:root{--navy:#192443;--ink:#263251;--muted:#677392;--line:#e0e6f2;--primary:#6559e6;--lav:#f2edff;--mint:#19ae97;--gold:#f7bb49;--coral:#f27177;--paper:#fff;--shadow:0 22px 75px rgba(38,44,101,.11);--round:24px}
*{box-sizing:border-box}html{min-width:320px;scroll-behavior:smooth}body{margin:0;font-family:ui-rounded,'Trebuchet MS',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:radial-gradient(ellipse at 2% 2%,#e9e6ff 0%,transparent 26%),radial-gradient(ellipse at 92% 80%,#dcf7eb 0%,transparent 30%),#f6f8ff;min-height:100vh}button,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid #d97833;outline-offset:3px}a{color:inherit;text-decoration:none}.app{max-width:1390px;margin:auto;padding:20px 28px 38px}.header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.logo{display:flex;align-items:center;gap:11px;text-align:left}.logo-icon{background:#6457e5;color:white;box-shadow:0 7px 17px #7567d44d;font-size:25px;border-radius:16px;width:52px;height:52px;display:grid;place-items:center}.brand{font-weight:1000;font-size:18px;letter-spacing:-.5px;line-height:1.1}.brand small{font-size:10px;color:var(--muted);letter-spacing:2px;display:block;margin-top:5px}.header-actions{display:flex;align-items:center;flex-wrap:wrap;justify-content:flex-end;gap:9px}.pill,.icon-button{border:1px solid #e0e6f3;background:#fff;color:#465276;border-radius:14px;padding:12px 15px;font-weight:850;box-shadow:0 4px 14px #33376b08}.pill:hover,.icon-button:hover{border-color:#a59ff0;background:#f8f7ff}.icon-button{min-width:45px}.accent{color:#7769e7}.tiny{font-size:12px}.muted{color:var(--muted)}.mini{font-size:13px}.eyebrow{color:#7664d8;font-size:12px;letter-spacing:2.2px;font-weight:1000;text-transform:uppercase}.hero{display:grid;grid-template-columns:1.1fr .9fr;overflow:hidden;min-height:460px;border-radius:34px;background:linear-gradient(116deg,#211f57,#45367d 55%,#7462b1);color:white;box-shadow:var(--shadow);position:relative}.hero:before{content:'';position:absolute;width:530px;height:530px;background:radial-gradient(circle,#9f97ff66,transparent 68%);right:9%;top:-18%;pointer-events:none}.hero-copy{padding:60px 20px 50px 62px;position:relative;z-index:1}.hero-tag{display:inline-flex;padding:9px 13px;border:1px solid #ffffff45;color:#f9e6a2;border-radius:40px;font-size:12px;font-weight:1000;letter-spacing:1.5px;background:#ffffff15}.hero h1{font-size:clamp(44px,5.2vw,75px);letter-spacing:-3px;line-height:1.04;margin:22px 0 18px;font-weight:1000}.hero h1 em{color:#ffca68;font-style:normal}.hero p{max-width:510px;font-size:16px;line-height:1.85;color:#eae8ff}.hero-art{min-width:0;align-self:end;padding:20px 20px 0 0;position:relative;z-index:0}.hero-art svg{display:block;width:100%;height:auto;max-height:440px}.button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:16px;background:#fff;color:#3b3d81;font-weight:1000;font-size:15px;padding:17px 24px;box-shadow:0 12px 30px #222b6627}.button:hover{transform:translateY(-1px);filter:brightness(1.02)}.button.primary{background:#f6b940;color:#322f51}.button.purple{background:#665de6;color:#fff}.button.dark{background:#263355;color:#fff}.button.ghost{background:#edf0fc;box-shadow:none}.button:disabled{transform:none}.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.hero-footer{font-size:12px;color:#cfcbec}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:17px 0 24px}.stat{background:#fff;border-radius:19px;border:1px solid var(--line);padding:20px;text-align:center}.stat strong{display:block;font-size:26px;color:#4f48b4}.stat span{font-size:12px;color:var(--muted);font-weight:800}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap;margin:35px 0 18px}.section-head h2{font-size:29px;letter-spacing:-.8px;margin:5px 0}.room-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.room-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:23px;padding:0 0 18px;overflow:hidden;box-shadow:0 9px 21px #383d7110;transition:transform .18s,box-shadow .18s;width:100%}.room-card:hover{transform:translateY(-3px);box-shadow:0 16px 26px #4b568e21}.room-cover{height:126px;display:flex;align-items:center;justify-content:center;position:relative;background:linear-gradient(135deg,var(--light),#ffffff);overflow:hidden}.room-cover:before,.room-cover:after{content:'';position:absolute;background:#ffffff90;transform:rotate(35deg);width:120px;height:290px;top:-90px;left:-48px;border-radius:30px}.room-cover:after{left:auto;right:-70px;top:0;transform:rotate(-30deg)}.room-cover .big-icon{font-size:65px;z-index:1;filter:drop-shadow(0 10px 7px #4a4a8b22)}.room-card-content{padding:17px 17px 0}.room-name{font-weight:1000;font-size:19px;color:#253251}.room-tag{font-size:12px;color:#75809a;margin:5px 0 10px}.room-status{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#697391;font-weight:900;gap:8px}.progress-rail{height:7px;background:#edf0f7;border-radius:20px;overflow:hidden;flex:1}.progress-fill{height:100%;border-radius:20px;background:#5c56d8}.reveal{border:1px solid #e6e4f7;border-radius:24px;padding:22px;background:#fff;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}.reveal h3{margin:0 0 7px}.reveal p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}.footer{text-align:center;padding:34px 0 5px;color:#8390a9;font-size:12px}.level-top{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:14px;flex-wrap:wrap}.back-btn{border:0;border-radius:14px;background:white;padding:12px 16px;font-weight:900;color:#48526d;box-shadow:0 5px 22px #37437812}.level-heading h2{font-size:32px;letter-spacing:-1.5px;margin:3px 0}.level-heading p{margin:0;font-size:13px;color:#78819a}.level-progress{min-width:140px;text-align:right;font-weight:1000;font-size:15px}.level-progress .progress-rail{width:140px;margin-top:9px}.game-columns{display:grid;grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);gap:17px;align-items:start}.scene-panel,.challenge-panel,.notebook,.vault,.complete-box{background:#fff;border-radius:26px;border:1px solid var(--line);box-shadow:0 10px 39px #343e7a12;overflow:hidden}.panel-title{display:flex;align-items:center;justify-content:space-between;padding:17px 21px;border-bottom:1px solid #e8ecf6;font-weight:1000}.scene-art{position:relative;background:linear-gradient(135deg,#e6ebff,#f8faff);aspect-ratio:16/11;overflow:hidden}.scene-art svg{width:100%;height:100%;display:block}.spot{position:absolute;border:2px solid white;background:#fff8;color:#332c69;font-size:20px;border-radius:50%;width:46px;height:46px;box-shadow:0 8px 22px #23274744;animation:pulse 2.4s infinite}.spot:hover{transform:scale(1.08);background:#fff}.spot.found{animation:none;background:#e0f9e9;color:#169e78}.spot-label{font-weight:800;color:#54627e;font-size:13px;padding:16px 19px;line-height:1.75}.spot-label b{color:#3c35b2}.notebook{padding:16px 19px;margin-top:13px}.notebook h3{margin:0 0 10px;font-size:15px}.note-item{background:#f7f8fd;border:1px solid #ebedf4;border-radius:11px;padding:10px 12px;font-size:13px;margin:7px 0;line-height:1.5}.challenge-main{padding:22px}.q-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:11px}.q-kind{background:#f1eefd;color:#6b55d6;font-size:10px;font-weight:1000;letter-spacing:.8px;padding:8px 11px;border-radius:30px;text-transform:uppercase}.q-num{font-size:13px;color:#77829c;font-weight:800}.q-prompt{font-size:clamp(19px,2.4vw,25px);font-weight:1000;line-height:1.35;margin:12px 0 16px;letter-spacing:-.4px;min-height:60px}.option-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.answer-opt{background:#f7f8fd;border:2px solid #e9ecf6;border-radius:15px;padding:16px 14px;text-align:left;font-weight:900;color:#394660;min-height:65px;line-height:1.35}.answer-opt:hover:not(:disabled){background:#f1efff;border-color:#c3bdf7}.answer-opt.picked{background:#e6e2ff;border-color:#6f62ec}.answer-opt.correct{background:#e0faf0;border-color:#36bd8e}.answer-opt.wrong{background:#fff0ef;border-color:#f07171}.text-answer{display:flex;gap:8px;flex-wrap:wrap}.text-answer