@font-face{font-family:AtlasSerif;src:local("Noto Serif SC"),local("Source Han Serif SC"),local("STSong"),local("SimSun");font-display:swap}
:root{color-scheme:dark;--ink:#050b13;--white:#e9f2f4;--muted:#8295a6;--cyan:#9be6e6;--line:rgba(154,198,217,.18);--mono:"Cascadia Code","SFMono-Regular",Consolas,monospace}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{background:var(--ink);color:var(--white);font:14px/1.5 "Segoe UI","Microsoft YaHei",sans-serif}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button{border:0;background:none}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid var(--cyan);outline-offset:5px}[hidden]{display:none!important}#universe{position:fixed;inset:0;width:100%;height:100%;touch-action:none;outline:none;cursor:grab}#universe.dragging{cursor:grabbing}.space-haze{position:fixed;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(5,11,19,.9),transparent 42%),linear-gradient(0deg,#050b13 0%,transparent 23%)}
.masthead{position:absolute;z-index:4;top:0;left:0;right:0;height:108px;display:flex;align-items:center;justify-content:space-between;margin:0 4%;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:13px}.brand img{width:36px;height:44px}.brand>span{font-size:17px;letter-spacing:3px;font-weight:650}.brand small{display:block;font:8px/1.8 var(--mono);letter-spacing:1.55px;color:var(--muted)}.brand-url{display:block;font:9px/1.8 var(--mono);letter-spacing:.6px;color:var(--cyan)}.world-tabs{display:flex;gap:6px;padding:5px;border:1px solid var(--line);border-radius:40px;background:rgba(9,20,31,.65)}.world-tabs button{display:flex;gap:9px;align-items:center;padding:10px 18px;border-radius:25px;font-size:12px;transition:background .2s,color .2s}.world-tabs button[aria-pressed=true]{background:#21313e;color:#d5ffff;box-shadow:inset 0 0 0 1px #65888c40}.tab-en{font:8px var(--mono);letter-spacing:1px;color:var(--muted)}.planet-icon{width:12px;height:12px;border:1px solid currentColor;border-radius:50%;display:block;box-shadow:inset -4px -2px #162a38}.earth-icon{background:#4c98ae}.moon-icon{background:#969eaa}.orbit-icon{font-size:22px;line-height:12px}.directory-toggle{display:flex;gap:20px;align-items:center;letter-spacing:2px;font-size:12px;padding:12px 0 12px 20px}.grid-icon{font-size:23px;color:var(--cyan)}
.intro{position:absolute;z-index:2;left:5.8%;top:26%;pointer-events:none}.intro button{pointer-events:auto}.eyebrow{font:10px/1.5 var(--mono);letter-spacing:2.3px;color:var(--cyan);display:flex;align-items:center;gap:12px;margin:0 0 25px}.eyebrow i{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}h1{font-family:AtlasSerif,"Songti SC",serif;font-size:clamp(30px,3.4vw,57px);font-weight:400;line-height:1.55;letter-spacing:3px;margin:0 0 23px}h1 em{font-size:.78em;font-style:normal;display:block;color:#b5e3e3}.intro-description{font-size:12px;line-height:2.1;color:#91a2b1;letter-spacing:1px;margin:0 0 28px}.explore-button{border-bottom:1px solid #78999b;display:flex;gap:45px;align-items:center;font-size:12px;padding:10px 0;letter-spacing:2px}.explore-button span{font-size:20px;color:var(--cyan)}.explore-button:hover{color:var(--cyan);border-color:var(--cyan)}.intro-coordinate{margin-top:30px;color:#617789;display:flex;flex-direction:column;gap:6px}.intro-coordinate span{font:9px var(--mono);letter-spacing:1px}.intro-coordinate small{font-size:10px;letter-spacing:1px}
