.lrn{--lrn-top:64px;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;background:var(--lt-bg);color:var(--lt-ink);font-family:var(--lt-font);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.lrn *,.lrn :after,.lrn :before{box-sizing:border-box}.lrn :focus-visible{outline:2px solid var(--lt-accent);outline-offset:2px}.lrn-top{height:var(--lrn-top);flex:none;display:flex;align-items:center;gap:10px;padding:0 28px;border-bottom:1px solid var(--lt-line)}.lrn-wordmark{display:inline-block;font-family:var(--font-jost),var(--lt-font),sans-serif;font-style:italic;font-weight:900;letter-spacing:-.03em;line-height:1;font-size:22px;color:var(--lt-ink);text-decoration:none}.lrn-crumb{font-size:13px;font-weight:600;color:var(--lt-faint)}.lrn-crumb-title{color:var(--lt-muted)}.lrn-top-spacer{flex:1 1}.lrn-icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--lt-line);background:var(--lt-card);color:var(--lt-muted);display:grid;place-items:center;cursor:pointer;transition:color .2s,border-color .2s,background .2s}.lrn-icon-btn:hover{color:var(--lt-ink);border-color:var(--lt-line-strong)}.lrn-pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 20px;border-radius:999px;border:1px solid transparent;font:inherit;font-size:14px;font-weight:600;letter-spacing:-.005em;line-height:1;white-space:nowrap;text-decoration:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,opacity .2s}.lrn-pill-cta{background:var(--lt-cta);color:var(--lt-cta-text);box-shadow:0 6px 18px rgba(94,92,230,.22)}.lrn-pill-cta:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(94,92,230,.32)}.lrn-pill-ghost{background:var(--lt-card);color:var(--lt-ink);border-color:var(--lt-line-strong)}.lrn-pill-ghost:hover{border-color:var(--lt-accent-line);background:var(--lt-accent-soft)}.lrn-pill:disabled{opacity:.4;cursor:default;transform:none;box-shadow:none}.lrn-pill-sm{height:34px;padding:0 14px;font-size:13px}.lrn-main{flex:1 1;min-height:0;display:grid;grid-template-columns:360px minmax(0,1fr);grid-gap:40px;gap:40px;padding:24px 28px 20px;align-items:start}.lrn-side{min-width:0;display:flex;flex-direction:column;gap:22px;padding-top:4px}.lrn-h1{margin:0;font-size:28px;line-height:1.1;letter-spacing:-.025em;font-weight:600}.lrn-lead{margin:8px 0 0;font-size:14px;line-height:1.5;color:var(--lt-muted)}.lrn-steps{list-style:none;margin:0;padding:0;position:relative}.lrn-steps:before{content:"";bottom:24px;background:var(--lt-line)}.lrn-steps-progress,.lrn-steps:before{position:absolute;left:11px;top:24px;width:1px}.lrn-steps-progress{height:calc((100% - 48px) * var(--p, 0));background:linear-gradient(180deg,var(--lt-accent),var(--lt-accent-2));transition:height .5s ease}.lrn-step{position:relative}.lrn-step-btn{display:flex;align-items:center;gap:14px;width:100%;padding:12px 0;border:0;border-bottom:1px solid var(--lt-line);background:none;font:inherit;text-align:left;color:var(--lt-faint);cursor:pointer}.lrn-step.is-on .lrn-step-btn,.lrn-step:last-child .lrn-step-btn{border-bottom-color:transparent}.lrn-step-n{position:relative;z-index:1;width:23px;height:23px;flex:none;display:grid;place-items:center;border-radius:50%;border:1px solid var(--lt-line);background:var(--lt-bg);font-size:11px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--lt-faint);transition:color .3s,border-color .3s,box-shadow .3s}.lrn-step.is-done .lrn-step-n{color:var(--lt-text);border-color:var(--lt-line-strong)}.lrn-step.is-on .lrn-step-n{color:var(--lt-accent);border-color:var(--lt-accent);box-shadow:0 0 0 4px var(--lt-accent-soft)}.lrn-step-t{font-size:15px;font-weight:600;letter-spacing:-.01em;transition:color .3s}.lrn-step.is-done .lrn-step-t{color:var(--lt-text)}.lrn-step-btn:hover .lrn-step-t,.lrn-step.is-on .lrn-step-t{color:var(--lt-ink)}.lrn-step-copy{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s