.catalog-product-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 0;
  min-height: 70vh;
}

.catalog-product-sidebar {
  position: sticky;
  top: var(--header-height);
  align-self: start;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  background: var(--color-bg-light);
  border-right: 1px solid var(--color-border);
}

.catalog-product-sidebar__head {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 12px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.catalog-product-sidebar__body {
  padding: 18px 0 28px;
}

.catalog-product-sidebar__label {
  display: block;
  padding: 0 20px 12px;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.catalog-product-sidebar__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 20px;
  color: var(--color-text);
  font-size: var(--text-sm);
  border-bottom: 1px solid rgba(0,0,0,.05);
  transition: background var(--transition), color var(--transition);
}

.catalog-product-sidebar__link:hover {
  background: var(--color-bg-mid);
  color: var(--color-primary);
}

.catalog-product-sidebar__link.is-active {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.catalog-product-sidebar__link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.catalog-product-sidebar__link.is-active svg {
  color: var(--color-primary);
}

.catalog-product-sidebar__note {
  margin: 18px 20px 0;
  padding: 16px;
  border: 1px solid rgba(0,50,91,.12);
  border-radius: var(--radius-md);
  background: rgba(0,50,91,.04);
}

.catalog-product-sidebar__note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.catalog-product-sidebar__note p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.catalog-product-main {
  min-width: 0;
  padding: 0 0 56px;
  overflow-x: clip;
  background:
    linear-gradient(180deg, rgba(0,50,91,.04) 0, rgba(0,50,91,0) 240px),
    var(--color-white);
}

.catalog-product-main .container {
  max-width: 1280px;
}

.catalog-product-path {
  padding: 14px 0;
  color: rgba(255,255,255,.82);
}

.catalog-product-path .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  width: 100%;
  min-width: 0;
  font-size: var(--text-sm);
}

.catalog-product-path a {
  color: var(--color-primary-light);
}

.catalog-product-path a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.catalog-product-path span {
  color: var(--color-white);
  font-weight: 600;
}

.catalog-product-path .breadcrumb a,
.catalog-product-path .breadcrumb span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.catalog-product-content {
  padding: 30px 0 0;
}

.catalog-product-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--color-primary-light);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.catalog-product-eyebrow::before {
  content: "";
  width: 38px;
  height: 1px;
  background: currentColor;
}

.catalog-product-hero {
  display: grid;
  grid-template-columns: minmax(340px, 480px) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  padding: 24px 30px;
  border: 1px solid rgba(0,50,91,.08);
  border-radius: 28px;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  box-shadow: 0 24px 64px rgba(0, 39, 72, .08);
}

.catalog-product-media {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.catalog-product-media__frame {
  position: relative;
  min-height: 324px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border-radius: 20px;
  background: transparent;
  overflow: hidden;
}

.catalog-product-media__frame::after {
  content: none;
}

.catalog-product-media__frame img {
  position: relative;
  z-index: 1;
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
  filter: drop-shadow(0 24px 28px rgba(0, 28, 56, .18));
}

.catalog-product-media__frame iframe {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 18px;
  background: #000;
}

.catalog-product-gallery {
  margin-top: 18px;
}

.catalog-product-gallery__controls {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.catalog-product-gallery__nav {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid rgba(0,50,91,.16);
  border-radius: 999px;
  background: var(--color-white);
  color: var(--color-primary);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
}

.catalog-product-gallery__nav:hover {
  border-color: var(--color-primary);
  background: rgba(0,50,91,.05);
  transform: translateY(-1px);
}

.catalog-product-gallery__nav svg {
  width: 18px;
  height: 18px;
}

.catalog-product-gallery__strip {
  display: flex;
  gap: 10px;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scroll-behavior: smooth;
}

.catalog-product-gallery__thumb {
  flex: 0 0 auto;
  width: 88px;
  height: 88px;
  padding: 0;
  border: 1px solid rgba(0,50,91,.12);
  border-radius: 16px;
  background: var(--color-white);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.catalog-product-gallery__thumb:hover {
  border-color: rgba(0,50,91,.28);
  transform: translateY(-1px);
}

.catalog-product-gallery__thumb.is-active {
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px var(--color-primary);
}

.catalog-product-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.catalog-product-gallery__thumb--link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.catalog-product-gallery__thumb-card {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  background: linear-gradient(180deg, rgba(0,50,91,.06) 0%, rgba(0,50,91,.02) 100%);
  color: var(--color-primary);
  text-align: center;
}

.catalog-product-gallery__thumb-card strong {
  font-size: .7rem;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.catalog-product-gallery__thumb-card span {
  font-size: .66rem;
  line-height: 1;
  opacity: .78;
}

