.seo-landing {
  background: linear-gradient(180deg, #0a1510 0%, #060a08 100%);
  color: #c8d4cc;
  font-family: var(--font-ui, system-ui, sans-serif);
  line-height: 1.65;
  font-size: 0.95rem;
  scroll-margin-top: 0;
}

.seo-landing.is-hidden {
  display: none;
}

.seo-intro,
.seo-section,
.seo-long-form {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}

.seo-intro {
  padding-top: 2rem;
  text-align: center;
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.seo-intro-title {
  font-family: var(--font-display, Georgia, serif);
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  color: var(--gold-light, #f0d878);
  margin-bottom: 0.85rem;
  line-height: 1.2;
  font-weight: 700;
}

.seo-landing h1 {
  font-family: var(--font-display, Georgia, serif);
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  color: var(--gold-light, #f0d878);
  margin-bottom: 0.85rem;
  line-height: 1.2;
}

.seo-landing h2 {
  font-family: var(--font-display, Georgia, serif);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: #e8dcc0;
  margin-bottom: 0.75rem;
  text-align: center;
}

.seo-lead {
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: rgba(245, 240, 230, 0.88);
}

.seo-section-desc {
  text-align: center;
  margin: -0.25rem auto 1.25rem;
  opacity: 0.8;
}

/* Feature cards */
.seo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.seo-card {
  background: rgba(12, 22, 18, 0.85);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 14px;
  padding: 1.25rem 1rem;
  text-align: center;
}

.seo-card-icon {
  display: block;
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--gold-light, #f0d878);
}

.seo-card h3 {
  font-size: 1rem;
  color: #f0d878;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.seo-card p {
  font-size: 0.88rem;
  opacity: 0.88;
  margin: 0;
}

/* Mode grid */
.seo-mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}

.seo-mode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1rem 0.65rem;
  background: rgba(20, 92, 58, 0.25);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  text-align: center;
  transition: border-color 0.2s, transform 0.15s, background 0.2s;
}

.seo-mode:hover {
  border-color: rgba(240, 216, 120, 0.55);
  background: rgba(20, 92, 58, 0.4);
  transform: translateY(-2px);
}

.seo-mode span {
  font-size: 1.5rem;
  color: var(--gold-light, #f0d878);
  line-height: 1;
}

.seo-mode strong {
  font-size: 0.9rem;
  color: #f5f0e6;
}

.seo-mode small {
  font-size: 0.75rem;
  opacity: 0.75;
  line-height: 1.3;
}

/* Timer promo */
.seo-timer-promo {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.seo-timer-visual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(20, 92, 58, 0.35) 0%, transparent 60%),
    rgba(12, 22, 18, 0.6);
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

@media (min-width: 640px) {
  .seo-timer-visual {
    grid-template-columns: auto 1fr;
    padding: 2.5rem 2rem;
  }
}

.seo-timer-mock {
  background: linear-gradient(145deg, #0d3d2a, #145c3a);
  border: 2px solid rgba(212, 175, 55, 0.45);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  text-align: center;
  min-width: 200px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.seo-timer-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.75;
  margin-bottom: 0.35rem;
}

.seo-timer-clock {
  font-family: var(--font-display, Georgia, serif);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--gold-light, #f0d878);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.seo-timer-blinds {
  font-size: 0.9rem;
  color: rgba(245, 240, 230, 0.9);
}

.seo-timer-text h2 {
  text-align: left;
  margin-bottom: 0.65rem;
}

.seo-timer-text p {
  margin-bottom: 1rem;
  color: rgba(245, 240, 230, 0.88);
}

/* Steps */
.seo-steps {
  max-width: 560px;
  margin: 0 auto 1.25rem;
  padding-left: 1.25rem;
}

