/* ============================================================
   CrossKit tool pages — Western SaaS chrome
   Tokens come from design-system.css. Keep class names stable.
   ============================================================ */

.tool-shell {
  padding: 96px 0 72px;
  background: var(--bg-secondary, #fafafa);
  min-height: 100vh;
  position: relative;
}
.tool-shell .container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.breadcrumb-nav { margin-bottom: 24px; }
.breadcrumb-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary, #52525b);
  font-weight: 500;
  font-size: .875rem;
  text-decoration: none;
  padding: 6px 0;
  transition: color .15s ease;
}
.breadcrumb-nav a:hover { color: var(--brand, #4f46e5); gap: 10px; }

.tool-header {
  text-align: left;
  margin-bottom: 28px;
  max-width: 720px;
}
.tool-header h1 {
  font-size: clamp(1.75rem, 3.4vw, 2.25rem);
  color: var(--text-primary, #18181b);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.2;
}
.tool-header h1 .tool-icon-wrap {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft, #eef2ff);
  color: var(--brand, #4f46e5);
  border-radius: 10px;
  flex-shrink: 0;
  border: 1px solid transparent;
}
.tool-header h1 .tool-icon-wrap i {
  color: var(--brand, #4f46e5);
  font-size: 1.15rem;
}
.tool-header p {
  color: var(--text-secondary, #52525b);
  font-size: 1.0625rem;
  max-width: 640px;
  margin: 0;
  line-height: 1.65;
}

.tool-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-primary, #fff);
  border-radius: 999px;
  border: 1px solid var(--border-color, #e4e4e7);
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-secondary, #52525b);
}
.stat-item i { color: var(--brand, #4f46e5); font-size: .9rem; }
.stat-value { color: var(--text-primary, #18181b); font-weight: 600; }

.features-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.feature-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-primary, #fff);
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-secondary, #52525b);
}
.feature-badge i { color: var(--brand, #4f46e5); font-size: .85em; }

.tool-subtabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  padding: 4px;
  background: var(--gray-100, #f4f4f5);
  border-radius: 10px;
  width: fit-content;
  max-width: 100%;
}
.subtab-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary, #52525b);
  font-weight: 500;
  cursor: pointer;
  border-radius: 8px;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
  font-size: .875rem;
  white-space: nowrap;
  font-family: inherit;
}
.subtab-btn:hover { color: var(--text-primary, #18181b); }
.subtab-btn.active {
  background: var(--bg-primary, #fff);
  color: var(--text-primary, #18181b);
  box-shadow: 0 1px 2px rgba(0,0,0,.06);
  font-weight: 600;
}

.tool-card {
  background: var(--bg-primary, #fff);
  border-radius: 14px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.02);
  margin-bottom: 32px;
  border: 1px solid var(--border-color, #e4e4e7);
}
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 768px) { .tool-grid { grid-template-columns: 1fr; gap: 24px; } }

.tool-card-single {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.form-group > label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--text-primary, #18181b);
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-group > label i { color: var(--brand, #4f46e5); font-size: .9em; }
.form-group > label .required { color: #ef4444; margin-left: 2px; }
.form-hint {
  font-size: .8125rem;
  color: var(--text-muted, #71717a);
  margin-top: -4px;
  line-height: 1.5;
}

input[type="text"],
input[type="url"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 10px;
  font-size: .9375rem;
  font-family: inherit;
  color: var(--text-primary, #18181b);
  background: var(--bg-primary, #fff);
  transition: border-color .15s ease, box-shadow .15s ease;
  box-sizing: border-box;
}
textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
input:focus, textarea:focus, select:focus {
  border-color: var(--brand, #4f46e5);
  outline: none;
  box-shadow: 0 0 0 3px var(--brand-soft, #eef2ff);
}
input::placeholder, textarea::placeholder { color: var(--gray-400, #a1a1aa); }
input:disabled, textarea:disabled, select:disabled {
  opacity: .6;
  cursor: not-allowed;
  background: var(--bg-secondary, #fafafa);
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .row-2, .row-3 { grid-template-columns: 1fr; } }

