:root{
  --text-strong: #1e1e1e;
  --border-hair: rgba(0,0,0,.06);
  --shadow-ambient: 0 1px 3px rgba(0,0,0,.06);
  --shadow-key: 0 6px 16px rgba(0,0,0,.08);
}
body{ color: var(--text-strong); }
.border-hair{ border: 1px solid var(--border-hair); }
.shadow-ambient{ box-shadow: var(--shadow-ambient); }
.shadow-elevated{ box-shadow: var(--shadow-ambient), var(--shadow-key); }