:root{--forest:#17352c;--forest-2:#31594a;--paper:#f4f1e8;--ink:#1b2b24;--muted:#66736c;--line:rgba(23,53,44,.18);--ginkgo:#d6b84f;--body:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;--display:"Songti SC","STSong",serif}
*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{color:var(--ink);background:#dde5e2;font-family:var(--body);-webkit-font-smoothing:antialiased}.garden-app{width:100%;height:100%;display:grid;grid-template-rows:68px minmax(0,1fr)}button,a,textarea,input{font:inherit}.task-bar{position:relative;z-index:10;display:flex;align-items:center;gap:22px;padding:0 max(18px,env(safe-area-inset-left));color:var(--paper);background:var(--forest);box-shadow:0 5px 20px #10251f2e}.back{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 13px;border:1px solid #ffffff3d;color:var(--paper);text-decoration:none;font-size:15px;font-weight:700}.back svg{width:18px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.7}.title{min-width:0;margin-right:auto}.title strong{display:block;font-family:var(--display);font-size:21px;font-weight:600;letter-spacing:.08em}.title small{display:block;margin-top:2px;color:#f2efe6a3;font-size:11px;letter-spacing:.12em}.view-actions{display:flex;gap:6px}.view-actions button{min-width:62px;min-height:42px;padding:0 13px;border:1px solid #ffffff38;border-radius:0;color:var(--paper);background:transparent;cursor:pointer}.view-actions button[aria-pressed="true"]{color:var(--forest);border-color:var(--ginkgo);background:var(--ginkgo)}button:focus-visible,a:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid var(--ginkgo);outline-offset:2px}.stage{position:relative;min-width:0;min-height:0;overflow:hidden;background:radial-gradient(circle at 52% 42%,#edf1ed 0,#dce5e1 52%,#cbd6d1 100%)}#viewport,#viewport canvas{display:block;width:100%;height:100%}#viewport canvas{touch-action:none}.scene-note{position:absolute;left:26px;bottom:24px;display:grid;gap:3px;padding:15px 18px;border-top:2px solid var(--forest-2);background:#f5f2eae8;box-shadow:0 8px 26px #17352c1f;pointer-events:none}.scene-note strong{font:600 21px var(--display)}.scene-note span{color:var(--muted);font-size:13px}.scene-note small{margin-top:5px;color:var(--forest-2);font-size:11px;font-weight:700}.npc{position:absolute;right:2.8vw;bottom:0;width:min(20vw,260px);height:78%;padding:0;border:0;background:transparent;cursor:pointer}.npc img{position:absolute;right:8%;bottom:53px;width:auto;height:calc(100% - 58px);max-width:100%;object-fit:contain;filter:drop-shadow(0 12px 10px #152b2240);transition:transform .18s ease}.npc>span{position:absolute;right:0;bottom:22px;min-width:160px;padding:9px 14px;color:var(--paper);background:var(--forest);box-shadow:0 7px 18px #17352c38}.npc b,.npc small{display:block}.npc b{font-size:16px}.npc small{margin-top:2px;color:#f2efe6b3;font-size:11px}.npc:not(:disabled):hover img{transform:translateY(-5px)}.npc:disabled{cursor:wait;opacity:.55}.loading{position:absolute;inset:0;z-index:8;display:grid;place-content:center;text-align:center;color:#31463b;background:#e2e8e5}.loading[hidden]{display:none}.loading-ring{width:42px;height:42px;margin:0 auto 15px;border:3px solid #31463b2e;border-top-color:var(--forest-2);border-radius:50%;animation:spin 1s linear infinite}.loading strong{font:600 22px var(--display);letter-spacing:.08em}.loading>span:last-child{margin-top:7px;color:#68776f;font-size:12px}@keyframes spin{to{transform:rotate(360deg)}}
dialog{font-family:var(--body)}.chat{width:min(740px,92vw);height:min(680px,88dvh);padding:0;border:0;border-radius:0;color:var(--ink);background:var(--paper);box-shadow:0 24px 80px #0e251d70}.chat::backdrop,.settings::backdrop{background:#10251f75;backdrop-filter:blur(4px)}.chat[open]{display:grid;grid-template-rows:auto minmax(0,1fr) auto auto}.chat header{display:flex;align-items:center;justify-content:space-between;padding:22px 26px 17px;border-bottom:1px solid var(--line)}.chat header small{color:var(--forest-2);font-size:11px;font-weight:800;letter-spacing:.14em}.chat h1{margin:3px 0 0;font:600 26px var(--display)}.close{width:44px;height:44px;border:0;color:var(--forest);background:transparent;font-size:30px;cursor:pointer}.messages{overflow:auto;padding:23px 26px}.bubble{width:fit-content;max-width:82%;margin:0 0 15px;padding:12px 