/* Aethera learning pages: the existing map texture and site palette, with a quiet reading column. */
.learn-page {
  --learn-text: #ecfdf5;
  --learn-muted: #b5cdc1;
  --learn-accent: #9be8c9;
  --learn-cyan: #7cdeff;
  --learn-line: rgba(164, 143, 94, 0.28);
  color-scheme: dark;
  color: var(--learn-text);
  background:
    radial-gradient(ellipse at 0 30%, rgba(28, 128, 109, 0.14), transparent 35%),
    radial-gradient(ellipse at 100% 80%, rgba(25, 126, 143, 0.13), transparent 38%),
    url('/vtt/aethera-vtt-background.jpg') center top / 100% 100% no-repeat,
    #030705;
  background-attachment: fixed;
  font-family: Inter, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
  padding: 0 clamp(22px, 4vw, 64px);
}
.learn-page a {
  color: var(--learn-accent);
  text-underline-offset: 0.22em;
}
.learn-page a:hover {
  color: #e2fff2;
}
.learn-page a:focus-visible,
.learn-page summary:focus-visible,
.learn-table-wrap:focus-visible {
  outline: 3px solid #7cdeff;
  outline-offset: 5px;
  border-radius: 3px;
}
.learn-page .learn-cyan {
  color: var(--learn-cyan);
}
.learn-page h1,
.learn-page h2,
.learn-page h3 {
  color: inherit;
  letter-spacing: -0.025em;
  line-height: 1.22;
}
.learn-page h1 {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  margin: 0 0 28px;
  font-weight: 650;
  text-wrap: balance;
}
.learn-header {
  max-width: 1220px;
  margin: 0 auto;
  min-height: 122px;
  display: flex;
  align-items: center;
  gap: 54px;
  border-bottom: 1px solid var(--learn-line);
}
.learn-header .learn-brand {
  color: var(--learn-text);
  font-size: 26px;
  letter-spacing: 0.25em;
  text-decoration: none;
  white-space: nowrap;
}
.learn-header nav {
  display: flex;
  gap: 40px;
  align-self: stretch;
  align-items: center;
}
.learn-header nav a {
  text-decoration: none;
  font-size: 17px;
  position: relative;
}
.learn-header nav .learn-current::after {
  content: '';
  position: absolute;
  height: 2px;
  background: #9be8c9;
  bottom: -43px;
  left: 0;
  right: 0;
}
.learn-header > .learn-button {
  margin-left: auto;
}
.learn-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid currentColor;
  border-radius: 4px;
  padding: 13px 25px;
  color: var(--learn-accent);
  text-decoration: none;
  font-size: 17px;
  font-weight: 550;
  line-height: 1.4;
  background: rgba(3, 10, 8, 0.55);
  transition: background-color 0.15s;
}
.learn-page .learn-button:hover {
  background: rgba(51, 128, 101, 0.18);
}
.learn-button .learn-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.learn-hub main {
  max-width: 1220px;
  margin: 0 auto;
}
.learn-intro {
  text-align: center;
  padding: 48px 12px 32px;
}
.learn-intro h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.25rem);
  line-height: 1.1;
  margin: 0 0 28px;
  font-weight: 650;
}
.learn-intro p {
  font-size: 19px;
  color: var(--learn-muted);
  margin: 0 auto;
  max-width: 850px;
}
.learn-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 12px 0 38px;
}
.learn-paths > div {
  padding: 0 30px;
  text-align: center;
}
.learn-paths > div + div {
  border-left: 1px solid var(--learn-line);
}
.learn-paths .learn-icon {
  width: 62px;
  height: 62px;
  color: var(--learn-accent);
  margin: 0 auto 12px;
}
.learn-paths .learn-cyan .learn-icon,
.learn-paths .learn-cyan .learn-button {
  color: var(--learn-cyan);
}
.learn-paths h2 {
  font-size: 29px;
