/* The AI Explainer workflow collection. System fonts keep the tools self-contained. */
:root{--paper:#f7f5ef;--white:#fffef9;--ink:#192c29;--soft:#53615a;--green:#176651;--mint:#dceae1;--line:#d9ddd3;--orange:#b25e37;--serif:Georgia,'Times New Roman',serif;--sans:ui-sans-serif,system-ui,-apple-system,'Segoe UI',Arial,sans-serif}
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var(--green);background:var(--green);color:white;width:35px;height:35px;font:16px var(--serif);border-radius:50%}.lab-links{display:flex;gap:26px;align-items:center;font-size:13px;font-weight:600}.lab-links a[aria-current]{color:var(--green);text-decoration:underline;text-underline-offset:7px}.lab-skip{position:absolute;left:16px;top:-80px;background:var(--green);color:white;padding:12px;z-index:100}.lab-skip:focus{top:8px}.wrap{max-width:1180px;margin:auto;padding-inline:28px}.eyeline{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:1.8px;color:var(--green);margin:0 0 18px}.lab h1,.lab h2,.lab h3{line-height:1.12;letter-spacing:-1.2px;font-weight:400;font-family:var(--serif)}.lab h1{font-size:clamp(38px,5.2vw,68px);margin:0 0 24px}.lab h2{font-size:clamp(29px,3.5vw,43px);margin:0}.lab h3{font-size:25px;margin:10px 0 14px}.intro{font-size:18px;line-height:1.7;color:var(--soft);max-width:610px}.home-hero{padding-block:70px 52px;display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}.home-hero h1 em{font-weight:400;color:var(--green)}.hero-actions,.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:26px}.lab .btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 19px;min-height:46px;background:var(--green);border:1px solid var(--green);border-radius:4px;color:white;font-weight:650;font-size:13px;text-decoration:none;gap:10px}.lab .btn:hover{background:#0e4e3e}.lab .btn.secondary{background:transparent;color:var(--green)}.lab .btn.secondary:hover{background:var(--mint)}.small-note{font-size:12px;color:var(--soft);margin-top:20px}.sheet-demo{position:relative;border:1px solid #c3cfc2;border-radius:5px;box-shadow:10px 12px 0 #e9e9de;background:var(--white);overflow:hidden}.demo-toolbar{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;background:#f1f4ec;font-size:11px;letter-spacing:.5px}.demo-title{padding:22px 22px 14px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--soft)}.demo-total{font:43px var(--serif);color:var(--green);margin-top:5px}.demo-mini{padding:0 22px 15px}.demo-mini table{font-size:11px}.demo-mini td,.demo-mini th{padding:10px 5px}.demo-mini th{text-transform:uppercase;letter-spacing:1px;color:var(--soft);font-size:9px}.demo-status{border-top:1px solid var(--line);padding:13px 22px;font-size:10px;color:var(--green);background:#f1f6ee}.stat-strip{display:flex;flex-wrap:wrap;gap:20px 46px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;font-size:12px;color:var(--soft)}.stat-strip strong{color:var(--ink);margin-right:7px;font-size:15px}.section{padding-block:54px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}.section-heading>a{font-size:12px;color:var(--green);font-weight:650}.section-heading .eyeline{margin-bottom:9px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.lab-card{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--white);padding:25px;position:relative}.lab-card .card-num{font:12px/1.5 var(--sans);color:var(--orange);margin-bottom:25px}.lab-card p{font-size:14px;color:var(--soft);margin:0 0 20px}.lab-card .card-footer{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:11px;color:var(--green)}.lab-card h3 