/* ===========================
   CSS Reset & Variables
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #0C447C;
  --primary-light: #185FA5;
  --primary-pale: #E6F1FB;
  --accent: #BA7517;
  --accent-light: #EF9F27;
  --accent-pale: #FAEEDA;
  --teal: #0F6E56;
  --teal-light: #1D9E75;
  --teal-pale: #E1F5EE;
  --coral: #993C1D;
  --coral-pale: #FAECE7;

  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #526173;
  --text-light: #a0aec0;

  --bg-white: #ffffff;
  --bg-light: #f8f9fb;
  --bg-dark: #0f1929;
  --bg-dark-2: #162236;

  --border-color: #e2e8f0;
  --border-dark: #2d3748;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

  --navbar-h: 68px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 15px;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ===========================
   Layout
   =========================== */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 90px 0;
}

.section.bg-light {
  background: var(--bg-light);
}

.center {
  text-align: center;
}

.mt-3 {
  margin-top: 3rem;
}

/* ===========================
   Navbar
   =========================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: var(--navbar-h);
  gap: 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: auto;
  display: block;
}

/* 滚动后导航栏深色背景时的 logo 适配 - 原logo是深灰色，滚动后背景变白，无需滤镜 */

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-item {
  padding: 8px 16px;
  font-size: 14.5px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-weight: 500;
}

.nav-item:hover {
  color: var(--primary);
  background: var(--primary-pale);
}

.nav-item.active {
  color: var(--primary);
  font-weight: 600;
}

/* Language Switch */
.lang-switch-select {
  appearance: none;
  -webkit-appearance: none;
  width: 82px;
  height: 30px;
  padding: 0 24px 0 12px;
  margin-left: 10px;
  margin-right: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--primary);
  background-color: #f7fbff;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 4.5 6 7.5 9 4.5' fill='none' stroke='%230C447C' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 12px;
  border: 1px solid rgba(12, 68, 124, 0.22);
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
  font-family: inherit;
  line-height: 30px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.lang-switch-select:hover {
  background-color: #fff;
  border-color: rgba(12, 68, 124, 0.45);
  box-shadow: 0 3px 10px rgba(12, 68, 124, 0.08);
}

.lang-switch-select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(24, 95, 165, 0.14);
}

.mobile-menu .lang-switch-select {
  align-self: flex-start;
  margin: 4px 24px 8px;
  width: 88px;
}

/* Hamburger */
.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: white;
  border-top: 1px solid var(--border-color);
  padding: 12px 0;
}

.mobile-menu.open {
  display: flex;
}

.mobile-item {
  padding: 12px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition);
}

.mobile-item:hover,
.mobile-item.active {
  color: var(--primary);
  background: var(--primary-pale);
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(12,68,124,0.25);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-1px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
  font-weight: 500;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--navbar-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 12, 24, 0.88) 0%, rgba(5, 17, 33, 0.76) 34%, rgba(5, 17, 33, 0.34) 62%, rgba(5, 17, 33, 0.04) 100%),
    url("images/home-hero-industrial-clean-port-bright.jpg");
  background:
    linear-gradient(90deg, rgba(4, 12, 24, 0.88) 0%, rgba(5, 17, 33, 0.76) 34%, rgba(5, 17, 33, 0.34) 62%, rgba(5, 17, 33, 0.04) 100%),
    image-set(url("images/home-hero-industrial-clean-port-bright.webp") type("image/webp"), url("images/home-hero-industrial-clean-port-bright.jpg") type("image/jpeg"));
  background-position: center;
  background-size: cover;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 24% 52%, rgba(24,95,165,0.1) 0%, transparent 46%),
    linear-gradient(90deg, rgba(2,9,18,0.24) 0%, transparent 52%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5,13,24,0.02) 0%, rgba(5,13,24,0.18) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 60px 24px;
  max-width: 640px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(239,159,39,0.15);
  border: 1px solid rgba(239,159,39,0.4);
  border-radius: 100px;
  color: #EF9F27;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 800;
  color: white;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: 0;
}

.hero-title .accent {
  color: #EF9F27;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.84);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 40px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.42);
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero .btn-outline {
  color: white;
  border-color: rgba(255,255,255,0.5);
}

.hero .btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  letter-spacing: 0.1em;
  z-index: 1;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255,255,255,0.3);
  border-bottom: 2px solid rgba(255,255,255,0.3);
  transform: rotate(45deg);
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-pale);
  color: var(--primary-light);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0;
}

