/* FuRui visual refinement v10.
   Preserve the existing information architecture and graphite/orange identity.
   This final layer standardizes material, typography, product stages and responsive density. */

:root,
:root:not([data-theme="light"]) {
  --fr-bg-0: #121719;
  --fr-bg-1: #171d20;
  --fr-bg-2: #1d2529;
  --fr-bg-3: #242e33;
  --fr-line-soft: #303b40;
  --fr-line: #3c494f;
  --fr-text: #f1f4f4;
  --fr-text-soft: #c2ccd0;
  --fr-text-muted: #9facb1;
  --fr-orange: #f07638;
  --fr-orange-hover: #ff8950;
  --fr-silver-0: #f2f4f4;
  --fr-silver-1: #e7ebec;
  --fr-focus: #ff9867;
  --fr-card-radius: 9px;
  --fr-control-radius: 7px;
  --fr-section-space: clamp(54px, 5.4vw, 78px);
  --fr-fast: 160ms;
  --fr-shadow-soft: 0 20px 52px rgb(0 0 0 / 0.16);
  --fr-shadow-lift: 0 24px 64px rgb(0 0 0 / 0.24);
  color-scheme: dark;
}

html { background: var(--fr-bg-0); }

body {
  background: var(--fr-bg-0);
  color: var(--fr-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: normal;
}

::selection {
  background: rgb(240 118 56 / 0.3);
  color: #fff;
}

:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--fr-focus);
  outline-offset: 3px;
}

/* Header and navigation hierarchy. */
.site-header {
  z-index: 100;
  background: rgb(18 23 25 / 0.97);
  border-bottom-color: rgb(98 114 121 / 0.28);
}

.site-header.is-scrolled {
  background: rgb(18 23 25 / 0.94);
  border-bottom-color: rgb(108 126 134 / 0.42);
  box-shadow: 0 12px 35px rgb(0 0 0 / 0.2);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
}

.fr-contact-strip {
  background: #222d31;
  border-bottom-color: #354248;
}

.site-header .site-nav > a,
.site-header .nav-product-link {
  color: #aeb9bd;
  font-weight: 500;
  letter-spacing: -.01em;
  transition: color var(--fr-fast) ease;
}

.site-header .site-nav > a:hover,
.site-header .nav-product-link:hover,
.site-header .site-nav > a[aria-current="page"],
.site-header .nav-product-link[aria-current="page"] {
  color: var(--fr-text);
}

.site-header .nav-actions .button,
.button.button-accent {
  background: var(--fr-orange);
  border-color: var(--fr-orange);
  color: #17100c;
  box-shadow: inset 0 1px rgb(255 255 255 / 0.16);
  font-weight: 600;
  transition: background var(--fr-fast) ease, border-color var(--fr-fast) ease, transform var(--fr-fast) ease;
}

.site-header .nav-actions .button:hover,
.button.button-accent:hover {
  background: var(--fr-orange-hover);
  border-color: var(--fr-orange-hover);
  transform: translateY(-1px);
}

.product-mega-menu {
  z-index: 130;
  border-color: #435159;
  background: rgb(23 29 32 / 0.99);
  box-shadow: 0 26px 74px rgb(0 0 0 / 0.42);
}

.product-mega-links > a {
  border-radius: 6px;
  transition: background var(--fr-fast) ease, color var(--fr-fast) ease;
}

.product-mega-links > a:hover { background: #232d31; }
.product-mega-links small { color: var(--fr-text-muted); }

/* Shared section rhythm and readable color contrast. */
.fr-home .fr-home-section,
.fr-detail-section,
.fr-support-v6 .fr-support-section {
  padding-block: var(--fr-section-space);
}

.fr-section-heading h2,
.fr-home .fr-home-section-heading h2,
.fr-support-v6 .fr-support-section-heading h2 {
  color: var(--fr-text);
  font-weight: 500;
}

