/* ============================================================
   Lịch Sử Các Triều Đại Phong Kiến — Design System
   Tham khảo palette từ lo-trinh-chinh-phuc-toan.css
   ============================================================ */

.lsd-wrap {
  /* --- Palette lịch sử --- */
  --lsd-primary:       #7c1d1d;
  --lsd-primary-light: #b91c1c;
  --lsd-primary-dark:  #991b1b;
  --lsd-accent:        #dc2626;
  --lsd-gold:          #b45309;
  --lsd-gold-light:    #f59e0b;
  --lsd-text:          #1c1917;
  --lsd-text-secondary:#57534e;
  --lsd-muted:         #78716c;
  --lsd-border:        #e7c4c4;
  --lsd-border-accent: #fca5a5;
  --lsd-bg-warm:       #fff7f7;
  --lsd-bg-surface:    #fafaf9;
  --lsd-shadow-sm:     0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --lsd-shadow:        0 4px 16px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
  --lsd-shadow-lg:     0 12px 40px rgba(0,0,0,0.09), 0 4px 12px rgba(0,0,0,0.05);
  --lsd-radius:        16px;
  --lsd-radius-lg:     24px;

  /* Màu giai đoạn */
  --lsd-gd1: #7c3aed; /* tím — thời tiền sử */
  --lsd-gd2: #b45309; /* nâu vàng — Bắc thuộc */
  --lsd-gd3: #0369a1; /* xanh — độc lập ban đầu */
  --lsd-gd4: #065f46; /* xanh lá — thịnh trị */
  --lsd-gd5: #b91c1c; /* đỏ — phục hưng */
  --lsd-gd6: #1d4ed8; /* xanh dương — triều Nguyễn */

  font-size: 1rem;
  line-height: 1.7;
  color: var(--lsd-text);
}

/* ---- Transitions ---- */
.lsd-wrap .lsd-dynasty-card,
.lsd-wrap .lsd-period-card,
.lsd-wrap .lsd-faq .accordion-item,
.lsd-wrap .lsd-timeline-item {
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

/* ============================================================
   Hero
   ============================================================ */
.lsd-wrap .lsd-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  margin-bottom: 56px;
}

.lsd-wrap .lsd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--lsd-bg-warm);
  color: var(--lsd-primary);
  font-size: 0.92rem;
  font-weight: 700;
  border: 1px solid var(--lsd-border-accent);
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.lsd-wrap .lsd-hero-title {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  font-weight: 800;
  color: var(--lsd-primary);
}

.lsd-wrap .lsd-hero-desc {
  color: var(--lsd-text-secondary);
  font-size: 1.08rem;
  margin: 0 0 24px;
  line-height: 1.75;
}

.lsd-wrap .lsd-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

/* ---- Hero quick-ref (compact tài liệu row) ---- */
.lsd-wrap .lsd-hero-quick-ref {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--lsd-border);
}
.lsd-wrap .lsd-hero-quick-ref-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--lsd-heading);
  letter-spacing: 0.02em;
}
.lsd-wrap .lsd-hero-quick-ref-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.lsd-wrap .lsd-hero-quick-ref-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lsd-muted);
  white-space: nowrap;
}
.lsd-wrap .lsd-hero-quick-ref-sep {
  width: 1px;
  height: 18px;
  background: var(--lsd-border);
  margin: 0 4px;
}
.lsd-wrap .lsd-hero-quick-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s, transform 0.15s;
}
.lsd-wrap .lsd-hero-quick-chip i { font-size: 0.92rem; }
.lsd-wrap .lsd-hero-quick-chip--doc {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}
.lsd-wrap .lsd-hero-quick-chip--doc:hover {
  background: #059669;
  color: #fff;
  border-color: #059669;
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.25);
  transform: translateY(-1px);
}
.lsd-wrap .lsd-hero-quick-chip--yt {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}
.lsd-wrap .lsd-hero-quick-chip--yt:hover {
  background: #dc2626;
  color: #fff;
  border-color: #dc2626;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.25);
  transform: translateY(-1px);
}

/* ---- Buttons ---- */
.lsd-wrap .lsd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  padding: 11px 22px;
  font-weight: 700;
  font-size: 0.97rem;
  transition: all 0.22s ease;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
}
.lsd-wrap .lsd-btn-primary {
  background: var(--lsd-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(124, 29, 29, 0.3);
}
.lsd-wrap .lsd-btn-primary:hover {
  background: var(--lsd-primary-light);
  color: #fff;
  transform: translateY(-1px);
}
.lsd-wrap .lsd-btn-secondary {
  border-color: var(--lsd-border);
  background: #fff;
  color: var(--lsd-text);
  box-shadow: var(--lsd-shadow-sm);
}
.lsd-wrap .lsd-btn-secondary:hover {
  border-color: var(--lsd-primary);
  color: var(--lsd-primary);
  box-shadow: var(--lsd-shadow);
}
.lsd-wrap .lsd-btn-light {
  background: #fff;
  color: var(--lsd-primary);
  border: 1px solid rgba(255,255,255,0.6);
  font-weight: 700;
}
.lsd-wrap .lsd-btn-light:hover {
  background: var(--lsd-bg-warm);
  color: var(--lsd-primary);
  transform: translateY(-1px);
}
.lsd-wrap .lsd-btn-ghost {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.12);
}
.lsd-wrap .lsd-btn-ghost:hover {
  background: rgba(255,255,255,0.22);
  color: #fff;
  transform: translateY(-1px);
}

