:root{--bg:#f6f0e4;--surface:#fffdf8;--surface2:#eef5f1;--ink:#17332f;--muted:#55706c;--line:#c7d8d2;--primary:#2f7a6b;--accent:#d9792f;--shadow:0 18px 45px #17332f20}*{box-sizing:border-box}html{font-family:"Noto Sans TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--bg);transition:background 1.5s,color 1.5s}html[data-theme=dawn]{--bg:#f6f0e4;--surface:#fffdf8;--surface2:#eef5f1;--ink:#17332f;--muted:#55706c;--line:#c7d8d2}html[data-theme=mist]{--bg:#dcebee;--surface:#f7fcfc;--surface2:#e6f2f4;--ink:#153641;--muted:#527078;--line:#b5d0d3}html[data-theme=night]{--bg:#16222e;--surface:#203441;--surface2:#263e4a;--ink:#edf7f4;--muted:#b6d0cd;--line:#42616a}body{margin:0;min-height:100vh;background:var(--bg);transition:background 1.5s;color:var(--ink)}button,input{font:inherit}button{cursor:pointer;border:0;color:inherit}.topbar{height:78px;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 86%,transparent);backdrop-filter:blur(16px);position:relative;z-index:4}.brand{display:flex;gap:12px;align-items:center}.brand-mark{font-size:2rem;background:var(--surface2);border-radius:16px;padding:7px 10px}.brand h1{font-size:1.1rem;margin:0 0 3px;font-weight:800}.brand p{font-size:.78rem;color:var(--muted);margin:0}.top-actions,.stage-toolbar,.bag-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.icon-btn,.stage-toolbar button,.bag-bar button{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-height:44px;box-shadow:0 2px 5px #17332f0b}.icon-btn:hover,.stage-toolbar button:hover,.bag-bar button:hover,.island-card:hover{border-color:var(--accent);transform:translateY(-1px)}.app-shell{display:grid;grid-template-columns:minmax(0,1fr) 360px;min-height:calc(100vh - 123px)}.stage-wrap{position:relative;min-height:650px;overflow:hidden;background:linear-gradient(#b9d9df,#eff2e7 65%,#c5ddd7)}.stage{position:absolute;inset:0}.stage canvas{display:block;width:100%;height:100%}.loading{position:absolute;inset:45% auto auto 50%;transform:translate(-50%,-50%);background:var(--surface);padding:16px 22px;border-radius:18px;box-shadow:var(--shadow);z-index:2}.labels{position:absolute;inset:0;pointer-events:none}.island-label{position:absolute;transform:translate(-50%,-100%);padding:7px 10px;border-radius:12px;background:#fffdf0e8;color:#17332f;border:2px solid var(--primary);font-weight:800;font-size:.8rem;white-space:nowrap;box-shadow:0 5px 14px #17332f33;pointer-events:auto;cursor:pointer}.island-label small{display:block;font-weight:500;color:#55706c}.scene-hint{position:absolute;left:20px;bottom:78px;color:#fff;background:#16342f99;border-radius:99px;padding:8px 13px;font-size:.78rem}.stage-toolbar{position:absolute;left:16px;right:16px;bottom:16px;z-index:3}.stage-toolbar button{background:#fffdf0dd}.clock{margin-left:auto;background:#16342fd9;color:#fff;padding:10px 12px;border-radius:12px;font-size:.85rem}.side-panel{padding:24px 18px;background:var(--surface);border-left:1px solid var(--line);overflow:auto}.panel-head{display:flex;justify-content:space-between;align-items:center}.eyebrow{font-size:.72rem;color:var(--accent);font-weight:800;letter-spacing:.08em}.panel-head h2{margin:5px 0 16px}.progress-ring{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--accent) 0deg,var(--surface2) 0);font-size:.8rem;font-weight:800}.search-row{display:flex;background:var(--surface2);border:1px solid var(--line);border-radius:12px;margin-bottom:14px}.search-row input{flex:1;border:0;background:transparent;padding:11px 12px;outline:0;color:var(--ink);min-width:0}.search-row button{background:transparent;padding:0 12px;font-size:1.4rem}.island-list{display:grid;gap:10px}.island-card{text-align:left;background:var(--surface2);border:1px solid var(--line);border-radius:14px;padding:13px;transition:.2s;min-height:76px}.island-card