/* ── Design tokens ── */
:root {
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-text: #1a2332;
  --color-text-muted: #5a6578;
  --color-border: #e2e6ed;
  --color-accent: #0066cc;
  --color-accent-dark: #004d99;
  --color-accent-glow: rgba(0, 102, 204, 0.12);
  --color-spectrum: linear-gradient(
    90deg,
    #7b2fbe 0%,
    #0000ff 20%,
    #00c853 40%,
    #ffeb3b 60%,
    #ff9800 80%,
    #e60000 100%
  );
  --font-sans: "Inter", "Noto Sans SC", system-ui, sans-serif;
  --container-max: 72rem;
  --header-h: clamp(3.5rem, 8vw, 4.5rem);
  --radius: clamp(0.5rem, 1vw, 0.75rem);
  --shadow-sm: 0 1px 3px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 4px 24px rgba(26, 35, 50, 0.08);
  --transition: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: clamp(15px, 1.1vw + 12px, 18px);
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-dark);
}

.container {
  width: min(100% - clamp(1.25rem, 5vw, 3rem), var(--container-max));
  margin-inline: auto;
}

/* ── Header ── */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
}

.logo:hover {
  color: inherit;
}

.logo-mark {
  width: clamp(1.75rem, 4vw, 2.25rem);
  height: clamp(1.75rem, 4vw, 2.25rem);
  flex-shrink: 0;
  display: block;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text strong {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-text small {
  font-size: clamp(0.65rem, 1.2vw, 0.75rem);
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
}

.nav a {
  color: var(--color-text-muted);
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  font-weight: 500;
}

.nav a:hover {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.65rem, 2vw, 0.85rem) clamp(1.25rem, 3vw, 1.75rem);
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-full {
  width: 100%;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: clamp(32rem, 90vh, 44rem);
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-h) + clamp(2rem, 6vw, 4rem)) clamp(3rem, 8vw, 5rem);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #eef2f8 0%, #f8f9fb 50%, #e8edf5 100%);
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 102, 204, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 204, 0.04) 1px, transparent 1px);
  background-size: clamp(40px, 8vw, 64px) clamp(40px, 8vw, 64px);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
}

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

.hero-label {
  display: inline-block;
  font-size: clamp(0.75rem, 1.5vw, 0.85rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: clamp(0.75rem, 2vw, 1.25rem);
}

.hero h1 {
  font-size: clamp(2rem, 5vw + 0.5rem, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 14ch;
  margin-bottom: clamp(1rem, 3vw, 1.5rem);
}

.hero-spectrum-underline {
  position: relative;
  display: inline-block;
}

.hero-spectrum-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.12em;
  height: clamp(3px, 0.35vw, 4px);
  background: var(--color-spectrum);
  border-radius: 2px;
  opacity: 0.9;
}

.hero-desc {
  font-size: clamp(0.95rem, 1.8vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 42rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(0.75rem, 2vw, 1rem);
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 8rem), 1fr));
  gap: clamp(1rem, 3vw, 2rem);
  max-width: 36rem;
  padding-block-start: clamp(1.5rem, 4vw, 2rem);
  border-block-start: 1px solid var(--color-border);
}

.hero-stats dt {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.hero-stats dd {
  font-size: clamp(0.8rem, 1.5vw, 0.9rem);
  color: var(--color-text-muted);
  margin-block-start: 0.25rem;
}

/* ── Section shared ── */
section {
  padding-block: clamp(3.5rem, 10vw, 6rem);
}

.section-header {
  max-width: 38rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section-tag {
  display: inline-block;
  font-size: clamp(0.7rem, 1.2vw, 0.8rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
}

/* ── Products ── */
.products {
  background: var(--color-surface);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
}

.product-card {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow var(--transition), border-color var(--transition), transform 0.25s ease;
}

.product-card:hover {
  border-color: rgba(0, 102, 204, 0.25);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-icon {
  width: clamp(2.5rem, 6vw, 3rem);
  height: clamp(2.5rem, 6vw, 3rem);
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.product-card h3 {
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.product-card > p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.product-specs {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.product-specs li {
  font-size: clamp(0.7rem, 1.2vw, 0.8rem);
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  border-radius: 999px;
}