.section-title-left {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 0;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===========================
   Features Grid
   =========================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
}

.icon-blue { background: var(--primary-pale); color: var(--primary); }
.icon-amber { background: var(--accent-pale); color: var(--accent); }
.icon-teal { background: var(--teal-pale); color: var(--teal); }
.icon-coral { background: var(--coral-pale); color: var(--coral); }

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===========================
   Products Preview
   =========================== */
.products-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.lighting-bg {
  background: linear-gradient(135deg, #0C447C 0%, #185FA5 100%);
}

.signal-bg {
  background: linear-gradient(135deg, #0F6E56 0%, #1D9E75 100%);
}

.product-img-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-img-overlay svg {
  width: 100px;
  height: 100px;
}

.product-info {
  padding: 28px;
}

.product-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 100px;
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 12px;
}

.product-tag.signal {
  background: var(--teal-pale);
  color: var(--teal);
}

.product-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.product-info p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.link-arrow {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--transition);
}

.link-arrow:hover {
  text-decoration: underline;
}

/* ===========================
   Stats
   =========================== */
.stats-section {
  background: var(--bg-dark);
  padding: 70px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 40px 20px;
  border-right: 1px solid var(--border-dark);
  position: relative;
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 56px;
  font-weight: 800;
  color: white;
  line-height: 1;
  display: inline-block;
}

.stat-unit {
  font-size: 28px;
  font-weight: 700;
  color: #EF9F27;
  display: inline-block;
  margin-left: 2px;
  vertical-align: top;
  margin-top: 10px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-top: 10px;
  letter-spacing: 0.02em;
}

/* ===========================
   Scenarios
   =========================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.scenario-item {
  background: white;
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  cursor: default;
}

.scenario-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.scenario-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.scenario-item span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ===========================
   CTA
   =========================== */
.contact-cta {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.38) 0%, rgba(8, 22, 39, 0.24) 48%, rgba(5, 13, 24, 0.38) 100%),
    url("images/cta-industrial-strip.jpg");
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.38) 0%, rgba(8, 22, 39, 0.24) 48%, rgba(5, 13, 24, 0.38) 100%),
    image-set(url("images/cta-industrial-strip.webp") type("image/webp"), url("images/cta-industrial-strip.jpg") type("image/jpeg"));
  background-position: center;
  background-size: cover;
}

.cta-content {
  text-align: center;
  padding: 20px 0;
}

.cta-content h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 36px;
}

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.8);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding: 64px 24px 48px;
}

.footer-logo {
  margin-bottom: 16px;
}

.footer-logo-img {
  height: 36px;
  width: auto;
  display: block;
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
}

.footer-links h2,
.footer-links h4,
.footer-contact h2,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 700;
  color: white;
  margin-bottom: 18px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.4;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  padding: 5px 0;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
}

.footer-contact a {
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}

.footer-contact a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.72);
}

.public-security-record {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: inherit;
  text-decoration: none;
  vertical-align: middle;
  white-space: nowrap;
}

.public-security-record img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex: 0 0 18px;
}

.public-security-record:hover {
  color: rgba(255,255,255,0.72);
}

/* ===========================
   Page Hero
   =========================== */
.page-hero {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  margin-top: var(--navbar-h);
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
}

.about-hero-bg {
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    url("images/page-hero-industrial-bright-solutions.jpg");
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    image-set(url("images/page-hero-industrial-bright-solutions.webp") type("image/webp"), url("images/page-hero-industrial-bright-solutions.jpg") type("image/jpeg"));
  background-position: center;
  background-size: cover;
}

.products-hero-bg {
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    url("images/page-hero-industrial-bright-solutions.jpg");
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    image-set(url("images/page-hero-industrial-bright-solutions.webp") type("image/webp"), url("images/page-hero-industrial-bright-solutions.jpg") type("image/jpeg"));
  background-position: center;
  background-size: cover;
}

.contact-hero-bg {
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    url("images/page-hero-industrial-bright-solutions.jpg");
  background:
    linear-gradient(90deg, rgba(5, 13, 24, 0.72) 0%, rgba(8, 22, 39, 0.48) 48%, rgba(8, 22, 39, 0.18) 100%),
    image-set(url("images/page-hero-industrial-bright-solutions.webp") type("image/webp"), url("images/page-hero-industrial-bright-solutions.jpg") type("image/jpeg"));
  background-position: center;
  background-size: cover;
}

