:root {
  --product-navy: #05162f;
  --product-navy-2: #092a4a;
  --product-cyan: #00a6d6;
  --product-blue: #0077b6;
  --product-yellow: #fff000;
  --product-mist: #f3f6f8;
  --product-line: #d9e2e8;
  --product-text: #10233f;
  --product-muted: #5d6b7a;
}

.product-page {
  min-height: 100vh;
  background: #dce4e8;
}

.product-shell {
  margin: 12px;
  overflow: hidden;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 24px 80px rgba(5, 22, 47, .12);
}

.product-wrap {
  width: min(1320px, calc(100% - 40px));
  margin-inline: auto;
}

.product-nav {
  min-height: 88px;
  background: rgba(4, 18, 38, .98);
  color: #fff;
}

.product-nav-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.product-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.product-brand-mark {
  color: var(--product-yellow);
  font: 600 24px/1 Geist, "Noto Sans SC", sans-serif;
}

.product-brand-divider {
  width: 1px;
  height: 28px;
  background: rgba(255, 255, 255, .2);
}

.product-brand-company,
.product-nav-links {
  font-size: 14px;
}

.product-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(255, 255, 255, .72);
}

.product-nav-links a:hover {
  color: #fff;
}

.product-nav-links .active {
  color: #fff;
  border-bottom: 2px solid var(--product-cyan);
  padding-bottom: 10px;
}

.product-mobile-back {
  display: none;
  color: rgba(255,255,255,.8);
}

.product-hero {
  position: relative;
  overflow: hidden;
  padding: 94px 0 86px;
  color: #fff;
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,.025) 0, rgba(255,255,255,.025) 1px, transparent 1px, transparent 14px),
    linear-gradient(155deg, #041226 0%, #082a48 48%, #03101f 100%);
}

.product-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .14;
  background-image:
    linear-gradient(rgba(0,166,214,.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,166,214,.25) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.product-hero-content {
  position: relative;
  z-index: 1;
}

.product-kicker {
  color: var(--product-cyan);
  font: 500 11px/1.2 Geist, sans-serif;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.product-hero h1 {
  max-width: 860px;
  margin-top: 18px;
  font: 500 clamp(40px, 5vw, 68px)/1.02 Geist, "Noto Sans SC", sans-serif;
  letter-spacing: -.045em;
}

.product-hero-copy {
  max-width: 700px;
  margin-top: 22px;
  color: rgba(255,255,255,.65);
  line-height: 1.8;
}

.catalog-section {
  padding: 72px 0 104px;
  background: var(--product-mist);
}

.catalog-filter {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--product-line);
  border-radius: 12px;
  background: #fff;
}

.filter-field label {
  display: block;
  margin-bottom: 7px;
  color: var(--product-muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.filter-control {
  width: 100%;
  height: 44px;
  padding: 0 13px;
  border: 1px solid var(--product-line);
  border-radius: 5px;
  background: #fff;
  color: var(--product-text);
  font-size: 14px;
}

.filter-control:focus {
  outline: 2px solid rgba(0,166,214,.35);
  border-color: var(--product-cyan);
}

.catalog-status {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 28px 0 20px;
  color: var(--product-muted);
  font-size: 13px;
}

.catalog-category + .catalog-category {
  margin-top: 46px;
}

.category-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  color: var(--product-text);
  font: 500 25px/1.2 Geist, "Noto Sans SC", sans-serif;
}

.category-heading::before {
  content: "";
  width: 34px;
  height: 3px;
  background: var(--product-cyan);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.catalog-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--product-line);
  border-radius: 14px;
  background: #fff;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.catalog-card:hover {
  transform: translateY(-5px);
  border-color: #a8d4e1;
  box-shadow: 0 20px 46px rgba(5,22,47,.1);
}

.catalog-card-image {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: linear-gradient(145deg, #eaf0f4, #fff);
}

.catalog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: saturate(.75) contrast(1.04);
  transition: transform .45s ease;
}

.catalog-card:hover .catalog-card-image img {
  transform: scale(1.025);
}

.catalog-card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(5,22,47,.18));
  pointer-events: none;
}

.catalog-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 25px;
}

.catalog-card-model {
  color: var(--product-blue);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
}

.catalog-card h3 {
  margin-top: 10px;
  color: var(--product-text);
  font: 500 21px/1.3 Geist, "Noto Sans SC", sans-serif;
}

.protocol-direction {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 15px;
  padding: 6px 9px;
  border-radius: 3px;
  background: #edf4f7;
  color: #34506b;
  font-size: 11px;
}

.catalog-card-summary {
  margin-top: 15px;
  color: var(--product-muted);
  font-size: 14px;
  line-height: 1.7;
}

.catalog-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 22px;
  color: var(--product-blue);
  font-size: 14px;
  font-weight: 500;
}

.catalog-empty,
.product-message {
  padding: 48px 24px;
  border: 1px solid var(--product-line);
  border-radius: 12px;
  background: #fff;
  color: var(--product-muted);
  text-align: center;
}

.product-footer {
  padding: 52px 0 28px;
  background: #020b17;
  color: rgba(255,255,255,.55);
}

.product-footer-top {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 40px;
}

.product-footer-name {
  margin-top: 12px;
  color: #fff;
}

.product-footer-contact {
  text-align: right;
  font-size: 13px;
  line-height: 1.9;
}

