:root {
  --fore-color: #111;
  --secondary-fore-color: #444;
  --back-color: #f8f8f8;
  --secondary-back-color: #f0f0f0;
  --blockquote-color: #f50000;
  --pre-color: #1565c0;
  --border-color: #aaa;
  --secondary-border-color: #ddd;
  --a-link-color: #02449d;
  --a-visited-color: #02449d;

  --heading-ratio: 1.19;
  --universal-margin: 0.5rem;
  --universal-padding: 0.5rem;
  --universal-border-radius: 0.125rem;
  --system-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Helvetica, sans-serif;
  --pre-font: 'Courier New', Courier, monospace;
  --code-font: Menlo, Consolas, monospace;
  --font-weight: 300;
}
@media (prefers-color-scheme: dark) {:root {
  --fore-color: #f8f8f8;
  --secondary-fore-color: #ccc;
  --back-color: #111;
  --secondary-back-color: #0f0f0f;
  --blockquote-color: #f50000;
  --pre-color: #1565c0;
  --border-color: #666;
  --secondary-border-color: #333;
  --a-link-color: #3073cc;
  --a-visited-color: #276cc5;
}}

html {
  font-size: 16px;
}

a, b, del, em, i, ins, q, span, strong, u {
  font-size: 1em;
}

html, * {
  font-family: var(--system-font);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

* {
  font-size: 1rem;
}

body {
  margin: 0;
  color: var(--fore-color);
  background: var(--back-color);
}

details {
  display: block;
}

summary {
  display: list-item;
}

abbr[title] {
  border-bottom: none;
  text-decoration: underline dotted;
}

input {
  overflow: visible;
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin: calc(1.5 * var(--universal-margin)) var(--universal-margin);
  font-weight: 500;
}

h1 small, h2 small, h3 small, h4 small, h5 small, h6 small {
  color: var(--secondary-fore-color);
  display: block;
  margin-top: -0.25rem;
}

h1 {
  font-size: calc(1rem * var(--heading-ratio) * var(--heading-ratio) * var(--heading-ratio) * var(--heading-ratio));
}

h2 {
  font-size: calc(1rem * var(--heading-ratio) * var(--heading-ratio) * var(--heading-ratio));
}

h3 {
  font-size: calc(1rem * var(--heading-ratio) * var(--heading-ratio));
}

h4 {
  font-size: calc(1rem * var(--heading-ratio));
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: calc(1rem / var(--heading-ratio));
}

p {
  margin: var(--universal-margin);
}

ol, ul {
  margin: var(--universal-margin);
  padding-left: calc(2 * var(--universal-margin));
}

b, strong {
  font-weight: 700;
}

hr {
  box-sizing: content-box;
  border: 0;
  line-height: 1.25em;
  margin: var(--universal-margin);
  height: 0.0625rem;
  background: linear-gradient(to right, transparent, var(--border-color) 20%, var(--border-color) 80%, transparent);
}

blockquote {
  display: block;
  position: relative;
  font-style: italic;
  color: var(--secondary-fore-color);
  margin: var(--universal-margin);
  padding: calc(3 * var(--universal-padding));
  border: 0.0625rem solid var(--secondary-border-color);
  border-left: 0.375rem solid var(--blockquote-color);
  border-radius: 0 var(--universal-border-radius) var(--universal-border-radius) 0;
}

blockquote:before {
  position: absolute;
  top: calc(0rem - var(--universal-padding));
  left: 0;
  font-family: sans-serif;
  font-size: 3rem;
  font-weight: 700;
  content: "\201c";
  color: var(--blockquote-color);
}

blockquote[cite]:after {
  font-style: normal;
  font-size: 0.75em;
  font-weight: 700;
  content: "\a—  " attr(cite);
  white-space: pre;
}

code, kbd, pre, samp {
  font-family: var(--code-font);
  font-size: 0.85em;
}

code {
  background: var(--secondary-back-color);
  border-radius: var(--universal-border-radius);
  padding: calc(var(--universal-padding) / 4) calc(var(--universal-padding) / 2);
}

kbd {
  background: var(--fore-color);
  color: var(--back-color);
  border-radius: var(--universal-border-radius);
  padding: calc(var(--universal-padding) / 4) calc(var(--universal-padding) / 2);
}

pre {
  overflow: auto;
  background: var(--secondary-back-color);
  padding: calc(1.5 * var(--universal-padding));
  margin: var(--universal-margin);
  border: 0.0625rem solid var(--secondary-border-color);
  border-left: 0.25rem solid var(--pre-color);
  border-radius: 0 var(--universal-border-radius) var(--universal-border-radius) 0;
}

sup, sub, code, kbd {
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

small, sup, sub, figcaption {
  font-size: 0.75em;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

figure {
  margin: var(--universal-margin);
}

figcaption {
  color: var(--secondary-fore-color);
}

a {
  text-decoration: none;
}

a:link {
  color: var(--a-link-color);
}

a:visited {
  color: var(--a-visited-color);
}

a:hover, a:focus {
  text-decoration: underline;
}

/*
  Definitions for the grid system, cards and containers.
*/
.container {
  margin: 0 auto;
  padding: 0 calc(1.5 * var(--universal-padding));
}

.row {
  box-sizing: border-box;
  display: flex;
  flex: 0 1 auto;
  flex-flow: row wrap;
}

