/* ── Compact section spacing ── */
  .pi-section { padding: 56px 2rem; }
  .pi-section-header { margin-bottom: 2.5rem; }
  .pi-deep-dive { gap: 3rem; }
  .dent-img-frame img { max-height: 380px; }

  /* ── Hero ── */
  .dent-hero {
    position: relative; min-height: 88vh;
    display: flex; align-items: center; justify-content: flex-start;
    overflow: hidden; background: #050810;
  }
  .dent-hero__bg { position: absolute; inset: 0; z-index: 0; }
  .dent-hero__img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover; object-position: center right;
    opacity: 0.45;
  }
  .dent-hero__gradient {
    position: absolute; inset: 0;
    background: linear-gradient(105deg,
      rgba(5,8,16,0.97) 0%, rgba(5,8,16,0.88) 35%,
      rgba(5,8,16,0.55) 60%, rgba(5,8,16,0.15) 100%);
  }
  .dent-hero__content {
    position: relative; z-index: 1;
    text-align: left !important;
    padding: 7rem 4rem 10rem 6rem; max-width: 620px;
    animation: pi-fadeInUp 0.8s cubic-bezier(0.4,0,0.2,1);
  }
  .dent-hero__content .pi-hero__badge { display: inline-block; }
  .dent-hero__content .pi-hero__cta { justify-content: flex-start; }
  .dent-hero__stats {
    position: absolute; bottom: 3rem; right: 5%; z-index: 2;
    display: flex; align-items: center;
    background: rgba(10,10,20,0.72);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px; padding: 1.5rem 2rem;
  }
  .dent-hero__stat { text-align: center; padding: 0 1.5rem; }
  .dent-hero__stat-value { font-size: 2rem; font-weight: 700; color: #fff; line-height: 1; letter-spacing: -0.02em; }
  .dent-hero__stat-label { font-size: 0.75rem; color: rgba(255,255,255,0.55); margin-top: 0.4rem; }
  .dent-hero__stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.15); flex-shrink: 0; }

  /* ── Image frame ── */
  .dent-img-frame { position: relative; }
  .dent-img-frame img { width: 100%; height: auto; max-height: 480px; object-fit: contain; border-radius: 12px; display: block; }
  .dent-img-frame__caption { text-align: center; font-size: 0.78rem; color: rgba(255,255,255,0.35); margin-top: 0.5rem; }

  /* ── Market position pillars ── */
  .dent-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
  .dent-pillar { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 14px; overflow: hidden; }
  .dent-pillar__img { height: 180px; overflow: hidden; }
  .dent-pillar__img img { width: 100%; height: 100%; object-fit: cover; }
  .dent-pillar h3 { font-size: 0.95rem; font-weight: 600; color: rgba(255,255,255,0.9); margin: 0 0 0.5rem; padding: 1.25rem 1.25rem 0; }
  .dent-pillar p { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.6; margin: 0; padding: 0 1.25rem 1.25rem; }

  /* ── OEM refs ── */
  .dent-refs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2.5rem; }
  .dent-ref-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; padding: 1.5rem 1.25rem; }
  .dent-ref-logo { height: 32px; width: auto; margin-bottom: 0.75rem; filter: brightness(0) invert(1) opacity(0.7); display: block; }
  .dent-ref-card p { font-size: 0.8rem; color: rgba(255,255,255,0.5); line-height: 1.6; margin: 0; }

  /* ── Award ── */
  .dent-award { display: grid; grid-template-columns: 1fr 200px; gap: 2rem; align-items: center; background: rgba(175,0,54,0.05); border: 1px solid rgba(175,0,54,0.15); border-radius: 14px; padding: 2rem; }
  .dent-award h3 { font-size: 1rem; font-weight: 600; color: rgba(255,255,255,0.9); margin: 0 0 0.75rem; }
  .dent-award p { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.65; margin: 0 0 0.5rem; }
  .dent-award__img img { width: 100%; border-radius: 8px; }

  /* ── Market demand ── */
  .dent-demand-list { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
  .dent-demand-item { display: flex; gap: 1.25rem; align-items: flex-start; padding: 1rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; }
  .dent-demand-num { font-size: 1.5rem; font-weight: 700; color: #af0036; line-height: 1; flex-shrink: 0; width: 36px; }
  .dent-demand-item strong { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.85); margin-bottom: 0.3rem; }
  .dent-demand-item p { font-size: 0.8rem; color: rgba(255,255,255,0.45); line-height: 1.6; margin: 0; }

  /* ── Pyramid layout ── */
  .dent-pyramid-layout { display: grid; grid-template-columns: 280px 1fr; gap: 3rem; align-items: start; margin-top: 2.5rem; }
  .dent-pyramid-img { position: sticky; top: 5rem; }

