:root{--ink:#1e3940;--muted:#65818a;--glass:rgba(255,255,255,.84);--shadow:0 12px 38px rgba(26,63,76,.16)}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;font-family:system-ui,-apple-system,"Noto Sans TC","Microsoft JhengHei",sans-serif;color:var(--ink)}body{background:#ccecf0}button,a{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #ffad58;outline-offset:3px}#scene{position:fixed;inset:0;touch-action:none}canvas{display:block}button{border:0}.top{position:fixed;left:24px;right:24px;top:20px;z-index:12;display:flex;align-items:center;justify-content:space-between;pointer-events:none}.top>*{pointer-events:auto}.brand{display:flex;gap:10px;align-items:center;text-shadow:0 1px 8px #ffffffbb}.brand-icon{font-size:38px;color:#ed9364}.brand h1{font-size:24px;letter-spacing:.08em;margin:0;font-weight:850}.brand small{font-size:10px;letter-spacing:.18em;font-weight:800}.top-actions,.controls{display:flex;gap:7px}.glass{border:1px solid #ffffffcf;background:var(--glass);color:#24464c;box-shadow:0 5px 20px #386b7526;padding:10px 14px;border-radius:15px;font-size:13px;text-decoration:none;font-weight:700;backdrop-filter:blur(14px)}.glass:hover,.glass.active{background:#e0faf3}.bottom{position:fixed;bottom:34px;left:50%;transform:translateX(-50%);z-index:12;display:flex;gap:14px;align-items:center;background:#fffffff0;border:1px solid white;border-radius:22px;padding:10px 12px;box-shadow:var(--shadow);max-width:calc(100% - 28px);backdrop-filter:blur(14px)}.bottom-group{display:flex;gap:7px;align-items:center}.control-caption{font-size:11px;color:var(--muted);font-weight:800;white-space:nowrap}.times{display:flex;background:#eff4f4;padding:4px;border-radius:13px;gap:2px}.times button{border-radius:10px;background:transparent;padding:9px 11px;color:#64818a;font-size:12px;white-space:nowrap}.times button.active{background:#315f65;color:#fff}.bottom .glass{padding:10px 12px;background:#edf5f4;box-shadow:none}.tip{position:fixed;bottom:108px;left:50%;transform:translateX(-50%);z-index:2;background:#f9ffffff;color:#55727a;border-radius:999px;padding:8px 15px;font-size:11px;white-space:nowrap;pointer-events:none}footer{position:fixed;bottom:7px;left:15px;z-index:2;font-size:10px;color:#395e68b8}footer a{color:inherit}.panel{position:fixed;right:22px;top:92px;bottom:135px;width:340px;max-width:calc(100vw - 36px);overflow:auto;z-index:20;background:#fffffff5;border:1px solid white;border-radius:22px;box-shadow:var(--shadow);padding:24px;backdrop-filter:blur(20px)}.panel[hidden],.modal-backdrop[hidden],.cat-bubble[hidden],#loading[hidden]{display:none}.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.eyebrow{display:block;color:#629ba2;letter-spacing:.2em;font-size:11px;font-weight:800}.panel h2{margin:5px 0 8px;font-size:23px}.icon-btn{height:32px;width:32px;border-radius:50%;background:#edf4f4;color:#4d7178;font-weight:800}.hint{font-size:12px;color:var(--muted)}.location-item{display:flex;align-items:center;gap:12px;width:100%;background:#f5f9f8;border-radius:14px;margin:7px 0;padding:10px;text-align:left;color:var(--ink)}.location-item:hover{background:#e1f3ed}.location-item .emoji{font-size:22px;width:38px;text-align:center}.location-item b{display:block;font-size:13px}.location-item small{font-size:11px;color:var(--muted)}.detail{bottom:auto;max-height:calc(100vh - 180px)}.detail-icon{font-size:42px}.chip{display:inline-block;background:#e7f5ef;color:#347c74;border-radius:99px;padding:5px 10px;font-size:11px;font-weight:700}.detail p{font-size:14px;line-height:1.9;color:#546e75;margin:20px 0}#detail-links a{display:block;color:#fff;text-decoration:none;background:#2f7773;border-radius:13px;margin:8px 0;padding:12px 14px;font-size:13px;font-weight:700}#detail-links a:hover{background:#235a58}.label{position:absolute;transform:translate(-50%,-100%);color:#31545b;background:#ffffffec;border:1px solid #fff;border-radius:50px;padding:6px 