.steps { display: grid; grid-template-columns: 380px 1fr; gap: var(--space-block); align-items: start; }
.steps__nav { position: sticky; top: calc(var(--header-h) + 40px); display: flex; flex-direction: column; gap: var(--measure-2xs); }
.steps__tab {
  display: flex; gap: var(--measure-md); align-items: center; text-align: left; font: inherit; font-size: var(--text-md); font-weight: var(--weight-semibold);
  color: var(--color-muted); background: transparent; border: 0; border-radius: var(--radius-md); padding: var(--measure-md); cursor: pointer;
  transition: background 0.25s, color 0.25s, transform 0.3s var(--ease);
}
.steps__tab:hover { color: var(--color-ink); transform: translateX(4px); }
.steps__tab[aria-selected="true"] { background: var(--color-surface); color: var(--color-ink); box-shadow: var(--shadow-lift); }
.steps__num { flex: none; width: 34px; height: 34px; border-radius: var(--radius-round); display: grid; place-items: center; border: 1.5px solid var(--color-line); font-size: var(--text-xs); transition: all 0.3s var(--ease); }
.steps__tab[aria-selected="true"] .steps__num { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.steps__panel { min-height: 420px; padding: var(--space-panel-lg); display: flex; flex-direction: column; gap: var(--measure-lg); }
.steps__panel:not([hidden]) { animation: swap-in 0.45s var(--ease) both; }
.steps__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: start; gap: var(--measure-md); }
.steps__big { font-size: clamp(5rem, 9vw, 7.5rem); font-weight: var(--weight-bold); line-height: var(--leading-numeral); letter-spacing: -0.06em; color: var(--color-tint); }
.steps__panel p { font-size: var(--text-lg); color: var(--color-muted); max-width: 640px; }
.steps__controls { margin-top: auto; display: flex; gap: var(--measure-xs); }

@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr; gap: var(--measure-lg); }
  .steps__nav { position: static; flex-direction: row; overflow-x: auto; }
  .steps__tab { flex: none; }
}