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

body {
  font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.7;
}

.notice-bar {
  background: #e8a020;
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

header {
  background: #1a2a4a;
  color: #fff;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.logo span {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 4px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  position: relative;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  position: absolute;
  left: 10px;
  transition: transform 0.2s, opacity 0.2s;
}

.menu-toggle::before { top: 13px; }
.menu-toggle span { top: 20px; }
.menu-toggle::after { top: 27px; }

.menu-toggle[aria-expanded="true"]::before {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::after {
  transform: translateY(-7px) rotate(-45deg);
}

nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 28px;
  font-size: 0.9rem;
  opacity: 0.85;
  transition: opacity 0.2s;
}

nav a:hover,
nav a[aria-current="page"] { opacity: 1; }

.page-hero {
  background: linear-gradient(135deg, #1a2a4a 0%, #2c4a8a 65%, #1a7a8a 100%);
  color: #fff;
  padding: 72px 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.page-hero p {
  max-width: 640px;
  margin: 0 auto;
  font-size: 0.98rem;
  opacity: 0.86;
}

footer {
  background: #1a2a4a;
  color: #aab;
  text-align: center;
  padding: 32px 40px;
  font-size: 0.85rem;
}

footer strong { color: #fff; }

footer a {
  color: #fff;
  text-decoration: none;
  opacity: 0.85;
}

@media (max-width: 720px) {
  header {
    padding: 14px 20px;
    flex-wrap: wrap;
  }

  .menu-toggle { display: block; }

  nav {
    display: none;
    width: 100%;
    padding: 8px 0 4px;
  }

  nav.is-open { display: block; }

  nav a {
    display: block;
    margin: 0;
    padding: 10px 0;
    border-top: 1px solid rgba(255,255,255,0.16);
  }

  .page-hero { padding: 54px 20px; }
  .page-hero h1 { font-size: 1.8rem; }
}