:root{color-scheme:dark;--bg:#071a2b;--panel:#0b2338;--ink:#eef7f7;--muted:#93b6c7;--line:#264457;--cyan:#7dd4ee;--yellow:#ffdf7b;--warm:#eaa581;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 0 10%,#12364d 0,transparent 45%),var(--bg);color:var(--ink)}button,input,select{font:inherit}button,a,summary,input,select{-webkit-tap-highlight-color:transparent}button{min-height:44px;cursor:pointer;border:1px solid var(--line);color:var(--ink);background:transparent;border-radius:8px;padding:8px 13px}button:hover{border-color:var(--cyan);background:#ffffff08}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--yellow);outline-offset:4px}button:disabled{opacity:.36;cursor:default}a{color:inherit}button[hidden],[hidden]{display:none!important}.launch-site{max-width:1420px;margin:auto;padding:0 42px 24px}.topline{min-height:81px;display:flex;align-items:center;gap:22px;border-bottom:1px solid var(--line);font-size:14px}.topline .back{text-decoration:none;margin-right:auto}.topline>button{border:0;padding:8px 0}.heading{display:flex;justify-content:space-between;align-items:center;padding:29px 0 26px}.eyebrow{font-size:14px;letter-spacing:.14em;color:var(--cyan);margin:0 0 12px}h1{font-size:clamp(32px,4vw,53px);font-weight:550;letter-spacing:-.05em;line-height:1.16;margin:0}h1 span{color:var(--cyan)}.altitude-stamp{border-left:1px solid var(--line);padding-left:26px;display:grid;gap:6px;color:var(--muted);font-size:12px}.altitude-stamp strong{font:500 29px ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--ink)}.altitude-stamp small{font-size:13px}.flight-deck{display:grid;grid-template-columns:minmax(0,1fr) 330px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#071b2c;box-shadow:0 20px 70px #0002}.space-panel{min-width:0;position:relative;background:linear-gradient(150deg,#10334a66,#061523 70%)}.space-top{position:absolute;top:13px;left:20px;right:17px;display:flex;justify-content:space-between;align-items:center;gap:12px;z-index:2;font-size:12px;color:var(--muted)}.space-top button{font-size:12px;background:#0b263cd9;min-height:44px;padding:6px 10px}.flight-mode{display:flex;align-items:center;gap:7px}.flight-mode i{width:5px;height:5px;background:var(--cyan);border-radius:50%;box-shadow:0 0 12px var(--cyan)}#space-wrap{position:relative;height:486px;overflow:hidden}#space{display:block;width:100%;height:100%}#velocity-handle{position:absolute;width:44px;height:44px;min-height:44px;border:1px solid #fff5;background:var(--yellow);color:#082333;border-radius:50%;font-size:23px;line-height:1;padding:0;touch-action:none;cursor:ns-resize;transform:translate(-50%,-50%);box-shadow:0 0 0 6px #ffdf7b16,0 0 22px #ffdf7b15;z-index:3}#velocity-handle:hover{background:#ffe99d;box-shadow:0 0 0 9px #ffdf7b20}#velocity-handle:active{cursor:grabbing}#drag-label{position:absolute;font-size:11px;color:var(--yellow);pointer-events:none;white-space:nowrap;transform:translate(-50%,-50%);z-index:3}#offscreen{position:absolute;left:50%;bottom:36px;transform:translateX(-50%);width:max-content;max-width:90%;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#092439ec;font-size:11px;text-align:center}#offscreen span{display:block;color:var(--muted);margin-bottom:4px}#offscreen button{border:0;min-height:44px;padding:4px;color:var(--cyan)}.space-key{display:flex;justify-content:center;gap:20px;color:var(--muted);font-size:11px;padding:0 12px 18px}.space-key span{display:flex;align-items:center;gap:5px}.space-key i{width:15px;height:2px;background:var(--yellow);display:inline-block}.space-key .blue{background:var(--cyan)}.space-key .dashed{height:0;background:transparent;border-top:1px dashed #cfedf5}.flight-readings{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding:16px 12px}.flight-readings>div{padding:0 14px;display:grid;gap:7px}.flight-readings>div+div{border-left:1px solid var(--line)}.flight-readings span{font-size:11px;color:var(--muted)}.flight-readings strong{font:400 22px ui-monospace,SFMono-Regular,Consolas,monospace}.flight-readings small{font:11px system-ui}.controls{border-left:1px solid var(--line);padding:25px 23px;background:#102c40}.speed-title{display:flex;justify-content:space-between;align-items:center;font-size:14px}.speed-title output{font:500 30px ui-monospace,Consolas,monospace;color:var(--yellow)}.speed-title small{font:12px system-ui;color:var(--muted)}input[type=range]{width:100%;height:44px;cursor:pointer;margin:8px 0 0;accent-color:var(--yellow);background:transparent;touch-action:pan-y}.speed-ends{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:-8px}.presets{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin:19px 0 21px}.presets button{font-size:11px;padding:8px 2px;min-height:55px;background:#102435;line-height:1.5}.presets small{display:block;font:12px ui-monospace,Consolas,monospace;color:var(--muted);margin-top:3px}.presets