@charset "UTF-8";
:root{color-scheme:dark;--night:#080d1b;--panel:#101829;--ink:#eeeef1;--muted:#98a4b9;--gold:#dec398;--line:#c4d1ec21;--font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:36px}body{margin:0;background:var(--night);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit;border:0;cursor:pointer}button,a,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}svg{display:block;width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.3}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible{outline:2px solid var(--gold);outline-offset:5px}::selection{background:#b8996b88;color:white}.svg-definitions{position:absolute;width:0;height:0;overflow:hidden}.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}.skip-link{position:fixed;left:20px;top:-80px;padding:15px 22px;background:var(--gold);color:var(--night);z-index:100}.skip-link:focus{top:15px}.wrap{max-width:1440px;padding-left:64px;padding-right:64px;margin-left:auto;margin-right:auto}.eyebrow{font:9px var(--mono);letter-spacing:2px;color:var(--gold);display:flex;align-items:center;gap:12px}.eyebrow>span:empty{width:23px;height:1px;background:var(--gold)}.section-number{color:#8995ad;font-size:10px;letter-spacing:0;margin-right:7px}.mobile-only{display:none}
.site-header{position:absolute;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:1440px;z-index:10;height:112px;padding:0 64px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-bottom:1px solid #e6ebff16}.brand{display:inline-flex;align-items:center;gap:11px;font-size:22px;letter-spacing:5px;font-weight:500;white-space:nowrap}.brand-icon{width:41px;height:41px;color:var(--gold);stroke-width:1}.brand small{display:block;font:8px var(--mono);letter-spacing:2.1px;color:#c6c5cd;margin-top:5px}.site-header nav{display:flex;gap:38px;font-size:12px;letter-spacing:1px}.site-header nav a{padding:14px 0;color:#d0d1df;transition:color .2s}.site-header nav a:hover{color:var(--gold)}.header-cta{display:flex;gap:25px;align-items:center;padding:11px 17px;border:1px solid #dee0ec44;border-radius:2px;font-size:11px;letter-spacing:1px;background:#10111b1f;transition:background .2s}.header-cta svg{width:17px;height:17px}.header-cta:hover{background:#ffffff12}
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.cosmic-facts{display:grid;grid-template-columns:1.1fr 1fr 1.35fr .8fr;padding-top:50px;padding-bottom:50px;border-bottom:1px solid var(--line)}.facts-intro p{font-size:16px;line-height:1.8;letter-spacing:1px;margin:14px 0 0;color:#d9dce5}.facts-intro .eyebrow{font-size:7px;letter-spacing:1.3px}.fact{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding-left:40px;border-left:1px solid var(--line)}.fact strong{font:46px var(--mono);font-weight:300;letter-spacing:-2px;color:#e9e8e8;white-space:nowrap}.fact strong span{font:10px var(--font);letter-spacing:0;margin-left:8px;color:var(--gold)}.fact>span{font-size:11px;color:#d7dbe4;margin-top:13px;letter-spacing:.4px}.fact small{font-size:9px;color:#748198;margin-top:8px;letter-spacing:.4px}.fact:hover strong{color:var(--gold)}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:37px}.section-heading h2{font-size:36px;line-height:1.55;font-weight:400;letter-spacing:-.7px;margin:19px 0 0}.section-heading>p{font-size:12px;line-height:1.9;color:var(--muted);margin:0 0 6px;letter-spacing:.6px}.section-aside{font-size:11px;letter-spacing:1px;color:var(--muted);margin-bottom:8px}.constellation-section{padding-top:99px;padding-bottom:0}.atlas{display:grid;grid-template-columns:1.5fr 1fr;border:1px solid