.fr-section-heading > p,
.fr-home .fr-home-section-heading > p,
.fr-support-v6 .fr-support-section-heading > p {
  color: var(--fr-text-soft);
}

.eyebrow,
.fr-support-eyebrow,
.product-model,
.category-card-copy > span,
.catalog-product-copy > p {
  color: var(--fr-orange);
  font-weight: 600;
}

/* Homepage hero and product directory. */
.fr-home .fr-home-carousel::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  height: 120px;
  pointer-events: none;
  background: linear-gradient(0deg, var(--fr-bg-0), transparent);
}

.fr-home .fr-home-carousel .hero-copy {
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 20px rgb(0 0 0 / 0.28);
}

.fr-banner-controls {
  border-color: rgb(228 237 240 / 0.25);
  background: rgb(15 20 22 / 0.72);
  box-shadow: 0 12px 35px rgb(0 0 0 / 0.2), inset 0 1px rgb(255 255 255 / 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.fr-home .fr-home-products { background: var(--fr-bg-0); }

.fr-home .fr-home-family {
  border-color: var(--fr-line-soft);
  background: var(--fr-bg-1);
  box-shadow: inset 0 1px rgb(255 255 255 / 0.015);
  transition: border-color var(--fr-fast) ease, transform var(--fr-fast) ease, box-shadow var(--fr-fast) ease;
}

.fr-home .fr-home-family:hover {
  border-color: #4b5a61;
  box-shadow: var(--fr-shadow-soft), inset 0 1px rgb(255 255 255 / 0.025);
  transform: translateY(-2px);
}

.fr-home .fr-home-family-image,
.category-card-image,
.catalog-product-image,
.fr-product-stage,
.product-thumbs button,
.fr-packing-gallery figure,
.fr-application-photo {
  background:
    linear-gradient(145deg, rgb(255 255 255 / 0.72), transparent 36%),
    linear-gradient(135deg, var(--fr-silver-0), var(--fr-silver-1));
}

.fr-home .fr-home-family-image,
.category-card-image,
.catalog-product-image,
.fr-product-stage {
  position: relative;
  overflow: hidden;
}

.fr-home .fr-home-family-image::after,
.category-card-image::after,
.catalog-product-image::after,
.fr-product-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgb(20 29 33 / 0.07);
  border-radius: inherit;
  box-shadow: inset 0 -16px 30px rgb(39 54 61 / 0.035);
}

.fr-home .fr-home-family-copy h3,
.fr-home .fr-home-news-copy h3 { color: var(--fr-text); }

.fr-home .fr-home-about {
  background: #192024;
  border-block-color: var(--fr-line-soft);
}

.fr-home .fr-home-about-grid { align-items: center; }
.fr-home .fr-home-selection { border-left-color: #455158; }

.fr-home .fr-home-review-list article > i {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid #48565c;
  border-radius: 50%;
  color: #d7e0e3;
}

.fr-home .fr-home-news-photo,
.news-card > a > div {
  background: #242e33;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.035);
}

.fr-home .fr-home-news-photo img,
.news-card img {
  filter: saturate(.82) contrast(1.04);
}

.fr-home .fr-news-with-photos article > a {
  transition: background var(--fr-fast) ease;
}

.fr-home .fr-news-with-photos article > a:hover {
  background: linear-gradient(90deg, rgb(255 255 255 / 0.025), transparent 72%);
}

/* Product center and category cards. */
.catalog-page .category-card {
  border-color: #39464c;
  background: rgb(23 30 33 / 0.95);
  border-radius: var(--fr-card-radius);
  box-shadow: inset 0 1px rgb(255 255 255 / 0.018);
  transition: border-color var(--fr-fast) ease, transform var(--fr-fast) ease, box-shadow var(--fr-fast) ease;
}

.catalog-page .category-card:hover {
  border-color: #58676e;
  box-shadow: var(--fr-shadow-lift);
  transform: translateY(-3px);
}

