:root{color-scheme:dark;--bg:#0b111b;--panel:#111c29;--ink:#e3eaf0;--muted:#8b9aaa;--accent:#dfbd8c;--line:#ffffff14}*{box-sizing:border-box}body{margin:0;overflow:hidden;background:radial-gradient(ellipse at 44% 38%,#273747 0,#111b28 48%,#080e17 100%);color:var(--ink);font:13px 'Microsoft YaHei','PingFang SC',sans-serif}button,input,select{font:inherit}button,a,select,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button,select{border:1px solid #ffffff20;border-radius:5px;background:#172431;color:var(--ink);padding:9px 12px}button:hover,button.active{color:var(--accent);border-color:#dfbd8c88;background:#273342}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button:disabled{opacity:.4;cursor:default}a{color:#b8d3e5}canvas.stage{display:block;touch-action:none;outline:none}header{position:fixed;left:27px;top:23px;z-index:3;pointer-events:none}header a{pointer-events:auto;text-decoration:none;color:var(--muted);font-size:11px;border:1px solid var(--line);border-radius:4px;padding:6px 9px;display:inline-block;background:#0c1621b3}header a:hover{color:var(--accent)}header .serial{font:9px Georgia,serif;color:var(--accent);letter-spacing:3px;margin-top:24px}h1{font-size:25px;font-weight:400;letter-spacing:3px;margin:10px 0 8px}header p{color:var(--muted);font-size:10px;margin:0;letter-spacing:1px}nav{position:fixed;left:27px;top:190px;display:flex;flex-direction:column;gap:8px;z-index:3}nav button{text-align:left;min-width:139px;background:#0e1926b8;border-color:#ffffff0c;font-size:12px;padding:12px}nav button small{display:block;font:9px Georgia,serif;letter-spacing:2px;margin-bottom:6px;color:var(--muted)}nav button.active{border-left:2px solid var(--accent)}aside{position:fixed;right:22px;top:22px;width:305px;background:#101b28f0;border:1px solid var(--line);border-radius:8px;backdrop-filter:blur(18px);padding:22px;max-height:calc(100dvh - 120px);overflow:auto;z-index:4;scrollbar-width:thin}.eyebrow{font:9px Georgia,serif;letter-spacing:2px;color:var(--accent)}h2{font-size:23px;font-weight:400;letter-spacing:1px;line-height:1.4;margin:14px 0 7px}#subtitle{font:italic 13px Georgia,serif;color:var(--muted)}#description{font-size:12px;color:#b2c0cd;line-height:1.95;margin:17px 0}#facts{display:grid;grid-template-columns:1fr 1fr;gap:16px;border-block:1px solid var(--line);padding:16px 0;margin-bottom:16px}#facts small{font-size:10px;color:var(--muted);display:block;margin-bottom:5px}#facts b{font-weight:400;font-size:14px}#selection{border-left:2px solid var(--accent);background:#dfbd8c08;padding:11px 12px;font-size:11px;line-height:1.9;margin:15px 0;color:#bac9d5}#selection b{display:block;color:var(--accent);font-weight:400;font-size:12px}.control{margin:18px 0}.control>label{font-size:10px;color:var(--muted);letter-spacing:1px;display:block;margin:10px 0}.control select{width:100%;font-size:12px}.check{display:flex;gap:8px;align-items:center;font-size:11px;color:#b6c5d1;margin:11px 0}.check input{accent-color:var(--accent)}input[type=range]{accent-color:var(--accent);width:100%;cursor:pointer}.buttons{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.buttons button{font-size:11px;padding:7px 9px}.tiny{font-size:10px;color:var(--muted);line-height:1.85}.divider{border-top:1px solid var(--line);margin:18px 0}details{margin-top:18px;font-size:10px;color:var(--muted);line-height:1.9}summary{cursor:pointer;color:#b8c4cf}details p{margin:10px 0}#legend{position:fixed;left:27px;bottom:115px;color:#a7b7c6;font-size:10px;line-height:2;pointer-events:none;z-index:2}#legend i{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:8px}#toolbar{position:fixed;left:calc(50% - 65px);bottom:22px;transform:translateX(-50%);display:flex;align-items:center;gap:10px;background:#0d1825ee;border:1px solid var(--line);border-radius:7px;padding:11px 13px;z-index:5;white-space:nowrap}#toolbar button{font-size:11px;padding:8px 11px}#toolbar label{font-size:10px;color:var(--muted)}#speed{width:85px;accent-color:var(--accent)}#hint{position:fixed;left:calc(50% - 65px);bottom:92px;transform:translateX(-50%);font-size:10px;color:#7f94a7;white-space:nowrap;pointer-events:none;z-index:2}#tooltip{position:fixed;display:none;z-index:7;padding:7px 10px;border:1px solid #dfbd8c55;background:#0c1724ed;border-radius:4px;color:var(--accent);font-size:11px;pointer-events:none;max-width:240px}#labels{position:fixed;inset:0;pointer-events:none;z-index:2;overflow:hidden}.tag{position:absolute;transform:translate(-50%,-50%);font-size:10px;color:#bdcddd;border:0;border-left:1px solid #dfbd8c99;border-radius:0;background:#101b29c7;padding:4px 7px;pointer-events:auto;white-space:nowrap}.tag.active{color:var(--accent)}#fold{display:none}#loading{position:fixed;inset:0;background:#0b121de8;z-index:15;display:grid;place-content:center;text-align:center;font-size:12px;color:#bfcdd8;line-height:2.5}#loading span{font:10px Georgia,serif;color:var(--accent);letter-spacing:3px}#status{position:fixed;left:27px;bottom:25px;font:9px Georgia,serif;letter-spacing:2px;color:#7f94a7;pointer-events:none}#stepInfo{padding:12px;background:#131f2d;border-radius:4px;border:1px solid var(--line);color:var(--accent);font-size:11px;line-height:1.8}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:8px}.steps button{font-size:10px;padding:7px 3px}.steps button.active{background:#dfbd8c22}.hidden{display:none!important}#quality{width:90px;font-size:10px;padding:7px}
