:root{color-scheme:dark;--gold:#d6be94;--muted:#92999e;--line:#ffffff21}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#070b10;color:#e8e5de;font-family:'Microsoft YaHei','PingFang SC',sans-serif;font-weight:300}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;background:transparent;border:1px solid var(--line);cursor:pointer}button:hover,a:hover{color:var(--gold)}button:focus-visible,a:focus-visible{outline:2px solid var(--gold);outline-offset:6px}#universe,#sky,.shade{position:fixed;inset:0;pointer-events:none}#universe canvas{display:block;width:100%;height:100%}#sky{z-index:1}.shade{z-index:2;background:linear-gradient(90deg,#05090fbd,transparent 65%),linear-gradient(0deg,#05080dbb,transparent 25%)}header{position:relative;z-index:10;padding:35px 4.5%;display:flex;justify-content:space-between;align-items:center}.brand{font-family:serif;font-size:23px;letter-spacing:5px}.brand span{font:8px sans-serif;letter-spacing:3px;display:block;margin-top:9px;color:#a9acac}nav{display:flex;gap:32px;font-size:12px;letter-spacing:2px}nav a{padding:10px 0;border-bottom:1px solid transparent}nav a.active{border-color:var(--gold);color:var(--gold)}#menu{display:none}main{position:relative;z-index:3;min-height:calc(100svh - 174px);outline:none}.hero{padding:13vh 8% 60px;min-height:calc(100svh - 174px);display:flex;flex-direction:column;align-items:flex-start}.eyebrow{font-size:10px;letter-spacing:4px;color:var(--gold);display:flex;gap:16px;align-items:center}.eyebrow:before{content:'';height:1px;width:36px;background:var(--gold)}h1{font-family:'Songti SC','SimSun',serif;font-size:clamp(48px,6.2vw,92px);font-weight:400;letter-spacing:14px;margin:28px 0 20px}.hero .english{font-size:11px;letter-spacing:7px;color:#b7b9ba}.intro{font-size:13px;line-height:2.2;color:#a5abb0;letter-spacing:2px;margin:35px 0}.actions{display:flex;gap:24px;align-items:center}.primary{background:#d8c3a0;color:#17191a;padding:14px 28px;font-size:12px;letter-spacing:3px;border:0;display:inline-flex;gap:32px;align-items:center}.primary:hover{background:#f1ddbb;color:#17191a}.quiet{font-size:11px;color:#adb0b2;border:0;padding:13px}.hint{position:absolute;right:7%;bottom:45px;color:#a1a5a7;font-size:10px;letter-spacing:2px;display:flex;align-items:center;gap:14px}.hint:before{content:'↔';font-size:22px;color:var(--gold)}.hero .index{position:absolute;left:8%;bottom:35px;font-size:9px;letter-spacing:3px;color:#6d7982}.page{padding:9vh 8% 100px;max-width:1250px}.page h1{font-size:48px;letter-spacing:8px;margin:22px 0}.page .description{color:#a0a7ac;line-height:2;letter-spacing:2px;font-size:13px}.list{margin-top:48px;width:min(460px,100%)}.row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:20px 0;gap:24px;font-size:14px}.row small{color:#818b94;font-size:10px}.row .num{font-size:10px;color:var(--gold);margin-right:18px}.row .arrow{color:var(--gold)}.overview .list{width:450px}.row:hover{padding-left:10px;transition:padding .3s}.view-switch{display:flex;gap:12px;margin-top:25px}.view-switch button{padding:8px 13px;font-size:11px}.view-switch button.selected{border-color:var(--gold);color:var(--gold)}.map{position:relative;height:370px;max-width:650px;margin-top:25px;border:1px solid var(--line);background:#070b10b3}.map:before{content:'';position:absolute;inset:65px 60px;border:1px solid #d6be9460;border-radius:50%;transform:rotate(-17deg)}.map a{position:absolute;background:#0c1219;padding:13px 20px;border:1px solid #d6be9455;font-size:13px}.map a small{display:block;font-size:8px;color:var(--gold);margin-top:6px;letter-spacing:2px}.empty{margin-top:45px;border-top:1px solid var(--line);padding-top:28px;color:#b4b9bd;max-width:450px;line-height:2;font-size:13px}.empty span{display:block;color:#777f87;font-size:11px}.sample{font-size:10px;color:var(--gold);letter-spacing:1px;margin-top:28px}.reading{max-width:760px;background:#080d13ef;margin:20px auto 80px;padding:48px 55px;border:1px solid var(--line)}.reading h1{font-size:34px;letter-spacing:4px}.reading p{line-height:2.3;color:#b7bec3;font-size:15px;margin:30px 0}.reading .return{font-size:12px;color:var(--gold)}footer{position:relative;z-index:4;padding:15px 4.5% 25px;display:flex;justify-content:space-between;align-items:center;font-size:9px;color:#838d95;letter-spacing:2px}footer