/* ============================================================
   Fieldwork — 校外学習・特別授業
============================================================ */

.fw-section {
  background: var(--white);
  padding: 64px 0 120px;
}

/* 年ラベル */
.fw-year {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 64px 0 40px;
}
.fw-year:first-child { margin-top: 0; }
.fw-year::before,
.fw-year::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(0,61,128,0.12);
}
.fw-year span {
  font-family: 'Cormorant Garamond', serif;
  font-size: 48px;
  font-weight: 300;
  color: var(--blue-dark);
  letter-spacing: 0.1em;
}

/* 記事：左画像＋右テキスト */
.fw-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  padding: 40px 0;
  border-top: 1px solid rgba(0,61,128,0.08);
}
.fw-article:first-of-type { border-top: none; }

/* 画像エリア */
.fw-article-imgs {
  display: grid;
  gap: 8px;
}
.fw-article-imgs:has(img:nth-child(2):last-child) {
  grid-template-columns: 1fr 1fr;
}
.fw-article-imgs:has(img:nth-child(3)) {
  grid-template-columns: 1fr 1fr;
}
.fw-article-imgs:has(img:nth-child(3)) img:first-child {
  grid-column: 1 / -1;
}
.fw-article-imgs img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  border-radius: 2px;
}

/* テキストエリア */
.fw-article-body { padding-top: 4px; }

.fw-date {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold-dark);
  margin-bottom: 12px;
}
.fw-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  font-weight: 400;
  color: var(--blue-dark);
  line-height: 1.7;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(245,200,0,0.3);
}
.fw-text p {
  font-size: 14px;
  font-weight: 300;
  color: var(--mid);
  line-height: 2.2;
  margin-bottom: 12px;
}
.fw-text p:last-child { margin-bottom: 0; }

/* レスポンシブ */
@media (max-width: 768px) {
  .fw-article {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .fw-year span { font-size: 36px; }
  .fw-title { font-size: 16px; }
}

/* ===== OC バナー（course-content.css と同一） ===== */
.oc-banner {
  background: var(--white);
  padding: 80px 0;
}
.oc-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  background: var(--cream);
  border: 1px solid rgba(245,200,0,0.3);
  padding: 60px 72px;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.oc-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gold);
}
.oc-inner::after {
  content: 'OC';
  position: absolute;
  right: 60px; top: 50%;
  transform: translateY(-50%);
  font-family: 'Cormorant Garamond', serif;
  font-size: 180px;
  font-weight: 300;
  color: rgba(245,200,0,0.07);
  line-height: 1;
  font-style: italic;
}
.oc-text { flex: 1; }
.oc-eyebrow {
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.oc-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 28px;
  font-weight: 300;
  color: var(--black);
  line-height: 1.6;
  margin-bottom: 12px;
}
.oc-desc {
  font-size: 13px;
  font-weight: 300;
  color: var(--mid);
  line-height: 2;
  max-width: 420px;
}
.oc-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
.btn-oc-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  background: var(--gold);
  color: var(--blue-dark);
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: all 0.3s;
  white-space: nowrap;
}
.btn-oc-primary:hover {
  background: var(--gold-dark);
  transform: translateY(-2px);
}
.btn-oc-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  border: 1px solid var(--blue-dark);
  color: var(--blue-dark);
  text-decoration: none;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: all 0.3s;
  white-space: nowrap;
}
.btn-oc-secondary:hover {
  background: var(--blue-dark);
  color: var(--white);
}
@media (max-width: 768px) {
  .oc-inner::after { display: none; }
  .oc-inner { flex-direction: column; padding: 36px 24px; gap: 28px; }
  .oc-title { font-size: 20px; }
  .oc-actions { flex-wrap: wrap; }
  .btn-oc-primary,
  .btn-oc-secondary { flex: 1; min-width: 140px; padding: 14px 16px; font-size: 11px; }
}

/* ===== 年別フローティングナビ ===== */
.fw-year-nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,61,128,0.1);
  border-radius: 32px;
  padding: 16px 10px;
  box-shadow: 0 4px 20px rgba(0,61,128,0.08);
}
.fw-year-nav-label {
  font-family: 'Outfit', sans-serif;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.fw-year-nav-link {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--mid);
  text-decoration: none;
  padding: 6px 8px;
  border-radius: 20px;
  transition: all 0.2s;
  white-space: nowrap;
}
.fw-year-nav-link:hover { color: var(--blue-dark); background: rgba(0,61,128,0.06); }
.fw-year-nav-link.active { color: var(--white); background: var(--blue-dark); }

@media (max-width: 1200px) {
  .fw-year-nav { display: none; }
}