@font-face{font-family:"Source Serif 4";src:url(../../../fonts/learn/source-serif-4.woff2)format("woff2");font-weight:200 900;font-style:normal;font-display:swap}@font-face{font-family:"Source Serif 4";src:url(../../../fonts/learn/source-serif-4-italic.woff2)format("woff2");font-weight:200 900;font-style:italic;font-display:swap}@font-face{font-family:"Source Sans 3";src:url(../../../fonts/learn/source-sans-3.woff2)format("woff2");font-weight:200 900;font-style:normal;font-display:swap}.learn-scope{--radius:.375rem;--primary:oklch(43% .09 152);--primary-foreground:oklch(98% .01 95);--ring:oklch(43% .09 152);--sidebar-primary:oklch(43% .09 152);--sidebar-primary-foreground:oklch(98% .01 95);--background:oklch(98.6% .006 95);--foreground:oklch(23% .014 152);--card:oklch(99.7% .003 95);--card-foreground:oklch(23% .014 152);--popover:oklch(99.7% .003 95);--popover-foreground:oklch(23% .014 152);--muted:oklch(95% .008 95);--muted-foreground:oklch(47% .02 150);--accent:oklch(94.5% .012 120);--accent-foreground:oklch(30% .03 150);--secondary:oklch(95.5% .01 95);--secondary-foreground:oklch(30% .03 150);--border:oklch(88% .012 120);--input:oklch(88% .012 120);--sidebar:oklch(97.5% .008 95);--sidebar-foreground:oklch(23% .014 152);--sidebar-accent:oklch(94.5% .012 120);--sidebar-accent-foreground:oklch(30% .03 150);--sidebar-border:oklch(88% .012 120);--sidebar-ring:oklch(43% .09 152);--learn-font-serif:"Source Serif 4", Georgia, "Times New Roman", serif;--learn-font-sans:"Source Sans 3", ui-sans-serif, system-ui, sans-serif;--learn-ink:oklch(23% .014 152);--learn-gold:oklch(62% .09 76);--learn-ease:cubic-bezier(.4, 0, .2, 1);--learn-shadow:0 1px 2px oklch(30% .03 150/.05), 0 12px 28px -16px oklch(30% .05 150/.16);--learn-shadow-lg:0 2px 6px oklch(30% .03 150/.06), 0 26px 60px -28px oklch(30% .06 150/.26);--learn-shadow-frame:0 1px 2px oklch(30% .03 150/.04), 0 18px 44px -22px oklch(30% .06 150/.22);--learn-inner-hi:inset 0 1px 0 0 oklab(100% 0 5.96046e-8/.6);--learn-ease-spring:cubic-bezier(.34, 1.4, .64, 1);font-family:var(--learn-font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility}.dark .learn-scope{--primary:oklch(62% .1 150);--primary-foreground:oklch(16% .02 150);--ring:oklch(62% .1 150);--sidebar-primary:oklch(62% .1 150);--sidebar-primary-foreground:oklch(16% .02 150);--background:oklch(18% .008 150);--foreground:oklch(95% .008 95);--card:oklch(21.5% .01 150);--card-foreground:oklch(95% .008 95);--popover:oklch(21.5% .01 150);--popover-foreground:oklch(95% .008 95);--muted:oklch(27% .012 150);--muted-foreground:oklch(72% .02 120);--accent:oklch(30% .015 150);--accent-foreground:oklch(95% .008 95);--secondary:oklch(27% .012 150);--secondary-foreground:oklch(95% .008 95);--border:oklch(100% 0 0/.11);--input:oklch(100% 0 0/.14);--sidebar:oklch(20% .009 150);--sidebar-foreground:oklch(95% .008 95);--sidebar-accent:oklch(30% .015 150);--sidebar-accent-foreground:oklch(95% .008 95);--sidebar-border:oklch(100% 0 0/.11);--sidebar-ring:oklch(62% .1 150);--learn-ink:oklch(95% .008 95);--learn-gold:oklch(72% .09 78);--learn-shadow:0 1px 2px oklch(0% 0 0/.4), 0 14px 36px -18px oklch(0% 0 0/.6);--learn-shadow-lg:0 2px 6px oklch(0% 0 0/.45), 0 30px 70px -30px oklch(0% 0 0/.7);--learn-shadow-frame:0 1px 2px oklch(0% 0 0/.4), 0 20px 48px -24px oklch(0% 0 0/.66);--learn-inner-hi:inset 0 1px 0 0 oklab(100% 0 5.96046e-8/.08)}.learn-scope :is(h1,h2,h3){font-family:var(--learn-font-serif);letter-spacing:-.01em;font-weight:600}.learn-serif{font-family:var(--learn-font-serif)}.learn-display{font-family:var(--learn-font-serif);letter-spacing:-.02em;font-weight:600;line-height:1.03}.learn-title-xl{font-size:clamp(2rem,1.25rem + 3vw,3.25rem);line-height:1.03}.learn-title-lg{font-size:clamp(1.6rem,1.15rem + 1.9vw,2.4rem);line-height:1.06}.learn-scope ::selection{background:color-mix(in oklab, var(--primary) 22%, transparent)}.learn-reading,.learn-scope .prose{font-family:var(--learn-font-serif);color:var(--foreground);font-feature-settings:"liga" 1, "onum" 1;font-weight:400;line-height:1.72}.learn-reading{max-width:68ch}.learn-reading :is(h1,h2,h3,h4),.learn-scope .prose :is(h1,h2,h3,h4){font-family:var(--learn-font-serif)}.learn-dropcap:first-letter{float:left;font-family:var(--learn-font-serif);color:var(--primary);margin:.02em .12em 0 