:root{--blue:#1769aa;--navy:#102a43;--ink:#182230;--muted:#607086;--line:#dfe5ec;--bg:#f5f7fb;--surface:#fff;--red:#c63c38;--green:#218749;--radius:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(1.5rem,2.5vw,2rem);line-height:1.45}h2{font-size:1.2rem}h3{font-size:1rem}p{color:var(--muted)}.brand{font-weight:900;color:var(--blue);font-size:1.3rem;display:block}.brand span{display:block;font-size:.72rem;font-weight:500;color:#8492a4;margin-top:-3px}.primary,.subtle{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:10px;padding:10px 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#dce2e8;border-radius:12px}.options{display:grid;gap:10px;margin-top:14px}.option{display:flex;gap:10px;align-items:flex-start;padding:11px 12px;border:1px solid #d9e0e8;border-radius:11px;cursor:pointer;background:#fff;font-weight:400}.option:hover,.option.selected{background:#f7fbff;border-color:#9ec8e8}.option input{width:auto;margin-top:8px;accent-color:var(--blue)}.letter{min-width:28px;height:28px;border-radius:50%;background:#e9f3fb;color:var(--blue);font-weight:800;display:inline-flex;align-items:center;justify-content:center}.opttext{flex:1;min-width:0}.opttext img,.question-body img{max-width:100%;height:auto}.opttext .piece{font-size:17px;margin:0;justify-content:flex-start}.opttext .brace{font-size:55px}.opttext .cases>span{grid-template-columns:auto auto;gap:12px}.opt-math-img{max-height:105px;vertical-align:middle}.exam-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;background:#fff;border:1px solid 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#bankImport{display:grid;gap:9px;border-top:1px solid var(--line);padding-top:14px}#bankImport select{width:100%;padding:10px 12px;border:1px solid #d3dce5;border-radius:10px;background:#fff;margin-top:6px}#bankImport button{width:max-content}