:root{color-scheme:light;--ink:#19372a;--muted:#647268;--paper:#f8f8f1;--line:#dce2d7;--accent:#246b45;--soft:#e9efe5;--error:#aa3b32;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}button,a,textarea{touch-action:manipulation}button{font:inherit;cursor:pointer;border:1px solid #cbd6c8;color:var(--ink);background:white;border-radius:7px;padding:10px 13px;line-height:1.35;font-size:13px;font-weight:600}button:hover{border-color:var(--accent);background:#f4f7f1}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #82ac6a;outline-offset:4px}.primary{background:var(--accent);border-color:var(--accent);color:#fff}.primary:hover{background:#1b5537;color:white}.text-button{border-color:transparent;background:transparent}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}header{max-width:1220px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:28px 32px;gap:15px;font-size:13px}header a{text-decoration:none}.brand{font-size:20px;font-weight:800;letter-spacing:-.6px}.brand span{font-size:14px;font-weight:450;letter-spacing:-.1px;color:var(--muted);padding-left:10px}main{max-width:1220px;margin:auto;padding:0 32px}.intro{display:grid;grid-template-columns:1fr .8fr;align-items:center;gap:64px;padding:52px 0 58px}.eyebrow{font-size:10px;letter-spacing:1.5px;line-height:1.6;font-weight:750;margin:0 0 14px;color:var(--accent)}h1{font-size:clamp(44px,5.6vw,76px);letter-spacing:-3.5px;line-height:1.04;margin:0 0 22px;font-weight:750}.lead{font-size:18px;line-height:1.6;color:var(--muted);margin:0}.hero-code{border:1px solid var(--line);border-radius:14px;box-shadow:8px 10px 0 #e8eddf;background:#fff;padding:22px 28px;transform:rotate(1deg);max-width:420px}.window-dots{display:flex;gap:5px;padding-bottom:26px}.window-dots i{width:7px;height:7px;border-radius:50%;background:#cdd5ca}.code-comment{font:12px ui-monospace,SFMono-Regular,monospace;color:var(--muted);display:block;margin:0 0 18px}.hero-code code{font:clamp(18px,2vw,25px)/1.65 ui-monospace,SFMono-Regular,monospace;letter-spacing:-1px}.hero-code mark{background:#f8e8b8;color:inherit}.hero-code p{font:11px/1.7 ui-monospace,SFMono-Regular,monospace;margin:24px 0 0;color:var(--error);border-top:1px solid var(--line);padding-top:15px}.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:40px}.case-button{text-align:left;display:flex;align-items:center;gap:14px;padding:19px 18px;background:transparent;border-radius:10px;font-size:15px}.case-button[aria-pressed=true]{background:var(--soft);border-color:#799977}.case-num{width:32px;height:36px;display:grid;place-items:center;font:22px ui-monospace,SFMono-Regular,monospace;color:#8b9b86;flex-shrink:0}.case-button[aria-pressed=true] .case-num{color:var(--accent)}.case-button strong{display:block;font-size:15px;margin-bottom:4px}.case-button small{font-size:11px;color:var(--muted);font-weight:400}.case-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:22px}.case-heading .eyebrow{margin-bottom:6px}h2{font-size:28px;letter-spacing:-.8px;line-height:1.2;margin:0}h3{font-size:13px;margin:0;font-weight:650}.workbench{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.source-panel,.play-panel{min-width:0;border:1px solid var(--line);border-radius:10px;background:#fff;overflow:hidden}.panel-head{display:flex;justify-content:space-between;gap:8px;padding:16px 18px;align-items:center;border-bottom:1px solid var(--line)}.panel-head>span{font-size:11px;color:var(--muted)}.source-tools{display:flex;gap:5px;padding:8px 12px;border-bottom:1px solid var(--line);background:#fafbf7}.source-tools button{font-size:11px;padding:5px 9px;border:none;background:transparent}textarea{width:100%;height:352px;display:block;resize:vertical;border:none;outline:none;padding:18px;tab-size:2;font:12px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;color:#294837;background:#fdfefa;white-space:pre;overscroll-behavior:contain}textarea:focus{box-shadow:inset 