@font-face{font-family:"Plex Sans";src:url(/fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(/fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Sans";src:url(/fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Mono";src:url(/fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Mono";src:url(/fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Mono";src:url(/fonts/ibm-plex-mono-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Condensed";src:url(/fonts/ibm-plex-sans-condensed-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Condensed";src:url(/fonts/ibm-plex-sans-condensed-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}

:root{
  --ink:#141618;--ink-2:#3D4349;--ink-3:#5A6168;--paper:#E9ECEC;--paper-2:#D7DCDD;--white:#FFFFFF;
  --rule:#B8BFC4;--rule-soft:#D0D5D8;--accent:#B0174F;--accent-dark:#7E0F38;--accent-tint:#F3E3EA;--accent-on-ink:#FF7FAE;
  --mono:"Plex Mono",ui-monospace,Consolas,monospace;--sans:"Plex Sans",system-ui,sans-serif;--cond:"Plex Condensed","Arial Narrow",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6}
a{color:var(--accent)}a:hover{color:var(--accent-dark)}
img,svg,canvas{max-width:100%}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;background:var(--white);padding:8px 12px;z-index:10}

/* header / footer */
.site-head{background:var(--ink);color:var(--paper)}
.site-head .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;color:var(--white);text-decoration:none;font-family:var(--mono);font-size:15px;font-weight:600;letter-spacing:.14em}
.brand:hover{color:var(--white)}
.nav{display:flex;flex-wrap:wrap;gap:4px;font-family:var(--mono);font-size:13px;letter-spacing:.08em}
.nav a{color:var(--paper);text-decoration:none;padding:12px}
.nav a:hover,.nav a[aria-current=page]{color:var(--white);text-decoration:underline;text-underline-offset:6px}
.site-foot{background:var(--ink);color:#C9CFD3}
.site-foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding-top:28px;padding-bottom:28px;font-family:var(--mono);font-size:12px;letter-spacing:.06em}
.site-foot a{color:#C9CFD3;padding:6px 0}.site-foot nav{display:flex;flex-wrap:wrap;gap:4px 18px}

/* type */
.label{font-family:var(--mono);font-size:13px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;margin:0}
.label.on-ink{color:var(--accent-on-ink)}
.mini{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--ink-2);text-transform:uppercase}
h1,h2,h3{font-family:var(--cond);font-weight:700;letter-spacing:-.02em;line-height:1;margin:0}
.display{font-size:clamp(48px,7vw,80px);line-height:.95}
.h2{font-size:clamp(36px,4.5vw,52px)}
.lede{font-size:18px;color:var(--ink-2);max-width:520px;margin:0}

/* controls */
.btn{display:inline-block;background:var(--accent);color:var(--white);text-decoration:none;font-family:var(--mono);font-size:14px;font-weight:600;letter-spacing:.08em;padding:14px 20px;border:0;cursor:pointer;text-transform:uppercase}
.btn:hover{background:var(--accent-dark);color:var(--white)}
.btn.ghost{background:var(--white);color:var(--ink);outline:1.5px solid var(--ink);outline-offset:-1.5px}
.btn.ghost:hover{background:var(--ink);color:var(--white)}
.btn.light{background:var(--white);color:var(--ink)}.btn.light:hover{background:var(--paper)}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg button{font-family:var(--mono);font-size:15px;min-height:44px;padding:10px 14px;cursor:pointer;border:1.5px solid var(--ink);background:var(--white);color:var(--ink)}
.seg button[aria-pressed=true]{background:var(--ink);color:var(--white)}
.field{display:flex;flex-direction:column;gap:8px}
.field input,.field select{font-family:var(--mono);font-size:18px;padding:10px 12px;border:1.5px solid var(--ink);background:var(--white);color:var(--ink);border-radius:0;min-height:48px;width:100%}
.readout{border-top:1.5px solid var(--ink);font-family:var(--mono);font-size:15px;margin:0}
.readout div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--rule)}
.readout div:last-child{border-bottom:1.5px solid var(--ink)}
.readout dt{color:var(--ink-2)}.readout dd{margin:0;font-weight:600;text-align:right}
.note{font-size:15px;color:var(--ink-2);margin:0}
.note.warn{color:var(--accent-dark);font-weight:500}

/* homepage */
.hero{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-start;padding-top:56px;padding-bottom:64px}
.hero-copy{flex:1 1 400px;min-width:0;display:flex;flex-direction:column;gap:22px}
.hero-row{display:flex;flex-wrap:wrap;gap:16px}
.board{flex:1.4 1 520px;min-width:0;background:var(--paper-2);padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:18px}
.board #diagram{width:100%}
.board svg{display:block;width:100%;height:auto;max-height:460px}
.legend{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;font-family:var(--mono);font-size:12px;color:var(--ink-2)}
.legend span{display:flex;align-items:center;gap:8px}
.sw{display:inline-block;width:16px;height:10px}

