:root{--ink:#16476a;--muted:#567888;--line:#c2dce4;--mint:#e9f7f1;--accent:#087f82;--gold:#f6e7ba}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:linear-gradient(120deg,#effaff,#fffdf6 64%,#f0faf5);font-family:system-ui,'Yu Gothic',sans-serif;line-height:1.75}main{max-width:1120px;margin:auto;padding:26px 24px 50px}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;font-weight:600;min-height:46px;padding:10px 18px;cursor:pointer;border:1px solid #a5ccd8;border-radius:16px;background:#fff;color:var(--ink);touch-action:manipulation}button:hover{background:#edf8fa}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,[role=button]:focus-visible,[tabindex="-1"]:focus-visible{outline:3px solid #985916;outline-offset:4px}.primary{background:linear-gradient(#079cff,#0070dc);color:#fff;border-color:#078ee4;box-shadow:inset 0 2px #ffffff60}.primary:hover{background:#0079e3}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(28px,4vw,44px);line-height:1.45;letter-spacing:.04em}h1 small{font-size:.55em;display:block;margin-top:8px}h2{font-size:25px;line-height:1.5}h3{font-size:19px}ruby{ruby-position:over}rt{font-size:.58em;font-weight:400}.preview-note,.muted,.model-note{font-size:13px;color:var(--muted)}.preview-note{margin-bottom:16px}.hero{display:grid;grid-template-columns:1.35fr .65fr;align-items:center;gap:30px;padding:34px 38px;background:linear-gradient(110deg,#def4ff,#ebf9ec);border-radius:28px}.hero-art{height:285px;text-align:center;position:relative}.hero-art .body-map{height:100%;width:auto}.rice-badge{position:absolute;left:12%;top:15%;font-size:36px;transform:rotate(-12deg);background:#fff9;border-radius:50%;padding:8px}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:#16777a}.hero .primary{min-width:230px}.secondary-entries{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0}.mode-card,.panel{background:#fff;border:1px solid var(--line);border-radius:23px;padding:24px;box-shadow:0 4px 16px #123c5510}.mode-card button{width:100%}.progress{padding:15px 20px;background:#e9f5f5;border-radius:14px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.topbar p{margin:0;font-size:14px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.actions>*{flex:1}.journey-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px}.map-aside{background:#f4f9fa;border-radius:20px;text-align:center;padding:14px}.body-map{display:block;width:100%;height:auto;max-height:450px}.map-aside .body-map{max-height:385px}.map-aside h3{margin:0}.map-aside p{font-size:12px}.organ{cursor:inherit}.organ[role=button]{cursor:pointer}.organ[role=button]:hover{filter:brightness(.92)}.organ.selected{filter:drop-shadow(0 0 5px #66b6c877)}.scene-svg{display:block;width:100%;max-height:300px;margin:auto;border-radius:20px}.location-scene{display:flex;align-items:center;justify-content:center;min-height:220px;background:#eff8f6;border-radius:24px;gap:20px;padding:8px}.location-scene .body-map{height:260px;width:160px}.location-scene p{font-size:15px;margin:0}.frame-caption{background:#eaf5f9;padding:13px 16px;border-radius:13px;font-weight:600;margin:12px 0}.step-label{color:#4e778a;font-size:13px}.choices{display:grid;gap:10px;margin:18px 0}.choices button{text-align:left}.feedback{background:#eef8f2;border-left:4px solid #31967c;padding:18px;border-radius:12px;margin:16px 0}.feedback.wrong{background:#fff7e6;border-color:#c69639}.feedback p:last-child{margin-bottom:0}.hint{background:#fff6dd;padding:12px 16px;border-radius:12px}.hint p{margin:0}.scene-block{scroll-margin-top:calc(var(--dm-common-header-height,58px) + 12px)}.stage-heading{margin-bottom:12px}.scene-controls{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.scene-controls button{flex:1;white-space:normal;font-size:14px}.organ-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.organ-buttons button{text-align:left}.organ-buttons [aria-pressed=true]{border:2px solid #178c91;background:#e4f6f1}.number{font-size:12px;border-radius:50%;padding:3px 7px;background:#e2f1f1}.map-layout{display:grid;grid-template-columns:300px 1fr;gap:30px}.map-detail{margin-top:22px;padding:18px;background:#f0f8f6;border-radius:16px}.map-detail button{width:100%;margin-top:12px}.quiz-place{display:grid;grid-template-columns:240px 