:root{color-scheme:light;--ink:#253d35;--muted:#697569;--paper:rgba(246,243,230,.94);--line:rgba(60,81,65,.17);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink)}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#182922}button,select,input{font:inherit}button,select{color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button:focus-visible,select:focus-visible,input:focus-visible,canvas:focus-visible{outline:2px solid #a7613c;outline-offset:3px}button{border:1px solid var(--line);background:transparent;border-radius:6px;padding:8px 10px;line-height:1.25}button:hover,button[aria-pressed=true]{background:#e2e7d6}button[aria-current=location]{background:#e0e7d5;border-color:#759279}select{border:0;background:transparent;max-width:115px;padding:6px 1px}label{font-size:12px;white-space:nowrap}small{color:var(--muted)}h1,h2,h3,p{margin:0}h2{font-size:23px;font-weight:500}h3{font-size:14px;font-weight:600}canvas#c{display:block;width:100%;height:100%;touch-action:none;outline:none} [hidden]{display:none!important}.glass{background:var(--paper);border:1px solid var(--line);box-shadow:0 4px 24px #172b2420;border-radius:10px}
#toolbar{position:fixed;z-index:20;top:max(12px,env(safe-area-inset-top));left:max(12px,env(safe-area-inset-left));right:max(12px,env(safe-area-inset-right));padding:10px 14px;display:flex;align-items:center;gap:24px;justify-content:space-between}.brand{flex-shrink:0}.brand h1{font-size:22px;font-weight:500;letter-spacing:.1em}.brand h1 span{font-size:16px;letter-spacing:0}.brand small{display:block;font-size:10px;margin-top:3px}nav{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap;font-size:12px}nav label{display:flex;align-items:center;gap:3px;padding-left:4px}
#spots-panel{position:fixed;z-index:18;left:12px;top:98px;bottom:105px;width:310px;display:flex;flex-direction:column;padding:18px 14px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:18px}.panel-heading small{display:block;margin-top:4px;font-size:11px}.panel-heading button{font-size:23px;border:0;padding:3px 8px}#current-name{font-size:12px;line-height:1.6;margin:14px 0;color:var(--muted)}#spots-list{overflow:auto;overscroll-behavior:contain;min-height:0;padding-right:3px}#spots-list section{margin-bottom:20px}#spots-list h3{position:sticky;top:0;padding:8px 2px;background:#f6f3e6;border-bottom:1px solid var(--line);z-index:1;letter-spacing:.12em}.spot-entry{display:block;text-align:left;width:100%;border-color:transparent;margin-top:4px;padding:10px 8px}.spot-entry span{display:block;font-size:14px}.spot-entry small{display:block;font-size:11px;line-height:1.7;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;margin-top:4px}
#labels{position:fixed;inset:0;pointer-events:none;z-index:10}.spot-label{position:absolute;transform:translate(-50%,-100%);white-space:nowrap;font-size:12px;line-height:1.3;padding:5px 10px;color:#263d34;background:rgba(248,246,231,.86);border:1px solid #fff8;border-radius:4px;box-shadow:0 2px 12px #14291c33;pointer-events:auto}.spot-label:after{content:"";position:absolute;bottom:-7px;left:50%;width:1px;height:6px;background:#f2eddd}body[data-tour=true] #labels{display:none}
#minimap{position:fixed;z-index:15;right:14px;bottom:102px;width:244px;padding:7px;overflow:hidden}#map-canvas{display:block;width:100%;height:auto;cursor:crosshair;border-radius:6px}#minimap small{display:block;text-align:center;font-size:10px;margin-top:4px}#hud{position:fixed;top:91px;right:17px;color:#fcf7e9;background:#14291e8c;border-radius:4px;padding:4px 7px;font-size:10px;font-variant-numeric:tabular-nums;pointer-events:none;z-index:16}#walk-help{display:none;position:fixed;bottom:104px;left:50%;transform:translateX(-50%);color:#f4f0df;font-size:12px;text-shadow:0 1px 3px #000;background:#203d2777;border-radius:6px;padding:6px 10px;pointer-events:none}body[data-mode=walk] #walk-help{display:block}
#tour-controls{position:fixed;z-index:20;bottom:max(29px,calc(env(safe-area-inset-bottom) + 20px));left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;width:min(560px,calc(100% - 24px));padding:10px 12px;font-size:12px}#tour-controls button{white-space:nowrap}#tour-scrub{min-width:50px;flex:1;accent-color:#58725b}#tour-clock{font-size:10px;white-space:nowrap;font-variant-numeric:tabular-nums}body[data-tour=true] #tour-controls{bottom:calc(min(25vh,14.667vw) + 22px + env(safe-area-inset-bottom));opacity:.82}body[data-tour=true] #tour-controls:hover,body[data-tour=true] #tour-controls:focus-within{opacity:1}
