:root {
  --yellow: #f9e02b;
  --blue: #224075;
  --navy: #1b1f5e;
  --text: #222;
  --link: #1f5f7a;
  --accent-red: #c8102e;
  --banner: #e8e9e9;
  --max: 1440px;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.55;
}

a { color: var(--link); }
a:hover, a:focus { color: var(--navy); }
:focus-visible { outline: 3px solid var(--navy); outline-offset: 2px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: .5rem 1rem;
  z-index: 10;
}
.skip-link:focus { left: 1rem; color: #fff; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Header */
.site-header { background: #fff; }
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: .5rem 1.25rem .5rem 3.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
}
.brand { display: flex; align-items: center; }
.brand img { height: 48px; width: auto; display: block; }
.nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.5rem;
  margin: 0;
  padding: 0;
}
.nav-list a {
  color: #2b3a67;
  font-weight: 700;
  text-decoration: none;
  padding-bottom: .1rem;
}
.nav-list a:hover,
.nav-list a:focus { text-decoration: underline; }
.nav-list a[aria-current="page"] {
  border-bottom: 2px solid var(--accent-red);
}

/* Layout */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: .75rem 1.75rem 2rem;
}

.hero {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-bottom: 1.25rem;
}
.logo {
  width: 153px;
  height: auto;
  margin-left: 2.5rem;
  flex-shrink: 0;
}
.contract-banner {
  flex: 1;
  background: var(--banner);
  text-align: center;
  padding: .25rem 1rem;
}
.contract-banner h1,
.contract-number {
  font-size: 1.1rem;
  font-weight: 700;
  margin: .4rem 0;
}
.contract-number { margin-top: 1rem; }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 8fr);
  gap: 3.5rem;
}

.col-left, .col-right { font-size: .85rem; }

h2, h3 { color: var(--navy); }
h2 { font-size: .95rem; margin: 0 0 .9rem; }
h3 { font-size: .95rem; color: var(--text); margin: 1.25rem 0 .25rem; }
.center { text-align: center; }

/* Contract info */
.contract-info { margin-top: 2.5rem; font-size: .95rem; }
.facts { margin: 0; }
.facts > div { margin: .1rem 0; }
.facts dt { display: inline; font-weight: 700; }
.facts dd { display: inline; margin: 0; }
.facts .stack dt,
.facts .stack dd { display: block; }
.facts .stack dd { margin-top: .4rem; word-break: break-all; }
.contact { margin: .3rem 0 .8rem; }

/* Fair opportunity */
.fair-opportunity h2 { font-size: .85rem; margin-bottom: .2rem; }
.fair-opportunity p,
.fair-opportunity ol { margin: 0 0 .2rem; }
.fair-opportunity ol { padding-left: 1.1rem; }

/* Bottom row */
.bottom-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
}
.contact-sewp { font-size: .95rem; padding-left: 2rem; }
.ordering-guide h2 a { color: var(--navy); text-decoration: none; }
.ordering-guide h2 a:hover,
.ordering-guide h2 a:focus { text-decoration: underline; }
.hint { font-weight: 400; font-style: italic; font-size: .75rem; color: var(--text); }
.ordering-guide p,
.ordering-guide ul { font-size: .78rem; margin: 0; }
.ordering-guide ul { list-style: none; padding: 0; margin-top: .2rem; }
.ordering-guide li { margin: .1rem 0; }

/* DT pages (About / Capabilities) */
.dt-page main {
  letter-spacing: .02em;
  color: #4a4a4a;
  line-height: 1.75;
  max-width: 1100px;
}
.dt-page h1,
.dt-page h2,
.dt-page h3 {
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .05em;
  line-height: 1.3;
}
.dt-page h1 { font-size: 2.25rem; font-weight: 500; margin: 2rem 0 .25rem; }
.dt-page h2 { font-size: 1.5rem; font-weight: 500; margin: 2.5rem 0 1rem; }
.dt-page h3 { font-size: 1.15rem; font-weight: 500; margin: 0 0 .5rem; }
.dt-page .eyebrow {
  color: var(--accent-red);
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: .1em;
  margin: 0;
}
.dt-page .lead { font-size: 1.1rem; }
.dt-page p { margin: 0 0 1rem; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.card {
  border-top: 4px solid var(--blue);
  background: #f6f7f9;
  padding: 1.25rem 1.5rem;
}
.card ul { margin: 0 0 1rem; padding-left: 1.1rem; }
.card a { font-weight: 400; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.steps .num { font-size: 2rem; color: var(--accent-red); font-weight: 500; line-height: 1; }

.cta {
  background: var(--blue);
  color: #fff;
  padding: 1.5rem 2rem;
  margin: 3rem 0 1rem;
}
.dt-page .cta h2 { color: #fff; margin-top: 0; }
.cta a { color: #fff; }

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; }
}

/* Footer */
.site-footer {
  border-top: 4px solid var(--blue);
  text-align: center;
  font-size: .8rem;
  padding: 1rem;
}

/* Responsive */
@media (max-width: 900px) {
  .header-inner { padding-left: 1.25rem; }
  .nav-list { gap: 1.25rem; padding-top: .5rem; }
  .brand img { height: 40px; }
  .hero { flex-direction: column; gap: 1rem; }
  .logo { margin-left: 0; }
  .contract-banner { width: 100%; }
  .grid, .bottom-row { grid-template-columns: 1fr; gap: 2rem; }
  .contact-sewp { padding-left: 0; }
}