@media screen and (min-width: 768px) {
  .col-md,
  [class^='col-md-'],
  [class^='col-md-offset-'],
  .row[class*='cols-md-'] > * {
    box-sizing: border-box;
    flex: 0 0 auto;
    padding: 0 calc(var(--universal-padding) / 2);
  }
  .col-md,
  .row.cols-md > * {
    max-width: 100%;
    flex-grow: 1;
    flex-basis: 0;
  }
  .col-md-1,
  .row.cols-md-1 > * {
    max-width: 8.33333%;
    flex-basis: 8.33333%;
  }
  .col-md-offset-0 {
    margin-left: 0;
  }
  .col-md-2,
  .row.cols-md-2 > * {
    max-width: 16.66667%;
    flex-basis: 16.66667%;
  }
  .col-md-offset-1 {
    margin-left: 8.33333%;
  }
  .col-md-3,
  .row.cols-md-3 > * {
    max-width: 25%;
    flex-basis: 25%;
  }
  .col-md-offset-2 {
    margin-left: 16.66667%;
  }
  .col-md-4,
  .row.cols-md-4 > * {
    max-width: 33.33333%;
    flex-basis: 33.33333%;
  }
  .col-md-offset-3 {
    margin-left: 25%;
  }
  .col-md-5,
  .row.cols-md-5 > * {
    max-width: 41.66667%;
    flex-basis: 41.66667%;
  }
  .col-md-offset-4 {
    margin-left: 33.33333%;
  }
  .col-md-6,
  .row.cols-md-6 > * {
    max-width: 50%;
    flex-basis: 50%;
  }
  .col-md-offset-5 {
    margin-left: 41.66667%;
  }
  .col-md-7,
  .row.cols-md-7 > * {
    max-width: 58.33333%;
    flex-basis: 58.33333%;
  }
  .col-md-offset-6 {
    margin-left: 50%;
  }
  .col-md-8,
  .row.cols-md-8 > * {
    max-width: 66.66667%;
    flex-basis: 66.66667%;
  }
  .col-md-offset-7 {
    margin-left: 58.33333%;
  }
  .col-md-9,
  .row.cols-md-9 > * {
    max-width: 75%;
    flex-basis: 75%;
  }
  .col-md-offset-8 {
    margin-left: 66.66667%;
  }
  .col-md-10,
  .row.cols-md-10 > * {
    max-width: 83.33333%;
    flex-basis: 83.33333%;
  }
  .col-md-offset-9 {
    margin-left: 75%;
  }
  .col-md-11,
  .row.cols-md-11 > * {
    max-width: 91.66667%;
    flex-basis: 91.66667%;
  }
  .col-md-offset-10 {
    margin-left: 83.33333%;
  }
  .col-md-12,
  .row.cols-md-12 > * {
    max-width: 100%;
    flex-basis: 100%;
  }
  .col-md-offset-11 {
    margin-left: 91.66667%;
  }
  .col-md-normal {
    order: initial;
  }
  .col-md-first {
    order: -999;
  }
  .col-md-last {
    order: 999;
  }
}

/* personalization */
body {font-weight: var(--font-weight);}
hr {border:0; border-top: 1px solid var(--border-color); margin: 60px}
a {color: var(--a-link-color)}
a:visited {color: var(--a-visited-color)}
p {
  margin-top: 2rem;
}
pre {
  font-family: var(--pre-font);
  font-size: small; 
  background-color: var(--pre-back-color);
  border-color: var(--border-color);
  border-left: 3px solid var(--a-visited-color);
  white-space: pre-wrap; /* Breaks at word boundaries */
  overflow-wrap: break-word; /* Modern fallback */
  padding: 20px;
  margin:20px 0;
}
pre code {background-color: var(--pre-back-color); padding: 0;}
code {background-color: var(--pre-back-color);}
img {padding:0; margin: 10px auto; width: 100%;}
blockquote {border: 0; border-left: 3px solid var(--border-color); 
    margin: 0 10px; padding: 0.1rem 1rem;
}
input.ask {
    padding: 6px 16px;
    margin: 6px;
    font-size: 14px; 
    background-color: var(--back-color);
    color: var(--fore-color);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    width: 100%;
    max-width: 350px;
    float: right;
}
input.submit {
  background-color: var(--a-link-color);
  color:#fff;
  max-width: 77px;
}
em {font-family: 'Times New Roman', Times, serif; font-weight: 400px;}
span.br {color: #f00}
.logo-small span.br {color: var(--border-color)}
.container {margin: 10px auto; max-width: 1200px;}
.header {margin-top: 10px; padding: 0px 0; border-bottom: 1px solid var(--border-color)}
.contents {margin: 50px auto 60px; font-weight: 400;}
.section {margin-bottom: 60px;}
.logo {margin: 20px 0}
.logo a {font-size: 19px; font-weight: bold; text-decoration: none; color: var(--a-link-color) }
.logo a:visited {color: var(--a-link-color) }
.logo-small a {font-size: 14px; font-weight: normal; text-decoration: none; color: var(--border-color)}
.menu a {font-weight: 500;}
.menu a, .menu-admin a {text-decoration: none; margin: 0 4px; text-transform:uppercase}
.tagline {margin:6px 0}
.footer {margin-top: 30px; padding: 10px 0; font-size: small; border-top: 1px solid var(--border-color)}
.footer a {font-size: small; text-decoration: none; font-weight: 200;}
.copyright {font-size: small; margin-top: 4px;}
.thumbnail {max-width:100px; margin: 10px; border: 2px solid var(--border-color)}
.right {float: right}
.clear {clear: both}
.pagination {
    text-align: center;
    color: var(--a-hover-color);
    margin: 10px auto;
}
.pagination a {
    text-decoration: none;
    margin: 1px;
    background-color: #195bbe;
    color: #ccc;
    padding: 4px 8px;
    border-radius: 4px;
}
.pagination a:hover {
    background-color: #3869b3;
    color: #fff;
}
.pagination a.active {
    background-color: #f00;
    color: #fff;
}
.pagination a.disabled {
    background-color: var(--pre-back-color);
    color: #ccc;
}