:root {
  --portal-ink: #1f2937;
  --portal-muted: #667085;
  --portal-border: #d8dee9;
  --portal-surface: #ffffff;
  --portal-background: #f5f7fa;
  --portal-accent: #1769aa;
}

body {
  background: var(--portal-background);
  color: var(--portal-ink);
}

.portal-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.portal-main {
  flex: 1;
  padding: 2rem 1rem 3rem;
}

.portal-container {
  max-width: 1120px;
  margin: 0 auto;
}

.portal-card {
  background: var(--portal-surface);
  border: 1px solid var(--portal-border);
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.portal-page-header {
  margin-bottom: 1.25rem;
}

.portal-page-header .subtitle {
  color: var(--portal-muted);
}

.portal-detail-list {
  display: grid;
  grid-template-columns: minmax(10rem, 16rem) 1fr;
  gap: 0.75rem 1.25rem;
}

.portal-detail-list dt {
  color: var(--portal-muted);
  font-weight: 600;
}

.portal-detail-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.portal-list {
  border-top: 1px solid var(--portal-border);
}

.portal-list-item {
  border-bottom: 1px solid var(--portal-border);
  padding: 0.85rem 0;
}

.portal-inline-form {
  display: inline-flex;
  align-items: center;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  z-index: 20;
}

.skip-link:focus {
  left: 0.5rem;
}

@media (max-width: 640px) {
  .portal-detail-list {
    grid-template-columns: 1fr;
  }

  .portal-main {
    padding: 1.25rem 0.75rem 2rem;
  }
}