ease;border-bottom:1px solid var(--lt-line)}.lrn-step:last-child .lrn-step-copy{border-bottom:0}.lrn-step-copy>div{overflow:hidden;opacity:0;transition:opacity .3s}.lrn-step.is-on .lrn-step-copy{grid-template-rows:1fr}.lrn-step.is-on .lrn-step-copy>div{opacity:1;transition:opacity .4s .15s}.lrn-step-lead{margin:2px 0 0 37px;font-size:17px;line-height:1.4;font-weight:600;letter-spacing:-.012em;color:var(--lt-ink)}.lrn-step-sub{margin:6px 0 18px 37px;font-size:14px;line-height:1.5;color:var(--lt-muted)}.lrn-nav{display:flex;align-items:center;gap:10px}.lrn-count{margin-left:auto;font-size:12px;font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--lt-faint)}.lrn-stagewrap{min-width:0;display:flex;flex-direction:column;gap:8px;height:calc(100vh - var(--lrn-top) - 44px);height:calc(100svh - var(--lrn-top) - 44px);min-height:540px}.lrn-stage{position:relative;flex:1 1;min-height:0;min-width:0;display:flex;flex-direction:column;border:1px solid var(--lt-stage-line);border-radius:var(--lt-radius);background:var(--lt-stage);box-shadow:var(--lt-shadow);overflow:hidden}.lrn-provenance{margin:0;padding:0 4px;font-size:11px;font-weight:500;line-height:1.5;color:var(--lt-faint)}.lrn-stage-top{height:44px;flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 18px}.lrn-cap{min-width:0;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--lt-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lrn-cap .lrn-wordmark{font-size:13px;text-transform:none;letter-spacing:-.03em;vertical-align:-1px;margin:0 1px}.lrn-seg{flex:none;display:flex;padding:3px;border-radius:999px;border:1px solid var(--lt-pill-line);background:var(--lt-pill-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:lrn-rise .4s ease-out backwards}.lrn-seg button{height:28px;min-width:42px;padding:0 10px;border:0;border-radius:999px;background:none;font:inherit;font-size:12px;font-weight:700;color:var(--lt-muted);cursor:pointer;transition:background .2s,color .2s}.lrn-seg button:hover{color:var(--lt-ink)}.lrn-seg button[aria-pressed=true]{background:var(--lt-accent-soft);color:var(--lt-accent-ink)}.lrn-seg.is-invite{animation:lrn-pulse 1s ease-out .3s 2}.lrn-body{position:relative;flex:1 1;min-height:0;display:flex;align-items:center;justify-content:center}.lrn-fig{position:relative;height:100%;aspect-ratio:1/1;max-width:100%;transition:opacity .35s}.lrn-fig.is-hidden{opacity:0;pointer-events:none}.lrn-layer{position:absolute;inset:0;width:100%;height:100%;display:block;overflow:visible}.lrn-light{animation:lrn-fade-in .7s ease-out backwards}.lrn-mask-fill{fill:var(--lt-mask-fill);fill-opacity:var(--lt-mask-fill-a);stroke:none;animation:lrn-fade-in .6s ease-out backwards;transition:fill-opacity .6s}.lrn-fig[data-lit=true] .lrn-mask-fill{fill-opacity:.14}.lrn-mask-edge{stroke:var(--lt-mask-stroke);stroke-width:1.4;stroke-linejoin:round;stroke-linecap:round;stroke-dasharray:1 1;stroke-dashoffset:0;animation:lrn-draw .9s ease-out .1s backwards}.lrn-mask-edge,.lrn-target{fill:none;vector-effect:non-scaling-stroke}.lrn-target{stroke:var(--lt-target);stroke-width:2;stroke-dasharray:6 4.5;stroke-linecap:round;stroke-linejoin:round;animation:lrn-fade-in .5s ease-out 1s backwards}.lrn-contour{stroke:var(--lt-print);stroke-width:2.2;stroke-linejoin:round;stroke-dasharray:1 1;stroke-dashoffset:0;animation:lrn-draw .9s ease-out .25s backwards}.lrn-contour,.lrn-tick-glow{fill:none;stroke-linecap:round;vector-effect:non-scaling-stroke}.lrn-tick-glow{stroke-width:7;animation:lrn-glow 1.1s ease-out backwards;animation-delay:calc(.65s + var(--i, 0) * 35ms)}.lrn-tick-line{fill:none;stroke-width:2;stroke-linecap:round;stroke-dasharray:1 1;stroke-dashoffset:0;vector-effect:non-scaling-stroke;animation:lrn-draw .5s ease-out backwards;animation-delay:calc(.25s + var(--i, 0) * 