a::after{content:'';position:absolute;inset:0}.lab-card:hover{border-color:#719480}.tool-band{background:#e9efe5;border-block:1px solid var(--line)}.tool-band 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.intro{max-width:760px}.crumb{font-size:12px;color:var(--soft);margin:0 0 24px}.article-grid{display:grid;grid-template-columns:minmax(0,790px) 240px;gap:65px;align-items:start;padding-bottom:70px}.prose{font-size:16px;line-height:1.85;min-width:0}.prose h2{font-size:31px;margin:42px 0 17px;scroll-margin-top:25px}.prose h3{font-size:24px;margin:28px 0 12px}.prose p{margin:0 0 19px}.prose a{color:var(--green);text-decoration:underline;text-underline-offset:3px}.prose li{margin-bottom:8px}.prose code{font-size:.83em;background:#e8ede4;padding:2px 5px;border-radius:3px;overflow-wrap:anywhere}.prose pre{padding:20px;background:#e9eee7;border:1px solid var(--line);border-radius:4px;font:12px/1.8 ui-monospace,Consolas,monospace;overflow:auto;white-space:pre}.prose pre code{background:none;padding:0;font-size:inherit}.prose .callout{border-left:3px solid var(--green);padding:18px 22px;background:#e9eee3;margin:25px 0}.prose .callout p:last-child{margin-bottom:0}.prose 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#b9cbbb;background:#edf2e9;margin-block:26px}.download-box h3{margin:0 0 10px}.download-box a{display:inline-block;margin:6px 18px 6px 0;font-size:13px;font-weight:650}.source-list{font-size:13px}.figure{margin:30px 0}.figure img{border:1px solid var(--line);background:white;width:100%}.figure figcaption{font-size:11px;color:var(--soft);margin-top:10px}.tool-shell{background:var(--white);border:1px solid #b7c5b8;border-radius:5px;padding:28px;margin-bottom:32px;min-width:0}.tool-topline{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:20px;font-size:11px;color:var(--green)}.tool-topline p{margin:0}.tool-shell label{display:block;font-size:12px;font-weight:650;margin-bottom:7px}.lab textarea{resize:vertical;width:100%;min-height:190px;border:1px solid #b8c3b8;background:#fcfcf8;color:var(--ink);border-radius:3px;padding:12px;font:12px/1.65 ui-monospace,Consolas,monospace;tab-size:2}.lab select,.lab input[type=text],.lab input[type=file]{padding:10px;border:1px solid #b8c3b8;border-radius:3px;background:#fcfcf8;max-width:100%;min-height:42px}.lab input[type=file]{width:100%;font-size:12px}.file-control{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:16px 0}.two-inputs{display:grid;grid-template-columns:1fr 1fr;gap:22px}.control-row{display:flex;gap:20px;flex-wrap:wrap;align-items:end;margin-top:18px}.control-row>div{flex:1;min-width:160px}.control-row .btn{flex:0 0 auto}.tool-result{border-top:1px solid var(--line);margin-top:26px;padding-top:24px;overflow-wrap:anywhere}.tool-result:empty{display:none}.result-summary{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.result-stat{padding:12px 16px;background:#eef3e9;border:1px solid var(--line);font-size:11px}.result-stat strong{display:block;font:25px var(--serif);color:var(--green)}.tool-result table{font-size:11px;min-width:580px}.tool-result td{max-width:230px;overflow-wrap:anywhere}.error-box{padding:15px;border-left:3px solid #a44631;background:#faebe4;color:#713821;font-size:13px}.tool-help{font-size:12px;color:var(--soft)}.result-note{font-size:12px;color:var(--soft);margin-top:14px}.badge{display:inline-block;font:10px var(--sans);border:1px solid #b4c8b9;color:var(--green);padding:4px 7px;letter-spacing:.2px}.compact-list{display:grid;gap:0;border-top:1px solid var(--line)}.compact-item{display:grid;grid-template-columns:48px 1fr 130px;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}.compact-item>span{font:20px