:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --text: #1f2933;
  --text-light: #6b7280;
  --bg-light: #f8f9fc;
  --border: #e5e7eb;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  line-height: 1.8;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--primary);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--primary);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #eef0ff 0%, #f8f9fc 60%);
  padding: 120px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 14px 36px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.2s;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: var(--primary);
}

.btn-light:hover {
  background: #f0f0ff;
  color: var(--primary-dark);
}

/* Section title */
.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 56px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-title span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Business */
.business {
  padding: 100px 0;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.business-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.business-card:hover {
  box-shadow: 0 12px 32px rgba(79, 70, 229, 0.12);
  transform: translateY(-4px);
}

.business-card .icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.business-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* About */
.about {
  background: var(--bg-light);
  padding: 100px 0;
}

.about-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.about-table th,
.about-table td {
  padding: 22px 32px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

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

.about-table th {
  width: 180px;
  color: var(--text-light);
  font-weight: 600;
  background: #fafbff;
}

/* Contact */
.contact {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 100px 0;
  text-align: center;
}

.contact .section-title {
  color: #fff;
}

.contact .section-title span {
  color: #c7d2fe;
}

.contact p {
  color: #e0e7ff;
  margin-bottom: 32px;
}

/* Footer */
.footer {
  padding: 32px 0;
  text-align: center;
  color: var(--text-light);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 640px) {
  .nav {
    display: none;
  }
  .hero {
    padding: 80px 0;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .business-grid {
    grid-template-columns: 1fr;
  }
  .about-table th,
  .about-table td {
    display: block;
    width: 100%;
  }
  .about-table th {
    padding-bottom: 4px;
  }
  .about-table td {
    padding-top: 4px;
  }
  .pc-only {
    display: none;
  }
}