/* Space-first visual layer. Quantity rules stay in lab-model.mjs. */
#floor-lab{
  --ink:#143e39;--body:#34554e;--muted:#6b7d76;--paper:#fffdf7;--line:#d9e3db;
  --green:#28745c;--green-dark:#185541;--yellow:#ffe4a0;--blue:#d5edf8;
  --blue-strong:#236987;--purple:#eadcf5;--purple-strong:#76528e;
  background:#eaf1ed;color:var(--body)
}
#floor-lab::after{background:linear-gradient(180deg,rgba(255,254,249,.82) 0,rgba(255,254,249,.18) 23%,transparent 43%,transparent 78%,rgba(246,242,230,.40) 100%),radial-gradient(circle at 50% 44%,transparent 50%,rgba(24,65,53,.07) 100%)}

/* One identity, one activity, one promise. */
#floor-lab .lab-header{top:16px;left:clamp(14px,2.8vw,38px);right:clamp(14px,2.8vw,38px);max-width:760px;pointer-events:none}
#floor-lab .lab-header :is(button,summary,select,input){pointer-events:auto}
#floor-lab .brand-line{align-items:center;color:var(--muted);letter-spacing:.01em}
#floor-lab .brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-size:10px;font-weight:800}
#floor-lab .brand-line p span{margin:0;font-size:inherit;letter-spacing:.02em;opacity:1}
#floor-lab .brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 auto;border-radius:12px;color:#fff;background:linear-gradient(145deg,#33836a,#1d5d4d);box-shadow:0 7px 20px rgba(24,81,64,.24),inset 0 1px 0 rgba(255,255,255,.38);font-size:9px;letter-spacing:-.08em}
#floor-lab .free{padding:5px 10px;border:1px solid rgba(35,104,82,.22);border-radius:999px;background:rgba(255,253,247,.88);color:#326250;box-shadow:0 5px 18px rgba(33,73,60,.08);font-size:9px;font-weight:800;white-space:nowrap}
#floor-lab .booth-name{display:inline-flex;margin-top:9px;padding:3px 9px;border-radius:999px;background:rgba(255,253,247,.82);color:#557068;font-size:9px;font-weight:800;letter-spacing:.06em}
#floor-lab h1{margin:5px 0 0;color:var(--ink);font-size:clamp(24px,3vw,38px);font-weight:850;line-height:1.24;letter-spacing:.035em;text-wrap:balance;text-shadow:0 2px 0 rgba(255,255,255,.62)}
#floor-lab .design-promise{margin:3px 0 9px;color:#46665e;font-size:11px;font-weight:650;letter-spacing:.05em}
#floor-lab [data-entry] button{min-width:62px;min-height:36px;border-color:rgba(35,91,73,.22);border-radius:999px;background:rgba(255,253,247,.90);color:#315d51;box-shadow:0 5px 18px rgba(30,67,54,.11);font-weight:800}

/* Exactly four visible places at the entrance. */
#floor-lab .place-link{min-width:154px;min-height:68px;padding:10px 15px 9px;border:2px solid rgba(255,255,255,.86);border-bottom-width:5px;border-radius:20px;color:var(--ink);background:#fffdf7;box-shadow:0 16px 38px rgba(25,58,47,.22),inset 0 1px 0 #fff;font-size:13px;font-weight:850;line-height:1.25;text-align:left}
#floor-lab .place-link span{margin-top:5px;color:#4f6961;font-size:10px;font-weight:700}
#floor-lab .place-link[data-mode="add"]{background:rgba(255,234,171,.96);border-color:#fff4d2;border-bottom-color:#d6a34b}
#floor-lab .place-link[data-mode="mul"]{background:rgba(218,240,249,.96);border-color:#effbff;border-bottom-color:#6da8c2}
#floor-lab .place-link[data-mode="fraction"]{background:rgba(238,224,248,.96);border-color:#fbf2ff;border-bottom-color:#9b79ae}
#floor-lab .place-link[data-mode="shop"]{background:rgba(255,231,235,.97);border-color:#fff5f6;border-bottom-color:#c98294}
#floor-lab .place-link:not(:disabled):hover{filter:saturate(1.08) brightness(1.02);translate:-50% calc(-50% - 3px)}
#floor-lab .place-link:not(:disabled):active{translate:-50% calc(-50% + 1px);border-bottom-width:2px}

/* Object labels follow the physical prop instead of forming a command menu. */
#floor-lab .world-action{width:150px;min-height:50px;padding:7px 10px;border:2px solid rgba(255,255,255,.94);border-bottom-width:5px;border-radius:16px;color:var(--ink);background:#fffdf7;box-shadow:0 12px 28px rgba(24,60,48,.24),inset 0 1px 0 #fff;font-size:12px;font-weight:850}
#floor-lab .world-action span{display:block;margin-top:3px;color:#526c64;font-size:9px;font-weight:650}
#floor-lab[data-mode="add"] .world-action,#floor-lab[data-mode="sub"] .world-action{background:rgba(255,234,171,.97);border-color:#fff5d8;border-bottom-color:#d2a049}
