@charset "UTF-8";
/*! normalize.css v2.1.3 | MIT License | git.io/normalize */
/* ==========================================================================
   HTML5 display definitions
   ========================================================================== */
/**
 * Correct `block` display not defined in IE 8/9.
 */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
  display: block;
}

/**
 * Correct `inline-block` display not defined in IE 8/9.
 */
audio,
canvas,
video {
  display: inline-block;
}

/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */
audio:not([controls]) {
  display: none;
  height: 0;
}

/**
 * Address `[hidden]` styling not present in IE 8/9.
 * Hide the `template` element in IE, Safari, and Firefox < 22.
 */
[hidden],
template {
  display: none;
}

/* ==========================================================================
   Base
   ========================================================================== */
/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */
html {
  font-family: sans-serif;
  /* 1 */
  -ms-text-size-adjust: 100%;
  /* 2 */
  -webkit-text-size-adjust: 100%;
  /* 2 */
}

/**
 * Remove default margin.
 */
body {
  margin: 0;
}

/* ==========================================================================
   Links
   ========================================================================== */
/**
 * Remove the gray background color from active links in IE 10.
 */
a {
  background: transparent;
}

/**
 * Address `outline` inconsistency between Chrome and other browsers.
 */
a:focus {
  outline: thin dotted;
}

/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */
a:active,
a:hover {
  outline: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */
/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari 5, and Chrome.
 */
h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

/**
 * Address styling not present in IE 8/9, Safari 5, and Chrome.
 */
abbr[title] {
  border-bottom: 1px dotted;
}

/**
 * Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
 */
b,
strong {
  font-weight: bold;
}

/**
 * Address styling not present in Safari 5 and Chrome.
 */
dfn {
  font-style: italic;
}

/**
 * Address differences between Firefox and other browsers.
 */
hr {
  -webkit-box-sizing: content-box;
          box-sizing: content-box;
  height: 0;
}

/**
 * Address styling not present in IE 8/9.
 */
mark {
  background: #ff0;
  color: #000;
}

/**
 * Correct font family set oddly in Safari 5 and Chrome.
 */
code,
kbd,
pre,
samp {
  font-family: monospace, serif;
  font-size: 1em;
}

/**
 * Improve readability of pre-formatted text in all browsers.
 */
pre {
  overflow-x: auto;
}

/**
 * Set consistent quote types.
 */
q {
  quotes: "“" "”" "‘" "’";
}

/**
 * Address inconsistent and variable font size in all browsers.
 */
small {
  font-size: 80%;
}

/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

/* ==========================================================================
   Embedded content
   ========================================================================== */
/**
 * Remove border when inside `a` element in IE 8/9.
 */
img {
  border: 0;
}

/**
 * Correct overflow displayed oddly in IE 9.
 */
svg:not(:root) {
  overflow: hidden;
}

/* ==========================================================================
   Figures
   ========================================================================== */
/**
 * Address margin not present in IE 8/9 and Safari 5.
 */
figure {
  margin: 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */
/**
 * Define consistent border, margin, and padding.
 */
fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}

/**
 * 1. Correct `color` not being inherited in IE 8/9.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */
legend {
  border: 0;
  /* 1 */
  padding: 0;
  /* 2 */
}

/**
 * 1. Correct font family not being inherited in all browsers.
 * 2. Correct font size not being inherited in all browsers.
 * 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome.
 */
button,
input,
select,
textarea {
  font-family: inherit;
  /* 1 */
  font-size: 100%;
  /* 2 */
  margin: 0;
  /* 3 */
}

/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
button,
input {
  line-height: normal;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */
button,
select {
  text-transform: none;
}

/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */
button,
html input[type=button],
input[type=reset],
input[type=submit] {
  -webkit-appearance: button;
  /* 2 */
  cursor: pointer;
  /* 3 */
}

/**
 * Re-set default cursor for disabled elements.
 */
button[disabled],
html input[disabled] {
  cursor: default;
}

/**
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */
input[type=checkbox],
input[type=radio] {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  /* 1 */
  padding: 0;
  /* 2 */
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
 *    (include `-moz` to future-proof).
 */
input[type=search] {
  -webkit-appearance: textfield;
  /* 1 */
  -webkit-box-sizing: content-box;
  /* 2 */
  box-sizing: content-box;
}

/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */
input[type=search]::-webkit-search-cancel-button,
input[type=search]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * Remove inner padding and border in Firefox 4+.
 */
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/**
 * 1. Remove default vertical scrollbar in IE 8/9.
 * 2. Improve readability and alignment in all browsers.
 */
textarea {
  overflow: auto;
  /* 1 */
  vertical-align: top;
  /* 2 */
}

