.form{gap:28px;display:grid}.field{min-width:0}fieldset.field{border:0;margin:0;padding:0}.field__label{margin-bottom:8px;padding:0;font-size:1.0625rem;font-weight:600;line-height:1.4;display:block}.field__hint{font-size:var(--fs-small);color:var(--muted);margin:-2px 0 10px;line-height:1.5}.field__input{border:1px solid var(--muted);border-radius:var(--radius-xs);background:var(--cream);width:100%;min-width:0;min-height:50px;color:var(--ink);font:inherit;font-size:var(--fs-body);transition:border-color var(--transition);-webkit-appearance:none;appearance:none;padding:10px 14px;line-height:1.4;display:block}select.field__input{-webkit-appearance:auto;appearance:auto}.field__input:hover{border-color:var(--ink)}.field__input:focus-visible{border-color:var(--blue)}.field__input:disabled{border-color:var(--line);background:var(--sky);color:var(--muted);cursor:not-allowed}textarea.field__input{resize:vertical;min-height:190px}.field--error .field__input,.field__input[aria-invalid=true]{border:2px solid var(--error);padding:9px 13px}.field__error{color:var(--error);align-items:flex-start;gap:8px;margin-top:8px;font-size:1rem;font-weight:600;line-height:1.5;display:flex}.field__error svg{flex-shrink:0;width:18px;height:18px;margin-top:3px}.choice-list{gap:10px;display:grid}.choice{background:var(--cream);border:1px solid var(--muted);border-radius:var(--radius-sm);cursor:pointer;min-height:60px;transition:border-color var(--transition), background var(--transition), box-shadow var(--transition);grid-template-columns:22px minmax(0,1fr);align-items:start;gap:14px;padding:14px 16px;display:grid;position:relative}.choice input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.choice__dot{border:2px solid var(--muted);background:var(--cream);width:22px;height:22px;transition:border-color var(--transition), background var(--transition), box-shadow var(--transition);border-radius:50%;margin-top:1px}.choice__title{font-size:1.0625rem;font-weight:600;line-height:1.4;display:block}.choice__sub{font-size:var(--fs-small);color:var(--muted);margin-top:2px;line-height:1.5;display:block}.choice:hover{border-color:var(--ink)}.choice:has(input:checked){border-color:var(--blue);background:color-mix(in oklch, var(--blue) 8%, var(--cream));box-shadow:inset 0 0 0 .5px var(--blue)}.choice:has(input:checked) .choice__dot{border-color:var(--blue);background:var(--blue);box-shadow:inset 0 0 0 4px var(--cream)}.choice:has(input:focus-visible){outline:3px solid var(--focus-ring,var(--blue));outline-offset:3px}.form-honeypot{width:1px;height:1px;position:absolute;left:-9999px;overflow:hidden}.form-alert{background:var(--apricot);border-radius:var(--radius-sm);border:0;align-items:flex-start;gap:14px;padding:16px 18px;display:flex}.form-alert svg{width:22px;height:22px;color:var(--error);flex-shrink:0;margin-top:2px}.form-alert__title{font-size:1.0625rem;font-weight:600;line-height:1.5}.form-alert__text{margin-top:2px;font-size:1rem;line-height:1.55}.form-alert__text a{color:var(--ink);text-underline-offset:.2em;font-weight:600;text-decoration:underline}.form-actions{justify-items:start;gap:12px;margin-top:4px;display:grid}.form-submit{position:relative}.form-submit__sending{align-items:center;gap:10px;display:none}.form-submit__spinner{border:2.5px solid color-mix(in oklch, var(--cream) 40%, transparent);border-top-color:var(--cream);border-radius:50%;width:18px;height:18px;animation:.8s linear infinite form-spin}@keyframes form-spin{to{transform:rotate(360deg)}}.form-submit.is-sending .form-submit__label,.form-submit.is-sending .form-submit__arrow{display:none}.form-submit.is-sending .form-submit__sending{display:inline-flex}.form-submit:disabled,.form-submit:disabled:hover{border-color:var(--blue);background:var(--blue);color:var(--cream);cursor:progress;transform:none}.form-privacy{color:var(--muted);font-size:1rem;line-height:1.6}.form-privacy