body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #fefefe;
    color: #333;
    font-smooth: auto;
    -webkit-font-smoothing: antialiased;
    -ms-text-size-adjust: 1,00%;
    -webkit-text-size-adjust: 100%;    
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #1e1e1e;
        color: #f4f4f4;
    }

    footer {
        border-top-color: #444;
        color: #bbb;
    }

    a {
        color: #ddd;
    }
}

.container {
    max-width: 55%;
    margin: 20px auto;
    padding: 20px;
}

@media (max-width: 768px) {
    .container {
        max-width: 90%;
    }
}

header {
    padding: 20px 0;    
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.post-header {
    border-bottom: none;   
}

.post-header a {
    color: inherit;
    text-decoration: none;
}

.post-header .site-title {
    margin-left: 10px;
}

.post-header .site-title a {
    color: inherit;
}

.site-title {
    font-size: 1.2rem;
    margin: 0;
    font-weight: normal;    
}

.back-link {
    font-size: 1.5rem;
    margin-right: 15px;
    color: inherit;
    text-decoration: none;
}

.arrow {
  border: solid black;
  border-width: 0 2px 2px 0;
  display: inline-block;
  padding: 3px;    
}

.left {
  transform: rotate(135deg);
  -webkit-transform: rotate(135deg);
}

@media (prefers-color-scheme: dark) {
    .arrow {
        border: solid white;
        border-width: 0 2px 2px 0;
        display: inline-block;
        padding: 3px;    
    }
}

main {
    padding: 20px 0;
}

main .year {
    font-weight: 600;
}

li {
    font-size: 1.3rem;
}

.post-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 1.3rem;
}

.post-list li {
    margin-bottom: 35px;
    font-size: 1.3rem;
}

.post-list a {
    display: block;    
    color: inherit;
    text-decoration: none;
    padding: 10px 0;
}

.post-list a:hover {
    text-decoration: underline;
}

.post-content h1, h2, h3, h4 {
    font-weight: 500;
}

.post-content h1 {
    font-size: 2.1rem;
    margin-top: 0;
    margin-bottom: 20px;   
    letter-spacing: -2px; 
}

.post-content h2 {
    font-size: 1.9rem;
    margin-top: 40px;
    margin-bottom: 10px; 
    letter-spacing: -1px;   
}

.post-content h3 {
    font-size: 1.6rem;
    margin-top: 30;
    margin-bottom: 10px;    
}

.post-content h4 {
    font-size: 1.4rem;
    margin-top: 30;
    margin-bottom: 10px;    
}


.post-content p {
    font-size: 1.3rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

.post-content ul, .post-content ol {
    padding-left: 20px;
    margin-bottom: 20px;
}

.post-content a {
    color: inherit;
}

footer {
    padding-top: 20px;
    border-top: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.2rem;    
}

.copyright {
    margin: 0;
}

.footer-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}

.footer-nav li {
    margin-left: 20px;
    font-size: 1.2rem;
}

.footer-nav a {
    color: inherit;
    text-decoration: none;
}