:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #64748b;
  --line: #d8e0ed;
  --blue: #2563eb;
  --green: #16a34a;
  --paper: #f6f9fc;
}

* {
  box-sizing: border-box;
}

body.learn-page {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(180deg, #eef6ff, #ffffff 34%, #f6f9fc);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.learn-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
}

.learn-nav a {
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
}

.learn-nav > .section-home-link {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  color: var(--blue);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.learn-nav > .section-home-link::before {
  content: "";
  width: 19px;
  height: 19px;
  background: currentColor;
  mask: url("https://api.iconify.design/lucide/house.svg") center / contain no-repeat;
  -webkit-mask: url("https://api.iconify.design/lucide/house.svg") center / contain no-repeat;
}

.learn-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.learn-nav nav a {
  display: inline-grid;
  grid-template-columns: 16px max-content;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.72);
  color: #334155;
  font-size: 13px;
}

.learn-nav nav a::before {
  content: "";
  width: 16px;
  height: 16px;
  background: currentColor;
  mask: var(--learn-icon) center / contain no-repeat;
  -webkit-mask: var(--learn-icon) center / contain no-repeat;
}

.learn-nav nav a[data-icon="workspace"] {
  --learn-icon: url("https://api.iconify.design/lucide/panels-top-left.svg");
}

.learn-nav nav a[data-icon="book-open"] {
  --learn-icon: url("https://api.iconify.design/lucide/book-open.svg");
}

.learn-nav nav a[data-icon="video"] {
  --learn-icon: url("https://api.iconify.design/lucide/video.svg");
}

.learn-nav nav a[data-icon="image"] {
  --learn-icon: url("https://api.iconify.design/lucide/image.svg");
}

.learn-nav nav a[data-icon="music-2"] {
  --learn-icon: url("https://api.iconify.design/lucide/music-2.svg");
}

.learn-nav nav a[data-icon="captions"] {
  --learn-icon: url("https://api.iconify.design/lucide/captions.svg");
}

.learn-nav nav a[data-icon="upload-cloud"] {
  --learn-icon: url("https://api.iconify.design/lucide/upload-cloud.svg");
}

.learn-nav nav a.is-active,
.learn-nav nav a[aria-current="page"] {
  border-color: color-mix(in srgb, var(--blue) 58%, var(--line));
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--blue) 88%, #ffffff), var(--blue));
  color: #ffffff;
  box-shadow: 0 14px 30px color-mix(in srgb, var(--blue) 24%, transparent);
}

.learn-shell,
.article-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 64px;
}

.learn-hero {
  max-width: 860px;
  padding: 42px 0 24px;
}

.learn-hero p,
.article-document header p {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}

.learn-hero h1,
.article-document h1 {
  margin: 0;
  font-size: clamp(40px, 7vw, 78px);
  line-height: 0.96;
}

.learn-hero span,
.article-document header span {
  display: block;
  max-width: 720px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.learn-featured {
  display: grid;
  grid-template-columns: minmax(240px, 0.62fr) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
  min-height: 280px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: #ffffff;
  color: inherit;
  text-decoration: none;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
}

.learn-featured img,
.learn-card img,
.article-document header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.learn-featured span {
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 26px;
}

.learn-featured small,
.learn-card-fallback {
  color: var(--blue);
  font-size: 12px;
  font-weight: 950;
  text-transform: uppercase;
}

.learn-featured strong {
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1;
}

.learn-featured em,
.learn-card p,
.learn-empty p {
  color: var(--muted);
  font-style: normal;
  line-height: 1.55;
}

.learn-grid {
  columns: 3 260px;
  column-gap: 16px;
}

.learn-card,
.learn-empty {
  display: inline-grid;
  width: 100%;
  break-inside: avoid;
  gap: 10px;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: inherit;
  text-decoration: none;
}

.learn-card img,
.learn-card-fallback {
  aspect-ratio: 16 / 10;
  border-radius: 10px;
  background: linear-gradient(135deg, #dbeafe, #dcfce7);
}

.learn-card-fallback {
  display: grid;
  place-items: center;
}

.learn-card strong,
.learn-empty strong {
  font-size: 18px;
  line-height: 1.18;
}

.learn-card p {
  margin: 0;
  font-size: 14px;
}

.article-document {
  display: grid;
  gap: 24px;
  max-width: 920px;
  margin: 0 auto;
}

.article-document header {
  display: grid;
  gap: 14px;
  padding-top: 30px;
}

.article-document header img {
  max-height: 520px;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.article-body {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(20px, 4vw, 40px);
  background: #ffffff;
  color: #334155;
  font-size: 17px;
  line-height: 1.78;
}

.article-body p {
  margin: 0 0 1em;
}

@media (max-width: 760px) {
  .learn-nav,
  .learn-shell,
  .article-shell {
    width: min(100% - 24px, 560px);
  }

  .learn-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .learn-featured {
    grid-template-columns: 1fr;
  }
}