@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --paper:#f2eee6;
  --paper-2:#fbf9f4;
  --ink:#141517;
  --muted:#77736d;
  --line:rgba(20,21,23,.24);
  --accent:#ff5b35;
  --accent-soft:#ffe4da;
  --dark:#17191d;
  --white:#fff;
  --max:1180px;
  --display:"Space Grotesk",Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{background:var(--paper);scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--display);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.library-wrap{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.library-nav-shell{position:sticky;top:0;z-index:20;background:rgba(242,238,230,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--ink)}
.library-nav{min-height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
.library-origin{width:max-content;display:flex;align-items:center;gap:11px}
.github-nav-link{width:36px;height:36px;display:grid;place-items:center;flex:0 0 auto;border:1.5px solid var(--ink);border-radius:50%;background:var(--paper-2);transition:transform .18s ease,background .18s ease,color .18s ease}
.github-nav-link:hover{transform:rotate(-7deg) scale(1.05);background:var(--ink);color:var(--white)}
.github-nav-link svg{width:19px;height:19px;fill:currentColor}
.library-brand{width:max-content;font-size:24px;font-weight:700;letter-spacing:-.065em}
.library-brand small{margin-left:7px;font-family:var(--mono);font-size:8px;letter-spacing:.08em}
.library-links{display:flex;align-items:center;justify-content:center;gap:24px;font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted)}
.library-links a:hover{color:var(--ink)}
.library-home-link{justify-self:end;font-family:var(--mono);font-size:9px;text-transform:uppercase;border-bottom:1px solid var(--ink)}
.page-hero{border-bottom:1px solid var(--ink)}
.page-hero-inner{padding:72px 0 56px;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:56px;align-items:end}
.eyebrow{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:18px}
.page-hero h1{margin:0;font-size:clamp(52px,8vw,104px);line-height:.9;letter-spacing:-.065em;max-width:930px}
.page-hero-copy{font-size:18px;line-height:1.5;max-width:440px}
.page-hero-copy p{margin:0 0 18px}
.open-pill{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--ink);border-radius:999px;font-family:var(--mono);font-size:9px;text-transform:uppercase;background:var(--paper-2)}
.open-pill::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.section{padding:56px 0;border-bottom:1px solid var(--ink)}
.section-head{display:grid;grid-template-columns:180px 1fr;gap:30px;margin-bottom:30px}
.section-id{font-family:var(--mono);font-size:10px;text-transform:uppercase;color:var(--muted);padding-top:7px}
.section h2{margin:0;font-size:clamp(30px,4vw,52px);line-height:1;letter-spacing:-.045em}
.section-intro{max-width:760px;font-size:18px;line-height:1.55;margin:18px 0 0}
.day-block+.day-block{margin-top:42px}
.day-label{font-family:var(--mono);font-size:10px;text-transform:uppercase;color:var(--muted);margin-bottom:13px}
.session-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.session-card{min-height:260px;padding:24px;display:flex;flex-direction:column;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--paper-2);transition:background .15s ease,transform .15s ease}
.session-card:hover{background:var(--accent-soft)}
.session-meta{display:flex;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:9px;color:var(--muted);text-transform:uppercase}
.session-card h3{font-size:25px;line-height:1.05;letter-spacing:-.035em;margin:40px 0 12px}
.session-card p{margin:0;color:#4f4c47;line-height:1.5;font-size:14px}
.card-link{margin-top:auto;padding-top:22px;font-family:var(--mono);font-size:9px;text-transform:uppercase}
.simple-grid{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.simple-card{padding:26px;min-height:180px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--paper-2)}
.simple-card h3{margin:0 0 10px;font-size:24px;letter-spacing:-.035em}
.simple-card p{margin:0;color:#595651;line-height:1.55}
.framework-line{display:grid;grid-template-columns:repeat(7,1fr);border:1px solid var(--ink);background:var(--paper-2)}
.framework-line span{padding:18px 10px;text-align:center;border-right:1px solid var(--ink);font-family:var(--mono);font-size:9px;text-transform:uppercase}
.framework-line span:last-child{border-right:0}
.lesson-hero{padding:54px 0 44px;border-bottom:1px solid var(--ink)}
.breadcrumbs{font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted);margin-bottom:28px}
.breadcrumbs a{text-decoration:underline;text-underline-offset:3px}
.lesson-kicker{display:flex;gap:12px;align-items:center;font-family:var(--mono);font-size:10px;text-transform:uppercase;color:var(--muted)}
.lesson-kicker .number{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:50%;color:var(--ink)}
.lesson-hero h1{margin:24px 0 18px;font-size:clamp(46px,7vw,86px);line-height:.94;letter-spacing:-.055em;max-width:1000px}
.lesson-promise{max-width:760px;font-size:20px;line-height:1.5;margin:0}
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:52px}
.lesson-main h2,.lesson-side h2{margin:0 0 20px;font-size:30px;letter-spacing:-.04em}
.lesson-main ul{margin:0;padding-left:20px}
.lesson-main li{margin:0 0 12px;line-height:1.55}
.material-list{display:grid;border-top:1px solid var(--ink)}