.mock{background:var(--ink);color:var(--paper)}
.mock .wrap{display:flex;flex-wrap:wrap;gap:56px;align-items:center;padding-top:64px;padding-bottom:64px}
.mock-copy{flex:1 1 420px;min-width:0;display:flex;flex-direction:column;gap:18px}
.mock-copy h2{color:var(--white);font-size:clamp(40px,5vw,56px)}
.mock-copy p{color:#C9CFD3;font-size:18px;max-width:460px;margin:0}
.mock-art{flex:1 1 420px;min-width:0;display:flex;justify-content:center;padding:24px 0;perspective:1400px}
.book3d{position:relative;width:220px;height:330px;transform:rotateY(-28deg) rotateX(4deg);transform-style:preserve-3d}
.book3d .front{position:absolute;inset:0;background:var(--accent);box-shadow:30px 30px 60px rgba(0,0,0,.45);display:flex;flex-direction:column;justify-content:space-between;padding:24px 22px 24px 36px;transform:translateZ(14px)}
.book3d .front small{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:#FFD6E5}
.book3d .front strong{font-family:var(--cond);font-size:32px;line-height:1;color:var(--white)}
.book3d .side{position:absolute;left:-14px;top:0;width:28px;height:100%;background:var(--accent-dark);transform:rotateY(-90deg);transform-origin:right center}
.book3d .pages{position:absolute;left:4px;top:6px;right:4px;bottom:2px;background:#F4F1EA;transform:translateZ(-14px)}

.jobs{background:var(--white);border-top:1.5px solid var(--ink)}
.jobs .wrap{padding-top:56px;padding-bottom:72px}
.jobs-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:28px}
.group{margin-bottom:36px}
.group-head{display:flex;gap:16px;align-items:baseline;border-bottom:1.5px solid var(--ink);padding-bottom:10px}
.group-head span{font-family:var(--mono);font-size:14px;color:var(--accent);font-weight:600}
.group-head h3{font-size:26px;font-weight:600;letter-spacing:-.01em}
.job{display:flex;flex-wrap:wrap;gap:6px 24px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--rule-soft);text-decoration:none;color:var(--ink)}
a.job:hover{background:var(--paper);color:var(--ink)}
.job .code{font-family:var(--mono);font-size:13px;color:var(--ink-3);width:48px}
.job .name{flex:1 1 260px;font-size:18px;font-weight:600}
.job .desc{flex:2 1 360px;font-size:15px;color:var(--ink-2)}
.job .tag{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--accent);width:110px;text-align:right}
.job.soon{color:var(--ink-3)}.job.soon .name{font-weight:500}.job.soon .tag{color:var(--ink-3)}

/* tool page */
.crumbs{font-family:var(--mono);font-size:12px;letter-spacing:.08em;padding-top:24px;color:var(--ink-3)}
.crumbs a{color:var(--ink-2)}
.tool-head{padding-top:20px;padding-bottom:32px;display:flex;flex-direction:column;gap:16px;max-width:860px}
.tool{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start;padding-bottom:56px}
.panel{flex:1 1 340px;min-width:0;display:flex;flex-direction:column;gap:20px;background:var(--white);padding:24px;border:1.5px solid var(--ink)}
.preview{flex:2 1 560px;min-width:0;display:flex;flex-direction:column;gap:16px}
.preview .board{flex:none;width:100%;padding:28px 16px}
.dl{display:flex;flex-wrap:wrap;gap:10px}
.units{display:flex;gap:6px}
.prose{background:var(--white);border-top:1.5px solid var(--ink)}
.prose .wrap{padding-top:48px;padding-bottom:64px;display:flex;flex-wrap:wrap;gap:48px}
.prose article{flex:999 1 560px;min-width:0;max-width:760px}
.prose article h2{font-size:34px;margin:40px 0 12px}.prose article h2:first-child{margin-top:0}
.prose article h3{font-family:var(--sans);font-size:19px;font-weight:600;letter-spacing:0;margin:24px 0 6px}
.prose aside{flex:1 1 280px;min-width:0;display:flex;flex-direction:column;gap:8px}
.ad{border:1px dashed var(--rule);min-height:280px;display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-family:var(--mono);font-size:12px;background:#FAFBFB}
table.spec{border-collapse:collapse;width:100%;font-size:15px;margin:12px 0}
.spec th,.spec td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--rule-soft);vertical-align:top}
.spec th{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);border-bottom:1.5px solid var(--ink)}
.table-scroll{overflow-x:auto}
.page{max-width:760px;padding-top:40px;padding-bottom:64px}
.page h1{font-size:clamp(40px,6vw,64px);margin-bottom:24px}
.page h2{font-size:28px;margin:32px 0 8px}