  /* CSS Pyramid */
  .dent-css-pyramid { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 1.5rem 0; }
  .dent-pyr-tier {
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; font-weight: 600; letter-spacing: 0.02em;
    color: rgba(255,255,255,0.9);
    clip-path: polygon(12% 0%, 88% 0%, 100% 100%, 0% 100%);
    transition: opacity 0.2s;
  }
  .dent-pyr-t1 { width: 55%;  height: 64px; background: #2B739B; font-size: 0.95rem; }
  .dent-pyr-t2 { width: 78%;  height: 64px; background: #7FADD4; color: rgba(0,0,20,0.8); }
  .dent-pyr-t3 { width: 100%; height: 64px; background: #C9D6DD; color: rgba(0,0,20,0.7); font-size: 0.85rem; }
  .dent-pyramid-caption { text-align: center; font-size: 0.75rem; color: rgba(255,255,255,0.3); margin-top: 0.75rem; }
  .dent-pyramid-tiers { display: flex; flex-direction: column; gap: 1.25rem; }
  .dent-tier { display: flex; gap: 1.25rem; padding: 1.5rem; border-radius: 12px; border: 1px solid rgba(255,255,255,0.08); background: rgba(255,255,255,0.03); }
  .dent-tier--custom { border-color: rgba(81,174,226,0.35); background: rgba(81,174,226,0.06); }
  .dent-tier--optimyn { border-color: rgba(135,158,171,0.35); background: rgba(135,158,171,0.06); }
  .dent-tier--elemental { border-color: rgba(100,100,100,0.3); background: rgba(255,255,255,0.025); }
  .dent-tier__badge { font-size: 1.8rem; font-weight: 800; color: rgba(175,0,54,0.35); line-height: 1; flex-shrink: 0; width: 2.5rem; }
  .dent-tier--custom .dent-tier__badge { color: rgba(81,174,226,0.6); }
  .dent-tier--optimyn .dent-tier__badge { color: rgba(135,158,171,0.7); }
  .dent-tier__body h3 { font-size: 1rem; font-weight: 600; color: rgba(255,255,255,0.9); margin: 0 0 0.4rem; }
  .dent-tier--custom .dent-tier__body h3 { color: #51AEE2; }
  .dent-tier__body p { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.65; margin: 0 0 0.6rem; }
  .dent-tier__body ul { margin: 0; padding-left: 1rem; display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
  .dent-tier__body ul li { font-size: 0.78rem; color: rgba(255,255,255,0.4); list-style: disc; }

  /* ── Product line header ── */
  .dent-line-header { display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 2rem; }
  .dent-line-num { font-size: 4rem; font-weight: 800; color: rgba(175,0,54,0.2); line-height: 1; flex-shrink: 0; letter-spacing: -0.04em; }

  /* ── Customer-specific gallery ── */
  .dent-custom-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .dent-custom-item { background: #0c0e14; border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
  .dent-custom-img { background: rgba(255,255,255,0.03); display: flex; align-items: center; justify-content: center; min-height: 160px; padding: 1rem; }
  .dent-custom-img img { max-width: 100%; max-height: 150px; object-fit: contain; display: block; }
  .dent-custom-item span { display: block; font-size: 0.75rem; color: rgba(255,255,255,0.5); padding: 0.6rem 0.75rem; border-top: 1px solid rgba(255,255,255,0.05); }

  /* ── optimyn top layout ── */
  .dent-optimyn-top { display: flex; gap: 2rem; align-items: flex-start; margin-bottom: 1.25rem; }
  .dent-optimyn-top__text { flex: 1; color: rgba(255,255,255,0.6); font-size: 0.95rem; line-height: 1.75; margin: 0; }
  .dent-optimyn-top__img { flex: 0 0 180px; }
  .dent-optimyn-top__img img { width: 100%; height: 180px; object-fit: contain; display: block; }

  /* ── optimyn rast panorama ── */
  .dent-rast-wrap { border-radius: 10px; overflow: hidden; background: #0a0a12; height: 160px; }
  .dent-rast-img { width: 100%; height: 100%; object-fit: cover; object-position: center 85%; display: block; }

  /* ── optimyn naming diagram ── */
  .dent-optimyn-diagram { margin-top: 1.25rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 1.75rem; }
  .dent-desig-grid { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; row-gap: 1rem; }
  .dent-desig-col { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; flex: 1; min-width: 80px; }
  .dent-desig-label { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: rgba(255,255,255,0.4); text-align: center; white-space: nowrap; }
  .dent-desig-box { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 8px; padding: 0.6rem 0.8rem; display: flex; flex-direction: column; align-items: center; gap: 0.2rem; width: 100%; box-sizing: border-box; }
  .dent-desig-box--highlight { background: rgba(81,174,226,0.12); border-color: rgba(81,174,226,0.35); }
  .dent-desig-box span { font-size: 0.95rem; font-weight: 700; color: rgba(255,255,255,0.92); font-family: monospace; }
  .dent-desig-box em { font-style: normal; font-size: 0.68rem; color: rgba(255,255,255,0.4); text-align: center; }
  .dent-desig-arrow { display: flex; align-items: center; justify-content: center; padding: 0 0.25rem; font-size: 1.1rem; color: rgba(255,255,255,0.25); flex: 0 0 auto; align-self: center; margin-top: 1.4rem; }
  .dent-desig-example { margin: 1.25rem 0 0; font-size: 0.82rem; color: rgba(255,255,255,0.5); border-top: 1px solid rgba(255,255,255,0.07); padding-top: 1rem; }
  .dent-desig-example strong { color: rgba(255,255,255,0.85); font-family: monospace; }