.product-footer-bottom {
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 12px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  color: rgba(255,255,255,.52);
  font-size: 12px;
}

.breadcrumbs a:hover {
  color: #fff;
}

.detail-hero {
  padding: 60px 0 72px;
}

.detail-hero-grid {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 56px;
  align-items: center;
}

.detail-main-image {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px;
  background: rgba(255,255,255,.04);
}

.detail-main-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: saturate(.72);
}

.detail-model {
  color: var(--product-cyan);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
}

.detail-title {
  margin-top: 14px;
  font: 500 clamp(36px, 4vw, 57px)/1.05 Geist, "Noto Sans SC", sans-serif;
  letter-spacing: -.04em;
  word-break: keep-all;
}

.detail-protocol {
  display: inline-flex;
  margin-top: 22px;
  padding: 8px 11px;
  border: 1px solid rgba(0,166,214,.38);
  border-radius: 4px;
  color: #83dff5;
  font-size: 12px;
}

.detail-summary {
  margin-top: 24px;
  color: rgba(255,255,255,.68);
  line-height: 1.85;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.detail-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 21px;
  border-radius: 6px;
  background: var(--product-cyan);
  color: #03101f;
  font-weight: 500;
}

.detail-button.secondary {
  border: 1px solid rgba(255,255,255,.4);
  background: transparent;
  color: #fff;
}

.detail-content {
  padding: 84px 0 104px;
  background: #fff;
}

.detail-section + .detail-section {
  margin-top: 72px;
}

.detail-section h2 {
  color: var(--product-text);
  font: 500 clamp(28px, 3vw, 40px)/1.1 Geist, "Noto Sans SC", sans-serif;
  letter-spacing: -.03em;
}

.detail-section-lead {
  margin-top: 14px;
  color: var(--product-muted);
  line-height: 1.75;
}

.feature-grid,
.industry-grid,
.download-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 26px;
}

.detail-panel {
  padding: 22px;
  border: 1px solid var(--product-line);
  border-radius: 10px;
  background: var(--product-mist);
}

.feature-number {
  color: var(--product-cyan);
  font-size: 11px;
  font-weight: 500;
}

.detail-panel h3 {
  margin-top: 9px;
  font: 500 17px/1.4 Geist, "Noto Sans SC", sans-serif;
}

.spec-table {
  width: 100%;
  margin-top: 26px;
  overflow: hidden;
  border: 1px solid var(--product-line);
  border-radius: 10px;
  border-collapse: separate;
  border-spacing: 0;
}

.spec-table th,
.spec-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--product-line);
  text-align: left;
  font-size: 14px;
}

.spec-table th {
  width: 34%;
  background: var(--product-mist);
  font-weight: 500;
}

.spec-table td {
  width: 100%;
}

.spec-name {
  display: inline;
  margin-right: .5em;
  font-weight: 500;
}

.spec-value {
  color: var(--product-muted);
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 26px;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid var(--product-line);
}

.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--product-line);
  border-radius: 9px;
}

.download-item.disabled {
  color: var(--product-muted);
  background: var(--product-mist);
}

.download-state {
  color: var(--product-blue);
  font-size: 12px;
}

.download-item.disabled .download-state {
  color: var(--product-muted);
}

.faq-list {
  margin-top: 24px;
  border-top: 1px solid var(--product-line);
}

.faq-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--product-line);
}

.faq-item h3 {
  font-size: 17px;
  font-weight: 500;
}

.faq-item p {
  margin-top: 10px;
  color: var(--product-muted);
  line-height: 1.75;
}

.support-note {
  margin-top: 20px;
  padding: 20px;
  border-left: 3px solid var(--product-cyan);
  background: #edf6f8;
  color: var(--product-muted);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .product-shell { margin: 24px; }
  .product-wrap { width: min(1320px, calc(100% - 64px)); }
}

@media (min-width: 1200px) {
  .product-shell { margin: 36px; }
}

@media (max-width: 1023px) {
  .catalog-filter { grid-template-columns: repeat(2, 1fr); }
  .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .detail-hero-grid { grid-template-columns: 1fr; }
  .detail-main-image { min-height: 360px; }
  .feature-grid, .industry-grid, .download-grid, .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  .product-shell { margin: 12px; }
  .product-wrap { width: calc(100% - 32px); }
  .product-nav-inner { min-height: 76px; }
  .product-brand-company, .product-nav-links { display: none; }
  .product-mobile-back { display: block; }
  .product-hero { padding: 72px 0 64px; }
  .catalog-section, .detail-content { padding: 56px 0 72px; }
  .catalog-filter { grid-template-columns: 1fr; }
  .catalog-grid, .feature-grid, .industry-grid, .download-grid, .article-grid, .gallery-grid { grid-template-columns: 1fr; }
  .catalog-status { flex-direction: column; }
  .product-footer-top { flex-direction: column; }
  .product-footer-contact { text-align: left; }
  .detail-title { word-break: normal; }
  .detail-actions { flex-direction: column; }
  .detail-button { width: 100%; }
  .spec-table th, .spec-table td { display: block; width: 100%; }
  .spec-table th { border-bottom: 0; padding-bottom: 7px; }
  .spec-table td { padding-top: 7px; }
}

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