:root {
  color-scheme: light;
  --ink: #142435;
  --muted: #5c6b78;
  --page: #ccc;
  --surface: #fff;
  --course-blue: #006697;
  --deep-blue: #004a70;
  --blue-soft: #e4f2f8;
  --green: #25845d;
  --gold: #b87912;
  --coral: #f06a4f;
  --line: #d4dce3;
  --shadow: 0 24px 70px rgba(0, 74, 112, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 76px;
  padding: 14px clamp(10px, 1.6vw, 24px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 8px;
  background: var(--course-blue);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 0.72rem;
}

.site-nav > ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 3px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-nav li {
  position: relative;
}

.site-nav a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 6px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-nav li:hover > a,
.site-nav li:focus-within > a {
  background: var(--blue-soft);
  color: var(--course-blue);
}

.site-nav ul ul {
  position: absolute;
  left: 0;
  top: 100%;
  display: none;
  min-width: 245px;
  max-height: min(70vh, 520px);
  padding: 8px;
  margin: 0;
  overflow: auto;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.site-nav ul ul::before {
  position: absolute;
  inset: -6px 0 auto;
  height: 6px;
  content: "";
}

.site-nav li:hover > ul,
.site-nav li:focus-within > ul {
  display: grid;
}

.site-nav > ul > li:nth-last-child(-n + 2) > ul {
  right: 0;
  left: auto;
}

.site-nav ul ul a {
  min-height: 38px;
  border-radius: 6px;
  color: var(--muted);
  font-weight: 600;
  white-space: normal;
}

.site-nav ul ul a:hover,
.site-nav ul ul a:focus {
  background: #f3f8fb;
  color: var(--ink);
}

main {
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(330px, 0.78fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(42px, 8vw, 96px) clamp(18px, 5vw, 72px) clamp(34px, 5vw, 64px);
  background:
    linear-gradient(115deg, rgba(0, 102, 151, 0.98) 0%, rgba(0, 74, 112, 0.94) 54%, rgba(204, 204, 204, 0.92) 54%),
    var(--page);
}

.hero-copy {
  max-width: 760px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-copy .eyebrow {
  color: #ffd0c2;
}

h1,
h2,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 6.2rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.intro {
  max-width: 590px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 2px solid transparent;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  background: #fff;
  color: var(--course-blue);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.42);
  color: #fff;
}

.agenda-preview {
  position: relative;
  margin: 0;
  padding: clamp(26px, 4vw, 42px);
  background: var(--surface);
  border: 1px solid rgba(0, 74, 112, 0.16);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.agenda-icon {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  margin-bottom: 24px;
  background: var(--blue-soft);
  border-radius: 8px;
}

.agenda-icon svg {
  display: block;
  width: 68px;
  height: 68px;
}

.agenda-preview h2 {
  max-width: 460px;
  color: var(--deep-blue);
}

.agenda-lead {
  max-width: 520px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.agenda-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.agenda-list li {
  position: relative;
  padding-left: 26px;
  color: var(--ink);
  font-weight: 700;
}

.agenda-list li::before {
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  background: var(--coral);
  border-radius: 50%;
  content: "";
}

.quick-links,
.resource-band {
  padding: clamp(44px, 7vw, 88px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.04;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.resource-card {
  display: grid;
  gap: 10px;
  min-height: 220px;
  padding: 24px;
  background: var(--surface);
  border-top: 5px solid var(--course-blue);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(20, 36, 53, 0.11);
}

.resource-card.accent-green {
  border-color: var(--green);
}

.resource-card.accent-gold {
  border-color: var(--gold);
}

.resource-card span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.resource-card strong {
  align-self: end;
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  line-height: 1.08;
}

.resource-card small {
  color: var(--muted);
  font-size: 0.98rem;
}

.resource-card:hover,
.resource-card:focus {
  transform: translateY(-3px);
  transition: transform 160ms ease;
}

.resource-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.7fr);
  gap: 28px;
  align-items: start;
  background: #fff;
  border-top: 1px solid var(--line);
}

.resource-list {
  display: grid;
  gap: 10px;
}

.resource-list a {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 12px 16px;
  background: #f6f8fb;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--deep-blue);
  font-weight: 800;
}

.resource-list a:hover,
.resource-list a:focus {
  border-color: var(--course-blue);
  color: var(--course-blue);
}

.course-switcher {
  padding: clamp(40px, 6vw, 72px) clamp(18px, 5vw, 72px);
  background: var(--page);
  border-top: 1px solid var(--line);
}

.course-switcher h2 {
  max-width: 760px;
  margin-bottom: 22px;
}

.course-button-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.course-button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  padding: 14px 18px;
  background: var(--course-blue);
  border: 2px solid var(--course-blue);
  border-radius: 8px;
  color: #fff;
  font-weight: 800;
  text-align: center;
}

.course-button:hover,
.course-button:focus {
  background: var(--deep-blue);
  border-color: var(--deep-blue);
}

@media (max-width: 1000px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav > ul {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    background: linear-gradient(180deg, var(--course-blue) 0%, var(--deep-blue) 66%, var(--page) 66%);
  }

  .hero-copy {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: relative;
  }

  .site-nav > ul {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .site-nav a {
    width: 100%;
    white-space: normal;
  }

  .site-nav ul ul {
    position: static;
    display: none;
    min-width: 0;
    max-height: none;
    margin: 0 0 8px 12px;
    box-shadow: none;
  }

  .site-nav li:hover > ul,
  .site-nav li:focus-within > ul {
    display: grid;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .link-grid,
  .resource-band,
  .course-button-list {
    grid-template-columns: 1fr;
  }

  .resource-card {
    min-height: 190px;
  }
}