.systems[data-astro-cid-cjmg5rex]{background:var(--ground)}.systems__frame[data-astro-cid-cjmg5rex]{padding-bottom:var(--chapter-pad);flex-direction:column;display:flex}.systems__head[data-astro-cid-cjmg5rex]{margin-inline:calc(-1 * var(--gutter));padding:var(--chapter-pad) var(--gutter) 44px;background:var(--teal);gap:16px;display:grid}.systems__head[data-astro-cid-cjmg5rex] .chapter-title[data-astro-cid-cjmg5rex]{margin-bottom:8px}.systems__plate[data-astro-cid-cjmg5rex]{margin:36px 0 0}.cutaway[data-astro-cid-cjmg5rex]{margin-top:16px;position:relative;container-type:inline-size}.cutaway__art[data-astro-cid-cjmg5rex]{width:100%;height:auto;display:block}.cutaway__ring[data-astro-cid-cjmg5rex]{--ring:clamp(1.5rem, 3.9cqw, 2.25rem);left:calc(var(--x) * 1%);top:calc(var(--y) * 1%);cursor:pointer;transition:background-color .2s var(--ease-out);position:absolute;translate:-50% -50%}.cutaway__ring[data-astro-cid-cjmg5rex]:hover,.cutaway__ring[data-astro-cid-cjmg5rex][data-hover]{background:color-mix(in oklab, var(--teal) 30%, var(--ground))}.cutaway__ring[data-astro-cid-cjmg5rex].is-chosen{background:var(--mark);color:var(--on-mark)}.cutaway__pen[data-astro-cid-cjmg5rex]{left:calc(var(--x) * 1%);top:calc(var(--y) * 1%);pointer-events:none;width:12%;height:auto;transition:left .7s var(--ease-out), top .7s var(--ease-out);position:absolute;translate:-50% -50%}@property --run{syntax:"<number>";inherits:false;initial-value:0}.cutaway__flow[data-astro-cid-cjmg5rex]{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.cutaway__flow[data-astro-cid-cjmg5rex] path[data-astro-cid-cjmg5rex]{--dash:90;fill:none;stroke:var(--teal-light);stroke-width:9px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:var(--dash) calc(var(--len) + var(--dash));stroke-dashoffset:calc(var(--dash) - var(--run) * (var(--len) + var(--dash)));opacity:0;filter:drop-shadow(0 0 4px color-mix(in oklab, var(--teal-light) 70%, transparent))}@container (width<=720px){.cutaway__flow[data-astro-cid-cjmg5rex] path[data-astro-cid-cjmg5rex]{--dash:150;stroke-width:18px}}@media (prefers-reduced-motion:no-preference){.cutaway__flow[data-astro-cid-cjmg5rex] path[data-astro-cid-cjmg5rex].is-running{animation:gas-run var(--t) cubic-bezier(.45, 0, .2, 1) both}.cutaway__pen[data-astro-cid-cjmg5rex]{mask-image:conic-gradient(from 210deg, #000 var(--sweep), #0000 0)}.cutaway__pen[data-astro-cid-cjmg5rex].is-drawing{animation:pen-draw .7s var(--ease-out) both}html.js .cutaway[data-astro-cid-cjmg5rex].is-waiting .cutaway__pen[data-astro-cid-cjmg5rex]{--sweep:0deg}}@keyframes gas-run{0%{--run:0;opacity:0}10%,85%{opacity:1}to{--run:1;opacity:0}}.key[data-astro-cid-cjmg5rex]{border-bottom:2px solid var(--ink);margin:28px 0 0;padding:0;list-style:none}.key[data-astro-cid-cjmg5rex] li[data-astro-cid-cjmg5rex]{border-top:1px solid var(--ink)}.key[data-astro-cid-cjmg5rex] li[data-astro-cid-cjmg5rex]:first-child{border-top-width:2px}.key__row[data-astro-cid-cjmg5rex]{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:0;align-items:flex-start;gap:14px;padding:11px 