:root {
    --bg-color: #87CEEB;
    --platform-color: #FFFFFF;
    --penguin-color: #333;
    --text-color: #000000;
}

body {
    margin: 0;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to bottom, #87CEEB, #FFFFFF);
}

penguin-game {
    position: relative;
    width: 375px;
    height: 667px;
    background-color: var(--bg-color);
    overflow: hidden;
    border: 2px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.penguin {
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: var(--penguin-color);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    bottom: 50px;
    left: calc(50% - 20px);
}

.platform {
    position: absolute;
    width: 80px;
    height: 20px;
    background-color: var(--platform-color);
    border-radius: 10px;
}

.score {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 24px;
    color: var(--text-color);
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: var(--text-color);
    text-align: center;
}