* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --ink: #1a1a1a;
  --ink-light: #444;
  --ink-muted: #777;
  --blue: #1d4ed8;
  --blue-light: #eff6ff;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f9fafb;
  --max-w: 860px;
  --client-logo-gap: 0.75rem;
  /* Approx. 5 visible logo rows at current sizing and gap. */
  --client-logos-collapsed-height: 332px;
  --contrib-list-gap: 0.5rem;
  /* Approx. 5 visible contributor rows at current sizing and gap. */
  --contrib-list-collapsed-height: 190px;
}
body {
  font-family: "Figtree", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, var(--bg) 80%, transparent);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}
.nav-logo {
  height: 1.5rem;
  vertical-align: bottom;
}
.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
  align-items: center;
}
.nav-links a {
  display: block;
  padding: 0 1rem;
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
  line-height: 60px;
}
.nav-links a:hover {
  color: var(--blue);
}
.nav-links .nav-cta a {
  color: var(--blue);
  font-weight: 700;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 2rem 70px;
}
.hero-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-family: "Source Serif 4", serif;
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  max-width: 680px;
}
.hero h1 em {
  font-style: italic;
  color: var(--blue);
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--ink-light);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 2rem;
}
.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem 0.55rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
}
.btn-blue {
  background: linear-gradient(145deg, var(--blue) 40%, var(--ink));
  background-size: 150%;
  background-position-x: 80%;
  transition: background-position-x 0.2s;
  color: white;
}
.btn-blue:hover {
  background-position-x: 0%;
}
.btn-ghost {
  background: transparent;
  color: var(--ink-light);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--ink-muted);
  color: var(--ink);
}
.page-body {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}
.section {
  padding: 64px 0;
}
.section-tag {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.section-title {
  font-family: "Source Serif 4", serif;
  font-size: 1.7rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.25rem;
  line-height: 1.25;
}
p {
  margin-bottom: 1rem;
  color: var(--ink-light);
}
.section > p:last-child,
.callout p:last-child,
.service-item p:last-child,
.step-body p:last-child,
.contact-card p:last-child {
  margin-bottom: 0;
}
strong {
  color: var(--ink);
  font-weight: 600;
}
a {
  color: var(--blue);
  text-decoration: none;
}
a:not(.btn, .client-logo, .contact-card):hover {
  text-decoration: underline;
}
.callout {
  background: linear-gradient(
    145deg,
    var(--bg-soft),
    var(--blue-light) 10%,
    var(--blue-light) 90%,
    var(--bg-soft)
  );
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.callout p {
  color: #1e3a8a;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  border-radius: 10px;
  margin-top: 1.5rem;
}
.service-item {
  background: var(--bg);
  padding: 1.5rem;
}
.service-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.service-item h4::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--blue);
  border-radius: 50%;
  flex-shrink: 0;
}
.service-item p {
  font-size: 0.875rem;
  line-height: 1.65;
  margin: 0;
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}
.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.25rem;
}
.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--ink);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 2px;
}
.step-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.35rem;
}
.step-body p {
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.65;
}
.collapsible-grid-wrap {
  max-height: none;
  overflow: hidden;
  position: relative;
}
.collapsible-grid-wrap.has-overflow {
  max-height: var(--collapsible-grid-collapsed-height, 500px);
}
.collapsible-grid-wrap::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 56px;
  background: linear-gradient(180deg, transparent, var(--bg));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}
.collapsible-grid-wrap.has-overflow::after {
  opacity: 1;
}
.collapsible-grid-wrap.expanded {
  max-height: none;
}
.collapsible-grid-wrap.expanded::after {
  opacity: 0;
}
.collapsible-grid-toggle {
  display: block;
  margin-top: 0.75rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink-muted);
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: color 0.15s;
}
.collapsible-grid-toggle[hidden] {
  display: none;
}
.collapsible-grid-toggle:hover {
  color: var(--blue);
  text-decoration: underline;
}
.client-logos-wrap {
  --collapsible-grid-collapsed-height: var(
    --client-logos-collapsed-height,
    500px
  );
}
.client-logos-featured {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--client-logo-gap);
  margin-top: 1.5rem;
  width: 100%;
}
.client-logos-featured .client-logo {
  flex: 0 1 calc((100% - 2 * var(--client-logo-gap)) / 3);
  min-height: 88px;
  padding: 1rem 1.25rem;
}
.client-logos-featured .client-logo img {
  max-height: 48px;
}
.client-logos-featured .client-logo img.client-logo-metr {
  height: 40px;
}
.client-logos-featured .client-logo img.client-logo-aisi {
  height: 40px;
  max-width: 320px;
}
.client-logos {
  --client-logo-columns: 4;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--client-logo-gap);
  margin-top: 0.75rem;
  width: 100%;
}
.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 1
    calc(
      (100% - (var(--client-logo-columns) - 1) * var(--client-logo-gap)) /
        var(--client-logo-columns)
    );
  min-width: 0;
  min-height: 52px;
  padding: 0.6rem 0.75rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  transition:
