:root {
  --color-bg: #f5f7fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef2f6;
  --color-text: #16202b;
  --color-muted: #566272;
  --color-border: #cdd5df;
  --color-primary: #0d2743;
  --color-primary-soft: #173a5f;
  --color-accent: #8fa4b8;
  --color-shadow: rgba(13, 39, 67, 0.08);
  --container-width: 1180px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --transition: 180ms ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, #f8fafc 0%, #f3f6f9 48%, #eef2f6 100%);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
h1, h2, h3, p, dl, dd, dt { margin: 0; }

.container { width: min(100% - 48px, var(--container-width)); margin: 0 auto; }
.narrow { width: min(100% - 48px, 860px); }
.section { padding: 88px 0; }
.section-alt { background: linear-gradient(180deg, rgba(255,255,255,0.72) 0%, rgba(238,242,246,0.92) 100%); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-soft);
}
.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
}
.section-heading { max-width: 760px; margin-bottom: 36px; }
.section-heading h2 {
  margin-top: 16px;
  font-size: clamp(1.9rem, 3vw, 2.7rem);
  line-height: 1.3;
}
.section-heading p { margin-top: 14px; color: var(--color-muted); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(248, 250, 252, 0.88);
  border-bottom: 1px solid rgba(205, 213, 223, 0.85);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 80px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 800;
}
.site-logo-mark {
  display: grid;
  place-items: center;
  min-width: 48px;
  height: 48px;
  padding: 0 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #365778 100%);
  color: #fff;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  letter-spacing: 0.05em;
}
.site-logo-text { font-size: 1rem; }
.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.95rem;
  color: var(--color-muted);
}
.site-nav a { transition: color var(--transition); }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--color-primary); }
.nav-contact {
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.hero { padding: 72px 0 88px; overflow: hidden; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 42px;
  align-items: center;
}
.hero-content h1 {
  margin-top: 18px;
  font-size: clamp(2.4rem, 5vw, 4.3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.hero-description {
  margin-top: 22px;
  max-width: 760px;
  font-size: 1.08rem;
  color: var(--color-muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
}
.button:hover, .button:focus-visible { transform: translateY(-1px); }
.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-soft) 100%);
  box-shadow: 0 14px 30px rgba(13, 39, 67, 0.2);
}
.button-secondary {
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--color-border);
}
.hero-points { display: grid; gap: 12px; margin-top: 28px; }
.hero-points li {
  position: relative;
  padding-left: 22px;
  color: var(--color-muted);
}
.hero-points li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7f95ab 0%, var(--color-primary) 100%);
}
.hero-panel {
  padding: 24px;
  border: 1px solid rgba(205, 213, 223, 0.75);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 44px var(--color-shadow);
}
.hero-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 22px;
}
.hero-metrics {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}
.hero-metrics div {
  padding-top: 14px;
  border-top: 1px solid rgba(205, 213, 223, 0.9);
}
.hero-metrics dt {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-soft);
}
.hero-metrics dd { margin-top: 6px; color: var(--color-muted); }

.intro { padding-top: 36px; }
.section-lead {
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  line-height: 1.8;
  color: var(--color-primary);
}
.intro p + p { margin-top: 18px; color: var(--color-muted); }

.card-grid { display: grid; gap: 22px; }
.card-grid-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card, .reason-card, .issue-item, .faq-item, .flow-item, .equipment-card {
  border: 1px solid rgba(205, 213, 223, 0.9);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 30px var(--color-shadow);
}
.info-card { padding: 28px; }
.info-card h3 { font-size: 1.15rem; line-height: 1.45; }
.info-card p { margin-top: 14px; color: var(--color-muted); }

