@font-face{font-family:'Rii Cookie';src:url('fonts/RiiCookieR.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
:root{color-scheme:light;--bg:#faf8f2;--paper:#fff;--ink:#333333;--muted:#625d51;--accent:#f0b71f;--accent-hover:#e5aa0e;--soft:#f5f0e3;--control:#eee5d0;--error:#b9382b;--radius:18px;--shadow:0 3px 16px #192b3309,0 1px 3px #192b3306;--focus:#216c9a}
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57%/cover;height:248px}.x-guide{display:flex;align-items:center;gap:16px;padding:24px}.x-avatar{display:grid;place-items:center;flex-shrink:0;width:40px;height:40px;background:var(--soft);color:var(--ink);border-radius:50%;font-size:19px;font-weight:600}.x-guide p{font-size:15px;line-height:1.65}.x-guide small{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}.next-puzzle{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:80px;padding:24px 32px;margin-top:24px;border-radius:18px;background:var(--accent);color:var(--ink);font-size:17px;font-weight:600;transition:background .18s,transform .18s;box-shadow:0 8px 24px #9f780d18}.next-puzzle:hover{background:var(--accent-hover)}.next-puzzle:active{transform:scale(.99)}.next-action{display:flex;align-items:center;gap:16px;font-size:14px;font-weight:400;white-space:nowrap}.home-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}.tool{border:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:24px 16px;background:var(--paper);color:var(--ink);border-radius:18px;font-size:15px;min-height:112px;box-shadow:var(--shadow);transition:background .18s,transform .18s}.tool svg{width:28px;height:28px}.tool:hover{background:#fdf0ce;transform:translateY(-2px)}.tool.locked{background:#eeeae0;color:var(--muted);box-shadow:none;transform:none}.btn{border:0;display:inline-flex;justify-content:center;align-items:center;gap:16px;min-height:48px;padding:16px 24px;border-radius:12px;background:var(--accent);color:var(--ink);font-size:15px;font-weight:500;line-height:1.5;transition:background .18s}.btn:hover{background:var(--accent-hover)}.btn.secondary{background:var(--control);color:var(--ink)}.btn.secondary:hover{background:#e8dbbb}.btn:disabled{background:var(--soft);color:var(--muted)}.back{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--muted);margin-bottom:24px}.page-title{margin-bottom:32px}.inventory{display:grid;grid-template-columns:1.3fr 1fr;gap:32px}.section-title{font-size:22px;color:var(--ink);font-weight:400;margin-bottom:16px}.list{display:grid;gap:16px}.list-card{padding:24px;background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow)}.puzzle-link{display:flex;justify-content:space-between;gap:16px;align-items:center}.puzzle-link:hover{background:var(--soft)}.puzzle-link small{display:block;margin-top:8px}.badge{padding:8px 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.btn{width:100%;padding:16px 8px;margin-top:auto;font-size:14px}.room.locked{background:#eeeae0;box-shadow:none;color:var(--muted)}.camera-box{position:relative;background:#26251f;border-radius:24px;overflow:hidden;aspect-ratio:4/3;max-height:55dvh}.camera-box video,.camera-box canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.camera-placeholder{position:absolute;inset:0;display:grid;place-items:center;padding:24px;color:#f5f0e3;text-align:center;pointer-events:none}.camera-placeholder svg{width:48px;height:48px;opacity:.7}.camera-placeholder:empty{display:none}.camera-status{font-size:14px;color:var(--muted);margin-top:16px;min-height:24px}.camera-actions{display:flex;gap:8px;margin-top:16px}.camera-actions .btn:first-child{flex:1}.result{text-align:center;background:var(--paper);border-radius:24px;padding:48px 24px;box-shadow:var(--shadow)}.result img{height:144px;width:auto;margin-bottom:24px}.result p{color:var(--muted);margin-top:16px;font-size:15px}.result .btn{margin-top:32px}.reset{display:block;min-height:44px;margin:24px auto 0;background:transparent;border:0;color:var(--muted);font-size:13px}.kocho-button{position:fixed;right:24px;bottom:24px;z-index:6;border:0;border-radius:40px;display:flex;align-items:center;gap:8px;padding:8px 16px 8px 8px;background:var(--paper);box-shadow:0 4px 24px #192b3312;color:var(--muted);font-size:13px;min-height:48px}.kocho-button img{height:40px;width:32px;object-fit:contain}dialog{border:0;padding:32px;width:min(480px,calc(100vw - 32px));max-height:85dvh;border-radius:24px;background:var(--bg);color:var(--ink);box-shadow:0 16px 48px #192b3324}dialog::backdrop{background:#192b3366;backdrop-filter:blur(4px)}.dialog-close{position:absolute;right:8px;top:8px;width:44px;height:44px;font-size:28px;border:0;background:transparent;color:var(--muted)}.kocho-intro{display:flex;align-items:center;gap:24px;margin-bottom:24px}.kocho-intro img{height:80px;width:auto}.kocho-intro h2{font-size:24px}#help-content{display:grid;gap:8px}.start{background:var(--paper);border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}.start-photo{height:320px;background:url('assets/classroom.jpg') center/cover}.start-copy{display:flex;flex-direction:column;align-items:center;gap:24px;padding:40px}.start-copy h1{font-size:36px}.start-copy .btn{width:100%;max-width:320px}.storage-warning{padding:16px;background:#fff8d1;font-size:14px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.objective-dot{display:none}body[data-screen="start"] .objective{max-width:480px;margin:auto;position:relative;padding-block:16px}body[data-screen="start"] .objective strong{font-size:14px}body[data-screen="start"] .objective small,body[data-screen="start"] .progress{display:none}
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@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media(forced-colors:active){.tool,.next-puzzle,.btn,details,dialog,.scene,.puzzle,.room{outline:1px solid CanvasText}}

.objective{padding-top:max(24px,env(safe-area-inset-top))}main{padding-bottom:calc(104px + env(safe-area-inset-bottom))}.objective strong{font-family:'Rii Cookie',sans-serif;font-weight:400;font-size:21px;line-height:1.35}.next-puzzle>span:first-child{font-family:'Rii Cookie',sans-serif;font-size:23px;font-weight:400}.next-action{color:var(--ink)}.tool svg{stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.tool:active,.btn:active{transform:scale(.98)}.tool:hover{transform:none}.kocho-button{min-height:56px}body:has(.answer-form input:focus) .kocho-button{display:none}.answer-row input{scroll-margin-top:144px}.camera-box{max-height:50svh}.room{grid-template-columns:24px 1fr}.room .btn,.room small{grid-column:2}.room .btn{width:auto;justify-self:start}.objective strong{overflow-wrap:anywhere}.objective>div>span{min-width:0}@media(max-width:350px){.objective{padding-inline:16px}.progress{padding:8px}.next-puzzle{padding:16px;gap:8px}.next-action{gap:8px}.next-puzzle>span:first-child{font-size:21px}}