.catalog-page .category-card-image { background-color: var(--fr-silver-1); }

.catalog-page .category-card-image img {
  object-fit: contain;
  padding: 20px;
  filter: saturate(.9) contrast(1.02);
}

.catalog-page .category-card-copy { background: linear-gradient(155deg, #1b2327, #171d20); }
.catalog-page .category-card-copy h2 { color: var(--fr-text); font-weight: 500; letter-spacing: -.03em; }
.catalog-page .category-card-copy ul { color: var(--fr-text-soft); }

.category-page .catalog-product-card,
.related-product-grid .catalog-product-card {
  border-color: var(--fr-line-soft);
  background: var(--fr-bg-1);
  box-shadow: inset 0 1px rgb(255 255 255 / 0.018);
  transition: border-color var(--fr-fast) ease, transform var(--fr-fast) ease, box-shadow var(--fr-fast) ease;
}

.category-page .catalog-product-card:hover,
.related-product-grid .catalog-product-card:hover {
  border-color: #536168;
  box-shadow: var(--fr-shadow-soft);
  transform: translateY(-2px);
}

.category-page .catalog-product-image,
.related-product-grid .catalog-product-image {
  background-color: var(--fr-silver-1);
}

.category-page .catalog-product-image img,
.related-product-grid .catalog-product-image img {
  filter: saturate(.88) contrast(1.03);
  transform: scale(.96);
  transition: transform 220ms ease;
}

.category-page .catalog-product-card:hover img,
.related-product-grid .catalog-product-card:hover img { transform: scale(1); }

.fr-series-search,
.fr-search-field,
.quote-form :is(input, select, textarea),
.fr-footer-form .field :is(input, select, textarea) {
  border-color: #53636a;
  background: #141c1f;
  color: var(--fr-text);
}

.fr-series-search:focus-within,
.fr-search-field:focus-within,
.quote-form .field:focus-within :is(input, select, textarea) {
  border-color: var(--fr-focus);
  box-shadow: 0 0 0 3px rgb(240 118 56 / 0.13);
  outline: 0;
}

/* Product detail: smaller gallery, tighter rhythm and clearer data surfaces. */
.product-detail-page .product-detail-hero {
  grid-template-columns: minmax(0, .82fr) minmax(440px, 1.18fr);
  gap: clamp(44px, 6vw, 82px);
  align-items: center;
}

.product-detail-page .product-detail-gallery { max-width: 520px; }

.product-detail-page .fr-product-stage {
  border: 1px solid #d3d9db;
  border-radius: var(--fr-card-radius);
  box-shadow: 0 24px 70px rgb(0 0 0 / 0.2);
}

.product-detail-page .fr-product-stage img {
  object-fit: contain;
  padding: clamp(16px, 2.3vw, 28px);
  filter: saturate(.9) contrast(1.025);
}

.product-detail-page .product-thumbs button {
  border-color: #566269;
  border-radius: 6px;
}

.product-detail-page .product-thumbs button.is-active { border-color: var(--fr-orange); }

.product-detail-page .product-detail-copy h1 {
  font-weight: 500;
  letter-spacing: -.045em;
  color: var(--fr-text);
}

.product-contact-grid > a,
.fr-order-panel,
.fr-shipping-note,
.contact-page .quote-form {
  border-color: #3f4d54;
  background: linear-gradient(145deg, #1c2529, #192125);
  box-shadow: inset 0 1px rgb(255 255 255 / 0.022);
}

.fr-detail-nav-wrap {
  z-index: 60;
  border-color: #374349;
  background: rgb(18 23 25 / 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.fr-detail-nav a { color: #aeb9bd; font-weight: 500; }
.fr-detail-nav a[aria-current="location"] { color: var(--fr-text); }

.fr-detail-section { border-color: var(--fr-line-soft); }

.product-detail-page .fr-detail-section { padding-block: 56px; }

.fr-specifications { background: #101517; }

.fr-spec-summary > div {
  border-top-color: #445159;
  background: linear-gradient(180deg, rgb(255 255 255 / 0.018), transparent);
}

