/* Chem Reset : flowsheet edition. Petrol ink on paper, sand for live state.
   Archivo (title block) / Source Serif 4 (text) / IBM Plex Mono (tags, data) */
:root{
  --ink:#0F2B3C; --ink-2:#1A3A4E; --ink-3:#2C4B60;
  --paper:#F3F1EA; --paper-2:#ECE9DF; --paper-3:#E3DFD2;
  --mist:#5F7385; --mist-2:#8A99A6; --rule:#C9C4B4; --rule-2:#A9B8C4;
  --sand:#C8B48A; --sand-deep:#8A7345; --sand-pale:#EADFC4;
  --display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --body:"Source Serif 4",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --max:1180px; --gutter:clamp(18px,3.5vw,44px); --frame:clamp(10px,2vw,26px);
}
*{box-sizing:border-box}
html{color-scheme:light;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;font-variant-numeric:tabular-nums;
  background-image:linear-gradient(var(--paper-3) 1px,transparent 1px),linear-gradient(90deg,var(--paper-3) 1px,transparent 1px);
  background-size:40px 40px;background-position:center top}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--sand-deep)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:var(--display);font-stretch:110%;font-weight:700;line-height:1.05;letter-spacing:-.01em;margin:0;text-wrap:balance}
h1{font-size:clamp(34px,5vw,62px)}
h2{font-size:clamp(26px,3.2vw,40px)}
h3{font-size:22px}
h4{font-size:14px;font-family:var(--mono);font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:var(--mist)}
p{margin:0 0 1em}
.mono{font-family:var(--mono);font-size:13px;letter-spacing:.02em}
.tag{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 12px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--sand-deep);outline-offset:3px}

/* ---------- drawing sheet ---------- */
.sheet{max-width:var(--max);margin:var(--frame) auto;background:var(--paper);border:1.5px solid var(--ink);position:relative}
.sheet::before{content:"";position:absolute;inset:6px;border:.5px solid var(--ink);pointer-events:none}
.coords{position:absolute;font-family:var(--mono);font-size:10px;color:var(--mist);pointer-events:none;display:flex;justify-content:space-around;user-select:none}
.coords.x{left:0;right:0;top:-1px;height:6px;align-items:center;transform:translateY(-100%);padding:0 10%}
.coords.y{top:0;bottom:0;left:-1px;width:6px;flex-direction:column;transform:translateX(-100%);padding:10% 0}
.coords.y span{transform:translateX(-11px)}
.coords.x span{transform:translateY(-8px)}
@media(max-width:720px){.coords{display:none}.sheet{margin:8px}}

/* header */
header.site{display:flex;align-items:stretch;border-bottom:1.5px solid var(--ink);margin:6px;padding:0}
header.site .brand{display:flex;align-items:center;gap:12px;padding:14px 18px;border-right:1.5px solid var(--ink);text-decoration:none;color:var(--ink)}
.brand .sym{width:30px;height:30px;color:var(--ink)}
.brand .word{font-family:var(--display);font-stretch:110%;font-weight:700;font-size:14px;line-height:1;letter-spacing:.06em;text-transform:uppercase}
nav.primary{display:flex;flex:1;align-items:stretch}
nav.primary a{display:flex;flex-direction:column;justify-content:center;padding:10px 18px;border-right:.5px solid var(--ink);text-decoration:none;font-family:var(--display);font-size:15px;font-weight:500}
nav.primary a small{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--mist);text-transform:uppercase}
nav.primary a[aria-current]{background:var(--ink);color:var(--paper)}
nav.primary a[aria-current] small{color:var(--sand)}
nav.primary a.cta{margin-left:auto;border-right:0;border-left:1.5px solid var(--ink);background:var(--sand-pale)}
.menu-btn{display:none;margin-left:auto;background:none;border:0;border-left:1.5px solid var(--ink);font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;padding:0 18px;cursor:pointer;color:var(--ink)}
@media(max-width:860px){
  .menu-btn{display:block}
  nav.primary{display:none;position:absolute;left:6px;right:6px;top:60px;background:var(--paper);border:1.5px solid var(--ink);flex-direction:column;z-index:20}
  nav.primary.open{display:flex}
  nav.primary a{border-right:0;border-bottom:.5px solid var(--ink);padding:14px 18px}
  nav.primary a.cta{margin-left:0;border-left:0}
}

