/* ========== 贤霖科技 网站样式 ========== */

/* --- Reset & Base --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #7dd3fc;
  --accent: #38bdf8;
  --accent-dark: #0369a1;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --radius: 12px;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14,165,233,0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-dark);
  border: 2px solid rgba(2,132,199,0.45);
}

.btn-secondary:hover {
  background: rgba(14,165,233,0.12);
  border-color: var(--primary);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary-light);
}

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

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--gray-200);
}

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

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 20px;
}

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

.logo-text .en {
  font-size: 11px;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 1px;
}

.nav-logo-img {
  height: 40px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
  transition: color 0.2s;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--primary-dark);
}

.mobile-toggle {
  display: none;
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 520px;
  max-height: 560px;
  background: #bae6fd url('../images/hero-banner.jpg?v=4') center/cover no-repeat;
  display: flex;
  align-items: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.90) 0%, rgba(186,230,253,0.70) 30%, rgba(186,230,253,0.35) 55%, rgba(186,230,253,0.0) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.45) 0%, rgba(186,230,253,0.0) 60%);
}

.hero-bg-pattern {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 48px 0;
  width: 100%;
}

.hero-content .container {
  position: relative;
  z-index: 3;
  padding: 0 24px;
  max-width: 820px;
  margin-left: 0;
  margin-right: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(2,132,199,0.35);
  padding: 6px 16px;
  border-radius: 50px;
  color: #075985;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  color: #075985;
  line-height: 1.25;
  margin-bottom: 18px;
  max-width: 640px;
  text-shadow: 0 2px 16px rgba(255,255,255,0.85);
}

.hero h1 .highlight {
  color: var(--primary-dark);
  text-shadow: 0 2px 16px rgba(255,255,255,0.85);
}

.hero-subtitle {
  font-size: 17px;
  color: #0369a1;
  max-width: 560px;
  margin-bottom: 28px;
  line-height: 1.75;
  text-shadow: 0 1px 10px rgba(255,255,255,0.85);
}

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

.hero-actions .btn-secondary {
  border-color: rgba(2,132,199,0.5);
}

.hero-actions .btn-secondary:hover {
  border-color: var(--primary);
}

.hero-stats {
  display: flex;
  gap: 44px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.hero-stat-item {
  text-align: left;
}

.hero-stat-item .num {
  font-size: 36px;
  font-weight: 800;
  color: #075985;
  text-shadow: 0 2px 10px rgba(255,255,255,0.85);
}

.hero-stat-item .num .plus {
  color: var(--primary);
}

.hero-stat-item .label {
  font-size: 14px;
  color: #0369a1;
  margin-top: 4px;
  text-shadow: 0 1px 6px rgba(255,255,255,0.85);
}

/* --- Section General --- */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  background: rgba(14,165,233,0.12);
  color: var(--primary-dark);
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* --- About Preview Section --- */
.about-preview {
  background: var(--gray-50);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.about-text p {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}

.about-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-highlight-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(14,165,233,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.about-highlight-item .text h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 4px;
}

.about-highlight-item .text p {
  font-size: 13px;
  color: var(--gray-500);
  margin: 0;
}

.about-image-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 48px;
  color: var(--gray-900);
  position: relative;
  overflow: hidden;
}

.about-image-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: rgba(14,165,233,0.06);
  border-radius: 50%;
}

.about-image-card .tagline {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.about-image-card h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-image-card .desc {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 32px;
}

.about-image-card .stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.about-image-card .stat .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
}

.about-image-card .stat .num .plus {
  color: var(--accent);
}

.about-image-card .stat .label {
  font-size: 13px;
  color: var(--gray-500);
}

/* --- Business Sections --- */
.business {
  background: var(--white);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.business-card {
  background-color: var(--white);
  background-repeat: no-repeat;
  background-position: right -20px center;
  background-size: 260px auto;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 36px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.business-card-network {
  background-image: url('../images/business/network.svg');
}

.business-card-idc {
  background-image: url('../images/business/idc.svg');
}

.business-card-cabling {
  background-image: url('../images/business/cabling.svg');
}

