/* ===== FREE Newsletter Design System ===== */
/* 색상 전략: 틸(#0d9488) / 슬레이트(#475569) — PRO(보라/골드)와 명확히 구분 */

/* ── 헤더 ──────────────────────────────── */
.free-header {
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  color: #fff;
  padding: 2rem 1.5rem 1.75rem;
}
.free-header-inner {
  max-width: 760px;
  margin: 0 auto;
}
.free-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  font-weight: 700;
  background: linear-gradient(135deg, #0d9488, #14b8a6);
  color: #fff;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.free-header h1 {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}
.free-date {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin: 0;
}

/* ── 콘텐츠 래퍼 ──────────────────────── */
.free-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
}

/* ── 인트로 ────────────────────────────── */
.free-intro {
  font-size: 0.875rem;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: #f8fafc;
  border-radius: 0.75rem;
  border: 1px solid #e2e8f0;
}

/* ── 아티클 카드 ───────────────────────── */
.free-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-left: 4px solid #0d9488;
  border-radius: 0 0.75rem 0.75rem 0;
  margin-bottom: 1.25rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: box-shadow 0.2s;
}
.free-card:hover {
  box-shadow: 0 3px 12px rgba(13,148,136,0.08);
}

/* 카드 헤더 */
.free-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem 0.5rem;
  background: linear-gradient(to right, #f0fdfa, #fff);
}
.free-card-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  background: #0d9488;
  color: #fff;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
}
.free-card-header h2 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0;
  line-height: 1.5;
}

/* 메타 뱃지 */
.free-meta {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}
.free-tag {
  display: inline-block;
  padding: 0.1rem 0.45rem;
  border-radius: 9999px;
  font-size: 0.6rem;
  font-weight: 600;
  background: #f0fdfa;
  color: #0d9488;
  border: 1px solid #99f6e4;
}

/* 카드 바디 */
.free-card-body {
  padding: 0.5rem 1.25rem 1rem;
}
.free-field {
  font-size: 0.85rem;
  line-height: 1.7;
  color: #374151;
  margin-bottom: 0.35rem;
  padding-left: 0.5rem;
  border-left: 2px solid transparent;
}
.free-field b {
  color: #0f766e;
  font-weight: 700;
  margin-right: 0.35rem;
}
.free-field-highlight {
  background: linear-gradient(to right, #f0fdfa, transparent);
  border-left-color: #14b8a6;
  padding: 0.3rem 0.5rem;
  border-radius: 0 0.35rem 0.35rem 0;
}
.free-limit {
  font-size: 0.8rem;
  color: #6b7280;
  margin-top: 0.5rem;
  padding: 0.4rem 0.6rem;
  background: #fefce8;
  border-left: 3px solid #eab308;
  border-radius: 0 0.35rem 0.35rem 0;
}

/* 원문 링크 */
.free-source {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: #0d9488;
  text-decoration: none;
  margin-top: 0.5rem;
  padding: 0.3rem 0.6rem;
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: 0.4rem;
  transition: all 0.2s;
}
.free-source:hover {
  background: #ccfbf1;
  border-color: #0d9488;
}
.free-source::before {
  content: '📄';
  font-size: 0.75rem;
}

/* ── 주의사항 (안전 관련 — PRO와 동일 톤) ────── */
.free-limits-section {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin-top: 1.5rem;
}
.free-limits-section h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #92400e;
  margin: 0 0 0.5rem;
}
.free-limits-section ul {
  padding-left: 1.25rem;
  margin: 0;
}
.free-limits-section li {
  font-size: 0.8rem;
  color: #78350f;
  line-height: 1.7;
  margin-bottom: 0.35rem;
}

/* ── 디스클레이머 ──────────────────────── */
.free-disclaimer {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin-top: 1.25rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: #475569;
  text-align: center;
}
.free-disclaimer strong {
  color: #dc2626;
  font-weight: 700;
}

/* ── 일반 요소 ─────────────────────────── */
.free-hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, #e2e8f0 20%, #e2e8f0 80%, transparent);
  margin: 1.25rem 0;
}