@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Libre+Franklin:wght@400;500;600&family=Literata:opsz,wght@7..72,400;7..72,600&display=swap');

:root {
  --ink: #202020;
  --paper: #f5f1e7;
  --red: #a94231;
  --blue: #315b73;
  --pencil: #746f66;
  --line: #c6bfb0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Libre Franklin', sans-serif;
}

aside {
  width: 205px;
  min-height: 100vh;
  padding: 32px 25px;
  position: fixed;
  inset: 0 auto 0 0;
  background: #ece6d9;
  border-right: 1px solid var(--line);
}

.note-mark {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  color: inherit;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.15rem;
  font-weight: 500;
  text-decoration: none;
}

aside ul,
footer ul {
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
}

aside li {
  margin-bottom: 18px;
}

aside a {
  color: inherit;
  text-decoration: none;
}

aside a[aria-current='page'],
aside a:hover {
  color: var(--red);
}

main {
  margin-left: 205px;
}

.page-header,
.observation,
.margin-notes,
.long-note {
  width: min(1050px, calc(100% - 70px));
  margin-right: auto;
  margin-left: auto;
}

.page-header {
  padding: 100px 0 80px;
}

.folio {
  margin: 0 0 18px;
  color: var(--red);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: 'Literata', serif;
  font-weight: 400;
}

h1 {
  max-width: 940px;
  margin: 0 0 30px;
  font-size: clamp(4.5rem, 9vw, 9rem);
  line-height: 0.86;
  letter-spacing: -0.045em;
}

.standfirst {
  max-width: 760px;
  color: var(--pencil);
  font-family: 'Literata', serif;
  font-size: 1.18rem;
  line-height: 1.8;
}

.observation {
  padding: 85px 0;
  border-top: 1px solid var(--line);
}

.observation.alternate {
  max-width: none;
  width: auto;
  padding-right: max(35px, calc((100vw - 205px - 1050px) / 2));
  padding-left: max(35px, calc((100vw - 205px - 1050px) / 2));
  background: #e6e1d5;
}

.observation h2,
.long-note h2 {
  margin: 0 0 45px;
  font-size: clamp(3.1rem, 6vw, 6rem);
  line-height: 0.96;
}

.columns {
  columns: 3;
  column-gap: 42px;
}

.columns p,
.long-note p {
  margin-top: 0;
  break-inside: avoid;
  font-family: 'Literata', serif;
  font-size: 1.02rem;
  line-height: 1.85;
}

.margin-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--ink);
  border: 1px solid var(--ink);
}

.margin-notes article {
  padding: 30px;
  background: var(--paper);
}

.margin-notes span {
  color: var(--red);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.73rem;
}

.margin-notes h2 {
  margin: 65px 0 20px;
  color: var(--blue);
  font-size: 2rem;
}

.margin-notes p {
  font-family: 'Literata', serif;
  line-height: 1.75;
}

.long-note {
  padding: 95px 0 110px;
}

.long-note p {
  max-width: 900px;
}

footer {
  margin-left: 205px;
  padding: 35px;
  border-top: 1px solid var(--line);
}

footer ul {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

footer a {
  color: inherit;
}

@media (max-width: 850px) {
  aside {
    width: auto;
    min-height: auto;
    position: static;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  aside ul {
    margin-top: 26px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
  }

  main,
  footer {
    margin-left: 0;
  }

  .columns {
    columns: 1;
  }

  .margin-notes {
    grid-template-columns: 1fr;
  }

  .observation.alternate {
    padding-right: 35px;
    padding-left: 35px;
  }
}