/* Phase 1 backdrop
   Calmer background, crisper type rendering, subtle hr.
   No borders removed here. No component overrides.
*/
html { font-size: 100%; -webkit-text-size-adjust: 100%; }
body {
  background: var(--surface-0);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: var(--fs-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, .h1 { font-size: var(--fs-h1); line-height: 1.2; font-weight: 700; margin: var(--s-24) 0 var(--s-12); }
h2, .h2 { font-size: var(--fs-h2); line-height: 1.3; font-weight: 700; margin: var(--s-20) 0 var(--s-8); }
small, .micro { font-size: var(--fs-micro); color: var(--muted); }

hr {
  border: 0;
  height: 1px;
  margin: var(--s-16) 0;
  background: linear-gradient(90deg, transparent, var(--hairline), transparent);
}

/* Links keep current palette; hover stays subtle */
a { color: inherit; text-decoration-color: color-mix(in oklab, var(--text) 30%, transparent); }
a:hover { text-decoration-color: var(--text); }

/* Inputs and buttons untouched in this phase */