/*! normalize.css v8.0.0 | MIT License | github.com/necolas/normalize.css */
/* Document
   ========================================================================== */
/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */
html {
  line-height: 1.15;
  /* 1 */
  -webkit-text-size-adjust: 100%;
  /* 2 */ }

/* Sections
    ========================================================================== */
/**
* Remove the margin in all browsers.
*/
body {
  margin: 0; }

/**
* Correct the font size and margin on `h1` elements within `section` and
* `article` contexts in Chrome, Firefox, and Safari.
*/
h1 {
  font-size: 2em;
  margin: 0.67em 0; }

/* Grouping content
    ========================================================================== */
/**
* 1. Add the correct box sizing in Firefox.
* 2. Show the overflow in Edge and IE.
*/
hr {
  box-sizing: content-box;
  /* 1 */
  height: 0;
  /* 1 */
  overflow: visible;
  /* 2 */ }

/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
pre {
  font-family: monospace, monospace;
  /* 1 */
  font-size: 1em;
  /* 2 */ }

/* Text-level semantics
    ========================================================================== */
/**
* Remove the gray background on active links in IE 10.
*/
a {
  background-color: transparent; }

/**
* 1. Remove the bottom border in Chrome 57-
* 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
*/
abbr[title] {
  border-bottom: none;
  /* 1 */
  text-decoration: underline;
  /* 2 */
  text-decoration: underline dotted;
  /* 2 */ }

/**
* Add the correct font weight in Chrome, Edge, and Safari.
*/
b,
strong {
  font-weight: bolder; }

/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
code,
kbd,
samp {
  font-family: monospace, monospace;
  /* 1 */
  font-size: 1em;
  /* 2 */ }

/**
* Add the correct font size in all browsers.
*/
small {
  font-size: 80%; }

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

sub {
  bottom: -0.25em; }

sup {
  top: -0.5em; }

/* Embedded content
    ========================================================================== */
/**
* Remove the border on images inside links in IE 10.
*/
img {
  border-style: none; }

/* Forms
    ========================================================================== */
/**
* 1. Change the font styles in all browsers.
* 2. Remove the margin in Firefox and Safari.
*/
button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  /* 1 */
  font-size: 100%;
  /* 1 */
  line-height: 1.15;
  /* 1 */
  margin: 0;
  /* 2 */ }

/**
* Show the overflow in IE.
* 1. Show the overflow in Edge.
*/
button,
input {
  /* 1 */
  overflow: visible; }

/**
* Remove the inheritance of text transform in Edge, Firefox, and IE.
* 1. Remove the inheritance of text transform in Firefox.
*/
button,
select {
  /* 1 */
  text-transform: none; }

/**
* Correct the inability to style clickable types in iOS and Safari.
*/
button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button; }

/**
* Remove the inner border and padding in Firefox.
*/
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0; }

/**
* Restore the focus styles unset by the previous rule.
*/
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText; }

/**
* Correct the padding in Firefox.
*/
fieldset {
  padding: 0.35em 0.75em 0.625em; }

/**
* 1. Correct the text wrapping in Edge and IE.
* 2. Correct the color inheritance from `fieldset` elements in IE.
* 3. Remove the padding so developers are not caught out when they zero out
*    `fieldset` elements in all browsers.
*/
legend {
  box-sizing: border-box;
  /* 1 */
  color: inherit;
  /* 2 */
  display: table;
  /* 1 */
  max-width: 100%;
  /* 1 */
  padding: 0;
  /* 3 */
  white-space: normal;
  /* 1 */ }

/**
* Add the correct vertical alignment in Chrome, Firefox, and Opera.
*/
progress {
  vertical-align: baseline; }

/**
* Remove the default vertical scrollbar in IE 10+.
*/
textarea {
  overflow: auto; }

/**
* 1. Add the correct box sizing in IE 10.
* 2. Remove the padding in IE 10.
*/
[type="checkbox"],
[type="radio"] {
  box-sizing: border-box;
  /* 1 */
  padding: 0;
  /* 2 */ }

/**
* Correct the cursor style of increment and decrement buttons in Chrome.
*/
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto; }

/**
* 1. Correct the odd appearance in Chrome and Safari.
* 2. Correct the outline style in Safari.
*/
[type="search"] {
  -webkit-appearance: textfield;
  /* 1 */
  outline-offset: -2px;
  /* 2 */ }

/**
* Remove the inner padding in Chrome and Safari on macOS.
*/
[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none; }

