:root { --nav-h: 64px; --foundation-ink: #111113; --foundation-blue: #2365ec; --paper: #faf9f5; --paper-shade: #f0eee6; --soft: var(--paper-shade); }
html { scroll-padding-top: calc(var(--nav-h) + 20px); }
html, body { background: var(--paper); }
.site-header { background: rgba(250,249,245,.96); }
.header-inner { gap: 6px; justify-content: flex-start; }
.brand { min-width: 0; gap: 0; margin-right: auto; font-size: 20px; font-weight: 720; letter-spacing: -.045em; }
.nav { margin-left: 0; gap: 0; color: #20201e; }
.nav > a, .nav-dropdown-toggle { padding-inline: 12px; gap: 5px; font-size: 15px; font-weight: 600; }
.nav > a[aria-current="page"], .mobile-primary-link[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1.5px; }
.nav-dropdown-menu, .mobile-panel, .lang-menu { background: var(--paper); }
.header-quick-links { min-width: 0; width: auto; margin-left: 4px; gap: 0; flex: 0 0 auto; }
.header-quick-links .github-link { width: 36px; padding: 6px; }
.github-link img { display: block; width: 24px; height: auto; }
.footer-social .social-icon img { display: block; width: 20px; height: auto; }
.lang-switcher { margin-left: 0; }
.lang-button { min-width: 40px; color: var(--ink); }
.lang-button .lang-globe { width: 24px; height: 24px; }
.nav > a:focus-visible, .nav-dropdown-toggle:focus-visible, .lang-button:focus-visible { outline: 2px solid #2365ec; outline-offset: -5px; }

.nav-primary-link { display: flex; align-items: center; gap: 5px; height: var(--nav-h); padding: 0 4px 0 12px; color: inherit; font-size: 15px; font-weight: 600; }
.nav-primary-link[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1.5px; }
.nav-primary-link:focus-visible { outline: 2px solid var(--ink); outline-offset: -5px; }
.nav-dropdown-toggle { justify-content: center; width: 22px; padding: 0; }
.nav-item-chevron { width: 10px; height: 10px; transition: transform .18s ease; }
.nav-dropdown.open .nav-item-chevron { transform: rotate(180deg); }
.nav-dropdown:not(.open) .nav-dropdown-menu { opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-8px); }
.nav-dropdown-menu { max-height: calc(100dvh - var(--nav-h)); overflow-y: auto; }
.mega-inner { grid-template-columns: minmax(0,1.15fr) repeat(2,minmax(0,1fr)); }
.mega-lead p { max-width: 34ch; margin: 18px 0 0; color: var(--text); font-size: 15px; line-height: 1.8; word-break: keep-all; }
.mega-links a { padding-block: 4px; }
.nav-dropdown-menu a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; }
.nav-dropdown-menu a:focus-visible { color: var(--ink); outline: 2px solid var(--ink); outline-offset: 4px; }
.mobile-category-row { display: flex; align-items: center; gap: 12px; }
.mobile-category-row .mobile-primary-link { min-height: 44px; flex: 1; }
.mobile-submenu-toggle { flex: 0 0 44px; width: 44px; min-height: 44px; justify-content: center; }
.mobile-submenu-toggle:focus-visible, .mobile-category-row .mobile-primary-link:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.mobile-columns-inner { grid-template-columns: repeat(2,minmax(0,1fr)); }
@media (max-width: 600px) { .mobile-columns-inner { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .nav-item-chevron { transition: none; } }



