:root {
  --navy-1000: #020b14;
  --navy-950: #03101e;
  --navy-900: #061526;
  --navy-850: #082039;
  --navy-800: #0a2947;
  --navy-700: #113b61;
  --ink: #f7fbff;
  --ink-soft: #afc3d6;
  --sky: #8bd8ff;
  --blue: #3978ff;
  --gold: #f4bf47;
  --paper: #fbfaf6;
  --paper-blue: #eaf6ff;
  --line: rgba(139, 216, 255, .18);
  --surface: rgba(6, 27, 46, .76);
  --surface-strong: #071c31;
  --danger: #ff8b9a;
  --success: #93e4c3;
  --content: 1510px;
  --gutter: clamp(20px, 4vw, 66px);
  --shadow: 0 30px 80px rgba(0, 8, 17, .28);
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "Segoe UI", "Noto Sans", "Noto Sans SC", "Noto Sans TC",
    Helvetica, Arial, sans-serif;
}

html[data-theme="day"] {
  --ink: #07172b;
  --ink-soft: #557087;
  --line: rgba(15, 78, 122, .16);
  --surface: rgba(244, 250, 255, .76);
  --surface-strong: #eef8ff;
  --shadow: 0 30px 80px rgba(38, 100, 143, .15);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--navy-950);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% -8%, rgba(38, 103, 219, .3), transparent 34%),
    radial-gradient(circle at 2% 82%, rgba(93, 203, 255, .11), transparent 29%),
    linear-gradient(145deg, #020c17 0%, #061b2d 48%, #061526 100%);
}

html[data-theme="day"] body {
  background:
    radial-gradient(circle at 84% 0%, rgba(116, 200, 255, .34), transparent 38%),
    radial-gradient(circle at 4% 80%, rgba(85, 151, 255, .11), transparent 32%),
    linear-gradient(145deg, #f4fbff 0%, #dcedf8 48%, #cce8fa 100%);
}

button,
input,
select {
  font: inherit;
}

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

button,
a {
  touch-action: manipulation;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--navy-950);
  background: var(--paper);
  border-radius: 999px;
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 16, 30, .91);
  box-shadow: 0 12px 42px rgba(0, 7, 15, .18);
  backdrop-filter: blur(22px) saturate(130%);
  -webkit-backdrop-filter: blur(22px) saturate(130%);
}

html[data-theme="day"] .site-header {
  background: rgba(235, 247, 255, .91);
  box-shadow: 0 12px 42px rgba(17, 69, 103, .11);
}

.site-header-inner {
  width: min(var(--content), calc(100% - (2 * var(--gutter))));
  min-height: 78px;
  display: grid;
  grid-template-columns: minmax(210px, 1fr) auto minmax(210px, 1fr);
  align-items: center;
  gap: 22px;
  margin: 0 auto;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 43px;
  height: 43px;
  position: relative;
  flex: 0 0 auto;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  object-fit: contain;
}

.brand-mark-day {
  display: none;
}

html[data-theme="day"] .brand-mark-night {
  display: none;
}

html[data-theme="day"] .brand-mark-day {
  display: block;
}

.brand-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  color: var(--ink);
  font-size: 20px;
  letter-spacing: -.035em;
}

.brand-copy small {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .17em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.primary-navigation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.4vw, 40px);
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: none;
}

.primary-navigation::-webkit-scrollbar {
  display: none;
}

.primary-navigation a {
  min-height: 43px;
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0 2px;
  color: rgba(229, 239, 248, .63);
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
}

html[data-theme="day"] .primary-navigation a {
  color: #5f7489;
}

.primary-navigation a::after {
  position: absolute;
  right: 50%;
  bottom: 3px;
  left: 50%;
  height: 2px;
  content: "";
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--sky), var(--gold));
  opacity: 0;
  transition: right .22s ease, left .22s ease, opacity .2s ease;
}

.primary-navigation a:hover,
.primary-navigation a.active {
  color: var(--ink);
}

.primary-navigation a:hover::after,
.primary-navigation a.active::after {
  right: 0;
  left: 0;
  opacity: 1;
}

.header-controls {
  min-width: 0;
  display: flex;
  justify-self: end;
  align-items: center;
  gap: 10px;
}

