:root {
  --ink: #173044;
  --muted: #5f7080;
  --paper: #f7fbfd;
  --line: #d9e5ec;
  --cyan: #08aee3;
  --aqua: #62d9d1;
  --blue: #0798d2;
  --brand-mid: #176f9f;
  --blue-dark: #0d4f78;
  --green: #28bca9;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(22, 53, 73, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  background: var(--paper);
  line-height: 1.5;
}

main {
  flex: 1 0 auto;
}

body.site-background-watermark {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(247, 251, 253, 0.38), rgba(247, 251, 253, 0.38)),
    url("assets/lesson-map-watermark.png");
  background-image:
    linear-gradient(rgba(247, 251, 253, 0.38), rgba(247, 251, 253, 0.38)),
    image-set(
      url("assets/lesson-map-watermark.webp") type("image/webp"),
      url("assets/lesson-map-watermark.png") type("image/png")
    );
  background-attachment: fixed;
  background-position: center top;
  background-repeat: repeat-y;
  background-size: min(1800px, 150vw) auto;
}

body.site-background-watermark--home {
  background-image:
    linear-gradient(rgba(247, 251, 253, 0.56), rgba(247, 251, 253, 0.56)),
    url("assets/lesson-map-watermark.png");
  background-image:
    linear-gradient(rgba(247, 251, 253, 0.56), rgba(247, 251, 253, 0.56)),
    image-set(
      url("assets/lesson-map-watermark.webp") type("image/webp"),
      url("assets/lesson-map-watermark.png") type("image/png")
    );
}

body.site-background-watermark .site-header {
  background: #f7fbfd;
}

body.site-background-watermark--home .hero {
  background:
    linear-gradient(90deg, rgba(247, 251, 253, 0.96) 0%, rgba(247, 251, 253, 0.86) 44%, rgba(247, 251, 253, 0.52) 100%),
    image-set(
      url("assets/lesson-map-watermark.webp") type("image/webp"),
      url("assets/lesson-map-watermark.png") type("image/png")
    ) center top / min(1800px, 150vw) auto repeat-y,
    url("assets/image1.png") center / cover no-repeat;
}

body.site-background-watermark--home .modules-section,
body.site-background-watermark--home .tools-section {
  background: rgba(255, 255, 255, 0.84);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
  padding: 10px clamp(18px, 5vw, 72px);
  background: rgba(247, 251, 253, 0.92);
  border-bottom: 1px solid rgba(217, 229, 236, 0.8);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: min(220px, 54vw);
}

.brand img {
  width: 100%;
  height: auto;
  display: block;
}

.nav-toggle {
  display: none;
}

.module-nav {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 6px;
}

.module-nav a,
.nav-group summary {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--blue-dark);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  list-style: none;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.nav-group summary::after {
  content: "";
  width: 0.42em;
  height: 0.42em;
  margin-left: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}

.module-nav a:hover,
.module-nav a:focus-visible,
.nav-group summary:hover,
.nav-group summary:focus-visible {
  background: #e8f5f9;
  outline: none;
}

.nav-group {
  position: relative;
}

.nav-group__panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 20;
  display: grid;
  min-width: 220px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.nav-group__panel a {
  justify-content: flex-start;
  width: 100%;
  white-space: nowrap;
}

.module-nav .contact-link {
  padding-inline: 14px;
  color: var(--white);
  background: var(--blue-dark);
  box-shadow: 0 8px 18px rgba(13, 79, 120, 0.18);
  white-space: nowrap;
}

.module-nav .contact-link:hover,
.module-nav .contact-link:focus-visible {
  color: var(--white);
  background: var(--brand-mid);
}


.hero {
  min-height: auto;
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
  padding: clamp(28px, 4vw, 48px) clamp(18px, 5vw, 72px) clamp(22px, 3vw, 34px);
  background:
    linear-gradient(90deg, rgba(247, 251, 253, 0.98) 0%, rgba(247, 251, 253, 0.9) 44%, rgba(247, 251, 253, 0.5) 100%),
    url("assets/image1.png") center / cover no-repeat;
}

