/* ===== Hero ===== */
  .xray-hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    overflow: hidden;
    background: #050810;
  }

  .xray-hero__bg { position: absolute; inset: 0; z-index: 0; }

  .xray-hero__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
    opacity: 0.5;
  }

  .xray-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%
    );
  }

  .xray-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);
  }

  .xray-hero__content .pi-hero__badge { display: inline-block; }
  .xray-hero__content .pi-hero__cta { justify-content: flex-start; }

  .xray-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;
  }

  .xray-hero__stat { text-align: center; padding: 0 1.5rem; }

  .xray-hero__stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    letter-spacing: -0.02em;
  }

  .xray-hero__stat-value sup { font-size: 1rem; vertical-align: super; }

  .xray-hero__stat-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 0.4rem;
    letter-spacing: 0.03em;
  }

  .xray-hero__stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
  }

  /* ===== 客戶 logos ===== */
  .xray-clients { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid rgba(255, 255, 255, 0.1); }
  .xray-clients__label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255, 255, 255, 0.4); margin-bottom: 0.75rem; }
  .xray-clients__logos { display: flex; gap: 0.75rem; flex-wrap: wrap; }
  .xray-clients__logos span { font-size: 0.85rem; font-weight: 600; color: rgba(255, 255, 255, 0.65); background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); padding: 0.3rem 0.75rem; border-radius: 6px; }

  /* ===== CAD 圖框 ===== */
  .xray-cad-box { position: relative; }
  .xray-cad-box__img {
    width: 100%;
    height: 320px;
    object-fit: contain;
    display: block;
    mask-image: radial-gradient(ellipse 80% 78% at 60% 50%, black 45%, rgba(0,0,0,0.5) 65%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse 80% 78% at 60% 50%, black 45%, rgba(0,0,0,0.5) 65%, transparent 85%);
  }
  .xray-cad-box__caption { text-align: center; font-size: 0.78rem; color: rgba(255, 255, 255, 0.35); margin-top: 0.5rem; letter-spacing: 0.04em; }

  /* ===== Feature grid ===== */
  .xray-feat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    overflow: hidden;
  }
  .xray-feat-card {
    background: rgba(255,255,255,0.03);
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: background 0.2s;
  }
  .xray-feat-card:hover { background: rgba(255,255,255,0.055); }
  .xray-feat-card__kpi {
    font-size: 1.9rem;
    font-weight: 700;
    color: #af0036;
    line-height: 1;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
  }
  .xray-feat-card__kpi--sm { font-size: 1.45rem; }
  .xray-feat-card__unit {
    font-size: 0.75rem;
    font-weight: 500;
    color: rgba(175,0,54,0.6);
    letter-spacing: 0.04em;
    margin-left: 0.2rem;
    vertical-align: middle;
  }
  .xray-feat-card__content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    margin: 0 0 0.4rem;
  }
  .xray-feat-card__content p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.45);
    line-height: 1.65;
    margin: 0;
  }
  @media (max-width: 900px) { .xray-feat-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .xray-feat-grid { grid-template-columns: 1fr; } }

  /* ===== 應用系列卡片 ===== */
  .xray-series-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
  }

  @media (max-width: 900px) { .xray-series-grid { grid-template-columns: 1fr; } }

  .xray-series-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.3s, transform 0.3s;
  }

  .xray-series-card:hover { border-color: rgba(175, 0, 54, 0.3); transform: translateY(-3px); }
  .xray-series-card--highlight { border-color: rgba(175, 0, 54, 0.3); background: rgba(175, 0, 54, 0.05); }

  /* 卡片頭部：固定高度 200px，深色背景融合 AI 去背軸承圖 */
  .xray-series-card__head {
    position: relative;
    background: #0c0e14;
    height: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .xray-series-card--highlight .xray-series-card__head { background: #0e0c14; }

  .xray-series-card__num {
    font-size: 6rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.04);
    line-height: 1;
    position: absolute;
    bottom: 0.25rem;
    right: 0.75rem;
    letter-spacing: -0.06em;
    font-family: monospace;
    user-select: none;
  }

  .xray-series-card--highlight .xray-series-card__num { color: rgba(175, 0, 54, 0.1); }

