<style>
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Georgia', serif;
    line-height: 1.6;
    color: #2c3e50;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    margin-bottom: 50px;
    animation: fadeInDown 0.8s ease;
}

h1 {
    font-size: 3.5em;
    font-weight: 300;
    color: #2c3e50;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.1em;
    color: #7f8c8d;
    font-style: italic;
    margin-bottom: 30px;
}

.intro-section {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 50px;
    animation: fadeIn 1s ease;
}

.intro-section p {
    font-size: 1.1em;
    line-height: 1.8;
    color: #555;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    animation: fadeIn 1.2s ease;
}

.blog-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.blog-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3em;
}

.blog-content {
    padding: 25px;
}

.blog-category {
    display: inline-block;
    padding: 5px 15px;
    background: #ecf0f1;
    border-radius: 20px;
    font-size: 0.85em;
    color: #7f8c8d;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-title {
    font-size: 1.4em;
    margin-bottom: 10px;
    color: #2c3e50;
}

.blog-excerpt {
    color: #7f8c8d;
    font-size: 0.95em;
    line-height: 1.6;
    margin-bottom: 15px;
}

.blog-date {
    font-size: 0.85em;
    color: #95a5a6;
    font-style: italic;
}

.blog-detail {
    display: none;
    background: white;
    border-radius: 15px;
    padding: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease;
}

.blog-detail.active {
    display: block;
}

.blog-detail h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
    color: #2c3e50;
}

.blog-detail .meta {
    color: #95a5a6;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #ecf0f1;
}

.blog-detail .content {
    font-size: 1.1em;
    line-height: 1.9;
    color: #555;
}

.blog-detail .content p {
    margin-bottom: 20px;
}

.back-button {
    display: inline-block;
    margin-bottom: 30px;
    padding: 10px 25px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.3s ease;
}

.back-button:hover {
    background: #2980b9;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5em;
    }

    .intro-section {
        padding: 25px;
    }

    .blog-detail {
        padding: 30px 20px;
    }
}
</style>