#online-deep-learning-with-pytorch-and-river {
  display: none;
}

.landing-hero {
  position: relative;
  overflow: hidden;
  min-height: min(34rem, 72vh);
  margin: 0 0 2.4rem;
  padding: clamp(2.5rem, 8vw, 5.8rem) 1.25rem;
  border-radius: 1.6rem 1.6rem 1.6rem 1.6rem;
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0) 24%),
    radial-gradient(circle at 82% 28%, rgba(255, 210, 122, 0.42), rgba(255, 210, 122, 0) 28%),
    linear-gradient(145deg, #ff8f00 0%, #c052c7 58%, #3b5bdc 100%);
  color: #ffffff;
  box-shadow: 0 1.4rem 3.6rem rgba(69, 44, 125, 0.24);
}

.landing-hero::after {
  position: absolute;
  inset: auto -10% -34% 34%;
  height: 18rem;
  content: "";
  background: rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  transform: rotate(-8deg);
}

.landing-hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
}

.landing-logo {
  width: min(18rem, 70vw);
  height: auto;
  margin-bottom: 0.8rem;
  filter: drop-shadow(0 1rem 1.8rem rgba(44, 18, 69, 0.22));
}

.landing-eyebrow {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
}

.landing-lead {
  max-width: 43rem;
  margin: 0.8rem 0 0;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.94);
}

.landing-cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
  margin-top: 1.35rem;
}

a.landing-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  padding: 0.42rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.66);
  border-radius: 999px;
  font-weight: 750;
  text-decoration: none;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.13);
  box-shadow: 0 0.6rem 1.5rem rgba(37, 18, 80, 0.16);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

a.landing-cta:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.22);
  box-shadow: 0 0.9rem 1.9rem rgba(37, 18, 80, 0.2);
  transform: translateY(-1px);
}

a.landing-cta-primary {
  color: #472563;
  background: #ffffff;
  border-color: #ffffff;
}

a.landing-cta-primary:hover {
  color: #472563;
  background: #fff7e8;
}

.landing-grid {
  display: grid;
  gap: 1rem;
}

.landing-intro-grid {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: stretch;
  margin-bottom: 2rem;
}

.landing-panel,
.landing-card {
  border: 1px solid rgba(120, 93, 145, 0.18);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 251, 244, 0.7));
  box-shadow: 0 0.8rem 2rem rgba(38, 34, 63, 0.07);
}

.landing-panel {
  padding: 1.1rem 1.2rem;
}

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

.landing-panel pre {
  margin: 0.65rem 0 0;
  padding: 0.75rem 0.85rem;
  border-radius: 0.7rem;
  background: #f4edf7;
}

.landing-panel code {
  color: #2c1e36;
  background: transparent;
  white-space: pre-wrap;
}

.landing-code-panel {
  background:
    linear-gradient(180deg, rgba(28, 25, 43, 0.96), rgba(50, 38, 72, 0.96));
  color: #ffffff;
}

.landing-code-panel h2 {
  color: #ffffff;
}

.landing-code-panel pre {
  background: #201a2d;
}

.landing-code-panel code {
  color: #fff4d8;
  background: transparent;
}

.landing-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.landing-card {
  padding: 1rem;
}

.landing-card p {
  margin-bottom: 0;
}

@media (max-width: 800px) {
  .landing-hero {
    min-height: auto;
    margin-inline: -0.6rem;
    border-radius: 0 0 1.1rem 1.1rem;
  }

  .landing-intro-grid,
  .landing-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .landing-hero {
    padding: 2.25rem 1rem 2.6rem;
  }

  .landing-logo {
    width: min(14rem, 76vw);
  }

  .landing-cta-row {
    width: 100%;
  }

  a.landing-cta {
    width: 100%;
  }
}