/* ============================================================
   Hero Panel (tổng quan)
   ============================================================ */
.lsd-wrap .lsd-hero-panel {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius-lg);
  padding: 28px;
  box-shadow: var(--lsd-shadow);
  position: relative;
  overflow: hidden;
}
.lsd-wrap .lsd-hero-panel::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  top: -110px;
  right: -90px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(185, 28, 28, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.lsd-wrap .lsd-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--lsd-border);
}
.lsd-wrap .lsd-panel-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--lsd-primary);
}
.lsd-wrap .lsd-status {
  padding: 5px 13px;
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 700;
  background: var(--lsd-bg-warm);
  color: var(--lsd-primary);
  border: 1px solid var(--lsd-border-accent);
  white-space: nowrap;
}

/* Các dòng giai đoạn trong panel */
.lsd-wrap .lsd-phase-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lsd-wrap .lsd-phase-row {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--lsd-bg-surface);
  border: 1px solid var(--lsd-border);
}
.lsd-wrap .lsd-phase-row:hover {
  border-color: var(--lsd-border-accent);
  background: var(--lsd-bg-warm);
}
.lsd-wrap .lsd-phase-label {
  font-weight: 800;
  color: var(--lsd-primary);
  font-size: 0.9rem;
  line-height: 1.4;
  text-align: center;
}
.lsd-wrap .lsd-phase-row h4 {
  margin: 0 0 3px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--lsd-text);
  line-height: 1.35;
}
.lsd-wrap .lsd-phase-row small {
  color: var(--lsd-muted);
  font-size: 0.82rem;
}

/* ============================================================
   Sections
   ============================================================ */
.lsd-wrap .lsd-section { padding: 10px 0 0; }

.lsd-wrap .lsd-section-header { margin-bottom: 28px; }
.lsd-wrap .lsd-section-header h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.8rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
  font-weight: 800;
  color: var(--lsd-primary);
}
.lsd-wrap .lsd-section-header p {
  margin: 0;
  color: var(--lsd-text-secondary);
  font-size: 1.03rem;
  line-height: 1.7;
}

/* ============================================================
   Period blocks (6 giai đoạn)
   ============================================================ */
.lsd-wrap .lsd-period-block { margin-bottom: 44px; }

.lsd-wrap .lsd-period-block-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 10px 18px;
  border-radius: 10px;
}

.lsd-wrap .lsd-period-block-title.gd1 { background: var(--lsd-gd1); }
.lsd-wrap .lsd-period-block-title.gd2 { background: var(--lsd-gd2); }
.lsd-wrap .lsd-period-block-title.gd3 { background: var(--lsd-gd3); }
.lsd-wrap .lsd-period-block-title.gd4 { background: var(--lsd-gd4); }
.lsd-wrap .lsd-period-block-title.gd5 { background: var(--lsd-gd5); }
.lsd-wrap .lsd-period-block-title.gd6 { background: var(--lsd-gd6); }

.lsd-wrap .lsd-dynasty-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.lsd-wrap .lsd-dynasty-grid.cols-1 {
  grid-template-columns: 1fr;
}
.lsd-wrap .lsd-dynasty-grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* ---- Dynasty Card ---- */
.lsd-wrap .lsd-dynasty-card {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 18px 20px;
  box-shadow: var(--lsd-shadow-sm);
  border-top: 3px solid var(--lsd-border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lsd-wrap .lsd-dynasty-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--lsd-shadow);
  border-color: var(--lsd-border-accent);
}
.lsd-wrap .lsd-dynasty-card.gd1 { border-top-color: var(--lsd-gd1); }
.lsd-wrap .lsd-dynasty-card.gd2 { border-top-color: var(--lsd-gd2); }
.lsd-wrap .lsd-dynasty-card.gd3 { border-top-color: var(--lsd-gd3); }
.lsd-wrap .lsd-dynasty-card.gd4 { border-top-color: var(--lsd-gd4); }
.lsd-wrap .lsd-dynasty-card.gd5 { border-top-color: var(--lsd-gd5); }
.lsd-wrap .lsd-dynasty-card.gd6 { border-top-color: var(--lsd-gd6); }

.lsd-wrap .lsd-dynasty-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.lsd-wrap .lsd-dynasty-card h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  flex: 1;
  color: var(--lsd-text);
}
.lsd-wrap .lsd-dynasty-card p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--lsd-text-secondary);
  line-height: 1.6;
  flex: 1;
}

/* ---- Transition note ---- */
.lsd-wrap .lsd-transition-note {
  margin-top: 4px;
  padding: 10px 14px;
  background: #f8fafc;
  border-left: 3px solid #94a3b8;
  border-radius: 0 6px 6px 0;
  font-size: 0.86rem;
  flex: none;
}
.lsd-wrap .lsd-transition-note p {
  margin: 0;
  color: #475569;
  line-height: 1.6;
  font-size: 0.86rem;
}
.lsd-wrap .lsd-transition-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8;
  margin-bottom: 5px;
}