35ms)}.lrn-tick-dot{fill:var(--lt-muted);animation:lrn-fade-in .3s ease-out backwards;animation-delay:calc(.2s + var(--i, 0) * 35ms)}.lrn-ring{fill:none;stroke:var(--lt-accent-2);stroke-width:1.5;vector-effect:non-scaling-stroke;transform-box:fill-box;transform-origin:center;opacity:0;animation:lrn-ring 1.9s ease-out 1.3s infinite}.lrn-pin{position:absolute;width:0;height:0;z-index:2;animation:lrn-pin-in .5s ease-out backwards;transition:opacity .4s}.lrn-pin.is-quiet{opacity:.6}.lrn-pin-dot{position:absolute;left:-4px;top:-4px;width:8px;height:8px;border-radius:50%;box-shadow:0 0 0 3px var(--lt-pill-bg)}.lrn-pin:before{content:"";position:absolute;background:var(--lt-line-strong)}.lrn-pin-label{position:absolute;padding:4px 10px;border-radius:999px;border:1px solid var(--lt-pill-line);background:var(--lt-pill-bg);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);font-size:12px;font-weight:600;line-height:1.2;white-space:nowrap;color:var(--lt-text)}.lrn-pin-up:before{left:-.5px;top:-20px;width:1px;height:14px}.lrn-pin-up .lrn-pin-label{left:50%;bottom:20px;transform:translateX(-50%)}.lrn-pin-down:before{left:-.5px;top:6px;width:1px;height:14px}.lrn-pin-down .lrn-pin-label{left:50%;top:20px;transform:translateX(-50%)}.lrn-pin-left:before{top:-.5px;left:-20px;width:14px;height:1px}.lrn-pin-left .lrn-pin-label{right:20px;top:50%;transform:translateY(-50%)}.lrn-hud{position:absolute;left:16px;bottom:14px;z-index:3;display:flex;align-items:flex-end;gap:10px}.lrn-chip{display:flex;flex-direction:column;gap:3px;padding:9px 14px;border-radius:14px;border:1px solid var(--lt-pill-line);background:var(--lt-pill-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:var(--lt-shadow);animation:lrn-rise .5s ease-out backwards}.lrn-chip-k{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--lt-faint)}.lrn-chip-v{font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.1;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--lt-ink)}.lrn-chip-v small{margin-left:3px;font-size:12px;font-weight:600;color:var(--lt-muted)}.lrn-readout.is-landed{animation:lrn-pulse .9s ease-out}.lrn-scale{gap:6px;animation-delay:.15s}.lrn-scale-bar{display:block;width:84px;height:6px;border-radius:3px}.lrn-scale-l{display:flex;justify-content:space-between;font-size:11px;font-weight:600;color:var(--lt-muted)}.lrn-spark svg{display:block;overflow:visible}.lrn-spark-line{fill:none;stroke:var(--lt-accent);stroke-width:2;stroke-linejoin:round;stroke-linecap:round;stroke-dasharray:1 1;transition:stroke-dashoffset .74s linear}.lrn-spark-dot{fill:var(--lt-accent);opacity:0;transition:opacity .3s,r .3s}.lrn-spark-dot.is-in{opacity:1}.lrn-spark-dot.is-on{fill:var(--lt-accent-2);filter:drop-shadow(0 0 4px var(--lt-pulse))}.lrn-spark-t{font-family:var(--lt-font);font-size:11px;font-weight:700;fill:var(--lt-text);transition:opacity .3s}.lrn-spark-t:not(:first-of-type){opacity:0}.lrn-spark-t.is-in{opacity:1}.lrn-foot{height:56px;flex:none;display:flex;align-items:center;gap:14px;padding:0 18px;border-top:1px solid var(--lt-stage-line)}.lrn-legend{display:flex;flex-wrap:wrap;gap:6px 18px}.lrn-legend span{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--lt-muted);opacity:0;transform:translateY(3px);transition:opacity .4s,transform .4s}.lrn-legend span.is-in{opacity:1;transform:none}.lrn-sw{display:inline-block;width:16px;height:2px;border-radius:1px}.lrn-sw-mask{width:14px;height:9px;border-radius:2px;background:var(--lt-mask-fill);opacity:.6;box-shadow:inset 0 0 0 1px var(--lt-mask-stroke)}.lrn-sw-print{background:var(--lt-print)}.lrn-sw-target{height:0;border-top:2px dashed var(--lt-target);border-radius:0}.lrn-sw-epe{background:linear-gradient(90deg,#9a9a9a,#5e5ce6 30%,#bf5af2 65%,#ff453a)}.lrn-scrub{flex:1 1;min-width:0;display:flex;align-items:center;gap:14px}.lrn-scrub-k{flex:none;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--lt-faint)}.lrn-scrub-track{position:relative;flex:1 