.exercise-page{--paper:#F7F5EF;--ink:#272B28;--green:#006C54;--deep:#173A33;--line:#CBD0C7;--muted:#535D56;--wrong:#8A3D2E;scroll-behavior:smooth;font-synthesis:none}
.exercise-page *{box-sizing:border-box}
.exercise-page body{margin:0;background:var(--paper);color:var(--ink);font-family:'Source Sans 3',Arial,sans-serif;-webkit-font-smoothing:antialiased}
.exercise-page a{color:inherit;text-decoration:none}
.exercise-page button,.exercise-page input,.exercise-page summary{font:inherit}
.exercise-page button,.exercise-page a,.exercise-page summary,.exercise-page label{touch-action:manipulation}
.exercise-page button{border-radius:0;cursor:pointer}
.exercise-page a:focus-visible,.exercise-page button:focus-visible,.exercise-page summary:focus-visible{outline:2px solid var(--green);outline-offset:5px}
.exercise-page svg{display:block}
.exercise-page a svg,.exercise-page button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.4;flex-shrink:0}
.exercise-page .shell{width:calc(100% - 112px);max-width:1120px;margin-inline:auto}
.exercise-page .header{height:78px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}
.exercise-page .wordmark{font-family:Newsreader,Georgia,serif;font-size:32px;font-weight:500;letter-spacing:-.02em}
.exercise-page .header nav{display:flex;align-items:center;gap:30px;font-size:15px}
.exercise-page .nav-cta{display:flex;align-items:center;gap:13px;color:var(--green)}
.exercise-page .nav-current{border-bottom:1px solid currentColor;padding:12px 0}
.exercise-page .skip{position:absolute;left:16px;top:-100px;background:var(--paper);z-index:20;padding:12px}
.exercise-page .skip:focus{top:16px}
.exercise-page .hero{max-width:800px;padding:72px 0 46px}
.exercise-page .eyebrow{color:var(--green);font-size:12px;font-weight:600;letter-spacing:.13em;margin:0 0 24px}
.exercise-page h1,.exercise-page h2,.exercise-page h3,.exercise-page p{margin-top:0}
.exercise-page h1,.exercise-page h2,.exercise-page h3{font-weight:400}
.exercise-page h1,.exercise-page h2{font-family:Newsreader,Georgia,serif}
.exercise-page h1{font-size:clamp(38px,4.7vw,60px);line-height:1.05;letter-spacing:-.025em;margin-bottom:24px}
.exercise-page .lead{font-size:19px;line-height:1.55;max-width:680px;margin-bottom:22px}
.exercise-page .hero-meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:14px}
.exercise-page .hero-meta span+span{position:relative}
.exercise-page .hero-meta span+span:before{content:'·';position:absolute;left:-13px}
.exercise-page .anchor-bar{position:sticky;top:0;z-index:5;background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.exercise-page .anchor-content{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:64px}
.exercise-page .anchor-content nav{display:flex;gap:30px}
.exercise-page .anchor-content a{font-size:15px;display:flex;align-items:center;min-height:50px;gap:10px}
.exercise-page .anchor-content a small{font-size:12px;color:var(--muted)}
.exercise-page .progress{font-size:13px;color:var(--muted);white-space:nowrap}
.exercise-page .content{max-width:840px;margin:0 auto}
.exercise-page .category{scroll-margin-top:90px;padding-top:64px}
.exercise-page .category-heading{display:flex;gap:20px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:25px}
.exercise-page .category-number{font-size:13px;color:var(--green);padding-top:7px}
.exercise-page .category-heading h2{font-size:34px;line-height:1.1;letter-spacing:-.015em;margin-bottom:9px}
.exercise-page .category-heading p{font-size:15px;color:var(--muted);line-height:1.5;margin:0}
.exercise-page .task-count{margin-left:auto;font-size:13px;color:var(--muted);padding-top:8px;white-space:nowrap}
.exercise-page .task{padding:36px 0 44px;scroll-margin-top:86px}
.exercise-page .task+.task{border-top:1px solid var(--line)}
.exercise-page .task-meta{font-size:12px;display:flex;gap:15px;flex-wrap:wrap;margin-bottom:15px;color:var(--muted)}
.exercise-page .task-meta span:first-child{color:var(--green);font-weight:600;letter-spacing:.07em}
.exercise-page .task h3{font-size:25px;line-height:1.25;letter-spacing:-.01em;margin-bottom:17px;font-weight:600}