  .xray-series-card__badge-tag {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 3;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #af0036;
    background: rgba(175, 0, 54, 0.1);
    border: 1px solid rgba(175, 0, 54, 0.25);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
  }

  /* AI 去背圖：直接融入深色背景，無需 blend mode */
  .xray-series-card__photos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    position: relative;
    width: 100%;
    padding: 1.25rem 1.5rem;
    align-items: center;
  }

  .xray-series-card__photos--single {
    grid-template-columns: 1fr;
    padding: 1.25rem 3rem;
  }

  .xray-series-card__photos img {
    width: 100%;
    height: 120px;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 4px 16px rgba(0,0,0,0.6));
  }

  .xray-series-card__photos--single img { height: 140px; }

  /* 頭部到主體的漸層過渡 */
  .xray-series-card__head-fade {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(to bottom, transparent, #111520);
    z-index: 2;
  }

  /* 卡片主體 */
  .xray-series-card__body {
    padding: 1rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #111520;
  }

  .xray-series-card--highlight .xray-series-card__body { background: #130f1e; }

  .xray-series-card__body h3 { font-size: 1.1rem; font-weight: 700; color: #fff; margin: 0 0 0.5rem 0; }
  .xray-series-card__body p { font-size: 0.875rem; color: rgba(255, 255, 255, 0.55); line-height: 1.6; margin: 0 0 1rem 0; flex: 1; }

  /* 規格表 */
  .xray-series-card__specs { display: flex; flex-direction: column; border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 10px; overflow: hidden; margin-top: auto; }

  .xray-spec-row { display: flex; justify-content: space-between; align-items: center; padding: 0.55rem 0.85rem; border-bottom: 1px solid rgba(255, 255, 255, 0.06); gap: 0.75rem; }
  .xray-spec-row:last-child { border-bottom: none; }
  .xray-spec-row:nth-child(odd) { background: rgba(255, 255, 255, 0.02); }
  .xray-spec-row--critical { background: rgba(175, 0, 54, 0.07) !important; }
  .xray-spec-row__label { font-size: 0.78rem; color: rgba(255, 255, 255, 0.4); font-weight: 500; letter-spacing: 0.02em; white-space: nowrap; }
  .xray-spec-row__value { font-size: 0.88rem; font-weight: 600; color: rgba(255, 255, 255, 0.85); text-align: right; }
  .xray-spec-row__value--accent { color: #e8a0b0; }
  .xray-spec-row--critical .xray-spec-row__value { color: #ff8fa3; }

  /* 共通規格橫條 */
  .xray-common-specs { border: 1px solid rgba(255, 255, 255, 0.09); border-radius: 14px; overflow: hidden; margin-top: 2rem; display: flex; align-items: stretch; }
  .xray-common-specs__label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255, 255, 255, 0.35); background: rgba(255, 255, 255, 0.04); padding: 1rem 1.25rem; display: flex; align-items: center; border-right: 1px solid rgba(255, 255, 255, 0.08); white-space: nowrap; min-width: 100px; }
  .xray-common-specs__items { display: flex; flex-wrap: wrap; flex: 1; }
  .xray-common-spec { padding: 0.85rem 1.5rem; border-right: 1px solid rgba(255, 255, 255, 0.06); flex: 1; min-width: 120px; }
  .xray-common-spec:last-child { border-right: none; }
  .xray-common-spec__key { font-size: 0.72rem; color: rgba(255, 255, 255, 0.35); font-weight: 500; letter-spacing: 0.03em; margin-bottom: 0.3rem; text-transform: uppercase; }
  .xray-common-spec__val { font-size: 0.95rem; font-weight: 700; color: rgba(255, 255, 255, 0.85); letter-spacing: -0.01em; }

  /* ===== 生產設施圖片集 ===== */
  .xray-gallery {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 1rem;
  }

  .xray-gallery__item {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    background: #0d1018;
  }

  .xray-gallery__item--large {
    grid-row: span 2;
  }

  .xray-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
    min-height: 180px;
  }

  .xray-gallery__item--large img { min-height: 100%; }

  .xray-gallery__item:hover img { transform: scale(1.03); }

  .xray-gallery__caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.6rem 0.9rem;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.8);
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
    font-weight: 500;
    letter-spacing: 0.02em;
  }

