/* V3 keeps the original hero composition as the complete first-screen page. */
      body.hero-only main > section:not(.hero),
      body.hero-only footer {
        display: none !important;
      }
      html { scrollbar-gutter: stable; }
      /* Product photography stays separate from purchasing information. */
      #products .scope-grid { grid-template-rows: auto auto; gap: 2rem 1.75rem; }
      #products .scope-card { flex-direction: column; color: var(--carbon); background: #fff; border-bottom: 1px solid var(--line); }
      #products .scope-card::after { display: none; }
      #products .scope-card img { position: static; height: 15.625rem; padding: 1rem 3rem; object-fit: contain; object-position: center; filter: none; }
      #products .scope-card:hover:where(:not(.rh-hover-reset)) img { filter: none; transform: scale(1.025); }
      #products .scope-number { top: 1rem; left: 0; background: none; color: var(--slate); padding: 0; }
      #products .scope-mark { top: 0.75rem; right: 0; width: 2rem; height: 2rem; background: none; color: var(--orange-dark); border: 0; }
      #products .scope-mark svg { width: 1.5625rem; height: 1.5625rem; }
      #products .scope-content { flex: 1; display: flex; flex-direction: column; padding: 1.5rem 0; border-top: 1px solid var(--line); }
      #products .scope-content h3 { font-size: 1.4375rem; line-height: 1.3; }
      #products .product-reference { margin-top: 0.875rem; }
      .product-reference small { display: block; color: var(--slate); font-size: 0.6875rem; margin-bottom: 0.3125rem; }
      .product-reference strong { font: 600 0.9375rem/1.5 Consolas, monospace; color: var(--orange-dark); overflow-wrap: anywhere; }
      #products .scope-content p { color: #5a6568; font-size: 0.875rem; margin-bottom: 1.25rem; }
      #products .scope-link { align-self: flex-start; margin-top: auto; color: var(--orange-dark); font-size: 0.8125rem; padding-top: 0.25rem; }
      #products .scope-link:hover:where(:not(.rh-hover-reset)) { color: var(--carbon); }
      .product-help { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-top: 2rem; }
      .product-help strong { font-size: 1.25rem; }
      .product-help p { margin: 0.5rem 0 0; color: var(--slate); font-size: 0.875rem; }
      .product-help .button { flex-shrink: 0; }
      .catalog-tabs { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 1.375rem; }
      .catalog-tabs button { min-height: 4.375rem; display: flex; align-items: center; gap: 0.625rem; padding: 0 1.125rem; border: 0; border-right: 1px solid var(--line); color: var(--slate); background: transparent; cursor: pointer; text-align: left; font-size: 0.75rem; }
      .catalog-tabs button:last-child { border-right: 0; }
      .catalog-tabs button svg { width: 1.3125rem; height: 1.3125rem; flex: 0 0 auto; color: var(--orange-dark); }
      .catalog-tabs button[aria-selected="true"] { color: var(--carbon); background: #eef1ef; box-shadow: inset 0 -0.1875rem 0 var(--orange); }
      .catalog-caption { display: flex; align-items: baseline; justify-content: space-between; gap: 1.25rem; margin: 0 0 1.0625rem; }
      .catalog-caption h3 { margin: 0; font-size: 1.375rem; }
      .catalog-caption span { color: var(--slate); font-size: 0.75rem; }
      .catalog-note { display: flex; align-items: flex-start; gap: 0.5625rem; margin: 1.375rem 0 0; color: var(--slate); font-size: 0.75rem; line-height: 1.6; }
      .catalog-note svg { width: 1rem; height: 1rem; flex: 0 0 auto; color: var(--orange-dark); margin-top: 0.125rem; }
      .empty-catalog { grid-column: 1 / -1; min-height: 11.25rem; display: grid; place-items: center; align-content: center; gap: 0.625rem; border: 1px dashed var(--line); color: var(--slate); text-align: center; }
      .empty-catalog svg { width: 1.875rem; height: 1.875rem; color: var(--orange-dark); }
      .empty-catalog strong { color: var(--carbon); }
      .empty-catalog p { margin: 0; font-size: 0.8125rem; }
      .part-search { display: grid; grid-template-columns: 1fr 1.15fr; gap: 0.625rem 2.5rem; align-items: end; margin-top: 2.125rem; padding: 1.4375rem 0 0; border-top: 1px solid #515b5e; }
      .part-search label { display: block; color: #fff; font-size: 1.1875rem; font-weight: 600; }
      .part-search p { margin: 0.5rem 0 0; color: #b7c0c1; font-size: 0.8125rem; line-height: 1.6; }
      .part-search-controls { display: flex; gap: 0.625rem; }
      .part-search input { min-width: 0; flex: 1; height: 3rem; padding: 0 0.875rem; border: 1px solid #657174; color: #fff; background: #2a3336; outline: 0; font: 0.875rem Consolas, monospace; }
      .part-search input:focus { border-color: var(--orange); }
      .part-search .button { min-width: 7.8125rem; }