/* ── Applications ── */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
}

.app-item {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-inline-start: 3px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow-sm);
}

.app-num {
  font-size: clamp(0.75rem, 1.2vw, 0.85rem);
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.app-item h3 {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 600;
  margin-block: 0.5rem 0.35rem;
}

.app-item p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
}

.app-item-links {
  margin-top: clamp(0.85rem, 2vw, 1.1rem);
  padding-top: clamp(0.75rem, 2vw, 0.9rem);
  border-top: 1px solid var(--color-border);
}

.app-catalog-link {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  font-size: clamp(0.82rem, 1.4vw, 0.9rem);
  font-weight: 600;
  color: var(--color-accent);
}

.app-catalog-link:hover {
  color: var(--color-accent-dark);
}

.app-product-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  margin-top: 0.65rem;
}

.app-product-links a {
  font-size: clamp(0.72rem, 1.2vw, 0.8rem);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.app-product-links a:hover {
  color: var(--color-accent);
  border-color: rgba(0, 102, 204, 0.28);
  background: var(--color-accent-glow);
}

/* ── Advantages ── */
.advantages {
  background: var(--color-text);
  color: #e8ecf2;
}

.advantages .section-header h2 {
  color: #fff;
}

.advantages .section-header p {
  color: #9aa5b8;
}

.advantages .section-tag {
  color: #60a5fa;
}

.adv-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.adv-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.adv-icon {
  flex-shrink: 0;
  width: clamp(2.5rem, 5vw, 3rem);
  height: clamp(2.5rem, 5vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  background: rgba(96, 165, 250, 0.12);
  color: #60a5fa;
  border-radius: var(--radius);
}

.adv-item h3 {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.35rem;
}

.adv-item p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: #9aa5b8;
}

/* ── Contact ── */
.contact {
  background: var(--color-surface);
}

.contact-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: clamp(2rem, 6vw, 4rem);
  align-items: start;
}

.contact-text h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.contact-text > p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.contact-info {
  font-style: normal;
  font-size: clamp(0.9rem, 1.5vw, 1rem);
}

.contact-info p {
  margin-bottom: 0.5rem;
}

.contact-info strong {
  display: inline-block;
  min-width: 3rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.contact-info a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-info a:hover {
  color: var(--color-accent);
}

.contact-wechat {
  margin-bottom: 0;
}

.wechat-trigger-wrap {
  display: inline-block;
}

.wechat-trigger {
  color: var(--color-accent);
  cursor: default;
  border-bottom: 1px dotted currentColor;
}

.contact-qr-card {
  position: relative;
  width: min(100%, 22rem);
  height: 22rem;
  flex-shrink: 0;
  align-self: center;
}

.contact-qr-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.contact-qr-card.is-active .contact-qr-content {
  opacity: 1;
  visibility: visible;
}

.contact-qr-content img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: calc(var(--radius) - 2px);
}

@media (max-width: 48rem) {
  .contact-qr-card {
    width: min(100%, 18rem);
    height: 18rem;
    margin-inline: auto;
  }
}

/* ── WeChat QR modal (product pages) ── */
.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 2rem);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.wechat-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.wechat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
}

.wechat-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 20rem);
  padding: clamp(1.25rem, 3vw, 1.5rem);
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.wechat-modal-dialog h2 {
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.wechat-modal-dialog p {
  font-size: clamp(0.82rem, 1.4vw, 0.9rem);
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.wechat-modal-dialog img {
  width: min(100%, 14rem);
  height: auto;
  margin-inline: auto;
  border-radius: calc(var(--radius) - 2px);
}

.wechat-modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.wechat-modal-close:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

/* ── Products page ── */
section.page-hero {
  padding-block: calc(var(--header-h) + clamp(2rem, 5vw, 3rem)) clamp(2.5rem, 6vw, 4rem);
}

.page-hero {
  position: relative;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #eef2f8 0%, #f8f9fb 60%, #e8edf5 100%);
  z-index: 0;
}

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

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw + 0.5rem, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: clamp(0.75rem, 2vw, 1rem);
}