/**
* 1. Correct the inability to style clickable types in iOS and Safari.
* 2. Change font properties to `inherit` in Safari.
*/
::-webkit-file-upload-button {
  -webkit-appearance: button;
  /* 1 */
  font: inherit;
  /* 2 */ }

/* Interactive
    ========================================================================== */
/*
* Add the correct display in Edge, IE 10+, and Firefox.
*/
details {
  display: block; }

/*
* Add the correct display in all browsers.
*/
summary {
  display: list-item; }

/* Misc
    ========================================================================== */
/**
* Add the correct display in IE 10+.
*/
template {
  display: none; }

/**
* Add the correct display in IE 10.
*/
[hidden] {
  display: none; }

/* MIXIN ETC
    ========================================================================== */
/* Media queries */
/* MODULE
    ========================================================================== */
/* Section */
.section {
  display: block; }

@media screen and (min-width: 769px) {
  .section--popular {
    padding: 56px 0; } }
@media screen and (max-width: 768px) {
  .section--popular {
    padding: 40px 0; } }

.section--info {
  background: #EBEAEB; }
  @media screen and (min-width: 769px) {
    .section--info {
      padding: 32px 0; } }
  @media screen and (max-width: 768px) {
    .section--info {
      padding: 40px 0; } }

/* Text */
a:link, a:visited {
  color: #1A50B7;
  text-decoration: none; }
a:hover, a:focus {
  text-decoration: underline; }

.more-articles {
  text-align: right; }
  @media screen and (min-width: 769px) {
    .more-articles {
      margin-top: 32px; } }
  @media screen and (max-width: 768px) {
    .more-articles {
      margin-top: 24px; } }

@media screen and (max-width: 768px) {
  .more-articles--info {
    margin-top: 16px; } }

/* Title */
.content-header {
  text-align: center; }

.help-title {
  display: inline-block;
  position: relative;
  padding: 0 32px; }
  .help-title:before, .help-title:after {
    content: "";
    position: absolute;
    width: 24px;
    height: 1px;
    top: 50%;
    display: inline-block;
    background: #333; }
  .help-title:before {
    left: 0; }
  .help-title:after {
    right: 0; }
  @media screen and (min-width: 769px) {
    .help-title {
      margin: 0 0 54px;
      font-size: 1.75rem; } }
  @media screen and (max-width: 768px) {
    .help-title {
      margin: 0 0 40px;
      font-size: 1.25rem; } }

.article-title {
  display: inline-block;
  position: relative; }
  @media screen and (min-width: 769px) {
    .article-title {
      margin: 0 0 54px;
      font-size: 1.75rem; } }
  @media screen and (max-width: 768px) {
    .article-title {
      margin: 0 0 40px;
      font-size: 1.25rem; } }

@media screen and (min-width: 769px) {
  .article-title--no-breadcrumbs {
    margin-top: 48px; } }
@media screen and (max-width: 768px) {
  .article-title--no-breadcrumbs {
    margin-top: 40px; } }

.section-title {
  margin: 0 0 32px;
  font-weight: 700; }
  .section-title a {
    color: #333; }
    .section-title a:hover, .section-title a:focus {
      text-decoration: underline; }
  @media screen and (min-width: 769px) {
    .section-title {
      font-size: 1.25rem; } }
  @media screen and (max-width: 768px) {
    .section-title {
      font-size: 1.06rem; } }

@media screen and (max-width: 768px) {
  .section-title--info {
    margin-bottom: 16px; } }

.results-title {
  margin: 0 0 24px;
  font-weight: 400; }
  @media screen and (min-width: 769px) {
    .results-title {
      font-size: 1.56rem; } }
  @media screen and (max-width: 768px) {
    .results-title {
      font-size: 1.25rem; } }

/* LAYOUT
    ========================================================================== */
body {
  font-family: sans-serif;
  line-height: 1.5;
  color: #333; }

html[lang=ja] body {
  font-family: "Noto Sans JP",sans-serif; }

@media screen and (min-width: 1024px) {
  .layout-inner {
    width: 1024px;
    margin-left: auto;
    margin-right: auto; } }
@media screen and (min-width: 769px) and (max-width: 1023px) {
  .layout-inner {
    padding-left: 10px;
    padding-right: 10px; } }
@media screen and (max-width: 768px) {
  .layout-inner {
    padding-left: 24px;
    padding-right: 24px; } }

/* HEADER */
.header {
  width: 100%;
  z-index: 999; }
  .header h1 {
    margin: 0; }