.business-card-integration {
  background-image: url('../images/business/integration.svg');
}

.business-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-light);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.3s;
}

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

.business-card:hover::before {
  transform: scaleY(1);
}

.business-card .num {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 48px;
  font-weight: 900;
  color: var(--gray-100);
  z-index: 0;
}

.business-card .icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.business-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.business-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.business-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

.business-card .tag {
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 500;
}

/* --- Brands Section --- */
.brands {
  background: var(--gray-50);
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}

.brand-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

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

.brand-card .brand-logo {
  width: 76px;
  height: 76px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  overflow: hidden;
  padding: 6px;
}

.brand-card .brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.brand-card .brand-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-800);
}

.brand-card .brand-cat {
  font-size: 13px;
  color: var(--gray-500);
}

/* --- Advantages Section --- */
.advantages {
  background: var(--white);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.adv-card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--gray-50);
  transition: all 0.3s;
  border: 1px solid transparent;
}

.adv-card:hover {
  background: var(--white);
  border-color: var(--gray-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.adv-card .icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.adv-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
}

/* --- CTA Section --- */
.cta-section {
  background: #fff;
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 30% 50%, rgba(14,165,233,0.05) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(249,115,22,0.05) 0%, transparent 50%);
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 16px;
  color: var(--gray-600);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  background: #fff;
  color: var(--gray-700);
  padding: 60px 0 24px;
  border-top: 1px solid var(--gray-200);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: var(--gray-900);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--gray-500);
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--gray-200);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--gray-600);
}

/* --- Products Page --- */
.page-hero {
  background: #fff;
  padding: 140px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 30% 50%, rgba(14,165,233,0.05) 0%, transparent 50%);
}

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

.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 16px;
  color: var(--gray-600);
}

.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--gray-500);
}

.breadcrumb a {
  color: var(--gray-600);
}

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

/* Products Page Hero (with banner image) */
.page-hero-products {
  background: #bae6fd url('../images/products-banner.jpg?v=4') center/cover no-repeat;
  min-height: 360px;
  padding: 90px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero-products::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.86) 0%, rgba(186,230,253,0.62) 45%, rgba(186,230,253,0.28) 80%, rgba(186,230,253,0.06) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.35) 0%, rgba(186,230,253,0.0) 55%);
}

.page-hero-products h1 {
  color: #075985;
  text-shadow: 0 2px 12px rgba(255,255,255,0.9);
}

.page-hero-products p {
  color: #0369a1;
  text-shadow: 0 1px 6px rgba(255,255,255,0.9);
}

.page-hero-products .breadcrumb {
  color: rgba(3,105,161,0.8);
}

.page-hero-products .breadcrumb a {
  color: #0369a1;
}

.page-hero-products .breadcrumb a:hover {
  color: var(--primary-dark);
}

/* Solutions Page Hero (with banner image) */
.page-hero-solutions {
  background: #bae6fd url('../images/solutions-banner.jpg?v=4') center/cover no-repeat;
  background-position: right center;
  min-height: 360px;
  padding: 90px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero-solutions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.84) 0%, rgba(186,230,253,0.60) 50%, rgba(186,230,253,0.30) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.32) 0%, rgba(186,230,253,0.0) 60%);
}

.page-hero-solutions h1,
.page-hero-solutions p,
.page-hero-solutions .breadcrumb,
.page-hero-solutions .breadcrumb a {
  position: relative;
  z-index: 1;
}

.page-hero-solutions h1 {
  color: #075985;
  text-shadow: 0 2px 12px rgba(255,255,255,0.9);
}

.page-hero-solutions p {
  color: #0369a1;
  text-shadow: 0 1px 6px rgba(255,255,255,0.9);
}

