:root {
  --ink: #0c1511;
  --ink-soft: #26352e;
  --forest: #0b1410;
  --forest-2: #111f18;
  --forest-3: #182c22;
  --paper: #f3f1e8;
  --paper-2: #e9e6da;
  --white: #fffdf6;
  --muted: #78827c;
  --line-dark: rgba(255, 255, 255, 0.13);
  --line-light: rgba(12, 21, 17, 0.15);
  --lime: #c7ff28;
  --lime-bright: #d8ff64;
  --gold: #f5bd39;
  --blue: #67b7ff;
  --coral: #ff654a;
  --purple: #b899ff;
  --javascript: #f7df1e;
  --statistics: #6ee7b7;
  --shadow: 7px 7px 0 rgba(6, 12, 9, 0.72);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--white);
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--forest);
  background-size: 48px 48px;
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(circle at 11% 19%, rgba(199, 255, 40, 0.11), transparent 29%),
    radial-gradient(circle at 89% 8%, rgba(103, 183, 255, 0.08), transparent 26%);
  content: "";
  pointer-events: none;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

button {
  color: inherit;
}

.skipLink {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--forest);
  background: var(--lime);
  font-weight: 800;
  transform: translateY(-150%);
}

.skipLink:focus {
  transform: translateY(0);
}

.shell {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.ambient {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}

.ambientOne {
  top: 270px;
  right: 3vw;
  width: 8px;
  height: 8px;
  background: var(--lime);
  box-shadow: 0 0 90px 48px rgba(199, 255, 40, 0.12);
}

.ambientTwo {
  top: 760px;
  left: 5vw;
  width: 6px;
  height: 6px;
  background: var(--blue);
  box-shadow: 0 0 100px 50px rgba(103, 183, 255, 0.1);
}

.siteHeader {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid var(--line-dark);
  background: rgba(11, 20, 16, 0.88);
  backdrop-filter: blur(18px);
}

.headerInner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 76px;
  gap: 42px;
}

.brand {
  display: inline-flex;
  align-items: center;
  width: max-content;
  gap: 11px;
}

.brandMark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(199, 255, 40, 0.72);
  color: var(--forest);
  background: var(--lime);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 3px 3px 0 rgba(199, 255, 40, 0.22);
}

.brand > span:last-child {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand strong {
  font-family: "Anta", sans-serif;
  font-size: 17px;
  letter-spacing: 0.025em;
}

.brand small {
  margin-top: 5px;
  color: var(--lime);
  font-family: "JetBrains Mono", monospace;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.3em;
}

.mainNav {
  display: flex;
  justify-content: center;
  gap: 32px;
}

.mainNav a,
.headerCta {
  font-size: 13px;
  font-weight: 700;
}

.mainNav a {
  position: relative;
  color: rgba(255, 253, 246, 0.68);
  transition: color 160ms ease;
}

.mainNav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  background: var(--lime);
  content: "";
  transform: scaleX(0);
  transition: transform 160ms ease;
}

.mainNav a:hover,
.mainNav a:focus-visible {
  color: var(--white);
}

.mainNav a:hover::after,
.mainNav a:focus-visible::after {
  transform: scaleX(1);
}

.headerCta {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 17px;
  border: 1px solid var(--lime);
  gap: 18px;
  transition: color 160ms ease, background 160ms ease;
}

.headerCta:hover,
.headerCta:focus-visible {
  color: var(--forest);
  background: var(--lime);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(470px, 0.97fr);
  align-items: center;
  min-height: 690px;
  padding-block: 84px 90px;
  gap: 72px;
}

.eyebrow,
.sectionKicker {
  margin: 0;
  color: var(--lime);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  background: var(--lime);
  box-shadow: 0 0 16px rgba(199, 255, 40, 0.75);
}

.hero h1 {
  max-width: 730px;
  margin: 23px 0 24px;
  font-family: "Anta", sans-serif;
  font-size: clamp(52px, 7vw, 98px);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.055em;
}