@media (max-width:600px){
  .board{padding:28px 12px}
  .job .tag{width:auto;text-align:left}
  .job .code{width:auto}
}

.f-pages{flex:0 1 150px}
.sw-bleed{background:#F6D6E2}.sw-trim{border-top:2px solid #B0174F;height:0}.sw-safe{border-top:2px dashed #1F5FA8;height:0}.sw-fold{border-top:2px dotted #141618;height:0}.sw-bar{background:#E4E7EA}
.mini.on-ink{color:#C9CFD3}
.note.small{font-size:14px}
.board #diagram{min-height:200px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
h1,h2,h3{text-wrap:balance}p{text-wrap:pretty}

.stage{position:relative;width:100%;aspect-ratio:4/3;background:var(--paper-2);overflow:hidden;touch-action:none;cursor:grab}
.stage:active{cursor:grabbing}
.stage canvas{display:block;width:100%!important;height:100%!important}
.stage.checker{background-color:#EEF0F0;background-image:linear-gradient(45deg,#DCE0E1 25%,transparent 25%,transparent 75%,#DCE0E1 75%),linear-gradient(45deg,#DCE0E1 25%,transparent 25%,transparent 75%,#DCE0E1 75%);background-size:24px 24px;background-position:0 0,12px 12px}
.drop{display:flex;flex-direction:column;gap:4px;align-items:center;justify-content:center;text-align:center;border:1.5px dashed var(--ink);padding:22px 12px;cursor:pointer;background:var(--paper);min-height:96px}
.drop.over{background:var(--accent-tint);border-color:var(--accent)}
.drop small{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop:focus-within{outline:3px solid var(--accent);outline-offset:2px}
#thick-fields{display:flex;flex-direction:column;gap:20px}
[hidden]{display:none!important}
.colour{width:88px!important;height:48px;padding:4px!important;cursor:pointer}
.btn:disabled{opacity:.45;cursor:not-allowed}
.spread{padding:24px 12px}
.spread canvas{display:block;margin:0 auto;box-shadow:0 2px 10px rgba(20,22,24,.18)}
#kw-boxes{display:flex;flex-direction:column;gap:14px}
.kw{display:flex;flex-direction:column;gap:6px}
.kw-row{display:flex;gap:10px;align-items:center}
.kw-row input{flex:1;min-width:0;font-family:var(--mono);font-size:16px;padding:10px 12px;border:1.5px solid var(--ink);background:var(--white);color:var(--ink);border-radius:0;min-height:46px}
.kw-row input[aria-invalid=true]{border-color:var(--accent)}
.kw-count{font-family:var(--mono);font-size:13px;color:var(--ink-2);min-width:52px;text-align:right}
.kw-count.over,.mini.over{color:var(--accent-dark);font-weight:600}
.kw-msgs{margin:0;padding-left:18px;font-size:14px;color:var(--accent-dark)}
.kw-msgs:empty{display:none}
.kw-msgs li{margin:2px 0}
.ds-panel{gap:12px}
.ds-bar{display:flex;flex-wrap:wrap;gap:6px}
.ds-bar button{font-family:var(--mono);font-size:14px;min-height:44px;padding:8px 12px;border:1.5px solid var(--ink);background:var(--white);color:var(--ink);cursor:pointer}
.ds-bar button:hover{background:var(--paper)}
.ds-editor{min-height:320px;border:1.5px solid var(--ink);padding:16px;background:var(--white);font-family:Arial,sans-serif;font-size:14px;line-height:20px;color:#0F1111;overflow-wrap:anywhere}
.ds-editor:focus{outline:3px solid var(--accent);outline-offset:2px}
.ds-editor p{margin:0 0 14px}.ds-editor p+p{margin-top:-4px}
.ds-editor h4{font-family:Arial,sans-serif;font-size:18px;line-height:24px;font-weight:700;margin:0;padding:2px 0;letter-spacing:0}
.ds-editor h5{font-family:Arial,sans-serif;font-size:14px;line-height:20px;font-weight:700;margin:0;letter-spacing:0}
.ds-editor h6{font-family:Arial,sans-serif;font-size:12px;line-height:16px;font-weight:700;margin:0;padding-bottom:1px;letter-spacing:0}
.ds-editor ul{margin:0 0 0 18px;padding:0;list-style:disc}.ds-editor ol{margin:0 0 0 20px;padding:0}