.hero-copy {
  max-width: 760px;
  position: sticky;
  top: 96px;
  padding-top: 12px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand-mid);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 640px;
  font-size: 3.9rem;
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  max-width: 780px;
  font-size: 2.8rem;
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.28rem;
  line-height: 1.18;
  letter-spacing: 0;
}

.hero-text {
  max-width: 580px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.13rem;
}

.missionlab-promo {
  width: min(100%, 620px);
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 24px;
  overflow: hidden;
  border: 1px solid rgba(217, 229, 236, 0.92);
  border-left: 5px solid var(--green);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 32px rgba(22, 53, 73, 0.1);
}

.missionlab-promo__media {
  aspect-ratio: 16 / 9;
  background: #ffffff;
}

.missionlab-promo video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #ffffff;
}

.missionlab-promo__content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  padding: 16px;
}

.missionlab-promo__intro {
  display: grid;
  gap: 7px;
  padding: 16px 16px 0;
}

.missionlab-promo__eyebrow,
.missionlab-promo__title,
.missionlab-promo__lead,
.missionlab-promo__content p {
  margin: 0;
}

.missionlab-promo__eyebrow {
  color: var(--brand-mid);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.missionlab-promo__title {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1.18;
}

.missionlab-promo__lead {
  color: var(--ink);
  font-size: 1.1rem;
  font-weight: 900;
  line-height: 1.2;
}

.missionlab-promo__content p:last-child {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 750;
}

.missionlab-promo__link {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  margin-top: 4px;
  padding: 10px 14px;
  border: 1px solid var(--blue-dark);
  border-radius: 8px;
  color: var(--white);
  background: var(--blue-dark);
  font-weight: 850;
  text-decoration: none;
}

.missionlab-promo__link:hover,
.missionlab-promo__link:focus-visible {
  border-color: var(--brand-mid);
  background: var(--brand-mid);
  outline: none;
}

.qgis-note {
  max-width: 620px;
  display: grid;
  gap: 10px;
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid color-mix(in srgb, var(--brand-mid) 26%, var(--line));
  border-left: 5px solid var(--brand-mid);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 28px rgba(22, 53, 73, 0.08);
}

.qgis-note p {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.qgis-note a {
  width: fit-content;
  color: var(--blue-dark);
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.qgis-note a:hover,
.qgis-note a:focus-visible {
  color: var(--brand-mid);
  outline: none;
}

.hero-modules {
  min-width: 0;
}

.section-heading.hero-modules-heading {
  margin-bottom: 14px;
}

.hero-modules h2 {
  max-width: none;
  font-size: 1.55rem;
}

.hero-modules .module-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-modules .module-card {
  min-height: auto;
  gap: 9px;
  padding: 16px 16px 16px 18px;
  background: rgba(255, 255, 255, 0.9);
}

.hero-modules .module-card h3 {
  font-size: 1.05rem;
}

.hero-modules .module-summary,
.hero-modules .module-card ol {
  font-size: 0.9rem;
}

.hero-modules .module-card ol {
  gap: 4px;
}

.hero-modules .assignment {
  padding-top: 8px;
  font-size: 0.92rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: var(--white);
  background: var(--blue-dark);
}

.hero-panel {
  justify-self: end;
  align-self: start;
  width: min(100%, 300px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 14px 16px;
  border: 1px solid rgba(217, 229, 236, 0.85);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.hero-panel div {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.hero-panel div:last-child {
  border-bottom: 0;
}

.metric {
  color: var(--blue-dark);
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1;
}

.metric-label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
  text-align: right;
}

.section {
  padding: clamp(32px, 4vw, 54px) clamp(18px, 5vw, 72px);
}

.modules-section {
  padding-top: clamp(24px, 3vw, 38px);
  background: var(--white);
}

