/* ============================================================
   Founders Bridge — Section layouts
   ============================================================ */

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(244, 243, 238, 0.72);
  backdrop-filter: saturate(1.5) blur(14px);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav.is-stuck {
  border-bottom-color: var(--rule);
  background: rgba(244, 243, 238, 0.9);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  height: 76px;
}

.nav__links {
  display: flex;
  gap: clamp(1rem, 0.3rem + 1.9vw, 2.25rem);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.nav__links a {
  position: relative;
  color: var(--ink-3);
  padding-block: 0.35rem;
  transition: color var(--dur-fast) var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--dur) var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left center; }

.nav__cta { display: flex; align-items: center; gap: 0.6rem; }

.nav__toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
}

.nav__menu {
  display: none;
  border-top: 1px solid var(--rule);
  background: var(--paper);
}
.nav__menu[data-open="true"] { display: block; }
.nav__menu ul {
  display: flex;
  flex-direction: column;
  padding-block: 0.5rem 1.25rem;
}
.nav__menu a {
  display: block;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

@media (max-width: 940px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav__cta .btn { display: none; }
}

/* ============ HERO ============ */
.hero {
  position: relative;
  padding-top: clamp(3rem, 1.5rem + 5vw, 7rem);
  padding-bottom: clamp(3rem, 2rem + 4vw, 6rem);
}

.hero__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-bottom: clamp(1.75rem, 1rem + 2.6vw, 3.5rem);
}
.hero__meta-right {
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-3);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-hero);
  line-height: var(--leading-hero);
  letter-spacing: var(--track-hero);
  text-wrap: balance;
}
.hero__title .line { display: block; overflow: hidden; padding-bottom: 0.06em; }
.hero__title .line > span {
  display: block;
  transition: transform 950ms var(--ease-out) var(--line-delay, 0ms);
}
.js .hero__title .line > span { transform: translate3d(0, 108%, 0); }
.is-ready .hero__title .line > span { transform: none; }
.hero__title .line:nth-child(2) { --line-delay: 110ms; }

.hero__title em {
  font-style: italic;
  position: relative;
  padding-inline: 0.06em;
}
/* Accent sits behind the word rather than colouring it: acid type on
   paper is 1.4:1, acid ground under ink type is 12:1. */
.js .hero__title em::before { transform: scaleX(0); }
.hero__title em::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  /* Instrument Serif: ascent .99em, descent .31em -> baseline sits .99em
     down a 1.30em content box. These values put the bar's top .31em above
     the baseline so it highlights the lower two-thirds of the x-height. */
  bottom: 0.22em;
  height: 0.40em;
  background: var(--acid);
  z-index: -1;
  transform-origin: left center;
  transition: transform var(--dur-draw) var(--ease-out) 800ms;
}
.is-ready .hero__title em::before { transform: scaleX(1); }

.hero__span { margin-block: clamp(2rem, 1.2rem + 3vw, 4rem); }

.hero__foot {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(1.75rem, 1rem + 3vw, 4rem);
  align-items: start;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-self: end;
}
@media (max-width: 860px) {
  .hero__foot { grid-template-columns: 1fr; }
  .hero__actions { justify-self: start; }
}

/* ============ STATS ============ */
.stats { border-top: 1px solid var(--rule); }
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stat {
  padding: clamp(1.5rem, 1rem + 2vw, 2.75rem) clamp(0.75rem, 0.4rem + 1.4vw, 2rem);
  border-left: 1px solid var(--rule);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 1.6rem + 4.6vw, 5.5rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
}
.stat__num em { font-style: italic; color: var(--ink-4); }
.stat__label {
  margin-top: 0.9rem;
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--ink-3);
  max-width: 22ch;
}
@media (max-width: 780px) {
  .stats__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--rule); }
}

/* ============ APPROACH ============ */
.approach__statement {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1.22;
  letter-spacing: var(--track-tight);
  max-width: 24ch;
  text-wrap: balance;
}
.approach__statement em {
  font-style: italic;
  background: linear-gradient(var(--acid), var(--acid)) no-repeat;
  background-size: 100% 0.4em;
  background-position: 0 76%;
  padding-inline: 0.06em;
}

