* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--tt-bg, #f5f7fb);
  color: var(--tt-text, #172033);
  font-family: var(--tt-font, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);
}
.page-shell {
  width: min(100% - 32px, var(--tt-maxw, 1120px));
  margin: 24px auto 48px;
}
.tool-card {
  background: var(--tt-surface, #ffffff);
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: var(--tt-radius, 12px);
  box-shadow: var(--tt-shadow, 0 12px 30px rgba(23,32,51,.08));
  padding: 24px;
}
.hero-row, .workspace {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 340px);
  gap: var(--tt-gap, 18px);
  align-items: start;
}
h1 { margin: 0 0 8px; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.lede { margin: 0; color: var(--tt-muted, #5d6b82); }
.privacy-badge, .notice {
  background: var(--tt-primary-soft, #e9f1ff);
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: var(--tt-radius, 12px);
  padding: 12px;
  color: var(--tt-text, #172033);
}
.upload-panel {
  margin: 20px 0;
  padding: 16px;
  background: var(--tt-surface-soft, #fbfdff);
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: var(--tt-radius, 12px);
}
label { display: block; font-weight: 700; margin-bottom: 6px; }
input, textarea {
  width: 100%;
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--tt-text, #172033);
  background: var(--tt-surface, #ffffff);
  font: inherit;
}
input[type="file"] { padding: 10px; }
.hint, .status { color: var(--tt-muted, #5d6b82); margin: 8px 0 0; }
.error { color: var(--tt-danger, #b42318); min-height: 1.4em; margin: 8px 0 0; font-weight: 700; }
.edit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--tt-gap, 18px);
}
.field.wide { grid-column: 1 / -1; }
output {
  display: block;
  min-height: 42px;
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--tt-surface-soft, #fbfdff);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.side-panel { display: grid; gap: 14px; }
.actions { display: grid; gap: 10px; }
button, .download {
  border: 0;
  border-radius: 10px;
  padding: 11px 14px;
  background: var(--tt-primary, #2563eb);
  color: var(--tt-surface, #ffffff);
  font: inherit;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
button:hover, .download:hover { background: var(--tt-primary-dark, #1d4ed8); }
.download:not([href]) { opacity: .65; cursor: default; }
.outputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--tt-gap, 18px);
  margin-top: 22px;
}
.outputs section {
  border: 1px solid var(--tt-line, #d9e1ef);
  border-radius: var(--tt-radius, 12px);
  background: var(--tt-surface-soft, #fbfdff);
  padding: 14px;
}
h2 { margin: 0 0 8px; font-size: 1rem; }
pre { margin: 0; white-space: pre-wrap; word-break: break-word; font-size: .86rem; }
.below-copy { margin-top: 22px; color: var(--tt-muted, #5d6b82); }
@media (max-width: 820px) {
  .hero-row, .workspace, .outputs, .edit-grid { grid-template-columns: 1fr; }
}