/* =========================================================================
   Dopic.app - Unified SEO Hub Architecture (Minimalist Design System)
   HowTo + Use Cases + 6 Features + Alternative Callout + FAQs + Related Matrix + CTA
   Full Mobile & Desktop Responsive + Clean Minimalist Dark/Light Adaptive
   ========================================================================= */

.seo-hub-section {
  width: 100%;
  max-width: 1240px;
  margin: 1rem auto 0 auto;
  padding: 0;
  box-sizing: border-box;
}

.seo-block {
  margin-bottom: 3.5rem;
}

.seo-block-header {
  text-align: center;
  margin-bottom: 2rem;
}

.seo-block-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.seo-block-sub {
  font-size: 0.9rem;
  color: var(--text-muted, #64748b);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.55;
}

/* 1. How-To 3-Step Grid */
.seo-howto-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.seo-step-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  padding: 1.5rem 1.35rem;
  box-shadow: none;
  position: relative;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.seo-step-card:hover {
  border-color: var(--border-hover, #cbd5e1);
  transform: translateY(-2px);
}

.seo-step-num {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--surface-subtle, #f1f5f9);
  border: 1px solid var(--border, #e2e8f0);
  color: var(--text, #0f172a);
  font-weight: 700;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
  box-shadow: none;
}

.seo-step-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  margin-bottom: 0.4rem;
}

.seo-step-card p {
  font-size: 0.85rem;
  color: var(--text-muted, #64748b);
  line-height: 1.55;
  margin: 0;
}

/* 2. Popular Use Cases Grid (PC: 3 Columns for 6 cards, 4 Columns for 4 cards) */
.seo-usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}
.seo-usecases-grid.count-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 1024px) {
  .seo-usecases-grid,
  .seo-usecases-grid.count-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.seo-usecase-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  padding: 1.35rem 1.25rem;
  box-shadow: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.seo-usecase-card:hover {
  border-color: var(--border-hover, #cbd5e1);
  transform: translateY(-2px);
}

.seo-usecase-icon {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.seo-usecase-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  margin-bottom: 0.4rem;
}

.seo-usecase-card p {
  font-size: 0.85rem;
  color: var(--text-muted, #64748b);
  line-height: 1.55;
  margin: 0;
}

/* 2.5 Examples Showcase Gallery (High-Converting Real Results) */
.seo-examples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) {
  .seo-examples-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .seo-examples-grid {
    grid-template-columns: 1fr;
  }
}
.seo-example-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}
.seo-example-card:hover {
  transform: translateY(-3px);
  border-color: #38bdf8;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
}
.seo-example-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #f8fafc;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border, #e2e8f0);
}
.seo-example-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.seo-example-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.seo-example-content {
  padding: 1.1rem 1.15rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.seo-example-content h3 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  margin-bottom: 0.35rem;
}
.seo-example-content p {
  font-size: 0.82rem;
  color: var(--text-muted, #64748b);
  line-height: 1.5;
  margin: 0;
}

/* 3. Features Grid: 6 Pillars */
.seo-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.15rem;
}

.seo-features-grid.six-cards {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .seo-features-grid.six-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .seo-features-grid.six-cards {
    grid-template-columns: 1fr;
  }
}

.seo-feat-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  padding: 1.35rem 1.25rem;
  box-shadow: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
  min-width: 0;
}

.seo-feat-card:hover {
  border-color: var(--border-hover, #cbd5e1);
  transform: translateY(-2px);
}

.seo-feat-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.seo-feat-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  margin-bottom: 0.35rem;
}

.seo-feat-card p {
  font-size: 0.84rem;
  color: var(--text-muted, #64748b);
  line-height: 1.55;
  margin: 0;
}

/* 4. Competitor Alternative / Trust Assurance Callout */
.seo-alt-callout {
  width: 100%;
  max-width: 100%;
  margin: 1.5rem 0 3.5rem 0;
  box-sizing: border-box;
}

.seo-alt-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  background: var(--surface-subtle, #f8fafc);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  padding: 0.95rem 1.5rem;
  box-sizing: border-box;
}

