/* planex2d.org: the site's shared style, from the design prototype "planex2d tool pages" (2026-10-29).
   Fonts: IBM Plex Sans, IBM Plex Mono and Newsreader, served from this site (SIL Open Font License 1.1, the
   license files are next to them in fonts/). */
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:100 700;font-display:swap;src:url(fonts/ibm-plex-sans-variable.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-mono-500.woff2) format("woff2")}
@font-face{font-family:"Newsreader";font-style:normal;font-weight:200 800;font-display:swap;src:url(fonts/newsreader-variable.woff2) format("woff2")}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:200 800;font-display:swap;src:url(fonts/newsreader-italic-variable.woff2) format("woff2")}
html,body{margin:0;min-height:100%}
html.is-dark{background:#121419}
.p2d{
  container-type:inline-size;
  color-scheme:light;
  --paper:light-dark(#f2f3f5,#121419);
  --grid-minor:light-dark(rgb(27 34 45 / .045),rgb(233 235 239 / .035));
  --grid-major:light-dark(rgb(27 34 45 / .075),rgb(233 235 239 / .06));
  --sheet:light-dark(#ffffff,#1a1d25);
  --sheet-2:light-dark(#f7f8fa,#20242d);
  --hair:light-dark(#dcdfe5,#2c313c);
  --hair-strong:light-dark(#c3c8d1,#3f4552);
  --frame:light-dark(#1b222d,#c9ced8);
  --ink:light-dark(#1b222d,#eceef2);
  --ink-muted:light-dark(#545c6a,#a3aab6);
  --ink-label:light-dark(#5f6775,#9198a5);
  --accent:#cc66be;
  --accent-hover:light-dark(#c255b3,#da88ce);
  --accent-ink:light-dark(#ac399c,#cc66be);
  --accent-ink-hover:light-dark(#99338b,#da88ce);
  --accent-fg:light-dark(#1b222d,#14161c);
  --accent-wash:light-dark(#faedf8,#2a1e2c);
  --construct:light-dark(rgb(204 102 190 / .7),rgb(204 102 190 / .6));
  --mark-edge:light-dark(#1b222d,#eceef2);
  --font-display:"Newsreader","Iowan Old Style",Georgia,serif;
  --font-sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --lift-1:0 1px 0 rgb(27 34 45 / .04),0 1px 2px rgb(27 34 45 / .06);
  --lift-2:0 1px 0 rgb(27 34 45 / .04),0 2px 4px rgb(27 34 45 / .04),0 22px 44px -28px rgb(27 34 45 / .45);
  --lift-pop:0 1px 2px rgb(27 34 45 / .08),0 16px 40px -12px rgb(27 34 45 / .28);
  --header-h:64px;--page-w:1200px;
  color:var(--ink);
  font:400 16.5px/1.65 var(--font-sans);
  -webkit-font-smoothing:antialiased;
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),linear-gradient(var(--grid-minor) 1px,transparent 1px),linear-gradient(90deg,var(--grid-minor) 1px,transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px;
  background-position:calc(50% + 12px) -1px;
  min-height:100%;
}
html.is-dark .p2d{color-scheme:dark;--lift-1:0 1px 2px rgb(0 0 0 / .5);--lift-2:0 2px 6px rgb(0 0 0 / .35),0 28px 56px -28px rgb(0 0 0 / .8);--lift-pop:0 2px 6px rgb(0 0 0 / .5),0 20px 48px -12px rgb(0 0 0 / .7)}
.p2d *,.p2d *::before,.p2d *::after{box-sizing:border-box}
.p2d svg{display:block;max-width:100%}
.p2d a{color:var(--accent-ink);text-decoration-thickness:1px;text-underline-offset:3px}
.p2d a:hover{color:var(--accent-ink-hover)}
.p2d :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}
.p2d code,.p2d pre{font-family:var(--font-mono);font-size:.86em}
.p2d :not(pre)>code{background:var(--sheet-2);border:1px solid var(--hair);border-radius:3px;padding:.08em .35em}
.p2d h1,.p2d h2,.p2d h3{margin:0;font-family:var(--font-display);font-weight:450;letter-spacing:-.015em;line-height:1.08;font-optical-sizing:auto}
.p2d h1 em,.p2d h2 em{font-style:italic;color:var(--accent)}
.p2d p{margin:0}
.icon{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.container{width:100%;max-width:var(--page-w);margin-inline:auto;padding-inline:24px}
.mono-label,.eyebrow{font:500 11.5px/1.2 var(--font-mono);letter-spacing:.09em;text-transform:uppercase;color:var(--ink-label)}
.eyebrow{display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor}
