.carbon-hero{padding:4rem 0 2rem;background:var(--paper, #fff)}.carbon-h1{font-family:var(--font-display, serif);font-size:clamp(2rem,4.5vw,2.8rem);font-weight:500;color:var(--nile-900, #0a1f3d);letter-spacing:-.02em;line-height:1.15;margin:.6rem 0 1.5rem}.carbon-h1 em{font-style:italic;color:var(--nile-700, #1d3a64)}.carbon-lead{font-size:1.05rem;color:var(--ink-700, #384663);line-height:1.55;max-width:760px}.carbon-calc-section{padding:2rem 0 5rem}.carbon-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}@media(max-width:880px){.carbon-grid{grid-template-columns:1fr}}.carbon-inputs{background:var(--paper, #fff);border:1px solid var(--line, #d9dde3);border-radius:var(--radius-xl);padding:1.6rem 1.6rem 1.8rem}.carbon-h2{font-family:var(--font-display, serif);font-size:1.3rem;font-weight:500;color:var(--nile-900, #0a1f3d);margin:0 0 1.2rem}.carbon-field{display:flex;flex-direction:column;margin-bottom:1.2rem}.carbon-label{font-size:.85rem;font-weight:600;color:var(--nile-900, #0a1f3d);margin-bottom:.35rem}.carbon-help{font-size:.75rem;color:var(--ink-500, #6c757d);margin-top:.3rem;line-height:1.4}.carbon-field input[type=number],.carbon-field select{font-family:inherit;font-size:.95rem;padding:.65rem .75rem;border:1px solid var(--line, #d9dde3);border-radius:var(--radius-md);background:var(--sand-50, #fdfbf2);color:var(--nile-900, #0a1f3d);outline:none;transition:border-color .15s}.carbon-field input[type=number]:focus,.carbon-field select:focus{outline:none;border-color:#3b82f6;background:#fff;box-shadow:0 0 0 3px #3b82f647}.carbon-field input[type=range]{width:100%;accent-color:var(--nile-900, #0a1f3d);margin:.4rem 0 .2rem}.carbon-rpet-marks{display:flex;justify-content:space-between;font-size:.7rem;color:var(--ink-500, #6c757d);font-family:ui-monospace,monospace}.carbon-methodology{margin-top:.6rem;padding:.9rem 1rem;background:var(--sand-50, #fdfbf2);border:1px solid var(--line, #d9dde3);border-radius:8px;font-size:.85rem}.carbon-methodology summary{cursor:pointer;font-weight:600;color:var(--nile-900, #0a1f3d);font-size:.85rem}.carbon-method-body{margin-top:.8rem;padding-top:.8rem;border-top:1px solid var(--line, #d9dde3)}.carbon-method-body p{margin:0 0 .7rem;font-size:.82rem;color:var(--ink-700, #384663);line-height:1.55}.carbon-disclaimer{font-style:italic;color:var(--ink-500, #6c757d)!important;border-left:3px solid var(--nile-700, #1d3a64);padding-left:.7rem;margin-top:.5rem!important}.carbon-outputs{position:sticky;top:1.5rem}@media(max-width:880px){.carbon-outputs{position:static}}.carbon-output-card{background:var(--paper, #fff);border:1px solid var(--line, #d9dde3);border-radius:var(--radius-xl);padding:1.3rem 1.5rem;margin-bottom:1rem}.carbon-output-headline{background:var(--nile-900, #0a1f3d);color:#fff;border-color:var(--nile-900, #0a1f3d)}.carbon-output-headline .carbon-output-label,.carbon-output-headline .carbon-output-sub{color:#ffffffb3}.carbon-output-label{font-size:.78rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--nile-700, #1d3a64);margin-bottom:.4rem}.carbon-output-value{font-family:var(--font-display, serif);font-size:2.3rem;font-weight:500;color:inherit;letter-spacing:-.02em;line-height:1.05}.carbon-output-headline .carbon-output-value{color:#fff}.carbon-output-sub{font-size:.78rem;color:var(--ink-500, #6c757d);margin-top:.3rem;line-height:1.4}.carbon-equiv-row{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin-bottom:1.2rem}.carbon-equiv{background:var(--sand-50, #fdfbf2);border:1px solid var(--line, #d9dde3);border-radius:10px;padding:1rem 1.1rem;text-align:center}.carbon-equiv-value{font-family:var(--font-display, serif);font-size:1.7rem;color:var(--nile-900, #0a1f3d);font-weight:500;letter-spacing:-.02em;line-height:1.1}.carbon-equiv-label{font-size:.72rem;color:var(--ink-500, #6c757d);margin-top:.4rem;line-height:1.35}.carbon-cta-row{display:flex;gap:.6rem;flex-wrap:wrap}