#floor-lab[data-mode="mul"] .world-action,#floor-lab[data-mode="div"] .world-action{background:rgba(218,240,249,.97);border-color:#effbff;border-bottom-color:#69a4bd}
#floor-lab[data-mode="fraction"] .world-action,#floor-lab[data-mode="ledger"] .world-action{background:rgba(238,224,248,.97);border-color:#fbf2ff;border-bottom-color:#9975ad}
#floor-lab[data-mode="shop"] .world-action{background:rgba(255,231,235,.98);border-color:#fff5f6;border-bottom-color:#c98294}
#floor-lab .world-action:not(:disabled):active{margin-top:3px;border-bottom-width:2px}

/* On a mouse, the room is the interface: reveal the one nearby command only after the pointer finds its object. */
@media(hover:hover) and (pointer:fine){
  #floor-lab .world-action{opacity:0;pointer-events:none;transform:scale(.94);transition:opacity .16s ease,transform .16s ease}
  #floor-lab .world-action[data-hovered="true"],#floor-lab .world-action:focus-visible{opacity:1;pointer-events:auto;transform:scale(1)}
  #floor-lab .world-action[data-hovered="true"]::before{content:'●';position:absolute;top:-9px;left:50%;translate:-50% 0;color:#f3b84e;font-size:9px;text-shadow:0 1px 0 #fff;pointer-events:none}
}

/* A small camera strip stays inside the panel and never covers an object. */
#floor-lab .view-controls{position:static;display:flex;align-items:center;gap:3px;margin:0 0 5px;padding:3px;border:1px solid rgba(39,86,70,.14);border-radius:12px;background:#f3f4ee;box-shadow:none;backdrop-filter:none}
#floor-lab .view-controls>span{margin-right:auto;padding:1px 5px;color:#667a72;font-size:8px;font-weight:800;text-align:left}
#floor-lab .view-controls button{min-width:38px;min-height:29px;padding:2px 6px;border:0;border-radius:9px;background:transparent;color:#536b63;font-size:8px;font-weight:750}
#floor-lab .view-controls button[aria-pressed="true"]{color:#fff;background:var(--green);box-shadow:0 4px 10px rgba(37,112,88,.20)}
#floor-lab .quick-help,#floor-lab .booth-switch{margin:0 0 5px}
#floor-lab .quick-help>summary,#floor-lab .booth-switch>summary{display:inline-flex;align-items:center;min-height:28px;padding:3px 9px;border:1px solid rgba(45,94,77,.15);border-radius:999px;background:#f3f4ee;color:#587067;font-size:9px;font-weight:750;cursor:pointer;list-style:none}
#floor-lab .quick-help>summary::-webkit-details-marker,#floor-lab .booth-switch>summary::-webkit-details-marker{display:none}
#floor-lab .quick-help>summary::before,#floor-lab .booth-switch>summary::before{content:'＋';margin-right:5px;color:#478066;font-weight:900}
#floor-lab .quick-help[open]>summary::before,#floor-lab .booth-switch[open]>summary::before{content:'−'}
#floor-lab .quick-help-body{margin-top:5px;padding:7px 8px;border:1px solid rgba(39,86,70,.12);border-radius:14px;background:#fbfcf7}
#floor-lab .quick-help-body .operation-steps,#floor-lab .quick-help-body .control-hint{margin-bottom:5px}
#floor-lab .booth-switch .booth-modes{margin:5px 0 1px}
#floor-lab .booth-switch[hidden],#floor-lab [data-camera-tools][hidden]{display:none!important}

/* Compact instrument panel; the 3D room remains dominant. */
#floor-lab .lab-console{left:50%;bottom:34px;width:min(620px,calc(100% - 34px));max-height:min(48svh,510px);padding:12px 14px 11px;border:1px solid rgba(255,255,255,.92);border-radius:24px;background:#fffdf7;box-shadow:0 24px 70px rgba(26,58,47,.22),0 2px 0 rgba(255,255,255,.90) inset}
#floor-lab:not([data-mode="floor"]) .lab-console::before{content:"";position:absolute;top:17px;bottom:17px;left:0;width:5px;border-radius:0 8px 8px 0;background:var(--green)}
#floor-lab[data-mode="add"] .lab-console::before,#floor-lab[data-mode="sub"] .lab-console::before{background:#d49b39}
#floor-lab[data-mode="mul"] .lab-console::before,#floor-lab[data-mode="div"] .lab-console::before{background:#5a9ab8}
#floor-lab[data-mode="fraction"] .lab-console::before,#floor-lab[data-mode="ledger"] .lab-console::before{background:#9875ac}
#floor-lab[data-mode="shop"] .lab-console::before{background:#c98294}
#floor-lab[data-mode="floor"] .lab-console{width:min(470px,calc(100% - 30px));padding:10px 12px;background:rgba(255,253,247,.90)}
