:root{color-scheme:dark;--bg:#0b121b;--panel:#111e2a;--line:#273746;--text:#eaf1f4;--muted:#9cadba;--accent:#6de1c0;--gold:#edc186;--red:#ff9ca8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 'Segoe UI',system-ui,sans-serif}a{color:var(--accent)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--gold);outline-offset:4px}.shell{display:grid;grid-template-columns:235px minmax(0,1fr);min-height:100vh}aside{padding:34px 22px;border-right:1px solid var(--line);display:flex;flex-direction:column;background:#0e1822;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;text-decoration:none;color:var(--text);font-weight:750;letter-spacing:1.5px;line-height:1.4}.brand small{display:block;font-size:9px;color:var(--muted);letter-spacing:1px;margin-top:6px}.logo{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--accent);border-radius:10px;color:var(--accent);font-size:20px}.nav-label{font-size:10px;color:#758c9c;letter-spacing:1.8px;margin:46px 10px 14px}nav{display:grid;gap:7px}nav a{padding:10px 13px;border-radius:7px;color:var(--muted);text-decoration:none;font-size:14px;border:1px solid transparent}nav a.active{background:#18362f;color:var(--accent);border-color:#2d5649}nav a:hover{background:#172b39}nav .icon{display:inline-block;width:28px;color:#79939f}.sidebar-foot{margin-top:auto;font-size:11px;color:var(--muted);padding:24px 6px 0}.sidebar-foot p{line-height:1.8;margin:18px 0}.online-dot{display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:50%;margin-right:5px}.workspace{min-width:0}header{height:78px;border-bottom:1px solid var(--line);padding:0 40px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}.header-tag{font-size:10px;letter-spacing:1.5px}.header-tag b{font-weight:400;color:var(--accent);margin-left:16px}main{max-width:1280px;margin:auto;padding:36px 40px 50px}h1,h2,h3,p{margin-top:0}h1{font-size:34px;line-height:1.2;font-weight:650;letter-spacing:-1px;margin-bottom:12px}h2{font-size:21px;letter-spacing:-.4px;line-height:1.4}h3{font-size:16px}p{color:var(--muted)}.eyebrow{color:var(--accent);font-size:10px;letter-spacing:2px;font-weight:700;margin-bottom:12px}.muted,small{color:var(--muted)}.cta{border-color:#315149;background:linear-gradient(135deg,#163329 0%,#11232c 100%);margin:26px 0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:24px 0}.panel,.stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px}.stat{padding:18px}.stat strong{display:block;font-size:27px;font-weight:600}.stat small{font-size:11px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.stack{display:grid;gap:12px}.btn,button{background:#1b303e;color:var(--text);border:1px solid #395361;border-radius:7px;padding:10px 16px}.btn{display:inline-block;text-decoration:none;text-align:center}.primary{background:var(--accent);color:#0c241f;border-color:var(--accent);font-weight:650}.quiet{background:transparent;border-color:var(--line);color:var(--muted)}.small{font-size:12px}.badge{font-size:10px;letter-spacing:.6px;color:var(--accent);background:#1a3631;border:1px solid #315349;border-radius:5px;padding:3px 7px;display:inline-block}.gold{color:var(--gold)}.bar{height:5px;background:#283946;border-radius:5px;margin:12px 0;overflow:hidden}.bar span{height:100%;background:var(--accent);display:block}.domain{padding:16px 0;border-bottom:1px solid var(--line)}.domain:last-child{border:0}.domain strong{font-size:13px}.domain small{font-size:11px}.list-row{padding:14px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border:0}select,input,textarea{background:#0d1822;color:var(--text);border:1px solid #3a5060;border-radius:6px;padding:10px;max-width:100%}label{font-size:12px;color:var(--muted);display:block}label select,label input{display:block;margin-top:7px;width:100%}.filters{display:flex;gap:14px;flex-wrap:wrap;margin:22px 0}.filters label{min-width:140px;flex:1}.card-face{min-height:280px;text-align:center;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:36px;background:linear-gradient(145deg,#182d3b,#12252d);border:1px solid #36515e;border-radius:12px;width:100%;margin:20px 0}.card-face h2{font-size:27px;max-width:720px}.answer{color:var(--accent)}.feedback{padding:22px;border:1px solid #376759;background:#132e28;border-radius:8px;margin:20px 0}.feedback.bad{border-color:#7c4e57;background:#30212b}.feedback p{margin-bottom:8px}.option{display:flex;align-items:flex-start;gap:14px;padding:16px;background:#101d29;border:1px solid var(--line);border-radius:8px;font-size:15px;color:var(--text);cursor:pointer;margin:10px 0}.option input{margin-top:6px;accent-color:var(--accent)}.option:has(input:checked){border-color:var(--accent);background:#17342f}.explanation{padding:12px 0;border-bottom:1px solid var(--line)}.explanation strong{color:var(--text)}.notice{padding:13px 16px;border-left:3px solid var(--gold);background:#27291f;font-size:12px;color:#d6ccaf;margin:18px 0}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:12px 9px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:500}.scroll{overflow:auto}details{border-bottom:1px solid var(--line);padding:14px 0}summary{cursor:pointer;color:var(--text)}textarea{width:100%;min-height:80px}footer{border-top:1px solid var(--line);padding:20px 40px;color:#78909f;font-size:10px}#toast{position:fixed;bottom:20px;right:20px;max-width:450px;padding:0;background:#224437;color:var(--text);border-radius:8px;z-index:20}#toast:not(:empty){padding:16px;border:1px solid var(--accent)}.skip{position:fixed;top:-100px}.skip:focus{top:0;background:var(--bg);padding:10px;z-index:99}.exam-nav{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}.exam-nav button{padding:6px 11px}.exam-nav .answered{border-color:var(--accent)}.exam-nav .flagged{color:var(--gold)}.exam-nav .current{background:#355547}.timer{font-variant-numeric:tabular-nums;color:var(--gold)}.hidden{display:none!important}@media(max-width:1050px){.shell{grid-template-columns:190px 1fr}aside{padding:24px 12px}main{padding:28px 24px}header{padding:0 24px}.stats{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr}}@media(max-width:650px){.shell{display:block}aside{position:static;height:auto;padding:16px;border-right:0;border-bottom:1px solid var(--line)}.brand small,.nav-label,.sidebar-foot{display:none}nav{display:flex;overflow:auto;margin-top:15px;gap:4px}nav a{white-space:nowrap;padding:8px}nav .icon{display:none}header{height:50px;padding:0 18px}main{padding:24px 16px}h1{font-size:28px}.panel{padding:18px}.card-face{padding:24px 18px}.card-face h2{font-size:23px}footer{padding:20px 16px}}

.key{display:inline-block;min-width:1.4em;color:var(--gold);font-weight:700}.picked-wrong{border-left:3px solid #ff8295;padding-left:12px}.picked-right{border-left:3px solid var(--accent);padding-left:12px}
.option input{flex:0 0 auto;width:auto}.option>span{flex:1;text-align:left}
pre.log{background:#070d14;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:6px;padding:12px 14px;margin:14px 0;font:12.5px/1.55 ui-monospace,Consolas,monospace;color:#cfe3d8;white-space:pre-wrap;overflow-wrap:anywhere}
.confidence-set{border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin-top:14px;display:flex;flex-wrap:wrap;gap:14px}.confidence-set legend{font-size:12px;color:var(--muted);padding:0 6px}.confidence-set label{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text)}.confidence-set input{width:auto}