:root{--ink:#17332f;--ink-2:#1f433c;--ink-3:#295349;--rope:#e8b23d;--rope-dim:#a97e29;--persimmon:#e15b3f;--meadow:#4fae8e;--sky:#7fb8d6;--cloud:#f5f1e6;--cloud-dim:#f5f1e6ad;--line:#f5f1e624;--font-display:"Baloo 2", system-ui, sans-serif;--font-body:"Manrope", system-ui, sans-serif;--radius-sm:8px;--radius-md:14px;--radius-lg:22px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--ink);color:var(--cloud);font-family:var(--font-body);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 15% -10%,#e8b23d14,#0000 45%),radial-gradient(circle at 90% 0,#4fae8e14,#0000 40%);margin:0}h1,h2,h3,.font-display{font-family:var(--font-display);letter-spacing:.01em;margin:0;font-weight:700}p{margin:0}button{font-family:inherit}a{color:inherit}:focus-visible{outline:3px solid var(--rope);outline-offset:3px}@media 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.label{text-transform:uppercase;letter-spacing:.1em;color:var(--cloud-dim);margin-bottom:8px;font-size:.7rem}.ladder-wrap{flex-direction:column;flex:1;justify-content:flex-end;min-height:200px;margin-bottom:20px;display:flex}.input-row{gap:10px;display:flex}.word-input{background:var(--ink-2);border:2px solid var(--line);border-radius:var(--radius-md);color:var(--cloud);font-family:var(--font-display);text-align:center;text-transform:uppercase;letter-spacing:.12em;flex:1;padding:12px;font-size:1.2rem;font-weight:700}.word-input:focus{border-color:var(--rope);outline:none}.error-banner{color:var(--persimmon);text-align:center;margin-top:10px;font-size:.9rem}.result-screen{text-align:center;padding:30px 20px 40px}.result-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px;display:flex}.path-compare{text-align:left;margin-top:26px}.path-compare 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th{color:var(--cloud-dim);font-family:var(--font-display);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:700}.rank-cell{font-family:var(--font-display);color:var(--rope);font-weight:800}.footer-note{text-align:center;color:var(--cloud-dim);padding:20px;font-size:.8rem}.target-number{font-family:var(--font-display);color:var(--rope);font-size:2.4rem;font-weight:800}.number-pool{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:18px;display:flex}.number-tile{border-radius:var(--radius-md);background:var(--ink-3);border:2px solid var(--line);min-width:56px;height:56px;color:var(--cloud);font-family:var(--font-display);cursor:pointer;padding:0 10px;font-size:1.2rem;font-weight:700;transition:border-color .15s,transform .15s,background .15s}.number-tile:hover{border-color:var(--cloud-dim)}.number-tile.selected{background:var(--rope);color:var(--ink);border-color:var(--rope);transform:scale(1.05)}.op-row{justify-content:center;gap:10px;margin-bottom:6px;display:flex}.op-btn{background:var(--ink-2);border:2px solid var(--line);width:52px;height:52px;color:var(--cloud);font-family:var(--font-display);cursor:pointer;border-radius:50%;font-size:1.3rem;font-weight:800;transition:border-color .15s,background .15s}.op-btn:hover:not(:disabled){border-color:var(--cloud-dim)}.op-btn.selected{background:var(--meadow);color:var(--ink);border-color:var(--meadow)}.op-btn:disabled{opacity:.35;cursor:not-allowed}.math-history{flex-direction:column;gap:6px;max-height:160px;margin-bottom:18px;display:flex;overflow-y:auto}.equation-row{font-family:var(--font-body);color:var(--cloud-dim);text-align:center;background:var(--ink-2);border-radius:var(--radius-sm);padding:6px 10px;font-size:.9rem}.equation-row strong{color:var(--rope);font-family:var(--font-display)}.tile.tile-hint,.number-tile.hint{border-color:var(--sky);animation:1.4s ease-in-out infinite hint-pulse;box-shadow:0 0 0 2px #7fb8d659}@keyframes hint-pulse{0%,to{box-shadow:0 0 0 2px #7fb8d659}50%{box-shadow:0 0 0 5px #7fb8d626}}.hint-banner{color:var(--sky);margin-bottom:14px;font-size:.85rem}.hint-btn{position:relative}.hint-cost{color:var(--cloud-dim);font-size:.7rem;font-family:var(--font-body)}.reveal-expr{font-family:var(--font-display);color:var(--meadow);background:var(--ink-2);border-radius:var(--radius-md);text-align:center;word-break:break-word;border:1.5px dashed #4fae8e73;padding:10px 14px;font-size:1.15rem;font-weight:700}