.tool-shell .btn,
.tool-card .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: .9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease;
  text-decoration: none;
  font-family: inherit;
  position: relative;
}
.tool-shell .btn-primary,
.tool-card .btn-primary {
  background: var(--brand, #4f46e5);
  color: #fff;
  border-color: var(--brand, #4f46e5);
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
}
.tool-shell .btn-primary:hover,
.tool-card .btn-primary:hover {
  background: var(--brand-strong, #4338ca);
  border-color: var(--brand-strong, #4338ca);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -4px rgba(79, 70, 229, .35);
}
.tool-shell .btn-primary:active,
.tool-card .btn-primary:active { transform: translateY(0); }
.tool-shell .btn-secondary,
.tool-card .btn-secondary {
  background: #fff;
  color: var(--text-primary, #18181b);
  border: 1px solid var(--border-color, #e4e4e7);
}
.tool-shell .btn-secondary:hover,
.tool-card .btn-secondary:hover {
  background: var(--bg-secondary, #fafafa);
  border-color: var(--gray-400, #a1a1aa);
}
.tool-shell .btn-success { background: var(--accent-2, #10b981); color: #fff; border-color: var(--accent-2, #10b981); }
.tool-shell .btn-outline {
  background: #fff;
  color: var(--text-primary, #18181b);
  border: 1px solid var(--border-color, #e4e4e7);
}
.tool-shell .btn-outline:hover {
  border-color: var(--brand, #4f46e5);
  color: var(--brand, #4f46e5);
  background: var(--brand-soft, #eef2ff);
}
.btn-sm { padding: 8px 14px; font-size: .8125rem; }
.btn-lg { padding: 12px 22px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-loading { pointer-events: none; }
.btn-loading .btn-text { opacity: 0; }
.btn-loading .btn-spinner {
  display: block;
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.btn .btn-spinner { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.result-box {
  background: var(--bg-secondary, #fafafa);
  border: 1px dashed var(--border-color, #e4e4e7);
  border-radius: 12px;
  padding: 24px;
  margin-top: 8px;
  word-break: break-all;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted, #71717a);
}
.result-box.has-content {
  border-style: solid;
  border-color: #a7f3d0;
  background: #f0fdf4;
  display: block;
  color: inherit;
}
.result-box .result-placeholder { text-align: center; }
.result-box .result-placeholder i {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 8px;
  color: var(--gray-300, #d4d4d8);
}
.result-url {
  font-family: ui-monospace, "SF Mono", Monaco, Consolas, monospace;
  font-size: .9rem;
  color: var(--text-primary, #18181b);
  background: #fff;
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 14px;
  word-break: break-all;
  line-height: 1.5;
}
.result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #fff;
  border: 1px solid var(--border-color, #e4e4e7);
  color: var(--text-primary, #18181b);
  border-radius: 8px;
  font-weight: 600;
  font-size: .8125rem;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
  font-family: inherit;
}
.copy-btn:hover {
  border-color: var(--brand, #4f46e5);
  color: var(--brand, #4f46e5);
  background: var(--brand-soft, #eef2ff);
}
.copy-btn.copied { background: #10b981; border-color: #10b981; color: #fff; }

.output-text {
  width: 100%;
  min-height: 160px;
  padding: 14px;
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 10px;
  font-family: ui-monospace, "SF Mono", Monaco, Consolas, monospace;
  font-size: .875rem;
  background: var(--bg-secondary, #fafafa);
  color: var(--text-primary, #18181b);
  resize: vertical;
  box-sizing: border-box;
  line-height: 1.6;
}
.output-text.has-content {
  border-color: #a7f3d0;
  background: #f0fdf4;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--brand-soft, #eef2ff);
  border: 1px solid transparent;
  color: var(--brand-strong, #4338ca);
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
  user-select: none;
}
.tag-chip:hover,
.tag-chip.selected {
  background: var(--brand, #4f46e5);
  color: #fff;
}