#floor-lab .action-guide{display:flex;align-items:center;gap:10px;margin-bottom:8px}
#floor-lab .guide-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 auto;border-radius:12px;color:#fff;background:var(--green);box-shadow:0 5px 13px rgba(37,113,88,.22);font-size:14px;font-weight:900}
#floor-lab .action-guide p{display:grid;line-height:1.35}
#floor-lab .action-guide strong{color:var(--ink);font-size:14px;font-weight:850}
#floor-lab .action-guide p span{color:var(--muted);font-size:9px;font-weight:650}
#floor-lab[data-phase="check"] .guide-mark{background:#23694f}
#floor-lab[data-mode="floor"] .guide-mark{background:#345f52}
#floor-lab .table-task{margin:1px 0 2px;color:var(--ink);font-size:15px;font-weight:850;line-height:1.45}
#floor-lab .lesson-hint{margin:0 0 6px;color:#526b63;font-size:10px;font-weight:650;line-height:1.55}
#floor-lab .operation-steps{display:flex;align-items:center;gap:4px;margin:0 0 6px;padding:4px 6px;border:1px solid rgba(39,86,70,.14);border-radius:12px;background:#f4f5ef;color:#87958f;font-size:9px;font-weight:800;line-height:1.2;white-space:nowrap}
#floor-lab .operation-steps [data-step]{padding:3px 5px;border-radius:8px}
#floor-lab[data-phase="choose"] .operation-steps [data-step="look"],#floor-lab[data-phase="move"] .operation-steps [data-step="move"],#floor-lab[data-phase="check"] .operation-steps [data-step="check"]{color:#fff;background:var(--green);box-shadow:0 2px 0 var(--green-dark)}
#floor-lab .step-arrow{color:#a7b1aa;font-weight:900}
#floor-lab .control-hint{display:flex;gap:6px;margin:0 0 3px;color:#42645a;font-size:10px;font-weight:800;line-height:1.35;flex-wrap:wrap}
#floor-lab .control-hint span{padding:2px 6px;border-radius:999px;background:#eef4ed}
#floor-lab .target-hint{min-height:17px;margin:0 0 5px;padding:3px 7px;border-left:3px solid #e7b35e;border-radius:5px;color:#5b7068;background:#fff8e6;font-size:10px;font-weight:750;line-height:1.35}
#floor-lab[data-mode="floor"] .target-hint{display:none}
#floor-lab[data-mode="floor"] .lesson-hint,#floor-lab[data-mode="floor"] .result,#floor-lab[data-mode="floor"] .console-bottom{display:none}

#floor-lab .result{margin:6px 0 7px;padding:8px 10px 7px;border:0;border-radius:16px;background:linear-gradient(135deg,#edf7ef,#faf5e7)}
#floor-lab .result-kicker{color:#697c74;font-size:8px;font-weight:850;letter-spacing:.13em}
#floor-lab .equation{min-height:28px;color:var(--ink);font-size:clamp(21px,2.6vw,29px);font-weight:850;letter-spacing:.055em;line-height:1.25}
#floor-lab .explanation{color:#587069;font-size:10px}
#floor-lab .explanation summary{min-height:25px;padding:2px 0;font-weight:750;text-decoration:underline dotted #9aaca3;text-underline-offset:3px}
#floor-lab .explanation p{padding:4px 0 1px}
#floor-lab .operation-help>summary,#floor-lab .recipient-details>summary{min-height:31px;padding:5px 2px;color:#63776f;font-size:10px;font-weight:750;text-decoration:underline dotted #aebdb5;text-underline-offset:4px}
#floor-lab .operation-help[open]>.settings{padding:7px 0 3px}
#floor-lab .settings{gap:7px 9px;padding:2px 0}
#floor-lab input,#floor-lab select{border-color:#c7d5cb;border-radius:10px;background:#fffefb;color:#294f46}
#floor-lab .settings .primary{border-color:var(--green);border-radius:13px;background:var(--green);box-shadow:0 3px 0 var(--green-dark);font-size:12px;font-weight:800}
#floor-lab .settings .primary:active:not(:disabled){translate:0 2px;box-shadow:0 1px 0 var(--green-dark)}

#floor-lab .booth-modes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;margin:3px 0 7px;max-width:610px}
#floor-lab[data-mode="mul"] .booth-modes,#floor-lab[data-mode="div"] .booth-modes{grid-template-columns:repeat(2,minmax(0,1fr))}
#floor-lab .booth-modes button{min-height:39px;padding:5px 9px;border-color:rgba(47,86,73,.16);border-radius:13px;background:rgba(255,253,247,.88);color:#48645b;box-shadow:0 4px 13px rgba(34,71,59,.07);font-size:10px;font-weight:800}
#floor-lab .booth-modes button[aria-pressed="true"]{color:#fff;background:var(--green);border-color:var(--green)}
