/* InSTEMAI / Field Notes
   Original scientific editorial artwork and a UMN-inspired, non-official palette.
   No University seals, marks, or implied institutional endorsement. */
:root{
  --maroon:#7A0019;
  --maroon-deep:#570014;
  --maroon-ink:#39000D;
  --gold:#FFCC33;
  --gold-soft:#FFF5CD;
  --rose:#FAEDF0;
  --paper:#FBFBF8;
  --paper-2:#F1F1EB;
  --ink:#151718;
  --ink-2:#3A4042;
  --muted:#62696A;
  --line:#D7DAD5;
  --line-strong:#BFC5C0;
  --shadow:0 22px 55px rgba(44,23,27,.12);
  --shadow-float:0 22px 48px rgba(44,23,27,.17);
}
body{background:var(--paper)}
.site-header{background:rgba(251,251,248,.96);border-bottom:1px solid #E7E5E0}
.site-header.scrolled{background:rgba(251,251,248,.99)}
.brand-wordmark{font-family:var(--sans);font-size:24px;letter-spacing:-.055em;font-weight:750}
.button-primary{box-shadow:0 10px 27px rgba(122,0,25,.16)}
.button-primary:hover{box-shadow:0 12px 30px rgba(122,0,25,.25)}
.button:focus-visible,.field-card:focus-visible,.menu-button:focus-visible,.starter-option:focus-visible{outline:3px solid #A56D00;outline-offset:4px}
.section-kicker,.hero-kicker{letter-spacing:.055em;text-transform:none;font-size:13px}
.hero{padding-top:54px;background:linear-gradient(180deg,#fff 0%,#F8F9F5 100%)}
.hero::before{content:"";position:absolute;top:15%;right:4%;width:38vw;aspect-ratio:1;background:repeating-linear-gradient(0deg,transparent 0 33px,rgba(122,0,25,.045) 34px 35px),repeating-linear-gradient(90deg,transparent 0 33px,rgba(122,0,25,.045) 34px 35px);mask-image:linear-gradient(90deg,transparent,#000 60%,transparent);opacity:.55;pointer-events:none}
.hero-ambient{display:none}
.hero-grid{grid-template-columns:minmax(0,.95fr) minmax(520px,1.05fr);gap:34px;min-height:595px;padding-bottom:42px}
.hero-copy{max-width:590px}
.hero-copy h1{font-size:clamp(45px,4.3vw,61px);line-height:1.015;letter-spacing:-.045em}
.hero-copy h1 .hero-line{white-space:normal}
.hero-copy h1 em{font-weight:500}
.hero-lede{max-width:515px;margin-top:20px;font-size:16px;line-height:1.58}
.hero-actions{margin-top:22px}
.hero-trust{grid-column:1/-1;margin-top:2px;padding-top:21px}
.hero-trust span{font-size:13px;font-weight:500;white-space:normal;line-height:1.35}
.field-trust-icon{display:block;flex:0 0 26px;width:26px;height:26px;color:var(--maroon)}
.hero-trust span:nth-child(2) .field-trust-icon{color:#865500}
.hero-collage{height:520px}
.hero-photo-wrap{left:107px;top:25px;width:372px;height:440px;border-radius:8px;box-shadow:0 25px 68px rgba(34,24,25,.22)}
.hero-photo-wrap::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.32);border-radius:inherit;pointer-events:none}
.pathway-card{left:4px;top:60px;width:186px;border-radius:8px}
.pathway-card small{font-size:10px}
.pathway-card strong{font-family:var(--sans);font-size:12px}
.companion-card{right:0;bottom:15px;width:226px;border-radius:9px;padding:16px;box-shadow:0 22px 50px rgba(33,19,24,.19)}
.companion-card p,.companion-card button{font-size:11px}
.companion-card button{min-height:32px}
.wind-card{right:6px;top:18px;width:138px;height:159px}
.leaf-card{right:77px;top:174px}
.sketch-card{right:-8px;top:198px}
.note-left{left:3px;bottom:86px}
.note-right{display:none}
.brush-stroke{opacity:.5}
body.hero-ready .hero-copy h1 .hero-line:nth-child(5){transition-delay:.31s}
/* Real STEM challenge choices form an editorial diptych, not a feature-card catalog. */
.field-gallery{position:relative;padding:98px 0 112px;background:#F0F2ED}
.field-gallery::before{content:"";position:absolute;left:0;top:0;width:100%;height:5px;background:linear-gradient(90deg,#7A0019 0 73%,#FFCC33 73% 100%)}
.field-gallery-heading{display:grid;grid-template-columns:1fr minmax(250px,370px);gap:58px;align-items:end;margin-bottom:35px}
.field-gallery-heading h2{margin:0;max-width:760px;font-family:var(--serif);font-size:clamp(39px,4vw,57px);font-weight:550;line-height:1.05;letter-spacing:-.035em}
.field-gallery-heading>p{margin:0 0 6px;color:var(--ink-2);font-size:16px;line-height:1.55}
