:root{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#213f38;background:#f7f8f4;font-synthesis:none;--green:#173e36;--line:#dce3db;--muted:#6f827b}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer;border:0;color:inherit}button:focus-visible{outline:3px solid #b78a42;outline-offset:4px}button:disabled{cursor:wait;opacity:.55}[hidden]{display:none!important}.masthead{height:112px;display:flex;align-items:center;justify-content:space-between;padding:0 36px;border-bottom:1px solid var(--line);background:#fffefa;position:relative;z-index:5}.brand{display:flex;align-items:center;gap:19px}.seal{display:grid;place-items:center;width:52px;height:58px;color:#eee6d0;background:var(--green);font:32px Georgia,"SimSun",serif;border-radius:3px 3px 18px 3px;box-shadow:inset 0 0 0 5px var(--green),inset 0 0 0 6px #a7b4a1}.eyebrow{font:11px/1.5 Arial,sans-serif;letter-spacing:2.3px;margin:0 0 8px;color:#72867b}h1{font-size:25px;letter-spacing:2px;margin:0;font-weight:600}h1 span{margin-left:22px;font-weight:400}.daylight{display:flex;align-items:center;gap:10px;font-size:14px}.daylight svg{width:22px;height:22px;fill:none;stroke:#ae894a;stroke-width:1.5}.daylight small{font:10px Arial;letter-spacing:1.8px;margin-left:18px;color:#86948b}.workspace{display:flex;height:calc(100dvh - 112px);min-height:480px}.sidebar{width:282px;flex-shrink:0;padding:34px 24px 22px;background:#fffefa;display:flex;flex-direction:column;border-right:1px solid var(--line);z-index:4;overflow:auto}.section-heading{display:flex;justify-content:space-between;font-size:13px;letter-spacing:1px;align-items:center}.counter{color:#8b9b91;font:11px Arial;letter-spacing:1.5px}.sidebar h2{font:21px/1.5 Georgia,"SimSun",serif;margin:16px 0 5px;letter-spacing:1px}.intro{font-size:12px;color:var(--muted);margin:0 0 24px;line-height:1.8}nav{display:flex;flex-direction:column;gap:8px}.landmark-button{display:flex;text-align:left;align-items:center;padding:14px 12px;background:transparent;border:1px solid transparent;border-bottom-color:#e8ece5;border-radius:3px;transition:background .2s}.landmark-button:hover{background:#f0f3ed}.landmark-button.active{background:var(--green);color:#fff8e7;border-color:var(--green)}.landmark-button .number{font:12px Georgia,serif;width:29px;color:#91a18f}.landmark-button.active .number{color:#b8c7ad}.landmark-button .name{font-size:15px;letter-spacing:1px}.landmark-button small{display:block;color:#8b9a91;font-size:10px;letter-spacing:.6px;margin-top:4px}.landmark-button.active small{color:#b6c7bb}.landmark-button .chevron{margin-left:auto;color:#96a88f;font-size:18px}.sidebar-foot{margin-top:auto;padding-top:24px}.small-rule{display:block;width:24px;height:2px;background:#b18c51}.sidebar-foot p{font-size:13px;margin:12px 0 7px;letter-spacing:1px}.sidebar-foot small{font-size:11px;line-height:1.8;color:#86948b}#viewer{flex:1;position:relative;min-width:0;overflow:hidden;background:#e8eeea}#canvas-host,#labels{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}#labels{pointer-events:none;overflow:hidden}.map-label{position:absolute;pointer-events:auto;transform:translate(-50%,-100%);white-space:nowrap;padding:8px 13px;background:rgba(255,255,250,.94);border:1px solid #cbd7cb;border-radius:3px;box-shadow:0 4px 15px #20453614;font-size:14px;letter-spacing:.6px;transition:background .15s;z-index:2}.map-label::after{content:"";position:absolute;left:50%;height:18px;top:100%;border-left:1px solid #547767}.map-label::before{content:"";position:absolute;left:calc(50% - 3px);top:calc(100% + 16px);width:5px;height:5px;border-radius:50%;background:#547767}.map-label.active{background:var(--green);color:#fff7df;border-color:var(--green);z-index:5}.view-switch{position:absolute;top:24px;left:26px;display:flex;padding:4px;background:#fffffff0;border:1px solid #dae3d8;border-radius:5px;box-shadow:0 4px 20px #273f3210}.view-switch button{padding:10px 16px;font-size:13px;border-radius:3px;background:none}.view-switch .active{color:#fff8e9;background:var(--green)}.scene-note{position:absolute;top:37px;right:26px;display:flex;gap:8px;align-items:center;color:#607768;font-size:12px;letter-spacing:.3px}.status-dot{width:5px;height:5px;border-radius:100%;background:#a78b57}.tools{position:absolute;right:25px;top:103px;background:#fffffff2;padding:5px;border:1px