  /* ── Cage materials ── */
  .dent-mat-section { margin-bottom: 1.5rem; }
  .dent-mat-section h3 { font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,0.8); margin: 0 0 0.5rem; }
  .dent-mat-section p { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.6; margin: 0; }
  .dent-cage-list { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 0.5rem; }
  .dent-cage-item { display: flex; gap: 0.75rem; align-items: flex-start; font-size: 0.8rem; color: rgba(255,255,255,0.45); line-height: 1.5; padding: 0.5rem 0.75rem; background: rgba(255,255,255,0.02); border-radius: 6px; border-left: 2px solid rgba(255,255,255,0.1); }
  .dent-cage-item--premium { border-left-color: rgba(175,0,54,0.4); }
  .dent-cage-tag { flex-shrink: 0; font-size: 0.72rem; font-weight: 600; color: rgba(255,255,255,0.65); background: rgba(255,255,255,0.06); padding: 0.2rem 0.55rem; border-radius: 4px; white-space: nowrap; }

  /* ── Turbine images ── */
  .dent-turbine-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
  .dent-turbine-imgs img { width: 100%; height: 200px; object-fit: cover; border-radius: 10px; }

  /* ── Accessory images ── */
  .dent-acc-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
  .dent-acc-imgs img { width: 100%; height: 200px; object-fit: cover; border-radius: 10px; }

  /* ── Service grid ── */
  .dent-service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 2rem; }
  .dent-service-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; padding: 1.5rem; border-left: 3px solid rgba(175,0,54,0.3); }
  .dent-service-card strong { display: block; font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,0.8); margin-bottom: 0.5rem; }
  .dent-service-card p { font-size: 0.8rem; color: rgba(255,255,255,0.45); line-height: 1.6; margin: 0; }

  /* ── Lab gallery ── */
  .dent-lab-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
  .dent-lab-item { background: #0c0e14; border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; overflow: hidden; }
  .dent-lab-item img { width: 100%; height: 140px; object-fit: cover; display: block; }
  .dent-lab-item span { display: block; font-size: 0.72rem; color: rgba(255,255,255,0.4); padding: 0.5rem 0.65rem; }

  /* ── Corrosion legend ── */
  .dent-corr-legend { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.75rem; }
  .dent-corr-legend > div { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: rgba(255,255,255,0.5); }
  .dent-corr-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
  .dent-corr-dot--1 { background: #888; }
  .dent-corr-dot--2 { background: #aaa; }
  .dent-corr-dot--3 { background: #af0036; }

  /* ── PDF downloads ── */
  .dent-pdf-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; max-width: 640px; margin: 0 auto; }
  .dent-pdf-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; }
  .dent-pdf-card__cover { height: 200px; overflow: hidden; background: #0c0e14; display: flex; align-items: center; justify-content: center; }
  .dent-pdf-card__cover img { height: 100%; width: auto; object-fit: contain; }
  .dent-pdf-card__body { padding: 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
  .dent-pdf-card__label { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.3); }
  .dent-pdf-card__title { font-size: 0.95rem; font-weight: 600; color: rgba(255,255,255,0.85); line-height: 1.3; }
  .dent-pdf-card__meta { font-size: 0.72rem; color: rgba(255,255,255,0.25); }
  .dent-pdf-card__btn { display: flex; align-items: center; justify-content: center; gap: 0.5rem; background: #af0036; color: #fff; font-size: 0.82rem; font-weight: 600; padding: 0.65rem 1.25rem; border-radius: 8px; text-decoration: none; transition: background 0.2s; margin-top: auto; }
  .dent-pdf-card__btn:hover { background: #c9003f; }

  /* ── Responsive ── */
  @media (max-width: 1024px) {
    .dent-refs { grid-template-columns: repeat(2, 1fr); }
    .dent-lab-gallery { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 900px) {
    .dent-hero__content { padding: 5rem 2rem 8rem; }
    .dent-hero__stats { position: static; margin: 1rem 2rem; border-radius: 12px; }
    .dent-pillars { grid-template-columns: 1fr; }
    .dent-pyramid-layout { grid-template-columns: 1fr; }
    .dent-pyramid-img { position: static; max-width: 280px; margin: 0 auto; }
    .dent-custom-gallery { grid-template-columns: repeat(2, 1fr); }
    .dent-service-grid { grid-template-columns: 1fr; }
    .dent-turbine-imgs, .dent-acc-imgs { grid-template-columns: 1fr; }
    .dent-award { grid-template-columns: 1fr; }
    .dent-pdf-grid { grid-template-columns: 1fr; }
  }
  @media (max-width: 600px) {
    .dent-refs { grid-template-columns: 1fr 1fr; }
    .dent-custom-gallery { grid-template-columns: 1fr; }
    .dent-lab-gallery { grid-template-columns: repeat(2, 1fr); }
  }