/* ---- Legend box (truyền thuyết) ---- */
.lsd-wrap .lsd-legend-box {
  margin-top: 4px;
  padding: 10px 14px;
  background: #fffbeb;
  border-left: 3px solid #f59e0b;
  border-radius: 0 6px 6px 0;
  font-size: 0.86rem;
}
.lsd-wrap .lsd-legend-box p {
  margin: 0 0 6px;
  color: #78350f;
  line-height: 1.6;
  font-size: 0.86rem;
}
.lsd-wrap .lsd-legend-box p:last-child {
  margin-bottom: 0;
}
.lsd-wrap .lsd-legend-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #d97706;
  margin-bottom: 5px;
}

/* details/summary collapsible legend-box */
.lsd-wrap details.lsd-legend-box {
  cursor: default;
}
.lsd-wrap details.lsd-legend-box > summary.lsd-legend-label {
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.lsd-wrap details.lsd-legend-box > summary.lsd-legend-label::-webkit-details-marker {
  display: none;
}
.lsd-wrap details.lsd-legend-box > summary.lsd-legend-label::before {
  content: '▶ ';
  font-size: 0.65rem;
  margin-right: 4px;
  transition: transform 0.2s;
  display: inline-block;
}
.lsd-wrap details[open].lsd-legend-box > summary.lsd-legend-label::before {
  transform: rotate(90deg);
}
.lsd-wrap details.lsd-legend-box > p {
  animation: lsd-fade-in 0.25s ease;
}
@keyframes lsd-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Memory tip box ---- */
.lsd-wrap .lsd-memory-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: linear-gradient(135deg, #fef9c3 0%, #fef3c7 100%);
  border: 1px solid #fcd34d;
  border-left: 4px solid #d97706;
  border-radius: 12px;
  padding: 18px 22px;
  margin: 24px 0 32px;
}
.lsd-wrap .lsd-memory-icon {
  font-size: 1.7rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}
.lsd-wrap .lsd-memory-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #92400e;
  margin-bottom: 5px;
}
.lsd-wrap .lsd-memory-seq {
  font-size: 1.02rem;
  font-weight: 800;
  color: #78350f;
  letter-spacing: 0.03em;
  margin-bottom: 7px;
  line-height: 1.4;
}
.lsd-wrap .lsd-memory-sub {
  font-size: 0.84rem;
  color: #92400e;
  line-height: 1.55;
}
.lsd-wrap .lsd-memory-sub strong {
  color: #78350f;
}
.lsd-wrap .lsd-memory-heroes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.lsd-wrap .lsd-memory-heroes span {
  background: #fff;
  border: 1px solid #fcd34d;
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 0.79rem;
  font-weight: 600;
  color: #78350f;
  white-space: nowrap;
}

/* ---- Two-column sub-table layout ---- */
.lsd-wrap .lsd-two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
@media (max-width: 768px) {
  .lsd-wrap .lsd-two-cols {
    grid-template-columns: 1fr;
  }
}
.lsd-wrap .lsd-sub-section-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--lsd-primary);
  margin: 0 0 12px;
  padding-bottom: 7px;
  border-bottom: 2px solid var(--lsd-border);
}
.lsd-wrap .lsd-fact-box {
  margin-top: 12px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-left: 3px solid #16a34a;
  border-radius: 0 8px 8px 0;
  padding: 10px 14px;
  font-size: 0.84rem;
  color: #166534;
  line-height: 1.6;
}
.lsd-wrap .lsd-fact-box strong {
  color: #14532d;
}
.lsd-wrap .lsd-dynasty-year {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 8px;
  white-space: nowrap;
  background: transparent;
  border: 1.5px solid var(--lsd-border);
  color: var(--lsd-muted);
  flex-shrink: 0;
}
.lsd-wrap .gd1 .lsd-dynasty-year { border-color: var(--lsd-gd1); color: var(--lsd-gd1); }
.lsd-wrap .gd2 .lsd-dynasty-year { border-color: var(--lsd-gd2); color: var(--lsd-gd2); }
.lsd-wrap .gd3 .lsd-dynasty-year { border-color: var(--lsd-gd3); color: var(--lsd-gd3); }
.lsd-wrap .gd4 .lsd-dynasty-year { border-color: var(--lsd-gd4); color: var(--lsd-gd4); }
.lsd-wrap .gd5 .lsd-dynasty-year { border-color: var(--lsd-gd5); color: var(--lsd-gd5); }
.lsd-wrap .gd6 .lsd-dynasty-year { border-color: var(--lsd-gd6); color: var(--lsd-gd6); }

/* ---- Tags ---- */
.lsd-wrap .lsd-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 7px;
  font-size: 0.79rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.lsd-wrap .lsd-tag-doc-lap {
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
}
.lsd-wrap .lsd-tag-bac-thuoc {
  background: #fff7ed;
  color: #c2410c;
  border: 1px solid #fed7aa;
}
.lsd-wrap .lsd-tag-khoi-nghia {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}
.lsd-wrap .lsd-tag-phuc-hung {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* ============================================================
   Timeline dọc
   ============================================================ */
.lsd-wrap .lsd-timeline-section { padding: 10px 0 0; }