div{display:flex;gap:20px}footer button{border:0;font-size:10px;padding:8px 0;letter-spacing:1px}.skip{position:fixed;z-index:100;top:-60px;left:20px;background:#d8c3a0;color:black;padding:12px}.skip:focus{top:10px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.exploring .hero{background:transparent}.explore-panel{margin-top:25px;display:flex;gap:10px;flex-wrap:wrap}.explore-panel button{padding:9px 15px;font-size:11px;background:#080d13aa}body.inside .shade{background:linear-gradient(90deg,#05090fee 10%,#05090f44 90%)}@media(min-width:1500px){.hero{padding-top:17vh}}@media(max-width:700px){header{padding:25px 6%}.brand{font-size:19px}nav{display:none;position:absolute;top:90px;right:6%;background:#0b1119f5;padding:22px;flex-direction:column;gap:15px}nav.open{display:flex}#menu{display:block;padding:8px 12px}.hero{padding:15vh 8% 90px;min-height:calc(100svh - 175px)}h1{font-size:49px;letter-spacing:8px}.hero .english{font-size:8px;letter-spacing:4px}.intro{font-size:12px}.hint{display:none}.coordinate{display:none}footer{justify-content:flex-end;padding-right:6%}.page{padding-top:8vh}.page h1{font-size:40px}.reading{padding:25px;margin:15px 6% 50px}.reading h1{font-size:28px}.shade{background:linear-gradient(90deg,#05090fc9,#05090f33)}.map a{padding:10px;font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.study-link{display:block;max-width:450px;margin-top:35px;padding:20px 0;border-top:1px solid var(--line);font-size:14px}.study-link span{display:block;font-size:10px;color:var(--gold);margin-top:14px}.album{max-width:1000px;margin:auto;padding:20px 5% 70px;background:#070c12df}.album-top{display:flex;justify-content:space-between;font-size:11px;color:var(--gold);padding-bottom:20px}.album-image{width:100%;max-height:60vh;object-fit:contain;background:#03070c}.album-caption{display:flex;justify-content:space-between;align-items:center;font-size:15px;padding:20px 0;text-align:center}.album-caption button{border-radius:50%;width:36px;height:36px}.album-caption small{display:block;font-size:9px;color:#919aa2;margin-top:9px}.thumbnails{display:flex;justify-content:center;gap:10px}.thumbnails button{width:85px;padding:3px}.thumbnails button[aria-pressed=true]{border-color:var(--gold)}.thumbnails img{width:100%;display:block}@media(max-width:700px){.actions{gap:12px;width:100%}.primary{white-space:nowrap;letter-spacing:1px;padding:13px 16px;gap:20px;flex-shrink:0}.quiet{padding:10px 0;white-space:nowrap;font-size:10px}.hero{padding-top:12vh}.hero .index{position:static;margin-top:35px}h1{font-size:clamp(36px,12vw,49px)}.brand span{letter-spacing:2px}.hero .english{letter-spacing:3px}}
/* Stellar threshold / planetary navigation */
nav{gap:22px;font-size:11px}.in-hub main{min-height:calc(100svh - 170px)}.in-hub .shade{background:linear-gradient(180deg,#05090f44,transparent 28%,transparent 75%,#05090f66)}.in-hub #sky{opacity:.35}.planetarium{min-height:calc(100svh - 180px);touch-action:pan-y}.hub-heading{position:fixed;left:6%;top:125px;pointer-events:none}.hub-heading h1{font-size:34px;letter-spacing:8px;margin:17px 0 13px}.hub-heading p{font-size:11px;color:#919ba4;letter-spacing:1px;max-width:270px;line-height:1.8}.hub-heading .eyebrow{font-size:8px;letter-spacing:3px}.planet-node{position:fixed;width:100px;height:100px;transform:translate(-50%,-50%);border:0;border-radius:50%;padding:0;background:transparent;cursor:pointer;outline-offset:10px;z-index:5}.planet-node:hover{background:transparent}.planet-label{position:absolute;left:50%;top:calc(100% + 12px);transform:translateX(-50%);width:190px;display:block;text-align:center;pointer-events:none;text-shadow:0 2px 9px #000}.planet-label small{display:block;font-size:8px;letter-spacing:2px;color:#949a9e;margin-bottom:8px}.planet-label strong{font-family:serif;font-size:18px;font-weight:400;letter-spacing:4px;color:#d9d7cf}.planet-label em{font:12px sans-serif;color:var(--gold);display:inline-block;opacity:0;transform:translateX(-4px);transition:all .2s}.planet-node:hover em,.planet-node:focus-visible em{opacity:1;transform:none}.stellar-return{position:fixed;left:6%;bottom:33px;font-size:10px;color:var(--gold);letter-spacing:2px;z-index:6}.hub-hint{position:fixed;left:50%;bottom:36px;transform:translateX(-50%);font-size:9px;color:#828e97;letter-spacing:1px;white-space:nowrap}.in-hub