button.active{border-color:var(--yellow);color:var(--yellow);background:#ffdf7b0a}.result{min-height:103px;border-left:2px solid var(--cyan);padding-left:12px;margin:0 0 19px}.result>span{font-size:10px;letter-spacing:.1em;color:var(--muted)}.result h2{font-size:21px;font-weight:500;margin:7px 0 5px}.result p{font-size:12px;color:var(--muted);line-height:1.6;margin:0}.main-actions{display:grid;grid-template-columns:1fr 75px;gap:8px}.primary{background:var(--yellow);border-color:var(--yellow);color:#102a3d;font-weight:650}.primary:hover{background:#ffeba5;border-color:#ffeba5}.primary span{padding-left:15px}.time-controls{display:flex;align-items:center;justify-content:space-between;gap:6px;margin:11px 0 18px}.time-controls label{font-size:11px;color:var(--muted)}select{border:1px solid var(--line);border-radius:6px;min-height:44px;max-width:90px;background:#0a2437;color:var(--ink);font-size:12px;padding:4px 5px}.time-controls button{font-size:11px;padding:6px 8px}details{border-top:1px solid var(--line);padding-top:4px}summary{cursor:pointer;list-style:none;font-size:12px;color:var(--cyan);min-height:44px;display:flex;align-items:center;justify-content:space-between}summary::-webkit-details-marker{display:none}summary span{font-size:20px}details[open] summary span{transform:rotate(45deg)}.direction-head{display:flex;justify-content:space-between;font-size:11px;margin-top:10px;color:var(--muted)}.direction-head output{color:var(--ink)}.direction-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin-top:-7px}#tangent{margin-top:10px;width:100%;font-size:11px}.compare-strip{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px 4px;color:var(--muted);font-size:12px}.compare-strip>div{display:flex;align-items:center;gap:10px}.compare-line{display:inline-block;flex-shrink:0;width:22px;border-top:2px dashed var(--warm)}.compare-strip button{border:0;font-size:11px;white-space:nowrap}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px;padding-top:5px}footer button{border:0;font-size:11px;padding-left:0}dialog{max-width:650px;max-height:85vh;background:#102c40;border:1px solid #3b6476;border-radius:14px;color:var(--ink);padding:27px;line-height:1.85}dialog::backdrop{background:#0009;backdrop-filter:blur(4px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--cyan);gap:15px}.dialog-head button{font-size:25px;border:0;width:44px;padding:0}dialog h2{font-size:24px;line-height:1.5}dialog h3{font-size:16px;margin-top:22px}dialog p{font-size:14px;color:#c1d3dc}dialog a{display:block;color:var(--cyan);font-size:13px;min-height:44px;padding:8px 0}.topline .exhibit-switcher-button{color:var(--cyan)}
@media(min-width:1440px){#space-wrap{height:520px}}@media(max-width:1000px){.launch-site{padding:0 24px 20px}.flight-deck{grid-template-columns:minmax(0,1fr) 290px}.controls{padding:23px 17px}.flight-readings strong{font-size:18px}.flight-readings>div{padding:0 9px}.space-key{gap:12px}.heading{padding:25px 0}.topline{gap:12px}}
@media(max-width:720px){.launch-site{padding:0 14px 16px}.topline{min-height:65px;gap:9px;font-size:11px;flex-wrap:wrap;padding:9px 0}.topline .back{line-height:1.5}.topline>button{font-size:11px}.heading{padding:18px 2px 17px;align-items:flex-end}.eyebrow{font-size:10px;letter-spacing:.07em;margin-bottom:9px}h1{font-size:31px;letter-spacing:-.065em}.altitude-stamp{padding-left:11px;gap:3px;font-size:9px}.altitude-stamp strong{font-size:20px}.altitude-stamp small{font-size:9px}.flight-deck{grid-template-columns:1fr;border-radius:11px}.space-top{top:8px;left:12px;right:10px;font-size:10px}.space-top button{min-height:44px;font-size:10px}#space-wrap{height:282px}.space-key{font-size:9px;padding-bottom:10px;gap:16px}.flight-readings{padding:10px 4px}.flight-readings>div{gap:4px;padding:0 10px}.flight-readings span{font-size:9px}.flight-readings strong{font-size:17px}.flight-readings small{font-size:9px}.controls{border-left:0;border-top:1px solid var(--line);padding:14px}.speed-title{font-size:12px}.speed-title output{font-size:26px}.controls input[type=range]{margin-top:2px}.presets{margin:11px 0 12px}.presets button{min-height:44px;font-size:10px;padding:5px 2px}.presets small{font-size:10px;margin-top:1px}.result{min-height:0;margin:0 0 13px;padding-left:10px}.result>span{font-size:9px}.result h2{font-size:19px;margin:4px 0}.result p{font-size:11px}.time-controls{margin:8px 0 10px}.time-controls label,.time-controls button,summary{font-size:11px}.compare-strip{font-size:10px;padding:9px 0;gap:6px}.compare-strip>div{gap:7px}.compare-strip button{font-size:10px;padding:4px 0}footer{flex-wrap:wrap;gap:0 10px;padding:6px 0;font-size:9px}footer>span:first-child{width:100%;padding-bottom:2px}footer>span:last-child{margin-left:auto}dialog{padding:20px;max-width:calc(100vw - 26px)}dialog h2{font-size:21px}dialog p{font-size:13px}#drag-label{font-size:10px}#offscreen{bottom:18px;font-size:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}