#labels{position:fixed;inset:0;pointer-events:none;z-index:2}.place-label{position:absolute;left:0;top:0;pointer-events:auto;white-space:nowrap;text-align:left;padding:5px 10px 5px 18px;background:linear-gradient(90deg,rgba(6,18,28,.88),rgba(6,18,28,.08));border-left:1px solid #84b8c5;font-size:12px;letter-spacing:1px;transition:opacity .2s,color .2s;transform-origin:0 50%;filter:drop-shadow(0 2px 3px #050b13)}.place-label:before{position:absolute;content:"";left:-22px;width:21px;height:1px;top:50%;background:#84b8c5}.place-label small{display:block;font:8px/1.7 var(--mono);letter-spacing:1.4px;color:#9cacb9}.place-label:hover,.place-label.is-hovered{color:#b5ffff;border-color:#c6ffff;background:#0a2334}.place-label .label-arrow{margin-left:14px;color:var(--cyan)}
.scene-tools{position:absolute;z-index:3;right:4%;bottom:200px;display:flex;flex-direction:column;gap:5px}.tool-button{width:37px;height:37px;border:1px solid var(--line);background:#0a172199;backdrop-filter:blur(8px);border-radius:50%;font-size:20px;display:grid;place-items:center}.tool-button:hover{border-color:#7ca3ad;background:#213640}.tool-button[aria-pressed=true]{color:var(--cyan)}.exploration-hint{position:absolute;bottom:172px;left:50%;transform:translateX(-25%);display:flex;gap:12px;align-items:center;color:#7f9aaa;white-space:nowrap;font-size:10px;letter-spacing:1px;pointer-events:none}.drag-icon{font-size:22px;color:#afd0d8}.exploration-hint b{margin:0 10px;font-weight:400;color:#45616f}.mobile-hint{display:none}.destination-dock{position:absolute;left:4%;right:4%;bottom:54px;display:flex;align-items:stretch;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(90deg,#0c1923e0,#07111ce0);backdrop-filter:blur(20px);height:93px;z-index:3}.dock-title{width:155px;flex-shrink:0;display:flex;flex-direction:column;justify-content:center;gap:7px;padding:0 25px}.dock-title>span{font-size:13px;letter-spacing:2px}.dock-title small{font:7px var(--mono);color:var(--muted);letter-spacing:1px}#featured-destinations{display:flex;flex:1;min-width:0}.destination-card{text-align:left;flex:1;min-width:0;padding:16px 20px;border-left:1px solid var(--line);transition:background .2s}.destination-card:hover{background:#1b34404f}.destination-card small{font:8px var(--mono);color:#7c9fae;display:block;letter-spacing:1px}.destination-card strong{font-size:14px;font-weight:400;letter-spacing:2px;display:block;margin:7px 0 3px}.destination-card .card-location{font-size:9px;color:var(--muted)}.destination-card .card-arrow{float:right;font-size:16px;color:var(--cyan)}.all-destinations{font-size:11px;letter-spacing:1px;padding:0 24px;border-left:1px solid var(--line);white-space:nowrap}.all-destinations span{margin-left:18px;color:var(--cyan);font-size:18px}footer{position:absolute;bottom:17px;left:4%;right:4%;display:flex;justify-content:space-between;align-items:center;font:8px var(--mono);letter-spacing:1px;color:#658093;z-index:3}footer>span:nth-child(2){font:9px "Microsoft YaHei",sans-serif;letter-spacing:2px}footer i{display:inline-block;margin-left:12px;width:4px;height:4px;background:var(--cyan);border-radius:50%}footer button{font-size:9px;color:#7893a4;padding:6px}
