:root{--ink:#19464b;--teal:#147b80;--gold:#ffcf6f;--cream:#fffaf0;--shell-rail:78px}body{background:#153f47;color:var(--ink)}button{border-radius:14px;border:2px solid #d4b97b;min-height:48px;font-size:16px;color:var(--ink);transition:transform .16s,background .16s,box-shadow .16s}button:hover{background:#fff0be;}button:focus-visible,input:focus-visible{outline:4px solid #147b80;outline-offset:3px}.topbar{background:#174e57;grid-template-columns:1fr auto auto;height:52px}.brand{font-size:16px}.rail{grid-template-columns:65px 1fr auto;background:#fff8ea;border-color:#d7c8aa;gap:8px;padding:8px 12px}.rail button{font-size:14px;min-height:46px;padding:0 10px}.navcluster,.teacher-tools{gap:5px}.stage{background:#f4e6cb;overflow:auto}.lesson-content-slot{height:100%}.scene-page{min-height:100%;height:100%;display:grid;grid-template-rows:auto minmax(390px,1fr) auto;isolation:isolate}.scene-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 26px;background:#fffaf0}.eyebrow{color:#957047;font-size:11px;font-weight:800;letter-spacing:2px;text-transform:uppercase}.scene-heading h1{margin:2px 0;font-size:clamp(24px,2.5vw,35px);line-height:1.15}.scene-heading p{margin:3px 0 0;font-size:15px}.mission-trail{display:flex;gap:7px;flex-wrap:wrap;max-width:42%;justify-content:flex-end}.mission-trail span{padding:7px 10px;border:1px solid #d7caa8;border-radius:20px;font-size:12px;background:#fff}.mission-trail .earned{background:#d7f0de;color:#246743;border-color:#7fa58e}.world{position:relative;min-height:390px;overflow:hidden;background:#eedfc5 url('assets/club.webp') center center/cover}.world:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#fff6df18,transparent 40%,#fff8e535);pointer-events:none}.ambient-glow{position:absolute;top:5%;left:7%;width:70px;height:70px;border-radius:50%;background:#ffdf8130;box-shadow:0 0 65px 30px #fff2b535;animation:sunlight 6s ease-in-out infinite;pointer-events:none}.character{position:absolute;bottom:4%;width:24%;height:74%;border:0;background:transparent!important;padding:0;z-index:2;overflow:visible;transition:filter .2s,transform .2s}.character img{width:100%;height:100%;object-fit:contain;object-position:bottom;filter:drop-shadow(0 12px 9px #23433735)}.character.left{left:5%}.character.right{right:5%}.character.center{left:5%;width:30%}.character:not(.active){filter:saturate(.88)}.character.active img{animation:friendWave .65s ease-in-out;filter:drop-shadow(0 0 14px #ffdc75)}.character .person-tag{position:absolute;bottom:0;left:50%;transform:translateX(-50%);white-space:nowrap;background:#fff9ea;padding:8px 17px;border:2px solid #b89a58;border-radius:24px;font-size:17px;box-shadow:0 4px 0 #173f4920}.character:focus-visible{outline-offset:-10px;border-radius:80px}.tap-dot{position:absolute;top:41%;left:45%;width:28px;height:28px;border:4px solid #fff4b7;border-radius:50%;background:#edab4f;box-shadow:0 0 0 8px #ffcf694a;animation:tapGlow 2.4s infinite;pointer-events:none}.character.active .tap-dot{display:none}.bubble{position:absolute;top:5%;left:31%;width:38%;z-index:4;background:#fffdf5;border:3px solid #b49359;border-radius:27px;padding:18px 20px;text-align:center;box-shadow:0 7px 0 #82694522;animation:bubbleIn .35s ease-out}.bubble:after{content:'';position:absolute;left:14%;bottom:-15px;width:24px;height:24px;background:#fffdf5;border-right:3px solid #b49359;border-bottom:3px solid #b49359;transform:rotate(45deg)}.bubble .speaker{display:block;font-size:12px;letter-spacing:1.6px;color:#95704e;text-transform:uppercase;margin-bottom:5px}.bubble strong{display:block;font-size:clamp(21px,2.2vw,31px);line-height:1.2}.bubble