.format-lab-main {
  max-width: 1120px;
  padding-top: clamp(34px, 6vw, 68px);
  padding-bottom: 80px;
}

.format-lab-main [hidden] {
  display: none !important;
}

.lab-breadcrumb {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: .88rem;
  font-weight: 650;
}

.lab-hero {
  max-width: 800px;
  margin-bottom: 34px;
}

.lab-eyebrow,
.lab-step {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.lab-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 7vw, 4.65rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.lab-intro {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.03rem, 2vw, 1.18rem);
}

.lab-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 22px 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: .86rem;
  font-weight: 700;
  list-style: none;
}

.lab-trust li { display: inline-flex; align-items: center; gap: 7px; }
.lab-trust span { color: var(--ok); }

.lab-card,
.lab-article > section {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.lab-card { padding: clamp(20px, 4vw, 38px); }

.lab-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.lab-heading h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 2rem); }

.lab-privacy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: .82rem;
  font-weight: 750;
}

.lab-privacy span { color: var(--ok); font-size: .65rem; }

.lab-dropzone {
  display: grid;
  min-height: 230px;
  place-items: center;
  align-content: center;
  gap: 8px;
  padding: 28px;
  border: 2px dashed var(--dropzone-border);
  border-radius: 18px;
  background: var(--dropzone);
  text-align: center;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.lab-dropzone:hover,
.lab-dropzone.is-dragging { border-color: var(--brand); background: var(--dropzone-hover); }
.lab-dropzone.is-dragging { transform: scale(.995); }
.lab-dropzone svg { width: 42px; fill: none; stroke: var(--brand); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.lab-dropzone strong { margin-top: 4px; font-size: 1.08rem; }
.lab-dropzone span { color: var(--muted); font-size: .84rem; }

.lab-controls {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(220px, .8fr) auto;
  gap: 24px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--dropzone);
}

.lab-source { display: grid; min-width: 0; grid-template-columns: 62px minmax(0, 1fr) auto; gap: 12px; align-items: center; }
.lab-source img { width: 62px; height: 62px; object-fit: cover; border: 1px solid var(--line); border-radius: 12px; background: var(--seg); }
.lab-source strong,
.lab-source span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lab-source span { margin-top: 3px; color: var(--muted); font-size: .78rem; }
.lab-text-button { padding: 8px 0; border: 0; background: transparent; color: var(--brand); font: inherit; font-size: .82rem; font-weight: 750; cursor: pointer; }

.lab-setting label { display: flex; justify-content: space-between; gap: 16px; font-size: .85rem; font-weight: 750; }
.lab-setting input { width: 100%; }
.lab-setting output { color: var(--brand); }
.lab-setting p { margin: 0; color: var(--muted); font-size: .72rem; }

.lab-status { margin: 16px 2px 0; color: var(--ink-soft); font-size: .86rem; }
.lab-status.is-error { color: var(--danger); }

.lab-results { margin-top: 28px; }

.result-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}

.result-summary div { padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--dropzone); }
.result-summary span,
.result-summary strong { display: block; }
.result-summary span { color: var(--muted); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.result-summary strong { margin-top: 4px; font-size: 1.18rem; }

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
.table-scroll table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table-scroll caption { position: absolute; overflow: hidden; width: 1px; height: 1px; clip: rect(0 0 0 0); white-space: nowrap; }
.table-scroll th,
.table-scroll td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.table-scroll th { background: var(--dropzone); color: var(--ink-soft); font-size: .75rem; letter-spacing: .03em; text-transform: uppercase; }
.table-scroll tr:last-child td { border-bottom: 0; }
.format-name { display: flex; align-items: center; gap: 9px; font-weight: 800; }
.format-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--brand); }
.format-dot.png { background: var(--accent); }
.format-dot.webp { background: var(--warn); }
.format-dot.avif { background: #ec4899; }
.saving-positive { color: var(--ok); font-weight: 750; }
.saving-negative { color: var(--danger); font-weight: 750; }
.unsupported { color: var(--muted); font-style: italic; }
.download-result { display: inline-flex; min-height: 36px; align-items: center; justify-content: center; padding: 7px 11px; border: 1px solid var(--line); border-radius: 9px; color: var(--brand); background: var(--control); font-size: .78rem; font-weight: 750; }
.lab-footnote { margin: 10px 2px 0; color: var(--muted); font-size: .75rem; }

.lab-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

.preview-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin-top: 24px; }
.preview-card { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--dropzone); }
.preview-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background-color: #f0f1f6; background-image: linear-gradient(45deg, #dfe1e9 25%, transparent 25%), linear-gradient(-45deg, #dfe1e9 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #dfe1e9 75%), linear-gradient(-45deg, transparent 75%, #dfe1e9 75%); background-position: 0 0, 0 8px, 8px -8px, -8px 0; background-size: 16px 16px; }
.preview-card div { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 11px 12px; }
.preview-card strong { font-size: .84rem; }
.preview-card span { color: var(--muted); font-size: .75rem; }

.lab-article { display: grid; gap: 20px; margin-top: 24px; }
.lab-article > section { padding: clamp(24px, 5vw, 42px); }
.lab-article h2 { margin: 0 0 12px; font-size: clamp(1.35rem, 3vw, 1.85rem); letter-spacing: -.025em; }
.lab-article p,
.lab-article li { color: var(--ink-soft); }
.lab-article ol { padding-left: 22px; }
.lab-article li + li { margin-top: 8px; }

.choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 22px; }
.choice-grid > div { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--dropzone); }
.choice-grid strong { font-size: 1.02rem; }
.choice-grid p { margin: 7px 0 0; font-size: .9rem; }

.method-card { border-color: color-mix(in srgb, var(--brand) 28%, var(--line)) !important; background: linear-gradient(145deg, color-mix(in srgb, var(--brand) 7%, var(--surface)), var(--surface) 60%) !important; }
.method-card cite { color: var(--ink); }

.next-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.next-actions a { display: flex; min-height: 120px; flex-direction: column; gap: 8px; padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--dropzone); transition: transform 160ms ease, border-color 160ms ease; }
.next-actions a:hover { border-color: var(--brand); transform: translateY(-2px); }
.next-actions span { color: var(--ink-soft); font-size: .86rem; }

.lab-article details { border-top: 1px solid var(--line); }
.lab-article details:last-child { border-bottom: 1px solid var(--line); }
.lab-article summary { padding: 16px 0; color: var(--ink); font-weight: 750; cursor: pointer; }
.lab-article details p { margin-top: -5px; padding-bottom: 16px; }

.visually-hidden { position: absolute; overflow: hidden; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; clip: rect(0 0 0 0); white-space: nowrap; }

@media (max-width: 820px) {
  .lab-controls { grid-template-columns: 1fr; }
  .lab-controls > .btn { width: 100%; }
  .next-actions { grid-template-columns: 1fr; }
  .next-actions a { min-height: 0; }
}

@media (max-width: 640px) {
  .format-lab-main { padding-top: 28px; padding-bottom: 56px; }
  .lab-heading { display: block; }
  .lab-privacy { margin-top: 8px; }
  .lab-dropzone { min-height: 200px; padding: 24px 16px; }
  .lab-source { grid-template-columns: 54px minmax(0, 1fr); }
  .lab-source img { width: 54px; height: 54px; }
  .lab-source .lab-text-button { grid-column: 1 / -1; justify-self: start; }
  .result-summary { grid-template-columns: 1fr; }
  .choice-grid { grid-template-columns: 1fr; }
  .table-scroll th,
  .table-scroll td { padding: 12px; }
  .lab-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .lab-dropzone,
  .next-actions a { transition: none; }
}