.tools-section {
  background: #ffffff;
}

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

.utility-card {
  position: relative;
  display: grid;
  gap: 10px;
  min-height: 210px;
  padding: 22px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--accent-soft) 0%, #ffffff 58%);
  color: inherit;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(22, 53, 73, 0.06);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.utility-card:hover,
.utility-card:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 18px 38px rgba(22, 53, 73, 0.13);
  outline: none;
  transform: translateY(-2px);
}

.utility-card__label {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.utility-card h3 {
  color: var(--ink);
  font-size: 1.35rem;
}

.utility-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 750;
}

.utility-card__link {
  align-self: end;
  color: var(--accent);
  font-weight: 900;
}

.section-heading {
  display: grid;
  gap: 4px;
  margin-bottom: 22px;
}

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

.module-card {
  position: relative;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--accent-soft) 0%, #fbfdfe 48%);
  box-shadow: 0 12px 28px rgba(22, 53, 73, 0.06);
  color: inherit;
  overflow: hidden;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.module-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--accent);
}

.module-card:hover,
.module-card:focus-within {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 18px 38px rgba(22, 53, 73, 0.13);
  outline: none;
  transform: translateY(-2px);
}

.module-card.wide {
  grid-column: span 3;
  min-height: 260px;
}

.accent-cyan {
  --accent: var(--cyan);
  --accent-soft: #e8f8fd;
}

.accent-aqua {
  --accent: var(--aqua);
  --accent-soft: #e9fbf8;
}

.accent-green {
  --accent: var(--green);
  --accent-soft: #eaf9f6;
}

.accent-deep {
  --accent: var(--brand-mid);
  --accent-soft: #eef7fb;
}

.module-kicker {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.module-access {
  width: fit-content;
  margin: -4px 0 0;
  padding: 6px 9px;
  border: 1px solid color-mix(in srgb, var(--accent) 42%, var(--line));
  border-radius: 8px;
  color: var(--blue-dark);
  background: #ffffff;
  font-size: 0.78rem;
  font-weight: 900;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.module-summary {
  margin: -4px 0 2px;
  color: var(--ink);
  font-weight: 750;
}

.module-card ol {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.module-card li::marker {
  color: var(--accent);
  font-weight: 900;
}

.lesson-link {
  display: block;
  width: fit-content;
  max-width: 100%;
  border-radius: 6px;
  color: inherit;
  font-weight: 750;
  text-decoration: none;
  text-underline-offset: 3px;
}

.lesson-link:hover,
.lesson-link:focus-visible {
  color: var(--blue-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  outline: none;
}

.assignment {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-weight: 900;
}

.assignment a {
  width: fit-content;
  max-width: 100%;
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
  text-underline-offset: 3px;
}

.assignment a:hover,
.assignment a:focus-visible {
  color: var(--blue-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  outline: none;
}

.card-link {
  width: fit-content;
  color: var(--accent);
  font-weight: 900;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.card-link:hover,
.card-link:focus-visible {
  color: var(--blue-dark);
  outline: none;
}

.site-footer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 5vw, 72px);
  background: #ffffff;
  border-top: 1px solid var(--line);
}

.site-footer img {
  width: min(190px, 44vw);
  height: auto;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
  text-align: right;
}

.sub-header {
  position: static;
}

body:has(> main.lesson-page) .site-header.sub-header {
  position: sticky;
  top: 0;
  z-index: 30;
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px clamp(18px, 5vw, 44px) 58px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 750;
}

.breadcrumb a {
  color: var(--blue-dark);
  text-decoration: none;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--brand-mid);
  outline: none;
}

.subpage-hero {
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(135deg, var(--accent-soft) 0%, rgba(255, 255, 255, 0.92) 62%),
    url("assets/image1.png") right center / cover no-repeat;
  box-shadow: 0 14px 34px rgba(22, 53, 73, 0.08);
}