.header-upper {
  background: #fff;
  border-bottom: 1px solid #DDD;
  transition: .5s;
  display: block;
  width: 100%; }
  @media screen and (min-width: 769px) {
    .header-upper {
      padding: 16px 0; } }
  @media screen and (max-width: 768px) {
    .header-upper {
      padding-top: 14px;
      padding-bottom: 14px; } }

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center; }

.logo a {
  display: block;
  background: url("../../image/group_chat_limitations/img_logo.svg") no-repeat center;
  background-size: contain;
  text-indent: 200%;
  overflow: hidden;
  white-space: nowrap; }
@media screen and (min-width: 769px) {
  .logo a {
    width: 260px;
    height: 42px; } }
@media screen and (max-width: 768px) {
  .logo a {
    width: 182px;
    height: 28px; } }

@media screen and (min-width: 769px) {
  .header-parts {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 64%; } }
@media screen and (max-width: 768px) {
  .header-parts {
    display: none; } }

.header-parts__link {
  font-size: .875rem;
  margin-right: 14px; }
  .header-parts__link:link, .header-parts__link:visited {
    color: #333; }

/* Footer */
@media screen and (min-width: 769px) {
  .footer {
    margin-top: 56px; } }
@media screen and (max-width: 768px) {
  .footer {
    margin-top: 40px; } }

.footer__copyright {
  padding: 16px 0;
  background: #021A2B;
  text-align: center; }
  .footer__copyright small {
    color: #fff;
    font-size: 1rem; }

/* PAGE
    ========================================================================== */
/* Article */
@media screen and (min-width: 769px) {
  .article-wrapper {
    margin-top: 55px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start; } }
@media screen and (max-width: 768px) {
  .article-wrapper {
    margin-top: 40px; } }

.article {
  max-width: 640px;
  width: 100%;
  margin: auto; }

.article__body * + p,
.article__body * + img,
.article__body * + div,
.article__body * + ol,
.article__body * + ul,
.article__body * + figure,
.article__body * + table {
  margin-top: 32px; }
.article__body p {
  color: #66737C;
  margin-bottom: 0; }
  .article__body p + img,
  .article__body p + div,
  .article__body p + figure {
    margin-top: 32px; }
  .article__body p + p,
  .article__body p + div,
  .article__body p + ol,
  .article__body p + ul {
    margin-top: 24px; }
.article__body dl {
  margin: 0; }
  .article__body dl dd {
    margin: 1rem 0 0; }
    .article__body dl dd ul {
      margin: 0; }
.article__body .wysiwyg-font-size-large,
.article__body h3 {
  color: #333;
  padding-left: 6px;
  margin-top: 0;
  margin-bottom: 24px;
  border-left: 4px solid #E73A48;
  font-weight: 700; }
.article__body h4 {
  padding-bottom: 16px;
  margin-bottom: 14px;
  font-weight: 700;
  font-size: 1.25rem;
  background: url("Image/img_border.svg") repeat-x bottom left;
  background-size: 14px 1px; }
.article__body * + h3,
.article__body * + h4 {
  margin-top: 50px; }
.article__body .attention {
  padding: 20px;
  color: #66737C;
  background: #F2F2F2;
  border: 1px dashed #66737C; }
  .article__body .attention p:first-of-type {
    margin-top: 0; }
.article__body p + .attention,
.article__body img + .attention {
  margin-top: 32px; }
.article__body ul li,
.article__body ol li {
  color: #66737C; }
  .article__body ul li + li,
  .article__body ol li + li {
    margin-top: 1rem; }
.article__body table {
  border-collapse: collapse;
  font-size: .875rem;
  width: 100%; }
  .article__body table th,
  .article__body table td {
    text-align: center; }
  .article__body table th {
    background: #A5A5A5;
    border: 1px solid #fff;
    color: #fff; }
  .article__body table td {
    border: 1px solid #E1E3E6;
    color: #66737C; }
  .article__body table + p {
    margin-top: 16px; }
@media screen and (min-width: 769px) {
  .article__body .wysiwyg-font-size-large,
  .article__body h3 {
    font-size: 1.4375rem; }
  .article__body table th {
    padding: 12px 8px; }
  .article__body table td {
    padding: 40px 8px; } }
@media screen and (max-width: 768px) {
  .article__body .wysiwyg-font-size-large,
  .article__body h3 {
    font-size: 1.06rem; }
  .article__body table th {
    padding: 8px; }
  .article__body table td {
    padding: 20px 4px; } }
.article__body .text-red {
  color: #E73A48; }