0;display:flex}.key__ring[data-astro-cid-cjmg5rex]{--ring:1.875rem;transition:background-color .2s var(--ease-out), color .2s var(--ease-out);background:0 0}.key__text[data-astro-cid-cjmg5rex]{gap:4px;padding-top:.28em;display:grid}.key__label[data-astro-cid-cjmg5rex]{font-family:var(--font-label);font-size:1.0625rem;font-weight:600;line-height:1.25}.key__more[data-astro-cid-cjmg5rex]{max-width:30em;font-size:1rem;line-height:1.45}html.js .key__row[data-astro-cid-cjmg5rex][aria-pressed=false] .key__more[data-astro-cid-cjmg5rex]{display:none}.key__row[data-astro-cid-cjmg5rex]:hover .key__label[data-astro-cid-cjmg5rex]{text-underline-offset:.2em;text-decoration:underline 2px}.key__row[data-astro-cid-cjmg5rex][aria-pressed=true] .key__ring[data-astro-cid-cjmg5rex]{background:var(--mark);color:var(--on-mark)}.key__row[data-astro-cid-cjmg5rex][aria-pressed=true] .key__label[data-astro-cid-cjmg5rex]{font-weight:800}.gas-code[data-astro-cid-cjmg5rex]{margin-top:44px}.gas-code__title[data-astro-cid-cjmg5rex]{font-family:var(--font-label);font-size:var(--fs-h3);letter-spacing:-.01em;font-weight:800}.gas-code[data-astro-cid-cjmg5rex] ul[data-astro-cid-cjmg5rex]{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px 24px;margin:16px 0 0;padding:0;list-style:none;display:grid}.gas-code[data-astro-cid-cjmg5rex] li[data-astro-cid-cjmg5rex]{grid-template-rows:auto auto 1fr;grid-template-columns:auto 1fr;gap:2px 12px;display:grid}.swatch[data-astro-cid-cjmg5rex]{border:1.5px solid var(--ink);border-radius:9px 9px 4px 4px;grid-row:1/span 3;width:18px;height:44px}.swatch--oxygen[data-astro-cid-cjmg5rex]{background:linear-gradient(#fff 0 32%,#111 32%)}.swatch--air[data-astro-cid-cjmg5rex]{background:linear-gradient(90deg,#111 0 50%,#fff 50%)}.swatch--vacuum[data-astro-cid-cjmg5rex]{background:#f2c40f}.swatch--n2o[data-astro-cid-cjmg5rex]{background:#2f68b4}.gas-code__gas[data-astro-cid-cjmg5rex]{font-family:var(--font-label);font-size:1.0625rem;font-weight:700;line-height:1.2}.gas-code__look[data-astro-cid-cjmg5rex]{color:var(--ink-soft);font-size:.9375rem;line-height:1.35}.gas-code__use[data-astro-cid-cjmg5rex]{margin-top:4px;font-size:.9375rem;line-height:1.4}.systems__link[data-astro-cid-cjmg5rex]{align-self:flex-start;margin-top:32px;font-size:1.125rem}@media (width>=640px) and (width<=1199.98px){.key[data-astro-cid-cjmg5rex]{columns:2;border-bottom:0;column-gap:32px}.key[data-astro-cid-cjmg5rex] li[data-astro-cid-cjmg5rex]{break-inside:avoid}.key[data-astro-cid-cjmg5rex] li[data-astro-cid-cjmg5rex]:first-child{border-top-width:1px}}@media (width>=1200px){.systems[data-astro-cid-cjmg5rex]{background:linear-gradient(90deg, var(--ground) calc(50% + 227 * var(--u)), var(--teal) 0)}.systems__frame[data-astro-cid-cjmg5rex]{grid-template-columns:calc(37 * var(--u)) calc(921 * var(--u)) calc(74 * var(--u)) calc(430 * var(--u)) 1fr;padding-block:var(--chapter-pad);grid-template-rows:auto auto 1fr auto;grid-template-areas:".plate.head."".plate.key."".code.key."".code.link.";display:grid}.systems__head[data-astro-cid-cjmg5rex]{gap:calc(18 * var(--u));background:0 