.material-item{padding:18px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:24px;align-items:center}
.material-item strong{font-size:16px}
.material-status{font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.keep-box{padding:24px;border:1px solid var(--ink);background:var(--accent-soft);margin-top:30px}
.keep-box .label{font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.keep-box p{margin:0;font-size:23px;line-height:1.3;letter-spacing:-.025em}
.class-flow{display:grid;gap:0;border-top:1px solid var(--ink)}
.flow-row{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
.flow-row span:first-child{font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted)}
.flow-row span:last-child{font-size:14px;line-height:1.45}
.lesson-nav{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink)}
.lesson-nav a{padding:25px 0;min-height:110px;display:flex;flex-direction:column;gap:7px}
.lesson-nav a:last-child{text-align:right;border-left:1px solid var(--ink);padding-left:24px}
.lesson-nav a:first-child{padding-right:24px}
.lesson-nav .label{font-family:var(--mono);font-size:9px;text-transform:uppercase;color:var(--muted)}
.lesson-nav strong{font-size:17px}
.library-footer{background:var(--dark);color:var(--white);padding:42px 0}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:40px}
.footer-grid strong{font-size:20px}
.footer-grid p{color:rgba(255,255,255,.62);max-width:360px;line-height:1.45}
.footer-links{display:flex;flex-direction:column;gap:9px;font-family:var(--mono);font-size:9px;text-transform:uppercase}
.footer-note{font-family:var(--mono);font-size:9px;line-height:1.7;color:rgba(255,255,255,.6);text-transform:uppercase}
.empty-state{padding:34px;border:1px dashed var(--ink);background:var(--paper-2);max-width:760px}
.empty-state h3{margin:0 0 8px;font-size:25px}
.empty-state p{margin:0;color:var(--muted);line-height:1.55}
@media(max-width:900px){
  .library-nav{grid-template-columns:1fr auto;gap:0 20px;padding-top:10px}
  .library-links{grid-column:1/-1;display:flex;justify-content:flex-start;gap:18px;min-height:42px;margin-top:10px;border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:thin}
  .page-hero-inner{grid-template-columns:1fr;gap:24px}
  .session-grid{grid-template-columns:repeat(2,1fr)}
  .lesson-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-note{grid-column:1/-1}
}
@media(max-width:620px){
  .library-wrap{width:min(calc(100% - 24px),var(--max))}
  .library-home-link{display:none}
  .library-nav{grid-template-columns:1fr;padding-top:9px}
  .library-links{gap:15px}
  .page-hero-inner{padding:48px 0 38px}
  .page-hero h1{font-size:clamp(44px,15vw,70px)}
  .section{padding:42px 0}.section-head{grid-template-columns:1fr;gap:8px}
  .session-grid,.simple-grid{grid-template-columns:1fr}
  .framework-line{grid-template-columns:1fr}
  .framework-line span{border-right:0;border-bottom:1px solid var(--ink);text-align:left}
  .framework-line span:last-child{border-bottom:0}
  .lesson-hero h1{font-size:clamp(42px,13vw,64px)}
  .lesson-nav{grid-template-columns:1fr}.lesson-nav a:last-child{border-left:0;border-top:1px solid var(--ink);text-align:left;padding-left:0}
  .footer-grid{grid-template-columns:1fr}
}
/* =========================================================
   COURSE MAP / SESSION FINDER
========================================================== */
.section-action{margin:18px 0 0;font-family:var(--mono);font-size:10px;text-transform:uppercase}
.section-action a{border-bottom:1px solid var(--ink)}
.problem-list{border-top:1px solid var(--ink)}
.problem-list a{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);transition:padding-left .15s ease,background .15s ease}
.problem-list a:hover{padding-left:12px;background:rgba(255,255,255,.28)}
.problem-list span{font-size:20px;letter-spacing:-.02em}
.problem-list strong{font-family:var(--mono);font-size:9px;text-transform:uppercase;white-space:nowrap}
.session-rail-shell{border-bottom:1px solid var(--ink);background:var(--paper-2)}
.session-rail{display:flex;align-items:stretch;overflow-x:auto;scrollbar-width:thin}
.session-rail-map,.session-rail-item{min-height:54px;display:flex;align-items:center;gap:8px;border-right:1px solid var(--line);padding:0 14px;white-space:nowrap;font-family:var(--mono);font-size:9px;text-transform:uppercase}
.session-rail-map{font-weight:600;padding-left:0}
.session-rail-item span{color:var(--muted)}
.session-rail-item strong{font-size:9px}
.session-rail-item.is-active{background:var(--accent);color:var(--ink)}
.session-rail-item.is-active span{color:var(--ink)}
.material-note{margin:16px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
@media(max-width:620px){
  .problem-list a{grid-template-columns:1fr;gap:8px;padding:17px 0}
  .problem-list a:hover{padding-left:0}
  .problem-list span{font-size:17px}
  .session-rail{width:100%;padding-right:12px}
  .session-rail-map,.session-rail-item{min-height:50px;padding:0 11px}
  .session-rail-map{padding-left:0}
}
@media print{
  :root{--paper:#fff;--paper-2:#fff;--ink:#000;--muted:#444}
  .library-nav-shell,.library-footer,.session-rail-shell,.lesson-nav{display:none!important}
  .library-wrap{width:100%;max-width:none}
  .lesson-hero,.section{padding:22px 0}
  .lesson-hero h1{font-size:38pt}
  .lesson-layout{grid-template-columns:1fr}
  .keep-box{break-inside:avoid;background:#fff}
  a{text-decoration:none}
}