.node{display:inline-block;width:9px;height:9px;border-radius:50%;border:1.5px solid var(--accent);background:var(--sheet);flex:none}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:0 16px;border:1px solid var(--hair-strong);border-radius:5px;background:var(--sheet);color:var(--ink);box-shadow:0 1px 0 rgb(27 34 45 / .08);font:500 15px/1 var(--font-sans);text-decoration:none;cursor:pointer}
.btn .icon{width:16px;height:16px}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-fg);box-shadow:inset 0 1px 0 rgb(255 255 255 / .18),0 1px 0 rgb(27 34 45 / .15),0 6px 14px -8px var(--accent)}
.btn-ghost{border-color:transparent;background:transparent;box-shadow:none;color:var(--ink-muted)}
.btn-ghost:hover{background:light-dark(rgb(27 34 45 / .06),rgb(233 235 239 / .08));color:var(--ink)}
.btn-icon{width:40px;padding:0}
.btn-sm{min-height:34px;padding:0 12px;font-size:14px}
.btn-sm.btn-icon{width:34px;padding:0}

.site-header{position:sticky;top:0;z-index:50;background:light-dark(rgb(242 243 245 / .82),rgb(18 20 25 / .82));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--hair-strong)}
.header-inner{display:flex;align-items:center;gap:36px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{width:30px;height:30px}
.brand-wordmark{height:21px;width:auto}
.edge{stroke:var(--mark-edge)}
.wm-plan{fill:var(--ink)}
.wm-ex2d{fill:#cc66be}
.nav{display:flex;align-items:center;gap:4px;flex:1}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.p2d .nav-link{position:relative;display:inline-flex;align-items:center;gap:4px;height:40px;padding:0 12px;border:0;border-radius:5px;background:none;color:var(--ink-muted);font:500 15px/1 var(--font-sans);text-decoration:none;cursor:pointer}
.p2d .nav-link:hover,.p2d .nav-link.is-current{color:var(--ink)}
.nav-link.is-current::after{content:"";position:absolute;left:50%;bottom:-17px;width:9px;height:9px;margin-left:-12.5px;border-radius:50%;border:1.5px solid var(--accent);background:var(--paper)}
.nav-link .chev{width:15px;height:15px}
.nav-link[aria-expanded="true"] .chev{transform:rotate(180deg)}
.nav-end{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-group-label{display:none}
.has-menu{position:relative}
.menu{position:absolute;top:calc(100% + 14px);left:-12px;width:380px;margin:0;padding:6px;list-style:none;background:var(--sheet);border:1px solid var(--hair);border-radius:6px;box-shadow:var(--lift-pop)}
.menu.is-hidden{display:none}
.p2d .menu-item{display:grid;grid-template-columns:30px 1fr;gap:1px 10px;align-items:baseline;padding:11px 12px;border-radius:4px;text-decoration:none;color:var(--ink)}
.p2d .menu-item:hover{background:var(--sheet-2)}
.p2d .menu-item.is-active{background:var(--accent-wash)}
.menu-no{grid-row:span 2;font:500 12px/1 var(--font-mono);color:var(--accent-ink);letter-spacing:.04em;padding-top:3px}
.menu-title{font-family:var(--font-display);font-size:19px;line-height:1.2;font-weight:450}
.menu-desc{font-size:13.5px;line-height:1.4;color:var(--ink-muted)}
.menu-foot{margin:6px -6px -6px;padding:10px 18px;border-top:1px solid var(--hair);background:var(--sheet-2);border-radius:0 0 6px 6px}
.menu-toggle{display:none;margin-left:auto}
.menu-toggle .i-close{display:none}
.site-header.is-open .menu-toggle .i-menu{display:none}
.site-header.is-open .menu-toggle .i-close{display:block}
.theme-toggle .i-sun{display:none}
html.is-dark .p2d .theme-toggle .i-sun{display:block}
html.is-dark .p2d .theme-toggle .i-moon{display:none}

.hero{padding:96px 0 56px;text-align:center}
.hero .container{position:relative}
.kicker{display:inline-flex;align-items:center;gap:12px;margin-bottom:26px}
.kicker-no{padding:5px 9px 4px;border:1px solid var(--accent);border-radius:99px;font:500 11.5px/1 var(--font-mono);letter-spacing:.06em;color:var(--accent-ink);background:var(--sheet)}
.p2d .hero h1{font-size:76px;line-height:1;letter-spacing:-.025em;max-width:15ch;margin-inline:auto}
