:root{--ground:#F2F5F4;--surface:#FFFFFF;--sunk:#E8EEEC;--ink:#10201E;--muted:#556864;--line:#D3DDDA;--accent:#0B7A75;--accent-strong:#075E5A;--accent-ink:#FFFFFF;--accent-soft:#D9EFEC;--fluid:#5FB8B1;--glass:#FBFDFC;--warn:#8F4406;--warn-soft:#FBEBD7;--ok-soft:#E3F3EF;--display:"Barlow Condensed","Arial Narrow","Roboto Condensed","Helvetica Neue",Arial,sans-serif;--body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--radius:10px;--max:1080px;--prose:68ch}@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){color-scheme:dark;--ground:#0C1413;--surface:#131E1C;--sunk:#0F1817;--ink:#E2EBE9;--muted:#93A6A2;--line:#26352F;--accent:#3FC1B6;--accent-strong:#6ED8CE;--accent-ink:#06201D;--accent-soft:#143A36;--fluid:#2B8C84;--glass:#182624;--warn:#F2B06B;--warn-soft:#3A2710;--ok-soft:#12302C}}:root[data-theme="dark"]{color-scheme:dark;--ground:#0C1413;--surface:#131E1C;--sunk:#0F1817;--ink:#E2EBE9;--muted:#93A6A2;--line:#26352F;--accent:#3FC1B6;--accent-strong:#6ED8CE;--accent-ink:#06201D;--accent-soft:#143A36;--fluid:#2B8C84;--glass:#182624;--warn:#F2B06B;--warn-soft:#3A2710;--ok-soft:#12302C}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6}img,svg{max-width:100%}a{color:var(--accent-strong);text-underline-offset:2px}a:hover{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--accent-ink);padding:8px 12px;z-index:10}.skip:focus{left:8px;top:8px}.container{max-width:var(--max);margin:0 auto;padding-inline:16px}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap;padding-block:8px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}.brand svg{width:34px;height:34px;flex:none}.brand-name{font-family:var(--display);font-size:24px;font-weight:600;letter-spacing:.01em;line-height:1}.brand-name b{font-weight:700;color:var(--accent)}.site-nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0;flex-wrap:wrap}.site-nav a{display:block;padding:6px 10px;border-radius:6px;text-decoration:none;color:var(--ink);font-weight:500;font-size:15px}.site-nav a:hover,.site-nav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent-strong)}.crumbs{font-size:14px;color:var(--muted);padding-block:14px 0}.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}.crumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}.crumbs a{color:var(--muted)}main{padding-block:8px 64px}.page-head{padding-block:18px 22px;max-width:var(--prose)}.eyebrow{font-family:var(--display);font-weight:600;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 6px}h1,h2,h3{font-family:var(--display);line-height:1.08;text-wrap:balance;letter-spacing:.005em}h1{font-size:clamp(34px,6vw,50px);font-weight:700;margin:0;text-transform:uppercase}h2{font-size:28px;font-weight:700;margin:40px 0 12px;text-transform:uppercase}h3{font-size:21px;font-weight:600;margin:24px 0 8px}.lede{font-size:18px;color:var(--muted);margin:12px 0 0}.meta-line{font-size:14px;color:var(--muted);margin-top:12px;display:flex;flex-wrap:wrap;gap:6px 16px}.meta-line span{display:inline-flex;gap:6px;align-items:center}.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}@media (min-width:960px){.layout.has-aside{grid-template-columns:minmax(0,1fr) 280px}}.aside-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.aside-box h2{font-size:18px;margin:0 0 8px}.aside-box ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.aside-box a{display:block;padding:6px 8px;border-radius:6px;text-decoration:none;font-size:15px}.aside-box a:hover{background:var(--accent-soft)}.aside-box a[aria-current="page"]{background:var(--accent-soft);font-weight:600}@media (min-width:960px){.aside{position:sticky;top:16px;align-self:start}}.prose{max-width:var(--prose)}.prose p,.prose li{font-size:17px}.prose ul,.prose ol{padding-left:22px}.prose li{margin:4px 0}.prose code,.formula{font-family:var(--mono);font-size:.92em;background:var(--sunk);border:1px solid var(--line);border-radius:5px;padding:1px 5px}.formula-block{font-family:var(--mono);font-size:15px;background:var(--sunk);border:1px solid var(--line);border-radius:8px;padding:14px 16px;overflow-x:auto;line-height:1.8}.callout{border-radius:8px;padding:14px 16px;background:var(--accent-soft);margin:18px 0}.callout.warn{background:var(--warn-soft);color:var(--warn)}.callout p{margin:0}.callout p+p{margin-top:8px}.sources{font-size:15px}.sources li{word-break:break-word}.tablebox{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--surface);margin:12px 0}table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;font-size:15px}th{font-family:var(--display);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:13px;color:var(--muted);text-align:left;padding:9px 12px;background:var(--sunk);border-bottom:1px solid var(--line);white-space:nowrap}td{padding:8px 12px;border-bottom:1px solid var(--line)}tr:last-child td{border-bottom:0}td.n,th.n{text-align:right;font-family:var(--mono)}tr.here td{background:var(--accent-soft);font-weight:600}td.over{color:var(--warn)}.faq{display:flex;flex-direction:column;gap:8px;max-width:var(--prose)}.faq details{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:0 16px}.faq summary{cursor:pointer;font-weight:600;padding:14px 0;list-style-position:outside}.faq details[open] summary{border-bottom:1px solid var(--line)}.faq details>div{padding:10px 0 14px}.faq details p{margin:6px 0}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin:16px 0}.card{display:flex;flex-direction:column;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--ink)}.card:hover{border-color:var(--accent)}.card strong{font-family:var(--display);font-size:20px;font-weight:600;color:var(--accent-strong);line-height:1.15}.card span{font-size:14px;color:var(--muted)}.