.activity-page {
  width: min(calc(1080px + 220px + 2rem), calc(100% - 32px));
}

.activity-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.activity-content {
  min-width: 0;
}

.activity-side-nav {
  position: sticky;
  top: 110px;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid rgba(51, 51, 51, 0.12);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}

.activity-side-nav-title {
  margin: 0 0 0.9rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}

.activity-side-nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.activity-side-nav-list li + li {
  margin-top: 0.4rem;
}

.activity-side-nav-list a {
  display: block;
  padding: 0.65rem 0.8rem;
  text-decoration: none;
  border-left: 3px solid transparent;
  background: #fbfbf8;
}

.activity-side-nav-list a:hover {
  border-left-color: var(--primary-color);
  background: #f3f3ee;
}

.activity-section {
  scroll-margin-top: 96px;
}

.activity-feature-body p,
.activity-card-content p,
.activity-entry-note {
  margin-top: 0;
}

.activity-section + .activity-section {
  margin-top: 5rem;
}

.activity-section h3 {
  margin: 0 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(51, 51, 51, 0.16);
}

.activity-lead {
  margin: 0 0 2rem;
}

.activity-timeline {
  display: grid;
  gap: 1.25rem;
}

.activity-entry {
  padding: 1.5rem;
  background: #fff;
  border: 1px solid rgba(51, 51, 51, 0.12);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
}

.activity-date {
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.activity-entry-note {
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.activity-entry-list,
.activity-doc-list {
  margin: 0;
  padding-left: 1.25rem;
}

.activity-entry-list li + li,
.activity-doc-list li + li {
  margin-top: 0.85rem;
}

.activity-doc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.activity-card {
  height: 100%;
  padding: 1.75rem;
  background: #fbfbf8;
  border: 1px solid rgba(51, 51, 51, 0.12);
}

.activity-card h4,
.activity-result h4 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.activity-card-content p:last-child,
.activity-feature-body p:last-child {
  margin-bottom: 0;
}

.activity-link {
  margin-top: 1.25rem;
}

.activity-doc-list a,
.activity-link a {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.activity-feature {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 2rem;
  align-items: start;
}

.activity-feature-image img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(51, 51, 51, 0.12);
}

.activity-caption {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  text-align: center;
  opacity: 0.75;
}

.activity-result {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(51, 51, 51, 0.12);
}

@media screen and (max-width: 900px) {
  .activity-layout,
  .activity-doc-grid,
  .activity-feature {
    grid-template-columns: 1fr;
  }

  .activity-side-nav {
    position: static;
  }
}

@media screen and (max-width: 767px) {
  .activity-page {
    width: min(100%, calc(100% - 24px));
  }

  .activity-layout {
    gap: 1.5rem;
  }

  .activity-side-nav {
    padding: 1rem;
  }

  .activity-entry,
  .activity-card {
    padding: 1.25rem;
  }

  .activity-section + .activity-section {
    margin-top: 4rem;
  }
}