input{flex:1;min-width:180px;border:2px solid #dfe4f2;border-radius:15px;padding:15px;font-weight:850;font-size:17px;color:#293755;outline:0}.text-answer input:focus{border-color:#6b65d8}.chips{display:flex;flex-wrap:wrap;gap:7px;min-height:56px;margin:11px 0}.chip{border:2px solid #dedff0;border-radius:12px;background:#f8f8ff;padding:11px 14px;font-weight:900;color:#404b75}.chip:hover{background:#e7e4ff}.assembly{background:#f7f7fd;min-height:55px;border:2px dashed #c9cbe9;border-radius:13px;padding:7px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.assembly .chip{border-color:#bbb0ed;background:#eae6ff}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.match-column{display:grid;gap:9px;align-content:start}.match-opt{min-height:51px;background:#f6f7fc;border:2px solid #e6e9f5;border-radius:13px;padding:11px 9px;font-weight:850;font-size:13px;color:#3c496a}.match-opt.selected{border-color:#6b5ce5;background:#e9e7ff}.match-opt.matched{background:#e0faec;border-color:#49b987}.feedback{margin-top:17px;padding:14px;border-radius:14px;font-size:14px;line-height:1.65;font-weight:750}.feedback.ok{color:#176956;background:#e6f8f0;border:1px solid #c7edda}.feedback.no{background:#fff0ed;color:#9b4239;border:1px solid #f8d2ca}.q-actions{display:flex;align-items:center;justify-content:space-between;gap:9px;flex-wrap:wrap;margin-top:18px}.q-actions .button{padding:14px 17px}.hint{font-size:12px;color:#7c89a2;line-height:1.7}.study-tip{background:#faf8ff;border-left:4px solid #ac9ef0;padding:12px 14px;border-radius:0 13px 13px 0;color:#566084;font-size:13px;line-height:1.65;margin:16px 0}.mini-map{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:15px;border-top:1px solid #e6ebf4}.mini-map span{background:#f1f3fa;padding:8px 4px;border-radius:8px;text-align:center;font-size:11px;color:#8590aa;font-weight:1000}.mini-map .ok{background:#e1f6eb;color:#258364}.mini-map .now{background:#e9e5ff;color:#5c4ac5}.clue-toast{background:#f9f1ff;border:2px solid #bd9bec;border-radius:15px;padding:15px;margin-top:14px}.clue-toast b{color:#6044bb}.badge-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0}.badge-card{padding:15px;text-align:center;border:1px solid #e1e7f5;border-radius:17px;background:#fff}.badge-card strong{display:block;font-size:17px;margin:8px 0 3px}.badge-card span{color:#8a92a7;font-size:12px}.badge-card.locked{filter:grayscale(1);opacity:.65}.vault{padding:29px}.vault h2,.complete-box h2{margin:8px 0 10px;font-size:34px;letter-spacing:-1.2px}.vault p,.complete-box p{color:#687693;line-height:1.8}.vault-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}.vault-art{border-radius:18px;padding:20px;background:linear-gradient(145deg,#191d4c,#484084);color:white;min-height:240px;display:grid;place-items:center;text-align:center}.vault-art .giant{font-size:90px;filter:drop-shadow(0 12px 22px #02042b66)}.vault-slot{border:2px dashed #cbc9ee;border-radius:13px;padding:12px;background:#faf9ff;min-height:58px;font-size:13px;font-weight:850;margin:7px 0;display:flex;justify-content:space-between;align-items:center;gap:10px}.vault-slot.active{border-color:#7569df}.evidence-chip{border:2px solid #c2bcf8;border-radius:14px;background:#f2efff;color:#4e48a6;padding:12px 19px;font-size:14px;font-weight:1000}.evidence-chip:hover{border-color:#695add}.complete-box{text-align:center;padding:55px 25px;background:radial-gradient(circle at 50% 0%,#fff1cf,transparent 64%),#fff}.complete-box .trophy{font-size:88px;animation:float 3s ease-in-out infinite}.