body {
    max-width: 650px;
    margin: 40px auto;
    padding: 0 10px;
    font:
        18px/1.5 -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        "Helvetica Neue",
        Arial,
        "Noto Sans",
        sans-serif,
        "Apple Color Emoji",
        "Segoe UI Emoji",
        "Segoe UI Symbol",
        "Noto Color Emoji";
    color: #444;
}
h1,
h2,
h3 {
    line-height: 1.2;
}

@media (prefers-color-scheme: dark) {
    body {
        color: #c9d1d9;
        background: #0d1117;
    }
    a:link {
        color: #58a6ff;
    }
    a:visited {
        color: #8e96f0;
    }
    .main-nav a {
        color: #c9d1d9;
        border-color: #30363d;
    }
    .main-nav a:hover {
        background-color: #21262d;
        color: #58a6ff;
        border-color: #58a6ff;
    }
    .site-footer {
        color: #8b949e;
    }
    .site-footer hr {
        border-top-color: #21262d;
    }
    .article-item {
        border-bottom-color: #21262d;
    }
    .article-item time {
        color: #8b949e;
    }
}

.main-nav {
    margin: 2rem 0;
    text-align: center;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}
.main-nav a {
    display: block;
    padding: 0.75rem 1.25rem;
    font-size: 1.25rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
    border: 2px solid #333;
    transition: all 0.2s ease;
}
.main-nav a:hover {
    background-color: #333;
    color: #fff;
}
@media (max-width: 600px) {
    .main-nav {
        flex-direction: column;
        align-items: center;
    }
    .main-nav a {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }
}
@media (prefers-color-scheme: dark) {
    .main-nav a {
        color: #c9d1d9;
        border-color: #58a6ff;
    }
    .main-nav a:hover {
        background-color: #21262d;
        color: #58a6ff;
        border-color: #58a6ff;
    }
}
@media (max-width: 300px) {
    .main-nav {
        flex-direction: column;
        align-items: center;
    }
    .main-nav a {
        width: 100%;
        max-width: 180px;
        text-align: center;
    }
}
.site-title {
    text-align: center;
}
.site-title a {
    text-decoration: none;
    color: inherit;
}
.site-title a.section-link {
    color: #666;
}
.site-title a.section-link:hover {
    text-decoration: underline;
}
@media (prefers-color-scheme: dark) {
    .site-title a.section-link {
        color: #8b949e;
    }
}

.site-footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #666;
  text-align: center;
}
.site-footer a {
  color: inherit;
  text-decoration: underline;
}
.site-footer hr {
  margin: 1.5rem 0;
  border: none;
  border-top: 1px solid #ccc;
  width: 100%;
}

main img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem 0;
}

.article-item {
    margin-bottom: 1.0rem;
    padding-bottom: 1.0rem;
    border-bottom: 1px solid #ddd;
}
.article-item:last-child {
    border-bottom: none;
}
.article-item h3 {
    margin-bottom: 0.25rem;
}
.article-item time {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}
.article-item p {
    margin-top: 0.5rem;
}