.institution-about, .institution-learning, .institution-community { padding: 106px 0; }
.institution-split { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 100px; }
.institution-split h2 { margin: 0; color: var(--foundation-ink); font-size: clamp(35px, 3.8vw, 52px); font-weight: 550; line-height: 1.24; letter-spacing: -.035em; word-break: keep-all; }
.institution-copy { padding-top: 37px; }
.institution-copy > p { margin: 0 0 22px; color: #475362; font-size: 17px; line-height: 1.95; word-break: keep-all; }
.institution-copy > .institution-affiliation { margin-top: 32px; padding-top: 22px; border-top: 1px solid #dfe5ec; color: #687686; font-size: 12px; }
.institution-affiliation a { display: inline-block; color: #175cc8; }
.institution-projects { background: #f4f6f9; border-top: 1px solid #e5eaf0; border-bottom: 1px solid #e5eaf0; }
.institution-projects .section-head { grid-template-columns: minmax(180px,.42fr) minmax(0,1fr); }
.institution-projects h2 { color: var(--foundation-ink); font-weight: 570; font-size: clamp(32px,3.7vw,48px); }
.institution-projects .section-head p:not(.section-index) { max-width: 700px; color: #576371; font-size: 17px; }
.institution-projects .section-head .section-index { margin: 9px 0 0; color: #496886; font-size: 11px; }
.institution-learning { background: #eef5f4; }
.learning-lead { max-width: 470px; margin: 26px 0 0; color: #4c6566; font-size: 17px; line-height: 1.9; word-break: keep-all; }
.learning-resources { display: grid; gap: 22px; }
.learning-resources a { position: relative; display: block; padding: 25px 42px 25px 0; border-bottom: 1px solid #b9cfcd; }
.learning-resources a:first-child { padding-top: 0; }
.learning-resources h3 { margin: 0 0 12px; color: #163e42; font-size: 26px; line-height: 1.3; font-weight: 570; letter-spacing: -.02em; }
.learning-resources p { margin: 0; color: #4c6566; font-size: 15px; line-height: 1.8; word-break: keep-all; }
.resource-arrow { position: absolute; top: 50%; right: 0; color: #23696c; font-size: 30px; }
.learning-resources a:hover h3 { color: #14778b; }
.institution-community { background: var(--paper); }
.participation-copy { margin: 37px 0 24px; color: #475362; font-size: 17px; line-height: 1.95; word-break: keep-all; }
.participation-links a { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 0; color: #153b71; border-bottom: 1px solid #dbe2eb; font-size: 16px; font-weight: 550; }
.participation-links a span { font-size: 21px; }
.participation-links a:hover { color: #2365ec; }
.institution-about a:focus-visible, .institution-learning a:focus-visible, .institution-community a:focus-visible { outline: 2px solid #2365ec; outline-offset: 5px; }

.foundation-footer { padding: 62px 0 25px; background: var(--company); color: #fff; border-top: 0; }
.footer-identity { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,.22); }
.foundation-footer .footer-brand { display: inline-block; color: #fff; font-size: 37px; font-weight: 680; line-height: 1.2; letter-spacing: -.045em; }
.foundation-footer .footer-identity p { max-width: 540px; margin-top: 13px; color: rgba(255,255,255,.78); font-size: 15px; }
.foundation-footer .footer-identity .footer-affiliation { color: rgba(255,255,255,.70); font-size: 12px; }
.foundation-footer .footer-social { margin-top: 6px; gap: 12px; }
.foundation-footer .social-icon { border-color: rgba(255,255,255,.3); border-radius: 0; }
.footer-map { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: 24px; padding: 38px 0 18px; }
.footer-map-group { min-width: 0; }
.footer-map-group h3 { margin: 0 0 20px; color: #fff; font-size: 13px; font-weight: 600; letter-spacing: 0; }
.footer-map ul, .sitemap-groups ul { list-style: none; padding: 0; margin: 0; }
.footer-map li { margin-bottom: 11px; }
.foundation-footer .footer-map a { color: rgba(255,255,255,.78); font-size: 12px; line-height: 1.7; word-break: keep-all; }
.foundation-footer a:hover { color: #fff; }
.foundation-footer a:focus-visible { outline: 2px solid #a3c6ff; outline-offset: 4px; }
.foundation-footer .footer-rights { border-color: rgba(255,255,255,.22); margin-top: 26px; padding-top: 24px; color: rgba(255,255,255,.70); }
.foundation-footer .footer-rights a { color: rgba(255,255,255,.78); font-size: 12px; font-weight: 400; }
.footer-language { display: flex; gap: 20px; }

