body {
    margin: 0;
    font-family: 'Inria Sans', sans-serif;
}

.container {
    max-width: 1200px;
    min-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    background-color: #9BE6FF;
}

header {
    position: relative;
    width: 100%;
    height: 250px;
    background-color: #CBF3FF;
}

header h1 {
    font-family: 'Inria Serif', serif;
    font-size: 10px;
    position: absolute;
    top: 10px;
    right: 10px;
}

.staircase {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
}

.staircase div {
    font-family: 'Josefin Slab', serif;
    font-size: 60px;
    margin: 3px 0;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.staircase .left {
    text-align: left;
    padding-left: 10px;
    color: #007ACC;
}

.staircase .center {
    text-align: center;
    color: #005BB5;
}

.staircase .right {
    text-align: right;
    padding-right: 10px;
    color: #003F7F;
}

#banner {
    position: absolute;
    top: 50%;
    width: 100%;
    height: 120px;
    transform: translateY(-50%);
}

.ball {
    width: 30px;
    height: 30px;
    background-color: #80BBFF;
    border-radius: 50%;
    position: absolute;
    top: -15px;
    left: 220px;
    animation: ballMove 2s linear infinite alternate;
}

@keyframes ballMove {
    0% { left: 220px; }
    100% { left: calc(100% - 50px); }
}

.spinner {
    width: 30px;
    height: 30px;
    background-color: #4CAF50;
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    animation: rotate 3s linear infinite;
    transition: background-color 0.5s ease;
}

.spinner:hover {
    background-color: #ff3a3a; 
}

@keyframes rotate {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg); }
}

.triangle {
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 40px solid #FFD700;
    position: absolute;
    top: 120px;
    right: 310px;
    animation: triangleMove 2s linear infinite alternate;
}

@keyframes triangleMove {
    0% { right: 270px; }
    100% { right: calc(100% - 50px); }
}

.columns {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px 20px;
    padding: 20px 0;
}

.columns section {
    flex: 0 0 calc(50% - 20px);
    text-align: left;
    background-color: #CBF3FF;
    padding: 20px;
    border-radius: 10px;
    box-sizing: border-box;
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.columns section:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.circle-title {
    width: 150px;
    height: 150px;
    line-height: 150px;
    border-radius: 50%;
    background-color: #80BBFF;
    color: white;
    text-align: center;
    margin: 0 auto 20px;
    font-size: 1.4em;
    font-family: 'Inria Serif', serif;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.columns section ul {
    list-style: none;
    padding-left: calc(50% - 75px);
}

.columns section ul li a {
    font-family: 'Inria Sans', sans-serif;
    text-decoration: none;
    color: #333;
    display: inline-block;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.columns section ul li a::before {
    content: "• ";
    color: black;
    font-weight: bold;
}

.columns section ul li a:hover {
    color: #4CAF50;
    padding-left: 5px;
}

footer {
    background-color: #CBF3FF;
    position: relative;
    height: 60px;
}

footer a {
    font-family: 'Inria Serif', serif;
    font-size: 15px;
    position: absolute;
    bottom: 10px;
    right: 10px;
    text-decoration: none;
    color: #333;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #4CAF50;
}