.product-hero-engineering,
.product-hero-port,
.product-hero-industrial,
.product-hero-aviation,
.product-hero-wind {
  background-position: center;
  background-size: cover;
}

.product-hero-engineering {
  background-image:
    linear-gradient(90deg, rgba(6, 17, 31, 0.72) 0%, rgba(6, 17, 31, 0.42) 45%, rgba(6, 17, 31, 0.16) 100%),
    url("images/hero-engineering.jpg");
  background-image:
    linear-gradient(90deg, rgba(6, 17, 31, 0.72) 0%, rgba(6, 17, 31, 0.42) 45%, rgba(6, 17, 31, 0.16) 100%),
    image-set(url("images/hero-engineering.webp") type("image/webp"), url("images/hero-engineering.jpg") type("image/jpeg"));
}

.product-hero-port {
  background-image:
    linear-gradient(90deg, rgba(4, 22, 27, 0.72) 0%, rgba(4, 37, 44, 0.42) 45%, rgba(4, 37, 44, 0.16) 100%),
    url("images/hero-port.jpg");
  background-image:
    linear-gradient(90deg, rgba(4, 22, 27, 0.72) 0%, rgba(4, 37, 44, 0.42) 45%, rgba(4, 37, 44, 0.16) 100%),
    image-set(url("images/hero-port.webp") type("image/webp"), url("images/hero-port.jpg") type("image/jpeg"));
}

.product-hero-industrial {
  background-image:
    linear-gradient(90deg, rgba(18, 14, 10, 0.72) 0%, rgba(36, 28, 18, 0.42) 45%, rgba(36, 28, 18, 0.16) 100%),
    url("images/hero-industrial-warning.jpg");
  background-image:
    linear-gradient(90deg, rgba(18, 14, 10, 0.72) 0%, rgba(36, 28, 18, 0.42) 45%, rgba(36, 28, 18, 0.16) 100%),
    image-set(url("images/hero-industrial-warning.webp") type("image/webp"), url("images/hero-industrial-warning.jpg") type("image/jpeg"));
}

.product-hero-aviation {
  background-image:
    linear-gradient(90deg, rgba(7, 14, 32, 0.72) 0%, rgba(15, 25, 53, 0.42) 45%, rgba(15, 25, 53, 0.16) 100%),
    url("images/hero-aviation.jpg");
  background-image:
    linear-gradient(90deg, rgba(7, 14, 32, 0.72) 0%, rgba(15, 25, 53, 0.42) 45%, rgba(15, 25, 53, 0.16) 100%),
    image-set(url("images/hero-aviation.webp") type("image/webp"), url("images/hero-aviation.jpg") type("image/jpeg"));
}

.product-hero-wind {
  background-image:
    linear-gradient(90deg, rgba(8, 18, 28, 0.72) 0%, rgba(13, 39, 54, 0.42) 45%, rgba(13, 39, 54, 0.16) 100%),
    url("images/hero-wind-monitoring-v7.jpg");
  background-image:
    linear-gradient(90deg, rgba(8, 18, 28, 0.72) 0%, rgba(13, 39, 54, 0.42) 45%, rgba(13, 39, 54, 0.16) 100%),
    image-set(url("images/hero-wind-monitoring-v7.webp") type("image/webp"), url("images/hero-wind-monitoring-v7.jpg") type("image/jpeg"));
}

.page-hero-bg::after {
  content: none;
}

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

.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: white;
}

.page-hero-content h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
  letter-spacing: 0;
}

.page-hero-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.6);
}

/* ===========================
   About Page
   =========================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.body-text {
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img-placeholder {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  margin-bottom: 40px;
  align-items: start;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--primary-pale);
}

.timeline-year {
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  padding-top: 4px;
}

.timeline-content h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
}

.value-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.value-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary-pale);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: 0;
}

.value-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.value-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.cert-item {
  background: white;
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.cert-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.cert-icon {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius-md);
  color: var(--primary);
  background: var(--primary-pale);
}

.cert-item span {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-secondary);
  display: block;
  line-height: 1.5;
}

/* ===========================
   Products Page
   =========================== */
.product-nav-section {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-color);
  padding: 0;
}

.product-nav {
  display: flex;
  gap: 4px;
  padding: 16px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.product-nav::-webkit-scrollbar { display: none; }