.page-hero-solutions .breadcrumb {
  color: rgba(3,105,161,0.8);
}

.page-hero-solutions .breadcrumb a {
  color: #0369a1;
}

.page-hero-solutions .breadcrumb a:hover {
  color: var(--primary-dark);
}

/* News Page Hero (with banner image) */
.page-hero-news {
  background: #bae6fd url('../images/news-banner.jpg?v=2') center/cover no-repeat;
  min-height: 360px;
  padding: 90px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero-news::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.84) 0%, rgba(186,230,253,0.60) 50%, rgba(186,230,253,0.30) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.32) 0%, rgba(186,230,253,0.0) 60%);
}

.page-hero-news h1,
.page-hero-news p,
.page-hero-news .breadcrumb,
.page-hero-news .breadcrumb a {
  position: relative;
  z-index: 1;
}

.page-hero-news h1 {
  color: #075985;
  text-shadow: 0 2px 12px rgba(255,255,255,0.9);
}

.page-hero-news p {
  color: #0369a1;
  text-shadow: 0 1px 6px rgba(255,255,255,0.9);
}

.page-hero-news .breadcrumb {
  color: rgba(3,105,161,0.8);
}

.page-hero-news .breadcrumb a {
  color: #0369a1;
}

.page-hero-news .breadcrumb a:hover {
  color: var(--primary-dark);
}

/* About Page Hero (with banner image) */
.page-hero-about {
  background: #bae6fd url('../images/about-banner.jpg?v=2') center/cover no-repeat;
  min-height: 360px;
  padding: 90px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero-about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.84) 0%, rgba(186,230,253,0.60) 50%, rgba(186,230,253,0.30) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.32) 0%, rgba(186,230,253,0.0) 60%);
}

.page-hero-about h1,
.page-hero-about p,
.page-hero-about .breadcrumb,
.page-hero-about .breadcrumb a {
  position: relative;
  z-index: 1;
}

.page-hero-about h1 {
  color: #075985;
  text-shadow: 0 2px 12px rgba(255,255,255,0.9);
}

.page-hero-about p {
  color: #0369a1;
  text-shadow: 0 1px 6px rgba(255,255,255,0.9);
}

.page-hero-about .breadcrumb {
  color: rgba(3,105,161,0.8);
}

.page-hero-about .breadcrumb a {
  color: #0369a1;
}

.page-hero-about .breadcrumb a:hover {
  color: var(--primary-dark);
}

/* Contact Page Hero (with banner image) */
.page-hero-contact {
  background: #bae6fd url('../images/contact-banner.jpg?v=2') center/cover no-repeat;
  min-height: 360px;
  padding: 90px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.page-hero-contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(90deg, rgba(186,230,253,0.84) 0%, rgba(186,230,253,0.60) 50%, rgba(186,230,253,0.30) 100%),
    linear-gradient(180deg, rgba(186,230,253,0.32) 0%, rgba(186,230,253,0.0) 60%);
}

.page-hero-contact h1,
.page-hero-contact p,
.page-hero-contact .breadcrumb,
.page-hero-contact .breadcrumb a {
  position: relative;
  z-index: 1;
}

.page-hero-contact h1 {
  color: #075985;
  text-shadow: 0 2px 12px rgba(255,255,255,0.9);
}

.page-hero-contact p {
  color: #0369a1;
  text-shadow: 0 1px 6px rgba(255,255,255,0.9);
}

.page-hero-contact .breadcrumb {
  color: rgba(3,105,161,0.8);
}

.page-hero-contact .breadcrumb a {
  color: #0369a1;
}

.page-hero-contact .breadcrumb a:hover {
  color: var(--primary-dark);
}

/* Product Categories */
.product-categories {
  padding: 64px 0;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
  cursor: pointer;
}

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

.category-card .icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
}

.category-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.category-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 12px;
}

.category-card .brands {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.category-card .brand-tag {
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 600;
}

/* Product List */
.product-list-section {
  background: var(--gray-50);
  padding: 64px 0;
}

.product-filter {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  justify-content: center;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  border: 1px solid var(--gray-300);
  background: var(--white);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
  text-decoration: none;
  color: inherit;
}

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

.product-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
  position: relative;
  padding: 24px;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.product-image .brand-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: var(--white);
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 600;
}