.catalog-product-gallery__thumb-card svg {
  width: 20px;
  height: 20px;
}

.catalog-product-video-modal[hidden] {
  display: none;
}

.catalog-product-video-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: rgba(0, 16, 34, .72);
  backdrop-filter: blur(6px);
}

.catalog-product-video-modal__dialog {
  width: min(960px, 100%);
  max-height: min(88vh, 900px);
  overflow: auto;
  padding: 18px;
  border-radius: 24px;
  background: #0b1626;
  box-shadow: 0 32px 80px rgba(0, 18, 38, .38);
}

.catalog-product-video-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.catalog-product-video-modal__header strong {
  color: var(--color-white);
  font-size: 1rem;
  line-height: 1.3;
}

.catalog-product-video-modal__close {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  color: var(--color-white);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.catalog-product-video-modal__close:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.28);
  transform: translateY(-1px);
}

.catalog-product-video-modal__close svg {
  width: 18px;
  height: 18px;
}

.catalog-product-video-modal__player {
  border-radius: 20px;
  overflow: hidden;
  background: #000;
}

.catalog-product-video-modal__player iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  background: #000;
}

.catalog-product-video-modal__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.catalog-product-video-modal__meta p {
  margin: 0;
  color: rgba(255,255,255,.74);
  font-size: .92rem;
  line-height: 1.5;
}

.catalog-product-video-modal__meta .btn {
  flex: 0 0 auto;
}

.catalog-product-media__caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.catalog-product-media__caption a {
  color: var(--color-primary);
  font-weight: 600;
}

.catalog-product-summary {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
}

.catalog-product-summary h1 {
  max-width: 25ch;
  margin: 0 0 14px;
  color: var(--color-primary);
  font-size: clamp(1.66rem, 1.9vw, 2.23rem);
  line-height: 1.1;
  text-wrap: balance;
}

.catalog-product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.catalog-product-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(0,50,91,.06);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.catalog-product-price {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
  margin-bottom: 14px;
}

.catalog-product-price strong {
  color: var(--color-accent-red);
  font-size: clamp(1.53rem, 1.7vw, 2rem);
  line-height: 1;
}

.catalog-product-price span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.catalog-product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 0;
}

.catalog-product-tab-shell {
  margin-top: 26px;
}

.catalog-product-tab-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 18px;
}

.catalog-product-tab-nav__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 30px;
  border: 1px solid rgba(0,50,91,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.92);
  color: var(--color-primary);
  font: inherit;
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.catalog-product-tab-nav__button:hover {
  border-color: rgba(0,50,91,.22);
  box-shadow: 0 10px 24px rgba(0, 39, 72, .08);
}

.catalog-product-tab-nav__button.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 14px 30px rgba(0, 39, 72, .14);
}

.catalog-product-jumpnav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.catalog-product-jumpnav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(0,50,91,.14);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.catalog-product-jumpnav a:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.catalog-product-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.catalog-product-fact {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--color-bg-light);
  border: 1px solid rgba(0,50,91,.07);
}

.catalog-product-fact small {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.catalog-product-fact strong {
  display: block;
  color: var(--color-primary);
  font-size: var(--text-base);
  line-height: 1.45;
}

.catalog-product-sections {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}

.catalog-product-sections--tabs {
  margin-top: 0;
}

.catalog-product-sections--tabs .catalog-product-section {
  display: none;
}

.catalog-product-sections--tabs .catalog-product-section.is-active {
  display: block;
}

.catalog-product-section {
  padding: 32px 34px;
  border-top: 1px solid rgba(0,50,91,.1);
  border-radius: 26px;
  background: var(--color-white);
  box-shadow: 0 18px 42px rgba(0, 39, 72, .05);
}

.catalog-product-section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--color-primary-light);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.catalog-product-section__eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: currentColor;
}

.catalog-product-section h2 {
  margin-bottom: 18px;
  color: var(--color-primary);
  font-size: clamp(1.66rem, 1.9vw, 2.23rem);
  line-height: 1.08;
}

.catalog-product-copy {
  max-width: 78ch;
}

.catalog-product-copy p {
  color: var(--color-text);
  line-height: 1.9;
}

.catalog-product-copy p + p {
  margin-top: 16px;
}

.catalog-product-copy ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.catalog-product-copy ul + p {
  margin-top: 28px;
}

.catalog-product-copy li {
  position: relative;
  padding-left: 24px;
  color: var(--color-text);
  line-height: 1.8;
}

.catalog-product-copy li + li {
  margin-top: 10px;
}

.catalog-product-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--color-accent-red);
  transform: translateY(-50%);
}

.catalog-product-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}

.catalog-product-spec-groups {
  display: grid;
  gap: 24px;
}

.catalog-product-spec-group {
  padding: 22px 24px 24px;
  border: 1px solid rgba(0,50,91,.08);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(245,248,251,.85), rgba(255,255,255,.98));
}

