@font-face{font-family:CitySerif;src:local("Noto Serif CJK SC"),local("Source Han Serif SC"),local("STSong"),local("SimSun");font-display:swap}:root{--ink:#080f19;--surface:#101d2b;--border:#304551;--ivory:#e5ebea;--muted:#91a5ad;--jade:#8cdbce;--ember:#ff8564;--mono:Consolas,"Courier New",monospace;--sans:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;--serif:CitySerif,"Songti SC",serif;color-scheme:dark;font-family:var(--sans);font-synthesis:none;color:var(--ivory);background:var(--ink)}*{box-sizing:border-box}body{margin:0;overflow:hidden}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;border:0;cursor:pointer;background:none}button:disabled{cursor:wait;opacity:.5}button:focus-visible,a:focus-visible{outline:2px solid var(--jade);outline-offset:5px}button{transition:background .2s,color .2s,border-color .2s,opacity .2s}button:hover{color:var(--jade)}button svg{width:19px;height:19px;flex-shrink:0}button[hidden],[hidden]{display:none!important}a{color:inherit;text-decoration:none}#app,#viewport,.vignette{position:fixed;inset:0}#viewport canvas{display:block;width:100%;height:100%;outline:none;touch-action:none}.vignette{pointer-events:none;background:linear-gradient(90deg,rgba(6,14,24,.88),rgba(6,14,24,.24) 19%,transparent 34%),linear-gradient(0deg,rgba(6,14,24,.9),transparent 20%,transparent 88%,rgba(6,14,24,.7));z-index:1}.topbar{position:absolute;top:0;left:0;right:0;height:108px;margin:0 46px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #aacbd215;z-index:3}.brand{display:flex;align-items:center;gap:15px;font-size:19px;letter-spacing:.25em}.seal{display:grid;place-items:center;width:40px;height:43px;color:var(--ember);border:1px solid #ff85646b;font-family:var(--serif);font-size:25px;border-radius:3px;letter-spacing:0}.brand-dot{color:var(--muted);font-size:16px}.brand small{display:block;font:8px var(--mono);letter-spacing:2.5px;margin-top:7px;color:var(--muted)}.top-center{font-size:10px;letter-spacing:1.5px;color:#b2c4ca;display:flex;align-items:center;gap:10px}.live-dot{width:5px;height:5px;display:inline-block;border-radius:50%;background:var(--jade);box-shadow:0 0 9px #8cdbce40;flex-shrink:0}.top-divider{opacity:.35;margin:0 9px}.header-actions{display:flex;gap:13px}.icon-button{width:35px;height:35px;display:grid;place-items:center;color:#b6c6cd;border:1px solid transparent;border-radius:50%;font-size:20px}.icon-button:hover{background:#8cdbce10;border-color:#8cdbce40}.icon-button[aria-pressed=true]{color:var(--jade);background:#8cdbce16}.editorial{position:absolute;top:164px;left:49px;z-index:2;pointer-events:none}.eyebrow{font-size:10px;letter-spacing:3px;color:var(--jade);display:flex;gap:13px;align-items:center}.eyebrow i{height:1px;width:27px;background:var(--jade);opacity:.5}h1{font-family:var(--serif);font-size:76px;font-weight:400;line-height:1.22;letter-spacing:.16em;margin:22px 0 20px;text-shadow:0 2px 30px #03101955}h1>span{display:block;padding-left:37px}.title-period{color:var(--ember);font-size:40px;margin-left:-14px}.english-title{font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:4.7px;line-height:1.8;color:#abc0c9}.intro{font-size:12px;line-height:2;letter-spacing:1.4px;color:#a8b9bf;margin:22px 0}.edition{width:216px;border-top:1px solid #9ac1ca29;padding-top:15px;display:flex;justify-content:space-between;font:8px var(--mono);letter-spacing:1.5px;color:#78919b}.edition span:first-child{font-family:var(--sans);letter-spacing:2px}.weather-panel{position:absolute;left:49px;bottom:237px;width:228px;z-index:3}.panel-label{display:flex;gap:8px;align-items:center;font-size:10px;color:#bbccce}.panel-label