@font-face{font-family:Overpass;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/overpass-latin-400-normal-BpeLJ0bs.woff2)format("woff2"),url(/assets/overpass-latin-400-normal-c_C8zulu.woff)format("woff")}@font-face{font-family:Overpass;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/overpass-latin-600-normal-25RhTNCi.woff2)format("woff2"),url(/assets/overpass-latin-600-normal-DhYQrzaY.woff)format("woff")}@font-face{font-family:Overpass;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/overpass-latin-700-normal-CQX2QTgM.woff2)format("woff2"),url(/assets/overpass-latin-700-normal-BjBIVHw1.woff)format("woff")}@font-face{font-family:Fira Code;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/fira-code-latin-400-normal-DGosTW8U.woff2)format("woff2"),url(/assets/fira-code-latin-400-normal-C-QZfXAs.woff)format("woff")}:root{color:#f5f7fa;font-synthesis:none;--surface:#101a2b;--line:#2c3b53;--muted:#b2bfd2;--blue:#2e96f5;--red:#ef5258;background:#070c18;font-family:Overpass,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button,a{-webkit-tap-highlight-color:transparent}a{color:#77bdff;text-underline-offset:4px}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline-offset:4px;outline:3px solid #ffc978}button{color:#f5f7fa;background:#152138;border:1px solid #41516a;border-radius:3px;padding:9px 14px}input,select{color:#f5f7fa;background:#0b1322;border:1px solid #64748b;border-radius:3px;max-width:100%;min-height:42px;padding:9px 12px}input[type=range]{accent-color:var(--blue);cursor:pointer;width:100%;min-height:32px;padding:0}input[type=checkbox]{width:18px;min-height:18px;accent-color:var(--blue)}.header{border-bottom:1px solid var(--line);background:#070c18;align-items:center;gap:28px;min-height:86px;padding:18px 4vw;display:flex}.brand{letter-spacing:.8px;color:#f5f7fa;white-space:nowrap;align-items:center;gap:12px;font-size:21px;font-weight:700;text-decoration:none;display:flex}.header nav{align-items:center;gap:25px;margin-left:auto;display:flex}.header nav a{color:#bac7d8;border-bottom:2px solid #0000;padding:10px 0;font-size:15px;font-weight:600;text-decoration:none}.header nav a[aria-current=page]{color:#70bbff;border-bottom-color:#2e96f5}.header-mode{color:#bac7d8;border-left:1px solid var(--line);white-space:nowrap;padding-left:20px;font-size:12px}.page{max-width:1600px;min-height:70vh;margin:auto;padding:52px 4vw 70px}h1{letter-spacing:-1.6px;margin:0 0 20px;font-size:clamp(34px,4vw,60px);font-weight:700;line-height:1.08}h2{letter-spacing:-.5px;margin:0 0 16px;font-size:25px;line-height:1.25}h3{margin:0 0 10px;font-size:19px;line-height:1.3}p{color:#c0ccdc;margin:0 0 18px;font-size:16px;line-height:1.65}.lead{color:#cbd5e3;max-width:820px;font-size:21px;line-height:1.55}.red{color:var(--red)}.caption,small{color:var(--muted);font-size:12px;line-height:1.65}.mono{font-family:Fira Code,monospace;font-size:12px}.button{color:#fff;background:#166fc0;border:1px solid #4fa9fb;border-radius:3px;justify-content:center;align-items:center;min-height:48px;padding:13px 21px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.button:hover{background:#2181d4}.button.secondary{background:0 0;border-color:#61718a}.button.secondary:hover{background:#17243a}.page-heading{max-width:1000px;margin-bottom:38px}.section-label{text-transform:uppercase;letter-spacing:1.8px;color:#79bdff;font:12px Fira Code,monospace}.between,.inline,.section-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.inline{justify-content:flex-start}.section-heading{flex-wrap:wrap}.section-heading h2{margin:0}.skip-link{z-index:200;color:#000;background:#fff;padding:12px;position:fixed;top:8px;left:8px;transform:translateY(-200%)}.skip-link:focus{transform:none}.sr-only{clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:24px;padding:26px 4vw;font-size:12px;display:flex}.home{max-width:1600px;margin:auto;padding:0 4vw 35px}.home-intro{grid-template-columns:1fr 1fr;align-items:center;gap:5vw;min-height:600px;display:grid}.home-copy{z-index:1;padding:60px 0;position:relative}.home h1{letter-spacing:-4px;font-size:clamp(60px,7.5vw,112px);line-height:1}.home .lead{margin-top:28px;font-size:25px}.home-copy>p:not(.lead){max-width:450px}.home-actions{flex-wrap:wrap;gap:12px;margin:26px 0;display:flex}.text-link{margin-bottom:22px;display:inline-block}.home-moon{justify-content:center;align-items:center;min-height:480px;display:flex;position:relative}.moon-disc{aspect-ratio:1;background-image:url(/assets/moon-lroc-2k.jpg);background-position:50%;background-size:auto 