.tool-hero {
  background: linear-gradient(180deg, #ffffff 0%, #f7f9fd 100%);
  border-bottom: 1px solid var(--color-border);
}

.tool-hero .section__inner {
  padding: 38px 0 34px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--color-muted);
  font-size: 14px;
}

.breadcrumb a:hover {
  color: var(--color-blue);
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.75fr);
  gap: 20px;
  align-items: start;
}

.convert-card,
.limit-card,
.support-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.convert-card {
  padding: 26px;
  border-color: #bcd0ff;
  box-shadow: 0 14px 34px rgba(37, 99, 235, 0.10);
}

.limit-card,
.support-card {
  padding: 20px;
  box-shadow: 0 8px 20px rgba(23, 32, 51, 0.05);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0 0 22px;
  list-style: none;
}

.steps li {
  min-height: 86px;
  padding: 16px;
  border: 1px solid #cfe0ff;
  border-radius: 12px;
  background: var(--color-blue-soft);
}

.steps span {
  display: block;
  color: var(--color-blue-dark);
  font-size: 13px;
  font-weight: 700;
}

.steps strong {
  display: block;
  margin-top: 6px;
  font-size: 18px;
}

.upload-box {
  padding: 18px;
  border: 1px dashed #b8c8df;
  border-radius: 14px;
  background: #f8fbff;
}

.upload-label {
  display: block;
  margin-bottom: 12px;
}

.upload-label__title {
  display: block;
  font-size: 18px;
  font-weight: 750;
}

.upload-label__hint {
  display: block;
  margin-top: 4px;
  color: var(--color-muted);
  font-size: 14px;
}

.file-input {
  width: 100%;
  padding: 11px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #ffffff;
  color: var(--color-text);
}

.file-meta {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding: 14px;
  border-radius: 12px;
  background: #ffffff;
}

.file-meta p,
.form-message,
.limit-card p,
.result-placeholder p {
  margin: 0;
  color: var(--color-muted);
}

.form-message {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #eef4ff;
  color: var(--color-blue-dark);
}

.form-message.is-error {
  background: #fff1f2;
  color: #be123c;
}

.form-message.is-warning {
  background: var(--color-amber-soft);
  color: var(--color-amber);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.result-placeholder {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #f8fbff;
}

.result-placeholder h3 {
  margin: 0 0 8px;
}

.limit-card h2,
.support-card h2 {
  margin: 0 0 12px;
  font-size: 22px;
}

.limit-card ul,
.support-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--color-muted);
}

.limit-card li,
.support-card li {
  margin: 6px 0;
}

.limit-card p {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.failure-list,
.related-tools {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.failure-list span,
.related-tools a {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
  box-shadow: 0 4px 14px rgba(23, 32, 51, 0.04);
}

.related-tools a {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
}

.related-tools a:hover {
  color: var(--color-blue);
}

.related-tools span {
  color: var(--color-amber);
  font-size: 13px;
}

@media (max-width: 960px) {
  .tool-layout,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .failure-list,
  .related-tools {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .tool-hero .section__inner {
    padding: 34px 0 36px;
  }

  .convert-card {
    padding: 20px;
  }

  .steps,
  .failure-list,
  .related-tools {
    grid-template-columns: 1fr;
  }

  .file-input {
    font-size: 14px;
  }
}