/* AGM Website V2 - 工业建材风格 - 专业现代 */
:root {
  --primary: #1a365d;
  --primary-dark: #0f2341;
  --secondary: #2c5282;
  --accent: #c9a962;
  --accent-dark: #a88a4a;
  --white: #ffffff;
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e0;
  --gray-500: #718096;
  --gray-700: #4a5568;
  --gray-900: #1a202c;
  --text: #2d3748;
  --text-light: #718096;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 54, 93, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(26, 54, 93, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-text {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
}

.logo-sub {
  font-size: 14px;
  color: var(--white);
  opacity: 0.9;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}

.nav-links a {
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 8px 0;
  transition: var(--transition);
}

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

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--primary);
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--primary);
  padding: 24px;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu ul {
  list-style: none;
}

.mobile-menu li a {
  display: block;
  color: var(--white);
  text-decoration: none;
  padding: 16px 0;
  font-size: 18px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-menu li a:hover {
  color: var(--accent);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--primary);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(15, 35, 65, 0.85) 100%),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(201,169,98,0.08)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  background-size: cover, 80px 80px;
}

.hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--white), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 120px 24px 80px;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,169,98,0.12);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(48px, 7vw, 72px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease-out 0.1s backwards;
}

.hero-title .gold {
  color: var(--accent);
}

.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  line-height: 1.9;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(201,169,98,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}

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

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

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

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

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-3px);
}

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

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

/* Stats Section */
.stats-section {
  background: var(--white);
  padding: 60px 0;
  margin-top: -100px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--white);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.stat-card {
  text-align: center;
  padding: 24px;
  border-radius: 12px;
  transition: var(--transition);
}

.stat-card:hover {
  background: var(--gray-50);
}

.stat-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.stat-icon i {
  font-size: 24px;
  color: var(--white);
}

.stat-num {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-num::after {
  content: '+';
  font-size: 32px;
}

.stat-card:nth-child(4) .stat-num::after {
  content: '';
}

.stat-label {
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--text-light);
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

.section-header-row .section-title {
  margin-bottom: 8px;
}

/* Products Grid */
.products-section {
  background: var(--gray-50);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.product-img {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-img i {
  font-size: 64px;
  color: var(--white);
  opacity: 0.9;
}

.product-info {
  padding: 24px;
}

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

.product-info p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.product-link i {
  transition: transform var(--transition);
}

.product-card:hover .product-link i {
  transform: translateX(4px);
}

.section-more {
  text-align: center;
  margin-top: 48px;
}

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

.about-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-preview-text h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
  color: var(--primary);
}

.about-preview-text > p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.about-features {
  display: grid;
  gap: 16px;
  margin-bottom: 32px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 500;
}

.feature-item i {
  font-size: 20px;
  color: var(--accent);
}

.about-preview-visual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.visual-box {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 32px;
  border-radius: 16px;
  text-align: center;
  color: var(--white);
}

.visual-box:nth-child(1) {
  grid-column: span 2;
}

.visual-num {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.visual-num::after {
  content: '+';
}

.visual-box:nth-child(4) .visual-num::after {
  content: '';
}

.visual-label {
  font-size: 14px;
  opacity: 0.9;
}

/* Certifications */
.cert-section {
  background: var(--gray-50);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.cert-card {
  background: var(--white);
  padding: 40px;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.cert-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.cert-icon i {
  font-size: 36px;
  color: var(--white);
}

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

.cert-card p {
  font-size: 15px;
  color: var(--text-light);
}

/* Why Section */
.why-section {
  background: var(--primary);
  color: var(--white);
}

.why-section .section-title {
  color: var(--white);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.why-card {
  padding: 32px;
  background: rgba(255,255,255,0.05);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.why-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-5px);
}

.why-num {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}

.why-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.why-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

/* News Section */
.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
}

.news-card {
  background: var(--gray-50);
  padding: 32px;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--gray-200);
}