  color: var(--learn-accent);
  margin: 0 0 13px;
  font-weight: 600;
}
.learn-paths .learn-cyan h2 {
  color: var(--learn-cyan);
}
.learn-paths p {
  color: var(--learn-muted);
  margin: 0 0 25px;
}
.learn-paths .learn-button {
  min-width: min(100%, 315px);
  font-size: 18px;
  padding: 15px 20px;
}
.learn-downloads {
  border-block: 1px solid var(--learn-line);
  background: rgba(7, 29, 23, 0.45);
  padding: 28px 18px;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 16px 22px;
  align-items: center;
}
.learn-downloads > .learn-icon {
  width: 66px;
  height: 66px;
  color: var(--learn-accent);
  grid-row: 1 / 3;
}
.learn-downloads h2 {
  margin: 0 0 8px;
  color: var(--learn-accent);
  font-size: 25px;
  font-weight: 550;
}
.learn-downloads p {
  margin: 0;
  color: var(--learn-muted);
}
.learn-download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  grid-column: 2;
}
.learn-download-actions .learn-button {
  font-size: 15px;
  padding: 12px 16px;
}
.learn-downloads .learn-spoilers {
  grid-column: 2;
  font-size: 14px;
}
.learn-resources {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 28px 0;
  text-align: center;
  padding: 6px 0;
}
.learn-resources a {
  padding: 0 20px;
  text-decoration: none;
  font-size: 18px;
}
.learn-resources a + a {
  border-left: 1px solid var(--learn-line);
}
.learn-footer {
  max-width: 1220px;
  margin: 0 auto;
  border-top: 1px solid var(--learn-line);
  padding: 28px 12px 38px;
  font-size: 14px;
  color: var(--learn-muted);
  text-align: center;
}
.learn-footer span {
  display: block;
  margin-top: 5px;
}
.learn-reader {
  max-width: 1220px;
  margin: 0 auto;
  padding-bottom: 32px;
}
.learn-breadcrumb {
  display: flex;
  gap: 18px;
  font-size: 15px;
  padding: 22px 0;
  color: var(--learn-muted);
}
.learn-breadcrumb a {
  text-decoration: none;
}
.learn-reader-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(30px, 4vw, 64px);
}
.learn-toc {
  border-right: 1px solid var(--learn-line);
  padding: 8px 20px 16px 0;
  position: sticky;
  top: 16px;
  align-self: start;
  max-height: calc(100vh - 32px);
  overflow: auto;
  scrollbar-width: thin;
}
.learn-toc h2,
.learn-mobile-toc h2 {
  margin: 0 0 15px;
  font-size: 18px;
  font-weight: 550;
  color: var(--learn-accent);
  letter-spacing: 0;
}
.learn-toc ol,
.learn-mobile-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
.learn-toc li {
  margin: 2px 0;
}
.learn-toc a {
  display: block;
  font-size: 14px;
  padding: 7px 10px;
  text-decoration: none;
  color: #cee1d6;
  border-left: 3px solid transparent;
}
.learn-toc a[aria-current='page'] {
  color: var(--learn-accent);
  border-left-color: var(--learn-accent);
  background: rgba(34, 93, 70, 0.16);
}
.learn-mobile-toc {
  display: none;
}
.learn-prose {
  min-width: 0;
  max-width: 820px;
  padding: 8px 24px 20px;
  background: rgba(3, 13, 10, 0.6);
  border-radius: 2px;
  font-size: 17px;
  line-height: 1.72;
}
.learn-prose h1 {
  color: #b5efda;
}
.learn-prose h2 {
  color: #b5efda;
  font-size: 23px;
  margin: 36px 0 16px;
  scroll-margin-top: 24px;
}
.learn-prose h3 {
  color: #b5efda;
  font-size: 19px;
  margin: 28px 0 14px;
}
.learn-prose p {
  margin: 0 0 20px;
}
.learn-prose strong {
  color: #def9ed;
  font-weight: 650;
}
.learn-prose li {
  margin-bottom: 13px;
  padding-left: 5px;
}
.learn-prose ul,
.learn-prose ol {
  padding-left: 25px;
