.ac{--ac-measure:65ch}.ac-chips{flex-wrap:wrap;gap:6px;display:flex}.ac-chips span{box-shadow:inset 0 0 0 1px var(--line);color:var(--muted);border-radius:999px;padding:2px 9px;font-size:12px;font-weight:500}.ac-bar{background:var(--line);border-radius:999px;height:3px;display:block;position:relative;overflow:hidden}.ac-bar>span{background:var(--ink);border-radius:inherit;transition:width .3s;position:absolute;inset:0 auto 0 0}.ac-linkbtn{font:inherit;color:var(--ink);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.ac :is(label,.ac-start,.ac-card,.ac-nc):focus-visible,.ac input:focus-visible+.ac-done-box{outline:2px solid var(--ink);outline-offset:3px}.ac-hero{align-items:center;gap:40px;padding-top:clamp(48px,8vw,104px);padding-bottom:32px;display:grid}@media (min-width:960px){.ac-hero{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px}}.ac-hero-text h1{text-wrap:balance;letter-spacing:-.045em;max-width:14ch;font-size:clamp(2.5rem,5.6vw,4.5rem);font-weight:600;line-height:1}.ac-facts{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:18px;font-size:14px}.ac-resume{border-top:1px solid var(--line);gap:2px;max-width:34rem;margin-top:22px;padding-top:14px;font-size:15px;display:grid}.ac-resume-label{color:var(--muted);font-size:12px;font-weight:500}.ac-resume a{text-decoration:underline;-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line);text-underline-offset:4px;font-weight:600}.ac-resume a:hover{-webkit-text-decoration-color:var(--ink);text-decoration-color:var(--ink)}.ac-start{box-shadow:inset 0 0 0 1px var(--line);color:inherit;border-radius:16px;gap:8px;padding:12px 12px 18px;transition:box-shadow .2s;display:grid}.ac-start:hover{box-shadow:inset 0 0 0 1px var(--ink)}.ac-start .ac-start-paint{aspect-ratio:21/8;margin-bottom:6px}.ac-start-tag,.ac-start-title,.ac-start-sum,.ac-start-list,.ac-go{margin-inline:6px}.ac-start-tag{color:var(--muted);font-size:12px;font-weight:500}.ac-start-title{letter-spacing:-.015em;font-size:22px;font-weight:600}.ac-start-sum{color:var(--muted);font-size:15px;line-height:1.5}.ac-start-list{border-top:1px solid var(--line);margin-top:4px;display:grid}.ac-start-row{border-bottom:1px solid var(--line);grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 0;font-size:14px;display:grid}.ac-n{background:var(--card);width:22px;height:22px;color:var(--muted);border-radius:999px;place-items:center;font-size:11px;font-weight:600;display:grid}.ac-m{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.ac-go{margin-top:4px;font-size:14px;font-weight:600}.ac-path{gap:44px;padding-top:40px;padding-bottom:96px;scroll-margin-top:72px;display:grid}.ac-path-title{border-top:1px solid var(--line);letter-spacing:-.03em;padding-top:32px;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:600}.ac-step{gap:18px;display:grid;position:relative}.ac-step:not(:last-child):before{content:"";background:var(--line);width:1px;position:absolute;top:34px;bottom:-44px;left:15px}.ac-step-head{align-items:flex-start;gap:14px;display:flex}.ac-step-n{z-index:1;background:var(--bg);width:31px;height:31px;box-shadow:inset 0 0 0 1px var(--ink);border-radius:999px;flex:none;place-items:center;font-size:14px;font-weight:600;display:grid;position:relative}.ac-step-head h3{letter-spacing:-.02em;flex-wrap:wrap;align-items:baseline;gap:4px 10px;font-size:clamp(1.3rem,2.4vw,1.6rem);font-weight:600;line-height:1.15;display:flex}.ac-step-level{letter-spacing:0;color:var(--muted);font-size:13px;font-weight:500}.ac-step-head p{color:var(--muted);margin-top:4px}.ac-grid{gap:14px;margin:0;padding:0 0 0 45px;list-style:none;display:grid}@media (min-width:720px){.ac-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1100px){.ac-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:560px){.ac-grid{padding-left:0}.ac-step:before{display:none}}.ac-grid>li{display:grid}.ac-card{box-shadow:inset 0 0 0 1px var(--line);color:inherit;border-radius:14px;flex-direction:column;gap:8px;padding:10px 10px 16px;transition:box-shadow .2s;display:flex}.ac-card:hover{box-shadow:inset 0 0 0 1px var(--ink)}.ac-card .pl-other-paint{aspect-ratio:2;margin-bottom:4px}.ac-card:hover .pl-other-paint{transform:scale(1.02)}.ac-card>:not(.pl-other-paint){margin-inline:6px}.ac-card-title{letter-spacing:-.01em;font-size:17px;font-weight:600}.ac-card-sum{color:var(--muted);font-size:14.5px;line-height:1.5}.ac-card-meta{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:auto;padding-top:6px;font-size:13px}.ac-card-progress{min-height:18px;color:var(--muted);font-variant-numeric:tabular-nums;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;font-size:12.5px;display:grid}.ac-card-progress[data-state=done]{color:var(--ink);font-weight:500}.ac-head{border-bottom:1px solid var(--line);padding-top:clamp(24px,4vw,40px);padding-bottom:clamp(32px,5vw,56px)}.ac-crumb ol{color:var(--muted);flex-wrap:wrap;gap:6px;margin:0 0 clamp(28px,5vw,48px);padding:0;font-size:14px;list-style:none;display:flex}.ac-crumb li+li:before{content:"/";color:var(--faint);margin-right:6px}.ac-crumb a{text-decoration:underline;-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line);text-underline-offset:4px;padding-block:6px;display:inline-block}.ac-crumb a:hover{color:var(--ink);-webkit-text-decoration-color:var(--ink);text-decoration-color:var(--ink)}.ac-crumb [aria-current]{color:var(--ink);padding-block:6px}.ac-head-grid{align-items:end;gap:32px;display:grid}@media (min-width:960px){.ac-head-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:64px}}.ac-head h1{text-wrap:balance;letter-spacing:-.045em;max-width:16ch;margin-top:14px;font-size:clamp(2.4rem,5.4vw,4.25rem);font-weight:600;line-height:1}.ac-head-sum{max-width:36rem;color:var(--muted);margin-top:18px;font-size:clamp(17px,1.6vw,19px);line-height:1.5}.ac-head-meta{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:14px;font-size:14px}.ac-head-side{gap:10px;display:grid}.ac-head-paint{aspect-ratio:21/8;margin-bottom:8px}.ac-outcomes-title{font-size:13px;font-weight:600}.ac-outcomes{border-top:1px solid var(--line);margin:0;padding:0;list-style:none;display:grid}.ac-outcomes li{border-bottom:1px solid var(--line);padding:8px 0 8px 20px;font-size:14.5px;line-height:1.45;position:relative}.ac-outcomes li:before{content:"";width:7px;height:7px;box-shadow:inset 0 0 0 1.5px var(--ink);border-radius:999px;position:absolute;top:1.05em;left:3px}.ac-course{gap:32px;padding-top:clamp(28px,4vw,48px);padding-bottom:40px;display:grid}@media (min-width:960px){.ac-course{grid-template-columns:260px minmax(0,1fr);gap:72px}.ac-side{align-self:start;max-height:calc(100svh - 104px);position:sticky;top:88px;overflow-y:auto}}.ac-toc-head{margin-bottom:8px;font-size:13px;font-weight:600}.ac-toc ol{border-top:1px solid var(--line);margin:0;padding:0;list-style:none;display:grid}.ac-toc li{border-bottom:1px solid var(--line)}.ac-toc a{min-height:44px;color:var(--muted);grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 4px;font-size:14px;line-height:1.35;display:grid}.ac-toc a:hover,.ac-toc li[data-active] a{color:var(--ink)}.ac-toc li[data-active] .ac-toc-t{font-weight:600}.ac-toc li[data-active] .ac-toc-n{box-shadow:inset 0 0 0 1px var(--ink);color:var(--ink)}.ac-toc-n{background:var(--card);font-variant-numeric:tabular-nums;border-radius:999px;place-items:center;width:22px;height:22px;font-size:11px;font-weight:600;display:grid}.ac-toc li[data-done] .ac-toc-n{background:var(--ink);color:var(--bg)}.ac-toc-m{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.ac-toc-foot{color:var(--muted);gap:8px;margin-top:14px;font-size:13px;display:grid}.ac-toc-foot .ac-linkbtn{min-height:24px;color:var(--muted)}.ac-toc-note{color:var(--muted);font-size:12px}.ac-lessons{min-width:0;display:grid}.ac-lesson{max-width:var(--ac-measure);border-bottom:1px solid var(--line);margin-bottom:clamp(48px,7vw,72px);padding-bottom:clamp(48px,7vw,72px);scroll-margin-top:88px}.ac-lesson-num{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px}.ac-lesson-title{letter-spacing:-.03em;text-wrap:balance;margin-top:8px;font-size:clamp(1.6rem,3vw,2.15rem);font-weight:600;line-height:1.12}.ac-anchor{vertical-align:middle;width:32px;height:32px;color:var(--muted);opacity:0;border-radius:6px;place-items:center;margin-left:4px;font-size:.7em;font-weight:500;transition:opacity .15s;display:inline-grid}.ac-lesson-title:hover .ac-anchor,.ac-anchor:focus-visible{opacity:1}.ac-anchor:hover{color:var(--ink)}@media (hover:none){.ac-anchor{opacity:1}}.ac-prose{margin-top:18px}.ac-prose p{text-wrap:pretty;font-size:17px;line-height:1.7}.ac-prose p+p{margin-top:1em}.ac-where{border-block:1px solid var(--line);flex-wrap:wrap;gap:4px 10px;margin-top:22px;padding:10px 