:root {
  --ink: #19212b;
  --muted: #5a6573;
  --blue: #0f82fd;
  --line: #e4e8ee;
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

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

h1, h2, h3 { line-height: 1.25; }

.hero {
  text-align: center;
  padding: 3rem 1.5rem 3.5rem;
  border-bottom: 1px solid var(--line);
}

.logo {
  width: min(360px, 80vw);
  height: auto;
}

.hero h1 {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  margin: 1.5rem 0 0.75rem;
}

.lead {
  max-width: 38rem;
  margin: 0 auto 2rem;
  color: var(--muted);
  font-size: 1.15rem;
}

.button {
  display: inline-block;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.button:hover { background: var(--blue); }

main section {
  max-width: 56rem;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

main section + section { border-top: 1px solid var(--line); }

h2 {
  font-size: 1.6rem;
  margin: 0 0 1.5rem;
}

h2::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 3px;
  margin-top: 0.5rem;
  background: var(--blue);
  border-radius: 2px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(20rem, 100%), 1fr));
  gap: 1.25rem;
}

.grid article {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
}

.grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.grid p {
  margin: 0;
  color: var(--muted);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline li {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
}

.timeline li + li { border-top: 1px dashed var(--line); }

.years {
  font-variant-numeric: tabular-nums;
  color: var(--blue);
  font-weight: 600;
  padding-top: 0.1rem;
}

.timeline h3 {
  margin: 0 0 0.3rem;
  font-size: 1.1rem;
}

.role {
  font-weight: 400;
  color: var(--muted);
}

.role::before { content: "· "; }

.timeline p {
  margin: 0;
  color: var(--muted);
}

.tools {
  margin-top: 1.5rem;
  color: var(--muted);
}

.contact {
  list-style: none;
  padding: 0;
  font-size: 1.2rem;
}

.contact li { margin: 0.4rem 0; }

footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
}

footer p { margin: 0.3rem 0; }

@media (max-width: 34rem) {
  .timeline li {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}