footer,.traveling footer{position:fixed;bottom:0;width:100%;pointer-events:none}.in-hub footer .coordinate,.traveling footer .coordinate{visibility:hidden}footer button{pointer-events:auto}.journey-ui{position:fixed;inset:110px 0 70px;display:flex;flex-direction:column;justify-content:space-between;padding:35px 6%;pointer-events:none}.journey-note{max-width:300px}.journey-note p{font-size:12px;line-height:2;color:#a9b0b5;letter-spacing:2px}.journey-actions{display:flex;gap:18px;pointer-events:auto;align-self:flex-end}.journey-actions button{padding:10px 15px;background:#080d1388;font-size:11px}.traveling nav{opacity:.3;pointer-events:none}.traveling .shade{background:linear-gradient(0deg,#05080d88,transparent 40%)}.module-return{display:inline-block;font-size:10px;color:var(--gold);margin-bottom:35px;letter-spacing:1px}.geology{font-size:10px;color:#7f929e;letter-spacing:2px;margin-top:23px}.inside .page{padding-top:4vh}.fallback-planet{display:none}.no-webgl #universe{background:radial-gradient(ellipse at 70% 40%,#26343f66,transparent 65%)}.no-webgl .fallback-planet{display:block;width:100%;height:100%;border-radius:50%;background:radial-gradient(circle at 23% 23%,#829da6,#16394d 38%,#020609 80%);box-shadow:0 0 8px #70b9d744}.no-webgl .kind-1{filter:sepia(1)}.no-webgl .kind-2{filter:brightness(1.4)}.no-webgl .kind-3{filter:grayscale(1)}.no-webgl .kind-4{filter:hue-rotate(30deg)}.no-webgl .planet-node:nth-child(1){left:25%;top:40%}.no-webgl .planet-node:nth-child(2){left:50%;top:60%}.no-webgl .planet-node:nth-child(3){left:70%;top:30%}.no-webgl .planet-node:nth-child(4){left:85%;top:60%}.no-webgl .planet-node:nth-child(5){left:30%;top:78%}
@media(max-width:1100px){nav{gap:15px;font-size:10px;letter-spacing:1px}}@media(max-width:700px){.hub-heading{left:7%;top:105px}.hub-heading h1{font-size:26px;letter-spacing:5px;margin:13px 0}.hub-heading p{display:none}.hub-heading .eyebrow{font-size:7px;letter-spacing:2px}.planet-label{width:145px;top:calc(100% + 9px)}.planet-label strong{font-size:15px;letter-spacing:3px}.planet-label small{font-size:7px;letter-spacing:1px;margin-bottom:6px}.hub-hint{display:none}.stellar-return{bottom:72px;font-size:9px}.in-hub footer{padding-bottom:18px}.journey-ui{padding-top:20px}.journey-note p{font-size:11px}.module-page h1{font-size:36px;letter-spacing:5px}.inside .page{padding-top:3vh}.no-webgl .planet-node{width:70px;height:70px}.no-webgl .planet-node:nth-child(1){left:25%;top:36%}.no-webgl .planet-node:nth-child(2){left:75%;top:45%}.no-webgl .planet-node:nth-child(3){left:25%;top:60%}.no-webgl .planet-node:nth-child(4){left:75%;top:71%}.no-webgl .planet-node:nth-child(5){left:25%;top:83%}}
.message-form{max-width:430px;margin-top:32px;padding:25px;background:#090f15d9;border:1px solid #c7b58e30}.message-form label{display:block;font-size:11px;color:#c1b496;letter-spacing:2px;margin-bottom:10px}.message-form input,.message-form textarea{width:100%;display:block;margin:0 0 20px;padding:12px;border:1px solid #ffffff25;background:#040a10a8;color:#e5e1d8;font:13px/1.8 inherit;resize:vertical;border-radius:0}.message-form input:focus,.message-form textarea:focus{outline:1px solid var(--gold)}.message-form .primary{font-size:11px;padding:12px 20px}.message-form button:disabled{opacity:.5;cursor:wait}.message-form p{font-size:10px;line-height:1.8;color:#929eaa;margin-bottom:0}.message-stream{max-width:430px;font-size:12px;color:#9eabb6;padding:22px 0}.visitor-message{border-bottom:1px solid var(--line);padding:18px 0}.visitor-message div{display:flex;justify-content:space-between}.visitor-message strong{font-size:12px;font-weight:400;color:#d6c39e}.visitor-message time{font-size:9px;color:#687c8d}.visitor-message p{white-space:pre-wrap;line-height:2;overflow-wrap:anywhere}.quiet-signal{font-size:11px;color:#85919b}@media(max-width:700px){.terminal-page h1{font-size:31px}.message-form{padding:20px}}
@media(min-width:701px) and (max-width:1100px){.hub-heading{top:105px}.hub-heading h1{font-size:26px;margin:12px 0}.hub-heading p{display:none}.hub-heading .eyebrow{font-size:7px}}
/* Orbital carousel and surface exhibits */
