@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Space+Grotesk:wght@400;500;600;700&display=swap";:root{font-family:DM Sans,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:#e9ebef;background:#080b11;font-synthesis:none;-webkit-font-smoothing:antialiased;--mint: #b1e2c9;--muted: #747b8a}*{box-sizing:border-box}body{margin:0}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button{background:none;border:none}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--mint);outline-offset:5px}button{transition:color .2s,background .2s,border-color .2s}svg{flex-shrink:0}.workspace{display:flex;height:100dvh;min-height:760px}.rail{width:76px;flex-shrink:0;border-right:1px solid #1c2029;background:#0c0f16;display:flex;align-items:center;flex-direction:column;padding:27px 0 23px;z-index:5}.brand-mark{width:31px;height:31px;display:block;position:relative}.brand-mark span:first-child{position:absolute;width:22px;height:22px;border:2px solid var(--mint);border-radius:50%;left:5px;top:4px}.brand-mark span:last-child{position:absolute;width:34px;height:12px;border:2px solid var(--mint);border-radius:50%;top:9px;left:-1px;transform:rotate(-40deg);background:#0c0f16}.brand-mark:after{content:"";width:8px;height:8px;background:var(--mint);border-radius:50%;position:absolute;top:12px;left:12px}.rail-links{display:flex;flex-direction:column;gap:20px;margin-top:57px}.rail-button{height:44px;width:44px;display:grid;place-items:center;color:#626b7b;border-radius:10px;position:relative}.rail-button:hover{color:var(--mint);background:#18231f}.rail-button.active{color:var(--mint);background:#1d302a}.rail-button.active:before{content:"";height:21px;width:2px;background:var(--mint);position:absolute;left:-16px;border-radius:2px}.rail-bottom{margin-top:auto}main{min-width:0;flex:1;display:flex;flex-direction:column}.header{height:82px;min-height:82px;padding:0 38px;border-bottom:1px solid #1d212b;display:flex;align-items:center;justify-content:space-between;background:#0a0d14;z-index:4}.wordmark{font-family:Space Grotesk,sans-serif;font-size:25px;font-weight:600;letter-spacing:5px;display:flex;align-items:center;gap:21px}.wordmark span{font-family:DM Sans,sans-serif;color:#777f8e;font-size:12px;font-weight:400;letter-spacing:2px;border-left:1px solid #2b303a;padding-left:20px}.top-nav{align-self:stretch;display:flex;gap:35px;margin-left:-76px}.top-nav button{color:#7d8492;font-size:13px;padding:0 5px;position:relative;letter-spacing:1px}.top-nav .nav-active{color:#d5e9dd}.nav-active:after{content:"";height:2px;width:25px;background:var(--mint);bottom:0;left:calc(50% - 12px);position:absolute}.top-nav button:hover{color:var(--mint)}.live-status{display:flex;align-items:center;gap:9px;color:#969ca6;font-size:11px;letter-spacing:1px}.live-status>span:first-child,.pulse{width:5px;height:5px;border-radius:50%;background:var(--mint);box-shadow:0 0 9px #b1e2c936;flex-shrink:0}.status-divider{color:#323943;margin:0 9px}.version{color:#59616e;font-family:Space Grotesk,sans-serif;font-size:10px}.explorer{flex:1;position:relative;min-height:0;overflow:hidden}#scene{position:absolute;top:0;right:0;bottom:0;left:0}#scene>canvas{display:block;width:100%;height:100%;cursor:grab}#scene>canvas:active{cursor:grabbing}.scene-vignette{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(90deg,#080b11a1 0%,transparent 29%,transparent 68%,#080b1150 100%),linear-gradient(180deg,#080b11c0,transparent 27%,transparent 81%,#080b1170)}.intro{position:absolute;top:35px;left:38px;pointer-events:none}.eyebrow{display:flex;align-items:center;gap:9px;color:var(--mint);font-family:Space Grotesk,sans-serif;font-size:9px;letter-spacing:2.2px;font-weight:500}.tiny-line{width:17px;height:1px;background:var(--mint)}h1{font-size:27px;font-weight:500;letter-spacing:2px;margin:14px 0 0;line-height:1.5}h1 span{display:block;color:#7f8694;font-size:13px;letter-spacing:1.5px;font-weight:400;margin-top:7px}.intro p{font-size:11px;color:#515a6b;letter-spacing:.7px;margin-top:9px}.scene-badge{position:absolute;top:40px;left:51%;transform:translate(-50%);display:flex;align-items:center;gap:8px;color:#929eac;font-size:10px;letter-spacing:1px;border:1px