.lead{max-width:56ch;margin:26px auto 0;font-size:19px;line-height:1.6;color:var(--ink-muted)}
.facts{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 28px;margin:30px 0 0;padding:0;list-style:none}
.facts li{display:inline-flex;align-items:center;gap:9px}
.p2d .facts a{color:inherit;text-decoration-color:var(--construct)}
.sketch{position:absolute;top:50%;width:200px;transform:translateY(-58%);pointer-events:none}
.sketch-left{left:0}
.sketch-right{right:0}
.sketch .geo{fill:none;stroke:var(--ink);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.sketch .aux{fill:none;stroke:var(--construct);stroke-width:1;stroke-dasharray:4 4}
.sketch .ring{fill:var(--paper);stroke:var(--accent);stroke-width:1.4}
.sketch .dot{fill:var(--ink)}
.sketch text{font:500 10.5px var(--font-mono);letter-spacing:.06em;fill:var(--ink-label)}

.tool{padding-bottom:40px}
.sheet{display:grid;grid-template-columns:22px minmax(0,1fr) 22px;grid-template-rows:22px auto 22px;padding:0;background:var(--sheet);border:1px solid var(--hair);border-radius:4px;box-shadow:var(--lift-2)}
.zones{display:flex;font:500 10px/1 var(--font-mono);color:var(--ink-label)}
.zones span{flex:1;display:grid;place-items:center}
.zones-top{grid-column:2;grid-row:1}
.zones-bottom{grid-column:2;grid-row:3}
.zones-top span+span,.zones-bottom span+span{border-left:1px solid var(--hair)}
.zones-top span,.zones-bottom span{height:10px;margin-top:6px}
.zones-left{grid-column:1;grid-row:2;flex-direction:column}
.zones-right{grid-column:3;grid-row:2;flex-direction:column}
.zones-left span+span,.zones-right span+span{border-top:1px solid var(--hair)}
.zones-left span,.zones-right span{width:10px;margin-left:6px}
.sheet-area{grid-column:2;grid-row:2;position:relative;border:1.5px solid var(--frame);overflow:hidden}
.tool-body{position:relative;height:640px;display:grid;grid-template-rows:auto 1fr;background-color:var(--paper);background-image:linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),linear-gradient(var(--grid-minor) 1px,transparent 1px),linear-gradient(90deg,var(--grid-minor) 1px,transparent 1px);background-size:120px 120px,120px 120px,24px 24px,24px 24px;background-position:-1px -1px}
.app-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--hair);background:var(--sheet);min-height:46px}
.stage{display:grid;place-items:center;padding:24px}
.drop{display:grid;justify-items:center;gap:12px;width:min(500px,100%);padding:40px 28px;text-align:center;border:1.5px dashed var(--hair-strong);border-radius:4px;background:var(--sheet);box-shadow:var(--lift-1)}
.drop .icon{width:26px;height:26px;color:var(--accent)}
.drop strong{font:450 26px/1.1 var(--font-display);letter-spacing:-.01em}
.drop p{color:var(--ink-muted);font-size:14.5px;margin-bottom:6px}
.titleblock{grid-column:2;grid-row:3;display:grid;grid-template-columns:auto minmax(0,1.4fr) minmax(0,1fr) auto;border:1.5px solid var(--frame)}
.tb-cell{display:flex;flex-direction:column;justify-content:center;gap:4px;min-width:0;padding:8px 14px}
.tb-cell+.tb-cell{border-left:1px solid var(--frame)}
.tb-cell>.mono-label{font-size:10px}
.tb-stack{display:flex;flex-direction:column;gap:4px;min-width:0}
.tb-stack .mono-label{font-size:10px}
.tb-value{font-size:14px;line-height:1.3;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-brand{flex-direction:row;align-items:center;justify-content:flex-start;gap:10px}
.tb-brand svg{width:26px;height:26px}
.tb-brand .tb-value{font-family:var(--font-display);font-size:18px}
.tb-actions{flex-direction:row;align-items:center;gap:2px;padding:4px 6px}
.tool-status{display:inline-flex;align-items:center;gap:9px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-wash);flex:none}
.tool-note{margin-top:14px;text-align:center;font-size:14px;color:var(--ink-muted)}

