body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    display: flex;
    flex-direction: column; /* 컨텐츠를 세로로 정렬 */
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    text-align: center;
}

.container {
    width: 80%;
    max-width: 900px;
    flex-grow: 1; /* 컨텐츠 영역이 남은 공간을 채우도록 함 */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 40px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.info-card {
    background-color: #1e1e1e;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 25px;
    transition: transform 0.2s;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card h2 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #bb86fc;
    font-size: 1.2em;
}

.info-card p {
    margin: 0;
    font-size: 1.5em;
}

.watermark {
    width: 100%;
    padding: 20px 0;
    font-size: 0.9em;
    color: #555;
    text-align: center;
}

/* 데스크탑 화면에서 가로로 배열 */
@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}