/* ==========================================================================
   Hyperion Inc. — Corporate Site Design System
   Version 1.0 (2026-10)
   Single stylesheet. No external dependencies.
   ========================================================================== */

/* ---------- Fonts ----------
   Display: Noto Serif CJK JP (SIL Open Font License 1.1), subset to glyphs used
   in headings. Body: OS-native sans-serif stacks (no download). */
@font-face {
  font-family: "Hyperion Serif";
  src: url("../fonts/hyperion-serif-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Hyperion Serif";
  src: url("../fonts/hyperion-serif-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  /* Brand — monochrome with a single restrained accent (v2, 2026-10) */
  --dark: #121212;          /* dark band (Palantir-like), CTA, footer */
  --dark-2: #1C1C1C;        /* secondary dark */
  --ink: #111111;           /* primary text */
  --paper: #FFFFFF;
  --mist: #F4F4F1;          /* warm neutral alternate surface */
  --accent: #1F5C4C;        /* single accent: diagrams, links (AA 7.6:1 on white) */
  --accent-on-dark: #8FC2B0;/* accent on dark surfaces */
  --steel: #5C5C5C;         /* secondary text (AA 6.7:1 on white) */
  --steel-light: #A6A6A0;   /* secondary text on dark (AA 7.6:1 on #121212) */
  --rule: #DADAD5;          /* hairlines on light */
  --rule-dark: #333333;     /* hairlines on dark */

  /* Type */
  --font-sans-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Noto Sans CJK JP", "Yu Gothic UI", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  --font-sans-en: "Helvetica Neue", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --font-serif: "Hyperion Serif", "Noto Serif JP", "Noto Serif CJK JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", Georgia, serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* Layout */
  --max: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
  --section: clamp(72px, 10vw, 144px);
  --radius: 2px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; }
table { border-collapse: collapse; width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans-ja);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "palt" 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html[lang="en"] body { font-family: var(--font-sans-en); line-height: 1.7; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.on-dark :focus-visible, .site-header :focus-visible, .site-footer :focus-visible { outline-color: var(--accent-on-dark); }

.skip-link {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  background: var(--paper); color: var(--ink); padding: 10px 16px; text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: 12px; }

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- Typography ---------- */
.display, h1, h2, .serif { font-family: var(--font-serif); font-weight: 600; letter-spacing: 0.01em; }
h1 { font-size: clamp(34px, 5.2vw, 68px); line-height: 1.32; }
html[lang="en"] h1 { line-height: 1.12; letter-spacing: -0.01em; }
h2 { font-size: clamp(26px, 3.4vw, 44px); line-height: 1.45; }
html[lang="en"] h2 { line-height: 1.2; letter-spacing: -0.005em; }
h3 { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.6; font-weight: 700; }
html[lang="en"] h3 { line-height: 1.35; }
h4 { font-size: 15px; font-weight: 700; line-height: 1.6; }

.lede { font-size: clamp(17px, 1.5vw, 20px); line-height: 1.95; color: var(--steel); max-width: 44em; }
html[lang="en"] .lede { line-height: 1.6; }
.on-dark .lede { color: var(--steel-light); }
.small { font-size: 14px; line-height: 1.8; }
.muted { color: var(--steel); }
.on-dark .muted { color: var(--steel-light); }
.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }

/* Section label: neutral, numbered — no colour */
.label {
  display: flex; gap: 14px; align-items: baseline;
  font-family: var(--font-sans-en); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--steel); margin-bottom: 28px;
}
.label .num { font-family: var(--font-mono); letter-spacing: 0.04em; }
.on-dark .label { color: var(--steel-light); }

p + p { margin-top: 1.1em; }
.prose p, .prose li { max-width: 40em; }
.prose h3 { margin: 2.2em 0 0.6em; }
.prose ul { margin: 1em 0 0 1.2em; }
.prose li + li { margin-top: 0.4em; }

a.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.on-dark a.text-link { color: var(--accent-on-dark); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #FFFFFF;
  color: var(--paper);
  border-bottom: 1px solid var(--rule-dark);
}
@supports (backdrop-filter: blur(8px)) {
  .site-header { background: rgba(255,255,255,0.92); backdrop-filter: blur(10px); }
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--paper); }
.brand svg { width: 28px; height: 28px; }
.brand-word { font-family: var(--font-sans-en); font-size: 15px; font-weight: 600; letter-spacing: 0.28em; }