.page-hero-desc {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: var(--color-text-muted);
  max-width: 42rem;
}

.product-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.product-nav-inner {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(0.5rem, 2vw, 1rem);
  padding-block: clamp(0.75rem, 2vw, 1rem);
}

.product-nav a {
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.product-nav a:hover {
  color: var(--color-accent);
  background: var(--color-accent-glow);
}

.product-detail {
  background: var(--color-surface);
  scroll-margin-top: calc(var(--header-h) + 3.5rem);
}

.product-detail-alt {
  background: var(--color-bg);
}

.product-detail-header {
  display: flex;
  gap: clamp(1rem, 3vw, 1.5rem);
  align-items: flex-start;
  margin-bottom: clamp(2rem, 5vw, 3rem);
  padding-bottom: clamp(1.5rem, 4vw, 2rem);
  border-bottom: 1px solid var(--color-border);
}

.product-detail-num {
  flex-shrink: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
  line-height: 1.2;
}

.product-detail-title h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.product-detail-lead {
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
  color: var(--color-text-muted);
  max-width: 48rem;
}

.product-detail-body {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: clamp(2rem, 5vw, 3rem);
  align-items: start;
}

.product-lines {
  display: flex;
  flex-direction: column;
  gap: clamp(0.75rem, 2vw, 1rem);
}

.product-line-card {
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.product-detail-alt .product-line-card {
  background: var(--color-surface);
}

.product-line-card:hover {
  border-color: rgba(0, 102, 204, 0.25);
  box-shadow: var(--shadow-sm);
}

.product-line-card h3 {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.product-line-card p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.product-line-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.product-line-tags li {
  font-size: clamp(0.7rem, 1.2vw, 0.8rem);
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  border-radius: 999px;
}

.product-detail-aside {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.product-detail-alt .product-detail-aside {
  background: var(--color-surface);
}

.aside-block + .aside-block {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--color-border);
}

.aside-block h3 {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.aside-list {
  list-style: none;
}

.aside-list li {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  padding-left: 1rem;
  position: relative;
  margin-bottom: 0.4rem;
}

.aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.spec-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
}

.spec-list dt {
  color: var(--color-text-muted);
  font-weight: 500;
}

.spec-list dd {
  font-weight: 600;
  text-align: right;
}

.product-page-cta {
  background: var(--color-text);
  color: #e8ecf2;
  padding-block: clamp(2rem, 4vw, 2.75rem);
}

button.btn {
  font-family: inherit;
  line-height: inherit;
  text-decoration: none;
  appearance: none;
}

.product-page-cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1.5rem, 4vw, 2rem);
}

.product-page-cta h2 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.product-page-cta p {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  color: #9aa5b8;
  max-width: 36rem;
}

.product-page-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.product-page-cta .btn-outline {
  color: #e8ecf2;
  border-color: rgba(255, 255, 255, 0.25);
}

.product-page-cta .btn-outline:hover {
  color: #fff;
  border-color: #fff;
}

.nav a[aria-current="page"] {
  color: var(--color-accent);
}

.product-card-link {
  display: block;
  color: inherit;
}

.product-card-link:hover {
  color: inherit;
  transform: translateY(-2px);
}

.product-card-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: clamp(0.8rem, 1.4vw, 0.875rem);
  font-weight: 600;
  color: var(--color-accent);
}

.product-card-link:hover .product-card-more {
  color: var(--color-accent-dark);
}

/* ── Single product page ── */
.product-single-hero {
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(1.5rem, 3.5vw, 2.25rem);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.product-single-hero-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
}

.product-single-intro h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.product-single-subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.product-single-lead {
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  max-width: 40rem;
}

.feature-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-tags li {
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  border-radius: 999px;
}

.product-single-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.product-single-figure {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

.product-single-figure img {
  max-height: clamp(12rem, 35vw, 18rem);
  width: auto;
  object-fit: contain;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-block: calc(var(--header-h) + 1rem) 0;
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb span:last-child {
  color: var(--color-text);
  font-weight: 500;
}