.directory{position:absolute;z-index:6;right:4%;top:120px;bottom:165px;width:min(430px,92vw);background:rgba(6,17,28,.97);backdrop-filter:blur(25px);border:1px solid #3f606a;box-shadow:0 30px 80px #0009;display:flex;flex-direction:column;padding:24px}.directory-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:20px}.directory-head small{font:8px var(--mono);letter-spacing:2px;color:var(--cyan)}.directory h2{margin:10px 0 0;font-size:21px;font-weight:400;letter-spacing:2px}#destination-list{overflow:auto;scrollbar-width:thin;scrollbar-color:#3b5966 transparent;flex:1}.list-heading{font:9px var(--mono);letter-spacing:2px;color:#69848f;padding:20px 0 9px;border-bottom:1px solid var(--line)}.destination-row{width:100%;padding:14px 8px;display:flex;align-items:center;text-align:left;border-bottom:1px solid #18313c;gap:14px}.destination-row:hover{background:#16303d}.destination-row>span:first-child{font:10px var(--mono);color:var(--cyan);width:20px}.destination-row strong{font-size:13px;letter-spacing:1px;font-weight:400}.destination-row small{display:block;font-size:10px;color:var(--muted);margin-top:4px}.destination-row>span:last-child{margin-left:auto;color:var(--cyan)}.directory-foot{font-size:9px;color:#6e8795;margin:18px 0 0;letter-spacing:1px}
dialog{border:1px solid #668e9c;padding:0;color:var(--white);background:#07121c;box-shadow:0 0 90px #000a;max-width:calc(100vw - 36px);max-height:92dvh;animation:reveal .25s ease-out}dialog::backdrop{background:rgba(0,6,14,.85);backdrop-filter:blur(13px)}#video-dialog{width:min(1120px,88vw,calc(160dvh - 360px));overflow:auto}.video-header{padding:24px 30px 22px;display:flex;justify-content:space-between;align-items:center;background:linear-gradient(100deg,#152934,#07121c)}.video-header .eyebrow{font-size:10px;margin-bottom:10px;letter-spacing:1.8px}.video-header h2{font-size:25px;font-weight:400;letter-spacing:4px;margin:0 0 5px}.video-header small{font:9px var(--mono);letter-spacing:2px;color:#8da9b8}.icon-button{width:44px;height:44px;display:grid;place-items:center;font-size:29px;border:1px solid #49636d;flex-shrink:0}.icon-button:hover{background:#1f3d49;color:var(--cyan)}.video-stage{position:relative;aspect-ratio:16/9;background:#02070c;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}video{width:100%;height:100%;object-fit:contain}.video-caption{display:flex;align-items:center;justify-content:space-between;padding:18px 30px;gap:22px}.video-caption p{font-size:11px;line-height:1.8;letter-spacing:.5px;margin:0;color:#9eb2bd}.video-caption>span{font:8px var(--mono);letter-spacing:1px;color:#6e929d;flex-shrink:0}.sound-toggle,#video-retry{position:absolute;bottom:18px;right:20px;background:#07121cce;border:1px solid #6b8992;padding:8px 14px;font-size:11px}#video-retry{bottom:50%;right:50%;transform:translate(50%,50%);padding:18px 25px}
#signal-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(ellipse at 50% 42%,color-mix(in srgb,var(--signal-color,#8bdfed) 12%,#04101a),#02070c 70%);overflow:hidden}.signal-orbits{position:relative;width:120px;height:120px;display:grid;place-items:center;margin-bottom:28px}.signal-orbits i{position:absolute;inset:0;border:1px solid #79d8e180;border-radius:50%;transform:rotateX(60deg) rotateZ(0deg);animation:signalRotate 12s linear infinite}.signal-orbits i:nth-child(2){transform:rotateY(65deg) rotateX(30deg);animation-direction:reverse;animation-duration:17s}.signal-orbits i:nth-child(3){inset:20px;transform:rotateY(40deg);animation-duration:23s}.signal-orbits span{font-size:46px;color:var(--signal-color,#9be6e6);text-shadow:0 0 35px #86e0ed77}.signal-overline{font:8px var(--mono);letter-spacing:4px;color:#6d9ead;z-index:1}#signal-placeholder h3{font-size:27px;font-weight:400;letter-spacing:8px;margin:15px 