.field[data-astro-cid-5mf2nbxw]{flex-direction:column;gap:6px;display:flex}label[data-astro-cid-5mf2nbxw]{color:var(--grey-900);font-size:13px;font-weight:600}.field-row[data-astro-cid-5mf2nbxw]{gap:8px;display:flex}input[data-astro-cid-5mf2nbxw][type=text]{border:1px solid var(--grey-200);border-radius:var(--radius);min-width:0;color:var(--grey-900);background:var(--white);flex:1;padding:11px 14px;font-family:inherit;font-size:15px}input[data-astro-cid-5mf2nbxw][type=text]:focus{border-color:var(--blue);outline:2px solid var(--blue-mid);outline-offset:-1px}input[data-astro-cid-5mf2nbxw][data-invalid=true]{border-color:var(--red)}.field-hint[data-astro-cid-5mf2nbxw]{color:var(--grey-400);font-size:12px}.field-error[data-astro-cid-5mf2nbxw]{color:var(--red);min-height:1em;font-size:12.5px}.unit-select[data-astro-cid-aibxtfos]{border:1px solid var(--grey-200);border-radius:var(--radius);width:88px;color:var(--grey-900);background:var(--white);flex-shrink:0;padding:11px 10px;font-family:inherit;font-size:14px}.unit-select[data-astro-cid-aibxtfos]:focus{border-color:var(--blue);outline:2px solid var(--blue-mid);outline-offset:-1px}.result-panel[data-astro-cid-dpwapt7a]{background:var(--grey-50);border:1px solid var(--grey-200);border-radius:var(--radius-lg);top:calc(var(--header-height) + 16px);padding:24px;position:sticky}.result-kicker[data-astro-cid-dpwapt7a]{text-transform:uppercase;letter-spacing:.06em;color:var(--grey-400);margin-bottom:14px;font-size:11px;font-weight:700}.rp-idle[data-astro-cid-dpwapt7a],.rp-invalid[data-astro-cid-dpwapt7a],.rp-valid[data-astro-cid-dpwapt7a]{display:none}.result-panel[data-astro-cid-dpwapt7a][data-state=idle] .rp-idle[data-astro-cid-dpwapt7a],.result-panel[data-astro-cid-dpwapt7a][data-state=invalid] .rp-invalid[data-astro-cid-dpwapt7a],.result-panel[data-astro-cid-dpwapt7a][data-state=valid] .rp-valid[data-astro-cid-dpwapt7a]{display:block}.rp-idle[data-astro-cid-dpwapt7a]{color:var(--grey-400);font-size:14px;line-height:1.5}.rp-invalid[data-astro-cid-dpwapt7a] p[data-astro-cid-dpwapt7a]{color:var(--red);font-size:14px;line-height:1.5}.rp-big[data-astro-cid-dpwapt7a]{font-family:var(--font-disp);color:var(--grey-900);margin-bottom:6px;font-size:2rem}.rp-note[data-astro-cid-dpwapt7a]{color:var(--grey-400);font-size:13px;line-height:1.5}.pa-diagram[data-astro-cid-2g4czdr2]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius-lg);margin:16px 0;padding:28px}.pa-diagram[data-astro-cid-2g4czdr2] svg[data-astro-cid-2g4czdr2]{width:100%;max-width:640px;height:auto;margin:0 auto;display:block}.pa-diagram[data-astro-cid-2g4czdr2] figcaption[data-astro-cid-2g4czdr2]{color:var(--grey-800);text-align:center;max-width:620px;margin-top:18px;margin-left:auto;margin-right:auto;font-size:14.5px;line-height:1.65}.sl-diagram[data-astro-cid-rr7dkz7p]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius-lg);margin:16px 0;padding:20px}.sl-diagram[data-astro-cid-rr7dkz7p] svg[data-astro-cid-rr7dkz7p]{width:100%;max-width:420px;height:auto;margin:0 auto;display:block}.sl-diagram[data-astro-cid-rr7dkz7p] figcaption[data-astro-cid-rr7dkz7p]{color:var(--grey-800);max-width:560px;margin-top:14px;font-size:13px;line-height:1.6}.video-block[data-astro-cid-mq5kdlc7]{border-top:1px solid var(--grey-200);padding:28px 0}.video-block[data-astro-cid-mq5kdlc7] h2[data-astro-cid-mq5kdlc7]{font-family:var(--font-disp);color:var(--grey-900);margin-bottom:14px;font-size:1.3rem}.video-frame[data-astro-cid-mq5kdlc7]{aspect-ratio:16/9;background:var(--grey-900);border-radius:var(--radius-lg);flex-direction:column;justify-content:center;align-items:center;gap:10px;max-width:680px;display:flex}.video-frame[data-astro-cid-mq5kdlc7] svg[data-astro-cid-mq5kdlc7]{fill:#ffffff59;width:56px;height:56px}.video-frame[data-astro-cid-mq5kdlc7] p[data-astro-cid-mq5kdlc7]{color:#fff9;letter-spacing:.02em;font-size:13px;font-weight:600}.video-note[data-astro-cid-mq5kdlc7]{color:var(--grey-400);max-width:560px;margin-top:14px;font-size:13px;line-height:1.6}.video-note[data-astro-cid-mq5kdlc7] code[data-astro-cid-mq5kdlc7]{background:var(--grey-100);border-radius:4px;padding:.1em .4em;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em}.force-chart-wrap[data-astro-cid-n4ul6nll]{border-top:1px solid var(--grey-200);margin-top:20px;padding-top:18px}.force-chart-label[data-astro-cid-n4ul6nll]{color:var(--grey-400);margin-bottom:8px;font-size:12px}.force-chart[data-astro-cid-n4ul6nll]{width:100%;height:auto;display:block}.force-chart-note[data-astro-cid-n4ul6nll]{color:var(--grey-400);margin-top:8px;font-size:12px;line-height:1.5}.pg-diagram[data-astro-cid-xm2exahc]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius-lg);margin:16px 0;padding:24px}.pg-diagram[data-astro-cid-xm2exahc] svg[data-astro-cid-xm2exahc]{width:100%;max-width:480px;height:auto;margin:0 auto;display:block}.pg-diagram[data-astro-cid-xm2exahc] figcaption[data-astro-cid-xm2exahc]{color:var(--grey-800);text-align:center;max-width:540px;margin-top:14px;margin-left:auto;margin-right:auto;font-size:13.5px;line-height:1.6}.section-h2[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--grey-900);margin:32px 0 4px;font-size:1.3rem}.field[data-astro-cid-zvnxg5dj]{flex-direction:column;gap:6px;display:flex}.field[data-astro-cid-zvnxg5dj] label[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:13px;font-weight:600}.field[data-astro-cid-zvnxg5dj] select[data-astro-cid-zvnxg5dj]{border:1px solid var(--grey-200);border-radius:var(--radius);color:var(--grey-900);background:var(--white);padding:11px 14px;font-family:inherit;font-size:15px}.field[data-astro-cid-zvnxg5dj] select[data-astro-cid-zvnxg5dj]:focus{border-color:var(--blue);outline:2px solid var(--blue-mid);outline-offset:-1px}.field-hint[data-astro-cid-zvnxg5dj]{color:var(--grey-400);font-size:12px}.field-note[data-astro-cid-zvnxg5dj]{color:var(--grey-400);font-size:12.5px;line-height:1.5}.field-pair[data-astro-cid-zvnxg5dj]{grid-template-columns:1fr 1fr;gap:14px;display:grid}.tier-picker[data-astro-cid-zvnxg5dj]{background:var(--sky-light);border:1px solid var(--sky);border-radius:var(--radius-lg);padding:18px}.tier-picker[data-astro-cid-zvnxg5dj] h3[data-astro-cid-zvnxg5dj]{color:var(--grey-900);margin-bottom:12px;font-size:.95rem;font-weight:700}.tier-options[data-astro-cid-zvnxg5dj]{flex-direction:column;gap:8px;display:flex}.tier-option[data-astro-cid-zvnxg5dj]{background:var(--white);border:1.5px solid var(--grey-200);border-radius:var(--radius);cursor:pointer;transition:border-color var(--trans);align-items:flex-start;gap:10px;padding:11px 14px;display:flex}.tier-option[data-astro-cid-zvnxg5dj]:has(input:checked){border-color:var(--sky-dark);background:var(--white);box-shadow:0 0 0 1px var(--sky-dark) inset}.tier-option[data-astro-cid-zvnxg5dj] input[data-astro-cid-zvnxg5dj]{accent-color:var(--sky-dark);flex-shrink:0;margin-top:3px}.tier-option-body[data-astro-cid-zvnxg5dj]{flex-direction:column;gap:1px;display:flex}.tier-option-title[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:13.5px;font-weight:700}.tier-option-sub[data-astro-cid-zvnxg5dj]{color:var(--grey-400);font-size:12px}.tier-desc[data-astro-cid-zvnxg5dj]{color:var(--grey-800);margin-top:12px;font-size:13px;line-height:1.55}@media (width>=560px){.tier-options[data-astro-cid-zvnxg5dj]{flex-flow:wrap}.tier-option[data-astro-cid-zvnxg5dj]{flex:45%}}@media (width>=900px){.tier-option[data-astro-cid-zvnxg5dj]{flex:1 1 0}}.breakdown[data-astro-cid-zvnxg5dj]{background:var(--grey-50);border:1px solid