.theme-control {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .035);
}

.theme-control button {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 760;
}

.theme-control button[aria-pressed="true"] {
  color: var(--ink);
  background: rgba(139, 216, 255, .13);
}

html[data-theme="day"] .theme-control button[aria-pressed="true"] {
  background: #fff;
  box-shadow: 0 5px 14px rgba(35, 90, 130, .12);
}

.language-control {
  min-height: 40px;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .035);
}

.language-control select {
  max-width: 88px;
  padding: 0 16px 0 0;
  color: inherit;
  background: transparent;
  border: 0;
  font-size: 10px;
  font-weight: 750;
}

.language-control select option {
  color: #07172b;
}

.coursekeys-global-notice {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px max(var(--gutter), calc((100vw - var(--content)) / 2));
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-bottom: 1px solid var(--line);
}

.coursekeys-global-notice > span {
  width: 22px;
  height: 22px;
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  color: var(--navy-950);
  background: var(--sky);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 850;
}

.coursekeys-global-notice p {
  flex: 1;
  margin: 0;
  font-size: 11px;
  line-height: 1.45;
}

.coursekeys-global-notice button {
  min-height: 34px;
  padding: 0 8px;
  color: var(--sky);
  background: transparent;
  border: 0;
  font-size: 10px;
  font-weight: 800;
}

html[data-theme="day"] .coursekeys-global-notice button {
  color: #1c5bd1;
}

.coursekeys-main {
  width: min(var(--content), calc(100% - (2 * var(--gutter))));
  display: grid;
  gap: 22px;
  margin: 0 auto;
  padding: 30px 0 72px;
}

.eyebrow {
  margin: 0;
  color: var(--sky);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}

html[data-theme="day"] .eyebrow {
  color: #1460b9;
}

.coursekeys-hero {
  min-height: 445px;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr);
  align-items: stretch;
  gap: 28px;
  overflow: hidden;
  padding: clamp(32px, 4.5vw, 66px);
  color: #fff;
  background:
    radial-gradient(circle at 83% 12%, rgba(65, 187, 255, .22), transparent 29%),
    linear-gradient(135deg, #051321, #082b49 56%, #0b4a76);
  border: 1px solid rgba(139, 216, 255, .19);
  border-radius: 36px;
  box-shadow: var(--shadow);
  isolation: isolate;
}

.coursekeys-hero::before {
  width: 620px;
  height: 620px;
  position: absolute;
  right: -210px;
  bottom: -430px;
  content: "";
  border: 1px solid rgba(139, 216, 255, .2);
  border-radius: 50%;
  box-shadow:
    0 0 0 82px rgba(139, 216, 255, .027),
    0 0 0 164px rgba(139, 216, 255, .018);
}

.coursekeys-hero::after {
  width: 44%;
  height: 150%;
  position: absolute;
  top: -25%;
  right: 23%;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(139, 216, 255, .08), transparent);
  transform: rotate(28deg);
  animation: heroBeam 12s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroBeam {
  from { transform: translateX(-8%) rotate(28deg); }
  to { transform: translateX(9%) rotate(28deg); }
}

.hero-copy {
  z-index: 1;
  align-self: center;
}

.hero-copy h1 {
  max-width: 750px;
  margin: 12px 0 20px;
  color: #fff;
  font-size: clamp(48px, 5.6vw, 82px);
  font-weight: 780;
  letter-spacing: -.065em;
  line-height: .94;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 680px;
  margin: 0 0 30px;
  color: rgba(234, 246, 255, .77);
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 15px;
  font-size: 11px;
  font-weight: 820;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button-primary {
  color: var(--navy-950);
  background: linear-gradient(135deg, #d9f4ff, #fff0b8);
  box-shadow: 0 14px 28px rgba(0, 8, 18, .17);
}

.button-ghost {
  color: #fff;
  background: rgba(255, 255, 255, .055);
  border-color: rgba(255, 255, 255, .24);
}

.button:disabled {
  color: rgba(238, 246, 251, .5);
  background: rgba(255, 255, 255, .055);
  border-color: rgba(255, 255, 255, .13);
  box-shadow: none;
}