.model-table-wrap {
  border-color: #46545b;
  border-radius: var(--fr-card-radius);
  background: var(--fr-bg-1);
  box-shadow: 0 18px 44px rgb(0 0 0 / 0.12);
}

.model-table th { background: #273237; color: #dfe6e8; }
.model-table tbody tr:nth-child(even) { background: rgb(255 255 255 / 0.018); }
.model-table tbody tr:hover { background: rgb(240 118 56 / 0.055); }

.fr-application-list article > i {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid #48565c;
  border-radius: 50%;
}

.fr-product-faq details { border-color: #39474d; }
.fr-product-faq details[open] { background: rgb(255 255 255 / 0.018); }
.fr-product-faq summary { color: #dde4e6; }
.fr-product-faq details[open] summary { color: #fff; }
.fr-product-faq details[open] summary i { color: var(--fr-orange); transform: rotate(45deg); }

/* Supporting pages: add depth without inventing company photography. */
.fr-support-v6 .fr-support-intro {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 78% 18%, rgb(112 136 146 / 0.13), transparent 31%),
    linear-gradient(135deg, #141a1d, #111618);
}

.fr-support-v6 .fr-support-intro::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .22;
  background-image:
    linear-gradient(rgb(159 177 185 / 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgb(159 177 185 / 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, transparent 38%, #000 100%);
}

.fr-about-v6 .fr-about-story-grid { align-items: stretch; }

.fr-about-v6 .fr-about-at-a-glance {
  position: relative;
  overflow: hidden;
  border-color: #46545b;
  background: linear-gradient(145deg, #222c31, #1b2327);
  box-shadow: var(--fr-shadow-soft);
}

.fr-about-v6 .fr-about-at-a-glance::after {
  content: "";
  position: absolute;
  top: -42px;
  right: -42px;
  width: 120px;
  height: 120px;
  border: 1px solid rgb(240 118 56 / 0.22);
  border-radius: 50%;
  box-shadow: 0 0 0 18px rgb(240 118 56 / 0.035), 0 0 0 38px rgb(240 118 56 / 0.025);
  pointer-events: none;
}

.fr-about-v6 .fr-about-range article { border-top-color: #46535a; }

.fr-about-v6 .fr-about-range article:hover h3 { color: #fff; }

.fr-oem-v6 .fr-oem-intro-photo img {
  border: 1px solid #3f4c52;
  filter: saturate(.72) contrast(1.04);
  box-shadow: var(--fr-shadow-soft);
}

.fr-oem-v6 .fr-oem-workflow { counter-reset: fr-workflow; }

.fr-oem-v6 .fr-oem-workflow li {
  counter-increment: fr-workflow;
  position: relative;
  border-top-color: #8f694f;
}

.fr-oem-v6 .fr-oem-workflow li::before {
  content: "0" counter(fr-workflow);
  display: block;
  margin-bottom: 11px;
  color: var(--fr-orange);
  font: 600 10px/1.4 var(--font-mono);
  letter-spacing: .1em;
}

.fr-oem-v6 .fr-oem-file-panel {
  border-color: #47565d;
  background: linear-gradient(145deg, #222c31, #1b2327);
  box-shadow: var(--fr-shadow-soft);
}

/* News and contact pages. */
.news-page .news-hero { padding-bottom: 26px; }
.news-page .catalog-section { padding-top: 18px; }

.news-card > a {
  height: 100%;
  transition: border-color var(--fr-fast) ease, transform var(--fr-fast) ease;
}

.news-card > a:hover {
  border-bottom-color: #68777e;
  transform: translateY(-2px);
}

.news-card .fr-news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 0;
}

.news-card .fr-news-card-meta span,
.news-card .fr-news-card-meta time {
  color: var(--fr-text-muted);
  font-size: 10px;
  line-height: 1.5;
}

