:root{
  --ink:#13232a;
  --muted:#617078;
  --paper:#f7f8f6;
  --white:#fff;
  --line:#d7dedf;
  --teal:#146b72;
  --navy:#0d3442;
  --gold:#bd7b24;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.65;
}
a{color:inherit}
.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}
.site-header{
  background:rgba(247,248,246,.96);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:20;
  backdrop-filter:blur(10px);
}
.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{text-decoration:none;display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:1.2rem;font-weight:700}
.mark{width:34px;height:34px;border:2px solid var(--teal);display:grid;place-items:center;color:var(--teal);font:700 .7rem/1 system-ui;letter-spacing:.08em}
.links{display:flex;gap:26px;align-items:center}
.links a{text-decoration:none;font-size:.91rem;font-weight:650;color:#3c4c53}
.links a:hover,.links a[aria-current=page]{color:var(--teal)}

.hero{
  padding:96px 0 76px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(135deg,#f7f8f6 52%,#e4eeed);
}
.hero-reframed{padding:92px 0 70px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:74px;align-items:end}
.eyebrow{color:var(--teal);font-size:.78rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;margin:0 0 16px}
.hero h1,.page-head h1{font:500 clamp(2.55rem,6.2vw,5.35rem)/1 Georgia,serif;letter-spacing:-.045em;margin:0;max-width:980px}
.hero p{font-size:1.2rem;color:#415159;max-width:760px;margin:30px 0 34px}
.hero .lead{font-size:1.24rem}
.field-note{background:#fff;border:1px solid var(--line);border-top:4px solid var(--gold);padding:28px;box-shadow:0 22px 55px rgba(13,52,66,.08)}
.field-note span{display:block;color:var(--gold);font-size:.74rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.field-note p{font:500 1.25rem/1.35 Georgia,serif;color:var(--ink);margin:0}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--navy);padding:12px 17px;text-decoration:none;font-weight:750;font-size:.9rem}
.button.primary{background:var(--navy);color:#fff}
.button.quiet{border-color:var(--line);background:rgba(255,255,255,.55);color:var(--navy)}
.button.inverse{border-color:rgba(255,255,255,.45);background:transparent;color:#fff}
.button:hover{transform:translateY(-1px)}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:800;text-decoration:none}
.text-link:hover{color:var(--navy)}
.text-link.inverse{color:#fff}
.text-link.inverse:hover{color:#79c5c7}

.stakes{padding:74px 0}
.section-kicker{display:grid;grid-template-columns:.82fr 1.18fr;gap:72px;align-items:start;margin-bottom:30px}
.section-kicker h2{font:500 clamp(2rem,4vw,3.25rem)/1.08 Georgia,serif;margin:0}
.purpose{padding:74px 0 0}
.purpose-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.purpose-grid article{background:#fff;border:1px solid var(--line);padding:30px;box-shadow:0 18px 45px rgba(13,52,66,.05)}
.purpose-grid span{display:block;color:var(--gold);font-size:.75rem;font-weight:850;letter-spacing:.14em;margin-bottom:16px}
.purpose-grid h3{font:500 1.45rem/1.2 Georgia,serif;margin:0 0 12px}
.purpose-grid p{color:#526168;margin:0}
.stakes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stakes-grid article{background:#fff;padding:30px;min-height:220px}
.stakes-grid h3{font:500 1.45rem/1.2 Georgia,serif;margin:0 0 12px}
.stakes-grid p{color:#526168;margin:0}

.affected{background:#102f3a;color:#fff;padding:70px 0}
.affected-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px}
.affected h2{font:500 clamp(2rem,4.5vw,3.4rem)/1.08 Georgia,serif;margin:0}
.affected-list p{font-size:1.08rem;color:#d2dee0;margin:0 0 20px}
.affected-list p:last-child{margin-bottom:0}