solid #26303b;border-radius:20px;padding:9px 13px;background:#0c121a99}.scene-badge .pulse{width:4px;height:4px;background:#83999b}.planet-nav{position:absolute;top:212px;left:38px;width:174px}.section-label{color:#657080;font-size:10px;letter-spacing:1.5px;display:flex;justify-content:space-between;align-items:center;padding:0 12px 17px}.section-label span{font-family:Space Grotesk;font-size:9px;color:#4b5463;border:1px solid #222a35;border-radius:4px;padding:1px 5px}.sun-button{display:flex;align-items:center;width:100%;padding:10px 12px;gap:14px;text-align:left;font-size:12px}.sun-button>svg{margin-left:auto;color:#505c6b}.sun-button small{display:block;font-size:8px;margin-top:6px;color:#5e6674;letter-spacing:.7px}.mini-sun{width:20px;height:20px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#ffd98a,#e28d34);box-shadow:0 0 16px #de8e2535}.nav-separator{height:1px;background:#202630;margin:13px 12px 11px}.planet-button{height:46px;width:100%;display:flex;align-items:center;gap:14px;padding:0 12px;text-align:left;border:1px solid transparent;border-radius:7px;margin:3px 0}.planet-button>span:nth-child(2){font-size:12px;letter-spacing:1px;color:#9da4b1}.planet-button small{display:block;font-family:Space Grotesk;font-size:7px;letter-spacing:1.6px;color:#586271;margin-top:4px}.planet-dot{height:17px;width:17px;flex-shrink:0;border-radius:50%;background:radial-gradient(circle at 32% 28%,var(--planet-color),#202731);box-shadow:inset -4px -1px 5px #0006;position:relative}.planet-dot-2{background:radial-gradient(ellipse at 35% 25%,#8daf90 0,#8daf90 20%,#4f98d2 25%,#265d86 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17px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 16px 60px #0002;transition:border-color .3s,box-shadow .3s}.details.highlight{border-color:#90c6ab;box-shadow:0 0 30px #94d8b51a}.detail-heading{color:#8b95a3;font-size:10px;letter-spacing:1.7px;display:flex;justify-content:space-between;align-items:center}.detail-heading svg{color:#5e6b7c}.planet-preview{height:176px;position:relative;display:grid;place-items:center;margin:10px -10px 0;overflow:hidden;background:radial-gradient(ellipse at center,#24406520,transparent 65%)}.planet-preview canvas{position:relative;z-index:1;width:260px;height:165px}.preview-orbit{position:absolute;width:204px;height:79px;border:1px solid #32425355;border-radius:50%;transform:rotate(-29deg)}.preview-orbit:after{content:"";position:absolute;width:157px;height:155px;border:1px dashed #32425344;border-radius:50%;left:23px;top:-37px}.preview-coordinate{position:absolute;bottom:3px;font-family:Space 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#000}.body-label>span{width:3px;height:3px;background:#667383;border-radius:50%}.body-label.is-selected{color:#d5ebdd;background:#192b2499;border-color:#49635699}.body-label.is-selected>span{background:var(--mint)}.body-label:hover{color:#fff;background:#19222dcc}.sun-label{position:absolute;transform:translate(-50%);font-size:10px;letter-spacing:3px;color:#ba955c;pointer-events:none}.view-controls{position:absolute;bottom:61px;right:31px;display:flex;align-items:center;border:1px solid #2b333d;border-radius:7px;background:#111721c9;padding:3px}.view-controls button{display:grid;place-items:center;width:33px;height:31px;color:#8995a6;border-radius:4px}.view-controls button:hover{background:#29353e;color:#ddeee4}.view-controls>span{height:14px;width:1px;background:#2d3440;margin:0 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.pulse{width:4px;height:4px;background:#6c927e}#toast{position:absolute;bottom:65px;left:50%;transform:translate(-50%,10px);opacity:0;pointer-events:none;border:1px solid #415647;background:#14271feb;padding:12px 18px;border-radius:8px;color:#c0d8ca;font-size:11px;transition:opacity .2s,transform .2s;z-index:10;max-width:80%}#toast.visible{opacity:1;transform:translate(-50%)}dialog{background:#121a24;color:#cad3df;border:1px solid #384657;border-radius:16px;max-width:440px;padding:37px;box-shadow:0 24px 100px #0008}dialog::backdrop{background:#03070bc0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}dialog h2{font-size:22px;font-weight:500;margin:20px 0}dialog