      .search-status { grid-column: 2; min-height: 1.25rem; margin-top: 0; color: #ffb27f !important; }
      .process-end { display: flex; align-items: center; justify-content: space-between; gap: 1.75rem; }
      .process-end p { max-width: 32.5rem; color: #d2d8d8; font-size: 0.875rem; line-height: 1.6; }
      .faq-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 4.375rem; margin-top: 4.875rem; padding-top: 3.625rem; border-top: 1px solid var(--line); }
      .faq-layout h3 { margin: 0.875rem 0 0.875rem; font-size: 2rem; line-height: 1.2; }
      .faq-layout > div:first-child p { margin: 0; color: var(--slate); font-size: 0.875rem; line-height: 1.7; }
      .faq-list { border-top: 1px solid var(--line); }
      .faq-item { border-bottom: 1px solid var(--line); }
      .faq-item summary { display: grid; grid-template-columns: 2.375rem 1fr 1.25rem; gap: 0.75rem; align-items: center; min-height: 4rem; cursor: pointer; list-style: none; }
      .faq-item summary::-webkit-details-marker { display: none; }
      .faq-item summary > span { color: var(--orange-dark); font: 0.75rem Consolas, monospace; }
      .faq-item summary b { font-size: 0.9375rem; }
      .faq-item summary svg { width: 1.0625rem; height: 1.0625rem; color: var(--orange-dark); transition: transform .2s ease; }
      .faq-item[open] summary svg { transform: rotate(45deg); }
      .faq-item p { margin: -0.1875rem 2rem 1.125rem 3.125rem; color: var(--slate); font-size: 0.8125rem; line-height: 1.7; }
      .about-scene { min-height: 32.5rem; padding: 3.75rem 0; }
      .capabilities-section { padding: 3.75rem 0; }
      .capabilities-section .capability { min-height: 10.3125rem; padding-bottom: 1.5rem; }
      .capabilities-section .cap-icon { width: 3.375rem; height: 3.375rem; color: var(--orange-dark); }
      .capabilities-section .cap-icon svg { width: 1.875rem; height: 1.875rem; }
      .capabilities-section .capability h3 { margin-top: 1.125rem; }
      .process-action { margin-top: 1.75rem; }
      #news { padding: 3.75rem 0; }
      #news .insight-photo { height: 9.375rem; aspect-ratio: auto; background: #f6f7f6; }
      #news .insight-photo img { object-fit: contain; padding: 0.75rem; }
      #news .insight h3 { font-size: 1.375rem; }
:root { --site-header-height: 5.125rem; }
      html { scrollbar-gutter: auto; }

      .hero-rail svg,
      .hero .section-code { color: var(--orange); }
      .hero-rail a:hover:where(:not(.rh-hover-reset)) { background: rgba(240, 121, 34, .18); }

      .about-stage {
        position: relative;
        min-height: calc(100svh - var(--site-header-height));
        overflow: hidden;
        color: #fff;
        background: #172022;
      }
      .about-background,
      .about-background img { position: absolute; inset: 0; }
      .about-background { overflow: hidden; margin: 0; }
      .about-background img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center 45%;
        filter: none;
        transform: none;
        transition: opacity .35s ease, transform .7s ease;
      }
      .about-background.is-changing img { opacity: .45; transform: scale(1.07); }
      .about-shell {
        position: relative;
        z-index: 2;
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: min(var(--max), calc(100% - 7rem));
        min-height: calc(100svh - var(--site-header-height));
        margin: 0 auto;
        padding: 2rem 0 5.875rem;
      }
      .about-content { width: 100%; max-width: 65rem; margin: auto; text-align: center; text-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, .85); }
      .about-kicker {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.75rem;
        margin: 0;
        color: var(--orange);
        font-size: 0.6875rem;
        font-weight: 800;
        letter-spacing: .18em;
      }
      .about-kicker::before { width: 2.125rem; height: 2px; background: currentColor; content: ""; }
      .about-title {
        max-width: 65rem;
        margin: 0.875rem auto 0;
        color: #fff;
        font-size: clamp(2.5rem, 4vw, 3.5rem);
        font-weight: 650;
        line-height: 1.18;
      }
      .about-title span { font-weight: inherit; }
      .about-title .about-accent { color: var(--orange); font-weight: 750; }
      .about-copy {
        max-width: 60rem;
        margin: 1.375rem auto 0;
        padding: 1.0625rem 1.25rem;
        border-top: 1px solid rgba(255, 255, 255, .3);
        border-bottom: 1px solid rgba(255, 255, 255, .17);
        text-align: left;
      }
      .about-copy p {
        margin: 0;
        color: #e0e7e4;
        font-size: 1.0625rem;
        font-weight: 400;
        line-height: 1.82;
      }
      .about-copy .key { color: #fff; font-weight: 700; }
      .about-copy .warm { color: var(--orange); font-weight: 700; }