100%;border-radius:50%;width:min(100%,490px);transform:rotate(-12deg);box-shadow:inset -110px -22px 95px 10px #03060edc}.home-moon>span{color:#9daec4;font:12px Fira Code,monospace;position:absolute;bottom:0;left:0}.home-directory{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin-bottom:25px;display:grid}.home-directory>a{color:inherit;padding:30px 25px 25px 0;text-decoration:none}.home-directory>a+a{border-left:1px solid var(--line);padding-left:30px}.home-directory span{color:#78bfff;margin-bottom:12px;font:12px Fira Code,monospace;display:block}.home-directory p{margin:0;font-size:15px}.mission-layout{grid-template-columns:340px 1fr;gap:60px;display:grid}.chapter-list{margin:0;padding:0;list-style:none}.chapter-list button{text-align:left;border:0;border-bottom:1px solid var(--line);background:0 0;gap:16px;width:100%;padding:19px 12px;display:flex}.chapter-list button[aria-current=step]{border-left:3px solid var(--blue);background:#11233c}.chapter-list small{margin-top:5px;display:block}.mission-task{padding:35px 0}.mission-task h2{max-width:720px;margin-top:20px;font-size:30px;line-height:1.45}.chapter-controls{flex-wrap:wrap;justify-content:flex-start;margin-top:65px}.data-status{color:#d2dbe7;background:#101a2b;border:1px solid #546479;margin-bottom:22px;padding:20px;font-size:14px}.data-status details{margin-top:10px}.compare-layout{grid-template-columns:250px minmax(0,1fr);gap:36px;display:grid}.setup{border-right:1px solid var(--line);padding-right:28px}.setup label{color:#c4cede;margin:22px 0 7px;font-size:13px;display:block}.setup select,.setup input{width:100%}.setup .caption{margin-top:18px}.comparison-content{flex-direction:column;gap:32px;min-width:0;display:flex}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:18px 14px}thead th{color:#bdc9db;font-size:12px;font-weight:400}tbody th{min-width:190px;font-weight:600}th small{margin-top:6px;font-weight:400;display:block}td{white-space:nowrap;font-family:Fira Code,monospace;font-size:13px}.decision{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 0}.decision>label{margin-bottom:15px;font-size:18px;display:block}.decision input{width:100px}.decision .inline span{color:var(--muted);font-size:13px}.decision ul{color:#c2cfe0;padding-left:20px;font-size:14px;line-height:1.8}.chart-section{background:#0c1423;padding:24px 18px}.horizon-chart svg{width:100%;margin-top:20px}.horizon-chart text{fill:#c1cde0;font:12px Overpass,sans-serif}.horizon-chart .caption{margin-bottom:4px}.timeline{border-top:1px solid var(--line);padding-top:25px}.timeline .section-heading{margin-bottom:20px}.track-row{grid-template-columns:120px 1fr;align-items:center;gap:18px;margin:10px 0;font-size:13px;display:grid}.track-row svg{width:100%;height:25px}.timeline>.between{flex-wrap:wrap;font-size:11px}.prose{max-width:1050px}.prose section{border-bottom:1px solid var(--line);padding:28px 0}.prose p,.prose li{color:#c0ccdc;line-height:1.8}.prose li{margin:10px 0}.prose details{padding:16px 0}.prose pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#101a2b;padding:20px;font:12px/1.8 Fira Code,monospace}.source{padding:17px 0}.source p{margin:0}.credit-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;display:grid}.credit-list article{border-bottom:1px solid var(--line);overflow-wrap:anywhere;min-width:0;padding:22px 0}.credit-list article>a{margin-right:15px;font-size:13px}.validation-list article{border-bottom:1px solid var(--line);padding:24px 0}.test-status{text-transform:uppercase;border:1px solid #7c8ea5;margin-bottom:12px;padding:5px 9px;font:11px Fira Code,monospace;display:inline-block}.test-status.pass{color:#a1e0c5;border-color:#498774}.test-status.fail{color:#ffb6b9;border-color:#bd6069}.warning{color:#ffe0bf;background:#2d211b;border:1px solid #886346;padding:18px;font-size:14px;line-height:1.6}.simulator-page{max-width:1800px;margin:auto;padding:35px 4vw 50px}.sim-top{justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px;display:flex}.sim-top h1{margin-bottom:8px;font-size:42px}.sim-top p{margin:0}.sim-toolbar{flex-wrap:wrap;align-items:center;gap:25px;padding-bottom:20px;display:flex}.segmented{gap:4px;display:flex}.segmented button[aria-pressed=true]{background:#1267ad;border-color:#59b3ff}.sim-toolbar label{color:#bac7d8;font-size:13px}.freeze-controls{flex-wrap:wrap;gap:12px 22px;margin-top:15px;display:flex}.freeze-controls label{align-items:center;gap:8px;font-size:12px;display:flex}.freeze-controls button{font-size:12px}.free-notice{margin-bottom:20px}.scene-frame{border:1px solid