.result-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.result-card {
  background: #fff;
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 12px;
  padding: 18px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.result-card:hover {
  border-color: var(--gray-300, #d4d4d8);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,.08);
}
.result-card .card-keyword {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary, #18181b);
  margin-bottom: 8px;
}
.result-card .card-meta {
  display: flex;
  gap: 16px;
  font-size: .8125rem;
  color: var(--text-secondary, #52525b);
}
.result-card .card-meta span { display: flex; align-items: center; gap: 4px; }
.result-card .card-meta i { color: var(--brand, #4f46e5); font-size: .85em; }
.result-card .card-trend { color: #10b981; }
.result-card .card-trend.down { color: #ef4444; }

.result-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  border: 1px solid var(--border-color, #e4e4e7);
}
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
  min-width: 600px;
}
.result-table th, .result-table td {
  border-bottom: 1px solid var(--border-color, #e4e4e7);
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
}
.result-table th {
  background: var(--bg-secondary, #fafafa);
  color: var(--text-muted, #71717a);
  font-weight: 600;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  position: sticky;
  top: 0;
}
.result-table tr:last-child td { border-bottom: none; }
.result-table tr:hover td { background: var(--bg-secondary, #fafafa); }
.status-ok { color: #059669; font-weight: 600; }
.status-bad { color: #dc2626; font-weight: 600; }
.status-warn { color: #d97706; font-weight: 600; }

.upload-area {
  border: 1px dashed var(--gray-300, #d4d4d8);
  border-radius: 14px;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-secondary, #fafafa);
  transition: border-color .15s ease, background .15s ease;
}
.upload-area:hover, .upload-area.dragover {
  border-color: var(--brand, #4f46e5);
  background: var(--brand-soft, #eef2ff);
}
.upload-area i { font-size: 1.75rem; color: var(--brand, #4f46e5); margin-bottom: 12px; display: block; }
.upload-area .upload-title { font-weight: 600; color: var(--text-primary, #18181b); margin-bottom: 4px; }
.upload-area p { color: var(--text-secondary, #52525b); margin: 4px 0; font-size: .875rem; }
.upload-area input[type="file"] { display: none; }

.tips-section {
  background: #fff;
  border-radius: 14px;
  padding: 36px 32px;
  margin-bottom: 32px;
  border: 1px solid var(--border-color, #e4e4e7);
}
.tips-section h2 {
  text-align: left;
  color: var(--text-primary, #18181b);
  margin-bottom: 24px;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -.02em;
}
.tips-section h2 i { color: var(--brand, #4f46e5); }
.tips-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.tip-item {
  text-align: left;
  padding: 20px;
  background: var(--bg-secondary, #fafafa);
  border-radius: 12px;
  border: 1px solid var(--border-color, #e4e4e7);
}
.tip-item i {
  font-size: 1.1rem;
  color: var(--brand, #4f46e5);
  margin-bottom: 12px;
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft, #eef2ff);
  border-radius: 8px;
}
.tip-item h3 { color: var(--text-primary, #18181b); font-size: 1rem; margin-bottom: 6px; font-weight: 600; }
.tip-item p { color: var(--text-secondary, #52525b); font-size: .875rem; line-height: 1.55; margin: 0; }