.seo-steps li {
  margin-bottom: 0.65rem;
}

.seo-cta-wrap {
  text-align: center;
  margin: 0;
}

/* Books */
.seo-books {
  max-width: 960px;
}

.seo-books-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

@media (min-width: 720px) {
  .seo-books-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.seo-book-card {
  background: rgba(12, 22, 18, 0.88);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 14px;
  padding: 1.5rem 1.35rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: border-color 0.2s, transform 0.15s;
}

.seo-book-card:hover {
  border-color: rgba(240, 216, 120, 0.4);
  transform: translateY(-2px);
}

.seo-book-badge {
  display: inline-block;
  align-self: flex-start;
  margin: 0;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #1a1208;
  background: linear-gradient(180deg, #d4af37, #a88620);
}

.seo-book-title {
  margin: 0;
  font-family: var(--font-display, Georgia, serif);
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: #f0d878;
  font-weight: 700;
  line-height: 1.3;
  text-align: left;
}

.seo-book-subtitle {
  margin: -0.25rem 0 0;
  font-family: var(--font-display, Georgia, serif);
  font-size: 1.05rem;
  color: #e8dcc0;
  font-style: italic;
  text-align: left;
}

.seo-book-desc {
  margin: 0;
  flex: 1;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(245, 240, 230, 0.88);
  text-align: left;
}

.seo-book-card .seo-cta-wrap {
  margin-top: 0.35rem;
  text-align: left;
}

.seo-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(180deg, #d4af37, #a88620);
  color: #1a1208;
  font-weight: 700;
  text-decoration: none;
  border-radius: 10px;
  font-size: 0.95rem;
  transition: filter 0.2s, transform 0.15s;
}

.seo-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.seo-btn-outline {
  background: transparent;
  color: var(--gold-light, #f0d878);
  border: 1px solid rgba(212, 175, 55, 0.5);
}

.seo-btn-outline:hover {
  background: rgba(212, 175, 55, 0.12);
  filter: none;
}

/* FAQ */
.seo-faq-item {
  background: rgba(12, 22, 18, 0.7);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 10px;
  margin-bottom: 0.65rem;
  overflow: hidden;
}

.seo-faq-item summary {
  padding: 0.85rem 1rem;
  cursor: pointer;
  font-weight: 600;
  color: #e8dcc0;
  list-style: none;
}

.seo-faq-item summary::-webkit-details-marker {
  display: none;
}

.seo-faq-item summary::before {
  content: '+ ';
  color: var(--gold-light, #f0d878);
}

.seo-faq-item[open] summary::before {
  content: '− ';
}

.seo-faq-item p {
  padding: 0 1rem 1rem;
  margin: 0;
  font-size: 0.92rem;
}

.seo-faq-item a {
  color: var(--gold-light, #f0d878);
}

/* Combo showcase */
.seo-combos {
  max-width: 960px;
}

.combo-showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.combo-showcase-item {
  background: rgba(12, 22, 18, 0.88);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 14px;
  padding: 1rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s, transform 0.15s;
}

.combo-showcase-item:hover {
  border-color: rgba(240, 216, 120, 0.4);
  transform: translateY(-2px);
}

.combo-showcase-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.combo-showcase-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: rgba(212, 175, 55, 0.15);
  color: var(--gold-light, #f0d878);
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.combo-showcase-meta h3 {
  margin: 0;
  font-family: var(--font-display, Georgia, serif);
  font-size: 1.1rem;
  color: #f0d878;
  font-weight: 600;
}

.combo-showcase-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
  padding: 0.5rem 0.25rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
}

.combo-showcase-cards .combo-card-item {
  width: 48px;
  height: 68px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.combo-showcase-cards .combo-card-item:hover {
  transform: translateY(-2px);
}

.combo-showcase-desc {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.45;
  opacity: 0.88;
  text-align: center;
}

.combo-showcase-note {
  margin: 1.25rem 0 0;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.75;
}

.combo-showcase-note em {
  color: var(--gold-light, #f0d878);
  font-style: normal;
}

