:root {
  --text: #111;
  --muted: #777;
  --link: #777;
  --link-hover: #00f;
  --bg: #fff;
  --nav-w: 11rem;
  --content-w: 42rem;
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.45;
}

a { color: var(--link); text-decoration: none; }
a:visited { color: var(--link); }
a:hover { text-decoration: underline; color: var(--link-hover); }

.wrap {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  gap: 2rem;
  min-height: 100vh;
  padding: 1.5rem 1.5rem 4rem;
}

nav {
  position: sticky;
  top: 1.5rem;
  align-self: start;
}
nav .brand {
  display: block;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
nav li { margin: 0 0 0.35rem; }
nav a[aria-current="page"] { color: #00f; }

main {
  max-width: var(--content-w);
}
main img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.75rem 0 1.25rem;
}
main iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0.75rem 0 1.25rem;
  border: 0;
}
main iframe[src*="youtube"],
main iframe[src*="vimeo"] {
  aspect-ratio: 16 / 9;
  height: auto;
}
main iframe[src*="soundcloud"] {
  height: 166px;
}
main p { margin: 0 0 1rem; }
main hr {
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1.5rem 0;
}
main h1, main h2 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 1rem;
}

@media (max-width: 720px) {
  .wrap {
    grid-template-columns: 1fr;
    padding: 1rem 1rem 3rem;
  }
  nav { position: static; }
  nav ul { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; }
}