p{font-size:13px;line-height:2;color:#909eae}dialog small{display:block;font-size:10px;line-height:1.8;color:#677a8d;margin-top:23px}#close-help{position:absolute;top:14px;right:14px;color:#8c9aac}html:not(:lang(zh)) .header{gap:20px}html:not(:lang(zh)) .wordmark span{display:none}html:not(:lang(zh)) .top-nav{margin-left:0;gap:20px}html:not(:lang(zh)) .top-nav button{letter-spacing:0}html:not(:lang(zh)) .live-status{letter-spacing:0}html:not(:lang(zh)) .intro{max-width:calc(100% - 365px)}html:not(:lang(zh)) .intro h1{font-size:24px;letter-spacing:0}html:not(:lang(zh)) .scene-badge{top:165px}html:not(:lang(zh)) .planet-title{flex-wrap:wrap}html:not(:lang(zh)) .planet-title h2{font-size:23px;letter-spacing:0}html:not(:lang(zh)) .planet-title .type-tag{margin-left:0}html:lang(en) .planet-title>span:nth-child(2),html:lang(en) .planet-button small{display:none}html:not(:lang(zh)) .details{max-height:calc(100% - 110px);overflow-y:auto}html:not(:lang(zh)) .stats>div>span{min-height:24px}html:not(:lang(zh)) .playback{gap:20px}html:not(:lang(zh)) .time-controls,html:not(:lang(zh)) .display-controls{padding-left:15px}html:not(:lang(zh)) .sim-time{display:none}html:not(:lang(zh)) .scale-note{display:none}html:not(:lang(zh)) .moon-phase-title{flex-wrap:wrap;gap:5px;margin-bottom:12px}html:not(:lang(zh)) .moon-phase-title h2{font-size:22px;letter-spacing:0}html:not(:lang(zh)) .moon-phase-options span{text-align:center;min-height:28px}html:not(:lang(zh)) .moon-phase-title>span{white-space:nowrap}[hidden]{display:none!important}.moon-page{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden;background:#080b11;--moon-inset: 30px;--moon-left: 38px;--moon-right: 30px;--moon-panel-width: 278px}.moon-stage{flex:1;min-height:0;position:relative;overflow:hidden}.moon-heading{position:absolute;top:var(--moon-inset);left:var(--moon-left);right:calc(var(--moon-panel-width) + var(--moon-right) + 24px);display:flex;justify-content:space-between;align-items:flex-start;gap:20px;pointer-events:none}.moon-heading h1{font-size:27px;margin-top:10px}.moon-heading p{font-size:11px;color:#8290a2;margin:12px 0 0}.moon-period{font-size:10px;color:#8290a2;border:1px solid #293b3b;background:#16282066;border-radius:8px;padding:12px 16px;white-space:nowrap}.moon-period strong{display:block;font-family:Space Grotesk,sans-serif;font-size:18px;color:var(--mint);font-weight:400;margin-top:6px}.moon-content{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.moon-observation,.moon-timeline{border:1px solid #29333f;border-radius:12px;background:#101822c9;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 16px 60px #0002}.moon-diagram{position:absolute;top:165px;left:var(--moon-left);width:250px}.moon-diagram>.moon-panel-heading{padding:0}.moon-panel-heading{display:flex;justify-content:space-between;gap:10px;padding:19px 20px;font-size:11px;letter-spacing:1px;color:#a3b2c3}.moon-panel-heading>span:last-child{font-size:9px;color:#657b91}#moon-scene{position:absolute;top:0;right:0;bottom:0;left:0}#moon-scene canvas{display:block;width:100%;height:100%;cursor:grab;touch-action:none}#moon-scene canvas:active{cursor:grabbing}.moon-body-label{position:absolute;transform:translate(-50%,-50%);pointer-events:none;white-space:nowrap;font-size:11px;color:#d3e4dd;background:#101c29bc;border:1px solid #3c535e;border-radius:5px;padding:5px 9px}.moon-diagram-note{display:flex;align-items:center;gap:9px;padding:12px 0 0;font-size:10px;color:#ae9a71}.sunlight-key{height:2px;width:22px;background:#b99754}.moon-diagram-note button{pointer-events:auto;margin-left:auto;font-size:10px;color:var(--mint);border:1px solid #354f44;border-radius:5px;padding:7px 10px;background:#101822aa}.moon-model-note{font-size:9px;line-height:1.8;color:#718093;margin:12px 0 0}.moon-observation{position:absolute;top:var(--moon-inset);right:var(--moon-right);width:var(--moon-panel-width);max-height:calc(100% - 2 * var(--moon-inset));overflow-y:auto;padding-bottom:18px;pointer-events:auto}.moon-disk{display:grid;place-items:center;height:clamp(95px,17vh,160px);background:radial-gradient(circle,#31445e22,transparent 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