svg{width:16px;height:16px;color:var(--jade)}#weather-status{margin-left:auto;font:9px var(--mono);color:var(--muted)}.segmented{margin-top:14px;display:flex;padding:4px;background:#0e1c27b3;border:1px solid #7eaaaa24;border-radius:5px;gap:2px}.segmented button{font-size:11px;letter-spacing:2px;flex:1;padding:9px 0;border-radius:3px;color:var(--muted)}.segmented .selected{color:#d6f3ed;background:#7cccbf25;box-shadow:inset 0 0 0 1px #8cdbce25}.weather-note{display:flex;gap:8px;align-items:center;margin-top:12px;font-size:9px;letter-spacing:1px;color:#758e98}.weather-note .live-dot{width:3px;height:3px;background:#729c99}.altitude{position:absolute;right:47px;top:36%;z-index:2;text-align:right}.micro{font:8px var(--mono);letter-spacing:2px;color:var(--muted)}.altitude>.micro{writing-mode:vertical-rl;position:absolute;right:-12px;top:0}.altitude-scale{height:167px;width:36px;position:relative;margin:14px 8px 12px 0;background:repeating-linear-gradient(to bottom,transparent 0 9px,#78919b45 9px 10px);background-size:5px 100%;background-repeat:no-repeat;background-position:right}.alt-mark{position:absolute;right:0;font:9px var(--mono);color:#8da5af;background:var(--ink);white-space:nowrap}.a48{top:0}.a19{top:98px}.a09{top:131px}.a00{bottom:0}#alt-indicator{position:absolute;right:-6px;bottom:0;width:4px;height:7px;background:var(--jade);box-shadow:0 0 10px #8cdbce66;transition:bottom .2s}#altitude-value{font:22px var(--mono);font-weight:400;color:#c3d9d9}#altitude-value span{font-size:10px;margin-left:5px;color:var(--muted)}.scene-caption{position:absolute;right:128px;top:139px;display:flex;align-items:center;gap:12px;z-index:2;font-size:11px;letter-spacing:2px;color:#c4d4d5}.caption-line{width:19px;height:1px;background:var(--jade)}.caption-en{font:8px var(--mono);letter-spacing:1.5px;color:#728e9a}.view-tools{position:absolute;right:43px;bottom:236px;display:flex;flex-direction:column;gap:5px;z-index:3}.view-tools .icon-button{background:#0b1825a6;border-color:#53778527;width:31px;height:31px}.view-tools svg{width:14px;height:14px}.experience-controls{position:absolute;left:49px;bottom:78px;z-index:3;width:255px}.primary-button{width:100%;display:flex;align-items:center;gap:14px;background:var(--jade);color:#092b2c;padding:15px 18px;border:1px solid #b7fff014;border-radius:4px;text-align:left;font-size:13px;letter-spacing:1px}.primary-button:hover{background:#b1eee2;color:#092b2c}.primary-button svg{width:20px;height:20px}.primary-button small{display:block;margin-top:5px;letter-spacing:1.4px;font-size:8px;color:#245554}.button-arrow{margin-left:auto;font-size:21px;align-self:flex-start}.primary-button[aria-pressed=true]{background:#325b5b;color:#d5efe8}.secondary-actions{display:flex;justify-content:space-between;margin-top:17px}.secondary-actions button{font-size:10px;display:flex;gap:5px;align-items:center;white-space:nowrap;color:#98aeb7}.secondary-actions button:hover,.secondary-actions button[aria-pressed=true]{color:var(--jade)}.secondary-actions svg{width:14px;height:14px}.districts{position:absolute;left:355px;right:108px;bottom:81px;z-index:3}.district-heading{display:flex;justify-content:space-between;font-size:9px;letter-spacing:2px;color:#a7bec5;margin-bottom:15px}.district-heading .micro{font-size:8px}.district-heading .micro span{margin-left:18px;color:var(--jade)}.district-track{display:grid;grid-template-columns:repeat(4,1fr);background:linear-gradient(110deg,#112633cc,#101c2ab3);border:1px solid #859ca52b;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-radius:6px;overflow:hidden}.district{position:relative;height:96px;text-align:left;padding:17px 