.primary-nav ul { display: flex; list-style: none; gap: 4px; align-items: center; }
.primary-nav a {
  display: block; padding: 10px 12px; font-size: 14px; text-decoration: none; color: #DCDCD7;
  border-bottom: 1px solid transparent;
}
html[lang="en"] .primary-nav a { font-size: 14px; }
.primary-nav a:hover { color: var(--paper); }
.primary-nav a[aria-current="page"] { color: var(--paper); border-bottom-color: var(--accent-on-dark); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.lang-switch { display: inline-flex; font-family: var(--font-sans-en); font-size: 12px; letter-spacing: 0.1em; border: 1px solid var(--rule-dark); }
.lang-switch a, .lang-switch span { padding: 6px 10px; text-decoration: none; color: var(--steel-light); }
.lang-switch [aria-current="true"] { color: var(--dark); background: var(--paper); }
.header-cta { font-size: 13px; }

.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; color: var(--paper); }
.nav-toggle span { display: block; width: 20px; height: 1px; background: currentColor; position: relative; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; width: 20px; height: 1px; background: currentColor; transition: transform .2s ease; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1080px) {
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .primary-nav {
    position: fixed; inset: 72px 0 0 0; background: var(--dark); padding: 24px var(--gutter) 48px;
    overflow-y: auto; display: none;
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { font-size: 18px; padding: 16px 0; border-bottom: 1px solid var(--rule-dark); }
  .primary-nav a[aria-current="page"] { border-bottom-color: var(--rule-dark); color: var(--accent-on-dark); }
  .primary-nav .nav-mobile-cta { display: block; margin-top: 32px; }
}
.nav-mobile-cta { display: none; }
@media (min-width: 1081px) { .primary-nav .nav-mobile-cta { display: none !important; } }
/* No-JS fallback: show nav inline */
.no-js .nav-toggle { display: none; }
@media (max-width: 1080px) { .no-js .primary-nav { position: static; display: block; padding: 0 0 16px; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px; min-height: 48px; padding: 12px 22px;
  font-size: 15px; font-weight: 600; text-decoration: none; border: 1px solid transparent; border-radius: var(--radius);
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary { background: var(--paper); color: var(--dark); }
.btn-primary:hover { background: #EAEAE6; }
.btn-dark { background: var(--dark); color: var(--paper); }
.btn-dark:hover { background: var(--dark-2); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: var(--paper); }
.btn-ghost:hover { border-color: var(--paper); }
.btn-line { border-color: var(--ink); color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }

/* ---------- Sections ---------- */
.section { padding: var(--section) 0; }
.section-tight { padding: calc(var(--section) * 0.6) 0; }
.bg-mist { background: var(--mist); }
.on-dark { background: var(--dark); color: var(--paper); }
.on-dark.alt { background: var(--dark-2); }
.rule-top { border-top: 1px solid var(--rule); }
.on-dark.rule-top { border-top-color: var(--rule-dark); }

.section-head { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; margin-bottom: clamp(40px, 6vw, 80px); }
.section-head > .h { grid-column: 1 / span 7; }
.section-head > .d { grid-column: 8 / span 5; align-self: end; }
@media (max-width: 900px) {
  .section-head > .h, .section-head > .d { grid-column: 1 / -1; }
}

/* ---------- Hero ---------- */
.hero { background: var(--dark); color: var(--paper); position: relative; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; padding-top: clamp(72px, 11vw, 150px); padding-bottom: clamp(72px, 10vw, 136px); }
.hero-copy { grid-column: 1 / span 7; }
.hero-figure { grid-column: 8 / span 5; align-self: center; }
.hero .tagline { font-family: var(--font-sans-en); font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel-light); margin-bottom: 32px; }
.hero h1 { margin-bottom: 32px; }
.hero .lede { color: #C9C9C4; }
.hero-grid-bg { position: absolute; inset: 0; pointer-events: none; opacity: .5; }
@media (max-width: 960px) {
  .hero-copy, .hero-figure { grid-column: 1 / -1; }
  .hero-figure { margin-top: 24px; }
}

