:root{--ground:#faf9f7;--surface:#ffffff;--surface-sunk:#f3f1ed;--line:#e4e0d8;--line-strong:#cfc9bd;--ink:#1b1a17;--ink-dim:#57534e;--ink-faint:#7a746c;--danger:#a1121f;--step--1:1rem;--step-0:1.125rem;--step-1:clamp(1.2rem,1.1rem + 0.5vw,1.4rem);--step-2:clamp(1.4rem,1.25rem + 0.8vw,1.75rem);--step-3:clamp(1.7rem,1.45rem + 1.3vw,2.25rem);--step-4:clamp(2rem,1.6rem + 2vw,3rem);--font-display:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Noto Serif",serif;--font-ui:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--measure:68ch;--radius:12px;--radius-lg:16px;--radius-pill:999px;--shadow-sm:0 1px 2px rgba(27,26,23,0.06),0 1px 3px rgba(27,26,23,0.05);--shadow-md:0 2px 4px rgba(27,26,23,0.06),0 8px 20px rgba(27,26,23,0.08);--gap:1.5rem;--brand-primary:var(--ink);--brand-primary-text:var(--ink);--brand-accent:var(--surface-sunk);--brand-accent-text:var(--ink);--brand-on-accent:var(--ink);--brand-on-primary:var(--surface)}html{box-sizing:border-box}*,:after,:before{box-sizing:inherit}img{max-width:100%}.card,.card-grid>li,.gallery>figure,.row-title,.stack>li{min-width:0}.row-title{overflow-wrap:break-word}body{background:var(--ground);color:var(--ink);font-family:var(--font-ui);font-size:var(--step-0);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{font-family:var(--font-display);line-height:1.2;letter-spacing:-.01em;text-wrap:balance}a{color:var(--brand-accent-text)}:where(a,button,[tabindex]):focus-visible{outline:3px solid var(--brand-accent-text);outline-offset:3px;border-radius:4px}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}.shell{min-height:100vh;display:flex;flex-direction:column}.shell-header{background:var(--brand-primary);color:var(--brand-on-primary);border-bottom:4px solid var(--brand-accent)}.shell-header-inner{justify-content:space-between;gap:1rem;padding:.9rem 1.25rem;max-width:76rem;margin:0 auto}.shell-header-inner,.shell-nav{display:flex;align-items:center;flex-wrap:wrap}.shell-nav{gap:.35rem}.shell-nav a{color:inherit;text-decoration:none;font-weight:600;font-size:var(--step--1);padding:.45rem .85rem;border-radius:var(--radius-pill);border:1px solid transparent}.shell-nav a:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28)}.shell-nav a[aria-current=page]{background:var(--brand-accent);color:var(--brand-on-accent)}.shell-account{display:inline-flex;align-items:center;gap:.5rem;margin-left:.35rem;padding-left:.6rem;border-left:1px solid rgba(255,255,255,.24)}.shell-account-name{font-weight:600;font-size:var(--step--1);max-width:12ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.shell-account-link,.shell-account-signout{font:inherit;font-size:var(--step--1);font-weight:600;color:inherit;text-decoration:none;background:transparent;padding:.45rem .85rem;border-radius:var(--radius-pill);border:1px solid rgba(255,255,255,.28);cursor:pointer}.shell-account-link:hover,.shell-account-signout:hover{background:rgba(255,255,255,.14)}.shell-main{flex:1 1;width:100%;max-width:48rem;margin:0 auto;padding:2.5rem 1.25rem 4rem}.shell-main--wide{max-width:76rem}.shell-footer{border-top:1px solid var(--line);background:var(--surface);padding:2rem 1.25rem;font-size:var(--step--1);color:var(--ink-dim)}.shell-footer-inner{max-width:76rem;margin:0 auto;display:flex;flex-wrap:wrap;gap:.75rem 1.5rem;align-items:center;justify-content:space-between}.page-head{margin-bottom:2.5rem}.page-head h1{font-size:var(--step-4);color:var(--brand-primary-text);margin:0 0 .5rem}.page-head .lede{margin:0;color:var(--ink-dim);font-size:var(--step-1)}.eyebrow{font-family:var(--font-ui);font-size:.8rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .5rem}.crumbs{font-size:var(--step--1);color:var(--ink-dim);margin-bottom:1.25rem;display:flex;flex-wrap:wrap;gap:.4rem;align-items:baseline}.crumbs