strong{display:block}.island-card span{font-size:.82rem;color:var(--muted);display:block;margin-top:4px;line-height:1.45}.island-card .stamp{float:right;background:var(--accent);color:#fff;border-radius:99px;padding:3px 7px;font-size:.7rem}.bag-bar{margin-top:16px}.bag-bar button{flex:1}.drawer,.modal{display:none;position:fixed;inset:0;z-index:10}.drawer.open,.modal.open{display:block}.drawer-backdrop,.modal-backdrop{position:absolute;inset:0;background:#09201c80;backdrop-filter:blur(3px)}.drawer-card,.modal-card{position:absolute;background:var(--surface);box-shadow:var(--shadow);overflow:auto}.drawer-card{right:0;top:0;bottom:0;width:min(560px,100%);padding:34px 28px}.modal-card{left:50%;top:50%;transform:translate(-50%,-50%);width:min(720px,calc(100% - 24px));max-height:min(86vh,780px);padding:32px;border-radius:22px}.close{position:absolute;right:13px;top:10px;width:44px;height:44px;border-radius:50%;background:var(--surface2);font-size:1.6rem}.content-title{margin:0 40px 5px 0;font-size:1.7rem}.content-sub{margin:0 0 18px;color:var(--muted)}.tabs{display:flex;gap:7px;border-bottom:1px solid var(--line);margin:14px 0}.tabs button{padding:10px 8px;background:none;border-bottom:3px solid transparent;min-height:44px}.tabs button.active{border-color:var(--accent);font-weight:800}.content-box{background:var(--surface2);border-radius:16px;padding:16px;margin:12px 0}.content-box h4{margin:0 0 8px}.content-box li{margin:6px 0}.primary{background:var(--primary);color:white;padding:12px 16px;border-radius:12px;min-height:44px}.accent{background:var(--accent);color:white;padding:12px 16px;border-radius:12px;min-height:44px}.quiz-option{display:block;width:100%;text-align:left;margin:8px 0;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);min-height:48px}.quiz-option.correct{background:#d8f0db;border-color:#39844c}.quiz-option.wrong{background:#ffe0d7;border-color:#b64e37}.quiz-option:disabled{cursor:default}.tag{display:inline-block;padding:4px 8px;background:var(--surface2);border-radius:99px;font-size:.75rem;margin:2px}.settings-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.theme-choice{padding:12px;border:2px solid var(--line);border-radius:12px;background:var(--surface);text-align:left}.theme-choice.active{border-color:var(--accent)}.theme-swatch{height:24px;border-radius:8px;margin-bottom:6px}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);opacity:0;z-index:30;background:#16342fee;color:#fff;padding:12px 16px;border-radius:12px;transition:.25s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}footer{min-height:45px;padding:13px 24px;color:var(--muted);font-size:.75rem;display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line)}body.reduce-motion *,body.reduce-motion *::before,body.reduce-motion *::after{animation:none!important;transition:none!important}@media(max-width:950px){.app-shell{grid-template-columns:1fr}.stage-wrap{min-height:calc(100vh - 290px);height:65vh}.side-panel{border:0;border-top:1px solid var(--line);padding:16px}.island-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.topbar{height:auto;padding:10px 12px;align-items:flex-start}.brand h1{font-size:.95rem}.brand p{font-size:.68rem}.top-actions{gap:4px}.icon-btn{font-size:.72rem;padding:7px 8px}.top-actions .icon-btn:nth-child(1){display:none}.stage-wrap{min-height:58vh;height:58vh}.scene-hint{left:10px;bottom:70px;font-size:.7rem}.stage-toolbar{left:8px;right:8px;bottom:8px;gap:5px}.stage-toolbar button{font-size:.7rem;padding:8px 9px}.clock{font-size:.72rem;padding:8px}.side-panel{padding:14px 12px}.island-list{grid-template-columns:1fr}.drawer-card,.modal-card{padding:28px 18px}.settings-grid{grid-template-columns:1fr}footer{display:block;padding:10px 12px}footer span{display:block;margin:3px 0}}