:root{--ink:#201b17;--green:#201b17;--muted:#665044;--line:#201b17;--paper:#fa4435;--lime:#ffd500;--cream:#fff5da}body{background:var(--paper);color:var(--ink)}header{background:#fa4435;border-bottom:2px solid var(--ink);backdrop-filter:none;gap:10px}.brand{margin-right:auto;gap:8px}.brand small{display:none}.logo{border-radius:0;background:#ffd500;color:#201b17;border:2px solid #201b17;box-shadow:3px 3px #201b17;font-weight:900}button{border:2px solid var(--ink);border-radius:2px;box-shadow:3px 3px 0 var(--ink);background:var(--cream);font-weight:650;transition:transform .1s}button:active:not(:disabled){transform:translate(2px,2px);box-shadow:1px 1px var(--ink)}button:disabled{opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #fff;outline-offset:4px}header button{font-size:12px;padding:6px 9px;box-shadow:2px 2px var(--ink)}#share{display:none}.progress{background:var(--cream);border:2px solid var(--ink);padding:10px 13px;box-shadow:4px 4px var(--ink);font-size:13px;font-weight:700}.progress small{color:#604a40;font-weight:400}progress{height:9px;accent-color:#db3527;border:1px solid var(--ink);background:#ead9b9}progress::-webkit-progress-bar{background:#ead9b9}progress::-webkit-progress-value{background:#fa4435}aside>.text-btn{box-shadow:none;color:#201b17;margin-top:10px}.eyebrow{color:#201b17;font-family:ui-monospace,monospace;letter-spacing:2px;font-weight:900}h1{font-weight:900;letter-spacing:-1px;font-size:30px;line-height:1.35}h2{font-weight:800}mark{background:#ffd500;padding:0 5px;color:#201b17}.quest-hero{padding:10px 0 24px;position:relative}.quest-hero h1{font-size:44px;line-height:1.3;margin-bottom:0}.mascots{display:block;width:260px;height:250px;object-fit:contain;margin:-4px auto 0;image-rendering:pixelated}.hero-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px}.hero-bottom span{font-size:12px;font-weight:700}.hero-bottom button{width:auto;min-width:138px}.primary{background:#ffd500;border-color:#201b17;color:#201b17;box-shadow:4px 4px #201b17;font-weight:800}nav{background:#ffd500;border-top:3px solid #201b17;backdrop-filter:none;gap:5px}nav button{box-shadow:none;border:2px solid transparent;background:transparent;border-radius:0;color:#201b17;font-weight:700}nav button.active{background:#201b17;color:#ffd500;border:2px solid #201b17}.path-intro{background:#ffd500;border:2px solid #201b17;border-radius:0;box-shadow:5px 5px #201b17}.path-intro p,.path-intro b,.path-spark{color:#201b17}.path-unit{border:2px solid #201b17;border-radius:0;background:#fff5da;box-shadow:5px 5px #201b17;margin:25px 0}.path-unit summary{background:#ffd500;border-bottom:2px solid #201b17}.unit-index{background:#201b17;color:#ffd500;padding:4px 8px;font-family:monospace}.path-unit summary small,.unit-state{color:#493b17}.level-path:before{background:repeating-linear-gradient(to bottom,#c7aa80 0 10px,transparent 10px 18px);width:6px}.level-node{border:3px solid #201b17;border-radius:4px;background:#fff5da;box-shadow:5px 6px #201b17;color:#201b17;font-family:monospace}.recommended .level-node{background:#ffd500;box-shadow:5px 6px #201b17,0 0 0 6px #ffbb64}.passed .level-node{background:#fa4435;color:#201b17;box-shadow:5px 6px #201b17}.pending .level-node{background:#e6dac1;color:#897d6b;box-shadow:4px 5px #b1a28c;border-color:#b1a28c}.level-caption small,.level-caption>span,.recommended .level-caption>span{color:#665044}.pending .level-caption,.pending .level-caption>span{color:#807460}.hero{background:#ffd500;border:2px solid #201b17;border-radius:0;box-shadow:5px 5px #201b17}.hero p{color:#5a481a}.hero-mark{color:#201b17;font-family:monospace;font-style:normal;font-weight:900}.pill{background:#fff5da;border:1px solid #201b17;border-radius:0}.card,.case,.knowledge,.metric,.bubble,.empty{border:2px solid #201b17;border-radius:0;background:#fff5da;box-shadow:4px 