:root {
  --ink: #14323b;
  --muted: #5f747a;
  --teal: #174f87;
  --teal-deep: #103b66;
  --mint: #e5f0f7;
  --cream: #f7faf8;
  --white: #ffffff;
  --line: #dbe6e2;
  --shadow: 0 24px 60px rgba(16, 62, 67, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(780px, calc(100% - 40px)); }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--white); }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(219,230,226,.8); background: rgba(255,255,255,.92); backdrop-filter: blur(14px); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-logo { display: block; width: 190px; height: auto; }
.primary-navigation ul { display: flex; gap: 28px; margin: 0; padding: 0; list-style: none; }
.primary-navigation a { text-decoration: none; font-size: .9rem; font-weight: 600; }
.primary-navigation a:hover, .primary-navigation a:focus-visible { color: var(--teal); }
.menu-button { display: none; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; color: var(--ink); background: var(--white); }

.hero { min-height: 690px; display: grid; align-items: center; overflow: hidden; background-image: linear-gradient(90deg, rgba(248,251,253,.98) 0%, rgba(248,251,253,.94) 36%, rgba(248,251,253,.54) 58%, rgba(248,251,253,.08) 100%), url("../images/hero-background.jpg"); background-position: center; background-size: cover; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 670px); align-items: center; padding-block: 100px; }
.eyebrow { margin: 0 0 12px; color: var(--teal); font-size: .78rem; font-weight: 800; letter-spacing: .2em; }
h1, h2 { margin: 0; line-height: 1.28; letter-spacing: -.035em; }
h1 { max-width: 760px; font-size: clamp(2.4rem, 6vw, 4.75rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.65rem); }
.hero-lead, .section-copy { max-width: 680px; margin: 26px 0 34px; color: var(--muted); font-size: 1.06rem; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; border-radius: 999px; padding: 10px 26px; color: var(--white); background: var(--teal); text-decoration: none; font-weight: 700; box-shadow: 0 12px 28px rgba(10,119,111,.2); }
.button:hover, .button:focus-visible { background: var(--teal-deep); transform: translateY(-1px); }
.section { padding-block: 110px; scroll-margin-top: 75px; }
.section-muted { background: var(--cream); }
.about-section { position: relative; }
.about-copy { max-width: 760px; margin: 30px 0 0; color: var(--ink); font-size: clamp(1.08rem, 2.2vw, 1.32rem); line-height: 2; }
.business-intro { margin-bottom: 44px; }
.business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.business-card { min-height: 280px; padding: 32px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); box-shadow: 0 16px 36px rgba(16, 59, 102, .06); }
.business-card .card-number { color: var(--teal); font-size: .76rem; font-weight: 800; letter-spacing: .15em; }
.business-card h3 { margin: 24px 0 16px; font-size: 1.18rem; line-height: 1.5; }
.business-card p { margin: 0; color: var(--muted); font-size: .95rem; }
.future-section { padding-top: 0; }
.future-card { display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; align-items: center; padding: 56px 62px; border-radius: 28px; color: var(--white); background: linear-gradient(135deg, var(--teal-deep), var(--teal)); box-shadow: var(--shadow); }
.future-card .eyebrow { color: #bcd9ec; }
.future-card p:last-child { margin: 0; color: #e6f1f8; }
.company-list { margin: 42px 0 0; border-top: 1px solid var(--line); }
.company-list > div { display: grid; grid-template-columns: 160px 1fr; gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.company-list dt { font-weight: 700; }
.company-list dd { margin: 0; color: var(--muted); }
.contact-section { color: var(--white); background: var(--teal-deep); }
.contact-section .eyebrow { color: #94ded4; }
.contact-card { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.contact-card p:not(.eyebrow) { margin-bottom: 0; color: #d3e9e5; }
.button-light { flex: 0 0 auto; color: var(--teal-deep); background: var(--white); box-shadow: none; }
.button-light:hover, .button-light:focus-visible { color: var(--teal-deep); background: var(--mint); }
.setup-note { border: 1px solid rgba(255,255,255,.3); border-radius: 12px; padding: 12px 18px; }
.page-content .entry > * + * { margin-top: 1.5em; }
.page-content h1 { margin-bottom: 40px; font-size: clamp(2.25rem, 5vw, 3.75rem); }
.site-footer { padding: 58px 0 24px; color: #cde0dd; background: #102f34; }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; }
.footer-brand { margin: 0; color: var(--white); font-weight: 800; letter-spacing: .14em; }
.footer-note { margin: 8px 0 0; font-size: .9rem; }
.site-footer ul { display: flex; gap: 22px; margin: 0; padding: 0; list-style: none; }
.site-footer a { text-decoration: none; }
.copyright { margin-top: 44px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: .75rem; }

@media (max-width: 760px) {
  .shell, .narrow { width: min(100% - 28px, 680px); }
  .menu-button { display: block; }
  .brand-logo { width: 160px; }
  .primary-navigation { display: none; position: absolute; inset: 76px 0 auto; padding: 20px; border-bottom: 1px solid var(--line); background: var(--white); }
  .primary-navigation.is-open { display: block; }
  .primary-navigation ul { flex-direction: column; gap: 16px; }
  .hero { min-height: 620px; background-image: linear-gradient(90deg, rgba(248,251,253,.98) 0%, rgba(248,251,253,.90) 72%, rgba(248,251,253,.48) 100%), url("../images/hero-background.jpg"); background-position: 62% center; }
  .hero-grid { grid-template-columns: 1fr; padding-block: 76px; }
  .section { padding-block: 78px; }
  .business-grid { grid-template-columns: 1fr; }
  .business-card { min-height: auto; }
  .future-section { padding-top: 0; }
  .future-card { grid-template-columns: 1fr; gap: 24px; padding: 38px 28px; }
  .company-list > div { grid-template-columns: 1fr; gap: 4px; }
  .contact-card, .footer-inner { align-items: flex-start; flex-direction: column; }
  .site-footer ul { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* NEWS section (2026-09-07 追加) */
.news-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 116px 1fr; gap: 6px 24px; align-items: baseline; padding: 22px 4px; border-bottom: 1px solid var(--line); }
.news-date { color: var(--teal); font-size: .84rem; font-weight: 700; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.news-title { color: var(--ink); font-weight: 600; text-decoration: none; }
.news-title:hover, .news-title:focus-visible { color: var(--teal); text-decoration: underline; }
.entry-date { margin: -6px 0 28px; color: var(--muted); font-size: .84rem; letter-spacing: .08em; }
.entry-back { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); font-size: .92rem; }

@media (max-width: 760px) {
  .news-item { grid-template-columns: 1fr; gap: 4px; padding: 18px 2px; }
}