:root{color-scheme:light;--paper:#f4f2eb;--ink:#222720;--muted:#616a5b;--line:#d8dbd0;--green:#244b34;--lime:#d2f088;--warm:#785414}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.55}button,input,select,textarea{font:inherit}a{color:var(--green);text-underline-offset:3px}button,a,input,textarea,select,summary{touch-action:manipulation}button,.button,summary{cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #7b9c32;outline-offset:3px}[hidden]{display:none!important}.wrap{width:min(1220px,calc(100% - 64px));margin:auto}.skip{position:absolute;top:-100px;left:20px;background:white;padding:10px;z-index:10}.skip:focus{top:10px}header{display:flex;justify-content:space-between;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}.brand{font-size:29px;font-weight:800;letter-spacing:-1.5px;text-decoration:none;color:var(--ink)}.brand span{color:#6b8c31}nav{display:flex;gap:25px;font-size:13px;font-weight:600}nav a{text-decoration:none}.hero{display:grid;grid-template-columns:1.45fr 1fr;gap:60px;align-items:center;padding:65px 0 48px}.eyebrow{text-transform:uppercase;letter-spacing:1.8px;font-size:11px;font-weight:700;color:var(--muted);margin:0 0 16px}h1{font-size:clamp(36px,4.2vw,57px);line-height:1.08;letter-spacing:-2px;margin:0 0 25px;font-weight:650}h1 em{font-family:Georgia,serif;font-weight:500;color:var(--green)}.deck{font-size:18px;max-width:590px;color:var(--muted);margin:0}.flow-card{background:var(--green);color:white;padding:29px 32px;border-radius:3px}.flow-card .eyebrow{color:var(--lime)}.flow-card ol{list-style:none;margin:23px 0;padding:0}.flow-card li{display:flex;gap:16px;margin:18px 0}.flow-card b{color:var(--lime);font:15px monospace;padding-top:3px}.flow-card small{display:block;color:#c5d0c6;font-size:12px;margin-top:3px}.local-dot{font-size:12px;border-top:1px solid #52745d;padding-top:15px;margin:0}.local-dot:before{content:'●';color:var(--lime);margin-right:8px}.panel{background:#fffef9;border:1px solid var(--line);padding:28px;border-radius:4px}h2{font-size:26px;line-height:1.2;letter-spacing:-.65px;margin:0 0 16px}h3{font-size:15px;margin:0 0 10px}p{margin:0 0 14px}.import-panel{display:grid;grid-template-columns:1.3fr 1fr;column-gap:50px}.import-panel p{font-size:14px;max-width:620px;color:var(--muted)}.import-actions{display:flex;flex-wrap:wrap;gap:10px;align-content:center}.button,.secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:3px;font-size:13px;font-weight:700;text-decoration:none;border:1px solid var(--green);line-height:1.4}.button{background:var(--green);color:white}.secondary{background:transparent;color:var(--green)}.button:hover{background:#193c27}.secondary:hover{background:#e8eddf}.file-button{position:relative;overflow:hidden;cursor:pointer;margin:0!important}.file-button input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.file-button:focus-within{outline:3px solid #7b9c32;outline-offset:3px}.hint{font-size:12px!important;color:var(--muted);line-height:1.5;margin:10px 0 0}.import-actions .hint{width:100%;margin-top:0}.paste{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;margin-top:15px}summary{font-size:13px;font-weight:600}details[open]>summary{margin-bottom:15px}.paste label{margin-top:15px}.paste button{margin-top:10px}#import-status{grid-column:1/-1;margin:10px 0 0}#import-status.error{color:#a23824}.workspace-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:40px 0 20px}.workspace-heading h2{margin:0;overflow-wrap:anywhere}.workspace-heading .eyebrow{margin-bottom:8px}.chip{border:1px solid var(--line);padding:5px 10px;font-size:12px;white-space:nowrap}.workspace{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(280px,1fr);gap:20px;align-items:start}label{display:block;font-size:13px;font-weight:600;margin:0 0 8px}input[type=text],select,textarea{width:100%;border:1px solid #c4cbbd;border-radius:3px;padding:10px 11px;background:#fff;color:var(--ink)}textarea{resize:vertical;min-height:80px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;line-height:1.65;tab-size:2}select{font-size:13px;text-overflow:ellipsis}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px}.selectors{margin:24px 0}.branch{display:flex;align-items:center;gap:10px;margin:8px 0 0}.branch label{margin:0;font-weight:400;font-size:12px}.branch input{width:65px;padding:5px;border:1px