15px;white-space:pre-wrap;line-height:1.65;background:#fff}.bubble.assistant{box-shadow:inset 0 2px 0 var(--forest-2)}.bubble.user{margin-left:auto;color:white;background:var(--forest-2)}.bubble.error{color:#803e32;background:#f4e3dc}.chat form{display:grid;grid-template-columns:minmax(0,1fr) 72px;gap:8px;padding:12px 18px;border-top:1px solid var(--line)}.chat textarea{width:100%;resize:none;padding:12px;border:1px solid var(--line);border-radius:0;background:#fff;font-size:16px;line-height:1.5}.send,.primary{border:0;color:white;background:var(--forest);font-weight:700;cursor:pointer}.send:disabled{cursor:wait;opacity:.55}.chat footer{display:flex;align-items:center;justify-content:space-between;padding:0 20px 14px;color:var(--muted);font-size:12px}.chat footer button{min-height:36px;border:0;color:var(--forest-2);background:transparent;cursor:pointer}.settings{width:min(440px,90vw);padding:26px;border:0;border-radius:0;color:var(--ink);background:var(--paper)}.settings h2{margin:0 0 12px;font:600 24px var(--display)}.settings p{color:var(--muted);line-height:1.6}.settings label{display:block;margin:18px 0 7px;font-weight:700}.settings input{width:100%;padding:12px;border:1px solid var(--line);background:white}.settings>div{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}.settings button{min-height:42px;padding:0 18px;border:1px solid var(--line);cursor:pointer}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:820px){.title small{display:none}.npc{right:1vw;width:24vw}.scene-note{left:16px;bottom:16px}.view-actions button{min-width:54px;padding:0 9px}}
@media(max-width:580px){.garden-app{grid-template-rows:108px minmax(0,1fr)}.task-bar{align-content:center;flex-wrap:wrap;gap:7px;padding-top:7px;padding-bottom:7px}.title{margin-right:0}.view-actions{flex-basis:100%;justify-content:flex-end}.npc{width:38vw;height:62%}.scene-note{right:16px;bottom:12px}.scene-note span{display:none}.chat{width:100vw;height:100dvh;max-width:none;max-height:none;margin:0}.bubble{max-width:94%}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* Simple backdrop; no extra environment textures. */
body,.stage,#viewport,.loading{background:#101214}.loading,.loading>span:last-child{color:#dce3df}

.chat[open]{grid-template-rows:auto auto minmax(0,1fr) auto auto}#demo-state[hidden]{display:none}#demo-state{padding:10px 24px;background:#eee5c8;color:#5a4923;font-size:13px;line-height:1.5}#class-demo{padding:9px 13px;min-height:40px;background:#fffdf5;border:1px solid #b4c3b6;border-radius:5px;color:#17352c;cursor:pointer}#offline-state{font-size:11px;color:#526c60}.chat footer{gap:12px;flex-wrap:wrap}#demo-toggle{border:1px solid #a6b7a9;border-radius:5px;padding:7px 12px} @media(max-width:580px){#offline-state{display:none}.task-bar{gap:5px}#class-demo{font-size:12px}.chat-send-actions button{flex:1}}
.chat>header{grid-row:1}#demo-state{grid-row:2}.chat>.messages{grid-row:3}.chat>form{grid-row:4}.chat>footer{grid-row:5}

/* Compact classroom dialogue controls, scoped to this page. */
#chat[open]{grid-template-rows:auto minmax(0,1fr) auto auto;position:relative}
#chat>.messages{grid-row:2}#chat>form{grid-row:3}#chat>footer{grid-row:4;justify-content:flex-end;padding:0 18px 10px}
#chat #chat-form{grid-template-columns:minmax(0,1fr) 104px;gap:8px 12px;padding-bottom:4px}
#chat textarea{grid-column:1;grid-row:1;min-height:96px}
#chat .chat-send-actions{grid-column:2;grid-row:1;flex-direction:column;gap:8px}
#chat .chat-send-actions button{min-width:0;min-height:44px;padding:8px 12px}
#chat .chat-voice-bar{grid-column:1;grid-row:2}
#chat #service-state{display:none}
#chat #demo-toggle{display:grid;place-items:center;width:28px;height:28px;min-height:28px;padding:0;border-radius:50%;border:1px solid #abb8ae;color:#52695b;background:transparent;font-size:16px}
#chat #demo-state{position:absolute;right:76px;top:34px;padding:0;background:transparent;color:#52695b;font-size:16px;z-index:2}
#demo-state summary{list-style:none;cursor:pointer;width:28px;height:28px;display:grid;place-items:center;border-radius:50%}
#demo-state summary::-webkit-details-marker{display:none}
#demo-state>div{position:absolute;right:0;top:32px;width:240px;padding:12px;background:#fffdf5;border:1px solid #abb8ae;box-shadow:0 4px 16px #17352c20;font-size:13px;line-height:1.6}