:root {
  --blue: #0a4fa3;
  --deep-blue: #083a7a;
  --light-blue: #eaf5ff;
  --green: #56b91f;
  --text: #1b2a3a;
  --muted: #5c6b7a;
  --line: #dbe7f3;
  --bg: #f7fbff;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(8, 58, 122, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}
a { color: inherit; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: auto; }
.skip-link:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 100; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(10,79,163,.12);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand img { width: 64px; height: 64px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.3; }
.brand-name { font-weight: 800; color: var(--deep-blue); font-size: 1.15rem; letter-spacing: .05em; }
.brand-sub { color: var(--muted); font-size: .84rem; }
.nav { display: flex; gap: 10px; align-items: center; }
.nav a { text-decoration: none; padding: 9px 14px; border-radius: 999px; color: var(--deep-blue); font-weight: 700; }
.nav a:hover, .nav a[aria-current="page"] { background: var(--light-blue); }

.hero {
  background: radial-gradient(circle at 72% 20%, rgba(86,185,31,.18), transparent 32%),
              linear-gradient(135deg, #ffffff 0%, #f4fbff 48%, #e7f4ff 100%);
  border-bottom: 1px solid var(--line);
}
.hero-inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: 42px; align-items: center; padding: 72px 0; }
.eyebrow { color: var(--green); font-weight: 800; letter-spacing: .16em; font-size: .9rem; }
h1 { font-size: clamp(2rem, 4vw, 3.65rem); line-height: 1.2; margin: 10px 0 18px; color: var(--deep-blue); letter-spacing: .05em; }
.lead { font-size: 1.12rem; color: #31465a; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 18px; border-radius: 999px; text-decoration: none; font-weight: 800; border: 1px solid transparent; }
.button.primary { background: var(--blue); color: #fff; box-shadow: 0 14px 28px rgba(10,79,163,.22); }
.button.secondary { background: #fff; color: var(--deep-blue); border-color: var(--line); }
.hero-card { background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); padding: 28px; text-align: center; }
.hero-card img { width: min(100%, 430px); height: auto; display: block; margin: 0 auto; }
.hero-card p { margin: 16px 0 0; color: var(--muted); }

section { padding: 64px 0; }
.section-title { text-align: center; margin-bottom: 34px; }
.section-title h2 { color: var(--deep-blue); font-size: clamp(1.55rem, 3vw, 2.25rem); margin: 0 0 10px; }
.section-title p { margin: 0; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 26px; box-shadow: 0 12px 30px rgba(8,58,122,.07); }
.card-icon { width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; background: var(--light-blue); color: var(--blue); font-weight: 900; font-size: 1.2rem; margin-bottom: 14px; }
.card h3 { color: var(--deep-blue); margin: 0 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }

.info-band { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.info-box { padding: 28px; background: linear-gradient(135deg, #fff, #f6fbff); border: 1px solid var(--line); border-radius: 22px; }
.info-box h2 { color: var(--deep-blue); margin: 0 0 14px; }
.dl { display: grid; grid-template-columns: 8em 1fr; gap: 10px 16px; margin: 0; }
.dl dt { font-weight: 800; color: var(--deep-blue); }
.dl dd { margin: 0; color: #33485c; }

.policy { background: #fff; }
.policy-article { background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); padding: min(42px, 7vw); }
.policy-article h1 { font-size: clamp(1.8rem, 3vw, 2.7rem); }
.policy-article h2 { color: var(--deep-blue); border-left: 5px solid var(--green); padding-left: 12px; margin-top: 34px; }
.policy-article p, .policy-article li { color: #33485c; }
.policy-meta { background: var(--light-blue); border: 1px solid var(--line); border-radius: 18px; padding: 18px; margin: 24px 0; }
.policy-meta p { margin: 0; }
.notice { background: #fff8e6; border: 1px solid #f0d48a; border-radius: 18px; padding: 16px 18px; color: #625018; }

.site-footer { background: var(--deep-blue); color: #fff; padding: 34px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; flex-wrap: wrap; }
.footer-logo { display: flex; align-items: center; gap: 12px; }
.footer-logo img { width: 52px; height: 52px; object-fit: contain; background: #fff; border-radius: 12px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: #fff; text-decoration: none; opacity: .9; }
.footer-links a:hover { opacity: 1; text-decoration: underline; }
.small { font-size: .9rem; opacity: .88; margin: 4px 0 0; }

@media (max-width: 840px) {
  .hero-inner, .info-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .header-inner { align-items: flex-start; flex-direction: column; }
  .nav { width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .hero-inner { padding: 48px 0; }
  .dl { grid-template-columns: 1fr; gap: 4px; }
}