:root{color-scheme:dark;--bg:#0f172a;--card:#15233d;--card2:#101e35;--line:#294260;--muted:#a9bdd5;--white:#f8fafc;--cyan:#06b6d4;--indigo:#818cf8;--green:#10b981;--red:#fb7185;--amber:#f59e0b}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 12% 0%,#172e52 0%,var(--bg) 36%,#0b1424 100%);color:var(--white);font-family:system-ui,-apple-system,'Noto Sans Devanagari','Mangal',sans-serif;line-height:1.52}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.48;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #fcd34d;outline-offset:3px}.shell{max-width:1000px;margin:0 auto;padding:0 16px 80px}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0 24px}.brand{display:flex;align-items:center;gap:13px}.logo{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(145deg,#0891b2,#4338ca);font-size:26px;font-weight:900}.brand strong{font-size:17px;letter-spacing:.01em}.brand small{display:block;color:var(--muted);font-size:12px}.pill{font-size:12px;border:1px solid #276979;background:#0d3546;color:#a5f3fc;padding:6px 10px;border-radius:99px}.hero{padding:28px;border:1px solid var(--line);border-radius:23px;background:linear-gradient(125deg,#183353,#111e36 60%,#1e2149);box-shadow:0 12px 45px #0003}.eyebrow{font-weight:750;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#67e8f9}.hero h1{font-size:clamp(24px,4.1vw,36px);line-height:1.16;letter-spacing:-.03em;margin:9px 0}.hero p{margin:4px 0;color:#c3d3e9}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}.chip{background:#1a3656;border:1px solid #386083;border-radius:12px;padding:6px 10px;font-size:12px;color:#d3e8fc}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:17px;margin-top:18px}.card{background:var(--card2);border:1px solid var(--line);border-radius:19px;padding:22px;margin-top:18px}.grid2 .card{margin:0}.card h2{font-size:19px;margin:0 0 15px}.muted{color:var(--muted)}.label{font-size:13px;font-weight:750;color:#c6d8ea;display:block;margin:12px 0 7px}.select,.number{width:100%;min-height:46px;border-radius:11px;border:1px solid #49617d;color:#f8fafc;background:#152843;padding:10px 12px}.seg{display:flex;gap:7px;flex-wrap:wrap}.btn{border-radius:11px;padding:11px 15px;border:1px solid #3b5777;background:#203756;color:#f8fafc;font-weight:700;min-height:44px;transition:background .12s}.btn:hover{background:#2e5074}.btn.on{background:#0a5370;border-color:#14b8d4;color:#ecfeff}.btn.primary{border:0;background:linear-gradient(110deg,#0891b2,#4f46e5);color:#fff;box-shadow:0 5px 16px #0891b23c}.btn.green{background:#047857;border-color:#10b981}.btn.red{background:#701f36;border-color:#e11d48}.btn.ghost{background:transparent}.btn.full{width:100%}.btn.small{font-size:12px;min-height:37px;padding:7px 11px}.pick{display:flex;flex-wrap:wrap;gap:8px}.pick .btn{min-height:37px}.countrow{display:flex;align-items:center;gap:15px}.countrow input{width:96px}.range{flex:1;width:100%;accent-color:var(--cyan)}.note{font-size:13px;color:#b7cbe0;margin-top:8px}.rulelist{padding-left:18px;color:#d5e4f3}.rulelist li{margin:9px 0}.resume{border-color:#d3a12c;background:#372c19}.actions{display:flex;gap:9px;flex-wrap:wrap}.actions .btn{flex:1}.topline{display:flex;align-items:center;gap:12px;justify-content:space-between;flex-wrap:wrap;margin-bottom:12px}.progress{height:8px;background:#233754;border-radius:20px;overflow:hidden}.progress span{height:100%;display:block;background:linear-gradient(90deg,var(--cyan),#818cf8)}.question{margin-top:18px}.qmeta{display:flex;align-items:center;gap:8px;justify-content:space-between;flex-wrap:wrap}.category{font-size:12px;font-weight:750;padding:6px 