:root {
  --ink: #202119;
  --muted: #67665c;
  --paper: #f7f4ed;
  --sand: #e7decd;
  --clay: #a54d39;
  --clay-dark: #793324;
  --line: rgba(32, 33, 25, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.nav { align-items: center; display: flex; justify-content: space-between; padding-block: 27px; }
.wordmark { font-family: Georgia, serif; font-size: 25px; font-weight: 600; letter-spacing: -0.055em; text-decoration: none; }
.nav-controls, .nav-links { align-items: center; display: flex; }
.nav-controls { gap: 20px; }
.nav-links { gap: 24px; }
.nav-links a, .footer a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav-links a:hover, .footer a:hover { color: var(--clay-dark); text-decoration: underline; text-underline-offset: 4px; }
.language-select { appearance: none; background: #fffdf8; border: 1px solid var(--line); border-radius: 0; color: var(--clay-dark); cursor: pointer; font: inherit; font-size: 12px; font-weight: 700; padding: 5px 26px 5px 9px; }
.language-select:hover { background: #fff; }
.utility-row { align-items: center; display: flex; justify-content: space-between; }
.hero { overflow: hidden; position: relative; }
.hero::before { background: radial-gradient(circle at 94% 2%, rgba(212,155,108,.24), transparent 30%), linear-gradient(105deg, rgba(247,244,237,0) 59%, rgba(231,222,205,.66)); content: ""; inset: 0; pointer-events: none; position: absolute; }
.hero-grid { align-items: center; display: grid; gap: 50px; grid-template-columns: 1.05fr .95fr; min-height: 620px; padding-block: 58px 86px; position: relative; }
.eyebrow { color: var(--clay-dark); font-size: 11px; font-weight: 700; letter-spacing: .16em; margin: 0 0 16px; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; line-height: 1.08; }
h1 { font-size: clamp(50px, 6vw, 78px); letter-spacing: -.055em; margin: 0; }
h2 { font-size: clamp(35px, 4vw, 50px); letter-spacing: -.045em; margin: 0; }
h3 { font-size: 30px; letter-spacing: -.035em; margin: 0 0 13px; }
.lead { font-size: 18px; line-height: 1.85; margin: 29px 0 0; max-width: 530px; }
.ja-lead { color: var(--muted); font-size: 14px; margin: 14px 0 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 34px; }
.button { align-items: center; display: inline-flex; font-size: 14px; font-weight: 600; gap: 22px; padding: 12px 19px; text-decoration: none; transition: transform .2s ease, background-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--clay); color: #fff; }
.button-primary:hover { background: var(--clay-dark); }
.button-quiet { border: 1px solid var(--line); color: var(--ink); }
.button-quiet:hover { background: #fffdf8; }
.mineral-frame { aspect-ratio: 1; isolation: isolate; position: relative; }
.mineral-frame::before, .mineral-frame::after { content: ""; position: absolute; z-index: -1; }
.mineral-frame::before { border: 1px solid rgba(165,77,57,.48); height: 83%; right: -10%; top: 10%; transform: rotate(28deg); width: 83%; }
.mineral-frame::after { background: var(--sand); bottom: 3%; clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); height: 41%; left: -8%; opacity: .76; width: 41%; }
.mineral-glow { background: #fff8e6; border-radius: 50%; filter: blur(10px); height: 74%; left: 14%; position: absolute; top: 13%; width: 74%; z-index: -1; }
.mineral-image { height: 100%; object-fit: cover; object-position: 48% 52%; width: 100%; }
.image-note { background: var(--ink); bottom: -15px; color: #f9f3e9; font-family: Georgia, serif; font-size: 15px; left: -20px; line-height: 1.3; margin: 0; padding: 14px 19px; position: absolute; }
.purpose { align-items: start; border-top: 1px solid var(--line); display: grid; gap: 75px; grid-template-columns: .9fr 1.1fr; padding-block: 116px; }
.purpose p { color: var(--muted); font-size: 18px; margin: 6px 0 0; max-width: 540px; }
.links-section { padding-bottom: 110px; }
.section-heading { margin-bottom: 36px; }
.card-grid { display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); }
.info-card { background: #ede4d5; min-height: 280px; padding: 31px; position: relative; text-decoration: none; transition: transform .22s ease, background-color .22s ease; }
.info-card:nth-child(2) { background: #e6e4da; }
.info-card:hover { background: #dfd1bd; transform: translateY(-5px); }
.card-number { color: var(--clay-dark); font-family: Georgia, serif; font-size: 14px; }
.info-card p { color: var(--muted); font-size: 15px; line-height: 1.75; max-width: 365px; }
.card-link { bottom: 28px; color: var(--clay-dark); font-size: 14px; font-weight: 700; left: 31px; position: absolute; }
.footer { border-top: 1px solid var(--line); color: var(--muted); display: flex; font-size: 13px; justify-content: space-between; padding-block: 25px 35px; }
.footer p { margin: 0; }
.footer div { display: flex; gap: 22px; }
.policy-page { min-height: 100vh; }
.page-header { border-bottom: 1px solid var(--line); padding-bottom: 48px; padding-top: 43px; }
.page-header h1 { font-size: clamp(46px, 6vw, 70px); }
.page-header .lead { margin-top: 21px; max-width: none; }
.back-link { color: var(--clay-dark); display: inline-block; font-size: 14px; font-weight: 700; margin-bottom: 46px; text-decoration: none; }
.back-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.content { margin-inline: auto; max-width: 760px; padding-block: 76px 100px; }
.content section { margin-bottom: 56px; }
.content h2 { font-size: 31px; margin-bottom: 16px; }
.content h3 { font-family: inherit; font-size: 18px; font-weight: 700; letter-spacing: 0; line-height: 1.5; margin-top: 26px; }
.content p, .content li { color: #48483f; }
.content ul { padding-left: 22px; }
.content li { margin-bottom: 9px; }
.notice { background: #ebe1ce; border-left: 4px solid var(--clay); margin: 28px 0; padding: 22px 24px; }
.notice p { margin: 0; }
.contact-panel { background: var(--ink); color: #fbf5e9; margin-top: 42px; padding: 32px; }
.contact-panel h2, .contact-panel p { color: inherit; }
.contact-panel a { color: #f5c69a; font-weight: 700; }
.updated { color: var(--muted); font-size: 14px; margin-top: 15px; }
@media (max-width: 760px) {
  .shell { width: min(100% - 36px, 600px); }
  .nav { padding-block: 20px; }
  .nav-controls { gap: 10px; }
  .nav-links { gap: 13px; }
  .nav-links a { font-size: 13px; }
  .hero-grid { gap: 42px; grid-template-columns: 1fr; min-height: auto; padding-block: 50px 73px; }
  .mineral-frame { margin-inline: auto; max-width: 470px; width: 92%; }
  .image-note { left: -9px; }
  .purpose { gap: 27px; grid-template-columns: 1fr; padding-block: 75px; }
  .card-grid { grid-template-columns: 1fr; }
  .info-card { min-height: 240px; }
  .footer { align-items: start; flex-direction: column; gap: 12px; }
  .page-header { padding-bottom: 37px; padding-top: 28px; }
  .content { padding-block: 56px 72px; }
}