html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Public Sans', sans-serif;
  line-height: 1.5;
  font-size: 14px;
  color: #222;
  background: #FFFFFF;
  display: flex;
  min-height: 100dvh;
  box-sizing: border-box;
  padding: 4vh 24px;
}

#main {
  width: 80%;
  max-width: 900px;
  margin: auto;
}

a {
  color: #0A84FF;
  text-decoration: underline;
}

a:hover {
  color: #076ad1;
}

/* Homepage masthead */

#header {
  text-align: center;
  padding-bottom: 1.2em;
  margin-bottom: 1.2em;
  border-bottom: 1px solid #ddd;
}

#logo {
  height: 2.2em;
  width: auto;
  display: block;
  margin: 0 auto 0.6em;
}

#name {
  display: block;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #111;
  font-size: min(0.95em, calc(3.2vw - 1px));
  white-space: nowrap;
}

#tagline {
  display: block;
  color: #888;
  font-size: 0.8em;
  margin-top: 0.3em;
}

/* Homepage directory */

#directory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1em 2em;
  padding-bottom: 1.2em;
  margin-bottom: 1.2em;
  border-bottom: 1px solid #ddd;
}

#directory a {
  font-size: 1.05em;
  font-weight: 700;
  color: #0A84FF;
}

.about-blurb {
  text-align: center;
  color: #666;
  font-size: 0.8em;
  margin: 0 0 1.2em;
  white-space: nowrap;
}

/* Sub-page header (back link + title) */

#subheader {
  padding-bottom: 1.2em;
  margin-bottom: 1.2em;
  border-bottom: 1px solid #ddd;
}

.back {
  font-size: 0.8em;
  font-weight: 700;
}

#subheader h1 {
  font-size: 1.15em;
  font-weight: 700;
  color: #111;
  margin: 0.5em 0 0;
}

.content p {
  margin: 0.4em 0;
}

.signoff {
  text-align: right;
  margin-top: 1em;
}

.content ul {
  margin: 0.4em 0 0.4em 1.2em;
  padding: 0;
}

.content li {
  margin-bottom: 0.9em;
}

.muted {
  color: #888;
}

/* Shared footer */

#footer {
  margin-top: 1.2em;
  padding-top: 1em;
  border-top: 1px solid #ddd;
}

.copyright {
  font-size: 0.75em;
  color: #888;
  margin: 0;
}

@media (max-width: 640px) {
  body {
    line-height: 1.4;
    padding: 20px 18px;
  }

  #main {
    width: 100%;
  }

  #logo {
    height: 1.8em;
  }

  #header, #directory, #subheader {
    padding-bottom: 1em;
    margin-bottom: 1em;
  }

  #directory {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-blurb {
    white-space: normal;
    font-size: min(0.8em, calc(2.7vw - 1px));
  }
}