.room-rail{display:grid;grid-template-columns:repeat(5,1fr);border-bottom:var(--line);margin-top:14px;gap:4px}.room-rail a{display:flex;align-items:center;gap:9px;min-height:55px;text-decoration:none;border-bottom:3px solid transparent;padding:10px 12px;font-family:'Shippori Mincho B1',serif;font-size:22px;font-weight:800;line-height:1.4}.room-rail a span{font-family:'Noto Sans JP',sans-serif;font-size:14px;font-weight:700}.room-rail a[aria-current]{background:var(--gold);border-color:var(--ink)}.room-rail a:hover{background:#e8b13d66}.room-rail a[href='#safe'][aria-current]{background:var(--blue);color:var(--paper)}
.small-heading{font-family:'Shippori Mincho B1',serif;font-size:20px;line-height:1.5;margin:24px 0 14px}.clue-buttons,.teacher-questions,.safe-choices{display:grid;gap:10px;margin:22px 0 20px}.clue-buttons button,.teacher-questions button,.safe-choices button{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:13px 15px;min-height:50px;border:var(--line);background:var(--paper);font-size:16px;font-weight:700;text-align:left;line-height:1.6}.clue-buttons button[aria-expanded=true],.teacher-questions button[aria-pressed=true],.safe-choices button[aria-pressed=true]{background:var(--gold)}.clue-reveal{border-left:3px solid var(--blue);padding:2px 0 3px 13px;margin:17px 0}.clue-reveal strong{font-size:14px}.clue-reveal p{font-size:16px}.route-options{display:grid;gap:10px}.route-option{display:grid;grid-template-columns:1fr auto;gap:3px 10px;min-height:64px;padding:11px 14px;text-align:left;border:var(--line);background:var(--paper)}.route-option strong{font-size:17px;font-family:'Shippori Mincho B1',serif}.route-option span{font-size:14px}.route-option span:last-child{grid-area:1/2/3/3;align-self:center;font-size:24px}.route-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin:22px 0}.route-summary span{border:var(--line);background:var(--gold);text-align:center;padding:10px 5px;font-size:12px;line-height:1.8}.route-summary strong{font-family:'Shippori Mincho B1',serif;font-size:16px}.source-mini{font-size:12px!important;color:#655d50;margin-top:17px}.activity-after{display:flex;flex-wrap:wrap;gap:5px 16px;margin-top:18px;border-top:var(--line);padding-top:9px}.study-cards{display:grid;gap:13px;margin:23px 0}.study-card{display:grid;grid-template-columns:70px 1fr;gap:14px;align-items:center;background:var(--paper);border:var(--line);padding:15px;box-shadow:3px 3px 0 var(--ink)}.study-card strong{font-family:'Shippori Mincho B1',serif;font-size:25px;letter-spacing:.06em}.study-card p{font-size:16px;line-height:1.7}.recall-options{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:24px 0 15px}.recall-options button{background:var(--gold);border:var(--line);min-height:72px;font-family:'Shippori Mincho B1',serif;font-size:23px;font-weight:800;padding:10px 5px;box-shadow:2px 2px 0 var(--ink)}.peek-card{border:var(--line);background:var(--paper);margin-top:18px;padding:16px;font-size:14px}.peek-card strong{display:block;font-family:'Shippori Mincho B1',serif;font-size:30px;margin-top:6px}.recall-feedback,.observation{margin:18px 0;padding:16px;border-left:3px solid var(--blue);background:#fff8e9}.recall-feedback strong,.observation strong{font-size:17px;line-height:1.7}.recall-feedback p,.observation p{font-size:16px;margin-top:7px}.review-list{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.review-list span{border:var(--line);padding:10px 18px;background:var(--gold);font-family:'Shippori Mincho B1',serif;font-weight:800;font-size:25px}.student-line{border:var(--line);padding:16px 18px;background:var(--paper);margin:20px 0}.student-line