body {
    font-family: 'PingFang SC', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

header {
    color: white;
    text-align: center;
    padding: 30px 20px;
    position: relative;
}

header h1 {
    margin: 0;
    font-size: clamp(2em, 5vw, 2.8em);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

header .created-date {
    font-size: clamp(1em, 3vw, 1.2em);
    margin-top: 10px;
}

nav {
    background-color: #333;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-size: clamp(0.9em, 2.5vw, 1.1em);
    transition: color 0.3s;
}

nav a:hover {
    color: #50e3c2;
}

.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0 15px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post {
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.post h2 {
    margin: 0 0 10px;
    color: #4a90e2;
    font-size: clamp(1.2em, 3.5vw, 1.5em);
}

.post .date {
    color: #888;
    font-size: clamp(0.8em, 2vw, 0.9em);
    margin-bottom: 10px;
}

.post p {
    margin: 0;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #333;
    color: white;
    margin-top: 40px;
}

@media (max-width: 768px) {
    nav {
        padding: 5px 0;
    }
    nav a {
        margin: 0 10px;
        display: inline-block;
    }
    .container {
        margin: 10px auto;
        padding: 0 10px;
    }
    .post {
        padding: 15px;
    }
}