@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;600&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0f2748;
  --navy2: #1a3a66;
  --teal: #1a8f78;
  --teal2: #22b89a;
  --teal-light: #e8f7f4;
  --gold: #c8952a;
  --gray-bg: #f5f6f8;
  --gray: #6b7280;
  --gray2: #9ca3af;
  --text: #1a202c;
  --border: #e5e8ed;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background: #fff;
  font-size: 15px;
  line-height: 1.8;
}

h1, h2, h3 { font-family: 'Noto Serif JP', serif; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ===== NAVIGATION ===== */
.nav {
  background: var(--navy);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.nav-logo {
  font-family: 'Noto Serif JP', serif;
  color: #fff;
  font-size: 17px;
  letter-spacing: 0.03em;
  line-height: 1.3;
}
.nav-logo span { color: var(--teal2); }
.nav-logo small { display: block; font-size: 10px; opacity: 0.6; font-family: 'Noto Sans JP', sans-serif; font-weight: 300; letter-spacing: 0.08em; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  padding: 4px 0;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a.active { border-bottom: 2px solid var(--teal2); }
.nav-cta {
  background: var(--teal);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 13px !important;
  transition: background 0.2s !important;
  border: none !important;
}
.nav-cta:hover { background: var(--teal2) !important; }

/* ===== FOOTER ===== */
.footer {
  background: #0a1929;
  padding: 40px 40px 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  font-family: 'Noto Serif JP', serif;
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
}
.footer-logo span { color: var(--teal2); }
.footer-desc { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.8; }
.footer-col h4 { font-size: 13px; color: rgba(255,255,255,0.7); font-weight: 500; margin-bottom: 14px; font-family: 'Noto Sans JP', sans-serif; }
.footer-col a { display: block; font-size: 13px; color: rgba(255,255,255,0.45); margin-bottom: 8px; transition: color 0.2s; }
.footer-col a:hover { color: rgba(255,255,255,0.8); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* ===== COMMON SECTIONS ===== */
.section { padding: 72px 40px; max-width: 960px; margin: 0 auto; }
.section-wide { padding: 72px 40px; }
.section-alt { background: var(--gray-bg); }
.section-navy { background: var(--navy); }

.section-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title {
  font-size: 26px;
  color: var(--navy);
  line-height: 1.5;
  margin-bottom: 14px;
}
.section-title-white { color: #fff; }
.section-desc { color: var(--gray); line-height: 1.9; max-width: 580px; }
.divider { width: 40px; height: 3px; background: var(--teal); margin: 16px 0 32px; }
.divider-white { background: rgba(255,255,255,0.4); }

/* ===== BUTTONS ===== */
.btn { display: inline-block; padding: 13px 28px; border-radius: 4px; font-size: 15px; font-weight: 500; cursor: pointer; transition: all 0.2s; font-family: 'Noto Sans JP', sans-serif; }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal2); }
.btn-outline-white { border: 1.5px solid rgba(255,255,255,0.5); color: #fff; }
.btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn-outline-navy { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-outline-navy:hover { background: var(--navy); color: #fff; }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 100%);
  padding: 56px 40px;
  text-align: center;
}
.page-hero h1 { font-size: 28px; color: #fff; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 15px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .nav { padding: 0 20px; }
  .nav-links { display: none; }
  .section, .section-wide { padding: 48px 20px; }
  .footer { padding: 32px 20px 20px; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .page-hero { padding: 40px 20px; }
  .page-hero h1 { font-size: 22px; }
}