@media(max-width:1050px){aside{width:260px;right:14px;padding:18px}header{left:18px}nav{left:18px}nav button{min-width:119px}#legend{left:18px}#toolbar{gap:7px;left:calc(50% - 50px)}#hint{left:calc(50% - 50px)}#status{display:none}}
@media(max-width:700px){header{left:13px;top:14px}header .serial{margin-top:17px;font-size:8px;letter-spacing:1.5px}h1{font-size:18px;margin:8px 0}header p{display:none}nav{top:137px;left:10px;gap:6px}nav button{min-width:86px;font-size:10px;padding:9px 8px}nav button small{font-size:8px;letter-spacing:1px;margin-bottom:4px}aside{top:13px;right:10px;width:230px;max-height:calc(100dvh - 160px);padding:17px}#fold{display:block;position:absolute;right:7px;top:7px;padding:2px 6px}.folded{width:137px;padding:13px}.folded>*:not(h2):not(#fold){display:none}.folded h2{font-size:15px;margin:4px 17px 4px 0}#toolbar{left:50%;bottom:10px;max-width:calc(100vw - 20px);width:440px;flex-wrap:wrap;justify-content:center;gap:7px;padding:10px}#toolbar button{padding:6px 9px;font-size:10px}#hint{left:50%;bottom:115px;font-size:9px}#legend{left:12px;bottom:145px;font-size:9px;max-width:130px}#speed{width:65px}#quality{width:72px}#tooltip{display:none!important}#status{display:none}}

body{background:radial-gradient(ellipse at 43% 42%,#111e30,#050b14 65%,#03070c)}#fold{display:block;position:absolute;right:7px;top:7px;padding:2px 6px}aside.folded{width:155px;padding:13px}aside.folded>*:not(h2):not(#fold){display:none!important}aside.folded h2{font-size:16px;line-height:1.45;margin:5px 17px 5px 0;max-height:48px;overflow:hidden}#hud{position:fixed;left:27px;bottom:115px;z-index:2;width:172px;border:1px solid var(--line);border-radius:7px;padding:15px;background:#0e1928de;text-align:center}#hud canvas{display:block;width:126px;height:126px;margin:10px auto}#hud .hudTitle{font:9px Georgia,serif;letter-spacing:2px;color:var(--accent)}#hud strong{font-weight:400;font-size:14px;display:block;margin:8px 0}#hud .tiny{line-height:1.8}#hud .sunAngle{font-size:26px;color:var(--accent);margin:16px 0 7px}.dayBar{height:6px;background:#233446;border-radius:4px;overflow:hidden;margin:9px 0}.dayBar i{display:block;height:100%;background:#dabb84}.stateNote{font-size:10px;color:var(--accent);line-height:1.8;margin:12px 0}.tag{font-size:10px;border-left-width:1px}.tag.selected{color:var(--accent);border-left-width:2px}.scenario{width:100%;font-size:12px}.presetButtons button.active{background:#dfbd8c22;color:var(--accent)}#solarDay{font-size:11px;color:var(--muted);padding:10px 0}#selectedSpeed{color:var(--accent)}.solar nav{top:184px;gap:5px}.solar nav button{padding:8px 12px;min-width:115px}.solar nav button small{display:inline;margin:0 8px 0 0;font-size:8px}.solar #legend{max-width:140px}.solar .buttons button{font-size:11px}.simpleStats{font-size:11px;line-height:1.9;color:#a9becd}.seasonLegend{font-size:10px;color:var(--muted);line-height:1.8}.cameraNote{color:var(--accent);font-size:10px;line-height:1.8;margin-top:10px}#eclipseSweep{width:100%;margin-top:6px}.solar #toolbar{left:calc(50% - 65px)}.phaseButtons{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}.phaseButtons button{padding:7px 3px;font-size:10px}#timeUnit{font-size:9px;color:var(--muted);max-width:94px;white-space:normal;text-align:center}
.earth-system #legend{display:none}
@media(max-width:1050px){#hud{left:18px;width:150px;padding:12px}#hud canvas{width:112px;height:112px}.solar #toolbar{left:calc(50% - 45px)}}
@media(max-width:700px){aside.folded{width:136px}aside.folded h2{font-size:14px;max-height:42px}#hud{left:12px;bottom:155px;width:125px;padding:10px}#hud canvas{width:86px;height:86px;margin:8px auto}#hud strong{font-size:12px}#hud .tiny{font-size:9px}.solar nav{top:auto;bottom:122px;left:10px;right:10px;flex-direction:row;overflow-x:auto;padding:6px 0;max-width:calc(100vw - 20px);scrollbar-width:thin;gap:5px}.solar nav button{min-width:58px;padding:9px 7px;flex-shrink:0;text-align:center;white-space:nowrap}.solar nav button small{display:none}.solar #legend{display:none}.solar #toolbar{left:50%}#hint{bottom:112px}.solar #hint{bottom:176px;font-size:8px}#hud .sunAngle{font-size:22px}.presetButtons{gap:5px}#timeUnit{max-width:80px}.solar header h1{max-width:210px}}