:root{color-scheme:dark;--bg:#101419;--panel:#1a2027;--line:#313942;--ink:#f4f0e8;--muted:#abb2bc;--lime:#d5ef91;--red:#ffb8af;--green:#b8edc1}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.5}header{position:fixed;inset:0 0 auto;z-index:10;height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,env(safe-area-inset-left));background:#101419f7;border-bottom:1px solid #ffffff0d;backdrop-filter:blur(12px)}.brand{text-decoration:none;color:var(--ink);font-size:20px;font-weight:850;letter-spacing:2px;display:flex;align-items:center;gap:8px}.brand-dot{height:7px;width:7px;background:var(--lime);border-radius:50%}#top-note{font-size:10px;letter-spacing:2px;color:var(--muted)}main{width:min(100%,620px);margin:0 auto;padding:100px 24px 36px;min-height:100dvh}.eyebrow{color:var(--lime);font-size:11px;letter-spacing:2px;font-weight:700;text-transform:uppercase}h1,h2,p{margin:0}h1{font-size:clamp(40px,10vw,64px);line-height:1.06;letter-spacing:-2px;font-weight:650;margin:18px 0}h1 em{font-style:normal;color:var(--lime)}.intro{color:var(--muted);max-width:340px;font-size:15px}.hero-art{position:relative;height:182px;margin:30px 0;display:grid;place-items:center;background:radial-gradient(ellipse at center,#d5ef9114,transparent 70%);overflow:hidden}.orbit{height:150px;width:150px;transform:rotate(-23deg);border:1px solid #d5ef9150;border-radius:38px;position:relative}.orbit:before,.orbit:after{content:'';position:absolute;inset:12px;transform:rotate(30deg);border:1px solid #d5ef9150;border-radius:38px}.orbit:after{inset:24px;transform:rotate(60deg)}.art-center{position:absolute;font:500 72px Georgia,serif;color:var(--lime)}.art-label{position:absolute;bottom:2px;right:6px;color:var(--muted);font-size:10px;letter-spacing:2px}.stats{display:flex;gap:0;margin:24px 0}.stats>div{flex:1;border-right:1px solid var(--line);padding:0 10px}.stats>div:first-child{padding-left:0}.stats>div:last-child{border:0}.stats strong{display:block;font-size:20px;font-weight:600}.stats small{color:var(--muted);font-size:11px}button{font:inherit;cursor:pointer;touch-action:manipulation;border:0}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:4px}.primary{display:block;width:100%;padding:17px 20px;background:var(--lime);color:#182013;border-radius:13px;font-weight:750;min-height:56px;text-align:center}.primary span{float:right}.fine{color:var(--muted);font-size:11px;text-align:center;margin:15px 0}.install{margin-top:24px;border-top:1px solid var(--line);padding-top:20px;font-size:12px;color:var(--muted)}summary{cursor:pointer;color:var(--ink);padding:8px 0;min-height:44px}.install p{padding:6px 0}.install button{margin-top:10px}.quizbar{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.quizbar strong{color:var(--lime)}.progress{height:3px;background:var(--line);border-radius:3px;margin:12px 0 24px;overflow:hidden}.progress>div{height:100%;background:var(--lime);transition:width .2s}.question-top{display:flex;justify-content:space-between;align-items:center}.level{font-size:10px;border:1px solid var(--line);border-radius:20px;padding:4px 9px;color:var(--muted)}h2{font-size:25px;line-height:1.25;font-weight:600;letter-spacing:-.7px;margin:16px 0}.puzzle{background:#eee9dd;color:#162027;border-radius:16px;padding:12px;overflow:hidden;margin:20px 0 10px;min-height:130px;display:grid;place-items:center}.puzzle canvas{width:100%;height:auto;display:block}.puzzle svg{width:100%;height:auto;display:block}.puzzle .sequence{font-size:clamp(20px,6vw,36px);font-weight:650;letter-spacing:1px;text-align:center;padding:24px 0}.visual-note{font-size:11px;color:var(--muted);margin:6px 0 18px}.text-riddle{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:23px;margin:20px 0;font-size:18px;line-height:1.5}.options{display:grid;gap:10px;margin:20px 0}.option{min-height:58px;width:100%;display:flex;align-items:center;gap:14px;text-align:left;padding:12px 15px;background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:12px}.option .letter{width:29px;height:29px;display:grid;place-items:center;background:#ffffff07;border:1px solid var(--line);border-radius:8px;font-size:12px;color:var(--muted);flex-shrink:0}.option.correct{border-color:var(--green);background:#b8edc115}.option.wrong{border-color:var(--red);background:#ffb8af12}.option:disabled{cursor:default;opacity:1}.feedback{padding:16px;border:1px solid var(--line);border-radius:12px;margin:15px 0;background:var(--panel)}.feedback strong{color:var(--green);display:block;margin-bottom:6px}.feedback.miss strong{color:var(--red)}.feedback p{font-size:13px;color:var(--muted)}.ghost{background:none;color:var(--muted);font-size:12px;padding:13px;min-height:44px;border:1px solid var(--line);border-radius:10px}.quizfooter{display:flex;justify-content:space-between;align-items:center;margin-top:20px}.quizfooter small{font-size:11px;color:var(--muted)}.result-number{font-size:88px;color:var(--lime);letter-spacing:-5px;line-height:1.1;margin:30px 0}.result-number small{font-size:24px;letter-spacing:0;color:var(--muted)}.review{margin:25px 0}.review-item{border-bottom:1px solid var(--line);padding:15px 0}.review-item p{font-size:13px;color:var(--muted)}.review-item b{font-size:14px}dialog{border:1px solid var(--line);border-radius:18px;background:var(--panel);color:var(--ink);width:min(90%,400px);padding:24px}dialog::backdrop{background:#0009}dialog button{margin-top:15px}@media(min-width:768px){main{padding-top:120px}.hero-art{height:220px}h1{font-size:64px}}@media(max-width:350px){main{padding:94px 18px 30px}header{padding:0 18px}h2{font-size:23px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}