var(--line);background:linear-gradient(125deg,#0f1728,#101627)}.atlas-map{position:relative;display:flex;flex-direction:column;overflow:hidden;background:radial-gradient(ellipse at 55% 42%,#172a471f,transparent 70%),linear-gradient(130deg,#0e192d,#0b1121);min-width:0}.atlas-map:before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(#a8c1e109 1px,transparent 1px),linear-gradient(90deg,#a8c1e109 1px,transparent 1px);background-size:60px 60px}.map-heading{position:relative;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:23px 25px;font:8px var(--mono);letter-spacing:1.4px;color:#8191ab}.map-heading button{font:10px var(--font);background:none;color:#b6bfcd;display:flex;align-items:center;gap:6px;padding:5px 0;white-space:nowrap}.toggle-dot{width:5px;height:5px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px #dec39855}.map-heading button[aria-pressed="false"] .toggle-dot{background:#53617b;box-shadow:none}.map-stage{position:relative;flex:1;min-height:359px;isolation:isolate}.map-stage>svg{position:absolute;inset:0;width:100%;height:100%;stroke-width:1;overflow:visible}.map-background-star{fill:#c0cee9;stroke:none;opacity:.5}.map-connection{stroke:#d8c3917d;stroke-width:1.4;fill:none;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;transition:opacity .35s}.map-stage.lines-hidden .map-connection{opacity:0}.star-point{position:absolute;transform:translate(-50%,-50%);width:44px;height:44px;display:grid;place-items:center;background:none;border-radius:50%;padding:0}.star-point .point-mark{width:5px;height:5px;border-radius:50%;background:var(--point-color,#e2e8f9);box-shadow:0 0 9px 2px var(--point-glow,#b8d7ff55),0 0 23px 3px #9eb2df19}.star-point.bright .point-mark{width:7px;height:7px}.star-point:hover:before,.star-point.selected:before,.star-point:focus-visible:before{content:"";position:absolute;width:23px;height:23px;border-radius:50%;border:1px solid #dec39888}.point-label{position:absolute;left:50%;top:37px;transform:translateX(-50%);white-space:nowrap;font-size:10px;color:#e5d2b3;letter-spacing:.5px;opacity:0;transition:opacity .2s;pointer-events:none;text-shadow:0 1px 8px #000}.star-point:hover .point-label,.star-point.selected .point-label,.star-point:focus-visible .point-label{opacity:1}.map-grid-label{position:absolute;font:18px var(--mono);color:#4052694d;pointer-events:none}.map-grid-label.north{left:17px;top:0}.map-grid-label.south{right:17px;bottom:0}.map-bottom{padding:19px 25px 23px;display:flex;justify-content:space-between;gap:12px;font-size:8px;color:#71849f;letter-spacing:.4px}.atlas-info{padding:30px 32px 28px;border-left:1px solid var(--line);min-width:0;display:flex;flex-direction:column}.constellation-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line);margin-bottom:31px}.constellation-tabs button{background:none;font-size:11px;color:#91a0b7;padding:7px 0 15px;position:relative;white-space:nowrap}.constellation-tabs button[aria-selected="true"]{color:var(--gold)}.constellation-tabs button[aria-selected="true"]:after{content:"";position:absolute;height:1px;background:var(--gold);bottom:-1px;left:0;right:0}.latin-name{font:9px var(--mono);letter-spacing:3px;color:#8796ad}.atlas-info h3{font-size:30px;font-weight:400;letter-spacing:3px;margin:12px 0 20px}.atlas-info #pattern-description{font-size:12px;line-height:2;color:#aab6c9;margin:0;min-height:72px}.pattern-fact{border-left:1px solid #dec39866;padding-left:15px;margin:23px 0 25px}.pattern-fact>span{font-size:9px;letter-spacing:1.5px;color:var(--gold)}.pattern-fact>p{font-size:11px;line-height:1.9;color:#91a0b6;margin:8px 0 0}.selected-star{padding:15px 12px;background:#a1b5e009;display:flex;align-items:center;gap:12px;border:1px solid #b4c4de10;margin-top:auto;min-height:63px}.selected-star-icon{font-size:22px;color:var(--gold)}.selected-star small{display:block;font-size:9px;color:#8394ae;margin-bottom:6px}.selected-star strong{font-size:11px;font-weight:400;letter-spacing:.4px}.source-link{display:inline-block;color:#a9b8cc;font-size:10px;letter-spacing:.2px;line-height:1.8}.source-link:hover{color:var(--gold)}.atlas-info>.source-link{font-size:9px;margin-top:19px}