.in-hub main{touch-action:none;cursor:grab}.dragging main,.dragging button{cursor:grabbing!important}.planetarium{touch-action:none}.planet-node{touch-action:none}.planet-node:not(.is-front):not(.station-node) .planet-label{opacity:.65}.planet-node.is-front .planet-label{opacity:0}.planet-label strong{font-size:15px;letter-spacing:3px}.planet-label small{font-size:7px}.station-node .planet-label{width:170px}.station-node .planet-label strong{font-size:12px;letter-spacing:2px}.station-node .planet-label small{font-size:7px;color:#b29d79}.hub-heading{top:115px}.hub-heading h1{font-size:29px}.hub-heading p{max-width:240px}.orbit-caption{position:fixed;left:6%;bottom:130px;max-width:255px;pointer-events:none}.orbit-caption small{font-size:9px;color:var(--gold);letter-spacing:2px}.orbit-caption h2{font:400 31px serif;letter-spacing:6px;margin:18px 0}.orbit-caption p{font-size:11px;line-height:2;color:#8b9ba7;letter-spacing:1px}.orbit-controls{position:fixed;left:50%;bottom:66px;transform:translateX(-50%);display:flex;align-items:center;gap:18px;z-index:9}.orbit-controls button{font-size:10px;letter-spacing:1px;padding:10px 16px;background:#060d14bb}.orbit-controls button:first-child,.orbit-controls button:last-child{padding:10px 13px}.in-hub .stellar-return{bottom:29px}.in-hub .shade{background:linear-gradient(180deg,#05090f33,transparent 28%,transparent 78%,#05090f66)}.inside #sky{display:none}body.inside .shade{background:linear-gradient(90deg,#050a12a8,transparent 63%),linear-gradient(0deg,#040a1233,transparent 35%)}.surface-page{padding:80px 6% 80px;min-height:calc(100svh - 170px)}.surface-topline{display:flex;align-items:center;gap:24px;margin-bottom:26px}.surface-topline a,.surface-topline button{font-size:10px;color:#c3b28f;letter-spacing:1px}.surface-topline button{border:0;padding:8px 0;color:#93a5b2}.surface-heading{max-width:440px;transition:opacity .25s}.surface-heading .eyebrow{font-size:8px;letter-spacing:3px}.surface-heading h1{font-size:44px;font-weight:400;letter-spacing:8px;margin:22px 0 18px}.surface-heading p{font-size:12px;color:#a5b3bc;letter-spacing:1px;line-height:2}.surface-content{width:min(360px,90%);margin-top:34px;padding:22px 24px;background:linear-gradient(135deg,#10191fe8,#0a1118bd);border:1px solid #d5bf8e26;border-top-color:#c7af7b66;backdrop-filter:blur(9px);transition:opacity .25s}.content-rubric{padding-bottom:17px;border-bottom:1px solid #d5c39324}.content-rubric span{display:block;font:16px serif;letter-spacing:4px;color:#d4c5a8}.content-rubric small{font-size:9px;color:#7d929f;display:block;margin-top:10px;line-height:1.8}.quiet-empty{font-size:12px;line-height:2;color:#c1c7c8;padding-top:20px}.quiet-empty small{display:block;font-size:10px;color:#788c99;margin-top:9px}.exhibit-entry{display:block;padding:22px 0 5px}.exhibit-entry small{font-size:9px;color:#8a978f}.exhibit-entry strong{display:block;font:400 19px serif;letter-spacing:2px;margin-top:14px}.exhibit-entry span{display:block;font-size:10px;color:#b6a581;margin-top:22px}.theme-thoughts .surface-content{background:linear-gradient(140deg,#152229ed,#0b141cce);border-left:3px solid #b9a48155}.theme-works .surface-content{border-color:#8c775c66;box-shadow:inset 0 -5px 0 #1d252a}.theme-visions .surface-content{background:linear-gradient(140deg,#26383fbc,#111d29d4);border-color:#abc4c43a}.memory-tabs{display:flex;gap:22px;margin-top:19px}.memory-tabs button{font-size:10px;border:0;padding:6px 0;color:#829ba8}.memory-tabs button.selected{border-bottom:1px solid #ccb98f;color:#cfbc95}.surface-content .study-link{margin-top:22px;padding:15px 0 0;font-size:12px}.surface-content .message-form{background:transparent;border:0;padding:18px 0 0;margin:0}.surface-content .message-stream{padding-bottom:0}.surface-location{font-size:9px;letter-spacing:2px;color:#8296a1;margin-top:22px}.surface-reading{max-width:690px;margin:45px 6% 80px;background:linear-gradient(140deg,#152027f2,#0b131cf2);border-top-color:#ad997369}.immersed .surface-heading,.immersed .surface-content,.immersed .surface-location{opacity:0;pointer-events:none}.immersed .surface-topline{position:fixed;top:130px;left:6%;z-index:9}.theme-guestbook .surface-content{width:390px;max-width:100%}.in-hub footer{z-index:10}.surface-page .message-form input,.surface-page .message-form textarea{font:12px/1.8 'Microsoft YaHei',sans-serif}
