre;user-select:none}.source-gutter .current{color:#245bd6;font-weight:800}.source-content{position:relative;min-width:0;flex:1;overflow:hidden}.source-content #source{display:block;position:relative;z-index:2;min-height:540px;height:540px;max-height:85vh;margin:0;border:0;border-radius:0;background:transparent;white-space:pre;padding:16px 14px;font:14px/24px ui-monospace,SFMono-Regular,Consolas,monospace;resize:vertical;tab-size:2;overflow:auto;color:#223756}.source-marker{position:absolute;left:0;right:0;height:24px;background:#dfeaff;box-shadow:inset 3px 0 #235bd6;pointer-events:none;z-index:1}.editor-info{font:11px/1.6 ui-monospace,monospace;color:#53708d;min-height:18px}.editor-info.dirty{color:#9a650f}.source-shell:focus-within{border-color:#527dc8;box-shadow:0 0 0 2px #235bd617}#workspaceDialog{width:calc(100vw - 36px);max-width:1800px;height:calc(100vh - 36px);max-height:none;padding:20px;border:1px solid #aebfd8;border-radius:14px;color:#20324b;background:#f7faff;box-shadow:0 30px 90px #10203b80}#workspaceDialog::backdrop{background:#162a4599;backdrop-filter:blur(3px)}.dialogbar{display:flex;justify-content:space-between;gap:20px;align-items:center;padding-bottom:14px}.dialogbar strong{font-size:14px}#workspaceDialog .workspace{margin:0;padding-top:12px;grid-template-columns:minmax(240px,.55fr) minmax(500px,1.45fr);gap:32px}#workspaceDialog #source{height:calc(100vh - 490px);min-height:250px;max-height:none}#workspaceDialog .drawing-cabinet{max-height:calc(100vh - 150px);overflow:auto}#workspaceDialog #expandEditor{display:none}.board .chip.head{outline-color:#278b76}.programrow.flash{animation:rowEnter .3s ease-out}@keyframes rowEnter{from{transform:translateY(20px);opacity:.45}to{transform:translateY(0);opacity:1}}
@media(max-width:1050px){.mechanism-deck{grid-template-columns:.8fr 1.2fr;gap:36px}.programrow{grid-template-columns:50px 1fr 50px 50px;font-size:10px}.workspace{grid-template-columns:minmax(210px,.6fr) minmax(380px,1.4fr);gap:20px}.drawing-pair{gap:10px}.drawing-pair .board{padding:7px;gap:4px}.source-content #source{font-size:13px}}
@media(max-width:750px){.mechanism-deck{grid-template-columns:1fr;gap:24px}.reader-cabinet{max-width:none}.reader-glass{max-height:255px;overflow:hidden}.reader-glass .programrows{transform:translateY(-33px)}.reader-needle{top:calc(50% - 13px)}.reader-glass #programReturnPort{top:calc(50% - 31px)}.machine-wires{display:none}.processor #instructionPort,.processor #nextPort{display:none}.data-cabinet .rail{margin-top:30px}.workspace{grid-template-columns:1fr;gap:20px}.drawing-pair{max-width:390px;gap:25px}.drawing-cabinet.large-grid .drawing-pair{max-width:none}.source-content #source{min-height:460px;height:460px}.phasebar{flex-wrap:wrap}.phasebar span{flex:1 1 40%}.wire-legend{gap:10px;justify-content:start}.lesson{grid-template-columns:1fr;gap:18px}.processor{padding:16px}.operation-rule{font-size:23px}.rule-layout{grid-template-columns:1fr 95px}.data-cabinet .tape{grid-template-columns:repeat(16,25px)}#workspaceDialog{width:100vw;height:100vh;padding:12px;border-radius:0}#workspaceDialog .workspace{grid-template-columns:1fr}#workspaceDialog .drawing-pair{max-width:240px}#workspaceDialog .dialogbar{align-items:start;flex-direction:column;gap:8px}#workspaceDialog .drawing-cabinet{max-height:none}#workspaceDialog #source{height:60vh}.source-gutter{width:40px;font-size:10px}.source-content #source{font-size:12px;padding-left:10px}.command-insert .muted{display:none}.programrow{grid-template-columns:55px 1fr 70px 70px;font-size:12px}.editor-toolbar{gap:7px}.reader-cabinet .maplabel{display:none}}