.approach__body {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 1rem + 4vw, 6rem);
  align-items: start;
}
.approach__notes { display: flex; flex-direction: column; }
.approach__note {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: clamp(1.25rem, 1rem + 1vw, 1.9rem);
  border-top: 1px solid var(--rule);
}
.approach__note:last-child { border-bottom: 1px solid var(--rule); }
.approach__note .idx {
  font-family: var(--font-display);
  font-size: 1.5rem; /* 24px: the size at which --ink-4 meets AA */
  color: var(--ink-4);
  line-height: 1.2;
}
.approach__note h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.2;
  letter-spacing: var(--track-tight);
  margin-bottom: 0.4rem;
}
.approach__note p { color: var(--ink-3); font-size: var(--text-sm); line-height: 1.6; }
@media (max-width: 860px) {
  .approach__body { grid-template-columns: 1fr; }
}

/* ============ SERVICES — editorial index rows ============ */
.svc-list { border-top: 1px solid var(--rule); }

.svc {
  display: grid;
  grid-template-columns: 5rem minmax(0, 7fr) minmax(0, 9fr) 2.5rem;
  gap: clamp(1rem, 0.5rem + 1.6vw, 2.5rem);
  align-items: baseline;
  padding-block: clamp(1.4rem, 1rem + 1.6vw, 2.4rem);
  padding-inline: clamp(0.5rem, 0.2rem + 1vw, 1.25rem);
  margin-inline: clamp(-1.25rem, -0.2rem - 1vw, -0.5rem);
  border-bottom: 1px solid var(--rule);
  transition: background var(--dur) var(--ease);
}
.svc:hover { background: var(--paper-raised); }

.svc__no {
  font-family: var(--font-display);
  font-size: 1.5rem; /* 24px: the size at which --ink-4 meets AA */
  color: var(--ink-4);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur-fast) var(--ease);
}
.svc:hover .svc__no { color: var(--ink); }

.svc__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.1;
  letter-spacing: var(--track-tight);
  position: relative;
}
.svc__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.18em;
  width: 100%;
  height: 2px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.svc:hover .svc__title::after { transform: scaleX(1); }

.svc__desc { color: var(--ink-3); font-size: var(--text-sm); line-height: 1.65; }

.row-arrow {
  justify-self: end;
  color: var(--ink-3);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.svc:hover .row-arrow,
.product:hover .row-arrow { opacity: 1; transform: none; color: var(--ink); }

@media (max-width: 860px) {
  .svc {
    grid-template-columns: 3rem minmax(0, 1fr);
    align-items: start;
    row-gap: 0.5rem;
  }
  .svc__desc { grid-column: 2; }
  .row-arrow { display: none; }
}

/* ============ JOURNEY / THE CROSSING ============ */
.journey__track { position: relative; }

.journey__spine {
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--rule);
}
.journey__spine .fill {
  display: block;
  height: 100%;
  background: var(--acid);
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
}

.journey__steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(0.75rem, 0.2rem + 1.6vw, 2rem);
  padding-top: 2.6rem;
}
.jstep { position: relative; }
.jstep__node {
  position: absolute;
  top: -2.6rem;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  box-shadow: inset 0 0 0 2px var(--rule-strong);
  transition: box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.jstep.is-in .jstep__node {
  background: var(--acid);
  box-shadow: inset 0 0 0 2px var(--ink);
}
.jstep__stage {
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-3);
}
.jstep__title {
  margin-top: 0.5rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.1;
  letter-spacing: var(--track-tight);
}
.jstep__desc {
  margin-top: 0.6rem;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--ink-3);
}

@media (max-width: 880px) {
  .journey__spine { top: 0; bottom: 0; left: 6px; right: auto; width: 2px; height: auto; }
  .journey__spine .fill {
    width: 100%;
    height: 100%;
    transform: scaleY(var(--progress, 0));
    transform-origin: top center;
  }
  .journey__steps {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
    padding-left: 2.5rem;
  }
  .jstep { padding-block: 1.25rem; }
  .jstep__node { top: 1.5rem; left: -2.5rem; }
}

/* ============ AUDIENCE ============ */
.audience__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 0.5rem + 1.4vw, 1.75rem);
}
.aud {
  display: flex;
  flex-direction: column;
  padding: clamp(1.75rem, 1.2rem + 2.4vw, 3.25rem);
  border-radius: var(--r-lg);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
}
.aud--acid {
  background: var(--acid);
  border-color: transparent;
  color: var(--ink);
}
.aud--ink {
  background: var(--ink);
  border-color: transparent;
  color: var(--on-ink);
}
.aud__tag {
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
}
.aud--acid .aud__tag { color: var(--on-acid-muted); }
.aud--ink .aud__tag { color: var(--on-ink-muted); }

