.page-hero {
    padding: 160px 0 var(--space-2xl);
    background: var(--brand-navy);
    color: white;
    position: relative;
    overflow: hidden;
  }
  .page-hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse at 70% 50%, black 20%, transparent 70%);
  }
  .page-hero .container { position: relative; z-index: 1; }
  .page-hero-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-2xl);
    align-items: end;
  }
  .page-hero h1 {
    font-size: clamp(48px, 7vw, 96px);
    font-weight: 800;
    letter-spacing: -0.035em;
    color: white;
  }
  .page-hero h1 .accent { color: var(--brand-red); font-style: italic; font-weight: 600; }
  .page-hero-meta {
    color: rgba(255,255,255,0.7);
    font-size: 17px;
    line-height: 1.6;
  }
  .page-hero-path {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgba(255,255,255,0.5);
    margin-bottom: var(--space-lg);
    font-family: var(--font-display);
  }
  .page-hero-path .sep { opacity: 0.4; }
  .page-hero-path .current { color: var(--brand-red); }

  /* Filter bar */
  .filter-bar {
    background: white;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 68px;
    z-index: 20;
    backdrop-filter: blur(20px);
    background: rgba(255,255,255,0.95);
  }
  .filter-inner {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
  }
  .filter-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--ink-3);
    margin-right: var(--space-md);
    font-family: var(--font-display);
    font-weight: 600;
  }
  .filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--line);
    background: white;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-2);
    cursor: pointer;
    transition: all .2s;
    border-radius: 10px;
  }
  .filter-btn:hover { border-color: var(--brand-navy); }
  .filter-btn.active {
    background: var(--brand-navy);
    color: white;
    border-color: var(--brand-navy);
  }

  /* Product detail rows */
  .product-row {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--line);
    position: relative;
  }
  .product-row:nth-child(even) { background: var(--bg-2); }
  .product-row-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
  }
  .product-row:nth-child(even) .product-row-inner {
    direction: rtl;
  }
  .product-row:nth-child(even) .product-row-content {
    direction: ltr;
  }
  .product-row:nth-child(even) .product-row-visual {
    direction: ltr;
  }

  .product-row-visual {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
  }
  .product-row-visual .photo-placeholder {
    width: 100%; height: 100%;
  }
  .product-row-num {
    position: absolute;
    top: 16px; left: 16px;
    font-family: ui-monospace, monospace;
    font-size: 11px;
    color: rgba(255,255,255,0.9);
    letter-spacing: 0.15em;
    z-index: 3;
    background: rgba(6,26,48,0.8);
    padding: 6px 10px;
  }

  .product-row-content .eyebrow { margin-bottom: var(--space-md); }
  .product-row-content h2 {
    font-size: clamp(36px, 4.5vw, 64px);
    color: var(--brand-navy);
    margin-bottom: var(--space-md);
  }
  .product-row-content .lede {
    font-size: 18px;
    color: var(--ink-2);
    line-height: 1.55;
    margin-bottom: var(--space-lg);
    max-width: 520px;
  }

  .specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--line);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--line);
  }
  .spec-cell {
    background: white;
    padding: var(--space-md);
  }
  .spec-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-3);
    margin-bottom: 4px;
    font-family: var(--font-display);
    font-weight: 600;
  }
  .spec-value {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--brand-navy);
    letter-spacing: -0.01em;
  }
  .spec-value small { color: var(--ink-3); font-size: 12px; font-weight: 500; }

  .product-row:nth-child(even) .spec-cell { background: var(--bg-2); }
  .product-row:nth-child(even) .specs-grid { background: var(--bg-3); border-color: var(--bg-3); }

  .product-uses {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--space-lg);
  }
  .use-chip {
    padding: 6px 12px;
    background: white;
    border: 1px solid var(--line);
    font-size: 12px;
    color: var(--ink-2);
    font-family: var(--font-display);
    font-weight: 500;
  }
  .product-row:nth-child(even) .use-chip { background: white; }

  .product-row-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }

  /* Large SVG diagrams */
  .product-row-diagram {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--brand-navy-soft) 0%, var(--brand-navy-deep) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  .product-row-diagram::before {
    content: '';
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 32px 32px;
  }
  .product-row-diagram svg {
    width: 80%; height: 80%;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4));
    position: relative;
    z-index: 1;
  }
  .diagram-labels {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
  }
  .diagram-label {
    position: absolute;
    font-family: ui-monospace, monospace;
    font-size: 10px;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    white-space: nowrap;
  }
  .diagram-label::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 1px;
    background: var(--brand-red);
    margin-right: 6px;
    vertical-align: middle;
  }

