:root {
  color-scheme: dark;
  --page-bg: #020202;
  --page-ink: #ece7df;
  --page-muted: #a39c94;
  --page-faint: #706a64;
  --page-red: #b51c24;
  --page-line: rgba(190, 184, 175, 0.13);
  --page-width: 980px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--page-bg); }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--page-bg);
  color: var(--page-ink);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 4%, rgba(111, 14, 22, 0.09), transparent 34%),
    radial-gradient(circle at 13% 19%, rgba(255, 255, 255, 0.65) 0 0.7px, transparent 1.25px),
    radial-gradient(circle at 73% 11%, rgba(255, 255, 255, 0.42) 0 0.7px, transparent 1.2px),
    radial-gradient(circle at 89% 57%, rgba(255, 255, 255, 0.36) 0 0.6px, transparent 1.1px);
  background-size: auto, 235px 235px, 307px 307px, 373px 373px;
  opacity: 0.44;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.07), rgba(0, 0, 0, 0.22));
}

.static-language-toggle {
  position: fixed;
  z-index: 100;
  top: max(18px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 86px;
  min-height: 30px;
  padding: 5px 3px;
  border: 0;
  background: transparent;
  color: rgba(235, 230, 223, 0.48);
  font: 500 0.55rem/1 "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.12em;
  cursor: pointer;
}
.static-language-toggle::before { content: ""; position: absolute; inset: -7px -9px; }
.static-language-toggle i { width: 12px; height: 1px; background: linear-gradient(90deg, transparent, rgba(181, 28, 36, 0.9), transparent); }
.static-language-toggle span { transition: color 160ms ease, text-shadow 160ms ease; }
.static-language-toggle span.is-active { color: rgba(255, 251, 244, 0.96); text-shadow: 0 0 8px rgba(255, 255, 255, 0.14); }
.static-language-toggle:focus-visible { outline: 1px solid rgba(181, 28, 36, 0.7); outline-offset: 5px; }

.site-brand {
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(247, 242, 235, 0.86);
  text-decoration: none;
  text-align: center;
  letter-spacing: 0.23em;
  white-space: nowrap;
  font: 400 0.7rem/1.25 "Helvetica Neue", Arial, sans-serif;
}
.site-brand small { display: block; margin-top: 3px; color: rgba(220, 214, 205, 0.34); font: 500 0.36rem/1.2 "IBM Plex Mono", monospace; letter-spacing: 0.23em; }
.site-brand b { color: var(--page-red); font-weight: 500; }

.page-shell {
  width: min(var(--page-width), calc(100% - 44px));
  margin: 0 auto;
  padding: 106px 0 104px;
}
.page-header { max-width: 800px; margin-bottom: 54px; }
.eyebrow {
  display: block;
  color: var(--page-red);
  font: 500 0.62rem/1.5 "IBM Plex Mono", monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1 {
  margin: 10px 0 18px;
  color: rgba(247, 242, 235, 0.96);
  font: 320 clamp(2.2rem, 7vw, 5.6rem)/0.98 "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.lead {
  max-width: 760px;
  margin: 0;
  color: rgba(220, 214, 205, 0.76);
  font: 400 clamp(0.92rem, 1.7vw, 1.08rem)/1.78 "Helvetica Neue", Arial, sans-serif;
}
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 20px;
  color: rgba(220, 214, 205, 0.42);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.content-section {
  padding: 38px 0;
  border-top: 1px solid var(--page-line);
}
.content-section h2 {
  margin: 0 0 14px;
  color: rgba(245, 240, 233, 0.9);
  font: 500 0.88rem/1.4 "IBM Plex Mono", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.content-section h3 {
  margin: 24px 0 8px;
  color: rgba(245, 240, 233, 0.82);
  font: 500 0.72rem/1.45 "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.content-section p,
.content-section li,
.contact-card p {
  max-width: 820px;
  color: var(--page-muted);
  font: 400 0.91rem/1.78 "Helvetica Neue", Arial, sans-serif;
}
.content-section p { margin: 0 0 12px; }
.content-section ul,
.content-section ol { margin: 12px 0 0; padding-left: 21px; }
.content-section li + li { margin-top: 8px; }
.content-section a,
.contact-card a { color: rgba(248, 243, 236, 0.9); text-underline-offset: 4px; }
.content-section a:hover,
.content-section a:focus-visible,
.contact-card a:hover,
.contact-card a:focus-visible { color: #fff; text-shadow: 0 0 9px rgba(255, 255, 255, 0.16); }

