:root {
  color-scheme: dark;
  --bg: #050506;
  --surface: #0b0c0e;
  --ink: #f4f5f6;
  --ink2: #c6cbd0;
  --ink3: #8c939b;
  --hair: #32363b;
  --accent: #c9a96a;
  --accent-soft: #c9a96a12;
  --serif:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    "Noto Serif JP",
    Georgia,
    serif;
  --sans:
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    "Noto Sans JP",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
}
html[data-theme=light] {
  color-scheme: light;
  --bg: #fafbfc;
  --surface: #ffffff;
  --ink: #15171a;
  --ink2: #3c434a;
  --ink3: #6a727b;
  --hair: #e0e4e8;
  --accent: #c0402a;
  --accent-soft: #c0402a0a;
}
* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 32px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 300 15px/1.9 var(--sans);
  -webkit-font-smoothing: antialiased;
}
html[lang=en] body {
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    Arial,
    var(--sans);
}
button,
input {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
a {
  color: inherit;
  text-underline-offset: 5px;
}
button {
  color: inherit;
}
img {
  max-width: 100%;
  height: auto;
}
button,
summary {
  cursor: pointer;
}
::selection {
  background: var(--ink);
  color: var(--bg);
}
:focus-visible {
  outline: 2px solid var(--ink2);
  outline-offset: 6px;
}
.on-paper {
  display: none !important;
}
html[data-theme=light] .on-paper {
  display: block !important;
}
html[data-theme=light] .on-ink {
  display: none !important;
}
.skip-link {
  position: absolute;
  top: -80px;
  left: 20px;
  z-index: 10;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--bg);
}
.skip-link:focus {
  top: 12px;
}
.top {
  position: relative;
  z-index: 2;
  max-width: 1248px;
  margin: auto;
  padding: 28px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  flex-shrink: 0;
}
.top .wordmark img {
  width: 144px;
  height: 48px;
  object-fit: contain;
}
.lang {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink3);
}
.lang a,
.lang span {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  text-decoration: none;
}
.lang span,
.lang a:hover {
  color: var(--ink);
}
.lang span {
  position: relative;
}
.lang span::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ink3);
}
.foot {
  position: relative;
  max-width: 1168px;
  margin: 96px auto 0;
  padding: 32px 0 40px;
  border-top: 1px solid var(--hair);
  font-size: 11px;
  color: var(--ink3);
}
.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
}
.foot nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: none;
}
.foot nav a:hover {
  color: var(--ink);
}
.foot p {
  margin: 12px 0 0;
  letter-spacing: .04em;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  min-height: 54px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: 3px;
  font: 500 13px/1.5 var(--sans);
  letter-spacing: .05em;
  text-decoration: none;
  transition: opacity .2s, background .2s;
}
.button:hover {
  opacity: .8;
}
.button.primary {
  background: var(--ink);
  color: var(--bg);
}
.button.quiet {
  border-color: var(--hair);
  background: transparent;
  color: var(--ink);
}
.button svg {
  width: 17px;
  height: 17px;
}
.note {
  color: var(--ink3);
  font-size: 12px;
}
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px 0;
}
.doc h1 {
  font: 400 clamp(26px, 5vw, 38px)/1.5 var(--serif);
  letter-spacing: .06em;
  margin: 0 0 12px;
}
.doc .dates {
  color: var(--ink3);
  font-size: 12px;
  margin: 0 0 40px;
}
.doc h2 {
  font-size: 17px;
  font-weight: 500;
  margin: 44px 0 14px;
}
.doc h3 {
  font-size: 15px;
  font-weight: 500;
  margin: 28px 0 10px;
}
.doc p,
.doc li {
  color: var(--ink2);
}
.doc ol,
.doc ul {
  padding-left: 1.4em;
}
.doc li {
  margin: 8px 0;
}
.doc .summary {
  padding: 20px 24px;
  margin: 32px 0;
  border-left: 1px solid var(--ink3);
  background: var(--surface);
}
.doc .summary ul {
  margin: 12px 0 0;
}
.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 18px 12px;
  border-bottom: 1px solid var(--hair);
  color: var(--ink2);
  font-size: 14px;
  overflow-wrap: anywhere;
}
.doc th {
  width: 32%;
  color: var(--ink);
  font-weight: 500;
}
.todo {
  background: #ffe35c;
  color: #15171a;
  padding: 0 4px;
  border-radius: 4px;
  font-weight: 600;
}
@media (max-width: 1248px) {
  .foot {
    margin-left: 40px;
    margin-right: 40px;
  }
}
@media (max-width: 600px) {
  .top {
    padding: 18px 24px;
    gap: 16px;
  }
  .top .wordmark img {
    width: 120px;
    height: 40px;
  }
  .foot {
    margin: 64px 24px 0;
    padding-bottom: 28px;
  }
  .foot nav {
    gap: 0 20px;
  }
  .doc {
    padding-top: 40px;
  }
  .doc th,
  .doc td {
    display: block;
    width: 100%;
    padding: 8px 0;
    border: none;
  }
  .doc th {
    padding-top: 20px;
  }
  .doc td {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--hair);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}