.news-card .fr-news-card-meta span { color: var(--fr-orange); text-transform: uppercase; letter-spacing: .08em; }

.contact-page .contact-layout {
  background:
    radial-gradient(circle at 14% 18%, rgb(91 115 125 / 0.12), transparent 28%),
    var(--fr-bg-0);
}

.contact-page .quote-form { box-shadow: var(--fr-shadow-soft), inset 0 1px rgb(255 255 255 / 0.025); }

.contact-page .fr-footer-v6 { padding-top: 46px; }
.contact-page .fr-footer-columns { grid-template-columns: minmax(0, .8fr) minmax(300px, 1.2fr); }
.contact-page .fr-footer-contact { max-width: 520px; }

/* Compact, always-visible conversion rail with reliable icon alignment. */
.contact-rail.is-persistent,
.contact-rail.is-persistent.is-open {
  z-index: 90;
  width: 48px;
  gap: 4px;
  padding: 4px;
  border-color: rgb(255 255 255 / 0.13);
  border-radius: 10px;
  background: rgb(13 18 20 / 0.95);
  box-shadow: 0 18px 46px rgb(0 0 0 / 0.32);
}

.contact-rail.is-persistent .contact-rail-lead,
.contact-rail.is-persistent .contact-rail-action,
.contact-rail.is-persistent.is-open .contact-rail-action {
  width: 38px;
  height: 38px;
  min-height: 38px;
  border-radius: 7px;
}

.contact-rail.is-persistent :is(.contact-rail-lead, .contact-rail-action) > i {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  line-height: 1;
}

.contact-rail.is-persistent :is(.contact-rail-lead, .contact-rail-action) > i::before {
  width: auto;
  height: auto;
  line-height: 1;
}

/* Footer: lighter separation and a compact two-column variant on Contact. */
.site-footer.fr-footer-v6 {
  background: #192125;
  border-top-color: #3c494f;
}

.fr-footer-v6 .fr-footer-form {
  padding: 22px;
  border: 1px solid #39474d;
  border-radius: var(--fr-card-radius);
  background: rgb(15 21 24 / 0.35);
}

.fr-footer-bottom { border-top-color: #3b484e; }

@media (max-width: 1100px) {
  .product-detail-page .product-detail-hero {
    grid-template-columns: minmax(0, .9fr) minmax(390px, 1.1fr);
    gap: 42px;
  }
}

@media (max-width: 980px) {
  .site-header { z-index: 100; }
  .site-header .site-nav { z-index: 120; }
  .product-detail-page .product-detail-hero {
    grid-template-columns: minmax(0, .92fr) minmax(350px, 1.08fr);
    gap: 32px;
  }
  .contact-page .fr-footer-columns { grid-template-columns: 1fr 1fr; }
  .contact-rail.is-persistent,
  .contact-rail.is-persistent.is-open {
    right: 10px;
    bottom: 10px;
    width: auto;
    padding: 4px;
  }
  .contact-rail.is-persistent .contact-rail-lead { display: none; }
  .contact-rail.is-persistent .contact-rail-actions,
  .contact-rail.is-persistent.is-open .contact-rail-actions { gap: 4px; }
}

@media (max-width: 767px) {
  :root { --fr-section-space: 42px; }

  .site-header .brand-image .brand-logo { width: 171px; }

  .fr-home .fr-home-family:hover,
  .catalog-page .category-card:hover,
  .category-page .catalog-product-card:hover,
  .related-product-grid .catalog-product-card:hover,
  .news-card > a:hover { transform: none; box-shadow: none; }

  .fr-home .fr-home-about-grid { align-items: start; }

  .product-detail-page .product-detail-hero {
    grid-template-columns: 1fr;
    gap: 27px;
  }

  .product-detail-page .product-detail-gallery { max-width: 560px; }
  .product-detail-page .fr-product-stage img { padding: 14px; }
  .product-detail-page .product-detail-copy h1 { font-size: clamp(29px, 8.4vw, 39px); }