var(--grey-200);border-radius:var(--radius-lg);flex-direction:column;gap:16px;padding:20px;display:flex}.breakdown[data-astro-cid-zvnxg5dj] h3[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:.95rem;font-weight:700}.breakdown-intro[data-astro-cid-zvnxg5dj]{color:var(--grey-400);margin-top:-10px;font-size:12.5px;line-height:1.5}.shape-picker[data-astro-cid-zvnxg5dj]{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.shape-btn[data-astro-cid-zvnxg5dj]{background:var(--white);border:1.5px solid var(--grey-200);border-radius:var(--radius);color:var(--grey-400);cursor:pointer;transition:border-color var(--trans), color var(--trans), background var(--trans);flex-direction:column;align-items:center;gap:6px;padding:14px 8px;font-size:12.5px;font-weight:600;display:flex}.shape-btn[data-astro-cid-zvnxg5dj]:hover{border-color:var(--sky)}.shape-btn[data-astro-cid-zvnxg5dj][aria-pressed=true]{border-color:var(--sky-dark);background:var(--sky-light);color:var(--sky-dark)}@media (width>=480px){.shape-picker[data-astro-cid-zvnxg5dj]{grid-template-columns:repeat(4,1fr)}}.computed-note[data-astro-cid-zvnxg5dj]{color:var(--grey-800);font-size:13px}.computed-note[data-astro-cid-zvnxg5dj] strong[data-astro-cid-zvnxg5dj]{color:var(--blue)}.flow-ratio-section[data-astro-cid-zvnxg5dj]{background:var(--grey-50);border:1px solid var(--grey-200);border-radius:var(--radius-lg);flex-direction:column;gap:14px;padding:18px;display:flex}.flow-ratio-section[data-astro-cid-zvnxg5dj] h3[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:.95rem;font-weight:700}.flow-ratio-intro[data-astro-cid-zvnxg5dj]{color:var(--grey-400);margin-top:-8px;font-size:12.5px;line-height:1.5}.pythagoras-helper[data-astro-cid-zvnxg5dj]{border:1px dashed var(--grey-200);border-radius:var(--radius);padding:10px 12px}.pythagoras-helper[data-astro-cid-zvnxg5dj] summary[data-astro-cid-zvnxg5dj]{color:var(--blue);cursor:pointer;font-size:12.5px;font-weight:600}.pythagoras-helper[data-astro-cid-zvnxg5dj] .field-pair[data-astro-cid-zvnxg5dj]{margin-top:10px}.flow-ratio-output[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--blue);font-size:1.05rem}.flow-ratio-result[data-astro-cid-zvnxg5dj]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius);padding:14px}.flow-ratio-result-label[data-astro-cid-zvnxg5dj]{text-transform:uppercase;letter-spacing:.05em;color:var(--grey-400);margin-top:8px;font-size:11px;font-weight:700}.flow-ratio-result-label[data-astro-cid-zvnxg5dj]:first-child{margin-top:0}.flow-ratio-result-value[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:14px;font-weight:600}.machine-bracket[data-astro-cid-zvnxg5dj]{border-top:1px solid var(--grey-200);margin-top:18px;padding-top:16px}.machine-bracket-label[data-astro-cid-zvnxg5dj]{text-transform:uppercase;letter-spacing:.05em;color:var(--grey-400);margin-bottom:6px;font-size:11px;font-weight:700}.machine-bracket-value[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--white);background:var(--sky-dark);border-radius:var(--radius);padding:4px 14px;font-size:1.3rem;display:inline-block}.machine-bracket-note[data-astro-cid-zvnxg5dj]{color:var(--grey-400);margin-top:6px;font-size:12.5px;line-height:1.5}.static-unit[data-astro-cid-zvnxg5dj]{width:40px;color:var(--grey-400);flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-weight:600;display:flex}.pressure-slider-wrap[data-astro-cid-zvnxg5dj]{flex-direction:column;gap:6px;margin-top:2px;display:flex}.result-panel[data-astro-cid-zvnxg5dj] .pressure-slider-wrap[data-astro-cid-zvnxg5dj]{border-top:1px solid