/* 全体コンテナ */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  color: #111;
}

/* ヘッダー */
.header {
  display: grid;
  gap: 12px;
  margin: 0 0 20px;
}

.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, #10b981, #0ea5e9);
  color: #fff;
  font-weight: 600;
  font-size: 12px;
}

.header-title {
  margin: 0;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.25;
}

.header-subtitle {
  margin: 2px 0 0;
  color: #6b7280;
  font-size: clamp(14px, 2.4vw, 16px);
}

/* CTA */
.cta-sticky-wrapper {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: 18px 0 24px;
}

.cta-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 12px;
  border-radius: 14px;
  background: linear-gradient(180deg, #dff7e8, #eefcf4);
  border: 1px solid #86efac;
  color: #0f172a;
}

.cta-text {
  margin: 0;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  background: #06c755;
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 6px 18px rgba(6, 199, 85, .25);
  border: 1px solid rgba(0, 0, 0, .06);
}

/* カード共通 */
.card {
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .08);
  margin: 0 0 48px;
}

.card.yellow-gradient {
  background: linear-gradient(180deg, #ffe580, #fff7cc);
  border: 1px solid #facc15;
}

.card.blue-gradient {
  background: linear-gradient(180deg, #cfe5ff, #f4faff);
  border: 1px solid #60a5fa;
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(16, 185, 129, .12);
  color: #10b981;
  font-weight: bold;
  font-size: 12px;
}

.card-title {
  margin: 0 0 12px;
  font-size: 20px;
}

.card-list {
  margin: 10px 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.card-list li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 12px;
}

.card-list li b {
  color: #111;
}

/* Cカードのタグ */
.tag-container {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 6px 0 0;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #eef2f7;
    font-size: 12px;
}

/* 参加メンバー */
.members-box {
  margin-top: 16px;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(59, 130, 246, .08), rgba(59, 130, 246, .06));
  border: 1px solid rgba(59, 130, 246, .25);
}

.members-title {
  margin: 0 0 6px;
  color: #6b7280;
  font-size: 14px;
}

.members-text {
  margin: 0;
  font-weight: 600;
}