.exercise-page .prompt,.exercise-page .question-end,.exercise-page .conditions{font-size:18px;line-height:1.6;max-width:760px}
.exercise-page .prompt{margin-bottom:24px}
.exercise-page .conditions{padding-left:22px;margin-top:-8px;margin-bottom:22px}
.exercise-page .conditions li{padding-left:3px;margin-bottom:5px}
.exercise-page .answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;border:0;padding:0;margin:0}
.exercise-page .answer{min-height:68px;border:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:15px 18px;position:relative;cursor:pointer;background:transparent}
.exercise-page .answer:hover{border-color:#7A8E7D;background:#F0F2EB}
.exercise-page .answer:has(input:checked){border:2px solid var(--green);padding:14px 17px;background:#EDF1E9}
.exercise-page .answer:has(input:focus-visible){outline:2px solid var(--green);outline-offset:4px}
.exercise-page .answer input{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden;white-space:nowrap}
.exercise-page .answer-letter{font-size:13px;font-weight:600;color:var(--muted);flex-shrink:0}
.exercise-page .answer-content{font-size:17px;line-height:1.4;flex:1}
.exercise-page .selection{border:1px solid #8A988A;width:14px;height:14px;border-radius:50%;flex-shrink:0}
.exercise-page .answer:has(input:checked) .selection{background:var(--green);box-shadow:inset 0 0 0 3px var(--paper)}
.exercise-page .task-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:20px 0}
.exercise-page .check{display:flex;align-items:center;gap:20px;border:1px solid var(--green);color:var(--green);padding:12px 18px;min-height:47px;background:transparent;font-weight:600;font-size:15px}
.exercise-page .check:hover{background:#EAF0E8}
.exercise-page .feedback{font-size:15px;line-height:1.4;margin:0;flex:1;min-width:140px}
.exercise-page .feedback[data-status=correct]{color:var(--green)}
.exercise-page .feedback[data-status=incorrect]{color:var(--wrong)}
.exercise-page .solution{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.exercise-page .solution summary{display:flex;align-items:center;justify-content:space-between;padding:17px 0;cursor:pointer;font-size:15px;list-style:none;gap:20px}
.exercise-page .solution summary::-webkit-details-marker{display:none}
.exercise-page .plus{font-size:25px;font-weight:400;line-height:1}
.exercise-page .solution[open] .plus{transform:rotate(45deg)}
.exercise-page .solution-content{padding:8px 0 25px;max-width:720px;font-size:17px;line-height:1.65}
.exercise-page .solution-content p{margin-bottom:14px}
.exercise-page .solution-label{font-size:12px;font-weight:600;color:var(--green);letter-spacing:.08em}
.exercise-page .thinking-note{padding:15px 0 0 18px;border-left:2px solid var(--line);color:var(--muted);font-size:15px}
.exercise-page .thinking-note span{display:block;font-weight:600;color:var(--ink);margin-bottom:4px}
.exercise-page .order{display:flex;gap:8px;margin:18px 0}
.exercise-page .order span{border:1px solid var(--line);padding:8px;flex:1;text-align:center;font-size:15px}
.exercise-page .order .order-focus{border-color:var(--green);color:var(--green);font-weight:600}
.exercise-page .matrix{width:100%;max-width:320px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px auto}
.exercise-page .dot-field{width:100%;height:auto;max-width:90px;margin:auto}
.exercise-page .graphic-text{font-size:13px;color:var(--muted);margin:0 0 24px}
.exercise-page .graphic-text summary{cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.exercise-page .graphic-text p,.exercise-page .graphic-text ul{line-height:1.5}
.exercise-page .answers--figures{grid-template-columns:repeat(4,minmax(0,1fr))}
.exercise-page .answers--figures .answer{flex-direction:column;gap:10px;padding:14px}
.exercise-page .answers--figures .answer:has(input:checked){padding:13px}
.exercise-page .answers--figures .answer-letter{align-self:flex-start}
.exercise-page .answers--figures .answer-content{width:100%}
.exercise-page .answers--figures .selection{position:absolute;top:16px;right:14px}
