* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: #111;
  background: #fff;
  line-height: 1.9;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 20;
  padding: 18px 6vw;
  min-height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo img {
  display: block;
  width: 140px;
  height: auto;
}

.nav {
  display: flex;
  gap: 32px;
  font-size: 12px;
  letter-spacing: .16em;
}

.nav a {
  transition: opacity .25s ease;
}

.nav a:hover {
  opacity: .55;
}

.hero {
  min-height: 100vh;
  padding: 160px 8vw 80px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg,
      rgba(0, 0, 0, .78) 0%,
      rgba(0, 0, 0, .58) 30%,
      rgba(0, 0, 0, .18) 55%,
      rgba(0, 0, 0, 0) 100%),
    linear-gradient(180deg,
      rgba(0, 0, 0, .18) 0%,
      rgba(0, 0, 0, 0) 35%),
    url("/images/header.jpg") center / cover no-repeat;
  color: #fff;
}

.hero-inner {
  max-width: 900px;
}

.hero-en {
  font-size: clamp(34px, 4vw, 86px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: .02em;
  margin: 0 0 32px;
  color: #ffffce;
  text-shadow: 0 3px 18px rgba(0, 0, 0, .65);
}

.hero-en span {
  color: #fff;
  font-size: 1.2em;
  font-weight: 800;
  text-shadow:
    0 0 18px rgba(255, 255, 255, .5),
    0 3px 18px rgba(0, 0, 0, .7);
}

.hero-copy {
  font-size: clamp(22px, 3vw, 42px);
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 24px;
  text-shadow: 0 3px 16px rgba(0, 0, 0, .65);
}

.hero-text {
  max-width: 620px;
  font-size: 16px;
  text-shadow: 0 3px 16px rgba(0, 0, 0, .65);
}

.section {
  padding: 140px 8vw;
  border-bottom: 1px solid #eee;
}

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.section-head {
  margin-bottom: 56px;
}

.section-en {
  display: block;
  font-size: clamp(48px, 8vw, 110px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: #111;
}

.section-ja {
  display: block;
  margin-top: 16px;
  font-size: 15px;
  letter-spacing: .18em;
  color: #777;
}

.lead {
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 600;
  line-height: 1.7;
  margin: 0 0 32px;
}

.text {
  max-width: 760px;
  color: #444;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.business-card {
  padding: 36px;
  background: #f7f7f7;
  min-height: 260px;
}

.business-card span {
  display: block;
  font-size: 13px;
  color: #999;
  margin-bottom: 24px;
}

.business-card h3 {
  font-size: 22px;
  margin: 0 0 18px;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  padding: 24px 0;
  border-bottom: 1px solid #ddd;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 220px;
  font-weight: 600;
}

.contact-box {
  padding: 64px;
  background: #111;
  color: #fff;
}

.contact-button {
  display: inline-block;
  margin-top: 32px;
  padding: 16px 44px;
  border: 1px solid #fff;
  border-radius: 999px;
  transition: .3s;
}

.contact-button:hover {
  background: #fff;
  color: #111;
}

.footer {
  padding: 48px 8vw;
  font-size: 12px;
  color: #777;
}

.slide-up {
  opacity: 0;
  transform: translateY(70px);
  transition: opacity .9s ease, transform .9s ease;
}

.slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 800px) {
  .site-header {
    padding: 14px 6vw;
    min-height: 60px;
  }

  .logo img {
    width: 120px;
  }

  .nav {
    display: none;
  }

  .hero {
    padding: 130px 6vw 70px;
    #background:
      linear-gradient(90deg,
        rgba(0, 0, 0, .78) 0%,
        rgba(0, 0, 0, .48) 60%,
        rgba(0, 0, 0, .18) 100%),
      linear-gradient(180deg,
        rgba(0, 0, 0, .18) 0%,
        rgba(0, 0, 0, 0) 35%),
      url("header.jpg") center / cover no-repeat;
  }

  .hero-en {
    font-size: clamp(32px, 10vw, 52px);
  }

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

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
    padding: 16px 0;
  }

  .contact-box {
    padding: 40px 28px;
  }
}

.tel-box {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 28px 0;
  padding: 16px 24px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.tel-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 12px;
  border-radius: 999px;
  background: #111;
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 600;
}

.tel-link {
  color: #111;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.tel-link:hover {
  opacity: 0.65;
}

@media screen and (max-width: 600px) {
  .tel-box {
    width: 100%;
    justify-content: center;
    padding: 15px 18px;
  }

  .tel-link {
    font-size: 14px;
  }
}