.field-gallery-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:15px;min-height:540px}
.field-gallery-side{display:grid;grid-template-rows:1fr 1fr;gap:15px;min-width:0}
.field-card{position:relative;display:block;overflow:hidden;width:100%;min-width:0;min-height:250px;text-align:left;border:1px solid transparent;border-radius:5px;background:#20282A;cursor:pointer;isolation:isolate;padding:0;box-shadow:0 14px 37px rgba(20,29,26,.1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.field-card-water{min-height:540px}
.field-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .72s cubic-bezier(.2,.7,.2,1);z-index:-2}
.field-card::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(0,0,0,0) 27%,rgba(9,16,18,.18) 47%,rgba(7,12,16,.74) 100%);pointer-events:none}
.field-card:hover{transform:translateY(-3px);box-shadow:0 23px 48px rgba(20,29,26,.2)}
.field-card:hover img,.field-card:focus-visible img{transform:scale(1.045)}
.field-card-copy{position:absolute;left:30px;right:25px;bottom:27px;color:#fff;display:flex;flex-direction:column;gap:12px}
.field-card-copy small{font-size:13px;font-weight:700;letter-spacing:.015em;color:#FFE18B}
.field-card-copy strong{font-family:var(--sans);font-weight:650;letter-spacing:-.045em;font-size:clamp(28px,3.15vw,44px);line-height:1.06}
.field-card-copy>span{font-size:13px;font-weight:600;display:flex;align-items:center;gap:13px}
.field-card-copy>span>span{color:var(--gold);font-size:22px;line-height:1}
.field-gallery-side .field-card-copy{left:25px;bottom:19px;gap:7px}
.field-gallery-side .field-card-copy strong{font-size:clamp(24px,2.15vw,32px)}
.field-gallery-side .field-card-copy small{font-size:12px}
.field-gallery-side .field-card-copy>span{font-size:12px}
/* Keep the Design Atlas as the single scroll-based signature interaction. */
.atlas-section{background:#220F1A;color:#F8F6F1}
.atlas-section::before{display:none}
.atlas-intro .section-kicker,.atlas-mark{color:#FFD55A}
.atlas-window{border-radius:10px}
.atlas-window::after{display:none}
.atlas-window-bar{border-top:3px solid var(--maroon)}
.atlas-main>h3{font-size:clamp(32px,3vw,42px)}
.atlas-decision-grid button.active{border-color:var(--maroon)}
.atlas-companion{background:#FDFCF9}
.atlas-companion p{font-size:12px}
.atlas-decision-grid strong{font-family:var(--sans);font-size:14px;line-height:1.28}
.atlas-route button{font-size:12px}
.atlas-status{font-size:12px}
.atlas-decision-grid span{font-size:12px}
/* The project selector now demonstrates an illustration as well as the design thinking. */
.starter-lab-section{background:#fff;padding:105px 0}
.starter-copy h2{font-size:clamp(39px,4vw,55px)}
.starter-option{border-radius:4px}
.starter-option strong{font-family:var(--sans);font-weight:650;font-size:16px}
.starter-option.active{border-color:rgba(122,0,25,.28);box-shadow:inset 3px 0 0 var(--maroon),0 9px 27px rgba(24,26,24,.04)}
.starter-stage{border-radius:11px;background:#FBFBF8;min-height:0;box-shadow:0 30px 80px rgba(43,34,32,.12)}
.starter-art-panel{position:relative;isolation:isolate;overflow:hidden;aspect-ratio:3.5/1;max-height:182px;margin:20px 0 15px;border-radius:5px;background:#143B4B}
.starter-art-panel img{width:100%;height:100%;object-fit:cover;object-position:center;transition:opacity .2s ease}
.starter-art-overlay{position:absolute;bottom:12px;left:16px;padding:6px 9px;color:#fff;font-size:11px;font-weight:650;background:rgba(27,34,40,.6);border-radius:3px;backdrop-filter:blur(4px)}
.starter-stage.is-switching .starter-art-panel img{opacity:.25}
.starter-signals span{font-size:12px}
.starter-companion small{font-size:12px}
.starter-launch{font-size:14px}
.starter-option small{font-size:12px}
/* Research teaser: avoid research instruments in public-facing language. */
.research-teaser{background:#F7F8F4}
.research-copy .text-link{font-weight:650}
/* The significance page is public and communicates rationale, not study mechanics. */
.significance-hero{background:linear-gradient(125deg,#570014 0,#7A0019 58%,#5B1227 100%);padding:94px 0}
