:root {
  --ink: #142729;
  --muted: #5e6c69;
  --paper: #f4f1e8;
  --card: #fbfaf5;
  --accent: #167d72;
  --line: rgba(20, 39, 41, 0.18);
  --frame: min(1180px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(20, 39, 41, 0.035) 1px, transparent 1px) 0 0 / 80px 80px,
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.frame { width: var(--frame); margin-inline: auto; }
[data-ui-language="ja"] { display: none; }
html[data-language="ja"] [data-ui-language="en"] { display: none; }
html[data-language="ja"] [data-ui-language="ja"] { display: inline; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 1px solid var(--line); background: rgba(244, 241, 232, 0.92); }
.header-inner {
  display: flex;
  min-height: 84px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.header-inner > p {
  margin: 0;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}
.wordmark-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.72rem;
}

.policy-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.31fr) minmax(0, 0.69fr);
  gap: clamp(44px, 7vw, 112px);
  align-items: start;
  padding-block: clamp(56px, 8vw, 108px);
}
.rail-inner { position: sticky; top: 44px; }
.eyebrow, .control-label, .document-kicker, .section-number, .document-meta dt {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  text-transform: uppercase;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.product-name {
  margin: 0;
  font-size: clamp(2rem, 3.7vw, 3.25rem);
  font-weight: 580;
  line-height: 1.02;
}
.language-block { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); }
.control-label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.language-switcher { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); }
.language-switcher button {
  min-height: 46px;
  border: 0;
  border-right: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
}
.language-switcher button:last-child { border-right: 0; }
.language-switcher button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.language-note, .noscript-note { margin: 14px 0 0; color: var(--muted); font-size: 0.84rem; line-height: 1.55; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 46px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--ink);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.policy-document { min-width: 0; border: 1px solid var(--line); background: var(--card); }
.document-header { padding: clamp(36px, 6vw, 70px); border-bottom: 1px solid var(--line); }
.document-kicker {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}
h1, h2, p { margin-top: 0; }
h1 {
  max-width: 720px;
  margin-bottom: 42px;
  font-size: clamp(2.25rem, 5vw, 4.8rem);
  font-weight: 560;
  line-height: 1;
}
[lang="ja"] h1 { font-size: clamp(1.9rem, 4vw, 3.2rem); line-height: 1.12; }
[lang="ja"] h1 .title-product, [lang="ja"] h1 .title-policy { display: block; }
[lang="ja"] h1 .title-policy { margin-top: 0.22em; white-space: nowrap; }
.document-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin: 0; }
.document-meta div { padding-top: 14px; border-top: 2px solid var(--ink); }
.document-meta dt { margin-bottom: 4px; color: var(--muted); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; }
.document-meta dd { margin: 0; font-weight: 650; }

.policy-section {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: clamp(18px, 4vw, 38px);
  padding: clamp(34px, 5vw, 58px) clamp(28px, 6vw, 70px);
  border-bottom: 1px solid var(--line);
}
.policy-section:last-child { border-bottom: 0; }
.section-number { margin: 2px 0 0; color: var(--accent); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; }
h2 { margin-bottom: 22px; font-size: clamp(1.28rem, 2.2vw, 1.72rem); font-weight: 650; line-height: 1.3; }
.policy-section p:not(.section-number) { max-width: 68ch; margin-bottom: 18px; color: #405052; }
.policy-section p:last-child { margin-bottom: 0; }
.policy-section a:not(.email-link) { color: var(--accent); font-weight: 700; text-underline-offset: 4px; }
.contact-section { background: var(--ink); color: #eef5f0; }
.contact-section h2, .contact-section .section-number { color: #8ed8c9; }
.contact-section p:not(.section-number) { color: rgba(238, 245, 240, 0.72); }
.email-link {
  display: inline-flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 5px;
  border-bottom: 2px solid #eef5f0;
  color: #eef5f0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.05rem, 2.7vw, 1.75rem);
  font-weight: 600;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.site-footer { background: var(--ink); color: rgba(238, 245, 240, 0.7); }
.footer-inner {
  display: flex;
  min-height: 104px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.footer-inner p { margin: 0; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.contact-section :focus-visible, .site-footer :focus-visible { outline-color: #8ed8c9; }

@media (max-width: 860px) {
  :root { --frame: min(100% - 36px, 740px); }
  .policy-layout { grid-template-columns: 1fr; gap: 38px; padding-top: 48px; }
  .rail-inner { position: static; display: grid; grid-template-columns: 1fr minmax(260px, 0.65fr); gap: 34px; }
  .language-block { margin-top: 0; }
  .back-link { margin-top: 10px; }
}

@media (max-width: 600px) {
  .header-inner { min-height: 74px; }
  .header-inner > p { display: none; }
  .rail-inner { display: block; }
  .language-block { margin-top: 34px; }
  .document-header { padding: 34px 26px 38px; }
  h1 { margin-bottom: 34px; }
  [lang="ja"] h1 .title-policy { white-space: normal; }
  .document-meta { grid-template-columns: 1fr; }
  .policy-section { grid-template-columns: 1fr; gap: 10px; padding: 34px 26px 38px; }
  .section-number { margin-bottom: 0; }
  h2 { margin-bottom: 18px; }
  .footer-inner { min-height: 120px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}