/* Public landing page of the SureCost developer portal. Neutral placeholder styling: the visual design
   (brand colors, type, imagery) is marketing's decision (see index.html). System fonts only: the page makes no
   third-party requests. */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --text: #1b1f24;
  --muted: #57606a;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --border: #d8dee4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --bg-alt: #161c23;
    --text: #e6edf3;
    --muted: #9da7b3;
    --accent: #5b9cf0;
    --accent-text: #0f1419;
    --border: #2d3640;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

.site-header { border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.1rem; }
.brand-sub { font-weight: 400; color: var(--muted); }
.header-nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.header-nav a:not(.button) { color: var(--text); text-decoration: none; }

.hero { padding: 72px 0 56px; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.2; margin: 0 0 16px; max-width: 20ch; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; margin: 0 0 28px; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--accent);
}
.button-secondary { background: transparent; color: var(--accent); }

.section { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section h2 { margin: 0 0 24px; font-size: 1.6rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 20px; background: var(--bg); }
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); }

.steps { padding-left: 1.2rem; max-width: 70ch; }
.steps li { margin-bottom: 12px; }
.note { color: var(--muted); max-width: 70ch; }

.site-footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }