body {
  margin: 0;
  background: #0b1120;
  color: #ffffff;
  font-family: 'Segoe UI', 'Noto Sans JP', sans-serif;
}

.navbar {
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.navbar-brand {
  letter-spacing: 1px;
}

.nav-link {
  color: rgba(255,255,255,0.75) !important;
  margin-left: 12px;
}

.nav-link:hover,
.nav-link.active {
  color: #38bdf8 !important;
}

.hero {
  min-height: 100vh;
  padding-top: 180px;
  background:
    radial-gradient(circle at top left, rgba(56,189,248,0.25), transparent 35%),
    radial-gradient(circle at bottom right, rgba(99,102,241,0.25), transparent 35%),
    #0b1120;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.hero .lead {
  color: rgba(255,255,255,0.75);
  font-size: 1.25rem;
  line-height: 1.9;
}

.tagline {
  color: #38bdf8;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.btn-main {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: white;
  border: none;
  border-radius: 50px;
  padding: 12px 32px;
  font-weight: 600;
  box-shadow: 0 0 25px rgba(56,189,248,0.35);
}

.btn-main:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(56,189,248,0.55);
}

.section {
  padding: 90px 0;
}

.section h2 {
  font-size: 2.5rem;
  font-weight: 700;
}

.sub {
  color: rgba(255,255,255,0.6);
}

.service-card {
  height: 100%;
  padding: 38px 28px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: #38bdf8;
  box-shadow: 0 0 35px rgba(56,189,248,0.25);
}

.service-card h4 {
  font-weight: 700;
  margin-bottom: 18px;
}

.service-card p {
  color: rgba(255,255,255,0.68);
  line-height: 1.8;
}

.page-header {
  padding: 160px 0 80px;
  background:
    radial-gradient(circle at top right, rgba(56,189,248,0.25), transparent 35%),
    #0b1120;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.page-header h1 {
  font-size: 3rem;
  font-weight: 800;
}

.page-header p {
  color: #38bdf8;
  letter-spacing: 2px;
}

.business-block {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 22px;
  padding: 32px;
  margin-bottom: 28px;
}

.business-block h3 {
  color: #38bdf8;
  font-weight: 700;
  margin-bottom: 16px;
}

.business-block p,
.business-block li {
  color: rgba(255,255,255,0.72);
  line-height: 1.9;
}

.company-table {
  color: white;
  background: rgba(255,255,255,0.06);
  border-radius: 20px;
  overflow: hidden;
}

.company-table th {
  width: 220px;
  color: #38bdf8;
  background: rgba(255,255,255,0.08);
  padding: 20px;
}

.company-table td {
  color: #222;
  padding: 20px;
}

.contact-box {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 22px;
  padding: 32px;
}

.form-control {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
}

.form-control:focus {
  background: rgba(255,255,255,0.1);
  color: white;
  border-color: #38bdf8;
  box-shadow: none;
}

.form-label {
  color: rgba(255,255,255,0.8);
}

footer {
  padding: 35px 0;
  background: #050816;
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
}

.site-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  margin-right: 12px;
}

.hero-logo {
  width: 160px;
  height: 160px;
  object-fit: contain;
  margin-bottom: 25px;
  filter: drop-shadow(0 0 25px rgba(56,189,248,0.45));
}

.popup-overlay {
  display: none;
  position: fixed;
  z-index: 9999;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  justify-content: center;
  align-items: center;
}

.popup-box {
  width: 90%;
  max-width: 430px;
  background: #0f172a;
  border: 1px solid rgba(56,189,248,0.35);
  border-radius: 24px;
  padding: 35px;
  box-shadow: 0 0 45px rgba(56,189,248,0.35);
  text-align: center;
}

.popup-box h3 {
  color: #38bdf8;
  font-weight: 700;
  margin-bottom: 15px;
}

.popup-box p {
  color: rgba(255,255,255,0.72);
}

.popup-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.error-msg {
  color: #ff6b6b !important;
  margin-top: 12px;
  min-height: 24px;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.6rem;
  }

  .hero {
    padding-top: 140px;
  }

  .page-header h1 {
    font-size: 2.3rem;
  }

  .company-table th {
    width: 120px;
  }
}