/* sections */
section{padding:clamp(40px,6vw,80px) var(--gutter);border-bottom:.5px solid var(--ink);position:relative}
section:last-of-type{border-bottom:0}
section.dark{background:var(--ink);color:var(--paper)}
section.dark h4,section.dark .tag{color:var(--rule-2)}
section.dark a:hover{color:var(--sand)}
.wrap{max-width:1040px;margin:0 auto}
.secmark{position:absolute;top:12px;left:var(--gutter);font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist)}
section.dark .secmark{color:var(--rule-2)}
.lede{font-size:clamp(18px,1.6vw,21px);line-height:1.5;max-width:62ch}
.small{font-size:14px;color:var(--mist)}
section.dark .small{color:var(--rule-2)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
@media(max-width:760px){.two{grid-template-columns:1fr}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;font-family:var(--display);font-weight:600;font-size:15px;text-decoration:none;border:1.5px solid var(--ink);color:var(--ink);background:transparent}
.btn .sym{width:16px;height:16px}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-sand{background:var(--sand);border-color:var(--sand);color:var(--ink)}
.btn:hover{color:var(--ink);background:var(--sand-pale)}
.btn-ink:hover{background:var(--ink-3);color:var(--paper)}
section.dark .btn{border-color:var(--paper);color:var(--paper)}
section.dark .btn:hover{background:var(--ink-2);color:var(--paper)}
section.dark .btn-sand{background:var(--sand);border-color:var(--sand);color:var(--ink)}
section.dark .btn-sand:hover{background:var(--sand-pale);color:var(--ink)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* hero */
.hero{padding-top:clamp(44px,6vw,72px)}
.hero .wrap{display:block}
.hero .drawing{margin-top:clamp(36px,5vw,64px);border-top:.5px solid var(--ink);padding-top:28px}
.hero h1{margin:10px 0 22px}
.hero .lede{margin-bottom:0}
.locs{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--mist);margin-top:26px}

/* flowsheet drawing */
.flow{width:100%;height:auto;display:block;font-family:var(--mono)}
.flow text{fill:var(--ink);font-size:11px;letter-spacing:.06em}
.flow .lbl{font-size:12.5px;font-weight:500}
.flow .sub{fill:var(--mist);font-size:10.5px}
.flow .num{fill:var(--sand-deep);font-weight:500}
.flow .eq{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}
.flow .ln{fill:none;stroke:var(--ink);stroke-width:1.5}
.flow .stream{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-dasharray:6 5;animation:flow 1.6s linear infinite}
.flow .stream.slow{animation-duration:2.6s}
.flow .hl{stroke:var(--sand-deep)}
.flow .arrow{fill:var(--ink)}
.flow a{cursor:pointer}
.flow a:hover .eq{fill:var(--sand-pale)}
.flow a:focus-visible .eq{stroke:var(--sand-deep);stroke-width:2.5}
@keyframes flow{to{stroke-dashoffset:-22}}
@media(prefers-reduced-motion:reduce){.flow .stream{animation:none}}
.flow-cap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist);text-transform:uppercase;margin-top:6px}

/* stream table / data tables */
table{width:100%;border-collapse:collapse;font-size:15px}
.tblwrap{overflow-x:auto}
th,td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:.5px solid var(--rule)}
th{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist);font-weight:500;border-bottom:1.5px solid var(--ink)}
td.mono,th.mono{font-family:var(--mono);font-size:13px}
td.num{text-align:right;font-family:var(--mono);font-size:13px;white-space:nowrap}
th.num{text-align:right}
td.big{font-family:var(--display);font-stretch:110%;font-weight:700;font-size:clamp(24px,2.6vw,34px);line-height:1;white-space:nowrap}
section.dark th,section.dark td{border-color:var(--ink-3)}
section.dark th{border-bottom-color:var(--paper);color:var(--rule-2)}
tr:last-child td{border-bottom:0}
table.streams td:first-child{width:56px;color:var(--sand-deep)}
section.dark table.streams td:first-child{color:var(--sand)}

