@charset "UTF-8";
:root{--ink:#193e34;--muted:#697b6c;--paper:#f2f1e8;--line:rgba(25,62,52,.15);--accent:#a48b54;--safe-bottom:env(safe-area-inset-bottom,0px);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}#app{position:relative;height:100dvh}body{background:#e5e9df}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:wait;opacity:.45}button:focus-visible,a:focus-visible,#viewport:focus-visible{outline:2px solid #a48b54;outline-offset:5px}button{border:0}a{color:inherit;text-decoration:none}button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}button{transition:background .2s,transform .2s}button:not(:disabled):active{transform:translateY(1px)}[hidden]{display:none!important}#viewport{position:absolute;inset:0;touch-action:none}#viewport canvas{position:absolute;inset:0;display:block;width:100%;height:100%;outline:none}.vignette{position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(242,241,232,.78),transparent 24%,transparent 68%,rgba(242,241,232,.8));z-index:1}
.masthead{position:absolute;top:34px;left:38px;z-index:5}.brand{display:flex;gap:15px;align-items:center;width:max-content}.seal{display:grid;place-content:center;text-align:center;font:25px/1.15 "Songti SC","STSong","SimSun",serif;border:1px solid var(--ink);width:49px;height:65px;border-radius:2px;letter-spacing:2px;position:relative}.seal:after{content:"";position:absolute;inset:3px;border:1px solid rgba(25,62,52,.35)}.eyebrow{font-size:9px;letter-spacing:.2em;font-weight:600;display:block;color:var(--muted)}h1{font-size:29px;font-family:"Songti SC","STSong","SimSun",serif;font-weight:500;letter-spacing:.16em;margin:6px 0 5px;line-height:1.2}h1 span{font-family:inherit;font-size:21px;letter-spacing:.07em;margin-left:12px}.brand-caption{font-size:10px;letter-spacing:.28em;color:var(--muted)}.attribution{font-size:9px;display:block;margin-top:15px;color:var(--muted);letter-spacing:.025em}.attribution:hover{text-decoration:underline}
.top-right{position:absolute;z-index:6;right:35px;top:36px;display:flex;align-items:center;gap:20px}.edition{font-size:11px;letter-spacing:.12em;display:flex;align-items:center;gap:8px}.edition i{width:5px;height:5px;border-radius:50%;background:#4e7862}.icon-button{width:39px;height:39px;background:rgba(246,246,238,.72);border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;backdrop-filter:blur(14px)}.icon-button:hover{background:var(--paper)}.info-panel{position:absolute;right:35px;top:90px;width:325px;z-index:9;padding:25px 27px 23px;background:rgba(247,247,239,.96);border:1px solid var(--line);border-radius:3px;box-shadow:0 15px 65px rgba(23,50,36,.13);backdrop-filter:blur(20px);max-height:calc(100% - 190px);overflow:auto}.panel-heading{display:flex;align-items:center;justify-content:space-between}.close-button{font-size:24px;background:none;font-weight:300;line-height:1;padding:0 0 0 15px}.info-panel h2{font:22px "Songti SC","STSong","SimSun",serif;font-weight:500;letter-spacing:.08em;margin:20px 0 14px}.info-panel p{font-size:12px;line-height:1.9;color:#53695a;margin:0 0 18px}.legend{display:grid;grid-template-columns:1fr 1fr;gap:13px 15px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;font-size:11px;color:#53695a}.legend span{display:flex;align-items:center;gap:8px}.swatch{height:7px;width:17px;border-radius:2px;display:block}.swatch.building{background:#9e9e87}.swatch.water{background:#6b9a92}.swatch.garden{background:#82986c}.swatch.path{background:#c7bda4}.info-panel h3{font-size:12px;font-weight:500;margin:21px 0 16px;letter-spacing:.1em}.info-panel dl{display:grid;grid-template-columns:63px 1fr;column-gap:8px;row-gap:12px;font-size:10px;line-height:1.8;margin:0 0 20px}.info-panel dt{font-weight:600}.info-panel dd{margin:0;color:#697b6c}.info-panel .fineprint{font-size:10px;color:#7c877b;margin-bottom:14px}.source-link{font-size:10px;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px}.source-link:hover{color:var(--accent)}