.exercise-page .reset-area{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14px;color:var(--muted);padding:14px 0 50px}
.exercise-page .text-button{border:0;background:transparent;color:var(--green);padding:10px 0;text-decoration:underline;text-underline-offset:4px;min-height:44px}
.exercise-page .closing{border-top:1px solid var(--line);padding:47px 0 55px;display:flex;align-items:center;justify-content:space-between;gap:45px}
.exercise-page .closing h2{font-size:36px;line-height:1.12;margin-bottom:14px;letter-spacing:-.02em}
.exercise-page .closing p{font-size:17px;line-height:1.6;max-width:550px;color:var(--muted);margin:0}
.exercise-page .primary-link{background:var(--deep);color:white;padding:17px 24px;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:28px;white-space:nowrap;font-weight:600}
.exercise-page .primary-link:hover{background:#224D42}
.exercise-page .context-note{max-width:840px;margin:0 auto 52px;font-size:14px;color:var(--muted);line-height:1.6}
.exercise-page .context-note h2{font-family:inherit;font-size:16px;font-weight:600;margin-bottom:8px}
.exercise-page .context-note p{margin-bottom:8px}
.exercise-page .context-note a{text-decoration:underline;text-underline-offset:3px}
.exercise-page .footer{border-top:1px solid var(--line);padding:28px 0 36px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.exercise-page .footer small{font-size:13px;color:var(--muted)}
.exercise-page .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}
.exercise-page .no-js{padding:12px;border:1px solid var(--line)}
@media(max-width:850px){.exercise-page .shell{width:calc(100% - 64px)}
.exercise-page .hero{padding-top:56px}
.exercise-page .header nav{gap:20px}
.exercise-page .content{max-width:100%}
.exercise-page .closing{align-items:flex-start;flex-direction:column;gap:26px}}
@media(max-width:600px){.exercise-page .shell{width:calc(100% - 40px)}
.exercise-page .header{height:70px;gap:16px}
.exercise-page .wordmark{font-size:28px}
.exercise-page .header nav{gap:18px;font-size:14px}
.exercise-page .header .nav-info{display:none}
.exercise-page .nav-cta{gap:8px}
.exercise-page .nav-cta svg{width:17px}
.exercise-page .hero{padding:44px 0 32px}
.exercise-page h1{font-size:42px;line-height:1.08}
.exercise-page .eyebrow{margin-bottom:19px;font-size:11px}
.exercise-page .lead{font-size:17px;line-height:1.55}
.exercise-page .hero-meta{font-size:13px;gap:20px}
.exercise-page .anchor-content{min-height:80px;align-items:flex-start;gap:0;flex-direction:column;padding:10px 0 9px}
.exercise-page .anchor-content nav{gap:25px;width:100%;justify-content:space-between}
.exercise-page .anchor-content a{font-size:14px;min-height:36px;gap:6px}
.exercise-page .anchor-content a small{font-size:10px}
.exercise-page .progress{font-size:12px;align-self:flex-end;line-height:1.4}
.exercise-page .category{padding-top:42px;scroll-margin-top:108px}
.exercise-page .category-heading{gap:12px;padding-bottom:21px}
.exercise-page .category-heading h2{font-size:29px}
.exercise-page .category-heading p{font-size:14px}
.exercise-page .task-count{display:none}
.exercise-page .category-number{padding-top:6px;font-size:12px}
.exercise-page .task{padding:28px 0 34px;scroll-margin-top:105px}
.exercise-page .task-meta{gap:6px 12px;font-size:11px;margin-bottom:14px}
.exercise-page .task h3{font-size:23px;line-height:1.25}
.exercise-page .prompt,.exercise-page .conditions,.exercise-page .question-end{font-size:17px;line-height:1.55}
.exercise-page .answers{grid-template-columns:1fr;gap:10px}
.exercise-page .answer{padding:14px 15px;min-height:61px;gap:13px}
.exercise-page .answer:has(input:checked){padding:13px 14px}
.exercise-page .answer-content{font-size:16px}
.exercise-page .task-actions{padding:18px 0;gap:14px}
.exercise-page .feedback{font-size:14px;min-width:100%;flex-basis:100%}
.exercise-page .feedback:empty{display:none}
.exercise-page .solution summary{font-size:14px;padding:16px 0}
.exercise-page .solution-content{font-size:16px;line-height:1.6}
.exercise-page .thinking-note{font-size:14px}
