:root{--green:#075640;--deep:#073b31;--gold:#b58a39;--ink:#173f34;--muted:#65766c;--paper:#f5f7f3}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Tahoma,Arial,sans-serif;font-size:16px}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #b58a39;outline-offset:5px}header{padding:22px 5%;display:flex;align-items:center;gap:24px;background:#fff;border-bottom:1px solid #e0e7df}.brand{font-weight:700;font-size:21px;color:var(--green);text-decoration:none;display:flex;align-items:center;gap:10px}.brandmark{font-size:36px;line-height:1;color:var(--gold)}.occasion{margin-inline-start:auto;color:var(--muted);font-size:14px}.small{background:white;border:1px solid #d8e0d9;border-radius:8px;color:var(--green);padding:9px 13px;font-size:14px}main{max-width:1200px;padding:35px 32px 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#dce4da;border-radius:12px;background:white;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--green);padding:15px;transition:.2s}.option:hover:not(:disabled){border-color:var(--green);background:#f0f6f0;transform:translateY(-2px)}.option.correct{background:#e8f3eb;border-color:var(--green)}.option.wrong{border-color:#bd814a;background:#fff7ed}.option:disabled{cursor:default}.option.number{font-size:28px}.feedback{min-height:30px;font-size:15px;line-height:1.7;margin-top:18px;color:var(--green)}.primary{background:var(--green);color:white;border:none;border-radius:9px;padding:13px 26px;margin-top:10px;font-weight:bold}.primary:hover{background:var(--deep)}[hidden]{display:none!important}aside{background:var(--deep);color:#fff;border-radius:20px;padding:30px 24px;position:relative;overflow:hidden}.aside-label{color:#d4bb7d;font-size:14px;margin-bottom:12px}aside 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p{font-size:14px;line-height:1.9;color:#bdd0c7}footer{text-align:center;color:var(--muted);font-size:13px;padding:24px 0 0;line-height:1.8}footer span{padding:0 10px;color:var(--gold)}svg.diagram{width:100%;max-width:290px;height:100px}.success{text-align:center;padding:25px 0}.success .seal{color:var(--gold);font-size:70px}.success h2{font-size:30px}.success p{line-height:1.9;color:var(--muted)}.piece{width:100px;height:100px;border:1px dashed #a5b7a0;background:#f6f8f4;display:flex;align-items:center;justify-content:center}.puzzle{display:grid;grid-template-columns:80px 80px;gap:3px;direction:ltr}.quarter{width:80px;height:65px;background:var(--green)}.quarter.a{clip-path:polygon(100% 0,100% 100%,0 100%)}.quarter.b{clip-path:polygon(0 0,100% 100%,0 100%)}.quarter.c{clip-path:polygon(0 0,100% 0,100% 100%)}.quarter.d{clip-path:polygon(0 0,100% 0,0 100%)}.quarter.empty{clip-path:none;background:transparent;border:2px dashed 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