:root{--bg:#0b1120;--surface:#131c30;--surface-raised:#1c2740;--line:#2a3755;--text:#e8ecf4;--muted:#94a3bd;--player:#ff6b5e;--player-deep:#d43f33;--ai:#f5c451;--ai-deep:#cf9a22;--radius:14px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:radial-gradient(900px 500px at 75% -10%, #1b2a4d 0%, transparent 70%), var(--bg);color:var(--text);background-attachment:fixed;font-family:Inter,system-ui,sans-serif;line-height:1.5}h1,h2,p,dl,dd{margin:0}h1,.brand,.stat-value,.verdict{font-family:Sora,Inter,sans-serif}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}button:focus-visible{outline:2px solid var(--ai);outline-offset:2px}.muted{color:var(--muted);font-size:14px}.app{flex-direction:column;max-width:1200px;min-height:100dvh;margin:0 auto;padding:0 24px 24px;display:flex}.topbar{justify-content:space-between;align-items:center;padding:16px 0;display:flex}.brand{align-items:center;gap:10px;font-size:16px;font-weight:600;display:flex}.brand-mark{grid-template-columns:1fr 1fr;gap:2px;width:22px;display:grid}.brand-mark i{aspect-ratio:1;background:var(--player);border-radius:50%}.brand-mark i:nth-child(2),.brand-mark i:nth-child(3){background:var(--ai)}.ghost{border:1px solid var(--line);border-radius:10px;min-width:40px;min-height:40px;padding:0 14px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s}.ghost:hover{background:var(--surface-raised);border-color:var(--muted)}.primary{background:var(--player);color:#2b0805;border-radius:12px;min-height:52px;padding:0 32px;font-family:Sora,Inter,sans-serif;font-size:17px;font-weight:600;transition:transform .12s,background .15s}.primary:hover{background:#ff8277;transform:translateY(-1px)}.primary:active{transform:translateY(0)}.home{flex:1;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:center;gap:64px;padding:16px 0 32px;display:grid}.home h1{letter-spacing:-.03em;font-size:clamp(40px,5.4vw,64px);font-weight:700;line-height:1.05}.home h1 span{color:var(--ai)}.tagline{max-width:44ch;color:var(--muted);margin-top:14px;font-size:18px}.home h2{color:var(--muted);margin:28px 0 10px;font-size:13px;font-weight:500}.levels{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.level{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);text-align:left;flex-direction:column;gap:4px;padding:12px 14px;transition:border-color .15s,background .15s;display:flex}.level:hover{border-color:var(--muted)}.level strong{font-size:15px;font-weight:600}.level span{color:var(--muted);font-size:12.5px;line-height:1.35}.level.selected{border-color:var(--ai);background:var(--surface-raised)}.steppers{flex-wrap:wrap;gap:24px;margin-bottom:28px;display:flex}.stepper{align-items:center;gap:12px;font-size:15px;display:flex}.stepper>div{align-items:center;gap:4px;display:flex}.stepper output{text-align:center;min-width:28px;font-weight:600}.engine{color:var(--muted);margin-top:16px;font-size:14px}.engine p{align-items:center;gap:8px;display:flex}.engine .muted{font-size:13px}.engine.error{color:var(--player);flex-direction:column;align-items:flex-start;gap:8px;display:flex}.dot{background:var(--ai);border-radius:50%;flex:none;width:8px;height:8px}.engine.ready .dot{background:#5fd08f}.engine.loading .dot{animation:1.2s ease-in-out infinite pulse}.loader{background:var(--surface-raised);border-radius:3px;max-width:280px;height:3px;margin-top:8px;position:relative;overflow:hidden}.loader:after{content:"";background:var(--ai);border-radius:3px;width:40%;animation:1.4s ease-in-out infinite slide;position:absolute;inset:0 auto 0 0}.record{text-align:center;grid-template-columns:repeat(3,1fr);margin-top:20px;display:grid}.record div{flex-direction:column-reverse;display:flex}.record dd{font-family:Sora,Inter,sans-serif;font-size:24px;font-weight:600}.record dt{color:var(--muted);font-size:13px}.board{width:min(100%, calc((100dvh - 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