/* =========================================================
   SESSION SYLLABUS DETAILS
========================================================== */
.delivery-note{margin:22px 0 0;max-width:760px;color:var(--muted);font-size:13px;line-height:1.55}
.bite-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.bite-card{min-height:150px;padding:22px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--paper-2);display:flex;flex-direction:column;gap:28px}
.bite-card span{font-family:var(--mono);font-size:9px;color:var(--muted);text-transform:uppercase}
.bite-card strong{font-size:20px;line-height:1.15;letter-spacing:-.025em}
.artifact-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--ink)}
.artifact-list li{padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.45}
@media(max-width:720px){.bite-grid{grid-template-columns:1fr}.bite-card{min-height:0}}

/* =========================================================
   OPEN WORKSHEETS
========================================================== */
.worksheet-section{background:var(--dark);color:var(--white)}
.worksheet-section .section-id,.worksheet-section .section-intro{color:rgba(255,255,255,.62)}
.worksheet-template{margin:0;padding:26px;border:1px solid rgba(255,255,255,.3);background:#0f1012;color:#f7f4ee;font-family:var(--mono);font-size:13px;line-height:1.75;white-space:pre-wrap;overflow-wrap:anywhere;overflow-x:auto}
.material-item[href]{transition:padding-left .15s ease,background .15s ease}
.material-item[href]:hover{padding-left:8px;background:rgba(255,255,255,.35)}
.material-live{color:var(--ink);font-weight:600}
@media print{
  .worksheet-section{background:#fff!important;color:#000!important}
  .worksheet-section .section-id,.worksheet-section .section-intro{color:#444!important}
  .worksheet-template{background:#fff!important;color:#000!important;border:1px solid #000;white-space:pre-wrap}
}

/* =========================================================
   ACCESSIBILITY
========================================================== */
.skip-link{position:fixed;left:12px;top:12px;z-index:1000;padding:10px 14px;background:var(--ink);color:var(--white);font-family:var(--mono);font-size:10px;text-transform:uppercase;transform:translateY(-160%);transition:transform .15s ease}
.skip-link:focus{transform:translateY(0)}