20px;border-right:1px solid #7f9da024;color:#bfd0d3}.district:last-child{border-right:0}.district:hover,.district.active{background:#7cd2c011;color:#ddfff6}.district.active:after{content:"";position:absolute;bottom:0;left:18px;right:18px;height:2px;background:var(--jade)}.district-no{font:9px var(--mono);color:#72909d;position:absolute;right:15px;top:18px}.district-name{font-family:var(--serif);font-size:18px;letter-spacing:2px;display:block}.district-name small{display:block;font:7px var(--mono);letter-spacing:1.1px;color:#809aa5;margin-top:8px}.district-level{display:block;font-size:8px;letter-spacing:1px;color:#91aab3;margin-top:10px}.district-arrow{position:absolute;right:16px;bottom:18px;color:#91b9b8;font-size:14px}footer{position:absolute;bottom:0;left:46px;right:46px;height:47px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid #90aab51b;z-index:3;font-size:8px;color:#78929e;letter-spacing:1.2px}.footer-left{display:flex;gap:8px;align-items:center}.footer-left .live-dot{width:3px;height:3px}.hint{color:#7f98a4}.hint b{margin:0 15px;opacity:.4}#quality{font-size:8px;letter-spacing:1px;padding:8px 0 8px 18px}#quality span{color:#bdd1d3;padding-left:9px}.journey-status{position:absolute;top:135px;left:50%;transform:translate(-50%);z-index:4;display:flex;align-items:center;gap:12px;background:#0d202deb;border:1px solid #7dadad44;border-radius:5px;padding:13px 18px;min-width:320px;font-size:11px;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}#stop-journey{color:#b8cecf;margin-left:auto;font-size:10px;padding-left:16px}.journey-progress{position:absolute;bottom:0;left:0;right:0;height:2px;background:#7baaa515}.journey-progress i{height:2px;background:var(--jade);display:block;width:0}.toast{position:absolute;bottom:212px;left:55%;transform:translate(-50%,8px);background:#10252eee;border:1px solid #79a8a944;border-radius:5px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:13px 19px;font-size:11px;letter-spacing:1px;opacity:0;pointer-events:none;z-index:12;transition:opacity .25s,transform .25s}.toast.visible{opacity:1;transform:translate(-50%)}.loading{position:absolute;inset:0;background:#080f19;display:flex;align-items:center;justify-content:center;flex-direction:column;z-index:50;transition:opacity 1s;gap:16px}.loading.loaded{opacity:0;pointer-events:none}.loading-seal{font:48px var(--serif);color:var(--jade);border:1px solid #8cdbce44;padding:12px 15px;border-radius:6px;margin-bottom:12px}.loading h2{font:23px var(--serif);letter-spacing:4px;margin:5px}.loading p{font-size:11px;color:var(--muted);letter-spacing:1px}.load-track{width:190px;height:2px;background:#8cdbce20;margin:8px 0 18px}.load-track i{display:block;height:2px;width:2%;background:var(--jade);transition:width .4s}#retry{background:#8cdbce20;border:1px solid var(--jade);padding:10px 22px}dialog{background:#101d2bf5;-webkit-backdrop-filter:blur(30px);backdrop-filter:blur(30px);color:var(--ivory);border:1px solid #95b8bc44;border-radius:8px;width:min(650px,90vw);max-height:85vh;padding:40px;box-shadow:0 30px 100px #0006}dialog::backdrop{background:#02070dcc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}dialog h2{font:30px var(--serif);letter-spacing:2px}dialog>p{font-size:12px;color:var(--muted)}.dialog-close{position:absolute;right:20px;top:15px;font-size:25px;color:var(--muted)}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 30px;margin:30px 0}.help-grid b{font-size:12px;font-weight:400;color:var(--jade)}.help-grid p{font-size:11px;line-height:1.9;color:#a1b5be}.about-line{border-top:1px solid var(--border);padding-top:20px;font:9px