/* MERENIC — one light theme for every page. */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&display=swap');

:root{
  --bg:#fbfbf8; --surface:#f1f3ee; --ink:#182521; --text:#34443a; --muted:#627067;
  --line:#dbe0d8; --accent:#ad502a; --accent-soft:#f6e9e2;
  --serif:Georgia,'Times New Roman',serif; --sans:'DM Sans',Arial,sans-serif;
  --page:1200px; --read:760px; --gutter:clamp(16px,5vw,56px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
h1,h2,h3{color:var(--ink);font-weight:400;margin:0}
h1,h2{font-family:var(--serif);letter-spacing:-.02em}
h3{font-family:var(--sans);font-weight:500}
em{font-style:normal;color:var(--accent)}
strong{color:var(--ink);font-weight:600}
.muted{color:var(--muted)}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;background:var(--ink);color:#fff;padding:8px 12px;z-index:99}
.wrap{max-width:var(--page);margin:0 auto;padding:0 var(--gutter)}

/* Header: the only navigation */
header{position:sticky;top:0;z-index:50;height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 max(var(--gutter),calc((100% - var(--page))/2 + var(--gutter)));background:rgba(251,251,248,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:24px;width:auto}
.wordmark{font-weight:600;letter-spacing:.18em;color:var(--ink);font-size:16px}
nav{display:flex;gap:32px}
nav a{font-size:14px;color:var(--muted);padding:6px 0;border-bottom:1.5px solid transparent}
nav a:hover{color:var(--ink)}
nav a[aria-current=page]{color:var(--ink);border-bottom-color:var(--accent)}
.menu-button{display:none;font:inherit;font-size:14px;color:var(--ink);background:none;border:1px solid var(--line);padding:6px 12px;border-radius:6px;cursor:pointer}

/* Shared labels and links */
.eyebrow,.section-label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lead,.standfirst{font-size:19px;line-height:1.6;color:var(--text)}
.lead a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.quiet-link,.position-links a{display:inline-block;font-size:14px;color:var(--accent);border-bottom:1px solid currentColor;padding-bottom:2px}
.quiet-link:hover,.position-links a:hover{color:var(--ink)}
.position-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:24px}

/* Home */
.institutional-home{max-width:var(--page);margin:0 auto;padding:0 var(--gutter)}
.position{padding:56px 0 0}
.position-meta,.position-foot{display:flex;justify-content:space-between;gap:16px;font-size:12px;color:var(--muted)}
.position-meta{text-transform:uppercase;letter-spacing:.08em}
.position-heading{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;padding:56px 0}
.position h1{font-size:clamp(36px,4.2vw,56px);line-height:1.1}
.position-summary p{margin:0 0 16px;font-size:17px}
.position-foot{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}
.editorial-section{display:grid;grid-template-columns:220px 1fr;gap:48px;padding:72px 0;border-bottom:1px solid var(--line)}
.editorial-copy h2,.study-heading h2,.research-status h2{font-size:clamp(28px,3vw,40px);line-height:1.2;margin-bottom:24px}
.editorial-copy .standfirst{max-width:820px;margin:0 0 28px}
.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.two-columns p{margin:0 0 18px}
.two-columns h3{font-size:17px;margin:0 0 12px}
.sandbox-contract{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.sandbox-contract p{margin:8px 0 0;font-size:14px;color:var(--muted)}
.environment-study{padding:64px 0 0}
.study-heading{display:grid;grid-template-columns:220px 1fr;gap:48px;margin-bottom:28px}
.study-heading p{margin:0;max-width:820px}
.environment-study figure{margin:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.environment-study figcaption{display:flex;justify-content:space-between;gap:16px;padding:12px 16px;font-size:13px;color:var(--muted);background:var(--bg);border-top:1px solid var(--line)}
.environment-study figcaption a{color:var(--accent)}
.protocol-flow{list-style:none;margin:32px 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.protocol-flow li{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line)}
.protocol-flow li>span{font-size:12px;color:var(--accent);padding-top:3px}
.protocol-flow strong{font-weight:500}
.protocol-flow p{margin:4px 0 0;font-size:14px;color:var(--muted)}
.research-status{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin:72px 0;padding:48px;background:var(--surface);border:1px solid var(--line);border-radius:8px}
.research-status .section-label{display:block;margin-bottom:16px}
.research-status p{margin:0}

