:root{color-scheme:dark;--bg:#101622;--surface:#182233;--line:#38475d;--ink:#eff5fb;--muted:#b1c0d2;--accent:#9df2c9;font:16px/1.55 system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}header,footer{padding:1rem clamp(1rem,5vw,4rem);display:flex;align-items:center;gap:1.5rem;border-bottom:1px solid var(--line)}footer{border-top:1px solid var(--line);border-bottom:0}a{color:var(--accent)}.brand{color:var(--ink);font-weight:750;text-decoration:none}main{max-width:1400px;margin:auto;padding:clamp(1rem,4vw,3rem)}.intro{margin-bottom:1.6rem}.eyebrow{color:var(--accent);font-size:.75rem;font-weight:750;letter-spacing:.13em}h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.09;max-width:22ch;margin:.4rem 0}h2{font-size:1.18rem;margin:0 0 .65rem}p{margin:.4rem 0 .7rem;color:var(--muted)}nav,.controls,.heading{display:flex;gap:.55rem;flex-wrap:wrap;align-items:center}.heading{justify-content:space-between;margin-bottom:.6rem}button,select,input,textarea{font:inherit;color:inherit;background:#111c2b;border:1px solid var(--line);border-radius:.5rem;padding:.48rem .72rem}button{cursor:pointer}button:hover,button[aria-current=true],button[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.55;cursor:default}.primary{background:var(--accent);color:#112619;border-color:var(--accent);font-weight:700}.primary:hover{color:#112619;background:#c6f8df}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.skip{position:absolute;left:1rem;top:-10rem}.skip:focus{top:1rem;background:var(--bg);z-index:3}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}#status{min-height:1.5em}.mission{border-left:3px solid var(--accent);padding:.1rem 1rem;margin-bottom:1rem}summary{cursor:pointer;color:var(--accent)}.card{background:var(--surface);border:1px solid var(--line);border-radius:.8rem;padding:1rem;min-width:0}.work-grid,.trace-grid,.input-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1rem}.input-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin:.7rem 0}textarea,pre{font: .88rem/1.55 ui-monospace,monospace}textarea{display:block;width:100%;min-height:8rem;resize:vertical;margin:.35rem 0 .65rem}#editor{height:22rem;white-space:pre;overflow:auto;tab-size:2}#preview{display:flex;justify-content:center;background:#0c1320;border-radius:.55rem;overflow:hidden}iframe{border:0;width:100%;height:27rem;background:#fff}#preview.phone iframe{max-width:375px}.trace{margin-top:1rem}.trace ol{max-height:22rem;overflow:auto;margin:.4rem 0;padding-left:1.9rem}.trace li{margin:.25rem 0}.trace li button{text-align:left}.trace pre,pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:.4rem 0;color:#d1e8f8}#items{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr));gap:.55rem;max-height:27rem;overflow:auto}#items button{text-align:left}#decision{margin-top:1rem}.table-wrap{overflow:auto;margin-top:.7rem}table{border-collapse:collapse;width:100%;text-align:left}th,td{padding:.35rem .6rem;border-bottom:1px solid var(--line)}[hidden]{display:none!important}@media(max-width:760px){.work-grid,.trace-grid,.input-grid{grid-template-columns:1fr}#editor{height:16rem}}