  @media (max-width: 768px) {
    .xray-gallery { grid-template-columns: 1fr 1fr; }
    .xray-gallery__item--large { grid-row: span 1; grid-column: span 2; }
  }

  /* ===== App card SVG icon ===== */
  .xray-app-svg { width: 2rem; height: 2rem; color: #af0036; margin-bottom: 0.75rem; }
  .xray-app-svg svg { width: 100%; height: 100%; display: block; }

  /* ===== RWD ===== */
  /* 應用場景橫幅：四邊 mask 消融，直接融入背景，無邊界感 */
  .xray-scene-banner {
    position: relative;
    overflow: visible;
    background: transparent;
    margin-top: -4rem;
    margin-bottom: -4rem;
    z-index: 2;
  }
  .xray-scene-banner__track {
    display: flex;
    height: 280px;
    /* 四邊消融：左右水平淡出，上下垂直淡出，兩個 mask 取交集 */
    mask-image:
      linear-gradient(to right,  transparent 0%, black 12%, black 88%, transparent 100%),
      linear-gradient(to bottom, transparent 0%, black 35%, black 65%, transparent 100%);
    mask-composite: intersect;
    -webkit-mask-image:
      linear-gradient(to right,  transparent 0%, black 12%, black 88%, transparent 100%),
      linear-gradient(to bottom, transparent 0%, black 35%, black 65%, transparent 100%);
    -webkit-mask-composite: source-in;
  }
  .xray-scene-banner__item {
    flex: 1;
    position: relative;
    overflow: hidden;
  }
  .xray-scene-banner__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.6s ease;
  }
  .xray-scene-banner__item:hover img {
    transform: scale(1.05);
  }
  .xray-scene-banner__item span {
    position: absolute;
    bottom: 20%;
    left: 0;
    right: 0;
    color: rgba(255,255,255,0.55);
    font-size: 0.72rem;
    letter-spacing: 0.07em;
    text-align: center;
    text-transform: uppercase;
  }
  .xray-scene-banner__divider {
    display: none;
  }

  /* 工程技術服務：左右兩欄 */
  .xray-eng-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 4rem;
    align-items: start;
  }
  .xray-eng-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }
  .xray-eng-list li {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
  }
  .xray-eng-check {
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
    background: rgba(175, 0, 54, 0.15);
    border: 1px solid rgba(175, 0, 54, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: #af0036;
    margin-top: 0.15rem;
  }
  .xray-eng-list li strong {
    display: block;
    color: rgba(255,255,255,0.9);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
  }
  .xray-eng-list li p {
    margin: 0;
    color: rgba(255,255,255,0.45);
    font-size: 0.85rem;
    line-height: 1.6;
  }

  /* PDF 下載卡片 */
  .xray-pdf-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: sticky;
    top: 2rem;
  }
  .xray-pdf-card__icon {
    width: 48px;
    height: 48px;
    color: rgba(255,255,255,0.4);
  }
  .xray-pdf-card__icon svg { width: 100%; height: 100%; }
  .xray-pdf-card__label {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.35);
    margin-bottom: 0.25rem;
  }
  .xray-pdf-card__title {
    font-size: 1.05rem;
    font-weight: 600;
    color: rgba(255,255,255,0.88);
    line-height: 1.4;
  }
  .xray-pdf-card__meta {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.3);
  }
  .xray-pdf-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #af0036;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.65rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
    width: fit-content;
  }
  .xray-pdf-card__btn:hover { background: #c8003f; }

  @media (max-width: 768px) {
    .xray-hero__content { padding: 5rem 1.5rem 8rem 1.5rem; }
    .xray-hero__stats { position: relative; bottom: auto; right: auto; margin: 0 1.5rem 2rem; justify-content: space-around; }
    .xray-hero__stat { padding: 0 1rem; }
    .xray-common-specs { flex-direction: column; }
    .xray-common-specs__label { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.08); min-width: unset; }
    .xray-scene-banner__track { height: 140px; }
    .xray-scene-banner__item span { font-size: 0.68rem; }
    .xray-eng-layout { grid-template-columns: 1fr; gap: 2rem; }
    .xray-pdf-card { position: static; }
  }