small{display:block;margin-top:8px;font-size:16px;color:#557375}.bubble.reply{top:auto;bottom:8%;left:32%;width:36%;border-color:#5ba897}.bubble.reply:after{left:auto;right:8%;border-color:#5ba897}.choice-tray{position:absolute;left:30%;width:40%;top:40%;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;padding:13px;background:#fff7e8e8;border:2px solid #e7c88a;border-radius:22px;z-index:5;box-shadow:0 8px 25px #5a452819}.choice-tray button{min-width:80px;font-size:21px;padding:13px 17px;min-height:60px;background:#fffdfa}.choice-tray button.selected{background:#d5efeb;border-color:#3c9181;box-shadow:0 0 0 4px #71c7ad25}.choice-tray .large-number{width:70px;height:74px;border-radius:50%;font-size:29px;background:#ffe6b2}.scene-footer{background:#fffaf0;border-top:1px solid #e3cfa6;padding:10px 25px;display:flex;gap:12px;align-items:center;justify-content:space-between;min-height:67px}.feedback{font-size:16px;margin:0;max-width:65%}.feedback.success{color:#2b7750;font-weight:800}.teacher-accept{background:#176d73;color:white;border-color:#176d73;min-width:166px}.teacher-accept:hover{background:#115a61}.teacher-accept:disabled{background:#c9d9d3;border-color:#c9d9d3;color:#4b6563;opacity:.7}.hint-line{color:#a17322}.welcome-board{position:absolute;left:32%;top:8%;width:36%;z-index:4;background:#fffaf0f5;border:4px solid #d2af66;border-radius:25px;padding:24px;text-align:center;box-shadow:0 10px 0 #886d3722;transform:rotate(-1deg)}.welcome-board h2{font-size:clamp(26px,3vw,40px);margin:5px 0 15px}.welcome-board p{font-size:18px;margin:8px 0}.primary{background:#187a80;border-color:#187a80;color:white;padding:12px 20px}.primary:hover{background:#12636c}.club-pass{display:inline-block;border:2px dashed #c5a35b;border-radius:16px;padding:16px 20px;margin:15px 0;background:#fff3d2;font-size:23px;line-height:1.5}.stamp{color:#2b7750;border:3px double #548975;border-radius:50%;width:85px;height:85px;display:grid;place-items:center;transform:rotate(-12deg);font-size:15px;font-weight:900;background:#edfff2;animation:stampIn .48s ease-out}.stamp.small{width:50px;height:50px;font-size:11px}.map-board{position:absolute;left:34%;top:25%;width:40%;height:65%;border:8px solid #ccb47a;background:#e7f5eb;border-radius:20px;z-index:3;box-shadow:0 10px 0 #80724d25;overflow:hidden}.map-board svg{width:100%;height:100%}.map-title{position:absolute;top:10px;left:14px;font-size:13px;letter-spacing:2px;font-weight:800;color:#437b74}.city-pin{position:absolute;background:#fffaf0;border:3px solid #cb9757;min-height:55px;padding:8px 13px;z-index:4;font-size:18px;box-shadow:0 5px 0 #7d643923}.city-pin[data-city="Beijing"]{top:17%;left:49%}.city-pin[data-city="Shenzhen"]{bottom:9%;left:36%}.city-pin[data-city="Shanghai"]{top:53%;right:2%}.city-pin.selected{background:#ffdc80;border-color:#a97930;animation:pinLight .8s ease-out}.city-pin:before{content:'●';color:#d18f43;margin-right:7px}.city-world .character.left{left:1%;width:22%}.city-world .character.right{right:1%;width:21%}.city-world .bubble{top:4%;left:27%;width:47%}.city-world .bubble.reply{top:auto;bottom:4%;left:2%;width:29%;font-size:20px}.city-world .bubble.reply strong{font-size:22px}.passport-board{position:absolute;left:35%;top:10%;width:47%;z-index:4;background:#fff9e8;border:5px solid #d0b678;border-radius:24px;padding:18px 24px;box-shadow:0 12px 0 #8b714b22;transform:rotate(1deg)}.passport-board h2{margin:0 0 13px;font-size:25px;color:#805e38}.passport-board label{display:block;font-size:15px;font-weight:800;margin:10px 0}.passport-board input{display:block;width:100%;min-height:48px;margin-top:5px;font:22px 