solid #d8e1d6;box-shadow:0 4px 24px #25492e0a;border-radius:5px;display:flex;flex-direction:column;gap:2px}.tools button{display:grid;place-items:center;background:none;width:40px;height:39px;font-size:24px;border-radius:3px}.tools button:hover{background:#eaf0e7}.tools button svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5}.tools>span{border-top:1px solid #e1e7df;margin:3px 7px}.compass{position:absolute;right:31px;bottom:73px;width:38px;text-align:center;font:11px Georgia;pointer-events:none;color:#577668}.compass svg{display:block;width:38px;height:38px;fill:#426a5b;transform-origin:center}.compass span{display:block;margin-bottom:1px}.viewer-footer{position:absolute;bottom:0;left:0;right:0;padding:19px 26px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#698174;background:linear-gradient(transparent,#e8eeeae6);pointer-events:none;gap:18px}.separator{margin:0 12px;opacity:.4}.footer-title{font:10px Arial;letter-spacing:1.8px;white-space:nowrap}.footer-title b{margin:0 7px;color:#a98c59}.mobile-hint{display:none}.selection{position:absolute;bottom:72px;left:26px;width:272px;background:#fffffff5;border:1px solid #d3ded0;border-top:3px solid #ab8b52;box-shadow:0 12px 40px #19382b17;padding:22px 22px 17px;border-radius:3px;z-index:5}.selection-kicker{font:10px Arial;color:#8c9b8c;letter-spacing:1.8px}.selection h2{font:25px Georgia,"SimSun",serif;letter-spacing:2px;margin:12px 0}.selection p{font-size:13px;line-height:1.9;color:#758379;margin:0 0 19px}.close{position:absolute;right:8px;top:8px;background:transparent;font-size:22px;color:#859489}.focus-button{width:100%;display:flex;justify-content:space-between;padding:12px 0 0;border-top:1px solid #e0e6db;background:none;font-size:13px}.focus-button span{font-size:19px;line-height:15px}.loading{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#e8eeea;z-index:10;color:#254b3d;transition:opacity .5s}.loading h2{font:24px Georgia,"SimSun",serif;letter-spacing:4px}.loading p{font-size:14px;color:#728477}.loading button{background:#173e36;color:white;padding:12px 24px;border-radius:4px}.loader-ring{height:44px;width:44px;border:1px solid #bacabd;border-top:2px solid #486b51;border-radius:50%;animation:spin 1.1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media(max-height:780px) and (min-width:801px){.sidebar{padding-top:22px}.landmark-button{padding:9px 10px}.sidebar-foot{padding-top:18px}.intro{margin-bottom:14px}.sidebar h2{font-size:18px}.masthead{height:92px}.workspace{height:calc(100dvh - 92px)}}@media(max-width:1000px){.sidebar{width:235px;padding-left:18px;padding-right:18px}.daylight small{display:none}.masthead{padding:0 23px}h1{font-size:21px}h1 span{margin-left:12px}.scene-note{display:none}.footer-title{display:none}}@media(max-width:800px){.masthead{height:94px;padding:0 18px}.seal{width:38px;height:46px;font-size:25px}.brand{gap:12px}.eyebrow{font-size:8px;letter-spacing:1.3px;margin-bottom:6px}h1{font-size:18px;letter-spacing:1px}h1 span{display:block;font-size:15px;margin:5px 0 0}.daylight{font-size:12px;gap:6px}.daylight svg{width:18px}.workspace{height:calc(100dvh - 94px);min-height:500px;flex-direction:column-reverse}.sidebar{width:100%;height:76px;padding:10px 12px;border-top:1px solid var(--line);flex-shrink:0;overflow-x:auto}.sidebar>div,.sidebar>h2,.sidebar>.intro{display:none}nav{flex-direction:row;gap:7px;height:100%}.landmark-button{white-space:nowrap;padding:8px 13px;border:1px solid #dde5dc;flex-shrink:0}.landmark-button small,.landmark-button .chevron{display:none}.landmark-button .number{width:23px}.landmark-button .name{font-size:14px}.view-switch{top:15px;left:14px}.view-switch button{padding:9px 13px}.tools{right:13px;top:78px}.tools button{width:36px;height:35px}.selection{left:14px;bottom:48px;width:230px;padding:16px}.selection h2{font-size:22px;margin:9px 0}.selection p{font-size:12px;margin-bottom:11px}.viewer-footer{padding:15px 14px}.viewer-footer>span:first-child{display:none}.viewer-footer .mobile-hint{display:block;font-size:11px}.compass{right:16px;bottom:45px}.map-label{font-size:12px;padding:6px 9px}.loading h2{font-size:21px}}