a{color:var(--brand-accent-text);font-weight:600;text-decoration:none}.crumbs a:hover{text-decoration:underline}.crumbs .sep{color:var(--line-strong)}.crumbs .here{color:var(--ink-faint);max-width:32ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-grid{list-style:none;padding:0;margin:0;display:grid;grid-gap:var(--gap);gap:var(--gap);grid-template-columns:repeat(auto-fill,minmax(19rem,1fr))}.card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:transform .14s ease,box-shadow .14s ease,border-color .14s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}.card-cover{aspect-ratio:16/9;background:var(--surface-sunk);overflow:hidden}.card-cover img{width:100%;height:100%;object-fit:cover;object-position:center 32%;display:block}.card-cover--empty{background:linear-gradient(135deg,var(--brand-primary),var(--brand-accent));opacity:.85}.card-body{padding:1.15rem 1.35rem 1.35rem;display:flex;flex-direction:column;gap:.4rem;flex:1 1}.card-body h2,.card-body h3{margin:0;font-size:var(--step-2);color:var(--brand-primary-text)}.card-excerpt{margin:0;color:var(--ink-dim);font-size:var(--step--1);line-height:1.55}.card-meta{margin:auto 0 0;padding-top:.6rem;color:var(--ink-faint);font-size:.95rem}.stack{list-style:none;padding:0;margin:0;flex-direction:column;gap:.75rem}.row,.stack{display:flex}.row{align-items:center;gap:.9rem;padding:.9rem 1.1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit;transition:border-color .14s ease,box-shadow .14s ease,background .14s ease}.row:hover{border-color:var(--brand-accent);box-shadow:var(--shadow-sm)}.row-title{font-weight:600;line-height:1.35}.row-meta{margin-left:auto;padding-left:.75rem;color:var(--ink-faint);font-size:.95rem;white-space:nowrap}.row-mark{flex:0 0 auto;width:2rem;height:2rem;display:grid;place-items:center;border-radius:var(--radius-pill);border:2px solid var(--line-strong);color:var(--ink-faint);font-size:.95rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.row--done{background:color-mix(in srgb,var(--brand-accent) 12%,var(--surface));border-color:color-mix(in srgb,var(--brand-accent) 45%,var(--line))}.row--done .row-mark{background:var(--brand-primary);border-color:var(--brand-primary);color:var(--brand-on-primary)}.section-group+.section-group{margin-top:2rem}.lessons-heading{font-size:var(--step-2);color:var(--ink);margin:0 0 1.25rem}.section-heading{font-size:var(--step-1);color:var(--ink);margin:0 0 .75rem;padding-bottom:.4rem;border-bottom:2px solid var(--line)}.section-heading .count{font-family:var(--font-ui);font-size:.9rem;font-weight:600;color:var(--ink-faint);margin-left:.6rem;letter-spacing:.02em}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.35rem 1.5rem;box-shadow:var(--shadow-sm)}.panel--sunk{background:var(--surface-sunk);box-shadow:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.4rem;border-radius:var(--radius);border:2px solid transparent;font-family:var(--font-ui);font-size:var(--step--1);font-weight:700;line-height:1.2;text-decoration:none;cursor:pointer;transition:filter .14s ease,box-shadow .14s ease,transform .14s ease}.btn:hover:not(:disabled){filter:brightness(.94);box-shadow:var(--shadow-md)}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{cursor:wait;opacity:.7}.btn--accent{background:var(--brand-accent);color:var(--brand-on-accent)}.btn--primary{background:var(--brand-primary);color:var(--brand-on-primary)}.btn--ghost{background:var(--surface);color:var(--ink);border-color:var(--line-strong)}.lesson-nav{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--line)}.lesson-nav-row{display:flex;gap:1rem;justify-content:space-between}.nav-btn{display:flex;flex-direction:column;gap:.15rem;flex:1 