/* humanfrontier.ai — education / training identity
   White ground, warm bands, ink type, green used sparingly.
   Crimson Pro for display, Work Sans for everything else. No JavaScript. */

:root {
  --white: #FFFFFF;
  --warm: #FCFBF9;
  --ink: #14161A;
  --text: #3D4046;
  --muted: #6B6E73;
  --faint: #9A9DA3;
  --green: #2F6B4F;
  --rule: #D9D6CF;
  --gutter: clamp(16px, 5vw, 72px);
  --max: 1120px;
  --sans: "Work Sans", "Helvetica Neue", Arial, sans-serif;
  --serif: "Crimson Pro", Georgia, "Times New Roman", serif;
}
html { color-scheme: light; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  padding-inline: var(--gutter);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
*, *::before, *::after { box-sizing: border-box; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 400; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: .15em; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
img, svg { max-width: 100%; }

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--ink);
  color: var(--white);
  padding: 8px 12px;
  z-index: 10;
}
.skip:focus { left: 8px; color: var(--white); text-decoration: none; }

.disp { font-family: var(--serif); }
.lbl {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.5;
}
.lbl.green { color: var(--green); }
.lbl.ink { color: var(--ink); }
.svgt { font-family: var(--sans); }
.svgd { font-family: var(--serif); }

/* bands: full-bleed rules and tints, content column inside */
.band {
  margin-inline: calc(-1 * var(--gutter));
  padding-inline: var(--gutter);
}
.band.warm { background: var(--warm); }
.wrap { max-width: var(--max); margin-inline: auto; }

/* nav */
.nav { border-bottom: 1px solid var(--rule); }
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px 30px;
  padding-block: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { text-decoration: none; color: var(--ink); }
.brand svg { flex: none; }
.brand .disp { font-size: 23px; font-weight: 500; line-height: 1; }
.links { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 30px; font-size: 14px; }
.links a { color: var(--text); }
.links a:hover { color: var(--ink); text-decoration: none; }
.links .lang {
  color: var(--muted);
  border: 1px solid var(--rule);
  padding: 6px 11px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .04em;
}
.links .lang:hover { border-color: var(--ink); color: var(--ink); }
.links .cta {
  color: var(--green);
  border: 1px solid var(--green);
  padding: 6px 13px;
  font-size: 13px;
  font-weight: 500;
}
.links .cta:hover { color: var(--white); background: var(--green); border-color: var(--green); text-decoration: none; }

/* stance */
.stance { border-bottom: 1px solid var(--ink); }
.stance .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 40px 72px;
  padding-block: 44px 40px;
  align-items: start;
}
.stance-head { display: flex; flex-direction: column; gap: 18px; }
.stance-head .title {
  font-size: clamp(34px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -.005em;
  text-wrap: balance;
}
.stance-head .sub { font-size: 20px; line-height: 1.4; font-style: italic; color: var(--text); max-width: 520px; }
.stance-head .sub.named { font-size: 17px; line-height: 1.45; margin-top: -8px; }
.stance-body { display: flex; flex-direction: column; gap: 16px; padding-top: 30px; }
.stance-body p { font-size: 15.5px; line-height: 1.65; color: var(--text); max-width: 600px; }
.stance-body .claim {
  font-size: 15.5px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  padding-top: 14px;
  max-width: 600px;
}