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:22px}.calc .label,.calc label.label{font-family:var(--display);font-weight:600;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}.field{display:flex;flex-direction:column;gap:8px;min-width:0}.inrow{display:flex;align-items:stretch;border:1px solid var(--line);border-radius:8px;background:var(--sunk);overflow:hidden}.inrow:focus-within{outline:2px solid var(--accent);outline-offset:1px}.inrow input,.inrow select{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font-family:var(--mono);font-size:21px;font-weight:500;padding:9px 12px;outline:none}.inrow select{font-size:16px;font-family:var(--body)}.inrow input.name{font-family:var(--body);font-size:16px}.inrow .unit{display:flex;align-items:center;padding:0 12px;font-family:var(--mono);color:var(--muted);border-left:1px solid var(--line);white-space:nowrap}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip,.seg button,.btn{font-family:var(--mono);font-size:13px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:6px;padding:5px 9px;cursor:pointer;line-height:1.3}.chip:hover,.seg button:hover,.btn:hover{border-color:var(--accent)}.chip[aria-pressed="true"],.seg button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.btn{font-family:var(--body);font-size:14px;font-weight:500;padding:7px 12px}.seg{display:flex}.seg button{border-radius:0;flex:1;white-space:nowrap}.seg button:first-child{border-radius:6px 0 0 6px}.seg button:last-child{border-radius:0 6px 6px 0}.seg button+button{border-left:0}.inrow .seg{border-left:1px solid var(--line)}.inrow .seg button{border:0;border-radius:0;background:transparent;padding:0 12px}.inrow .seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}.hint{font-size:13px;color:var(--muted);margin:0}.result{display:flex;flex-direction:column;gap:14px;border-top:1px solid var(--line);padding-top:18px}.draw{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.big{font-family:var(--mono);font-size:clamp(46px,12vw,72px);font-weight:600;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}.big small{font-size:.36em;font-weight:500;color:var(--ink);margin-left:6px}.sub{font-family:var(--mono);color:var(--muted);font-size:16px}.syringe-box{overflow-x:auto}.syringe-box svg{display:block;width:100%;min-width:300px;height:auto}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}.stat{background:var(--surface);padding:12px 14px;display:flex;flex-direction:column;gap:2px;min-width:0}.stat .v{font-family:var(--mono);font-size:18px;font-weight:500;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.note{background:var(--warn-soft);color:var(--warn);border-radius:8px;padding:10px 12px;font-size:14px}.err{background:var(--warn-soft);color:var(--warn);border-radius:8px;padding:12px 14px;font-weight:500}.work{font-family:var(--mono);font-size:14px;background:var(--sunk);border:1px solid var(--line);border-radius:8px;padding:12px 14px;overflow-x:auto;display:flex;flex-direction:column;gap:8px}.work .f{color:var(--muted)}.work b{color:var(--accent-strong);font-weight:600}.work summary{cursor:pointer;font-family:var(--body);font-weight:600;color:var(--ink)}.blend-rows{display:flex;flex-direction:column;gap:8px}.blend-row{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) auto;gap:8px;align-items:center}.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:6px;width:36px;height:36px;cursor:pointer;font-size:18px;line-height:1}.icon-btn:hover{border-color:var(--warn);color:var(--warn)}.calc-foot{font-size:13px;color:var(--muted);display:flex;gap:6px 14px;flex-wrap:wrap}.site-footer{background:var(--surface);border-top:1px solid var(--line);padding-block:32px;font-size:15px}.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px}.site-footer h2{font-size:15px;letter-spacing:.08em;margin:0 0 8px;color:var(--muted)}.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.site-footer a{color:var(--ink);text-decoration:none}.site-footer a:hover{color:var(--accent)}.disclaimer{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;max-width:90ch}.disclaimer p{margin:6px 0}@media (prefers-reduced-motion:no-preference){.fillbar,.stopper,.rod{transition:all .25s ease}}@media print{.site-header,.site-footer,.aside,.chips{display:none}}@media (max-width:480px){.site-nav a{padding:6px 7px;font-size:14px}.site-header .container{gap:6px}}