@media (max-width: 640px) {
  .combo-showcase-grid {
    grid-template-columns: 1fr;
  }

  .combo-showcase-cards .combo-card-item {
    width: 42px;
    height: 59px;
  }
}

/* Modes comparison table */
.seo-modes-compare {
  max-width: 960px;
}

.modes-compare-wrap {
  overflow-x: auto;
  margin-top: 1.25rem;
  border-radius: 14px;
  border: 1px solid rgba(212, 175, 55, 0.22);
  background: rgba(12, 22, 18, 0.88);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.modes-compare-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.modes-compare-table caption.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.modes-compare-table thead {
  background: rgba(20, 92, 58, 0.45);
}

.modes-compare-table th,
.modes-compare-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid rgba(212, 175, 55, 0.12);
}

.modes-compare-table thead th {
  font-family: var(--font-display, Georgia, serif);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gold-light, #f0d878);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.modes-compare-table tbody tr:last-child th,
.modes-compare-table tbody tr:last-child td {
  border-bottom: none;
}

.modes-compare-table tbody tr:hover {
  background: rgba(20, 92, 58, 0.18);
}

.modes-compare-table tbody th {
  font-weight: 600;
  color: #f5f0e6;
  white-space: nowrap;
}

.modes-compare-table tbody th a {
  color: var(--gold-light, #f0d878);
  text-decoration: none;
}

.modes-compare-table tbody th a:hover {
  text-decoration: underline;
}

.modes-compare-table td {
  color: rgba(245, 240, 230, 0.9);
}

.win-tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
}

.win-high {
  background: rgba(52, 152, 219, 0.2);
  color: #a8d4f0;
  border: 1px solid rgba(52, 152, 219, 0.35);
}

.win-low {
  background: rgba(155, 89, 182, 0.2);
  color: #d4b8e8;
  border: 1px solid rgba(155, 89, 182, 0.35);
}

.win-both {
  background: rgba(212, 175, 55, 0.18);
  color: #f0d878;
  border: 1px solid rgba(212, 175, 55, 0.35);
}

.rule-hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.72rem;
  opacity: 0.65;
}

.diff-tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.diff-easy {
  background: rgba(39, 174, 96, 0.18);
  color: #8fdfb0;
}

.diff-medium {
  background: rgba(241, 196, 15, 0.15);
  color: #f0d878;
}

.diff-hard {
  background: rgba(231, 76, 60, 0.15);
  color: #f0a898;
}

.modes-compare-tip {
  margin: 1.1rem 0 0;
  padding: 0.85rem 1rem;
  background: rgba(212, 175, 55, 0.08);
  border-left: 3px solid rgba(212, 175, 55, 0.45);
  border-radius: 0 8px 8px 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: rgba(245, 240, 230, 0.88);
}

.modes-compare-tip strong {
  color: var(--gold-light, #f0d878);
}

@media (max-width: 720px) {
  .modes-compare-table {
    font-size: 0.82rem;
  }

  .modes-compare-table th,
  .modes-compare-table td {
    padding: 0.7rem 0.75rem;
  }
}

/* Starting hands chart 13×13 */
.seo-hand-chart {
  max-width: 960px;
}

.hand-chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem 1.1rem;
  margin: 1rem 0 1.15rem;
  font-size: 0.82rem;
}

.hand-chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(245, 240, 230, 0.88);
}

.hand-tier-swatch {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hand-chart-wrap {
  overflow-x: auto;
  padding: 0.25rem 0 0.5rem;
  -webkit-overflow-scrolling: touch;
}

.hand-chart-grid {
  display: grid;
  grid-template-columns: 2rem repeat(13, minmax(2.35rem, 1fr));
  gap: 2px;
  min-width: min(100%, 520px);
  max-width: 560px;
  margin: 0 auto;
}

.hand-chart-corner {
  background: transparent;
}

.hand-chart-axis {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gold-light, #f0d878);
  opacity: 0.85;
  user-select: none;
}

