:root {
  --ink: #23303f;
  --muted: #5d6875;
  --navy: #1f3a5f;
  --accent: #b8863b;
  --bg: #fbf8f3;
  --paper: #ffffff;
  --line: #e6dfd3;
  --soft: #f3ece0;
  --serif: "Noto Serif JP", serif;
  --sans: "Noto Sans JP", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.9; }
a { color: var(--navy); }
h1, h2, h3, .hero-lead, .notice { word-break: auto-phrase; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* ヘッダー */
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); }
.logo-mark { width: 40px; height: 40px; flex: none; }
.brand-name { display: block; font-family: var(--serif); font-weight: 700; font-size: 21px; line-height: 1.3; }
.brand-org { display: block; font-size: 12px; color: var(--muted); line-height: 1.4; }
.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--ink); font-size: 15px; }
.nav a:hover { color: var(--accent); }

/* トップ */
.hero { position: relative; display: flex; align-items: center; min-height: clamp(420px, 52vw, 600px); color: #fff; padding: 56px 0;
  background: #1f3a5f url("/images/hero.jpg") center right / cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,38,62,.82) 0%, rgba(20,38,62,.6) 40%, rgba(20,38,62,.08) 72%, rgba(20,38,62,0) 100%); }
.hero .wrap { position: relative; width: 100%; }
.hero-org, .hero h1, .hero-lead, .hero-text { text-shadow: 0 1px 8px rgba(0,0,0,.25); }
.hero-org { margin: 0; font-size: 14px; letter-spacing: .1em; color: #e9d9bd; }
.hero h1 { margin: 6px 0 4px; font-family: var(--serif); font-size: clamp(30px, 6vw, 46px); line-height: 1.35; }
.hero-lead { margin: 0 0 18px; font-family: var(--serif); font-size: clamp(17px, 3vw, 21px); color: #f1e3c8; }
.hero-text { margin: 0 0 26px; color: #e8edf3; font-size: 16px; }
/* 枠の幅はタイトル(h1)の幅で決め、ほかの文はその幅の中で折り返す。ボタンはその幅の中央 */
.hero-box { width: fit-content; max-width: 100%; }
.hero-box > :not(h1) { width: 0; min-width: 100%; }
.hero-btn { margin: 0; text-align: center; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 30px; border-radius: 999px; font-weight: 700; border: 0; font-size: 16px; font-family: var(--sans); cursor: pointer; }
.btn:hover { filter: brightness(1.08); }

.notice { display: block; margin: 28px 0 0; padding: 16px 20px; background: #fff7e8; border: 1px solid #ecd3a4; border-left: 5px solid var(--accent); border-radius: 6px; text-decoration: none; color: var(--ink); font-weight: 700; }
.notice-label { display: inline-block; margin-right: 10px; padding: 1px 10px; background: var(--accent); color: #fff; font-size: 12px; border-radius: 3px; vertical-align: 2px; }

.section { margin: 48px 0; }
.section-title { font-family: var(--serif); font-size: 24px; color: var(--navy); margin: 0 0 20px; padding-bottom: 8px; border-bottom: 2px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.card { display: flex; flex-direction: column; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; text-decoration: none; color: var(--ink); transition: box-shadow .2s, transform .2s; }
.card:hover { box-shadow: 0 6px 20px rgba(31,58,95,.1); transform: translateY(-2px); }
.card h3 { font-family: var(--serif); font-size: 19px; line-height: 1.55; margin: 8px 0; color: var(--navy); }
.card p { margin: 0 0 12px; font-size: 14px; color: var(--muted); line-height: 1.75; flex: 1; }
.card time { font-size: 13px; color: var(--muted); }
.cat { display: inline-block; align-self: flex-start; font-size: 12px; padding: 1px 10px; border-radius: 999px; background: var(--soft); color: #7a5a24; }
.more { text-align: right; }
.topic-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.topic-list a { display: block; padding: 16px; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; text-align: center; text-decoration: none; font-weight: 700; color: var(--navy); }
.about-box { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 28px; }
.about-box .section-title { border: 0; padding: 0; }

/* 記事・固定ページ */
.page-title { font-family: var(--serif); font-size: clamp(26px, 5vw, 32px); color: var(--navy); margin: 40px 0 24px; line-height: 1.45; }
.article { padding-top: 24px; padding-bottom: 40px; }
.article h1 { font-family: var(--serif); font-size: clamp(25px, 5vw, 32px); color: var(--navy); line-height: 1.5; margin: 10px 0 8px; }
.crumbs { font-size: 13px; color: var(--muted); margin: 0 0 12px; }
.crumbs a { color: var(--muted); }
.meta { font-size: 14px; color: var(--muted); margin: 0 0 28px; }
.prose h2 { font-family: var(--serif); font-size: 22px; color: var(--navy); margin: 44px 0 14px; padding: 6px 0 6px 14px; border-left: 5px solid var(--accent); line-height: 1.5; }
.prose h3 { font-size: 18px; margin: 30px 0 10px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 6px 0; }
.note { font-size: 14px; color: var(--muted); }
.author { margin: 48px 0 24px; padding: 20px 22px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; font-size: 15px; line-height: 1.8; }
.author p { margin: 0; }
.author-label { font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 6px !important; }
.back { margin-bottom: 40px; }
table.info { width: 100%; border-collapse: collapse; background: var(--paper); font-size: 15px; }
table.info th, table.info td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
table.info th { width: 30%; background: var(--soft); font-weight: 700; }

/* フォーム */
.contact-form { display: grid; gap: 18px; margin: 28px 0 56px; padding: 26px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; }
.contact-form label { display: grid; gap: 6px; font-weight: 700; font-size: 15px; }
.contact-form input[type=text], .contact-form input[type=email], .contact-form textarea { width: 100%; min-width: 0; padding: 10px 12px; font-size: 16px; font-family: var(--sans); border: 1px solid #cfc6b6; border-radius: 6px; background: #fff; }
.contact-form .check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.contact-form .btn { justify-self: center; padding: 12px 48px; }
.req { margin-left: 8px; font-size: 11px; color: #fff; background: #b4483b; padding: 1px 6px; border-radius: 3px; vertical-align: 2px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* フッター */
.site-footer { margin-top: 64px; background: var(--navy); color: #dfe6ee; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding-top: 36px; padding-bottom: 20px; }
.footer-inner p { margin: 0; }
.footer-name { font-family: var(--serif); font-size: 18px; color: #fff; }
.footer-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-nav a { color: #dfe6ee; }
.copy { text-align: center; margin: 0; padding: 12px 0 20px; font-size: 12px; color: #aab7c6; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav { gap: 14px; }
  .nav a { font-size: 14px; }
  .hero { display: block; min-height: 0; padding: 0; background: var(--navy); }
  .hero::before { display: none; }
  .hero::after { content: ""; display: block; height: 210px; background: url("/images/hero-sm.jpg") 72% center / cover no-repeat; position: absolute; top: 0; left: 0; right: 0; }
  .hero .wrap { padding-top: 234px; padding-bottom: 40px; }
  .about-box, .contact-form { padding: 20px; }
  table.info th { width: 34%; }
}