:root {
  --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
    "Nimbus Sans L", Roboto, Noto, "Segoe UI", Arial, Helvetica,
    "Helvetica Neue", sans-serif;
  --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;

  /* Default theme */
  --bg: #fff;
  --accent-bg: #f5f7ff;
  --text: #212121;
  --text-light: #585858;
  --border: #d8dae1;
  --accent: #0d47a1;
  --code: #d81b60;
  --preformatted: #444;
  --marked: #ffdd33;
  --disabled: #efefef;
  --nav: #dcdcdc;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #212121;
    --accent-bg: #2b2b2b;
    --text: #dcdcdc;
    --text-light: #ababab;
    --border: #666;
    --accent: #ffb300;
    --code: #f06292;
    --preformatted: #ccc;
    --disabled: #111;
    --nav: #dcdcdc;
  }
  img,
  video {
    opacity: 0.8;
  }
}

html {
  font-family: var(--sans-font);
  scroll-behavior: smooth;
}

body {
  color: var(--text);
  background: var(--bg);
  font-size: 1.15rem;
  line-height: 1.5;
  display: grid;
  grid-template-columns: 1fr min(80rem, 90%) 1fr;
  margin: 0;
}

body > * {
  grid-column: 2;
}

body > header {
  background: var(--accent-bg);
  border-bottom: 1px solid var(--border);
  text-align: center;
  padding: 0 0.5rem 2rem 0.5rem;
  grid-column: 1 / -1;
  box-sizing: border-box;
}

body > header h1 {
  max-width: 1200px;
  margin: 1rem auto;
}

body > header p {
  max-width: 40rem;
  margin: 1rem auto;
}

main {
  padding-top: 1.5rem;
}

body > footer {
  margin-top: 4rem;
  padding: 2rem 1rem 1.5rem 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.6rem;
  margin-top: 3rem;
}

h3 {
  font-size: 2rem;
  margin-top: 3rem;
}

h4 {
  font-size: 1.44rem;
}

h5 {
  font-size: 1.15rem;
}

h6 {
  font-size: 0.96rem;
}

h1,
h2,
h3 {
  line-height: 1.1;
}

p {
  margin-bottom: 1.5rem;
}

.center {
  text-align: center;
}

.flex {
  display: flex;
}

@media only screen and (max-width: 720px) {
  body > header {
    border-bottom: none;
    padding: 0;
    margin-bottom: 2rem;
  }
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2.1rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  h4 {
    font-size: 1.25rem;
  }

  .title {
    padding-top: 2rem;
  }
  .flex {
    flex-direction: column;
  }
}

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

a:hover {
  text-decoration: none;
}

button,
[role="button"],
input[type="submit"],
input[type="reset"],
input[type="button"] {
  border: none;
  border-radius: 5px;
  background: var(--accent);
  font-size: 1rem;
  color: var(--bg);
  padding: 0.7rem 0.9rem;
  margin: 0.5rem 0;
}

button[disabled],
[role="button"][aria-disabled="true"],
input[type="submit"][disabled],
input[type="reset"][disabled],
input[type="button"][disabled],
input[type="checkbox"][disabled],
input[type="radio"][disabled],
select[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

input:disabled,
textarea:disabled,
select:disabled {
  cursor: not-allowed;
  background-color: var(--disabled);
}

input[type="range"] {
  padding: 0;
}

abbr {
  cursor: help;
}

button:focus,
button:enabled:hover,
[role="button"]:focus,
[role="button"]:not([aria-disabled="true"]):hover,
input[type="submit"]:focus,
input[type="submit"]:enabled:hover,
input[type="reset"]:focus,
input[type="reset"]:enabled:hover,
input[type="button"]:focus,
input[type="button"]:enabled:hover {
  filter: brightness(1.4);
  cursor: pointer;
}

header > nav {
  font-size: 1rem;
  line-height: 2;
  padding: 1rem 0 0 0;
}

header > nav ul,
header > nav ol {
  align-content: space-around;
  align-items: center;
  display: flex;
  flex-direction: row;
  justify-content: center;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

header > nav ul li,
header > nav ol li {
  display: inline-block;
}

header > nav a,
header > nav a:visited {
  margin: 0 1rem 1rem 0;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  display: inline-block;
  padding: 0.1rem 1rem;
  text-decoration: none;
}

header > nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

header > nav a:last-child {
  margin-right: 0;
}
#navbtn {
  display: none;
}

@media only screen and (max-width: 720px) {
  html,
  body {
    overflow-x: hidden;
  }
  header > nav ul,
  header > nav ol {
    flex-direction: column;
  }
  header > nav a {
    display: block;
    border: none;
    padding: 0;
    color: var(--accent);
    text-decoration: underline;
    line-height: 1;
  }
  header > nav a,
  header > nav a:visited {
    display: block;
    margin: 1.5rem 0;
    color: var(--nav);
    text-decoration: none;
    font-weight: 500;
  }
  .nav {
    position: fixed;
    top: 0;
    left: 100%;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    color: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: left 0.5s;
  }