/* equipment list (practices) */
.eqlist{border:1.5px solid var(--ink)}
.eqrow{display:grid;grid-template-columns:90px minmax(0,1.2fr) minmax(0,1.6fr) 120px;gap:18px;padding:18px 20px;border-bottom:.5px solid var(--ink);text-decoration:none;color:inherit;align-items:start}
.eqrow:last-child{border-bottom:0}
.eqrow:hover{background:var(--sand-pale)}
.eqrow .tg{font-family:var(--mono);font-size:13px;color:var(--sand-deep);letter-spacing:.06em}
.eqrow h3{font-size:19px;margin-bottom:6px}
.eqrow .svc{font-size:15px;color:var(--mist);margin:0}
.eqrow .duty{font-size:15px;margin:0}
.eqrow .go{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-align:right;color:var(--mist)}
.eqhead{display:grid;grid-template-columns:90px minmax(0,1.2fr) minmax(0,1.6fr) 120px;gap:18px;padding:10px 20px;border-bottom:1.5px solid var(--ink);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
@media(max-width:760px){.eqrow,.eqhead{grid-template-columns:70px 1fr}.eqhead span:nth-child(n+3),.eqrow .go{display:none}.eqrow .duty{grid-column:2}}

/* notes block */
.notes{border:1.5px solid currentColor;padding:18px 22px;font-size:15px}
.notes h4{margin:0 0 10px}
.notes ol{margin:0;padding-left:22px}
.notes li{margin-bottom:8px}
.notes li::marker{font-family:var(--mono);font-size:12px}

/* founder */
.founder{display:grid;grid-template-columns:minmax(220px,2fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:start}
.founder figure{margin:0;border:1.5px solid var(--ink);padding:8px;background:var(--paper)}
.founder img{width:100%;height:auto;filter:grayscale(.15)}
.founder figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--mist);margin-top:8px;display:flex;justify-content:space-between}
@media(max-width:760px){.founder{grid-template-columns:1fr}.founder figure{max-width:320px}}

/* title block (footer) */
footer.site{margin:6px;border-top:1.5px solid var(--ink)}
.tblock{display:grid;grid-template-columns:2fr 1.2fr 1.2fr 1.4fr;border-bottom:.5px solid var(--ink)}
.tblock>div{padding:14px 18px;border-right:.5px solid var(--ink);font-size:14px}
.tblock>div:last-child{border-right:0}
.tblock h4{margin:0 0 8px}
.tblock ul{list-style:none;margin:0;padding:0}
.tblock li{margin-bottom:4px}
.tblock address{font-style:normal;line-height:1.5}
.tblock .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;margin-bottom:10px}
.tblock .brand .word{font-size:12px}
.tbstrip{display:grid;grid-template-columns:repeat(5,1fr);font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--mist)}
.tbstrip>div{padding:10px 18px;border-right:.5px solid var(--ink)}
.tbstrip>div:last-child{border-right:0}
.tbstrip b{display:block;color:var(--ink);font-weight:500;margin-top:2px;text-transform:none;letter-spacing:.02em}
@media(max-width:860px){.tblock{grid-template-columns:1fr 1fr}.tblock>div:nth-child(2){border-right:0}.tblock>div:nth-child(-n+2){border-bottom:.5px solid var(--ink)}.tbstrip{grid-template-columns:1fr 1fr 1fr}.tbstrip>div:nth-child(n+4){border-top:.5px solid var(--ink)}}

