.lp-stage{border:1px solid var(--color-border);border-radius:1rem;overflow:auto;box-shadow:0 10px 30px rgba(28,25,23,.08)}.lp-stage,.ls-app{background:var(--color-background)}.ls-app{position:relative;min-width:1360px;min-height:640px;color:var(--color-text);-webkit-user-select:none;-moz-user-select:none;user-select:none}.ls-app [data-tour]{scroll-margin:80px}.ls-app .lf-app-header.ls-static{position:relative}.ls-app .lf-rail{min-height:100%}.ls-canvas{min-height:24rem;border-radius:.75rem;border:1px dashed var(--color-border);background:radial-gradient(circle,var(--color-border) 1px,transparent 1px) 0 0 /16px 16px,var(--color-surface);padding:1.25rem;display:flex;flex-direction:column;gap:.75rem;align-items:flex-start}.ls-toast{left:50%;bottom:1.25rem;transform:translateX(-50%);background:var(--cpq-stone);color:var(--cpq-ink-on-dark);padding:.6rem .9rem;border-radius:.6rem}.ls-help-fab,.ls-toast{position:absolute;display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.875rem}.ls-help-fab{right:1rem;bottom:1rem;padding:.6rem 1rem;border-radius:999px;background:var(--color-surface);box-shadow:0 4px 18px rgba(28,25,23,.15)}.ls-dialog-backdrop{position:absolute;inset:0;background:rgba(28,25,23,.35);display:grid;place-items:center}.ls-tour{position:fixed;inset:0;z-index:100;pointer-events:none}.ls-tour__dim{position:fixed;inset:0;background:rgba(12,10,9,.6)}.ls-tour__spot{position:fixed;border-radius:.6rem;box-shadow:0 0 0 9999px rgba(12,10,9,.6),0 0 0 3px var(--cpq-amber-hover);transition:all .25s ease;animation:ls-pulse 1.8s ease-in-out infinite}@keyframes ls-pulse{0%,to{box-shadow:0 0 0 9999px rgba(12,10,9,.6),0 0 0 3px var(--cpq-amber-hover)}50%{box-shadow:0 0 0 9999px rgba(12,10,9,.6),0 0 0 7px rgba(217,119,6,.45)}}@media (prefers-reduced-motion:reduce){.ls-tour__spot{animation:none}.ls-tour__pop,.ls-tour__spot{transition:none}}.ls-tour-target{cursor:pointer}.ls-tour__pop{position:fixed;pointer-events:auto;background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);border-radius:1rem;padding:.9rem 1rem 1rem;box-shadow:0 18px 48px rgba(12,10,9,.35);transition:top .25s ease,left .25s ease}.ls-tour__pop.is-center{top:50%;left:50%;transform:translate(-50%,-50%);width:min(420px,calc(100vw - 32px))}.ls-tour__pop.is-sheet{left:12px;right:12px;bottom:12px;top:auto;transform:none;width:auto}.ls-tour__meta{display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--color-muted);font-weight:600}.ls-tour__close{border:0;background:none;font-size:1.4rem;line-height:1;color:var(--color-muted);cursor:pointer;padding:0 .25rem}.ls-tour__bar{height:4px;background:var(--color-border);border-radius:4px;margin:.5rem 0 .65rem;overflow:hidden}.ls-tour__bar span{display:block;height:100%;background:var(--color-cta);border-radius:4px;transition:width .25s}.ls-tour__title{font-size:1.05rem;font-weight:700;margin:0 0 .35rem}.ls-tour__body{font-size:.875rem;line-height:1.55;color:var(--color-secondary);margin:0 0 .9rem}.ls-tour__actions{display:flex;justify-content:space-between;gap:.5rem}.ls-tour__btn:disabled{opacity:.4;cursor:default}.lp{width:100%}.lp-head{display:flex;flex-direction:column;align-items:stretch;gap:.35rem;margin-bottom:1rem}.lp-head__main{min-width:0}.lp-head__title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem}.lp-back{color:var(--color-cta);font-weight:600;font-size:.875rem;align-self:flex-start;transition:color .2s ease}.lp-back:hover{color:var(--color-text)}.lp-kicker{margin:0;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-muted);font-weight:700}.lp-title{margin:.15rem 0 0;font-size:clamp(1.25rem,1rem + 1vw,1.75rem);font-weight:700;color:var(--color-text);line-height:1.25}.lp-lead{color:var(--color-secondary);line-height:1.65;margin:0 0 1rem;font-size:1rem}.lp-step-meta{margin:0;font-size:.8125rem;font-weight:600;color:var(--color-muted)}.lp-done{flex-shrink:0;background:#ecfdf5;color:#065f46;font-weight:700;font-size:.75rem;padding:.25rem .65rem;border-radius:999px}.lp-progress{margin-bottom:1.25rem;max-width:100%}.lp-progress__track{height:4px;margin-top:.35rem;border-radius:4px;background:var(--color-border);overflow:hidden}.lp-progress__fill{display:block;height:100%;background:var(--color-cta);border-radius:4px;transition:width .25s ease}.lp--study-lab{max-width:100%}.lp-prose{max-width:65ch}.lp-prose p{margin:.75rem 0 0;font-size:1rem;line-height:1.65;color:var(--color-secondary)}.lp-prose p:first-child{margin-top:0}.lp-study-panel{overflow:hidden}.lp-study-panel__copy{padding:1.25rem 1.35rem}.lp-study-panel__copy h2{margin:0;font-size:1.0625rem;font-weight:700;color:var(--color-text)}.lp-study-panel--lab .lp-study-panel__copy{padding-bottom:1rem;border-bottom:1px solid var(--color-border)}.lp-study-lab{padding:1rem 1.35rem 1.25rem;background:color-mix(in srgb,var(--color-background) 55%,var(--color-surface))}.lp-study-panel__examples{padding:0 1.35rem 1.25rem;border-top:1px solid var(--color-border)}.lp-study-panel__examples .lp-example{margin-top:1rem}.lp-study-lab__editor.lf-rule-editor{margin-top:0;border-radius:.75rem}.lp-study-lab__editor.lf-rule-editor--embedded .lf-rule-editor__body{height:min(28rem,58dvh);max-height:min(28rem,58dvh)}@container lf-rule-editor (min-width: 26rem){.lp-study-lab__editor .lf-rule-editor__body{grid-template-columns:minmax(0,1fr) 14.5rem}}.lp-study-see-also{margin:1rem 0 0;font-size:.875rem}.lp-study-see-also a{color:var(--color-cta);font-weight:600;text-decoration:underline;text-underline-offset:2px;transition:color .2s ease}.lp-study-see-also a:hover{color:var(--color-text)}.lp-foot{align-items:center;margin-top:1.25rem;padding-top:1rem;border-top:1px solid var(--color-border)}.lp-actions,.lp-foot{display:flex;flex-wrap:wrap;gap:.6rem}.lp-actions{margin-top:1rem}.lp--quiz>ol,.lp--study .lp-study-panel{width:100%}.lp-locked{padding:2rem 0}.lp-finish{position:fixed;inset:0;z-index:101;background:rgba(12,10,9,.5);display:grid;place-items:center;padding:1rem}.lp-finish__card{max-width:32rem;padding:1.5rem}.lp-topics{list-style:none;padding:0;margin:1rem 0 0;display:flex;flex-direction:column;gap:.5rem}.lp-topics li{padding:.75rem .9rem}.lp-topics li.is-read{border-color:#a7f3d0;background:#f0fdf4}.lp-topics__link{display:flex;align-items:flex-start;gap:.75rem;color:var(--color-text);cursor:pointer;transition:color .2s ease}.lp-topics__link:hover .lp-topics__title{color:var(--color-cta)}.lp-topics__body{display:flex;flex-direction:column;gap:.2rem;min-width:0}.lp-topics__title{font-weight:600;font-size:.95rem}.lp-topics__lead{font-size:.8rem;font-weight:400;color:var(--color-muted);line-height:1.45}.lp-topics__mark{width:1.35rem;height:1.35rem;margin-top:.1rem;border-radius:.35rem;border:2px solid var(--color-border);display:inline-grid;place-items:center;color:#047857;flex-shrink:0}li.is-read .lp-topics__mark{border-color:#047857}.ls-loading{padding:2.5rem 0;color:var(--color-muted)}.lc{display:flex;flex-direction:column;gap:1.25rem}.lc-progress{display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap;padding:1rem 1.1rem}.lc-progress__label{margin:0;font-size:.75rem;color:var(--color-muted);font-weight:700;text-transform:uppercase;letter-spacing:.05em}.lc-progress__value{margin:.1rem 0 0;font-weight:700;font-size:1.1rem}.lc-progress__bar{flex:1;min-width:10rem;height:8px;border-radius:8px;background:var(--color-border);overflow:hidden}.lc-progress__bar span{display:block;height:100%;background:var(--color-cta)}.lc-block{padding:1.1rem}.lc-block__head{display:flex;gap:.9rem;align-items:flex-start;margin-bottom:.75rem}.lc-block__num{width:2.1rem;height:2.1rem;border-radius:.6rem;background:var(--cpq-stone);color:var(--cpq-ink-on-dark);display:grid;place-items:center;font-weight:700;flex-shrink:0}.lc-block__title{margin:0;font-size:1.1rem;font-weight:700}.lc-block__lead{margin:.25rem 0 0;color:var(--color-secondary);font-size:.875rem}.lc-badge{margin-left:auto;font-size:.75rem;font-weight:700;color:var(--color-cta);background:var(--color-cta-soft);padding:.2rem .6rem;border-radius:999px;white-space:nowrap}.lc-lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.lc-lesson{display:flex;align-items:center;gap:.75rem;padding:.75rem .9rem;color:var(--color-text);min-height:3.5rem;cursor:pointer;transition:background-color .2s ease,border-color .2s ease}.lc-lesson:focus-visible{outline:2px solid var(--color-cta);outline-offset:2px}.lc-lesson.is-locked{opacity:.55;cursor:not-allowed}.lc-lesson__state{width:2rem;height:2rem;border-radius:50%;display:grid;place-items:center;background:var(--color-cta-soft);color:var(--color-cta);flex-shrink:0}.lc-lesson__state.is-done{background:#ecfdf5;color:#047857}.lc-lesson__state.is-locked{background:var(--color-background);color:var(--color-muted)}.lc-lesson__text{display:flex;flex-direction:column;flex:1;min-width:0}.lc-lesson__title{font-weight:600}.lc-lesson__summary{font-size:.8rem;color:var(--color-muted)}.lc-lesson__meta{font-size:.75rem;color:var(--color-muted);white-space:nowrap}.lc-foot{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}.lc-reset{border:0;background:none;color:var(--color-muted);text-decoration:underline;cursor:pointer;font:inherit}@media (max-width:640px){.lc-block__head{flex-wrap:wrap}.lc-badge{margin-left:0}.lc-lesson__meta{display:none}}.hv{display:grid;grid-template-columns:18.5rem 1fr;gap:1.5rem;align-items:start}.hv-toc{position:sticky;top:5rem;max-height:calc(100dvh - 6rem);overflow:auto;padding:.75rem}.hv-toc__title{margin:0 0 .5rem;font-weight:700}.hv-toc__list{list-style:none;margin:0;padding:0}.hv-toc__list.is-nested{padding-left:.9rem;border-left:1px solid var(--color-border);margin-left:.4rem}.hv-toc__link{display:flex;gap:.25rem;padding:.3rem .4rem;border-radius:.45rem;color:var(--color-secondary);font-size:.875rem;line-height:1.35}.hv-toc__link:hover{background:var(--color-background);color:var(--color-text)}.hv-toc__link.is-active{background:var(--color-cta-soft);color:var(--color-cta);font-weight:600}.hv-toc__caret{width:.75rem;flex-shrink:0;color:var(--color-muted)}.hv-topic{padding:1.4rem 1.6rem;min-width:0}.hv-crumbs{font-size:.8rem;color:var(--color-muted);margin-bottom:.4rem}.hv-crumbs a{color:var(--color-cta)}.hv-h1{margin:0 0 .6rem;font-size:clamp(1.4rem,1.1rem + 1vw,1.9rem)}.hv-h1,.hv-h2{font-weight:700}.hv-h2{margin:1.4rem 0 .5rem;font-size:1.05rem}.hv-p{line-height:1.65;margin:0 0 .6rem}.hv-location,.hv-p{color:var(--color-secondary)}.hv-location{background:var(--color-background);border-radius:.6rem;padding:.5rem .75rem;font-size:.875rem;margin:0 0 .9rem}.hv-table{width:100%;border-collapse:collapse;font-size:.875rem}.hv-table td,.hv-table th{text-align:left;vertical-align:top;border-top:1px solid var(--color-border);padding:.5rem .6rem;line-height:1.5}.hv-table th{width:32%;font-weight:600;color:var(--color-text)}.hv-steps,.hv-table td{color:var(--color-secondary)}.hv-steps{padding-left:1.3rem;line-height:1.6;list-style:decimal}.hv-note{margin-top:1.1rem;border-left:4px solid var(--color-cta);background:var(--color-cta-soft);border-radius:.5rem;padding:.6rem .9rem;color:var(--color-text)}.hv-note p{margin:.25rem 0 0}.hv-links{padding-left:1.2rem;line-height:1.8;list-style:disc}.hv-back-to-lesson a,.hv-links a{color:var(--color-cta)}.hv-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(13.5rem,1fr));gap:.75rem;margin-top:.9rem}.hv-card{display:flex;flex-direction:column;gap:.35rem;padding:.9rem;color:var(--color-text)}.hv-card__title{font-weight:700}.hv-card__text{font-size:.8rem;color:var(--color-muted);line-height:1.5}.hv-code{margin:.35rem 0 .75rem;padding:.65rem .85rem;border-radius:.5rem;background:var(--color-background);border:1px solid var(--color-border);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.82rem;line-height:1.5;overflow-x:auto;white-space:pre-wrap}.hv-example{margin-bottom:1.25rem;padding-bottom:1rem;border-bottom:1px solid var(--color-border)}.hv-example:last-child{border-bottom:none;padding-bottom:0}.hv-example__title{margin:0 0 .35rem;font-weight:600;font-size:.95rem}.hv-example__call-label,.hv-example__input{margin:0 0 .25rem;font-size:.875rem}.hv-example__result{margin:.5rem 0 0;font-size:.875rem;color:var(--color-secondary)}.hv-back-to-lesson{margin:0 0 .6rem;font-weight:600}@media (max-width:900px){.hv{grid-template-columns:1fr}.hv-toc{position:static;max-height:50vh}.hv-topic{padding:1.1rem 1rem}.hv-table th{width:40%}}