.hero h1 em {
  display: block;
  color: var(--lime);
  font-style: normal;
}

.heroLead {
  max-width: 600px;
  margin: 0;
  color: rgba(255, 253, 246, 0.65);
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.65;
}

.heroActions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 34px;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border: 1px solid transparent;
  gap: 24px;
  font-size: 13px;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.buttonPrimary {
  color: var(--forest);
  background: var(--lime);
  box-shadow: 5px 5px 0 rgba(199, 255, 40, 0.21);
}

.buttonPrimary:hover,
.buttonPrimary:focus-visible {
  box-shadow: 2px 2px 0 rgba(199, 255, 40, 0.21);
  transform: translate(3px, 3px);
}

.buttonGhost {
  border-color: var(--line-dark);
  background: rgba(255, 255, 255, 0.025);
}

.buttonGhost:hover,
.buttonGhost:focus-visible {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.heroStats {
  display: flex;
  margin: 50px 0 0;
  gap: 0;
}

.heroStats div {
  min-width: 120px;
  padding-right: 32px;
}

.heroStats div + div {
  padding-left: 32px;
  border-left: 1px solid var(--line-dark);
}

.heroStats dt {
  color: var(--white);
  font-family: "JetBrains Mono", monospace;
  font-size: 24px;
  font-weight: 700;
}

.heroStats dd {
  margin: 4px 0 0;
  color: rgba(255, 253, 246, 0.45);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.heroBoard {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 13px 13px 0 rgba(199, 255, 40, 0.85);
  transform: rotate(1.3deg);
}

.heroBoard::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 20, 16, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 20, 16, 0.045) 1px, transparent 1px);
  background-size: 18px 18px;
  content: "";
  pointer-events: none;
}

.boardHeader,
.boardFooter,
.boardTitle,
.pathStack {
  position: relative;
}

.boardHeader,
.boardFooter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.11em;
}

.boardHeader {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--ink);
}

.boardStatus {
  display: flex;
  align-items: center;
  gap: 7px;
}

.boardStatus i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #60c05f;
  box-shadow: 0 0 0 3px rgba(96, 192, 95, 0.15);
}

.boardTitle {
  padding: 27px 0 21px;
}

.boardTitle p {
  margin: 0 0 7px;
  color: #69726d;
  font-size: 13px;
}

.boardTitle strong {
  font-family: "Anta", sans-serif;
  font-size: clamp(23px, 3vw, 33px);
  font-weight: 400;
}

.pathStack {
  display: grid;
  gap: 10px;
}

.pathRow {
  display: grid;
  grid-template-columns: 32px 48px 1fr 20px;
  align-items: center;
  width: 100%;
  min-height: 85px;
  padding: 11px 15px;
  border: 1px solid rgba(12, 21, 17, 0.2);
  color: var(--ink);
  background: rgba(255, 253, 246, 0.78);
  text-align: left;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.pathRow:hover,
.pathRow:focus-visible {
  z-index: 1;
  box-shadow: 4px 4px 0 var(--ink);
  transform: translate(-2px, -2px);
}

.pathIndex {
  align-self: start;
  color: #89918d;
  font-family: "JetBrains Mono", monospace;
  font-size: 8px;
  font-weight: 700;
}

.pathCode {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 800;
}

.pathR .pathCode { background: var(--gold); }
.pathPython .pathCode { background: var(--blue); }
.pathHtml .pathCode { background: var(--coral); }
.pathCss .pathCode { background: var(--purple); }
.pathJavascript .pathCode { background: var(--javascript); }
.pathStatistics .pathCode { background: var(--statistics); }

.pathName {
  display: flex;
  flex-direction: column;
  padding-left: 9px;
}

.pathName strong {
  font-size: 14px;
}

.pathName small {
  margin-top: 4px;
  color: #737c77;
  font-size: 11px;
}

.pathArrow {
  font-size: 20px;
}

.boardFooter {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--ink);
  color: #757e78;
}

.resumeSection {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: center;
  min-height: 112px;
  margin-bottom: 100px;
  padding: 20px 24px;
  color: var(--forest);
  background: var(--lime);
  box-shadow: 8px 8px 0 rgba(199, 255, 40, 0.15);
  gap: 20px;
}