.lsd-wrap .lsd-timeline-wrap {
  position: relative;
  padding: 10px 0;
}
.lsd-wrap .lsd-timeline-wrap::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  top: 0;
  bottom: 0;
  background: linear-gradient(180deg, var(--lsd-border-accent) 0%, var(--lsd-border) 50%, transparent 100%);
}

.lsd-wrap .lsd-timeline-item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0 20px;
  margin-bottom: 28px;
  align-items: start;
  position: relative;
}

/* Cột trái */
.lsd-wrap .lsd-tl-left {
  text-align: right;
}
/* Cột phải */
.lsd-wrap .lsd-tl-right {
  text-align: left;
}
/* Cột giữa — icon + năm */
.lsd-wrap .lsd-tl-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
  z-index: 1;
}
.lsd-wrap .lsd-tl-dot {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--lsd-border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--lsd-shadow-sm);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
.lsd-wrap .lsd-tl-year {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--lsd-muted);
  text-align: center;
  white-space: nowrap;
  line-height: 1.3;
}

/* Card trong timeline */
.lsd-wrap .lsd-tl-card {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 16px 18px;
  box-shadow: var(--lsd-shadow-sm);
  display: inline-block;
  width: 100%;
}
.lsd-wrap .lsd-tl-card:hover {
  box-shadow: var(--lsd-shadow);
  border-color: var(--lsd-border-accent);
  transform: translateY(-1px);
}
.lsd-wrap .lsd-tl-card h4 {
  margin: 0 0 6px;
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--lsd-text);
}
.lsd-wrap .lsd-tl-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--lsd-text-secondary);
  line-height: 1.6;
}

/* Xen kẽ: hàng chẵn thì card bên trái, hàng lẻ thì card bên phải */
.lsd-wrap .lsd-tl-left .lsd-tl-card {
  border-right: 3px solid var(--lsd-border-accent);
}
.lsd-wrap .lsd-tl-right .lsd-tl-card {
  border-left: 3px solid var(--lsd-border-accent);
}

/* Bắc thuộc — màu riêng */
.lsd-wrap .lsd-tl-card.bac-thuoc {
  border-right-color: var(--lsd-gd2);
  border-left-color: var(--lsd-gd2);
  background: #fffbf5;
}
.lsd-wrap .lsd-tl-dot.bac-thuoc { border-color: var(--lsd-gd2); }

/* Giai đoạn color mapping */
.lsd-wrap .lsd-tl-card.gd1,
.lsd-wrap .lsd-tl-dot.gd1 { border-color: var(--lsd-gd1); }
.lsd-wrap .lsd-tl-card.gd2,
.lsd-wrap .lsd-tl-dot.gd2 { border-color: var(--lsd-gd2); background: #fffbf5; }
.lsd-wrap .lsd-tl-card.gd3,
.lsd-wrap .lsd-tl-dot.gd3 { border-color: var(--lsd-gd3); }
.lsd-wrap .lsd-tl-card.gd4,
.lsd-wrap .lsd-tl-dot.gd4 { border-color: var(--lsd-gd4); }
.lsd-wrap .lsd-tl-card.gd5,
.lsd-wrap .lsd-tl-dot.gd5 { border-color: var(--lsd-gd5); }
.lsd-wrap .lsd-tl-card.gd6,
.lsd-wrap .lsd-tl-dot.gd6 { border-color: var(--lsd-gd6); }

/* Empty cell for alternating layout */
.lsd-wrap .lsd-tl-empty { /* just a placeholder */ }

/* ============================================================
   Bảng tổng hợp
   ============================================================ */
.lsd-wrap .lsd-table-wrap {
  overflow: auto;
  border-radius: var(--lsd-radius);
  border: 1px solid var(--lsd-border);
  box-shadow: var(--lsd-shadow);
  background: #fff;
}
.lsd-wrap .lsd-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
}
.lsd-wrap .lsd-table-wrap th,
.lsd-wrap .lsd-table-wrap td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--lsd-border);
  text-align: left;
  vertical-align: top;
  font-size: 0.93rem;
}
.lsd-wrap .lsd-table-wrap th {
  background: var(--lsd-bg-surface);
  color: var(--lsd-primary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  border-bottom: 2px solid var(--lsd-border);
}
.lsd-wrap .lsd-table-wrap tbody tr:last-child td { border-bottom: none; }
.lsd-wrap .lsd-table-wrap tbody tr:hover { background: var(--lsd-bg-surface); }
.lsd-wrap .lsd-table-wrap td strong { color: var(--lsd-text); }
.lsd-wrap .lsd-table-wrap td.year-col {
  white-space: nowrap;
  color: var(--lsd-muted);
  font-weight: 600;
  font-size: 0.88rem;
}