#joystick{display:none;position:fixed;z-index:17;left:max(24px,env(safe-area-inset-left));bottom:max(137px,calc(env(safe-area-inset-bottom) + 137px));width:108px;height:108px;border:1px solid #f6f1dd9c;background:#223c2866;border-radius:50%;touch-action:none;user-select:none}#joystick-knob{position:absolute;top:34px;left:34px;width:40px;height:40px;border-radius:50%;background:#f5f1dcac;border:1px solid #fff8;pointer-events:none}#joystick small{position:absolute;bottom:-24px;left:0;right:0;text-align:center;color:#fff8e5;font-size:11px;text-shadow:0 1px 3px #000;pointer-events:none}
#credit{position:fixed;right:max(12px,env(safe-area-inset-right));bottom:max(6px,env(safe-area-inset-bottom));color:#f6f1dfb3;font-size:9px;text-shadow:0 1px 2px #000;pointer-events:none}#err{position:fixed;z-index:110;bottom:12px;left:12px;right:12px;max-height:35vh;overflow:auto;color:#ffd1b7;background:#33180df0;font:12px/1.5 monospace;white-space:pre-wrap;overflow-wrap:anywhere}#err:empty{display:none}
dialog{border:1px solid var(--line);border-radius:12px;max-width:560px;max-height:85dvh;overflow:auto;overscroll-behavior:contain;background:#f6f3e6;color:var(--ink);padding:26px;line-height:1.9}dialog::backdrop{background:#122d2570;backdrop-filter:blur(3px)}dialog p{margin:15px 0;font-size:14px}dialog h3{margin-top:24px}dialog .creator{color:#7a694a}#loading{position:fixed;inset:0;z-index:100;display:grid;place-items:center;background:#eef0e6;transition:opacity .6s;pointer-events:auto;padding:24px}#loading.loaded{opacity:0;pointer-events:none}.loading-card{width:min(430px,100%);text-align:center}.eyebrow{color:#819179;font-size:10px;letter-spacing:.23em}.loading-card h2{font-size:46px;letter-spacing:.18em;margin:28px 0 12px}.loading-card h2 span{font-size:22px;letter-spacing:0}.creator{font-size:14px;letter-spacing:.07em}.loading-card progress{width:100%;height:4px;border:0;appearance:none;margin-top:42px;accent-color:#5c7758}.loading-card progress::-webkit-progress-bar{background:#d7dfd0}.loading-card progress::-webkit-progress-value{background:#5c7758}.loading-card progress::-moz-progress-bar{background:#5c7758}#load-status{font-size:12px;margin-top:14px;color:#5c715b}.load-stages{display:flex;justify-content:space-between;list-style:none;padding:0;margin:22px 0;font-size:12px;color:#8c9988}.load-stages [data-state=active]{color:#263e2e;font-weight:600}.load-stages [data-state=done]{color:#58754d}.load-stages [data-state=done]:before{content:"✓ ";font-size:10px}.loading-note{font-size:11px;color:#8c9988;margin-top:35px;line-height:1.8}.failed #load-status{color:#9f462e}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(pointer:coarse){button{min-height:44px}body[data-mode=walk] #joystick{display:block}#walk-help{display:none!important}.spot-label{padding:10px 12px}}
@media(max-width:1050px){#toolbar{gap:10px}.brand small{display:none}.brand h1{font-size:19px}nav{gap:3px}nav button{padding:8px}#spots-panel{top:110px}#hud{top:104px}}
@media(max-width:700px){#toolbar{top:max(8px,env(safe-area-inset-top));left:8px;right:8px;display:block;padding:10px}.brand{margin-bottom:8px}.brand h1{font-size:20px}.brand small{display:block;position:absolute;right:12px;top:14px;font-size:8px}nav{justify-content:flex-start;gap:4px;font-size:11px}nav button{padding:7px 8px;min-height:34px}nav label{font-size:10px;flex:1}select{font-size:11px;padding:5px 0;min-height:34px}#spots-panel{top:auto;left:8px;right:8px;bottom:max(91px,calc(env(safe-area-inset-bottom) + 84px));height:min(52dvh,480px);width:auto;padding:14px;border-radius:16px 16px 10px 10px}#spots-panel:before{content:"";display:block;flex-shrink:0;width:34px;height:3px;background:#aab8a0;border-radius:4px;margin:0 auto 12px}#current-name{margin:7px 0}#minimap{right:10px;bottom:max(99px,calc(env(safe-area-inset-bottom) + 93px));width:158px;padding:5px}#minimap small{font-size:8px}#hud{top:auto;bottom:max(82px,calc(env(safe-area-inset-bottom) + 76px));left:12px;right:auto;font-size:9px}#tour-controls{gap:7px;padding:8px;width:calc(100% - 16px)}#tour-controls button{font-size:11px;padding:8px 9px}#tour-clock{font-size:9px}body[data-tour=true] #tour-controls{bottom:max(110px,calc(env(safe-area-inset-bottom) + 100px))}#credit{font-size:8px;text-align:center;left:8px;right:8px}dialog{width:calc(100% - 24px);padding:20px}.spot-label{font-size:11px}#joystick{width:96px;height:96px;left:20px}#joystick-knob{top:28px;left:28px}}