.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:72px;padding:78px 0}
.intro-grid h2,.section-head h2{font:500 clamp(2rem,4vw,3rem)/1.08 Georgia,serif;margin:0}
.intro-grid p{color:#526168}
.path{border-top:3px solid var(--navy)}
.path a{display:grid;grid-template-columns:40px 1fr 25px;gap:12px;padding:18px 0;border-bottom:1px solid var(--line);text-decoration:none}
.path small{color:var(--teal);font-weight:800}
.path strong{font-family:Georgia,serif}

.starting-points{padding:0 0 78px}
.starting-points .section-kicker>div>p{color:var(--muted);max-width:720px;margin:16px 0 0}
.start-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.start-grid article{background:var(--white);border:1px solid var(--line);border-top:4px solid var(--teal);padding:28px;display:flex;flex-direction:column;min-height:280px}
.start-grid article:nth-child(3){border-top-color:var(--gold)}
.start-grid span{color:var(--teal);font-size:.74rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}
.start-grid article:nth-child(3) span{color:var(--gold)}
.start-grid h3{font:500 1.4rem/1.25 Georgia,serif;margin:14px 0 12px}
.start-grid p{color:var(--muted);font-size:.94rem;margin:0 0 24px}
.start-grid a{color:var(--teal);font-size:.88rem;font-weight:800;text-decoration:none;margin-top:auto}
.start-grid a:hover{color:var(--navy)}

.feature{background:var(--navy);color:#fff;padding:68px 0}
.feature-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:end}
.feature h2{font:500 clamp(2.3rem,5vw,4rem)/1 Georgia,serif;margin:0}
.feature p{color:#c9d6d9;font-size:1.08rem}
.feature .button{border-color:#fff}

.themes{padding:74px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
.section-head p{max-width:520px;color:var(--muted)}
.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.theme{background:var(--white);padding:28px;min-height:190px}
.theme b{display:block;color:var(--gold);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
.theme h3{font:500 1.35rem/1.2 Georgia,serif;margin:0 0 10px}
.theme p{font-size:.91rem;color:var(--muted);margin:0}

.page-head{padding:80px 0 54px;border-bottom:1px solid var(--line)}
.page-head p{max-width:720px;color:var(--muted);font-size:1.1rem}
.page-head .page-action{margin-top:24px}
.page-head .archive-note{font-size:.9rem;margin:14px 0 0;color:var(--muted)}
.series{padding:62px 0 80px}
.theme-block{margin-bottom:66px}
.theme-title{display:grid;grid-template-columns:1fr 2fr;gap:30px;border-top:3px solid var(--navy);padding-top:18px;margin-bottom:18px}
.theme-title h2{font:500 1.8rem/1.2 Georgia,serif;margin:0}
.theme-title p{margin:0;color:var(--muted)}
.papers{background:var(--line);display:grid;gap:1px;border:1px solid var(--line)}
.paper{background:var(--white);display:grid;grid-template-columns:120px 1fr auto;gap:25px;align-items:start;padding:26px}
.paper-id{color:var(--teal);font-weight:850;letter-spacing:.06em}
.paper h3{font:500 1.35rem/1.25 Georgia,serif;margin:0 0 8px}
.summary{color:#7a878c;font-size:.9rem;margin:0}
.paper-link{color:var(--teal);text-decoration:none;font-size:.85rem;font-weight:800;border-bottom:1px solid}
.paper-link:hover{color:var(--navy)}

.framework-layout{padding:72px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:80px}
.framework-layout h2{font:500 2rem/1.15 Georgia,serif}
.framework-layout p{color:#526168}
.note{background:#e9f0ef;border-left:4px solid var(--teal);padding:22px 24px}
.model{border-top:3px solid var(--navy)}
.model div{padding:17px 0;border-bottom:1px solid var(--line)}
.model b{display:block;font-family:Georgia,serif;font-size:1.08rem}
.model span{font-size:.88rem;color:var(--muted)}