'Segoe UI',sans-serif;color:#17464b;background:#fffef7;border:2px solid #d7be87;border-radius:10px;padding:7px 12px}.passport-board input:invalid:not(:placeholder-shown){border-color:#be806a}.passport-board .primary{margin-top:8px}.passport-sentence{font-size:23px;padding:7px 0;border-bottom:1px dashed #d5bc81}.passport-board .stamp{position:absolute;right:20px;bottom:15px}.evidence-board{position:absolute;left:35%;top:9%;width:56%;background:#fffdf0;border:4px solid #d3b57a;border-radius:22px;padding:18px;z-index:4;box-shadow:0 10px 0 #8f764b22}.profile-line{display:block;width:100%;padding:9px 14px;text-align:left;font-size:23px;border:0;background:transparent;min-height:52px}.profile-line.marked{background:#fff0b7}.evidence-board .choice-tray{position:static;width:100%;margin-top:10px}.evidence-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.evidence-heading h2{font-size:23px;margin:0}.profile-slots{display:flex;gap:8px;flex-wrap:wrap}.profile-slots span{padding:7px 12px;border:1px dashed #aa8b4f;border-radius:10px;background:#fff6dc;font-size:17px}.matching-board{position:absolute;left:26%;top:7%;width:62%;z-index:4;background:#fff9e8;border:5px solid #cfaf71;padding:17px;border-radius:25px;box-shadow:0 9px 0 #92774e22}.match-row{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:9px 0}.match-question,.match-answer{font-size:20px;min-height:66px;text-align:left;padding:10px 14px}.match-question.selected{background:#ffdfa1;border-color:#b37c34}.match-answer.locked,.match-question.locked{background:#d8f0de;border-color:#6b9f7e}.match-row small{font-size:13px}.match-link{font-size:14px;color:#437b58;margin:3px 0}.match-world .character{left:1%;width:23%;height:66%}.dialogue-log{position:absolute;left:30%;top:8%;width:43%;height:78%;overflow:auto;z-index:4;padding:14px;background:#fff9e7e8;border:3px solid #d5b576;border-radius:22px}.turn{padding:10px 15px;border-radius:18px;background:#fffefa;margin:7px 0;border:1px solid #dfc99e;font-size:22px;line-height:1.25;animation:bubbleIn .3s ease-out}.turn.student{margin-left:18%;background:#e2f2e7;border-color:#86b59c}.turn small{display:block;color:#6e867e;font-size:12px;text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}.turn.current{border:3px solid #ba914f}.dialogue-log .primary{display:block;margin:10px auto}.dialogue-log .hint-line{font-size:18px}.review-board{position:absolute;left:28%;top:10%;width:59%;z-index:4;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.review-card{background:#fff9e9;border:4px solid #d6b879;padding:18px 12px;text-align:center;min-height:225px;border-radius:22px;box-shadow:0 8px 0 #8c704322}.review-card h2{font-size:22px;margin:10px 0}.review-icon{font-size:48px;display:block}.review-card p{font-size:20px;line-height:1.3}.review-card.selected{background:#e5f3e5;border-color:#7faa92}.toast{position:absolute;z-index:10;right:22px;bottom:25px;display:flex;gap:15px;align-items:center;background:#fff7dceF;border:2px solid #caa457;border-radius:20px;padding:12px 18px;animation:stampIn .45s ease-out;font-weight:800}.sparkles{position:absolute;inset:0;pointer-events:none;z-index:8;overflow:hidden}.sparkles i{position:absolute;left:var(--x);top:45%;color:#f4b54a;font-size:26px;animation:sparkFlight .9s ease-out both;animation-delay:var(--delay)}.notes-drawer{color:#19464b}.shell-note-section h3{font-size:15px;color:#6b895f}.shell-note-section p{line-height:1.5}.audio-status{font-size:12px;color:#d3efec}.page-index{color:#997344;font-size:13px;white-space:nowrap}[hidden]{display:none!important}@keyframes