/**
 * MTC & Sam's IT — Design System v1.3
 * Shared Stylesheet for All Pages
 * 
 * Color Palette: Enterprise-cold, modern, energizing, reliable
 * Typography: IBM Plex Sans + Noto Sans JP + JetBrains Mono
 */

/* ==========================================
   1. CSS Custom Properties (Design Tokens)
   ========================================== */
:root {
  /* Primary palette */
  --color-primary: #0B162C;      /* Kachi-iro navy — headings, nav, footer */
  --color-secondary: #2D4B81;    /* Nuchi Blue — secondary elements, icon fills */
  --color-accent: #FF5A00;       /* Shisa Orange — 5 touchpoints ONLY */
  
  /* Surfaces */
  --color-canvas: #F8F9FA;       /* Off-white — hero, odd sections */
  --color-surface: #FFFFFF;      /* Pure white — cards, even sections */
  --color-footer: #0B162C;       /* Footer background */
  
  /* Text */
  --color-text: #2B3544;         /* Deep slate — body copy */
  --color-text-muted: #6B7685;   /* Secondary text — excerpts */
  --color-muted: #8B94A6;        /* Cool gray — dates, labels */
  
  /* State colors */
  --color-error: #D93025;
  --color-success: #188038;
  --color-warning: #F29900;
  --color-focus: #2D4B81;
  
  /* Typography */
  --font-sans: 'IBM Plex Sans', 'Noto Sans JP', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-jp: 'Noto Sans JP', 'IBM Plex Sans', sans-serif;
  
  /* Spacing (4px base unit) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  
  /* Layout */
  --max-width: 1280px;
  --max-width-wide: 1600px;
  --margin-desktop: 48px;
  --margin-mobile: 20px;
  --nav-height: 56px;
  
  /* Motion */
  --duration-fast: 100ms;
  --duration-normal: 150ms;
  --duration-slow: 200ms;
  --easing-default: ease;
  
  /* Z-index scale */
  --z-base: 0;
  --z-dropdown: 10;
  --z-sticky: 100;
  --z-overlay: 200;
  --z-modal: 300;
}

/* ==========================================
   2. Reset & Base Styles
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-canvas);
  overflow-x: hidden;
  min-width: 100%;
}

body.mobile-menu-open,
body.mobile-sidebar-open {
  overflow: hidden;
}

/* Japanese text styling */
[lang="ja"], .t-jp {
  font-family: var(--font-jp);
  letter-spacing: 0 !important;
}

.t-body-jp {
  font-family: var(--font-jp);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0;
}

/* ==========================================
   3. Typography Scale
   ========================================== */

/* Headlines */
.t-headline-xl {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-primary);
}

.t-headline-lg {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.t-headline-md {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.t-headline-sm {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

/* Body text */
.t-body-lg {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.65;
}

.t-body-md {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.65;
}

.t-body-sm {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Labels & Navigation (JetBrains Mono) */
.t-nav {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.t-label-lg {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.t-label-md {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.t-label-sm {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.10em;
  line-height: 1.2;
  text-transform: uppercase;
}

/* ==========================================
   4. Layout Containers
   ========================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-mobile);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--margin-desktop);
  }
}

/* Fluid container for larger screens */
@media (min-width: 1440px) {
  .container {
    max-width: var(--max-width-wide);
  }
}

@media (min-width: 1920px) {
  .container {
    max-width: calc(100% - 120px);
  }
}

.section {
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

/* Keep bordered policy/contact cards away from viewport edges on mobile. */
.mtc-security-wrapper,
.mtc-privacy-wrapper,
.mtc-csr-wrapper,
.sams-security-wrapper,
.sams-privacy-wrapper,
.sams-csr-wrapper,
.privacy-wrapper,
.contact-shell {
  padding: 0 var(--margin-mobile);
}

@media (min-width: 768px) {
  .mtc-security-wrapper,
  .mtc-privacy-wrapper,
  .mtc-csr-wrapper,
  .sams-security-wrapper,
  .sams-privacy-wrapper,
  .sams-csr-wrapper,
  .privacy-wrapper,
  .contact-shell {
    padding: 0 var(--margin-desktop);
  }
}