.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
.reason-card {
  position: relative;
  padding: 28px;
  overflow: hidden;
}
.reason-card::after {
  content: "";
  position: absolute;
  inset: auto -20px -20px auto;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(143, 164, 184, 0.18), transparent 68%);
}
.reason-number {
  display: inline-block;
  margin-bottom: 18px;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-size: 2rem;
  color: var(--color-accent);
}
.reason-card h3 { font-size: 1.15rem; line-height: 1.45; }
.reason-card p { margin-top: 14px; color: var(--color-muted); }

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.equipment-card {
  overflow: hidden;
}
.equipment-card-featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1.05fr);
}
.equipment-photo-wrap {
  background: #d9e1e8;
}
.equipment-photo {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}
.equipment-body { padding: 28px; }
.equipment-type {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-soft);
}
.equipment-body h3 {
  margin-top: 8px;
  font-size: 1.35rem;
  line-height: 1.35;
}
.equipment-copy {
  margin-top: 14px;
  color: var(--color-muted);
}
.spec-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--color-surface-alt);
}
.spec-list span { color: var(--color-muted); }
.spec-list strong { text-align: right; }
.spec-list.compact li { padding: 10px 12px; }
.equipment-card-accent {
  display: flex;
  align-items: stretch;
  background: linear-gradient(135deg, rgba(13, 39, 67, 0.98) 0%, rgba(22, 47, 73, 0.94) 60%, rgba(39, 67, 96, 0.92) 100%);
  border-color: rgba(13, 39, 67, 0.48);
}
.equipment-card-accent .equipment-type,
.equipment-card-accent h3,
.equipment-card-accent .equipment-copy { color: #fff; }
.equipment-card-accent .equipment-copy { color: rgba(255,255,255,0.82); }

.product-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
  gap: 28px;
  align-items: start;
}
.product-visual { position: sticky; top: 108px; }
.product-panel,
.product-list-wrap {
  padding: 32px;
  border: 1px solid rgba(205, 213, 223, 0.9);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 12px 30px var(--color-shadow);
}
.product-panel h3 {
  font-size: 1.2rem;
  margin-bottom: 18px;
}
.product-list {
  display: grid;
  gap: 14px;
}
.product-list li {
  position: relative;
  padding: 14px 18px 14px 50px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  font-weight: 500;
}
.product-list li::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 18px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 4px solid var(--color-primary-soft);
  transform: translateY(-50%);
}
.issue-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.issue-item { padding: 24px; }
.issue-item h3 { font-size: 1.05rem; line-height: 1.45; }
.issue-item p { margin-top: 12px; color: var(--color-muted); }
.product-note { margin-top: 18px; color: var(--color-muted); font-size: 0.95rem; }

.flow-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}
.flow-item {
  position: relative;
  padding: 26px 20px 24px;
}
.flow-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  font-size: 1.1rem;
}
.flow-item h3 { font-size: 1rem; line-height: 1.45; }
.flow-item p { margin-top: 10px; color: var(--color-muted); font-size: 0.95rem; }

.faq-list { display: grid; gap: 16px; }
.faq-item { padding: 26px 28px; }
.faq-item h3 {
  position: relative;
  padding-left: 38px;
  font-size: 1.08rem;
  line-height: 1.5;
}
.faq-item h3::before {
  content: "Q";
  position: absolute;
  top: -2px;
  left: 0;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 800;
}
.faq-item p { margin-top: 14px; color: var(--color-muted); }


.company-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: 24px;
  align-items: start;
}

.company-card {
  padding: 32px;
  border: 1px solid rgba(205, 213, 223, 0.9);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 30px var(--color-shadow);
}

.company-list {
  display: grid;
  gap: 0;
}

.company-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid rgba(205, 213, 223, 0.85);
}