0;font-size:14.5px;line-height:1.5;display:flex}.ac-where span{font-weight:600}.ac-tip{border-left:2px solid var(--ink);color:var(--muted);margin-top:20px;padding:2px 0 2px 16px;font-size:15.5px;line-height:1.6}.ac-tip strong{color:var(--ink);margin-right:6px}.ac-try{margin-top:32px}.ac-try h3,.ac-end h2{letter-spacing:-.01em;font-size:17px;font-weight:600}.ac-try-note{color:var(--muted);margin-top:4px;font-size:14px}.ac-try-list{gap:10px;margin-top:14px;display:grid}.ac-try-item{background:var(--card);border-radius:12px;margin:0;padding:14px 16px 12px}.ac-try-item figcaption{color:var(--muted);font-size:12px;font-weight:600}.ac-try-item p{overflow-wrap:anywhere;-webkit-user-select:text;user-select:text;margin-top:6px;font-size:15.5px;line-height:1.6}.ac-try-actions{flex-wrap:wrap;align-items:center;gap:4px 12px;margin-top:10px;display:flex}.ac-copy{background:var(--bg);min-height:36px;box-shadow:inset 0 0 0 1px var(--line);font:inherit;color:var(--ink);cursor:pointer;border:0;border-radius:8px;align-items:center;gap:6px;padding:0 12px;font-size:13.5px;font-weight:500;transition:box-shadow .16s;display:inline-flex}.ac-copy:hover{box-shadow:inset 0 0 0 1px var(--ink)}.ac-copy-status{color:var(--muted);font-size:13px}.ac-check{border:1px solid var(--line);border-radius:12px;min-width:0;margin:32px 0 0;padding:18px 18px 14px}.ac-check legend{float:left;width:100%;padding:0}.ac-check legend+*{clear:both}.ac-check-tag{color:var(--muted);font-size:12px;font-weight:600;display:block}.ac-check-q{margin-top:4px;font-size:16.5px;font-weight:600;line-height:1.4;display:block}.ac-check-options{gap:6px;margin-top:12px;display:grid}.ac-check-options label{min-height:44px;box-shadow:inset 0 0 0 1px var(--line);cursor:pointer;border-radius:8px;align-items:center;gap:12px;padding:8px 12px;font-size:15px;line-height:1.4;display:flex}.ac-check-options label:hover,.ac-check-options label[data-picked]{box-shadow:inset 0 0 0 1px var(--ink)}.ac-check-options label:has(input:focus-visible){outline:2px solid var(--ink);outline-offset:2px}.ac-check-options input{width:16px;height:16px;accent-color:var(--ink);flex:none;margin:0}.ac-check-result{min-height:1.5em;color:var(--muted);margin-top:12px;font-size:15px;line-height:1.55}.ac-check-result strong{color:var(--ink)}.ac-lesson-foot{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 24px;margin-top:32px;display:flex}.ac-done{min-height:44px;box-shadow:inset 0 0 0 1px var(--line);cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:0 16px 0 12px;font-size:15px;font-weight:500;transition:box-shadow .16s;display:inline-flex;position:relative}.ac-done:hover{box-shadow:inset 0 0 0 1px var(--ink)}.ac-done input{opacity:0;cursor:pointer;width:100%;height:100%;margin:0;position:absolute;inset:0}.ac-done input:disabled{cursor:default}.ac-done:has(input:focus-visible){outline:2px solid var(--ink);outline-offset:3px}.ac-done-box{width:18px;height:18px;box-shadow:inset 0 0 0 1.5px var(--muted);color:#0000;border-radius:5px;place-items:center;display:grid}.ac-done[data-done]{box-shadow:inset 0 0 0 1px var(--ink)}.ac-done[data-done] .ac-done-box{background:var(--ink);box-shadow:none;color:var(--bg)}.ac-pn{flex-wrap:wrap;flex:auto;justify-content:space-between;gap:8px 20px;font-size:14.5px;display:flex}.ac-pn a{min-height:44px;color:var(--muted);align-items:center;gap:6px;display:inline-flex}.ac-pn a:hover{color:var(--ink)}.ac-pn-next{margin-left:auto;font-weight:500;color:var(--ink)!important}.ac-end{max-width:var(--ac-measure);padding-bottom:48px}.ac-end h2{letter-spacing:-.035em;font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.05}.ac-end>p{color:var(--muted);margin-top:10px;font-size:17px;line-height:1.6}.ac-end .pl-ctas{margin-top:22px;animation:none}.ac-next-courses{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:10px;margin-top:40px;display:grid}.ac-nc{box-shadow:inset 0 0 0 1px var(--line);border-radius:12px;gap:4px;padding:14px 16px;transition:box-shadow .16s;display:grid}.ac-nc:hover{box-shadow:inset 0 0 0 1px var(--ink)}.ac-nc-next{text-align:right}.ac-nc-label{color:var(--muted);font-size:12px}.ac-nc strong{font-size:16px;font-weight:600}@media (prefers-reduced-motion:no-preference){html:has(.ac-course){scroll-behavior:smooth}}@media (prefers-reduced-motion:reduce){.ac *,.ac :before,.ac :after{transition:none!important;animation:none!important}}