/* page head */
.page-head h1{margin:8px 0 18px}

/* deal map */
.mapframe{border:1.5px solid var(--ink);background:var(--paper)}
.mapbar{display:flex;flex-wrap:wrap;gap:0;border-bottom:1.5px solid var(--ink);align-items:stretch}
.mapbar .lab{padding:12px 16px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist);border-right:.5px solid var(--ink);display:flex;align-items:center}
.mapbar button{background:none;border:0;border-right:.5px solid var(--ink);padding:12px 16px;font-family:var(--display);font-size:14px;font-weight:500;color:var(--ink);cursor:pointer}
.mapbar button[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.mapbar button:hover{background:var(--sand-pale);color:var(--ink)}
.mapbar button[aria-pressed=true]:hover{background:var(--ink)}
.mapsvg{display:block;width:100%;height:auto;font-family:var(--mono)}
.mapsvg .glab{font-size:11px;letter-spacing:.1em;text-transform:uppercase;fill:var(--ink);font-weight:500}
.mapsvg .gsub{font-size:10.5px;fill:var(--mist);letter-spacing:.04em}
.mapsvg .b{cursor:pointer;transition:opacity .2s}
.mapsvg .b.dim{opacity:.25}
.mapsvg .signed{fill:var(--ink);stroke:var(--ink);stroke-width:1.5}
.mapsvg .ongoing{fill:var(--sand);stroke:var(--sand-deep);stroke-width:1.5}
.mapsvg .stopped{fill:url(#hatch);stroke:var(--ink);stroke-width:1}
.mapsvg .conf{stroke-dasharray:3 3}
.mapsvg .bn{font-size:9.5px;pointer-events:none;letter-spacing:0}
.mapsvg .bn.onink{fill:var(--paper)}
.mapsvg .bn.onpaper{fill:var(--ink)}
.maplegend{display:flex;flex-wrap:wrap;gap:18px 26px;padding:12px 16px;border-top:1.5px solid var(--ink);font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist);text-transform:uppercase;align-items:center}
.maplegend span{display:inline-flex;align-items:center;gap:8px}
.maplegend svg{width:18px;height:18px;overflow:visible}
.tip{position:absolute;pointer-events:none;background:var(--ink);color:var(--paper);padding:12px 14px;max-width:300px;font-size:14px;line-height:1.45;border:1px solid var(--sand);opacity:0;transition:opacity .15s;z-index:5}
.tip.on{opacity:1}
.tip .t{font-family:var(--display);font-weight:600;font-size:15px;margin-bottom:4px;line-height:1.25}
.tip .m{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--sand);text-transform:uppercase;margin-bottom:6px}
.tip .r{font-size:13px;color:var(--rule-2)}
details.linelist{margin-top:28px;border:1.5px solid var(--ink)}
details.linelist summary{padding:14px 18px;cursor:pointer;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;list-style:none;display:flex;justify-content:space-between}
details.linelist summary::-webkit-details-marker{display:none}
details.linelist summary::after{content:"+ open"}
details.linelist[open] summary::after{content:"- close"}
details.linelist .tblwrap{border-top:1.5px solid var(--ink)}
details.linelist td{font-size:14px}
.st{display:inline-block;width:10px;height:10px;border:1px solid var(--ink);margin-right:8px;vertical-align:-1px}
.st.signed{background:var(--ink)}.st.ongoing{background:var(--sand);border-color:var(--sand-deep)}.st.stopped{background:repeating-linear-gradient(135deg,var(--ink) 0 1px,transparent 1px 3px)}

/* case notes */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1.5px solid var(--paper)}
.cases>div{padding:22px;border-right:.5px solid var(--rule-2)}
.cases>div:last-child{border-right:0}
.cases h3{font-size:19px;margin:8px 0 10px}
.cases p{font-size:15px;color:var(--rule-2);margin:0}
@media(max-width:820px){.cases{grid-template-columns:1fr}.cases>div{border-right:0;border-bottom:.5px solid var(--rule-2)}.cases>div:last-child{border-bottom:0}}

