:root{--bg:#f5f3ef;--ink:#232622;--muted:#70756d;--paper:#fff;--line:#e0e3da;--accent:#963746;--green:#32674a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px Arial,sans-serif}button,select{font:inherit}button{cursor:pointer}button:focus-visible,select:focus-visible{outline:3px solid #c88e48;outline-offset:3px}button:disabled{opacity:.45;cursor:default}header{height:90px;display:flex;align-items:center;justify-content:space-between;padding:0 6%;border-bottom:1px solid var(--line);background:var(--paper)}.brand{display:flex;align-items:center;gap:15px}.peak{display:block;width:64px;height:54px;flex-shrink:0;color:var(--ink)}.brand b{font-size:26px;letter-spacing:5px}.brand small{display:block;font-size:9px;letter-spacing:1.5px;margin-top:6px}main{max-width:1280px;margin:38px auto;padding:0 28px}.intro{display:flex;justify-content:space-between;align-items:end;margin-bottom:35px}.eyebrow{font-size:10px;letter-spacing:1.8px;color:var(--muted)}h1{font:normal 45px/1.1 Georgia,serif;letter-spacing:-1px;margin:15px 0}h2{font:normal 26px Georgia,serif}.intro p{color:var(--muted)}.layout{display:grid;grid-template-columns:235px 1fr;gap:28px}aside{background:#242d29;color:#f4f2e9;border-radius:15px;padding:25px;height:fit-content}aside small{font-size:10px;letter-spacing:1.5px;color:#a7b7ac}aside h2{margin:10px 0 25px}nav{display:grid;gap:10px}nav button{display:flex;justify-content:space-between;gap:10px;border:0;background:transparent;color:#cdd6cf;border-radius:7px;padding:13px 10px;text-align:left;font-size:13px}nav button.active{background:#3b4840;color:white}.mountain{width:100%;height:120px;margin-top:35px}aside p{font-size:11px;line-height:1.7;color:#b9c6bd}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:23px}.stats>div{padding:19px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.stats strong{display:block;font-size:27px;margin-bottom:6px}.stats span{font-size:11px;color:var(--muted)}.filters{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.filters label{font-size:12px}select{padding:11px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink)}.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:32px}.meta{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:var(--muted)}.badge{color:var(--accent);font-weight:bold}.progress{height:3px;background:var(--line);margin-top:18px}.progress i{display:block;height:100%;background:var(--green)}.context{font-size:12px;line-height:1.6;border-left:2px solid #c7b8a2;padding-left:12px;color:var(--muted);margin:24px 0}.question{font:23px/1.55 Georgia,serif;margin:25px 0 30px}.answers{display:flex;gap:12px}.choice{background:var(--paper);border:1px solid #cbd0c7;border-radius:8px;padding:17px 25px;min-width:150px;text-align:left;color:var(--ink)}.choice[aria-pressed=true]{border:2px solid var(--accent);background:#fbf2f3;padding:16px 24px}.actions{display:flex;justify-content:space-between;gap:10px;border-top:1px solid var(--line);margin-top:28px;padding-top:23px}.primary{background:var(--accent);border:0;color:#fff;border-radius:7px;padding:14px 25px}.secondary{background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:7px;padding:11px 15px;font-size:12px}.feedback{margin-top:23px;padding:22px;background:#edf5ef;border-radius:8px;border-left:3px solid var(--green);line-height:1.7}.feedback.wrong{background:#fcf1ed;border-color:#a65038}.feedback a{color:inherit;font-size:12px}.feedback p{margin-bottom:0}footer{color:var(--muted);font-size:11px;line-height:1.7;margin:20px 0}.empty{text-align:center;padding:35px 0}.dark{--bg:#171c19;--paper:#232b26;--ink:#f1f0e7;--muted:#a8b5ab;--line:#3b473f}.dark .choice[aria-pressed=true]{background:#493039}.dark .feedback{background:#263e30}.dark .feedback.wrong{background:#472e28}@media(max-width:760px){header{height:75px;padding:15px 20px}main{margin:25px auto;padding:0 16px}.intro{display:block}h1{font-size:34px}.intro>.eyebrow{display:block;margin-top:22px}.layout{grid-template-columns:1fr;gap:20px}aside{padding:12px}aside h2,aside>small,.mountain,aside p{display:none}nav{display:flex;flex-wrap:wrap;gap:2px}nav button{font-size:11px;padding:11px 9px}nav span{display:none}.stats{gap:7px}.stats>div{padding:14px 10px}.stats span{font-size:10px}.card{padding:22px}.question{font-size:21px}.choice{min-width:0;flex:1}.filters{gap:8px}select{max-width:100%}.meta{font-size:11px}}

input[type=search]{font:inherit;padding:11px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);max-width:100%}.answers{flex-wrap:wrap}#subject{max-width:100%}
[hidden]{display:none!important}.auth-panel{max-width:480px;margin:65px auto;padding:30px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.auth-panel h1{font-size:35px}.auth-panel p{line-height:1.6;color:var(--muted)}.auth-panel form{display:grid;gap:12px}.auth-panel input{font:inherit;padding:13px;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--ink)}.auth-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}@media(max-width:550px){.auth-panel{margin:35px 16px;padding:24px}}