.product-single-section {
  padding-block: clamp(1rem, 2.5vw, 1.5rem);
  background: var(--color-surface);
}

.product-single-section + .product-single-section,
.product-single-section + .product-single-section-alt,
.product-single-section-alt + .product-single-section,
.product-single-section-alt + .product-single-section-alt {
  padding-top: clamp(0.5rem, 1.5vw, 0.75rem);
}

.product-single-hero + .product-single-section {
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
}

.product-single-section:has(+ .product-page-cta) {
  padding-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.product-single-section-alt {
  background: var(--color-bg);
}

.product-single-section-alt:has(.word-figure-gallery),
.product-single-section:has(.word-figure-gallery) {
  background: var(--color-surface);
}

.product-single-heading {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  margin-bottom: clamp(0.65rem, 1.8vw, 0.9rem);
}

.product-single-text {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.product-feature-list {
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.product-feature-list li {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  color: var(--color-text-muted);
  padding-left: 1.25rem;
  position: relative;
}

.product-feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.app-grid-compact {
  margin-top: 0;
}

.spec-group-title {
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 600;
  margin-top: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 0.5rem;
}

.spec-group-title:first-of-type {
  margin-top: 0;
}

.spec-group-note {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.product-single-section-alt .spec-table-wrap {
  background: var(--color-surface);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
}

.spec-table th,
.spec-table td {
  padding: clamp(0.6rem, 1.5vw, 0.85rem) clamp(0.75rem, 2vw, 1rem);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

.spec-table td:not(:first-child),
.spec-table th:not(:first-child) {
  text-align: center;
}

.spec-table td[colspan],
.spec-table th[colspan] {
  text-align: center;
}

.spec-table thead th {
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  font-weight: 600;
  white-space: nowrap;
}

.spec-table tbody tr:last-child td,
.spec-table tbody tr:last-child th {
  border-bottom: none;
}

.spec-table-simple th {
  width: 30%;
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
}

.spec-notes {
  margin-top: clamp(1.5rem, 4vw, 2rem);
  padding: clamp(1rem, 2.5vw, 1.25rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.product-single-section-alt .spec-notes {
  background: var(--color-surface);
}

.spec-notes h3 {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.spec-notes ul {
  list-style: none;
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
}

.product-figure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
}

.product-figure-grid figure {
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  text-align: center;
}

.product-figure-grid img {
  width: 100%;
  height: auto;
  object-fit: contain;
  margin-bottom: 0.75rem;
}

.product-figure-grid figcaption {
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  color: var(--color-text-muted);
}

.product-line-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.product-line-card-link:hover {
  color: inherit;
}

.product-line-more {
  font-size: clamp(0.8rem, 1.4vw, 0.875rem);
  font-weight: 600;
  color: var(--color-accent);
}

.product-line-card-link:hover .product-line-more {
  color: var(--color-accent-dark);
}

.product-datasheet-section {
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.product-datasheet-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.product-datasheet-header .product-single-heading {
  margin-bottom: 0;
}

.pdf-viewer-wrap {
  margin-top: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.pdf-viewer-wrap iframe {
  display: block;
  width: 100%;
  height: min(80vh, 56rem);
  border: 0;
}

/* ── Footer ── */
.site-footer {
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
  border-block-start: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.footer-brand strong {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
}

.footer-brand span {
  font-size: clamp(0.7rem, 1.2vw, 0.8rem);
  color: var(--color-text-muted);
}

.footer-copy {
  font-size: clamp(0.75rem, 1.2vw, 0.85rem);
  color: var(--color-text-muted);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
  text-align: right;
}

.footer-beian {
  margin: 0;
  font-size: clamp(0.7rem, 1.1vw, 0.8rem);
}

.footer-beian a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-beian a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ── Mobile nav ── */
@media (max-width: 48rem) {
  .nav-toggle {
    display: flex;
  }

  .footer-meta {
    align-items: flex-start;
    text-align: left;
  }

  .nav {
    position: fixed;
    inset-block-start: var(--header-h);
    inset-inline: 0;
    flex-direction: column;
    padding: 1.5rem clamp(1.25rem, 5vw, 3rem);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* ── Large screens ── */
@media (min-width: 75rem) {
  .hero h1 {
    max-width: none;
  }
}