.company-row:first-child {
  padding-top: 0;
  border-top: none;
}

.company-row dt {
  font-weight: 700;
  color: var(--color-primary);
}

.company-row dd {
  color: var(--color-muted);
}

.company-card-copy h3 {
  font-size: 1.2rem;
  line-height: 1.45;
}

.company-card-copy p {
  margin-top: 14px;
  color: var(--color-muted);
}

.contact-section { padding-top: 36px; padding-bottom: 96px; }
.contact-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 40px;
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(13, 39, 67, 0.98) 0%, rgba(22, 47, 73, 0.94) 60%, rgba(39, 67, 96, 0.92) 100%);
  box-shadow: 0 20px 48px rgba(13, 39, 67, 0.22);
}
.contact-panel .eyebrow, .contact-panel h2, .contact-panel p { color: #fff; }
.contact-panel .eyebrow::before { background: rgba(255,255,255,0.72); }
.contact-panel h2 {
  margin-top: 18px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.3;
}
.contact-panel p {
  margin-top: 14px;
  max-width: 720px;
  color: rgba(255,255,255,0.82);
}
.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 300px;
}
.contact-actions .button-primary { background: #fff; color: var(--color-primary); }
.contact-actions .button-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,0.42); }
.contact-note { font-size: 0.86rem; }

.site-footer {
  padding: 28px 0 42px;
  border-top: 1px solid rgba(205, 213, 223, 0.8);
  background: rgba(238, 242, 246, 0.65);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--color-muted);
  font-size: 0.95rem;
}
.footer-company { margin-bottom: 6px; font-weight: 800; color: var(--color-primary); }

@media (max-width: 1180px) {
  .card-grid-four,
  .reason-grid,
  .equipment-grid,
  .issue-list,
  .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .equipment-card-featured {
    grid-column: span 2;
  }
}

@media (max-width: 900px) {
  .header-inner,
  .contact-panel,
  .hero-grid,
  .product-layout,
  .equipment-card-featured {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }
  .site-header { position: static; }
  .site-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 14px 18px;
  }
  .product-visual { position: static; }
  .contact-actions { min-width: 0; }
  .flow-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .container, .narrow { width: min(100% - 32px, var(--container-width)); }
  .section { padding: 68px 0; }
  .hero { padding: 40px 0 64px; }
  .hero-content h1 { font-size: 2.1rem; }
  .card-grid-four,
  .reason-grid,
  .equipment-grid,
  .issue-list,
  .flow-list {
    grid-template-columns: 1fr;
  }
  .equipment-card-featured { grid-column: span 1; }
  .hero-panel,
  .product-panel,
  .product-list-wrap,
  .contact-panel,
  .faq-item,
  .info-card,
  .reason-card,
  .issue-item,
  .flow-item,
  .equipment-body { padding-left: 22px; padding-right: 22px; }
  .button { width: 100%; }
  .spec-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .spec-list strong { text-align: left; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}


/* iPhone Safari company section fix */
.company-card,
.company-row,
.company-row dt,
.company-row dd {
  min-width: 0;
}

.company-row dd,
.company-row dd a {
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 900px) {
  .company-grid {
    grid-template-columns: 1fr;
  }

  .company-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 640px) {
  .company-card {
    padding: 22px;
  }
}

/* ===== company section mobile fix for iPhone Safari ===== */

.company-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.company-card {
  min-width: 0;
  width: 100%;
  padding: 32px;
  border: 1px solid rgba(205, 213, 223, 0.9);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 30px rgba(13, 39, 67, 0.08);
  overflow: hidden;
}

.company-card * {
  min-width: 0;
}

.company-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.company-row + .company-row {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(205, 213, 223, 0.9);
}

.company-row dt {
  font-weight: 700;
  color: #0d2743;
}

.company-row dd {
  min-width: 0;
  color: #566272;
}

.company-row dd,
.company-row dd a,
.company-card p,
.company-card li {
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 900px) {
  .company-grid {
    grid-template-columns: 1fr;
  }

  .company-card {
    padding: 24px;
  }

  .company-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .company-row + .company-row {
    margin-top: 14px;
    padding-top: 14px;
  }
}

@media (max-width: 640px) {
  .company-card {
    padding: 22px;
    border-radius: 18px;
  }
}