  margin: 0 0 22px;
}
.learn-prose code {
  font-family: 'Cascadia Code', Consolas, monospace;
  font-size: 0.87em;
  color: #b6f2db;
  background: rgba(50, 94, 74, 0.26);
  padding: 2px 5px;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
.learn-prose figure {
  margin: 28px 0;
}
.learn-prose figure a {
  display: block;
}
.learn-prose figure img {
  display: block;
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: 650px;
  object-fit: contain;
  margin: 0 auto;
  border: 1px solid #284339;
  border-radius: 3px;
}
.learn-prose figcaption {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--learn-muted);
}
.learn-prose figcaption span {
  display: block;
  margin-top: 4px;
  color: var(--learn-accent);
}
.learn-checkpoint,
.learn-prose .learn-note {
  padding: 18px 22px;
  margin: 28px 0;
  border: 1px solid #315846;
  border-left: 3px solid var(--learn-accent);
  background: rgba(17, 40, 29, 0.7);
  border-radius: 3px;
}
.learn-checkpoint > strong {
  display: block;
  font-size: 19px;
  color: var(--learn-accent);
  margin-bottom: 7px;
}
.learn-checkpoint p {
  margin: 0;
}
.learn-download-inline {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.learn-download-inline .learn-button {
  font-size: 14px;
  padding: 12px 16px;
}
.learn-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  scrollbar-width: thin;
}
.learn-prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
  line-height: 1.6;
}
.learn-prose td,
.learn-prose th {
  text-align: left;
  padding: 13px;
  border: 1px solid #315846;
  vertical-align: top;
}
.learn-prose th {
  color: var(--learn-accent);
  background: #10231a;
}
.learn-prose td:first-child {
  min-width: 160px;
}
.learn-pager {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid var(--learn-line);
  font-size: 15px;
}
.learn-pager a {
  max-width: 48%;
  text-decoration: none;
}
.learn-pager a + a {
  text-align: right;
  margin-left: auto;
}
.learn-skip {
  position: absolute;
  top: -100px;
  left: 24px;
  padding: 10px 20px;
  background: #103022;
  z-index: 20;
}
.learn-skip:focus {
  top: 12px;
}
@media (min-width: 1280px) {
  .learn-downloads {
    grid-template-columns: 76px minmax(280px, 1fr) auto;
  }
  .learn-download-actions {
    grid-column: 3;
    grid-row: 1;
  }
  .learn-downloads > .learn-icon {
    grid-row: 1 / 3;
  }
  .learn-downloads .learn-spoilers {
    grid-column: 2 / 4;
  }
}
@media (max-width: 900px) {
  .learn-header {
    gap: 24px;
    min-height: 100px;
  }
  .learn-header .learn-brand {
    font-size: 21px;
    letter-spacing: 0.16em;
  }
  .learn-header nav {
    gap: 20px;
  }
  .learn-header nav a {
    font-size: 15px;
  }
  .learn-header nav .learn-current::after {
    bottom: -33px;
  }
  .learn-header > .learn-button {
    font-size: 14px;
    padding: 11px 15px;
  }
  .learn-reader-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 24px;
  }
  .learn-prose {
    padding: 8px 10px 20px;
  }
  .learn-paths > div {
    padding-inline: 18px;
  }
  .learn-paths h2 {
    font-size: 25px;
  }
}
@media (max-width: 680px) {
  .learn-page {
    padding: 0 22px;
    background-size:
      auto,
      auto,
      auto 100%,
      auto;
  }
  .learn-header {
    flex-wrap: wrap;
    gap: 14px;
    padding: 22px 0 16px;
    min-height: 0;
  }
  .learn-header .learn-brand {
    font-size: 21px;
    margin-right: auto;
