.labs-app{--labs-ink:#152b25;--labs-muted:#52645c;--labs-line:#d9e2dc;--labs-accent:#bcec68;box-sizing:border-box;max-width:1180px;margin:32px auto;padding:clamp(24px,4vw,52px);border:1px solid var(--labs-line);border-radius:20px;background:#f7f9f4;color:var(--labs-ink);font-family:system-ui,sans-serif;line-height:1.65;text-align:left}
.labs-app *{box-sizing:border-box}.labs-app h2{font-size:clamp(28px,4vw,46px);line-height:1.15;letter-spacing:-.035em;color:var(--labs-ink);margin:20px 0}.labs-app h3{font-size:22px;line-height:1.3;color:var(--labs-ink);margin:12px 0}.labs-app p{margin:12px 0 20px}.labs-app .labs-eyebrow{font-size:11px;letter-spacing:.14em;font-weight:750;color:var(--labs-muted)}.labs-app a{color:var(--labs-ink)}.labs-app a:focus-visible,.labs-app button:focus-visible{outline:3px solid #245eae;outline-offset:4px}.labs-app .labs-button{display:inline-block;background:var(--labs-ink);color:#fff;border:1px solid var(--labs-ink);border-radius:8px;padding:12px 20px;text-decoration:none;font:600 15px/1.4 system-ui;cursor:pointer}.labs-app .labs-button:hover{background:#294f3c;color:#fff}.labs-link{font-weight:600;text-underline-offset:4px}.labs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:22px;margin-top:32px}.labs-card{padding:28px;border:1px solid var(--labs-line);border-radius:12px;background:white}.labs-muted{color:var(--labs-muted);font-size:14px}.labs-classroom{display:grid;grid-template-columns:minmax(200px,1fr) minmax(0,2.5fr);gap:32px;margin-top:30px}.labs-syllabus{padding-right:20px;border-right:1px solid var(--labs-line)}.labs-syllabus ol{padding-left:22px}.labs-syllabus li{padding:7px 0}.labs-syllabus a[aria-current]{font-weight:750;text-decoration-thickness:2px}.labs-lesson{min-width:0}.labs-content pre{background:var(--labs-ink);color:#e6f3df;padding:20px;border-radius:10px;overflow:auto;font-size:14px}.labs-content code{font-family:ui-monospace,monospace}.labs-notice{padding:16px;border-left:4px solid #567d31;background:#eaf2df;border-radius:0 8px 8px 0}.labs-progress{display:block;font-size:14px;font-weight:650}.labs-progress progress{display:block;width:100%;height:10px;margin-top:10px;accent-color:#456c27}.labs-content img{max-width:100%;height:auto}@media(max-width:700px){.labs-classroom{grid-template-columns:1fr}.labs-syllabus{border-right:0;border-bottom:1px solid var(--labs-line);padding:0 0 20px}.labs-app{margin:16px auto;border-radius:12px}}
.labs-outline{min-width:0;align-self:start;position:sticky;top:150px}.labs-outline>summary,.labs-study-tools>summary{cursor:pointer;font-weight:700;padding:12px 0}.labs-outline .labs-syllabus{position:static!important;max-height:calc(100vh - 200px)!important;overflow:auto}.labs-study-tools{margin:15px 0}.labs-lesson{scroll-margin-top:185px}.labs-outline summary:focus-visible,.labs-study-tools summary:focus-visible{outline:3px solid #245eae;outline-offset:4px}@media(max-width:760px){.labs-outline{position:static;top:auto}.labs-outline .labs-syllabus{max-height:260px!important}.labs-classroom{gap:16px}.labs-lesson{scroll-margin-top:180px}}
.labs-lesson:focus{outline:none}
.labs-purchases{margin:32px 0}.labs-purchase{padding:22px;margin:16px 0;border:1px solid var(--labs-line);border-radius:12px;background:#fff}.labs-purchase h4{font-size:20px;margin:0 0 8px}.labs-purchase form{margin:10px 0}.labs-purchase button.labs-link{border:0;background:transparent;color:var(--labs-ink);padding:8px 0;cursor:pointer;text-decoration:underline;font:inherit}.labs-refund{margin:18px 0;max-width:720px;border:1px solid var(--labs-line);border-radius:10px;background:#fff;padding:16px 20px}.labs-refund>summary{font-weight:650;cursor:pointer;color:var(--labs-ink);padding:4px}.labs-refund>summary:focus-visible{outline:3px solid #245eae;outline-offset:4px}.labs-refund label{display:block;margin:16px 0}.labs-refund input[type=checkbox]{width:auto;margin-right:8px}