.discover-section{padding-top:101px}.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.knowledge-card{padding:0;min-width:0;text-align:left;background:#101626;border:1px solid var(--line);transition:transform .3s,border-color .3s}.knowledge-card:hover{transform:translateY(-5px);border-color:#b9a38177}.card-visual{height:218px;position:relative;overflow:hidden;isolation:isolate;border-bottom:1px solid var(--line);background:#0c1222}.visual-caption{position:absolute;bottom:20px;left:25px;font:7px var(--mono);letter-spacing:2px;color:#71829e}.galaxy-visual{background:radial-gradient(ellipse at 50% 45%,#49416b3d,#0d1324 70%)}.galaxy-ellipse{position:absolute;left:50%;top:45%;border:1px solid #b6a4d84d;border-radius:50%;box-shadow:0 0 13px #9d94d51a,inset 0 0 12px #9d94d515;transform:translate(-50%,-50%) rotate(-28deg);width:220px;height:80px}.galaxy-ellipse.one{border-width:8px;border-color:#d3b8bf14;width:230px;height:83px;filter:blur(3px)}.galaxy-ellipse.two{width:175px;height:63px;border-color:#d4bfc78c;box-shadow:0 0 22px #c4afd93b}.galaxy-ellipse.three{width:120px;height:43px;border-width:8px;border-color:#d7b89b33;filter:blur(6px)}.galaxy-core{position:absolute;left:50%;top:45%;height:23px;width:46px;border-radius:50%;transform:translate(-50%,-50%) rotate(-28deg);background:#f6e2c2;filter:blur(9px);box-shadow:0 0 40px 17px #e7d1a129}.galaxy-visual:after,.lightyear-visual:after,.planets-visual:after{content:"";position:absolute;inset:0;z-index:-1;background-image:radial-gradient(circle at 14% 25%,#dbe5ff8a 0 1px,transparent 1.4px),radial-gradient(circle at 83% 70%,#dbe5ff55 0 .8px,transparent 1.3px),radial-gradient(circle at 63% 22%,#dbe5ff55 0 .7px,transparent 1.2px);background-size:120px 130px,190px 170px,210px 110px}.lightyear-visual{background:radial-gradient(ellipse at 20% 45%,#253b536b,#101626 65%)}.light-start{position:absolute;left:17%;top:36%;font-size:34px;color:#f0d5a9;text-shadow:0 0 28px #dec39890}.light-end{position:absolute;right:15%;top:35%;font-size:37px;color:#b7cbea}.light-path{position:absolute;top:45%;left:30%;right:30%;height:1px;background:linear-gradient(90deg,#dec398aa,#adc4e155)}.light-path:after{content:"";position:absolute;right:-3px;top:-2px;height:4px;width:4px;background:#c5d2eb;transform:rotate(45deg)}.light-distance{position:absolute;left:50%;top:55%;transform:translateX(-50%);font:13px var(--mono);color:#bec6d5;letter-spacing:4px}.planets-visual{background:radial-gradient(ellipse at 45% 45%,#2d2b454d,#101626 70%)}.orbit-path{width:240px;height:110px;position:absolute;left:50%;top:45%;transform:translate(-50%,-50%) rotate(-20deg);border:1px solid #d1bf9744;border-radius:50%}.planet-sun{position:absolute;left:41%;top:30%;height:51px;width:51px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#ffe8c5,#d0a668 70%,#77573a);box-shadow:0 0 32px #e5b46b33}.planet-ring{position:absolute;right:19%;top:50%;height:26px;width:26px;border-radius:50%;background:linear-gradient(135deg,#afb8cf,#455274);box-shadow:0 0 22px #7c99b522}.planet-ring:after{content:"";position:absolute;left:-13px;right:-13px;height:9px;border:2px