.nav-category { position: relative; }
.nav-category-heading { display: flex; align-items: center; }
.nav-overview-link { display: block; padding: 25px 0; }
.nav-overview-link:hover, .nav-overview-link[aria-current="page"] { color: var(--blue-700); }
.submenu-toggle { display: grid; place-items: center; width: 24px; min-height: 44px; padding: 0; border: 0; background: transparent; color: var(--cyan-500); font: inherit; cursor: pointer; }
.submenu-toggle:hover { color: var(--blue-700); }
.submenu-toggle:focus-visible, .nav-overview-link:focus-visible { outline: 2px solid var(--blue-700); outline-offset: 3px; }
.nav-category > .dropdown { top: 100%; }
.nav-category > .dropdown[hidden] { display: none; }
.overview-hero { padding: 38px 0 56px; background: #0b283d; color: white; }
.overview-breadcrumb { display: flex; gap: 14px; align-items: center; margin-bottom: 32px; color: #c3dce6; font-size: .9rem; }
.overview-breadcrumb a { text-decoration: underline; text-underline-offset: 3px; }
.overview-hero h1 { max-width: 850px; margin-top: 12px; font-size: clamp(2.3rem,4.5vw,4.2rem); line-height: 1.08; }
.overview-lead { max-width: 800px; color: #d4e4eb; font-size: 1.15rem; line-height: 1.7; margin: 24px 0; }
.overview-list { padding: 55px 0 65px; background: #e4eef1; }
.overview-context { padding: 45px 0; background: #fff; }
.overview-context h2 { font-size: 1.8rem; margin-bottom: 18px; }
.overview-context p { max-width: 900px; color: #385363; line-height: 1.75; }
.overview-context a { color: #076a58; text-decoration: underline; text-underline-offset: 3px; }
.overview-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.overview-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid #b8d0da; border-radius: 16px; background: #fff; box-shadow: 0 9px 24px #0625410b; }
.overview-card:nth-child(3n+2) { background: #eef8f6; }
.overview-card-image { height: 178px; background: #d6e7ec; overflow: hidden; }
.overview-card-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
.overview-card-image img[src$="/david-hartley.webp"] { object-fit: contain; background: #fff; }
.overview-card-image.logo { display: flex; align-items: center; justify-content: center; padding: 35px 42px; background: #f8faf9; border-bottom: 1px solid #d6e7ec; }
.overview-card-image.logo.dark { background: #0d3046; }
.overview-card-image.logo img { object-fit: contain; max-height: 90px; }
.overview-card-copy { display: flex; flex-direction: column; flex: 1; padding: 26px; }
.overview-tag { color: #08776a; text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; line-height: 1.5; font-weight: 800; margin: 0 0 12px; }
.overview-card h2 { font-size: 1.45rem; line-height: 1.2; margin: 0 0 16px; }
.overview-card h2 a:hover { color: #08776a; }
.overview-card-copy > p:not(.overview-tag) { color: #385363; font-size: 1rem; line-height: 1.7; margin: 0 0 24px; }
.overview-card-link { margin-top: auto; padding-top: 15px; border-top: 1px solid #ccdde3; font-weight: 800; font-size: .93rem; color: #076a58; }
.overview-card-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.overview-card-link span { float: right; }
.overview-route { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 36px; padding: 32px; border: 1px solid #b7d5ce; border-left: 6px solid #087a55; border-radius: 16px; background: #f5fbf3; }
.overview-route h2 { font-size: 1.8rem; line-height: 1.2; margin: 0 0 12px; }
.overview-route p:last-child { max-width: 730px; color: #385363; margin: 0; }
.overview-route > .button { flex-shrink: 0; }
@media (max-width: 1040px) { .overview-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 820px) {
  .nav-category-heading { border-bottom: 1px solid var(--line); justify-content: space-between; }
  .nav-overview-link { padding: 15px 0; flex: 1; font-size: 1rem; }
  .submenu-toggle { width: 44px; min-height: 48px; border-left: 1px solid var(--line); font-size: 1.2rem; }
  .nav-category > .dropdown { position: static; width: 100%; }
  .overview-route { align-items: flex-start; flex-direction: column; gap: 22px; }
}
@media (max-width: 560px) {
  .overview-grid { grid-template-columns: minmax(0,1fr); }
  .overview-hero { padding: 28px 0 40px; }
  .overview-list { padding: 30px 0 40px; }
  .overview-card-copy, .overview-route { padding: 23px; }
}