*, *::before, *::after {
  box-sizing: border-box;
}

html {
    font-size: 120%;
    line-height: 1.3;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, avenir next, avenir, segoe ui, helvetica neue, Adwaita Sans, Cantarell, Ubuntu, roboto, noto, helvetica, arial, sans-serif;
    background-color: #f8fafc;
    color: #0f172a;
}

hr {
    width: 70%;
    margin: 2em auto;
    border: 0;
    border-top: 1px solid #cbd5e1;
}

a {
    color: #075985;
}

a:hover {
    color: #082f49;
}

pre {
    padding: 1rem;
    overflow-x: scroll;
}

.wrapper {
    max-width: 820px;
    margin: 0 auto;
}

.site-header {
    height: 70px;
    display: flex;
    align-items: center;

    a {
        text-decoration: none;
    }
}

.site-title {
    font-size: 120%;
    font-family: Menlo, Consolas, Monaco, Adwaita Mono, Liberation Mono, Lucida Console, monospace;
    color: #0f172a;
}

.site-notices {
    font-size: 80%;
    color: #64748b;
    margin-top: 3em !important;
    margin-bottom: 1.5rem !important;

    p {
        margin: 0.5em 0;
    }
}

.introduction {
    margin: 2rem 0 2.5rem 0;
}

.post {
    header {
        text-align: center;
        margin-bottom: 2em;
    }

    h1, h2, h3 {
        font-weight: 400;
    }

    header > h1 {
        font-size: 1.8rem;
        margin-bottom: 0.3rem;
    }
}

.post-summary {
    header {
        text-align: center;
        margin-bottom: 2em;
    }

    header > h2 {
        font-size: 1.4rem;
        font-weight: 400;
        margin-bottom: 0.3rem;
    }

    header > h2 > a {
        color: #0f172a;
    }
}

.post-title {
    a {
        text-decoration: none;
    }
}

.date {
    font-size: 0.8rem;
    color: #334155;
}