@charset "utf-8";

html {
  text-autospace: normal;
  text-spacing-trim: trim-start;
  line-break: strict;
  hyphens: auto;
  overflow-wrap: anywhere;
  text-underline-offset: 0.15em;
  font-family: sans-serif;
  font-size: 1.25em;
  font-size: max(
    1rem,
    /* clamp(20px, calc(18.67px + 0.33vw), 24px) */
    clamp(18px, calc(16.5px + 0.375vw), 24px)
  );
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-size: 1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  display: grid;
  grid-auto-columns: 100%;
  grid-template-rows: auto 1fr auto;
  margin: 0;
}

body > header {
  margin-bottom: 0.8em;
}

h1,
h2,
h3,
nav {
  text-wrap: pretty;
  font-feature-settings: "palt" 1;
}

h2 {
  margin-top: 4rem;
  font-size: 1.375rem;
}

h3 {
  margin-block-start: 3rem;
  font-size: 1.125rem;
}

h4 {
  font-weight: 600;
}

header > nav {
  font-size: 1.1rem;
  font-family: serif;
  box-sizing: border-box;
  border-bottom: 3px solid #555;
  padding-bottom: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  gap: 1em;
  align-items: center;
  justify-content: center;
}

header > nav a {
  position: relative;
}

footer > nav {
  text-align: center;
  margin-top: 0.8em;
  margin-bottom: 0.8em;
}


header > h1 {
  margin-block: 0.67rem;
  font-size: 2rem;
}

header > time {
  font-size: 0.9rem;
}

article, main.blog {
  width: 100%;
  max-width: 40em;
  max-width: 40rem;
  justify-self: center;
  margin-left: 0;
  margin-right: 0;
  box-sizing: border-box;
  min-width: 0;
  padding: 0 1em;
}

@supports (display: grid) {
  article, main.blog {
    padding: 0;
  }
}

article > dl > dd:has(+ dt) {
  margin-bottom: 0.5rem;
}

article p + p {
  margin-block-start: 0.75rlh;
}

nav#toc {
  margin-block: 1.5rem 2rem;
  font-size: 0.9rem;
  line-height: 1.7rem;
  font-family: sans-serif;
}

/* ルートulと入れ子ulの共通 */
nav#toc ul.toc {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

/* 入れ子（= H3側）の見た目 */
nav#toc ul.toc ul.toc {
  padding-left: 1rem;
  margin-top: 0.3rem;
  border-left: 1px dotted currentColor;
}

/* リンク */
nav#toc a {
  text-decoration: none;
}

/* 各項目の余白 */
nav#toc li {
  padding-block-end: 0.2rlh;
}

blockquote {
  margin: 0;
  margin-block-start: 1rlh;
  margin-block-end: 1rlh;
}

blockquote div {
  padding: 1rem;
  border-radius: 0.6rem;
}

blockquote :first-child {
  margin-top: 0;
}

blockquote :last-child {
  margin-bottom: 0;
}

blockquote p::before {
  content: "\201C";
}

blockquote p::after {
  content: "\201D";
}

code {
  border-radius: 0.3rem;
  padding: 0.1rem 0.3rem;
  margin: 0 0.1rem;
}

pre code {
  margin: 0;
  border-radius: 0.6rem;
  padding: 1rem;
  display: block;
  overflow-x: auto;
}

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

hr {
  width: 100%;
}

ul:has(a) {
  display: grid;
  gap: 0.2rem;
}

.center {
  text-align: center;
  margin-top: 1em;
}

.banner {
  --banner-width: 300px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--banner-width), 1fr));
  max-width: 100dvw;
  gap: 0.5rem;
  place-items: center;
}

.banner > a {
  width: min(100%, var(--banner-width));
  height: auto;
}

/* メディアクエリ */
@media (min-width: 95rem) {
  @supports (display: flex) {
    header > nav.blog {
      position: fixed;
      top: 1em;
      padding-right: 1.5rem;
      width: 9em;
      width: 10rem;
      overflow: auto;
      justify-content: left;
      margin-block: 1.5rem 2rem;
    }

    article:has(#toc) {
      margin-right: 3em;
      margin-right: 3rem;
    }

    nav#toc {
      position: fixed;
      top: 0;
      right: 0em;
      right: 0.5rem;
      padding-left: 1.5rem;
      width: 12rem;
      width: clamp(12rem, 16vw, 18rem);
      overflow: auto;
      margin-top: 2.2rem;
    }
  }
}
@media (min-width: 95rem) {
  @supports (width: clamp(12rem, 16vw, 18rem)) {
    body {
      grid-auto-columns: initial;
      grid-template-columns: 0rem minmax(0, 1fr);
      grid-template-rows: 1fr auto;
      column-gap: 0;
      justify-content: center;
      align-items: start;
      margin-top: 1rem;
    }

