:root {
  --brand-900: #082b66;
  --brand-700: #0b3d91;
  --brand-500: #1f66cc;
  --brand-100: #eaf2ff;
  --accent: #16a085;
  --ink: #172033;
  --muted: #5f6b7a;
  --surface: #ffffff;
  --surface-alt: #f5f8fc;
  --border: #dfe7f1;
  --warning-bg: #fff8e7;
  --warning-border: #e6b94f;
  --shadow-sm: 0 8px 24px rgba(15, 45, 82, .08);
  --shadow-md: 0 18px 48px rgba(15, 45, 82, .13);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --max-width: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-700); }
a:hover { color: var(--brand-900); }
button, input, select { font: inherit; }

h1, h2, h3 { line-height: 1.16; letter-spacing: -.025em; margin-top: 0; }
h1 { font-size: clamp(2.45rem, 6vw, 5rem); }
h2 { font-size: clamp(1.85rem, 3.5vw, 3rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1rem; }
ul { padding-left: 1.25rem; }

.container { width: min(calc(100% - 2rem), var(--max-width)); margin-inline: auto; }
.narrow { max-width: 820px; }
.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-alt { background: var(--surface-alt); }
.section-heading { max-width: 780px; margin-bottom: 2rem; }
.section-heading p { color: var(--muted); font-size: 1.08rem; }
.eyebrow { margin-bottom: .7rem; color: var(--brand-500); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.lead { font-size: clamp(1.05rem, 2vw, 1.35rem); color: #31405a; }
.muted { color: var(--muted); }

.skip-link { position: fixed; top: -80px; left: 1rem; z-index: 9999; padding: .75rem 1rem; background: var(--brand-900); color: white; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 3px solid #f2b84b; outline-offset: 3px; }

@media (max-width: 680px) {
  .section { padding: 3.5rem 0; }
}