0 10px;z-index:1}#signal-placeholder p{font-size:12px;color:#9ab4c0;letter-spacing:3px;z-index:1}#signal-placeholder small{font-size:9px;letter-spacing:2px;color:#587c8d;margin-top:20px;z-index:1}.signal-horizon{position:absolute;width:140%;height:75%;bottom:-60%;border:1px solid #4e959c;border-radius:50%;box-shadow:0 -10px 80px #5aa7b21a;animation:horizon 8s ease-in-out infinite}#credits-dialog{width:540px;padding:36px}#credits-dialog>.icon-button{position:absolute;right:18px;top:18px}#credits-dialog h2{font-size:24px;font-weight:400}#credits-dialog p:not(.eyebrow){font-size:13px;color:#9db1bf;line-height:2}#credits-dialog a{color:var(--cyan)}
#loading{position:fixed;z-index:10;inset:0;background:#050b13;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:opacity .5s;pointer-events:none}#loading.done{opacity:0}.loading-orbit{width:55px;height:55px;border:1px solid #33545d;border-top-color:#b9f2f3;border-radius:50%;animation:orbit 1.4s linear infinite}#loading p{letter-spacing:5px;font-size:15px;margin-top:24px}#loading small{font:8px var(--mono);letter-spacing:3px;color:#577f8d}#scene-error{position:absolute;z-index:5;top:50%;left:50%;transform:translate(-50%,-50%);background:#07121cef;padding:25px;max-width:80vw;border:1px solid #49636d}.noscript{position:fixed;z-index:20;inset:40% 10%;background:#07121c;padding:40px;text-align:center}body.modal-open .masthead{pointer-events:none}
@keyframes reveal{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@keyframes orbit{to{transform:rotate(360deg)}}@keyframes signalRotate{to{transform:rotateX(65deg) rotateY(30deg) rotateZ(360deg)}}@keyframes horizon{50%{transform:scale(1.1)}}
@media(min-width:1700px){.intro{left:7%}.destination-dock{left:7%;right:7%}.masthead{margin:0 5%}}
@media(max-width:1100px){.intro{left:4.5%;top:28%}h1{font-size:33px;letter-spacing:2px}.intro-description{font-size:11px}.masthead{height:92px}.brand>span{font-size:15px}.world-tabs button{padding:9px 12px}.tab-en{display:none}.dock-title{width:125px;padding:0 17px}.destination-card{padding:17px 13px}.all-destinations{padding:0 15px}.all-destinations span{margin-left:7px}.intro-coordinate{margin-top:23px}.destination-card strong{font-size:12px}.destination-card:nth-child(4){display:none}}
@media(max-width:700px){.masthead{height:79px;margin:0 5%;gap:10px}.brand{gap:9px}.brand img{width:26px;height:33px}.brand>span{font-size:13px;letter-spacing:1.5px}.brand small{font-size:6px;letter-spacing:1px}.brand-url{font-size:8px}.directory-toggle{padding:10px;gap:6px;font-size:11px;letter-spacing:0}.directory-toggle .grid-icon{font-size:22px}.world-tabs{position:fixed;top:94px;right:5%;padding:3px;gap:0;background:#0c1723bb;z-index:4}.world-tabs button{font-size:10px;gap:6px;padding:7px 10px}.planet-icon{width:9px;height:9px}.orbit-icon{font-size:17px}.space-haze{background:linear-gradient(0deg,#050b13 0%,transparent 30%,transparent 73%,#050b1355)}.intro{left:6%;top:151px}.intro .eyebrow{font-size:8px;letter-spacing:1.7px;margin-bottom:12px}.intro .eyebrow i{display:none}h1{font-size:25px;line-height:1.55;letter-spacing:2px;margin:0}h1 br{display:none}h1 em{display:inline}.intro-description{font-size:10px;line-height:1.8;letter-spacing:.5px;margin:10px 0}.intro-description br{display:none}.explore-button{font-size:10px;gap:20px;padding:4px 0}.explore-button