.mtc-security-block,
.mtc-security-enactment,
.mtc-privacy-block,
.mtc-privacy-enactment,
.mtc-csr-block,
.mtc-csr-enactment,
.sams-security-block,
.sams-security-enactment,
.sams-privacy-block,
.sams-privacy-enactment,
.sams-csr-block,
.sams-csr-enactment,
.privacy-block,
.contact-card {
  max-width: 100%;
}

/* Section backgrounds (strict alternation) */
.bg-canvas { background-color: var(--color-canvas); }
.bg-surface { background-color: var(--color-surface); }
.bg-footer { background-color: var(--color-footer); }

/* ==========================================
   5. Navigation
   ========================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  width: 100%;
  height: var(--nav-height);
  background: var(--color-surface);
  border-bottom: 1px solid rgba(139, 148, 166, 0.20);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-mobile);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .nav-inner {
    padding: 0 var(--margin-desktop);
  }
}

@media (min-width: 1440px) {
  .nav-inner {
    max-width: var(--max-width-wide);
  }
}

@media (min-width: 1920px) {
  .nav-inner {
    max-width: calc(100% - 120px);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  min-width: 0;
}

.nav-logo a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
}

.nav-logo a:hover,
.nav-logo a:focus {
  text-decoration: none;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.logo-text {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-decoration: none;
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  display: none;
}

@media (min-width: 1024px) {
  .logo-sub {
    display: block;
  }
}

.nav-links {
  display: none;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .nav-links {
    gap: 24px;
  }
}

.nav-item {
  position: relative;
}

.nav-item.has-dropdown > .nav-link {
  padding-right: 14px;
}

.nav-item.has-dropdown > .nav-link::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: translateY(-60%) rotate(45deg);
}

.nav-link {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--color-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  height: var(--nav-height);
  position: relative;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-normal) var(--easing-default),
              border-color var(--duration-normal) var(--easing-default);
}

@media (min-width: 1024px) {
  .nav-link {
    font-size: 13px;
  }
}

.nav-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent); /* Touchpoint #4: Active nav underline */
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 500;
  border-bottom-color: var(--color-accent); /* Touchpoint #4 */
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.nav-submenu {
  list-style: none;
  position: absolute;
  top: calc(100% + 1px);
  left: 0;
  width: min(320px, calc(100vw - 24px));
  max-width: calc(100vw - 24px);
  background: var(--color-surface);
  border: 1px solid rgba(139, 148, 166, 0.28);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--duration-normal) var(--easing-default),
              transform var(--duration-normal) var(--easing-default),
              visibility var(--duration-normal) var(--easing-default);
  z-index: var(--z-dropdown);
}

@media (min-width: 1024px) {
  .nav-submenu {
    width: min(360px, calc(100vw - 32px));
    max-width: calc(100vw - 32px);
  }
}

.nav-subitem {
  position: relative;
}

.nav-subitem + .nav-subitem {
  border-top: 1px solid rgba(139, 148, 166, 0.14);
}

.nav-sublink {
  display: block;
  padding: 11px 14px;
  font-family: var(--font-jp);
  font-size: 13px;
  color: var(--color-text);
  text-decoration: none;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.5;
}

.nav-sublink:hover,
.nav-sublink:focus-visible {
  color: var(--color-primary);
  background: var(--color-canvas);
  outline: none;
}

.nav-subitem.has-children > .nav-sublink {
  padding-right: 28px;
}

.nav-subitem.has-children > .nav-sublink::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: translateY(-50%) rotate(-45deg);
}

.nav-subitem > .nav-submenu {
  top: -1px;
  left: 100%;
  transform: translateX(8px);
}

.nav-item.submenu-align-right > .nav-submenu {
  left: auto;
  right: 0;
}

.nav-subitem.submenu-open-left > .nav-submenu {
  left: auto;
  right: 100%;
  transform: translateX(-8px);
}

.nav-subitem.submenu-open-left > .nav-sublink::after {
  transform: translateY(-50%) rotate(135deg);
}

.nav-item:hover > .nav-submenu,
.nav-item:focus-within > .nav-submenu,
.nav-subitem:hover > .nav-submenu,
.nav-subitem:focus-within > .nav-submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(0, 0);
}

/* EN Toggle — Touchpoint #5: Sole orange-filled element */
.lang-toggle {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 7px 16px;
  border: none;
  cursor: pointer;
  transition: opacity var(--duration-normal) var(--easing-default);
}