.aud__title {
  margin-top: 1.1rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-2xl);
  line-height: 1.08;
  letter-spacing: var(--track-tight);
}
.aud__desc { margin-top: 0.9rem; font-size: var(--text-base); line-height: 1.65; max-width: 40ch; }
.aud--acid .aud__desc { color: var(--on-acid-muted); }
.aud--ink .aud__desc { color: var(--on-ink-muted); }

.aud__list { margin-top: auto; padding-top: 2rem; display: flex; flex-direction: column; }
.aud__list li {
  padding-block: 0.7rem;
  font-size: var(--text-sm);
  border-top: 1px solid rgba(20, 22, 26, 0.16);
}
.aud--ink .aud__list li { border-top-color: var(--rule-ink); }

@media (max-width: 780px) {
  .audience__grid { grid-template-columns: 1fr; }
}

/* ============ PRODUCTS — index rows ============ */
.products__list { border-top: 1px solid var(--rule); }
.product {
  display: grid;
  grid-template-columns: 8rem minmax(0, 6fr) minmax(0, 8fr) auto;
  gap: clamp(1rem, 0.5rem + 1.6vw, 2.5rem);
  align-items: center;
  padding-block: clamp(1.4rem, 1rem + 1.4vw, 2.1rem);
  padding-inline: clamp(0.5rem, 0.2rem + 1vw, 1.25rem);
  margin-inline: clamp(-1.25rem, -0.2rem - 1vw, -0.5rem);
  border-bottom: 1px solid var(--rule);
  transition: background var(--dur) var(--ease);
}
.product:hover { background: var(--paper-raised); }

.product__logo {
  max-height: 30px;
  width: auto;
  filter: grayscale(1);
  opacity: 0.85;
  transition: filter var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.product:hover .product__logo { filter: none; opacity: 1; }
.product__logo--mark { max-height: 34px; }

.product__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.05;
  letter-spacing: var(--track-tight);
}
.product__url {
  margin-top: 0.25rem;
  font-size: var(--text-xs);
  color: var(--ink-3);
}
.product__desc { font-size: var(--text-sm); line-height: 1.6; color: var(--ink-3); }
.product__meta { display: flex; align-items: center; gap: 1rem; justify-self: end; }

@media (max-width: 900px) {
  .product {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 0.75rem;
    align-items: start;
  }
  .product__logo { grid-column: 1 / -1; }
  .product__desc { grid-column: 1 / -1; }
  .product__meta { grid-column: 2; grid-row: 2; }
}

/* ============ PROOF ============ */
.proof__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(1.75rem, 1rem + 3vw, 4.5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}
.proof__col h3 {
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1.25rem;
}
@media (max-width: 780px) {
  .proof__grid { grid-template-columns: 1fr; }
}

/* ============ CTA ============ */
.cta { padding-block: clamp(5rem, 3.5rem + 6vw, 10rem); }
.cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: end;
}
.cta__mark {
  width: clamp(48px, 5vw, 76px);
  height: auto;
  color: var(--on-ink);
  margin-bottom: 1.75rem;
}
.cta__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-4xl);
  line-height: 0.98;
  letter-spacing: var(--track-hero);
  text-wrap: balance;
}
/* On ink the accent is legible as type (12:1), so emphasis is set in it
   directly. A partial highlight bar would leave the top of the letters
   ink-on-ink. See the paper-surface rule in base.css for the inverse. */
.cta__title em {
  font-style: italic;
  color: var(--acid);
}
.cta__lede { color: var(--on-ink-muted); font-size: var(--text-lg); line-height: 1.7; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
@media (max-width: 860px) {
  .cta__inner { grid-template-columns: 1fr; align-items: start; }
}

/* ============ FOOTER ============ */
.footer { border-top: 1px solid var(--rule-ink); }
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2fr));
  gap: clamp(1.75rem, 1rem + 3vw, 4rem);
  padding-block: clamp(3rem, 2rem + 3vw, 5rem);
}
.footer__tag {
  margin-top: 1.5rem;
  color: var(--on-ink-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
  max-width: 34ch;
}
.footer__col h4 {
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--on-ink-muted);
  margin-bottom: 1.1rem;
}
.footer__col li { margin-bottom: 0.6rem; }
.footer__col a {
  font-size: var(--text-sm);
  color: var(--on-ink);
  opacity: 0.82;
  transition: opacity var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.footer__col a:hover { opacity: 1; color: var(--acid); }
.footer__col li:not(:has(a)) {
  font-size: var(--text-sm);
  color: var(--on-ink);
  opacity: 0.5;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--rule-ink);
  font-size: var(--text-xs);
  color: var(--on-ink-muted);
}

@media (max-width: 860px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
}