*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 400;
  color: #4A4A4A;
  background: #FFFFFF;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  max-width: 680px;
  margin-left: max(2rem, calc(50vw - 480px));
  margin-right: 2rem;
  padding-top: 6rem;
  padding-bottom: 4rem;
}

/* Logo mark */

.logo-mark {
  display: block;
  height: 64px;
  width: auto;
  margin-bottom: 2rem;
  border: 2px solid #E07B39;
}

/* Company identity */

.company-abbr {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: 0.8125rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #1A1A1A;
  margin-bottom: 0.25rem;
}

.company-abbr strong {
  font-weight: 700;
}

.company-abbr span {
  letter-spacing: normal;
}

.company-name {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 1.125rem;
  color: #1A1A1A;
  margin-bottom: 2rem;
}

/* Accent rule */

hr {
  border: none;
  width: 48px;
  height: 2px;
  background: #E07B39;
  margin-bottom: 2rem;
}

/* Heading */

h1 {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.4;
  color: #1A1A1A;
  margin-bottom: 1rem;
}

/* Description */

.description {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* Contact */

.contact {
  margin-bottom: 0;
}

.contact a {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: 0.9375rem;
  color: #1A1A1A;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease;
}

.contact a:hover {
  text-decoration-color: #E07B39;
}

/* Footer */

footer {
  max-width: 680px;
  margin-left: max(2rem, calc(50vw - 480px));
  margin-right: 2rem;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid #E0E0E0;
}

footer p {
  font-size: 0.8125rem;
  color: #9A9A9A;
}

/* Mobile */

@media (max-width: 640px) {
  main {
    margin-left: 1.5rem;
    margin-right: 1.5rem;
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  footer {
    margin-left: 1.5rem;
    margin-right: 1.5rem;
  }

  h1 {
    font-size: 1.25rem;
  }
}