/* ==========================================================================
   Tables
   ========================================================================== */
/**
 * Remove most spacing between table cells.
 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/*! Another Sky Styles */
:root {
  color-scheme: light dark;
}

@font-face {
  font-family: "Noto Sans JP";
  src: url("/font/NotoSansJP-VariableFont_wght.woff2") format("woff-variations");
  font-weight: 400 500;
  font-display: swap;
}
body {
  border-top: 3px solid #2B4B95;
  color: #333;
  font-family: "Noto Sans JP", "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, "sans-serif";
  font-weight: 400;
  -webkit-text-size-adjust: 100%;
}

a:link {
  color: #003399;
}

a:visited {
  color: #5532AD;
}

a:hover,
a:active,
a:focus {
  color: #3366cc;
}

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

body > svg[aria-hidden=true] {
  visibility: hidden;
  height: 0;
}

.page-container {
  margin: 0 auto;
  padding: 0 10px 20px;
  width: 850px;
}
@media only screen and (max-width: 869px) {
  .page-container {
    margin: 0;
    width: auto;
  }
}

.page-header {
  margin-bottom: 1em;
}

.page-logo {
  margin: 0.67em 0;
  font-size: 2em;
}
.page-logo svg {
  width: 320px;
  height: 188px;
}
@media only screen and (max-width: 767px) {
  .page-logo svg {
    width: 60vw;
    max-width: 320px;
    height: 35.25vw;
    max-height: 188px;
  }
}
.page-logo .label {
  position: absolute;
  overflow: hidden;
  clip: rect(0.0625rem, 0.0625rem, 0.0625rem, 0.0625rem);
  width: 0.0625rem;
  height: 0.0625rem;
}

#site-logo .sitename {
  fill: #2B4B95;
}
#site-logo .subtext {
  fill: #4d4d4d;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Noto Sans JP", sans-serif;
  font-variation-settings: "wght" 500;
  font-weight: 500;
  font-style: normal;
}

section {
  margin-bottom: 3em;
}
section:last-child {
  margin-bottom: 0;
}

.article-header {
  margin-bottom: 2em;
}
.article-header h1 {
  margin: 0 0 0.25em;
  font-size: 1.625em;
}
.article-header .date {
  font-size: 0.875em;
}
.article-header .date div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.article-header .date dd {
  margin-left: 1em;
}

.article-body {
  margin-bottom: 3em;
  line-height: 2;
}
@media only screen and (max-width: 767px) {
  .article-body {
    line-height: 1.75;
  }
}
.article-body h2 {
  margin-top: 2em;
  padding-bottom: 0.25em;
  border-bottom: 1px dotted #999;
  font-size: 1.375em;
}
.article-body h2:first-child {
  margin-top: 0;
}
.article-body h3 {
  margin: 2em 0 0.5em;
  font-size: 1.25em;
}
.article-body h2 + h3 {
  margin-top: 1em;
}
.article-body h3 + p {
  margin-top: 0.5em;
}
.article-body img {
  max-width: 100%;
  height: auto;
}
.article-body img[src*="flickr.com"] {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin-top: 0.5em;
  border: 9px solid #fff;
  border-radius: 5px;
  -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
          box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.article-body p > img {
  margin: 0.5em 0;
}
.article-body img.bordered {
  padding: 10px;
  border: 1px solid #aaa;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}
.article-body strong {
  color: #b91939;
}
.article-body pre,
.article-body pre[class*=language-] {
  margin: 1em 0;
  padding: 10px;
  border-radius: 3px;
  background-color: #333;
  line-height: 1.4285714286em;
  color: #f0f0f0;
  font-size: 0.875em;
}
.article-body pre:not([class]) code,
.article-body pre[class*=language-]:not([class]) code {
  font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
}
.article-body pre .token.namespace,
.article-body pre[class*=language-] .token.namespace {
  opacity: 1;
}
.article-body p > code,
.article-body li > code,
.article-body dd > code,
.article-body td > code {
  padding: 0.25em;
  border-radius: 3px;
  background-color: #f5f2f0;
  color: #b91939;
  font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
  font-size: 0.875em;
}
.article-body blockquote {
  margin-right: 2em;
  margin-left: 2em;
  border-left: 5px solid #5683b0;
  padding: 0 0 0 2em;
  color: #666;
}
@media screen and (max-width: 480px) {
  .article-body blockquote {
    margin-right: 1em;
    margin-left: 1em;
    padding: 0 0 0 1.75em;
    background-size: 20px auto;
  }
}
.article-body dl dt {
  font-weight: bold;
}
.article-body dl dd {
  margin-left: 1em;
}
.article-body dl dd:not(:last-child) {
  margin-bottom: 0.5em;
}
.article-body table {
  border-width: 1px 0 0 1px;
}
.article-body table,
.article-body table th,
.article-body table td {
  border-style: solid;
  border-color: #999;
}
.article-body table th,
.article-body table td {
  padding: 5px 10px;
  border-width: 0 1px 1px 0;
}
.article-body table thead th {
  background-color: #d4d4d4;
}
.article-body table tbody th {
  background-color: #efefef;
  text-align: left;
}

