/* ============================================================
   SONIC CSL TESTING TUBES — Product Page
   Inherits: style.css variables
   ============================================================ */

/* ── 1. HERO ─────────────────────────────────────────────── */
.st-hero {
  position: relative;
  min-height: 580px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
}

/* .rs-hero-overlay defined globally in style.css */

.st-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.st-hero-eyebrow {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--red);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.st-hero-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--red);
  flex-shrink: 0;
}

.st-hero-title {
  font-size: clamp(2.2rem, 3.8vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.05;
  color: #fff;
  margin: 0 0 20px;
  text-transform: uppercase;
}

.st-hero-title em {
  font-style: normal;
  color: #fff;
}

.st-hero-desc {
  font-size: .9rem;
  color: rgba(255,255,255,.72);
  max-width: 480px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.st-hero-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.st-hero-right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.st-hero-img-wrap {
  width: 100%;
  max-width: 460px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 32px 80px rgba(0,0,0,.4);
  background: rgba(255,255,255,.06);
}

.st-hero-img-wrap img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.st-hero-strip {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--text-700));
  z-index: 3;
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .02em;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  border: 2px solid rgba(255,255,255,.3);
  color: rgba(255,255,255,.75);
  background: transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-outline-white:hover {
  border-color: rgba(255,255,255,.6);
  color: #fff;
  background: rgba(255,255,255,.06);
}

/* ── 2. OVERVIEW ─────────────────────────────────────────── */
.st-overview {
  padding: 80px 0;
  background: #fff;
  /* border-top: 3px solid var(--red); */
}

.st-overview-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}

.st-overview-text .label { margin-bottom: 14px; }

.st-overview-text .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 0 0 20px; }

.st-overview-body {
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text-500);
  margin: 0 0 16px;
}

.st-standards {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.st-standard-badge {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text-900);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  background: var(--bg-soft);
  text-transform: uppercase;
}

/* Spec panel */
.st-spec-panel {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.st-spec-metrics {
  background: var(--text-700);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.st-spec-metric {
  padding: 24px 16px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,.07);
}

.st-spec-metric:last-child { border-right: none; }

.st-spec-metric-num {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -.02em;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}

.st-spec-metric-num span {
  font-size: .65em;
  font-weight: 600;
  opacity: .7;
}

.st-spec-metric-label {
  font-size: .65rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgb(206 51 45);
  font-weight: 600;
}

.st-spec-table { display: flex; flex-direction: column; }

.st-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-light);
  gap: 12px;
  transition: background var(--transition);
}

.st-spec-row:last-child { border-bottom: none; }
.st-spec-row-alt { background: var(--bg-soft); }
.st-spec-row:hover { background: var(--bg-muted); }

.st-spec-row-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-500);
  white-space: nowrap;
}

.st-spec-row-value {
  font-size: .85rem;
  font-weight: 700;
  color: var(--text-900);
  text-align: right;
}

/* ── 3. HOW CSL WORKS ────────────────────────────────────── */
.st-csl {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
}

.st-csl-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 56px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-light);
}

.st-csl-header-left { flex: 0 0 auto; }

.st-csl-header .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 8px 0 0; }

.st-csl-header-note {
  flex: 1;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-500);
  margin: 0;
  max-width: 440px;
}

.st-csl-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.st-csl-steps {
  display: flex;
  flex-direction: column;
}

.st-csl-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-light);
}

.st-csl-step:last-child { border-bottom: none; }

.st-csl-step-num {
  flex-shrink: 0;
  background: var(--red);
  color: #fff;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .06em;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.st-csl-step-name {
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--text-900);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.st-csl-step-desc {
  font-size: .875rem;
  line-height: 1.75;
  color: var(--text-500);
  margin: 0;
}

.st-csl-img-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  /* box-shadow: var(--shadow-md); */
  background: var(--bg-muted);
}

.st-csl-img-wrap img {
  width: auto;
  display: block;
  object-fit: contain;
  margin: 0 auto;
}

/* ── 4. MANUFACTURING PROCESS ────────────────────────────── */
.st-mfg {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
}

.st-mfg-header {
  margin-bottom: 56px;
}

.st-mfg-header .label { margin-bottom: 16px; }

.st-mfg-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-light);
}

.st-mfg-header-row .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 0; }

.st-mfg-header-note {
  font-size: .88rem;
  line-height: 1.8;
  color: var(--text-500);
  max-width: 360px;
  margin: 0;
  flex-shrink: 0;
}

.st-mfg-steps {
  display: flex;
  flex-direction: column;
}

.st-mfg-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0 32px;
}

.st-mfg-step-aside {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 5px;
}

.st-mfg-step-num {
  font-size: .80rem;
  font-weight: 800;
  letter-spacing: .05em;
  color: #fff;
  background: var(--red);
  width: 35px;
  height: 35px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.st-mfg-step-line {
  width: 1px;
  flex: 1;
  background: var(--border-light);
  margin: 10px 0 0;
  min-height: 32px;
}