/* =========================================================
   OPEN PARTICIPANT WORKBOOK
========================================================== */
.simple-card-link{display:flex;flex-direction:column}
.simple-card-link .card-link{margin-top:auto}
.workbook-jump-shell{position:sticky;top:64px;z-index:15;background:var(--paper-2);border-bottom:1px solid var(--ink)}
.workbook-jump{display:flex;overflow-x:auto;scrollbar-width:thin}
.workbook-jump a{min-height:46px;display:flex;align-items:center;padding:0 13px;border-right:1px solid var(--line);font-family:var(--mono);font-size:9px;text-transform:uppercase;white-space:nowrap}
.workbook-jump a:first-child{padding-left:0}
.workbook-head{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:end;margin-bottom:24px}
.workbook-head h2{margin:0;font-size:clamp(28px,4vw,48px);letter-spacing:-.04em}
.workbook-head>a{font-family:var(--mono);font-size:9px;text-transform:uppercase;border-bottom:1px solid currentColor}
.workbook-template{max-width:920px}
.final-proof-section{background:var(--accent-soft)}
.final-proof-section .worksheet-template{background:var(--paper-2);color:var(--ink);border-color:var(--ink)}
.material-repair{color:#9a3f22}
@media(max-width:900px){.workbook-jump-shell{top:106px}}
@media(max-width:620px){
  .workbook-jump-shell{position:static}
  .workbook-head{grid-template-columns:1fr;align-items:start}
}
@media print{
  .workbook-jump-shell{display:none!important}
  .workbook-section{break-before:page}
  .workbook-section:first-of-type{break-before:auto}
  .workbook-head>a{display:none}
}


/* =========================================================
   EDITORIAL CARD SCHEMATICS
   Thin, inline SVG diagrams that belong to the page system.
========================================================== */
.card-schematic{
  width:100%;
  height:72px;
  display:flex;
  align-items:center;
  color:var(--ink);
  margin:28px 0 12px;
}
.card-schematic svg{
  width:100%;
  height:100%;
  max-width:220px;
  overflow:visible;
}
.card-schematic svg *{vector-effect:non-scaling-stroke}
.card-schematic svg{shape-rendering:geometricPrecision}
.card-schematic .s-line,
.card-schematic .s-muted,
.card-schematic .s-accent-stroke{
  fill:none;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.card-schematic .s-line{stroke:currentColor;stroke-width:1.6}
.card-schematic .s-muted{stroke:var(--muted);stroke-width:1.25;opacity:.46}
.card-schematic .s-dash{stroke-dasharray:4 4}
.card-schematic .s-accent-fill{fill:var(--accent);stroke:none}
.card-schematic .s-accent-stroke{stroke:var(--accent);stroke-width:1.25}
.simple-card .card-schematic{
  height:76px;
  margin:0 0 20px;
}
.session-card .card-schematic + h3{margin-top:12px}
.session-grid.single{grid-template-columns:1fr}
.session-grid.single .session-card{min-height:250px}
.session-grid.single .card-schematic{max-width:320px}
@media(max-width:620px){
  .card-schematic{height:64px;margin:22px 0 10px}
  .simple-card .card-schematic{height:56px}
}
@media print{
  .card-schematic .s-accent-fill{fill:#000}
}


/* =========================================================
   PAGE / WORKBOOK SCHEMATIC SIZING
   Same inline SVG language, scaled by context.
========================================================== */
.card-schematic-hero{
  height:132px;
  margin:26px 0 0;
}
.card-schematic-hero svg{max-width:290px}
.page-hero .card-schematic-hero{max-width:290px}
.lesson-hero .library-wrap{
  position:relative;
  padding-right:330px;
}
.lesson-hero .card-schematic-hero{
  position:absolute;
  right:0;
  top:52px;
  width:270px;
  height:132px;
  margin:0;
}
.lesson-hero.practice-hero .card-schematic-hero{
  position:static;
  width:220px;
  height:94px;
  margin:24px 0 0;
}
.card-schematic-workbook{
  width:150px;
  height:56px;
  margin:0 0 12px;
}
.card-schematic-workbook svg{max-width:140px}
@media(max-width:900px){
  .lesson-hero .library-wrap{padding-right:0}
  .lesson-hero .card-schematic-hero{
    position:static;
    width:220px;
    height:94px;
    margin-top:24px;
  }
}
@media(max-width:620px){
  .card-schematic-hero{height:92px}
  .page-hero .card-schematic-hero{max-width:220px}
  .card-schematic-workbook{width:110px;height:42px}
}