#floor-lab[data-mode="mul"] .booth-modes button[aria-pressed="true"],#floor-lab[data-mode="div"] .booth-modes button[aria-pressed="true"]{background:var(--blue-strong);border-color:var(--blue-strong)}
#floor-lab[data-mode="fraction"] .booth-modes button[aria-pressed="true"],#floor-lab[data-mode="ledger"] .booth-modes button[aria-pressed="true"],#floor-lab[data-mode="shop"] .booth-modes button[aria-pressed="true"]{background:var(--purple-strong);border-color:var(--purple-strong)}
#floor-lab .console-bottom{margin-top:5px;padding:0 2px}
#floor-lab .status{color:#5f746c;font-size:9px;font-weight:650}
#floor-lab .utility button{min-height:33px;padding:4px 8px;border-radius:11px;color:#526a62;font-size:9px}

#floor-lab .activity-menu{position:relative;display:inline-block}
#floor-lab .activity-menu>summary{min-height:30px;padding:4px 10px;border:1px solid rgba(45,94,77,.16);border-radius:999px;background:rgba(255,253,247,.86);color:#4c6a60;font-size:9px;font-weight:750;box-shadow:0 4px 14px rgba(30,70,56,.07)}
#floor-lab .activity-menu>nav{top:35px;border:1px solid var(--line);border-radius:17px;box-shadow:0 16px 44px rgba(29,59,49,.18)}
#floor-lab .more-choices summary{background:#f2f2ea}
#floor-lab .lab-footer{color:#586c65}
#floor-lab .lab-footer details div{border-color:#d9e2db;background:rgba(255,253,248,.98);box-shadow:0 18px 50px rgba(26,58,47,.20)}

@media(min-width:980px){
  #floor-lab:not([data-mode="floor"]) .lab-console{left:auto;right:22px;bottom:28px;translate:none;width:370px;max-height:calc(100% - 235px);padding:13px 15px 11px}
}
@media(max-width:600px){
  #floor-lab .lab-header{top:10px;left:11px;right:11px}
  #floor-lab .brand-line{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px}
  #floor-lab .brand-line p span{display:inline-flex}
  #floor-lab .brand-line p .brand-mark{display:grid;width:30px;height:30px;border-radius:10px}
  #floor-lab .brand{min-width:0;gap:6px;overflow:hidden;font-size:8px;white-space:nowrap}
  #floor-lab .brand>span:last-child{font-size:8px}
  #floor-lab .free{padding:4px 6px;font-size:8px}
  #floor-lab .booth-name{margin-top:6px;padding:3px 7px;font-size:8px}
  #floor-lab h1{margin-top:4px;font-size:20px}
  #floor-lab .design-promise{margin:2px 0 6px;font-size:9px}
  #floor-lab [data-entry] button{min-width:58px;min-height:32px;padding:4px 8px;font-size:9px}
  #floor-lab .booth-modes{gap:4px;margin-bottom:5px}
  #floor-lab .booth-modes button{min-height:36px;padding:4px 6px;border-radius:12px;font-size:9px}
  #floor-lab .activity-menu>summary{min-height:27px;padding:3px 8px;font-size:8px}
  #floor-lab .place-link{min-width:108px;min-height:54px;padding:7px 9px 6px;border-radius:16px;font-size:10px}
  #floor-lab .place-link span{margin-top:3px;font-size:8px}
  #floor-lab .world-action{width:126px;min-height:44px;padding:5px 7px;border-radius:14px;font-size:10px}
  #floor-lab .world-action span{font-size:8px}
  #floor-lab .view-controls{gap:2px;margin-bottom:4px;padding:2px}
  #floor-lab .view-controls>span{font-size:7px}
  #floor-lab .view-controls button{min-width:34px;min-height:27px;font-size:8px}
  #floor-lab .lab-console{bottom:39px;width:calc(100% - 16px);max-height:min(40svh,370px);padding:9px 10px 8px;border-radius:21px}
  #floor-lab[data-mode="floor"] .lab-console{width:calc(100% - 18px);padding:8px 10px}
  #floor-lab .action-guide{gap:8px;margin-bottom:5px}
  #floor-lab .guide-mark{width:29px;height:29px;border-radius:10px;font-size:12px}
  #floor-lab .action-guide strong{font-size:11px}
  #floor-lab .action-guide p span{font-size:8px}
  #floor-lab .operation-steps{gap:2px;margin-bottom:4px;padding:3px 4px;font-size:8px}
  #floor-lab .operation-steps [data-step]{padding:3px 3px}
  #floor-lab .control-hint{gap:3px;margin-bottom:2px;font-size:8px}
  #floor-lab .control-hint span{padding:2px 4px}
  #floor-lab .target-hint{min-height:14px;margin-bottom:4px;padding:2px 5px;font-size:8px}
  #floor-lab .quick-help,#floor-lab .booth-switch{margin-bottom:4px}
  #floor-lab .quick-help>summary,#floor-lab .booth-switch>summary{min-height:26px;padding:3px 8px;font-size:8px}
  #floor-lab .table-task{font-size:13px}
  #floor-lab .lesson-hint{font-size:9px}
