:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#243332;background:#e9edec;font-synthesis:none}*{box-sizing:border-box}body{margin:0}main{height:100svh;min-height:480px;position:relative;overflow:hidden}#scene{position:absolute;inset:0}canvas{display:block;touch-action:none}header{position:absolute;left:34px;right:34px;top:30px;display:flex;justify-content:space-between;align-items:center;pointer-events:none}.identity{display:flex;align-items:center;gap:17px}.floor{font-size:2.55rem;font-weight:550;letter-spacing:-.08em;padding-right:18px;border-right:1px solid #7b8c8a55}.eyebrow{font-size:.875rem;letter-spacing:.22em;color:#5e716c}h1{font-weight:550;font-size:1.5rem;letter-spacing:.12em;margin:3px 0 0}.version{font-size:.875rem;color:#4b625d;background:#ffffffb8;border:1px solid #ffffffa6;border-radius:25px;padding:10px 15px;backdrop-filter:blur(12px)}.version span{color:#7b817c}.panel{position:absolute;top:124px;right:34px;width:246px;background:#fffffff0;box-shadow:0 10px 35px #1e38380b;border:1px solid #ffffffc0;border-radius:14px;padding:19px 20px;backdrop-filter:blur(16px)}.panel-title{font-size:.875rem;font-weight:600;letter-spacing:.04em;margin-bottom:18px}.toggle{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.875rem;cursor:pointer;margin:16px 0;color:#4a5a56}.toggle input{position:absolute;opacity:0;width:1px;height:1px}.switch{width:31px;height:19px;background:#c5cecb;border-radius:12px;position:relative;flex-shrink:0;transition:background .15s}.switch:after{content:"";position:absolute;width:13px;height:13px;top:3px;left:3px;border-radius:50%;background:#fff;transition:transform .15s}.toggle input:checked+.switch{background:#3d6657}.toggle input:checked+.switch:after{transform:translateX(12px)}.toggle input:focus-visible+.switch{outline:3px solid #6f9fda;outline-offset:3px}details{margin-top:20px;border-top:1px solid #e0e7e3;padding-top:17px}summary{font-size:.875rem;cursor:pointer;display:flex;justify-content:space-between;list-style:none}summary::-webkit-details-marker{display:none}details p{font-size:.875rem;line-height:1.75;color:#68766e;margin:12px 0 0}.toolbar{display:flex;position:absolute;bottom:58px;left:50%;transform:translateX(-50%);gap:6px;padding:6px;background:#ffffffed;border:1px solid #fff;border-radius:13px;box-shadow:0 8px 35px #2e454518;backdrop-filter:blur(14px)}button{font:inherit}.toolbar button{border:0;background:transparent;white-space:nowrap;color:#536660;cursor:pointer;border-radius:8px;padding:14px 18px;font-size:.9375rem;transition:background .16s,color .16s}.toolbar button span{font-size:.75rem;margin-right:8px;opacity:.58}.toolbar button:hover{background:#edf2ef}.toolbar button.active{background:#294c40;color:#fff}.toolbar button:focus-visible{outline:3px solid #6f9fda;outline-offset:2px}footer{position:absolute;bottom:21px;left:34px;right:34px;display:flex;justify-content:space-between;font-size:.8125rem;letter-spacing:.01em;color:#6c7f78;pointer-events:none}#loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;background:#e9edec;z-index:10;color:#42594f}#loading[hidden]{display:none}#loading p{font-size:1rem;max-width:460px;text-align:center;line-height:1.7;margin:18px 24px}.spinner{width:30px;height:30px;border:2px solid #cad7d0;border-top-color:#426f5a;border-radius:50%;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:700px){header{left:20px;right:20px;top:20px}.floor{font-size:2rem;padding-right:13px}.identity{gap:12px}h1{font-size:1.2rem}.eyebrow{font-size:.8rem}.version{font-size:.75rem;padding:8px 11px}.version span{display:none}.panel{top:105px;right:18px;width:205px;padding:14px 16px}.panel-title{margin-bottom:12px}.toggle{font-size:.875rem;margin:12px 0}.toolbar{bottom:60px;max-width:calc(100% - 28px);gap:2px;padding:5px}.toolbar button{font-size:.875rem;padding:13px 10px}.toolbar button span{display:none}footer{left:20px;right:20px;bottom:23px;font-size:.75rem}footer span:last-child{display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important}.spinner{animation:none}}

.mode-switch{display:flex;gap:4px;background:#edf2ef;border-radius:9px;padding:4px;margin-bottom:18px}.mode-switch button{flex:1;border:0;border-radius:6px;padding:8px;cursor:pointer;color:#5a6e65;background:transparent;font-size:.875rem}.mode-switch button.active{background:#fff;color:#294c40;box-shadow:0 2px 6px #20392b12}.mode-switch button:focus-visible,select:focus-visible{outline:3px solid #6f9fda;outline-offset:2px}#room-picker label{display:block;font-size:.8rem;color:#63766c;margin-bottom:8px}select{font:inherit;font-size:.8rem;width:100%;padding:9px 6px;border:1px solid #dbe4de;border-radius:6px;background:#fff;color:#344f42}#space-info{padding-top:14px;font-size:.85rem}#space-info p{font-size:.8rem;line-height:1.65;color:#65786d;margin:8px 0}.panel{max-height:calc(100svh - 255px);overflow-y:auto}[hidden]{display:none!important}@media(max-width:700px){.panel{width:190px;max-height:calc(100svh - 250px)}.mode-switch{margin-bottom:12px}.version{max-width:132px;text-align:center;line-height:1.5}h1{letter-spacing:.03em}.toolbar{overflow-x:auto;justify-content:flex-start;width:max-content}.toolbar button{padding:12px 9px;font-size:.8rem}.toolbar button span{display:none}}