@media(max-height:520px) and (orientation:landscape){#spots-panel{top:100px;bottom:90px;height:auto}#minimap{width:155px}#joystick{bottom:98px;width:80px;height:80px}#joystick-knob{top:20px;left:20px}#walk-help{display:none!important}}
@media(prefers-reduced-motion:reduce){#loading{transition:none}}

.spot-entry .caption-en{font-size:10px;margin-top:2px;opacity:.8}.spot-entry small{white-space:normal}.spot-entry small[hidden]{display:none}

.label-tooltip{display:none;position:absolute;bottom:calc(100% + 8px);left:calc(50% + var(--tooltip-shift,0px));transform:translateX(-50%);width:260px;max-width:calc(100vw - 24px);padding:12px 14px;border:1px solid var(--line);border-radius:9px;background:#f6f3e6;color:#253d35;box-shadow:0 4px 18px #10232033;white-space:normal;text-align:left;pointer-events:none;line-height:1.6}.spot-label:hover,.spot-label:focus-visible{z-index:2}.spot-label:hover .label-tooltip,.spot-label:focus-visible .label-tooltip{display:block}.label-tooltip strong,.label-tooltip span,.label-tooltip small{display:block}.label-tooltip strong{font-size:14px}.label-tooltip span{font-size:12px;margin-top:4px}.label-tooltip small{font-size:10px;margin-top:4px;opacity:.8}.label-tooltip small[hidden]{display:none}

.spot-label[data-tooltip-below=true] .label-tooltip{bottom:auto;top:calc(100% + 8px)}
/* Continuous route and provenance controls. */
body[data-tour=true] #tour-controls{bottom:max(29px,calc(env(safe-area-inset-bottom) + 20px));opacity:1;width:min(710px,calc(100% - 24px))}
#route-details{position:fixed;z-index:19;bottom:90px;left:50%;transform:translateX(-50%);padding:6px 10px;display:flex;gap:10px;font-size:12px;max-width:calc(100% - 24px)}#route-waypoint{max-width:230px}#route-caption{position:fixed;z-index:16;left:14px;bottom:145px;padding:14px 18px;width:min(360px,calc(100% - 28px));line-height:1.6;pointer-events:none}#route-title{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:19px}#route-zh{font-size:13px;margin:6px 0}#route-en{display:block;font-size:11px}#route-next{margin-top:8px;font-size:11px;color:var(--muted)}#source-legend{list-style:none;padding:0}#source-legend li{display:flex;gap:10px;align-items:center;margin:10px 0;font-size:13px}#source-legend i{width:16px;height:16px;border-radius:3px;flex-shrink:0}#route-options{display:flex;gap:14px;flex-wrap:wrap}#route-options a{color:#58725b;font-size:13px}#route-options [aria-disabled=true]{color:#898b7d}#route-missing{color:#954932}#route-stop-list{padding-left:22px}#route-stop-list button{border:0;text-align:left}body[data-tour=true] #walk-help,body[data-tour=true] #joystick{display:none}
@media(max-width:700px){#route-details{bottom:94px;width:calc(100% - 20px);justify-content:space-between}#route-waypoint{max-width:190px;font-size:11px}#route-caption{bottom:152px;width:calc(100% - 188px);left:10px;padding:10px;max-height:32vh;overflow:auto}#route-title{font-size:15px}#route-zh{font-size:11px}#route-en{font-size:9px}#tour-controls{gap:4px}#tour-controls label{font-size:10px}#route-speed{max-width:42px}#minimap{bottom:152px}#tour-clock{font-size:8px}#hud{bottom:133px}#spots-panel{bottom:145px}}
.load-stages [data-state=failed]{color:#9f462e}.load-stages [data-state=failed]:before{content:"× ";font-size:10px}#load-details{margin:18px 0;text-align:left;font-size:12px;color:#8b442f;line-height:1.6}#load-failures{padding-left:20px;overflow-wrap:anywhere;max-height:160px;overflow:auto}#load-dismiss{font-size:12px}#loading.partial{inset:auto 16px 88px auto;display:block;width:min(360px,calc(100% - 32px));padding:14px 18px;border:1px solid var(--line);border-radius:12px;box-shadow:0 6px 24px #122d2526;background:#f6f3e6ed}#loading.partial .loading-card{width:100%}#loading.partial .loading-card>h2,#loading.partial .loading-card>.eyebrow,#loading.partial .loading-card>.creator,#loading.partial progress,#loading.partial .load-stages,#loading.partial .loading-note{display:none}#loading.partial #load-status{margin:0;color:#8b442f}#loading.partial #load-details{margin:10px 0}