.page-hero { background: var(--dark); color: var(--paper); }
.page-hero .wrap { padding-top: clamp(64px, 9vw, 120px); padding-bottom: clamp(56px, 8vw, 104px); }
.page-hero h1 { font-size: clamp(32px, 4.4vw, 56px); max-width: 18em; margin-bottom: 28px; }
.page-hero .lede { color: #C9C9C4; }
.breadcrumb { font-size: 13px; color: var(--steel-light); margin-bottom: 40px; }
.breadcrumb ol { list-style: none; display: flex; gap: 10px; flex-wrap: wrap; }
.breadcrumb li + li::before { content: "/"; margin-right: 10px; opacity: .6; }
.breadcrumb a { color: var(--steel-light); text-decoration: none; }
.breadcrumb a:hover { color: var(--paper); }

/* ---------- Grids ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 3.5vw, 56px); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(24px, 3vw, 40px); }
.split { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split.rev { grid-template-columns: 7fr 5fr; }
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .split, .split.rev, .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Column item: top rule instead of boxed cards */
.col { border-top: 1px solid var(--rule); padding-top: 24px; }
.on-dark .col { border-top-color: var(--rule-dark); }
.col h3 { margin-bottom: 12px; }
.col p { font-size: 15px; color: var(--steel); }
.on-dark .col p { color: var(--steel-light); }
.col .idx { font-family: var(--font-mono); font-size: 12px; color: var(--steel); display: block; margin-bottom: 14px; }
.on-dark .col .idx { color: var(--steel-light); }

/* Statement */
.statement { font-family: var(--font-serif); font-weight: 400; font-size: clamp(24px, 3vw, 38px); line-height: 1.6; max-width: 26em; }
html[lang="en"] .statement { line-height: 1.35; }

/* ---------- PDIT framework ---------- */
.pdit { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.pdit > div { padding: 32px 28px 36px; border-left: 1px solid var(--rule); }
.pdit > div:first-child { border-left: 0; padding-left: 0; }
.pdit .k { font-family: var(--font-sans-en); font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--steel); }
.pdit .q { font-family: var(--font-serif); font-size: clamp(22px, 2.2vw, 28px); font-weight: 600; margin: 10px 0 14px; line-height: 1.4; }
.pdit p { font-size: 15px; color: var(--steel); }
.pdit .op { font-family: var(--font-mono); color: var(--accent); }
@media (max-width: 960px) {
  .pdit { grid-template-columns: 1fr 1fr; }
  .pdit > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .pdit > div:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 560px) {
  .pdit { grid-template-columns: 1fr; }
  .pdit > div { border-left: 0; padding-left: 0; }
  .pdit > div + div { border-top: 1px solid var(--rule); }
}

/* ---------- Exhibits (figures) ---------- */
.exhibit { margin-top: 8px; }
.exhibit-frame { border: 1px solid var(--rule); background: var(--paper); padding: clamp(16px, 3vw, 40px); overflow-x: auto; }
.on-dark .exhibit-frame { border-color: var(--rule-dark); background: transparent; }
.bg-mist .exhibit-frame { background: var(--paper); }
.exhibit figcaption { display: flex; gap: 16px; font-size: 13px; color: var(--steel); margin-top: 14px; line-height: 1.7; }
.on-dark .exhibit figcaption { color: var(--steel-light); }
.exhibit figcaption b { font-family: var(--font-sans-en); font-weight: 600; letter-spacing: 0.06em; white-space: nowrap; color: var(--ink); }
.on-dark .exhibit figcaption b { color: var(--paper); }
.exhibit svg { width: 100%; min-width: 560px; }
.exhibit.fluid svg { min-width: 0; }
.exhibit svg text { font-family: var(--font-sans-ja); }
html[lang="en"] .exhibit svg text { font-family: var(--font-sans-en); }
.exhibit svg .serif-t { font-family: var(--font-serif); }
.exhibit svg .mono-t { font-family: var(--font-mono); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { font-size: 15px; min-width: 640px; }
.data-table th, .data-table td { text-align: left; vertical-align: top; padding: 18px 20px 18px 0; border-bottom: 1px solid var(--rule); }
.data-table thead th { font-size: 12px; font-family: var(--font-sans-en); letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); font-weight: 600; border-bottom: 1px solid var(--ink); }
.data-table tbody th { font-weight: 700; width: 24%; }
.data-table td { color: #2A2A2A; }
.on-dark .data-table th, .on-dark .data-table td { border-bottom-color: var(--rule-dark); color: #DCDCD7; }
.on-dark .data-table thead th { border-bottom-color: var(--steel-light); color: var(--steel-light); }