.coursekeys-wallet {
  z-index: 1;
  min-height: 320px;
  align-self: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  padding: 26px;
  background: linear-gradient(155deg, rgba(255, 255, 255, .14), rgba(255, 255, 255, .035));
  border: 1px solid rgba(213, 240, 255, .23);
  border-radius: 27px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .2);
  backdrop-filter: blur(18px);
}

.wallet-heading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.wallet-mark {
  width: 48px;
  height: 48px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  color: var(--navy-950);
  background: linear-gradient(135deg, #85dcff, #fff1a6);
  border-radius: 16px;
  font-size: 21px;
  font-weight: 900;
}

.wallet-heading > div {
  display: grid;
  gap: 4px;
}

.wallet-heading span:not(.wallet-mark) {
  color: rgba(231, 246, 255, .65);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.wallet-heading strong {
  color: #fff;
  font-size: 22px;
  letter-spacing: -.04em;
}

.wallet-balance-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.wallet-balance-grid > div {
  display: grid;
  gap: 5px;
  padding: 16px;
  background: rgba(2, 17, 30, .27);
  border: 1px solid rgba(215, 241, 255, .12);
  border-radius: 16px;
}

.wallet-balance-grid strong {
  color: #fff;
  font-size: 23px;
}

.wallet-balance-grid span {
  color: rgba(231, 246, 255, .65);
  font-size: 9px;
}

.coursekeys-wallet p {
  margin: 0;
  color: rgba(231, 246, 255, .67);
  font-size: 10px;
  line-height: 1.6;
}

.coursekeys-wallet > button {
  min-height: 43px;
  color: rgba(255, 255, 255, .58);
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 13px;
  font-size: 10px;
  font-weight: 800;
}

.readiness-strip {
  display: grid;
  grid-template-columns: minmax(250px, .7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 28px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.readiness-strip h2 {
  margin: 7px 0 0;
  color: var(--ink);
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: -.045em;
}

.readiness-strip ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.readiness-strip li {
  min-width: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 8px;
  padding: 14px;
  background: rgba(139, 216, 255, .06);
  border-radius: 16px;
}

html[data-theme="day"] .readiness-strip li {
  background: rgba(31, 100, 151, .055);
}

.readiness-strip li > span {
  grid-row: 1 / span 2;
  align-self: center;
  color: var(--success);
  font-weight: 900;
}

.readiness-strip li.locked > span {
  color: var(--danger);
}

.readiness-strip b {
  color: var(--ink);
  font-size: 11px;
}

.readiness-strip small {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inventory-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr);
  align-items: center;
  gap: 42px;
  padding: clamp(30px, 4vw, 56px);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface-strong) 88%, transparent), var(--surface));
  border: 1px solid var(--line);
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.inventory-overview h2,
.library-header h2 {
  margin: 9px 0 12px;
  color: var(--ink);
  font-size: clamp(30px, 3.8vw, 54px);
  letter-spacing: -.06em;
  line-height: 1;
}

.inventory-overview > div:first-child > p:last-child,
.library-header > div > p:last-child {
  max-width: 690px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.7;
}

.inventory-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.inventory-stat-grid > div {
  min-height: 116px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 7px;
  padding: 19px;
  background: rgba(139, 216, 255, .055);
  border: 1px solid var(--line);
  border-radius: 19px;
}

.inventory-stat-grid strong {
  color: var(--ink);
  font-size: clamp(25px, 3vw, 38px);
  letter-spacing: -.06em;
}

.inventory-stat-grid span {
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 760;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.coursekeys-library {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 36px;
  box-shadow: var(--shadow);
}

.library-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(30px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
}

.library-header .button:disabled {
  color: var(--ink-soft);
  background: rgba(139, 216, 255, .07);
  border-color: var(--line);
}

.library-tabs {
  display: flex;
  gap: 9px;
  padding: 14px clamp(20px, 4vw, 54px) 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.library-tabs button {
  min-height: 45px;
  position: relative;
  flex: 0 0 auto;
  padding: 0 16px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  font-size: 10px;
  font-weight: 800;
}

.library-tabs button::after {
  height: 2px;
  position: absolute;
  right: 50%;
  bottom: 0;
  left: 50%;
  content: "";
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--sky), var(--gold));
  transition: right .2s ease, left .2s ease;
}

.library-tabs button[aria-selected="true"] {
  color: var(--ink);
}

.library-tabs button[aria-selected="true"]::after {
  right: 10px;
  left: 10px;
}