.lang-toggle:hover {
  opacity: 0.9;
}

.lang-toggle:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Mobile menu button */
.nav-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .nav-menu-btn {
    display: none;
  }
}

.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  max-height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  background: var(--color-surface);
  border-bottom: 1px solid rgba(139, 148, 166, 0.2);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--duration-normal) var(--easing-default),
              transform var(--duration-normal) var(--easing-default),
              visibility var(--duration-normal) var(--easing-default);
}

.mobile-menu[data-open="true"] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-menu .container {
  padding-top: var(--space-3);
  padding-bottom: var(--space-5);
}

.mobile-menu-list,
.mobile-menu-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-menu-item + .mobile-menu-item {
  border-top: 1px solid rgba(139, 148, 166, 0.14);
}

.mobile-menu-row {
  display: flex;
  align-items: stretch;
  gap: 6px;
}

.mobile-menu-link,
.mobile-menu-sublink {
  display: block;
  text-decoration: none;
  font-family: var(--font-jp);
  line-height: 1.5;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  border-radius: 8px;
}

.mobile-menu-row .mobile-menu-link,
.mobile-menu-row .mobile-menu-sublink {
  flex: 1 1 auto;
  min-width: 0;
}

.mobile-menu-link {
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 2px;
}

.mobile-menu-sublist {
  margin: 2px 0 10px;
  margin-left: 6px;
  padding-left: 10px;
  border-left: 1px solid rgba(139, 148, 166, 0.3);
}

.mobile-menu-item[data-mobile-menu-branch] > .mobile-menu-sublist,
.mobile-menu-subitem[data-mobile-menu-branch] > .mobile-menu-sublist {
  display: none;
}

.mobile-menu-item[data-mobile-menu-branch].is-open > .mobile-menu-sublist,
.mobile-menu-subitem[data-mobile-menu-branch].is-open > .mobile-menu-sublist {
  display: block;
}

.mobile-menu-subitem + .mobile-menu-subitem {
  margin-top: 1px;
}

.mobile-menu-sublink {
  font-size: 13px;
  color: var(--color-text);
  padding: 8px 2px;
}

.mobile-menu-sublist .mobile-menu-sublist {
  margin-top: 4px;
  margin-left: 8px;
  padding-left: 8px;
  border-left-color: rgba(139, 148, 166, 0.22);
}

.mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  margin: 6px 0;
  padding: 0;
  border: none;
  background: transparent;
  color: #517c4d;
  border-radius: 8px;
  cursor: pointer;
}

.mobile-menu-toggle .material-symbols-outlined {
  font-size: 20px;
  line-height: 1;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus-visible {
  background: #f1f5fb;
}

.mobile-menu-link:hover,
.mobile-menu-link:focus-visible,
.mobile-menu-sublink:hover,
.mobile-menu-sublink:focus-visible {
  color: var(--color-primary);
  background: #f1f5fb;
}

.mobile-menu-link.active,
.mobile-menu-sublink.active {
  color: var(--color-primary);
  background: transparent;
}

.mobile-lang-toggle {
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none;
  }
}

/* ==========================================
   5b. Compatibility Layer (Staging Components)
   ========================================== */
.nav-logo-home {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
}

.nav-logo-home:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.nav-menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-menu-list > .menu-item {
  position: relative;
}

.nav-menu-list .nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  height: auto;
  padding: 8px 12px;
  border-radius: 999px;
  border-bottom: none;
}

.nav-menu-list .nav-link.active,
.nav-menu-list .current-menu-item > .nav-link,
.nav-menu-list .current-menu-ancestor > .nav-link {
  background: #edf2f9;
  box-shadow: inset 0 -2px 0 var(--color-accent);
}

.nav-menu-list > .menu-item-has-children > .nav-link {
  position: relative;
  padding-right: 26px;
}

.nav-menu-list > .menu-item-has-children > .nav-link::after {
  content: '';
  position: absolute;
  right: 11px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-50%) rotate(45deg);
}