.resumeSection[hidden] {
  display: none;
}

.resumeIcon {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid rgba(11, 20, 16, 0.45);
  font-family: "JetBrains Mono", monospace;
  font-size: 27px;
}

.resumeCopy span {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.resumeCopy h2 {
  margin: 4px 0 0;
  font-family: "Anta", sans-serif;
  font-size: 23px;
  font-weight: 400;
}

.resumeCopy p {
  margin: 3px 0 0;
  color: rgba(11, 20, 16, 0.68);
  font-size: 12px;
}

.buttonLight {
  border-color: var(--forest);
  color: var(--white);
  background: var(--forest);
}

.buttonLight:hover,
.buttonLight:focus-visible {
  color: var(--forest);
  background: transparent;
}

.tracksSection {
  padding-bottom: 120px;
}

.sectionHeading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.65fr);
  align-items: end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 70px;
}

.sectionHeading h2,
.sourceSection h2 {
  margin: 10px 0 0;
  font-family: "Anta", sans-serif;
  font-size: clamp(35px, 4.5vw, 57px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.035em;
}

.sectionHeading > p {
  margin: 0;
  color: rgba(255, 253, 246, 0.55);
  font-size: 14px;
  line-height: 1.7;
}

.trackGrid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.trackCard {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 390px;
  padding: 22px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  color: var(--white);
  background: rgba(255, 255, 255, 0.025);
  text-align: left;
  cursor: pointer;
  transition: border-color 170ms ease, transform 170ms ease, background 170ms ease;
  grid-column: span 2;
}

.trackCard::after {
  position: absolute;
  top: 69px;
  right: -80px;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  content: "";
  transition: transform 300ms ease;
}

.trackCard:hover,
.trackCard:focus-visible {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.055);
  transform: translateY(-5px);
}

.trackCard:hover::after,
.trackCard:focus-visible::after {
  transform: scale(1.15);
}

.trackTop,
.trackBottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.trackNumber,
.trackBadge,
.trackBottom {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.trackNumber {
  color: rgba(255, 253, 246, 0.4);
}

.trackBadge {
  padding: 6px 8px;
  border: 1px solid var(--line-dark);
}

.trackGlyph {
  position: relative;
  z-index: 1;
  display: grid;
  width: 82px;
  height: 82px;
  margin-top: 35px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.27);
  color: var(--forest);
  font-family: "JetBrains Mono", monospace;
  font-size: 24px;
  font-weight: 800;
}

.trackCardR .trackGlyph { background: var(--gold); }
.trackCardPython .trackGlyph { background: var(--blue); }
.trackCardHtml .trackGlyph { background: var(--coral); }
.trackCardCss .trackGlyph { background: var(--purple); }
.trackCardJavascript .trackGlyph { background: var(--javascript); }
.trackCardStatistics .trackGlyph { background: var(--statistics); }

.trackCard > strong {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  font-family: "Anta", sans-serif;
  font-size: 25px;
  font-weight: 400;
}

.trackDescription {
  position: relative;
  z-index: 1;
  margin-top: 9px;
  color: rgba(255, 253, 246, 0.54);
  font-size: 13px;
  line-height: 1.55;
}

.trackProgress {
  height: 3px;
  margin-top: auto;
  background: rgba(255, 255, 255, 0.1);
}

.trackProgress i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--lime);
  transition: width 300ms ease;
}

.trackBottom {
  margin-top: 13px;
  color: rgba(255, 253, 246, 0.57);
}

.trackBottom b {
  color: var(--lime);
  font-size: 17px;
}

.curriculumSection {
  padding: 110px 0 120px;
  color: var(--ink);
  background:
    linear-gradient(rgba(12, 21, 17, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12, 21, 17, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: 30px 30px;
}

.curriculumSection .sectionKicker {
  color: #457200;
}

.curriculumHeading {
  align-items: end;
}

.overallProgress {
  justify-self: end;
  width: min(100%, 310px);
}

.overallProgress > span:first-child {
  display: block;
  margin-bottom: 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  text-align: right;
  letter-spacing: 0.1em;
}

