:root {
  --ink: #1a1d1f;
  --muted: #5b6166;
  --line: #e6e5e2;
  --bg: #f7f7f5;
  --accent: #1a1d1f;
  --max: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  font-size: 17px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  padding: 28px 0 0;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header.site a.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

header.site nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
}

header.site nav a:hover { color: var(--ink); }

main { padding: 40px 0 80px; }

h1 {
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 100px 0 22px;
}

h2 {
  font-size: 24px;
  margin: 56px 0 18px;
  letter-spacing: -0.005em;
}

h3 {
  font-size: 18px;
  margin: 28px 0 8px;
}

p { margin: 0 0 16px; }

.lede {
  font-size: 20px;
  color: var(--ink);
}

.muted { color: var(--muted); }

a { color: var(--ink); }

.cta {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 22px;
  background: var(--ink);
  color: #fff !important;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
}

.cta:hover { opacity: 0.85; }

.logos-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 40px 0 16px;
}

.logo-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px 36px;
  margin-bottom: 8px;
}

.logo-grid img {
  height: 42px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.72;
}

ul.check {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

ul.check li {
  padding-left: 26px;
  position: relative;
  margin-bottom: 10px;
}

ul.check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 20px 0 8px;
}

.grid-3 ul {
  margin: 0;
  padding-left: 18px;
}

.grid-3 li { margin-bottom: 8px; font-size: 15px; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  header.site { padding-top: 20px; }
  header.site nav a { margin-left: 14px; font-size: 13px; }
  main { padding: 24px 0 56px; }
  h1 { font-size: 28px; margin-top: 48px; }
  h2 { font-size: 21px; margin: 40px 0 14px; }
  .lede { font-size: 18px; }
  .grid-3 { grid-template-columns: 1fr; gap: 24px; }
  .logo-grid { gap: 20px 24px; }
  .logo-grid img { height: 30px; max-width: 120px; }
  .author-block { flex-wrap: wrap; }
  .exec-summary { padding: 16px 18px; }
  footer.site .wrap { flex-direction: column; gap: 10px; }
}

@media (max-width: 420px) {
  header.site .wrap { flex-direction: column; align-items: flex-start; gap: 10px; }
  header.site nav a { margin-left: 0; margin-right: 16px; }
}

blockquote.testimonial {
  position: relative;
  margin: 0 0 28px;
  padding: 2px 0 2px 26px;
  border-left: 3px solid var(--line);
}

blockquote.testimonial::before {
  content: "\201C";
  position: absolute;
  left: 6px;
  top: -14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 46px;
  line-height: 1;
  color: var(--line);
}

blockquote.testimonial p.quote {
  font-style: italic;
  font-size: 17px;
  margin: 0 0 10px;
  color: var(--ink);
}

blockquote.testimonial cite {
  display: block;
  font-style: normal;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

blockquote.testimonial cite::before {
  content: "— ";
}

.author-block {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.author-block img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.author-block p { margin: 0; font-size: 15px; color: var(--muted); }

.author-block .linkedin-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.author-block .linkedin-link:hover { color: var(--ink); }

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 28px 0 60px;
}

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
}

footer.site a {
  color: var(--muted);
  text-decoration: none;
}

footer.site a:hover { color: var(--ink); }

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
}

.back-link:hover { color: var(--ink); }

article.case-study {
  padding: 32px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

article.case-study:last-of-type { border-bottom: none; }

.exec-summary {
  background: #f4f2ee;
  border-radius: 8px;
  padding: 20px 22px;
  margin: 18px 0 28px;
  font-size: 15px;
}

.exec-summary dt {
  font-weight: 600;
  margin-top: 10px;
}

.exec-summary dt:first-child { margin-top: 0; }

.exec-summary dd { margin: 2px 0 0; color: var(--muted); }