  /* ナビゲーションボタン（開く） */
  #navbtn {
    display: block;
    position: fixed;
    top: 15px;
    right: 15px;
    padding: 0;
    outline: none;
    border: none;
    background: none;
    width: 30px;
    height: 20px;
    cursor: pointer;
  }

  #navbtn::before,
  #navbtn::after {
    content: "";
    display: block;
    height: 1px;
    background-color: var(--preformatted);
    transform: translateY(10px);
    transition: 0.3s ease-in-out;
  }

  #navbtn::before {
    transform: translateY(-10px);
    box-shadow: 0 10px var(--preformatted);
  }

  /* ナビゲーションボタン（閉じる） */
  .open #navbtn {
    z-index: 100;
  }
  .open #navbtn::before {
    transform: rotate(-45deg);
    box-shadow: none;
  }
  .open #navbtn::after {
    transform: rotate(45deg);
    box-shadow: none;
  }
  /* ナビゲーションメニュー 開いた時*/
  .open .nav {
    left: 0;
  }
}

aside {
  width: 30%;
  padding: 0 15px;
  margin-left: 15px;
  float: right;
  background: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
}

article {
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 5px;
}

article h2:first-child,
section h2:first-child {
  margin-top: 1rem;
}

section {
  border-top: 1px solid var(--border);
  padding: 2rem 1rem;
  margin: 3rem 0;
}

details {
  background: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  margin-bottom: 1rem;
}

summary {
  cursor: pointer;
  font-weight: bold;
  padding: 0.6rem 1rem;
}

details[open] {
  padding: 0.6rem 1rem 0.75rem 1rem;
}

details[open] summary + * {
  margin-top: 0;
}

details[open] summary {
  margin-bottom: 0.5rem;
  padding: 0;
}

details[open] > *:last-child {
  margin-bottom: 0;
}

.cc-table {
  border-collapse: collapse;
  overflow: visible;
  width: 100%;
  margin: 1.5rem 0;
  width: 100%;
}

.cc-table td,
.cc-table th {
  border: 1px solid var(--border);
  text-align: left;
  padding: 0.5rem;
}

.cc-table th {
  font-weight: bold;
}

.cc-table tr:nth-child(odd) {
  color: #2b2b2b;
}

.cc-table tr:nth-child(even) {
  background: var(--accent-bg);
}

.pacing {
  border-collapse: collapse;
}

.pacing td {
  padding: 1rem;
}

.pacing td:nth-child(2),
.pacing td:nth-child(3) {
  width: max-content;
  padding: 1 0.5em;
}

@media only screen and (max-width: 720px) {
  .cc-table {
    width: 100%;
  }

  .cc-table th,
  .cc-table td {
    display: block;
  }

  .cc-table th {
    background: var(--border);
    color: var(--text);
    font-weight: bold;
    text-align: center;
  }
  .cc-table td:before,
  .pacing td:before {
    content: attr(data-label);
    width: fit-content;
    padding: 0 0.5rem;
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--accent-bg);
    background-color: var(--preformatted);
    border-radius: 6px;
    display: block;
  }
  .cc-table tr:last-child {
    border-bottom: solid 1px var(--border);
  }
  .cc-table ul {
    margin-top: 2rem;
    padding-left: 1rem;
  }

  .pacing {
    width: 100%;
  }

  .pacing tr {
    display: block;
    margin-bottom: 2rem;
  }

  .pacing tr td {
    width: inherit;
  }

  .pacing td:first-child {
    text-align: center;
  }

  .pacing td:nth-child(2),
  .pacing td:nth-child(3) {
    width: inherit;
  }

  .thead {
    display: none !important;
  }
}

textarea,
select,
input {
  font-size: inherit;
  font-family: inherit;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: none;
  box-sizing: border-box;
  width: 60%;
  -moz-appearance: none;
  -webkit-appearance: none;
  appearance: none;
}

select {
  background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
    linear-gradient(135deg, var(--text) 51%, transparent 49%);
  background-position: calc(100% - 20px), calc(100% - 15px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

select[multiple] {
  background-image: none !important;
}

input[type="checkbox"],
input[type="radio"] {
  vertical-align: bottom;
  position: relative;
}

input[type="radio"] {
  border-radius: 100%;
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
  background: var(--accent);
}