1fr;align-items:center;gap:24px}.quiz-place .body-map{max-height:355px}.order-slots{display:flex;gap:8px;margin:22px 0}.order-slots>span{border:2px dashed #9fc5cd;border-radius:12px;flex:1;text-align:center;padding:12px 5px;min-height:58px}.order-slots .filled{border-style:solid;background:#eaf5f1}.quiz-progress{display:flex;gap:6px;margin:16px 0}.quiz-progress span{height:6px;background:#dcecf1;flex:1;border-radius:8px}.quiz-progress span.done{background:#259994}.score{font-size:22px}.score strong{font-size:48px}.review-item{border-top:1px solid var(--line);padding:18px 0}.review-item button{font-size:14px}.preferences{display:flex;gap:8px;align-items:center;font-size:14px;margin:28px 0}input[type=checkbox]{width:20px;height:20px;accent-color:#168b89}footer{display:flex;justify-content:center;flex-wrap:wrap;gap:22px;padding:25px;font-size:13px}details{margin-top:18px}summary{cursor:pointer;min-height:44px;padding:8px;font-weight:600}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0)}.skip-link{position:fixed;top:-100px}.skip-link:focus{top:0;z-index:99;background:white;padding:10px}#save-status:empty{display:none}.route{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.route span{background:#ecf6f3;padding:5px 9px;border-radius:8px}.panel .model-note{margin-top:15px;margin-bottom:0}
@media(max-width:760px){main{padding:18px 16px 35px}.hero{padding:25px;gap:5px;grid-template-columns:1fr}.hero-art{height:185px;grid-row:1}.rice-badge{left:28%;font-size:26px}.hero .primary{width:100%;min-width:0}.hero h1{font-size:30px}.hero p{font-size:14px}.journey-layout{display:block}.map-aside{display:flex;align-items:center;padding:8px 15px;margin-bottom:14px;gap:14px}.map-aside .body-map{height:140px;width:100px;flex-shrink:0}.map-aside p{margin-bottom:0}.panel,.mode-card{padding:18px}.scene-svg{max-height:235px}.location-scene{min-height:210px;gap:10px}.location-scene .body-map{height:205px;width:130px}.location-scene p{font-size:13px}.map-layout{grid-template-columns:1fr;gap:10px}.map-layout>.body-map{height:285px}.quiz-place{grid-template-columns:1fr;gap:12px}.quiz-place .body-map{height:270px}.secondary-entries{gap:10px}.secondary-entries h2{font-size:19px}.secondary-entries p{font-size:14px}.topbar{gap:8px}.topbar button{padding:8px 12px}h2{font-size:23px}.choices{margin:13px 0}.choices button{font-size:15px}.stage-heading{font-size:21px}.map-aside .model-note{display:none}}
@media(max-width:360px){main{padding:14px 10px 28px}.hero{padding:20px}.panel{padding:14px}.secondary-entries{grid-template-columns:1fr}.scene-controls{gap:6px}.scene-controls button{padding:8px;font-size:13px}.organ-buttons button{padding:10px 8px}.location-scene .body-map{width:112px}.location-scene p{font-size:12px}.actions>*{min-width:100%}}
.scene-legend{font-size:12px;text-align:center;color:var(--muted);margin:6px 0 0;line-height:1.5}.scene-label{paint-order:stroke;stroke:#f0f8f7;stroke-width:5;stroke-linejoin:round}.scene-svg image{pointer-events:none}[data-motion=true] .scene-motion{animation:scene-travel 1s ease-in-out both}[data-motion=true] .jaw-upper{animation:chew-upper .5s ease-in-out 2}[data-motion=true] .jaw-lower{animation:chew-lower .5s ease-in-out 2}@keyframes scene-travel{0%{transform:var(--from)}50%{transform:var(--via)}100%{transform:var(--to)}}@keyframes chew-upper{50%{transform:translateY(45px)}}@keyframes chew-lower{50%{transform:translateY(-45px)}}
[data-motion=true] .esophagus-motion{animation-name:var(--esophagus-animation);animation-timing-function:linear}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Keep the next action in reach while leaving explanations and observations scrollable. */
@media(max-width:700px),(max-height:500px) and (max-width:1000px){
  #game-root:has([data-action="quiz-next"], [data-action="explore-next"]){padding-bottom:calc(104px + env(safe-area-inset-bottom,0px))}
  #game-root :is([data-action="quiz-next"], [data-action="explore-next"]){position:fixed;z-index:20;left:max(12px,env(safe-area-inset-left,0px));right:max(12px,env(safe-area-inset-right,0px));bottom:calc(10px + env(safe-area-inset-bottom,0px));width:auto;margin:0;min-height:52px;box-shadow:0 0 0 6px #fffdf7,0 -4px 18px #073e7d24}
}