.product-nav-btn {
  padding: 9px 22px;
  border-radius: 100px;
  border: 1.5px solid var(--border-color);
  background: white;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.product-nav-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.product-nav-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ===========================
   Products Page - Catalog Layout
   =========================== */
.product-catalog-section {
  padding: 60px 0 90px;
}

.product-catalog-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

/* Sidebar */
.product-sidebar {
  position: sticky;
  top: calc(var(--navbar-h) + 32px);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.sidebar-title {
  padding: 20px 24px 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 0 12px 16px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: pointer;
  user-select: none;
}

.sidebar-link:hover {
  background: var(--bg-light);
  color: var(--primary);
}

.sidebar-link.active {
  background: var(--primary-pale);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-count {
  margin-left: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  background: var(--bg-light);
  padding: 2px 8px;
  border-radius: 100px;
  flex-shrink: 0;
}

.sidebar-link.active .sidebar-count {
  background: white;
  color: var(--primary);
}

.sidebar-contact {
  border-top: 1px solid var(--border-color);
  padding: 20px 24px;
}

.sidebar-contact-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.sidebar-contact .btn {
  width: 100%;
  justify-content: center;
}

/* Product Main Area */
.product-main-header {
  margin-bottom: 32px;
}

.product-main-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 8px;
}

.product-thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.product-thumb-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.product-thumb-card.hidden-card {
  display: none !important;
}

.product-thumb-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.category-label {
  grid-column: 1 / -1;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  padding: 16px 0 0 0;
  margin-top: 8px;
  border-top: 1px solid var(--border-color);
}

.category-label:first-child {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

/* Industry Overview Cards */
.industry-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  margin-bottom: 40px;
}

.industry-overview-card {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background: white;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
}

.industry-overview-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.industry-overview-icon {
  font-size: 48px;
  line-height: 1;
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
}

.industry-overview-body {
  flex: 1;
  min-width: 0;
}

.industry-overview-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px 0;
}

.industry-overview-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 16px 0;
  line-height: 1.5;
}

.industry-overview-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.overview-line {
  display: grid;
  grid-template-columns: minmax(130px, 38%) minmax(0, 1fr);
  align-items: start;
  gap: 12px;
  font-size: 13.5px;
  line-height: 1.5;
  padding: 4px 0;
  border-bottom: 1px dashed var(--border-color);
}

.overview-line:last-child {
  border-bottom: none;
}

.overview-line strong {
  color: var(--primary);
  font-weight: 600;
  min-width: 0;
  overflow-wrap: anywhere;
}

.overview-line span {
  color: var(--text-secondary);
  font-size: 12.5px;
  min-width: 0;
  overflow-wrap: anywhere;
}

/* Sidebar subcat link */
.sidebar-link.subcat-link {
  font-size: 13.5px;
  padding-left: 24px;
}

.product-thumb-img {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  overflow: hidden;
}

.product-thumb-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: transform 0.3s ease;
}

.product-thumb-card:hover .product-thumb-img img {
  transform: scale(1.05);
}

.product-thumb-img svg {
  width: 64px;
  height: 64px;
  transition: transform 0.3s ease;
}

.product-thumb-card:hover .product-thumb-img svg {
  transform: scale(1.1);
}

.product-thumb-info {
  padding: 16px 20px 20px;
}

.product-thumb-tag {
  display: inline-block;
  padding: 2px 10px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  font-family: 'Consolas', 'Monaco', monospace;
}

.product-thumb-tag.highlight {
  background: var(--accent-pale);
  color: var(--accent);
}

.product-thumb-tag.solar {
  background: var(--teal-pale);
  color: var(--teal);
}

.product-thumb-info h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.product-thumb-info p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Product Detail Cards */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
}

.product-detail-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.product-detail-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-detail-header {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lighting-card { background: linear-gradient(135deg, #0C447C, #185FA5); }
.lighting-card-2 { background: linear-gradient(135deg, #185FA5, #378ADD); }
.lighting-card-3 { background: linear-gradient(135deg, #0C447C, #042C53); }
.lighting-card-4 { background: linear-gradient(135deg, #042C53, #0C447C); }

.signal-card { background: linear-gradient(135deg, #A32D2D, #E24B4A); }
.signal-card-2 { background: linear-gradient(135deg, #BA7517, #EF9F27); }
.signal-card-3 { background: linear-gradient(135deg, #0F6E56, #1D9E75); }
.signal-card-4 { background: linear-gradient(135deg, #3B6D11, #639922); }