/* ── Photodetector catalog ── */
.page-hero-compact {
  min-height: auto;
  padding-block: calc(var(--header-h) + clamp(1.5rem, 4vw, 2.5rem)) clamp(2rem, 5vw, 3rem);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  font-size: clamp(0.8rem, 1.4vw, 0.875rem);
  margin-bottom: clamp(1rem, 3vw, 1.5rem);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb span[aria-hidden="true"] {
  color: var(--color-border);
}

.breadcrumb-hero a,
.breadcrumb-hero span:not([aria-hidden="true"]) {
  color: rgba(26, 35, 50, 0.65);
}

.product-nav-sub {
  top: var(--header-h);
}

.product-nav-highlight {
  color: var(--color-accent) !important;
  font-weight: 600;
}

.product-nav-highlight::after {
  opacity: 1 !important;
  transform: scaleX(1) !important;
}

/* ── Detector selector tool ── */
.detector-selector {
  padding-block: clamp(2rem, 5vw, 3rem);
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.detector-selector-header {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.detector-selector-header h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  margin-block: 0.35rem 0.5rem;
}

.detector-selector-lead {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  color: var(--color-text-muted);
  max-width: 44rem;
}

.detector-selector-form {
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.detector-selector-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
  margin-bottom: clamp(0.75rem, 2vw, 1rem);
}

.detector-selector-field label {
  display: block;
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.detector-selector-field input,
.detector-selector-field select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) - 2px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.detector-selector-field input:focus,
.detector-selector-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.detector-selector-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.detector-selector-results-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
}

.detector-selector-hint {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
}

.detector-selector-count {
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  font-weight: 600;
  color: var(--color-accent);
}

.detector-selector-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.detector-selector-table {
  width: 100%;
  border-collapse: collapse;
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
}

.detector-selector-table th,
.detector-selector-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.detector-selector-table th {
  font-weight: 600;
  font-size: clamp(0.75rem, 1.3vw, 0.82rem);
  color: var(--color-text-muted);
  background: var(--color-bg);
}

.detector-selector-table tbody tr:last-child td {
  border-bottom: none;
}

.detector-selector-table tbody tr:hover {
  background: var(--color-accent-glow);
}

.detector-selector-model {
  font-weight: 600;
  color: var(--color-accent);
}

.detector-selector-type {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  font-size: 0.78em;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border-radius: 999px;
}

.detector-selector-action {
  text-align: right;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
}

.product-md-figure {
  margin: 0;
}

.product-md-figure img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius) - 2px);
}

.product-md-figure figcaption {
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.35rem;
}

.product-subcategory {
  padding-block: clamp(2.5rem, 6vw, 4rem);
  scroll-margin-top: calc(var(--header-h) + 3.5rem);
}

.product-subcategory:nth-child(even) {
  background: var(--color-bg);
}

.product-subcategory-header {
  display: flex;
  gap: clamp(1rem, 3vw, 1.5rem);
  align-items: flex-start;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  padding-bottom: clamp(1rem, 3vw, 1.5rem);
  border-bottom: 1px solid var(--color-border);
}

.product-subcategory-header h2 {
  font-size: clamp(1.25rem, 2.8vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-subcategory-lead {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  color: var(--color-text-muted);
  max-width: 42rem;
  margin-bottom: 0.35rem;
}

.product-subcategory-count {
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
  font-weight: 600;
  color: var(--color-accent);
}

.product-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
  gap: clamp(0.75rem, 2vw, 1.25rem);
}

.product-catalog-card {
  display: flex;
  flex-direction: column;
  padding: clamp(1rem, 2.5vw, 1.35rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease;
}

.product-subcategory:nth-child(even) .product-catalog-card {
  background: var(--color-surface);
}

.product-catalog-card:hover {
  border-color: rgba(0, 102, 204, 0.28);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-catalog-card h3 {
  font-size: clamp(0.9rem, 1.8vw, 1rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.product-catalog-card > p {
  flex: 1;
  font-size: clamp(0.82rem, 1.4vw, 0.9rem);
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.55;
}