/* hero + diagram */
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
  gap: 40px 72px;
  padding-block: 44px 36px;
  align-items: start;
}
.hero-text { display: flex; flex-direction: column; gap: 22px; padding-top: 4px; }
.hero-text h1 {
  font-size: clamp(38px, 4.8vw, 54px);
  line-height: 1.08;
  letter-spacing: -.005em;
  text-wrap: balance;
}
.hero-text .lead { font-size: 16px; line-height: 1.6; color: var(--text); max-width: 470px; }
.cta { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.btn {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  font-weight: 500;
  font-size: 14.5px;
  padding: 12px 20px;
  border: 1px solid var(--green);
  line-height: 1.3;
}
.btn:hover { background: var(--ink); border-color: var(--ink); color: var(--white); text-decoration: none; }
.btn.outline { background: transparent; color: var(--green); font-size: 14px; padding: 10px 18px; }
.btn.outline:hover { background: transparent; color: var(--ink); border-color: var(--ink); }
.fine { font-size: 13px; color: var(--muted); line-height: 1.5; }
.fr-line {
  border-top: 1px solid var(--rule);
  padding-top: 16px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text);
  max-width: 460px;
}
.fr-line .disp { font-size: 16px; font-style: italic; color: var(--ink); }
.fr-line .dim { color: var(--muted); }

.diagram { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.diagram-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 16px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 8px;
}
.diagram-scroll { overflow-x: auto; }
.scroll-hint { display: none; font-size: 11px; color: var(--faint); letter-spacing: .04em; }
.diagram-scroll svg { display: block; width: 100%; height: auto; max-width: 100%; }
.legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 32px;
  border-top: 1px solid var(--rule);
  padding-top: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text);
}
.legend > div { display: flex; gap: 10px; align-items: flex-start; }
.legend svg { flex: none; margin-top: 1px; }
.legend strong, .tell strong, .research strong { font-weight: 600; color: var(--ink); }
.diagram .note { font-size: 12.5px; line-height: 1.55; color: var(--muted); max-width: 700px; }

/* section headers */
.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 24px;
}
.sec-head h2 { font-size: 30px; line-height: 1.2; }

/* profiles */
.profiles { border-top: 1px solid var(--ink); }
.profiles .wrap { display: flex; flex-direction: column; gap: 20px; padding-block: 32px 36px; }
.cols4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 40px; }
.cols3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 48px; }
.card {
  border-top: 1px solid var(--ink);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card.dest { border-top-color: var(--green); }
.card h3 { font-size: 22px; font-weight: 500; line-height: 1.2; }
.card p { font-size: 13.5px; line-height: 1.55; color: var(--text); }
.tell, .facts {
  border-top: 1px solid var(--rule);
  padding-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
}
.facts { display: flex; flex-direction: column; gap: 4px; }
.facts .price { font-weight: 600; color: var(--ink); }
.facts a { font-weight: 500; }
.facts .btn { align-self: flex-start; margin-block: 4px 2px; font-size: 14px; padding: 10px 18px; }
.card .book-sub { font-size: 17px; line-height: 1.3; font-style: italic; color: var(--ink); margin-top: -4px; }
.cta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 16px;
  border-top: 1px solid var(--rule);
  padding-top: 16px;
}

/* training */
.training { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.training .wrap { display: flex; flex-direction: column; gap: 20px; padding-block: 32px 34px; }

/* governance */
.gov .wrap {
  display: grid;
  grid-template-columns: minmax(0, 460px) minmax(0, 1fr);
  gap: 36px 72px;
  padding-block: 36px;
  align-items: start;
}
.gov-text { display: flex; flex-direction: column; gap: 18px; }
.gov-text h2 { font-size: 30px; line-height: 1.2; text-wrap: balance; }
.gov-text p { font-size: 15px; line-height: 1.6; color: var(--text); max-width: 470px; }

.report {
  background: var(--warm);
  border: 1px solid var(--rule);
  padding: 18px 22px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--ink);
  min-width: 0;
}
.report-head { display: flex; flex-direction: column; gap: 4px; border-bottom: 1px solid var(--ink); padding-bottom: 10px; }
.report-row { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 4px 16px; }
.report-head .disp { font-size: 18px; font-weight: 500; }
.report-head .meta { color: var(--muted); }
.report-head .meta b { font-weight: 600; color: var(--ink); }
.findings { display: flex; flex-direction: column; gap: 8px; }
.finding { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 8px; }
.finding + .finding { border-top: 1px solid var(--rule); padding-top: 8px; }
.finding .n { color: var(--green); font-weight: 600; }
.finding > div { display: flex; flex-direction: column; gap: 2px; }
.finding .t { font-weight: 600; }
.finding .k { font-weight: 500; }
.questions { display: flex; flex-direction: column; gap: 6px; border-top: 1px solid var(--ink); padding-top: 10px; }
.questions .owner { color: var(--muted); }
.report-foot .disp { font-size: 14.5px; font-style: italic; }

