.drv{--drv-accent: #a9b4ff;--drv-blue: #5b8dff;--drv-red: #ff6b5b;--drv-bg: var(--card-bg, #1b1d22);--drv-bg-2: #17191e;--drv-border: var(--card-border, rgba(255, 255, 255, .1));--drv-text: var(--color-text, #e4e4e4);--drv-text-dim: rgba(228, 228, 228, .65);--drv-bad: #ff8a7e;width:100%;max-width:720px;margin:0 auto;color:var(--drv-text);background:var(--drv-bg);border:1px solid var(--drv-border);border-radius:16px;padding:1.5rem;box-sizing:border-box;font-variant-numeric:tabular-nums}.drv-header{display:flex;justify-content:space-between;align-items:baseline;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}.drv-title{font-size:1rem;font-weight:600;letter-spacing:.01em;margin:0;color:var(--drv-text)}.drv-presets{display:flex;gap:.4rem;flex-wrap:wrap}.drv-preset-btn{font-size:.75rem;padding:.35rem .6rem;border-radius:999px;border:1px solid var(--drv-border);background:var(--drv-bg-2);color:var(--drv-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease}.drv-preset-btn:hover,.drv-preset-btn:focus-visible{border-color:var(--drv-accent);color:var(--drv-text)}.drv-explainer{font-size:.8rem;color:var(--drv-text-dim);line-height:1.5;margin:0 0 1rem}.drv-explainer code{background:var(--drv-bg-2);border:1px solid var(--drv-border);border-radius:4px;padding:.05rem .3rem;font-size:.75rem;color:var(--drv-text)}.drv-toggle-row{display:flex;flex-wrap:wrap;gap:1.25rem;margin-bottom:1rem}.drv-toggle-group{display:flex;gap:.4rem}.drv-toggle-btn{font-size:.75rem;padding:.4rem .7rem;border-radius:999px;border:1px solid var(--drv-border);background:var(--drv-bg-2);color:var(--drv-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.drv-toggle-btn:hover,.drv-toggle-btn:focus-visible{border-color:var(--drv-accent);color:var(--drv-text)}.drv-toggle-btn.active{background:var(--drv-accent);color:#14151a;font-weight:600;border-color:var(--drv-accent)}.drv-fields{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.drv-field{display:flex;flex-direction:column;gap:.35rem}.drv-field label{font-size:.78rem;color:var(--drv-text-dim)}.drv-input-row{display:flex;gap:.5rem}.drv-input{flex:1;min-width:0;background:var(--drv-bg-2);border:1px solid var(--drv-border);border-radius:8px;color:var(--drv-text);font-size:1rem;padding:.5rem .65rem;outline:none;transition:border-color .15s ease}.drv-input:focus{border-color:var(--drv-accent)}.drv-unit-select{background:var(--drv-bg-2);border:1px solid var(--drv-border);border-radius:8px;color:var(--drv-text);font-size:.85rem;padding:.5rem;outline:none;cursor:pointer}.drv-headline-card{border-radius:12px;padding:.9rem 1rem;margin-bottom:1.1rem;text-align:center;border:1px solid var(--drv-border);background:var(--drv-bg-2)}.drv-headline-card--red{border-color:var(--drv-red);background:#ff6b5b14}.drv-headline-card--blue{border-color:var(--drv-blue);background:#5b8dff14}.drv-headline{font-size:1.2rem;font-weight:700;color:var(--drv-text)}.drv-headline-sub{font-size:.8rem;color:var(--drv-text-dim);margin-top:.35rem}.drv-headline-compare{font-size:.72rem;color:var(--drv-text-dim);margin-top:.45rem;padding-top:.45rem;border-top:1px dashed var(--drv-border)}.drv-chart-wrap{background:var(--drv-bg-2);border:1px solid var(--drv-border);border-radius:12px;padding:.75rem .75rem .5rem;margin-bottom:1.1rem}.drv-gauge-svg,.drv-curve-svg{width:100%;height:auto;display:block;overflow:visible}.drv-gauge-relzone{fill:var(--drv-bad);opacity:.2}.drv-gauge-tick{stroke:var(--drv-text-dim);stroke-width:1}.drv-gauge-marker{fill:var(--drv-text)}.drv-gauge-marker-label{fill:var(--drv-text);font-size:11px;font-weight:600}.drv-gauge-end-label{fill:var(--drv-text-dim);font-size:10px;font-style:italic}.drv-chart-gridline{stroke:var(--drv-border);stroke-width:1}.drv-chart-axis-line{stroke:var(--drv-text-dim);stroke-width:1}.drv-chart-axis-label{fill:var(--drv-text-dim);font-size:10px}.drv-curve-classical{fill:none;stroke:var(--drv-text-dim);stroke-width:2}.drv-curve-relativistic{fill:none;stroke:var(--drv-accent);stroke-width:2.5}.drv-curve-point{fill:var(--drv-red);stroke:#14151a;stroke-width:1.5}.drv-chart-caption{font-size:.72rem;color:var(--drv-text-dim);margin:.35rem 0 0;text-align:center;line-height:1.4}.drv-note{font-size:.78rem;color:var(--drv-text-dim);background:var(--drv-bg-2);border:1px solid var(--drv-border);border-left:3px solid var(--drv-accent);border-radius:8px;padding:.6rem .75rem;line-height:1.45;margin:0 0 1rem}.drv-note--warn{border-left-color:var(--drv-bad)}.drv-footer-row{display:flex;justify-content:flex-end}.drv-copy-btn{font-size:.78rem;padding:.4rem .75rem;border-radius:8px;border:1px solid var(--drv-border);background:var(--drv-bg-2);color:var(--drv-text-dim);cursor:pointer;transition:border-color .15s ease,color .15s ease}.drv-copy-btn:hover,.drv-copy-btn:focus-visible{border-color:var(--drv-accent);color:var(--drv-text)}