var(--mono);color:var(--jade)}.about-line span{display:block;font:10px var(--sans);margin-top:9px;color:var(--muted)}.dialog-done{width:auto;float:right;margin-top:25px;font-size:11px;padding:12px 20px}.immersive .editorial,.immersive .weather-panel{opacity:0;pointer-events:none}.immersive .vignette{background:linear-gradient(0deg,#06101ed9,transparent 30%,transparent 90%,#06101e66)}.ui-hidden #app>:not(#viewport):not(#loading):not(#toast):not(#gallery-toggle):not(#gallery-signature){visibility:hidden}#touch-move{position:absolute;right:85px;bottom:210px;z-index:4;grid-template-columns:repeat(3,38px);gap:4px}#touch-move button{background:#173441b3;border:1px solid #8cdbce44;border-radius:5px;width:38px;height:38px}#touch-move button:first-child{grid-column:2}#touch-move button:nth-child(2){grid-column:1}.immersive #touch-move{display:grid}@media(min-height:950px){.editorial{top:195px}.weather-panel{bottom:265px}.districts{bottom:96px}.experience-controls{bottom:92px}}@media(max-height:760px)and (min-width:901px){.topbar{height:85px}.editorial{top:120px}h1{font-size:58px;margin:15px 0}.intro{margin:14px 0;font-size:11px}.edition{display:none}.weather-panel{bottom:213px}.scene-caption{top:116px}.district{height:87px}.districts{bottom:73px}.experience-controls{bottom:70px}}@media(max-width:1150px){.topbar{margin:0 30px}.editorial,.weather-panel,.experience-controls{left:32px}h1{font-size:63px}.districts{left:310px;right:82px}.district{padding:16px 12px}.district-name{font-size:15px}.district-name small{font-size:6px;letter-spacing:.5px}.district-no,.district-arrow{right:10px}.top-center{font-size:9px}.experience-controls{width:236px}.altitude{right:26px}.view-tools{right:22px}footer{left:30px;right:30px}.hint{letter-spacing:.5px}.hint b{margin:0 6px}}@media(max-width:900px){.topbar{height:83px;margin:0 25px}.top-center{display:none}.editorial{top:117px;left:27px}h1{font-size:47px;margin-top:16px}h1>span{padding-left:25px}.title-period{font-size:25px}.english-title{font-size:8px;letter-spacing:2px}.intro{font-size:10px;line-height:1.9;margin:16px 0}.edition{display:none}.weather-panel{left:27px;bottom:242px;width:180px}.districts{left:27px;right:27px;bottom:68px}.district-heading{margin-bottom:10px}.district{height:88px}.experience-controls{left:27px;bottom:177px;width:calc(100% - 100px);display:flex;align-items:center;gap:18px}.primary-button{width:190px;padding:10px 13px;font-size:11px}.primary-button small{font-size:7px}.secondary-actions{flex:1;justify-content:flex-start;gap:18px;margin:0}.secondary-actions button{font-size:10px}.button-arrow{font-size:18px}.scene-caption{top:113px;right:30px}.caption-en{display:none}.altitude{top:35%;right:27px}.view-tools{right:25px;bottom:260px}.view-tools .icon-button{width:29px;height:29px}footer{height:42px;left:27px;right:27px}.hint{font-size:7px}.footer-left{display:none}.toast{bottom:245px;left:50%;white-space:nowrap}.journey-status{top:103px}.vignette{background:linear-gradient(90deg,#06101ec7,transparent 50%),linear-gradient(0deg,#06101e,transparent 45%,transparent 90%,#06101e88)}#touch-move{bottom:245px;right:72px}}@media(max-width:560px){.brand{font-size:15px;gap:10px}.seal{width:31px;height:35px;font-size:23px}.brand small{font-size:6px;letter-spacing:1.4px}.header-actions{gap:3px}.icon-button{width:31px;height:31px}.topbar{margin:0 20px}.editorial{top:107px;left:23px}.eyebrow{font-size:8px;letter-spacing:1px}h1{font-size:39px;line-height:1.2;letter-spacing:.18em;margin:13px 0}.intro,.english-title{display:none}.weather-panel{left:24px;bottom:235px;width:146px}.panel-label{font-size:8px;gap:5px}#weather-status{font-size:7px}.segmented{margin-top:8px}.segmented