/* ===== Typography ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@500;700&family=Playfair+Display:wght@600;700&display=swap');

:root {
  --primary: #0a1f3f;
  --primary-light: #13294b;
  --primary-dark: #040d1a;
  --accent: #c9a962;
  --accent-light: #e0c78a;
  --accent-dark: #a88b4a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --bg: #f8fafc;
  --bg-warm: #f1f5f9;
  --white: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(10,31,63,0.06);
  --shadow-md: 0 8px 30px rgba(10,31,63,0.08);
  --shadow-lg: 0 20px 50px rgba(10,31,63,0.12);
  --shadow-accent: 0 8px 30px rgba(201,169,98,0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1 0 auto;
  padding-top: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

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

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: 0 1px 0 rgba(10,31,63,0.06);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  letter-spacing: -0.5px;
  transition: var(--transition);
}

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

/* Desktop Navigation */
.nav {
  display: flex;
  gap: 28px;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: var(--accent);
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

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

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

.lang-switch {
  display: flex;
  gap: 6px;
}

.lang-btn {
  padding: 7px 16px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-light);
  border-radius: 30px;
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Footer ===== */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.65);
  padding: 48px 0 32px;
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.4rem;
  color: white;
  margin-bottom: 12px;
}

.footer-desc {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--accent-light);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ===== Carousel Banner ===== */
.banner-carousel {
  width: 100%;
  margin-top: 76px;
  padding: 0;
}

.carousel-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  max-height: 780px;
  background: var(--primary-dark);
}

.carousel-slides {
  display: flex;
  transition: opacity 0.8s ease;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide.active {
  opacity: 1;
  position: relative;
}

.carousel-slide img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 780px;
  filter: brightness(0.75) contrast(1.05);
}

.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 100px 40px 80px;
  color: white;
  background: linear-gradient(to top, rgba(4,13,26,0.85) 0%, rgba(4,13,26,0.4) 60%, transparent 100%);
  text-align: left;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.carousel-caption h1 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 18px;
  line-height: 1.2;
  max-width: 700px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.carousel-caption p {
  font-size: 1.15rem;
  max-width: 560px;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.carousel-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.dot:hover {
  background: rgba(255,255,255,0.6);
}

.dot.active {
  background: var(--accent);
  transform: scale(1.2);
}

/* ===== Section Headers ===== */
section {
  padding: 100px 0;
}

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

.section-header h2 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--accent);
  margin: 18px auto 0;
  border-radius: 2px;
}

.section-header p {
  color: var(--text-light);
  margin-top: 16px;
  font-size: 1.05rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Product/Category Cards ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 20px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 280px;
  overflow: hidden;
  position: relative;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201,169,98,0.3);
}

.service-card .card-image-wrapper {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
  background: var(--bg-warm);
}

.service-card .card-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .card-image-wrapper img {
  transform: scale(1.08);
}

.service-card .card-content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  line-height: 1;
}

.service-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.15rem;
  color: var(--primary);
  margin: 0;
  line-height: 1.4;
  font-weight: 600;
}

.service-card .card-arrow {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--accent-dark);
  opacity: 0;
  transform: translateX(-8px);
  transition: var(--transition);
  font-weight: 500;
}

.service-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ===== Advantages ===== */
.advantages {
  background: linear-gradient(180deg, var(--white) 0%, var(--bg) 100%);
  position: relative;
}

.advantages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.advantage-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  background: var(--white);
  transition: var(--transition);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.advantage-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(201,169,98,0.25);
}

.advantage-card:hover::before {
  transform: scaleX(1);
}

.advantage-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
  line-height: 1;
}

.advantage-card h3 {
  font-family: 'Noto Serif SC', serif;
  color: var(--primary);
  margin-bottom: 12px;
  font-size: 1.15rem;
  font-weight: 600;
}

.advantage-card p {
  color: var(--text-light);
  font-size: 0.92rem;
  max-width: 240px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== News List ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  background: white;
  padding: 24px 28px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(201,169,98,0.25);
  transform: translateX(4px);
}

.news-item h4 {
  font-size: 1.05rem;
  font-weight: 600;
  flex: 1;
}

.news-item h4 a {
  color: var(--primary);
  transition: var(--transition);
}

.news-item h4 a:hover {
  color: var(--accent-dark);
}

.news-item .news-meta {
  color: var(--text-muted);
  font-size: 0.88rem;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  margin-bottom: 36px;
  font-size: 0.92rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--accent-dark);
  font-weight: 500;
  transition: var(--transition);
}

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

/* ===== Product Detail ===== */
.product-detail {
  padding-top: 100px;
  padding-bottom: 100px;
}

.product-detail-container {
  max-width: 1080px;
}

.product-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-gallery {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: white;
  border: 1px solid var(--border);
}

.product-main-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 4/3;
  background: var(--bg-warm);
}

.product-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--text-muted);
  background: var(--bg-warm);
}

.product-placeholder p {
  font-size: 1rem;
  margin-top: 10px;
  color: var(--text-light);
}

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

.product-title {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
}

.product-divider {
  height: 3px;
  width: 50px;
  background: var(--accent);
  border-radius: 2px;
}

