:root{--ink:#25332e;--muted:#78827d;--line:#dde2dc;--paper:#f8faf6;--green:#37634c;--accent:#b9d494}*{box-sizing:border-box}body{margin:0;font:14px/1.6 "PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);overflow:hidden;background:#dfe7e7}button,input{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 12px;border-radius:5px;transition:background .15s}button:hover{background:#eaf0e6}button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--green);outline-offset:3px}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:wait}[hidden]{display:none!important}#viewport{position:fixed;inset:0}#viewport canvas{width:100%;height:100%;display:block;touch-action:none}header{position:fixed;inset:0 0 auto;height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:rgba(248,250,246,.95);border-bottom:1px solid var(--line);z-index:4}.brand{display:flex;align-items:center;gap:14px}.mark{font:22px Georgia,serif;color:#fff;background:var(--green);padding:8px 10px;border-radius:3px}h1{font-size:19px;letter-spacing:1px;margin:0;font-weight:600}h1 span{font-size:14px;color:var(--muted);margin-left:12px;font-weight:400}.brand p{margin:2px 0 0;color:var(--muted);font-size:11px;letter-spacing:1px}.header-right{display:flex;align-items:center;gap:10px}.status{font-size:12px;padding:5px 10px;background:#ece9d8;color:#79682f;border-radius:3px;margin-right:10px}.panel{position:fixed;z-index:3;left:24px;top:106px;width:262px;max-height:calc(100vh - 173px);overflow:auto;background:rgba(248,250,246,.96);padding:23px;border:1px solid rgba(255,255,255,.8);border-radius:7px;box-shadow:0 8px 30px #26352e12;scrollbar-width:thin}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--green)}h2{font-size:24px;font-weight:500;margin:6px 0 8px}.intro{font-size:12px;color:var(--muted);margin:0 0 19px}.mode-switch{display:flex;background:#e7ece4;padding:3px;border-radius:5px;margin-bottom:23px}.mode-switch button{width:50%;padding:8px 2px;border:0;background:transparent;font-size:12px}.mode-switch .active{background:var(--green);color:#fff}.section-label{display:block;font-size:11px;color:var(--muted);letter-spacing:1px;margin-bottom:10px}.view-list{display:grid;gap:4px}.view-list button{text-align:left;border-color:transparent;background:transparent;font-size:12px;display:flex;align-items:center;gap:13px;padding:8px}.view-list button span{font-size:10px;color:#8a958d}.view-list button.active{background:#e5edde}.divider{height:1px;background:var(--line);margin:19px 0}.toggle{display:flex;justify-content:space-between;align-items:center;font-size:12px;margin:9px 0}.toggle input{accent-color:var(--green);width:16px;height:16px}.slider-label{display:block;font-size:12px;margin-top:13px}.slider-label input{display:block;width:100%;accent-color:var(--green);height:16px;margin:8px 0 0}details{font-size:12px;margin:16px 0;color:var(--muted)}summary{cursor:pointer;color:var(--ink)}details p{font-size:11px}details input{width:75px;margin-left:8px;border:1px solid var(--line);padding:3px}details button{margin-top:8px;width:100%}.export{width:100%;font-size:12px;margin-top:10px;background:var(--green);color:white;border-color:var(--green)}.export:hover{background:#294a39}.export-note{font-size:10px;line-height:1.6;color:var(--muted);margin-bottom:0}footer{position:fixed;inset:auto 0 0;z-index:4;height:43px;background:rgba(248,250,246,.95);border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 28px;font-size:11px;color:#66766b}footer>div{display:flex;align-items:center;gap:10px}.dot{width:6px;height:6px;background:var(--green);border-radius:50%}.sep{color:#bec8bd}#labels-layer{position:fixed;inset:0;pointer-events:none}.building-label{position:absolute;background:#f8faf6e8;border:1px solid #fff9;box-shadow:0 2px 8px #0001;padding:5px 