.fact-grid,
.link-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 18px;
  background: var(--page-line);
}
.fact,
.link-card,
.contact-card {
  min-width: 0;
  padding: 18px;
  background: rgba(2, 2, 2, 0.92);
}
.fact small,
.link-card small,
.contact-card small {
  display: block;
  margin-bottom: 7px;
  color: rgba(181, 28, 36, 0.85);
  font-size: 0.55rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.fact strong,
.link-card strong,
.contact-card strong {
  display: block;
  color: rgba(248, 243, 236, 0.9);
  font: 500 0.78rem/1.5 "IBM Plex Mono", monospace;
  letter-spacing: 0.04em;
}
.fact span,
.link-card p,
.contact-card p { display: block; margin: 6px 0 0; color: var(--page-muted); font: 400 0.82rem/1.65 "Helvetica Neue", Arial, sans-serif; }
.link-card { position: relative; text-decoration: none; transition: background 150ms ease, transform 150ms ease; }
.link-card:hover,
.link-card:focus-visible { background: rgba(14, 4, 5, 0.94); transform: translateY(-1px); outline: none; }
.link-card::after { content: "↗"; position: absolute; top: 16px; right: 17px; color: rgba(181, 28, 36, 0.72); }

.notice-box {
  margin: 18px 0;
  padding: 15px 17px;
  border-left: 1px solid rgba(181, 28, 36, 0.64);
  color: rgba(220, 214, 205, 0.7);
  background: rgba(181, 28, 36, 0.025);
  font: 400 0.81rem/1.7 "Helvetica Neue", Arial, sans-serif;
}

.policy-table { width: 100%; border-collapse: collapse; margin-top: 18px; }
.policy-table th,
.policy-table td { padding: 12px 10px; border-top: 1px solid var(--page-line); text-align: left; vertical-align: top; }
.policy-table th { width: 24%; color: rgba(245, 240, 233, 0.8); font: 500 0.59rem/1.5 "IBM Plex Mono", monospace; letter-spacing: 0.07em; text-transform: uppercase; }
.policy-table td { color: var(--page-muted); font: 400 0.82rem/1.65 "Helvetica Neue", Arial, sans-serif; }

.page-nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto 30px;
  padding-top: 22px;
  border-top: 1px solid var(--page-line);
}
.page-nav__links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 0.54rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.page-nav__links a,
.page-nav__links button {
  border: 0;
  padding: 2px 0;
  background: transparent;
  color: rgba(220, 214, 205, 0.55);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  text-decoration: none;
  cursor: pointer;
}
.page-nav__links a:hover,
.page-nav__links a:focus-visible,
.page-nav__links button:hover,
.page-nav__links button:focus-visible,
.page-nav__links a[aria-current="page"] { color: rgba(255, 250, 243, 0.92); outline: none; text-shadow: 0 0 8px rgba(255, 255, 255, 0.14); }

.site-legal {
  width: min(1320px, calc(100% - 34px));
  margin: 0 auto;
  padding: 18px 0 max(24px, env(safe-area-inset-bottom));
  color: rgba(220, 214, 205, 0.43);
  text-align: center;
  font: 500 0.47rem/1.65 "IBM Plex Mono", monospace;
  letter-spacing: 0.03em;
}
.site-legal::before { content: "✦   ✧   ✦"; display: block; margin-bottom: 7px; color: rgba(255, 250, 240, 0.6); text-shadow: 0 0 8px rgba(255, 255, 255, 0.26); }
.site-legal p { max-width: 1180px; margin: 2px auto; color: inherit; font: inherit; }
.site-legal strong { color: rgba(255, 250, 242, 0.84); letter-spacing: 0.09em; text-transform: uppercase; }

[data-lang] { display: none; }
html[data-locale="en"] [data-lang="en"],
html[data-locale="ja"] [data-lang="ja"] { display: block; }
html[data-locale="ja"] body,
html[data-locale="ja"] button,
html[data-locale="ja"] a { font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; }
html[data-locale="ja"] h1,
html[data-locale="ja"] h2,
html[data-locale="ja"] h3,
html[data-locale="ja"] .eyebrow,
html[data-locale="ja"] .page-nav__links { text-transform: none; letter-spacing: 0.055em; line-height: 1.55; }
html[data-locale="ja"] .content-section p,
html[data-locale="ja"] .content-section li,
html[data-locale="ja"] .lead { line-height: 1.95; }

.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 720px) {
  .page-shell { width: min(100% - 28px, var(--page-width)); padding-top: 82px; }
  .site-brand { top: 18px; font-size: 0.62rem; }
  .fact-grid, .link-grid, .contact-grid { grid-template-columns: 1fr; }
  .policy-table, .policy-table tbody, .policy-table tr, .policy-table th, .policy-table td { display: block; width: 100%; }
  .policy-table th { padding-bottom: 3px; }
  .policy-table td { padding-top: 3px; }
  .page-nav__links { gap: 9px 13px; }
  .site-legal { font-size: 0.43rem; }
  .static-language-toggle { top: max(12px, env(safe-area-inset-top)); right: max(12px, env(safe-area-inset-right)); min-width: 76px; font-size: 0.5rem; }
}