:root {
  --ink: #16202c;
  --ink-soft: #4a5766;
  --line: #dfe4ea;
  --bg: #ffffff;
  --bg-alt: #f5f7f9;
  --accent: #1f5f8b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.wordmark { font-weight: 700; font-size: 20px; letter-spacing: 0.14em; color: var(--ink); text-decoration: none; }
.nav { display: flex; gap: 24px; flex-wrap: wrap; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--accent); }

.hero { padding: 96px 0 88px; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 20px; font-size: 14px; letter-spacing: 0.08em; color: var(--accent); font-weight: 600; }
h1 { margin: 0 0 28px; font-size: clamp(28px, 5vw, 44px); line-height: 1.5; font-weight: 700; letter-spacing: 0.02em; }
.lead { margin: 0; max-width: 640px; color: var(--ink-soft); font-size: 17px; }

.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { margin: 0 0 40px; font-size: 24px; letter-spacing: 0.06em; font-weight: 700; }
h2::after { content: ""; display: block; width: 40px; height: 3px; background: var(--accent); margin-top: 14px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { border: 1px solid var(--line); border-radius: 6px; padding: 28px 24px 26px; background: var(--bg); }
.card-num { margin: 0 0 10px; color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 0.1em; }
.card h3 { margin: 0 0 12px; font-size: 18px; line-height: 1.6; }
.card p:last-child { margin: 0; color: var(--ink-soft); font-size: 15px; }

.profile { margin: 0; border-top: 1px solid var(--line); }
.profile > div { display: grid; grid-template-columns: 180px 1fr; gap: 16px; padding: 20px 4px; border-bottom: 1px solid var(--line); }
.profile dt { font-weight: 600; color: var(--ink-soft); }
.profile dd { margin: 0; }

.mail { font-size: 20px; font-weight: 600; margin: 8px 0 12px; }
.note { color: var(--ink-soft); font-size: 14px; margin: 0; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.footer-inner small { color: var(--ink-soft); }

.doc { padding: 64px 0 80px; }
.doc h1 { font-size: clamp(24px, 4vw, 32px); margin-bottom: 24px; }
.doc h2 { font-size: 18px; margin: 40px 0 12px; }
.doc h2::after { display: none; }
.doc ul { padding-left: 1.3em; margin: 0; }
.doc .back { margin-top: 48px; }

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .nav { gap: 14px; }
  .nav a { font-size: 13px; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 56px 0; }
  .cards { grid-template-columns: 1fr; }
  .profile > div { grid-template-columns: 1fr; gap: 4px; padding: 16px 2px; }
}