/* Portfolio theme - taken from the edtech memo (Source Serif 4, ink on paper, hairline rules).
   One page: collapsible sections with a one-sentence teaser, after scotthanford.com. */

:root{
  color-scheme:light;
  --paper:#FFFFFF;
  --tint:#F7F7F5;
  --ink:#0B0B0A;
  --ink-2:#262624;
  --muted:#5E5E58;
  --faint:#8C8C85;
  --rule:#E3E3DE;
  --rule-mid:#C9C9C2;
  --serif:"Source Serif 4",Georgia,"Times New Roman",Times,serif;
  --measure:780px;
  --bar:56px;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--bar) + 20px)}
html,body{margin:0}
img,video{max-width:100%}

body{
  background:var(--paper);color:var(--ink);
  font-family:var(--serif);font-size:18px;line-height:1.62;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
::selection{background:#E9E9E3}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.18em;text-decoration-color:var(--rule-mid)}
a:hover{text-decoration-color:var(--ink)}
a:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
sup{font-size:.68em;line-height:0}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.wrap{max-width:calc(var(--measure) + 64px);margin:0 auto;padding:0 32px 96px}

/* ---------------- sticky top bar ---------------- */
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.93);backdrop-filter:saturate(1.2) blur(8px);
  border-bottom:1px solid var(--rule);
}
.topbar .inner{
  max-width:1440px;margin:0 auto;padding:0 32px;height:var(--bar);
  display:flex;align-items:center;gap:24px;
}
.topbar a{text-decoration:none}
.topbar .home{font-size:17px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);white-space:nowrap}
.topbar nav{margin-left:auto;display:flex;gap:24px}
.topbar nav a{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);white-space:nowrap;transition:color .15s ease}
.topbar nav a:hover{color:var(--ink)}

/* ---------------- intro ---------------- */
.hero{padding-top:96px}
.intro{
  font-size:clamp(1.45rem,1rem + 1.5vw,2.1rem);line-height:1.32;letter-spacing:-.012em;
  text-wrap:pretty;margin:0;
}
.intro + .intro{margin-top:.7em}

/* ---------------- expanders: shared ---------------- */
details > summary{cursor:pointer;list-style:none}
details > summary::-webkit-details-marker{display:none}
details > summary{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:24px}
details > summary > *{grid-column:1}
details > summary::after{
  content:"+";grid-column:2;grid-row:1;align-self:start;
  color:var(--faint);font-weight:300;line-height:1;
}
details[open] > summary::after{content:"\2212"}
details > summary:hover .t{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.16em;text-decoration-color:var(--rule-mid)}
.t{margin:0}
.s{margin:10px 0 0;color:var(--muted)}

/* ---------------- top-level sections (Pathways, Other Projects): always open ---------------- */
.section{margin-top:88px;border-top:1px solid var(--ink)}
.section-head{padding:26px 0 22px}
.section-head .t{font-size:clamp(2rem,1.4rem + 2vw,2.9rem);font-weight:500;line-height:1.1;letter-spacing:-.02em}
.section-head .s{font-size:1.15rem;line-height:1.55;color:var(--ink-2);max-width:40em;margin-top:14px}

/* body text */
.section-body p{margin:0 0 20px}
.section-body p:last-child{margin-bottom:0}
.section-body strong{font-weight:600}
.section-body ul{margin:0 0 20px;padding-left:1.15em}
.section-body ul:last-child{margin-bottom:0}
.section-body li{margin:0 0 10px;padding-left:.2em}
.section-body li::marker{color:var(--faint)}
.section-body li ul{margin:10px 0 0}
.section-body li li{color:var(--ink-2)}

/* ---------------- expanders: sub-sections, projects, case studies ---------------- */
.fold{border-top:1px solid var(--rule)}
.fold:last-child{border-bottom:1px solid var(--rule)}
.fold > summary{padding:18px 0}
.fold > summary .t{font-size:1.3rem;font-weight:600;line-height:1.3;letter-spacing:-.008em}
.fold > summary::after{font-size:26px}
.fold > summary .s{line-height:1.55}
.fold-body{padding:2px 0 30px}
.fold-body .link{margin-bottom:18px}
.shot{display:block;margin-top:24px;border:1px solid var(--rule)}
/* case studies sit one level down, inside Case Studies */
.fold.cs > summary .t{font-size:1.12rem}
.fold.cs > summary::after{font-size:20px}
.fold.sub > .fold-body > .fold.cs:last-child{border-bottom:0}

/* case study rows */
.cs-row{
  display:grid;grid-template-columns:96px minmax(0,1fr);column-gap:28px;
  padding-top:14px;margin-top:22px;border-top:1px solid var(--rule);
}
.cs-row:first-child{margin-top:6px}
.cs-row > h3{margin:0;padding-top:.5em;font-size:10.5px;font-weight:600;letter-spacing:.15em;text-transform:uppercase}
.cs-row.key p{font-size:1.1rem;line-height:1.56}

/* ---------------- press ---------------- */
.section-body ul.press{list-style:none;padding:0}
.press li{padding:0;margin-bottom:14px}
.press video{display:block;width:100%;max-width:520px;height:auto;aspect-ratio:16/9;margin:12px 0 10px;background:var(--ink)}

/* ---------------- contact ---------------- */
.contact{margin-top:88px}
.contact h2{font-size:clamp(2rem,1.4rem + 2vw,2.9rem);font-weight:500;line-height:1.1;letter-spacing:-.02em;margin:0 0 18px}
.contact p{margin:0 0 8px}
.contact a{text-decoration-color:var(--ink);text-decoration-thickness:1px}
.contact a:hover{color:var(--muted)}

/* ---------------- responsive ---------------- */
@media (max-width:620px){
  body{font-size:17px}
  .wrap{padding-inline:20px}
  .topbar .inner{padding-inline:16px;gap:12px}
  .topbar .home{font-size:13.5px;letter-spacing:.05em}
  .topbar nav{gap:12px}
  .topbar nav a{font-size:10px;letter-spacing:.08em}
  .hero{padding-top:56px}
  .section,.contact{margin-top:64px}
  .cs-row{display:block}
  .cs-row > h3{padding:0 0 8px}
}
@media (max-width:380px){
  .topbar .inner{gap:10px}
  .topbar .home{font-size:12px;letter-spacing:.03em}
  .topbar nav{gap:9px}
  .topbar nav a{letter-spacing:.04em}
}
@media (prefers-reduced-motion:reduce){ *{transition-duration:.001ms!important} }