*{box-sizing:border-box}body{margin:0;background:#e7f5f1;color:#283e4b;font-family:"Microsoft YaHei","Segoe UI",sans-serif;min-height:100vh;display:grid;place-content:center}button,input,select{font:inherit}button{cursor:pointer;border:0;border-radius:13px;padding:11px 18px;background:#fff8ee;color:#294251;font-weight:700;box-shadow:0 3px 0 #d6dacf}button:hover{filter:brightness(1.035);transform:translateY(-1px)}button:disabled{opacity:.48;cursor:not-allowed;transform:none}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #bb72ba;outline-offset:3px}#stage{width:min(100vw,calc(100vh * 16 / 9),1440px);aspect-ratio:16/9;position:relative;overflow:hidden;border-radius:22px;box-shadow:0 20px 80px #5a929533;background:#d1f1fa}#canvas{display:block;width:100%;height:100%;outline:none}#shell{position:absolute;inset:0;pointer-events:none}header{display:flex;justify-content:space-between;align-items:center;padding:1.6% 2.3%;gap:10px}.brand{display:flex;align-items:center;gap:10px;color:#344854;text-decoration:none;font-weight:800;font-size:clamp(14px,1.55vw,22px);text-shadow:0 1px #fff}.brand small{display:block;font-size:11px;letter-spacing:2px;font-weight:500;margin-top:3px}.brand-mark{display:grid;place-items:center;border-radius:18px;width:48px;height:48px;background:#fff9ed;color:#f38aac;font-size:36px;box-shadow:0 4px #e9d5bd}.tools{display:flex;align-items:center;gap:9px;pointer-events:auto}.tools label{font-size:12px;background:#fff9edef;padding:10px;border-radius:12px}.tools select{border:0;background:none;color:#37525b}.tools button{padding:9px 13px;font-size:20px}#account-tools{pointer-events:auto;position:absolute;top:13%;right:2.3%;display:flex;gap:9px}#account-tools[hidden]{display:none}.modal{position:absolute;inset:0;z-index:20;background:#e5f3f4bb;backdrop-filter:blur(8px);display:grid;place-items:center;overflow:auto;padding:20px}.modal[hidden]{display:none}.card{background:#fffaf0;border:2px solid #fff;border-radius:24px;box-shadow:0 18px 60px #2b4a6226;padding:28px;width:min(470px,95%);max-height:100%;overflow:auto}.card h1{font-size:26px;margin:8px 0 12px}.card p{line-height:1.65;color:#63757b;font-size:14px}.card label{display:block;margin:13px 0;color:#3f5963;font-size:14px}.card input{display:block;width:100%;padding:12px;margin-top:7px;background:white;border:1px solid #dce4df;border-radius:10px}.primary{background:#75dbbe;color:#174b41;box-shadow:0 4px #4bb799}.secondary{background:#eff3f0;box-shadow:0 3px #d4ded7}.card form>button{width:100%;margin-top:10px}.error{color:#ba5062!important;min-height:18px}.actions{display:flex;gap:12px;margin-top:18px}.shop-card{width:min(860px,96%)}.items{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.items article{border:1px solid #e6e2d5;border-radius:15px;padding:12px;background:#ffffff85}.items h3{font-size:15px;margin:0}.items button{font-size:12px;padding:8px 10px;margin:5px 4px 0 0}.avatar-preview{height:140px;display:flex;justify-content:center;align-items:center;background:#e3f4e9;border-radius:16px;margin-bottom:16px}.avatar-preview canvas{width:125px;height:140px}#status{position:absolute;bottom:1%;right:2%;background:#fffaf0e8;border-radius:9px;padding:7px 10px;font-size:12px;pointer-events:none;z-index:25}#status:empty{display:none}#chat-input{position:absolute;z-index:14;left:27%;right:27%;top:72%;height:6.7%;display:flex;gap:8px}#chat-input[hidden]{display:none}#chat-input input{width:100%;min-width:0;border:1px solid #b9d9d0;border-radius:10px;padding:8px 12px;background:transparent;color:transparent;caret-color:#245b57}#chat-input button{background:#6dd8b6;white-space:nowrap;padding:6px 12px}#performance{position:absolute;left:1%;bottom:1%;background:#193c45df;color:#b7ffcf;font:12px monospace;padding:10px;z-index:30;pointer-events:none}.device-note{text-align:center;font-size:12px;color:#758b88;margin:14px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}@media(max-width:700px){.brand small,.device-note{display:none}.brand-mark{width:30px;height:30px;font-size:26px}.tools{gap:4px}.tools label{padding:7px}.tools button,#account-tools button{padding:7px;font-size:12px}.card{padding:18px}.items{grid-template-columns:repeat(2,1fr)}}

#accessible-controls{position:absolute;inset:0;width:auto;height:auto;overflow:visible;clip-path:none;pointer-events:none}#accessible-controls button{position:absolute;background:transparent;color:transparent;box-shadow:none;border:0;padding:0;pointer-events:auto;font-size:0;transform:none}#accessible-controls button:focus-visible{outline:3px solid #9564bc;outline-offset:3px}#stage:fullscreen{width:100vw;height:100vh;max-width:none;border-radius:0;aspect-ratio:auto}#stage:fullscreen canvas{object-fit:contain}

#stage{width:min(calc(100vw - 24px),calc((100dvh - 24px) * 16 / 9),1440px)}
.tools #logout{font-size:13px;padding:11px 14px}.tools [hidden]{display:none!important}.recording-pill{background:#fffaf0e8;border-radius:20px;padding:8px 11px;font-size:12px;color:#7b8781;white-space:nowrap}.recording-pill[data-recording="true"]{color:#b46673}
.student-start.study-overlay{background:#e4f2efcf;backdrop-filter:blur(8px);color:#34515b}.student-start .study-card{width:min(460px,calc(100vw - 40px));text-align:center;padding:32px;border:2px solid #fff;border-radius:28px;background:#fffaf0;box-shadow:0 24px 70px #355d6a26}.student-start .start-star{display:grid;place-items:center;margin:0 auto 20px;width:78px;height:78px;border-radius:25px;background:#fff0c6;color:#ebbd58;font-size:54px}.student-start .study-card h1{font-size:26px;margin:0 0 16px}.student-start .study-card p{font-size:14px;color:#738680;line-height:1.8}.student-start .study-actions{margin-top:24px}.student-start .study-actions button{background:#75dbbe;color:#174b41;box-shadow:0 4px #4bb799}.card>.secondary{font-size:12px;margin-top:16px}.actions{flex-wrap:wrap}.actions button{flex:1;white-space:nowrap}

#chat-input{left:26.71875%;right:26.640625%;top:71.94444%;height:6.527778%;gap:8px}#chat-input button{width:75px;flex-shrink:0;background:transparent;box-shadow:none;color:transparent;border-radius:14px}#chat-input input{border-color:transparent}

#chat-input{gap:1.34%}#chat-input button{width:12.56%;padding:0}#chat-input input{font-size:calc(16px * var(--game-scale,1));font-weight:500;padding:calc(8px * var(--game-scale,1)) calc(12px * var(--game-scale,1))}
.student-start .study-card{position:relative}.student-start .start-back{position:absolute;right:12px;top:10px;padding:2px 10px;background:transparent;box-shadow:none;font-size:26px;font-weight:400;color:#8c9c95}