span{font-size:16px}.intro-coordinate{display:none}.scene-tools{right:5%;bottom:230px;gap:6px}.tool-button{width:33px;height:33px;font-size:17px}.exploration-hint{bottom:192px;left:50%;transform:translateX(-50%);font-size:9px;gap:8px;letter-spacing:.3px}.desktop-hint{display:none}.mobile-hint{display:inline}.exploration-hint b{margin:0 5px}.drag-icon{font-size:19px}.destination-dock{height:143px;bottom:35px;left:5%;right:5%;display:block;background:#0b1823cc}.dock-title{padding:11px 14px;flex-direction:row;align-items:center;justify-content:space-between;width:100%;gap:15px}.dock-title>span{font-size:10px;letter-spacing:2px}.dock-title small{font-size:6px}#featured-destinations{height:98px;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x mandatory;padding:0 0 8px}.destination-card{min-width:135px;flex:0 0 40%;scroll-snap-align:start;padding:10px 15px}.destination-card:nth-child(4){display:block}.destination-card:first-child{border-left:0}.destination-card strong{font-size:13px;margin:5px 0}.destination-card small{font-size:7px}.all-destinations{display:none}footer{bottom:9px;left:5%;right:5%;font-size:6px;letter-spacing:.3px}footer>span:nth-child(2){display:none}footer button{font-size:8px}.place-label{font-size:10px;padding:4px 7px 4px 10px;letter-spacing:.5px}.place-label small{font-size:6px}.place-label:before{left:-13px;width:12px}.place-label .label-arrow{margin-left:6px}.directory{top:88px;bottom:40px;right:5%;width:90%;padding:20px}.directory-head{margin-bottom:8px}.directory h2{font-size:20px}.video-header{padding:20px}.video-header h2{font-size:21px;letter-spacing:3px}.video-header .eyebrow{font-size:8px;letter-spacing:.7px;margin-bottom:8px}.video-header small{font-size:7px}.icon-button{width:38px;height:38px}.video-stage{aspect-ratio:4/3}#video-dialog{width:94vw;max-width:94vw}.video-caption{display:block;padding:17px 20px}.video-caption p{font-size:10px}.video-caption>span{display:block;margin-top:12px;font-size:7px}.signal-orbits{width:75px;height:75px;margin-bottom:16px}.signal-orbits span{font-size:30px}.signal-overline{font-size:6px;letter-spacing:2px}#signal-placeholder h3{font-size:21px;letter-spacing:4px;margin:10px 0 3px}#signal-placeholder p{font-size:10px;letter-spacing:1px}#signal-placeholder small{font-size:8px;margin-top:13px}.signal-horizon{bottom:-64%}#credits-dialog{padding:28px;max-width:90vw}#credits-dialog h2{font-size:21px}}
@media(max-height:650px) and (min-width:701px){.masthead{height:75px}.intro{top:23%}h1{font-size:30px;line-height:1.3}.eyebrow{margin-bottom:16px}.intro-description{margin-bottom:10px}.intro-coordinate{display:none}.destination-dock{height:75px;bottom:35px}.exploration-hint{bottom:125px}.scene-tools{bottom:140px}footer{bottom:9px}.directory{top:88px;bottom:125px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}

.place-label.label-left{border-left:0;border-right:1px solid #84b8c5;background:linear-gradient(270deg,rgba(6,18,28,.88),rgba(6,18,28,.08))}.place-label.label-left:before{left:auto;right:-22px}.place-label.label-left{transform-origin:100% 50%}
@media(max-width:700px){.place-label.label-left:before{right:-13px}.tool-button{width:38px;height:38px}.scene-tools{bottom:224px}.intro h1 em{font-size:inherit}}
@media(max-height:520px) and (min-width:701px){.intro-description,.intro-coordinate{display:none}.intro h1{font-size:25px}.intro .eyebrow{font-size:8px}.intro{top:24%}.explore-button{padding:4px 0}.scene-tools{flex-direction:row;bottom:122px}.masthead{height:65px}.destination-dock{height:70px}}