:root {
  --color-primary: #1b3a5c;
  --color-primary-light: #2c5a8c;
  --color-accent: #2fa8a0;
  --color-bg-alt: #f4f7f9;
  --color-text: #22303f;
  --color-text-muted: #5a6b7a;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
  color: var(--color-text);
  line-height: 1.8;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.4;
  color: var(--color-primary);
}

h2 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
}

a {
  color: var(--color-primary-light);
}

/* ヘッダー */

.site-header {
  border-bottom: 1px solid #e2e8ee;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  font-size: 1.3rem;
  font-weight: bold;
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
}

/* ヒーロー */

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  color: #fff;
  font-size: 2rem;
  margin-top: 0;
}

.hero-sub h1 {
  font-size: 1.8rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  opacity: 0.85;
  margin-bottom: 8px;
}

.hero-lead {
  font-size: 1.05rem;
  max-width: 640px;
  margin: 16px auto 32px;
  opacity: 0.95;
}

/* セクション共通 */

.section {
  padding: 64px 0;
}

.section.alt {
  background: var(--color-bg-alt);
}

.note {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ボタン */

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary-light);
}

/* プログラムカード */

.program-card {
  background: var(--color-bg-alt);
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 16px;
}

.program-card h3 {
  margin-top: 0;
  margin-bottom: 4px;
}

.program-sub {
  color: var(--color-accent);
  font-weight: bold;
  margin-top: 0;
}

/* バリューリスト */

.value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.value-list li {
  background: var(--color-bg-alt);
  padding: 24px;
  border-radius: 8px;
}

.value-list h3 {
  font-size: 1.05rem;
  margin-top: 0;
}

/* チェックリスト・テーブル */

.check-list {
  padding-left: 1.2em;
}

.check-list li {
  margin-bottom: 8px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #dde5ec;
}

.info-table th {
  width: 240px;
  color: var(--color-primary);
  font-weight: bold;
}

/* FAQ */

.faq-item {
  margin-bottom: 24px;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.faq-item p {
  margin-top: 0;
  color: var(--color-text-muted);
}

/* お問い合わせ */

.contact {
  text-align: center;
}

/* フッター */

.site-footer {
  background: var(--color-primary);
  color: #cfd9e2;
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
}

.site-footer a {
  color: #cfd9e2;
}

/* モバイル対応 */

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid #e2e8ee;
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero {
    padding: 56px 0;
  }

  .info-table th {
    width: 40%;
  }
}