.tool-faq { margin-bottom: 36px; }
.tool-faq h2 {
  color: var(--text-primary, #18181b);
  margin-bottom: 16px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-color, #e4e4e7);
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-item:hover { border-color: var(--gray-300, #d4d4d8); }
.faq-question {
  padding: 16px 20px;
  font-weight: 600;
  color: var(--text-primary, #18181b);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .9375rem;
  user-select: none;
}
.faq-question i { transition: transform .2s ease; color: var(--text-muted, #71717a); }
.faq-item.open .faq-question i { transform: rotate(180deg); color: var(--brand, #4f46e5); }
.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: all .25s ease;
  color: var(--text-secondary, #52525b);
  font-size: .9rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  padding: 0 20px 16px;
  max-height: 300px;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted, #71717a);
}
.empty-state i { font-size: 2rem; margin-bottom: 14px; display: block; color: var(--gray-300, #d4d4d8); }
.empty-state h3 { color: var(--text-secondary, #52525b); font-size: 1.05rem; margin-bottom: 6px; }
.empty-state p { font-size: .875rem; }

.skeleton {
  background: linear-gradient(90deg, #e4e4e7 25%, #f4f4f5 50%, #e4e4e7 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 8px;
}
.skeleton-text { height: 16px; margin-bottom: 10px; }
.skeleton-text.short { width: 60%; }
.skeleton-title { height: 24px; width: 40%; margin-bottom: 16px; }
.skeleton-card { height: 120px; border-radius: 12px; }
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: .875rem;
  font-weight: 500;
  color: #fff;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,.1);
  animation: toastIn .25s ease;
  min-width: 260px;
  max-width: 420px;
}
.toast.success { background: #059669; }
.toast.error { background: #dc2626; }
.toast.warning { background: #d97706; }
.toast.info { background: var(--brand, #4f46e5); }
.toast.removing { animation: toastOut .25s ease forwards; }
@keyframes toastIn { from { transform: translateY(-8px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes toastOut { to { transform: translateY(-8px); opacity: 0; } }

.coming-soon {
  text-align: center;
  padding: 56px 24px;
  color: var(--text-secondary, #52525b);
}
.coming-soon i { font-size: 2.5rem; color: var(--gray-300, #d4d4d8); margin-bottom: 16px; display: block; }
.coming-soon h2 { color: var(--text-primary, #18181b); margin-bottom: 8px; }

@media (max-width: 768px) {
  .tool-shell { padding: 88px 0 48px; }
  .tool-shell .container { padding: 0 16px; }
  .tool-card, .tips-section { padding: 22px 16px; }
  .tool-header h1 { font-size: 1.5rem; }
  .tool-header h1 .tool-icon-wrap { width: 40px; height: 40px; }
  .tool-header p { font-size: .95rem; }
  .tool-subtabs { width: 100%; }
  .subtab-btn { padding: 10px 12px; }
  .result-cards { grid-template-columns: 1fr; }
  .toast-container { left: 16px; right: 16px; }
  .toast { min-width: auto; }
  /* Mobile form enlargement */
  input[type="text"], input[type="url"], input[type="number"],
  input[type="email"], input[type="password"], input[type="search"],
  textarea, select {
    font-size: 1rem;           /* ≥16px prevents iOS zoom on focus */
    padding: 12px 16px;
  }
  textarea { min-height: 140px; }
  .form-group { margin-bottom: 20px; }
  .form-group > label { font-size: .875rem; }
  .btn { padding: 12px 20px; font-size: .95rem; min-height: 44px; }
  .btn-sm { padding: 10px 16px; font-size: .875rem; min-height: 40px; }
  .btn-block { min-height: 48px; }
  .copy-btn { width: 100%; justify-content: center; }
  .btn-row { gap: 8px; }
  .btn-row label { font-size: .875rem; }
  .ck-batch-section-inner { padding: 16px; }
  .ck-batch-results table { font-size: .8rem; }
  .ck-batch-results th, .ck-batch-results td { padding: 8px; }
  /* Fix checkbox label alignment */
  .btn-row input[type="checkbox"] { width: 18px; height: 18px; margin-right: 4px; }
}
@media (max-width: 480px) {
  .tool-shell { padding: 78px 0 36px; }
  .tool-shell .container { padding: 0 12px; }
  .tool-header h1 { font-size: 1.35rem; }
  .tips-grid { grid-template-columns: 1fr; }
  .row-2 { grid-template-columns: 1fr; }
  .tool-card { border-radius: 10px; padding: 18px 14px; }
  .features-banner { gap: 6px; }
  .feature-badge { font-size: .75rem; padding: 4px 10px; }
  input[type="text"], input[type="url"], input[type="number"],
  input[type="email"], input[type="password"], input[type="search"],
  textarea, select {
    font-size: 1rem;           /* 16px minimum for iOS */
    padding: 14px 16px;
  }
  textarea { min-height: 150px; }
  .btn { width: 100%; padding: 14px 20px; font-size: 1rem; min-height: 48px; }
  .btn-primary, .btn-secondary, .btn-outline, .btn-success { width: 100%; }
  .breadcrumb-nav a { font-size: .8125rem; }
  .tool-stats { gap: 6px; }
  .stat-item { font-size: .75rem; padding: 4px 10px; }
  /* Output area full width */
  .output-text { min-height: 180px; }
  /* Tag lists more compact */
  .tag-list { gap: 4px; }
  .tag-chip { font-size: .75rem; padding: 4px 10px; }
}

