.fld{--fld-accent: #a9b4ff;--fld-bg: var(--card-bg, #1b1d22);--fld-bg-2: #17191e;--fld-border: var(--card-border, rgba(255, 255, 255, .1));--fld-text: var(--color-text, #e4e4e4);--fld-text-dim: rgba(228, 228, 228, .65);width:100%;max-width:720px;margin:0 auto;color:var(--fld-text);background:var(--fld-bg);border:1px solid var(--fld-border);border-radius:16px;padding:1.5rem;box-sizing:border-box;font-variant-numeric:tabular-nums}.fld-header{display:flex;justify-content:space-between;align-items:baseline;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}.fld-title{font-size:1rem;font-weight:600;letter-spacing:.01em;margin:0;color:var(--fld-text)}.fld-presets{display:flex;gap:.4rem;flex-wrap:wrap}.fld-preset-btn{font-size:.75rem;padding:.35rem .6rem;border-radius:999px;border:1px solid var(--fld-border);background:var(--fld-bg-2);color:var(--fld-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease}.fld-preset-btn:hover,.fld-preset-btn:focus-visible{border-color:var(--fld-accent);color:var(--fld-text)}.fld-explainer{font-size:.8rem;color:var(--fld-text-dim);line-height:1.5;margin:0 0 1rem}.fld-explainer strong{color:var(--fld-text)}.fld-solve-toggle{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:1rem}.fld-solve-btn{font-size:.75rem;padding:.4rem .7rem;border-radius:999px;border:1px solid var(--fld-border);background:var(--fld-bg-2);color:var(--fld-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.fld-solve-btn:hover,.fld-solve-btn:focus-visible{border-color:var(--fld-accent);color:var(--fld-text)}.fld-solve-btn.active{background:var(--fld-accent);color:#14151a;font-weight:600;border-color:var(--fld-accent)}.fld-fields{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.fld-field{display:flex;flex-direction:column;gap:.35rem}.fld-field label{font-size:.78rem;color:var(--fld-text-dim)}.fld-input-row{display:flex;gap:.5rem}.fld-input{flex:1;min-width:0;background:var(--fld-bg-2);border:1px solid var(--fld-border);border-radius:8px;color:var(--fld-text);font-size:1rem;padding:.5rem .65rem;outline:none;transition:border-color .15s ease}.fld-input:focus{border-color:var(--fld-accent)}.fld-sigma-input{background:var(--fld-bg-2);border:1px dashed var(--fld-border);border-radius:8px;color:var(--fld-text-dim);font-size:.82rem;padding:.4rem .6rem;outline:none;transition:border-color .15s ease}.fld-sigma-input:focus{border-color:var(--fld-accent);color:var(--fld-text)}.fld-unit-select{background:var(--fld-bg-2);border:1px solid var(--fld-border);border-radius:8px;color:var(--fld-text);font-size:.85rem;padding:.5rem;outline:none;cursor:pointer}.fld-computed{display:flex;align-items:center;justify-content:space-between;gap:.5rem;background:#a9b4ff14;border:1px solid var(--fld-accent);border-radius:8px;padding:.5rem .65rem;font-size:1rem;font-weight:600;color:var(--fld-text)}.fld-table{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1rem}.fld-row{display:flex;justify-content:space-between;align-items:baseline;gap:.75rem;background:var(--fld-bg-2);border:1px solid var(--fld-border);border-radius:8px;padding:.55rem .75rem}.fld-row--active{border-color:var(--fld-accent);background:#a9b4ff14}.fld-row-label{font-size:.85rem;color:var(--fld-text-dim)}.fld-row-value{font-size:.95rem;font-weight:600;color:var(--fld-text);white-space:nowrap}.fld-row-unit{font-size:.78rem;font-weight:400;color:var(--fld-text-dim)}.fld-chart-wrap{background:var(--fld-bg-2);border:1px solid var(--fld-border);border-radius:12px;padding:.75rem .75rem .5rem;margin-bottom:1rem}.fld-chart-svg{width:100%;height:auto;display:block;overflow:visible}.fld-chart-gridline{stroke:var(--fld-border);stroke-width:1}.fld-chart-axis-line{stroke:var(--fld-text-dim);stroke-width:1}.fld-chart-axis-label{fill:var(--fld-text-dim);font-size:10px}.fld-chart-fit-line{stroke:var(--fld-accent);stroke-width:2.5;fill:none}.fld-chart-point{fill:var(--fld-accent);stroke:#14151a;stroke-width:1.5}.fld-chart-point--ref{fill:#e0c05c;opacity:.9}.fld-chart-point-label{fill:var(--fld-text);font-size:11px;font-weight:600}.fld-chart-point-label--ref{fill:#e0c05c;font-size:10px;font-weight:500}.fld-chart-caption{font-size:.72rem;color:var(--fld-text-dim);margin:.35rem 0 0;text-align:center;line-height:1.4}.fld-note{font-size:.78rem;color:var(--fld-text-dim);background:var(--fld-bg-2);border:1px solid var(--fld-border);border-left:3px solid var(--fld-accent);border-radius:8px;padding:.6rem .75rem;line-height:1.45;margin:0 0 1rem}.fld-note--warn{border-left-color:#ff8a7e}.fld-footer-row{display:flex;justify-content:flex-end}.fld-copy-btn{font-size:.78rem;padding:.4rem .75rem;border-radius:8px;border:1px solid var(--fld-border);background:var(--fld-bg-2);color:var(--fld-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease}.fld-copy-btn:hover,.fld-copy-btn:focus-visible{border-color:var(--fld-accent);color:var(--fld-text)}