:root {
  --color-primary: #0a2540;
  --color-accent: #c9a961;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-text: #1a1a1a;
  --color-text-mute: #5a6577;
  --color-border: #e1e6ed;
  --color-cta: #0a2540;
  --color-cta-hover: #163556;
  --color-error: #d04545;
  --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 37, 64, 0.10);
  --radius: 4px;
  --container: 1200px;
  --transition: 0.2s ease;
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-jp);
  font-size: 16px; line-height: 1.7;
  color: var(--color-text); background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}
button { font: inherit; cursor: pointer; border: none; background: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-primary); color: #fff;
  padding: 12px 20px; z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; color: #fff; }

.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo {
  font-family: var(--font-en);
  font-size: 22px; font-weight: 700;
  color: var(--color-primary); letter-spacing: 0.04em;
}
.logo span { color: var(--color-accent); }
.nav { display: flex; gap: 32px; align-items: center; }
.nav-list { display: flex; gap: 24px; list-style: none; }
.nav-list a { font-size: 14px; font-weight: 500; color: var(--color-text); }
.nav-list a[aria-current="page"] { color: var(--color-accent); }
.lang-switch {
  display: flex; gap: 4px; font-size: 13px;
  border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden;
}
.lang-switch a { padding: 6px 12px; color: var(--color-text-mute); }
.lang-switch a.active { background: var(--color-primary); color: #fff; }
.menu-toggle {
  display: none; width: 40px; height: 40px;
  align-items: center; justify-content: center;
  flex-direction: column; gap: 4px;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--color-primary); transition: transform var(--transition);
}

@media (max-width: 980px) {
  .nav-list { display: none; }
  .menu-toggle { display: flex; }
  .nav.open .nav-list {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
  }
  .nav.open .nav-list a { padding: 12px 0; border-bottom: 1px solid var(--color-border); }
}

.hero {
  position: relative; min-height: 88vh;
  background: linear-gradient(115deg, rgba(10,37,64,0.92) 0%, rgba(10,37,64,0.72) 45%, rgba(22,53,86,0.45) 100%), url("../images/real-line.jpg") center/cover;
  color: #fff; display: flex; align-items: center; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: url("../images/hero.svg") center/cover no-repeat;
  opacity: 0.15;
}
.hero-content { position: relative; max-width: 720px; padding: 80px 24px; }
.hero-tag {
  display: inline-block; font-family: var(--font-en);
  font-size: 13px; letter-spacing: 0.2em;
  color: var(--color-accent); margin-bottom: 24px;
}
.hero h1 { font-size: clamp(32px, 5vw, 56px); font-weight: 700; line-height: 1.25; margin-bottom: 32px; }
.hero h1 small { display: block; font-size: 0.4em; font-weight: 400; letter-spacing: 0.04em; margin-top: 12px; opacity: 0.85; }
.hero p { font-size: 17px; line-height: 1.9; margin-bottom: 40px; opacity: 0.92; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 32px; font-size: 15px; font-weight: 600;
  border-radius: var(--radius); transition: all var(--transition);
  letter-spacing: 0.02em;
}
.btn-primary { background: var(--color-accent); color: var(--color-primary); }
.btn-primary:hover { background: #b8985a; color: var(--color-primary); transform: translateY(-2px); }
.btn-outline { border: 1.5px solid #fff; color: #fff; }
.btn-outline:hover { background: #fff; color: var(--color-primary); }
.btn-cta { background: var(--color-cta); color: #fff; }
.btn-cta:hover { background: var(--color-cta-hover); color: #fff; transform: translateY(-2px); }
.btn::after { content: "→"; transition: transform var(--transition); }
.btn:hover::after { transform: translateX(4px); }

.section { padding: 100px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head { text-align: center; margin-bottom: 64px; }
.section-tag {
  font-family: var(--font-en); font-size: 13px; letter-spacing: 0.25em;
  color: var(--color-accent); font-weight: 600; margin-bottom: 16px;
}
.section-title { font-size: clamp(28px, 4vw, 40px); font-weight: 700; color: var(--color-primary); margin-bottom: 16px; }
.section-sub { color: var(--color-text-mute); }

.breadcrumb {
  background: var(--color-bg-alt);
  padding: 16px 0; font-size: 13px;
  border-bottom: 1px solid var(--color-border);
}
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.breadcrumb li { color: var(--color-text-mute); }
.breadcrumb li:not(:last-child)::after { content: "›"; margin-left: 8px; opacity: 0.5; }
.breadcrumb a { color: var(--color-text-mute); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb [aria-current="page"] { color: var(--color-primary); font-weight: 500; }

.vision-grid { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.vision-card {
  background: #fff; padding: 48px 32px;
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-accent);
  transition: transform var(--transition), box-shadow var(--transition);
}
.vision-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.vision-card .label { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.2em; color: var(--color-accent); font-weight: 700; margin-bottom: 12px; }
.vision-card h3 { font-size: 22px; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; line-height: 1.4; }
.vision-card p { color: var(--color-text-mute); font-size: 15px; }