1;max-width:280px;display:flex;justify-content:space-between;align-items:center}.lrn-scrub-track:before{content:"";position:absolute;left:11px;right:11px;top:50%;height:1px;background:var(--lt-line-strong)}.lrn-scrub-fill{position:absolute;left:11px;top:50%;height:2px;margin-top:-.5px;width:calc((100% - 22px) * var(--p, 0));background:linear-gradient(90deg,var(--lt-accent),var(--lt-accent-2));border-radius:1px;transition:width .74s linear}.lrn-scrub-track button{position:relative;z-index:1;width:22px;height:22px;padding:0;border-radius:50%;border:1px solid var(--lt-line-strong);background:var(--lt-card);font:inherit;font-size:11px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--lt-faint);cursor:pointer;transition:color .25s,border-color .25s,box-shadow .25s,transform .25s}.lrn-scrub-track button:hover{color:var(--lt-ink);border-color:var(--lt-accent-line)}.lrn-scrub-track button.is-done{color:var(--lt-text);border-color:var(--lt-accent-line)}.lrn-scrub-track button.is-on{color:var(--lt-accent);border-color:var(--lt-accent);box-shadow:0 0 0 4px var(--lt-accent-soft)}.lrn-scrub-track button:disabled{cursor:default}.lrn-replay{margin-left:auto;opacity:0;transform:translateX(6px);pointer-events:none;transition:opacity .3s,transform .3s}.lrn-replay.is-in{opacity:1;transform:none;pointer-events:auto}.lrn-replay svg{flex:none}.lrn-3d{position:absolute;inset:0;z-index:1;visibility:visible;opacity:1;transition:opacity .35s,visibility 0s}.lrn-3d.is-hidden{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .35s,visibility 0s linear .35s}.lrn-3d .m3d{position:absolute;inset:0}.lrn-3d .m3d-stage{border:0;background:none;box-shadow:none}.lrn-3d .m3d-image{mask-image:none;-webkit-mask-image:none}.lrn-3d .m3d-drag:focus-visible{outline:2px solid var(--lt-accent);outline-offset:-6px;border-radius:var(--lt-radius)}.lrn-3d-corner{position:absolute;right:16px;bottom:14px;z-index:3;display:flex;align-items:center;min-height:34px}.lrn-3d-hint{font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--lt-faint);animation:lrn-fade-in .5s ease-out .6s backwards}@keyframes lrn-fade-in{0%{opacity:0}to{opacity:1}}@keyframes lrn-draw{0%{stroke-dashoffset:1}to{stroke-dashoffset:0}}@keyframes lrn-pin-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}@keyframes lrn-rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes lrn-glow{0%{stroke-width:0;opacity:0}45%{stroke-width:16;opacity:1}to{stroke-width:7;opacity:1}}@keyframes lrn-ring{0%{transform:scale(.45);opacity:.95}to{transform:scale(1.9);opacity:0}}@keyframes lrn-pulse{0%{box-shadow:0 0 0 0 var(--lt-pulse)}to{box-shadow:0 0 0 16px transparent}}@media (prefers-reduced-motion:reduce){.lrn *,.lrn :after,.lrn :before{animation-duration:.001ms!important;animation-delay:0ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0ms!important}.lrn-ring{animation:none!important;opacity:.7}}@media (max-width:1023px){.lrn-main{grid-template-columns:1fr;gap:24px;padding:16px 16px 28px}.lrn-stagewrap{order:-1;height:auto;min-height:0}.lrn-stage{flex:none}.lrn-body{flex:none;flex-direction:column;width:100%;padding-bottom:0;transition:padding-bottom .4s ease}.lrn-stage[data-step="3"] .lrn-body,.lrn-stage[data-step="4"] .lrn-body{padding-bottom:104px}.lrn-fig{width:100%;height:auto;aspect-ratio:1/1}.lrn-side{padding-top:0}.lrn-hud{left:12px;right:12px;bottom:12px;gap:8px}.lrn-cap-src{display:none}.lrn-3d-corner{top:10px;right:12px;bottom:auto}.lrn-scrub-track{max-width:none}}@media (max-width:599px){.lrn-top{padding:0 16px;gap:8px}.lrn-crumb{display:none}.lrn-pill{padding:0 16px}.lrn-foot,.lrn-stage-top{padding:0 12px}.lrn-legend{gap:4px 12px}.lrn-chip{padding:7px 11px}.lrn-chip-v{font-size:19px}.lrn-nav .lrn-pill{flex:1 1}.lrn-count{display:none}}