.product-icon-large svg {
  width: 70px;
  height: 70px;
}

.product-detail-body {
  padding: 24px;
}

.product-detail-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.product-model-tag {
  display: inline-block;
  padding: 2px 10px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  font-family: 'Consolas', 'Monaco', monospace;
}

.product-model-tag.highlight {
  background: var(--accent-pale);
  color: var(--accent);
}

.product-model-tag.solar {
  background: var(--teal-pale);
  color: var(--teal);
}

.product-desc-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.product-specs {
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
}

.spec-key {
  color: var(--text-muted);
  min-width: 70px;
}

.spec-val {
  font-weight: 600;
  color: var(--text-primary);
}

/* ===========================
   Product Detail Page
   =========================== */
.product-detail-page {
  padding: 48px 0 90px;
}

.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.product-detail-visual {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.product-detail-visual-img {
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafbfc;
}

.product-detail-visual-img svg {
  width: 140px;
  height: 140px;
}

.product-detail-visual-badge {
  padding: 20px 28px;
  border-top: 1px solid var(--border-color);
}

.product-detail-visual-badge h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.product-detail-visual-badge .product-model-tag {
  font-size: 14px;
  padding: 3px 14px;
  margin-bottom: 0;
}

.product-detail-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

.product-detail-dimension {
  border-top: 1px solid var(--border-color);
  padding: 16px 20px;
}

.dimension-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.product-detail-dimension img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

.product-detail-content {
  padding: 0;
}

.product-detail-content .breadcrumb {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 14px;
}

.product-detail-content .breadcrumb a {
  color: var(--primary);
}

.product-detail-content .breadcrumb a:hover {
  text-decoration: underline;
}

.product-detail-description {
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 32px;
}

.product-detail-desc-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-pale);
}

/* Spec Table on Detail Page */
.product-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 32px;
}

.product-spec-table tr:nth-child(even) {
  background: var(--bg-light);
}

.product-spec-table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border-color);
}

.product-spec-table td:first-child {
  color: var(--text-muted);
  font-weight: 500;
  width: 120px;
}

.product-spec-table td:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

.product-detail-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
}

/* Responsive - Product Catalog */
@media (max-width: 1024px) {
  .product-catalog-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-sidebar {
    position: static;
  }

  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0 12px 12px;
    gap: 6px;
  }

  .sidebar-link {
    padding: 8px 14px;
    font-size: 13.5px;
    border-radius: 100px;
    border: 1.5px solid var(--border-color);
    background: white;
    gap: 6px;
  }

  .sidebar-link:hover {
    background: var(--bg-light);
    border-color: var(--primary);
  }

  .sidebar-link.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
  }

  .sidebar-link.active .sidebar-count {
    background: rgba(255,255,255,0.2);
    color: white;
  }

  .sidebar-contact {
    border-top: none;
    padding-top: 4px;
  }

  .industry-overview {
    grid-template-columns: 1fr;
  }

  .industry-overview-card {
    flex-direction: column;
    padding: 24px;
    gap: 16px;
  }

  .industry-overview-icon {
    width: 56px;
    height: 56px;
    font-size: 36px;
  }

  .product-detail-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .product-thumb-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
  }

  .product-thumb-img {
    height: 110px;
  }

  .product-thumb-img svg {
    width: 48px;
    height: 48px;
  }

  .product-thumb-info {
    padding: 12px 14px 16px;
  }

  .product-thumb-info h3 {
    font-size: 13.5px;
  }

  .product-thumb-info p {
    font-size: 12px;
  }

  .product-detail-visual-img {
    height: 240px;
  }
}

.solution-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.solution-icon {
  font-size: 40px;
  margin-bottom: 18px;
}

.solution-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.solution-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
}

.solution-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--teal-light);
  font-weight: 700;
}

/* Service Steps */
.service-steps {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}

.step-item {
  flex: 1;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 36px 24px;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.step-arrow {
  display: flex;
  align-items: center;
  font-size: 24px;
  color: var(--border-color);
  padding: 0 8px;
}

.step-num {
  width: 52px;
  height: 52px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 16px;
}

.step-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===========================
   Contact Page
   =========================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info-panel h2,
.contact-form-panel h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.contact-intro {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 36px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 22px;
  height: 22px;
}