.product-catalog-card .product-line-tags {
  margin-bottom: 1rem;
}

.product-catalog-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.product-catalog-link {
  font-size: clamp(0.8rem, 1.3vw, 0.875rem);
  font-weight: 600;
  color: var(--color-accent);
}

.product-catalog-link:hover {
  color: var(--color-accent-dark);
}

.product-catalog-dl {
  font-size: clamp(0.75rem, 1.2vw, 0.82rem);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: border-color var(--transition), color var(--transition);
}

.product-catalog-dl:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.product-catalog-nopdf {
  font-size: clamp(0.72rem, 1.2vw, 0.8rem);
  color: var(--color-text-muted);
  opacity: 0.75;
}

.detector-subcats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr));
  gap: clamp(0.65rem, 2vw, 1rem);
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.detector-subcat-link {
  display: block;
  padding: clamp(0.85rem, 2vw, 1.1rem) clamp(1rem, 2vw, 1.25rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.detector-subcat-link:hover {
  color: inherit;
  border-color: rgba(0, 102, 204, 0.3);
  box-shadow: var(--shadow-sm);
}

.detector-subcat-link strong {
  display: block;
  font-size: clamp(0.88rem, 1.6vw, 0.95rem);
  margin-bottom: 0.2rem;
}

.detector-subcat-link span {
  font-size: clamp(0.75rem, 1.2vw, 0.82rem);
  color: var(--color-text-muted);
}

.catalog-cta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  background: var(--color-accent-glow);
  border: 1px solid rgba(0, 102, 204, 0.15);
  border-radius: var(--radius);
  margin-bottom: clamp(1.5rem, 4vw, 2rem);
}

.catalog-cta-bar p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  margin: 0;
}

.catalog-cta-bar strong {
  color: var(--color-text);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
  }
}

/* Photodetector catalog */
.page-hero-compact { min-height: auto; padding-block: calc(var(--header-h) + clamp(1.5rem, 4vw, 2.5rem)) clamp(2rem, 5vw, 3rem); }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.5rem; font-size: clamp(0.8rem, 1.4vw, 0.875rem); margin-bottom: clamp(1rem, 3vw, 1.5rem); }
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span[aria-hidden="true"] { color: var(--color-border); }
.product-nav-sub { top: var(--header-h); }
.product-subcategory { padding-block: clamp(2.5rem, 6vw, 4rem); scroll-margin-top: calc(var(--header-h) + 3.5rem); }
.product-subcategory:nth-child(even) { background: var(--color-bg); }
.product-subcategory-header { display: flex; gap: clamp(1rem, 3vw, 1.5rem); align-items: flex-start; margin-bottom: clamp(1.5rem, 4vw, 2.5rem); padding-bottom: clamp(1rem, 3vw, 1.5rem); border-bottom: 1px solid var(--color-border); }
.product-subcategory-header h2 { font-size: clamp(1.25rem, 2.8vw, 1.6rem); font-weight: 700; margin-bottom: 0.5rem; }
.product-subcategory-lead { font-size: clamp(0.9rem, 1.6vw, 1rem); color: var(--color-text-muted); max-width: 42rem; margin-bottom: 0.35rem; }
.product-subcategory-count { font-size: clamp(0.75rem, 1.3vw, 0.85rem); font-weight: 600; color: var(--color-accent); }
.product-catalog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr)); gap: clamp(0.75rem, 2vw, 1.25rem); }
.product-catalog-card { display: flex; flex-direction: column; padding: clamp(1rem, 2.5vw, 1.35rem); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease; }
.product-catalog-card:hover { border-color: rgba(0, 102, 204, 0.28); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-catalog-card h3 { font-size: clamp(0.9rem, 1.8vw, 1rem); font-weight: 600; line-height: 1.35; margin-bottom: 0.5rem; }
.product-catalog-card > p { flex: 1; font-size: clamp(0.82rem, 1.4vw, 0.9rem); color: var(--color-text-muted); margin-bottom: 0.75rem; line-height: 1.55; }
.product-catalog-card .product-line-tags { margin-bottom: 1rem; }
.product-catalog-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.65rem 1rem; margin-top: auto; padding-top: 0.75rem; border-top: 1px solid var(--color-border); }
.product-catalog-link { font-size: clamp(0.8rem, 1.3vw, 0.875rem); font-weight: 600; color: var(--color-accent); }
.product-catalog-dl { font-size: clamp(0.75rem, 1.2vw, 0.82rem); font-weight: 500; color: var(--color-text-muted); padding: 0.25rem 0.65rem; border: 1px solid var(--color-border); border-radius: 999px; }
.product-catalog-dl:hover { color: var(--color-accent); border-color: var(--color-accent); }
.product-catalog-nopdf { font-size: clamp(0.72rem, 1.2vw, 0.8rem); color: var(--color-text-muted); opacity: 0.75; }
.detector-subcats { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr)); gap: clamp(0.65rem, 2vw, 1rem); margin-bottom: clamp(1.25rem, 3vw, 2rem); }
.detector-subcat-link { display: block; padding: clamp(0.85rem, 2vw, 1.1rem) clamp(1rem, 2vw, 1.25rem); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); color: inherit; }
.detector-subcat-link:hover { color: inherit; border-color: rgba(0, 102, 204, 0.3); box-shadow: var(--shadow-sm); }
.detector-subcat-link strong { display: block; font-size: clamp(0.88rem, 1.6vw, 0.95rem); margin-bottom: 0.2rem; }
.detector-subcat-link span { font-size: clamp(0.75rem, 1.2vw, 0.82rem); color: var(--color-text-muted); }
.catalog-cta-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: clamp(1rem, 3vw, 1.5rem); background: var(--color-accent-glow); border: 1px solid rgba(0, 102, 204, 0.15); border-radius: var(--radius); margin-bottom: clamp(1.5rem, 4vw, 2rem); }
.catalog-cta-bar p { font-size: clamp(0.85rem, 1.5vw, 0.95rem); color: var(--color-text-muted); margin: 0; }
.product-detail-body-full { grid-template-columns: 1fr; }