/* Definition list (company profile) */
.profile { border-top: 1px solid var(--ink); }
.profile > div { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.profile dt { font-weight: 700; font-size: 15px; }
.profile dd { font-size: 15px; color: #2A2A2A; }
@media (max-width: 620px) { .profile > div { grid-template-columns: 1fr; gap: 4px; } }

/* Status tags (only place outside diagrams where colour carries meaning; text always present) */
.tag { display: inline-block; font-family: var(--font-sans-en); font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; padding: 3px 8px; border: 1px solid currentColor; border-radius: var(--radius); white-space: nowrap; line-height: 1.5; }
html[lang="ja"] .tag { font-family: var(--font-sans-ja); letter-spacing: 0.04em; text-transform: none; font-size: 12px; }
.tag-avail { color: var(--ink); background: var(--ink); color: var(--paper); }
.tag-int { color: var(--ink); }
.tag-road { color: var(--steel); border-style: dashed; }
.on-dark .tag-avail { background: var(--paper); color: var(--ink); }
.on-dark .tag-int { color: var(--paper); }
.on-dark .tag-road { color: var(--steel-light); }
.legend { display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 14px; color: var(--steel); margin: 0 0 32px; align-items: center; }
.legend > span { display: inline-flex; gap: 8px; align-items: center; }

/* ---------- Industry blocks ---------- */
.industry { padding: clamp(56px, 7vw, 96px) 0; border-top: 1px solid var(--rule); }
.industry:first-of-type { border-top: 0; }
.industry-head { display: grid; grid-template-columns: 4fr 8fr; gap: clamp(24px, 5vw, 80px); margin-bottom: 40px; }
.industry-head .k { font-family: var(--font-sans-en); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel); margin-bottom: 12px; display: block; }
@media (max-width: 900px) { .industry-head { grid-template-columns: 1fr; } }

/* Sub navigation (in-page) */
.subnav { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 72px; z-index: 20; }
.subnav ul { list-style: none; display: flex; gap: 28px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.subnav ul::-webkit-scrollbar { display: none; }
.subnav a { display: block; padding: 16px 0; font-size: 14px; color: var(--steel); text-decoration: none; border-bottom: 1px solid transparent; }
.subnav a:hover { color: var(--ink); border-bottom-color: var(--ink); }
[id] { scroll-margin-top: 140px; }

/* ---------- People ---------- */
.person { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 5vw, 80px); padding: 48px 0; border-top: 1px solid var(--rule); }
.person .role { font-size: 13px; color: var(--steel); letter-spacing: 0.04em; }
.person .name { font-family: var(--font-serif); font-size: clamp(24px, 2.4vw, 30px); font-weight: 600; margin: 6px 0 4px; }
.person .name-en { font-family: var(--font-sans-en); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); }
@media (max-width: 900px) { .person { grid-template-columns: 1fr; } }

/* Message */
.message { max-width: 44em; }
.message p { font-size: 17px; line-height: 2.05; }
html[lang="en"] .message p { line-height: 1.75; }
.signature { margin-top: 40px; font-size: 15px; }
.signature .serif { font-size: 22px; display: block; margin-top: 4px; }

/* Pull quote */
.pull { border-left: 1px solid var(--ink); padding: 4px 0 4px 28px; font-family: var(--font-serif); font-size: clamp(20px, 2vw, 26px); line-height: 1.7; margin: 48px 0; max-width: 30em; }
html[lang="en"] .pull { line-height: 1.45; }