.filter-panel {
  display: grid;
  grid-template-columns: minmax(260px, 1.6fr) repeat(2, minmax(190px, .7fr));
  gap: 10px;
  padding: 20px clamp(20px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
}

.filter-panel label {
  display: grid;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 760;
}

.filter-panel :is(input, select) {
  width: 100%;
  min-height: 50px;
  padding: 0 15px;
  color: var(--ink);
  background: rgba(2, 17, 30, .3);
  border: 1px solid var(--line);
  border-radius: 15px;
  font-size: 11px;
}

html[data-theme="day"] .filter-panel :is(input, select) {
  background: rgba(255, 255, 255, .7);
}

.filter-panel select option {
  color: #07172b;
}

.catalogue-summary {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px clamp(20px, 4vw, 54px);
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 9px;
}

.catalogue-summary #resultCount {
  color: var(--ink);
  font-weight: 820;
}

.resource-list {
  min-height: 260px;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(20px, 3.5vw, 46px) clamp(20px, 4vw, 54px) clamp(28px, 4vw, 56px);
}

.course-workspace-card {
  min-height: 210px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(180px, auto);
  align-items: center;
  gap: 24px;
  padding: clamp(22px, 3vw, 36px);
  background:
    radial-gradient(circle at 92% 20%, rgba(139, 216, 255, .11), transparent 28%),
    rgba(139, 216, 255, .045);
  border: 1px solid var(--line);
  border-radius: 26px;
}

.resource-file-mark {
  width: 76px;
  height: 92px;
  display: grid;
  place-items: center;
  color: var(--navy-950);
  background: linear-gradient(155deg, #fff, #b9e8ff 66%, #ffe29b);
  border-radius: 17px 17px 17px 5px;
  box-shadow: 0 15px 32px rgba(0, 8, 17, .22);
  font-size: 30px;
  font-weight: 900;
}

.resource-card-copy {
  min-width: 0;
}

.resource-card-kicker,
.resource-card-metadata,
.resource-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.resource-card-kicker span,
.resource-card-metadata span,
.trust-badge {
  padding: 5px 8px;
  color: var(--ink-soft);
  background: rgba(139, 216, 255, .055);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 8px;
  font-weight: 740;
}

.resource-card-copy h3 {
  margin: 12px 0 8px;
  color: var(--ink);
  font-size: clamp(22px, 2.5vw, 34px);
  letter-spacing: -.045em;
}

.resource-card-copy > p {
  max-width: 780px;
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.65;
}

.resource-card-metadata {
  margin-bottom: 10px;
}

.trust-badge.warning {
  color: #ffd985;
  border-color: rgba(244, 191, 71, .22);
}

html[data-theme="day"] .trust-badge.warning {
  color: #86600d;
}

.resource-card-action {
  display: grid;
  justify-items: end;
  gap: 10px;
  text-align: right;
}

.resource-card-action strong {
  color: var(--ink);
  font-size: 12px;
}

.resource-card-action button {
  min-height: 43px;
  padding: 0 15px;
  color: var(--ink-soft);
  background: rgba(139, 216, 255, .06);
  border: 1px solid var(--line);
  border-radius: 14px;
  font-size: 9px;
  font-weight: 800;
}

.empty-state,
.error-state {
  min-height: 230px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 9px;
  padding: 30px;
  text-align: center;
}

.empty-state > span,
.error-state > span {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: var(--navy-950);
  background: linear-gradient(135deg, var(--sky), #fff0b5);
  border-radius: 18px;
  font-size: 20px;
  font-weight: 900;
}

.empty-state strong,
.error-state strong {
  color: var(--ink);
  font-size: 18px;
}

.empty-state p,
.error-state p {
  max-width: 570px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.6;
}

.loading-state {
  min-height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.loading-state span {
  width: 9px;
  height: 9px;
  background: var(--sky);
  border-radius: 50%;
  animation: loadingPulse .9s ease-in-out infinite alternate;
}

.loading-state span:nth-child(2) { animation-delay: .15s; }
.loading-state span:nth-child(3) { animation-delay: .3s; }

