#selective-attention-course{--paper:oklch(98% .009 88);--ink:oklch(26% .024 65);--muted:oklch(46% .022 65);--line:oklch(84% .018 80);--honey:oklch(84% .12 84);--honey-light:oklch(95% .052 86);--green:oklch(35% .047 162);--green-light:oklch(94% .03 153);--blue:oklch(49% .17 263);--white:oklch(99.5% .004 85);--serif:'Spectral',Georgia,serif;--sans:'Hanken Grotesk',system-ui,sans-serif;color:var(--ink);background:var(--paper);font:16px/1.6 var(--sans);padding:32px 24px 48px}
#selective-attention-course,#selective-attention-course *{box-sizing:border-box}
#selective-attention-course [hidden]{display:none!important}
#selective-attention-course .sa-main{max-width:1168px;margin:auto}
#selective-attention-course .sa-explainer,#selective-attention-course .sa-faq{max-width:74ch;margin:0 auto 42px}
#selective-attention-course h2{font:400 34px/1.2 var(--serif);letter-spacing:-.6px;text-wrap:balance;margin:0 0 20px}
#selective-attention-course h3{font:500 24px/1.3 var(--serif);margin:28px 0 12px}
#selective-attention-course p,#selective-attention-course li{font-size:var(--body-size,18px);line-height:var(--body-lh,1.65);color:var(--body-ink,var(--ink))}
#selective-attention-course p{margin:0 0 18px}
#selective-attention-course a{color:var(--green);text-underline-offset:3px}
#selective-attention-course button,#selective-attention-course input,#selective-attention-course textarea{font:inherit;color:inherit;min-height:44px;touch-action:manipulation}
#selective-attention-course button{cursor:pointer}
#selective-attention-course button:disabled{cursor:default;opacity:.65}
#selective-attention-course :is(button,input,textarea,summary,a):focus-visible{outline:3px solid var(--blue);outline-offset:4px}
#selective-attention-course .sa-examples{padding:22px 26px;background:var(--honey-light);border-radius:12px;margin:26px 0}
#selective-attention-course .sa-examples h3{margin-top:0}
#selective-attention-course .sa-examples ul,#selective-attention-course .sa-steps{padding-left:24px;margin:0}
#selective-attention-course .sa-examples li+li,#selective-attention-course .sa-steps li+li{margin-top:12px}
#selective-attention-course .sa-passport{border-top:1px solid var(--line);padding:12px 0}
#selective-attention-course .sa-passport summary{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:48px;cursor:pointer}
#selective-attention-course .sa-passport summary>span:last-child{text-decoration:underline;text-underline-offset:4px}
#selective-attention-course #sa-stamps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;padding:0;list-style:none}
#selective-attention-course #sa-stamps li{padding:14px 8px;border:1px dashed var(--line);border-radius:8px;text-align:center;font-size:13px}
#selective-attention-course #sa-stamps span,#selective-attention-course #sa-stamps strong{display:block}
#selective-attention-course #sa-stamps li>span:first-child{font-size:26px}
#selective-attention-course #sa-stamps .sa-earned{background:var(--honey);border:1px solid var(--honey)}
#selective-attention-course .sa-small{font-size:14px;color:var(--muted);line-height:1.55}
#selective-attention-course #sa-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:12px 0 24px}
#selective-attention-course #sa-nav button{display:flex;align-items:center;gap:9px;border:0;border-bottom:2px solid var(--line);background:transparent;padding:12px 5px;text-align:left;font-size:14px;line-height:1.35;overflow-wrap:anywhere}
#selective-attention-course #sa-nav button>span{display:grid;place-items:center;flex-shrink:0;width:27px;height:27px;border:1px solid var(--line);border-radius:50%}
#selective-attention-course #sa-nav [aria-current]{border-color:var(--green);color:var(--green);font-weight:700}
#selective-attention-course #sa-nav [aria-current]>span{background:var(--green);color:var(--paper)}
#selective-attention-course #sa-nav button:hover:not(:disabled){background:var(--honey-light)}
#selective-attention-course #lesson{scroll-margin-top:100px}
#selective-attention-course #lesson:focus{outline:none}
#selective-attention-course .sa-lesson-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--white)}
#selective-attention-course .sa-art{margin:0;background:var(--honey-light);min-width:0}
#selective-attention-course .sa-art img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
#selective-attention-course .sa-art figcaption{font:400 25px/1.35 var(--serif);padding:26px 28px;max-width:28ch;color:var(--ink)}
#selective-attention-course .sa-panel{padding:34px;min-width:0}
#selective-attention-course .sa-wide{grid-column:1/-1;max-width:850px;width:100%;margin:auto}
#selective-attention-course fieldset{border:0;padding:0;min-width:0;margin:20px 0}
#selective-attention-course legend{font-weight:700;margin-bottom:12px;font-size:17px;line-height:1.5;padding:0}
#selective-attention-course legend span{font-weight:400;font-size:14px}
#selective-attention-course .sa-check{padding-top:24px;border-top:1px solid var(--line);margin:28px 0 0}
#selective-attention-course .sa-choices,#selective-attention-course .sa-prediction{display:grid;gap:10px}