/* ---------- Tool landing anatomy (pain → I/O → steps → FAQ) ---------- */
.ck-tool-anatomy { background: var(--bg-secondary, #fafafa); padding: 72px 0 88px; border-top: 1px solid var(--border-color, #e4e4e7); }
.ck-tool-anatomy-grid { display: grid; grid-template-columns: 1.1fr 0.45fr; gap: 48px; align-items: start; }
.ck-tool-anatomy-main { display: flex; flex-direction: column; gap: 48px; }
.ck-anatomy-block { background: var(--bg-primary, #fff); border: 1px solid var(--border-color, #e4e4e7); border-radius: var(--radius-lg, 16px); padding: 28px; box-shadow: var(--shadow-card, 0 2px 8px rgba(0,0,0,.04)); }
.ck-anatomy-label { display: inline-block; font-size: var(--fs-xs, 12px); font-weight: var(--fw-semibold, 600); letter-spacing: .06em; text-transform: uppercase; color: var(--brand, #4f46e5); background: var(--brand-soft, #eef2ff); padding: 4px 10px; border-radius: var(--radius-pill, 999px); margin-bottom: 14px; }
.ck-anatomy-block h2 { font-size: var(--fs-h2, 1.5rem); font-weight: var(--fw-bold, 700); color: var(--text-primary, #18181b); margin: 0 0 14px; letter-spacing: -0.02em; }
.ck-anatomy-block p { color: var(--text-secondary, #52525b); line-height: 1.7; margin: 0; }
.ck-io-pair { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; margin-top: 18px; }
.ck-io-card { background: var(--bg-secondary, #fafafa); border: 1px solid var(--border-light, #f4f4f5); border-radius: var(--radius-md, 12px); padding: 18px; }
.ck-io-card strong { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm, 14px); color: var(--text-primary, #18181b); margin-bottom: 10px; }
.ck-io-card code { display: block; font-family: var(--font-mono, monospace); font-size: 13px; color: var(--text-secondary, #52525b); line-height: 1.6; white-space: pre-wrap; word-break: break-word; background: transparent; padding: 0; }
.ck-io-input { border-left: 3px solid var(--brand, #4f46e5); }
.ck-io-output { border-left: 3px solid var(--accent-2, #10b981); }
.ck-io-arrow { font-size: 24px; font-weight: 700; color: var(--text-muted, #a1a1aa); }
.ck-steps { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-direction: column; gap: 18px; }
.ck-steps li { display: flex; gap: 16px; align-items: flex-start; }
.ck-step-num { flex: none; width: 36px; height: 36px; border-radius: 50%; background: var(--brand, #4f46e5); color: #fff; display: grid; place-items: center; font-weight: var(--fw-bold, 700); font-size: 14px; }
.ck-steps strong { display: block; font-size: var(--fs-body, 16px); color: var(--text-primary, #18181b); margin-bottom: 4px; }
.ck-steps p { font-size: var(--fs-sm, 14px); margin: 0; }
.ck-tool-anatomy-faq { position: sticky; top: 88px; }
.ck-tool-anatomy-faq h3 { font-size: var(--fs-h3, 1.125rem); font-weight: var(--fw-bold, 700); margin: 0 0 16px; }
.ck-anatomy-faq-list { display: flex; flex-direction: column; gap: 10px; }