button{font-size:9px;padding:7px 0}.weather-note{display:none}.scene-caption{top:111px;right:23px;font-size:9px;letter-spacing:1px}.caption-line{width:10px}.altitude{right:25px;top:29%;transform:scale(.85);transform-origin:top right}.view-tools{flex-direction:row;bottom:237px;right:23px;gap:1px}.view-tools .icon-button{width:26px;height:26px;font-size:17px}.view-tools #rotate-left,.view-tools #rotate-right{display:none}.experience-controls{left:24px;right:24px;width:auto;bottom:166px;gap:9px}.primary-button{width:151px;gap:8px;font-size:10px;padding:10px}.primary-button small{font-size:6px;letter-spacing:1px}.primary-button svg{width:15px;height:15px}.secondary-actions{gap:10px;justify-content:space-around}.secondary-actions button{font-size:8px;flex-direction:column;gap:6px}.secondary-actions svg{width:16px;height:16px}.districts{left:24px;right:24px;bottom:52px}.district-heading{font-size:8px;margin-bottom:8px}.district-heading .micro{font-size:6px;letter-spacing:1px}.district{height:82px;padding:14px 7px}.district-name{font-size:12px;letter-spacing:.5px}.district-name small{font-size:5px;letter-spacing:0;margin-top:8px;white-space:nowrap}.district-no{display:none}.district-arrow{right:8px;bottom:10px;font-size:9px}.district-level{font-size:6px;letter-spacing:0;margin-top:12px}.district.active:after{left:7px;right:7px}footer{left:24px;right:24px;height:34px;font-size:6px;letter-spacing:.5px}.hint{font-size:6px}.hint b{margin:0 2px}#quality{font-size:7px;padding-left:6px}#quality span{padding-left:4px}.toast{bottom:220px;font-size:9px;padding:11px;white-space:normal;width:80%;text-align:center}.journey-status{top:92px;min-width:280px;font-size:9px;padding:10px 12px}.help-grid{grid-template-columns:1fr;gap:10px;margin:22px 0}dialog{padding:29px}dialog h2{font-size:23px}.about-line{line-height:1.7}#touch-move{bottom:280px;right:25px}.vignette{background:linear-gradient(0deg,#06101e 8%,transparent 46%),linear-gradient(90deg,#06101e44,transparent 65%)}.immersive .scene-caption{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}#interact{white-space:nowrap;padding:6px 9px;background:#8cdbce25;color:var(--jade);font-size:10px;border:1px solid #8cdbce44;border-radius:3px}.loading.loaded{visibility:hidden}.weather-panel{z-index:7}.weather-panel summary{display:flex;align-items:center;gap:8px;cursor:pointer;list-style:none;min-height:40px;padding:10px 12px;background:var(--surface,#101d2b);border:1px solid var(--border,#304551);border-radius:5px;font-size:10px;color:var(--ivory,#e5ebea)}.weather-panel summary::-webkit-details-marker{display:none}.weather-panel summary:focus-visible,.climate-body input:focus-visible{outline:2px solid var(--jade);outline-offset:4px}#climate-summary{margin-left:auto;color:var(--jade);font:9px var(--mono);white-space:nowrap}.climate-chevron{color:var(--muted)}.weather-panel[open] .climate-chevron{transform:rotate(180deg)}.daylight #gallery-signature span{color:var(--ink)}.daylight #gallery-signature small{color:var(--surface,#101d2b)}.climate-body{position:absolute;bottom:calc(100% + 10px);left:0;width:264px;max-width:calc(100vw - 48px);padding:18px;background:var(--surface,#101d2b);border:1px solid var(--border,#304551);border-radius:6px;box-shadow:0 12px 40px #0005}.clock-heading{display:flex;justify-content:space-between;align-items:center}.clock-heading label{font-size:11px}.clock-heading label span{margin-left:7px;color:var(--muted);font-size:9px}#city-clock{font:23px var(--mono);letter-spacing:1px;color:var(--jade)}#city-time{display:block;width:100%;height:24px;margin:10px 