.product-info {
  padding: 20px;
}

.product-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  line-height: 1.4;
}

.product-info .desc {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.5;
}

/* --- Solutions Page --- */
.solution-hero-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--primary-light);
  transition: all 0.3s;
}

.solution-hero-card:hover {
  box-shadow: var(--shadow-xl);
}

.solution-hero-card .icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.solution-hero-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.solution-hero-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
}

.solution-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.solution-detail-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
}

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

.solution-detail-card .scenario {
  display: inline-block;
  background: rgba(14,165,233,0.12);
  color: var(--primary-dark);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.solution-detail-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.solution-detail-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}

.solution-detail-card .features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-detail-card .feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-600);
}

.solution-detail-card .feature-item::before {
  content: '✓';
  color: var(--primary-dark);
  font-weight: 700;
}

/* --- About Page --- */
.about-intro {
  padding: 80px 0;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.about-intro-text p {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-intro-visual {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 48px;
  color: var(--gray-900);
  position: relative;
  overflow: hidden;
}

.about-intro-visual::before {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(14,165,233,0.06);
  border-radius: 50%;
}

.about-intro-visual h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-intro-visual .feature-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.about-intro-visual .feature-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--gray-700);
}

.about-intro-visual .feature-list-item .check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* Values Section */
.values-section {
  background: var(--gray-50);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.3s;
  border: 1px solid var(--gray-200);
}

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

.value-card .icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 20px;
}

.value-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
}

/* --- Contact Page --- */
.contact-section {
  padding: 64px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 48px;
  color: var(--gray-900);
}

.contact-info-card h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-info-card > p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

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

.contact-info-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.contact-info-item .text h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.contact-info-item .text p {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
}

.contact-form-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 48px;
}

.contact-form-card h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.contact-form-card > p {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 14px;
  color: var(--gray-800);
  transition: border-color 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate {
  animation: fadeInUp 0.6s ease forwards;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .brands-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .category-grid,
  .adv-grid,
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 平板：Hero 海报适当压缩高度 */
  .hero {
    min-height: 460px;
  }
  .hero::before {
    background:
      linear-gradient(90deg, rgba(186,230,253,0.88) 0%, rgba(186,230,253,0.66) 40%, rgba(186,230,253,0.30) 75%, rgba(186,230,253,0.0) 100%);
  }
  .hero-content {
    padding: 44px 0;
  }
  .hero-content .container {
    padding: 0 24px;
    max-width: 720px;
    margin-left: 0;
    margin-right: auto;
  }
  .hero h1 {
    font-size: 40px;
  }
  .hero-stats {
    gap: 32px;
    margin-top: 36px;
  }
  .about-image-card,
  .about-intro-visual,
  .contact-info-card,
  .contact-form-card {
    padding: 36px;
  }
  .footer-grid {
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

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

  .mobile-toggle {
    display: block;
  }

  .nav-inner {
    height: 60px;
    padding: 0 16px;
  }

  .nav-logo-img {
    height: 34px;
    max-width: 130px;
  }

  .logo-text {
    font-size: 16px;
  }

  .nav-menu {
    top: 60px;
  }

  .nav-menu a {
    font-size: 16px;
    padding: 8px 0;
  }

  .nav-cta {
    text-align: center;
    width: 100%;
    font-size: 16px;
  }

  /* 手机：Hero 海报整体铺底，文字区整体加深保证可读 */
  .hero {
    min-height: 420px;
    background-position: center;
  }
  .hero::before {
    background:
      linear-gradient(180deg, rgba(186,230,253,0.90) 0%, rgba(186,230,253,0.76) 55%, rgba(186,230,253,0.60) 100%);
  }
  .hero-content {
    padding: 36px 0;
  }
  .hero-content .container {
    max-width: 100%;
    padding: 0 24px;
    margin-left: 0;
    margin-right: auto;
  }
  .hero-badge {
    font-size: 12px;
    padding: 5px 12px;
    margin-bottom: 18px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 22px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
  }
  .hero-stats {
    gap: 18px 28px;
    margin-top: 30px;
  }
  .hero-stat-item .num {
    font-size: 26px;
  }
  .hero-stat-item .label {
    font-size: 12px;
  }