.subpage-hero h1 {
  max-width: 760px;
  font-size: 3.2rem;
  line-height: 1.05;
}

.subpage-hero p:last-child {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.06rem;
}

.page-section {
  margin-top: 28px;
}

.page-section h2 {
  margin-bottom: 16px;
  font-size: 2rem;
}

.about-content {
  max-width: 900px;
}

.about-copy {
  display: grid;
  gap: 16px;
}

.about-copy p {
  margin: 0;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 650;
}

.about-copy__lead {
  color: var(--blue-dark);
  font-size: 1.16rem;
  font-weight: 850;
}

.about-copy--missionlab {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.about-copy--missionlab h2 {
  margin-bottom: 0;
  color: var(--blue-dark);
}

.lesson-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.lesson-card,
.assignment-card,
.resource-link {
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
}

.lesson-card {
  display: grid;
  gap: 10px;
  min-height: 190px;
  padding: 20px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.06);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.lesson-card:hover,
.lesson-card:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 16px 32px rgba(22, 53, 73, 0.12);
  outline: none;
  transform: translateY(-2px);
}

.lesson-number {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lesson-card h3 {
  color: var(--ink);
}

.lesson-card p {
  margin: 0;
  color: var(--muted);
}

.assignment-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 16px;
  padding: 20px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  background: var(--accent-soft);
  font-weight: 900;
}

.assignment-card::after,
.resource-link::after {
  content: ">";
  color: var(--accent);
  font-weight: 900;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr);
  gap: 18px;
  margin-top: 28px;
}

.glossary-search {
  display: grid;
  gap: 8px;
  max-width: 680px;
}

.glossary-search__label {
  color: var(--blue-dark);
  font-weight: 900;
}

.glossary-search__control {
  position: relative;
}

.glossary-search__input {
  width: 100%;
  min-height: 52px;
  padding: 14px 50px 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.05);
  font: inherit;
  font-weight: 750;
}

.glossary-search__input::placeholder {
  color: color-mix(in srgb, var(--muted) 72%, #ffffff);
}

.glossary-search__input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
  outline: none;
}

.glossary-search__clear {
  position: absolute;
  top: 50%;
  right: 8px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  color: var(--blue-dark);
  background: #e8f5f9;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 900;
  cursor: pointer;
}

.glossary-search__clear:hover,
.glossary-search__clear:focus-visible {
  color: var(--white);
  background: var(--blue-dark);
  outline: none;
}

.glossary-search__count {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 800;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.unit-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.unit-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.05);
}

.unit-card h3 {
  margin-bottom: 8px;
  color: var(--blue-dark);
}

.unit-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.glossary-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.05);
}

.glossary-card h3 {
  margin-bottom: 8px;
  color: var(--blue-dark);
}

.glossary-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.glossary-empty {
  margin: 18px 0 0;
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #ffffff;
  font-weight: 800;
}

.glossary-card[hidden],
.glossary-empty[hidden],
.glossary-search__clear[hidden] {
  display: none;
}

.source-placeholder {
  display: grid;
  gap: 14px;
}

.source-placeholder__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
}

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

.source-disclaimer {
  margin: 0 0 18px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--blue-dark);
  border-radius: 8px;
  color: var(--muted);
  background: #ffffff;
  font-size: 0.95rem;
  font-weight: 750;
}

.source-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 230px;
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--brand-mid);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.05);
}

.source-card__type {
  margin: 0;
  color: var(--brand-mid);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.source-card h3 {
  margin: 0;
  color: var(--ink);
}

.source-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.source-card a {
  width: fit-content;
  margin-top: auto;
  color: var(--blue-dark);
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.source-card a:hover,
.source-card a:focus-visible {
  color: var(--brand-mid);
  outline: none;
}

.detail-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(22, 53, 73, 0.05);
}