@media(max-width:900px){.surface-page{padding-top:35px}.surface-heading h1{font-size:36px}.surface-content{width:330px;max-width:80%;padding:20px}.orbit-caption{left:6%;bottom:140px;max-width:210px}.orbit-caption h2{font-size:27px}.orbit-caption p{font-size:10px}.hub-heading p{display:none}.hub-heading h1{font-size:26px}}
@media(max-width:700px){.hub-heading{top:105px}.orbit-caption{left:7%;bottom:138px;max-width:210px}.orbit-caption h2{font-size:25px;margin:13px 0}.orbit-caption p{font-size:9px;line-height:1.8;max-width:190px}.orbit-caption small{font-size:8px;letter-spacing:1px}.orbit-controls{bottom:76px;gap:10px;white-space:nowrap}.orbit-controls button{padding:10px;font-size:9px}.in-hub .stellar-return{bottom:30px;font-size:8px}.planet-label{width:125px;top:calc(100% + 7px)}.planet-label strong{font-size:11px;letter-spacing:2px}.planet-label small{font-size:6px}.station-node .planet-label strong{font-size:10px}.station-node .planet-label{width:130px}.surface-page{padding-top:17px;padding-bottom:70px}.surface-topline{margin-bottom:30px}.surface-heading h1{font-size:33px;letter-spacing:5px;margin:19px 0 14px}.surface-heading p{font-size:11px;max-width:280px}.surface-heading .eyebrow{font-size:7px;letter-spacing:2px}.surface-content{margin-top:28px;max-width:100%;width:310px;padding:20px;background:#101b23d9}.surface-location{font-size:8px}.content-rubric span{font-size:15px}.content-rubric small{font-size:8px}.immersed .surface-topline{top:104px}.surface-reading{margin:20px 6% 50px;padding:25px}.surface-reading h1{font-size:27px}}
.no-webgl .station-node .fallback-planet{border-radius:0;background:linear-gradient(90deg,#172c3c 0 25%,#6b756f 26% 34%,#202b30 35% 65%,#6b756f 66% 74%,#172c3c 75%);clip-path:polygon(0 35%,35% 35%,42% 0,58% 0,65% 35%,100% 35%,100% 65%,65% 65%,58% 100%,42% 100%,35% 65%,0 65%);box-shadow:none}.no-webgl .planet-node.is-front .planet-label{opacity:1}@media(max-width:700px){.station-node .planet-label{transform:translateX(-50%);width:105px}}

/* Fixed navigation and deliberate scene gestures. Reading remains selectable. */
html{scroll-padding-top:124px}body{padding-top:112px}header{position:fixed;inset:0 0 auto;height:112px;z-index:40;background:linear-gradient(180deg,#060c12ed,#060c12b5 75%,#060c1200);backdrop-filter:blur(8px)}
.at-home main,.in-hub main,.surface-heading,.surface-topline,.surface-location{user-select:none;-webkit-user-select:none}.at-home main,.in-hub main,.immersed main{touch-action:none}.scene-pressed,.scene-pressed *{user-select:none!important;-webkit-user-select:none!important}.reading,.surface-content,.album-caption{user-select:text;-webkit-user-select:text}.dragging main{cursor:grabbing}.immersed .surface-topline{top:130px}.inside:not(.immersed) .surface-page{touch-action:pan-y}
@media(max-width:700px){body{padding-top:92px}header{height:92px}nav{top:78px}html{scroll-padding-top:102px}.immersed .surface-topline{top:108px}}

@media(max-width:700px){.at-home .hero{padding-top:34vh;min-height:calc(100svh - 150px)}.at-home .hero .intro{margin:24px 0}.at-home .hero h1{margin-top:19px}}
/* Viewport layouts: pages stay still; long content uses page controls. */
html,body{width:100%;height:100%;height:100svh;overflow:hidden;overscroll-behavior:none;scroll-behavior:auto}body{padding:0}header{height:78px;padding:18px 4.5%;background:linear-gradient(#050b12f2,#050b12a8 80%,transparent)}.brand{font-size:16px;letter-spacing:3px;white-space:nowrap}.brand span{font-size:5.5px;letter-spacing:2px;margin-top:6px}nav{font-size:10px;gap:21px}main{position:fixed!important;inset:78px 0 46px;min-height:0!important;height:auto;overflow:hidden;touch-action:none}.inside:not(.immersed) .surface-page{touch-action:none}footer,.in-hub footer,.traveling footer{position:fixed;inset:auto 0 0;height:46px;padding:8px 4.5%;z-index:45}footer button{font-size:9px}.coordinate{font-size:8px}
.hero,.at-home .hero{position:absolute;inset:0;min-height:0;height:100%;padding:0 8%;display:flex;justify-content:center}.hero h1{font-size:clamp(44px,5.9vw,80px);margin:20px 0 16px}.hero .intro{margin:24px 0}.hero .index{bottom:17px}.hero .hint{bottom:17px;font-size:9px}.hero .eyebrow{font-size:8px}.hero .english{font-size:9px}