.ds-editor p:has(> br:only-child){margin:0}.ds-editor p:has(> br:only-child)+p{margin-top:0}
.ds-preview{font-size:15px;line-height:1.55;color:#0F1111;max-height:420px;overflow:auto;overflow-wrap:anywhere}
.ds-import summary{cursor:pointer;font-family:var(--mono);font-size:13px;padding:8px 0}
.ds-import[open]{display:flex;flex-direction:column;gap:8px}
textarea{font-family:var(--mono);font-size:13px;padding:10px;border:1.5px solid var(--ink);background:var(--white);color:var(--ink);width:100%;border-radius:0;resize:vertical}
.tabs{display:flex;gap:0;border-bottom:1.5px solid var(--ink)}
.tabs button{font-family:var(--mono);font-size:14px;letter-spacing:.06em;text-transform:uppercase;min-height:46px;padding:10px 18px;border:0;background:transparent;color:var(--ink-2);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1.5px}
.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent);font-weight:600}
.panel.flat{border:0;padding:20px 0 0;background:transparent}
.preview .panel{flex:none}
.prose ul{padding-left:20px}
.page-tabs{margin-bottom:24px}
.edit-pages{border-top:1.5px solid var(--ink);padding-top:16px}
.steps{margin:8px 0 12px;padding-left:20px;font-size:15px;color:var(--ink-2)}
.steps li{margin-bottom:8px}
input[type=file]{font-family:var(--mono);font-size:14px;max-width:100%}
.kw-msgs li.info{color:var(--ink-2)}
.kw-msgs li.add{color:#1F6B3A}
.az-frame{background:#FFFFFF;outline:1px solid var(--rule-soft);overflow:hidden;position:relative}
.az-scale{width:786px;transform-origin:0 0;position:relative;padding:0}
.az-desc{font-family:Arial,sans-serif;font-size:14px;line-height:20px;color:#0F1111;overflow-wrap:anywhere}
.az-desc p{margin:0 0 14px}.az-desc p+p{margin-top:-4px}
.az-desc h4{font-size:18px;line-height:24px;font-weight:700;margin:0;padding:2px 0;font-family:Arial,sans-serif;letter-spacing:0}
.az-desc h5{font-size:14px;line-height:20px;font-weight:700;margin:0;font-family:Arial,sans-serif;letter-spacing:0}
.az-desc h6{font-size:12px;line-height:16px;font-weight:700;margin:0;padding-bottom:1px;font-family:Arial,sans-serif;letter-spacing:0}
.az-desc ul{margin:0 0 0 18px;padding:0;list-style:disc}.az-desc ol{margin:0 0 0 20px;padding:0}
.az-desc li{margin:0}
.az-fold{position:absolute;left:0;right:0;top:280px;bottom:0;border-top:2px dashed var(--accent);background:rgba(255,255,255,.6);pointer-events:none}
.az-below{opacity:.45}
.ds-hints{margin:0;padding-left:18px;font-size:15px;color:var(--ink-2)}
.ds-hints li{margin-bottom:6px}.ds-hints li.ok{color:#1F6B3A}
.related{border-top:1.5px solid var(--ink);background:var(--paper)}
.related .wrap{padding-top:40px;padding-bottom:48px}
.h3x{font-size:30px;margin-bottom:18px}
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:1fr;gap:14px;margin-bottom:18px}
@media (max-width:1199px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.rel-grid{grid-template-columns:minmax(0,1fr);grid-auto-rows:auto}}
.rel{display:flex;flex-direction:column;gap:6px;background:var(--white);border:1.5px solid var(--ink);padding:18px;text-decoration:none;color:var(--ink)}
.rel:hover{background:var(--accent-tint);color:var(--ink)}
.rel strong{font-size:17px}.rel span:last-child{font-size:14px;color:var(--ink-2);min-height:2lh}
.intro{background:var(--white);border-top:1.5px solid var(--ink)}
.intro .wrap{padding-top:56px;padding-bottom:56px}
.intro-grid{display:flex;flex-wrap:wrap;gap:40px}
.intro-grid>div:first-child{flex:1 1 340px;min-width:0;display:flex;flex-direction:column;gap:12px}
.intro-copy{flex:1.4 1 460px;min-width:0}
.intro-copy p{margin:0 0 14px;color:var(--ink-2)}
.prose article ol.steps{font-size:16px}
.prose article table.spec td:first-child{white-space:nowrap}