.detail-card + .detail-card {
  margin-top: 14px;
}

.detail-card h2,
.detail-card h3 {
  margin-top: 0;
}

.detail-card h2 {
  margin-bottom: 12px;
  font-size: 1.55rem;
}

.detail-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.detail-card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.detail-card ul,
.detail-card ol {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding-left: 20px;
  color: var(--muted);
}

.detail-card li::marker {
  color: var(--accent);
  font-weight: 900;
}

.lesson-page {
  max-width: 1040px;
}

.lesson-page.has-lesson-resources {
  max-width: 1180px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 18px;
  align-items: start;
}

.lesson-page.has-lesson-resources .breadcrumb,
.lesson-page.has-lesson-resources .subpage-hero,
.lesson-page.has-lesson-resources .lesson-nav {
  grid-column: 1 / -1;
}

.lesson-page.has-lesson-resources .lesson-document {
  grid-column: 1;
}

.lesson-page.has-lesson-resources .lesson-resources {
  grid-column: 2;
  grid-row: 3;
  align-self: start;
  position: sticky;
  top: 18px;
}

body:has(> main.lesson-page) .lesson-page.has-lesson-resources .lesson-resources {
  top: 86px;
}

.lesson-document {
  margin-top: 28px;
  padding: clamp(22px, 4vw, 42px);
}

.lesson-document h2 {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.lesson-document h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.lesson-document h3 {
  margin-top: 22px;
  color: var(--blue-dark);
}

.lesson-document p,
.lesson-document li,
.lesson-document td,
.lesson-document th {
  color: var(--ink);
  font-size: 1.02rem;
}

.lesson-document p {
  margin-bottom: 12px;
}

.lesson-document .lesson-list-plain {
  gap: 7px;
  margin-bottom: 16px;
}

.detail-card .lesson-sublist {
  gap: 6px;
  margin: 8px 0 0;
  padding-left: 20px;
  list-style: none;
}

.detail-card .lesson-sublist li {
  position: relative;
}

.detail-card .lesson-sublist li::before {
  content: "-";
  position: absolute;
  left: -16px;
  color: var(--accent);
  font-weight: 900;
}

.lesson-extra-info {
  margin: 24px 0;
  padding: 20px;
  border: 1px solid color-mix(in srgb, var(--green) 42%, var(--line));
  border-left: 5px solid var(--green);
  border-radius: 8px;
  background: #eaf9f6;
}

.lesson-extra-info h3 {
  margin-top: 0;
  color: var(--brand-mid);
}

.lesson-extra-info > :last-child {
  margin-bottom: 0;
}

.lesson-video {
  display: grid;
  gap: 12px;
  margin: 26px 0 30px;
  padding: 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, var(--line));
  border-radius: 8px;
  background: var(--paper);
}

.lesson-video h2 {
  margin: 0;
  padding-top: 0;
  border-top: 0;
  font-size: 1.35rem;
}

.lesson-video__media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #000000;
}

.lesson-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000000;
}

.lesson-term {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  color: var(--blue-dark);
  font-weight: inherit;
  cursor: help;
  text-decoration: underline dotted currentColor;
  text-underline-offset: 3px;
}

.lesson-term:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, white);
  outline-offset: 3px;
  border-radius: 4px;
}

.lesson-term__popup {
  position: absolute;
  z-index: 30;
  top: calc(100% + 10px);
  left: 0;
  width: min(390px, 82vw);
  padding: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, var(--line));
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 18px 45px rgba(17, 24, 39, 0.18);
  color: var(--ink);
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  visibility: hidden;
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.lesson-term__popup.is-positioned {
  position: fixed;
  top: var(--lesson-term-popup-top, 0);
  left: var(--lesson-term-popup-left, 0);
}

.lesson-term--wide .lesson-term__popup {
  width: min(1220px, calc(100vw - 32px));
}

.lesson-term--medium .lesson-term__popup {
  width: min(680px, calc(100vw - 32px));
}