.hand-chart-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  min-height: 2rem;
  border-radius: 4px;
  font-size: clamp(0.55rem, 1.8vw, 0.72rem);
  font-weight: 700;
  line-height: 1;
  cursor: default;
  transition: transform 0.12s, box-shadow 0.12s;
  border: 1px solid rgba(0, 0, 0, 0.2);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.35);
}

.hand-chart-cell:hover,
.hand-chart-cell:focus {
  transform: scale(1.12);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
  outline: 2px solid rgba(240, 216, 120, 0.6);
  outline-offset: 1px;
}

.hand-tier-5 {
  background: linear-gradient(145deg, #1e7a42, #145c32);
  color: #e8fff0;
}

.hand-tier-4 {
  background: linear-gradient(145deg, #2d9654, #1f7040);
  color: #ecfdf2;
}

.hand-tier-3 {
  background: linear-gradient(145deg, #5a9e48, #4a8538);
  color: #f4fff0;
}

.hand-tier-2 {
  background: linear-gradient(145deg, #b8942e, #967818);
  color: #fff8e6;
}

.hand-tier-1 {
  background: linear-gradient(145deg, #3a4248, #2a3035);
  color: rgba(200, 210, 205, 0.75);
}

.hand-chart-note {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.82;
  line-height: 1.55;
}

.hand-chart-note a {
  color: var(--gold-light, #f0d878);
}

@media (max-width: 480px) {
  .hand-chart-grid {
    grid-template-columns: 1.5rem repeat(13, minmax(1.85rem, 1fr));
    min-width: 340px;
  }

  .hand-chart-axis {
    font-size: 0.62rem;
  }

  .hand-chart-cell {
    min-height: 1.65rem;
    font-size: 0.52rem;
  }
}

/* Long-form SEO article */
.seo-long-form {
  max-width: 720px;
  text-align: left;
}

.seo-long-form h2 {
  text-align: left;
  margin-top: 2rem;
}

.seo-long-form h3 {
  font-family: var(--font-display, Georgia, serif);
  font-size: 1.15rem;
  color: #e8dcc0;
  margin: 1.25rem 0 0.5rem;
}

.seo-long-form p,
.seo-long-form li {
  color: rgba(245, 240, 230, 0.88);
}

.seo-long-form ol,
.seo-long-form ul {
  padding-left: 1.35rem;
  margin: 0.75rem 0 1rem;
}

.seo-long-form li {
  margin-bottom: 0.5rem;
}

.seo-long-form a {
  color: var(--gold-light, #f0d878);
}

/* Site footer (shared) */
.site-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem 2.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(200, 212, 204, 0.85);
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.35rem 0.65rem;
  margin-bottom: 1rem;
}

.site-footer-links a {
  color: var(--gold-light, #f0d878);
  text-decoration: none;
}

.site-footer-links a:hover {
  text-decoration: underline;
}

.site-footer-sep {
  opacity: 0.45;
}

.site-footer-disclaimer {
  max-width: 640px;
  margin: 0 auto 1rem;
  line-height: 1.6;
  font-size: 0.82rem;
  opacity: 0.78;
  text-align: left;
}

.site-footer-disclaimer a {
  color: var(--gold-light, #f0d878);
}

.site-footer-copy {
  margin: 0;
  opacity: 0.75;
}

.site-footer-copy a {
  color: var(--gold-light, #f0d878);
}

.site-footer-about {
  max-width: 720px;
  margin: 0 auto 1.5rem;
  text-align: left;
  line-height: 1.65;
}

.site-footer-about p {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  color: rgba(245, 240, 230, 0.88);
}

.site-footer-about a {
  color: var(--gold-light, #f0d878);
  text-decoration: none;
}

.site-footer-about a:hover {
  text-decoration: underline;
}

.noscript-msg {
  text-align: center;
  padding: 2rem;
  color: #fff;
  background: #1a1a1a;
}