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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #333;
    background: #fff;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    border-bottom: 1px solid #eee;
    padding: 20px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 1px;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #666;
    font-size: 14px;
}

.btn-post {
    background: #000;
    color: #fff !important;
    padding: 8px 16px;
    border-radius: 4px;
}

main {
    padding: 60px 0;
}

h2 {
    font-size: 28px;
    font-weight: 300;
    margin-bottom: 30px;
    color: #222;
}

.categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 20px;
    text-decoration: none;
    color: #333;
    border: 1px solid #f0f0f0;
    border-radius: 8px;
    transition: border-color 0.2s;
}

.category-card:hover {
    border-color: #ddd;
}

.icon {
    font-size: 32px;
    margin-bottom: 10px;
}