/* =========================================================
   FIELD GUIDE V3
   Editorial lab-notebook system for guides, labs and notes.
========================================================== */
:root{
  --fg-rail-height:52px;
  --fg-soft:rgba(255,255,255,.34);
  --fg-wash:rgba(20,21,23,.035);
  --fg-strong-line:rgba(20,21,23,.72);
  --fg-shadow:7px 7px 0 rgba(20,21,23,.1);
}
.field-guide-page{position:relative}
.field-guide-page .lesson-hero{
  background:var(--paper-2);
  padding-top:68px;
}
.field-guide-page .lesson-hero .library-wrap{position:relative}
.field-guide-page .lesson-kicker{
  width:max-content;
  max-width:100%;
  padding:8px 10px;
  border:1px solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  letter-spacing:.045em;
}
.field-guide-page .lesson-promise{max-width:820px}
.field-guide-page .lesson-hero.practice-hero .card-schematic-hero{
  position:absolute;
  right:0;
  top:74px;
  width:250px;
  height:112px;
  margin:0;
}
.field-guide-page .learner-guide-section{
  background:var(--paper);
  border-bottom:1px solid var(--ink);
}
.field-guide-page .learner-guide-grid{box-shadow:4px 4px 0 rgba(20,21,23,.06)}
.field-guide-page .section{border-bottom-color:var(--line)}
.field-guide-page .section-head{margin-bottom:34px}
.field-guide-page .section-id{
  color:var(--ink);
  font-weight:600;
}
.field-guide-page .session-grid{
  border:0;
  gap:14px;
}
.field-guide-page .session-card{
  border:1px solid var(--ink);
  min-height:250px;
  position:relative;
  overflow:hidden;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease;
}
.field-guide-page a.session-card:hover{
  transform:translate(-3px,-3px);
  box-shadow:var(--fg-shadow);
}
.field-guide-page .session-card::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:4px;
  background:var(--ink);
  transform:scaleX(.22);
  transform-origin:left;
  transition:transform .18s ease,background .18s ease;
}
.field-guide-page a.session-card:hover::before{
  transform:scaleX(1);
  background:var(--accent);
}
.field-guide-page .session-card h3{margin-top:32px}
.field-guide-page .keep-box{
  border-width:1.5px;
  box-shadow:4px 4px 0 rgba(20,21,23,.08);
}
.field-guide-page .practice-body>pre,
.field-guide-page .practice-body pre[data-copy-block]{
  padding:22px;
  border:1px solid var(--ink);
  background:#111316;
  color:#f7f4ee;
}
.field-guide-page .practice-body table{
  background:var(--paper-2);
}
.field-guide-page .practice-body th{
  background:var(--paper);
  border-color:var(--fg-strong-line);
}
.field-guide-page .practice-body td{
  border-color:var(--line);
}
.field-guide-page .delivery-note{
  width:min(calc(100% - 40px),var(--max));
  max-width:var(--max);
  margin:18px auto 0;
  padding:12px 14px;
  border-left:3px solid var(--accent);
  background:rgba(255,255,255,.28);
  color:#514d48;
}

/* Field Guide global rail */
.fg-rail-shell{
  position:sticky;
  top:64px;
  z-index:18;
  min-height:var(--fg-rail-height);
  background:rgba(251,249,244,.96);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--ink);
}
.fg-rail{
  min-height:var(--fg-rail-height);
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:stretch;
}
.fg-rail-home{
  display:flex;
  align-items:center;
  gap:9px;
  padding-right:16px;
  border-right:1px solid var(--line);
  font-family:var(--mono);
  font-size:9px;
  text-transform:uppercase;
  white-space:nowrap;
}
.fg-rail-home-mark{
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  border:1px solid var(--ink);
  background:var(--ink);
  color:var(--paper-2);
  font-size:8px;
  font-weight:600;
}
.fg-rail-home.is-active .fg-rail-home-mark{background:var(--accent);color:var(--ink)}
.fg-rail-track{
  min-width:0;
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  scrollbar-width:none;
}
.fg-rail-track::-webkit-scrollbar{display:none}
.fg-rail-stage{
  display:flex;
  align-items:center;
  padding:0 10px 0 16px;
  font-family:var(--mono);
  font-size:8px;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--muted);
  white-space:nowrap;
  border-left:1px solid var(--line);
}
.fg-rail-stage:first-child{border-left:0}
.fg-rail-link{
  position:relative;
  display:flex;
  align-items:center;
  padding:0 11px;
  font-family:var(--mono);
  font-size:9px;
  text-transform:uppercase;
  white-space:nowrap;
}
.fg-rail-link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:8px;
  height:2px;
  background:transparent;
}
.fg-rail-link:hover::after{background:var(--line)}
.fg-rail-link.is-active{font-weight:600}
.fg-rail-link.is-active::after{background:var(--accent)}
.fg-rail-tools{
  display:flex;
  align-items:stretch;
  border-left:1px solid var(--line);
}
.fg-rail-tools a{
  display:flex;
  align-items:center;
  padding:0 10px;
  font-family:var(--mono);
  font-size:8px;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.fg-rail-tools a:hover,.fg-rail-tools a.is-active{color:var(--ink);background:var(--accent-soft)}