solid #c4cbbd;border-radius:3px;font-size:12px}.origin{font-size:10px;color:var(--muted);font-weight:400;display:block;min-height:15px}.snapshot-note{padding:12px 14px;border-left:3px solid #a7bf78;background:#eff3e8;font-size:12px;color:var(--green);margin:20px 0}#mock-section{border-top:1px solid var(--line);padding-top:18px}#mock-section p,#mock-section a{font-size:12px}#mock-section textarea{margin-bottom:8px}.readiness h2{font-size:23px}.readiness>p{font-size:13px;color:var(--muted)}.readiness.ready{border-top:4px solid var(--green)}.readiness.pending{border-top:4px solid #bf9857}#issues{padding:0;list-style:none;margin:18px 0}#issues li{background:#f9f0dd;border-left:2px solid #bf9857;padding:10px;font-size:12px;margin-bottom:8px;overflow-wrap:anywhere}.slice{padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:18px 0}.slice p{font-size:12px;overflow-wrap:anywhere}.slice h3{font-size:13px}#slice-nodes{margin:0}#omitted-section{margin-top:12px}#omitted-section summary{font-size:12px}.downloads{display:flex;flex-direction:column;gap:9px;margin:22px 0 10px}.readiness>details{margin-top:20px}pre{white-space:pre-wrap;word-break:break-word;overflow:auto;font:12px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;background:#edf0e8;padding:14px;border-radius:3px}#preview{max-height:420px}code{font:12px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere}.run-panel{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;margin:20px 0}.run-panel p,.run-panel li{font-size:13px}.run-panel ol{padding-left:20px}.run-panel li{margin-bottom:10px}.run-panel>div+div{border-left:1px solid var(--line);padding-left:30px}.service{display:flex;justify-content:space-between;align-items:center;gap:45px;margin:55px 0 45px;padding-top:30px;border-top:1px solid var(--line)}.service p{max-width:690px;font-size:14px;color:var(--muted)}.service .button{flex-shrink:0}footer{border-top:1px solid var(--line);padding:22px 0 30px;display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:12px}footer details{flex-basis:100%}footer summary{font-size:12px;font-weight:400}footer p{max-width:800px;margin-top:10px}
@media(max-width:900px){.wrap{width:calc(100% - 40px)}.hero{gap:28px;padding-top:40px;grid-template-columns:1.2fr 1fr}.flow-card{padding:22px}.workspace{grid-template-columns:1fr}.readiness{display:block}.downloads{flex-direction:row;flex-wrap:wrap}.import-panel{gap:20px}.run-panel{gap:25px}.service{gap:25px}}
@media(max-width:600px){.wrap{width:calc(100% - 28px)}header{padding:17px 0}nav{gap:14px;font-size:11px}.brand{font-size:25px}.hero{grid-template-columns:1fr;gap:25px;padding:34px 0 25px}h1{font-size:40px}.deck{font-size:16px}.flow-card{padding:22px}.flow-card ol{margin:10px 0 20px}.flow-card li{margin:12px 0}.panel{padding:20px}.import-panel,.two-col,.run-panel{grid-template-columns:1fr;gap:20px}.paste{margin-top:0}.import-actions{gap:9px}.import-actions .button,.import-actions .secondary{width:100%}.workspace-heading{align-items:start}.workspace-heading h2{font-size:23px}.chip{font-size:10px}.selectors{gap:17px}.readiness h2{font-size:24px}.run-panel>div+div{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.service{flex-direction:column;align-items:start;margin:40px 0 25px;gap:15px}.service h2{font-size:27px}footer{gap:15px}.downloads>*{width:100%}}

.stop-boundary{margin:-6px 0 24px;padding:12px 14px;border:1px solid var(--line);border-radius:3px}.stop-boundary label{display:flex;gap:9px;align-items:center;margin:0}.stop-boundary input{width:16px;height:16px;margin:0;flex-shrink:0}.stop-boundary .hint{margin-top:7px}

.assertion-controls{margin:0 0 22px;padding:14px;background:#eff3e8;border-radius:3px}.assertion-controls>div{margin-top:14px}#expected-count{width:120px;padding:9px;border:1px solid #c4cbbd;border-radius:3px}

.demo-panel{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;margin-bottom:24px}.demo-panel img{display:block;width:100%;height:auto;border:1px solid var(--line)}.demo-panel p{font-size:14px}.demo-panel .eyebrow{font-size:10px}.demo-panel pre{margin-bottom:10px}.demo-panel .hint{font-size:12px}.demo-panel h2{font-size:27px;line-height:1.2;margin:10px 0}.demo-panel .button{display:inline-block;text-decoration:none}
@media(max-width:750px){.demo-panel{grid-template-columns:1fr;gap:20px}.demo-panel h2{font-size:25px}}