/* Product catalog pages — tighter vertical rhythm */
.page-products .product-detail {
  padding-block: clamp(1.75rem, 4vw, 2.5rem);
}

.page-products .product-detail-header {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
  padding-bottom: clamp(0.875rem, 2vw, 1.125rem);
}

.page-products .product-detail-body {
  gap: clamp(1.25rem, 3vw, 1.75rem);
}

.page-products .product-subcategory {
  padding-block: clamp(1.75rem, 4vw, 2.5rem);
}

.page-products .product-subcategory-header {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
  padding-bottom: clamp(0.875rem, 2vw, 1.125rem);
}

.page-products .detector-selector {
  padding-block: clamp(1.5rem, 4vw, 2.25rem);
}

.page-products .detector-selector-header {
  margin-bottom: clamp(1rem, 2.5vw, 1.375rem);
}

.page-products .product-single-section {
  padding-block: clamp(1.75rem, 4vw, 2.5rem);
}

.page-products .catalog-cta-bar {
  margin-bottom: clamp(1rem, 2.5vw, 1.375rem);
  padding: clamp(0.875rem, 2vw, 1.125rem);
}

.page-products .detector-subcats {
  margin-bottom: clamp(1rem, 2.5vw, 1.375rem);
}

.page-products .product-nav-inner {
  padding-block: clamp(0.5rem, 1.5vw, 0.75rem);
}

.product-single-hero-noimg .product-single-hero-inner { grid-template-columns: 1fr; }
.product-single-hero-noimg .product-single-intro { max-width: 48rem; }

.product-single-figure-placeholder {
  min-height: clamp(12rem, 35vw, 18rem);
}

.product-hero-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: clamp(12rem, 35vw, 18rem);
  background: linear-gradient(145deg, var(--color-bg) 0%, var(--color-accent-glow) 100%);
  border-radius: calc(var(--radius) - 2px);
}

.product-hero-placeholder-model {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.product-hero-placeholder-label {
  font-size: clamp(0.75rem, 1.3vw, 0.85rem);
  color: var(--color-text-muted);
}