/* Field-guide badges and status */
.fg-status-strip{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:22px 0 0;
}
.fg-badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:30px;
  padding:6px 9px;
  border:1px solid var(--ink);
  background:var(--paper-2);
  font-family:var(--mono);
  font-size:8px;
  line-height:1.1;
  text-transform:uppercase;
  letter-spacing:.045em;
}
.fg-badge::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--muted);
}
.fg-badge.is-designed{border-style:dashed}
.fg-badge.is-designed::before{background:transparent;border:1px solid var(--ink)}
.fg-badge.is-pending{background:var(--dark);color:var(--white);border-color:var(--dark)}
.fg-badge.is-pending::before{background:var(--accent)}
.fg-badge.is-live::before,.fg-badge.is-observed::before{background:var(--accent)}
.fg-badge.is-neutral::before{display:none}

/* Field-guide journey map */
.fg-journey-map{
  display:grid;
  grid-template-columns:1fr 1.15fr 1fr;
  border:1px solid var(--ink);
  background:var(--paper-2);
}
.fg-journey-stage{
  min-width:0;
  padding:24px;
  border-right:1px solid var(--ink);
}
.fg-journey-stage:last-child{border-right:0}
.fg-journey-stage>span{
  display:block;
  margin-bottom:20px;
  font-family:var(--mono);
  font-size:9px;
  text-transform:uppercase;
  color:var(--muted);
}
.fg-journey-stage h3{
  margin:0 0 8px;
  font-size:clamp(24px,3vw,36px);
  letter-spacing:-.04em;
}
.fg-journey-stage p{margin:0;color:#514d48;line-height:1.5}
.fg-journey-links{
  display:flex;
  flex-wrap:wrap;
  gap:7px;
  margin-top:20px;
}
.fg-journey-links a{
  padding:7px 9px;
  border:1px solid var(--ink);
  font:500 9px/1.1 var(--mono);
  text-transform:uppercase;
}
.fg-journey-links a:hover{background:var(--accent-soft)}