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden}.confetti i{position:absolute;top:-30px;width:9px;height:20px;border-radius:4px;animation:fall 4s ease-out forwards}.toolbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}.teacher-box{margin:19px 0;background:#fff;border:1px solid #e0e5f0;padding:18px;border-radius:18px}.teacher-box summary{font-weight:1000;cursor:pointer}.teacher-box p{line-height:1.7;color:#66728c;font-size:13px}.teacher-box button{font-size:12px}.modal-backdrop{position:fixed;inset:0;background:#0c1738a8;z-index:99;display:grid;place-items:center;padding:15px}.modal{max-width:480px;width:100%;background:white;border-radius:25px;padding:26px;box-shadow:0 30px 90px #11183f6e}.modal h3{font-size:24px;margin:0 0 9px}.modal p{line-height:1.7;color:#5c6983}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}.keyboard-hint{font-size:12px;color:#8a92aa;margin-top:11px}.divider{height:1px;background:#e8eaf3;margin:21px 0}#app{min-height:calc(100vh - 125px)}.hidden{display:none!important}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 #7767ec6b}65%{box-shadow:0 0 0 13px #7767ec00}}@keyframes float{50%{transform:translateY(-9px)}}@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}
@media(max-width:1050px){.room-grid{grid-template-columns:repeat(2,1fr)}.hero-copy{padding:46px 12px 40px 38px}.hero h1{font-size:55px}.game-columns{grid-template-columns:1fr}.scene-panel{max-width:700px;width:100%;margin:auto}.badge-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.app{padding:12px 12px 28px}.header{align-items:flex-start}.logo-icon{width:41px;height:41px;font-size:21px;border-radius:12px}.brand{font-size:15px}.brand small{font-size:8px}.header-actions{gap:5px}.header-actions .pill{padding:9px 10px;font-size:11px}.header-actions .pill .hide-mobile{display:none}.hero{grid-template-columns:1fr;min-height:0;border-radius:24px}.hero-copy{padding:32px 23px 0}.hero h1{font-size:clamp(40px,10vw,55px);letter-spacing:-2px;margin:17px 0 9px}.hero p{font-size:14px;line-height:1.75}.hero-art{height:200px;padding:0 12px;overflow:hidden}.hero-art svg{max-height:300px;width:100%;margin-top:-100px}.hero-cta{margin:16px 0}.button{padding:13px 15px;font-size:13px}.stats{gap:7px}.stat{border-radius:12px;padding:12px 3px}.stat strong{font-size:20px}.stat span{font-size:10px}.section-head h2{font-size:25px}.room-grid{gap:9px}.room-cover{height:95px}.room-cover .big-icon{font-size:48px}.room-name{font-size:14px}.room-card-content{padding:10px 11px 0}.room-tag{font-size:10px}.room-status{font-size:10px}.reveal{grid-template-columns:1fr}.level-heading h2{font-size:26px}.game-columns{gap:10px}.panel-title{padding:13px;font-size:13px}.challenge-main{padding:15px 13px}.q-prompt{font-size:20px;min-height:0}.option-grid{grid-template-columns:1fr;gap:7px}.answer-opt{min-height:49px;padding:11px 12px}.scene-art{aspect-ratio:16/10}.spot{width:36px;height:36px;font-size:17px}.spot-label{padding:12px;font-size:12px}.match-grid{gap:7px}.match-opt{padding:8px 4px;font-size:12px}.badge-cards{gap:6px}.badge-card{padding:9px}.vault{padding:18px 13px}.vault-grid{grid-template-columns:1fr}.vault-art{min-height:145px}.vault-art .giant{font-size:57px}.vault h2,.complete-box h2{font-size:27px}.notebook{padding:12px}.mini-map{padding:9px}.level-top{gap:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition:none!important;scroll-behavior:auto!important}}

/* Mission 02 accessible clue controls */
.help-note{margin:14px 0 0;padding:12px 15px;border:1px solid #f4dda7;background:#fff9e9;border-radius:13px;color:#694e1a;font-size:14px;line-height:1.65}.help-trigger{border-color:#ecdca1;background:#fff9e7;color:#6c5815}.answer-opt.hint-eliminated{opacity:.35;filter:grayscale(.8)}@media(max-width:620px){.help-note{font-size:13px;padding:11px 12px}.q-actions{gap:7px}.help-trigger{min-height:42px}}

/* Grade 5 optional vocabulary box */
.word-box{margin-top:12px;background:#fcfdff;border:1px solid #d9e2f5;border-radius:16px;padding:13px 17px;color:#33436b;font-size:14px}.word-box summary{font-weight:800;cursor:pointer}.word-box ul{margin:12px 0 4px;padding-left:18px;line-height:1.95}.word-box li strong{color:#544cbb}.word-box[open]{background:#fafaff}.q-prompt{overflow-wrap:break-word}