.st-mfg-step:last-child .st-mfg-step-line { display: none; }

.st-mfg-step-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
  padding: 0 0 56px;
}

.st-mfg-step:last-child .st-mfg-step-body { padding-bottom: 0; }

/* Single image layout */
.st-mfg-imgs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Two-image layout: side by side within the 220px column */
.st-mfg-imgs.st-mfg-imgs-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.st-mfg-img-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.st-mfg-step-img-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.st-mfg-step-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}

.st-mfg-step-img-wrap:hover img { transform: scale(1.04); }

.st-mfg-img-caption {
  font-size: .68rem;
  letter-spacing: .04em;
  color: var(--text-500);
  text-align: center;
  line-height: 1.4;
  display: block;
}

.st-mfg-step-content .h-subsection {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  margin: 10px 0 14px;
  text-transform: uppercase;
}

.st-mfg-step-desc {
  font-size: .875rem;
  line-height: 1.75;
  color: var(--text-500);
  margin: 0;
}

/* ── 5. TUBE VARIANTS ────────────────────────────────────── */
.st-variants {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
}

.st-variants-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-light);
}

.st-variants-header .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 8px 0 0; }

.st-variants-note {
  flex: 1;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-500);
  margin: 0;
  max-width: 380px;
}

.st-variants-grid {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.st-variant-row {
  display: grid;
  grid-template-columns: 140px 120px 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 28px 32px;
  transition: filter .15s;
}

.st-variant-row:nth-child(odd)  { background: var(--bg-muted); }
.st-variant-row:nth-child(even) { background: var(--bg-soft); }
.st-variant-row:hover { filter: brightness(.97); }

.st-variant-code {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--red);
  line-height: 1;
}

.st-variant-badge {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-900);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  white-space: nowrap;
  width: fit-content;
}

.st-variant-desc {
  font-size: .88rem;
  line-height: 1.7;
  color: var(--text-500);
  margin: 0;
}

.st-variant-length {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text-900);
  white-space: nowrap;
  text-align: right;
}

/* ── 6. KEY ADVANTAGES ───────────────────────────────────── */
.st-advantages {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
}

.st-advantages-wrap {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 80px;
  align-items: start;
}

.st-advantages-left {
  position: sticky;
  top: 100px;
}

.st-advantages-left .label { margin-bottom: 12px; }

.st-advantages-left .h-section { font-size: clamp(1.6rem, 2.5vw, 2.4rem); margin: 0 0 20px; }

.st-advantages-desc {
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-500);
  margin: 0 0 32px;
}

.st-adv-grid {
  display: flex;
  flex-direction: column;
}

.st-adv-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}

.st-adv-card:last-child { border-bottom: none; }

.st-adv-num {
  flex-shrink: 0;
  background: var(--blue);
  color: #fff;
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .06em;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.st-adv-text {
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--text-900);
  margin: 0;
}

/* ── 7. IN-HOUSE TESTING ─────────────────────────────────── */
.st-testing {
  padding: 80px 0;
  background: #fff;
  border-top: 1px solid var(--border-light);
}

.st-testing-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
  margin-bottom: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-light);
}

.st-testing-header-left { }

.st-testing-header .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 8px 0 0; }

.st-testing-desc {
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text-500);
  margin: 0;
  max-width: 100%;
}

/* 4-col corporate testing grid */
.st-testing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 420px));
  justify-content: center;
  gap: 20px;
}

.st-test-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.st-test-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.st-test-card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--bg-muted);
}

.st-test-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}

.st-test-card:hover .st-test-card-img img {
  transform: scale(1.06);
}

.st-test-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,20,.82) 0%, rgba(10,10,20,.18) 55%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px;
}

.st-test-card-num {
  align-self: flex-start;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .1em;
  color: #fff;
  background: var(--red);
  border-radius: 20px;
  line-height: 25px;
  width: 25px;
  height: 25px;
  text-align: center;
}

.st-test-card-name {
  font-size: .82rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.st-test-card-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  border-top: 2px solid var(--red);
  background: #fff;
}

.st-test-card-foot i {
  font-size: .85rem;
  color: var(--red);
}

/* ── TEST CARD SLIDER ────────────────────────────────────── */
.st-slider { overflow: hidden; }
.st-slide { display: none; width: 100%; height: 100%; }
.st-slide.active { display: block; }
.st-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.st-slider--contain .st-slide img { object-fit: contain; background: var(--bg-soft); }

.st-slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  background: rgba(0,0,0,.45);
  color: #fff;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
}
.st-slider-btn:hover { background: var(--blue); }
.st-slider-prev { left: 8px; }
.st-slider-next { right: 8px; }

.st-slider-dots {
    position: absolute;
    bottom: 20px;
    left: 92%;
    transform: translateX(-50%);
    display: flex;
    gap: 5px;
    z-index: 5;
    min-width: 40px;
    text-align: center;
    justify-content: center;
}
.st-slider-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,.5);
  cursor: pointer;
  transition: background .2s;
}
.st-slider-dot.active { background: #fff; }