.nav-menu-list .sub-menu {
  list-style: none;
  margin: 0;
  padding: 10px 0;
  position: absolute;
  top: 100%;
  left: 0;
  width: 340px;
  max-width: calc(100vw - 24px);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(139, 148, 166, 0.28);
  border-radius: 14px;
  box-shadow: 0 24px 34px -22px rgba(11, 22, 44, 0.42), 0 12px 18px -16px rgba(11, 22, 44, 0.32);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 160ms ease, visibility 160ms ease;
  z-index: 120;
}

.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item {
  position: relative;
}

.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item + .menu-item {
  border-top: 1px solid rgba(139, 148, 166, 0.14);
}

.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item > .sub-menu {
  top: 0;
  left: 100%;
  width: 320px;
}

.nav-menu-list > .menu-item-has-children.menu-align-right > .sub-menu {
  left: auto;
  right: 0;
}

.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item-has-children.menu-open-left > .sub-menu {
  left: auto;
  right: 100%;
}

.nav-menu-list > .menu-item-has-children:hover > .sub-menu,
.nav-menu-list > .menu-item-has-children:focus-within > .sub-menu,
.nav-menu-list > .menu-item-has-children.is-menu-open > .sub-menu,
.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item-has-children:hover > .sub-menu,
.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item-has-children:focus-within > .sub-menu,
.nav-menu-list > .menu-item-has-children > .sub-menu > .menu-item-has-children.is-sub-open > .sub-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-submenu-link {
  position: relative;
  display: block;
  font-family: var(--font-jp);
  font-size: 14px;
  line-height: 1.48;
  color: var(--color-text);
  text-decoration: none;
  padding: 11px 18px;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
  transition: background-color var(--duration-normal) var(--easing-default), color var(--duration-normal) var(--easing-default);
}

.nav-submenu-link:hover,
.nav-submenu-link:focus-visible,
.nav-submenu-link.active {
  color: var(--color-primary);
  background: #eef3fa;
}

.mobile-sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 22, 44, 0.45);
  z-index: 109;
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.mobile-sidebar-backdrop[data-open="true"] {
  opacity: 1;
  visibility: visible;
}

.mobile-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(86vw, 360px);
  background: #fff;
  z-index: 110;
  box-shadow: -24px 0 42px rgba(11, 22, 44, 0.22);
  padding: 20px 20px 28px;
  transform: translateX(104%);
  transition: transform 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-sidebar[data-open="true"] {
  transform: translateX(0);
}

.mobile-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(139, 148, 166, 0.2);
}

.mobile-sidebar-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6e7885;
}

.mobile-sidebar-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(139, 148, 166, 0.35);
  border-radius: 50%;
  background: #fff;
  color: var(--color-primary);
  cursor: pointer;
}

.mobile-sidebar-nav {
  display: flex;
  flex-direction: column;
}

.mobile-sidebar .mobile-menu-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--color-text);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid rgba(139, 148, 166, 0.12);
}

.mobile-sidebar .mobile-menu-link.active {
  color: var(--color-primary);
  font-weight: 500;
}

.mobile-sidebar-widgets {
  border-top: 1px solid rgba(139, 148, 166, 0.2);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-sidebar-footer {
  margin-top: auto;
  display: flex;
  justify-content: flex-end;
}

.mtc-page-editor-content {
  max-width: 980px;
  margin: 0 auto;
  padding: 4px 0;
}

.mtc-page-editor-content > :first-child {
  margin-top: 0;
}

.mtc-page-editor-content > :last-child {
  margin-bottom: 0;
}

.mtc-page-editor-content a {
  color: var(--color-secondary);
  text-underline-offset: 2px;
}

.mtc-page-editor-content a:hover {
  color: #214f9a;
}

@media (min-width: 768px) {
  .mobile-sidebar,
  .mobile-sidebar-backdrop {
    display: none !important;
  }

  body.mobile-sidebar-open {
    overflow: auto;
  }
}

/* ==========================================
   6. Buttons
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 11px 22px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing-default);
}

.btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  background: #E4E6EA;
  color: var(--color-muted);
  cursor: not-allowed;
}

/* Primary button */
.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #1A2D52;
}

/* Outline button */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(11, 22, 44, 0.25);
}

.btn-outline:hover {
  border-color: var(--color-primary);
}

/* Ghost button */
.btn-ghost {
  height: auto;
  padding: 0;
  background: transparent;
  color: var(--color-secondary);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.btn-ghost:hover {
  color: var(--color-accent);
}