.overallProgress b {
  font-size: 15px;
}

.overallBar {
  display: block;
  height: 7px;
  padding: 2px;
  border: 1px solid var(--ink);
}

.overallBar i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--ink);
  transition: width 300ms ease;
}

.libraryToolbar {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  padding: 16px;
  border: 1px solid var(--ink);
  background: rgba(255, 253, 246, 0.68);
  gap: 14px;
}

.searchBox {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: center;
  min-height: 52px;
  padding: 0 14px;
  border: 1px solid rgba(12, 21, 17, 0.28);
  background: var(--white);
  gap: 10px;
}

.searchBox > span {
  font-family: "JetBrains Mono", monospace;
  font-size: 24px;
  transform: rotate(-15deg);
}

.searchBox input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 14px;
}

.searchBox input::placeholder {
  color: #818983;
}

.searchBox:focus-within {
  outline: 2px solid var(--ink);
  outline-offset: -2px;
}

.searchBox kbd {
  display: grid;
  min-width: 26px;
  height: 26px;
  place-items: center;
  border: 1px solid rgba(12, 21, 17, 0.25);
  color: #66706a;
  background: var(--paper-2);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  box-shadow: 0 2px 0 rgba(12, 21, 17, 0.16);
}

.filterGroup {
  display: flex;
  gap: 7px;
}

.filterButton {
  min-width: 70px;
  padding: 0 12px;
  border: 1px solid rgba(12, 21, 17, 0.25);
  color: var(--ink);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.filterButton span {
  margin-left: 4px;
  color: #7d857f;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
}

.filterButton:hover,
.filterButton:focus-visible,
.filterButton.isActive {
  color: var(--white);
  background: var(--ink);
}

.filterButton.isActive span,
.filterButton:hover span,
.filterButton:focus-visible span {
  color: var(--lime);
}

.libraryMeta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 17px 0;
  color: #727b75;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.libraryMeta p {
  margin: 0;
}

.courseGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 17px;
}

.courseCard {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 24px;
  border: 1px solid rgba(12, 21, 17, 0.28);
  background: rgba(255, 253, 246, 0.84);
  box-shadow: 5px 5px 0 rgba(12, 21, 17, 0.12);
  transition: transform 170ms ease, box-shadow 170ms ease, background 170ms ease;
}

.courseCard::before {
  position: absolute;
  top: -1px;
  right: -1px;
  left: -1px;
  height: 5px;
  background: var(--course-accent, var(--lime));
  content: "";
}

.courseCard:hover {
  z-index: 1;
  background: var(--white);
  box-shadow: 9px 9px 0 rgba(12, 21, 17, 0.18);
  transform: translate(-2px, -2px);
}

.courseCardR { --course-accent: var(--gold); }
.courseCardPython { --course-accent: var(--blue); }
.courseCardHtml { --course-accent: var(--coral); }
.courseCardCss { --course-accent: var(--purple); }
.courseCardJavascript { --course-accent: var(--javascript); }
.courseCardStatistics { --course-accent: var(--statistics); }

.courseCard.isComplete {
  background:
    linear-gradient(rgba(199, 255, 40, 0.13), rgba(199, 255, 40, 0.13)),
    var(--white);
}

.courseCardTop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.courseTrack,
.courseSequence,
.courseMeta,
.completeToggle,
.openLesson {
  font-family: "JetBrains Mono", monospace;
}

.courseTrack {
  padding: 6px 8px;
  border: 1px solid var(--ink);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.courseCardR .courseTrack { background: var(--gold); }
.courseCardPython .courseTrack { background: var(--blue); }
.courseCardHtml .courseTrack { background: var(--coral); }
.courseCardCss .courseTrack { background: var(--purple); }
.courseCardJavascript .courseTrack { background: var(--javascript); }
.courseCardStatistics .courseTrack { background: var(--statistics); }

.completeToggle {
  display: inline-flex;
  align-items: center;
  padding: 0;
  border: 0;
  color: #68716b;
  background: transparent;
  gap: 7px;
  font-size: 9px;
  font-weight: 700;
  cursor: pointer;
}