  .page-hero {
    padding: 110px 0 44px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero p {
    font-size: 14px;
  }

  .page-hero-products {
    min-height: 300px;
    padding: 70px 0 44px;
  }
  .page-hero-products h1 {
    font-size: 32px;
  }

  .page-hero-solutions {
    min-height: 300px;
    padding: 70px 0 44px;
  }
  .page-hero-solutions h1 {
    font-size: 32px;
  }

  .page-hero-news,
  .page-hero-about,
  .page-hero-contact {
    min-height: 300px;
    padding: 70px 0 44px;
  }
  .page-hero-news h1,
  .page-hero-about h1,
  .page-hero-contact h1 {
    font-size: 32px;
  }

  .section-title {
    font-size: 28px;
  }

  .about-grid,
  .about-intro-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .business-grid,
  .solution-detail-grid {
    grid-template-columns: 1fr;
  }

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

  .adv-grid,
  .values-grid,
  .category-grid {
    grid-template-columns: 1fr;
  }

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

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

  .about-highlights {
    grid-template-columns: 1fr;
  }

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

  .about-image-card,
  .about-intro-visual,
  .contact-info-card,
  .contact-form-card {
    padding: 32px 24px;
  }

  .business-card,
  .adv-card,
  .value-card,
  .solution-detail-card,
  .solution-hero-card {
    padding: 28px 24px;
  }

  .business-card {
    background-size: 180px auto;
    background-position: right -10px center;
  }

  .cta-section h2 {
    font-size: 26px;
  }

  section {
    padding: 56px 0;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

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

  .hero {
    min-height: 400px;
  }
  .hero-content {
    padding: 28px 0;
  }
  .hero-content .container {
    padding: 0 20px;
    margin-left: 0;
    margin-right: auto;
  }
  .hero h1 {
    font-size: 26px;
  }
  .hero-subtitle {
    font-size: 14px;
    line-height: 1.65;
  }
  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 20px;
    margin-top: 26px;
  }
  .hero-stat-item .num {
    font-size: 24px;
  }

  .section-title {
    font-size: 24px;
  }

  .brands-grid {
    gap: 12px;
  }
  .brand-card {
    padding: 22px 12px;
    gap: 8px;
  }
  .brand-card .brand-logo {
    width: 54px;
    height: 54px;
    padding: 4px;
    font-size: 18px;
  }
  .brand-card .brand-name {
    font-size: 14px;
  }
  .brand-card .brand-cat {
    font-size: 12px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .page-hero {
    padding: 96px 0 36px;
  }
  .page-hero h1 {
    font-size: 28px;
  }

  .product-filter {
    gap: 8px;
  }
  .filter-btn {
    padding: 7px 14px;
    font-size: 13px;
  }

  .contact-info-item .icon {
    width: 42px;
    height: 42px;
    font-size: 18px;
  }

  .business-card {
    background-size: 140px auto;
    background-position: right -8px center;
  }

  .page-hero-products {
    min-height: 240px;
    padding: 56px 0 36px;
  }
  .page-hero-products h1 {
    font-size: 26px;
  }
  .page-hero-products p {
    font-size: 13px;
  }

  .page-hero-solutions {
    min-height: 240px;
    padding: 56px 0 36px;
  }
  .page-hero-solutions h1 {
    font-size: 26px;
  }
  .page-hero-solutions p {
    font-size: 13px;
  }

  .page-hero-news,
  .page-hero-about,
  .page-hero-contact {
    min-height: 240px;
    padding: 56px 0 36px;
  }
  .page-hero-news h1,
  .page-hero-about h1,
  .page-hero-contact h1 {
    font-size: 26px;
  }
  .page-hero-news p,
  .page-hero-about p,
  .page-hero-contact p {
    font-size: 13px;
  }

  .news-list {
    grid-template-columns: 1fr;
  }
}