:root{--bg-light:#1a1a1a;--bg:#0d0d0d;--bg-dark:#000;--text:#f2f2f2;--text-muted:#bfbfbf;--primary:#247ba0;--difficulty-1:#2e7d32;--difficulty-2:#f9a825;--difficulty-3:#ef6c00;--difficulty-4:#c62828;--correct:#2e7d32;--incorrect:#c62828;--shadow:inset 0 1px 2px #ffffff4d, 0 2px 4px #0000004d, 0 4px 8px #00000026;--shadow-small:inset 0 1px 1px #ffffff40, 0 2px 3px #00000026;--section-padding-horizontal:160px;--section-padding-vertical:60px;--section-max-width:720px;--header-height:60px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4rem;--space-9:6rem;--radius-big:16px;--radius-small:12px}@media (width<=768px){:root{--section-padding-horizontal:60px;--section-padding-vertical:40px;--section-max-width:720px;--header-height:40px}}html{scroll-behavior:smooth;font-size:16px}body{color:var(--text);background-color:var(--bg-dark);text-transform:lowercase;font-family:Roboto Mono,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-size:1rem;line-height:1.5}*,:before,:after{box-sizing:border-box}html,body{margin:0;padding:0}img,picture,video,canvas,svg{max-width:100%;margin:0;padding:0;display:block}button,input,textarea,select{font:inherit}a{color:inherit;margin:0;padding:0;text-decoration:none}::selection{background:var(--primary);color:#fff}h1,h2,h3,h4,h5,h6,p,small{margin:0;padding:0}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}*{scrollbar-width:thin;scrollbar-color:var(--bg-light) var(--bg)}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background-color:var(--bg-light);box-shadow:var(--shadow);border-radius:999px}.heading-big,h1{color:var(--text);font-size:3rem;font-weight:700}.heading-medium,h2{color:var(--text);font-size:2.5rem;font-weight:700}.heading-small,h3{color:var(--text-muted);font-size:1.5rem;font-weight:500}p{color:var(--text-muted);font-size:1rem;font-weight:400}ul{margin:0;padding:0;list-style:inside}ul li{color:var(--text-muted);font-size:1rem;font-weight:400}small{color:var(--text);font-size:.75rem;font-weight:300}.divider,hr{border:none;border-top:2px solid var(--text-muted);margin:0}section,.section{width:100%;padding-inline:var(--section-padding-horizontal);padding-block:var(--section-padding-vertical)}section>div,.section-content{width:100%;max-width:var(--section-max-width);gap:var(--space-4);margin-inline:auto;display:flex}button{all:unset;box-sizing:border-box;cursor:pointer}button,.hover{transition:transform .15s}button:hover,.hover:hover{cursor:pointer;transform:translateY(-3px)}.row{align-items:center;gap:var(--space-3);display:flex}.link{color:var(--primary);text-underline-offset:2px;cursor:pointer;font-weight:600;text-decoration:none}.link:visited{color:var(--primary);text-decoration:underline}.link:hover{text-decoration:underline}.link:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.link:active{color:var(--primary)}.question-parent{gap:var(--space-6);flex-direction:column;display:flex}.question-label{font-variant-numeric:oldstyle-nums}.question-title{color:var(--text-muted);font-size:1.5rem}.chip{border-radius:var(--radius-small);padding:var(--space-1) var(--space-3);background-color:var(--bg);box-shadow:var(--shadow);align-items:center;gap:var(--space-2);height:fit-content;color:var(--text-muted);display:flex}.question-header{border-radius:var(--radius-big);gap:var(--space-2);flex-direction:column;display:flex}.difficulty-1:before,.difficulty-2:before,.difficulty-3:before,.difficulty-4:before{content:"";width:var(--space-2);height:var(--space-2);border-radius:50%;display:inline-block}.difficulty-1:before{background:var(--difficulty-1)}.difficulty-2:before{background:var(--difficulty-2)}.difficulty-3:before{background:var(--difficulty-3)}.difficulty-4:before{background:var(--difficulty-4)}.content{color:var(--text)}.alternative-list{gap:var(--space-3);flex-direction:column;display:flex}.alternative{width:100%;min-height:3.25rem;padding:var(--space-3);border-radius:var(--radius-small);background-color:var(--bg-light);box-shadow:var(--shadow);color:var(--text);align-items:center;transition:background-color .12s,opacity .12s,transform .12s;display:flex}.alternative:hover,.alternative-selected{cursor:pointer;background-color:var(--bg)}.alternative-select{align-items:center;gap:var(--space-2);color:inherit;cursor:pointer;background:0 0;border:0;padding:0;display:flex}.alternative-circle{border:2px solid #fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:1.125rem;height:1.125rem;display:flex}.alternative-circle-inner{background-color:#fff;border-radius:50%;width:.5rem;height:.5rem}.alternative-index{color:var(--text-muted);font-variant-numeric:oldstyle-nums;-webkit-user-select:none;user-select:none}.alternative-text{margin-left:var(--space-2);flex:1;line-height:1.5}.alternative-crossed-out{opacity:.3}.alternative-crossed-out .alternative-text{text-decoration:line-through}.alternative-crossed-out .alternative-cross{opacity:1}.alternative-correct{background-color:color-mix(in srgb, var(--correct) 12%, var(--bg-light))}.alternative-correct:hover,.alternative-correct.alternative-selected{background-color:color-mix(in srgb, var(--correct) 18%, var(--bg))}.alternative-incorrect{background-color:color-mix(in srgb, var(--incorrect) 12%, var(--bg-light))}.alternative-incorrect:hover,.alternative-incorrect.alternative-selected{background-color:color-mix(in srgb, var(--incorrect) 18%, var(--bg))}.primary-button{background-color:var(--primary);padding:var(--space-3) var(--space-6);border-radius:var(--radius-small);box-shadow:var(--shadow);width:fit-content;height:fit-content;color:var(--text);font-weight:600}.bank-grid{flex-wrap:wrap;display:flex}.question{background-color:var(--bg-light);width:80px;max-width:80px;height:80px;max-height:80px;color:var(--text);border-radius:var(--radius-big);box-shadow:var(--shadow);font-variant-numeric:oldstyle-nums;justify-content:center;align-items:center;font-size:24px;font-weight:600;display:flex}.header{width:100%;height:var(--header-height);background-color:var(--bg);z-index:1000;padding:var(--space-3) var(--section-padding-horizontal);justify-content:center;align-items:center;display:flex;position:sticky;top:0;box-shadow:0 2px 4px #0000004d,0 4px 8px #00000026}.header-container{width:100%;height:100%;max-width:var(--section-max-width);margin-inline:auto;justify-content:space-between;align-items:stretch;gap:20px;margin:0;display:flex}.nav ul{gap:var(--space-5);margin:0;padding:0;list-style:none;display:flex}.nav li{position:relative}.nav-wrapper{align-items:center;width:100%;height:100%;display:flex}.nav li .nav-link{color:var(--text);transition:transform .15s;display:block}.nav li .nav-link:hover{cursor:pointer;text-decoration:none;transform:translateY(-3px)}