9px;border-radius:3px;white-space:nowrap;font-size:11px;transform:translate(-50%,-100%);color:#455345}.building-label small{color:#879184;margin-right:6px}#reference{position:fixed;right:24px;top:106px;width:min(470px,40vw);padding:10px;background:var(--paper);border-radius:6px;box-shadow:0 8px 35px #0002;z-index:5}.ref-title{display:flex;justify-content:space-between;align-items:center;font-size:12px;margin-bottom:8px}.ref-title button{border:0;font-size:11px;padding:2px 6px}#ref-image{width:100%;display:block;border-radius:3px}#photo-tabs{display:flex;gap:4px;margin-top:8px}#photo-tabs button{flex:1;padding:4px;font-size:11px}#photo-tabs button.active{background:var(--green);color:#fff}#photo-caption{font-size:11px;color:var(--muted);margin:7px 0 0}#loading{position:fixed;inset:82px 0 43px;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;background:#e6eae2;z-index:9}#loading span{color:var(--muted);font-size:12px}#toast{position:fixed;bottom:64px;left:50%;transform:translateX(-50%);background:#253b30;color:white;padding:11px 20px;max-width:80vw;border-radius:5px;z-index:12;font-size:12px}#crosshair{position:fixed;left:50%;top:50%;color:white;text-shadow:0 1px 2px #000;pointer-events:none}#walk-note{position:fixed;bottom:63px;left:50%;transform:translateX(-50%);padding:7px 15px;background:#f8faf6d9;border-radius:4px;font-size:11px;white-space:nowrap}dialog{width:min(520px,90vw);border:1px solid var(--line);border-radius:8px;padding:28px;color:var(--ink);box-shadow:0 20px 80px #0003}dialog::backdrop{background:#14261d66}dialog p{font-size:13px;color:#667568}dialog button{background:var(--green);color:#fff;margin-top:12px}#panel-toggle{position:fixed;left:24px;bottom:62px;z-index:5;padding:5px 12px;font-size:11px}.mobile-movement{position:fixed;right:20px;bottom:80px;z-index:8;text-align:center}.mobile-movement button{padding:12px;margin:2px;background:#f7faf0d9}.mobile-movement{display:none}@media(pointer:coarse){.mobile-movement{display:block}}@media(max-width:800px){header{height:70px;padding:0 15px}.mark{display:none}h1{font-size:16px}h1 span{font-size:12px;margin-left:6px}.header-right{gap:5px}.header-right button{font-size:11px;padding:6px}.status{display:none}.panel{top:86px;left:12px;width:224px;padding:17px;max-height:calc(100vh - 157px)}#reference{top:86px;right:12px;width:min(430px,calc(100vw - 24px))}footer{padding:0 12px;font-size:10px}#coordinates{display:none}#hint{font-size:9px}#panel-toggle{left:12px}#walk-note{bottom:52px;max-width:95vw;white-space:normal;font-size:10px}.building-label{font-size:10px}}

#lighting-panel{position:fixed;bottom:68px;right:24px;width:245px;background:rgba(248,250,246,.94);border:1px solid #ffffffa8;border-radius:6px;padding:15px 17px;z-index:3;box-shadow:0 8px 28px #18231c18;backdrop-filter:blur(12px)}.light-heading{display:flex;justify-content:space-between;font-size:12px;margin-bottom:10px}.light-version{color:var(--muted);font-size:10px}.light-presets{display:flex;gap:4px}.light-presets button{flex:1;padding:7px 5px;font-size:12px}.light-presets .active{background:var(--green);border-color:var(--green);color:white}#lighting-caption{font-size:10px;color:var(--muted);margin:9px 0 0}#lighting-panel details{margin:9px 0 0;border-top:1px solid var(--line);padding-top:9px}#lighting-panel details p{margin-bottom:0;font-size:10px}.quality-label{display:flex;align-items:center;justify-content:space-between;margin-top:12px}.quality-label select{background:white;border:1px solid var(--line);padding:5px;border-radius:3px;font:11px "PingFang SC",sans-serif;color:var(--ink)}@media(max-width:800px){#lighting-panel{right:12px;bottom:66px;width:206px;padding:12px}#lighting-panel details{max-height:200px;overflow:auto}#walk-note{left:12px;transform:none;max-width:calc(100vw - 230px);bottom:103px}.mobile-movement{bottom:264px}}