.app {
  max-width: 1280px;
  margin: 0 auto;
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-background-primary);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 var(--space-4);
  height: 48px;
  border-bottom: 0.5px solid var(--color-border-tertiary);
  background: var(--color-background-primary);
  position: relative;
  gap: var(--space-2);
}

.navs {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nb {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  font-family: var(--font-body);
}

.nb:hover {
  background: var(--color-background-secondary);
  color: var(--color-text-primary);
}

.nb.on {
  background: #faece7;
  color: #993c1d;
}

.nb i {
  font-size: 14px;
}

.pg {
  display: none;
  padding: var(--space-5);
}

.pg.on {
  display: block;
}

.page-section {
  margin-bottom: var(--space-5);
}

.sec {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.5px;
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .pg {
    padding: var(--space-4);
  }

  .topbar {
    height: auto;
    min-height: 48px;
    padding: var(--space-2) var(--space-3);
    justify-content: flex-start;
  }

  .navs {
    justify-content: flex-start;
  }
}