.surface-page{position:absolute;inset:0;min-height:0;padding:0}.surface-topline,.immersed .surface-topline{position:absolute;left:6%;top:16px;margin:0;z-index:9}.surface-heading{position:absolute;left:6%;top:66px;max-width:410px}.surface-heading h1{font-size:32px;letter-spacing:6px;margin:18px 0 12px}.surface-heading p{font-size:10px;max-width:340px;line-height:1.8}.surface-content{position:absolute;left:6%;bottom:24px;max-height:calc(100% - 238px);width:330px;margin:0;padding:18px 21px;overflow:hidden}.surface-location{position:absolute;left:6%;bottom:4px;margin:0;font-size:7px}.content-rubric{padding-bottom:12px}.content-rubric span{font-size:15px}.content-rubric small{font-size:8px;margin-top:7px}.exhibit-entry{padding:14px 0 0}.exhibit-entry strong{font-size:18px;margin-top:10px}.exhibit-entry span{margin-top:14px}.quiet-empty{font-size:11px;line-height:1.8;padding-top:15px}.memory-tabs{margin-top:12px}.surface-content .study-link{font-size:11px;margin-top:14px;padding-top:12px}
.reading.surface-reading{position:absolute;inset:10px 6% 12px;margin:0 auto;padding:24px 34px;width:min(760px,88%);max-width:none;overflow:hidden}.reading.surface-reading h1{font-size:28px;margin:17px 0;letter-spacing:4px}.reading.surface-reading .sample{margin:14px 0 8px;font-size:9px}.reading .page-copy{font-size:14px;line-height:1.9;white-space:pre-line}.surface-content .page-copy{font-size:11px;line-height:1.85;padding-top:12px}.text-pager{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:20px;font-size:9px;color:#a7afb2}.text-pager button{padding:7px 11px;font-size:9px}.text-pager button:disabled{opacity:.3;cursor:default}.surface-content .text-pager{margin-top:12px}.album{position:absolute;inset:4px 5% 8px;padding:12px 20px;display:flex;flex-direction:column;overflow:hidden;max-width:none}.album-top{flex:0 0 30px;padding-bottom:8px}.album-image{height:0;min-height:0;flex:1;max-height:none;object-fit:contain}.album-caption{flex:0 0 65px;padding:12px 0;font-size:12px}.thumbnails{flex:0 0 40px}.thumbnails button{width:65px}.thumbnails img{max-height:40px;object-fit:cover}
.hub-heading{top:98px;left:5.5%;max-width:240px}.hub-heading .eyebrow{font-size:6px;letter-spacing:2px}.hub-heading h1{font-size:19px;letter-spacing:4px;margin:12px 0 10px}.hub-heading p{font-size:8px;line-height:1.7;max-width:210px}.planet-label{top:auto;bottom:calc(100% + 10px)}.planet-label strong{font-size:13px;letter-spacing:3px}.planet-label small{font-size:6px;margin-bottom:5px}.planet-node.is-front .planet-label{opacity:0}.orbit-caption{position:fixed;bottom:auto;left:50%;top:205px;transform:translate(-50%,-100%);max-width:340px;width:max-content;text-align:center;z-index:8}.orbit-caption h2{font-size:29px;margin:12px 0 9px;letter-spacing:6px}.orbit-caption small{font-size:7px;letter-spacing:2px}.orbit-caption p{font-size:9px;line-height:1.8;margin:0;max-width:320px}.orbit-controls{bottom:65px}.stellar-return{bottom:18px}
.observatory-hud{position:absolute;inset:0}.observatory-heading{position:fixed;left:5.5%;top:105px;pointer-events:none;max-width:350px}.observatory-heading h1{font-size:30px;letter-spacing:5px;margin:16px 0 12px}.observatory-heading .eyebrow{font-size:7px;letter-spacing:2px}.observatory-heading p{font-size:10px;color:#b0b9bd;line-height:1.9;max-width:310px}.station-actions{position:fixed;right:5%;top:104px;display:flex;flex-direction:column;align-items:flex-end;gap:10px;z-index:10}.station-actions span{font-size:9px;color:#a7b8c3;letter-spacing:1px;margin-bottom:3px}.station-actions button{font-size:10px;padding:8px 11px;background:#0a141bab}.console-random{position:fixed;transform:translate(-50%,-50%);padding:10px 19px;background:#112932e8;border-color:#a6b6ad70;z-index:9;min-width:185px;box-shadow:0 0 24px #89b8bb14}.console-random small{display:block;font-size:7px;color:#95b2b9;letter-spacing:3px;margin-bottom:7px}.console-random span{font-size:11px;letter-spacing:1px}.console-random:disabled{opacity:.45;cursor:default}.station-hint{position:fixed;left:5.5%;bottom:64px;color:#869ca9;font-size:8px;letter-spacing:1px;pointer-events:none}.echo-empty{position:fixed;left:5.5%;top:245px;max-width:260px;font-size:11px;line-height:2;color:#a5b0b7;pointer-events:none}.echo-point{position:fixed;width:40px;height:40px;transform:translate(-50%,-50%);border:0;border-radius:50%;padding:0;z-index:6;background:transparent}.echo-point:before{content:'';position:absolute;width:8px;height:8px;border:1px