/* ============================================================
   FAQ
   ============================================================ */
.lsd-wrap .lsd-faq .accordion { --bs-accordion-border-width: 0; }
.lsd-wrap .lsd-faq .accordion-item {
  background: #fff;
  border: 1px solid var(--lsd-border) !important;
  border-radius: var(--lsd-radius) !important;
  margin-bottom: 12px;
  box-shadow: var(--lsd-shadow-sm);
  overflow: hidden;
}
.lsd-wrap .lsd-faq .accordion-item:hover {
  border-color: var(--lsd-border-accent) !important;
  box-shadow: var(--lsd-shadow);
}
.lsd-wrap .lsd-faq .accordion-button {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--lsd-primary);
  background: transparent;
  padding: 16px 20px;
  box-shadow: none !important;
}
.lsd-wrap .lsd-faq .accordion-button:not(.collapsed) {
  color: var(--lsd-primary);
  background: var(--lsd-bg-warm);
}
.lsd-wrap .lsd-faq .accordion-button::after {
  background-image: none;
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--lsd-muted);
  width: auto;
  height: auto;
  transform: none;
}
.lsd-wrap .lsd-faq .accordion-button:not(.collapsed)::after {
  content: "\2212";
  color: var(--lsd-primary);
  transform: none;
}
.lsd-wrap .lsd-faq .accordion-body {
  margin: 0 20px;
  padding: 12px 0 16px;
  color: var(--lsd-text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
  border-top: 1px solid var(--lsd-border);
}

/* ============================================================
   CTA box
   ============================================================ */
.lsd-wrap .lsd-cta-box {
  border-radius: var(--lsd-radius-lg);
  padding: 36px 40px;
  background: linear-gradient(135deg, #7c1d1d 0%, #b91c1c 55%, #dc2626 100%);
  color: #fff;
  box-shadow: 0 12px 36px rgba(124, 29, 29, 0.22);
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 32px;
  align-items: center;
  margin-top: 52px;
  position: relative;
  overflow: hidden;
}
.lsd-wrap .lsd-cta-box::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  bottom: -80px;
  right: -40px;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  pointer-events: none;
}
.lsd-wrap .lsd-cta-box h2 {
  margin: 0 0 10px;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  line-height: 1.25;
  font-weight: 800;
}
.lsd-wrap .lsd-cta-box p {
  margin: 0;
  color: rgba(255,255,255,0.88);
  font-size: 0.98rem;
  line-height: 1.65;
}
.lsd-wrap .lsd-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

/* ============================================================
   Stat cards (hero overview)
   ============================================================ */
.lsd-wrap .lsd-stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}
.lsd-wrap .lsd-stat-card {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 16px 18px;
  box-shadow: var(--lsd-shadow-sm);
  text-align: center;
}
.lsd-wrap .lsd-stat-card:hover {
  border-color: var(--lsd-border-accent);
  box-shadow: var(--lsd-shadow);
  transform: translateY(-1px);
}
.lsd-wrap .lsd-stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--lsd-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.lsd-wrap .lsd-stat-label {
  font-size: 0.85rem;
  color: var(--lsd-muted);
  font-weight: 500;
}

/* ============================================================
   Bootstrap ul.timeline — enhanced card styles (lsd-wrap)
   ============================================================ */

/* Event card */
.lsd-wrap .timeline-item .timeline-event {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 18px 22px;
  box-shadow: var(--lsd-shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.lsd-wrap .timeline-item .timeline-event:hover {
  transform: translateY(-2px);
  box-shadow: var(--lsd-shadow);
}

/* Header row: title + year badge */
.lsd-wrap .timeline-item .timeline-header {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px !important;
}
.lsd-wrap .timeline-item .timeline-header h6 {
  font-size: 1.06rem !important;
  font-weight: 800 !important;
  color: var(--lsd-text) !important;
  letter-spacing: -0.015em;
}
/* Year badge */
.lsd-wrap .timeline-item .timeline-header .text-muted {
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  padding: 3px 11px;
  border-radius: 8px;
  border: 1px solid var(--lsd-border);
  background: var(--lsd-bg-surface);
  color: var(--lsd-muted) !important;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Body text */
.lsd-wrap .timeline-item p {
  font-size: 0.94rem;
  color: var(--lsd-text-secondary);
  line-height: 1.7;
}

/* Year pill indicator — stacked layout: pill on line, event card below */
.lsd-wrap .timeline-item {
  padding-left: 1.75rem !important;
}
.lsd-wrap .timeline-indicator {
  position: relative !important;
  left: auto !important;
  top: auto !important;
  display: inline-flex !important;
  align-items: center !important;
  width: auto !important;
  height: auto !important;
  padding: 4px 14px 4px 10px !important;
  border-radius: 0 20px 20px 0 !important;
  font-size: 0.7rem !important;
  font-weight: 700 !important;
  white-space: nowrap !important;
  color: #fff !important;
  line-height: 1.5 !important;
  transform: none !important;
  background-color: #94a3b8 !important;
  margin-left: -1.75rem !important;
  margin-bottom: 8px !important;
}
/* Event card: reset theme's negative top, remove arrow */
.lsd-wrap .timeline-item .timeline-event {
  margin-top: 0 !important;
  top: 0 !important;
}
.lsd-wrap .timeline-item .timeline-event::before {
  display: none !important;
}
.lsd-wrap .timeline-item-primary  .timeline-indicator { background-color: #696cff !important; }
.lsd-wrap .timeline-item-warning  .timeline-indicator { background-color: #fd7e14 !important; }
.lsd-wrap .timeline-item-info     .timeline-indicator { background-color: #03c3ec !important; }
.lsd-wrap .timeline-item-success  .timeline-indicator { background-color: #28a745 !important; }
.lsd-wrap .timeline-item-danger   .timeline-indicator { background-color: #ff3e1d !important; }
.lsd-wrap .timeline-item-dark     .timeline-indicator { background-color: #233446 !important; }