/* about the author */
.about { border-top: 1px solid var(--rule); }
.about .wrap {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 24px 72px;
  padding-block: 36px;
  align-items: start;
}
.about-head { display: flex; flex-direction: column; gap: 12px; }
.about-head h2 { font-size: 30px; line-height: 1.2; }
.about-head .sub { font-size: 14px; line-height: 1.55; color: var(--text); max-width: 300px; }
.about-body { display: flex; flex-direction: column; gap: 14px; }
.about-body p { font-size: 15px; line-height: 1.65; color: var(--text); max-width: 640px; }
.about-body .claim {
  font-weight: 600;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}

/* stay in the loop */
.loop { border-top: 1px solid var(--rule); }
.loop .wrap {
  display: grid;
  grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
  gap: 20px 72px;
  padding-block: 32px 34px;
  align-items: start;
}
.loop h2 { font-size: 30px; line-height: 1.2; }
.loop .sub { font-size: 14px; color: var(--text); margin-top: 8px; }
.loop form { display: flex; flex-direction: column; gap: 10px; max-width: 520px; }
.loop label { font-size: 13px; color: var(--text); }
.field { display: flex; gap: 10px; flex-wrap: wrap; }
.loop input {
  flex: 1 1 220px;
  min-width: 0;
  font: 500 14.5px/1.3 var(--sans);
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 11px 14px;
}
.loop input::placeholder { color: var(--faint); }
.loop button {
  font: 500 14.5px/1.3 var(--sans);
  background: var(--green);
  color: var(--white);
  border: 1px solid var(--green);
  border-radius: 0;
  padding: 11px 20px;
  cursor: pointer;
}
.loop button:hover { background: var(--ink); border-color: var(--ink); }

/* research + manifesto */
.research { border-top: 1px solid var(--rule); }
.research .wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-block: 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
}
.research .row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 24px;
}

/* footer */
.foot { border-top: 1px solid var(--rule); }
.foot .wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 24px;
  padding-block: 14px 22px;
  font-size: 12.5px;
  color: var(--muted);
}
.foot a { color: var(--muted); }
.foot a:hover { color: var(--ink); }

/* secondary pages (privacy) */
.page .wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-block: 44px 56px;
}
.page .wrap > * { max-width: 720px; }
.page h1 { font-size: clamp(32px, 4vw, 42px); line-height: 1.12; text-wrap: balance; }
.page h2 { font-size: 22px; font-weight: 500; line-height: 1.25; margin-top: 14px; border-top: 1px solid var(--rule); padding-top: 14px; }
.page p { font-size: 15px; line-height: 1.65; color: var(--text); }
.page .lead { font-size: 17px; color: var(--ink); }
.page .muted { color: var(--muted); font-size: 13px; border-top: 1px solid var(--rule); padding-top: 14px; margin-top: 8px; }

