:root {
  --inner-bg: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 58%, #efeff4 100%);
  --inner-max-width: 760px;
  --page-bottom-padding: 24px;
  --mobile-bottom-padding: 32px;
}

html:root {
  background: var(--inner-bg);
  scrollbar-gutter: stable both-edges;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--inner-bg);
}

main {
  width: min(var(--inner-max-width), 100%);
  margin: 0 auto;
  padding: 28px 14px var(--page-bottom-padding);
}

.topnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 30px;
  padding: 0 4px 18px;
}

.nav-left {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
}

.brand-link {
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  white-space: nowrap;
}

.nav-divider {
  width: 1px;
  height: 14px;
  background: var(--line);
  flex: 0 0 auto;
}

.nav-action,
.help-link {
  color: var(--blue);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  line-height: 30px;
  white-space: nowrap;
}

button.nav-action {
  border: 0;
  padding: 0;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
}

header {
  padding: 6px 4px 16px;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 7vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 760;
}

.lead {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
}

@media (max-width: 640px) {
  main {
    padding: 14px 10px var(--mobile-bottom-padding);
  }

  .topnav {
    padding-bottom: 12px;
  }

  header {
    padding-bottom: 10px;
  }

  h1 {
    font-size: 30px;
  }

  .lead {
    font-size: 13px;
  }
}