/* ============================ */
/* 	reset
/* ============================ */

body, p, dl, dt, dd, h1, h2, h3, h4, h5, h6, menu, ul, ol, li, figure, figcaption, form {
  margin: 0;
  padding: 0;
}

em {
  font-style: normal;
}

table {
  /*width: 100%;*/
  border-collapse: collapse;
  border-spacing: 0;
}

body * {
  box-sizing: border-box;
}


/* ============================ */
/* 	base
/* ============================ */

:root {
  --baseColor: #3c3c43;
  --subColor: #3a5ccc;
  --whiteColor: #fefefe;
  --bgColor: #fefefe;
  --grayColor: #eee;
  --errorClor: #d5393e;
}

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--baseColor) var(--bgColor);
  scrollbar-width: thin;
}

body {
  color: var(--baseColor);
  font-size: 1rem;
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  line-height: 1.8;
  background-color: var(--bgColor);
  position: relative;
}

img,
picture * {
  font-style: italic;
  vertical-align: middle;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6, strong, b {
  font-weight: bold;
}

::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}

::-webkit-scrollbar-track {
  background-color: var(--grayColor);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background-color: var(--baseColor);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  opacity: 0.85;
}


/* ============================ */
/* 	link
/* ============================ */

a {
  text-decoration: none;
  transition: all 0.3s;
}

a:link, a:visited {
  color: var(--subColor);
  border-bottom: 1px solid var(--subColor);
}

a:hover, a:active {
  color: var(--baseColor);
  border-bottom-color: transparent;
}

a:hover img {
  opacity: 0.85;
}


/* ============================ */
/* 	contents
/* ============================ */

.wrapper {
  margin: 3rem auto;
  width: min(90%, 700px);
}

.header {
  margin-bottom: 2em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--grayColor);
}

.footer {
  margin-top: 2em;
  padding-top: 1.5em;
  border-top: 1px solid var(--grayColor);
}

.footer p {
  text-align: center;
}

.back {
  margin-bottom: 2em;
  font-size: 0.9em;
}

h1 {
  margin-bottom: 1em;
  font-size: 1.75em;
}

h2 {
  margin: 2.5em 0 1em;
  font-size: 1.35em;
}

h3 {
  margin: 2em 0 1em;
  font-size: 1.1em;
}

.main > *:not(h2):not(h3) {
  margin-bottom: 1.5em;
}

hr {
  margin: 1.75em 0;
  border: none;
  border-bottom: 1px solid var(--grayColor);
  position: relative;
}

code {
  padding: 0 0.5em;
  background-color: var(--grayColor);
  border-radius: 5px;
}

pre {
  margin: 0;
  padding: 0.5em;
  background-color: var(--grayColor);
  border-radius: 5px;
  width: 100%;
}

pre > code {
  padding: 0;
  background-color: transparent;
  border-radius: 0;
  overflow-x: auto;
  display: block;
}

ul,
ol {
  margin-left: 1.5em;
}

.box_aside {
  padding: 1em;
  font-size: 0.9em;
  background-color: var(--grayColor);
  border-radius: 5px;
  width: 100%;
}


/* ============================ */
/* 	@media SP
/* ============================ */

@media screen and (max-width: 799px) {
  .pc {
    display: none;
  }
}


/* ============================ */
/* 	@media PC
/* ============================ */

@media screen and (min-width: 800px) {
  .sp {
    display: none;
  }
}