.completeToggle i {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border: 1px solid rgba(12, 21, 17, 0.45);
  color: transparent;
  background: transparent;
  font-style: normal;
}

.completeToggle:hover,
.completeToggle:focus-visible {
  color: var(--ink);
}

.isComplete .completeToggle i {
  color: var(--ink);
  background: var(--lime);
}

.courseSequence {
  margin: 30px 0 9px;
  color: #737c77;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.courseCard h3 {
  margin: 0;
  font-family: "Anta", sans-serif;
  font-size: 24px;
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.courseDescription {
  margin: 14px 0 0;
  color: #606a64;
  font-size: 13px;
  line-height: 1.58;
}

.courseTags {
  display: flex;
  flex-wrap: wrap;
  margin-top: 17px;
  gap: 6px;
}

.courseTags span {
  padding: 5px 7px;
  border: 1px solid rgba(12, 21, 17, 0.16);
  color: #657069;
  background: rgba(12, 21, 17, 0.025);
  font-size: 9px;
  font-weight: 700;
}

.courseCardFooter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 23px;
  border-top: 1px solid rgba(12, 21, 17, 0.14);
  gap: 18px;
}

.courseMeta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  color: #717b75;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.courseMeta strong {
  color: var(--ink);
  font-size: 9px;
}

.openLesson {
  display: inline-flex;
  align-items: center;
  min-height: 39px;
  padding: 0 12px;
  border: 1px solid var(--ink);
  color: var(--white);
  background: var(--ink);
  gap: 12px;
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
  transition: color 150ms ease, background 150ms ease;
}

.openLesson:hover,
.openLesson:focus-visible {
  color: var(--ink);
  background: var(--lime);
}

.emptyState {
  padding: 80px 20px;
  border: 1px dashed rgba(12, 21, 17, 0.35);
  text-align: center;
}

.emptyState[hidden] {
  display: none;
}

.emptyState > span {
  font-family: "JetBrains Mono", monospace;
  font-size: 43px;
}

.emptyState h3 {
  margin: 16px 0 7px;
  font-family: "Anta", sans-serif;
  font-size: 26px;
  font-weight: 400;
}

.emptyState p {
  margin: 0;
  color: #6c766f;
  font-size: 14px;
}

.emptyState button {
  margin-top: 22px;
  padding: 10px 14px;
  border: 1px solid var(--ink);
  color: var(--white);
  background: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

.sourceSection {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 0.65fr);
  align-items: center;
  padding-block: 105px;
  gap: 90px;
}

.sourceSection > div:first-child > p:last-child {
  max-width: 570px;
  margin: 20px 0 0;
  color: rgba(255, 253, 246, 0.55);
  font-size: 14px;
  line-height: 1.7;
}

.repoLinks {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.repoLinks a {
  display: grid;
  grid-template-columns: 43px 1fr auto;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid var(--line-dark);
  gap: 14px;
  font-size: 14px;
  font-weight: 700;
  transition: padding 160ms ease, background 160ms ease;
}

.repoLinks a:hover,
.repoLinks a:focus-visible {
  padding-inline: 10px;
  background: rgba(255, 255, 255, 0.04);
}

.repoLinks a span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line-dark);
  color: var(--lime);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
}

.repoLinks a b {
  color: var(--lime);
  font-size: 17px;
}

.siteFooter {
  border-top: 1px solid var(--line-dark);
}

.footerInner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 120px;
  gap: 20px;
}

.footerInner p {
  color: rgba(255, 253, 246, 0.42);
  font-size: 12px;
}

.footerInner > a:last-child {
  justify-self: end;
  color: var(--lime);
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footerBrand .brandMark {
  width: 34px;
  height: 34px;
}

.noscript {
  position: fixed;
  z-index: 99;
  right: 16px;
  bottom: 16px;
  left: 16px;
  padding: 14px;
  border: 1px solid var(--coral);
  color: var(--ink);
  background: var(--paper);
  text-align: center;
  font-weight: 700;
}