/* Reading pages: Research, Protocol, Governance, Identity */
.doc-hero{border-bottom:1px solid var(--line);padding:64px 0 48px}
.doc-hero .wrap>*,.doc-layout{max-width:var(--read);margin-left:auto;margin-right:auto}
.doc-hero h1{font-size:clamp(36px,4.5vw,56px);line-height:1.1;margin:16px auto 20px}
.doc-hero .lead{margin-top:0}
.doc-layout{padding:48px 0 32px}
.prose section{padding-bottom:48px;margin-bottom:48px;border-bottom:1px solid var(--line)}
.prose section:last-child{border-bottom:0}
.prose h2{font-size:32px;line-height:1.2;margin-bottom:20px}
.prose h3{font-size:20px;margin:36px 0 12px}
.prose p,.prose li{font-size:17px;line-height:1.8}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose sup{font-size:12px;line-height:0}
.prose sup a{text-decoration:none}
.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:18px 20px;font-size:13px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--ink)}
.prose code{font-size:.9em}
.tag{display:inline-block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0 0 16px}
.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:6px;padding:20px 24px;margin:24px 0}
.callout p{margin:8px 0 0}
.status{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:4px}
.table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:6px}
table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.55}
th{text-align:left;font-weight:600;color:var(--ink);background:var(--surface);font-size:13px}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
.prose td a{text-decoration:none}
.ref-list{padding-left:22px}
.ref-list li{margin-bottom:12px}
.ref-list span{display:block;font-size:14px;color:var(--muted)}
.download-list{display:flex;flex-direction:column;margin:20px 0}
.download-list a{padding:14px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}
.download-list a:last-child{border-bottom:1px solid var(--line)}
.download-list a:hover{color:var(--accent)}
.logo-display{display:flex;align-items:center;gap:16px;padding:40px;margin:24px 0;background:var(--surface);border:1px solid var(--line);border-radius:8px}
.logo-display img{height:48px;width:auto}
.logo-display .wordmark{font-size:28px}

/* Footer */
footer{border-top:1px solid var(--line);padding:32px 0;margin-top:24px;font-size:14px}
.footer-top,.footer-bottom{display:flex;justify-content:space-between;gap:24px}
.footer-top{padding-bottom:20px}
.footer-top p{margin:4px 0 0}
.footer-bottom{padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.footer-bottom a:hover{color:var(--accent)}
.footer-top a{color:var(--ink);border-bottom:1px solid var(--line)}
.footer-top a:hover{color:var(--accent);border-color:currentColor}
.footer-note{max-width:360px;margin:0;text-align:right}
.position-foot a{color:var(--ink);border-bottom:1px solid var(--line)}
.position-foot a:hover{color:var(--accent)}

/* Homepage: Edition 01 note */
.edition-note{margin:24px 0 0;padding:20px 0 0;border-top:1px solid var(--line)}
.edition-note strong{display:block;font-weight:500;margin:6px 0 8px}

