:root {
  --bg: #f7f2EF;
  --text: #111111;
  --muted: #666666;
  --line: #dedbd2;
  --card: #ffffff;
  --soft: #efede6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

.section {
  padding: 96px 24px;
}

.container {
  max-width: 860px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  max-width: 760px;
  margin: 0 0 32px;
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
  font-weight: 620;
}

p {
  margin: 0 0 22px;
  max-width: 760px;
  font-size: 1.1rem;
  line-height: 1.68;
  color: #242424;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.model-diagram {
  margin: 52px 0;
}

.diagram-card {
  display: grid;
  grid-template-columns: 1fr auto 1.15fr auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at top left, rgba(0, 0, 0, 0.06), transparent 34%),
    var(--card);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.05);
}

.diagram-inputs,
.diagram-outputs {
  display: grid;
  gap: 10px;
}

.diagram-inputs span,
.diagram-outputs span {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  font-size: 0.84rem;
  color: #333333;
  text-align: center;
}

.diagram-core {
  display: grid;
  place-items: center;
  min-height: 160px;
  padding: 24px;
  border: 1px solid #cfcbbf;
  border-radius: 24px;
  background: #111111;
  color: #ffffff;
  text-align: center;
}

.diagram-core span {
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #bfbfbf;
}

.diagram-core strong {
  margin-top: 8px;
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 560;
}

.diagram-arrow {
  color: var(--muted);
  font-size: 1.4rem;
}

figcaption {
  margin-top: 14px;
  max-width: 720px;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--muted);
}

@media (max-width: 760px) {
  .section {
    padding: 72px 18px;
  }

  .diagram-card {
    grid-template-columns: 1fr;
  }

  .diagram-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .diagram-core {
    min-height: 130px;
  }
}

.site-header {
  width: 100%;
  padding: 56px 24px 0;
}

.header-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0;
}

.site-logo {
  display: block;
  width: 210px;
  height: auto;
}

.section {
  padding: 52px 24px 96px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
}

/* Founder section */
.founder-section {
  border-top: 1px solid var(--line);
}

.founder-container {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 64px;
  align-items: start;
}

.founder-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 16px;
}

.founder-name {
  margin: 0 0 40px;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 620;
}

.founder-bio p {
  max-width: 620px;
}

.founder-links {
  display: flex;
  gap: 32px;
  margin-top: 8px;
  font-size: 0.95rem;
}

.founder-links a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.15s;
}

.founder-links a:hover {
  color: var(--text);
}

@media (max-width: 860px) {
  .founder-container {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .founder-photo {
    aspect-ratio: 4 / 3;
    max-width: 400px;
  }
}