:root {
  --reionemu-bg: linear-gradient(180deg, #f4f8fc 0%, #edf4fb 100%);
  --reionemu-card: rgba(255, 255, 255, 0.86);
  --reionemu-card-border: rgba(53, 86, 120, 0.14);
  --reionemu-text-soft: #4c6278;
  --reionemu-text-strong: #102338;
  --reionemu-accent-text: #0e7490;
  --reionemu-glow: rgba(76, 201, 240, 0.18);
  --reionemu-header-bg: rgba(255, 255, 255, 0.78);
  --reionemu-header-border: rgba(53, 86, 120, 0.12);
  --reionemu-header-text: #102338;
  --reionemu-header-text-muted: rgba(16, 35, 56, 0.72);
}

[data-md-color-scheme="slate"] {
  --reionemu-bg: radial-gradient(circle at top, rgba(76, 201, 240, 0.18), transparent 32%),
    linear-gradient(180deg, #08111f 0%, #09131c 45%, #050a11 100%);
  --reionemu-card: rgba(10, 18, 30, 0.78);
  --reionemu-card-border: rgba(111, 168, 220, 0.2);
  --reionemu-text-soft: #a9bfd7;
  --reionemu-text-strong: #edf4ff;
  --reionemu-accent-text: #79d6ff;
  --reionemu-glow: rgba(76, 201, 240, 0.28);
  --reionemu-header-bg: rgba(4, 9, 16, 0.82);
  --reionemu-header-border: rgba(111, 168, 220, 0.12);
  --reionemu-header-text: #edf4ff;
  --reionemu-header-text-muted: rgba(237, 244, 255, 0.72);
  --md-default-bg-color: #050a11;
  --md-default-fg-color: #edf4ff;
  --md-default-fg-color--light: #a9bfd7;
  --md-primary-fg-color: #08111f;
  --md-accent-fg-color: #4cc9f0;
  --md-typeset-a-color: #79d6ff;
}

.md-header,
.md-tabs {
  background: var(--reionemu-header-bg);
  backdrop-filter: blur(14px);
}

.md-header {
  border-bottom: 1px solid var(--reionemu-header-border);
  color: var(--reionemu-header-text);
}

.md-tabs {
  border-bottom: 1px solid var(--reionemu-header-border);
  color: var(--reionemu-header-text);
}

.md-header__button.md-logo {
  margin: 0;
  padding: 0.2rem 0.25rem 0.2rem 0;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  width: auto;
  height: 2rem;
}

.md-header__title {
  color: var(--reionemu-header-text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.md-header__button,
.md-header__source,
.md-header__option,
.md-search__icon,
.md-search__input::placeholder {
  color: var(--reionemu-header-text-muted);
}

.md-tabs__link,
.md-header__topic,
.md-ellipsis {
  color: var(--reionemu-header-text);
}

.md-tabs__link {
  font-weight: 600;
}

.md-tabs__link--active,
.md-tabs__link:hover,
.md-header__button:hover,
.md-header__option:hover {
  color: var(--reionemu-header-text);
}

.md-main {
  background: var(--reionemu-bg);
}

.md-main__inner {
  margin-top: 0;
}

.md-content__inner {
  margin-top: 0.75rem;
  padding-bottom: 3rem;
}

.md-content h2 {
  margin-top: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.md-content p,
.md-content li {
  font-size: 0.96rem;
}

.md-content h1,
.md-content h2,
.md-content h3,
.md-content h4 {
  color: var(--reionemu-text-strong);
}

.hero {
  padding: 2.5rem 0 2.75rem;
}

.hero-logo {
  display: block;
  width: min(420px, 78%);
  margin: 0 0 1.25rem;
  filter: drop-shadow(0 20px 40px var(--reionemu-glow));
}

.hero-kicker {
  margin: 0 0 0.75rem;
  color: var(--reionemu-accent-text);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.4rem, 5.8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.hero-copy {
  max-width: 46rem;
  margin: 1.25rem 0 0;
  color: var(--reionemu-text-soft);
  font-size: 1.08rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
  margin-top: 1.4rem;
}

.feature-card {
  padding: 1.25rem 1.15rem;
  border: 1px solid var(--reionemu-card-border);
  border-radius: 20px;
  background: var(--reionemu-card);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

[data-md-color-scheme="default"] .feature-card {
  box-shadow: 0 18px 40px rgba(67, 94, 126, 0.12);
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--reionemu-text-soft);
  line-height: 1.65;
}

.md-typeset .md-button {
  border-radius: 999px;
  font-weight: 700;
  padding: 0.75em 1.25em;
}

.md-typeset .md-button--primary {
  box-shadow: 0 12px 30px rgba(76, 201, 240, 0.2);
}

.md-sidebar--secondary {
  display: none;
}

@media screen and (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.15rem, 10vw, 3.4rem);
    line-height: 1.05;
  }

  .md-header__button.md-logo img,
  .md-header__button.md-logo svg {
    height: 1.7rem;
  }
}