/* Note box (disclosure) */
.note { font-size: 13px; line-height: 1.8; color: var(--steel); border-top: 1px solid var(--rule); padding-top: 20px; margin-top: 48px; max-width: 60em; }
.on-dark .note { color: var(--steel-light); border-top-color: var(--rule-dark); }

/* ---------- Article ---------- */
.article { display: grid; grid-template-columns: 3fr 9fr; gap: clamp(32px, 5vw, 80px); }
.article-meta { font-size: 14px; color: var(--steel); position: sticky; top: 112px; align-self: start; }
.article-meta dl > div { padding: 12px 0; border-top: 1px solid var(--rule); }
.article-meta dt { font-family: var(--font-sans-en); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; }
.article-meta dd { color: var(--ink); }
.article-body { max-width: 42em; }
.article-body h2 { font-size: clamp(22px, 2.4vw, 30px); margin: 64px 0 20px; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { font-size: 17px; line-height: 2.05; }
html[lang="en"] .article-body p { line-height: 1.75; }
.article-body ol { margin: 1em 0 0 1.4em; }
.article-body li { margin-top: .5em; }
@media (max-width: 900px) { .article { grid-template-columns: 1fr; } .article-meta { position: static; } }

/* ---------- CTA band ---------- */
.cta-band { background: var(--dark); color: var(--paper); }
.cta-band .wrap { padding-top: clamp(72px, 9vw, 120px); padding-bottom: clamp(72px, 9vw, 120px); display: grid; grid-template-columns: 7fr 5fr; gap: 48px; align-items: end; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 42px); }
.cta-band .actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
@media (max-width: 900px) { .cta-band .wrap { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-list { border-top: 1px solid var(--ink); }
.contact-item { display: grid; grid-template-columns: 4fr 6fr 3fr; gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--rule); align-items: start; }
.contact-item h3 { font-size: 19px; }
.contact-item p { font-size: 15px; color: var(--steel); }
.contact-item .btn { justify-self: end; }
@media (max-width: 900px) { .contact-item { grid-template-columns: 1fr; } .contact-item .btn { justify-self: start; } }
.email-display { font-family: var(--font-mono); font-size: clamp(18px, 2vw, 24px); word-break: break-all; }

/* ---------- Footer ---------- */
.site-footer { background: #0A0A0A; color: var(--steel-light); font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 4fr 8fr; gap: 48px; padding: 72px 0 56px; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-cols h2 { font-family: var(--font-sans-en); font-size: 11px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel-light); margin-bottom: 16px; }
.footer-cols ul { list-style: none; }
.footer-cols li + li { margin-top: 8px; }
.footer-cols a, .footer-bottom a { color: #DCDCD7; text-decoration: none; }
.footer-cols a:hover, .footer-bottom a:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-brand p { margin-top: 20px; max-width: 22em; line-height: 1.8; }
.footer-bottom { border-top: 1px solid var(--rule-dark); padding: 24px 0 40px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-size: 12px; }
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .footer-cols { grid-template-columns: 1fr 1fr; } }

/* ---------- Motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }
.draw path.flow, .draw line.flow { stroke-dasharray: 600; stroke-dashoffset: 600; transition: stroke-dashoffset 1.8s ease; }
.draw.is-visible path.flow, .draw.is-visible line.flow { stroke-dashoffset: 0; }
.no-js .draw path.flow, .no-js .draw line.flow { stroke-dashoffset: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
  .draw path.flow, .draw line.flow { stroke-dashoffset: 0; }
}

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0 !important; }
.mt-s { margin-top: 16px; } .mt-m { margin-top: 32px; } .mt-l { margin-top: 64px; } .mt-xl { margin-top: 96px; }
.mb-m { margin-bottom: 32px; } .mb-l { margin-bottom: 64px; }
.max-40 { max-width: 40em; }