.section{padding:76px 0}
.section-head{margin-bottom:36px}
.section-head .eyebrow{margin-bottom:14px}
.p2d .section-head h2{font-size:44px}
.section-head p{margin-top:14px;color:var(--ink-muted);max-width:56ch;font-size:17px}
.section-head-row{display:flex;align-items:end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.examples{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px;margin:0;padding:0;list-style:none}
.example{position:relative;display:flex;flex-direction:column;background:var(--sheet);border:1px solid var(--hair);border-radius:4px;box-shadow:var(--lift-1)}
.example-figure{position:relative;aspect-ratio:8/5;margin:8px 8px 0;border:1px solid var(--hair);background-color:var(--sheet-2);background-image:linear-gradient(var(--grid-minor) 1px,transparent 1px),linear-gradient(90deg,var(--grid-minor) 1px,transparent 1px);background-size:12px 12px;background-position:-1px -1px}
.example-figure svg{width:100%;height:100%}
.example-figure .geo{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-linejoin:round}
.example-figure .aux{fill:none;stroke:var(--construct);stroke-width:1;stroke-dasharray:4 3}
.example-figure .node{fill:var(--sheet-2);stroke:var(--accent);stroke-width:1.3}
.example-figure .vert{fill:var(--ink)}
.fig-no{position:absolute;left:10px;top:8px}
.fig-tag{position:absolute;right:8px;top:7px;padding:3px 6px;border-radius:3px;background:var(--sheet);border:1px solid var(--hair);color:var(--accent-ink);font:500 10.5px/1 var(--font-mono);letter-spacing:.06em}
.example-body{display:flex;flex-direction:column;gap:6px;padding:16px 18px 18px;flex:1}
.p2d .example h3{font-size:23px}
.example p{font-size:14.5px;color:var(--ink-muted)}
.example-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px}
.link-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 0;border:0;background:none;cursor:pointer;font:500 14.5px/1 var(--font-sans);color:var(--accent-ink)}
.link-btn .icon{width:16px;height:16px}
.p2d .example-actions a{font:500 11px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-label);text-decoration:none}

.method{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:32px 72px;align-items:start}
.method .section-head{margin:0}
.prose>*+*{margin-top:18px}
.p2d .prose h3{font-size:26px;margin-top:52px}
.prose h3+*{margin-top:14px}
.prose ul{padding-left:0;list-style:none}
.prose ul li{position:relative;padding-left:24px}
.prose ul li::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;border:1.5px solid var(--accent)}
.prose li+li{margin-top:8px}
.steps{list-style:none;padding:0;margin:0;counter-reset:step}
.steps li{position:relative;padding:0 0 30px 52px;counter-increment:step}
.steps li:last-child{padding-bottom:0}
.steps li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:-1px;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;border:1.5px solid var(--accent);background:var(--sheet);font:500 11.5px/1 var(--font-mono);color:var(--accent-ink)}
.steps li:not(:last-child)::after{content:"";position:absolute;left:15.5px;top:36px;bottom:4px;border-left:1px dashed var(--construct)}
.steps strong{display:block;font-family:var(--font-display);font-size:22px;font-weight:450;line-height:1.2;margin-bottom:4px}
.steps p{color:var(--ink-muted)}
.table-wrap{overflow-x:auto;background:var(--sheet);border:1.5px solid var(--frame)}
.p2d table{width:100%;border-collapse:collapse;font-size:15px}
.p2d th,.p2d td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--hair);vertical-align:top}
.p2d th+th,.p2d td+td{border-left:1px solid var(--hair)}
.p2d th{font:500 10.5px/1.2 var(--font-mono);letter-spacing:.09em;text-transform:uppercase;color:var(--ink-label);background:var(--sheet-2);border-bottom:1px solid var(--frame)}
.p2d tr:last-child td{border-bottom:0}
.p2d td:first-child{font:500 13.5px/1.6 var(--font-mono);letter-spacing:.04em}