.seo-alt-badge {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, rgba(0, 0, 0, 0.1));
  color: var(--text-muted, #475569);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.seo-alt-inner p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text, #334155);
  font-weight: 500;
  line-height: 1.55;
  text-align: left;
}

@media (max-width: 640px) {
  .seo-alt-inner {
    flex-direction: column;
    text-align: center;
    gap: 8px;
    padding: 0.85rem 1rem;
  }
  .seo-alt-inner p {
    text-align: center;
  }
}

/* 5. FAQ Accordion (<details>) */
.seo-faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 860px;
  margin: 0 auto;
}

.seo-faq-item {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-md, 8px);
  overflow: hidden;
  box-shadow: none;
  transition: border-color 0.15s ease;
}

.seo-faq-item:hover,
.seo-faq-item[open] {
  border-color: var(--border-hover, #cbd5e1);
}

.seo-faq-q {
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text, #0f172a);
  cursor: pointer;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  user-select: none;
  list-style: none !important;
  transition: color 0.15s ease;
}

.seo-faq-q::-webkit-details-marker,
.seo-faq-q::marker,
details.seo-faq-item summary::-webkit-details-marker,
details.seo-faq-item summary::marker {
  display: none !important;
  content: "" !important;
}

.seo-faq-icon {
  font-size: 1.1rem;
  line-height: 1;
  color: var(--text-muted, #64748b);
  font-weight: 700;
  margin-left: 1rem;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  display: inline-block;
}

.seo-faq-item[open] .seo-faq-icon {
  transform: rotate(45deg);
}

.seo-faq-a {
  padding: 0 1.25rem 1.15rem 1.25rem;
  font-size: 0.86rem;
  color: var(--text-muted, #64748b);
  line-height: 1.6;
  border-top: 1px solid var(--border, #e2e8f0);
  padding-top: 0.8rem;
}

.seo-faq-a p {
  margin: 0;
}

/* 6. Related Tools Grid (PC: 3 Columns x 2 Rows = 6 Cards) */
.seo-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.seo-tool-link-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-md, 8px);
  padding: 1.1rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.seo-tool-link-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover, #cbd5e1);
}

.seo-tool-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--surface-subtle, #f1f5f9);
  border: 1px solid var(--border, #e2e8f0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.seo-tool-card-info h4 {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text, #0f172a);
  margin-bottom: 0.2rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.seo-tool-card-info p {
  font-size: 0.78rem;
  color: var(--text-muted, #64748b);
  line-height: 1.45;
  margin: 0;
}

/* 7. CTA Back Banner */
.seo-cta-banner {
  background: var(--surface-subtle, #f1f5f9);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 12px);
  padding: 2.25rem 1.5rem;
  text-align: center;
  margin: 3.5rem 0 2rem 0;
  color: var(--text, #0f172a);
}

.seo-cta-banner h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text, #0f172a);
  margin-bottom: 0.5rem;
}

.seo-cta-banner p {
  font-size: 0.88rem;
  color: var(--text-muted, #64748b);
  max-width: 580px;
  margin: 0 auto 1.35rem auto;
  line-height: 1.6;
}

.seo-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--text, #0f172a);
  color: var(--bg, #ffffff) !important;
  padding: 0.65rem 1.6rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: none;
  transition: opacity 0.15s ease;
}

