/* css styles */
h1, h2, h3, h4 {
  font-family: 'Fira Sans', sans-serif;
  font-weight: 700;
  margin-top: 1.5em;
  color: #2b4162;
}

h1 {
  font-size: 2.2em;
  border-bottom: 2px solid #6c757d;
  padding-bottom: 0.2em;
}

h2 {
  font-size: 1.7em;
  color: #3b5998;
}

h3 {
  font-size: 1.4em;
  color: #5f6368;
  font-style: italic;
}


.sidebar-navigation {
  background-color: #f9fafe; /* light pastel background */
  padding-left: 16px;
  padding-right: 16px;
  font-size: 14px;
  width: 220px;

  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.05); /* soft shadow */
  border-right: 1px solid #e0e6ed; /* subtle border */
}

.sidebar-navigation {
  background-color: #f9fafe;
  padding-left: 0px; /* Shift content left */
  padding-right: 16px;
  font-size: 14px;
  width: 220px;
  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.05);
  border-right: 1px solid #e0e6ed;
}

/* Reduce indentation inside each sidebar item */
.sidebar-navigation .sidebar-item,
.sidebar-navigation li,
.sidebar-navigation a {
  padding-left: 0px !important;
  padding-right: opx;
  margin-left: 0 !important;
}

.sidebar-navigation a.active {
  background-color: #eaeef2;  /* light highlight */
  font-weight: bold;
  color: #0366d6; /* GitHub-like link color */
  border-radius: 6px;
  padding-left: 12px;
}


```{css}
/* Overall landing layout */
.landing-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 80vh;
  text-align: center;
}

.landing-content {
  max-width: 800px;
  padding: 20px;
}

/* Animation keyframes */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Fade-in animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s ease-out forwards;
}

.delay-1 {
  animation-delay: 0.5s;
}

.delay-2 {
  animation-delay: 1s;
}

/* Text styles */
.landing-wrapper h1 {
  font-size: 3rem;
  max-width: 100%;
  color: #2c3e50;
}

.highlight {
  color: #1a73e8;
  font-weight: bold;
}

hr {
  margin: 20px auto;
  width: 60%;
  border: 1px solid #ccc;
}

.landing-wrapper p {
  max-width: 100%;
  font-size: 1.25rem;
  margin-top: 10px;
}
```
```{css}
.chart-animate {
  width: 400px;
  max-width: 80%;
  margin-top: 40px;
  animation: flyIn 1.2s ease-out forwards;
}

/* Flying-in animation */
@keyframes flyIn {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
```

.page-index .page-columns .content {
  max-width: 1200px;
  margin-left: 2rem;
  margin-right: 2rem;
}