:root {
  color-scheme: light;
  --ink: #10236b;
  --paper: #f6f9fe;
  --sky: #3ed2f0;
  --line: #cbd4e6;
  --muted: #526187;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
}

* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.9; }
a { color: inherit; text-underline-offset: .25em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--ink); outline-offset: 5px; border-radius: 2px; }
button { font: inherit; }
button[hidden] { display: none; }
.shell { width: min(100% - 48px, 760px); margin-inline: auto; }
.site-header { padding-block: 20px; border-bottom: 1px solid var(--line); }
.header-content { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; min-height: 44px; }
.wordmark { font-size: 25px; font-weight: 750; letter-spacing: .12em; line-height: 1; }
.wordmark[href] { text-decoration: none; }
.page-nav { display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 14px; }
.page-nav [aria-current="page"] { text-decoration: none; font-weight: 700; }
.menu-toggle, .menu-close { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 44px; width: 44px; height: 44px; padding: 0; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 50%; cursor: pointer; -webkit-tap-highlight-color: transparent; transition: background-color 160ms ease; }
.menu-toggle:hover, .menu-close:hover { background: #e8eff9; }
.menu-toggle:focus-visible, .menu-close:focus-visible { border-radius: 50%; outline-offset: 3px; }
.document-menu { width: 100%; }
html[data-document-language] .site-header .document-menu { display: none; }
.document-menu .menu-heading { display: none; }
.menu-footer { margin-top: 20px; }
.menu-language-label { color: var(--muted); font-size: 13px; }
.document-drawer { position: fixed; inset: 0 0 0 auto; width: min(360px, calc(100vw - 28px)); height: 100vh; height: 100dvh; max-width: none; max-height: none; margin: 0; padding: 0; color: var(--ink); background: var(--paper); border: 0; border-left: 1px solid var(--line); box-shadow: -12px 0 48px #09133514; overflow-y: auto; overscroll-behavior: contain; }
.document-drawer::backdrop { background: #08112b66; animation: document-backdrop-in 280ms ease both; }
.document-drawer[data-closing]::backdrop { animation: document-backdrop-out 240ms ease both; }
.document-drawer .document-menu { display: flex; flex-direction: column; gap: 28px; min-height: 100%; padding: max(24px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) max(28px, env(safe-area-inset-bottom)) 24px; }
.document-drawer .menu-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.document-drawer .menu-heading h2 { margin: 0; font-size: 18px; font-weight: 650; }
.document-drawer .page-nav { display: flex; flex-direction: column; flex-wrap: nowrap; gap: 4px; font-size: 16px; }
.document-drawer .page-nav a { display: flex; align-items: center; min-height: 56px; padding: 12px 14px; border-radius: 10px; text-decoration: none; line-height: 1.5; overflow-wrap: anywhere; transition: background-color 160ms ease; }
.document-drawer .page-nav a:hover { background: #e8eff9; }
.document-drawer .page-nav a[aria-current="page"] { background: #e7eef9; font-weight: 700; }
.document-drawer .page-nav a:focus-visible { outline-offset: 2px; border-radius: 10px; }
.document-drawer .menu-footer { margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }
html[data-document-menu-open] { overflow: hidden; }
@keyframes document-backdrop-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes document-backdrop-out { from { opacity: 1; } to { opacity: 0; } }
main { padding-block: 56px 72px; }
.page-title { padding-bottom: 32px; border-bottom: 4px solid var(--sky); }
h1, h2, h3, p, ul, dl { margin: 0; }
h1 { font-size: clamp(27px, 5.4vw, 38px); font-weight: 700; line-height: 1.5; letter-spacing: .015em; }
.subtitle { margin-top: 4px; color: var(--muted); font-size: 18px; }
h1 [data-page-language] { display: block; }
html:not([data-document-language]) h1 [data-page-language="en"] { margin-top: 4px; color: var(--muted); font-size: 18px; font-weight: 400; line-height: 1.9; letter-spacing: normal; }
.language-nav { display: inline-flex; gap: 4px; max-width: 100%; margin-top: 10px; padding: 4px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; }
.language-nav a { display: flex; align-items: center; justify-content: center; min-height: 44px; padding-inline: 18px; border-radius: 999px; text-decoration: none; }
.language-nav a:hover { background: #e8eff9; }
.language-nav a[aria-current="true"] { background: var(--ink); color: var(--paper); font-weight: 700; }
.language-nav a:focus-visible { outline-offset: 2px; border-radius: 999px; }
.document { padding-top: 40px; scroll-margin-top: 24px; }
.document + .document { margin-top: 48px; border-top: 1px solid var(--line); }
html[data-document-language="ja"] .document[lang="en"],
html[data-document-language="ja"] [data-page-language="en"],
html[data-document-language="en"] .document[lang="ja"],
html[data-document-language="en"] [data-page-language="ja"] { display: none; }
html[data-document-language] .document + .document { margin-top: 0; border-top: 0; }
html[data-document-language] .document > h2 { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
h2 { font-size: 24px; line-height: 1.5; margin-bottom: 14px; }
h3 { font-size: 18px; line-height: 1.65; margin-top: 32px; margin-bottom: 10px; }
p + p, p + ul, ul + p { margin-top: 14px; }
ul { padding-left: 1.35em; }
li + li { margin-top: 8px; }
.updated { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.contact-link { display: inline-block; font-size: 22px; font-weight: 600; overflow-wrap: anywhere; }
.site-footer { border-top: 1px solid var(--line); padding-block: 24px 36px; color: var(--muted); font-size: 13px; }
.not-found { min-height: 60vh; }
.not-found p { margin-top: 20px; }
.terms-summary { margin-top: 28px; padding: 22px 24px; border: 1px solid var(--line); border-left: 4px solid var(--sky); border-radius: 12px; background: #eef4fc; }
.terms-summary h3 { margin-top: 0; }
.terms-summary p { margin-top: 16px; font-size: 14px; }
.terms-contents { display: flex; flex-wrap: wrap; gap: 8px 22px; padding-block: 24px; border-bottom: 1px solid var(--line); font-size: 14px; }
.document h3[id] { scroll-margin-top: 24px; }
.document[lang="en"] { overflow-wrap: anywhere; }
.updates-intro { color: var(--muted); }
.update-entry { padding-block: 32px; scroll-margin-top: 24px; }
.update-entry + .update-entry { border-top: 1px solid var(--line); }
.update-entry:last-child { padding-bottom: 0; }
.update-meta { display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px 16px; }
.update-version { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: .025em; text-decoration: none; }
.update-version:hover { text-decoration: underline; }
.update-platform { color: var(--muted); font-size: 13px; }
.update-entry h3 { margin-top: 12px; margin-bottom: 16px; }

@media (max-width: 480px) {
  .shell { width: calc(100% - 40px); }
  .site-header { padding-block: 14px; }
  .header-content { gap: 18px; }
  .page-nav { gap: 6px 14px; font-size: 12px; }
  main { padding-block: 36px 48px; }
  .document { padding-top: 30px; }
  .document + .document { margin-top: 36px; }
  .terms-summary { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .document-drawer::backdrop, .document-drawer[data-closing]::backdrop { animation: none; }
  .menu-toggle, .menu-close, .document-drawer .page-nav a { transition: none; }
}

@media print {
  :root { background: white; color: black; }
  .shell { width: 100%; }
  .site-header, .language-nav, .site-footer, .document-drawer { display: none; }
  main { padding: 0; }
  .page-title { border-bottom: 1px solid; }
  h2, h3, dt { break-after: avoid; }
  a { text-decoration: none; }
}