.exercise-page .answers--figures{grid-template-columns:repeat(2,minmax(0,1fr))}
.exercise-page .matrix{max-width:290px;gap:10px}
.exercise-page .reset-area{align-items:flex-start;flex-direction:column;gap:4px;padding-bottom:32px}
.exercise-page .closing{padding:34px 0 36px;gap:23px}
.exercise-page .closing h2{font-size:32px}
.exercise-page .closing p{font-size:16px}
.exercise-page .primary-link{width:100%;font-size:16px;padding:16px 20px}
.exercise-page .context-note{font-size:13px;margin-bottom:35px}
.exercise-page .footer{align-items:flex-start;flex-direction:column;gap:14px;padding:24px 0 30px}
.exercise-page .footer .wordmark{font-size:26px}
.exercise-page .order{gap:5px}
.exercise-page .order span{font-size:13px;padding:8px 3px}}
@media(max-width:350px){.exercise-page h1{font-size:36px}
.exercise-page .header nav{gap:12px}
.exercise-page .anchor-content nav{gap:13px}
.exercise-page .anchor-content a{font-size:13px}
.exercise-page .hero-meta{gap:15px;font-size:12px}
.exercise-page .hero-meta span+span:before{left:-10px}}
@media(prefers-reduced-motion:reduce){.exercise-page{scroll-behavior:auto}}
.exercise-page .answers{min-width:0}
.exercise-page .closing p.eyebrow{font-size:12px;color:var(--green);margin-bottom:20px}
.exercise-page .task h3{font-size:28px;margin-bottom:5px}
.exercise-page .task-subtitle{font-size:14px;color:var(--muted);line-height:1.5;margin-bottom:23px}
.exercise-page .prompt:empty{display:none}
.exercise-page .conditions{margin-top:0}
.exercise-page .hero{padding-bottom:8px}
.exercise-page .category{scroll-margin-top:24px}
.exercise-page .task{scroll-margin-top:24px}
.exercise-page .category-heading{padding-bottom:20px}
.exercise-page .category-heading h2{margin-bottom:0}
.exercise-page .domino-sequence{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:28px 0 22px}
.exercise-page .domino{display:block;width:100%;max-width:132px;height:auto;margin:auto}
.exercise-page .answers--figures .answer-content{padding:8px 0}
@media(max-width:600px){.exercise-page .domino-sequence{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px 10px}
.exercise-page .hero{padding-bottom:0}
.exercise-page .category{scroll-margin-top:24px}}
@media(max-width:350px){.exercise-page .header .nav-current{display:none}}
@media(max-width:760px){.exercise-page .header{height:auto;min-height:104px;flex-wrap:wrap;gap:8px;padding:16px 0 10px}
.exercise-page .header .wordmark{flex-basis:100%}
.exercise-page .header nav{width:100%;justify-content:space-between;gap:10px;font-size:14px}
.exercise-page .header nav a{display:inline-flex;align-items:center;min-height:44px;white-space:nowrap}
.exercise-page .header .nav-current{display:inline-flex;padding:10px 0}
.exercise-page .header .nav-cta{gap:7px}}
/* Outer grid, heading scale and shared shell match the Testformat article. */
body[data-view="info"] .exercise-page .content{max-width:none;margin:0}
body[data-view="info"] .exercise-page .category{padding-top:48px}
body[data-view="info"] .exercise-page .category-heading h2{font-size:40px;line-height:1.15;letter-spacing:-.025em}
body[data-view="info"] .exercise-page .task h3{font-size:27px;line-height:1.2;font-weight:400}
.exercise-page .answers,.exercise-page .solution,.exercise-page .task-actions,.exercise-page .domino-sequence{max-width:760px}
.exercise-page .task-subtitle{margin-bottom:24px}
.exercise-page .domino-sequence{margin-left:0;margin-right:0}
.exercise-page .exercise-closing{display:flex;align-items:center;justify-content:space-between;gap:40px;border-top:1px solid var(--line);padding:48px 0 56px}
.exercise-page .exercise-closing h2{font-size:40px;line-height:1.15;letter-spacing:-.025em;margin-bottom:24px}
.exercise-page .exercise-closing p:not(.eyebrow){max-width:760px;font-size:18px;line-height:1.65;color:var(--muted);margin:0}
@media(max-width:760px){
 body[data-view="info"] .exercise-page .category-heading h2{font-size:32px}
 .exercise-page .exercise-closing{flex-direction:column;align-items:stretch;gap:24px}
 .exercise-page .exercise-closing h2{font-size:32px}
}