:root {
  --navy: #0b2b45;
  --navy-deep: #071c2e;
  --blue-gray: #536678;
  --light: #f5f7f9;
  --line: #dce4ea;
  --text: #172433;
  --muted: #637083;
  --white: #ffffff;
  --accent: #9fb4c6;
  --shadow: 0 22px 70px rgba(7, 28, 46, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.9;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 52px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 228, 234, 0.7);
}

.brand {
  display: flex;
  align-items: center;
  height: 100%;
}
.brand-logo {
  display: block;
  width: auto;
  height: 68px;
}
.global-nav { display: flex; gap: 28px; align-items: center; font-size: 14px; font-weight: 600; color: var(--navy); }
.global-nav a { opacity: .82; transition: opacity .2s ease; }
.global-nav a:hover { opacity: 1; }
.nav-contact { border: 1px solid var(--navy); padding: 10px 18px; border-radius: 999px; }

.hero {
  min-height: 760px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 150px 52px 88px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 35%, rgba(255,255,255,.2) 70%), url("assets/hero.jpg?v=20260615-no-text") center / cover no-repeat;
  transform: scale(1.02);
}

.hero-inner { position: relative; max-width: 1180px; margin: 0 auto; width: 100%; }
.eyebrow, .section-label {
  margin: 0 0 18px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue-gray);
  font-size: 12px;
  font-weight: 700;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  color: var(--navy-deep);
  font-size: clamp(44px, 7vw, 88px);
  line-height: 1.15;
  letter-spacing: .04em;
  margin-bottom: 28px;
}
.hero-lead { max-width: 720px; font-size: 18px; color: #2b3a48; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.button-primary, .button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
}
.button-primary { color: var(--white); background: var(--navy); box-shadow: var(--shadow); }
.button-secondary { color: var(--navy); background: rgba(255,255,255,.72); border: 1px solid var(--line); }

.section { padding: 112px 52px; }
.section-light { background: var(--light); }
.section-heading { max-width: 820px; margin: 0 auto 54px; text-align: center; }
h2 { color: var(--navy-deep); font-size: clamp(32px, 4vw, 52px); line-height: 1.25; letter-spacing: .04em; margin-bottom: 18px; }
.section-heading p, .sticky-heading p { color: var(--muted); }

.cards-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.card {
  min-height: 330px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 30px 26px;
  box-shadow: 0 12px 42px rgba(7,28,46,.06);
}
.card-number { display: inline-block; color: var(--accent); font-size: 13px; font-weight: 700; margin-bottom: 18px; }
h3 { color: var(--navy); font-size: 21px; line-height: 1.45; margin-bottom: 16px; }
.card p { color: var(--muted); font-size: 15px; }

.two-column { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 0.85fr 1.35fr; gap: 78px; align-items: start; }
.sticky-heading { position: sticky; top: 120px; }
.text-stack { display: grid; gap: 22px; }
.text-stack p, .profile-card p { color: #3a4856; font-size: 16px; }
.text-stack p { padding-bottom: 22px; border-bottom: 1px solid var(--line); }

.section-dark { background: var(--navy-deep); color: var(--white); }
.section-dark h2, .section-dark .section-label { color: var(--white); }
.profile-layout {
  grid-template-columns: 1.05fr 1.15fr;
  gap: 64px;
}
.profile-layout h2 { white-space: nowrap; }
.profile-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 30px;
  padding: 44px;
}
.profile-card p { color: rgba(255,255,255,.82); }

.contact-section { background: linear-gradient(180deg, #ffffff 0%, #f4f7f9 100%); }
.contact-box {
  max-width: 900px;
  margin: 0 auto;
  padding: 70px 52px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 34px;
  box-shadow: var(--shadow);
}
.contact-box p { color: var(--muted); }
.contact-mail {
  display: inline-block;
  margin-top: 18px;
  color: var(--navy);
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: .02em;
}

.site-footer { padding: 34px 52px; text-align: center; color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 980px) {
  .site-header { padding: 0 24px; height: 76px; }
  .brand-logo { height: 60px; }
  .global-nav { display: none; }
  .hero { min-height: 680px; padding: 120px 26px 70px; }
  .hero-bg { background: linear-gradient(180deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,.78) 55%, rgba(255,255,255,.52) 100%), url("assets/hero.jpg?v=20260615-no-text") center / cover no-repeat; }
  .section { padding: 78px 24px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .two-column { grid-template-columns: 1fr; gap: 34px; }
  .sticky-heading { position: static; }
}

@media (max-width: 640px) {
  .cards-grid { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  .contact-box { padding: 48px 22px; border-radius: 24px; }
  .profile-card { padding: 30px 24px; }
}