1;min-width:0;max-width:48%;padding:.75rem 1.15rem;border-radius:var(--radius);border:2px solid transparent;text-align:left;text-decoration:none;cursor:pointer;font-family:var(--font-ui);transition:filter .14s ease,box-shadow .14s ease}.nav-btn:hover{filter:brightness(.96);box-shadow:var(--shadow-md)}.nav-btn--ghost{background:var(--surface);color:var(--ink);border-color:var(--line-strong);align-items:flex-start;box-shadow:var(--shadow-sm)}.nav-btn--primary{background:var(--brand-primary);color:var(--brand-on-primary);align-items:flex-end;text-align:right;box-shadow:var(--shadow-sm)}.nav-btn .label{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;opacity:.85}.nav-btn .title{font-size:var(--step--1);font-weight:600;line-height:1.3;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nudge{margin-top:1.25rem;padding:1.15rem 1.35rem;border-radius:var(--radius);background:var(--surface-sunk);border:1px solid var(--line)}.nudge p{margin:0 0 .9rem}.nudge-actions{display:flex;gap:.75rem;flex-wrap:wrap}.btn--quiet{background:transparent;color:var(--ink-dim);border-color:transparent;font-weight:600}.btn--quiet:hover:not(:disabled){background:var(--surface);box-shadow:none}@media (max-width:34rem){.lesson-nav-row{flex-direction:column}.nav-btn{max-width:100%}.nav-btn--primary{align-items:flex-start;text-align:left}}.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:0;padding:0;list-style:none}.chip{display:inline-block;padding:.15rem .7rem;border-radius:var(--radius-pill);border:1px solid var(--line-strong);font-size:.9rem;font-weight:600;color:var(--ink-dim)}.chip,.progress-track{background:var(--surface-sunk)}.progress-track{border:1px solid var(--line);height:14px;overflow:hidden}.progress-fill,.progress-track{border-radius:var(--radius-pill)}.progress-fill{height:100%;background:var(--brand-primary);transition:width .24s ease}.progress-label{margin:.6rem 0 0;font-size:var(--step--1);color:var(--ink-dim);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.video-frame{position:relative;padding-top:56.25%;background:#000;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.media-heading{font-size:var(--step-0);font-weight:600;letter-spacing:.01em;margin:0 0 .5rem;color:var(--ink)}.media-heading__of{font-weight:400;color:var(--ink-dim)}.audio-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}.audio-frame iframe{display:block;width:100%;height:166px;border:0}.pdf{margin-bottom:2rem}.pdf-frame{height:min(85vh,62rem);background:var(--surface-sunk);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}.pdf-frame iframe{display:block;width:100%;height:100%;border:0}.pdf-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-top:1rem}.pdf-actions__note{display:none;width:100%;margin:0;color:var(--ink-dim);font-size:var(--step--1)}@media (max-width:48rem){.pdf-frame{display:none}.pdf-actions__note{display:block}}.gallery{display:grid;grid-gap:1rem;gap:1rem;grid-template-columns:1fr;margin:0;padding:0}@media (min-width:34rem){.gallery--multi{grid-template-columns:repeat(auto-fit,minmax(16rem,1fr))}}.gallery figure{margin:0}.gallery img{width:100%;height:auto;max-height:30rem;object-fit:contain;display:block;border-radius:var(--radius);background:var(--surface-sunk)}.gallery a:hover img{outline:2px solid var(--brand-accent);outline-offset:2px}.members-only{max-width:var(--measure);margin:0 0 3rem}.members-only__heading{margin:0 0 1rem;font-size:var(--step-1);color:var(--brand-primary-text)}.members-only p{margin:0 0 .9rem;font-size:var(--step-0);line-height:1.6}.members-only p:last-of-type{margin-bottom:0}.members-only