0 0;accent-color:var(--jade);cursor:pointer}.clock-ticks{display:flex;justify-content:space-between;color:var(--muted);font:8px var(--mono)}.cycle-actions{display:flex;justify-content:space-between;align-items:center;padding:8px 0 13px;margin-bottom:14px;border-bottom:1px solid var(--border,#304551);font-size:9px;color:var(--muted)}#cycle-toggle,#weather-auto{min-height:32px;padding:6px 8px;border:1px solid var(--border,#304551);border-radius:3px;font-size:10px;color:var(--ivory,#e5ebea)}#weather-auto{margin-left:auto}#weather-auto.selected{color:var(--jade);background:#8cdbce16;border-color:#8cdbce50}.climate-body #weather-status{font:9px var(--sans);white-space:nowrap}.climate-body .panel-label{flex-wrap:wrap}.climate-body .segmented{margin-top:9px}.climate-body .segmented button{min-height:36px;font-size:11px;letter-spacing:1px}.climate-body .weather-note{display:flex;font-size:9px;letter-spacing:0;min-height:15px}@media(max-width:560px){.weather-panel{width:calc(100% - 132px)}.weather-panel summary{padding:9px;gap:5px;font-size:9px}#climate-summary{font-size:8px}.climate-body{padding:15px}.climate-body #weather-status{font-size:9px}}@media(max-height:600px){.climate-body{top:calc(100% + 8px);bottom:auto;max-height:calc(100dvh - 138px);overflow-y:auto;scrollbar-color:var(--muted) var(--ink);scrollbar-width:thin}}@media(max-height:600px)and (min-width:901px){.weather-panel{top:98px;bottom:auto}.climate-body{max-height:calc(100dvh - 158px)}}@media(max-height:600px)and (max-width:900px){.topbar{height:62px}.editorial,.altitude,.scene-caption{display:none}.weather-panel{top:78px;bottom:auto;width:147px}.weather-note,.district-heading{display:none}.districts{bottom:43px}.district{height:65px;padding-top:12px}.district-name small{margin-top:6px}.district-level{margin-top:7px}.experience-controls{bottom:127px}.view-tools{bottom:195px}.journey-status{top:76px}.toast{bottom:183px}.vignette{background:linear-gradient(0deg,#06101e 8%,transparent 55%)}#touch-move{bottom:197px}.primary-button small{display:none}.primary-button{padding:12px}.header-actions{gap:1px}.topbar .brand small{display:none}}#gallery-toggle{position:absolute;top:120px;left:49px;z-index:6;font:9px var(--mono);letter-spacing:1px;color:#a6bfc8;padding:7px 10px;border:1px solid #8cdbce30;border-radius:3px;background:#0e1b2b88}.ui-hidden #gallery-toggle{top:auto;bottom:22px;left:24px;background:#0b1724aa;opacity:.7}#gallery-toggle:hover{opacity:1;color:var(--jade)}@media(max-width:900px){#gallery-toggle{top:85px;left:26px;font-size:8px}}@media(max-height:600px){#gallery-toggle{top:72px;left:auto;right:22px}}#gallery-signature{display:none;position:absolute;bottom:28px;left:32px;z-index:5;pointer-events:none}.ui-hidden #gallery-signature{display:block}#gallery-signature span{font:19px var(--serif);letter-spacing:5px;color:#cbd9e1}#gallery-signature small{display:block;margin-top:10px;font:8px var(--mono);letter-spacing:2px;color:#718795}.ui-hidden #gallery-toggle{left:auto;right:32px;bottom:30px;padding:13px 20px;font-size:11px;color:#b8d4da;opacity:1;letter-spacing:2px;background:#12243288;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@media(max-width:560px){#gallery-signature{left:20px;bottom:27px}#gallery-signature span{font-size:16px;letter-spacing:3px}#gallery-signature small{font-size:6px;letter-spacing:1px}.ui-hidden #gallery-toggle{right:20px;bottom:25px;padding:12px 15px;font-size:10px}}@media(max-width:560px){body:not(.ui-hidden) #gallery-toggle{top:151px;left:auto;right:24px}}@media(max-height:600px){body:not(.ui-hidden) #gallery-toggle{top:72px;left:auto;right:22px}}