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

@media (max-width: 1050px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(400px, 0.9fr);
    gap: 40px;
  }

  .hero h1 {
    font-size: clamp(52px, 8vw, 78px);
  }

  .heroStats div {
    min-width: 0;
    padding-right: 20px;
  }

  .heroStats div + div {
    padding-left: 20px;
  }

  .courseGrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .filterButton {
    min-height: 42px;
  }
}

@media (max-width: 860px) {
  .shell {
    width: min(100% - 32px, 720px);
  }

  .headerInner {
    grid-template-columns: 1fr auto;
  }

  .mainNav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-block: 76px 92px;
  }

  .heroCopy {
    max-width: 700px;
  }

  .heroBoard {
    width: min(100% - 12px, 620px);
    margin-inline: auto;
  }

  .resumeSection {
    margin-bottom: 90px;
  }

  .sectionHeading,
  .sourceSection {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sectionHeading > p {
    max-width: 590px;
  }

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

  .trackCard {
    grid-column: auto;
  }

  .trackCard {
    min-height: 345px;
  }

  .sourceSection {
    gap: 44px;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 24px, 560px);
  }

  .headerInner {
    min-height: 66px;
  }

  .brandMark {
    width: 36px;
    height: 36px;
  }

  .brand strong {
    font-size: 15px;
  }

  .headerCta {
    min-height: 38px;
    padding-inline: 12px;
    gap: 8px;
    font-size: 11px;
  }

  .hero {
    min-height: 0;
    padding-block: 60px 76px;
  }

  .hero h1 {
    font-size: clamp(49px, 17vw, 72px);
  }

  .heroLead {
    font-size: 16px;
  }

  .heroActions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .heroStats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .heroStats div {
    min-width: 0;
    padding-right: 8px;
  }

  .heroStats div + div {
    padding-left: 12px;
  }

  .heroStats dt {
    font-size: 19px;
  }

  .heroStats dd {
    font-size: 8px;
  }

  .heroBoard {
    width: calc(100% - 8px);
    padding: 17px;
    box-shadow: 8px 8px 0 rgba(199, 255, 40, 0.85);
  }

  .boardTitle {
    padding-block: 23px 17px;
  }

  .boardTitle strong {
    font-size: 22px;
  }

  .pathRow {
    grid-template-columns: 22px 42px 1fr 16px;
    min-height: 77px;
    padding-inline: 9px;
  }

  .pathCode {
    width: 35px;
    height: 35px;
  }

  .pathName strong {
    font-size: 12px;
  }

  .pathName small {
    font-size: 9px;
  }

  .boardFooter {
    align-items: flex-start;
    gap: 20px;
    font-size: 7px;
  }

  .resumeSection {
    grid-template-columns: 44px 1fr;
    margin-bottom: 80px;
    padding: 17px;
    gap: 14px;
  }

  .resumeIcon {
    width: 42px;
    height: 42px;
  }

  .resumeCopy h2 {
    font-size: 19px;
  }

  .resumeSection .button {
    grid-column: 1 / -1;
  }

  .tracksSection {
    padding-bottom: 85px;
  }

  .sectionHeading h2,
  .sourceSection h2 {
    font-size: 38px;
  }

  .trackCard {
    min-height: 330px;
  }

  .curriculumSection {
    padding-block: 78px 85px;
  }

  .curriculumHeading {
    gap: 28px;
  }

  .overallProgress {
    justify-self: stretch;
    width: 100%;
  }

  .overallProgress > span:first-child {
    text-align: left;
  }

  .libraryToolbar {
    padding: 10px;
  }

  .searchBox kbd {
    display: none;
  }

  .filterGroup {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .filterButton {
    min-width: 0;
    padding-inline: 4px;
  }

  .filterButton span {
    display: none;
  }

  .libraryMeta p:last-child {
    display: none;
  }

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

  .courseCard {
    min-height: 340px;
  }

  .sourceSection {
    padding-block: 78px;
  }

  .footerInner {
    grid-template-columns: 1fr auto;
    padding-block: 24px;
  }

  .footerInner p {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}