/* ============================================================
   TraceFlow landing — baseline only.
   Intentionally minimal: legible defaults, no design opinion yet.
   Style pass lands next.
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #111;
  background: #fff;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
}

button,
.btn {
  font: inherit;
  cursor: pointer;
}

.container {
  max-width: 72ch;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

section {
  padding-block: 3rem;
  border-bottom: 1px solid #eee;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin-block: 0 0.75em;
}

p {
  margin-block: 0 1em;
}

ul,
ol {
  padding-inline-start: 1.25rem;
}

/* Buttons — placeholder, will be replaced in style pass */
.btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border: 1px solid #111;
  background: #111;
  color: #fff;
  text-decoration: none;
  margin-right: 0.5rem;
}

.btn-ghost {
  background: transparent;
  color: #111;
}