:root {
  /* Palette — locked in step 3, WCAG AA/AAA verified pairings only */
  --navy: #10233F;      /* primary / dark section bg */
  --forest: #1F4D3A;    /* secondary accent */
  --burgundy: #6E1F2A;  /* primary accent / CTA */
  --cream: #F5F1E8;     /* light surface */
  --charcoal: #2B2B28;  /* body text on light */
  --muted-on-navy: #C9CCD4;
  --on-burgundy: #FAECE7;
  --on-forest: #EAF3DE;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1100px;
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--cream);
  color: var(--charcoal);
  line-height: 1.6;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--navy);
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }

p { margin: 0 0 1em; max-width: 60ch; }
ul { margin: 0 0 1em; padding-left: 1.2em; max-width: 60ch; }
li { margin-bottom: 0.4em; }

a { color: var(--navy); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, label:focus-visible {
  outline: 3px solid var(--forest);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: var(--cream);
  padding: 12px 20px;
  z-index: 100;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* --- Nav --- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  position: relative;
}
.site-nav__brand { font-weight: 700; text-decoration: none; color: var(--navy); font-size: 18px; }
.site-nav__links { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; }
.site-nav__links a { text-decoration: none; font-weight: 500; color: var(--charcoal); font-size: 15px; transition: color 0.15s ease; }
.site-nav__links a:hover { color: var(--navy); }

.nav-toggle { display: none; }
.nav-toggle__label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle__label span { width: 24px; height: 2px; background: var(--navy); display: block; }

@media (max-width: 700px) {
  .nav-toggle__label { display: flex; }
  .site-nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(16,35,63,0.1);
  }
  .nav-toggle:checked ~ .site-nav__links { display: flex; }
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  border-radius: var(--radius);
  padding: 12px 22px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
}
.btn--primary { background: var(--burgundy); color: var(--on-burgundy); transition: opacity 0.15s ease; }
.btn--primary:hover { opacity: 0.85; }
.btn--secondary { background: var(--forest); color: var(--on-forest); transition: opacity 0.15s ease; }
.btn--secondary:hover { opacity: 0.85; }

/* --- Sections --- */
.section { padding: 64px 0; }
.section--dark { background: var(--navy); color: var(--cream); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--cream); }
.section--dark p { color: var(--muted-on-navy); }

/* NOTE: do not place --burgundy or --forest text directly on --navy,
   or --navy text directly on --burgundy/--forest — untested pairing, likely fails contrast. */

.hero { text-align: center; padding: 96px 0 64px; }

.proof-grid, .case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 700px) {
  .proof-grid, .case-grid { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  border: 1px solid rgba(16,35,63,0.08);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
a.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16,35,63,0.1);
}

.role-block {
  border-left: 3px solid var(--forest);
  padding-left: 20px;
  margin-bottom: 28px;
}

.site-footer {
  padding: 32px 0;
  font-size: 14px;
  color: var(--charcoal);
  border-top: 1px solid rgba(16,35,63,0.1);
}
.site-footer a { color: var(--charcoal); }

/* --- Contact form --- */
.contact-form { display: flex; flex-direction: column; gap: 14px; max-width: 480px; margin: 0 auto; }
.contact-form input, .contact-form textarea {
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(16,35,63,0.2);
}
.contact-form button { cursor: pointer; border: none; font-family: var(--font-sans); }