/* Independent teaching labs. Scope every selector to avoid changing the blog. */
#lab-app{--lab-paper:var(--paper,#f6f7f2);--lab-ink:var(--ink,#142721);--lab-muted:var(--muted,#68756c);--lab-accent:var(--accent,#276951);--lab-line:var(--line,#dbe3d8);width:min(1160px,calc(100% - 40px));margin:0 auto 76px;color:var(--lab-ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.7;overflow-wrap:anywhere}
#lab-app *,#lab-app *::before,#lab-app *::after{box-sizing:border-box}
#lab-app h1,#lab-app h2,#lab-app h3,#lab-app p{margin-top:0}
#lab-app h1{max-width:820px;font-size:clamp(30px,4.5vw,54px);line-height:1.2;letter-spacing:-.04em;margin-bottom:20px;font-weight:650}
#lab-app h2{font-size:19px;line-height:1.5;letter-spacing:-.02em;margin-bottom:0;font-weight:650}
#lab-app h3{font-size:12px;letter-spacing:.06em;color:var(--lab-muted);margin:0 0 7px}
#lab-app p{margin-bottom:14px;max-width:none;color:inherit;line-height:inherit}
#lab-app button,#lab-app input,#lab-app select{font:inherit}
#lab-app button,#lab-app a,#lab-app input,#lab-app select,#lab-app summary{-webkit-tap-highlight-color:transparent}
#lab-app button{cursor:pointer}
#lab-app button:disabled{cursor:default;opacity:.4}
#lab-app :focus-visible{outline:3px solid #54832f;outline-offset:4px}
#lab-app a{color:var(--lab-accent);text-underline-offset:4px}
#lab-app .lab-switch{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 34px}
#lab-app .lab-switch a{text-decoration:none;padding:8px 15px;border:1px solid var(--lab-line);border-radius:99px;font-size:13px}
#lab-app .lab-switch a[aria-current]{background:var(--lab-ink);border-color:var(--lab-ink);color:#c6ef84}
#lab-app .lab-hero{margin-bottom:34px}
#lab-app .lab-hero>p:last-child{max-width:760px;color:var(--lab-muted);font-size:16px;margin-bottom:0;line-height:1.9}
#lab-app .lab-eyebrow{color:var(--lab-accent);font-size:12px;letter-spacing:.04em;margin-bottom:22px;font-weight:650}
#lab-app .lab-card{padding:26px;background:#fff;border:1px solid var(--lab-line);border-radius:18px;min-width:0;display:block;position:relative;overflow:visible}
#lab-app .lab-section-heading{display:flex;align-items:center;gap:11px;margin-bottom:19px}
#lab-app .lab-step{display:inline-grid;place-items:center;flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:#edf4e5;color:var(--lab-accent);font-size:11px;font-weight:700;font-variant-numeric:tabular-nums}
#lab-app .lab-label{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;font-weight:600;gap:12px;margin-bottom:9px}
#lab-app .lab-label output{font-variant-numeric:tabular-nums;font-size:16px;font-weight:700;color:var(--lab-accent)}
#lab-app .lab-query{display:flex;gap:10px}
#lab-app input[type=text],#lab-app select{min-width:0;border:1px solid #bccbbf;border-radius:9px;padding:11px 13px;background:#fbfcf9;color:var(--lab-ink);font-size:16px}
#lab-app input[type=text]{flex:1;width:100%}
#lab-app select{width:100%}
#lab-app .lab-button{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:46px;padding:11px 18px;border:1px solid var(--lab-accent);border-radius:9px;background:var(--lab-accent);color:#fff;font-size:13px;font-weight:600;white-space:nowrap;transition:background .16s,border-color .16s}
#lab-app .lab-button:hover:not(:disabled){background:#194b39;border-color:#194b39}
#lab-app .lab-button-secondary{background:#edf4e5;color:var(--lab-accent);border-color:#d6e3cf}
#lab-app .lab-button-secondary:hover:not(:disabled){background:#e1eed5;color:var(--lab-accent);border-color:#bdd2ae}
#lab-app .lab-button-plain{background:transparent;color:var(--lab-muted);border-color:var(--lab-line)}
#lab-app .lab-button-plain:hover:not(:disabled){background:#eef1e9;color:var(--lab-ink);border-color:#bccbbf}
#lab-app .lab-examples{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:13px 0 25px;font-size:12px;color:var(--lab-muted)}
#lab-app .lab-examples>span{margin-right:3px}