    body > header {
      display: contents;
    }

    header > nav.blog {
      grid-column: 1;
      grid-row: 1;
      position: static;
      align-self: start;
      width: 10rem;
      margin: 0;
      overflow: auto;
      max-height: calc(100dvh - 2em);
      justify-content: flex-start;
      flex-wrap: nowrap;
      flex-direction: column;
      gap: 1.8rem;
      align-items: flex-start;
      margin-top: 1.5rem;
    }

    main.blog {
      grid-column: 2;
      grid-row: 1;
      justify-self: stretch;
      width: 100%;
      min-width: 0;
      display: grid;
      grid-template-columns: minmax(0, 40rem);
      justify-content: center;
      column-gap: 3rem;
      align-items: start;
      max-width: none;
      padding: 0;
    }

    main.blog:has(nav#toc) {
      grid-template-columns: minmax(0, 40rem) clamp(12rem, 16vw, 18rem);
    }

    main.blog > article {
      display: contents;
    }

    main.blog > article > header {
      display: contents;
    }

    main.blog > article > :not(header) {
      grid-column: 1;
      min-width: 0;
    }

    main.blog > article > header > :not(nav#toc) {
      grid-column: 1;
      min-width: 0;
    }

    main.blog nav#toc {
      grid-column: 2;
      position: sticky;
      top: 1em;
      right: auto;
      left: auto;
      width: auto;
      margin: 0;
      padding-left: 1.5rem;
      overflow: auto;
      max-height: calc(100dvh - 2em);
      min-width: 0;
    }

    body > footer {
      grid-column: 1 / -1;
      grid-row: 2;
    }
  }
}

@media (max-width: 40em) {
  body {
    padding-left: 1.2em;
    padding-right: 1.2rem;
  }
}

@media (max-width: 40rem) {
  body {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }
}

@media print {
  a {
    color: #000;
  }

  header > nav {
    display: none;
  }

  body {
    display: block;
    min-height: auto;
    font-size: 12pt;
  }

  h1,
  h2,
  h3,
  h4 {
    break-after: avoid-page;
  }

  pre,
  pre code {
    white-space: pre-wrap;
    word-break: break-all;
    overflow-wrap: anywhere;
    break-inside: avoid;
  }

  blockquote div {
    border-style: solid;
    border-width: 0.2em;
  }

  code {
    border-style: solid;
    border-width: 0.2em;
  }
}

/* サポート */

@supports (font-size: clamp(1rem, 2vw, 2rem)) {
  header > nav {
  --nav-gap: clamp(0.8rem, 6vw, 2.5rem);
  gap: var(--nav-gap);
}


}

/* 色 */
@media screen {
  /* light (default) */
  body {
    background-color: #fdfffe;
    color: #1b382d;
  }

  article {
    color: #1b382d;
  }

  a {
    background-image: linear-gradient(90deg, #70f3c4, #70f3c4);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    background-position: left bottom;
    transition:
      color 180ms ease,
      background-size 220ms cubic-bezier(0.08, 0.82, 0.17, 1);
    text-decoration-thickness: 0.08rem;
  }

  a:link {
    color: #003261;
  }

  a:visited {
    color: #550055;
  }

  a:focus,
  a:hover {
    color: #001009;
    background-size: 100% 100%;
  }

  blockquote div {
    color: #1b382d;
    border-color: #171b1a;
    background: #ecf2ef;
  }

  code {
    border-color: #389982;
    color: #1b382d;
    background-color: #e9f0ec;
  }

  pre code {
    border-color: #171b1a;
    color: #2d3330;
    background-color: #f6f6f6;
  }
}

/* dark */
@media screen and (prefers-color-scheme: dark) {
  body {
    background-color: #0a110e;
    color: #caecdd;
  }

  article {
    color: #caecdd;
  }

  a {
    background-image: linear-gradient(90deg, #1a7840, #1a7840);
  }

  a:link {
    color: #b2cff1;
  }

  a:visited {
    color: #e7c6e5;
  }

  a:focus,
  a:hover {
    color: #f0f0f0;
  }

  blockquote div {
    color: #caecdd;
    border-color: #eeeeee;
    background: #002d1f;
  }

  code {
    border-color: #024f39;
    color: #caecdd;
    background-color: #002d1f;
  }

  pre code {
    border-color: #eeeeee;
    color: #caecdd;
    background-color: #0d0d0d;
  }
}