.p2d td code{white-space:nowrap}
.prose pre{margin-top:16px;padding:16px 18px;overflow-x:auto;background:light-dark(#1b222d,#0d0f13);color:#e9ebef;border-radius:4px;line-height:1.55;box-shadow:var(--lift-1)}
.prompt{color:#cc66be}
.note{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:16px 18px;background:var(--sheet);border:1px solid var(--hair);border-radius:4px;box-shadow:var(--lift-1);font-size:15.5px}
.note-tag{padding:4px 7px 3px;border:1.5px solid var(--accent);border-radius:3px;color:var(--accent-ink);font:500 10.5px/1 var(--font-mono);letter-spacing:.1em;margin-top:2px}

.site-footer{padding:32px 0 48px}
.footer-tb{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr)) minmax(0,2fr);background:var(--sheet);border:1.5px solid var(--frame);box-shadow:var(--lift-1)}
.footer-tb .tb-cell{padding:14px 18px;gap:6px}
.footer-tb .tb-value{white-space:normal;font-size:15px}
.p2d .footer-tb .tb-value a{color:var(--ink);text-decoration-color:var(--construct)}
.footer-brand{flex-direction:row;align-items:center;gap:14px}
.full-mark{width:52px;height:52px}
.footer-brand .brand-wordmark{height:22px}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 16px;list-style:none;margin:0;padding:0}
.ramp{grid-column:1/-1;display:grid;grid-template-columns:repeat(8,1fr);height:6px;border-top:1.5px solid var(--frame)}

@container (max-width:1180px){.sketch{display:none}}
@container (max-width:980px){
  .method{grid-template-columns:1fr}
  .footer-tb{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-tb .footer-brand{grid-column:1/-1;border-bottom:1px solid var(--frame)}
  .footer-tb .tb-cell:nth-child(2){border-left:0}
  .footer-tb .footer-links-cell{grid-column:1/-1;border-left:0;border-top:1px solid var(--frame)}
}
@container (max-width:860px){
  .header-inner{gap:12px}
  .menu-toggle{display:inline-flex}
  .nav{position:absolute;top:var(--header-h);left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 20px;background:var(--paper);border-bottom:1px solid var(--hair-strong);box-shadow:var(--lift-pop)}
  .site-header.is-open .nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch}
  .p2d .nav-link{width:100%;height:50px;font-size:17px}
  .nav-link.is-current::after{display:none}
  .has-menu>.nav-link{display:none}
  .nav-group-label{display:block;padding:16px 12px 8px}
  .menu,.menu.is-hidden{display:block;position:static;width:auto;padding:0;border:0;box-shadow:none;background:none}
  .menu-foot{display:none}
  .nav-end{margin:8px 0 0;padding-top:12px;border-top:1px solid var(--hair)}
  .titleblock{grid-template-columns:minmax(0,1fr) auto}
  .titleblock .tb-brand,.titleblock .tb-reads{display:none}
  .titleblock .tb-cell:nth-child(2){border-left:0}
  .p2d .hero h1{font-size:52px}
}
@container (max-width:600px){
  .container{padding-inline:16px}
  .hero{padding:56px 0 36px}
  .p2d .hero h1{font-size:42px}
  .lead{font-size:17.5px}
  .facts{flex-direction:column;align-items:center;gap:8px}
  .tool .container{padding-inline:0}
  .sheet{grid-template-columns:minmax(0,1fr);grid-template-rows:auto;padding:8px;border-radius:0;border-inline:0}
  .zones{display:none}
  .sheet-area,.titleblock{grid-column:1}
  .sheet-area{grid-row:1}
  .titleblock{grid-row:2}
  .tool-body{height:560px}
  .tool-note{padding-inline:16px}
  .section{padding:64px 0}
  .p2d .section-head h2{font-size:34px}
  .footer-tb{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-tb .tb-cell:nth-child(4){grid-column:1/-1;border-left:0;border-top:1px solid var(--frame)}
}

/* the live pages, beyond the prototype */
.p2d .nav-link.is-planned,.p2d .menu-item.is-planned{cursor:default;opacity:.55}
.p2d .menu-item.is-planned:hover{background:none}
.planned-tag{margin-left:6px;font:500 10px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-label)}
.skip{position:absolute;left:-999px;top:8px;z-index:100;padding:8px 12px;background:var(--sheet);border:1px solid var(--hair)}