/* ==========================================
   7. Cards
   ========================================== */

/* Service Card */
.service-card {
  background: var(--color-surface);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  min-width: 0;
  box-sizing: border-box;
  position: relative;
  transition: background var(--duration-normal) var(--easing-default);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-slow) var(--easing-default);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  background: var(--color-canvas);
}

.service-card:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

/* Icon box */
.icon-box {
  width: 36px;
  height: 36px;
  background: #EEF2FA;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-box svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-secondary);
  stroke-width: 1.5;
  fill: none;
}

.svc-icon-box {
  width: 36px;
  height: 36px;
  background: #EEF2FA;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.svc-icon-box svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-secondary);
  stroke-width: 1.5;
  fill: none;
}

.svc-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.svc-desc {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* News Card */
.news-card {
  background: var(--color-surface);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  align-items: start;
  border-bottom: 1px solid rgba(139, 148, 166, 0.12);
  position: relative;
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing-default);
}

.news-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--color-accent); /* Touchpoint #3: News card hover bar */
  transition: width var(--duration-normal) var(--easing-default);
}

.news-card:hover::before {
  width: 3px;
}

.news-card:hover {
  background: #FAFBFC;
  padding-left: 27px;
}

.news-card:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.news-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-date {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--color-muted);
}

.news-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin-bottom: 5px;
}

.news-excerpt {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

@media (max-width: 767px) {
  .news-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* ==========================================
   8. Tags
   ========================================== */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  height: 22px;
  padding: 3px 8px;
  border: 1px solid;
}

/* RECRUIT tag — Touchpoint #2 */
.tag-recruit {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.tag-seminar {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.tag-news {
  color: var(--color-muted);
  border-color: rgba(139, 148, 166, 0.5);
}

.tag-technology {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

/* ==========================================
   9. Section Headers
   ========================================== */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-12);
}

/* Eyebrow — Touchpoint #1: Shisa Orange */
.section-eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

/* ==========================================
   9b. Services Grid
   ========================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: rgba(139, 148, 166, 0.2);
}

@media (max-width: 767px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 479px) {
  .service-card {
    padding: 26px 20px;
  }
}

.svc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.svc-arrow {
  margin-top: auto;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-secondary);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--duration-normal) var(--easing-default);
}

.service-card:hover .svc-arrow {
  color: var(--color-accent);
}

/* ==========================================
   9c. News Layout & Sidebar
   ========================================== */
.news-layout {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 1023px) {
  .news-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.sidebar-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(139, 148, 166, 0.2);
}

.cat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px solid rgba(139, 148, 166, 0.12);
  cursor: pointer;
}

.cat-row:hover .cat-name {
  color: var(--color-accent);
}

.cat-name {
  font-size: 13px;
  color: var(--color-text);
  transition: color var(--duration-normal) var(--easing-default);
}

.cat-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
}

/* ==========================================
   10. Footer
   ========================================== */
.footer {
  background: var(--color-footer);
  padding: var(--space-16) var(--margin-mobile) var(--space-10);
  color: #FFFFFF;
}

@media (min-width: 768px) {
  .footer {
    padding: var(--space-16) var(--margin-desktop) var(--space-10);
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--max-width);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
  }
}

@media (min-width: 1440px) {
  .footer-grid {
    max-width: var(--max-width-wide);
  }
}

@media (min-width: 1920px) {
  .footer-grid {
    max-width: calc(100% - 120px);
  }
}

.footer-brand .logo-text {
  color: #FFFFFF;
  font-size: 16px;
  margin-bottom: 6px;
}

.footer-brand .tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
  width: 100%;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: 16px;
}

.footer-link {
  display: block;
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  padding: 5px 0;
  transition: color var(--duration-normal) var(--easing-default);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1440px) {
  .footer-bottom {
    max-width: var(--max-width-wide);
  }
}

@media (min-width: 1920px) {
  .footer-bottom {
    max-width: calc(100% - 120px);
  }
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.04em;
}

.footer-loc {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-loc::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-surface);
}

/* ==========================================
   11. Hero Section
   ========================================== */
.hero {
  background: var(--color-canvas);
  padding: var(--space-24) var(--margin-mobile) var(--space-20);
  border-bottom: 1px solid rgba(139, 148, 166, 0.15);
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-24) var(--margin-desktop) var(--space-20);
  }
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: minmax(260px, 400px) 1fr;
    gap: var(--space-8);
  }
  .hero-visual {
    grid-template-columns: minmax(260px, 360px) 1fr;
  }
}