/* ---- Per-color: left accent border + tinted bg + year badge ---- */

/* primary (GĐ1 — Văn Lang) */
.lsd-wrap .timeline-item-primary .timeline-event {
  border-left: 4px solid #696cff;
  background: linear-gradient(to right, #f4f3ff 0%, #fff 56px);
}
.lsd-wrap .timeline-item-primary .timeline-event:hover { border-color: #696cff; }
.lsd-wrap .timeline-item-primary .timeline-header h6 { color: #4a4fb5 !important; }
.lsd-wrap .timeline-item-primary .timeline-header .text-muted {
  background: #eeecff;
  color: #5453b0 !important;
  border-color: #c9c5ff;
}

/* warning (GĐ2 — Bắc thuộc) */
.lsd-wrap .timeline-item-warning .timeline-event {
  border-left: 4px solid #fd7e14;
  background: linear-gradient(to right, #fff8f1 0%, #fff 56px);
}
.lsd-wrap .timeline-item-warning .timeline-event:hover { border-color: #fd7e14; }
.lsd-wrap .timeline-item-warning .timeline-header h6 { color: #a04500 !important; }
.lsd-wrap .timeline-item-warning .timeline-header .text-muted {
  background: #fff1e2;
  color: #995200 !important;
  border-color: #fdd39b;
}

/* info (GĐ3 — Tự chủ) */
.lsd-wrap .timeline-item-info .timeline-event {
  border-left: 4px solid #03c3ec;
  background: linear-gradient(to right, #effbff 0%, #fff 56px);
}
.lsd-wrap .timeline-item-info .timeline-event:hover { border-color: #03c3ec; }
.lsd-wrap .timeline-item-info .timeline-header h6 { color: #0278a4 !important; }
.lsd-wrap .timeline-item-info .timeline-header .text-muted {
  background: #dff6fd;
  color: #056f96 !important;
  border-color: #9de7f6;
}

/* success (GĐ4 — Thịnh trị) */
.lsd-wrap .timeline-item-success .timeline-event {
  border-left: 4px solid #71dd37;
  background: linear-gradient(to right, #f2fbee 0%, #fff 56px);
}
.lsd-wrap .timeline-item-success .timeline-event:hover { border-color: #71dd37; }
.lsd-wrap .timeline-item-success .timeline-header h6 { color: #2a6f18 !important; }
.lsd-wrap .timeline-item-success .timeline-header .text-muted {
  background: #e7f9dd;
  color: #286618 !important;
  border-color: #b3edaa;
}

/* danger (GĐ5 — Phục hưng / Lê) */
.lsd-wrap .timeline-item-danger .timeline-event {
  border-left: 4px solid #ff3e1d;
  background: linear-gradient(to right, #fff5f4 0%, #fff 56px);
}
.lsd-wrap .timeline-item-danger .timeline-event:hover { border-color: #ff3e1d; }
.lsd-wrap .timeline-item-danger .timeline-header h6 { color: #c01c07 !important; }
.lsd-wrap .timeline-item-danger .timeline-header .text-muted {
  background: #ffecea;
  color: #b91c1c !important;
  border-color: #ffb8b0;
}

/* dark (GĐ6 — Nguyễn) */
.lsd-wrap .timeline-item-dark .timeline-event {
  border-left: 4px solid #233446;
  background: linear-gradient(to right, #f1f4f6 0%, #fff 56px);
}
.lsd-wrap .timeline-item-dark .timeline-event:hover { border-color: #233446; }
.lsd-wrap .timeline-item-dark .timeline-header h6 { color: #1d2f40 !important; }
.lsd-wrap .timeline-item-dark .timeline-header .text-muted {
  background: #e8ecef;
  color: #374350 !important;
  border-color: #c2cdd6;
}