.addr-icon { background: var(--primary-pale); color: var(--primary); }
.phone-icon { background: var(--teal-pale); color: var(--teal); }
.email-icon { background: var(--accent-pale); color: var(--accent); }
.fax-icon { background: #F1EFE8; color: #5F5E5A; }

.contact-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 14.5px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-note {
  font-size: 13px;
  color: var(--text-light);
}

.business-hours h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.hours-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hours-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.hours-day { color: var(--text-secondary); font-weight: 500; }
.hours-time { color: var(--primary); font-weight: 600; }

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.required {
  color: #E24B4A;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--text-primary);
  background: white;
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(12,68,124,0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-light);
}

/* Map */
.map-placeholder {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
}

.map-inner svg {
  width: 100%;
  height: auto;
  display: block;
}

.map-overlay-btn {
  position: absolute;
  bottom: 20px;
  right: 20px;
}

/* FAQ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: inherit;
  text-align: left;
  gap: 16px;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle {
  font-size: 22px;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  line-height: 1;
}

.faq-item.open .faq-toggle {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 24px 18px;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* Form Success */
.form-success {
  text-align: center;
  padding: 60px 20px;
}

.success-icon {
  width: 72px;
  height: 72px;
  background: var(--teal-pale);
  color: var(--teal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 24px;
}

.form-success h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.form-success p {
  font-size: 15px;
  color: var(--text-muted);
}

/* Form Error */
.form-error {
  text-align: center;
  padding: 40px 20px;
}

.error-icon {
  width: 72px;
  height: 72px;
  background: #fee2e2;
  color: #dc2626;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 24px;
}

.form-error h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.form-error p {
  font-size: 15px;
  color: var(--text-muted);
}

/* ===========================
   Animations
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nav-links { display: none; }
  .menu-btn { display: flex; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .nav-links { display: none; }
  .menu-btn { display: flex; }

  .lang-switch-select {
    width: 82px;
    height: 30px;
    padding: 0 24px 0 11px;
    font-size: 12px;
  }

  .hero-title { font-size: 38px; }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-top: 1px solid var(--border-dark); }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 24px 32px;
  }

  .service-steps {
    flex-direction: column;
  }

  .step-arrow { display: none; }

  .form-row { grid-template-columns: 1fr; }

  .timeline {
    padding-left: 24px;
  }

  .timeline-item {
    grid-template-columns: 70px 1fr;
    gap: 16px;
  }
}

/* ===========================
   Product Detail - Image Gallery
   =========================== */
.product-gallery-section {
  padding: 60px 0;
  background: var(--bg-light);
}

.product-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.product-gallery-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition);
}

.product-gallery-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-gallery-card-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-gallery-card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.gallery-icon {
  font-size: 20px;
}

.product-gallery-card-body {
  padding: 24px;
}

.product-gallery-card-body img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}

.product-full-manual {
  margin-top: 48px;
}

.product-full-manual-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.product-full-manual-header h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
}

.manual-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

.manual-page-img {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* Product detail image area replacement */
.product-detail-visual-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; gap: 12px; }

  .scenarios-grid { grid-template-columns: repeat(4, 1fr); }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stat-item {
    border-right: none;
  }

  .stat-item:nth-child(odd) {
    border-right: 1px solid var(--border-dark);
  }

  .product-gallery-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* Product detail title keeps its original visual rhythm as an H2. */
h2.pd-title { margin-top: 0; }

/* ===========================
   Performance and inquiry enhancements
   =========================== */
.product-thumb-card,
.industry-overview-card,
.solution-card,
.feature-card {
  contain-intrinsic-size: 260px;
}

.mobile-inquiry-bar {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 1200;
  display: none;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 8px;
  background: rgba(10, 24, 42, 0.94);
  box-shadow: 0 12px 36px rgba(0,0,0,0.22);
}

.mobile-inquiry-bar a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.mobile-inquiry-action {
  color: #d9e8f8;
  background: rgba(255,255,255,0.08);
}

.mobile-inquiry-primary {
  color: #fff;
  background: var(--primary);
}

.pd-badge.badge-amber {
  color: #8a4d00 !important;
  background: #fff1d2 !important;
  border-color: #d6a54d !important;
}

@media (max-width: 768px) {
  body {
    padding-bottom: 74px;
  }

  .mobile-inquiry-bar {
    display: grid;
  }

  .pd-actions .btn,
  .sidebar-contact .btn {
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}