a{color:var(--link-color,var(--blue));text-underline-offset:.2em;margin:-9px 0;padding:9px 0;text-decoration:underline;display:inline-block}@media (width<=640px){.form-actions{justify-items:stretch}.form-submit{width:100%}}@media (prefers-reduced-motion:reduce){.form-submit__spinner{animation:none}}.energy-calc[data-astro-cid-wkezw7pp]{border-radius:10px var(--corner) 10px 10px;background:var(--sky);margin:30px 0;padding:30px}.energy-calc__title[data-astro-cid-wkezw7pp]{margin:0 0 10px}.energy-calc__context[data-astro-cid-wkezw7pp],.energy-calc__formula[data-astro-cid-wkezw7pp],.energy-calc__bounds[data-astro-cid-wkezw7pp]{font-size:var(--fs-small);margin:0;line-height:1.5}.energy-calc__formula[data-astro-cid-wkezw7pp]{margin-top:10px;font-weight:600}.energy-calc__inputs[data-astro-cid-wkezw7pp]{grid-template-columns:1fr 1fr;gap:20px;margin:24px 0 10px;display:grid}.energy-calc__bounds[data-astro-cid-wkezw7pp]{color:var(--muted)}.energy-calc[data-astro-cid-wkezw7pp] .btn[data-astro-cid-wkezw7pp]{margin-top:20px}.energy-calc__error[data-astro-cid-wkezw7pp]{color:var(--error);margin:14px 0 0;font-size:1rem;font-weight:600;line-height:1.5}.energy-calc__error[data-astro-cid-wkezw7pp]:empty{margin:0}.energy-calc__result[data-astro-cid-wkezw7pp]{padding-top:12px;font-size:1.15rem;display:block}.energy-calc__result[data-astro-cid-wkezw7pp] strong{font:650 2rem/1.1 var(--font-display);letter-spacing:-.04em;color:var(--blue)}:root:not(.js) .energy-calc__form[data-astro-cid-wkezw7pp],.js .energy-calc__formula[data-astro-cid-wkezw7pp]{display:none}@media (width<=600px){.energy-calc[data-astro-cid-wkezw7pp]{padding:24px}.energy-calc__inputs[data-astro-cid-wkezw7pp]{gap:14px}}@media print{.energy-calc[data-astro-cid-wkezw7pp]{break-inside:avoid}}.diagram-frame[data-astro-cid-evheghju]{container-type:inline-size}.article-diagram[data-astro-cid-evheghju]{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:36px 0;padding:28px 0 24px}.article-diagram[data-astro-cid-evheghju] .article-diagram__heading[data-astro-cid-evheghju]{font:650 27px/1.2 var(--font-display);color:var(--blue);letter-spacing:-.025em;margin:0 0 28px}.article-diagram__drawing[data-astro-cid-evheghju]>svg{width:100%;height:auto;display:block}.article-diagram__narrow[data-astro-cid-evheghju]{display:none}.article-diagram[data-astro-cid-evheghju] .article-diagram__note[data-astro-cid-evheghju]{border-radius:var(--radius-sm) var(--radius-sm) var(--corner-sm) var(--radius-sm);background:var(--apricot);color:var(--ink);margin:16px 0 24px;padding:16px 22px;font-size:18px;line-height:1.5}.article-diagram__note[data-astro-cid-evheghju] strong[data-astro-cid-evheghju]{font-weight:650}.article-diagram[data-astro-cid-evheghju] .article-diagram__caption[data-astro-cid-evheghju]{color:var(--ink);margin-top:24px}.article-diagram[data-astro-cid-evheghju] .article-diagram__summary[data-astro-cid-evheghju]{margin:0;font-size:18px;line-height:1.55}.article-diagram[data-astro-cid-evheghju] .article-diagram__scope[data-astro-cid-evheghju]{color:var(--muted);margin:12px 0 0;font-size:17px;line-height:1.5}.article-diagram__sources[data-astro-cid-evheghju]{margin-top:10px;font-size:17px;line-height:1.5}.article-diagram__sources[data-astro-cid-evheghju]>p{margin:0}@container (width<=650px){.article-diagram__wide[data-astro-cid-evheghju]{display:none}.article-diagram__narrow[data-astro-cid-evheghju]{width:min(100%,350px);margin-inline:auto;display:block}.article-diagram__note--in-mobile[data-astro-cid-evheghju]{display:none}}@media (width<=600px){.article-diagram[data-astro-cid-evheghju]{margin:30px 0;padding-top:24px}.article-diagram[data-astro-cid-evheghju] .article-diagram__heading[data-astro-cid-evheghju]{margin-bottom:24px;font-size:25px}}@media print{.diagram-frame[data-astro-cid-evheghju]{break-inside:avoid}}