* { box-sizing: border-box; }

/* Class rules below set display, so hidden needs to win. */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex;
  align-items: baseline;
  gap: var(--s-5);
  max-width: 60rem;
  margin: 0 auto;
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--rule);
}
.topbar__mark {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  font-variation-settings: "wdth" 88;
  color: var(--ink);
  text-decoration: none;
}
.mark { display: block; color: var(--accent); }
.mark svg { display: block; width: 100%; height: 100%; }
.topbar__mark .mark { width: 1.15rem; height: 1.15rem; }
.topbar__nav {
  display: flex;
  gap: var(--s-4);
  align-items: baseline;
  margin-left: auto;
}
.topbar__nav a,
.topbar__nav .linkish {
  color: var(--muted);
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  cursor: pointer;
}
.topbar__nav a:hover,
.topbar__nav .linkish:hover { color: var(--ink); }

.sheet {
  max-width: 60rem;
  margin: 0 auto;
  padding: var(--s-5) var(--s-5) var(--s-7);
}

.pagehead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-4) 0 var(--s-4);
  border-bottom: 2px solid var(--ink);
  margin-bottom: var(--s-5);
}
.pagehead h1 { margin: 0; }
.pagehead__eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s-2);
}
.pagehead__eyebrow a { color: inherit; text-decoration: none; }
.pagehead__actions { display: flex; gap: var(--s-2); flex-wrap: wrap; }

.section { margin: 0 0 var(--s-6); }
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  margin: 0 0 var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--rule-firm);
}
.section-heading h2 { margin: 0; }
.section-heading--question h2 { max-width: var(--measure); }
.section-heading--question .badge { vertical-align: 0.2em; margin-left: 0.4rem; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-6);
}
@media (max-width: 46rem) {
  .split { grid-template-columns: 1fr; }
  .pagehead { flex-direction: column; align-items: flex-start; }
}

/* Signing in. One column, centred, nothing else on the page. */
.entrance {
  max-width: 22rem;
  margin: 0 auto;
  padding: 5rem var(--s-5) var(--s-7);
}
.entrance__mark .mark { width: 2.25rem; height: 2.25rem; margin: 0 0 var(--s-5); }
.entrance h1 { margin: 0 0 var(--s-2); font-size: var(--step-3); }
.entrance .form { margin-top: var(--s-5); }
.entrance .form__actions { flex-direction: column; align-items: stretch; gap: var(--s-3); }
.entrance .form__actions .btn { justify-content: center; }
.entrance .form__actions a { text-align: center; }