.product-ext-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
}

.product-ext-card {
  padding: clamp(1rem, 2.5vw, 1.35rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.product-single-section-alt .product-ext-card {
  background: var(--color-surface);
}

.product-ext-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
  margin-bottom: 0.75rem;
  border-radius: calc(var(--radius) - 2px);
}

.product-ext-card h3 {
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.product-ext-card p {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
}

/* Word 网页导入 — 统一表格与图片 */
.word-content {
  font-size: clamp(0.875rem, 1.5vw, 0.95rem);
  line-height: 1.65;
  color: var(--color-text);
}

.word-content p {
  margin: 0 0 0.75rem;
}

.word-content p:last-child {
  margin-bottom: 0;
}

.word-content i,
.word-content .spec-remark {
  font-size: clamp(0.8rem, 1.4vw, 0.88rem);
  color: var(--color-text-muted);
  font-style: normal;
}

.word-content table {
  width: 100% !important;
  max-width: 100%;
  border-collapse: collapse;
  font-size: inherit;
  table-layout: auto;
  margin: 0 0 0.75rem;
}

.word-content table:last-child {
  margin-bottom: 0;
}

.word-content td,
.word-content th {
  padding: 0.65rem 0.85rem !important;
  border: 1px solid var(--color-border) !important;
  vertical-align: middle;
  text-align: left;
  width: auto !important;
  height: auto !important;
}

.word-content .spec-table td:not(:first-child),
.word-content .spec-table th:not(:first-child),
.word-content .spec-table td[colspan],
.word-content .spec-table th[colspan] {
  text-align: center !important;
}

.word-content .spec-table thead th,
.word-content .spec-table tr:first-child td,
.word-content .spec-table tr:first-child th {
  background: var(--color-accent-glow);
  font-weight: 600;
}

.word-content img {
  max-width: 100% !important;
  width: auto !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
}

.word-content.spec-table-wrap {
  --spec-label-col: 9rem;
  --spec-value-col: 5.75rem;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  padding: 0;
}

.word-content .spec-table-grid-5 {
  table-layout: fixed !important;
  width: 100% !important;
  min-width: calc(var(--spec-label-col) + 4 * var(--spec-value-col));
}

.word-content .spec-table-grid-5 col.spec-col-label {
  width: var(--spec-label-col);
}

.word-content .spec-table-grid-5 col.spec-col-value {
  width: var(--spec-value-col);
}

.word-content .spec-table-grid-5 td:first-child,
.word-content .spec-table-grid-5 th:first-child {
  width: var(--spec-label-col) !important;
}

.word-content .spec-table-grid-5 td.spec-col-empty {
  background: var(--color-bg) !important;
  color: transparent;
  user-select: none;
  font-weight: normal !important;
}

.word-content .spec-table-grid-5 tr:first-child td.spec-col-empty {
  background: var(--color-bg) !important;
}

.product-single-section-alt .word-content .spec-table-grid-5 td.spec-col-empty {
  background: var(--color-surface) !important;
}

.product-single-section-alt .word-content.spec-table-wrap {
  background: var(--color-surface);
}

.word-content.product-figure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
}

.word-content.word-figure-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(0.75rem, 2vw, 1.25rem);
}

.word-content.word-figure-gallery.word-figure-gallery-pair {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.word-content.word-figure-gallery > .spec-remark {
  grid-column: 1 / -1;
  margin: 0;
}

.word-figure {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  text-align: center;
}

.word-figure img {
  width: 100% !important;
  max-width: min(100%, 42rem) !important;
  height: auto !important;
  margin: 0 auto;
  display: block;
}

.word-figure-gallery-pair .word-figure img {
  max-width: 100% !important;
}

.word-figure figcaption {
  margin-top: 0.75rem;
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  font-weight: 500;
}

.word-content.product-figure-grid p {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  text-align: center;
}

.word-content.product-figure-grid img {
  margin-bottom: 0.75rem;
}

.word-content.product-figure-grid p b {
  display: block;
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (max-width: 640px) {
  .word-content td,
  .word-content th {
    padding: 0.5rem 0.65rem !important;
    font-size: 0.82rem;
  }
}