0;grid-area:head;margin:0;padding:0}.systems__plate[data-astro-cid-cjmg5rex]{grid-area:plate;margin:0}.cutaway[data-astro-cid-cjmg5rex]{margin-top:calc(26 * var(--u))}.key[data-astro-cid-cjmg5rex]{margin-top:calc(40 * var(--u));grid-area:key;align-self:start}.key__row[data-astro-cid-cjmg5rex]{gap:calc(16 * var(--u));padding-block:calc(11 * var(--u))}.key__ring[data-astro-cid-cjmg5rex]{--ring:calc(32 * var(--u))}.key__label[data-astro-cid-cjmg5rex]{font-size:max(1rem, calc(19 * var(--u)))}.key__more[data-astro-cid-cjmg5rex]{font-size:max(1rem, calc(17 * var(--u)))}.gas-code[data-astro-cid-cjmg5rex]{margin-top:calc(40 * var(--u));grid-area:code}.gas-code[data-astro-cid-cjmg5rex] ul[data-astro-cid-cjmg5rex]{gap:calc(28 * var(--u));margin-top:calc(18 * var(--u));grid-template-columns:repeat(4,1fr)}.systems__link[data-astro-cid-cjmg5rex]{margin-top:calc(32 * var(--u));font-size:max(1.0625rem, calc(21 * var(--u)));grid-area:link;align-self:end}}.process[data-astro-cid-grsovck6]{background:var(--ground)}.process__side[data-astro-cid-grsovck6]{margin-inline:calc(-1 * var(--gutter));padding:var(--chapter-pad) var(--gutter) 44px;background:var(--teal);gap:16px;display:grid}.process__side[data-astro-cid-grsovck6] .chapter-title[data-astro-cid-grsovck6]{margin-bottom:8px}.index[data-astro-cid-grsovck6]{display:none}.steps[data-astro-cid-grsovck6]{margin:0;padding:0;list-style:none;position:relative}.steps[data-astro-cid-grsovck6]:before{content:"";background:var(--ink);width:1px;position:absolute;top:48px;bottom:48px;left:calc(1.125rem - .5px)}.step[data-astro-cid-grsovck6]{grid-template-columns:2.25rem 1fr minmax(84px,26%);align-items:start;column-gap:14px;padding-block:26px;scroll-margin-top:24px;display:grid;position:relative}.step[data-astro-cid-grsovck6]+.step[data-astro-cid-grsovck6]{border-top:1px dashed color-mix(in oklab, var(--ink) 45%, var(--ground))}.step__ring[data-astro-cid-grsovck6]{z-index:1;font-size:.875rem;position:relative}.step__ring[data-astro-cid-grsovck6]:after{content:"";aspect-ratio:1447/1155;background:var(--mark);width:220%;mask:var(--pen) center / contain no-repeat;opacity:0;position:absolute;top:50%;left:50%;translate:-50% -50%}.step[data-astro-cid-grsovck6].is-current .step__ring[data-astro-cid-grsovck6]:after{opacity:1}.step__art[data-astro-cid-grsovck6]{grid-area:1/3}.step__text[data-astro-cid-grsovck6]{grid-area:1/2;gap:6px;padding-top:4px;display:grid}.step__name[data-astro-cid-grsovck6]{font-family:var(--font-label);font-size:var(--fs-h3);font-weight:800;line-height:1.1}.step__n[data-astro-cid-grsovck6]{display:none}.step__text[data-astro-cid-grsovck6] p[data-astro-cid-grsovck6]{text-wrap:pretty;max-width:30em;line-height:1.5}.process__start[data-astro-cid-grsovck6]{padding:28px 0 var(--chapter-pad);border-top:2px solid var(--ink);justify-items:start;gap:16px;margin-top:12px;display:grid}.process__start[data-astro-cid-grsovck6] p[data-astro-cid-grsovck6]{max-width:32em;font-size:var(--fs-lede);line-height:1.5}@media (width>=1200px){.process[data-astro-cid-grsovck6]{background:linear-gradient(90deg, var(--teal) calc(50% - 227 * var(--u)), var(--ground) 