var(--line);background:#050911;height:540px;position:relative;overflow:hidden}.space-canvas{width:100%;height:100%}.space-canvas canvas{width:100%;height:100%;display:block}.scene-caption{color:#c2cddd;pointer-events:none;max-width:70%;font-size:11px;line-height:1.7;position:absolute;bottom:18px;left:20px}.camera-controls{gap:5px;display:flex;position:absolute;bottom:18px;right:18px}.camera-controls button{background:#0a1425e8;padding:9px 11px;font-size:11px}.scene-pending,.scene-error,.scene-loading{background:#101a2be6;max-width:80%;padding:15px;font-size:14px;position:absolute;top:20px;left:25px}.sim-bottom{padding-top:24px}.playback{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:22px;display:flex}.playback label{font-size:13px}.return-workspace{z-index:110;background:#1267ad;border-color:#7ec3ff;min-height:48px;font-size:16px;font-weight:600;position:absolute;top:25px;right:25px}.immersive .scene-frame{z-index:100;border:0;width:100vw;height:100dvh;position:fixed;inset:0}.immersive-warning{color:#ffe0bf;background:#2d211bdf;max-width:45%;padding:10px;font-size:12px;position:absolute;top:25px;left:25px}.immersive .scene-caption,.immersive .camera-controls{display:none}.immersive-active{overflow:hidden}.immersive .sim-top,.immersive .sim-toolbar,.immersive .sim-bottom,.immersive .free-notice,body.immersive-active>.header{visibility:hidden}@media (width<=1100px){.header{flex-wrap:wrap;gap:12px}.header nav{order:3;gap:22px;width:100%;margin:0;overflow-x:auto}.header-mode{margin-left:auto}.home-intro{gap:30px;min-height:530px}.home-moon{min-height:370px}.home h1{font-size:80px}.compare-layout{grid-template-columns:220px minmax(0,1fr);gap:22px}.mission-layout{grid-template-columns:290px 1fr;gap:30px}}@media (width<=720px){.header{padding:16px 20px}.brand{font-size:17px}.header nav{gap:22px}.header nav a{white-space:nowrap;font-size:13px}.header-mode{padding-left:10px;font-size:10px}.page,.simulator-page{padding:32px 20px 45px}.page-heading{margin-bottom:26px}h1{letter-spacing:-1px}.lead{font-size:18px}.home{padding:0 20px 25px}.home-intro{flex-direction:column;align-items:stretch;gap:0;display:flex}.home-copy{padding:42px 0 15px}.home h1{letter-spacing:-3px;font-size:76px}.home .lead{font-size:22px}.home-actions{flex-direction:column;align-items:stretch}.home-moon{min-height:280px;max-height:330px;padding-bottom:35px}.moon-disc{width:250px}.home-directory{grid-template-columns:1fr;margin-top:20px}.home-directory>a,.home-directory>a+a{border-left:0;border-bottom:1px solid var(--line);padding:24px 0}.home-directory>a:last-child{border-bottom:0}.compare-layout,.mission-layout{grid-template-columns:1fr}.setup{border-right:0;border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;gap:7px 16px;padding:0 0 25px;display:grid}.setup h2,.setup>p{grid-column:1/-1}.setup label{align-self:center;margin:10px 0 0}.setup input,.setup select{margin-top:5px}.chapter-list{gap:8px;display:flex;overflow-x:auto}.chapter-list li{min-width:180px}.chapter-list button{height:100%;padding:12px;font-size:12px}.chapter-list small{font-size:10px}.mission-task{padding:15px 0}.mission-task h2{font-size:25px}.chapter-controls{margin-top:30px}.credit-list{grid-template-columns:1fr}.track-row{grid-template-columns:85px 1fr;gap:8px;font-size:11px}.section-heading h2{font-size:22px}.timeline .between span:nth-child(2){text-align:center;order:3;width:100%}.sim-top{flex-direction:column;align-items:flex-start}.sim-top h1{font-size:36px}.sim-toolbar{gap:15px}.sim-toolbar .inline{justify-content:space-between;width:100%}.scene-frame{height:440px}.scene-caption{max-width:90%;font-size:10px;bottom:65px;left:12px}.camera-controls{bottom:12px;right:12px}.return-workspace{font-size:14px;top:15px;right:15px}.immersive-warning{max-width:80%;top:80px;left:15px}.footer{gap:16px;padding:24px 20px}.decision .inline{align-items:flex-start}.prose pre{padding:14px;font-size:10px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.immersive-active .header,.immersive-active .footer,.immersive-active .skip-link{visibility:hidden}.event-mark{align-items:center;padding:14px 18px;display:inline-flex}.event-mark img{object-fit:contain;max-width:100%;height:auto}.footer{align-items:center}.mission-journal{flex-direction:column;gap:12px;margin-top:32px;display:flex}.mission-journal>label{font-size:15px}.mission-journal textarea{font:inherit;color:#f5f7fa;resize:vertical;background:#0b1322;border:1px solid #64748b;border-radius:3px;width:100%;padding:12px;line-height:1.6}.mission-journal .caption{margin:0}.mission-journal textarea:focus-visible{outline-offset:4px;outline:3px solid #ffc978}