.news-card:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.news-card:hover * {
  color: var(--white) !important;
}

.news-featured {
  min-height: 280px;
}

.news-date {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}

.news-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.news-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
  flex-grow: 1;
}

.news-link {
  margin-top: 16px;
  color: var(--accent);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-link i {
  transition: transform var(--transition);
}

.news-card:hover .news-link i {
  transform: translateX(4px);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--gray-50);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.news-item:hover {
  background: var(--gray-100);
}

.news-item-date {
  font-size: 13px;
  color: var(--gray-500);
  white-space: nowrap;
}

.news-item-title {
  font-size: 15px;
  font-weight: 500;
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 24px;
  padding: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(201,169,98,0.15) 0%, transparent 70%);
}

.cta-box h2 {
  font-size: clamp(28px, 4vw, 40px);
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  position: relative;
}

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

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-logo span {
  color: var(--accent);
  margin-left: 8px;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin-bottom: 24px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255,255,255,0.8);
}

.footer-contact a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--accent);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-wechat {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}

.footer-qr img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
}

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

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

/* Responsive */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }
  
  .nav-cta {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-preview-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-stats {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .why-grid {
    grid-template-columns: 1fr;
  }
  
  .news-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  
  .cta-box {
    padding: 40px 24px;
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  .cert-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px;
  }
  
  .stat-num {
    font-size: 36px;
  }
}

/* Page Header */
.about-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 160px 0 80px;
  text-align: center;
  color: white;
}

.page-header {
  position: relative;
  background: var(--primary);
  padding: 160px 0 80px;
  text-align: center;
}

.page-header-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.9), rgba(15, 35, 65, 0.85));
}

.page-header h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
}

.page-header p {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  position: relative;
}

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

.about-image {
  position: relative;
}

.about-img-placeholder {
  aspect-ratio: 1/1; height: auto; max-height: 400px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.about-img-placeholder i {
  font-size: 64px;
  color: var(--gray-400);
}

.about-img-placeholder span {
  font-size: 14px;
  color: var(--gray-500);
}

.about-text h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.about-highlights {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.highlight-item {
  text-align: center;
}

.highlight-num {
  display: block;
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.highlight-num::after {
  display: none;
}

.highlight-label {
  font-size: 14px;
  color: var(--text-light);
}

/* Timeline */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: calc(50% + 30px);
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: calc(50% + 30px);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 20px;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-50%);
}

.timeline-year {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-light);
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--white);
  padding: 32px;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.team-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.team-icon i {
  font-size: 32px;
  color: var(--white);
}

.team-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.team-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Product Category */
.product-category {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.category-btn {
  padding: 12px 28px;
  border: 2px solid var(--gray-300);
  background: var(--white);
  border-radius: 30px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text);
}

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

.products-full-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-full-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.product-full-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-full-img {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-full-img i {
  font-size: 56px;
  color: var(--white);
  opacity: 0.9;
}

.product-full-info {
  padding: 24px;
}

.product-full-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary);
}

.product-full-info p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.product-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.product-tag {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-light);
}

.product-price {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--gray-50);
  border-radius: 12px;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.contact-item:hover {
  background: var(--primary);
}

.contact-item:hover * {
  color: var(--white) !important;
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--white);
  flex-shrink: 0;
}

.contact-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

.contact-item p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
}

.contact-item a {
  color: inherit;
  text-decoration: none;
}

.contact-form-box {
  background: var(--white);
  padding: 40px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.contact-form-box h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

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

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

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.form-submit:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

/* Case Grid */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.case-img {
  height: 240px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-img i {
  font-size: 64px;
  color: var(--white);
  opacity: 0.9;
}

.case-info {
  padding: 24px;
}

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

.case-info p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}

.case-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.case-tag {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-light);
}

.case-tag.highlight {
  background: rgba(201,169,98,0.1);
  color: var(--accent);
}

/* Product Detail */
.product-detail {
  padding-top: 120px;
}

.breadcrumb {
  margin-bottom: 32px;
  font-size: 14px;
  color: var(--text-light);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

