@charset "UTF-8";
*,
*::before,
*::after {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

/* Remove default padding */
ul,
ol {
  padding: 0;
}

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* Set core root defaults */
html {
  scroll-behavior: smooth;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* Remove list styles on ul, ol elements with a class attribute */
ul,
ol {
  list-style: none;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img {
  max-width: 100%;
  display: block;
  width: 100%;
}

/* Natural flow and rhythm in articles by default */
article > * + * {
  margin-top: 1em;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
  font: inherit;
}

/* Blur images when they have no alt attribute */
img:not([alt]) {
  filter: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg"><filter id="filter"><feGaussianBlur stdDeviation="10" /></filter></svg>#filter');
  -webkit-filter: blur(10px);
          filter: blur(10px);
}

/* フォームリセット */
input,
button,
select,
textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent;
  border: none;
  border-radius: 0;
  font: inherit;
  outline: none;
}

textarea {
  resize: vertical;
}

input[type=checkbox],
input[type=radio] {
  display: none;
}

input[type=submit],
input[type=button],
label,
button,
select {
  cursor: pointer;
}

select::-ms-expand {
  display: none;
}

:root {
  --color-bg: #f3f2f2;
  --color-text: #201e1d;
  --color-white: #fff;
  --color-accent: #0088b0;
  --color-accent-100: #e9f8ff;
  --color-accent-200: #cbeeff;
  --color-accent-300: #99e0ff;
  --color-accent-700: #006786;
  --color-accent-800: #004961;
  --color-accent-900: #0a303e;
  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
}

body {
  color: #201e1d;
  background-color: #f3f2f2;
  font-family: "Source Serif 4", "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 400;
}

@media only screen and (min-width: 768px) {
  .sp {
    display: none !important;
  }
}
@media only screen and (max-width: 767px) {
  .pc {
    display: none !important;
  }
}
/* リキッドレイアウト対応 */
html {
  font-size: 16px;
  scroll-padding-top: 6.875rem;
}
@media (max-width: 375px) {
  html {
    font-size: 4.2666666667vw;
  }
}

/* pcの電話番号発信対応 */
@media screen and (max-width: 767px) {
  a[href^="tel:"] {
    pointer-events: none;
  }
}

body {
  font-size: 20px;
  font-size: 1.25rem;
  line-height: 1.75;
  text-wrap: pretty;
}

a {
  color: #006786;
  text-underline-offset: 4px;
  text-underline-offset: 0.25rem;
  -webkit-text-decoration-color: #99e0ff;
          text-decoration-color: #99e0ff;
}
a:hover {
  color: #0a303e;
}

img {
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

:focus-visible {
  outline: 2px solid #0088b0;
  outline-offset: 2px;
}

/* iPhone / Android の出し分け
   JSが html に data-os="iphone|android" を設定し、
   body内の data-os 付き要素は一致するものだけ表示する
   （htmlタグ自身の data-os にマッチしないよう body でスコープする） */
body [data-os] {
  display: none;
}

html[data-os=iphone] body [data-os=iphone],
html[data-os=android] body [data-os=android] {
  display: block;
}

/* 視差効果を減らす設定のユーザーにはアニメーションを最小化する */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    -webkit-animation-duration: 0.01ms !important;
            animation-duration: 0.01ms !important;
    -webkit-transition-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
.footer {
  margin-top: 40px;
  margin-top: 2.5rem;
  padding-bottom: 40px;
  padding-bottom: 2.5rem;
}
@media screen and (max-width: 767px) {
  .footer {
    padding-bottom: 6rem;
  }
}

.footer__body {
  padding-top: 20px;
  padding-top: 1.25rem;
  border-top: 1px solid #201e1d;
  font-size: 16px;
  font-size: 1rem;
  color: #605d5d;
}

.inner {
  width: 100%;
  max-width: 640px;
  max-width: 40rem;
  padding-right: 20px;
  padding-left: 20px;
  margin-right: auto;
  margin-left: auto;
}

.masthead {
  padding-top: 30px;
  padding-top: 1.875rem;
}

.masthead__dateline {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  gap: 15px;
  gap: 0.9375rem;
  font-size: 15px;
  font-size: 0.9375rem;
  color: #605d5d;
  padding-bottom: 10px;
  padding-bottom: 0.625rem;
  border-bottom: 3px solid #201e1d;
  position: relative;
}
.masthead__dateline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  border-top: 1px solid #201e1d;
}

.masthead__title {
  margin-top: 30px;
  margin-top: 1.875rem;
  font-size: 42px;
  font-size: 2.625rem;
  font-weight: 600;
  line-height: 1.25;
}

.masthead__lead {
  margin-top: 15px;
  margin-top: 0.9375rem;
  color: #444141;
}

.os-switch {
  position: sticky;
  top: 0;
  z-index: 5;
  margin-top: 20px;
  margin-top: 1.25rem;
  padding: 15px 0;
  padding: 0.9375rem 0;
  background-color: #f3f2f2;
}