0 0 0 2px #94b393}.editor-caption{font-size:10px;line-height:1.5;padding:9px 18px;margin:0;color:var(--muted);border-top:1px solid var(--line)}.actions{display:flex;flex-wrap:wrap;gap:6px;padding:12px;border-top:1px solid var(--line)}.hint{font-size:12px;line-height:1.6;margin:0;background:#edf4e9;border-bottom:1px solid var(--line);padding:12px 18px}.game-wrap{height:385px;background:#eef1e8}iframe{width:100%;height:100%;border:0;background:#eef1e8}.result{padding:14px 18px;min-height:65px;font:11px/1.65 ui-monospace,SFMono-Regular,monospace;border-top:1px solid var(--line);overflow-wrap:anywhere;background:#f6f8f2;white-space:pre-wrap}.result.error{color:var(--error);background:#fcf4f1}.result.ok{color:#246b45}.play-tools{padding:10px 12px 0;display:flex;gap:6px}.play-tools button{font-size:11px;padding:7px 10px}.caption{font-size:11px;line-height:1.65;color:var(--muted);margin:12px 18px 16px}.status[data-kind=error]{color:var(--error)}.status[data-kind=ok]{color:var(--accent)}details{border:1px solid var(--line);border-radius:9px;margin:20px 0 0;background:#fff}summary{padding:17px 19px;font-size:12px;font-weight:600;cursor:pointer}.evidence-body{border-top:1px solid var(--line);padding:22px;font-size:13px;line-height:1.7}.evidence-body>p{margin-top:0}.evidence-body pre{font:11px/1.7 ui-monospace,SFMono-Regular,monospace;max-height:400px;overflow:auto;background:#f4f6ef;padding:15px;border-radius:5px;white-space:pre;tab-size:2}.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;min-width:0}.evidence-grid>div{min-width:0}.evidence-grid pre{white-space:pre-wrap;overflow-wrap:anywhere}.evidence-grid .caption{margin-left:0;margin-right:0}.hashes{font:10px/1.8 ui-monospace,SFMono-Regular,monospace;overflow-wrap:anywhere;color:var(--muted)}.evidence-links{display:flex;gap:18px;flex-wrap:wrap;align-items:center;font-size:12px}.notes{display:grid;grid-template-columns:1fr 1fr;gap:40px;border-top:1px solid var(--line);padding:50px 0;margin:55px 0 0}.notes>div>p{font-size:13px;line-height:1.85;margin-top:0}.notes>div>.eyebrow{font-size:10px}.notes .caption{margin:15px 0 0;font-size:11px}footer{display:flex;flex-wrap:wrap;gap:22px;border-top:1px solid var(--line);padding:25px 0 35px;color:var(--muted);font-size:11px}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);max-width:90vw;background:var(--ink);color:#fff;border-radius:8px;font-size:12px;padding:12px 18px;box-shadow:0 3px 20px #0002;z-index:10}
@media(max-width:760px){header{padding:23px 20px}.brand{font-size:18px}.brand span{font-size:11px;padding-left:5px}header>a:last-child{font-size:11px}main{padding:0 20px}.intro{grid-template-columns:1fr;gap:30px;padding:28px 0 32px}h1{font-size:54px;letter-spacing:-2.8px}.lead{font-size:16px}.hero-code{display:none}.cases{gap:7px;margin-bottom:28px}.case-button{padding:11px 9px;display:block}.case-num{font-size:16px;width:auto;height:auto;display:block;margin:0 0 7px}.case-button strong{font-size:11px}.case-button small{font-size:9px;line-height:1.5;display:block}.case-heading h2{font-size:25px}.case-heading>button{font-size:10px;padding:8px}.workbench{grid-template-columns:1fr;gap:15px}.play-panel{grid-row:1}.game-wrap{height:390px}textarea{height:270px;font-size:11px}.panel-head{padding:14px 15px}.actions button{font-size:11px;padding:9px 10px}.notes{grid-template-columns:1fr;gap:20px;margin-top:35px;padding:30px 0}.notes h2{font-size:25px}.evidence-grid{grid-template-columns:1fr}.evidence-body{padding:15px}.evidence-links{gap:13px}footer{gap:16px}.source-tools{padding:7px 9px}.editor-caption{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}