4px #201b17}.card{line-height:1.9}.case{border-left:8px solid #201b17}.knowledge{background:#ffd500;color:#201b17}.knowledge small{color:#53421a;font-weight:800}.num{border:2px solid #201b17;border-radius:0;background:#ffd500;color:#201b17}.section-head small{color:#49251c}.option{border:2px solid #cbb999;border-radius:0;background:#fffaf0}.option:has(input:checked){border-color:#201b17;background:#ffe46c}textarea,#auth-form input{border:2px solid #201b17;border-radius:0;background:#fffdf4;color:#201b17}input{accent-color:#d93627}.feedback{background:#ffe46c;border:2px solid #201b17;border-radius:0}.ask-ai{background:#ffd500;border:2px solid #201b17;color:#201b17;border-radius:0}.suggestions button{background:#ffd500;border-radius:0;border:2px solid #201b17}.bubble.user{background:#ffd500}.metric strong{font-family:monospace;font-weight:900}.metric span,.bubble small{color:#665044}.next{background:#ffd500;border:2px solid #201b17;padding:18px;box-shadow:4px 4px #201b17}.next .muted{color:#5a481a}#toast{border:2px solid #201b17;background:#ffd500;color:#201b17;box-shadow:4px 4px #201b17;border-radius:0}.account-pets{width:190px;height:170px;object-fit:contain;display:block;margin:0 auto}.auth-tabs{display:flex;gap:12px;margin-bottom:25px}.auth-tabs button{flex:1;min-width:0}#auth-form label{display:block;font-size:14px;font-weight:700;margin-top:16px}#auth-form input{display:block;width:100%;min-height:48px;padding:12px;font:16px system-ui;margin-top:6px}#auth-message{font-size:14px;margin-bottom:0}#account-content button{margin:5px 5px 5px 0}footer{border-top:2px solid #201b17;color:#42251d}.muted{color:#63463b}#messages:empty:after{color:#49251c}#chat-form{border-top:2px solid #201b17}.chat-error{border-radius:0}summary{cursor:pointer}@media(min-width:760px){aside{border-right:2px solid #201b17}nav{background:none;border:0;padding:24px 0}.quest-hero{min-height:330px;padding-right:230px}.quest-hero h1{font-size:48px}.mascots{position:absolute;right:0;top:12px;width:240px;height:290px;margin:0}.hero-bottom{align-items:flex-start;flex-direction:column;margin-top:24px}.brand small,#share{display:inline}main{padding:36px}.account-pets{width:240px;height:210px}.aside-note{color:#49251c}}
#library-link{font-size:12px}.library-card{margin:25px 0}.source-list{font-size:12px;margin-top:14px;padding-top:10px;border-top:1px dashed #a69165;color:#665044;white-space:normal}#learn details{background:#fff5da;border:2px solid #201b17;padding:18px;box-shadow:4px 4px #201b17}#learn details summary{font-weight:800}#chat h1{font-size:30px}#account-content button{min-height:48px}@media(max-width:400px){header{padding:0 10px;gap:7px}.brand{font-size:15px}.logo{width:31px;height:33px;line-height:29px}header button{font-size:11px;padding:6px}.quest-hero h1{font-size:39px}}
/* Animated AI companion: eight discrete atlas frames, not a translated still. */
#ai-launcher{position:fixed;z-index:30;width:84px;height:100px;padding:0;border:0;box-shadow:none;background:transparent;touch-action:none;user-select:none;cursor:grab;transition:left .18s,top .18s;filter:drop-shadow(2px 3px 0 #201b1733)}#ai-launcher[hidden]{display:none}#ai-launcher.dragging{cursor:grabbing;transition:none}#ai-launcher:active{transform:none}.ai-pet-sprite{display:block;width:84px;height:84px;background-image:url('assets/cat-chat-atlas.png');background-size:400% 200%;background-repeat:no-repeat;image-rendering:pixelated;animation:cat-companion 2.8s step-end infinite}.ai-launcher-label{display:block;margin-top:-6px;background:#ffd500;border:2px solid #201b17;box-shadow:2px 2px #201b17;font-size:12px;line-height:22px;font-weight:800;white-space:nowrap}@keyframes cat-companion{0%,100%{background-position:0 0}12.5%{background-position:33.3333% 0}25%{background-position:66.6667% 