#selective-attention-course .sa-choice{width:100%;border:1px solid var(--line);border-radius:8px;padding:13px 15px;min-height:49px;text-align:left;background:var(--white);line-height:1.5;transition:background .18s ease-out}
#selective-attention-course .sa-choice:hover:not(:disabled),#selective-attention-course .sa-choice[aria-pressed=true],#selective-attention-course .sa-correct{border-color:var(--green);background:var(--green-light)}
#selective-attention-course .sa-choice:disabled{opacity:1}
#selective-attention-course .sa-btn{display:inline-flex;justify-content:center;align-items:center;border:1px solid var(--honey);border-radius:8px;background:var(--honey);color:var(--ink);min-height:49px;padding:12px 18px;font-weight:700;line-height:1.4;margin:6px 0;box-shadow:0 3px 0 oklch(68% .12 80)}
#selective-attention-course .sa-btn:hover{background:oklch(80% .13 84)}
#selective-attention-course .sa-btn:active{transform:translateY(1px)}
#selective-attention-course .sa-panel>.sa-btn{display:flex;width:100%;margin:16px 0}
#selective-attention-course .sa-secondary{background:transparent;border-color:var(--line);box-shadow:none;font-weight:500}
#selective-attention-course .sa-secondary:hover{background:var(--honey-light)}
#selective-attention-course .sa-feedback:empty{display:none}
#selective-attention-course .sa-feedback{background:var(--green-light);border-radius:8px;padding:16px;margin:14px 0 0;font-size:var(--body-size,18px);line-height:var(--body-lh,1.65)}
#selective-attention-course .sa-retry{background:var(--honey-light)}
#selective-attention-course .sa-feedback:focus{outline:2px solid var(--green);outline-offset:3px}
#selective-attention-course .sa-listening{padding:18px 20px;background:var(--paper);border:1px solid var(--line);border-radius:8px}
#selective-attention-course .sa-listening p:last-child{margin-bottom:0}
#selective-attention-course .sa-stage{display:block;width:100%;height:auto;max-height:500px;margin:20px 0}
#selective-attention-course .sa-radio{display:flex;align-items:center;gap:12px;min-height:48px;cursor:pointer}
#selective-attention-course input[type=radio]{width:22px;height:22px;accent-color:var(--green);margin:0}
#selective-attention-course input[type=number],#selective-attention-course textarea{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:12px;font-size:16px;display:block;max-width:100%;margin:10px 0 20px}
#selective-attention-course input[type=number]{width:130px}
#selective-attention-course textarea{width:100%;resize:vertical;min-height:120px}
#selective-attention-course .sa-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
#selective-attention-course .sa-navigation{justify-content:space-between;margin:18px 0}
#selective-attention-course .sa-progress-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:24px 0 8px;font-size:14px}
#selective-attention-course progress{accent-color:var(--green);height:9px;width:180px;max-width:100%}
#selective-attention-course #sa-save{margin-right:auto}
#selective-attention-course #sa-reset-box,#selective-attention-course .sa-completion{padding:22px;background:var(--honey-light);border:1px solid var(--line);border-radius:10px;margin:20px 0}
#selective-attention-course .sa-completion h3{margin-top:0}
#selective-attention-course .sa-faq{margin-top:52px;margin-bottom:0}
#selective-attention-course .sa-faq details{border-bottom:1px solid var(--line);padding:10px 0}
#selective-attention-course .sa-faq summary{padding:12px 0;min-height:48px;cursor:pointer;font-weight:700}
#selective-attention-course .sa-faq details p{padding-top:10px}
#selective-attention-course .sa-visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(max-width:760px){#selective-attention-course{padding:28px 16px 36px}#selective-attention-course .sa-lesson-grid{grid-template-columns:1fr}#selective-attention-course .sa-art img{max-height:340px;object-position:center}#selective-attention-course .sa-art figcaption{font-size:23px;max-width:none;padding:20px 24px}#selective-attention-course .sa-panel{padding:26px 22px}#selective-attention-course h2{font-size:29px}#selective-attention-course #sa-nav{gap:4px}#selective-attention-course #sa-nav button{flex-direction:column;text-align:center;font-size:12px;padding:10px 2px}#selective-attention-course #sa-stamps{grid-template-columns:repeat(3,minmax(0,1fr))}#selective-attention-course .sa-passport summary{font-size:14px;gap:10px}#selective-attention-course .sa-examples{padding:20px}#selective-attention-course .sa-progress-row{align-items:flex-start}}
@media(max-width:360px){#selective-attention-course .sa-panel{padding:24px 16px}#selective-attention-course .sa-passport summary{align-items:flex-start;flex-direction:column;gap:4px}#selective-attention-course #sa-nav button{font-size:11px}#selective-attention-course #sa-stamps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){#selective-attention-course *,#selective-attention-course *::before,#selective-attention-course *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}