#lab-app .lab-examples button{border:1px solid var(--lab-line);background:#fff;border-radius:99px;padding:5px 10px;min-height:32px;color:var(--lab-accent);font-size:12px}
#lab-app .lab-examples button:hover{background:#edf4e5}
#lab-app .lab-control-grid{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:34px;padding-top:20px;border-top:1px solid var(--lab-line)}
#lab-app input[type=range]{display:block;width:100%;height:24px;margin:0;accent-color:var(--lab-accent);cursor:pointer}
#lab-app .lab-help{font-size:12px;line-height:1.8;color:var(--lab-muted);margin-bottom:15px}
#lab-app .lab-control-grid .lab-help{margin:8px 0 0}
#lab-app .lab-toggle-wrap{padding-top:3px}
#lab-app .lab-toggle{display:flex;align-items:center;gap:9px;min-height:32px;font-size:13px;font-weight:600;cursor:pointer}
#lab-app .lab-toggle input{width:19px;height:19px;margin:0;accent-color:var(--lab-accent);flex:0 0 auto}
#lab-app .lab-summary{display:grid;grid-template-columns:1fr .9fr 1.3fr 2fr;gap:24px;align-items:center;background:var(--lab-ink);color:#edf6e4;border-radius:16px;padding:25px 28px;margin:22px 0}
#lab-app .lab-summary>div{display:flex;flex-direction:column;gap:2px;font-size:11px;color:#b7c9bc}
#lab-app .lab-stat-number{font-size:34px;line-height:1.2;letter-spacing:-.04em;font-weight:600;font-variant-numeric:tabular-nums;color:#c6ef84}
#lab-app .lab-stat-number small{font-size:17px;font-weight:400;letter-spacing:0;color:#c6d5cb}
#lab-app .lab-summary p{font-size:12px;line-height:1.8;margin:0;padding-left:25px;border-left:1px solid #3d5148;color:#eef6e9}
#lab-app .lab-summary p span{display:block;color:#aebfb4;margin-top:3px}
#lab-app .lab-results-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:22px;align-items:start}
#lab-app .lab-stack{display:grid;gap:22px;min-width:0}
#lab-app .lab-candidate-list{display:grid;gap:10px}
#lab-app .lab-source{border:1px solid var(--lab-line);border-radius:10px;overflow:hidden;background:#fbfcfa}
#lab-app .lab-source-selected{border-color:#bfd0b5;background:#f6f9f2}
#lab-app .lab-source summary{display:flex;align-items:start;gap:12px;list-style:none;padding:13px 14px;cursor:pointer;font-size:12px}
#lab-app .lab-source summary::-webkit-details-marker{display:none}
#lab-app .lab-source summary::before{content:'+';font-family:monospace;color:var(--lab-accent);line-height:1.65;flex:0 0 auto}
#lab-app .lab-source[open] summary::before{content:'−'}
#lab-app .lab-source-title{flex:1;min-width:0;font-weight:600}
#lab-app .lab-mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--lab-accent);font-size:11px;margin-right:6px}
#lab-app .lab-score{color:var(--lab-accent);background:#e8efdf;padding:0 6px;border-radius:4px;font-size:11px;white-space:nowrap;font-variant-numeric:tabular-nums}
#lab-app .lab-source-body{padding:0 15px 14px}
#lab-app .lab-source-body>p:first-child{font-size:13px;line-height:1.9;margin-bottom:12px}
#lab-app .lab-source-evidence{font-size:11px;color:var(--lab-muted);line-height:1.75;margin-bottom:8px}
#lab-app .lab-disposition{font-size:11px;color:#667366;margin-bottom:0}
#lab-app .lab-good{color:#286442}
#lab-app .lab-warn{color:#845615}
#lab-app .lab-bad{color:#a13930}
#lab-app .lab-neutral{color:var(--lab-muted)}
#lab-app .lab-cited{outline:3px solid #92bd68;outline-offset:3px}
#lab-app .lab-context-docs{display:grid;gap:16px}
#lab-app .lab-context-docs article{padding-bottom:16px;border-bottom:1px solid var(--lab-line)}
#lab-app .lab-context-docs article:last-child{border-bottom:0;padding-bottom:0}
#lab-app .lab-context-doc-heading{display:flex;align-items:baseline;gap:9px;font-size:13px;margin-bottom:8px}
#lab-app .lab-citation{padding:2px 5px;color:var(--lab-accent);background:#eaf3df;border:0;border-radius:4px;white-space:nowrap;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;line-height:1.8}
#lab-app .lab-citation:hover{background:#d6eaba}
