.journey-list[data-astro-cid-5wyzvbtx] ol[data-astro-cid-5wyzvbtx]{margin:0;padding:0;list-style:none;position:relative}.journey-list[data-astro-cid-5wyzvbtx] ol[data-astro-cid-5wyzvbtx]:before{content:"";top:1.75rem;bottom:1.75rem;left:calc(3.25rem + var(--nori-space-4) + .6875rem - .5px);border-left:1px solid var(--nori-ink);position:absolute}.journey-row[data-astro-cid-5wyzvbtx] a[data-astro-cid-5wyzvbtx],.journey-row-inner[data-astro-cid-5wyzvbtx]{align-items:center;column-gap:var(--nori-space-4);min-height:var(--nori-touch-min);padding:var(--nori-space-3) 0;color:var(--nori-ink);grid-template-columns:3.25rem 1.375rem 1fr;text-decoration:none;display:grid}.journey-row[data-astro-cid-5wyzvbtx] a[data-astro-cid-5wyzvbtx]:hover .journey-title[data-astro-cid-5wyzvbtx]{text-decoration:underline}.journey-number[data-astro-cid-5wyzvbtx]{font:400 2rem/1 var(--nori-font-display)}.current[data-astro-cid-5wyzvbtx] .journey-number[data-astro-cid-5wyzvbtx]{font-size:2.5rem;font-weight:700}.journey-marker[data-astro-cid-5wyzvbtx]{border:1.5px solid var(--nori-ink);background:inherit;background-color:var(--nori-gold);border-radius:50%;width:1.375rem;height:1.375rem;position:relative}.current[data-astro-cid-5wyzvbtx] .journey-marker[data-astro-cid-5wyzvbtx]{background:var(--nori-blue-on-gold);border-color:var(--nori-blue-on-gold)}.journey-text[data-astro-cid-5wyzvbtx]{flex-direction:column;display:flex}.journey-title[data-astro-cid-5wyzvbtx]{font-weight:500;line-height:1.35}.journey-status[data-astro-cid-5wyzvbtx]{color:var(--nori-ink);font-size:.875rem}.current[data-astro-cid-5wyzvbtx] .journey-status[data-astro-cid-5wyzvbtx]{color:var(--nori-blue-on-gold);font-weight:600}.planned[data-astro-cid-5wyzvbtx] .journey-title[data-astro-cid-5wyzvbtx]{font-weight:400}@media (width>=900px) and (width<=1099px){.journey-row[data-astro-cid-5wyzvbtx] a[data-astro-cid-5wyzvbtx],.journey-row-inner[data-astro-cid-5wyzvbtx]{column-gap:var(--nori-space-2);grid-template-columns:2.25rem 1.125rem 1fr}.journey-list[data-astro-cid-5wyzvbtx] ol[data-astro-cid-5wyzvbtx]:before{left:calc(2.25rem + var(--nori-space-2) + .5625rem - .5px)}.journey-number[data-astro-cid-5wyzvbtx]{font-size:1.5rem}.current[data-astro-cid-5wyzvbtx] .journey-number[data-astro-cid-5wyzvbtx]{font-size:1.875rem}.journey-marker[data-astro-cid-5wyzvbtx]{width:1.125rem;height:1.125rem}.journey-title[data-astro-cid-5wyzvbtx]{font-size:.9375rem}}.practice{margin:var(--nori-space-12) 0}.practice h2{margin-bottom:var(--nori-space-2)}.practice-instructions{color:var(--nori-ink)}.practice-count{color:var(--nori-muted);margin-bottom:var(--nori-space-4);font-size:.875rem}.practice-prompt{margin:var(--nori-space-6) 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svg{background:var(--nori-control-border)}.audio-note{color:var(--nori-muted);margin:0;font-size:.875rem}.choices{gap:var(--nori-space-2);border:0;grid-template-columns:repeat(auto-fit,minmax(6rem,1fr));margin:0;padding:0;display:grid}@media (width>=900px){.choices{gap:var(--nori-space-4)}}.choices[disabled]{opacity:.55}.choice{min-height:7rem;padding:var(--nori-space-4) var(--nori-space-2);border:2px solid var(--nori-control-border);border-radius:var(--nori-radius-answer);background:var(--nori-paper);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;display:flex;position:relative}.choice input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.choice:has(input:focus-visible){outline:3px