.lesson-term--large .lesson-term__popup {
  width: min(900px, calc(100vw - 32px));
}

.lesson-term--xlarge .lesson-term__popup {
  width: min(1080px, calc(100vw - 32px));
}

.lesson-term--icon .lesson-term__popup {
  width: auto;
}

.lesson-term--pdok-button .lesson-term__popup {
  width: auto;
}

.lesson-term--locator .lesson-term__popup {
  width: auto;
}

.lesson-term--text .lesson-term__popup {
  width: min(430px, calc(100vw - 32px));
  padding: 16px;
}

.lesson-term__popup-title,
.lesson-term__popup-copy {
  display: block;
  text-decoration: none;
}

.lesson-term__popup-title {
  margin-bottom: 8px;
  color: var(--blue-dark);
  font-weight: 900;
}

.lesson-term__popup-copy + .lesson-term__popup-copy {
  margin-top: 10px;
}

.lesson-term__popup-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--blue-dark);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.lesson-term__popup img {
  display: block;
  width: 100%;
  max-height: 420px;
  height: auto;
  object-fit: contain;
}

.lesson-term--icon .lesson-term__popup img {
  width: 84px;
  max-width: calc(100vw - 52px);
}

.lesson-term--pdok-button .lesson-term__popup img {
  width: 260px;
  max-width: calc(100vw - 52px);
}

.lesson-term--locator .lesson-term__popup img {
  width: 425px;
  max-width: calc(100vw - 52px);
}

.lesson-term--screen .lesson-term__popup img {
  width: auto;
  max-width: 100%;
  max-height: min(680px, calc(100vh - 72px));
}

.lesson-term:hover .lesson-term__popup,
.lesson-term:focus .lesson-term__popup,
.lesson-term:focus-within .lesson-term__popup,
.lesson-term.is-open .lesson-term__popup {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
}

.lesson-figure {
  margin: 22px 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.lesson-figure img {
  display: block;
  width: min(100%, 760px);
  max-height: 860px;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  cursor: zoom-in;
}

.lesson-figure img:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, white);
  outline-offset: 5px;
  border-radius: 4px;
}

.lesson-figure--compact img {
  width: min(100%, 360px);
}

.lesson-table-wrap {
  width: 100%;
  margin: 18px 0;
  overflow-x: auto;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: 8px;
  background: var(--paper);
}

.lesson-table {
  width: 100%;
  border-collapse: collapse;
}

.lesson-table th,
.lesson-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.lesson-table tr:last-child th,
.lesson-table tr:last-child td {
  border-bottom: 0;
}

.lesson-table th {
  color: var(--blue-dark);
  background: rgba(255, 255, 255, 0.72);
  font-weight: 900;
}

.lesson-resources {
  margin-top: 28px;
}

.protected-content {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.locked-lesson {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-top: 28px;
  border-left: 5px solid var(--accent);
}

.locked-lesson__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  color: var(--white);
  background: var(--blue-dark);
  font-size: 1.35rem;
  line-height: 1;
}

.locked-lesson h2 {
  margin-bottom: 10px;
}

.locked-lesson .button {
  margin-top: 4px;
}

.resource-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  max-width: 100%;
  min-width: 0;
}

.resource-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.resource-link::after {
  flex: 0 0 auto;
}

body.modal-open {
  overflow: hidden;
}

.contact-modal[hidden] {
  display: none;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 20px;
}

.contact-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 48, 68, 0.48);
  backdrop-filter: blur(4px);
}

.contact-modal__panel {
  position: relative;
  width: min(460px, 100%);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.contact-modal__panel:focus {
  outline: none;
}

.contact-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--blue-dark);
  background: var(--paper);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.contact-modal .contact-modal__eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.contact-modal h2 {
  margin: 0 34px 10px 0;
  font-size: 1.55rem;
}