  #floor-lab .result{margin:4px 0 5px;padding:6px 8px 5px;border-radius:13px}
  #floor-lab .result-kicker{font-size:7px}
  #floor-lab .equation{min-height:24px;font-size:19px}
  #floor-lab .operation-help>summary,#floor-lab .recipient-details>summary{min-height:28px;padding:4px 1px;font-size:9px}
  #floor-lab .console-bottom{margin-top:3px}
  #floor-lab .lab-footer{left:11px;right:11px;bottom:6px;font-size:7px}
}
@media(max-width:380px){#floor-lab .brand{font-size:7px}#floor-lab .free{font-size:7px}#floor-lab h1{font-size:18px}}
@media(hover:hover) and (pointer:fine){#floor-lab .target-hint{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}}
@media(prefers-reduced-motion:reduce){#floor-lab .place-link:not(:disabled):hover{translate:-50% -50%}#floor-lab .world-action{transition:none!important;transform:none}}

/* 2026-09-23: one clear action, one readable result, details on request. */
body{margin:0}
#floor-lab .lab-console{bottom:44px;width:min(760px,calc(100% - 32px));max-height:min(56svh,560px);padding:18px 22px 16px;border-radius:26px;background:rgba(255,253,247,.97);box-shadow:0 22px 64px rgba(26,58,47,.25),0 2px 0 rgba(255,255,255,.94) inset}
#floor-lab[data-mode="floor"] .lab-console{bottom:44px;width:min(560px,calc(100% - 32px));padding:17px 20px}
#floor-lab[data-mode="floor"] .activity-menu{display:none}
#floor-lab .action-guide{gap:12px;margin-bottom:9px}
#floor-lab .guide-mark{width:46px;height:46px;border-radius:15px;font-size:20px}
#floor-lab .action-guide strong{font-size:18px;line-height:1.35}
#floor-lab .action-guide p span{font-size:14px;line-height:1.4}
#floor-lab:not([data-mode="floor"]) .action-guide [data-guide-text]{display:none}
#floor-lab .booth-name{font-size:13px}
#floor-lab .design-promise{font-size:14px}
#floor-lab .free{font-size:12px}
#floor-lab .title-line h1{font-size:clamp(24px,3vw,34px);line-height:1.28}
#floor-lab .table-task{margin:5px 0 4px;font-size:20px;line-height:1.5}
#floor-lab .lesson-hint{margin:4px 0 8px;font-size:16px;line-height:1.5;font-weight:750;color:#284f41}
#floor-lab .target-hint{min-height:44px;margin:0 0 8px;padding:9px 12px;border-left-width:5px;font-size:15px;line-height:1.45}
#floor-lab .result{display:grid;grid-template-columns:minmax(0,1fr) minmax(126px,auto);grid-template-areas:"kicker explain" "equation explain";align-items:center;gap:3px 14px;margin:10px 0 8px;padding:12px 16px;border:1px solid #dfe9dc;border-radius:20px;background:linear-gradient(125deg,#edf7ef,#fff8e7);box-shadow:0 4px 14px rgba(42,81,58,.07)}
#floor-lab .result[hidden]{display:none!important}
#floor-lab .result-kicker{grid-area:kicker;color:#48665a;font-size:13px;font-weight:850;letter-spacing:.04em}
#floor-lab .result>.equation{grid-area:equation;min-height:36px;color:#173f3c;font-size:clamp(29px,3.2vw,36px);font-weight:900;letter-spacing:.015em;line-height:1.25;overflow-wrap:anywhere}
#floor-lab .explanation{grid-area:explain;align-self:center;color:#355b4b;font-size:15px}
#floor-lab .explanation summary{display:flex;align-items:center;justify-content:center;min-width:112px;min-height:48px;padding:8px 12px;border:1px solid #b9cfc0;border-radius:14px;background:#fffefb;font-size:15px;text-decoration:none;cursor:pointer}
#floor-lab .explanation p{padding:9px 2px 3px;font-size:15px;line-height:1.7}
#floor-lab .console-bottom{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;margin-top:8px;padding:0}
#floor-lab .status{min-width:0;color:#37574a;font-size:14px;line-height:1.45}
#floor-lab .command-drawer{position:relative;min-width:190px}
#floor-lab .command-drawer>summary{display:flex;align-items:center;justify-content:center;min-height:50px;padding:9px 16px;border:1px solid #b7cbbc;border-bottom-width:3px;border-radius:16px;background:#f1f5ed;color:#284f41;font-size:15px;font-weight:850;line-height:1.35;cursor:pointer;list-style:none}
#floor-lab .command-drawer>summary::-webkit-details-marker{display:none}
#floor-lab .command-drawer>summary::before{content:"＋";margin-right:8px;color:#357452;font-size:18px;font-weight:900}
#floor-lab .command-drawer[open]>summary::before{content:"−"}
