.tool-page .page-hero {
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 92%, var(--tool-accent, var(--green)) 8%), transparent);
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 1.25rem;
  align-items: start;
}

.tool-panel,
.tool-sidebar-card,
.tool-content-card,
.tool-faq-item,
.related-card,
.serp-preview,
.metric-card,
.table-wrap,
.notice-box,
.download-card,
.preview-card,
.generated-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.tool-panel,
.tool-sidebar-card,
.tool-content-card,
.notice-box,
.download-card,
.preview-card,
.generated-card,
.table-wrap {
  padding: 1.15rem;
}

.tool-panel h2,
.tool-sidebar-card h2,
.tool-content-card h2,
.related-card h3,
.tool-faq-item summary {
  margin-top: 0;
}

.tool-shell {
  display: grid;
  gap: 1rem;
}

.tool-controls,
.tool-output-shell,
.tool-helper-grid,
.metric-grid,
.compare-grid,
.download-grid,
.example-grid,
.related-grid,
.keyword-density-grid,
.schema-grid {
  display: grid;
  gap: 1rem;
}

.tool-helper-grid,
.example-grid,
.related-grid,
.keyword-density-grid,
.schema-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .95rem;
}

.field,
.field-stack {
  display: grid;
  gap: .45rem;
}

.field-span-2 {
  grid-column: 1 / -1;
}

.field label,
.field-stack label,
.output-label,
.mini-label {
  font-weight: 700;
  font-size: .95rem;
}

.field small,
.field-stack small,
.muted-note,
.output-meta,
.example-note,
.keyword-help {
  color: var(--muted);
  font-size: .9rem;
}

.tool-page textarea,
.tool-page input,
.tool-page select {
  width: 100%;
}

.tool-page select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: .95rem 1rem;
  outline: none;
}

.tool-page select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(36, 85, 230, .15);
}

.textarea-lg {
  min-height: 220px;
  resize: vertical;
}

.textarea-md {
  min-height: 160px;
  resize: vertical;
}

.code-output,
.result-output {
  width: 100%;
  min-height: 240px;
  resize: vertical;
  white-space: pre-wrap;
}

.result-output.short {
  min-height: 150px;
}

.action-row,
.inline-actions,
.preview-badges,
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
}

.action-row {
  padding-top: .5rem;
}

.btn-outline {
  background: transparent;
  border-color: var(--line);
}

.btn-outline:hover {
  background: var(--surface-2);
}

.metric-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card {
  padding: 1rem;
}

.metric-card strong {
  display: block;
  font-size: 1.4rem;
  line-height: 1.1;
  margin-top: .2rem;
}

.notice-box {
  border-left: 4px solid var(--tool-accent, var(--green));
}

.status-success,
.status-warning,
.status-danger,
.status-info,
.tool-chip,
.preview-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  border-radius: 999px;
  padding: .45rem .8rem;
  font-size: .85rem;
  border: 1px solid transparent;
}

.tool-chip,
.preview-badge,
.status-info {
  background: color-mix(in srgb, var(--tool-accent, var(--green)) 12%, var(--surface) 88%);
  border-color: color-mix(in srgb, var(--tool-accent, var(--green)) 38%, var(--line) 62%);
}

.status-success {
  background: rgba(14, 164, 111, .14);
  border-color: rgba(14, 164, 111, .35);
}

.status-warning {
  background: rgba(255, 185, 46, .16);
  border-color: rgba(255, 185, 46, .35);
}

.status-danger {
  background: rgba(255, 88, 88, .14);
  border-color: rgba(255, 88, 88, .35);
}

.preview-card,
.serp-preview {
  display: grid;
  gap: .55rem;
}

.preview-url,
.preview-domain {
  color: var(--green);
  font-size: .95rem;
}

.preview-title,
.serp-title {
  font-size: 1.35rem;
  line-height: 1.25;
  color: #8ab4f8;
  text-decoration: none;
}

.preview-description,
.serp-description {
  color: var(--muted);
}

.table-wrap {
  overflow: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.data-table th,
.data-table td {
  padding: .85rem .8rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.data-table th {
  background: color-mix(in srgb, var(--surface-2) 85%, var(--tool-accent, var(--green)) 15%);
}

.diff-box {
  background: var(--surface-2);
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.ad-slot {
  min-height: 120px;
  display: grid;
  place-items: center;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 85%, transparent 15%);
  padding: 1.2rem;
}

.tool-faq-list {
  display: grid;
  gap: .9rem;
}

.tool-faq-item {
  list-style: none;
  padding: 1rem 1.15rem;
}

.tool-faq-item summary {
  cursor: pointer;
  font-weight: 700;
}

.related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.related-card {
  padding: 1rem;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--tool-accent, var(--green)) 45%, var(--line) 55%);
  box-shadow: var(--shadow);
}

.related-card p {
  color: var(--muted);
  margin-bottom: 0;
}

.download-grid {
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.download-card {
  display: grid;
  gap: .6rem;
  justify-items: start;
}

.favicon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
}

.favicon-item {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1rem;
  text-align: center;
}

.favicon-item img,
.favicon-item canvas {
  width: 72px;
  height: 72px;
  margin: 0 auto .75rem;
  object-fit: contain;
  background: rgba(255,255,255,.04);
  border-radius: 16px;
}

.highlight-list,
.example-list,
.benefit-list,
.guide-list {
  margin: 0;
  padding-left: 1.2rem;
}

.highlight-list li,
.example-list li,
.benefit-list li,
.guide-list li {
  margin-bottom: .5rem;
}

.tool-page .site-card {
  height: 100%;
}

.category-search {
  max-width: 560px;
  margin: 0 auto 1.4rem;
}

@media (max-width: 1100px) {
  .tool-layout,
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .tool-layout,
  .field-grid,
  .metric-grid,
  .tool-helper-grid,
  .example-grid,
  .related-grid,
  .compare-grid,
  .keyword-density-grid,
  .schema-grid {
    grid-template-columns: 1fr;
  }

  .field-span-2 {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .tool-panel,
  .tool-sidebar-card,
  .tool-content-card,
  .tool-faq-item,
  .preview-card,
  .table-wrap,
  .download-card,
  .notice-box,
  .generated-card {
    padding: 1rem;
  }

  .action-row,
  .inline-actions,
  .preview-badges,
  .pill-list {
    gap: .55rem;
  }

  .tool-page .btn {
    width: 100%;
  }
}