sunlight{50%{opacity:.35;transform:scale(1.2)}}@keyframes tapGlow{50%{box-shadow:0 0 0 15px #ffcf6910}}@keyframes bubbleIn{from{opacity:0;transform:translateY(9px) scale(.95)}to{opacity:1;transform:none}}@keyframes friendWave{30%{transform:rotate(-3deg) translateY(-8px)}65%{transform:rotate(2deg)}}@keyframes stampIn{from{transform:scale(1.8) rotate(-12deg);opacity:0}to{transform:scale(1) rotate(-12deg);opacity:1}}@keyframes pinLight{50%{box-shadow:0 0 25px 15px #ffcc6660}}@keyframes sparkFlight{from{opacity:0;transform:translateY(30px) rotate(0)}30%{opacity:1}to{opacity:0;transform:translateY(-160px) rotate(150deg)}}
.welcome-board{top:5%;padding:17px}.welcome-board h2{margin:3px 0 12px}.club-pass{margin:10px 0;padding:12px 16px}.map-board{top:37%;height:58%}.evidence-board{top:4%;padding:14px}.profile-line{min-height:46px;padding:6px 12px;font-size:22px}.evidence-board .choice-tray{padding:9px;margin-top:7px}.evidence-board .choice-tray button{min-height:52px;padding:9px 17px}.evidence-board>p{margin:11px 0}.matching-board{max-height:90%;overflow:auto}.character{height:83%}.character.speaking img{animation:speakingBob .7s ease-in-out infinite}@keyframes speakingBob{50%{transform:translateY(-5px)}}
@media(max-width:1100px){.rail{display:flex;flex-wrap:wrap;justify-content:center;height:auto}.progress{position:static}.lesson-shell{grid-template-rows:52px minmax(0,1fr) 113px}.rail button{min-height:44px}.scene-heading{padding:10px 16px}.scene-heading h1{font-size:27px}.mission-trail{max-width:43%;gap:4px}.mission-trail span{font-size:11px;padding:5px 7px}.bubble{padding:13px}.bubble strong{font-size:23px}.choice-tray{gap:7px;left:28%;width:44%}.choice-tray button{padding:9px 13px;min-width:65px}.scene-footer{padding:9px 16px}.passport-board{width:53%;left:34%;padding:15px}.match-question,.match-answer{font-size:18px}.review-card{padding:14px 9px}.review-card h2{font-size:19px}.review-card p{font-size:18px}}
@media(max-width:700px){.lesson-shell{grid-template-rows:46px minmax(0,1fr) 170px}.topbar{height:46px;padding:0 10px}.brand{font-size:12px}.scene-page{height:auto;min-height:100%;grid-template-rows:auto 580px auto}.scene-heading{align-items:flex-start;flex-direction:column;gap:7px}.scene-heading h1{font-size:26px}.mission-trail{max-width:100%;justify-content:flex-start}.world{min-height:580px;background-position:center}.character{height:43%;width:36%;bottom:3%}.character.left{left:0}.character.right{right:0}.character.center{left:0;width:35%;height:42%}.bubble{left:6%;width:88%;top:4%}.bubble.reply{left:27%;width:68%;bottom:30%;top:auto}.choice-tray{top:27%;left:7%;width:86%}.welcome-board{left:6%;top:5%;width:88%;padding:16px}.welcome-board h2{font-size:31px}.welcome-board p{font-size:17px}.scene-footer{align-items:flex-start;flex-direction:column}.feedback{max-width:100%;font-size:15px}.teacher-accept{width:100%}.map-board{top:22%;left:8%;width:84%;height:51%}.city-world .bubble{left:5%;width:90%}.city-world .character{bottom:0;height:25%;width:26%}.city-world .bubble.reply{left:26%;width:49%;bottom:4%}.city-world .bubble.reply strong{font-size:17px}.passport-board{left:8%;top:4%;width:84%;padding:15px}.card-world .character{height:22%;bottom:0}.evidence-board{left:5%;width:90%;top:4%;padding:13px}.read-world .character{height:24%;bottom:0}.profile-line{font-size:20px}.matching-board{left:4%;top:4%;width:92%;padding:10px}.match-row{gap:7px}.match-question,.match-answer{font-size:17px;min-height:70px;padding:9px}.match-world .character{height:24%;bottom:0;width:28%}.dialogue-log{left:5%;top:4%;width:90%;height:71%}.talk-world .character{height:24%;bottom:0}.turn{font-size:21px}.review-board{left:6%;top:4%;width:88%;grid-template-columns:1fr;gap:10px}.review-card{min-height:120px;padding:10px;display:grid;grid-template-columns:45px 1fr;align-items:center}.review-icon{font-size:32px;grid-row:1/3}.review-card h2{margin:2px}.review-card p{margin:3px}.review-world .character{height:18%;bottom:0}.toast{right:10px;bottom:15px;padding:8px 12px;font-size:14px}.rail{gap:4px;padding:6px}.navcluster,.teacher-tools{flex-wrap:wrap;justify-content:center}.rail button{padding:0 8px}.mission-trail span{font-size:10px}}
.name-world .bubble.reply[data-speaker="Jerry"],.age-world .bubble.reply[data-speaker="Jerry"]{left:18%;width:32%;bottom:9%}.name-world .bubble.reply[data-speaker="Lynn"],.age-world .bubble.reply[data-speaker="Lynn"]{left:50%;width:32%;bottom:9%}.bubble.reply[data-speaker="Jerry"]:after{left:8%;right:auto}.bubble.reply[data-speaker="Lynn"]:after{right:8%;left:auto}.city-world .bubble.reply[data-speaker="Lynn"]{left:70%;width:29%;bottom:5%}.name-world .character.active,.age-world .character.active{z-index:3}.name-world .bubble.reply,.age-world .bubble.reply{z-index:6}.read-world .character.center{height:85%}.name-world .choice-tray button.selected,.age-world .choice-tray button.selected{animation:pinLight .55s ease-out}
@media(max-width:700px){.name-world .bubble.reply[data-speaker],.age-world .bubble.reply[data-speaker]{left:27%;width:68%;bottom:30%}.name-world .bubble.reply[data-speaker="Jerry"],.age-world .bubble.reply[data-speaker="Jerry"]{left:5%}.city-world .bubble.reply[data-speaker="Lynn"]{left:26%;width:49%;bottom:4%}.read-world .character.center{height:24%}}
.review-icon svg{display:block;width:110px;height:80px;margin:auto}.review-card small{font-size:14px;color:#7c6945}@media(max-width:700px){.review-icon svg{width:45px;height:65px}.review-card small{grid-column:2}}
.card-world .passport-board{top:3%;padding:12px 22px}.passport-board label{margin:7px 0}.passport-board input{min-height:44px;padding:6px 12px;font-size:20px}.passport-board h2{font-size:24px;margin-bottom:9px}@media(max-width:700px){.card-world .passport-board{top:4%;padding:15px}.passport-board input{min-height:48px}}
.match-answer{touch-action:none;user-select:none;cursor:grab}.match-answer:active{cursor:grabbing}.drop-target{outline:4px solid #dfa94b;outline-offset:3px;background:#fff0be}.drag-answer{position:fixed;z-index:1000;pointer-events:none;padding:13px 18px;background:#fff1b8;border:3px solid #ac853a;border-radius:16px;box-shadow:0 10px 25px #19464b33;font-size:20px;color:#19464b}
@media(max-width:700px){.lesson-shell{grid-template-rows:46px minmax(0,1fr) 194px}.rail{height:194px;flex-wrap:nowrap;justify-content:flex-start}.navcluster,.teacher-tools{flex-shrink:0;max-width:100%;width:100%}.progress{flex-shrink:0}.rail button{min-height:44px}.teacher-tools button{font-size:12px}}
.field-picker{display:flex;align-items:center;gap:7px;margin-top:5px}.field-picker input{flex:1;min-width:0;margin-top:0}.field-picker button{padding:0 10px;font-size:16px;flex-shrink:0}.field-picker button.selected{background:#d9eddd;border-color:#6f9f81}.field-picker input[name=age]{flex:0 1 110px}@media(max-width:700px){.field-picker{gap:4px}.field-picker button{padding:0 7px;font-size:13px}.field-picker input[name=city]{font-size:16px}}
.passport-board,.dialogue-log,.bubble{overflow-wrap:anywhere}

.role-voice-badge{position:absolute;right:16px;top:12px;max-width:240px;padding:5px 10px;border-radius:12px;background:#fff9df;color:#28685f;font-size:14px;font-weight:700;pointer-events:none;z-index:8}.role-voice-badge:empty{display:none}