solid var(--nori-ink);outline-offset:3px}.choice-glyph{font:500 clamp(3rem, 12vw, 4rem)/1.2 var(--nori-font-body)}@media (width>=900px){.choice-glyph{font-size:clamp(4.5rem,5vw,6rem)}}.choice-state{font-size:.875rem;font-weight:600}.choice[data-state=selected]{background:var(--nori-selected);border-color:var(--nori-selected-border)}.choice[data-state=selected] .choice-state{color:var(--nori-selected-border)}.choice[data-state=correct]{border-color:var(--nori-success);border-width:3px}.choice[data-state=correct] .choice-state{color:var(--nori-success)}.choice[data-state=retry]{border-color:var(--nori-error);border-width:3px}.choice[data-state=retry] .choice-state{color:var(--nori-error)}.practice-feedback{min-height:1.6em;margin:var(--nori-space-4) 0;font-weight:500}.practice-feedback[data-state=correct]{color:var(--nori-success)}.practice-feedback[data-state=retry]{color:var(--nori-error)}.practice-actions{align-items:center;gap:var(--nori-space-2);flex-wrap:wrap;display:flex}@media (width<=899px){.practice-actions{flex-direction:column-reverse;align-items:stretch}.practice-actions .btn-check{width:100%}.practice-actions .btn-text{align-self:flex-start}}.practice-summary{font-weight:500}.shell[data-astro-cid-ohwqzt66]{min-height:100vh}.brand[data-astro-cid-ohwqzt66]{color:var(--nori-ink);flex-direction:column;text-decoration:none;display:inline-flex}.brand-name[data-astro-cid-ohwqzt66]{font:400 1.75rem/1.1 var(--nori-font-display);text-transform:uppercase;letter-spacing:.02em}.brand-tag[data-astro-cid-ohwqzt66]{letter-spacing:.18em;text-transform:uppercase;margin-top:var(--nori-space-1);font-size:.6875rem}.journey[data-astro-cid-ohwqzt66],.site-menu[data-astro-cid-ohwqzt66]{display:none}.mobile-top[data-astro-cid-ohwqzt66]{justify-content:space-between;align-items:flex-start;gap:var(--nori-space-4);padding:var(--nori-space-4) 1.25rem 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var(--nori-selected-border);background:var(--nori-selected);padding:var(--nori-space-3) var(--nori-space-4);font-size:.9375rem}.lesson-next[data-astro-cid-ohwqzt66]{margin-top:var(--nori-space-12);padding-top:var(--nori-space-6);border-top:1px solid var(--nori-rule);text-align:right}.lesson-next[data-astro-cid-ohwqzt66] a[data-astro-cid-ohwqzt66]{font-weight:500;text-decoration:none}.lesson-next[data-astro-cid-ohwqzt66] a[data-astro-cid-ohwqzt66]:hover{text-decoration:underline}.lesson-next-planned[data-astro-cid-ohwqzt66]{color:var(--nori-muted)}.bottom-nav[data-astro-cid-ohwqzt66]{z-index:10;height:calc(var(--nori-bottom-nav-height) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:var(--nori-gold);grid-template-columns:repeat(3,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.bottom-nav[data-astro-cid-ohwqzt66]>[data-astro-cid-ohwqzt66]{cursor:pointer;color:var(--nori-ink);font:500 .9375rem/1.2 var(--nori-font-body);background:0 0;border:0;flex-direction:column;justify-content:center;align-items:center;gap:2px;text-decoration:none;display:flex}.bottom-nav[data-astro-cid-ohwqzt66].no-practice{grid-template-columns:repeat(2,1fr)}.bottom-nav[data-astro-cid-ohwqzt66] .active[data-astro-cid-ohwqzt66]{box-shadow:inset 0 -3px 0 var(--nori-ink);font-weight:700}.course-dialog[data-astro-cid-ohwqzt66]{width:min(32rem,100vw);max-width:100vw;height:100dvh;max-height:100dvh;padding:var(--nori-space-6) 1.25rem;background:var(--nori-gold);color:var(--nori-ink);border:0;margin:0 