/* ── 8. TUBE COMPONENTS ──────────────────────────────────── */
.st-components {
  padding: 80px 0;
  background: #fff;
  border-top: 1px solid var(--border-light);
}

.st-components-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-light);
}

.st-components-header .h-section { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin: 8px 0 0; }

.st-components-note {
  flex: 1;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-500);
  margin: 0;
  max-width: 380px;
}

.st-components-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.st-component-card {
  background: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.st-component-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--text-700));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.st-component-card:hover::after { transform: scaleX(1); }

.st-component-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(200,16,46,.18);
}

.st-component-img {
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: var(--bg-soft);
}

.st-component-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform .5s ease;
}

.st-component-card:hover .st-component-img img { transform: scale(1.06); }

.st-component-body {
  padding: 20px 18px 24px;
  background: var(--bg-muted);
}

.st-component-num {
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 6px;
  display: block;
}

.st-component-body .h-card { margin: 0 0 8px; }

.st-component-desc {
  font-size: .82rem;
  line-height: 1.7;
  color: var(--text-500);
  margin: 0;
}

/* ── 9. CTA ──────────────────────────────────────────────── */
.st-cta {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
}

.st-cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 56px;
}

.st-cta-text .h-section {
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  color: var(--text-700);
  margin: 8px 0 10px;
}

.st-cta-desc {
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-500);
  margin: 0;
  max-width: 540px;
}

.st-cta-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
  flex-shrink: 0;
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 991px) {
  .st-testing-header { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 1024px) {
  .st-components-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  /* Hero */
  .st-hero { padding: 120px 0 64px; min-height: auto; }
  .st-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .st-hero-right { justify-content: flex-start; }
  .st-hero-img-wrap { max-width: 100%; }

  /* Overview */
  .st-overview { padding: 60px 0; }
  .st-overview-grid { grid-template-columns: 1fr; gap: 40px; }

  /* CSL */
  .st-csl { padding: 60px 0; }
  .st-csl-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .st-csl-header-note { max-width: 100%; }
  .st-csl-body { grid-template-columns: 1fr; gap: 40px; }

  /* Manufacturing */
  .st-mfg { padding: 60px 0; }
  .st-mfg-header-row { flex-direction: column; align-items: flex-start; gap: 16px; }
  .st-mfg-header-note { max-width: 100%; }
  .st-mfg-step-body { grid-template-columns: 1fr; gap: 24px; }
  .st-mfg-imgs { max-width: 280px; }
  .st-mfg-imgs.st-mfg-imgs-2 { max-width: 320px; grid-template-columns: 1fr 1fr; }

  /* Variants */
  .st-variants { padding: 60px 0; }
  .st-variants-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .st-variants-note { max-width: 100%; }
  .st-variant-row { grid-template-columns: 120px 1fr; grid-template-rows: auto auto; gap: 8px 0; }
  .st-variant-desc { grid-column: 1 / -1; }
  .st-variant-length {text-align: left; }

  /* Advantages */
  .st-advantages { padding: 60px 0; }
  .st-advantages-wrap { grid-template-columns: 1fr; gap: 40px; }
  .st-advantages-left { position: static; }

  /* Testing */
  .st-testing { padding: 60px 0; }
  .st-testing-header { grid-template-columns: 1fr; gap: 20px; }

  /* Components */
  .st-components { padding: 60px 0; }
  .st-components-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .st-components-note { max-width: 100%; }
  .st-components-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* CTA */
  .st-cta { padding: 60px 0; }
  .st-cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .st-cta-actions { align-items: flex-start; flex-direction: row; flex-wrap: wrap; }

  .st-testing-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .st-hero { padding: 100px 0 56px; }
  .st-hero-title { font-size: clamp(2rem, 9vw, 2.8rem); }

  .st-spec-metrics { grid-template-columns: 1fr 1fr; }

  .st-variant-row { grid-template-columns: 1fr; gap: 8px; padding: 20px 24px; }
  .st-variant-length { text-align: left; }

  .st-components-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

  .st-mfg-step { grid-template-columns: 44px 1fr; gap: 0 20px; }
}

@media (max-width: 480px) {
  .st-testing-grid { grid-template-columns: repeat(1, 1fr); }
  /* .st-test-card-img { aspect-ratio: 4 / 3; } */

  .st-spec-metrics { grid-template-columns: 1fr; }
  .st-spec-metric { border-right: none; border-bottom: 1px solid rgba(255,255,255,.07); }
  .st-spec-metric:last-child { border-bottom: none; }

  .st-components-grid { grid-template-columns: 1fr; }

  .st-cta-actions { flex-direction: column; align-items: stretch; }

  .st-mfg-imgs.st-mfg-imgs-2 { grid-template-columns: 1fr; max-width: 220px; }

  .st-csl-body { gap: 20px; }
}