#floor-lab .command-drawer[open]>summary{border-bottom-width:1px;background:#e7f0e6}
#floor-lab .command-drawer-body{display:grid;gap:12px;margin-top:10px;padding:14px;border:1px solid #d8e3d7;border-radius:18px;background:#f8faf5}
#floor-lab .quick-help-body{margin:0;padding:0;border:0;border-radius:0;background:transparent}
#floor-lab .operation-steps{gap:6px;margin:0 0 9px;padding:7px 9px;border-radius:13px;font-size:15px;line-height:1.4;white-space:normal;flex-wrap:wrap;color:#526d60}
#floor-lab .operation-steps [data-step]{padding:5px 8px;border-radius:9px}
#floor-lab .control-hint{gap:7px;margin:0 0 8px;font-size:14px;line-height:1.5}
#floor-lab .control-hint span{padding:5px 9px;border:1px solid #d9e5d9;border-radius:12px;background:#eef4ed}
#floor-lab .view-controls{gap:6px;margin:0;padding:8px 0 0;border-top:1px solid #dce6dc}
#floor-lab .view-controls>span{font-size:14px}
#floor-lab .view-controls button{min-width:46px;min-height:46px;padding:6px 10px;font-size:15px}
#floor-lab .operation-help>summary,#floor-lab .recipient-details>summary,#floor-lab .small-details summary{display:flex;align-items:center;min-height:48px;padding:9px 8px;color:#304f43;font-size:15px;text-decoration:none}
#floor-lab .operation-help[open]>.settings{padding:12px 4px 5px}
#floor-lab .settings{gap:12px 14px;padding:8px 2px}
#floor-lab .settings label,#floor-lab .setup-picker{font-size:15px;line-height:1.5}
#floor-lab .setup-picker>p{font-size:16px}
#floor-lab input,#floor-lab select{min-height:48px;padding:8px 12px;font-size:16px}
#floor-lab .settings button,#floor-lab .utility button{min-height:48px;padding:9px 14px;border-radius:14px;font-size:15px}
#floor-lab .settings .primary{min-height:52px;padding:10px 18px;font-size:16px}
#floor-lab .setup-note,#floor-lab .small-details,#floor-lab .recipient-details,#floor-lab .wallet-totals,#floor-lab .shop-totals{font-size:14px;line-height:1.65}
#floor-lab .person-list{gap:8px}
#floor-lab .person-list button,#floor-lab .recipient-list button{min-width:64px;min-height:48px;padding:9px 12px;font-size:14px}
#floor-lab .record-list button{min-width:78px;min-height:48px;font-size:14px}
#floor-lab .utility{display:flex;gap:8px;flex-wrap:wrap}
#floor-lab .utility button{color:#35564a;background:#fffefb;border-color:#c7d5c8}
#floor-lab .booth-switch{margin:6px 0 0}
#floor-lab .booth-switch>summary{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;font-size:14px}
#floor-lab .booth-modes{gap:8px;margin:8px 0}
#floor-lab .booth-modes button{min-height:48px;padding:9px 15px;font-size:15px}
#floor-lab .world-action{min-width:150px;width:clamp(150px,18vw,176px);min-height:54px;padding:10px 13px;border-radius:16px;font-size:15px;line-height:1.35}
#floor-lab .world-action span{font-size:13px;line-height:1.4}
#floor-lab .world-action{transition:transform .12s ease}
#floor-lab .world-action[data-hovered="true"],#floor-lab .world-action:focus-visible{z-index:6;translate:-50% calc(-50% - 58px)}
#floor-lab .activity-menu>summary{min-height:44px;padding:8px 13px;font-size:14px}
#floor-lab .place-link{min-width:148px;min-height:64px;padding:10px 14px;font-size:15px}
#floor-lab .place-link span{font-size:12px;line-height:1.35}
#floor-lab button,#floor-lab summary,#floor-lab select,#floor-lab input{touch-action:manipulation}
#floor-lab :is(button,summary,input,select):focus-visible{outline:3px solid #e2a94b;outline-offset:3px}

@media(min-width:980px){
  #floor-lab:not([data-mode="floor"]) .lab-console{right:26px;bottom:44px;width:420px;max-height:calc(100% - 220px);padding:20px 22px 18px}
  #floor-lab .lab-console{max-height:min(68svh,650px)}
}
@media(max-width:600px){
  #floor-lab .lab-header{top:10px;left:12px;right:12px}
  #floor-lab .brand{font-size:10px}
  #floor-lab .brand>span:last-child{font-size:10px}
  #floor-lab .free{font-size:10px}
  #floor-lab .booth-name{font-size:11px}
  #floor-lab .title-line h1{font-size:22px}
  #floor-lab .design-promise{font-size:12px}
  #floor-lab .place-link{min-width:132px;min-height:60px;padding:9px 10px;font-size:13px}
  #floor-lab .place-link span{font-size:11px}