.ck-anatomy-faq-list details { background: var(--bg-primary, #fff); border: 1px solid var(--border-color, #e4e4e7); border-radius: var(--radius-md, 12px); padding: 0; }
.ck-anatomy-faq-list summary { cursor: pointer; list-style: none; font-weight: var(--fw-semibold, 600); color: var(--text-primary, #18181b); padding: 16px 18px; display: flex; justify-content: space-between; gap: 12px; }
.ck-anatomy-faq-list summary::-webkit-details-marker { display: none; }
.ck-anatomy-faq-list summary::after { content: "+"; font-size: 18px; color: var(--text-muted, #a1a1aa); font-weight: 400; }
.ck-anatomy-faq-list details[open] summary::after { content: "\2212"; color: var(--brand, #4f46e5); }
.ck-anatomy-faq-list details p { margin: 0; padding: 0 18px 16px; font-size: var(--fs-sm, 14px); color: var(--text-secondary, #52525b); line-height: 1.65; }
.ck-geo-usecases { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
.ck-geo-case { background: var(--bg-secondary, #fafafa); border: 1px solid var(--border-light, #f4f4f5); border-radius: 12px; padding: 16px 18px; }
.ck-geo-case h3 { font-size: 1rem; margin: 0 0 8px; color: var(--text-primary, #18181b); }
.ck-geo-case p { margin: 0; font-size: 14px; }
.ck-geo-platforms { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 16px 0 0; }
.ck-geo-platforms a { display: inline-block; padding: 8px 14px; border: 1px solid var(--border-color, #e4e4e7); border-radius: 999px; text-decoration: none; font-size: 14px; font-weight: 600; color: var(--text-primary, #18181b); background: #fff; }
.ck-geo-platforms a:hover { border-color: var(--brand, #4f46e5); color: var(--brand, #4f46e5); }
.ck-cite-canon {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px; word-break: break-all;
  background: var(--bg-secondary, #fafafa);
  border: 1px solid var(--border-light, #f4f4f5);
  border-radius: 8px; padding: 10px 12px; margin: 0 0 12px !important;
}
.ck-cite-links { margin-top: 12px; }
.ck-tool-anatomy-faq h2 { font-size: var(--fs-h3, 1.125rem); font-weight: var(--fw-bold, 700); margin: 0 0 16px; }
@media (max-width: 900px) {
  .ck-tool-anatomy-grid { grid-template-columns: 1fr; }
  .ck-tool-anatomy-faq { position: static; }
  .ck-io-pair { grid-template-columns: 1fr; }
  .ck-io-arrow { transform: rotate(90deg); justify-self: center; }
  .ck-geo-usecases { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .ck-anatomy-block { padding: 20px; }
  .ck-tool-anatomy { padding: 48px 0 64px; }
}

/* Key Features / Use Cases lists (tool landing SEO blocks) */
.ck-feature-list li, .ck-usecase-list li { align-items: center; gap: 12px; }
.ck-feature-list i.fa-check { color: var(--brand, #4f46e5); flex: none; font-size: 14px; }
.ck-usecase-list i.fa-arrow-right { color: var(--text-tertiary, #71717a); flex: none; font-size: 13px; }
.ck-feature-list span, .ck-usecase-list span { font-size: var(--fs-body, 16px); color: var(--text-primary, #18181b); }