solid #aa9d8266;border-radius:50%;top:7px;transform:rotate(-22deg)}.planet-dot{position:absolute;width:7px;height:7px;border-radius:50%;background:#b4bfcf;left:19%;top:49%}.card-content{padding:26px 25px 24px}.card-content .eyebrow{font:9px var(--font);letter-spacing:2px}.card-content h3{font-size:22px;font-weight:400;line-height:1.6;letter-spacing:.3px;margin:17px 0 14px}.card-content>p{font-size:11px;color:#95a4ba;line-height:1.95;margin:0;min-height:66px}.card-link{display:flex;align-items:center;justify-content:space-between;margin-top:25px;font-size:10px;color:#d2c2a8;letter-spacing:1px}.card-link svg{width:17px;height:17px}
.temperature-section{margin-top:102px;padding-top:59px;padding-bottom:59px;display:grid;grid-template-columns:.95fr 1.05fr;gap:60px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:radial-gradient(ellipse at 80% 50%,#1726441a,transparent 55%)}.temperature-copy{display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.temperature-copy h2{font-size:35px;font-weight:400;line-height:1.6;letter-spacing:.5px;margin:21px 0 21px}.temperature-copy>p{font-size:12px;color:#9aaac0;line-height:2.05;max-width:370px;margin:0 0 24px}.temperature-copy .source-link{font-size:9px;color:#af9f88}.temperature-lab{--star-rgb:255,237,211;border:1px solid var(--line);background:#0d1424;min-width:0}.lab-star-stage{height:255px;position:relative;display:grid;place-items:center;overflow:hidden}.lab-caption{position:absolute;top:22px;left:24px;font:8px var(--mono);letter-spacing:1.5px;color:#7e8ca4}.lab-star{width:99px;height:99px;border-radius:50%;background:radial-gradient(circle at 40% 30%,#ffffff,rgba(var(--star-rgb),1) 50%,rgba(var(--star-rgb),.8));box-shadow:0 0 22px 6px rgba(var(--star-rgb),.3),0 0 70px 26px rgba(var(--star-rgb),.12),0 0 130px 49px rgba(var(--star-rgb),.05);transition:box-shadow .25s,background .25s;position:relative}.lab-orbit{position:absolute;left:50%;top:50%;border:1px solid #9faec41a;transform:translate(-50%,-50%) rotate(-25deg);border-radius:50%;width:265px;height:136px}.lab-orbit.orbit-b{width:370px;height:190px;border-color:#9faec40d}.lab-star-label{position:absolute;bottom:21px;font-size:10px;letter-spacing:2px;color:#cbd0da}.lab-controls{border-top:1px solid var(--line);padding:22px 25px 18px}.temperature-readout{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.temperature-readout>label{font-size:10px;letter-spacing:1px;color:#b6c0d1}.temperature-readout>div{display:flex;align-items:baseline;gap:6px}.temperature-readout output{font:25px var(--mono);letter-spacing:-.7px}.temperature-readout>div>span{font:11px var(--mono);color:var(--gold)}#temperature{appearance:none;-webkit-appearance:none;width:100%;height:3px;display:block;cursor:ew-resize;background:linear-gradient(90deg,#e69765,#f3e4c6 30%,#e5e7f8 55%,#9eb9ee);border:0;border-radius:2px;margin:0}#temperature::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:13px;height:13px;border:3px solid #172033;background:#f1e6d2;box-shadow:0 0 0 1px #d2c6ae;border-radius:50%}#temperature::-moz-range-thumb{width:8px;height:8px;border:3px solid #172033;background:#f1e6d2;box-shadow:0 0 0 1px #d2c6ae;border-radius:50%}.temperature-scale{display:flex;justify-content:space-between;gap:8px;margin-top:14px}.temperature-scale button{font:8px var(--font);color:#8f9eb7;background:none;padding:5px 0;white-space:nowrap}.temperature-scale button:hover{color:var(--gold)}.lab-disclaimer{font-size:8px;color:#697c98;margin:14px 0 0;line-height:1.8}
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