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

.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.product-gallery {
  height: 450px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.product-gallery i {
  font-size: 100px;
  color: var(--gray-400);
}

.product-gallery span {
  font-size: 14px;
  color: var(--gray-500);
}

.product-info h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.product-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 6px 16px;
  border-radius: 4px;
  font-size: 14px;
  margin-bottom: 24px;
}

.product-info > p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.product-specs {
  background: var(--gray-50);
  padding: 24px;
  border-radius: 12px;
  margin-bottom: 24px;
  border: 1px solid var(--gray-200);
}

.product-specs h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--primary);
}

.spec-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-200);
}

.spec-label {
  color: var(--text-light);
}

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

.product-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.feature-box {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--gray-50);
  border-radius: 12px;
  border: 1px solid var(--gray-200);
}

.feature-box-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-box-icon i {
  font-size: 24px;
  color: var(--white);
}

.feature-box h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--primary);
}

.feature-box p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
}

.applications {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.app-item {
  text-align: center;
  padding: 32px;
  background: var(--gray-50);
  border-radius: 12px;
  border: 1px solid var(--gray-200);
}

.app-item i {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 16px;
}

.app-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
}

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

.related-card {
  background: var(--gray-50);
  padding: 24px;
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 16px;
}

.related-card:hover {
  background: var(--gray-100);
}

.related-card i {
  font-size: 48px;
  color: var(--primary);
}

.related-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.related-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* News Featured */
.news-featured-full {
  background: var(--gray-50);
  padding: 48px;
  border-radius: 16px;
  margin-bottom: 48px;
  border: 1px solid var(--gray-200);
}

.news-featured-full h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.news-featured-full .news-meta {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.news-featured-full p {
  font-size: 16px;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 16px;
}

@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 60px;
    padding-right: 0;
    justify-content: flex-start;
  }
  
  .timeline-item::before {
    left: 20px;
  }
  
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .product-hero {
    grid-template-columns: 1fr;
  }
  
  .product-features {
    grid-template-columns: 1fr;
  }
  
  .applications {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .related-products {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-highlights {
    flex-direction: column;
    gap: 24px;
  }
  
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .cases-grid {
    grid-template-columns: 1fr;
  }
  
  .products-full-grid {
    grid-template-columns: 1fr;
  }
  
  .applications {
    grid-template-columns: 1fr;
  }
}

/* ===== 补充工具类 & 移动端适配 ===== */

/* font-display swap for Google Fonts fallback */
@font-face {
  font-family: 'Noto Sans SC';
  font-display: swap;
}

/* 发展历程 / 产能 / 统计 网格 */
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 8px;
}

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

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 8px;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.service-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

/* 产品详情页通用卡片 */
.scene-card {
  background: var(--gray-50);
  border-radius: 10px;
  padding: 20px;
}

.scene-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.scene-card p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
  line-height: 1.7;
}

.service-card {
  text-align: center;
  padding: 20px;
  background: var(--gray-50);
  border-radius: 10px;
}

.service-card i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}

.service-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
}

.cta-inline {
  margin-top: 24px;
  padding: 20px 28px;
  background: var(--primary);
  border-radius: 12px;
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.cta-inline p {
  margin: 0;
  color: white;
}

.cta-inline .cta-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.cta-inline .cta-sub {
  font-size: 13px;
  opacity: 0.8;
}

.cta-inline a {
  background: var(--accent);
  color: white;
  padding: 12px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* 移动端适配补充 */
@media (max-width: 768px) {
  .timeline-grid {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .cta-inline {
    flex-direction: column;
    text-align: center;
  }

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

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

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

  .detail-gallery {
    grid-template-columns: 1fr;
  }
}

/* Product Gallery Images */
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  display: block;
  transition: transform 0.3s ease;
}
.gallery-item:hover img {
  transform: scale(1.03);
}
.detail-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* 产品图片展示 - 修复图片文字重叠 */
.product-gallery {
  margin-top: 24px;
  margin-bottom: 24px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  clear: both;
}