.seo-cta-btn:hover {
  opacity: 0.88;
}

/* Mobile Responsive (Compact Modern Native App Style) */
@media (max-width: 640px) {
  .seo-hub-section {
    margin: 1.5rem auto 1.25rem auto;
    padding: 0 0.85rem;
  }
  .seo-block {
    margin-bottom: 1.65rem;
  }
  .seo-block-title {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
    letter-spacing: -0.015em;
  }
  .seo-block-sub {
    font-size: 0.78rem;
    line-height: 1.45;
    margin-bottom: 0.85rem;
  }
  .seo-howto-grid,
  .seo-usecases-grid,
  .seo-tools-grid {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }
  .seo-features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .seo-step-card,
  .seo-usecase-card {
    padding: 0.85rem 0.95rem;
    border-radius: 10px;
  }
  .seo-step-num {
    font-size: 0.72rem;
    padding: 2px 7px;
    margin-bottom: 0.4rem;
  }
  .seo-step-card h3,
  .seo-usecase-card h3 {
    font-size: 0.92rem;
    margin-bottom: 0.25rem;
  }
  .seo-step-card p,
  .seo-usecase-card p {
    font-size: 0.8rem;
    line-height: 1.45;
  }
  .seo-usecase-icon {
    font-size: 1.35rem;
    margin-bottom: 0.35rem;
  }
  .seo-feat-card {
    padding: 0.75rem 0.7rem;
    border-radius: 10px;
  }
  .seo-feat-card h3 {
    font-size: 0.84rem;
    margin-bottom: 0.2rem;
    line-height: 1.3;
  }
  .seo-feat-card p {
    font-size: 0.74rem;
    line-height: 1.4;
  }
  .seo-feat-icon {
    font-size: 1.35rem;
    margin-bottom: 0.3rem;
  }
  .seo-faq-list {
    gap: 0.45rem;
  }
  .seo-faq-item {
    border-radius: 9px;
    margin-bottom: 0.45rem;
  }
  .seo-faq-q {
    padding: 0.75rem 0.95rem;
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.4;
  }
  .seo-faq-icon {
    font-size: 0.95rem;
    margin-left: 0.5rem;
  }
  .seo-faq-a {
    padding: 0.65rem 0.95rem 0.85rem 0.95rem;
    font-size: 0.82rem;
    line-height: 1.5;
  }
  .seo-alt-inner {
    border-radius: 10px;
    padding: 8px 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    text-align: left;
  }
}

/* 8. Unified Breadcrumb Bar */
.seo-breadcrumb-bar {
  max-width: 1080px;
  margin: 1rem auto 0 auto;
  padding: 0 1.25rem;
  box-sizing: border-box;
}
.seo-breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--text-muted, #64748b);
}
.seo-breadcrumb-list a {
  color: var(--text-muted, #64748b) !important;
  text-decoration: none;
  transition: color 0.15s ease;
}
.seo-breadcrumb-list a:hover {
  color: var(--text, #0f172a) !important;
}
.seo-breadcrumb-separator {
  color: var(--border, #e2e8f0);
  user-select: none;
}
.seo-breadcrumb-current {
  color: var(--text, #0f172a) !important;
  font-weight: 600;
}
@media (max-width: 640px) {
  .seo-breadcrumb-bar {
    margin: 0.5rem auto 0 auto;
    padding: 0 0.85rem;
  }
  .seo-breadcrumb-list {
    font-size: 0.78rem;
    gap: 0.35rem;
  }
}

/* =========================================================================
   9. Official Spec Biometric Hub & Landing Styles
   ========================================================================= */
.spec-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.spec-metric-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-lg, 14px);
  padding: 1.5rem 1.25rem;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.spec-metric-card:hover {
  transform: translateY(-2px);
  border-color: #6366f1;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.08);
}
.spec-metric-icon {
  font-size: 1.85rem;
  margin-bottom: 0.6rem;
  line-height: 1;
}
.spec-metric-label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted, #64748b);
  margin-bottom: 0.35rem;
}
.spec-metric-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text, #0f172a);
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}
.spec-metric-sub {
  font-size: 0.78rem;
  color: #4f46e5;
  font-weight: 600;
}
.spec-rule-callout {
  background: #f8fafc;
  border-left: 4px solid #4f46e5;
  border-radius: 0 12px 12px 0;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.02);
}
.spec-rule-badge {
  background: #4f46e5;
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  white-space: nowrap;
}
.spec-rule-callout p {
  margin: 0;
  font-size: 0.88rem;
  color: #334155;
  line-height: 1.5;
  font-weight: 500;
}