.service-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.service-card {
  background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--radius); overflow: hidden;
  transition: all var(--transition);
}
.service-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.service-card .img {
  aspect-ratio: 16 / 10; background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); font-size: 32px;
}
.service-card .body { padding: 28px; }
.service-card h3 { font-size: 18px; font-weight: 700; color: var(--color-primary); margin-bottom: 12px; }
.service-card p { color: var(--color-text-mute); font-size: 14px; line-height: 1.7; }

.stats { background: var(--color-primary); color: #fff; padding: 80px 0; }
.stats-grid { display: grid; gap: 48px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); text-align: center; }
.stat-num { font-family: var(--font-en); font-size: clamp(40px, 6vw, 64px); font-weight: 700; color: var(--color-accent); line-height: 1; margin-bottom: 12px; }
.stat-label { font-size: 14px; opacity: 0.85; }

.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: grid; grid-template-columns: 130px 100px 1fr; gap: 24px;
  padding: 24px 0; border-bottom: 1px solid var(--color-border); align-items: center;
}
.news-item:hover h4 { color: var(--color-accent); }
.news-date { font-family: var(--font-en); font-size: 14px; color: var(--color-text-mute); }
.news-cat {
  display: inline-block; font-size: 11px; letter-spacing: 0.1em;
  padding: 4px 12px; border-radius: 2px;
  background: var(--color-primary); color: #fff;
  text-align: center; font-weight: 600; width: fit-content;
}
.news-cat.media { background: var(--color-accent); color: var(--color-primary); }
.news-cat.event { background: #4a7c97; }
.news-cat.blog { background: #4a7c97; }
.news-cat.award { background: #8b5a3c; }
.news-item h4 { font-size: 16px; font-weight: 500; transition: color var(--transition); }
@media (max-width: 720px) { .news-item { grid-template-columns: 1fr; gap: 8px; } }

.cta-section {
  background: linear-gradient(135deg, #0a2540 0%, #163556 100%);
  color: #fff; text-align: center; padding: 100px 0;
}
.cta-section h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 700; margin-bottom: 16px; }
.cta-section p { opacity: 0.9; margin-bottom: 40px; }
.cta-section .hero-cta { justify-content: center; }

/* === Emblems / Awards === */
.emblems {
  padding: 60px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.emblems-head {
  text-align: center;
  font-family: var(--font-en);
  font-size: 12px; letter-spacing: 0.25em;
  color: var(--color-text-mute); font-weight: 600;
  margin-bottom: 32px;
}
.emblems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  align-items: stretch;
}
.emblem {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: all var(--transition);
}
.emblem:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.emblem .icon {
  font-size: 28px; color: var(--color-accent);
  margin-bottom: 8px; line-height: 1;
}
.emblem .label { font-size: 12px; color: var(--color-primary); font-weight: 600; line-height: 1.5; }
.emblem .year { display: block; font-size: 10px; color: var(--color-text-mute); margin-top: 4px; font-family: var(--font-en); }

/* === Projects (共同開発) === */
.projects-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.project-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.project-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.project-card .img {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #0a2540, #163556);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 48px;
}
.project-card .body { padding: 24px; }
.project-card .tag {
  font-family: var(--font-en); font-size: 11px;
  letter-spacing: 0.15em; color: var(--color-accent);
  font-weight: 600; margin-bottom: 8px;
}
.project-card h3 { font-size: 18px; color: var(--color-primary); margin-bottom: 8px; }
.project-card p { font-size: 14px; color: var(--color-text-mute); }

/* === Facility / Equipment Table === */
.equipment-section { margin: 64px 0; }
.equipment-section h3 {
  font-size: 20px; color: var(--color-primary);
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
  display: flex; align-items: center; gap: 12px;
}
.equipment-section h3::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--color-accent); border-radius: 50%;
}
.equipment-table {
  width: 100%; border-collapse: collapse; font-size: 14px;
  background: #fff; box-shadow: var(--shadow-sm); border-radius: var(--radius);
  overflow: hidden;
}
.equipment-table th, .equipment-table td {
  padding: 14px 16px; text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.equipment-table thead th {
  background: var(--color-primary); color: #fff;
  font-weight: 600; font-size: 13px;
  letter-spacing: 0.05em;
}
.equipment-table tbody tr:hover { background: var(--color-bg-alt); }
.equipment-table .qty { text-align: center; width: 60px; font-weight: 600; color: var(--color-accent); }
@media (max-width: 720px) {
  .equipment-table { font-size: 13px; }
  .equipment-table th, .equipment-table td { padding: 10px 8px; }
}

/* === Skill engineers === */
.skill-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin: 32px 0;
}
.skill-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.skill-card .num {
  font-family: var(--font-en); font-size: 40px; font-weight: 700;
  color: var(--color-primary); line-height: 1; margin-bottom: 8px;
}
.skill-card .num small { font-size: 0.5em; color: var(--color-text-mute); margin-left: 4px; }
.skill-card .title { font-size: 14px; color: var(--color-primary); font-weight: 600; }