@keyframes loadingPulse {
  to { opacity: .25; transform: translateY(-6px); }
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.safety-grid article {
  min-height: 220px;
  position: relative;
  overflow: hidden;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.safety-grid article::after {
  width: 120px;
  height: 120px;
  position: absolute;
  right: -46px;
  bottom: -54px;
  content: "";
  border: 1px solid var(--line);
  border-radius: 50%;
  box-shadow: 0 0 0 24px rgba(139, 216, 255, .02);
}

.safety-grid article > span {
  display: block;
  margin-bottom: 36px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 850;
}

.safety-grid strong {
  display: block;
  margin-bottom: 9px;
  color: var(--ink);
  font-size: 16px;
}

.safety-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.65;
}

.site-footer {
  width: min(var(--content), calc(100% - (2 * var(--gutter))));
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin: 0 auto;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  font-size: 9px;
}

.readiness-dialog {
  width: min(690px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  padding: 0;
  color: var(--ink);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 45px 120px rgba(0, 5, 12, .5);
}

.readiness-dialog::backdrop {
  background: rgba(0, 9, 18, .72);
  backdrop-filter: blur(13px);
}

.readiness-dialog form {
  display: grid;
  gap: 22px;
  padding: 30px;
}

.readiness-dialog header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.readiness-dialog h2 {
  margin: 7px 0 0;
  font-size: clamp(28px, 4.5vw, 44px);
  letter-spacing: -.055em;
}

.dialog-close {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  color: var(--ink);
  background: rgba(139, 216, 255, .055);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 20px;
}

.readiness-dialog form > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.7;
}

.readiness-checklist {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-block: 1px solid var(--line);
}

.readiness-checklist li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 11px;
  padding: 13px 2px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  font-size: 10px;
}

.readiness-checklist li:last-child {
  border-bottom: 0;
}

.readiness-checklist li > span:first-child {
  color: var(--danger);
}

.readiness-checklist b {
  color: var(--danger);
  font-size: 8px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.readiness-dialog .button {
  justify-self: end;
}

@media (max-width: 1120px) {
  .site-header-inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .brand-copy small {
    display: none;
  }

  .theme-control button span:last-child {
    display: none;
  }

  .coursekeys-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(285px, .9fr);
  }

  .readiness-strip {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 860px) {
  :root {
    --gutter: 18px;
  }

  .site-header-inner {
    min-height: 124px;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    padding: 10px 0 8px;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .header-controls {
    grid-column: 2;
    grid-row: 1;
  }

  .primary-navigation {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    padding-right: 16px;
  }

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

  .coursekeys-wallet {
    min-height: 270px;
  }

  .inventory-overview {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    grid-template-columns: 1fr 1fr;
  }

  .filter-panel .search-field {
    grid-column: 1 / -1;
  }

  .course-workspace-card {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .resource-card-action {
    grid-column: 1 / -1;
    justify-items: start;
    text-align: left;
  }
}

@media (max-width: 620px) {
  .brand-copy {
    display: none;
  }

  .header-controls {
    gap: 5px;
  }

  .language-control {
    width: 42px;
    overflow: hidden;
  }

  .language-control select {
    width: 1px;
    position: absolute;
    inset: 0;
    max-width: none;
    opacity: 0;
  }

  .coursekeys-global-notice {
    align-items: flex-start;
    flex-wrap: wrap;
    padding-block: 12px;
  }

  .coursekeys-global-notice p {
    min-width: calc(100% - 36px);
  }

  .coursekeys-global-notice button {
    margin-left: 33px;
  }

  .coursekeys-main {
    padding-top: 18px;
  }

  .coursekeys-hero {
    min-height: 0;
    padding: 28px 22px;
    border-radius: 27px;
  }

  .hero-copy h1 {
    font-size: clamp(40px, 13vw, 58px);
  }

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

  .readiness-strip,
  .inventory-overview {
    padding: 24px 20px;
  }

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

  .inventory-stat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .library-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .library-header .button {
    width: 100%;
  }

  .filter-panel {
    grid-template-columns: 1fr;
  }

  .filter-panel .search-field {
    grid-column: auto;
  }

  .catalogue-summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .course-workspace-card {
    grid-template-columns: 1fr;
  }

  .resource-file-mark {
    width: 58px;
    height: 70px;
  }

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

  .safety-grid article {
    min-height: 185px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 22px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}