/* Savings Guide Block */
.spec-savings-block {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border: 1px solid #bbf7d0;
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.06);
}
.spec-savings-badge {
  display: inline-block;
  background: #10b981;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 0.85rem;
}
.spec-savings-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #064e3b;
  margin: 0 0 0.65rem 0;
  line-height: 1.35;
}
.spec-savings-desc {
  font-size: 0.92rem;
  color: #065f46;
  margin: 0 0 1.25rem 0;
  line-height: 1.55;
  max-width: 820px;
}
.spec-savings-compare {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.8);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  border: 1px solid #d1fae5;
}
.spec-compare-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.spec-compare-item .compare-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
}
.spec-compare-item .compare-price {
  font-size: 1.15rem;
  font-weight: 800;
}
.spec-compare-item .compare-price.strikethrough {
  text-decoration: line-through;
  color: #94a3b8;
}
.spec-compare-item .compare-price.highlight {
  color: #059669;
}
.spec-compare-arrow {
  font-size: 1.25rem;
  color: #10b981;
  font-weight: 800;
}
.compare-save-pill {
  background: #dcfce7;
  color: #15803d;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-top: 0.25rem;
  align-self: flex-start;
}

/* Related Specs Grid */
.spec-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.spec-related-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-md, 12px);
  padding: 1.15rem 1.15rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  transition: all 0.2s ease;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.03);
}
.spec-related-card:hover {
  border-color: #4f46e5;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.08);
}
.spec-related-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.spec-related-name {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text, #0f172a);
}
.spec-related-badge {
  font-size: 0.7rem;
  font-weight: 800;
  color: #4f46e5;
  background: #eef2ff;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}
.spec-related-meta {
  font-size: 0.8rem;
  color: var(--text-muted, #64748b);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.spec-related-dot {
  font-size: 0.65rem;
}

/* E-E-A-T Regulatory Authority Block */
.spec-eeat-authority-block {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
}
.spec-eeat-inner {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}
.spec-eeat-seal {
  font-size: 2.5rem;
  line-height: 1;
}
.spec-eeat-content {
  flex: 1;
}
.spec-eeat-badge {
  display: inline-block;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  color: #475569;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
}
.spec-eeat-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
  margin: 0.25rem 0 0.45rem 0;
}
.spec-eeat-decree {
  font-size: 0.85rem;
  color: #64748b;
  margin: 0;
  line-height: 1.45;
}

@media (max-width: 768px) {
  .spec-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .spec-savings-block {
    padding: 1.25rem;
  }
  .spec-savings-title {
    font-size: 1.15rem;
  }
  .spec-savings-compare {
    gap: 0.75rem;
    padding: 0.85rem;
  }
  .spec-eeat-inner {
    flex-direction: column;
}
}

/* =========================================================================
   SEO Guide Accordion (Folded How-To Guide & Use Cases)
   ========================================================================= */
.seo-guide-accordion {
  width: 100%;
  max-width: 1240px;
  margin: 0.75rem auto;
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  transition: all 0.2s ease;
}
.seo-guide-accordion[open] {
  box-shadow: 0 6px 20px -3px rgba(15, 23, 42, 0.08);
  border-color: #cbd5e1;
}
.seo-guide-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 1.25rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  background: var(--surface-subtle, #f8fafc);
  transition: background 0.15s ease;
}
.seo-guide-summary::-webkit-details-marker {
  display: none;
}
.seo-guide-summary:hover {
  background: var(--surface-hover, #f1f5f9);
}
.seo-guide-summary-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.seo-guide-summary-icon {
  font-size: 1.15rem;
  line-height: 1;
}
.seo-guide-summary-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text, #0f172a);
}
.seo-guide-toggle-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #0284c7;
  background: #e0f2fe;
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  transition: all 0.2s ease;
}
.seo-guide-toggle-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}
.seo-guide-accordion[open] .seo-guide-toggle-arrow {
  transform: rotate(180deg);
}
.seo-guide-content {
  padding: 2rem 1.5rem 1rem 1.5rem;
  border-top: 1px solid var(--border, #e2e8f0);
  animation: fadeInGuide 0.25s ease-out;
}
@keyframes fadeInGuide {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}