.tm-deck{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;position:relative;align-items:start}.tm-table-shell{position:relative;margin:0!important;min-width:0;padding:14px!important}.tm-table-shell #tmTablePort{right:-5px}.tm-table-shell #tmReturnPort{right:-5px}.tm-table-shell td,.tm-table-shell th{font-size:11px;padding:10px 7px}.tm-table-shell p{font-size:11px}.tm-right{min-width:0}.tm-processor{position:relative;grid-template-columns:1fr 1fr;padding:18px!important;gap:10px}.tm-processor>div{border:0!important}.tm-processor>div:last-child{grid-column:1/-1}.tm-processor #tmRulePort{left:-5px;top:50px}.tm-processor #tmReadPort{bottom:-5px;left:30%}.tm-processor #tmActionPort{bottom:-5px;left:65%}.tm-processor #tmNextPort{left:-5px;bottom:20px}.tm-right .rail{margin-top:45px}.tm-data-ports{position:absolute;top:-36px;left:10px;width:36px;height:9px}.tm-data-ports .read{left:0;top:0}.tm-data-ports .act{right:0;top:0}.tm-right .turingtape{padding-top:50px;gap:9px}.tm-right .turingtape .tapecell{flex-basis:45px}.turing-layout{display:block}.turing-layout #tmSource{min-height:350px;font-size:14px;line-height:1.7}.turing-layout .panel{max-width:none}.source-shell{align-items:start}.source-gutter{flex-grow:0}.source-shell:has(#source){min-width:0}
@media(max-width:950px){.tm-deck{grid-template-columns:1fr;gap:20px}.tm-deck .machine-wires{display:none}.tm-table-shell .port,.tm-processor .port{display:none}.tm-table-shell{order:2}.tm-right{order:1}}

#workspaceDialog{overflow:auto}.dialogbar{position:sticky;top:-20px;z-index:6;background:#f7faff}.source-content{width:100%}
/* 3.2: actions first; their binary records open on demand. */
.inside-switch{flex-direction:row;align-items:center;gap:10px;padding:10px 14px;border:1px solid #bdcfe8;border-radius:24px;background:#f4f8ff;color:#2858a4;font-size:12px;cursor:pointer}.inside-switch input{accent-color:#235bd6}.reader-glass{padding:9px 9px 9px 29px}.reader-glass .programrows{transform:none}.reader-glass .programrow.card-row{height:52px;display:flex;align-items:center;gap:12px;padding:8px 12px;white-space:nowrap;border:0;border-bottom:1px solid #edf1f7;border-left:3px solid transparent;font-size:14px}.reader-glass .card-row.active{background:#e4efff;border-left-color:#235bd6;box-shadow:inset 0 0 0 1px #a9c4ec}.card-row.blank{background:repeating-linear-gradient(0deg,transparent,transparent 25px,#f5f8fc 26px);opacity:.5}.card-row[role=button]{cursor:pointer}.card-row[role=button]:hover{background:#eaf3ff}.card-row:focus-visible{outline:3px solid #d69c3f;outline-offset:-3px}.card-icon{width:24px;text-align:center;font:25px Arial;color:#52739c}.card-row strong{font:600 14px ui-monospace,monospace}.card-repeat{color:#286bb9;min-width:20px;font:600 14px ui-monospace,monospace}.card-row small{margin-left:auto;font-size:10px}.card-row .card-code{margin-left:auto}.card-code .chip{width:13px;height:13px}.card-controls{margin:12px 0 0;gap:10px}.card-controls button{font-size:11px;padding:8px 10px}.card-controls .muted{font-size:10px}.reader-needle{top:calc(50% - 10px)}.reader-glass #programPort{top:calc(50% - 4px)}.reader-glass #programReturnPort{top:calc(50% + 15px)}.repeat-meter{background:#eaf2ff;border:1px solid #c6d9f3;border-radius:8px;padding:12px 14px;margin:14px 0}.repeat-meter p{font:12px ui-monospace,monospace;margin:0 0 9px}.repeat-marks{display:flex;gap:6px;flex-wrap:wrap}.repeat-marks span{display:flex;align-items:center;justify-content:center;min-width:23px;height:23px;border-radius:50%;border:1px solid #c1cfe1;color:#8191a8;background:#fff;font-size:10px}.repeat-marks .done{background:#c0dbfa;border-color:#7da4d6;color:#1b4c8b}.repeat-marks .current{outline:2px solid #235bd6;outline-offset:2px;color:#235bd6;font-weight:700}.repeat-meter small{display:block;margin-top:10px}.encoding-panel{padding:16px;margin:16px 0;border:1px solid #b8cce9;background:#f5f9ff;border-radius:10px}.encoding-panel .eyebrow{margin:0 0 12px;line-height:1.8}.encoded-field{padding:9px;border-left:3px solid transparent;border-bottom:1px solid #e3ebf7}.encoded-field>span{display:block;font-size:10px;color:#5d7190;margin-bottom:8px}.encoded-field.chosen{background:#e2f1ea;border-left-color:#2c8d76}.encoded-field.unused{opacity:.45}.bit-strip{display:flex;align-items:center;flex-wrap:wrap;gap:5px;min-width:0}.bit-strip .chip{width:19px;height:19px;flex:none}.card-code.bit-strip .chip{width:13px;height:13px}.encoding-panel p.muted{font-size:11px;line-height:1.7;margin-bottom:0}.processor{padding:20px}.reader-windows{display:grid;grid-template-columns:1.15fr 1fr;gap:15px;margin-top:15px}.head-window{border:1px solid #bacbe0;background:#f7faff;border-radius:9px;min-width:0;padding:14px;box-shadow:inset 0 2px 5px #3457780c}.sensor-window{background:#f3faf7;border-color:#bad7cd}.head-window .eyebrow{font-size:8px;letter-spacing:.11em}.head-window .command{font-size:24px;margin:14px 0 5px}.head-window .muted{font-size:12px}.head-window .sensor{margin:14px 0 0;gap:13px;font-size:22px}.head-window .sensor .chip{width:42px;height:42px}.action-lane{display:flex;align-items:center;gap:18px;min-height:94px;padding:15px 0}.action-lane p{font-size:13px;line-height:1.5;margin:0;max-width:330px}.action-pictogram{display:flex;align-items:center;justify-content:center;gap:10px;min-width:110px;font:25px Arial;color:#47688f}.action-pictogram .chip{width:29px;height:29px}.action-arrow{font-size:39px;color:#375b85;line-height:1}.action-pictogram[data-op=HALT] .action-arrow{font-size:25px}.route-list{display:flex;gap:8px;flex-wrap:wrap;border-top:1px solid #c5d3e5;padding-top:13px}.route{display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid #c4d1e3;border-radius:6px;font-size:12px;background:#f4f7fb;color:#728198}.route.chosen{background:#def0e9;border-color:#85b7a9;color:#1a6150}.route .chip{width:18px;height:18px}.route.stop{background:#e8edf3;color:#3c536b}.head-principle{font-size:10px;line-height:1.65;margin:14px 0 0;color:#60728c}.processor #instructionPort{top:103px}.processor #nextPort{bottom:56px}.processor #readPort{left:75%}.processor #actionPort{left:28%}.data-cabinet .rail{margin-top:50px}.machine[data-tempo=medium] .flipping{animation-duration:.18s}.machine[data-tempo=slow] .flipping{animation-duration:.42s}.machine[data-phase=act] .action-pictogram{color:#ba7824}.phasebar{margin-bottom:20px}.repeat-lesson{margin:12px 0;background:#f1f6fd;border-left:3px solid #a5bfdf;padding:12px 15px}.repeat-lesson p{font-size:12px;line-height:1.8;margin:0 0 10px}.repeat-lesson strong{font-weight:600}.repeat-lesson code{font-size:11px}.repeat-lesson button{font-size:11px;padding:7px 11px}.address-help{margin:6px 0}.address-help summary{font-size:11px;color:#607492}.address-help p{font-size:12px}.dialogbar label{font-size:10px}.dialogbar select{padding:8px;font-size:12px}#workspaceDialog #source{height:calc(100vh - 590px);min-height:220px}.reader-cabinet .maplabel:empty{display:none}.tm-right details .formula{font-size:16px;padding:10px 0}.tm-right .reader-windows{margin:0}
@media(max-width:1050px){.reader-windows{gap:8px}.head-window{padding:11px}.head-window .command{font-size:21px}.head-window .eyebrow{font-size:7px}.reader-glass .programrow.card-row{gap:7px;padding-left:7px}.card-row strong{font-size:12px}.inside-switch{font-size:10px}.action-pictogram{min-width:90px;gap:7px}}
@media(max-width:750px){.reader-glass{max-height:none;overflow:visible}.reader-glass .programrows{transform:none}.mechanism-deck{gap:24px}.reader-windows{grid-template-columns:1fr 1fr;gap:12px}.head-window .eyebrow{font-size:8px}.head-window .command{font-size:22px}.processor{padding:16px}.inside-switch{font-size:11px}.card-row strong{font-size:14px}.action-pictogram{min-width:95px}.action-lane{gap:12px}.route{font-size:11px}.repeat-lesson code{overflow-wrap:anywhere}.inside-open .card-row{gap:6px}.inside-open .card-row strong{font-size:12px}#workspaceDialog #source{height:55vh;min-height:300px}.card-code.bit-strip .chip{width:13px;height:13px}}