.footer { background: #06192c; color: #cfd5dd; padding: 64px 0 24px; font-size: 14px; }
.footer-grid { display: grid; gap: 40px; grid-template-columns: 2fr 1fr 1fr 1fr; margin-bottom: 48px; }
.footer h4 { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.2em; color: var(--color-accent); font-weight: 700; margin-bottom: 16px; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; }
.footer-logo { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-logo span { color: var(--color-accent); }
.footer-addr { font-size: 13px; line-height: 1.8; opacity: 0.85; }
.footer-addr a { color: inherit; }
.footer-addr a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; opacity: 0.85; flex-wrap: wrap; gap: 16px;
}
.footer-bottom a { opacity: 0.7; }
.footer-bottom a:hover { opacity: 1; color: var(--color-accent); }
.sns-list { display: flex; gap: 12px; list-style: none; }
.sns-list a {
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.2); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.sns-list a:hover { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-primary); }
.sns-list svg { width: 16px; height: 16px; }

@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.float-cta {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  display: flex; flex-direction: column; gap: 12px;
}
.float-cta a {
  display: flex; align-items: center; gap: 8px; padding: 14px 24px;
  background: var(--color-accent); color: var(--color-primary);
  border-radius: 999px; font-weight: 700; font-size: 14px;
  box-shadow: var(--shadow-md); transition: all var(--transition);
}
.float-cta a:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(10,37,64,0.20); }
.float-cta a.secondary { background: #fff; color: var(--color-primary); }
@media (max-width: 720px) {
  .float-cta { right: 16px; bottom: 16px; }
  .float-cta a { padding: 12px 18px; font-size: 13px; }
  .float-cta a span:not(.icon) { display: none; }
}

.page-head {
  background: linear-gradient(135deg, rgba(10,37,64,0.90) 0%, rgba(22,53,86,0.72) 100%), url("../images/hero-machining.jpg") center/cover;
  color: #fff; padding: 120px 0 80px; text-align: center;
}
.page-head .tag { font-family: var(--font-en); font-size: 13px; letter-spacing: 0.25em; color: var(--color-accent); font-weight: 600; margin-bottom: 16px; }
.page-head h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; }

.recruit-table { width: 100%; border-collapse: collapse; margin: 32px 0; }
.recruit-table th, .recruit-table td {
  padding: 20px 16px; border-bottom: 1px solid var(--color-border);
  text-align: left; font-size: 15px;
}
.recruit-table th { background: var(--color-bg-alt); width: 200px; font-weight: 600; color: var(--color-primary); }
@media (max-width: 720px) {
  .recruit-table th, .recruit-table td { display: block; width: 100%; padding: 12px; }
  .recruit-table th { border-bottom: none; }
}
.benefit-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 32px 0; }
.benefit-card {
  background: var(--color-bg-alt); padding: 24px; border-radius: var(--radius);
  border-left: 3px solid var(--color-accent);
}
.benefit-card h4 { color: var(--color-primary); margin-bottom: 8px; font-size: 16px; }
.benefit-card p { font-size: 14px; color: var(--color-text-mute); }

.form { max-width: 720px; margin: 0 auto; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--color-primary); }
.form-group label .required { color: var(--color-error); margin-left: 4px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 14px 16px;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  font: inherit; background: #fff; transition: border var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.2);
}
.form-group textarea { min-height: 160px; resize: vertical; }
.form-group .error { display: block; color: var(--color-error); font-size: 13px; margin-top: 6px; min-height: 18px; }
.form-honeypot { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }
.mb-32 { margin-bottom: 32px; }
.lead { font-size: 18px; line-height: 1.9; color: var(--color-text-mute); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.8s, transform 0.8s; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* === Works (加工事例) === */
.works-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.work-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex; flex-direction: column;
}
.work-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--color-accent); }
.work-img { aspect-ratio: 4 / 3; background: var(--color-bg-alt); overflow: hidden; }
.work-img img { width: 100%; height: 100%; object-fit: cover; }
.work-img--placeholder {
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0a2540, #163556);
}
.work-img--placeholder span {
  font-family: var(--font-en); font-size: 13px; letter-spacing: 0.15em;
  color: var(--color-accent); font-weight: 600;
}
.work-body { padding: 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.work-body .tag {
  font-family: var(--font-en); font-size: 11px;
  letter-spacing: 0.15em; color: var(--color-accent); font-weight: 600;
}
.work-body h3 { font-size: 18px; color: var(--color-primary); line-height: 1.4; }
.work-spec { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.work-spec th, .work-spec td {
  text-align: left; vertical-align: top;
  padding: 7px 0; border-bottom: 1px solid var(--color-border);
}
.work-spec th {
  width: 86px; white-space: nowrap; color: var(--color-text-mute);
  font-weight: 600; padding-right: 12px;
}
.work-spec td { color: var(--color-text); }
.work-comment { font-size: 14px; color: var(--color-text-mute); line-height: 1.7; margin-top: 4px; }