:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --ink: #14213d;
  --muted: #52606d;
  --accent: #1f7a8c;
  --accent-strong: #0f5f70;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

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

.shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px 20px;
}

.intro {
  width: min(100%, 760px);
  border-left: 4px solid var(--accent);
  padding: 44px 48px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 5.4rem;
  line-height: 0.95;
  letter-spacing: 0;
}

.lead {
  max-width: 620px;
  margin: 26px 0 30px;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
}

.timeline {
  position: relative;
  display: grid;
  gap: 28px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 7px;
  width: 2px;
  background: var(--accent);
  content: "";
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 18px;
}

.timeline-marker {
  z-index: 1;
  width: 16px;
  height: 16px;
  margin-top: 7px;
  border: 3px solid var(--bg);
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.timeline-content {
  min-width: 0;
}

.timeline-status {
  display: block;
  margin-bottom: 6px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.project-link {
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.25;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.project-link:focus,
.project-link:hover {
  color: var(--accent-strong);
}

.timeline-content p {
  max-width: 520px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .intro {
    padding: 32px 24px;
  }

  .lead {
    font-size: 1rem;
  }

  h1 {
    font-size: 3rem;
  }
}