var(--serif);color:var(--orange)}.compact-item h3{font-size:23px;margin:0 0 8px}.compact-item p{margin:0;color:var(--soft);font-size:13px}.compact-item .badge{justify-self:end;margin-top:5px}.legacy-note{padding:18px;border:1px solid var(--line);font-size:13px;margin-top:30px}.legacy .lab-header a,.legacy .lab-footer a{text-decoration:none}.legacy .lab-header{background:var(--white)}.lab .section-heading{width:auto}.lab .section-heading h2{margin:0}.lab .section-heading .eyeline{margin:0 0 9px}.lab .section-heading a{margin:0}.lab .section-heading{display:flex}.lab .hero-actions .btn.secondary{border-color:var(--line)}
@media(max-width:950px){.home-hero{gap:32px;grid-template-columns:1fr 1fr}.lab h1{font-size:45px}.article-grid{grid-template-columns:minmax(0,1fr);gap:10px}.toc{display:none}.cards{gap:12px}.lab-card{padding:20px}.lab h3{font-size:22px}}
@media(max-width:700px){.wrap{padding-inline:20px}.lab-nav{padding:17px 20px;flex-wrap:wrap;gap:16px}.lab-logo{font-size:18px}.lab-links{gap:20px;font-size:12px;width:100%;justify-content:space-between}.home-hero{grid-template-columns:1fr;padding-block:42px 34px;gap:32px}.lab h1{font-size:43px}.intro{font-size:16px}.cards{grid-template-columns:1fr}.lab-card .card-num{margin-bottom:12px}.section{padding-block:36px}.section-heading{align-items:start}.section-heading h2{font-size:30px}.stat-strip{gap:12px 20px}.numbered-path{grid-template-columns:1fr;gap:24px}.footer-grid{flex-direction:column;gap:18px}.page-lead{padding-top:35px}.page-lead h1{font-size:37px}.compact-item{grid-template-columns:30px 1fr;gap:12px}.compact-item .badge{grid-column:2;justify-self:start}.two-inputs,.file-control{grid-template-columns:1fr}.tool-shell{padding:18px}.tool-topline{align-items:start;flex-direction:column}.control-row{gap:12px}.control-row .btn{width:100%}.prose{font-size:15px}.prose h2{font-size:28px}.article-grid{padding-bottom:40px}.demo-total{font-size:39px}.demo-mini{overflow:auto}.hero-actions .btn{flex-grow:1}.lab-footer .wrap{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(max-width:700px){.demo-title{gap:8px;padding:18px 16px 12px}.demo-title>span{max-width:80px;font-size:9px}.demo-total{font-size:33px;white-space:nowrap}.demo-mini{padding-inline:16px}}
.tool-result td:first-child{white-space:nowrap;min-width:70px}.tool-result th{white-space:nowrap}.two-inputs .file-control{display:block}
.record-detail{margin:15px 0;border:1px solid var(--line);padding:14px;background:#f7f9f2}.record-detail summary{cursor:pointer;font-size:13px;font-weight:650;color:var(--green)}.record-detail .data-wrap{margin-bottom:5px}.sales-total{padding:23px;background:#e6efe1;border:1px solid #b7cdb8;margin:22px 0}.sales-total>span{display:block;font-size:10px;letter-spacing:1.3px;color:var(--green)}.sales-total>strong{display:block;font:42px var(--serif);color:var(--green);margin:9px 0}.sales-total p{font-size:13px;margin:6px 0;color:var(--soft)}.lab input[type=date]{padding:10px;border:1px solid #b8c3b8;border-radius:3px;background:#fcfcf8;min-height:42px;max-width:100%}.control-row>.repeat-choice{flex-basis:100%;min-width:0}.repeat-choice label{font-weight:500;line-height:1.65}.repeat-choice input{margin-right:8px;accent-color:var(--green)}.tool-band .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.tool-band .cards{grid-template-columns:1fr}.sales-total>strong{font-size:34px}}
.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.tool-grid{grid-template-columns:1fr}}
.tool-result table.compact{min-width:0}.tool-result table.compact th{white-space:normal}