/* ============================================================
   Tài liệu tham khảo
   ============================================================ */
.lsd-wrap .lsd-ref-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.lsd-wrap .lsd-ref-group {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 0;
  overflow: hidden;
  transition: box-shadow 0.22s ease, transform 0.22s ease;
}
.lsd-wrap .lsd-ref-group:hover {
  box-shadow: var(--lsd-shadow-lg);
  transform: translateY(-2px);
}
/* --- Group: Tài liệu --- */
.lsd-wrap .lsd-ref-group--doc .lsd-ref-group-header {
  background: linear-gradient(135deg, #065f46 0%, #059669 100%);
  color: #fff;
  border-bottom-color: transparent;
}
.lsd-wrap .lsd-ref-group--doc .lsd-ref-group-header h3 { color: #fff; }
.lsd-wrap .lsd-ref-group--doc .lsd-ref-group-header .lsd-ref-badge { background: rgba(255,255,255,0.2); color: #fff; }
/* --- Group: Video --- */
.lsd-wrap .lsd-ref-group--video .lsd-ref-group-header {
  background: linear-gradient(135deg, #991b1b 0%, #dc2626 100%);
  color: #fff;
  border-bottom-color: transparent;
}
.lsd-wrap .lsd-ref-group--video .lsd-ref-group-header h3 { color: #fff; }
.lsd-wrap .lsd-ref-group--video .lsd-ref-group-header .lsd-ref-badge { background: rgba(255,255,255,0.2); color: #fff; }

.lsd-wrap .lsd-ref-group-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 22px;
  margin: 0;
  border-bottom: 2px solid var(--lsd-border);
}
.lsd-wrap .lsd-ref-icon {
  font-size: 1.5rem;
  line-height: 1;
  filter: grayscale(0) brightness(1.1);
}
.lsd-wrap .lsd-ref-group-header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--lsd-text);
  flex: 1;
}
.lsd-wrap .lsd-ref-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(0,0,0,0.06);
  color: var(--lsd-muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.lsd-wrap .lsd-ref-list {
  list-style: none;
  margin: 0;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lsd-wrap .lsd-ref-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--lsd-bg-surface);
  border: 1.5px solid #e5e7eb;
  border-radius: 12px;
  text-decoration: none;
  color: var(--lsd-text);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.18s, background 0.2s;
}
.lsd-wrap .lsd-ref-link:hover {
  border-color: #059669;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.12);
  background: #f0fdf4;
  transform: translateY(-2px);
}
.lsd-wrap .lsd-ref-link-video:hover {
  border-color: #dc2626;
  box-shadow: 0 4px 16px rgba(220, 38, 38, 0.12);
  background: #fef2f2;
}
.lsd-wrap .lsd-ref-file-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.lsd-wrap .lsd-ref-rar {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #78350f;
  border: 1.5px solid #f59e0b;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.15);
}
.lsd-wrap .lsd-ref-pdf {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #991b1b;
  border: 1.5px solid #ef4444;
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.15);
}
.lsd-wrap .lsd-ref-yt {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #dc2626;
  border: 1.5px solid #ef4444;
  font-size: 1.4rem;
  box-shadow: 0 2px 6px rgba(220, 38, 38, 0.15);
}
.lsd-wrap .lsd-ref-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.lsd-wrap .lsd-ref-info strong {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--lsd-text);
  line-height: 1.35;
}
.lsd-wrap .lsd-ref-info small {
  font-size: 0.78rem;
  color: var(--lsd-muted);
  line-height: 1.4;
}
.lsd-wrap .lsd-ref-action {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #059669;
  font-size: 1.15rem;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.lsd-wrap .lsd-ref-link:hover .lsd-ref-action {
  background: #059669;
  color: #fff;
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
  transform: scale(1.08);
}
.lsd-wrap .lsd-ref-link-video .lsd-ref-action {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #dc2626;
}
.lsd-wrap .lsd-ref-link-video:hover .lsd-ref-action {
  background: #dc2626;
  color: #fff;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

@media (max-width: 768px) {
  .lsd-wrap .lsd-ref-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .lsd-wrap .lsd-hero-grid { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-cta-box { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-cta-actions { justify-content: flex-start; }
  .lsd-wrap .lsd-cta-box { padding: 28px; }
}
@media (max-width: 768px) {
  .lsd-wrap .lsd-dynasty-grid { grid-template-columns: 1fr 1fr; }
  .lsd-wrap .lsd-dynasty-grid.cols-1 { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-stats-row { grid-template-columns: 1fr 1fr; }