.loading-screen{position:absolute;inset:0;z-index:4;background:#e7ebe3;transition:opacity .8s,visibility .8s}.loading-screen.finished{opacity:0;visibility:hidden;pointer-events:none}.preview-image,.loading-shade{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.preview-image{filter:saturate(.75)}.loading-shade{background:linear-gradient(90deg,rgba(235,238,226,.93),rgba(235,238,226,.15) 75%),linear-gradient(0deg,rgba(242,241,232,.68),transparent 50%,rgba(242,241,232,.55))}.loading-card{position:absolute;top:44%;left:8%;transform:translateY(-25%);max-width:370px}.loading-card h2{font:36px/1.5 "Songti SC","STSong","SimSun",serif;letter-spacing:.08em;font-weight:400;margin:18px 0 12px}.loading-card p{font-size:12px;line-height:1.9;color:#5d7262;margin:0 0 25px;max-width:310px}.progress-track{height:2px;width:305px;background:rgba(25,62,52,.12);overflow:hidden}.progress-track i{display:block;width:0%;height:100%;background:var(--ink);transition:width .4s}.progress-track.indeterminate i{width:25%;animation:progress 1.7s ease-in-out infinite}.load-meta{display:flex;justify-content:space-between;font-size:9px;color:#71816e;width:305px;margin-top:10px;letter-spacing:.05em}.pill{border-radius:30px;padding:11px 20px;font-size:11px;display:flex;gap:25px;align-items:center}.dark{background:var(--ink);color:var(--paper)}.loading-card .pill{margin-top:25px}.preview-caption{position:absolute;bottom:145px;right:35px;font-size:9px;color:#6a7e6e;letter-spacing:.05em}.toast{position:absolute;z-index:11;top:145px;left:50%;transform:translateX(-50%);background:rgba(25,62,52,.9);color:#f3f1e6;border:1px solid rgba(255,255,255,.2);border-radius:30px;padding:12px 22px;font-size:11px;max-width:90%;text-align:center;line-height:1.7;backdrop-filter:blur(10px);pointer-events:none}
.side-actions{position:absolute;right:35px;bottom:180px;z-index:3;display:flex;flex-direction:column;gap:9px}.tool-button{display:flex;align-items:center;justify-content:center;gap:7px;border-radius:25px;width:74px;height:37px;background:rgba(245,246,238,.78);border:1px solid var(--line);backdrop-filter:blur(12px)}.tool-button svg{width:16px;height:16px}.tool-button span{font-size:10px}.tool-button:hover{background:var(--paper)}.compass{position:absolute;left:39px;bottom:172px;width:46px;height:72px;z-index:3;text-align:center;color:#53695a}.compass span{display:block;font-size:9px;letter-spacing:.05em}.compass svg{width:36px;height:36px;margin-top:3px;transition:transform .2s}.compass i{display:block;width:28px;height:1px;background:var(--line);margin:auto}.scene-caption{position:absolute;left:105px;bottom:186px;z-index:3;display:flex;flex-direction:column;gap:7px;pointer-events:none}.scene-caption strong{font:25px "Songti SC","STSong","SimSun",serif;font-weight:400;letter-spacing:.14em}.scene-caption>span:last-child{font-size:10px;letter-spacing:.1em;color:var(--muted)}
.bottom-dock{position:absolute;bottom:calc(48px + var(--safe-bottom));left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 76px);display:flex;align-items:stretch;gap:12px;z-index:5}.camera-bar{display:flex;background:rgba(247,247,239,.89);border:1px solid var(--line);border-radius:4px;padding:5px;overflow-x:auto;scrollbar-width:none;backdrop-filter:blur(20px);box-shadow:0 5px 25px rgba(20,40,25,.05)}.camera-bar::-webkit-scrollbar{display:none}.camera-button{background:none;border-radius:2px;padding:13px 17px;min-width:79px;white-space:nowrap;position:relative;color:#65786a;text-align:left}.camera-button .camera-index{display:block;font-size:8px;letter-spacing:.12em;margin-bottom:5px;opacity:.65}.camera-button .camera-name{font-size:11px;letter-spacing:.07em}.camera-button:hover{background:rgba(25,62,52,.05)}.camera-button.active{background:#e4e9dd;color:var(--ink)}.camera-button.active:after{content:"";position:absolute;right:10px;top:14px;width:3px;height:3px;background:var(--ink);border-radius:50%}.camera-placeholder{font-size:11px;padding:15px 28px;color:var(--muted)}.walk-button{background:var(--ink);color:#f5f3e9;border:1px solid var(--ink);border-radius:4px;padding:0 21px;display:flex;align-items:center;gap:10px;white-space:nowrap;box-shadow:0 5px 25px rgba(20,40,25,.1)}.walk-button span{font-size:11px;letter-spacing:.06em}.walk-button svg{width:19px;height:19px}.walk-button:hover{background:#2e5545}.walk-button[aria-pressed="true"]{background:#f3f3e9;color:var(--ink)}.map-footer{position:absolute;z-index:3;bottom:calc(20px + var(--safe-bottom));left:38px;right:35px;display:flex;justify-content:space-between;color:#6a7e6e;font-size:9px;letter-spacing:.05em;pointer-events:none}.map-footer b{font-weight:400;opacity:.5;margin:0 7px}.walk-controls{position:absolute;inset:0;z-index:3;pointer-events:none;display:none}.direction-pad{position:absolute;left:25px;bottom:180px;display:grid;grid-template:repeat(2,42px)/repeat(3,42px);gap:4px}.direction-pad button,.height-pad button{width:42px;height:42px;pointer-events:auto;background:rgba(243,245,236,.75);border:1px solid var(--line);border-radius:50%;backdrop-filter:blur(10px);font-size:20px;touch-action:none;user-select:none}.direction-pad .up{grid-area:1/2}.direction-pad .left{grid-area:2/1}.direction-pad .down{grid-area:2/2}.direction-pad .right{grid-area:2/3}.height-pad{position:absolute;right:25px;bottom:180px;display:flex;flex-direction:column;gap:6px}.no-script{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:30px;background:var(--paper);z-index:20;font-size:14px;line-height:2}.no-script a{text-decoration:underline;display:block}
