:root{color:#172431;font-synthesis:none;text-rendering:optimizelegibility;--night:#091725;--rail:#102538;--signal:#69d6e8;--decision:#e9af45;--paper:#f3ecde;--paper-rule:#c8beac;--muted:#536b7c;--ink:#172431;--danger:#a23b36;background:#091725;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:var(--night);min-width:320px;min-height:100vh;margin:0}button,input,select{min-height:44px;font:inherit;border:1px solid;border-radius:0}button{color:#e9f0f2;cursor:pointer;background:0 0;padding:.62rem .8rem}button:hover:not(:disabled){color:var(--signal);border-color:var(--signal)}button:disabled{opacity:.62;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--decision);outline-offset:3px}input,select{width:100%;color:var(--ink);background:#fffdf7;border-color:#8795a0;padding:.62rem .7rem}#app{min-height:100vh}.app-shell{gap:.8rem;min-height:100vh;padding:.8rem;display:grid}.console-rail,.briefing-pane{min-width:0}.arrival-console{position:relative}.arrival-console:before{content:"";pointer-events:none;border:1px solid #69d6e857;border-radius:50%;width:9rem;height:9rem;animation:8s ease-in-out infinite signal-pulse;position:absolute;top:-4.5rem;right:-4rem;box-shadow:0 0 0 .65rem #69d6e80f,0 0 2rem #69d6e829}.console-rail{color:#d9e5e9;background:var(--rail);border:1px solid #34546b;padding:1rem}.briefing-pane{color:var(--ink);border:1px solid var(--paper-rule);background:var(--paper);padding:clamp(1.1rem,3vw,2.4rem)}.briefing-pane>h2{letter-spacing:-.025em;max-width:36rem;margin:0;font:700 clamp(1.7rem,4vw,2.5rem)/1.05 Georgia,Times New Roman,serif}.briefing-pane>h2+p{max-width:42rem;color:var(--muted);font:1.05rem/1.65 Georgia,Times New Roman,serif}.course-navigation{border-bottom:1px solid #34546b;grid-template-columns:1fr;gap:0;margin:-1rem -1rem 1rem;display:grid}.course-navigation button{text-align:left;border-width:0 0 0 3px;border-color:#0000;width:100%}.course-navigation button[aria-pressed=true]{color:var(--signal);border-left-color:var(--signal);background:#0c1d2d}.arrival-console>h1,.arrival-console>h2,.atlas>h1,.methodology>h1,.mission-card h1,.briefing-stage h2,.supported-alternatives h2{letter-spacing:-.025em;margin:0;font-family:Georgia,Times New Roman,serif}.arrival-console>h1,.arrival-console>h2{color:#fff9ee;font-size:clamp(2rem,5vw,3.15rem);line-height:.98}.arrival-intro,.field-hint{color:#aec2cc;line-height:1.55}.arrival-intro{max-width:33rem;margin:.75rem 0 1.25rem}.year-field{gap:.45rem;display:grid}.year-field label,.era-controls legend,.atlas-controls label{font-weight:700}.field-hint{margin:0;font-size:.9rem}.timeline-control{gap:.35rem;margin-top:1.2rem;display:grid}.timeline-control>label{color:#d9e5e9;font-weight:700}.timeline-output{color:var(--signal);font:700 1.35rem/1 Georgia,Times New Roman,serif}.timeline-control input[type=range]{width:100%;height:2.75rem;accent-color:var(--signal);cursor:ew-resize;appearance:none;background:0 0;border:0;padding:0}.timeline-control input[type=range]::-webkit-slider-runnable-track{background:#29485e;border:1px solid #53768a;height:.45rem}.timeline-control input[type=range]::-webkit-slider-thumb{background:var(--signal);appearance:none;border:2px solid #06141f;border-radius:50%;width:1.25rem;height:1.25rem;margin-top:-.48rem;box-shadow:0 0 0 .3rem #69d6e826,0 0 1.1rem #69d6e894}.timeline-control input[type=range]::-moz-range-track{background:#29485e;border:1px solid #53768a;height:.45rem}.timeline-control input[type=range]::-moz-range-thumb{background:var(--signal);border:2px solid #06141f;border-radius:50%;width:1rem;height:1rem;box-shadow:0 0 0 .3rem #69d6e826,0 0 1.1rem #69d6e894}.timeline-scale{color:#aec2cc;justify-content:space-between;font-size:.78rem;display:flex}.arrival-actions{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:.5rem;margin-top:1rem;display:grid}.arrival-actions button{min-width:0}.random-button{color:#d9e5e9;border-color:#53768a}.random-button:hover:not(:disabled){color:var(--signal);border-color:var(--signal);background:#0c1d2d}.era-controls{border:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem;margin:1.1rem 0;padding:0;display:grid}.era-controls legend{grid-column:1/-1;margin-bottom:.15rem}.era-controls button[aria-pressed=true]{color:#06141f;border-color:var(--signal);background:var(--signal)}.generate-button{color:#281800;border-color:var(--decision);background:var(--decision);width:100%;font-weight:800}.generate-button:hover:not(:disabled){color:#281800;background:#f5ca73;border-color:#f5ca73}.arrival-alert,.arrival-status{min-height:1.5rem;margin:1rem 