:root {
  --color-navy: #1b2a4a;
  --color-navy-dark: #131f38;
  --color-accent: #3d7dcb;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-text: #26313f;
  --color-text-light: #5b6b7c;
  --color-border: #e2e6ec;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  color: var(--color-navy);
  margin-top: 0;
}

/* Header */
.site-header {
  background-color: var(--color-navy);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.site-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: #e8edf5;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: #ffffff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: #ffffff;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  color: #ffffff;
  text-align: center;
  padding: 96px 0;
}

.hero h1 {
  color: #ffffff;
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.hero-tagline {
  color: #cdd8e8;
  font-size: 1.05rem;
  margin: 0;
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 40px;
  text-align: center;
}

/* Business list */
.business-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.business-list li {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
}

.business-list h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.business-list p {
  color: var(--color-text-light);
  margin: 0;
  font-size: 0.95rem;
}

/* Company table */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
}

.company-table th,
.company-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.company-table tr:last-child th,
.company-table tr:last-child td {
  border-bottom: none;
}

.company-table th {
  width: 140px;
  color: var(--color-text-light);
  font-weight: 600;
  background-color: var(--color-bg-alt);
}

/* Contact */
.contact-email {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Footer */
.site-footer {
  background-color: var(--color-navy-dark);
  color: #b7c2d0;
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
}

.site-footer p {
  margin: 0;
}

/* Responsive */
@media (max-width: 720px) {
  .business-list {
    grid-template-columns: 1fr;
  }

  .company-table th {
    width: 110px;
  }
}

@media (max-width: 600px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-navy);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .site-nav.is-open {
    max-height: 240px;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .site-nav li {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .site-nav a {
    display: block;
    padding: 14px 0;
  }

  .hero {
    padding: 64px 0;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .section {
    padding: 48px 0;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: auto;
  }

  .company-table th {
    border-bottom: none;
    padding-bottom: 4px;
  }

  .company-table td {
    padding-top: 4px;
  }
}