a:not(.btn){color:var(--brand-accent-text);text-decoration:underline;text-underline-offset:2px}.members-only__cta{margin-top:1.4rem}.members-only--free{border:2px solid var(--brand-primary)}.org-identity{display:flex;align-items:center}.org-identity__mark{display:block;height:48px;width:auto;max-width:100%}.org-identity--compact .org-identity__mark{height:34px}.course-media{display:flex;flex-direction:column;gap:2rem;max-width:var(--measure);margin:0 0 3rem}.course-media__item{margin:0;min-width:0}.course-media__item img{display:block;width:100%;height:auto;border-radius:var(--radius)}.course-media__item a{display:inline-block;border:0;text-decoration:none}.course-media__item a:hover img{outline:2px solid var(--brand-accent);outline-offset:3px}.course-media__item p{margin:.5rem 0 0;font-size:.95rem;line-height:1.5;color:var(--ink-faint)}.prose{max-width:var(--measure);font-size:var(--step-0);line-height:1.7;color:var(--ink)}.prose>:first-child{margin-top:0}.prose>:last-child{margin-bottom:0}.prose img{display:block;max-width:100%;height:auto;border-radius:var(--radius);margin:1.75rem 0 .75rem}.prose a:has(>img){display:block;border:0;text-decoration:none}.prose a:has(>img) img{max-height:calc(var(--measure) * 9 / 16);width:auto;margin-inline:auto}.prose a:has(>img)+p,.prose img+p{margin-top:0;font-size:.95em;line-height:1.5;color:var(--ink-faint)}.prose p{margin:0 0 1.15em}.prose h2{font-size:var(--step-2);margin:2em 0 .6em;color:var(--brand-primary-text)}.prose h3{font-size:var(--step-1);margin:1.8em 0 .5em;color:var(--ink)}.prose h4{font-size:var(--step-0);margin:1.6em 0 .4em;color:var(--ink)}.prose ol,.prose ul{margin:0 0 1.15em;padding-left:1.4em}.prose li{margin-bottom:.4em}.prose li::marker{color:var(--brand-accent-text)}.prose a{color:var(--brand-accent-text);text-decoration-thickness:1px;text-underline-offset:2px}.prose strong{font-weight:700}.prose em{color:var(--ink-dim)}.prose a,.prose p{overflow-wrap:break-word}.empty-note,.muted{color:var(--ink-dim)}.empty-note{font-style:italic}.pagination{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--line);font-size:var(--step--1)}.pagination a{font-weight:700;text-decoration:none}.pagination a:hover{text-decoration:underline}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width:34rem){.shell-main{padding:1.75rem 1rem 3rem}.row{align-items:flex-start}.row-meta{margin-left:0;padding-left:0}}.progress-split{display:flex;flex-wrap:wrap;gap:.5rem;margin:.85rem 0 0;color:var(--ink-dim);font-size:var(--step--1)}.filter-bar{background:var(--surface-sunk);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.25rem;margin:0 0 1.5rem}.filter-bar__form{display:flex;flex-wrap:wrap;align-items:flex-end;gap:1rem}.filter-bar__field{display:flex;flex-direction:column;gap:.3rem;font-size:var(--step--1);font-weight:600;min-width:0}.filter-bar__field select{font:inherit;font-size:var(--step-0);font-weight:400;padding:.5rem .65rem;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface);color:var(--ink);min-height:44px}.filter-bar__actions{gap:.6rem}.filter-bar__actions,.filter-bar__sorts{display:flex;align-items:center;flex-wrap:wrap}.filter-bar__sorts{gap:.5rem;margin-top:1rem;padding-top:.9rem;border-top:1px solid var(--line)}.filter-bar__sorts-label{color:var(--ink-dim)}.filter-bar__sorts-label,.sort-link{font-size:var(--step--1);font-weight:600}.sort-link{display:inline-flex;align-items:center;gap:.35rem;padding:.4rem .75rem;min-height:40px;border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:var(--surface);color:var(--ink);text-decoration:none}.sort-link:hover{border-color:var(--brand-primary);background:var(--ground)}.sort-link--active{border-color:var(--brand-primary);background:var(--brand-primary);color:var(--brand-on-primary)}.sort-link__dir{font-size:.8em}.result-count{margin:0 