@media (max-width: 960px) {
  .cols4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 880px) {
  .stance .wrap, .hero .wrap, .gov .wrap, .about .wrap, .loop .wrap { grid-template-columns: minmax(0, 1fr); }
  .stance-body { padding-top: 0; }
  .hero-text .lead, .gov-text p, .about-head .sub { max-width: 600px; }
}
@media (max-width: 760px) {
  .cols3 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .stance .wrap { padding-block: 22px 18px; gap: 16px; }
  .stance-head { gap: 10px; }
  .stance-head .title { font-size: 24px; line-height: 1.15; }
  .stance-head .sub { font-size: 15px; }
  .stance-head .sub.named { font-size: 13px; margin-top: -4px; }
  .stance-body { gap: 8px; }
  .stance-body p { font-size: 13px; line-height: 1.5; }
  .stance-body p:nth-of-type(2) { display: none; }
  .stance-body .claim { padding-top: 8px; font-size: 13px; }
}
@media (max-width: 640px) {
  .diagram-scroll svg { min-width: 600px; max-width: none; }
  .scroll-hint { display: block; }
  .legend { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .cols4 { grid-template-columns: minmax(0, 1fr); }
  .nav .wrap { padding-block: 16px; }
  .links { gap: 10px 18px; }
  .stance .wrap { padding-block: 36px 32px; }
  .hero .wrap { padding-block: 36px 32px; }
  .report { padding: 16px 16px 14px; }
}

/* ===== Colour pass — 18 September 2026 (v1.3.1) =====
   Dark green header + opening band, amber accent for actions and labels,
   governance section and footer in dark green. Type, layout and copy unchanged. */
:root{ --deep:#173D2E; --deep2:#1E4D3A; --amber:#E9A83A; --amber-ink:#9A5F00; --cream:#F4EFE4; }
.nav{ background:var(--deep); border-bottom:1px solid rgba(255,255,255,.12); }
.nav .brand, .nav .brand .disp, .nav .links a{ color:var(--cream); }
.nav .links a:hover{ color:var(--amber); text-decoration:none; }
.nav .brand svg rect{ stroke:var(--cream); } .nav .brand svg line{ stroke:var(--amber); }
.nav .links .lang{ color:var(--cream); border-color:rgba(255,255,255,.35); }
.nav .links .cta{ background:var(--amber); color:var(--ink); border-color:var(--amber); font-weight:600; }
.nav .links .cta:hover{ background:var(--cream); border-color:var(--cream); color:var(--ink); }
.stance.band.warm{ background:linear-gradient(180deg,var(--deep) 0%,var(--deep2) 100%); border-bottom:4px solid var(--amber); color:var(--cream); }
.stance .lbl.green{ color:var(--amber); }
.stance-head .title{ color:#FFFFFF; }
.stance-head .sub, .stance-head .sub.named{ color:rgba(255,255,255,.82); }
.stance-body p{ color:rgba(255,255,255,.82); }
.stance-body .claim{ color:#FFFFFF; border-top-color:rgba(255,255,255,.25); }
.lbl.green{ color:var(--amber-ink); }
.hero-text h1::after{ content:""; display:block; width:72px; height:5px; background:var(--amber); margin-top:18px; }
.btn{ background:var(--amber); border-color:var(--amber); color:var(--ink); font-weight:600; }
.btn:hover{ background:var(--deep); border-color:var(--deep); color:#FFFFFF; }
.btn.outline{ background:transparent; color:var(--deep); border-color:var(--deep); }
.btn.outline:hover{ background:var(--deep); color:#FFFFFF; }
.card{ border-top-width:3px; }
.card.dest{ border-top:4px solid var(--amber); background:#FFF8EA; }
.gov.band{ background:var(--deep); color:var(--cream); }
.gov .lbl.green{ color:var(--amber); }
.gov-text h2{ color:#FFFFFF; } .gov-text p{ color:rgba(255,255,255,.82); }
.gov .fine{ color:rgba(255,255,255,.6); }
.gov .btn{ background:var(--amber); color:var(--ink); }
.band.news{ background:#FFF3DA; border-top:3px solid var(--amber); }
.foot.band{ background:var(--deep); color:rgba(255,255,255,.7); border-top:0; }
.foot a{ color:rgba(255,255,255,.85); } .foot a:hover{ color:var(--amber); }
.foot .lbl, .foot p, .foot span{ color:rgba(255,255,255,.7); }