/* Episode page */
.fg-episode-page .lesson-hero{border-bottom:0}
.fg-recording-card{
  display:grid;
  grid-template-columns:128px minmax(0,1fr) auto;
  align-items:center;
  gap:24px;
  padding:24px;
  border:1px solid var(--ink);
  background:var(--dark);
  color:var(--white);
  box-shadow:7px 7px 0 rgba(20,21,23,.13);
}
.fg-recording-mark{
  width:112px;
  aspect-ratio:16/10;
  display:grid;
  place-items:center;
  border:1px solid rgba(255,255,255,.45);
  background:#0f1012;
  font:600 11px/1 var(--mono);
  letter-spacing:.08em;
  text-transform:uppercase;
}
.fg-recording-mark::before{
  content:"";
  width:11px;
  height:11px;
  border-radius:50%;
  background:var(--accent);
  margin-right:7px;
}
.fg-recording-mark span{display:flex;align-items:center}
.fg-recording-copy h2{
  margin:0 0 7px;
  font-size:28px;
  letter-spacing:-.035em;
}
.fg-recording-copy p{margin:0;color:rgba(255,255,255,.66);font-size:14px;line-height:1.5}
.fg-recording-state{
  padding:9px 11px;
  border:1px dashed rgba(255,255,255,.58);
  font:500 9px/1.2 var(--mono);
  text-transform:uppercase;
  white-space:nowrap;
}
.fg-episode-nav-shell{
  position:sticky;
  top:calc(64px + var(--fg-rail-height));
  z-index:17;
  background:var(--paper);
  border-bottom:1px solid var(--ink);
}
.fg-episode-nav{
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  scrollbar-width:none;
}
.fg-episode-nav::-webkit-scrollbar{display:none}
.fg-episode-nav a{
  min-height:46px;
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 13px;
  border-right:1px solid var(--line);
  white-space:nowrap;
  font-family:var(--mono);
  font-size:8px;
  text-transform:uppercase;
  color:var(--muted);
}
.fg-episode-nav a span{
  display:grid;
  place-items:center;
  min-width:20px;
  height:20px;
  border:1px solid var(--line);
  color:var(--ink);
}
.fg-episode-nav a:hover,.fg-episode-nav a.is-active{background:var(--accent-soft);color:var(--ink)}
.fg-episode-nav a.is-active span{background:var(--accent);border-color:var(--ink)}
.lab-step{position:relative;scroll-margin-top:172px}
.lab-step .library-wrap{position:relative}
.lab-step-kicker{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:20px;
  font-family:var(--mono);
  font-size:9px;
  line-height:1;
  text-transform:uppercase;
  color:var(--muted);
}
.lab-step-kicker span:first-child{
  display:grid;
  place-items:center;
  width:32px;
  height:32px;
  border:1px solid var(--ink);
  color:var(--ink);
  background:var(--paper-2);
}
.lab-step.is-baseline{background:var(--paper-2)}
.lab-step.is-hypothesis{background:var(--accent-soft)}
.lab-step.is-intervention{background:var(--paper)}
.lab-step.is-measure{background:var(--paper-2)}
.lab-step.is-break{background:#eee7dc}
.lab-step.is-keep{background:var(--dark);color:var(--white)}
.lab-step.is-keep .practice-body p,
.lab-step.is-keep .practice-body li{color:rgba(255,255,255,.74)}
.lab-step.is-keep .lab-step-kicker{color:rgba(255,255,255,.56)}
.lab-step.is-keep .lab-step-kicker span:first-child{border-color:rgba(255,255,255,.5);background:transparent;color:var(--white)}
.lab-step.is-keep a{color:var(--white)}
.lab-step.is-next{background:var(--accent-soft)}
.lab-step .practice-body>h2:first-of-type{
  margin-top:0;
  font-size:clamp(30px,4vw,48px);
  letter-spacing:-.045em;
}
.fg-score-table th:first-child,.fg-score-table td:first-child{min-width:240px}
.fg-score-table td:not(:first-child){
  text-align:center;
  font-family:var(--mono);
  font-size:13px;
}
.fg-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.fg-split-card{
  padding:22px;
  border:1px solid var(--ink);
  background:var(--paper-2);
}
.fg-split-card.is-positive{border-top:4px solid var(--accent)}
.fg-split-card.is-boundary{border-top:4px solid var(--ink)}
.fg-split-card h3{margin:0 0 10px!important}
.fg-split-card p{margin:0!important}
.fg-checklist{
  list-style:none;
  padding:0!important;
  margin:20px 0!important;
  counter-reset:fg-check;
}
.fg-checklist li{
  counter-increment:fg-check;
  display:grid;
  grid-template-columns:34px 1fr;
  gap:12px;
  align-items:start;
  padding:13px 0;
  margin:0!important;
  border-bottom:1px solid var(--line);
}
.fg-checklist li::before{
  content:counter(fg-check,decimal-leading-zero);
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  border:1px solid var(--ink);
  font:500 8px/1 var(--mono);
}

/* Lab Method */
.fg-method-flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--ink);
  border-left:1px solid var(--ink);
}
.fg-method-step{
  min-height:176px;
  padding:18px;
  border-right:1px solid var(--ink);
  border-bottom:1px solid var(--ink);
  background:var(--paper-2);
}
.fg-method-step>span{
  display:grid;
  place-items:center;
  width:30px;
  height:30px;
  margin-bottom:24px;
  border:1px solid var(--ink);
  background:var(--paper);
  font:500 8px/1 var(--mono);
}
.fg-method-step h3{margin:0 0 8px!important;font-size:20px!important}
.fg-method-step p{margin:0!important;font-size:14px;color:#514d48}
.fg-method-step.is-turn{background:var(--accent-soft)}
.fg-method-page .session-card{min-height:190px}