0 0;line-height:1.5}.arrival-alert{color:#ffb3a7}.arrival-status{color:var(--signal)}.gap-actions,.era-jumps{gap:.45rem;margin-top:1rem;display:grid}.gap-actions button{color:#d9e5e9;text-align:left}.era-jumps{border-top:1px solid #34546b;grid-template-columns:repeat(2,minmax(0,1fr));padding-top:1rem}.era-jumps p{color:#aec2cc;grid-column:1/-1;margin:0 0 .15rem;font-size:.85rem;font-weight:700}.historical-briefing,.atlas,.methodology{gap:clamp(1.25rem,3vw,2.25rem);max-width:72rem;display:grid}.mission-card{border-bottom:3px solid var(--signal);padding-bottom:1.25rem;animation:.52s cubic-bezier(.22,1,.36,1) both briefing-reveal}.mission-card h1{max-width:21ch;font-size:clamp(2.1rem,5vw,4.25rem);line-height:.96}.mission-destination{color:#075c6c;margin:1rem 0 .2rem;font-weight:800}.mission-destination+p,.atlas>p,.methodology>p{color:var(--muted);margin:0;line-height:1.5}.briefing-stage,.supported-alternatives,.methodology section{border-left:1px solid var(--paper-rule);padding-left:clamp(.9rem,2vw,1.5rem)}.briefing-stage h2,.supported-alternatives h2,.methodology h2,.atlas-card h2{font-size:clamp(1.35rem,2.5vw,1.85rem);line-height:1.12}.briefing-stage h3,.supported-alternatives h3{margin:1.25rem 0 .4rem;font-size:1rem}.briefing-stage p,.briefing-stage li,.supported-alternatives p,.supported-alternatives li,.methodology section p,.atlas-card p{max-width:72ch;line-height:1.62}.briefing-stage dl{grid-template-columns:minmax(7rem,auto) minmax(0,1fr);gap:.45rem 1rem;display:grid}.briefing-stage dt{color:#40596b;font-weight:800}.briefing-stage dd{margin:0}.briefing-stage ul,.supported-alternatives ul{gap:.75rem;padding-left:1.2rem;display:grid}.briefing-stage a{color:#075c6c;text-underline-offset:.16em;text-decoration-thickness:2px}.lesson-choices{gap:.5rem;max-width:42rem;display:grid}.lesson-choices button,.lesson button[data-reset]{color:var(--ink);text-align:left;background:#fffaf0;border-color:#82909a}.lesson-choices button:hover:not(:disabled),.lesson button[data-reset]:hover:not(:disabled){color:#063f4b;border-color:#075c6c}.lesson-feedback{color:#075c6c;max-width:64ch;min-height:1.5rem;font-weight:700;line-height:1.55}.completion-stamp{color:#075c6c;border:1px solid #075c6c;width:fit-content;margin:.75rem 0 0;padding:.35rem .55rem;font-weight:800;display:inline-block}.atlas>h1,.methodology>h1{font-size:clamp(2rem,5vw,3.35rem);line-height:.98}.atlas-controls{border-top:1px solid var(--paper-rule);border-bottom:1px solid var(--paper-rule);gap:.8rem;padding:1rem 0;display:grid}.atlas-controls>div{gap:.35rem;display:grid}.atlas-status,.atlas-empty{margin:0;line-height:1.5}.atlas-status{color:#075c6c;font-weight:800}.atlas-empty{color:var(--danger)}.atlas-results{gap:0;display:grid}.atlas-card{border-bottom:1px solid var(--paper-rule);grid-template-columns:1fr;gap:.45rem;padding:1.1rem 0;display:grid}.atlas-card h2{margin:0;font-family:Georgia,Times New Roman,serif}.atlas-card p{color:var(--muted);margin:0}.atlas-card button{color:#075c6c;background:0 0;border-color:#075c6c;align-self:start;width:fit-content;margin-top:.35rem}.atlas-card button:hover:not(:disabled){color:#fffdf7;background:#075c6c}.methodology section h2{margin:0 0 .45rem;font-family:Georgia,Times New Roman,serif}.methodology section p{margin:0}@media (width<=799px){.arrival-console>form{z-index:4;background:var(--rail);border-bottom:1px solid #34546b;margin-inline:-1rem;padding:.7rem 1rem;position:sticky;top:0}}@media (width>=800px){.app-shell{grid-template-columns:clamp(22rem,28vw,28rem) minmax(0,1fr);gap:1.25rem;padding:1.25rem}.console-rail,.briefing-pane{height:calc(100vh - 2.5rem);overflow:auto}.console-rail{position:sticky;top:1.25rem}.atlas-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.atlas-card{grid-template-columns:minmax(0,1fr) auto;column-gap:2rem}.atlas-card h2,.atlas-card p,.atlas-card .completion-stamp{grid-column:1}.atlas-card button{grid-area:1/2/span 3;align-self:center}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.arrival-console:before,.mission-card{animation:none!important}}@keyframes signal-pulse{0%,to{opacity:.5;transform:scale(.94)}50%{opacity:.95;transform:scale(1.04)}}@keyframes briefing-reveal{0%{opacity:0;transform:translateY(.7rem)}to{opacity:1;transform:translateY(0)}}