0)}.process__frame[data-astro-cid-grsovck6]{grid-template-columns:calc(541 * var(--u)) calc(950 * var(--u)) 1fr;display:grid}.process__side[data-astro-cid-grsovck6]{align-self:start;gap:calc(18 * var(--u));padding:var(--chapter-pad) calc(36 * var(--u)) var(--chapter-pad) calc(37 * var(--u));background:0 0;margin:0;position:sticky;top:0}.index[data-astro-cid-grsovck6]{margin-top:calc(28 * var(--u));display:block;position:relative}.index[data-astro-cid-grsovck6] ol[data-astro-cid-grsovck6]{border-bottom:2px solid var(--ink);margin:0;padding:0;list-style:none}.index[data-astro-cid-grsovck6] li[data-astro-cid-grsovck6]{height:calc(58 * var(--u));border-top:1px solid var(--ink)}.index[data-astro-cid-grsovck6] li[data-astro-cid-grsovck6]:first-child{border-top-width:2px}.index[data-astro-cid-grsovck6] a[data-astro-cid-grsovck6]{align-items:center;gap:calc(18 * var(--u));height:100%;color:var(--ink);font-family:var(--font-label);font-size:calc(26 * var(--u));font-weight:700;text-decoration:none;display:flex}.index__ring[data-astro-cid-grsovck6]{--ring:calc(38 * var(--u));font-size:calc(17 * var(--u));background:0 0}.index[data-astro-cid-grsovck6] a[data-astro-cid-grsovck6]:hover .index__name[data-astro-cid-grsovck6]{text-decoration:underline 2px}.index[data-astro-cid-grsovck6] a[data-astro-cid-grsovck6][aria-current] .index__name[data-astro-cid-grsovck6]{font-weight:800}.index__marker[data-astro-cid-grsovck6]{left:calc(19 * var(--u));top:calc((var(--i) * 58 + 29) * var(--u));width:calc(74 * var(--u));aspect-ratio:1447/1155;background:var(--ink);mask:var(--pen) center / contain no-repeat;pointer-events:none;position:absolute;translate:-50% -50%}.process__body[data-astro-cid-grsovck6]{padding:var(--chapter-pad) 0 0 calc(27 * var(--u))}.steps[data-astro-cid-grsovck6]:before{display:none}.step[data-astro-cid-grsovck6]{grid-template-columns:calc(250 * var(--u)) 1fr;column-gap:calc(48 * var(--u));padding-block:calc(26 * var(--u));scroll-margin-top:calc(40 * var(--u));align-items:center}.step[data-astro-cid-grsovck6]:first-child{padding-top:0}.step__ring[data-astro-cid-grsovck6]{display:none}.step__art[data-astro-cid-grsovck6]{grid-column:1}.step__text[data-astro-cid-grsovck6]{gap:calc(10 * var(--u));grid-column:2;padding:0}.step__name[data-astro-cid-grsovck6]{font-size:calc(34 * var(--u))}.step__n[data-astro-cid-grsovck6]{color:var(--teal-ink);margin-right:.25em;display:inline}.step__text[data-astro-cid-grsovck6] p[data-astro-cid-grsovck6]{font-size:max(1.0625rem, calc(19 * var(--u)))}.process__start[data-astro-cid-grsovck6]{gap:calc(20 * var(--u));margin-top:calc(10 * var(--u));padding:calc(32 * var(--u)) 0 var(--chapter-pad)}}@media (prefers-reduced-motion:no-preference){.step__ring[data-astro-cid-grsovck6]:after,.index__marker[data-astro-cid-grsovck6]{mask:var(--pen) center / contain no-repeat, conic-gradient(from 210deg, #000 var(--sweep), #0000 0);mask-composite:intersect}.step[data-astro-cid-grsovck6].is-current .step__ring[data-astro-cid-grsovck6]:after,.index__marker[data-astro-cid-grsovck6].is-drawing{animation:pen-draw .7s var(--ease-out) both}}