#lab-app .lab-context-docs p{font-size:13px;line-height:1.95;margin-bottom:0}
#lab-app .lab-count-note{padding-top:17px;margin:17px 0 0;border-top:1px solid var(--lab-line)}
#lab-app .lab-answer-card{background:#edf3e7;border-color:#d3e0c7}
#lab-app .lab-excerpts{padding-left:18px;margin:0 0 18px;display:grid;gap:12px}
#lab-app .lab-excerpts li{padding-left:4px;font-size:13px;line-height:1.95}
#lab-app .lab-excerpts q{quotes:'“' '”'}
#lab-app .lab-answer-card>.lab-help:last-child,#lab-app .lab-answer-card>div>.lab-help:last-child{margin-bottom:0}
#lab-app .lab-empty{padding:21px 17px;background:#f6f8f2;border:1px dashed #cbd5c2;border-radius:10px}
#lab-app .lab-empty strong{font-size:14px;font-weight:600}
#lab-app .lab-empty p{font-size:12px;line-height:1.9;color:var(--lab-muted);margin:8px 0 0}
#lab-app .lab-method{margin-top:26px;border-block:1px solid var(--lab-line)}
#lab-app .lab-method summary{cursor:pointer;font-size:13px;padding:19px 2px;color:var(--lab-accent);font-weight:600}
#lab-app .lab-method>div{font-size:13px;color:var(--lab-muted);padding:0 0 9px;max-width:900px}
#lab-app .lab-method p{line-height:1.9}
#lab-app .lab-agent-controls{display:flex;align-items:end;gap:20px;justify-content:space-between;margin-bottom:12px}
#lab-app .lab-scenario-control{flex:1;max-width:460px;min-width:0}
#lab-app .lab-button-row{display:flex;gap:9px;flex-wrap:wrap}
#lab-app .lab-task{display:flex;align-items:baseline;gap:18px;border-top:1px solid var(--lab-line);padding-top:18px;margin-top:18px}
#lab-app .lab-task>span{flex:0 0 auto;font-size:12px;color:var(--lab-muted)}
#lab-app .lab-task p{font-size:13px;margin:0}
#lab-app code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em;padding:2px 4px;border-radius:3px;background:#edf1e8;overflow-wrap:anywhere}
#lab-app .lab-agent-status{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:20px 24px;margin:22px 0;background:var(--lab-ink);color:#e8f3e0;border-radius:13px;font-size:13px}
#lab-app .lab-agent-status>div{display:flex;align-items:center;gap:10px}
#lab-app .lab-agent-status>span{color:#b9cabb;font-size:12px;font-variant-numeric:tabular-nums;flex:0 0 auto}
#lab-app .lab-status-dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:#a7b5a6}
#lab-app .lab-tone-good{background:#c6ef84}
#lab-app .lab-tone-warn{background:#ffcd75}
#lab-app .lab-tone-bad{background:#ffac97}
#lab-app .lab-trace-list{list-style:none;padding:0;margin:0;display:grid;gap:20px}
#lab-app .lab-trace-item{border:1px solid var(--lab-line);border-radius:10px;overflow:hidden}
#lab-app .lab-trace-heading{display:flex;align-items:center;gap:8px;padding:11px 12px;background:#f5f8f0;font-size:12px}
#lab-app .lab-trace-heading strong{min-width:0;flex:1;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}
#lab-app .lab-trace-index{display:inline-grid;place-items:center;width:20px;height:20px;border:1px solid #d8e3cb;border-radius:50%;color:var(--lab-accent);font-size:10px;flex:0 0 auto}
#lab-app .lab-trace-badge{font-size:10px;white-space:nowrap}
#lab-app .lab-json-pair{padding:13px;display:grid;gap:14px}
#lab-app pre{max-width:100%;margin:0;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;background:#f3f5f0;padding:13px;border:1px solid #e5eadf;border-radius:7px;color:#324a3a;tab-size:2}
#lab-app .lab-assistant-text{font-size:13px;line-height:1.9;padding:16px;margin:0;color:var(--lab-muted)}
#lab-app .lab-state-json{background:#183d2e;color:#d6edbd;border:0;padding:20px;font-size:13px}
#lab-app .lab-state-count{display:flex;align-items:center;justify-content:space-between;margin:16px 0 9px;font-size:12px;color:var(--lab-muted)}
#lab-app .lab-state-count strong{color:var(--lab-accent);font-size:24px;line-height:1}
#lab-app .lab-check-list{list-style:none;margin:0;padding:0;display:grid;gap:17px}
#lab-app .lab-check-list li{padding-bottom:15px;border-bottom:1px solid var(--lab-line)}