.list-tags {
  margin: 2em 0;
  padding: 10px;
  border: 1px solid #ddd;
  background-color: #f0f0f0;
  font-size: 0.875em;
}
.list-tags dt,
.list-tags dd {
  display: inline-block;
  vertical-align: top;
}
.list-tags dt:after {
  content: "：";
}
.list-tags dd {
  margin-left: 0;
  padding-left: 0;
}
.list-tags ul {
  margin: 0;
  padding: 0;
}
.list-tags ul li {
  float: left;
  list-style: none;
}
.list-tags ul li:before {
  content: ",";
  margin-right: 0.5em;
}
.list-tags ul li:first-child:before {
  content: "";
  margin-right: 0;
}

.article-share {
  margin: 2em 0;
}
.article-share > div {
  display: inline-block !important;
  margin-right: 5px;
  vertical-align: top;
}
.article-share .twitter-share-button {
  width: 98px !important;
}
.article-share .fb-like {
  width: 102px !important;
}
.article-share #___plusone_0 {
  width: 65px !important;
}

#disqus_thread {
  margin-bottom: 2em;
}

.nav-contents {
  margin: 0 0 2em;
  padding: 0;
  font-size: 14px;
}
.nav-contents.-privacy {
  margin: 2em 0 0;
}
.list-entries + .nav-contents {
  margin-top: 3em;
}
.nav-contents li {
  display: inline-block;
  margin: 0 20px 0 0;
  padding: 0;
  list-style: none;
}
.nav-contents li.prev a {
  padding-left: 27px;
}
.nav-contents li.prev a:before {
  left: 10px;
  margin-right: 5px;
  content: "◀";
}
.nav-contents li.next a {
  padding-right: 27px;
}
.nav-contents li.next a:after {
  right: 10px;
  margin-left: 5px;
  content: "▶";
}
.nav-contents li.index a {
  padding: 0.5em 1em 0.5em 2em;
  background-image: url(/images/icon_caret_right.svg);
  background-repeat: no-repeat;
  background-position: 1.125em center;
  background-size: 0.5em auto;
}
.nav-contents a {
  position: relative;
  padding: 5px 10px;
  background-color: #4d4d4d;
  color: #fff;
  text-decoration: none;
}
.nav-contents a:before, .nav-contents a:after {
  position: absolute;
  top: 50%;
  display: inline-block;
  margin-top: -6px;
  line-height: 1;
  font-size: 12px;
}
.nav-contents a:hover, .nav-contents a:active, .nav-contents a:focus {
  background-color: #666;
}

.list-entries {
  margin-left: 0.5em;
  padding: 0;
}
.list-entries li {
  position: relative;
  margin: 0 0 0.5em;
  padding: 0;
  padding-left: 1em;
  list-style: none;
}
.list-entries li time {
  margin-left: 0.5em;
  font-size: 0.75em;
}
.list-entries li::before {
  position: absolute;
  top: 0.5em;
  left: 0;
  display: inline-block;
  content: "";
  width: 8px;
  height: 9px;
  line-height: 9px;
  background: url(/images/blt_list.svg) no-repeat left top/8px auto;
}

.list-archive {
  margin-left: 0.5em;
  padding: 0;
}
.list-archive li {
  position: relative;
  display: inline-block;
  margin: 0 2em 0.5em 0;
  padding-left: 1em;
  list-style: none;
}
.list-archive li::before {
  position: absolute;
  top: 0.5em;
  left: 0;
  display: inline-block;
  content: "";
  width: 8px;
  height: 9px;
  line-height: 9px;
  background: url(/images/blt_list.svg) no-repeat left top/8px auto;
}

