:root {
  --stanford-cardinal: #8c1515;
  --stanford-cardinal-dark: #820000;
  --stanford-digital-red: #b1040e;
  --stanford-digital-blue: #006cb8;
  --stanford-digital-blue-dark: #00548f;
  --stanford-black: #2e2d29;
  --stanford-cool-grey: #53565a;
  --stanford-grey-20: #d5d5d4;
  --stanford-grey-10: #eaeaea;
  --stanford-warm-white: #fbfaf8;
}

html { scroll-behavior: smooth; }

body {
  color: var(--stanford-black);
  background: #fff;
}

body.wide-layout {
  margin: 0 !important;
  padding: 0 !important;
}

body h1,
body h2 {
  color: var(--stanford-cardinal);
}

body a { color: var(--stanford-digital-blue); }
body a:hover { color: var(--stanford-digital-blue-dark); }

body a:focus-visible,
body summary:focus-visible {
  outline: 3px solid var(--stanford-digital-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrapper > header h1 a {
  color: var(--stanford-cardinal);
  text-decoration: none;
}

.wrapper > header > img {
  border: 1px solid var(--stanford-grey-20);
  box-shadow: 0 10px 28px rgba(46, 45, 41, 0.1);
}

.wrapper > section p a:not(.site-button),
.wrapper > section li a,
.wide-content p a:not(.site-button),
.wide-content li a {
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.site-nav {
  box-sizing: border-box;
  width: 100%;
  margin: 0 0 40px;
  padding: 18px 0;
  border-bottom: 1px solid var(--stanford-grey-10);
  background: #fff;
}

.site-nav *,
.site-nav *::before,
.site-nav *::after { box-sizing: border-box; }

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 20px;
  border: 1px solid var(--stanford-grey-10);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 3px 9px rgba(46, 45, 41, 0.08);
  color: var(--stanford-black);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.site-nav__link:hover,
.site-nav__link.is-active {
  border-color: rgba(140, 21, 21, 0.45);
  background: #fff7f7;
  color: var(--stanford-cardinal);
}

.site-nav__link:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 13px rgba(46, 45, 41, 0.11);
}

.site-nav__link.is-active { box-shadow: inset 0 -2px 0 var(--stanford-cardinal); }

.wide-shell {
  max-width: none;
  margin: 0;
  padding: 0;
}

.wide-content-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.wide-content {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0 0 60px;
  float: none;
}

.site-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 20px;
  border: 1px solid rgba(140, 21, 21, 0.32);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 3px 9px rgba(46, 45, 41, 0.08);
  color: var(--stanford-cardinal);
  font-weight: 700;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.site-button:hover {
  border-color: var(--stanford-cardinal);
  background: #fff7f7;
  color: var(--stanford-cardinal-dark);
  transform: translateY(-1px);
  box-shadow: 0 5px 13px rgba(46, 45, 41, 0.11);
}

.section-actions {
  display: flex;
  justify-content: center;
  margin: 30px 0;
}

.section-actions--spacious { margin: 40px 0; }

.research-intro {
  margin: 40px 0;
  padding: 30px;
  border-left: 5px solid var(--stanford-cardinal);
  border-radius: 15px;
  background: linear-gradient(135deg, #fbfaf8 0%, #f3f1ee 100%);
  text-align: center;
}

.research-intro h2 {
  margin-top: 0;
  color: var(--stanford-cardinal);
  font-size: 1.4em;
}

.research-intro p {
  margin-bottom: 0;
  color: var(--stanford-cool-grey);
  font-size: 1.1em;
  font-style: italic;
}

.news-list { padding-left: 1.2rem; }
.news-list li { margin-bottom: 0.68rem; }

.news-archive {
  margin-top: 18px;
  padding: 0 18px;
  border: 1px solid var(--stanford-grey-20);
  border-radius: 12px;
  background: var(--stanford-warm-white);
}

.news-archive summary {
  padding: 14px 0;
  color: var(--stanford-cardinal);
  cursor: pointer;
  font-weight: 700;
}

.news-archive[open] summary { border-bottom: 1px solid var(--stanford-grey-10); }
.news-archive .news-list { margin: 16px 0; }

@media screen and (max-width: 640px) {
  .site-nav { margin-bottom: 30px; padding: 14px 0; }

  .site-nav__inner {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 0;
  }

  .site-nav__link {
    width: 100%;
    min-width: 0;
    padding: 9px 10px;
    font-size: 0.92rem;
  }

  .wide-content-wrap { padding: 0 16px; }
}

@media screen and (min-width: 961px) {
  .wrapper { width: 860px; }
  .wrapper > header { width: 230px; }
  .wrapper > section { width: calc(100% - 260px); }
  .wrapper > header ul.downloads,
  .wrapper > header .downloads { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}