0 0 auto}.course-dialog[data-astro-cid-ohwqzt66]::backdrop{background:#1c232873}.course-dialog-head[data-astro-cid-ohwqzt66]{margin-bottom:var(--nori-space-6);justify-content:space-between;align-items:center;display:flex}.course-dialog[data-astro-cid-ohwqzt66] .btn-text[data-astro-cid-ohwqzt66]{color:var(--nori-blue-on-gold)}@media (width>=900px){.shell[data-astro-cid-ohwqzt66]{grid-template-columns:14rem 1fr;display:grid}.mobile-top[data-astro-cid-ohwqzt66],.chapter-strip[data-astro-cid-ohwqzt66],.bottom-nav[data-astro-cid-ohwqzt66]{display:none}.journey[data-astro-cid-ohwqzt66]{background:var(--nori-gold);height:100vh;padding:var(--nori-space-8) var(--nori-space-4) var(--nori-space-8) var(--nori-space-6);display:block;position:sticky;top:0;overflow:hidden auto}.journey[data-astro-cid-ohwqzt66] .brand[data-astro-cid-ohwqzt66]{margin-bottom:var(--nori-space-12)}.journey[data-astro-cid-ohwqzt66] .brand-name[data-astro-cid-ohwqzt66]{font-size:1.375rem}.journey[data-astro-cid-ohwqzt66] .brand-tag[data-astro-cid-ohwqzt66]{letter-spacing:.12em;font-size:.625rem}.site-menu[data-astro-cid-ohwqzt66]{border-bottom:1px solid var(--nori-rule);padding:0 var(--nori-space-12);display:block}.site-menu[data-astro-cid-ohwqzt66] ul[data-astro-cid-ohwqzt66]{justify-content:flex-end;gap:var(--nori-space-8);margin:0;padding:0;list-style:none;display:flex}.site-menu[data-astro-cid-ohwqzt66] a[data-astro-cid-ohwqzt66]{min-height:4rem;color:var(--nori-ink);align-items:center;font-weight:500;text-decoration:none;display:inline-flex}.site-menu[data-astro-cid-ohwqzt66] a[data-astro-cid-ohwqzt66][aria-current]{box-shadow:inset 0 -3px 0 var(--nori-blue)}.lesson[data-astro-cid-ohwqzt66]{padding:var(--nori-space-8) var(--nori-space-12) var(--nori-space-16)}}@media (width>=1100px){.shell[data-astro-cid-ohwqzt66]{grid-template-columns:var(--nori-journey-width) 1fr}.journey[data-astro-cid-ohwqzt66]{padding-left:var(--nori-space-8)}.journey[data-astro-cid-ohwqzt66] .brand-name[data-astro-cid-ohwqzt66]{font-size:1.75rem}.journey[data-astro-cid-ohwqzt66] .brand-tag[data-astro-cid-ohwqzt66]{letter-spacing:.18em;font-size:.6875rem}}.equation[data-astro-cid-o2ede5fv]{justify-content:flex-start;align-items:flex-start;gap:var(--nori-space-4) var(--nori-space-6);margin:var(--nori-space-8) 0;flex-wrap:wrap;display:flex}.equation-part[data-astro-cid-o2ede5fv]{align-items:center;gap:var(--nori-space-2);flex-direction:column;display:flex}.equation-glyph[data-astro-cid-o2ede5fv]{font:600 clamp(2.75rem, 12vw, 3.5rem)/1.25 var(--nori-font-body)}.equation-op[data-astro-cid-o2ede5fv]{font:400 clamp(2rem, 8vw, 2.75rem)/1.6 var(--nori-font-body);color:var(--nori-ink)}.equation-label[data-astro-cid-o2ede5fv]{padding:.125rem var(--nori-space-2);color:var(--nori-ink);background:#ecebe6;border-radius:2px;font-size:.875rem}@media (width>=900px){.equation[data-astro-cid-o2ede5fv]{gap:var(--nori-space-4) var(--nori-space-12)}.equation-glyph[data-astro-cid-o2ede5fv]{font-size:clamp(4rem,5vw,5.5rem)}.equation-op[data-astro-cid-o2ede5fv]{font-size:3rem;line-height:1.7}}.lesson-category[data-astro-cid-5qwlr5i4]{margin:0 0 var(--nori-space-1);font-size:1.25rem;font-weight:500}h1[data-astro-cid-5qwlr5i4]{margin-bottom:var(--nori-space-4)}.lesson-body[data-astro-cid-5qwlr5i4]{max-width:44rem}.lesson-body[data-astro-cid-5qwlr5i4] h2{margin:var(--nori-space-12) 0 var(--nori-space-3)}