  #floor-lab .world-action{min-width:142px;width:min(160px,48vw);min-height:52px;padding:8px 9px;font-size:14px}
  #floor-lab .world-action span{font-size:12px}
  #floor-lab .lab-console{left:50%;right:auto;bottom:46px;translate:-50% 0;width:calc(100% - 18px);max-height:min(52svh,460px);padding:14px 15px 13px;border-radius:22px}
  #floor-lab[data-mode="floor"] .lab-console{bottom:46px;width:calc(100% - 18px);padding:14px 15px}
  #floor-lab .guide-mark{width:42px;height:42px;border-radius:13px;font-size:18px}
  #floor-lab .action-guide strong{font-size:16px}
  #floor-lab .action-guide p span{font-size:13px}
  #floor-lab:not([data-mode="floor"]) .action-guide [data-guide-text]{display:none}
  #floor-lab .table-task{font-size:18px}
  #floor-lab .lesson-hint{font-size:15px}
  #floor-lab .result{grid-template-columns:minmax(0,1fr);grid-template-areas:"kicker" "equation" "explain";gap:3px;margin:8px 0 6px;padding:11px 13px;border-radius:17px}
  #floor-lab .result-kicker{font-size:13px}
  #floor-lab .equation{min-height:34px;font-size:clamp(27px,7vw,32px)}
  #floor-lab .explanation summary{min-width:0;min-height:44px;justify-content:flex-start;padding:7px 11px}
  #floor-lab .console-bottom{grid-template-columns:minmax(0,1fr);gap:7px;margin-top:7px}
  #floor-lab .status{font-size:13px}
  #floor-lab .command-drawer>summary{min-height:48px;font-size:15px}
  #floor-lab .command-drawer-body{gap:10px;padding:11px}
  #floor-lab .operation-steps{font-size:14px}
  #floor-lab .control-hint{font-size:13px}
  #floor-lab .view-controls{gap:5px;flex-wrap:wrap}
  #floor-lab .view-controls>span{width:100%;font-size:13px}
  #floor-lab .view-controls button{min-width:44px;min-height:44px;font-size:14px}
  #floor-lab .operation-help>summary,#floor-lab .recipient-details>summary,#floor-lab .small-details summary{min-height:46px;font-size:14px}
  #floor-lab .settings{gap:10px;padding:8px 0}
  #floor-lab .settings label,#floor-lab .setup-picker{font-size:14px}
  #floor-lab input,#floor-lab select{min-height:46px;font-size:16px}
  #floor-lab .settings button,#floor-lab .utility button{min-height:46px;font-size:14px}
  #floor-lab .settings .primary{min-height:50px;font-size:15px}
  #floor-lab .booth-switch>summary{min-height:44px;font-size:13px}
  #floor-lab .booth-modes button{min-height:46px;font-size:14px}
  #floor-lab .activity-menu>summary{min-height:44px;font-size:13px}
  #floor-lab .lab-footer{font-size:9px}
}
@media(max-width:380px){
  #floor-lab .brand{font-size:9px}
  #floor-lab .brand>span:last-child{font-size:9px}
  #floor-lab .free{font-size:9px}
  #floor-lab .title-line h1{font-size:20px}
  #floor-lab .action-guide{gap:8px}
  #floor-lab .action-guide strong{font-size:15px}
  #floor-lab .operation-steps{gap:2px;font-size:13px}
  #floor-lab .control-hint{font-size:12px}
}
@media(hover:none),(pointer:coarse){
  #floor-lab .world-action{opacity:0;pointer-events:none;transform:scale(.94);transition:none}
  #floor-lab .world-action:focus-visible{opacity:1;pointer-events:auto;transform:scale(1);translate:-50% calc(-50% - 54px)}
}

/* 2026-09-23: readable room signs and a visible, step-by-step card path. */
#floor-lab .place-link{
  display:grid;grid-template-columns:1fr auto;grid-template-areas:"level place" "title title";
  align-content:center;align-items:center;gap:5px 8px;width:min(190px,40vw);min-width:148px;min-height:88px;
  padding:9px 12px 10px;border-width:1px 1px 4px;border-radius:18px;text-align:left;line-height:1.25
}
#floor-lab .place-link span{display:block;margin:0;font-weight:700}
#floor-lab .place-link .place-level{grid-area:level;width:max-content;padding:3px 8px;border:1px solid #ffffff9c;border-radius:999px;background:#fff9;color:#31564a;font-size:11px;font-weight:850;letter-spacing:.02em}
#floor-lab .place-link .place-title{grid-area:title;color:#203f3b;font-size:14px;font-weight:900;line-height:1.28;overflow-wrap:anywhere}
#floor-lab .place-link .place-side{grid-area:place;color:#536d62;font-size:10px;font-weight:750;white-space:nowrap}
#floor-lab .place-link[data-level="やさしい"] .place-level{background:#fff5d8;color:#73520d}
#floor-lab .place-link[data-level="ふつう"] .place-level{background:#e6f5fb;color:#285e72}
