.tool-hero {
  padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-10);
  background:
    radial-gradient(circle at 18% 20%, rgba(79, 70, 229, .14), transparent 30%),
    radial-gradient(circle at 84% 16%, rgba(6, 182, 212, .14), transparent 28%),
    linear-gradient(180deg, #fff, var(--surface-soft));
}

.tool-hero__inner,
.tool-workspace {
  display: grid;
  gap: var(--space-6);
}

.upload-panel,
.result-panel,
.state-panel {
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.tool-hero__copy {
  max-width: 720px;
}

.tool-hero__copy p {
  font-size: 1.06rem;
}

.tool-hero__art {
  align-self: center;
  padding: var(--space-4);
  background: rgba(255, 255, 255, .74);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.upload-dropzone {
  position: relative;
  display: grid;
  min-height: 220px;
  place-items: center;
  padding: var(--space-6);
  color: var(--muted);
  background: var(--surface-soft);
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius);
  text-align: center;
}

.upload-dropzone.is-dragging {
  border-color: var(--primary);
  background: var(--primary-50);
}

.upload-dropzone input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-dropzone__content {
  display: grid;
  gap: var(--space-3);
  justify-items: center;
}

.upload-dropzone__icon {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.upload-dropzone__icon svg {
  width: 34px;
  height: 34px;
}

.upload-dropzone strong {
  color: var(--ink);
  font-size: 1.1rem;
}

.upload-dropzone small {
  color: var(--subtle);
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.tool-options {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.tool-option {
  display: grid;
  gap: .35rem;
}

.tool-option input,
.tool-option select,
.tool-option textarea {
  min-height: 44px;
  padding: .7rem .8rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.tool-option label {
  display: flex;
  min-height: 44px;
  align-items: flex-end;
  color: var(--ink);
  font-weight: 850;
}

.tool-option small {
  color: var(--subtle);
}

.tool-option-grid,
.tool-stat-grid {
  display: grid;
  gap: var(--space-3);
}

.tool-privacy-note,
.tool-alert,
.tool-result-notice {
  padding: var(--space-4);
  border-radius: var(--radius);
}

.tool-privacy-note {
  margin-top: var(--space-5);
  color: var(--muted);
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.tool-alert {
  margin-bottom: var(--space-5);
  color: #7f1d1d;
  background: #fef2f2;
  border: 1px solid #fecaca;
}

.tool-alert p:last-child,
.tool-result-notice p:last-child,
.tool-privacy-note p:last-child {
  margin-bottom: 0;
}

.tool-result-notice {
  margin-bottom: var(--space-5);
  color: #064e3b;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
}

.tool-result-notice--warning {
  color: #713f12;
  background: #fffbeb;
  border-color: #fde68a;
}

.tool-stat {
  padding: var(--space-4);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tool-stat span,
.tool-checklist span {
  display: block;
  color: var(--subtle);
  font-size: .86rem;
  font-weight: 800;
  text-transform: uppercase;
}

.tool-stat strong {
  color: var(--ink);
  font-size: 1.18rem;
}

.tool-checklist {
  display: grid;
  gap: var(--space-3);
}

.tool-checklist li {
  position: relative;
  padding-left: 1.45rem;
  color: var(--muted);
}

.tool-checklist li::before {
  content: "";
  position: absolute;
  top: .58rem;
  left: 0;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: 999px;
}

.tool-sidebar {
  display: grid;
  gap: var(--space-4);
}

.state-panel {
  display: none;
}

.state-panel.is-active {
  display: block;
}

.tool-result-notice .btn {
  margin-top: var(--space-4);
}

.tool-option--wide {
  grid-column: 1 / -1;
}

.tool-content {
  max-width: 1040px;
}

.tool-content__grid {
  display: grid;
  gap: var(--space-5);
}

.tool-content__section {
  padding: var(--space-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.tool-content__section h3 {
  font-size: 1.12rem;
}

.blog-layout {
  display: grid;
  gap: var(--space-6);
}

.blog-toc {
  display: grid;
  gap: .35rem;
  align-content: start;
  padding: var(--space-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.blog-toc h2 {
  margin-bottom: var(--space-2);
  font-size: 1rem;
}

.blog-toc a {
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--muted);
  font-weight: 800;
}

.blog-content {
  display: grid;
  gap: var(--space-7);
}

.blog-content section {
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--line);
}

.blog-content section:last-child {
  border-bottom: 0;
}

.blog-content ul {
  display: grid;
  gap: .65rem;
  margin: var(--space-4) 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.blog-card-grid {
  display: grid;
  gap: var(--space-5);
}

.blog-card {
  display: grid;
  align-content: start;
  gap: var(--space-3);
  padding: var(--space-5);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(255, 255, 255, .99)),
    linear-gradient(135deg, color-mix(in srgb, var(--category-color) 16%, #fff), #fff);
  border: 1px solid var(--line);
  border-top: 4px solid var(--category-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.blog-card h2 {
  font-size: 1.25rem;
}

.blog-card p {
  margin-bottom: var(--space-2);
}

@media (min-width: 920px) {
  .tool-hero__inner,
  .tool-workspace {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
}

@media (min-width: 640px) {
  .tool-option-grid,
  .tool-stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .blog-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .tool-content__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
  }

  .blog-toc {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }

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