/* ---------- Print (company profile PDF) ---------- */
@media print {
  @page { size: A4; margin: 16mm 14mm; }
  body { font-size: 10.5pt; line-height: 1.75; color: #000; }
  .site-header, .site-footer, .nav-toggle, .cta-band, .subnav, .btn, .btn-row, .skip-link, .hero-grid-bg { display: none !important; }
  .page-hero, .on-dark, .hero { background: #fff !important; color: #000 !important; }
  .page-hero .lede, .on-dark .lede, .on-dark .muted, .on-dark .col p { color: #333 !important; }
  .breadcrumb { display: none; }
  .section { padding: 10mm 0; }
  .page-hero .wrap { padding: 0 0 6mm; }
  .wrap { max-width: none; padding: 0; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .person, .profile > div, .exhibit, .data-table tr, .col { break-inside: avoid; }
  h2 { break-after: avoid; }
  a { text-decoration: none; }
  .print-break { break-before: page; }
  .bg-mist { background: #fff !important; }
  .split, .split.rev { grid-template-columns: 4fr 8fr !important; gap: 8mm; }
  .grid-2 { grid-template-columns: 1fr 1fr !important; gap: 8mm; }
  .grid-3 { grid-template-columns: repeat(3, 1fr) !important; gap: 6mm; }
  .person { grid-template-columns: 4fr 8fr !important; padding: 6mm 0; }
  .section-head { margin-bottom: 6mm; }
  .mt-l, .mt-xl { margin-top: 8mm; }
  .statement { font-size: 18pt; }
  h2 { font-size: 18pt; }
  .page-hero h1 { font-size: 22pt; }
  .exhibit-frame, .table-wrap { overflow: visible; }
  .data-table { min-width: 0; }
  .profile > div { grid-template-columns: 32mm 1fr !important; padding: 3mm 0; }
  .label { break-after: avoid; }
  .section-head, .split > div:first-child { break-inside: avoid; }
  #corporate .split { grid-template-columns: 1fr !important; }
  .exhibit svg { min-width: 0; }
}

/* ---------- Additions ---------- */
.plain-link { text-decoration: none; display: block; }
.plain-link:hover h3 { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.list-plain { list-style: none; margin: 0; }
.list-plain .list-item { padding: 14px 0; font-size: 16px; }
.msg-h { font-family: var(--font-serif); font-size: clamp(22px, 2.2vw, 28px); font-weight: 600; line-height: 1.6; }
html[lang="en"] .msg-h { line-height: 1.35; }
.max-20 { max-width: 20em; }
.full-h { min-height: 100vh; }
.idx.mono { font-family: var(--font-mono); font-size: 12px; display: block; margin-bottom: 8px; }
body.nav-open { overflow: hidden; }
.nw { display: inline-block; }
h1, h2, .statement, .lede { word-break: auto-phrase; }
.col .idx { font-family: var(--font-sans-en); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.cta-band .lede { color: #C9C9C4; }
.industry:first-of-type { padding-top: 0; }
.brand svg { flex-shrink: 0; }
@media (max-width: 1080px) {
  .header-actions .header-cta { display: none; }
}
@media (max-width: 620px) {
  .lede { line-height: 1.85; }
  .hero .tagline { font-size: 11px; letter-spacing: 0.14em; }
  .brand-word { font-size: 13px; letter-spacing: 0.22em; }
  .header-actions { gap: 8px; }
}
html[lang="en"] h1 { font-size: clamp(34px, 4.6vw, 62px); }
.page-hero .label, .hero .label { color: var(--steel-light); }
.table-wrap:focus-visible, .exhibit-frame:focus-visible { outline-offset: 2px; }
/* backdrop-filter creates a containing block for fixed children — disable on mobile so the menu overlay covers the viewport */
@media (max-width: 1080px) {
  .site-header { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; background: var(--dark) !important; }
}
@media (max-width: 1080px) {
  .primary-nav a.nav-mobile-cta { display: inline-flex; color: var(--dark); background: var(--paper); padding: 14px 22px; border: 0; font-size: 16px; margin-top: 32px; }
}
/* Official logos */
.brand-logo { display: block; height: 28px; width: auto; }
.product-logo { margin: 0 0 32px; line-height: 0; }
.product-logo img { height: 56px; width: auto; }
.page-hero .product-logo img { height: 64px; }
@media (max-width: 620px) { .brand-logo { height: 22px; } .product-logo img, .page-hero .product-logo img { height: 46px; } }
@media print { .product-logo img[src*="white"] { filter: invert(1) brightness(0.1); } }
/* Leadership — two Representative Directors shown as equals */
.leaders { gap: clamp(32px, 6vw, 96px); }
.leader { padding-top: 32px; border-top-color: var(--ink); }
.leader .role { font-size: 13px; color: var(--steel); letter-spacing: 0.04em; }
.leader .name { color: var(--ink); font-family: var(--font-serif); font-size: clamp(26px, 2.6vw, 34px); font-weight: 600; margin: 10px 0 4px; line-height: 1.4; }
.leader .name-en { font-family: var(--font-sans-en); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); }
.leader .bio { font-size: 16px; line-height: 1.95; color: #2A2A2A; margin-top: 24px; }
html[lang="en"] .leader .bio { line-height: 1.7; }
.leader .focus { margin-top: 24px; border-top: 1px solid var(--rule); }
.leader .focus li { padding: 12px 0; border-bottom: 1px solid var(--rule); font-size: 15px; }
.signature-pair { display: flex; flex-wrap: wrap; gap: 16px 56px; }
.signature-pair p { margin: 0; }
@media print { .leaders { grid-template-columns: 1fr 1fr !important; } }


