/* ML @ Columbia design tokens
   paper/ink are cool neutrals biased toward the accent; Columbia blue is the wash. */
:root{
  --paper:#EEF2F7;
  --surface:#FFFFFF;
  --ink:#0D141F;
  --ink-2:#4A5A6E;
  --ink-3:#7A8798;
  --line:#D6DEE8;
  --line-soft:#E4EAF1;
  --accent:#1C63B8;
  --wash:#B9D9EB;
  --wash-soft:#DCEBF4;
  --halo:rgba(28,99,184,.07);
  --shadow:0 1px 2px rgba(13,20,31,.04),0 12px 32px -18px rgba(13,20,31,.28);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --paper:#090E15;
    --surface:#111A25;
    --ink:#E7EDF5;
    --ink-2:#94A4B8;
    --ink-3:#6C7C90;
    --line:#1F2C3B;
    --line-soft:#182432;
    --accent:#7CB8F2;
    --wash:#24425C;
    --wash-soft:#16293A;
    --halo:rgba(124,184,242,.10);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 36px -20px rgba(0,0,0,.8);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#090E15;
  --surface:#111A25;
  --ink:#E7EDF5;
  --ink-2:#94A4B8;
  --ink-3:#6C7C90;
  --line:#1F2C3B;
  --line-soft:#182432;
  --accent:#7CB8F2;
  --wash:#24425C;
  --wash-soft:#16293A;
  --halo:rgba(124,184,242,.10);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 36px -20px rgba(0,0,0,.8);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Public Sans","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
[hidden]{display:none!important}
h1,h2,h3{
  font-family:Newsreader,"Iowan Old Style",Georgia,serif;
  font-weight:400;
  text-wrap:balance;
  margin:0;
  letter-spacing:-.012em;
}
p{margin:0}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--surface);color:var(--ink);padding:10px 16px;z-index:100}
.skip:focus{left:12px;top:12px}

.wrap{max-width:1140px;margin-inline:auto;padding-inline:clamp(20px,5vw,56px)}
.mono{
  font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:11px;
  letter-spacing:.11em;
  text-transform:uppercase;
}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-in{display:flex;align-items:center;gap:20px;height:62px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-right:auto}
.brand svg{display:block;color:var(--accent)}
.brand b{font-weight:600;font-size:15px;letter-spacing:-.01em}
.brand span{color:var(--ink-3);font-weight:400}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  text-decoration:none;color:var(--ink-2);font-size:14px;font-weight:500;
  padding:7px 11px;border-radius:6px;
}
.nav-links a:hover{color:var(--ink);background:var(--halo)}
.nav-links a[aria-current="page"]{color:var(--ink)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;text-decoration:none;
  padding:9px 16px;border-radius:999px;border:1px solid transparent;
  transition:transform .15s ease,background .15s ease,border-color .15s ease;
}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink-3);background:var(--surface)}
.btn .arw{transition:transform .18s ease}
.btn:hover .arw{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{position:relative;padding-block:clamp(56px,9vw,104px) clamp(48px,7vw,84px);overflow:hidden}
.hero.tight{padding-block:clamp(48px,7vw,84px) clamp(32px,4vw,48px)}
#emb{
  position:absolute;inset:0;width:100%;height:100%;
  opacity:.8;cursor:crosshair;
}
.hero .wrap{position:relative}
.eyebrow{color:var(--ink-3);margin-bottom:22px}
.eyebrow i{font-style:normal;color:var(--accent)}
h1{font-size:clamp(2.5rem,6.4vw,4.75rem);line-height:1.03;max-width:16ch;font-weight:300}
h1.sub{font-size:clamp(2.1rem,5vw,3.9rem);max-width:19ch}
h1 em{font-style:italic;color:var(--accent)}
.lede{margin-top:26px;max-width:56ch;font-size:clamp(1.02rem,1.5vw,1.16rem);color:var(--ink-2);line-height:1.62}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* ---------- sections ---------- */
.sec{padding-block:clamp(56px,8vw,92px)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.sec-head h2{font-size:clamp(1.65rem,3.1vw,2.35rem);max-width:20ch}
.sec-kicker{color:var(--ink-3)}
.sec-head a{color:var(--accent);text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap}
.sec-head a:hover{text-decoration:underline;text-underline-offset:3px}
.prose{max-width:62ch;color:var(--ink-2);font-size:1.03rem}
.prose + .prose{margin-top:16px}


/* ---------- placements ---------- */
.placements-list{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 24px;
  list-style:none;margin:0;padding:0;border-top:1px solid var(--line);
}
.placements-list li{display:flex;align-items:center;justify-content:center;padding:28px 12px;border-bottom:1px solid var(--line-soft)}
.placement-wordmark{display:block;width:100%;max-width:160px;height:64px;object-fit:contain}
.sec[id]{scroll-margin-top:110px}
.partnership-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:32px}
.partnership-grid article{border-top:1px solid var(--line);padding-top:22px}
.partnership-grid h3{font-size:1.4rem;margin-bottom:12px}
.partnership-grid p{color:var(--ink-2);font-size:.95rem}
.join-panel{background:var(--wash-soft);border:1px solid var(--line);border-radius:12px;padding:clamp(24px,5vw,48px);display:flex;flex-direction:column;align-items:flex-start;gap:22px}
.join-panel h2{font-size:clamp(1.8rem,4vw,2.7rem)}
@media (max-width:900px){
  .nav .nav-in{height:auto;min-height:62px;flex-wrap:wrap;padding-block:12px;gap:8px}
  .nav-links{flex-wrap:wrap}
}
@media (max-width:620px){
  .placements-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}
  .placements-list li{padding:24px 12px}
  .placement-wordmark{height:52px}
  .partnership-grid{grid-template-columns:1fr}
  .sec[id]{scroll-margin-top:160px}
}