@keyframes progress{0%{transform:translateX(-100%)}100%{transform:translateX(500%)}}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation-duration:0.01ms!important;animation-iteration-count:1!important}}
@media(max-width:1000px){.camera-button{padding:12px;min-width:72px}.bottom-dock{max-width:calc(100% - 42px)}.walk-button{padding:0 15px}.camera-name{font-size:10px!important}.scene-caption{bottom:175px}.compass{bottom:161px}.side-actions{bottom:168px}}
@media(max-width:700px){.masthead{top:calc(21px + env(safe-area-inset-top,0px));left:22px}.seal{width:36px;height:49px;font-size:19px}.brand{gap:11px}.eyebrow{font-size:7px;letter-spacing:.15em}h1{font-size:25px;margin:4px 0}h1 span{font-size:18px;margin-left:8px}.brand-caption{font-size:8px;letter-spacing:.18em}.attribution{font-size:7px;margin-top:11px}.top-right{top:calc(25px + env(safe-area-inset-top,0px));right:21px}.edition{display:none}.icon-button{width:32px;height:32px}.icon-button svg{width:18px;height:18px}.info-panel{right:20px;top:95px;width:min(325px,calc(100% - 40px));max-height:calc(100% - 250px)}.bottom-dock{width:calc(100% - 32px);max-width:none;bottom:calc(37px + var(--safe-bottom));gap:7px}.camera-bar{min-width:0;flex:1;padding:4px}.camera-button{padding:11px 12px;min-width:66px}.camera-button .camera-index{font-size:7px;margin-bottom:4px}.camera-button .camera-name{font-size:10px}.walk-button{padding:0 13px;flex-direction:column;justify-content:center;gap:5px}.walk-button span{font-size:9px}.walk-button svg{width:17px;height:17px}.map-footer{left:20px;right:20px;bottom:calc(15px + var(--safe-bottom));font-size:7px}.map-footer>span:last-child{display:none}.map-footer b{margin:0 5px}.scene-caption{left:75px;bottom:calc(140px + var(--safe-bottom));gap:6px}.scene-caption strong{font-size:22px}.scene-caption>span:last-child{font-size:9px}.compass{left:23px;bottom:calc(125px + var(--safe-bottom));width:35px}.compass svg{width:29px;height:29px}.compass span{font-size:8px}.side-actions{right:20px;bottom:calc(143px + var(--safe-bottom));gap:7px}.tool-button{width:34px;height:34px}.tool-button span{display:none}.loading-card{left:8%;top:42%;right:8%;max-width:360px}.loading-card h2{font-size:30px;margin:16px 0 10px}.loading-card p{font-size:11px}.progress-track,.load-meta{width:100%;max-width:280px}.preview-caption{right:20px;bottom:calc(118px + var(--safe-bottom));font-size:7px}.toast{top:125px;font-size:10px;border-radius:8px;padding:10px 16px;width:max-content;max-width:calc(100% - 40px)}body.walking .walk-controls{display:block}body.walking .scene-caption,body.walking .compass,body.walking .side-actions{display:none}.direction-pad{bottom:calc(146px + var(--safe-bottom))}.height-pad{bottom:calc(146px + var(--safe-bottom))}}
/* Keep controls readable over both shaded foliage and bright paving. */
.masthead{padding:16px 20px;background:rgba(242,241,232,.88);border:1px solid rgba(25,62,52,.12);border-radius:4px;backdrop-filter:blur(12px)}
.scene-caption{padding:12px 16px;background:rgba(242,241,232,.9);border-radius:3px;backdrop-filter:blur(10px)}
@media(max-width:700px){.masthead{padding:10px 12px}.scene-caption{padding:10px 12px}}
.walk-speed-control{position:absolute;right:35px;bottom:calc(130px + var(--safe-bottom));z-index:6;display:flex;align-items:center;gap:12px;padding:8px 12px;background:rgba(247,247,239,.95);border:1px solid var(--line);border-radius:4px;backdrop-filter:blur(12px);font-size:12px}
.walk-speed-control select{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:3px;padding:7px 28px 7px 10px;min-height:36px;cursor:pointer}
.walk-speed-control select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:700px){.walk-speed-control{right:20px;bottom:calc(250px + var(--safe-bottom));gap:9px;font-size:11px}}