:root{--teal:#0F6E6B;--amber:#E29A2D;--sand:#DFC98F;--ink:#333F4A;--paper:#F6F5F1;--line:#d5deda;--muted:#53616a}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,sans-serif;line-height:1.6}header,footer{padding:22px max(24px,calc((100vw - 1160px)/2));background:#fff}header{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}a{color:var(--teal);text-underline-offset:4px}.brand{font-size:22px;font-weight:700;text-decoration:none}.brand span{font-size:14px;font-weight:400;color:var(--ink)}main{max-width:1208px;padding:40px 24px 60px;margin:auto}h1{font-size:clamp(30px,4.4vw,54px);line-height:1.12;letter-spacing:-1.2px;margin:12px 0 22px;color:var(--teal);max-width:880px}h2{line-height:1.4;font-size:23px;margin:0 0 16px}p{margin:0 0 18px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.3px;text-transform:uppercase;color:var(--teal);margin-bottom:10px}.lede{font-size:21px;max-width:720px}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;margin:22px 0}.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:30px 0}.facts div{padding:18px 0;border-top:3px solid var(--sand)}.facts strong,.facts span{display:block}.facts strong{font-size:20px}.facts span,.small{font-size:14px;color:var(--muted)}button{font:inherit;font-weight:600;border-radius:7px;background:var(--teal);border:1px solid var(--teal);color:#fff;padding:11px 18px;cursor:pointer}button:hover{filter:brightness(.93)}button:disabled{opacity:.45;cursor:default}.secondary{background:#fff;color:var(--teal)}.text-button{background:none;border:0;padding:4px 0;color:var(--teal);text-decoration:underline}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--amber);outline-offset:4px}input{accent-color:var(--teal)}.test-heading{display:flex;justify-content:space-between;align-items:center;gap:24px}.test-heading h1{font-size:36px;margin-bottom:14px}progress{width:100%;height:10px;accent-color:var(--teal)}.test-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:24px}fieldset{border:0;padding:0;margin:24px 0}fieldset label{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:8px;margin:12px 0;padding:16px;cursor:pointer}fieldset label:has(input:checked){border:2px solid var(--teal);padding:15px;background:#edf6f4}fieldset input{margin-top:7px;flex-shrink:0}fieldset .letter{font-weight:700}.question-tools{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.question-tools label{cursor:pointer}#navigator{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:16px 0}#navigator button{padding:8px 0;min-height:44px;background:white;color:var(--ink);border-color:var(--line);position:relative}#navigator button.answered{background:var(--teal);color:white}#navigator button.current{outline:3px solid var(--amber);outline-offset:1px}#navigator .flagged::after{content:'!';position:absolute;right:2px;top:-10px;background:var(--sand);color:var(--ink);font-size:12px;border-radius:50%;width:15px}.full{width:100%}.score{font-size:48px;font-weight:700;color:var(--teal)}.topic-row{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:10px 0}.review-item{border-left:5px solid var(--amber)}.review-item.correct{border-left-color:var(--teal)}.review-item h3{font-size:19px;line-height:1.5;margin:12px 0}.review-choice{margin:6px 0;padding:8px 12px;background:var(--paper);border-radius:5px}.review-choice.right{background:#edf6f4}.review-item .explanation{margin:18px 0 0}.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}[hidden]{display:none!important}dialog{max-width:540px;width:calc(100% - 40px);border:0;border-radius:12px;padding:30px;color:var(--ink)}dialog::backdrop{background:rgba(51,63,74,.55)}footer{font-size:13px;border-top:1px solid var(--line)}@media(max-width:760px){main{padding:26px 18px}.facts{grid-template-columns:1fr;gap:8px}.facts div{padding:10px 0}.test-layout{grid-template-columns:1fr;gap:0}.panel{padding:20px}header{padding:18px;font-size:13px}.brand span{display:none}.test-heading{display:block}h2{font-size:20px}#navigator{grid-template-columns:repeat(8,1fr)}.question-tools{font-size:14px}}@media print{header,footer,.actions,#welcome,#test,#storage-status{display:none!important}body{background:white}main{padding:0}h1{font-size:28px}.panel{break-inside:avoid;box-shadow:none}.review-item{margin:12px 0;padding:16px}.score{font-size:32px}}