:root {
  color-scheme: light;
  --navy: #0a1d3d;
  --blue: #182e9e;
  --green: #1c7b4d;
  --orange: #ff6a00;
  --ink: #292929;
  --ink-soft: #5e5e5a;
  --stone: #7a7a73;
  --paper: #ececec;
  --surface: #ffffff;
  --line: #d4d4cd;
  --periwinkle: #8c96ce;
  --sky: #3fc1e0;
  --support-mint: #6fcb9b;
  --radius-sm: 0.15rem;
  --radius-lg: 0.25rem;
  --shadow: 0 14px 36px rgba(10, 29, 61, 0.08);
  font-family: "IBM Plex Sans", Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 1rem;
  line-height: 1.55;
}

button, a { font: inherit; }
a { color: inherit; }
button { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: white;
  background: var(--navy);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  padding: 1rem max(1.25rem, calc((100vw - 76rem) / 2));
  background: var(--navy);
  color: white;
}

.brand {
  display: inline-flex;
  gap: 1rem;
  align-items: center;
  color: white;
  text-decoration: none;
}

.brand img {
  display: block;
  width: 9.5rem;
  height: auto;
}

.academy-label {
  padding-left: 1rem;
  border-left: 1px solid var(--periwinkle);
  color: var(--periwinkle);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

main { overflow: hidden; }

.intro,
.curriculum,
.certification-note,
.checklist,
footer {
  width: min(76rem, calc(100% - 2.5rem));
  margin-inline: auto;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 25rem);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  padding: clamp(3rem, 5vw, 4.5rem) 0 clamp(3rem, 5vw, 4rem);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--green);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3, p { overflow-wrap: break-word; }
h1, h2, h3 { margin-top: 0; color: var(--navy); line-height: 1.05; letter-spacing: -0.02em; }

h1 {
  margin-bottom: 1.35rem;
  max-width: 18ch;
  font-size: clamp(2.75rem, 5vw, 4rem);
  font-weight: 700;
}

h2 { margin-bottom: 0.8rem; font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 700; }
h3 { margin-bottom: 0.6rem; font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 600; }

.lede {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.35rem;
  align-items: center;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.72rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
}

.button-primary { color: white; background: var(--blue); }
.button-primary:hover { background: var(--navy); }
.button-secondary { color: white; background: var(--navy); }
.button-secondary:hover { background: var(--blue); }
.button-quiet { color: white; background: transparent; border-color: var(--periwinkle); }
.button-quiet:hover { border-color: white; color: white; }

.text-link {
  color: var(--blue);
  font-weight: 600;
  text-underline-offset: 0.25rem;
}

.intro-system {
  background: var(--navy);
  box-shadow: var(--shadow);
}

.program-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: transparent;
  color: white;
  border-bottom: 1px solid rgba(140, 150, 206, 0.45);
}

.program-summary div { padding: 1.5rem 0.75rem; text-align: center; }
.program-summary div + div { border-left: 1px solid rgba(140, 150, 206, 0.45); }
.program-summary strong { display: block; color: var(--support-mint); font-size: 2.1rem; line-height: 1; }
.program-summary span {
  display: block;
  margin-top: 0.5rem;
  color: white;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  line-height: 1.35;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.progression-device {
  margin: 0;
  padding: 1.15rem 1.25rem 1rem;
}

.progression-device img { display: block; width: 100%; height: auto; }
.progression-device figcaption {
  margin-top: 0.25rem;
  color: var(--periwinkle);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.curriculum {
  margin-bottom: clamp(4rem, 8vw, 7rem);
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--surface);
  border-top: 4px solid var(--blue);
  border-radius: 0;
  box-shadow: var(--shadow);
}

.section-heading {
  display: flex;
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.section-heading h2 { margin: 0; }
.section-heading > p { max-width: 30rem; margin: 0; color: var(--ink-soft); }

.day-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.day-tab {
  min-height: 8rem;
  padding: 1.1rem;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease;
}

.day-tab:hover { border-color: var(--blue); }
.day-tab[aria-selected="true"] { color: white; background: var(--blue); border-color: var(--blue); }
.day-tab[aria-selected="true"] .day-number { color: white; }
.day-number, .day-title, .day-range { display: block; }
.day-number {
  margin-bottom: 0.65rem;
  color: var(--green);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.day-title { color: var(--navy); font-size: 1rem; font-weight: 600; line-height: 1.2; }
.day-range { margin-top: 0.5rem; color: var(--stone); font-family: "IBM Plex Mono", monospace; font-size: 0.875rem; }
.day-tab[aria-selected="true"] .day-title,
.day-tab[aria-selected="true"] .day-range { color: white; }

.day-panel { scroll-margin-top: 1rem; }

.day-brief {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 29rem);
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.day-brief h3, .day-brief p { margin-bottom: 0; }
.day-brief > p { color: var(--ink-soft); }