10px;border-radius:8px;background:#203557;color:#93c5fd}.category.diagram{color:#67e8f9}.category.multi{color:#a5b4fc}.category.ar{color:#fcd34d}.category.matrix{color:#6ee7b7}.qtext{font-size:19px;line-height:1.55;font-weight:690;white-space:pre-wrap}.qtext.hi{font-size:17px;font-weight:550;color:#d3e4f4}.option{display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;margin-top:10px;border:1px solid #37506c;background:#182c47;color:var(--white);padding:13px 14px;border-radius:14px;min-height:62px}.option:hover{border-color:#5b9eb7}.option.chosen{border-color:#22d3ee;background:#173e56;box-shadow:inset 0 0 0 1px #06b6d4}.key{display:grid;place-items:center;flex:none;height:30px;width:30px;border-radius:10px;background:#294668;color:#d5eafe;font-weight:850}.option.chosen .key{background:#0891b2;color:white}.optcopy{flex:1}.optcopy .en{display:block}.optcopy .hi{display:block;color:#c2d5e9;font-size:14px;margin-top:4px}.illustration{width:100%;margin-top:15px}.illustration svg{width:100%;height:auto;display:block}.bottomnav{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.timer{padding:8px 12px;border-radius:10px;background:#133e50;color:#89f0ff;font-weight:800;font-variant-numeric:tabular-nums}.timer.urgent{background:#622637;color:#ffd0da}.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(54px,1fr));gap:8px}.qbutton{border:1px solid #4c637d;background:#162741;color:white;border-radius:9px;min-height:53px;font-weight:750;line-height:1.1}.qbutton span{display:block;font-size:11px;color:#b4cbdf}.qbutton.answered{border-color:#10b981}.qbutton.review{border-color:#f59e0b}.qbutton.current{outline:2px solid #38bdf8;outline-offset:1px}.legend{font-size:12px;display:flex;flex-wrap:wrap;gap:12px;color:var(--muted);margin-top:14px}.metricrow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}.metric{border:1px solid #38516e;border-radius:14px;background:#162743;padding:14px}.metric .value{font-size:26px;font-weight:850;line-height:1.2;font-variant-numeric:tabular-nums}.metric .caption{font-size:12px;color:var(--muted);margin-top:4px}.correct{color:#5ee4b2}.wrong{color:#ff8ba0}.score{font-size:clamp(40px,7vw,60px);font-weight:850;letter-spacing:-.05em}.bartrack{height:12px;overflow:hidden;border-radius:20px;background:#263956;display:flex}.bartrack span{display:block;height:100%}.bartrack .yes{background:var(--green)}.bartrack .no{background:var(--red)}.bartrack .skip{background:#60738f}.resultline{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid #2a405d}.reviewcard{border:1px solid #3a5471;border-radius:16px;background:#13243b;padding:19px;margin-top:15px}.reviewcard.good{border-left:5px solid var(--green)}.reviewcard.bad{border-left:5px solid var(--red)}.reviewcard.skip{border-left:5px solid #64748b}.reviewcard h3{margin:4px 0 12px}.review-option{padding:9px 12px;border-radius:10px;margin:7px 0;background:#1b304c;border:1px solid #304969}.review-option.key-correct{border-color:#10b981}.review-option.key-wrong{border-color:#fb7185}.review-option small{display:block;color:#b5cbe0;margin-top:6px}.explain{padding:14px;border-radius:13px;background:#0b3446;margin-top:13px}.history{display:grid;gap:6px}.history div{font-size:13px;padding:7px 0;border-bottom:1px solid #34475d}.foot{text-align:center;font-size:12px;color:#8da6c1;margin-top:35px}@media(max-width:700px){.grid2{grid-template-columns:1fr}.metricrow{grid-template-columns:repeat(2,1fr)}.hero{padding:22px}.card{padding:17px}.qtext{font-size:17px}.qtext.hi{font-size:16px}.shell{padding:0 12px 70px}.nav{padding:14px 0}.brand strong{font-size:14px}.brand small{font-size:11px}.option{padding:11px 12px}.actions .btn{flex:auto}}