#floor-lab .place-link[data-level="むずかしい"] .place-level{background:#f2e9f7;color:#654675}
#floor-lab .place-link:focus-visible{z-index:8;outline:3px solid #e2a94b;outline-offset:3px}
#floor-lab:not([data-mode="floor"]) .lab-header{max-width:min(560px,calc(100% - 28px));padding:8px 12px 9px;border:1px solid #ffffffed;border-radius:19px;background:#fffdf7ed;box-shadow:0 10px 30px #23483a1c;backdrop-filter:blur(10px)}
#floor-lab:not([data-mode="floor"]) .design-promise{display:none}
#floor-lab:is([data-mode="mul"],[data-mode="div"]) .lesson-hint,#floor-lab:is([data-mode="mul"],[data-mode="div"]) .target-hint{display:none}
#floor-lab .card-route{display:flex;align-items:center;justify-content:space-between;gap:6px;margin:3px 0 7px;padding:6px 8px;border:1px solid #dbe5df;border-radius:14px;background:#f4f7f1;color:#536c60}
#floor-lab .card-route[hidden],#floor-lab .card-step-action[hidden]{display:none!important}
#floor-lab .card-route [data-route-step]{min-width:0;padding:5px 9px;border:1px solid transparent;border-radius:10px;background:#fffdf8;font-size:13px;font-weight:850;line-height:1.25;text-align:center;white-space:nowrap}
#floor-lab .card-route [data-route-state="current"]{border-color:#78a895;background:#deeee3;color:#1e604c;box-shadow:inset 0 -2px #95bda9}
#floor-lab .card-route [data-route-state="held"]{border-color:#d7ad58;background:#fff0c9;color:#715216}
#floor-lab .card-route [data-route-state="done"]{background:#e7efe5;color:#466455}
#floor-lab .route-arrow{color:#a0aea4;font-size:13px;font-weight:900}
#floor-lab .card-step-action{margin:0 0 7px}
#floor-lab .card-step-action button{width:100%;min-height:50px;border:1px solid #1e624e;border-bottom:4px solid #164a3b;border-radius:15px;background:linear-gradient(180deg,#318269,#236c55);color:#fff;font-size:16px;font-weight:900;letter-spacing:.015em;box-shadow:0 7px 18px #235f4a2b}
#floor-lab .card-step-action button:disabled{background:#73867b;border-color:#718078;box-shadow:none;opacity:.8}
#floor-lab .target-hint{border-radius:11px;background:#f7f5e9}
#floor-lab .world-label{padding:5px 9px;border:1px solid #ffffffd9;border-radius:12px;background:#fffdf2ed;color:#234b41;box-shadow:0 5px 15px #23453926;font-size:12px;font-weight:800;line-height:1.3}
#floor-lab .world-action{width:clamp(150px,18vw,176px);min-height:54px;border:2px solid #fff;border-bottom-width:4px;border-radius:15px;box-shadow:0 8px 20px #25493a2c,inset 0 1px #fff;font-size:14px;font-weight:850;line-height:1.3}
#floor-lab .world-action span{font-size:12px;font-weight:650}
#floor-lab [data-input="card-number"]:disabled,#floor-lab [data-input="card-people"]:disabled{color:#61766b;background:#edf1e9;opacity:.82}
@media(max-width:420px){
  #floor-lab .place-link{width:min(164px,calc(50vw - 26px));min-width:0;min-height:84px;padding:8px 9px;gap:4px 6px;border-radius:15px}
  #floor-lab .place-link .place-level{padding:2px 7px;font-size:10px}
  #floor-lab .place-link .place-title{font-size:12px;line-height:1.25}
  #floor-lab .place-link .place-side{font-size:9px}
  #floor-lab .world-action{width:min(160px,46vw);min-width:138px;min-height:50px;padding:7px 8px;font-size:13px}
  #floor-lab .world-action span{font-size:11px}
  #floor-lab .world-label{font-size:11px}
  #floor-lab:not([data-mode="floor"]) .lab-header{top:7px;left:9px;right:9px;max-width:none;width:calc(100% - 18px);padding:6px 9px 7px;border-radius:15px}
  #floor-lab .card-route{gap:3px;margin:2px 0 6px;padding:5px 6px}
  #floor-lab .card-route [data-route-step]{padding:5px 6px;font-size:12px}
  #floor-lab .route-arrow{font-size:11px}
  #floor-lab .card-step-action{margin-bottom:6px}
  #floor-lab .card-step-action button{min-height:48px;font-size:15px}
}
@media(hover:none),(pointer:coarse){
  #floor-lab[data-mode="mul"] .world-action,#floor-lab[data-mode="div"] .world-action{opacity:1;pointer-events:auto;transform:none}
}
@media(max-width:420px){
  #floor-lab:is([data-mode="mul"],[data-mode="div"]) .lab-console{max-height:min(40svh,340px)}
}
#floor-lab .status-visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}