:root{--paper:#f6f5f0;--ink:#172b2c;--muted:#526466;--accent:#08685d;--line:#d5ddda;--yellow:#f5d15d}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.75 Arial,sans-serif}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;padding:10px 16px}button:hover{border-color:var(--accent);background:#eef5f1}button:disabled{opacity:.55;cursor:default}a{color:var(--accent)}:focus-visible{outline:3px solid #bb7200;outline-offset:4px}header{position:sticky;top:0;z-index:4;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 32px;background:var(--paper);border-bottom:1px solid var(--line)}#brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--ink);text-decoration:none;direction:ltr;line-height:1.2}#brand span{display:block;font-size:16px;letter-spacing:0;margin-top:5px;font-weight:400}nav{display:flex;gap:8px}nav button{border:0;background:transparent}.local{color:var(--muted);font-size:16px}.layout{display:grid;grid-template-columns:250px 1fr;max-width:1600px;margin:auto}aside{padding:28px 22px;border-left:1px solid var(--line)}aside button{width:100%;text-align:right;margin:3px 0;background:transparent;border:0;line-height:1.4}aside button.active{background:var(--ink);color:#fff}aside small{display:block;font-size:16px;color:var(--muted)}.group{margin:18px 0 8px;font-weight:bold;color:var(--accent)}main{padding:38px clamp(22px,4vw,68px);min-width:0;min-height:75vh}h1{font-size:clamp(30px,3.2vw,48px);line-height:1.2;margin:10px 0 18px;letter-spacing:-1px}h2{font-size:26px;line-height:1.4;margin:10px 0 16px}h3{font-size:20px}.eyebrow{font-size:16px;color:var(--accent);font-weight:bold;letter-spacing:.6px;margin:0}.muted{color:var(--muted)}.lead{font-size:20px;max-width:780px}.hero{padding-bottom:24px;border-bottom:1px solid var(--line)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.primary{background:var(--accent);color:white;border-color:var(--accent)}.primary:hover{background:#064f47;color:white}.dark{background:var(--ink);color:#fff}.dark:hover{background:#284847;color:#fff}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:28px 0}.metric{border:1px solid var(--line);padding:20px;background:#fff;border-radius:12px}.metric strong{font-size:36px;display:block;line-height:1.2}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);padding:24px;border-radius:12px}.card p{margin:8px 0}.card button{margin-top:16px}.tag{font-size:16px;color:var(--accent)}.bar{height:7px;background:#e6ebe8;border-radius:4px;overflow:hidden;margin:12px 0}.bar span{display:block;height:100%;background:var(--accent)}.question{max-width:1000px}.question-head{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:18px}.question-body{background:white;border:1px solid var(--line);padding:32px;border-radius:14px}.answers{display:grid;gap:12px;margin:28px 0}.answer{display:flex;align-items:flex-start;gap:14px;border:1px solid var(--line);padding:16px;border-radius:8px;cursor:pointer}.answer:has(input:checked){border:2px solid var(--accent);background:#eef5f1;padding:15px}.answer input{margin-top:8px;width:18px;height:18px;accent-color:var(--accent)}textarea{width:100%;min-height:170px;resize:vertical;padding:16px;border:1px solid #94a8a2;border-radius:8px;background:#fcfcfa;margin-top:10px;line-height:1.7;color:var(--ink)}pre{direction:ltr;text-align:left;overflow:auto;background:#162c2e;color:#edf8f1;padding:20px;border-radius:9px;font:16px/1.7 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere}.feedback{border-right:5px solid var(--accent);background:#edf5ef;padding:22px;margin-top:24px;border-radius:6px}.feedback.wrong{background:#fff4e5;border-color:#a75b0c}.feedback h3{margin-top:0}.error{color:#9a2b17}.rating{display:flex;flex-wrap:wrap;gap:10px}.review-note{background:#fcf4d9;padding:16px;border-radius:8px}.empty{padding:40px;text-align:center;border:1px dashed var(--line)}.row{display:flex;gap:14px;justify-content:space-between;align-items:center}.row button{flex-shrink:0}.summary-list{display:grid;gap:15px}.summary-list .card{border-right:5px solid var(--accent)}footer{border-top:1px solid var(--line);padding:20px 32px;display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:16px}footer button{background:transparent;border:0;padding:4px 8px}dialog{max-width:800px;width:90%;max-height:85vh;overflow:auto;border:1px solid var(--line);border-radius:14px;padding:32px;background:var(--paper);color:var(--ink);font-size:17px}dialog::backdrop{background:#10252499}#close-dialog{float:left}.skip{position:absolute;top:-100px;z-index:9;background:white;padding:10px}.skip:focus{top:5px}small{font-size:16px}ul{padding-right:24px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#597b70;border-radius:8px}*{scrollbar-color:#597b70 #e4e9e5;scrollbar-width:thin}.fade{animation:in .18s ease-out}@keyframes in{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}@media(max-width:1000px){header{flex-wrap:wrap;padding:16px}.local{display:none}.layout{grid-template-columns:205px 1fr}main{padding:25px}.grid{grid-template-columns:1fr}}@media(max-width:700px){.layout{display:block}aside{border:0;padding:16px}#topics{display:none}aside::after{content:'לתרגול מלא עדיף מחשב. אפשר להתחיל גם מהכפתורים למטה.'}.metrics{grid-template-columns:1fr}.question-body{padding:20px}.question-head,.row,footer{flex-wrap:wrap}h1{font-size:32px}nav{flex-wrap:wrap}}
.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}
aside button.active small{color:#d4e8df}main:focus{outline:none}.feedback h2{font-size:24px}
@media(min-width:1001px){aside{position:sticky;top:96px;align-self:start;height:calc(100vh - 96px);overflow:auto}.layout{align-items:start}main{min-height:calc(100vh - 165px)}}
.feedback{scroll-margin-top:120px}ul{list-style-type:square}
.question-help{border-top:1px solid var(--line);margin-top:24px;padding-top:8px}.help-actions{display:flex;gap:12px;flex-wrap:wrap}.help-actions button[aria-expanded=true]{background:var(--ink);color:#fff}.help-panel{margin-top:16px;padding:20px;background:#f5f7f2;border:1px solid var(--line);border-radius:8px}.help-panel h2{font-size:23px;margin-top:0}.help-panel[hidden]{display:none}
.lesson-section{padding:18px 0;border-bottom:1px solid var(--line)}.lesson-section:last-child{border:0}.lesson-section p{max-width:78ch}.option-reasons{display:grid;gap:14px}.option-reasons p{margin:4px 0}.help-panel{scroll-margin-top:110px}.feedback button{margin-left:12px}