/* ==========================================================================
   Theme v2 — light header & heroes (BCG / Palantir direction)
   ========================================================================== */
.site-header { background: var(--paper); color: var(--ink); border-bottom: 1px solid var(--rule); }
@supports (backdrop-filter: blur(8px)) { .site-header { background: rgba(255,255,255,0.92); } }
.brand { color: var(--ink); }
.primary-nav a { color: #3A3A3A; }
.primary-nav a:hover { color: var(--ink); }
.primary-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }
.lang-switch { border-color: var(--rule); }
.lang-switch a, .lang-switch span { color: var(--steel); }
.lang-switch [aria-current="true"] { color: var(--paper); background: var(--ink); }
.nav-toggle { color: var(--ink); }
.site-header :focus-visible { outline-color: var(--accent); }

.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #333333; }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-dark { background: var(--ink); color: var(--paper); }
.btn-dark:hover { background: #333333; }
.on-dark .btn-primary, .cta-band .btn-primary { background: var(--paper); color: var(--ink); }
.on-dark .btn-primary:hover, .cta-band .btn-primary:hover { background: #EAEAE6; }
.on-dark .btn-ghost, .cta-band .btn-ghost { border-color: rgba(255,255,255,0.4); color: var(--paper); }
.on-dark .btn-ghost:hover, .cta-band .btn-ghost:hover { border-color: var(--paper); background: transparent; }

.hero, .page-hero { background: var(--paper); color: var(--ink); border-bottom: 1px solid var(--rule); }
.hero .lede, .page-hero .lede { color: var(--steel); }
.hero .tagline { color: var(--steel); }
.page-hero .label, .hero .label { color: var(--steel); }
.breadcrumb, .breadcrumb a { color: var(--steel); }
.breadcrumb a:hover { color: var(--ink); }
.site-footer { border-top: 1px solid var(--rule-dark); }

@media (max-width: 1080px) {
  .site-header { background: var(--paper) !important; }
  .primary-nav { background: var(--paper); }
  .primary-nav a { border-bottom-color: var(--rule); color: var(--ink); }
  .primary-nav a[aria-current="page"] { border-bottom-color: var(--rule); color: var(--accent); }
  .primary-nav a.nav-mobile-cta { background: var(--ink); color: var(--paper); }
}
/* Patents — numbers only, set like a ledger */
.patents { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--rule); }
.patents > div { padding: 28px 24px 32px 0; }
.patents > div + div { border-left: 1px solid var(--rule); padding-left: 28px; }
.patents .k { font-family: var(--font-sans-en); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--steel); }
.patents .pn { font-family: var(--font-serif); font-size: clamp(24px, 2.6vw, 34px); font-weight: 600; margin-top: 10px; }
@media (max-width: 620px) { .patents { grid-template-columns: 1fr; } .patents > div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); } }
html[lang="ja"] .hero .tagline { font-family: var(--font-sans-ja); letter-spacing: 0.08em; font-size: 14px; color: var(--ink); }