#workspaceDialog #source{height:calc(100vh - 665px)}.data-cabinet .railcaption{padding-top:12px;border-top:1px solid #c5d1df;margin-top:8px}.data-cabinet .tape{padding-top:43px}.data-cabinet .rail{padding-top:12px}@media(max-width:750px){#workspaceDialog #source{height:55vh}}

/* 3.3: the field and its playback controls stay together. */
.field-controls{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 16px;padding:12px;border:1px solid #c7d7ed;border-radius:10px;background:#f1f6fd}.field-controls button{padding:9px 12px}.field-controls label{font-size:10px}.field-controls select{padding:8px 10px}.life-studio{padding:24px 30px}.life-studio h2{margin:5px 0 12px}.life-studio .eyebrow{margin:0}.life-topology{font:12px ui-monospace,monospace;color:#496787;border:1px solid #cedbec;border-radius:20px;padding:8px 12px}.life-observation{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(290px,.8fr);gap:32px;align-items:start;margin-top:12px}.life-console{display:flex;flex-direction:column;gap:12px;min-width:0}.life-counter{display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}.life-counter>span:first-child{font-size:10px;letter-spacing:.12em;color:#536e8f}.life-counter strong{font-size:38px;line-height:1;font-variant-numeric:tabular-nums;color:#2258b2}.life-counter>span:last-child{font-size:12px;color:#506982}.life-playback{display:flex;gap:8px;flex-wrap:wrap}.life-playback button{padding:11px 13px}.life-playback #lifeHundred{flex:1 1 185px}.life-console .life-series-status{margin:0;font-size:12px;line-height:1.6;min-height:20px;color:#285589}.life-console progress{width:100%;height:7px;accent-color:#235bd6}.life-console>label{flex-direction:row;align-items:center;gap:12px;font-size:11px}.life-console select{padding:8px 10px}.life-playback-note,.life-metrics{font-size:11px;line-height:1.6;margin:0}.life-console details{margin:0;padding-top:10px;border-top:1px solid #d4dfee;font-size:12px}.life-console details .row{padding-top:12px}.life-console pre{max-height:250px;overflow:auto}.life-studio #field{width:min(100%,52vh,520px);margin:0 auto;max-width:none}.life-studio .drawing-pair{max-width:none}.life-studio .drawing-pair h4{display:none}.life-studio #fieldTitle{font-size:15px}.life-studio #fieldHint{display:none}.life-studio #cellCoordinate{font-size:11px;line-height:1.5;margin:12px 0}.life-studio .drawing-cabinet>details{font-size:12px;margin:10px 0}.life-active .controls{margin-top:28px}.life-active .controls:before{content:'ПОДРОБНОЕ ИСПОЛНЕНИЕ ПРОГРАММЫ';display:block;color:#647997;font-size:10px;letter-spacing:.12em;margin-bottom:12px}.life-active .workspace{grid-template-columns:1fr}.life-active #workspaceDialog .workspace{grid-template-columns:1fr}
@media(max-width:750px){.life-studio{padding:18px 14px}.life-observation{grid-template-columns:1fr;gap:18px}.life-console{grid-row:1}.life-counter strong{font-size:30px}.life-console{gap:9px}.life-playback button{padding:10px 12px}.life-studio #field{width:min(100%,48vh)}.life-studio .life-playback-note{display:none}.life-studio .life-counter>span:last-child{margin-left:auto}.life-studio .life-metrics{font-size:10px}.life-studio .drawing-cabinet>details{font-size:11px}.field-controls .row{gap:6px}.field-controls button{padding:8px 9px}}

.life-studio[data-playback=watch] .flipping{animation-duration:.12s}
@media(max-width:750px){.life-observation{gap:12px}.life-console{display:contents}.life-console>*{order:2}.life-console>.life-counter,.life-console>.life-playback,.life-console>.life-series-status,.life-console>#lifeProgress{order:0}#lifeBoardMount{order:1}.life-studio .drawing-cabinet>details{margin:7px 0}.life-studio .drawing-cabinet h3{margin-top:0}}

.life-active #message{position:static}

.life-active #workspaceDialog .workspace{grid-template-columns:minmax(240px,.55fr) minmax(500px,1.45fr)}@media(max-width:750px){.life-active #workspaceDialog .workspace{grid-template-columns:1fr}}