#enter-walk{display:flex;justify-content:space-between;align-items:center;width:100%;border:0;border-radius:8px;background:#294c40;color:white;padding:12px;margin:0 0 18px;cursor:pointer;font-size:.875rem}#enter-walk:hover{background:#3c6758}#enter-walk:focus-visible,.walk-bar button:focus-visible{outline:3px solid #6f9fda;outline-offset:3px}
#walk-ui{display:none}.walking #walk-ui{display:block}.walking .panel,.walking .toolbar{display:none}.walking #scene{cursor:grab}.walking #scene:active{cursor:grabbing}.walking canvas:focus{outline:none}.walk-status{position:absolute;top:126px;left:34px;font-size:.9rem;color:#35564a;background:#ffffffe0;border-radius:20px;padding:10px 15px;pointer-events:none}.walk-status>span:last-child{color:#7c8d85}.live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#4e8b6c;margin-right:7px}#walk-help{position:absolute;bottom:122px;left:50%;transform:translateX(-50%);margin:0;background:#ffffffdf;border-radius:20px;padding:9px 16px;font-size:.82rem;white-space:nowrap;color:#496558;pointer-events:none}.walk-bar{position:absolute;bottom:58px;left:50%;transform:translateX(-50%);display:flex;gap:5px;padding:6px;background:#fffffff2;border-radius:13px;box-shadow:0 8px 35px #2e454518}.walk-bar button{border:0;border-radius:8px;background:transparent;color:#536660;white-space:nowrap;padding:13px 16px;cursor:pointer;font-size:.875rem}.walk-bar button.active{background:#294c40;color:#fff}.walk-bar button:hover{background:#dfebe3;color:#294c40}#walk-stick,.touch-look{display:none}
@media(pointer:coarse){.walking #walk-stick{display:flex;align-items:center;justify-content:center;position:absolute;left:28px;bottom:178px;width:112px;height:112px;background:#ffffffa8;border:1px solid #ffffffc9;border-radius:50%;touch-action:none;user-select:none;box-shadow:0 4px 20px #21372e20}#stick-knob{width:44px;height:44px;border-radius:50%;background:#3e6e5bcc;pointer-events:none;box-shadow:0 3px 12px #233e3530}.walking .touch-look{display:block;position:absolute;right:25px;bottom:222px;font-size:.8rem;color:#35594a;background:#ffffffc9;padding:8px 12px;border-radius:18px;pointer-events:none}#mouse-lock{display:none}.walking #walk-help{display:none}}
@media(max-width:700px){.walk-status{left:20px;top:110px}.walk-bar{width:max-content;max-width:calc(100% - 24px);gap:1px;padding:5px;overflow-x:auto}.walk-bar button{font-size:.78rem;padding:12px 9px}#walk-help{font-size:.7rem;white-space:normal;width:90%;text-align:center;line-height:1.5}.walking .version{display:none}}

@media(min-width:701px){.toolbar button{padding:14px 14px}}

#navigation-panel{position:absolute;top:124px;left:34px;width:310px;padding:16px;background:#fffffff0;border:1px solid #ffffffc0;border-radius:14px;backdrop-filter:blur(14px);box-shadow:0 8px 30px #20392b12}#navigation-form label{display:block;font-size:.9rem;font-weight:600;margin-bottom:10px}.navigation-search{display:flex;gap:7px}.navigation-search input{min-width:0;width:100%;font:inherit;font-size:.9rem;border:1px solid #ccd9d3;border-radius:8px;padding:11px 10px;color:#244a3d;background:white}#navigate{border:0;border-radius:8px;padding:10px 15px;background:#294c40;color:white;cursor:pointer;white-space:nowrap}#navigate:disabled{opacity:.55;cursor:wait}.navigation-feedback{display:flex;gap:10px;align-items:flex-start;margin-top:10px}#navigation-status{font-size:.79rem;line-height:1.6;color:#506b60;margin:0;flex:1}#cancel-navigation{padding:3px 0;border:0;background:none;color:#526f63;cursor:pointer;font-size:.8rem}#navigation-panel :focus-visible{outline:3px solid #82b4ef;outline-offset:2px}.walking .walk-status{display:none}.walking #navigation-panel{top:124px}
@media(max-width:700px){#navigation-panel,.walking #navigation-panel{top:105px;left:18px;right:18px;width:auto;padding:12px 14px}#navigation-form label{margin-bottom:7px}.navigation-search input{font-size:16px;padding:9px 10px}.navigation-feedback{margin-top:7px}.panel{top:280px;max-height:calc(100svh - 430px)}.walking #navigation-panel{top:105px}#navigation-status{font-size:.76rem}}