11px;box-shadow:0 3px 14px #143e4f25;white-space:nowrap;font-size:12px;font-weight:800;cursor:pointer;pointer-events:auto}.label:hover{background:#dbf9ed}#labels{position:fixed;inset:0;pointer-events:none;z-index:4}.cat-bubble{position:fixed;z-index:25;left:50%;bottom:128px;transform:translateX(-50%);border-radius:15px;padding:13px 18px;background:#fff;box-shadow:var(--shadow);font-size:13px;max-width:min(350px,85vw);text-align:center}.modal-backdrop{position:fixed;inset:0;z-index:40;background:#153d4b66;display:grid;place-items:center;padding:15px;backdrop-filter:blur(7px)}.modal{position:relative;width:min(470px,100%);background:#fff;border-radius:26px;padding:32px;box-shadow:var(--shadow)}.modal-emoji{display:block;font-size:45px;margin-bottom:12px}.modal h2{font-size:24px;margin:8px 0}.modal p,.modal li{color:#607981;font-size:14px;line-height:1.8}.modal ol{padding-left:23px}.modal-close{position:absolute;right:17px;top:17px}.primary{background:#28776d;color:#fff;padding:13px 22px;border-radius:13px;font-weight:800;width:100%;margin-top:12px}#loading{position:fixed;z-index:99;inset:0;display:flex;justify-content:center;align-items:center;flex-direction:column;background:#dff2ef;text-align:center}#loading h2{margin:10px}.loader-icon{font-size:66px;animation:float 1.7s infinite ease-in-out}@keyframes float{50%{transform:translateY(-8px)}}#load-error{color:#b44343;font-size:13px;margin-top:10px}@media(max-width:760px){.top{top:12px;left:13px;right:13px}.brand-icon{font-size:26px}.brand h1{font-size:17px}.brand small{font-size:7px}.glass{padding:9px}.top-actions .glass span{display:none}.bottom{bottom:38px;flex-direction:column;gap:8px;border-radius:18px}.tip{bottom:152px;font-size:10px;padding:7px 9px}.panel{top:77px;right:10px;width:min(350px,calc(100vw - 20px));bottom:160px}.detail{bottom:auto}.control-caption{display:none}.bottom .glass{padding:8px 10px}.times button{padding:8px 10px}footer{font-size:8px;bottom:5px;right:8px;text-align:center}}

/* V2.0: cat passport and conversations */
.passport-panel,.cat-dialog{bottom:auto;max-height:calc(100vh - 180px)}
.top-actions .count{font-size:10px;border-radius:20px;padding:2px 6px;background:#2f7773;color:white}
.passport-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:15px 0}.passport-stats>div{padding:12px;background:#eff7f3;border-radius:12px}.passport-stats small{display:block;font-size:11px;color:#66818a}.passport-stats strong{font-size:16px;display:block;margin-top:4px}.progress-track{height:9px;background:#e9eeed;border-radius:20px;overflow:hidden}.progress-track>div{height:100%;background:#37a07b;width:0;transition:width .25s}.stamp-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-top:15px}.stamp{display:flex;min-height:67px;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:#f2f5f5;border:1px dashed #bdcdcc;border-radius:12px;color:#8b9a9e;font-size:10px;padding:5px 2px}.stamp.collected{background:#eaf8eb;border:1px solid #91c9aa;color:#28765b;font-weight:800}.stamp-symbol{font-size:21px}.passport-award,.clue-box{border-radius:12px;background:#fff4dd;padding:12px;font-size:13px;line-height:1.8}.passport-note{font-size:11px;color:#71858b;line-height:1.6}.reset-btn{font-size:11px;color:#777;background:transparent;text-decoration:underline}.cat-stamp-message{border-radius:12px;background:#e7f7ed;color:#287359;padding:10px;font-size:12px;font-weight:800}.cat-dialog #cat-speech{font-size:15px;line-height:1.9;margin:18px 0}.cat-actions{display:flex;gap:8px}.cat-actions button{flex:1;padding:10px 7px}.cat-dialog #cat-go,.passport-panel #passport-go{margin:10px 0 3px}.passport-panel #passport-go[hidden],.cat-dialog #cat-go[hidden],.cat-dialog #cat-clue-text[hidden]{display:none}@media(max-width:760px){.passport-panel,.cat-dialog{max-height:calc(100vh - 235px)}.top-actions{gap:4px}.top-actions .glass{padding:8px 7px;font-size:12px}}