@media (min-width: 1024px) {
  .hero-content {
    grid-template-columns: minmax(300px, 600px) 1fr;
    gap: var(--space-10);
  }

  .hero-visual {
    justify-self: end;
    grid-template-columns: minmax(300px, 400px) 1fr;
  }

  .hero-img-frame {
    aspect-ratio: 1 / 1;
  }
}

@media (min-width: 1440px) {
  .hero-content {
    grid-template-columns: minmax(380px, 800px) 1fr;
    max-width: var(--max-width-wide);
  }
  .hero-visual {
    grid-template-columns: minmax(380px, 600px) 1fr;
  }
}

@media (min-width: 1920px) {
  .hero-content {
    grid-template-columns: minmax(600px, 900px) 1fr;
  }
  .hero-visual {
    max-width: 700px;
  }
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent); /* Touchpoint #1 */
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-accent);
}

.hero-h1 {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.15;
  letter-spacing: 0;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-h1 em {
  font-style: normal;
  color: var(--color-secondary);
}

.hero-body {
  font-family: var(--font-jp);
  font-size: 17px;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 100%;
  margin-bottom: 36px;
  letter-spacing: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid rgba(139, 148, 166, 0.2);
}

.hero-stats .stat-item {
  min-width: 84px;
}

.stat-num {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 28px;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-top: 3px;
}

/* Hero visual */
.hero-visual {
  position: relative;
  width: 100%;
}

.hero-img-frame {
  background: linear-gradient(135deg, #E8EDF4 0%, #D4E0F0 100%);
  width: 100%;
  aspect-ratio: 1 / 1;
  position: relative;
  overflow: hidden;
  border-radius: 0px;
  box-shadow: 0 8px 32px rgba(30, 58, 138, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.hero-img-inner {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #DCE6F5 0%, #C8D8EE 100%);
}

.hero-img-inner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    linear-gradient(var(--color-primary) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-primary) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Hero Slider */
.hero-slider {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease-in-out, visibility 0.6s ease-in-out;
  z-index: 1;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.hero-slide .hero-img-inner {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #DCE6F5 0%, #C8D8EE 100%);
}

.hero-slide .hero-img-inner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.hero-slider-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.hero-slider-bar {
  width: 32px;
  height: 6px;
  border-radius: 2px;
  border: none;
  background: rgba(30, 58, 138, 0.2);
  cursor: pointer;
  padding: 0;
  transition: all 0.4s ease;
}

.hero-slider-bar:hover {
  background: rgba(30, 58, 138, 0.4);
}

.hero-slider-bar.is-active {
  width: 56px;
  background: var(--color-primary);
}

.hero-slider-bar:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (max-width: 767px) {
  .hero-slider-pagination {
    gap: 6px;
    margin-top: 12px;
  }

  .hero-slider-bar {
    width: 24px;
    height: 3px;
  }

  .hero-slider-bar.is-active {
    width: 40px;
  }
}

.hero-img-label {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 10px 16px;
}

.hero-img-label .lbl-top {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 3px;
}

.hero-img-label .lbl-main {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
}

@media (max-width: 767px) {
  .hero-stats {
    gap: 20px;
  }

  .hero-img-label {
    bottom: 16px;
    left: 16px;
    padding: 8px 12px;
  }
}

/* ==========================================
   13. Utilities
   ========================================== */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-muted); }

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard users */
:focus:not(:focus-visible) {
  outline: none;
}

/* ==========================================
   14. Language Toggle Visibility
   ========================================== */
[data-lang="ja"] [lang="en"],
[data-lang="en"] [lang="ja"] {
  display: none !important;
}

.lang-content {
  display: none !important;
}

[data-lang="ja"] .lang-en,
[data-lang="en"] .lang-ja {
  display: none !important;
}

[data-lang="ja"] .lang-ja,
[data-lang="en"] .lang-en {
  display: block !important;
}

/* For inline elements */
[data-lang="ja"] span.lang-ja,
[data-lang="en"] span.lang-en {
  display: inline !important;
}