.os-switch__buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  gap: 0.625rem;
}

.os-switch__btn {
  min-height: 56px;
  min-height: 3.5rem;
  font-size: 22px;
  font-size: 1.375rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 0.125rem;
  border: 2px solid #006786;
  color: #006786;
}
.os-switch__btn:hover {
  background-color: #e9f8ff;
}
.os-switch__btn[aria-pressed=true] {
  background-color: #006786;
  color: #f3f2f2;
}
.os-switch__btn[aria-pressed=true]:hover {
  background-color: #004961;
}

.os-switch__hint {
  margin-top: 10px;
  margin-top: 0.625rem;
  font-size: 16px;
  font-size: 1rem;
  color: #605d5d;
}

.pagetop {
  display: none;
}
@media screen and (max-width: 767px) {
  .pagetop {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 10;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    width: 3.5rem;
    aspect-ratio: 1;
    border-radius: 50%;
    background-color: #006786;
    color: #f3f2f2;
    text-decoration: none;
    line-height: 1;
    -webkit-box-shadow: 0 0.125rem 0.5rem rgba(32, 30, 29, .25);
            box-shadow: 0 0.125rem 0.5rem rgba(32, 30, 29, .25);
    opacity: 0;
    visibility: hidden;
    -webkit-transition: opacity 0.3s, visibility 0.3s;
    transition: opacity 0.3s, visibility 0.3s;
  }
  .pagetop.is-show {
    opacity: 1;
    visibility: visible;
  }
  .pagetop:hover {
    color: #f3f2f2;
    background-color: #004961;
  }
}

.pagetop__arrow {
  font-size: 20px;
  font-size: 1.25rem;
  font-weight: 600;
}

.pagetop__text {
  margin-top: 2px;
  margin-top: 0.125rem;
  font-size: 12px;
  font-size: 0.75rem;
}

.toc {
  margin-top: 30px;
  margin-top: 1.875rem;
}

.toc__title {
  font-size: 16px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #006786;
}

.toc__list {
  margin-top: 15px;
  margin-top: 0.9375rem;
  display: grid;
  gap: 10px;
  gap: 0.625rem;
}

.toc__item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 15px;
  gap: 0.9375rem;
  -webkit-box-align: baseline;
      -ms-flex-align: baseline;
          align-items: baseline;
}

.toc__num {
  -webkit-font-feature-settings: "tnum";
          font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  color: #7d7979;
  min-width: 1.6em;
}

.topic {
  margin-top: 40px;
  margin-top: 2.5rem;
  padding-top: 20px;
  padding-top: 1.25rem;
}

.topic__num {
  font-size: 52px;
  font-size: 3.25rem;
  line-height: 1;
  color: #0088b0;
  font-weight: 600;
  -webkit-font-feature-settings: "tnum";
          font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.topic__title {
  margin-top: 10px;
  margin-top: 0.625rem;
  font-size: 32px;
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.3;
}

.topic__body {
  margin-top: 20px;
  margin-top: 1.25rem;
}

html[data-os=iphone] .topic__variant[data-os=iphone],
html[data-os=android] .topic__variant[data-os=android] {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.topic__variant {
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  gap: 20px 30px;
  gap: 1.25rem 1.875rem;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
}

.topic__fig {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 auto;
          flex: 0 0 auto;
  width: 128px;
  width: 8rem;
}
@media screen and (max-width: 767px) {
  .topic__fig {
    margin-left: 2rem;
  }
}

.topic__fig-svg {
  display: block;
  width: 128px;
  width: 8rem;
  height: 214px;
  height: 13.375rem;
  overflow: visible;
}

.topic__fig-caption {
  margin-top: 10px;
  margin-top: 0.625rem;
  font-size: 14px;
  font-size: 0.875rem;
  color: #605d5d;
  line-height: 1.5;
}

.topic__steps {
  -webkit-box-flex: 1;
      -ms-flex: 1 1 260px;
          flex: 1 1 260px;
  -ms-flex: 1 1 16.25rem;
      flex: 1 1 16.25rem;
  display: grid;
  gap: 15px;
  gap: 0.9375rem;
}

.topic__step {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 15px;
  gap: 0.9375rem;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
}

.topic__step-num {
  -webkit-box-flex: 0;
      -ms-flex: none;
          flex: none;
  min-width: 1.5em;
  font-size: 23px;
  font-size: 1.4375rem;
  font-weight: 600;
  color: #006786;
  -webkit-font-feature-settings: "tnum";
          font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.topic__note {
  margin-top: 20px;
  margin-top: 1.25rem;
  padding-left: 20px;
  padding-left: 1.25rem;
  font-size: 18px;
  font-size: 1.125rem;
  color: #444141;
  font-style: italic;
}

.topic__back {
  margin-top: 20px;
  margin-top: 1.25rem;
  font-size: 16px;
  font-size: 1rem;
}
/*# sourceMappingURL=styles.css.map */