/* Resource library */
.field-guide-resource-page .practice-body{max-width:100%}
.fg-resource-jump-shell{
  position:sticky;
  top:calc(64px + var(--fg-rail-height));
  z-index:16;
  background:var(--paper);
  border-bottom:1px solid var(--ink);
}
.fg-resource-jump{
  display:flex;
  overflow-x:auto;
  scrollbar-width:none;
}
.fg-resource-jump::-webkit-scrollbar{display:none}
.fg-resource-jump a{
  min-height:44px;
  display:flex;
  align-items:center;
  padding:0 13px;
  border-right:1px solid var(--line);
  font:500 8px/1 var(--mono);
  text-transform:uppercase;
  white-space:nowrap;
}
.fg-resource-jump a:hover{background:var(--accent-soft)}
.fg-resource-band{scroll-margin-top:166px}
.fg-resource-band .practice-body>h2:first-child{margin-top:0}
.field-guide-resource-page pre[data-copy-block]{
  margin-bottom:0;
}
.field-guide-resource-page .case-copy-tools{
  margin:0 0 28px;
  border:1px solid var(--ink);
  border-top:0;
  background:var(--paper-2);
}
.field-guide-resource-page .case-copy-tools button{
  background:var(--ink);
  color:var(--white);
}
.field-guide-resource-page .case-copy-tools button:hover{
  background:var(--accent);
  color:var(--ink);
}

/* Field note */
.fg-note-page .lesson-hero{background:#ede7dc}
.fg-note-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:22px;
}
.fg-note-page .practice-body{max-width:820px}
.fg-note-page blockquote{
  font-size:21px;
  letter-spacing:-.02em;
}

/* dark "keep" section refinements */
.field-guide-page .worksheet-section .section-head h2{color:var(--white)}
.field-guide-page .worksheet-section .workbook-editor label{color:var(--white)}
.field-guide-page .worksheet-section .workbook-help,
.field-guide-page .worksheet-section .workbook-status{color:rgba(255,255,255,.68)}
.field-guide-page .worksheet-section .workbook-tools button{
  border-color:rgba(255,255,255,.55);
  background:transparent;
  color:var(--white);
}
.field-guide-page .worksheet-section .workbook-tools button:hover{
  background:var(--accent);
  color:var(--ink);
  border-color:var(--accent);
}

@media(max-width:1050px){
  .fg-rail{grid-template-columns:auto minmax(0,1fr)}
  .fg-rail-tools{display:none}
  .fg-journey-map{grid-template-columns:1fr}
  .fg-journey-stage{border-right:0;border-bottom:1px solid var(--ink)}
  .fg-journey-stage:last-child{border-bottom:0}
}
@media(max-width:900px){
  .fg-rail-shell{top:106px}
  .fg-episode-nav-shell,.fg-resource-jump-shell{top:calc(106px + var(--fg-rail-height))}
  .lab-step,.fg-resource-band{scroll-margin-top:214px}
  .field-guide-page .lesson-hero.practice-hero .card-schematic-hero{
    position:static;
    width:220px;
    height:94px;
    margin:24px 0 0;
  }
  .fg-method-flow{grid-template-columns:repeat(2,1fr)}
  .fg-recording-card{grid-template-columns:100px 1fr}
  .fg-recording-mark{width:92px}
  .fg-recording-state{grid-column:1/-1;width:max-content}
}
@media(max-width:680px){
  :root{--fg-rail-height:48px}
  .fg-rail-shell{top:104px}
  .fg-rail{grid-template-columns:1fr}
  .fg-rail-home{display:none}
  .fg-rail-stage{padding-left:12px}
  .fg-rail-link{padding:0 9px}
  .fg-episode-nav-shell,.fg-resource-jump-shell{
    position:static;
  }
  .lab-step,.fg-resource-band{scroll-margin-top:120px}
  .field-guide-page .lesson-hero{padding-top:48px}
  .field-guide-page .lesson-kicker{width:auto;line-height:1.4}
  .field-guide-page .session-grid{gap:10px}
  .field-guide-page .session-card{min-height:0}
  .fg-recording-card{grid-template-columns:1fr;box-shadow:4px 4px 0 rgba(20,21,23,.13)}
  .fg-recording-mark{width:116px}
  .fg-method-flow{grid-template-columns:1fr}
  .fg-method-step{min-height:0}
  .fg-split{grid-template-columns:1fr}
  .fg-status-strip{gap:6px}
  .fg-badge{font-size:7.5px}
}
@media print{
  .fg-rail-shell,.fg-episode-nav-shell,.fg-resource-jump-shell{display:none!important}
  .field-guide-page .session-card{box-shadow:none!important;transform:none!important}
  .fg-recording-card{background:#fff;color:#000;box-shadow:none}
  .fg-recording-copy p{color:#333}
  .fg-recording-mark,.fg-recording-state{border-color:#000;color:#000;background:#fff}
  .lab-step.is-keep{background:#fff!important;color:#000!important}
  .lab-step.is-keep .practice-body p,.lab-step.is-keep .practice-body li{color:#000}
}