/* How It Works */
.page-body{padding-bottom:24px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:48px auto 0;max-width:960px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.compare>div{background:var(--bg);padding:24px 28px}
.compare>div:last-child{background:var(--surface)}
.compare p{margin:10px 0 0}
.hiw-section{max-width:960px;margin:0 auto;padding:72px 0 0}
.section-heading{margin-bottom:32px}
.section-heading h2{font-size:clamp(28px,3vw,38px);line-height:1.2;margin:10px 0 0}
.section-heading p{margin:12px 0 0;max-width:680px;color:var(--muted)}
.phase{display:grid;grid-template-columns:180px 1fr;gap:32px;padding:28px 0;border-top:1px solid var(--line)}
.phase-label{padding-top:6px}
.steps{list-style:none;margin:0;padding:0}
.step{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:18px 0}
.step+.step{border-top:1px dashed var(--line)}
.step-num{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding-top:4px}
.step-num span{display:block;font-family:var(--serif);font-size:28px;letter-spacing:0;color:var(--accent);line-height:1;margin-bottom:6px}
.step-body h3{font-size:19px;margin:0 0 8px}
.step-body p,.step-body li{margin:0 0 8px;font-size:16px}
.step-body ul{margin:4px 0 8px;padding-left:20px;columns:2;column-gap:32px}
.step-record{display:inline-block;margin-top:6px;font-size:13px;color:var(--accent);background:var(--accent-soft);padding:3px 10px;border-radius:4px}
.step-record:before{content:'Record · ';color:var(--muted)}
.step-record:hover{color:var(--ink)}
.walk-figure{margin:0 0 32px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.walk-figure figcaption{padding:10px 16px;font-size:13px;color:var(--muted);background:var(--bg);border-top:1px solid var(--line)}
.walkthrough{border-left:2px solid var(--line);margin-left:6px}
.walk-row{position:relative;display:grid;grid-template-columns:180px 1fr;gap:24px;padding:14px 0 14px 28px}
.walk-row:before{content:'';position:absolute;left:-7px;top:22px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--muted)}
.walk-row p{margin:0}
.walk-label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);padding-top:4px}
.walk-row.is-contradiction:before{border-color:var(--accent);background:var(--accent)}
.walk-row.is-contradiction .walk-label{color:var(--accent)}
.closing{padding-bottom:24px}

/* About: people */
.person{display:grid;grid-template-columns:220px 1fr;gap:32px;padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:8px}
.person-meta h3{font-family:var(--serif);font-size:22px;margin:0 0 8px}
.person-meta span{display:block;font-size:14px;color:var(--muted);line-height:1.5}
.person-meta a{display:inline-block;margin-top:12px;font-size:14px;color:var(--accent);text-decoration:none}
.person-bio p{margin:0 0 12px}
.person-bio p:last-child{margin:0}
.advisors{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:24px 0}
.advisor{display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:8px}
.advisor-photo{flex:none;width:56px;height:56px;border-radius:50%;object-fit:cover;background:var(--surface);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--muted)}
.advisor h3{font-size:17px;margin:0 0 4px}
.advisor p{margin:0;font-size:14px}
.fine-print{font-size:13px;color:var(--muted)}

/* Phones and small tablets */
@media(max-width:800px){
  header{height:64px}
  .menu-button{display:block}
  nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px var(--gutter)}
  nav.open{display:flex}
  nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
  nav a:last-child{border-bottom:0}
  nav a[aria-current=page]{color:var(--accent);border-bottom-color:var(--line)}
  .position-heading,.editorial-section,.study-heading,.two-columns,.sandbox-contract,.protocol-flow,.research-status{grid-template-columns:1fr;gap:24px}
  .position-heading{padding:36px 0}
  .editorial-section{padding:48px 0}
  .research-status{padding:28px}
  .position-meta,.position-foot,.footer-top,.footer-bottom,.environment-study figcaption{flex-direction:column;gap:6px}
  .doc-hero{padding:40px 0 32px}
  .prose h2{font-size:28px}
  h1 br,h2 br{display:none}
  .prose p,.prose li{font-size:16px}
  .footer-note{text-align:left}
  .compare,.phase,.step,.walk-row,.person{grid-template-columns:1fr;gap:8px}
  .compare{margin-top:32px;gap:1px}
  .hiw-section{padding-top:48px}
  .phase{padding:20px 0}
  .step{padding:14px 0}
  .step-num span{display:inline;font-size:22px;margin:0 8px 0 0}
  .step-body ul{columns:1}
  .walk-row{padding-left:22px}
  .person{padding:20px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{header,footer{display:none}}