0}37.5%{background-position:100% 0}50%{background-position:0 100%}62.5%{background-position:33.3333% 100%}75%{background-position:66.6667% 100%}87.5%{background-position:100% 100%}}nav{grid-template-columns:repeat(3,minmax(0,1fr))}#ai-panel{padding:0;border:3px solid #201b17;background:#fa4435;color:#201b17;width:min(480px,calc(100vw - 24px));max-width:none;height:min(760px,calc(100dvh - 32px));max-height:calc(100dvh - 32px);margin:auto 12px auto auto;box-shadow:6px 6px #201b17;overflow:hidden}#ai-panel::backdrop{background:#201b1780}.ai-panel-bar{height:64px;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;background:#ffd500;border-bottom:2px solid #201b17}.ai-panel-bar button{min-height:42px;font-size:13px;padding:4px 10px}.ai-panel-body{height:calc(100% - 64px);overflow-y:auto;overscroll-behavior:contain;padding:20px 18px 28px}#ai-panel h1{font-size:25px}#ai-panel #chat-form{position:static}#ai-panel .bubble{overflow-wrap:anywhere}#ai-panel .suggestions{flex-wrap:wrap}#ai-panel .suggestions button{white-space:normal}@media(max-width:759px){#ai-panel{width:100%;height:92dvh;max-height:92dvh;margin:auto 0 0;border-width:3px 0 0;box-shadow:none}.ai-panel-body{padding-bottom:calc(24px + env(safe-area-inset-bottom))}}@media(prefers-reduced-motion:reduce){.ai-pet-sprite{animation:none}#ai-launcher{transition:none}}
/* Quiet companion at rest; motion responds to attention and touch. */
#ai-launcher{filter:none}.ai-pet-sprite{animation:cat-companion-quiet 8s step-end infinite;transform-origin:50% 95%;filter:drop-shadow(0 3px 0 #201b1722)}.ai-launcher-label{width:78px;margin:-4px auto 0;line-height:21px;font-size:11px;border-radius:7px;box-shadow:2px 3px #201b17}.ai-companion-hint{position:absolute;bottom:102px;right:0;width:142px;padding:8px 10px;background:#fff5da;border:2px solid #201b17;border-radius:12px 12px 3px 12px;font-size:12px;line-height:1.5;box-shadow:3px 3px #201b17;opacity:0;transform:translateY(5px) scale(.94);transform-origin:bottom right;transition:opacity .18s,transform .18s;pointer-events:none}#ai-launcher[data-side=left] .ai-companion-hint{left:0;right:auto;transform-origin:bottom left;border-radius:12px 12px 12px 3px}#ai-launcher.hinting .ai-companion-hint{opacity:1;transform:none}#ai-launcher.held .ai-pet-sprite{animation:none;background-position:0 100%;transform:translateY(-5px) rotate(-5deg)}#ai-launcher.held .ai-companion-hint{opacity:0}#ai-launcher.dragging .ai-launcher-label{background:#fff5da}#ai-launcher.landed .ai-pet-sprite{animation:cat-land .55s ease-out,cat-companion-quiet 8s .55s step-end infinite}@keyframes cat-land{0%{transform:translateY(-9px) rotate(-5deg)}45%{transform:translateY(2px) scale(1.06,.94)}75%{transform:translateY(-3px)}100%{transform:none}}@keyframes cat-companion-quiet{0%,42%,100%{background-position:0 0}44%{background-position:66.6667% 0}46%{background-position:100% 0}48%{background-position:0 0}72%{background-position:33.3333% 0}76%{background-position:66.6667% 100%}80%{background-position:100% 100%}84%{background-position:0 0}}@media(prefers-reduced-motion:reduce){.ai-pet-sprite,#ai-launcher.landed .ai-pet-sprite{animation:none}.ai-companion-hint{transition:none}#ai-launcher.held .ai-pet-sprite{transform:none}}
/* Mirror only the character: keep labels readable and motion transforms independent. */
#ai-launcher[data-side="left"] .ai-pet-sprite{scale:-1 1}
#ai-launcher[data-side="right"] .ai-pet-sprite{scale:1 1}
/* Longer study-room brand remains readable on compact phones. */
.brand{white-space:nowrap}.logo{flex-shrink:0}@media(max-width:759px){header{gap:6px;padding:0 10px}.brand{font-size:14px;gap:6px}.brand small{display:none}header button{font-size:11px;padding:6px;flex-shrink:0}}@media(max-width:359px){.brand{font-size:12px}.logo{width:26px;height:30px;line-height:26px}header{padding:0 7px;gap:4px}}