/* =============================
   CSS Custom Properties
   ============================= */
@font-face {
  font-family: 'myJoan';
  src: url('/jp/fonts/Joan-Regular.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Joan';
  src: url('/jp/fonts/Joan-Regular.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --color-primary: #100B55;
  --color-primary-dark: #020D26;
  --color-accent: #cc0100;
  --color-accent-dark: #b30000;
  --color-white: #ffffff;
  --color-bg-light: #F3F3F3;
  --color-text-primary: #1F2937;
  --color-text-secondary: #4B5563;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --font-display: 'Joan', serif;
  --transition-base: 0.2s ease;
  --transition-medium: 0.3s ease;
}

/* =============================
   Reset & Base
   ============================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; scrollbar-gutter: stable; }
.sp-only { display: none; }
body {
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 100vw;
}
h1, h2 { letter-spacing: 0; }
img { display: block; max-width: 100%; -webkit-user-drag: none; user-select: none; -webkit-user-select: none; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }

/* =============================
   Header
   ============================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 8px rgba(0,0,0,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 96px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  position: relative;
}
.header-logo-img { width: 164px; height: 35px; flex-shrink: 0; display: block; transition: opacity 0.3s ease; }
.header-logo-white { opacity: 0; position: relative; }
.header-logo-dark  { opacity: 1; position: absolute; top: 0; left: 0; }
.header-nav {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: flex-start;
  margin-left: 60px;
  margin-top: 12px;
}
.header-nav-link {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: 0.01em;
  padding: 10px 24px 10px 0;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-base), opacity var(--transition-base);
  white-space: nowrap;
}
.header-nav-link:hover,
.header-nav-item:hover .header-nav-link { color: var(--color-accent) !important; }
.header-nav-item.active .header-nav-link { color: var(--color-accent); }
.header-nav-chevron { display: inline-flex; align-items: center; margin-left: 2px; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-search {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 6px;
  transition: background 0.15s;
}
.header-search:hover { background: rgba(0,0,0,0.05); }
.header-search-label { white-space: nowrap; }
.header-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}
.header-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.header-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header-hamburger.open span:nth-child(2) { opacity: 0; }
.header-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================
   Mobile Nav
   ============================= */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #ffffff;
  z-index: 99;
  overflow-y: auto;
  flex-direction: column;
  padding: 88px 24px 48px;
}
.mobile-nav.open { display: flex; }
.mobile-nav-item { border-bottom: 1px solid #f3f4f6; }
.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 0;
  font-family: var(--font-jp);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}
.mobile-nav-expand-icon { transition: transform 0.2s; }
.mobile-nav-toggle.open .mobile-nav-expand-icon,
.mobile-nav-toggle.expanded .mobile-nav-expand-icon { transform: rotate(180deg); }
.mobile-nav-sub {
  display: none;
  padding: 0 0 8px;
  flex-direction: column;
  gap: 0;
}
.mobile-nav-sub.open { display: flex; }
.mobile-nav-category-label {
  font-family: var(--font-jp);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin: 12px 0 4px 16px;
  padding: 0;
  display: block;
}
.mobile-nav-sub-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0 10px 16px;
  font-family: var(--font-jp);
  font-size: 16px;
  color: var(--color-text-primary);
  border-bottom: 1px solid #f0f1f3;
  gap: 12px;
}
.mobile-nav-sub-link svg { color: var(--color-accent); flex-shrink: 0; }
.mobile-nav-sub-link--heading { font-weight: 700; color: var(--color-text-primary); border-top: 1px solid #e5e7eb; border-bottom: 1px solid #e5e7eb; margin-bottom: 4px; padding-left: 16px; }
.mobile-nav-sub-link:last-child { border-bottom: none; }

/* =============================
   Search Panel
   ============================= */
.search-panel {
  position: absolute;
  top: 72px;
  right: 96px;
  width: 400px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  padding: 24px;
  z-index: 99;
  display: none;
}
.search-panel.open { display: block; }
.search-panel-close-sp { display: none; }
.search-label {
  font-family: var(--font-jp);
  font-size: 13px;
  color: #6b7280;
  display: block;
  margin-bottom: 10px;
}
.search-input-wrap { display: flex; gap: 8px; }
.search-input {
  flex: 1;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 10px 14px;
  font-family: var(--font-jp);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--color-primary); }
.search-submit {
  background: var(--color-primary);
  border: none;
  border-radius: 8px;
  padding: 0 14px;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: background 0.15s;
}
.search-submit:hover { background: #0d094a; }

/* =============================
   Section Label
   ============================= */
.section-label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.8px;
  color: var(--color-accent);
  text-transform: uppercase;
  line-height: normal;
  margin-bottom: 8px;
}

/* =============================
   Mega Menu
   ============================= */
.mega-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 1px solid #e5e7eb;
  box-shadow: 0 8px 32px rgba(0,0,0,.1);
  z-index: 98;
  animation: megaFadeIn .18s ease;
}
@keyframes megaFadeIn {
  0%  { opacity: 0; transform: translateY(-6px); }
  to  { opacity: 1; transform: translateY(0); }
}
.mega-menu-inner {
  padding: 16px 96px 20px 320px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mega-menu-category {
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  text-decoration: none;
  display: inline-block;
}
.mega-menu-category:hover { color: var(--color-accent); }
.mega-menu-category--disabled,
.mega-menu-category--disabled:hover { color: var(--color-text-primary); cursor: default; }
.mega-menu-categories {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}
.mega-menu-category-group {
  display: flex;
  flex-direction: column;
  border-left: 1px solid #e5e7eb;
  padding-left: 48px;
}
.mega-menu-category-group:first-child { border-left: none; padding-left: 0; }
.mega-menu-category-label {
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 500;
  color: #9a9a9a;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: color .2s ease;
}
.mega-menu-category-label:hover { color: var(--color-accent); }
.mega-menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}
.mega-menu-category-group--engineering .mega-menu-list {
  grid-template-columns: repeat(2, max-content);
  column-gap: 32px;
}
.mega-menu-list li { width: max-content; }
.mega-menu-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--color-text-primary);
  text-decoration: none;
  padding: 7px 0;
  white-space: nowrap;
  transition: color .2s ease;
}
.mega-menu-link:hover { color: var(--color-accent); }
.mega-menu-arrow {
  flex-shrink: 0;
  opacity: 0;
  color: var(--color-accent);
  transition: opacity .2s ease, transform .2s ease;
}
.mega-menu-link:hover .mega-menu-arrow { opacity: 1; transform: translate(3px); }
.mega-menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 97;
}

/* =============================
   Mega Menu — Industries strip
   ============================= */
.mega-menu-industries {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px calc(-1 * 96px) -20px calc(-1 * (96px + 164px + 60px));
  padding: 20px 96px 20px calc(96px + 164px + 60px);
  background: #f7f7f7;
  flex-wrap: wrap;
}
.mega-menu-industries-label {
  font-family: var(--font-jp);
  font-size: 11px;
  font-weight: 700;
  color: #9a9a9a;
  letter-spacing: .8px;
  margin-right: 16px;
  white-space: nowrap;
}
.mega-menu-industries-link {
  font-family: var(--font-jp);
  font-size: 12px;
  font-weight: 500;
  color: #4b5563;
  text-decoration: none;
  padding: 5px 14px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid #e5e7eb;
  transition: border-color .15s, color .15s;
  white-space: nowrap;
}
.mega-menu-industries-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}