  }
  .learn-header > .learn-button {
    order: 1;
    margin: 0;
  }
  .learn-header nav {
    order: 2;
    width: 100%;
    gap: 28px;
  }
  .learn-header nav .learn-current::after {
    bottom: -17px;
  }
  .learn-intro {
    padding: 37px 0 22px;
  }
  .learn-intro h1 {
    margin-bottom: 20px;
  }
  .learn-intro p {
    font-size: 17px;
  }
  .learn-desktop-break {
    display: none;
  }
  .learn-paths {
    grid-template-columns: 1fr;
    padding-bottom: 30px;
    gap: 28px;
  }
  .learn-paths > div {
    padding: 15px 0 28px;
  }
  .learn-paths > div + div {
    border-left: 0;
    border-top: 1px solid var(--learn-line);
    padding-top: 30px;
  }
  .learn-paths .learn-button {
    width: 100%;
    max-width: 360px;
    font-size: 17px;
  }
  .learn-paths .learn-icon {
    width: 50px;
    height: 50px;
  }
  .learn-downloads {
    display: block;
    padding: 25px 8px;
  }
  .learn-downloads > .learn-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
  }
  .learn-downloads h2 {
    font-size: 23px;
  }
  .learn-downloads p {
    font-size: 15px;
  }
  .learn-download-actions {
    display: grid;
    margin: 23px 0 18px;
    gap: 14px;
  }
  .learn-download-actions .learn-button {
    font-size: 14px;
    padding: 13px 10px;
  }
  .learn-resources {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  .learn-resources a + a {
    border: 0;
  }
  .learn-footer {
    font-size: 12px;
    padding-inline: 0;
  }
  .learn-reader-layout {
    display: block;
  }
  .learn-breadcrumb {
    padding: 22px 0 16px;
  }
  .learn-toc {
    display: none;
  }
  .learn-mobile-toc {
    display: block;
    border-block: 1px solid var(--learn-line);
    margin-bottom: 24px;
    padding: 10px 0;
    font-size: 15px;
  }
  .learn-mobile-toc summary {
    cursor: pointer;
    color: var(--learn-accent);
    padding: 5px;
  }
  .learn-mobile-toc nav {
    padding: 16px 8px 8px;
  }
  .learn-mobile-toc li {
    margin-bottom: 14px;
  }
  .learn-mobile-toc a {
    text-decoration: none;
  }
  .learn-prose {
    padding: 0 3px 20px;
    font-size: 16px;
    background: transparent;
  }
  .learn-prose h1 {
    font-size: 30px;
    line-height: 1.25;
    margin-bottom: 22px;
  }
  .learn-prose h2 {
    font-size: 22px;
  }
  .learn-checkpoint,
  .learn-prose .learn-note {
    padding: 16px;
  }
  .learn-prose ul,
  .learn-prose ol {
    padding-left: 22px;
  }
  .learn-prose td,
  .learn-prose th {
    padding: 10px;
  }
  .learn-pager {
    font-size: 14px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .learn-button {
    transition: none;
  }
}
@media print {
  .learn-page {
    background: #fff;
    color: #14231b;
    padding: 0;
  }
  .learn-header,
  .learn-toc,
  .learn-mobile-toc,
  .learn-breadcrumb,
  .learn-pager,
  .learn-skip {
    display: none;
  }
  .learn-reader-layout {
    display: block;
  }
  .learn-prose {
    max-width: none;
    background: #fff;
    padding: 0;
    font-size: 11pt;
  }
  .learn-page h1,
  .learn-page h2,
  .learn-page h3,
  .learn-prose strong,
  .learn-page a,
  .learn-prose th,
  .learn-prose code,
  .learn-prose figcaption,
  .learn-prose figcaption span,
  .learn-footer {
    color: #14231b;
  }
  .learn-checkpoint,
  .learn-prose .learn-note,
  .learn-prose th {
    background: #edf4ee;
    break-inside: avoid;
  }
  .learn-prose figure {
    break-inside: avoid;
  }
}