    border-color 0.15s,
    background-color 0.15s;
  text-decoration: none;
}
.client-logo img {
  display: block;
  max-height: 24px;
  width: auto;
  max-width: 100%;
}
.client-logo img.client-logo-metr {
  height: 20px;
}
.client-logo img.client-logo-redwood {
  height: 24px;
}
.client-logo img.client-logo-aisi {
  height: 20px;
  max-width: 200px;
}
.client-logo img.client-logo-csc {
  max-height: 40px;
}
.client-logo img.client-logo-dark {
  filter: brightness(0) saturate(100%);
}
.client-logo-composite {
  gap: 0.5rem;
}
.client-logo-composite img {
  max-height: 28px;
}
.client-logo-text {
  font-weight: 600;
  font-size: 1rem;
  color: #111;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
a.leader-card:hover,
a.client-logo:hover {
  border-color: var(--blue);
  background: var(--blue-light);
  text-decoration: none;
}
.team-leadership {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin: 2rem auto;
  max-width: calc(340px + 2rem);
  text-align: center;
}
.leader-card {
  width: 170px;
  padding: 1rem;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none !important;
  transition:
    border-color 0.15s,
    background-color 0.15s;
}
.leader-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  filter: sepia(100%) grayscale(100%);
  transition: filter 0.15s;
}
.leader-card:hover .leader-avatar {
  filter: sepia(10%);
}
.leader-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.leader-card .role {
  font-size: 0.8rem;
  color: var(--blue);
  font-weight: 500;
}
.contrib-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 3rem;
  text-align: center;
}
.contrib-list-wrap {
  --collapsible-grid-collapsed-height: var(
    --contrib-list-collapsed-height,
    500px
  );
}
.contrib-list {
  --contrib-list-columns: 4;
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--contrib-list-gap) 1.25rem;
  width: 100%;
}
.contrib-item {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 1
    calc(
      (100% - (var(--contrib-list-columns) - 1) * 1.25rem) /
        var(--contrib-list-columns)
    );
  min-width: 0;
}
.contrib-person {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  text-align: center;
  text-wrap: balance;
}
.contrib-link {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  text-decoration: none;
  text-align: center;
  text-wrap: balance;
}
.contrib-link:visited {
  color: var(--ink);
}
.contrib-link:hover {
  color: var(--blue);
  text-decoration: underline;
}
/* Keep aligned with --max-w above; CSS custom properties can't be used in media queries. */
@media (min-width: 861px) {
  .collapsible-grid-toggle {
    display: none;
  }
}
@media (max-width: 860px) {
  .client-logos {
    --client-logo-columns: 3;
  }
  .contrib-list {
    --contrib-list-columns: 3;
  }
}
.contact-grid {
  display: flex;
  justify-content: center;
}
.contact-card {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: border-color 0.15s;
  text-decoration: none;
  display: block;
  max-width: calc(340px + 2rem);
}
.contact-card:hover {
  border-color: var(--blue);
  text-decoration: none;
}
.contact-card-label {
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.5rem;
}
.contact-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.contact-card p {
  font-size: 0.875rem;
  line-height: 1.65;
  margin: 0;
}
/* ===== Contact form ===== */
.contact-form {
  margin-top: 2rem;
}
.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1rem;
}
.contact-form .form-field {
  margin-bottom: 1rem;
}
.contact-form label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.3rem;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  font: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  border: 1.5px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  transition: border-color 0.15s;
}
.contact-form input,
.contact-form select {
  height: 2.5rem;
  padding: 0 0.7rem;
}
.contact-form textarea {
  padding: 0.5rem 0.7rem;
  line-height: 1.5;
  resize: vertical;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
}
.contact-form button[type="submit"] {
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.cf-alt {
  display: none;
}
.cf-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 1.25rem;
}
.form-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 0.25rem;
}
.form-status {
  font-size: 0.85rem;
  color: var(--ink-muted);
}
.form-status.ok {
  color: #15803d;
}
.form-status.err {
  color: #b91c1c;
}
@media (max-width: 680px) {
  .contact-form .form-row {
    grid-template-columns: 1fr;
  }
}
.cf-card {
  background: linear-gradient(
    145deg,
    var(--bg-soft),
    var(--blue-light) 10%,
    var(--blue-light) 90%,
    var(--bg-soft)
  );
  border-radius: 10px;
  padding: 1.75rem;
}
footer {
  background: var(--bg-soft);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-logo {
  font-family: "Source Serif 4", serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--ink-muted);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-size: 0.82rem;
  color: var(--ink-muted);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--blue);
}
@media (max-width: 680px) {
  .services-grid,
  .team-leadership,
  .contact-grid,
  .contrib-list {
    padding-left: 0;
  }
  .contrib-list {
    --contrib-list-columns: 1;
  }
  .client-logos {
    --client-logo-columns: 1;
  }
  .client-logos-featured .client-logo {
    flex: 0 1 100%;
  }
  .contrib-list-wrap {
    --contrib-list-collapsed-height: 190px;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 60px;
    right: 0;
    left: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    line-height: 2.5;
    padding: 0 2rem;
  }
  .nav-toggle {
    display: block;
  }
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--ink);
  padding: 0.25rem;
}