:root {
  --lean-blue: #345574;
  --lean-blue-dark: #263f58;
  --lean-gray: #696969;
  --lean-light-gray: #e9e9e9;
  --lean-white: #ffffff;
  --lean-black: #111111;
  --line: #dedede;
  --bg: #f7f7f6;
  --font-title: 'Barlow Condensed', sans-serif;
  --font-text: 'Inter', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--lean-black);
  font-family: var(--font-text);
  font-size: 15px;
  line-height: 1.62;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
}
.site-header__inner {
  width: min(100% - 64px, 1320px);
  min-height: 80px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { width: 155px; }
.internal-link {
  color: var(--lean-gray);
  font-size: 12px;
  font-weight: 500;
  transition: color .18s ease;
}
.internal-link:hover { color: var(--lean-blue); }
.internal-link span { margin-left: 7px; }

.page {
  width: min(100% - 64px, 1320px);
  margin: 0 auto;
  padding: 74px 0 60px;
}
.eyebrow {
  color: var(--lean-blue);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .72fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: end;
  padding: 0 0 54px;
  border-bottom: 1px solid var(--line);
}
.hero h1 {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--lean-blue);
  font-family: var(--font-title);
  font-size: clamp(44px, 5.2vw, 62px);
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -.005em;
}
.hero-aside p {
  max-width: 56ch;
  margin: 0;
  color: var(--lean-gray);
  line-height: 1.68;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
  color: #8a8a8a;
  font-size: 11px;
}
.hero-meta span + span::before {
  content: '•';
  margin-right: 18px;
  color: #b5b5b5;
}

.diagnostics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--lean-white);
}
.diagnostic-card {
  min-height: 410px;
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 34px;
  padding: 34px 38px 36px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transition: background .18s ease;
}
.diagnostic-card:hover { background: #fbfbfb; }
.card-number {
  color: #a6a6a6;
  font-family: Georgia, serif;
  font-size: 17px;
  font-weight: 400;
}
.card-kicker {
  color: var(--lean-blue);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.card-main h2 {
  max-width: 520px;
  margin: 9px 0 13px;
  color: var(--lean-blue);
  font-family: var(--font-title);
  font-size: clamp(29px, 3vw, 39px);
  font-weight: 600;
  line-height: 1.08;
}
.card-main p {
  max-width: 54ch;
  margin: 0;
  color: var(--lean-gray);
  font-size: 13.5px;
  line-height: 1.62;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 20px;
  color: #8a8a8a;
  font-size: 11px;
}
.card-meta span + span::before {
  content: '•';
  margin-right: 18px;
  color: #b5b5b5;
}
.card-action {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 18px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--lean-blue);
  border-radius: 3px;
  background: var(--lean-blue);
  color: var(--lean-white);
  font-size: 12px;
  font-weight: 600;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.card-action:hover {
  background: var(--lean-blue-dark);
  border-color: var(--lean-blue-dark);
  transform: translateY(-1px);
}
.footer-note {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 540px);
  gap: 56px;
  align-items: end;
  padding: 34px 0 0;
  color: #8b8b8b;
  font-size: 11px;
}
.footer-note p { margin: 6px 0 0; color: var(--lean-gray); font-size: 13px; }
.footer-note > span { text-align: right; }

@media (max-width: 900px) {
  .site-header__inner, .page { width: min(100% - 36px, 1320px); }
  .page { padding-top: 48px; }
  .hero { grid-template-columns: 1fr; gap: 28px; padding-bottom: 38px; }
  .diagnostics { grid-template-columns: 1fr; }
  .diagnostic-card { min-height: 0; }
  .footer-note { grid-template-columns: 1fr; gap: 20px; }
  .footer-note > span { text-align: left; }
}

@media (max-width: 560px) {
  .site-header__inner { width: min(100% - 28px, 1320px); min-height: 70px; }
  .page { width: min(100% - 28px, 1320px); padding-top: 38px; }
  .brand { width: 134px; }
  .hero h1 { font-size: 42px; }
  .hero-meta { display: grid; gap: 4px; }
  .hero-meta span + span::before, .card-meta span + span::before { display: none; }
  .diagnostic-card { padding: 28px 24px 30px; gap: 26px; }
  .card-main h2 { font-size: 32px; }
  .card-meta { display: grid; gap: 4px; }
  .card-action { width: 100%; justify-content: space-between; }
}