solid #dfc79a88;border-radius:50%;left:16px;top:16px;box-shadow:0 0 10px #e2c18c55}.echo-point span{position:absolute;left:50%;bottom:37px;transform:translateX(-50%);font-size:9px;white-space:nowrap;opacity:0;color:#ddcaa5}.echo-point:hover span,.echo-point:focus-visible span{opacity:1}.echo-point:hover{background:#d8b8820c}.echo-dialog{position:fixed;margin:auto;width:min(460px,94vw);max-height:calc(100svh - 24px);border:1px solid #acbdb746;background:linear-gradient(140deg,#172932f7,#0b161efc);color:#d4dcdb;padding:0;z-index:100;overflow:hidden}.echo-dialog::backdrop{background:#02081077;backdrop-filter:blur(3px)}.echo-dialog-inner{padding:26px 30px}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:20px}.dialog-top small{font-size:8px;color:#b7c0b4;letter-spacing:2px}.dialog-top button{font-size:21px;border:0;padding:0 3px}.echo-dialog h2{font:400 25px serif;letter-spacing:3px;margin:20px 0 10px}.echo-dialog time{font-size:9px;color:#7f98a7}.echo-text{font-size:14px;line-height:1.9;white-space:pre-wrap;min-height:100px;margin:23px 0}.echo-list{margin-top:20px}.echo-list button{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid #bfc4ba1c;padding:12px 0}.echo-list strong{font-size:12px;font-weight:400}.echo-list span{display:block;font-size:9px;color:#91a1aa;margin-top:8px;line-height:1.8}.echo-dialog .message-form{padding:8px 0 0;margin:0;border:0;background:none}.echo-dialog .message-form label{font-size:10px}.echo-dialog .message-form input{height:35px;font-size:12px;padding:8px 10px}.echo-dialog .message-form textarea{height:80px;min-height:0;font-size:12px;padding:9px 10px;resize:none}.echo-dialog .message-form .primary{padding:11px 17px;font-size:10px;margin-top:14px}.echo-dialog #message-status{font-size:9px;line-height:1.8;margin:12px 0 0}
@media(max-width:700px){header{height:78px;padding:18px 6%}.brand{font-size:14px;letter-spacing:2px}.brand span{font-size:5px;letter-spacing:1.6px}#menu{padding:7px 10px;font-size:14px}nav{top:68px}main{inset:78px 0 45px}.at-home .hero{padding:0 8% 76px;justify-content:flex-end}.at-home .hero h1{font-size:42px;margin:15px 0}.hero .english{font-size:8px;letter-spacing:3px}.at-home .hero .intro{font-size:11px;margin:20px 0}.hero .index{position:absolute;bottom:18px;margin:0}.surface-heading{top:62px}.surface-heading h1{font-size:28px;margin:15px 0 12px}.surface-heading p{font-size:10px;max-width:290px}.surface-content{width:calc(88%);bottom:26px;max-height:calc(100% - 224px);padding:17px 20px}.surface-location{bottom:8px}.surface-topline{top:14px}.reading.surface-reading{inset:8px 5% 8px;width:90%;padding:20px 22px}.reading.surface-reading h1{font-size:25px}.reading .page-copy{font-size:13px;line-height:1.95}.hub-heading{top:96px;left:7%;max-width:160px}.hub-heading h1{font-size:17px}.hub-heading .eyebrow{font-size:5px;letter-spacing:1px}.orbit-caption{max-width:240px}.orbit-caption h2{font-size:23px;letter-spacing:4px;margin:10px 0}.orbit-caption p{display:none}.orbit-caption small{font-size:6px;letter-spacing:1px}.planet-label{bottom:calc(100% + 9px);width:110px}.planet-label strong{font-size:10px;letter-spacing:2px}.planet-label small{font-size:5px}.station-node .planet-label{width:100px}.orbit-controls{bottom:65px}.observatory-heading{top:100px;left:6%;max-width:230px}.observatory-heading h1{font-size:25px}.observatory-heading p{font-size:9px;max-width:200px}.station-actions{right:6%;top:194px;gap:8px}.station-actions button{font-size:9px;padding:7px 9px}.station-actions span{font-size:8px}.station-hint{font-size:7px;max-width:240px;line-height:1.8;bottom:60px}.echo-empty{left:6%;top:250px;max-width:190px;font-size:10px}.console-random{padding:9px 13px;min-width:173px}.console-random span{font-size:10px}.echo-dialog-inner{padding:21px 23px}.echo-dialog h2{font-size:22px}.echo-text{font-size:13px}.album{inset:4px 3% 8px;padding:10px}.journey-ui{inset:86px 0 58px}.planetarium{min-height:0}.in-hub main{min-height:0}}