  /* Product photo carousel */
  .product-row-photo {
    position: absolute;
    inset: 0;
    background: #0a1230;
    overflow: hidden;
  }
  .product-row-photo picture {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .prp-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity .5s ease;
    z-index: 1;
  }
  .prp-slide.active { opacity: 1; z-index: 2; }
  .product-row-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,22,70,0.45) 0%, rgba(15,22,70,0) 45%);
    z-index: 3;
    pointer-events: none;
  }
  .prp-nav {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    z-index: 4;
    pointer-events: none;
  }
  .prp-arrow {
    pointer-events: auto;
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(12px);
    color: white;
    font-size: 28px;
    font-family: var(--font-display);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
    border-radius: 0;
    line-height: 1;
    padding-bottom: 4px;
  }
  .prp-arrow:hover {
    background: var(--brand-red);
    transform: scale(1.05);
  }
  .prp-counter {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(15,22,70,0.65);
    backdrop-filter: blur(12px);
    color: white;
    padding: 8px 14px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    z-index: 5;
  }
  .prp-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    max-width: calc(100% - 140px);
    overflow-x: auto;
    z-index: 5;
    padding: 4px;
    scrollbar-width: none;
  }
  .prp-dots::-webkit-scrollbar { display: none; }
  .prp-dot {
    flex-shrink: 0;
    width: 28px;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border: none;
    cursor: pointer;
    transition: background .2s, width .2s;
    padding: 0;
  }
  .prp-dot:hover { background: rgba(255,255,255,0.6); }
  .prp-dot.active { background: var(--brand-red); width: 40px; }

  @media (max-width: 640px) {
    .prp-arrow { width: 40px; height: 40px; font-size: 22px; }
    .prp-counter { top: 12px; right: 12px; font-size: 11px; padding: 6px 10px; }
  }

  /* FAQ */
  .faq-section {
    padding: var(--space-3xl) 0;
    background: white;
  }
  .faq-list {
    max-width: 880px;
    margin: 0 auto;
    border-top: 1px solid var(--line);
  }
  .faq-item {
    border-bottom: 1px solid var(--line);
    transition: background .2s;
  }
  .faq-q {
    padding: var(--space-lg) 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 19px;
    color: var(--brand-navy);
    transition: color .2s;
  }
  .faq-q:hover { color: var(--brand-red); }
  .faq-toggle {
    width: 32px; height: 32px;
    border: 1px solid var(--line);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: all .25s;
    position: relative;
  }
  .faq-toggle::before, .faq-toggle::after {
    content: '';
    position: absolute;
    background: var(--brand-navy);
    transition: transform .3s;
  }
  .faq-toggle::before { width: 12px; height: 1.5px; }
  .faq-toggle::after { width: 1.5px; height: 12px; }
  .faq-item.open .faq-toggle::after { transform: scaleY(0); }
  .faq-item.open .faq-toggle {
    background: var(--brand-red);
    border-color: var(--brand-red);
  }
  .faq-item.open .faq-toggle::before { background: white; }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s cubic-bezier(.2,.7,.2,1);
  }
  .faq-item.open .faq-a { max-height: 300px; }
  .faq-a-inner {
    padding-bottom: var(--space-lg);
    color: var(--ink-3);
    font-size: 16px;
    line-height: 1.6;
    max-width: 720px;
  }

  /* CTA */
  .cta-products {
    padding: var(--space-3xl) 0;
    background: var(--bg-2);
    text-align: center;
  }
  .cta-products h2 {
    font-size: clamp(36px, 4.5vw, 64px);
    color: var(--brand-navy);
    margin-bottom: var(--space-md);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
  }
  .cta-products p {
    color: var(--ink-3);
    font-size: 18px;
    margin-bottom: var(--space-xl);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }
  .cta-products .btn-row {
    display: inline-flex;
    gap: 12px;
  }

  @media (max-width: 900px) {
    .page-hero { padding: 120px 0 var(--space-xl); }
    .page-hero-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
    .page-hero h1 { font-size: clamp(36px, 9vw, 56px); }
    .product-row { padding: var(--space-2xl) 0; }
    .product-row-inner,
    .product-row:nth-child(even) .product-row-inner { grid-template-columns: 1fr; direction: ltr; gap: var(--space-lg); }
    .product-row-visual { aspect-ratio: 4/3; }
    .product-row-content h2 { font-size: clamp(28px, 7vw, 40px); }
    .product-row-content .lede { font-size: 15px; }
    .filter-bar { top: 60px; padding: var(--space-md) 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .filter-bar .container { overflow-x: auto; }
    .filter-btns { flex-wrap: nowrap; width: max-content; }
    .filter-btn { white-space: nowrap; flex-shrink: 0; }
    .specs-grid { grid-template-columns: 1fr 1fr; }
    .spec-cell { padding: var(--space-md); }
    .spec-value { font-size: 18px; }
    .product-row-actions { flex-direction: column; align-items: stretch; }
    .product-row-actions .btn { justify-content: center; }
    .faq-q { font-size: 16px; padding: var(--space-md) 0; }
    .faq-section { padding: var(--space-2xl) 0; }
  }

  @media (max-width: 640px) {
    .page-hero h1 { font-size: clamp(32px, 10vw, 44px); }
    .specs-grid { grid-template-columns: 1fr 1fr; gap: 1px; }
    .spec-cell { padding: 14px 12px; }
    .spec-label { font-size: 10px; }
    .spec-value { font-size: 16px; }
    .product-row-num { font-size: 10px; padding: 6px 10px; }
    .prp-arrow { width: 36px; height: 36px; font-size: 20px; }
    .prp-dots { gap: 6px; }
    .prp-dot { width: 24px; }
    .prp-dot.active { width: 32px; }
    .use-chip { font-size: 11px; padding: 5px 10px; }
  }