/* ---------- featured cards ---------- */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:10px;
  overflow:hidden;display:flex;flex-direction:column;text-decoration:none;
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.card:hover{border-color:var(--line);transform:translateY(-2px);box-shadow:var(--shadow)}
.card .art{aspect-ratio:16/10;background:var(--wash-soft);color:var(--accent);display:block;border-bottom:1px solid var(--line-soft)}
.card .art svg{display:block;width:100%;height:100%}
.card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.card h3{font-size:1.3rem}
.card p{font-size:.93rem;color:var(--ink-2);line-height:1.55;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.tag{
  font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.04em;
  color:var(--ink-3);border:1px solid var(--line);border-radius:4px;padding:2px 6px;
}

/* ---------- project index ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.filters button{
  font:inherit;font-size:13px;font-weight:500;cursor:pointer;
  background:transparent;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;
  transition:color .15s ease,border-color .15s ease,background .15s ease;
}
.filters button:hover{color:var(--ink);border-color:var(--ink-3)}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.group{margin-top:44px}
.group-label{display:flex;align-items:center;gap:14px;color:var(--ink-3);padding-bottom:12px;border-bottom:1px solid var(--line)}
.group-label .count{margin-left:auto;font-variant-numeric:tabular-nums}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.rows{display:flex;flex-direction:column}
.row{
  display:grid;grid-template-columns:52px minmax(0,1fr) minmax(0,1.5fr) minmax(0,1fr);
  align-items:start;gap:20px;padding:16px 8px;border-bottom:1px solid var(--line-soft);
}
.row .thumb{width:52px;height:52px;border-radius:7px;background:var(--wash-soft);color:var(--accent);border:1px solid var(--line-soft);overflow:hidden}
.row .thumb svg{display:block;width:100%;height:100%}
.row .nm{font-family:Newsreader,Georgia,serif;font-size:1.18rem;line-height:1.25}
.row .ds{color:var(--ink-2);font-size:.93rem;line-height:1.5}
.row .meta{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.row .tags{margin-top:0}


/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);margin-top:clamp(56px,8vw,96px);padding-block:52px 40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:34px}
.foot-grid h4{margin:0 0 14px;color:var(--ink-3);font-weight:400;font-size:11px;letter-spacing:.11em;text-transform:uppercase;font-family:"JetBrains Mono",monospace}
.foot-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.foot-grid a{color:var(--ink-2);text-decoration:none;font-size:14px}
.foot-grid a:hover{color:var(--accent)}
.foot-blurb{color:var(--ink-3);font-size:14px;max-width:34ch;line-height:1.55}
.colophon{margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:var(--ink-3);font-size:12.5px}
.colophon p{max-width:58ch;line-height:1.5}

@media (max-width:1000px){
  .feat{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .row{grid-template-columns:44px minmax(0,1fr);gap:16px;row-gap:10px}
  .row .thumb{width:44px;height:44px}
  .row .ds{grid-column:2}
  .row .meta{grid-column:2;align-items:flex-start;flex-direction:row;flex-wrap:wrap}
}
@media (max-width:620px){
  .feat{grid-template-columns:1fr}
  .nav-in{height:56px;gap:12px}
  .nav-links{gap:2px}
  .nav-links a{padding:7px 9px;font-size:13.5px}
  .brand b{font-size:14px}
  .sec{padding-block:clamp(44px,9vw,64px)}
  .sec-head{margin-bottom:28px}
  .group-label{flex-wrap:wrap;gap:8px 14px}
  .group{margin-top:34px}
  .colophon{flex-direction:column;gap:12px}
}
@media (max-width:460px){
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-blurb{max-width:none}
  .cta-row{flex-direction:column;align-items:stretch}
  .cta-row .btn{justify-content:center}
  .row{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:14px 0}
  .row .thumb{width:40px;height:40px}
  .filters button{padding:6px 11px;font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* partner / provenance line: above the title on cards, under it in the index */
.org{display:block;color:var(--ink-3);font-size:10.5px;letter-spacing:.09em;line-height:1.4}
.card .body .org{margin-bottom:-5px}
.row .nm .org{margin-top:5px}
.row .nm{align-self:start}

/* nothing may scroll the page horizontally */
.nm,.ds,.org,.tag{overflow-wrap:break-word}
.row{min-width:0}
.row > *{min-width:0}

/* Keep original wordmark colors legible in dark mode. */
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .placements-list li{background:#fff;border-radius:8px}}
:root[data-theme="dark"] .placements-list li{background:#fff;border-radius:8px}

.hero:not(.tight){min-height:620px;display:flex;align-items:center}
.hero:not(.tight) .wrap{width:100%;pointer-events:none}
.hero:not(.tight) .wrap a{pointer-events:auto}
.hero:not(.tight) h1{font-family:"Public Sans",Arial,sans-serif;font-weight:600;letter-spacing:-.055em;font-size:clamp(2.8rem,6.2vw,4.8rem);max-width:18ch}
.hero:not(.tight) h1 em{font-style:normal}
.card .art img{display:block;width:100%;height:100%;object-fit:cover}
@media(max-width:620px){.hero:not(.tight){min-height:540px}}

.row .thumb img{display:block;width:100%;height:100%;padding:5px}

.hero-hint{color:var(--ink-3);margin-top:22px;font-size:9px;letter-spacing:.06em}

/* Balance the education copy against a dedicated heading column. */
.about-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:clamp(24px,5vw,64px);align-items:start}
.about-layout .sec-head{margin-bottom:0}
.about-copy{min-width:0}
.about-copy .prose{max-width:none}
.about-copy .prose + .prose{margin-top:24px}
@media(max-width:620px){.about-layout{grid-template-columns:1fr;gap:24px}}