:root {
  --ink: #18212b;
  --paper: #f3f5f7;
  --surface: #ffffff;
  --accent: #304f9f;
  --accent-dark: #20366e;
  --contact: #d9e2e8;
  --max-width: 1300px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
}

body {
  max-width: var(--max-width);
  min-height: 100vh;
  margin: 0 auto;
  color: var(--ink);
  background: var(--surface);
  font-family: "Arial", "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr;
}

.intro,
.contact {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 32rem;
  padding: 3rem 1.5rem;
}

.intro {
  color: #fff;
  background: linear-gradient(145deg, var(--accent), var(--accent-dark));
}

.intro h1 {
  margin: 0 0 2rem;
  font-size: clamp(2.5rem, 11vw, 3rem);
  font-weight: 400;
  line-height: 1.05;
}

.intro p {
  max-width: 42rem;
  margin: 0 0 1.25rem;
}

.intro p:last-child {
  margin-bottom: 0;
}

.contact {
  align-items: center;
  text-align: center;
  background: var(--contact);
}

.portrait {
  width: min(68vw, 16rem);
  aspect-ratio: 1;
  margin: 0 0 2rem;
  border: 0.5rem solid rgba(255, 255, 255, 0.62);
  border-radius: 50%;
  object-fit: cover;
}

.contact p {
  margin: 0.2rem 0;
}

.contact a,
.not-found a {
  color: var(--accent-dark);
  font-weight: 700;
}

footer {
  padding: 1.25rem 1.5rem;
  color: #fff;
  background: var(--ink);
  font-size: 0.9rem;
  text-align: center;
}

footer p {
  margin: 0;
}

.not-found {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 2rem 1.5rem;
  text-align: center;
}

@media (min-width: 720px) {
  .profile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro,
  .contact {
    min-height: 43.75rem;
    padding: 4rem clamp(2rem, 6vw, 5rem);
  }
}