var(--grey-200);margin-top:18px;padding-top:16px}.pressure-slider-wrap[data-astro-cid-zvnxg5dj] input[data-astro-cid-zvnxg5dj][type=range]{width:100%;accent-color:var(--sky-dark);cursor:pointer}.pressure-slider-ticks[data-astro-cid-zvnxg5dj]{color:var(--grey-400);justify-content:space-between;font-size:11px;display:flex}.chart-with-vertical-slider[data-astro-cid-zvnxg5dj]{align-items:stretch;gap:10px;display:flex}.vertical-pressure-slider-wrap[data-astro-cid-zvnxg5dj]{flex-direction:column;flex-shrink:0;align-items:center;gap:8px;width:64px;padding:8px 0;display:flex}.vertical-pressure-slider-wrap[data-astro-cid-zvnxg5dj] .field-label-text[data-astro-cid-zvnxg5dj]{text-align:center;font-size:11px;line-height:1.3}.vertical-pressure-slider-wrap[data-astro-cid-zvnxg5dj] input[data-astro-cid-zvnxg5dj][type=range]{writing-mode:vertical-lr;width:24px;accent-color:var(--sky-dark);cursor:pointer;direction:rtl;flex:auto}.vertical-pressure-slider-wrap[data-astro-cid-zvnxg5dj] [data-astro-cid-zvnxg5dj][data-average-pressure-value]{color:var(--grey-400);margin:0;font-size:11px}.average-pressure-reset[data-astro-cid-zvnxg5dj]{border:1px solid var(--grey-200);border-radius:var(--radius);color:var(--sky-dark);cursor:pointer;background:0 0;padding:4px 8px;font-size:10.5px}.average-pressure-reset[data-astro-cid-zvnxg5dj]:hover{background:var(--sky-light)}.pressure-slider-wrap[data-astro-cid-zvnxg5dj] input[data-astro-cid-zvnxg5dj][type=range]:disabled,.machine-sliders[data-astro-cid-zvnxg5dj] .pressure-slider-wrap[data-astro-cid-zvnxg5dj]:has(input:disabled){opacity:.45}.pressure-slider-wrap[data-astro-cid-zvnxg5dj] input[data-astro-cid-zvnxg5dj][type=range]:disabled{cursor:not-allowed}.machine-sliders[data-astro-cid-zvnxg5dj]{background:var(--grey-50);border:1px solid var(--grey-200);border-radius:var(--radius-lg);flex-direction:column;gap:16px;padding:18px;display:flex}.machine-sliders[data-astro-cid-zvnxg5dj] h3[data-astro-cid-zvnxg5dj]{color:var(--grey-900);font-size:.95rem;font-weight:700}.machine-sliders-intro[data-astro-cid-zvnxg5dj]{color:var(--grey-400);margin-top:-8px;font-size:12.5px;line-height:1.5}.machine-sliders[data-astro-cid-zvnxg5dj] .pressure-slider-wrap[data-astro-cid-zvnxg5dj]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius);margin-top:0;padding:12px 14px}.machine-average[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--blue);font-size:1.05rem}.shape-live[data-astro-cid-zvnxg5dj]{flex-direction:column;gap:10px;display:flex}.shape-svg[data-astro-cid-zvnxg5dj]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius);width:100%;max-width:220px;height:auto;margin:0 auto}.field-icon-row[data-astro-cid-zvnxg5dj]{align-items:flex-start;gap:12px;display:flex}.field-icon-row[data-astro-cid-zvnxg5dj]>.field[data-astro-cid-zvnxg5dj],.field-icon-row[data-astro-cid-zvnxg5dj]>div[data-astro-cid-zvnxg5dj]>.field[data-astro-cid-zvnxg5dj]{flex:1}.field-icon-content[data-astro-cid-zvnxg5dj]{flex-direction:column;flex:1;gap:6px;display:flex}.field-icon[data-astro-cid-zvnxg5dj]{border-radius:var(--radius);background:var(--sky-light);width:36px;height:36px;color:var(--sky-dark);flex-shrink:0;justify-content:center;align-items:center;margin-top:20px;display:flex}.maths-breakdown[data-astro-cid-zvnxg5dj]{background:var(--white);border:1px solid var(--grey-200);border-radius:var(--radius);padding:16px}.maths-total[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--blue);margin-bottom:8px;font-size:1.15rem}.maths-steps[data-astro-cid-zvnxg5dj]{color:var(--grey-400);white-space:pre-line;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;line-height:1.7}.major-section[data-astro-cid-zvnxg5dj]{border-top:3px solid var(--sky);margin-top:48px;padding-top:40px}.major-section[data-astro-cid-zvnxg5dj] h2[data-astro-cid-zvnxg5dj]{font-family:var(--font-disp);color:var(--grey-900);margin-bottom:12px;font-size:1.6rem}.major-section-intro[data-astro-cid-zvnxg5dj]{color:var(--grey-800);max-width:680px;margin-bottom:20px;font-size:1rem;line-height:1.6}