span{font-size:12px;border-bottom:var(--line);padding-bottom:5px}.student-line p{margin-top:10px;font-size:18px;line-height:1.8}.dialogue-reply{padding:15px 18px;background:var(--blue);color:var(--paper);margin:20px 0}.dialogue-reply small{font-size:12px}.dialogue-reply p{font-size:16px;margin-top:8px}.grammar-pair{background:var(--paper);border:var(--line);padding:17px;margin:22px 0}.grammar-pair p{font-size:23px!important}.grammar-pair em{font-style:normal;color:var(--shu);border-bottom:2px solid var(--shu)}.safe-message{border-top:var(--line);border-bottom:var(--line);padding:22px 0;margin:22px 0}.safe-message h3{font-family:'Shippori Mincho B1',serif;font-size:23px;line-height:1.5;margin-bottom:14px}.three-ma{display:flex;gap:10px;justify-content:center;margin:24px 0 12px}.three-ma span{background:var(--blue);color:var(--paper);width:76px;height:76px;display:grid;place-items:center;grid-template-columns:1fr 1fr;font-family:'Shippori Mincho B1',serif;font-size:27px;border-radius:50%;padding:10px}.three-ma strong{font-weight:600}body[data-room=question] .door,body[data-room=teacher] .door{background-color:var(--blue)}body[data-room=memory] .door{background-color:var(--shu)}body[data-room=safe] .door{background-color:var(--gold);color:var(--ink)}body[data-room=safe] .steps{display:none}body[data-room=memory] h1,body[data-room=teacher] h1{font-size:clamp(36px,4.8vw,74px)}.stage-tickets{flex-wrap:wrap}.stage-ticket strong{white-space:nowrap}.stage-ticket{font-size:12px}.ledger-footer{flex-wrap:wrap}.ledger-footer .text-button{font-size:12px}.stage-continue{font-size:14px}.work .activity-after p{font-size:16px}
@media(max-width:1000px){.room-rail a{padding:10px 7px;gap:6px}.room-rail a span{font-size:12px}.stage-ticket strong{font-size:18px}.stage-tickets{max-width:74%}}
@media(max-width:760px){.room-rail{grid-template-columns:repeat(5,minmax(0,1fr));gap:2px;margin-top:12px}.room-rail a{flex-direction:column;gap:4px;padding:10px 2px;text-align:center;font-size:19px;min-height:80px}.room-rail a span{font-size:12px;font-weight:500;line-height:1.5}.chapter p{font-size:12px;gap:8px;flex-wrap:wrap}.chapter-mark{font-size:12px}.chapter{margin:15px 0}body[data-room=memory] h1,body[data-room=teacher] h1{font-size:clamp(34px,8.5vw,65px)}.clue-buttons button,.teacher-questions button,.safe-choices button{font-size:16px;padding:11px 12px}.study-card{grid-template-columns:58px 1fr;padding:13px;gap:10px}.study-card strong{font-size:24px}.recall-options{gap:7px}.recall-options button{font-size:22px}.route-summary strong{font-size:15px}.route-summary span{padding:9px 3px}.stage-tickets{gap:7px;max-width:72%;bottom:12px}.stage-ticket{padding:6px 9px}.stage-ticket strong{font-size:18px}.activity-after{display:grid;gap:4px}.activity-after .text-button{text-align:left;white-space:normal}.work .steps li{font-size:12px}.stage-caption p{font-size:14px}.ledger-top{gap:9px}.ledger-top span:last-child{font-size:12px}.three-ma{gap:7px}.three-ma span{width:66px;height:66px;font-size:23px}.map-half span{display:none}}
@media(max-width:350px){.room-rail a{min-height:90px}.room-rail a span{font-size:12px}.chapter p{font-size:12px}.stage-ticket{padding:5px 7px}.stage-ticket strong{font-size:16px}.route-summary{grid-template-columns:1fr}.route-summary span{display:flex;justify-content:space-between;padding:8px 12px}.route-summary br{display:none}}
.room-rail{position:sticky;top:0;z-index:20;background:var(--paper)}.room-heading{scroll-margin-top:110px}.work{scroll-margin-top:105px}dialog{z-index:100}.work:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
@media(min-width:761px){.theatre{position:sticky;top:78px;align-self:start}}