.skip:focus{left:8px}
/* the prototype's .p2d p{margin:0} outranks these (it set them inline) */
.p2d .lead{margin:26px auto 0}
.p2d .tool-note{margin-top:14px}
/* the hero sketches need room beside the heading and the lead (the prototype hid them only below 1180px, and
   its .p2d svg{display:block} outranked that rule) */
@container (max-width:1360px){.p2d .sketch{display:none}}
/* the tool pages' questions and their links to the other tools */
.faq{display:grid;gap:10px}
.faq-item{background:var(--sheet);border:1px solid var(--hair);border-radius:4px;box-shadow:var(--lift-1)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;cursor:pointer;list-style:none;font:450 19px/1.3 var(--font-display)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:none;font:500 16px/1 var(--font-mono);color:var(--accent-ink)}
.faq-item[open] summary::after{content:"\2212"}
.p2d .faq-item p{padding:0 18px 16px;color:var(--ink-muted);font-size:15.5px}
.p2d .more-note{margin-top:22px;color:var(--ink-muted);font-size:15px}
.p2d .prose>p+p{margin-top:14px}
/* links styled as buttons keep the button's colors (.p2d a outranks .btn) */
.p2d a.btn,.p2d a.btn:hover{color:var(--ink);text-decoration:none}
.p2d a.btn-primary,.p2d a.btn-primary:hover{color:var(--accent-fg)}
.p2d a.link-btn{text-decoration:none}
/* the loading mark: the logo hops and turns a third in the air, landing on its next face (brand identity, loading
   mark option D); the text below it says what is loading */
.loading-mark{display:block;width:64px;height:65px;overflow:visible}
.loading-mark .hop-shadow{fill:light-dark(#1b222d,#000);transform-origin:50px 91px;animation:hop-shadow .9s cubic-bezier(.45,0,.55,1) infinite}
.loading-mark .hop-jump{transform-origin:50px 87px;animation:hop-jump .9s infinite}
.loading-mark .hop-turn{transform-origin:50px 55.03px;animation:hop-turn 2.7s infinite}
@keyframes hop-jump{
  0%{transform:translateY(0) scale(1.08,.9);animation-timing-function:cubic-bezier(.2,.6,.35,1)}
  12%{transform:translateY(0) scale(.95,1.06);animation-timing-function:cubic-bezier(.25,.6,.4,1)}
  50%{transform:translateY(-14px) scale(1,1);animation-timing-function:cubic-bezier(.6,0,.8,.4)}
  86%{transform:translateY(0) scale(.98,1.03);animation-timing-function:ease-out}
  100%{transform:translateY(0) scale(1.08,.9)}}
@keyframes hop-turn{
  0%,4.5%{transform:rotate(0deg);animation-timing-function:cubic-bezier(.45,0,.55,1)}
  27.5%,37.8%{transform:rotate(120deg);animation-timing-function:cubic-bezier(.45,0,.55,1)}
  61.1%,71.1%{transform:rotate(240deg);animation-timing-function:cubic-bezier(.45,0,.55,1)}
  94.4%,100%{transform:rotate(360deg)}}
@keyframes hop-shadow{0%,100%{transform:scale(1.05);opacity:.22}50%{transform:scale(.62);opacity:.1}}
@media (prefers-reduced-motion:reduce){.loading-mark .hop-shadow,.loading-mark .hop-jump,.loading-mark .hop-turn{animation:none}.loading-mark .hop-shadow{opacity:.18}}
/* a second, smaller lead paragraph under a tool's lead: where to go for more */
.p2d .lead.lead-more{margin-top:12px;font-size:16px;color:var(--ink-muted)}
.p2d .lead-more a{color:var(--accent-ink)}
/* example and tool cards: the whole card opens what its main link opens (the link is stretched over the card), a
   download link stays above it; on hover the lift of the homepage's route panels */
.p2d .example:has(.link-btn){cursor:pointer;transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s}
.p2d .example:has(.link-btn):hover{transform:translateY(-3px);box-shadow:var(--lift-2)}
.p2d .example .link-btn::after{content:"";position:absolute;inset:0;z-index:1}
.p2d .example .example-actions a[download]{position:relative;z-index:2}
.p2d .example .link-btn .icon{transition:transform .2s}
.p2d .example:hover .link-btn .icon{transform:translateX(4px)}