#lab-app .lab-check-list li:last-child{border:0}
#lab-app .lab-check-list li>div{display:flex;gap:12px;justify-content:space-between;align-items:baseline;font-size:13px}
#lab-app .lab-check-label{font-size:11px;flex:0 0 auto}
#lab-app .lab-check-list p{margin:7px 0 0;font-size:11px;line-height:1.9;color:var(--lab-muted)}
#lab-app .lab-verdict{padding:13px 14px;background:#edf0e8;border-radius:8px;font-size:12px;font-weight:600;color:var(--lab-muted)}
#lab-app .lab-verdict-good{background:#e4f1d5;color:#29583e}
#lab-app .lab-verdict-warn{background:#fff2d5;color:#845615}
#lab-app .lab-verdict-bad{background:#f9e9e3;color:#943d33}
#lab-app .lab-trace-empty{min-height:295px;position:relative}
#lab-app .lab-empty-mark{display:block;font:54px/1.3 ui-monospace,Consolas,monospace;color:#cad5bf;letter-spacing:-.05em;margin-top:40px;text-align:center}
@media(max-width:850px){#lab-app .lab-control-grid{gap:22px;grid-template-columns:1fr 1.25fr}#lab-app .lab-toggle-wrap{grid-column:1/-1;display:flex;align-items:center;gap:16px;padding:0}#lab-app .lab-control-grid .lab-toggle-wrap .lab-help{margin:0}#lab-app .lab-summary{grid-template-columns:1fr 1fr 1.3fr;gap:19px}#lab-app .lab-summary p{grid-column:1/-1;border-left:0;border-top:1px solid #3d5148;padding:14px 0 0}#lab-app .lab-agent-controls{display:block}#lab-app .lab-scenario-control{max-width:none}#lab-app .lab-button-row{margin-top:16px}#lab-app .lab-agent-status{align-items:start;flex-direction:column;gap:6px}#lab-app .lab-agent-status>span{padding-left:18px}#lab-app .lab-card{padding:22px}}
@media(max-width:680px){#lab-app{width:min(1160px,calc(100% - 28px));margin-bottom:48px}#lab-app .lab-switch{margin:20px 0 28px;gap:7px}#lab-app .lab-switch a{font-size:11px;padding:7px 12px}#lab-app .lab-hero{margin-bottom:26px}#lab-app .lab-eyebrow{font-size:10px;line-height:1.9;letter-spacing:0;margin-bottom:17px}#lab-app h1{font-size:34px;line-height:1.25}#lab-app .lab-hero>p:last-child{font-size:14px;line-height:1.9}#lab-app .lab-card{padding:19px;border-radius:13px}#lab-app h2{font-size:17px}#lab-app .lab-results-grid{grid-template-columns:minmax(0,1fr);gap:18px}#lab-app .lab-stack{gap:18px}#lab-app .lab-query{flex-direction:column}#lab-app .lab-query .lab-button{align-self:stretch}#lab-app .lab-examples{gap:6px}#lab-app .lab-examples>span{width:100%;margin-bottom:3px}#lab-app .lab-control-grid{grid-template-columns:minmax(0,1fr);gap:19px;padding-top:17px}#lab-app .lab-toggle-wrap{display:block;grid-column:auto}#lab-app .lab-control-grid .lab-toggle-wrap .lab-help{margin-top:6px}#lab-app .lab-summary{padding:21px 19px;gap:15px 10px;border-radius:13px}#lab-app .lab-stat-number{font-size:29px}#lab-app .lab-stat-number small{font-size:13px}#lab-app .lab-summary>div{font-size:10px}#lab-app .lab-summary p{font-size:11px}#lab-app .lab-section-heading{margin-bottom:16px}#lab-app .lab-source summary{padding:12px 10px;gap:8px}#lab-app .lab-source-body{padding:0 12px 12px}#lab-app .lab-task{display:block;padding-top:14px}#lab-app .lab-task>span{display:block;margin-bottom:7px}#lab-app .lab-button-row{gap:7px}#lab-app .lab-button-row .lab-button{padding:10px 12px;font-size:12px}#lab-app .lab-button-row .lab-button:first-child{flex:1}#lab-app .lab-agent-status{padding:18px;font-size:12px}#lab-app .lab-agent-status>span{font-size:11px}#lab-app .lab-json-pair{padding:11px}#lab-app pre{font-size:11px}#lab-app .lab-state-json{font-size:12px;padding:16px}#lab-app .lab-check-list li>div{font-size:12px;gap:6px}#lab-app .lab-check-label{font-size:10px}#lab-app .lab-context-doc-heading{align-items:start}#lab-app .lab-citation{flex:0 0 auto}#lab-app .lab-trace-empty{min-height:220px}#lab-app .lab-empty-mark{font-size:44px;margin-top:25px}}
@media(prefers-reduced-motion:reduce){#lab-app *,#lab-app *::before,#lab-app *::after{scroll-behavior:auto!important;transition:none!important}}