.list-aircraft-01, .list-aircraft-03 {
  display: grid;
  gap: 0.5em 1em;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  padding-left: 0;
}
.list-aircraft-01 li, .list-aircraft-03 li {
  position: relative;
  display: inline-block;
  margin: 0;
  padding-left: 1em;
  list-style: none;
}
.list-aircraft-01 li::before, .list-aircraft-03 li::before {
  position: absolute;
  top: 0.5em;
  left: 0;
  display: inline-block;
  content: "";
  width: 8px;
  height: 9px;
  line-height: 9px;
  background: url(/images/blt_list.svg) no-repeat left top/8px auto;
}

.list-aircraft-02 {
  display: grid;
  gap: 1em 3.4%;
  grid-template-columns: repeat(auto-fill, minmax(164px, 1fr));
  padding-left: 0;
}
.list-aircraft-02 li {
  list-style: none;
}
.list-aircraft-02 img {
  aspect-ratio: 226/151;
  vertical-align: bottom;
}

.list-aircraft-03 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.page-meta {
  margin: 3em 0 0;
  padding: 0.5em 0 2em;
  border-top: 1px solid #ddd;
}
.page-meta .profile {
  position: relative;
  margin-bottom: 0;
  padding-left: 70px;
}
.page-meta .profile dt {
  margin-bottom: 0.5em;
}
.page-meta .profile dt img {
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
}
.page-meta .profile dd {
  margin: 0;
  line-height: 1.4285714286;
  font-size: 14px;
}
.page-meta .list-linkicons {
  margin-top: 0.5em;
}

.list-linkicons {
  margin: 0;
  padding: 0;
}
.list-linkicons > li {
  display: inline-block;
  margin-right: 5px;
}

.form-search-entry input {
  border: 1px solid #ccc;
  border-radius: 3px;
  line-height: 1.2;
}
.form-search-entry .keyword {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin-right: 5px;
  padding: 5px;
  width: 300px;
}
@media screen and (max-width: 599px) {
  .form-search-entry .keyword {
    max-width: 300px;
    width: 70%;
  }
}
.form-search-entry .submit {
  padding: 5px;
  width: 4em;
  background-color: #f8f8f8;
  color: #333;
}

.search-result-count {
  margin-bottom: 20px;
}

.search-result {
  margin-bottom: 60px;
}
.search-result .post {
  margin-bottom: 30px;
  padding-bottom: 30px;
  border-bottom: 1px dotted #999;
}
.search-result .post:last-child {
  padding-bottom: 0;
  border-bottom-width: 0;
}
.search-result .hdg {
  margin-bottom: 0;
}
.search-result time,
.search-result p,
.search-result .url {
  font-size: 0.875em;
}
.search-result p {
  line-height: 1.5714285714;
}
.search-result .url a {
  color: #006621;
  text-decoration: none;
}

.youtube,
.slideshare {
  position: relative;
  overflow: hidden;
  padding-bottom: 56.25%;
  height: 0;
}
.youtube iframe,
.slideshare iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.slideshare iframe {
  max-width: 478px;
  max-height: 400px;
}

@media (prefers-color-scheme: dark) {
  body {
    border-top-color: #4288c0;
    background-color: #23303d;
    color: #fff;
  }

  a:link {
    color: #78c3ff;
  }
  a:visited {
    color: #e873ff;
  }
  a:hover, a:active, a:focus {
    color: #aad9ff;
  }

  #site-logo .sitename,
#site-logo .subtext {
    fill: #fff;
  }

  .article-body strong {
    color: #f7a445;
  }
  .article-body blockquote {
    border-left-color: #2e475e;
    color: #ccc;
  }
  .article-body table thead th {
    background-color: #333;
  }
  .article-body table tbody th {
    background-color: #4d4d4d;
  }
  .article-body p > code,
.article-body li > code,
.article-body dd > code,
.article-body td > code {
    background-color: #2d2d2d;
    color: #e2777a;
  }

  .list-tags {
    border-color: #666;
    background-color: #192734;
  }

  .form-search-entry .submit {
    background-color: initial;
    color: #fff;
  }

  .search-result .url a {
    color: #5eb544;
  }

  .nav-contents a {
    background-color: #2e475e;
    color: #78c3ff;
  }
  .nav-contents a:hover, .nav-contents a:active, .nav-contents a:focus {
    background-color: #395975;
    color: #bce1ff;
  }

  .list-entries li::before,
.list-archive li::before,
.list-aircraft-01 li::before,
.list-aircraft-02 li::before,
.list-aircraft-03 li::before {
    background-image: url(/images/blt_list_white.svg);
  }
}