0 1.25rem;color:var(--ink-dim);font-size:var(--step--1)}.progress-grid{list-style:none;margin:0 0 2.5rem;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,20rem),1fr));grid-gap:var(--gap);gap:var(--gap)}.progress-card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.15rem 1.25rem 1.25rem;display:flex;flex-direction:column;gap:.85rem}.progress-card--done{border-color:var(--brand-primary);background:var(--ground)}.progress-card__head{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem}.progress-card__title{margin:0;font-size:var(--step-1);line-height:1.25;min-width:0;overflow-wrap:break-word}.progress-card__title a{color:var(--ink);text-decoration:none}.progress-card__title a:hover{color:var(--brand-accent-text);text-decoration:underline}.progress-card__resume{align-self:flex-start}.badge{flex:0 0 auto;padding:.2rem .6rem;border-radius:var(--radius-pill);font-size:.8rem;font-weight:700;letter-spacing:.02em;white-space:nowrap;border:1px solid var(--line-strong);color:var(--ink-dim);background:var(--surface-sunk)}.badge--completed{border-color:var(--brand-primary);color:var(--brand-primary-text);background:var(--surface)}.badge--incomplete{border-color:var(--brand-accent);color:var(--brand-accent-text);background:var(--surface)}@media (max-width:34rem){.filter-bar__form{flex-direction:column;align-items:stretch}.filter-bar__actions{margin-top:.25rem}}.notice{margin:0 0 1rem;padding:.75rem 1rem;border-radius:var(--radius);border-left:4px solid var(--line-strong);background:var(--surface-sunk);line-height:1.5}.notice--warn{border-left-color:var(--danger)}.editor-form{display:grid;grid-gap:1.5rem;gap:1.5rem;max-width:48rem}.editor-field{display:grid;grid-gap:.4rem;gap:.4rem}.editor-field>.editor-label,.editor-field>label{font-weight:700;font-size:1.125rem}.editor-hint{color:var(--ink-dim);font-size:1rem;line-height:1.5;margin:0}.editor-field input[type=text],.editor-field input[type=url],.editor-field select,.editor-field textarea{font:inherit;font-size:1.125rem;line-height:1.5;padding:.65rem .8rem;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);color:var(--ink);width:100%;box-sizing:border-box}.editor-field textarea{min-height:18rem;resize:vertical}.editor-field input:focus-visible,.editor-field select:focus-visible,.editor-field textarea:focus-visible{outline:3px solid var(--brand-primary,var(--ink));outline-offset:1px}.editor-field [aria-invalid=true]{border-color:var(--danger);border-width:2px}.editor-error{color:var(--danger);font-weight:600;font-size:1rem;margin:0}.editor-toolbar{display:flex;flex-wrap:wrap;gap:.5rem}.editor-toolbar button{font:inherit;font-size:1rem;min-width:2.75rem;min-height:2.75rem;padding:.35rem .8rem;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-sunk);color:var(--ink);cursor:pointer}.editor-toolbar button:hover{background:var(--line)}.editor-preview{border:1px dashed var(--line-strong);border-radius:var(--radius);padding:1rem 1.25rem;background:var(--surface)}.editor-actions{display:flex;flex-wrap:wrap;gap:1rem;align-items:center}.editor-list{list-style:none;padding:0;margin:0;display:grid;grid-gap:.5rem;gap:.5rem}.editor-list li{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between;padding:.75rem 1rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);font-size:1.125rem}.editor-list form{display:inline}.editor-badge{font-size:.95rem;padding:.1rem .55rem;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-dim);white-space:nowrap}.notice--ok{border-left-color:var(--brand-primary,var(--line-strong))}