.contact-modal p {
  color: var(--muted);
}

.contact-modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.contact-modal__contact,
.contact-modal__secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 8px;
  font: inherit;
  font-weight: 850;
  text-decoration: none;
  cursor: pointer;
}

.contact-modal__contact {
  border: 1px solid var(--blue-dark);
  color: #ffffff;
  background: var(--blue-dark);
}

.contact-modal__secondary {
  border: 1px solid var(--line);
  color: var(--blue-dark);
  background: #ffffff;
}

.image-modal[hidden] {
  display: none;
}

.image-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
}

.image-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 48, 68, 0.64);
  backdrop-filter: blur(4px);
}

.image-modal__panel {
  position: relative;
  width: min(1120px, 100%);
  max-height: calc(100vh - 40px);
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.image-modal__panel:focus {
  outline: none;
}

.image-modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1;
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--blue-dark);
  background: #ffffff;
  box-shadow: 0 8px 18px rgba(22, 53, 73, 0.14);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.image-modal__image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: calc(100vh - 128px);
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}

.image-modal__caption {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-align: center;
}

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
}

.lesson-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--blue-dark);
  font-weight: 850;
  text-decoration: none;
}

.lesson-nav a:last-child {
  color: #ffffff;
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    position: static;
    padding-top: 0;
  }

  .hero-modules .module-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-panel div {
    min-height: 78px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    padding: 0 16px 0 0;
  }

  .hero-panel div:last-child {
    border-right: 0;
  }

  .metric-label {
    text-align: left;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .module-card.wide {
    grid-column: span 1;
  }

  .lesson-list,
  .utility-grid,
  .unit-grid,
  .glossary-grid,
  .source-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .lesson-page.has-lesson-resources {
    grid-template-columns: 1fr;
  }

  .lesson-page.has-lesson-resources .lesson-document,
  .lesson-page.has-lesson-resources .lesson-resources {
    grid-column: 1;
  }

  .lesson-page.has-lesson-resources .lesson-resources {
    grid-row: auto;
    position: static;
  }
}

@media (max-width: 700px) {
  .site-header {
    position: static;
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .brand {
    width: min(210px, calc(100% - 82px));
  }

  .nav-toggle {
    display: inline-grid;
    grid-template-columns: 20px auto;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    margin-left: auto;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--blue-dark);
    background: #ffffff;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
  }

  .nav-toggle__bar {
    grid-column: 1;
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 99px;
    background: currentColor;
  }

  .nav-toggle__label {
    grid-column: 2;
    grid-row: 1 / span 3;
  }

  .module-nav {
    width: 100%;
    display: none;
    grid-template-columns: 1fr;
    padding-top: 6px;
  }

  .site-header.nav-open .module-nav {
    display: grid;
  }

  .module-nav a,
  .nav-group summary {
    justify-content: flex-start;
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.72);
  }

  .module-nav .contact-link {
    justify-content: center;
  }

  .nav-group__panel {
    position: static;
    min-width: 0;
    margin: 4px 0 8px;
    padding: 6px;
    box-shadow: none;
  }

  .nav-group__panel a {
    padding-left: 18px;
  }

  .hero {
    padding-top: 34px;
  }

  h1 {
    font-size: 2.65rem;
  }

  h2 {
    font-size: 2.1rem;
  }

  .hero-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    padding: 14px;
  }

  .hero-panel div {
    min-height: 86px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    padding: 0 8px 0 0;
  }

  .hero-panel div:last-child {
    border-right: 0;
  }

  .metric {
    font-size: 2.15rem;
  }

  .metric-label {
    font-size: 0.78rem;
  }

  .module-card,
  .module-card.wide {
    min-height: auto;
  }

  .subpage-hero h1 {
    font-size: 2.35rem;
  }

  .lesson-nav {
    flex-direction: column;
  }

  .locked-lesson {
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer p {
    text-align: left;
  }
}

@media print {
  .protected-content {
    display: none;
  }
}