.catalog-product-spec-group h3 {
  margin: 0 0 16px;
  color: var(--color-primary);
  font-size: clamp(1.05rem, 1.15vw, 1.2rem);
  line-height: 1.25;
}

.catalog-product-spec-group .catalog-product-specs {
  grid-template-columns: 1fr;
  gap: 0;
}

.catalog-product-spec {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  padding: 14px 0;
  border-bottom: 1px solid rgba(0,50,91,.08);
}

.catalog-product-spec dt {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.catalog-product-spec dd {
  margin: 0;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  text-align: right;
  line-height: 1.5;
}

.catalog-product-attachments {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.catalog-product-attachment {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  padding: 20px;
  border: 1px solid rgba(0,50,91,.1);
  border-radius: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.catalog-product-attachment:hover {
  transform: translateY(-2px);
  border-color: rgba(0,50,91,.2);
  box-shadow: 0 18px 30px rgba(0, 39, 72, .08);
}

.catalog-product-attachment__type {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(217,52,59,.08);
  color: var(--color-accent-red);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.catalog-product-attachment strong {
  display: block;
  margin: 10px 0 8px;
  color: var(--color-primary);
  font-size: var(--text-base);
  line-height: 1.4;
}

.catalog-product-attachment p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.catalog-product-attachment svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--color-primary-light);
}

.catalog-product-source {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  margin-top: 14px;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--color-bg-light);
}

.catalog-product-source p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
}

@media (max-width: 1180px) {
  .catalog-product-layout {
    grid-template-columns: 1fr;
  }

  .catalog-product-sidebar {
    position: static;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .catalog-product-hero {
    grid-template-columns: 1fr;
  }

  .catalog-product-media {
    position: static;
  }
}

@media (max-width: 860px) {
  .catalog-product-sidebar {
    display: none;
  }

  .catalog-product-main {
    padding-bottom: 42px;
  }

  .catalog-product-content {
    padding-top: 22px;
  }

  .catalog-product-hero,
  .catalog-product-section {
    padding: 24px;
    border-radius: 22px;
  }

  .catalog-product-media__frame {
    min-height: 320px;
  }

  .catalog-product-summary h1 {
    max-width: none;
  }

  .catalog-product-facts,
  .catalog-product-specs,
  .catalog-product-attachments {
    grid-template-columns: 1fr;
  }

  .catalog-product-source {
    grid-template-columns: 1fr;
  }

  .catalog-product-spec-group {
    padding: 20px;
  }
}

@media (max-width: 640px) {
  .catalog-product-main .container {
    padding: 0 20px;
  }

  .catalog-product-path {
    padding: 12px 20px;
  }

  .catalog-product-path .breadcrumb {
    align-items: flex-start;
    gap: 4px 6px;
    font-size: var(--text-sm);
    line-height: 1.45;
  }

  .catalog-product-path .breadcrumb svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    margin-top: .18em;
  }

  .catalog-product-hero,
  .catalog-product-section {
    padding: 20px;
  }

  .catalog-product-tab-nav {
    display: grid;
    grid-template-columns: 1fr;
  }

  .catalog-product-tab-nav__button {
    width: 100%;
    justify-content: flex-start;
  }

  .catalog-product-media__frame {
    min-height: 320px;
    padding: 12px;
  }

  .catalog-product-media__frame img {
    max-height: 260px;
  }

  .catalog-product-media__frame iframe {
    border-radius: 14px;
  }

  .catalog-product-gallery {
    margin-top: 14px;
  }

  .catalog-product-gallery__controls {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    align-items: center;
    gap: 8px;
    width: 100%;
    min-width: 0;
  }

  .catalog-product-gallery__nav {
    width: 36px;
    height: 36px;
  }

  .catalog-product-gallery__strip {
    min-width: 0;
    width: 100%;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .catalog-product-gallery__thumb {
    width: 72px;
    height: 72px;
    border-radius: 14px;
  }

  .catalog-product-gallery__thumb-card strong {
    font-size: .62rem;
  }

  .catalog-product-gallery__thumb-card span {
    font-size: .58rem;
  }

  .catalog-product-video-modal {
    padding: 16px;
  }

  .catalog-product-video-modal__dialog {
    padding: 14px;
    border-radius: 20px;
  }

  .catalog-product-video-modal__header strong {
    font-size: .92rem;
  }

  .catalog-product-video-modal__meta {
    display: grid;
    grid-template-columns: 1fr;
  }

  .catalog-product-video-modal__meta .btn {
    width: 100%;
    justify-content: center;
  }

  .catalog-product-actions,
  .catalog-product-jumpnav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .catalog-product-actions .btn {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
    justify-content: center;
  }
}