:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #18202a;
  --muted: #66717f;
  --line: #dfe4ea;
  --accent: #1f5ea8;
  --accent-soft: #eaf2fb;
  --max: 1040px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}
a { color: var(--accent); }
a:hover { opacity: .78; }
.site-header {
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
  letter-spacing: .01em;
  white-space: nowrap;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 5px 14px;
  font-size: .92rem;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
}
.nav a[aria-current="page"] { color: var(--text); font-weight: 700; }
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px 22px 80px;
}
.hero {
  padding: 56px 0 42px;
  border-bottom: 1px solid var(--line);
}
.hero-with-photo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: center;
  gap: 48px;
}
.hero-copy { min-width: 0; }
.hero-photo-wrap {
  display: flex;
  justify-content: flex-end;
}
.hero-photo {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 14px 34px rgba(24,32,42,.12);
}
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
}
h1 {
  margin: 8px 0 14px;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 1.03;
  letter-spacing: -.045em;
}
.hero .lead {
  max-width: 760px;
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  color: var(--muted);
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.button {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--text);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  background: var(--surface);
}
.button.primary { background: var(--text); color: #fff; }
section { margin-top: 52px; }
h2 {
  margin: 0 0 18px;
  font-size: 1.65rem;
  letter-spacing: -.02em;
}
h3 { margin: 0 0 8px; font-size: 1.08rem; }
p { margin: 0 0 14px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
}
.card p, .muted { color: var(--muted); }
.tag {
  display: inline-block;
  margin: 3px 5px 3px 0;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 650;
}
.list { padding-left: 1.2rem; }
.list li { margin: 7px 0; }
.timeline {
  border-left: 2px solid var(--line);
  padding-left: 18px;
}
.timeline article { margin: 0 0 24px; }
.timeline time { color: var(--accent); font-weight: 700; font-size: .9rem; }
.page-title {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.page-title h1 { font-size: clamp(2.2rem, 6vw, 4rem); }
.page-title p { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.callout {
  padding: 18px 20px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
}
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 22px;
  color: var(--muted);
  font-size: .9rem;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
@media (max-width: 800px) {
  .header-inner { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  main { padding-top: 22px; }
  .hero { padding-top: 18px; }
  .hero-with-photo {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .hero-photo-wrap {
    justify-content: flex-start;
    order: -1;
  }
  .hero-photo {
    width: 150px;
    height: 150px;
    max-width: none;
    border-radius: 50%;
    box-shadow: 0 10px 28px rgba(24,32,42,.12);
  }
}