:root {
  --bg:       #0d0d0f;
  --bg2:      #141418;
  --bg3:      #1c1c22;
  --border:   #2a2a35;
  --gold:     #c9a84c;
  --gold-dim: #7a6030;
  --text:     #e8e4dc;
  --text-dim: #8a8480;
  --accent:   #e8c96a;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Serif JP', serif;
  line-height: 1.8;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ヘッダー */
header {
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 200;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0.5rem 0;
  gap: 0.25rem;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-logo {
  font-family: 'Zen Antique Soft', serif;
  font-size: 0.95rem;
  color: var(--gold);
  text-decoration: none;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

/* デスクトップナビ（2段） */
.nav-desktop {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1rem;
  width: 100%;
}

.nav-desktop a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.73rem;
  letter-spacing: 0.03em;
  transition: color 0.2s;
  white-space: nowrap;
  line-height: 1.8;
}

.nav-desktop a:hover,
.nav-desktop a.active { color: var(--accent); }

/* ハンバーガーボタン */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
  z-index: 300;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dim);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ドロワーナビ */
.nav-drawer {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(13,13,15,0.97);
  z-index: 150;
  flex-direction: column;
  padding: 1.5rem 2rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.nav-drawer.open { transform: translateX(0); }

.nav-drawer a {
  color: var(--text);
  text-decoration: none;
  font-family: 'Zen Antique Soft', serif;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s;
}

.nav-drawer a::after { content: '→'; font-size: 0.85rem; color: var(--gold-dim); }
.nav-drawer a:hover,
.nav-drawer a.active { color: var(--gold); }
.nav-drawer a.active::after { color: var(--gold); }

/* レスポンシブ切替 */
@media (max-width: 700px) {
  .nav-desktop { display: none; }
  .hamburger   { display: flex; }
  .nav-drawer  { display: flex; }
}

/* パンくず */
.breadcrumb {
  max-width: 900px;
  margin: 0 auto;
  padding: 0.8rem 1.5rem 0;
  font-size: 0.72rem;
  color: var(--text-dim);
}

.breadcrumb a { color: var(--text-dim); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { margin: 0 0.4rem; }

/* ページヘッダー */
.page-header {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2rem;
}

.page-eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.page-header h1 {
  font-family: 'Zen Antique Soft', serif;
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  line-height: 1.5;
  margin-bottom: 0.8rem;
}

.page-header h1 em { font-style: normal; color: var(--gold); }

.page-lead {
  font-size: 0.86rem;
  color: var(--text-dim);
  line-height: 1.9;
  max-width: 620px;
}

.page-divider {
  max-width: 900px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--border);
}

/* セクション */
.section { max-width: 900px; margin: 0 auto; padding: 2rem 1.5rem; }

.section-label {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* レポートカード */
.report-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.report-card {
  background: var(--bg2);
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  display: block;
  transition: background 0.2s;
  position: relative;
}

.report-card:hover { background: var(--bg3); }

.report-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.report-date { font-size: 0.68rem; color: var(--gold-dim); letter-spacing: 0.05em; }

.report-badge {
  font-size: 0.62rem;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--gold-dim);
  color: var(--gold-dim);
  letter-spacing: 0.05em;
}

.report-title {
  font-family: 'Zen Antique Soft', serif;
  font-size: 0.98rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  padding-right: 1.8rem;
  line-height: 1.55;
}

.report-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 0.7rem;
}

.report-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-size: 0.65rem;
  padding: 0.1rem 0.5rem;
  background: var(--bg3);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.report-arrow {
  position: absolute;
  right: 1.2rem;
  top: 1.4rem;
  color: var(--gold-dim);
  font-size: 0.85rem;
  transition: right 0.2s, color 0.2s;
}

.report-card:hover .report-arrow { right: 0.9rem; color: var(--gold); }

/* 案内ボックス */
.info-box {
  border: 1px solid var(--border);
  background: var(--bg2);
  padding: 1.2rem 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.info-box p { font-size: 0.82rem; color: var(--text-dim); }

/* ボタン */
.btn {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.2s;
  font-family: 'Noto Serif JP', serif;
  white-space: nowrap;
}

.btn-primary { background: var(--gold); color: #0d0d0f; font-weight: 700; }
.btn-primary:hover { background: var(--accent); }
.btn-outline { border: 1px solid var(--border); color: var(--text-dim); }
.btn-outline:hover { border-color: var(--gold-dim); color: var(--text); }

/* エリア補足 */
.area-note {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 2rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  line-height: 1.8;
}

/* フッター */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg2);
  padding: 2rem 1.5rem;
  text-align: center;
  margin-top: 2rem;
}

.footer-inner { max-width: 900px; margin: 0 auto; }
.footer-logo { font-family: 'Zen Antique Soft', serif; font-size: 0.88rem; color: var(--gold-dim); margin-bottom: 0.8rem; }

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer-nav a { font-size: 0.72rem; color: var(--text-dim); text-decoration: none; transition: color 0.2s; }
.footer-nav a:hover { color: var(--gold); }
.footer-copy { font-size: 0.66rem; color: var(--border); letter-spacing: 0.05em; }

/* アニメーション */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-header { animation: fadeUp 0.6s ease both; }
.report-list { animation: fadeUp 0.6s 0.1s ease both; }

/* スマホ追加調整 */
@media (max-width: 480px) {
  .info-box { flex-direction: column; align-items: flex-start; }
  .page-header { padding: 1.8rem 1.2rem 1.5rem; }
  .section { padding: 1.5rem 1.2rem; }
  .report-card { padding: 1.2rem; }
}