* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #101b27;
  color: #f5f5f5;
  font-family: "Arial", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 6%;
  border-bottom: 1px solid #354353;
}

.logo {
  font-weight: bold;
  letter-spacing: 2px;
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
}

.hero {
  padding: 110px 8%;
  background: linear-gradient(135deg, #182d42, #101b27);
}

.eyebrow {
  color: #c7a46a;
  font-size: 13px;
  letter-spacing: 3px;
}

h1 {
  font-size: clamp(32px, 5vw, 60px);
  line-height: 1.4;
}

.lead {
  max-width: 560px;
  color: #c6ced7;
}

.button {
  display: inline-block;
  margin-top: 30px;
  padding: 14px 32px;
  background: #c7a46a;
  color: #101b27;
  text-decoration: none;
  font-weight: bold;
}

.section {
  padding: 80px 8%;
}

h2 {
  font-size: 32px;
}

.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.service {
  padding: 32px;
  background: #1c2c3c;
  border: 1px solid #354353;
}

.contact {
  background: #182d42;
}

footer {
  padding: 30px;
  text-align: center;
  color: #aab6c2;
  font-size: 12px;
}

@media (max-width: 640px) {
  .header {
    flex-direction: column;
    gap: 16px;
  }

  .hero {
    padding: 80px 6%;
  }

  .section {
    padding: 60px 6%;
  }

  .services {
    grid-template-columns: 1fr;
  }
}