  /* Timeline thành 1 cột */
  .lsd-wrap .lsd-timeline-wrap::before { left: 22px; transform: none; }
  .lsd-wrap .lsd-timeline-item {
    grid-template-columns: 50px 1fr;
    grid-template-rows: auto;
  }
  .lsd-wrap .lsd-tl-left { display: none; }
  .lsd-wrap .lsd-tl-center { grid-column: 1; grid-row: 1; }
  .lsd-wrap .lsd-tl-right { grid-column: 2; grid-row: 1; text-align: left; }
  /* show right card even for left-side items */
  .lsd-wrap .lsd-tl-left-card-wrap { display: none; }
  .lsd-wrap .lsd-tl-right-card-wrap { display: block !important; }
}
@media (max-width: 480px) {
  .lsd-wrap .lsd-dynasty-grid { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-dynasty-grid.cols-1 { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-dynasty-grid.cols-2 { grid-template-columns: 1fr; }
  .lsd-wrap .lsd-stats-row { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   Nhân vật tiêu biểu
   ============================================================ */
.lsd-wrap .lsd-person-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
@media (max-width: 900px) {
  .lsd-wrap .lsd-person-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .lsd-wrap .lsd-person-grid { grid-template-columns: 1fr; }
}
.lsd-wrap .lsd-person-card {
  background: #fff;
  border: 1px solid var(--lsd-border);
  border-radius: var(--lsd-radius);
  padding: 18px 16px;
  box-shadow: var(--lsd-shadow-sm);
  text-align: center;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.lsd-wrap .lsd-person-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--lsd-shadow);
  border-color: var(--lsd-border-accent);
}
.lsd-wrap .lsd-person-avatar {
  width: 160px;
  height: 200px;
  border-radius: 12px;
  display: block;
  margin: 0 auto 14px;
  overflow: hidden;
  background: var(--lsd-bg-warm);
  border: 3px solid var(--lsd-border-accent);
  box-shadow: 0 2px 8px rgba(0,0,0,.10);
  flex-shrink: 0;
  position: relative;
}
.lsd-wrap .lsd-person-avatar img.lsd-avatar-img {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  padding: 0 !important;
  margin: 0 !important;
  box-sizing: border-box !important;
  object-fit: cover !important;
  object-position: top center !important;
  display: block !important;
  position: relative;
  z-index: 1;
}
.lsd-wrap .lsd-person-avatar::after {
  content: '👤';
  font-size: 2.4rem;
  position: absolute;
  pointer-events: none;
}
.lsd-wrap .lsd-person-card h4 {
  margin: 0 0 4px;
  font-size: 0.93rem;
  font-weight: 700;
  color: var(--lsd-text);
  line-height: 1.3;
}
.lsd-wrap .lsd-person-card .lsd-person-years {
  font-size: 0.78rem;
  color: var(--lsd-muted);
  font-weight: 600;
  margin-bottom: 8px;
}
.lsd-wrap .lsd-person-card p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--lsd-text-secondary);
  line-height: 1.55;
  text-align: left;
}
/* Màu border avatar theo giai đoạn */
.lsd-wrap .lsd-person-avatar.gd1 { border-color: #c4b5fd; }
.lsd-wrap .lsd-person-avatar.gd2 { border-color: #fcd34d; }
.lsd-wrap .lsd-person-avatar.gd3 { border-color: #93c5fd; }
.lsd-wrap .lsd-person-avatar.gd4 { border-color: #86efac; }
.lsd-wrap .lsd-person-avatar.gd5 { border-color: #fca5a5; }
.lsd-wrap .lsd-person-avatar.gd6 { border-color: #bfdbfe; }
/* Placeholder emoji for cards without image */
.lsd-wrap .lsd-person-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 3rem;
  position: relative;
  z-index: 1;
}


/* ============================================================
   Ch� th�ch song ng? (Bilingual annotations & Vocabulary)
   ============================================================ */
.lsd-wrap .lsd-en {
  font-style: italic;
  font-size: 0.85em;
  color: var(--lsd-gold);
  font-weight: 500;
}
.lsd-wrap .lsd-vocab-wrap { overflow-x: auto; margin-bottom: 20px; }
.lsd-wrap .lsd-vocab-wrap table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.lsd-wrap .lsd-vocab-wrap thead th { background: var(--lsd-primary); color: #fff; padding: 10px 14px; text-align: left; }
.lsd-wrap .lsd-vocab-wrap td { padding: 10px 14px; border-bottom: 1px solid #e5e7eb; vertical-align: top; }
.lsd-wrap .lsd-vocab-wrap tr:hover td { background: var(--lsd-bg-warm); }
.lsd-wrap .lsd-vocab-vn { display: block; font-size: 0.8rem; margin-top: 4px; color: var(--lsd-primary); }
.lsd-wrap .lsd-vocab-en { display: block; font-size: 0.8rem; margin-top: 2px; color: var(--lsd-gold); }
.lsd-wrap .lsd-vocab-section-title {
  background: var(--lsd-primary); color: #fff; font-weight: 700; padding: 8px 14px;
}
/* Flashcard grid for vocab */
.lsd-wrap .lsd-vocab-flashcard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.lsd-wrap .lsd-vocab-flashcard {
  background: #fff;
  border: 1.5px solid var(--lsd-border);
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: var(--lsd-shadow-sm);
}
.lsd-wrap .lsd-vocab-flashcard-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 2px solid var(--lsd-border-accent);
}
.lsd-wrap .lsd-vocab-flashcard-header h4 {
  margin: 0; font-size: 0.92rem; font-weight: 700; color: var(--lsd-primary);
}
.lsd-wrap .lsd-vocab-flashcard p {
  margin: 4px 0; font-size: 0.86rem; color: var(--lsd-text);
}
.lsd-wrap .lsd-vocab-flashcard p strong { color: var(--lsd-primary-dark); }
.lsd-wrap .lsd-highlight-note {
  background: linear-gradient(135deg, #fff7f7, #fee2e2);
  border-left: 4px solid var(--lsd-accent);
  border-radius: 10px;
  padding: 14px 18px;
  margin-top: 20px;
  font-size: 0.9rem;
}
.lsd-wrap .lsd-highlight-label {
  font-weight: 700;
  color: var(--lsd-primary-dark);
  margin-bottom: 6px;
}
@media (max-width: 600px) {
  .lsd-wrap .lsd-vocab-flashcard-grid { grid-template-columns: 1fr; }
}