.significance-hero::after{display:none}
.significance-hero-grid{grid-template-columns:.9fr 1.1fr;gap:50px}
.significance-copy h1{font-size:clamp(57px,5.3vw,78px)}
.significance-copy .section-kicker{color:#FFD55A}
.significance-copy>p:not(.section-kicker){max-width:580px;font-size:16px;line-height:1.65}
.significance-visual{min-height:0}
.significance-figure{margin:0;position:relative}
.significance-figure img{display:block;width:100%;height:auto;border-radius:9px;border:1px solid rgba(255,204,51,.28);box-shadow:0 34px 70px rgba(27,3,14,.25);aspect-ratio:920/620;object-fit:cover}
.significance-figure figcaption{margin-top:12px;color:#F5E8D8;font-size:13px;letter-spacing:.025em}
.significance-point>span{color:var(--maroon);font-family:var(--sans);font-weight:750;font-size:14px}
.significance-point h3{font-family:var(--sans);font-size:clamp(22px,2.25vw,28px);font-weight:650}
.significance-field{background:#201019}
.significance-field::before{opacity:.5}
/* About page: show a concrete design situation beside the manifesto. */
.about-study-preview{position:relative;margin:30px 0 0;overflow:hidden;border-radius:5px;background:#284A3B}
.about-study-preview img{width:100%;aspect-ratio:1.7/1;object-fit:cover}
.about-study-preview figcaption{position:absolute;bottom:0;left:0;right:0;padding:11px 16px;color:#fff;font-size:13px;font-weight:650;background:linear-gradient(transparent,rgba(10,22,20,.8))}
.page-hero-copy h1{letter-spacing:-.04em}
.page-visual{border-radius:5px}
/* Remaining surfaces: deliberate gold in dark sections, clean neutral daylight elsewhere. */
.closing-card{background:var(--maroon);border-radius:6px;border-top:4px solid var(--gold)}
.closing-card span{color:#FDE3AC}
.site-footer{background:#F7F8F4}
.signature{color:#574C4E}
@media(max-width:1180px){
  .hero-grid{grid-template-columns:1fr;gap:23px}
  .hero-copy{max-width:760px}
  .hero-copy h1{max-width:780px}
  .hero-collage{margin:0 auto}
  .hero-trust{max-width:none}
  .field-gallery-grid{min-height:480px}
  .field-card-water{min-height:480px}
}
@media(max-width:900px){
  .hero{padding-top:46px}
  .hero-grid{padding-bottom:34px}
  .field-gallery-heading{grid-template-columns:1fr;gap:15px}
  .field-gallery{padding:73px 0 79px}
  .starter-lab-section{padding:78px 0}
  .significance-hero-grid{grid-template-columns:1fr;gap:40px}
  .significance-figure img{max-height:480px}
}
@media(max-width:640px){
  .hero::before{display:none}
  .hero-copy h1{font-size:clamp(43px,10.7vw,55px);line-height:1.015}
  .hero-collage{height:415px;max-width:390px}
  .hero-photo-wrap{left:69px;top:47px;width:260px;height:313px}
  .pathway-card{left:0;top:69px;width:160px}
  .companion-card{right:0;bottom:0;width:190px;padding:11px}
  .wind-card{right:2px;top:35px;width:99px;height:123px}
  .leaf-card{right:45px;top:152px;width:78px;height:90px}
  .sketch-card{right:0;top:198px;width:82px;height:90px}
  .hero-trust{grid-template-columns:repeat(2,minmax(0,1fr));gap:0}
  .hero-trust span,.hero-trust span:nth-child(even){padding:12px 10px;border-left:0;border-top:1px solid var(--line);font-size:12px}
  .hero-trust span:nth-child(2n){border-left:1px solid var(--line)}
  .hero-trust span:nth-child(-n+2){border-top:0}
  .field-gallery-grid{display:block}
  .field-card-water{height:375px;min-height:0}
  .field-gallery-side{display:grid;grid-template-columns:1fr;gap:12px;margin-top:12px}
  .field-gallery-side .field-card{height:260px;min-height:0}
  .field-card-copy{left:20px;right:16px;bottom:22px;gap:8px}
  .field-card-copy strong{font-size:34px}
  .field-gallery-side .field-card-copy strong{font-size:29px}
  .starter-art-panel{aspect-ratio:2.45/1;max-height:170px}
  .significance-hero{padding:74px 0}
  .significance-copy h1{font-size:clamp(51px,12.8vw,68px)}
  .significance-figure figcaption{font-size:12px}
  .significance-point h3{font-size:24px}
}
@media(prefers-reduced-motion:reduce){
  .field-card,.field-card img,.starter-art-panel img{transition:none!important;transform:none!important}
}