.sitemap-main { padding: 80px 0 100px; }
.sitemap-main h1 { margin: 0 0 24px; font-size: 58px; letter-spacing: -.035em; font-weight: 570; }
.sitemap-lead { max-width: 660px; margin-bottom: 60px; color: #586575; font-size: 18px; line-height: 1.8; }
.sitemap-groups { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 50px 60px; }
.sitemap-groups section { border-top: 2px solid #1c365a; padding-top: 20px; }
.sitemap-groups h2 { margin: 0 0 20px; font-size: 22px; font-weight: 600; }
.sitemap-groups li { margin: 0 0 12px; }
.sitemap-groups a { color: #355b87; font-size: 15px; }
.sitemap-groups a:hover { text-decoration: underline; text-underline-offset: 4px; }
.sitemap-groups a:focus-visible { outline: 2px solid #2365ec; outline-offset: 4px; }

@media (max-width: 1100px) {
  .institution-split { gap: 50px; }
  .footer-map { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 32px 38px; }
}
@media (max-width: 980px) {
  .header-quick-links { margin-left: auto; }
  .header-inner { gap: 6px; }
  .brand { font-size: 19px; }
  .institution-projects .section-head { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .institution-about, .institution-learning, .institution-community { padding-block: 78px; }
}
@media (max-width: 700px) {
  :root { --nav-h: 58px; }
  .header-inner { padding-inline: 17px; }
  .institution-split { grid-template-columns: minmax(0,1fr); gap: 30px; }
  .institution-about, .institution-learning, .institution-community { padding-block: 64px; }
  .institution-split h2 { font-size: 35px; }
  .institution-copy { padding-top: 0; }
  .institution-copy > p, .learning-lead, .participation-copy { font-size: 15px; line-height: 1.9; }
  .participation-copy { margin-top: 0; }
  .learning-resources h3 { font-size: 23px; }
  .institution-projects .section-head p:not(.section-index) { font-size: 15px; }
  .foundation-footer { padding-top: 44px; }
  .footer-identity { flex-direction: column; gap: 22px; padding-bottom: 30px; }
  .foundation-footer .footer-brand { font-size: 32px; }
  .foundation-footer .footer-identity p { font-size: 14px; }
  .footer-map { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 27px 24px; padding-top: 30px; }
  .footer-map-group h3 { margin-bottom: 17px; }
  .foundation-footer .footer-rights { gap: 17px; }
  .sitemap-main { padding: 54px 0 70px; }
  .sitemap-main h1 { font-size: 43px; }
  .sitemap-lead { font-size: 16px; margin-bottom: 36px; }
  .sitemap-groups { grid-template-columns: minmax(0,1fr); gap: 34px; }
}

/* Preserve the existing PCCX artwork; keep the approved header/footer geometry. */
.brand .pccx-official-wordmark { display: block; width: 82px; height: auto; }
.footer-brand .pccx-official-wordmark { display: block; width: 128px; height: auto; filter: invert(1); }
.hero--mark, .hero--mark .pccx-hero-center, .institution-projects { background: var(--paper); }
.institution-projects .section-head { display: block; }
.institution-copy { padding-top: 0; }
.participation-copy { margin-top: 0; }
.institution-learning { background: var(--soft); }
.institution-affiliation a, .learning-resources a, .learning-resources h3,
.learning-resources a:hover h3, .resource-arrow, .participation-links a,
.participation-links a:hover, .sitemap-groups a { color: var(--ink); }
.learning-lead, .learning-resources p { color: var(--text); }
.learning-resources a { border-bottom-color: var(--line); }

.section-page-hero { padding: 80px 0 58px; border-bottom: 1px solid var(--line); }
.section-page-hero h1 { max-width: 900px; margin: 0; color: var(--ink); font-size: clamp(40px, 5vw, 64px); font-weight: 600; line-height: 1.15; letter-spacing: -.035em; word-break: keep-all; }
.section-page-hero p { max-width: 760px; margin: 24px 0 0; color: var(--text); font-size: 18px; line-height: 1.8; word-break: keep-all; }
.section-page-links { padding-block: 0 82px; }
.section-page-links a { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 22px; border-top: 1px solid var(--line); color: var(--ink); font-size: 18px; }
.section-page-links a:hover { text-decoration: underline; text-underline-offset: 5px; }
.section-page-links a:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; }
.section-page-projects { padding-block: 68px 90px; }
@media (max-width: 700px) {
  .section-page-hero { padding: 54px 0 40px; }
  .section-page-hero p { margin-top: 20px; font-size: 16px; }
  .section-page-links { padding-bottom: 58px; }
  .section-page-projects { padding-block: 46px 64px; }
}