input[type="checkbox"]:checked::after {
  content: " ";
  width: 0.1em;
  height: 0.25em;
  border-radius: 0;
  position: absolute;
  top: 0.05em;
  left: 0.18em;
  background: transparent;
  border-right: solid var(--bg) 0.08em;
  border-bottom: solid var(--bg) 0.08em;
  font-size: 1.8em;
  transform: rotate(45deg);
}
input[type="radio"]:checked::after {
  content: " ";
  width: 0.25em;
  height: 0.25em;
  border-radius: 100%;
  position: absolute;
  top: 0.125em;
  background: var(--bg);
  left: 0.125em;
  font-size: 32px;
}

textarea {
  width: 80%;
}

@media only screen and (max-width: 720px) {
  textarea,
  select,
  input {
    width: 100%;
  }
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
}

input[type="file"] {
  border: 0;
}

hr {
  color: var(--border);
  border-top: 1px;
  margin: 1rem auto;
}

mark {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--marked);
}

main img,
main video {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}

figure {
  margin: 0;
  text-align: center;
}

figcaption {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

blockquote {
  margin: 2rem 0 2rem 2rem;
  padding: 0.4rem 0.8rem;
  border-left: 0.35rem solid var(--accent);
  color: var(--text-light);
  font-style: italic;
}

cite {
  font-size: 0.9rem;
  color: var(--text-light);
  font-style: normal;
}

code,
pre,
pre span,
kbd,
samp {
  font-family: var(--mono-font);
  color: var(--code);
}

kbd {
  color: var(--preformatted);
  border: 1px solid var(--preformatted);
  border-bottom: 3px solid var(--preformatted);
  border-radius: 5px;
  padding: 0.1rem 0.4rem;
}

pre {
  padding: 1rem 1.4rem;
  max-width: 100%;
  overflow: auto;
  color: var(--preformatted);
  background: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
}

pre code {
  color: var(--preformatted);
  background: none;
  margin: 0;
  padding: 0;
}

#pagetop {
  position: fixed;
  bottom: 20px;
  right: 0;
  padding: 20px;
  color: #fff;
  background: #00c2bc;
  text-decoration: none;
}

#explanation h1 {
  text-align: center;
}

#explanation li {
  display: inline-block;
  margin: 0.5rem;
}

#explanation li a {
  padding: 0.25rem;
  background-color: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
}

#explanation li a:hover {
  border-color: var(--accent);
}

#stat section {
  overflow-x: scroll;
}

.stat table,
.pacing table {
  display: block;
  border-collapse: collapse;
  width: max-content;
  table-layout: fixed;
  overflow-x: scroll;
  color: #2b2b2b;
}

.stat td,
.pacing td {
  border: 1px solid var(--border);
  width: 6em;
}

.stat th:first-child,
.stat td:first-child,
.pacing td:first-child {
  font-weight: bold;
}

.red {
  color: var(--code);
}

.blue {
  color: var(--accent);
}

/* SNS shear */
.shareList {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  width: 100%;
  margin: 1rem 0;
  padding: 0;
}

.shareList__item {
  text-align: center;
}

.shareList__link {
  display: block;
  text-decoration: none;
}
.shareList__link::before {
  transition: ease-in-out 0.2s;
  border-radius: 5px;
}
.shareList__link::after {
  content: attr(title);
  vertical-align: top;
}
.shareList__link:hover {
  opacity: 0.75;
}

.shareList__link.icon-twitter {
  content: url(/img/twitter.svg);
}
.shareList__link.icon-facebook {
  content: url(/img/facebook.svg);
}
.shareList__link.icon-line {
  content: url(/img/line.svg);
}

.selfcare img,
.banner img {
  width: 30%;
}

.pages table {
  color: #2b2b2b;
}

.banner {
  text-align: center;
}

/* スクロールボタン */
#pagetop {
  position: fixed;
  bottom: 20px;
  right: 0;
  padding: 20px;
  color: #fff;
  background: #00c2bc;
  text-decoration: none;
}

audio {
  width: 50vw;
}

.point {
  position: relative;
  padding: 1rem;
  border-radius: 0 10px 10px 10px;
  background: var(--accent-bg);
}

.point:before {
  position: absolute;
  top: -24px;
  left: 0;
  height: 24px;
  padding: 0 0.5rem;
  content: "イチオシ！";
  font-size: 1rem;
  color: #fff;
  border-radius: 10px 10px 0 0;
  background: var(--accent);
}

@media only screen and (max-width: 720px) {
  audio {
    width: 100%;
  }

  .selfcare img,
  .banner img {
    width: 100%;
  }

  .cflist h2 {
    font-size: 0.9rem;
  }

  .pacing th,
  .pacing td {
    display: block;
    width: 90%;
    margin: 0 auto;
  }

  .cflist {
    width: 80%;
    margin: 3em auto;
  }

  .cflist h2 {
    font-size: 1.25rem;
  }

  .cflist {
    width: 90%;
  }

  .cflist h2 {
    font-size: 1rem;
  }
}