0;font-size:3.4em;font-weight:600;line-height:.72}.learn-pullquote{font-family:var(--learn-font-serif);color:var(--foreground);border-left:2px solid var(--primary);padding-left:1.1rem;font-size:1.4rem;font-style:italic;line-height:1.45}.learn-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}.learn-rule{border:0;border-top:1px solid var(--border);margin:0}.learn-kicker{font-family:var(--learn-font-sans);text-transform:uppercase;letter-spacing:.16em;color:var(--muted-foreground);font-size:.7rem;font-weight:600;line-height:1;display:inline-block}.learn-tag{border-radius:calc(var(--radius) - 2px);font-family:var(--learn-font-sans);text-transform:uppercase;letter-spacing:.06em;color:var(--primary);background:color-mix(in oklab, var(--primary) 10%, transparent);border:1px solid color-mix(in oklab, var(--primary) 22%, transparent);align-items:center;gap:.35rem;padding:.2rem .5rem;font-size:.68rem;font-weight:600;line-height:1.1;display:inline-flex}.learn-tag-gold{color:var(--learn-gold);background:color-mix(in oklab, var(--learn-gold) 12%, transparent);border-color:color-mix(in oklab, var(--learn-gold) 26%, transparent)}.learn-gold-fg{color:var(--learn-gold)}.learn-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius)}.learn-hoverable{transition:transform .45s var(--learn-ease-spring), box-shadow .4s var(--learn-ease), border-color .3s var(--learn-ease)}.learn-hoverable:hover{box-shadow:var(--learn-shadow-frame);border-color:color-mix(in oklab, var(--primary) 32%, var(--border));transform:translateY(-3px)}.learn-frame{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--learn-inner-hi), var(--learn-shadow-frame);position:relative}.learn-frame:after{content:"";border:1px solid color-mix(in oklab, var(--border) 65%, transparent);border-radius:calc(var(--radius) - 3px);pointer-events:none;position:absolute;inset:4px}.learn-panel-raised{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--learn-inner-hi), var(--learn-shadow)}.learn-skeleton{background:color-mix(in oklab, var(--muted) 88%, var(--foreground) 4%);background-image:linear-gradient(90deg, transparent, color-mix(in oklab, var(--foreground) 6%, transparent), transparent);border-radius:calc(var(--radius) - 2px);background-repeat:no-repeat;background-size:200% 100%;animation:1.4s linear infinite learn-shimmer}@keyframes learn-shimmer{0%{background-position:-120% 0}to{background-position:220% 0}}.learn-enter{animation:learn-rise .5s var(--learn-ease) both}@keyframes learn-rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.learn-cta{border-radius:var(--radius);font-family:var(--learn-font-sans);white-space:nowrap;cursor:pointer;background:var(--primary);color:var(--primary-foreground);border:1px solid color-mix(in oklab, black 10%, var(--primary));transition:background-color .3s var(--learn-ease), box-shadow .3s var(--learn-ease), transform .2s var(--learn-ease);align-items:center;gap:.5rem;padding:.62rem 1.15rem;font-size:.925rem;font-weight:600;line-height:1.2;display:inline-flex}.learn-cta:hover{box-shadow:var(--learn-shadow);background:color-mix(in oklab, black 6%, var(--primary))}.learn-cta:active{transform:translateY(1px)}.learn-cta:focus-visible{outline:2px solid var(--ring);outline-offset:2px}.learn-cta-ghost{color:var(--foreground);border:1px solid var(--border);background:0 0}.learn-cta-ghost:hover{background:var(--accent);box-shadow:none}.learn-syllabus-item{border-radius:calc(var(--radius) - 1px);color:var(--sidebar-foreground);transition:background-color .25s var(--learn-ease), color .25s var(--learn-ease);align-items:center;gap:.7rem;padding:.5rem .7rem;font-size:.875rem;display:flex;position:relative}.learn-syllabus-item:hover{background:color-mix(in oklab, var(--sidebar-accent) 70%, transparent)}.learn-syllabus-item[data-active=true]{background:color-mix(in oklab, var(--primary) 10%, transparent);color:color-mix(in oklab, var(--primary) 70%, var(--foreground));font-weight:600}.learn-syllabus-item[data-active=true]:before{content:"";background:var(--primary);border-radius:0 2px 2px 0;width:3px;height:1.2rem;position:absolute;top:50%;left:0;transform:translateY(-50%)}.learn-grain:after{content:"";z-index:1;pointer-events:none;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");position:fixed;inset:0}@media (prefers-reduced-motion:reduce){.learn-cta,.learn-hoverable,.learn-syllabus-item{transition:none}.learn-hoverable:hover{transform:none}.learn-enter,.learn-skeleton{animation:none}}