/* V2.1: landmark games, 19-item passport and optional audio */
.challenge-panel{width:400px;max-height:calc(100vh - 180px);bottom:auto}
.challenge-panel h3{font-size:16px;line-height:1.55;margin:12px 0}
.mission-copy{font-size:13px;line-height:1.75;color:#506d72}
.mission-step{background:#e9f6ef;color:#26705d;padding:8px 11px;border-radius:10px;font-size:12px;font-weight:800}
.mission-option,.mission-secondary{width:100%;text-align:left;margin:6px 0;padding:12px 13px;border:1px solid #d8e7e2;border-radius:12px;background:#f4faf8;color:#27515a;font-size:13px;font-weight:700;line-height:1.5}
.mission-option:hover,.mission-secondary:hover{background:#dff3e9}.mission-option:disabled{opacity:.6;cursor:default}
.mission-secondary{background:#fff9e9;border-color:#eadcbb}.mission-feedback{min-height:22px;font-size:12px;line-height:1.6;color:#627c80}.mission-feedback.right{color:#258456}.mission-feedback.wrong{color:#b5692d}
.mission-card-desc,.mission-choice-detail{background:#eff7f5;border-radius:12px;padding:12px;font-size:13px;line-height:1.8}
.mission-note{color:#6b7e83;font-size:11px;line-height:1.7;border-top:1px solid #dce9e7;padding-top:10px}
.mission-success{background:#e3f6e9;color:#267257;border-radius:14px;padding:16px;font-weight:800;margin-top:16px}
.passport-subtitle{font-size:14px;margin:20px 0 6px}.place-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.place-stamp{padding:12px 8px;background:#f4f7f8;border:1px dashed #cbd7d7;color:#67838a;border-radius:12px;font-size:11px;text-align:left}.place-stamp.collected{border:1px solid #9bceb0;color:#277454;background:#e8f6ec;font-weight:800}
#detail-mission .primary{margin-top:14px}
@media(max-width:760px){.challenge-panel{top:77px;max-height:calc(100vh - 220px)}.top-actions .glass{font-size:11px}.bottom{width:min(480px,calc(100% - 12px))}.bottom-group.controls{flex-wrap:wrap;justify-content:center}.bottom #toggle-music,.bottom #toggle-effects{font-size:11px;padding:7px 8px}.tip{bottom:164px}}

/* V2.2 limited cards / certificate */
.rewards-panel{width:430px;max-height:calc(100vh - 180px);bottom:auto}.reward-status{font-size:12px;color:#477369;font-weight:700}.reward-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:13px 0}.reward-tile{display:flex;align-items:center;text-align:left;gap:9px;padding:10px 8px;border-radius:13px;border:1px solid #d6e4e0;background:#f4f9f6;color:#355d57;min-height:74px}.reward-tile.selected{background:#e5f5df;border-color:#75b598;box-shadow:inset 0 0 0 1px #75b598}.reward-tile-icon{font-size:24px}.reward-tile strong{display:block;font-size:12px}.reward-tile small{display:block;margin-top:5px;font-size:10px;color:#66857e}.reward-preview{width:100%;min-height:210px;background:#eaf5ef;border-radius:14px;overflow:hidden;display:grid;place-items:center;padding:12px}.reward-preview img{width:100%;max-height:340px;object-fit:contain;border-radius:9px;box-shadow:0 6px 20px #294b3b25}.reward-locked{white-space:pre-line;line-height:2;text-align:center;color:#68857e;font-size:13px;font-weight:650}.reward-name{display:block;font-size:13px;font-weight:700;margin-top:13px}.reward-name input{display:block;width:100%;margin:6px 0 10px;padding:12px;border-radius:10px;border:1px solid #c8d8d1;font:inherit}.reward-name[hidden]{display:none}.rewards-panel .primary:disabled{background:#a7bbb1;cursor:not-allowed}.reward-toast{position:fixed;z-index:35;top:80px;left:50%;transform:translateX(-50%);max-width:90vw;padding:12px 17px;border-radius:18px;background:#fff5dc;color:#6a5530;border:1px solid #e9d19c;box-shadow:0 12px 35px #1f41363d;font-size:13px;font-weight:800}.reward-toast[hidden]{display:none}@media(max-width:760px){.rewards-panel{top:77px;max-height:calc(100vh - 225px)}.reward-toast{top:75px;width:80vw}.top-actions{flex-wrap:wrap;justify-content:flex-end}}

.reward-error{color:#a3473e;font-size:13px;line-height:1.8;padding:16px;text-align:center}