.module-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

.module-card {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: white;
}

.module-index {
  display: grid;
  place-items: center;
  align-self: start;
  width: 3.25rem;
  height: 3.25rem;
  border-left: 3px solid var(--blue);
  border-radius: 0;
  color: var(--blue);
  background: var(--paper);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.9rem;
  font-weight: 500;
}

.module-meta { margin: 0 0 0.55rem; color: var(--green); font-family: "IBM Plex Mono", monospace; font-size: 0.78rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }
.module-card h4 { margin: 0; color: var(--navy); font-size: 1.18rem; font-weight: 600; line-height: 1.25; }
.module-description { margin: 0.75rem 0 0; color: var(--ink-soft); font-size: 1rem; }
.module-demonstrate { margin: 0.75rem 0 0; font-size: 0.9rem; }

.module-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1.15rem; }
.module-actions .button { min-height: 2.65rem; padding: 0.55rem 0.8rem; font-size: 0.88rem; }
.assessment-link { color: var(--blue); background: white; border-color: var(--blue); }
.assessment-link:hover { color: white; background: var(--navy); border-color: var(--navy); }

.certification-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.5rem;
  margin-bottom: clamp(4rem, 8vw, 7rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  color: white;
  background: var(--navy);
  border-radius: 0;
}

.certification-note .eyebrow { color: var(--periwinkle); }
.certification-note h2 { max-width: 24ch; color: white; font-size: clamp(1.65rem, 3vw, 2.5rem); }
.certification-note p:last-child { max-width: 60rem; margin-bottom: 0; color: white; }

.note-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--periwinkle);
  border-radius: 0;
  color: white;
  background: var(--blue);
  font-size: 1.3rem;
  font-weight: 600;
}

.checklist {
  margin-bottom: 5rem;
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--surface);
  border-radius: 0;
  box-shadow: var(--shadow);
}

.checklist-intro { max-width: 50rem; margin: -0.5rem 0 1.75rem; color: var(--ink-soft); }
.checklist-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 43rem; }
th, td { padding: 0.9rem 0.75rem; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--ink-soft); font-family: "IBM Plex Mono", monospace; font-size: 0.75rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }
td:first-child { width: 46%; font-weight: 700; }
.check-cell { width: 5.25rem; text-align: center; }
.check-box { display: inline-block; width: 1.1rem; height: 1.1rem; border: 1.5px solid var(--stone); }

.signoff { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 2.5rem; }
.signoff span { min-height: 3rem; padding-top: 1.7rem; border-bottom: 1px solid var(--ink); color: var(--ink-soft); font-size: 0.82rem; }

footer {
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 0 2.5rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  font-family: "IBM Plex Mono", monospace;
}

@media (max-width: 800px) {
  .intro { grid-template-columns: 1fr; gap: 2.5rem; }
  .program-summary { max-width: 30rem; }
  .section-heading, .day-brief { display: block; }
  .section-heading > p, .day-brief > p { margin-top: 0.8rem; }
  .module-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .site-header { min-height: 4.5rem; }
  .button-quiet { min-height: 2.65rem; padding-inline: 0.7rem; font-size: 0.875rem; }
  .intro, .curriculum, .certification-note, .checklist, footer { width: min(100% - 1.25rem, 76rem); }
  .intro { padding-top: 3rem; }
  h1 { font-size: clamp(2.55rem, 13vw, 4rem); }
  .curriculum, .checklist { padding: 1.25rem; }
  .day-tabs { grid-template-columns: 1fr; gap: 0.5rem; }
  .day-tab { display: grid; grid-template-columns: 4rem 1fr auto; gap: 0.75rem; align-items: center; min-height: 4.35rem; padding: 0.8rem; }
  .day-number, .day-range { margin: 0; }
  .day-range { text-align: right; }
  .module-card { grid-template-columns: 2.75rem minmax(0, 1fr); padding: 1.1rem; }
  .module-index { width: 2.75rem; height: 2.75rem; }
  .module-actions { display: grid; }
  .certification-note { grid-template-columns: 1fr; }
  .checklist-heading .button { width: 100%; margin-top: 1.2rem; }
  .signoff { grid-template-columns: 1fr; gap: 0.5rem; }
  footer { display: grid; gap: 0.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

@media print {
  @page { margin: 0.55in; }
  body { background: white; color: black; font-size: 10pt; }
  .site-header, .intro, .curriculum, .certification-note, footer, .checklist-heading .button, .checklist-intro { display: none !important; }
  main { overflow: visible; }
  .checklist { width: 100%; margin: 0; padding: 0; box-shadow: none; }
  .checklist .section-heading { display: block; margin-bottom: 1rem; }
  .checklist .eyebrow { color: black; }
  .checklist h2 { font-size: 22pt; }
  .checklist-table-wrap { overflow: visible; }
  table { min-width: 0; }
  th, td { padding: 0.45rem; }
  .signoff { margin-top: 1.5rem; }
}