@media(max-height:560px){.surface-heading{top:49px}.surface-heading h1{font-size:26px;margin:12px 0 8px}.surface-heading p{font-size:9px}.surface-content{max-height:calc(100% - 195px);bottom:18px;padding:13px 18px}.content-rubric small{display:none}.exhibit-entry{padding-top:10px}.exhibit-entry span{margin-top:8px}.hero .intro{margin:16px 0}.hero h1{font-size:55px;margin:15px 0}.observatory-heading p{display:none}.echo-dialog-inner{padding:18px 24px}.echo-dialog h2{margin-top:12px}.echo-text{margin:15px 0;font-size:12px;line-height:1.8}.echo-dialog .message-form textarea{height:58px}}
.orbit-caption{width:224px;max-width:224px}.orbit-caption p{display:none}.planet-node.label-overlap:not(:hover):not(:focus-visible) .planet-label{opacity:0}.no-webgl .echo-point{display:none}@media(max-height:560px){.reading.surface-reading{padding:15px 22px}.reading.surface-reading h1{font-size:22px;margin:10px 0}.reading.surface-reading .sample{font-size:8px;margin:8px 0}.reading .return{font-size:9px}}
.observatory-heading{padding:14px 18px;margin:-14px 0 0 -18px;background:linear-gradient(90deg,#061019d9,#0610198f 75%,transparent);text-shadow:0 2px 8px #000}.inside footer{background:linear-gradient(0deg,#030a10ed,transparent)}
.station-actions>span{background:#071019cc;padding:6px 9px;text-shadow:0 1px 4px #000}

/* Screen actions live in the 3D computer. DOM control is a keyboard equivalent. */
.echo-point{left:0;top:0;will-change:transform}.echo-point:before{border-color:#b6d3e055;box-shadow:0 0 13px #b6d3e044}.no-webgl .console-accessible{position:fixed;clip-path:none;overflow:visible;width:auto;height:auto;right:5%;top:290px;padding:12px;background:#14232b;border:1px solid #b9c4bc55}.console-accessible:focus-visible{outline:0}


.book-open-action{margin-top:17px;font-size:11px;padding:9px 0;border:0;border-bottom:1px solid #bba77b66;background:none;color:#d6c294}.profile-book{width:min(940px,94vw);max-height:92svh;padding:0;border:0;overflow:visible;background:transparent;color:#343b39}.profile-book::backdrop{background:#010810b8;backdrop-filter:blur(5px)}.profile-spread{display:grid;grid-template-columns:1fr 1.15fr;min-height:470px;box-shadow:0 25px 100px #0009}.profile-frontispiece,.profile-leaf{padding:34px 38px;background:#e8e2ce}.profile-frontispiece{background:linear-gradient(90deg,#c8c2ad,#e6dfc9 8%,#e9e3d1 91%,#beb6a0);text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:5px 0 0 5px}.profile-frontispiece>small,.profile-leaf header small{font-size:8px;letter-spacing:3px;color:#7a8174}.book-ornament{font:70px Georgia,serif;color:#ac9d78;margin:22px}.profile-frontispiece>span{font:28px 'Noto Serif SC','SimSun',serif;letter-spacing:8px}.profile-frontispiece>p{font-size:11px;color:#7b8276;line-height:2;margin-top:32px}.profile-leaf{background:linear-gradient(90deg,#cbc4af,#eee8d6 5%,#eae5d3 97%,#c8c0aa);border-radius:0 5px 5px 0;display:flex;flex-direction:column}.profile-leaf header{display:flex;align-items:center;justify-content:space-between}.profile-close{border:0;color:#5b655e;font:25px serif;padding:0 0 8px 10px}.profile-leaf h2{font:28px 'Noto Serif SC','SimSun',serif;letter-spacing:5px;font-weight:400;margin:30px 0 22px}.profile-name{font-size:12px;color:#717867}.profile-copy{white-space:pre-wrap;font-size:13px;line-height:2.1;min-height:220px;flex:1}.profile-pages{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #b6b39e;padding-top:14px;margin-top:23px}.profile-pages button{border:0;color:#505d55;padding:7px;font-size:16px}.profile-pages button:disabled{opacity:.25}.profile-pages span{font:9px Georgia,serif;letter-spacing:2px;color:#818879}@media(max-width:700px){.profile-spread{grid-template-columns:1fr;min-height:480px}.profile-frontispiece{display:none}.profile-leaf{border-radius:4px;padding:25px 28px}.profile-copy{min-height:250px;font-size:13px}.profile-leaf h2{margin:26px 0 20px}.profile-leaf header small{font-size:7px;letter-spacing:2px}}@media(max-height:560px){.profile-spread{min-height:0}.profile-leaf,.profile-frontispiece{padding:20px 28px}.profile-copy{min-height:120px;font-size:12px;line-height:1.85}.profile-leaf h2{margin:15px 0}.profile-pages{margin-top:12px;padding-top:5px}}

footer .coordinate{display:flex;align-items:center;gap:18px}.filing{font-size:9px;letter-spacing:.3px;color:#8b969c;white-space:nowrap}@media(max-width:700px){footer{justify-content:space-between;gap:8px}footer .coordinate>span{display:none}footer .coordinate{display:flex}.filing{font-size:8px;letter-spacing:0}footer div{gap:14px}}