      .about-summary { display: flex; justify-content: center; margin-top: 1.0625rem; }
      .about-meta-item {
        display: flex;
        align-items: baseline;
        gap: 0.625rem;
        min-height: 2.125rem;
        padding: 0.3125rem 1.5625rem;
        border-left: 1px solid rgba(255, 255, 255, .22);
      }
      .about-meta-item:first-child { border-left: 0; }
      .about-meta-item strong { color: #fff; font: 800 1.3125rem/1 Consolas, monospace; }
      .about-meta-item small { color: #c8d0cc; font-size: 0.625rem; font-weight: 500; }
      .about-index {
        position: absolute;
        right: 0;
        bottom: 0;
        left: 0;
        display: flex;
        justify-content: center;
        gap: clamp(1.5625rem, 6vw, 5.125rem);
        border-top: 1px solid rgba(255, 255, 255, .28);
      }
      .about-index button {
        position: relative;
        display: flex;
        flex: 0 1 16.25rem;
        align-items: center;
        gap: 0.6875rem;
        min-height: 4.5rem;
        padding: 0.625rem 0 0.8125rem;
        border: 0;
        color: #aebbb7;
        background: transparent;
        text-align: left;
        cursor: pointer;
        transition: color .2s ease;
      }
      .about-index button:hover:where(:not(.rh-hover-reset)),
      .about-index button.active { color: #fff; }
      .about-index button::after {
        position: absolute;
        right: auto;
        bottom: 0;
        left: 0;
        width: 1.875rem;
        height: 2px;
        background: var(--orange);
        content: "";
        transform: scaleX(0);
        transform-origin: left;
        transition: transform .2s ease;
      }
      .about-index button.active::after { transform: scaleX(1); }
      .about-index .index-number { flex: 0 0 auto; color: var(--orange); font: 800 0.6875rem Consolas, monospace; }
      .about-index strong { display: block; color: inherit; font-size: 0.8125rem; font-weight: 650; line-height: 1.35; }
      .about-index small { display: block; margin-top: 0.1875rem; color: #b4bfbb; font-size: 0.625rem; font-weight: 400; line-height: 1.4; }
      .about-index svg { width: 1.125rem; height: 1.125rem; margin-left: auto; color: var(--orange); stroke-width: 1.5; }
      .about-caption { position: absolute; right: 0; bottom: 5.125rem; color: rgba(255, 255, 255, .58); font: 0.625rem Consolas, monospace; letter-spacing: .12em; }
@media (min-width: 821px) and (max-height: 800px) {
        .about-shell { padding-top: 1.5rem; padding-bottom: 5.125rem; }
        .about-title { margin-top: 0.625rem; font-size: clamp(2.3125rem, 3.6vw, 3.125rem); }
        .about-copy { margin-top: 0.9375rem; padding-top: 0.875rem; padding-bottom: 0.8125rem; }
        .about-copy p { font-size: 1rem; line-height: 1.72; }
        .about-summary { margin-top: 0.75rem; }
        .about-index button { min-height: 4rem; padding-top: 0.5rem; padding-bottom: 0.625rem; }
      }
@media (max-width: 820px) {
        body { min-width: 0; }
        .about-stage { min-height: max(38.75rem, calc(100svh - var(--site-header-height))); }
        .about-shell { width: calc(100% - 4rem); min-height: max(38.75rem, calc(100svh - var(--site-header-height))); padding: 2.375rem 0 13.375rem; }
        .about-title { font-size: clamp(2.375rem, 8vw, 3.625rem); }
        .about-copy { margin-top: 1.0625rem; padding: 0.9375rem 0.875rem; }
        .about-copy p { font-size: 0.9375rem; line-height: 1.8; }
        .about-summary { margin-top: 0.875rem; }
        .about-meta-item { padding: 0.3125rem 0.75rem; }
        .about-meta-item strong { font-size: 1.0625rem; }
        .about-meta-item small { font-size: 0.5625rem; }
        .about-index { display: grid; gap: 0; }
        .about-index button { width: 100%; max-width: none; min-height: 3.6875rem; padding: 0.625rem 0.8125rem; }
        .about-index button::after { left: 0.8125rem; }
        .about-caption { display: none; }
      }
@media (max-width: 560px) {
        .about-shell { width: calc(100% - 2.5rem); padding-top: 1.375rem; padding-bottom: 11.875rem; }
        .about-title { font-size: 2.1875rem; }
        .about-copy { margin-top: 0.8125rem; padding-left: 0.6875rem; padding-right: 0.6875rem; }
        .about-copy p { font-size: 0.875rem; line-height: 1.75; }
        .about-summary { margin-top: 0.625rem; }
        .about-meta-item { gap: 0.375rem; padding: 0.3125rem 0.4375rem; }
        .about-meta-item strong { font-size: 0.9375rem; }
        .about-meta-item small { font-size: 0.5625rem; }
        html[lang="en"] .about-copy p { font-size: 0.75rem; line-height: 1.5; }
      }
@media (prefers-reduced-motion: reduce) {
        .about-background img,
        .about-index button,
        .about-index button::after { transition-duration: .01ms; }
      }