.lifecycle-section{background:#102f3a;color:#fff;padding:72px 0}
.lifecycle-section .eyebrow{color:#79c5c7}
.lifecycle-section .section-kicker{margin-bottom:38px}
.lifecycle-section .section-kicker p:last-child{color:#c9d6d9;margin:14px 0 0;max-width:720px}
.lifecycle{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.25);border-left:1px solid rgba(255,255,255,.25)}
.lifecycle li{position:relative;min-height:150px;padding:22px;border-right:1px solid rgba(255,255,255,.25);border-bottom:1px solid rgba(255,255,255,.25)}
.lifecycle li:not(:nth-child(4n))::after{content:"→";position:absolute;right:-9px;top:18px;z-index:2;background:#102f3a;color:#79c5c7;padding:0 2px}
.lifecycle span{display:block;color:#79c5c7;font-size:.7rem;font-weight:850;letter-spacing:.14em;margin-bottom:12px}
.lifecycle b{display:block;font:500 1.12rem/1.2 Georgia,serif;margin-bottom:8px}
.lifecycle small{display:block;color:#b8c8cb;font-size:.79rem;line-height:1.4}
.cross-cutting{margin:24px 0 0;color:#c9d6d9;text-align:center;font-size:.92rem;letter-spacing:.02em}

.validation{padding:74px 0;display:grid;grid-template-columns:.85fr 1.15fr;gap:72px}
.validation h2{font:500 clamp(2rem,4vw,3.15rem)/1.08 Georgia,serif;margin:0}
.validation-copy p{color:#526168;margin:0 0 18px}
.validation-copy p:last-child{margin-bottom:0}

.about{padding:72px 0;display:grid;grid-template-columns:1fr 1fr;gap:80px}
.about h2{font:500 2rem/1.15 Georgia,serif}
.about p{color:#526168}
.principles{counter-reset:item}
.principles div{counter-increment:item;border-top:1px solid var(--line);padding:19px 0;display:grid;grid-template-columns:42px 1fr}
.principles div:before{content:"0" counter(item);color:var(--teal);font-weight:800}
.relationship-note{margin-top:30px;background:#e9f0ef;border-left:4px solid var(--teal);padding:22px 24px}
.relationship-note p{margin:8px 0 0}
.author-profile{margin-top:32px;border-top:1px solid var(--line);padding-top:22px}
.author-profile h3{font:500 1.35rem/1.2 Georgia,serif;margin:0 0 10px}
.author-profile p{margin:0 0 14px}
.author-links{display:flex;gap:18px;flex-wrap:wrap}
.review-status{margin-top:32px;border-top:3px solid var(--navy);padding-top:18px}
.review-status h3{font:500 1.35rem/1.2 Georgia,serif;margin:0 0 10px}
.review-status p{margin:0}

.footer{border-top:1px solid var(--line);padding:34px 0;color:#65737a;font-size:.86rem}
.footer .wrap{display:flex;justify-content:space-between;gap:20px}
.skip{position:absolute;left:-999px}
.skip:focus{left:10px;top:10px;background:#fff;padding:10px;z-index:99}

@media(max-width:780px){
  .nav{align-items:flex-start;padding:16px 0;flex-direction:column;gap:12px}
  .links{width:100%;gap:16px;overflow-x:auto;padding-bottom:4px}
  .links a{white-space:nowrap;font-size:.82rem}
  .hero{padding:58px 0}
  .hero-grid,.section-kicker,.affected-grid,.intro-grid,.feature-grid,.framework-layout,.about,.validation{grid-template-columns:1fr;gap:36px}
  .field-note{padding:22px}
  .theme-grid,.stakes-grid,.purpose-grid,.start-grid{grid-template-columns:1fr}
  .lifecycle{grid-template-columns:repeat(2,1fr)}
  .lifecycle li:not(:nth-child(4n))::after{content:none}
  .section-head{align-items:start;flex-direction:column}
  .theme-title{grid-template-columns:1fr}
  .paper{grid-template-columns:1fr;gap:10px}
  .paper-link{justify-self:start}
  .footer .wrap{flex-direction:column}
  .wrap{width:min(calc(100% - 28px),var(--max))}
}

@media(max-width:480px){
  .lifecycle{grid-template-columns:1fr}
}