  .product-detail-page .fr-detail-section { padding-block: 38px; }

  .product-detail-page .fr-related-grid {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(235px, 78vw);
    grid-template-columns: none;
    gap: 12px;
    overflow-x: auto;
    padding: 2px 2px 14px;
    scroll-snap-type: x proximity;
    scrollbar-width: thin;
  }

  .product-detail-page .fr-related-grid .catalog-product-card { scroll-snap-align: start; }
  .product-detail-page .fr-related-grid .catalog-product-card {
    min-height: 310px;
    overflow: hidden;
  }
  .product-detail-page .fr-related-grid .catalog-product-card > a {
    display: grid;
    min-height: 308px;
    grid-template-columns: 1fr;
    grid-template-rows: 176px 1fr;
  }
  .product-detail-page .fr-related-grid .catalog-product-image {
    width: 100%;
    height: 176px;
    min-height: 176px;
    grid-column: 1;
    grid-row: 1;
  }
  .product-detail-page .fr-related-grid .catalog-product-copy {
    position: static;
    z-index: 1;
    grid-column: 1;
    grid-row: 2;
    width: 100%;
    min-height: 132px;
    padding: 15px;
    background: var(--fr-bg-1);
  }
  .product-detail-page .fr-related-grid .catalog-product-copy h3 {
    min-height: 0;
    margin-block: 7px 17px;
    font-size: 14px;
    line-height: 1.4;
  }

  .fr-support-v6 .fr-support-intro::before { opacity: .14; background-size: 36px 36px; }

  .contact-page .fr-footer-columns { grid-template-columns: 1fr; }
  .contact-page .fr-footer-contact { border-top: 1px solid #36434a; padding-top: 29px; }

  .fr-footer-v6 .fr-footer-form { padding: 18px; }

  .contact-rail.is-persistent .contact-rail-action,
  .contact-rail.is-persistent.is-open .contact-rail-action {
    width: 36px;
    height: 36px;
    min-height: 36px;
  }
}

/* Product center becomes a compact buyer directory on small screens. */
@media (max-width: 620px) {
  .catalog-page .category-grid { gap: 10px; }

  .catalog-page .category-card > a,
  .catalog-page .category-card:first-child > a {
    grid-template-columns: 112px minmax(0, 1fr);
    grid-template-rows: none;
    min-height: 174px;
  }

  .catalog-page .category-card-image,
  .catalog-page .category-card:first-child .category-card-image {
    width: 112px;
    height: 100%;
    min-height: 174px;
  }

  .catalog-page .category-card-image img { padding: 11px; }
  .catalog-page .category-card-copy { padding: 16px 14px; }
  .catalog-page .category-card-copy > span { font-size: 8px; line-height: 1.45; }
  .catalog-page .category-card-copy h2 { min-height: 0; margin: 7px 0 9px; font-size: 16px; line-height: 1.24; }
  .catalog-page .category-card-copy ul { min-height: 0; gap: 3px; font-size: 9.5px; line-height: 1.45; }
  .catalog-page .category-card-copy li:nth-child(n+3) { display: none; }
  .catalog-page .category-card-copy strong { padding-top: 10px; font-size: 9.5px; }

  .contact-page .quote-form .form-row,
  .fr-footer-form .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 380px) {
  .catalog-page .category-card > a,
  .catalog-page .category-card:first-child > a { grid-template-columns: 96px minmax(0, 1fr); }
  .catalog-page .category-card-image,
  .catalog-page .category-card:first-child .category-card-image { width: 96px; }
  .catalog-page .category-card-copy { padding-inline: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .site-header.is-scrolled,
  .fr-detail-nav-wrap,
  .fr-banner-controls,
  .contact-rail.is-persistent { backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media print {
  .contact-rail,
  .fr-banner-controls { display: none !important; }
}