/* services: data sheets */
.ds{border:1.5px solid var(--ink);margin-bottom:40px;background:var(--paper)}
.ds .dshead{display:grid;grid-template-columns:110px 1fr auto;border-bottom:1.5px solid var(--ink)}
.ds .dshead>*{padding:14px 18px;border-right:.5px solid var(--ink)}
.ds .dshead>*:last-child{border-right:0}
.ds .dshead .tg{font-family:var(--mono);font-size:14px;color:var(--sand-deep);display:flex;align-items:center}
.ds .dshead h2{font-size:clamp(22px,2.4vw,30px)}
.ds .dshead .who{font-size:15px;color:var(--mist);margin:6px 0 0}
.ds .dshead .sh{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist);display:flex;align-items:center;white-space:nowrap}
.ds .row{display:grid;grid-template-columns:200px 1fr;border-bottom:.5px solid var(--ink)}
.ds .row:last-child{border-bottom:0}
.ds .row>dt{padding:16px 18px;border-right:.5px solid var(--ink);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
.ds .row>dd{margin:0;padding:16px 18px;font-size:16px}
.ds dd p{margin:0}
.ds dd ul{margin:0;padding-left:20px}
.ds dd li{margin-bottom:6px}
.ds dl{margin:0}
@media(max-width:760px){.ds .dshead{grid-template-columns:80px 1fr}.ds .dshead .sh{display:none}.ds .row{grid-template-columns:1fr}.ds .row>dt{border-right:0;border-bottom:.5px dashed var(--rule);padding-bottom:8px}}

/* about */
.bio{display:grid;grid-template-columns:minmax(220px,2fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:start}
.bio figure{margin:0;border:1.5px solid var(--ink);padding:8px;position:sticky;top:20px}
.bio figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--mist);margin-top:8px}
.bio .text p{max-width:66ch}
@media(max-width:760px){.bio{grid-template-columns:1fr}.bio figure{position:static;max-width:320px}}
table.rev td:first-child{font-family:var(--mono);font-size:13px;white-space:nowrap;color:var(--sand-deep);width:120px}
table.rev h3{font-size:17px;margin-bottom:2px}
table.rev .org{font-family:var(--mono);font-size:12px;color:var(--mist);letter-spacing:.04em;margin-bottom:6px}
table.rev p{font-size:15px;margin:0}
.cred{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.cred ul{list-style:none;margin:0;padding:0;font-size:15px}
.cred li{display:grid;grid-template-columns:64px 1fr;gap:10px;padding:8px 0;border-bottom:.5px solid var(--ink-3)}
.cred li span{font-family:var(--mono);font-size:12px;color:var(--sand)}
@media(max-width:820px){.cred{grid-template-columns:1fr}}

/* contact */
.chan{list-style:none;margin:0;padding:0;border:1.5px solid var(--paper)}
.chan li{display:grid;grid-template-columns:120px 1fr;border-bottom:.5px solid var(--rule-2)}
.chan li:last-child{border-bottom:0}
.chan .k{padding:16px 18px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--rule-2);border-right:.5px solid var(--rule-2)}
.chan div{padding:14px 18px}
.chan a{font-family:var(--display);font-weight:600;font-size:18px;text-decoration:none}
.chan .sub{display:block;font-size:14px;color:var(--rule-2);margin-top:2px}
@media(max-width:600px){.chan li{grid-template-columns:1fr}.chan .k{border-right:0;padding-bottom:0}}

/* cta band */
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.6vw,32px)}
.cta-band p{margin:8px 0 0;color:var(--rule-2)}

/* small screens: drawings scroll sideways rather than shrinking to illegibility */
@media(max-width:760px){
  .hero .drawing{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .hero .drawing .flow{min-width:680px}
  .mapscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .mapsvg{min-width:820px}
  table.streams th:nth-child(4),table.streams td:nth-child(4){display:none}
  td.big{font-size:22px}
}

button.copy{background:none;border:0;padding:0;font:inherit;font-size:14px;font-weight:500;color:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer;font-family:var(--display)}
button.copy:hover{color:var(--sand)}