.gallery-grid img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--gray-200);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-grid img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow);
}

@media (max-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gallery-grid img {
    height: 200px;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid img {
    height: 280px;
  }
}

/* 移动端响应式修复 - 添加到 style.css 末尾 */

/* ===== 全局图片自适应 ===== */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 额外的移动端适配 ===== */
@media (max-width: 768px) {
  /* 容器内边距调整 */
  .container {
    padding: 0 16px;
  }
  
  /* 导航栏高度调整 */
  .nav-inner {
    height: 64px;
  }
  
  .logo-text {
    font-size: 24px;
  }
  
  .logo-sub {
    font-size: 12px;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  /* Hero 区域调整 */
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero-title {
    font-size: 28px;
    line-height: 1.3;
  }
  
  .hero-desc {
    font-size: 14px;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }
  
  /* 按钮全宽 */
  .btn {
    padding: 14px 24px;
    font-size: 15px;
  }
  
  /* 页面标题调整 */
  .page-header {
    padding: 120px 0 60px;
  }
  
  .page-header h1 {
    font-size: 28px;
  }
  
  /* 产品卡片调整 */
  .product-card,
  .system-card,
  .case-card {
    margin-bottom: 16px;
  }
  
  /* 表单调整 */
  input,
  textarea,
  select {
    font-size: 16px; /* 防止 iOS 缩放 */
    padding: 14px;
  }
  
  /* 联系信息调整 */
  .contact-info {
    padding: 24px 16px;
  }
  
  /* 页脚调整 */
  .footer-grid {
    gap: 32px;
  }
  
  .footer-col h4 {
    font-size: 16px;
  }
  
  /* 新闻列表调整 */
  .news-item {
    padding: 16px;
  }
  
  .news-title {
    font-size: 15px;
  }
  
  /* 面包屑调整 */
  .breadcrumb {
    font-size: 13px;
    flex-wrap: wrap;
  }
  
  /* 产品详情页 */
  .product-hero h1 {
    font-size: 24px;
  }
  
  .product-meta {
    flex-direction: column;
    gap: 8px;
  }
  
  /* 案例详情页图片 */
  .case-gallery img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
  }
  
  /* 防止表格溢出 */
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  /* 文本溢出处理 */
  h1, h2, h3, h4, h5, h6 {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
}

/* ===== 超小屏幕适配 ===== */
@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }
  
  .section-title {
    font-size: 22px;
  }
  
  .logo-sub {
    display: none; /* 超小屏幕隐藏副标题 */
  }
  
  .stats-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .stat-num {
    font-size: 28px;
  }
}

/* ===== 触摸优化 ===== */
@media (hover: none) and (pointer: coarse) {
  /* 增大触摸目标 */
  .nav-links a,
  .mobile-menu li a,
  .footer-col a,
  .btn {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  /* 移除 hover 效果 */
  .product-card:hover,
  .case-card:hover,
  .why-card:hover {
    transform: none;
  }
}

/* ===== 产品详情页移动端适配 ===== */
@media (max-width: 768px) {
  .detail-hero { padding: 100px 0 40px !important; }
  .detail-hero h1 { font-size: 24px !important; }
  .detail-bread { font-size: 12px !important; flex-wrap: wrap !important; }
  .detail-section { padding: 40px 0 !important; }
  .detail-section h2 { font-size: 18px !important; }
  .specs-table { display: block !important; overflow-x: auto !important; white-space: nowrap !important; }
  .specs-table th, .specs-table td { padding: 10px 12px !important; font-size: 12px !important; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr) !important; gap: 12px !important; }
  .adv-grid, .series-grid { grid-template-columns: 1fr !important; }
  .related-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 12px !important; }
}
@media (max-width: 480px) {
  .detail-gallery, .related-grid { grid-template-columns: 1fr !important; }
}