.product-description {
  line-height: 1.85;
  color: var(--text-light);
  font-size: 1.02rem;
}

.product-description p {
  margin-bottom: 12px;
}

.product-description h3 {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin: 24px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.product-description ul {
  margin: 12px 0 16px 4px;
  padding-left: 20px;
}

.product-description li {
  margin-bottom: 8px;
  list-style-type: disc;
}

.product-actions {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  padding: 13px 32px;
  border-radius: 30px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-family: inherit;
}

.btn-inquiry {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 15px rgba(201,169,98,0.25);
}

.btn-inquiry:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

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

.btn-back:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-more:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: white;
}

/* ===== QA List ===== */
.qa-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.qa-item {
  background: white;
  padding: 20px 28px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border: 1px solid var(--border);
}

.qa-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(201,169,98,0.25);
  transform: translateX(4px);
}

.qa-item a {
  color: var(--primary);
  font-weight: 600;
  flex: 1;
  min-width: 150px;
  font-size: 1.02rem;
  transition: var(--transition);
}

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

.qa-item .qa-date {
  color: var(--text-muted);
  font-size: 0.88rem;
  white-space: nowrap;
}

/* ===== Cases Grid ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 20px;
}

.case-card {
  background: white;
  padding: 36px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
  display: block;
  color: inherit;
  text-decoration: none;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201,169,98,0.25);
}

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

.case-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  line-height: 1;
}

.case-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 600;
}

.case-card .case-date {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== Pagination ===== */
.pagination-nav {
  text-align: center;
  margin-top: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.pagination-nav .page-btn {
  background: var(--primary);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pagination-nav .page-btn:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.pagination-nav .page-info {
  margin: 0 16px;
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ===== Content Pages (About, Company, Contact) ===== */
.content-page {
  padding-top: 100px;
  padding-bottom: 100px;
}

.content-page h1 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 2.2rem;
  color: var(--primary);
  margin-bottom: 24px;
  text-align: center;
}

.content-page .page-content {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 48px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  line-height: 1.85;
  color: var(--text-light);
}

.content-page .page-content p {
  margin-bottom: 16px;
}

.content-page .page-content img {
  border-radius: var(--radius-sm);
  margin: 20px 0;
}

/* ===== News/Tech Detail ===== */
.detail-page {
  padding-top: 100px;
  padding-bottom: 100px;
}

.detail-container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 48px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.detail-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.detail-header h1 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 1.9rem;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.detail-header .detail-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-body {
  line-height: 1.85;
  color: var(--text-light);
  font-size: 1.02rem;
}

.detail-body p {
  margin-bottom: 16px;
}

.detail-actions {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ===== Stats Trust Bar ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.stats-grid {
  display: flex;
  justify-content: space-around;
  align-items: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  color: white;
  flex: 1;
}

.stat-number {
  font-family: 'Playfair Display', 'Noto Serif SC', serif;
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.15);
}

/* ===== Certifications ===== */
.certifications {
  background: linear-gradient(180deg, var(--bg) 0%, var(--white) 100%);
}

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

.cert-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.cert-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201,169,98,0.2);
}

.cert-item:hover::after {
  transform: scaleX(1);
}

.cert-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.cert-name {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.cert-desc {
  font-size: 0.88rem;
  color: var(--text-light);
}

/* ===== Global Coverage ===== */
.global-coverage {
  background: var(--white);
  position: relative;
}

.global-coverage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

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

.coverage-region {
  background: linear-gradient(135deg, var(--bg) 0%, var(--white) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.coverage-region:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(201,169,98,0.25);
}

.coverage-flag {
  font-size: 2.4rem;
  margin-bottom: 14px;
}

.coverage-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.coverage-countries {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(180deg, var(--bg-warm) 0%, var(--bg) 100%);
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius);
  padding: 56px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201,169,98,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.cta-content h2 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 1.9rem;
  color: white;
  margin-bottom: 12px;
  line-height: 1.3;
}

.cta-content p {
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  max-width: 500px;
}

.btn-cta {
  background: var(--accent);
  color: var(--primary-dark);
  padding: 16px 36px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  box-shadow: 0 8px 30px rgba(201,169,98,0.3);
  position: relative;
  z-index: 1;
  white-space: nowrap;
}

.btn-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(201,169,98,0.4);
}

/* ===== Category Page ===== */
.category-page h1 {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  font-size: 2.2rem;
  color: var(--primary);
  text-align: center;
  margin-bottom: 8px;
}

.category-page .category-desc {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 40px;
  font-size: 1rem;
}

/* ========== Mobile Responsive ========== */
@media (max-width: 992px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .carousel-caption {
    padding: 60px 28px 60px;
  }

  .carousel-caption h1 {
    font-size: 2.2rem;
  }

  .product-layout {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    box-shadow: var(--shadow-md);
    padding: 12px 0;
    border-top: 1px solid var(--border);
    gap: 0;
  }

  .nav.active {
    display: flex;
    animation: fadeIn 0.3s ease;
  }

  .nav-link {
    padding: 14px 28px;
    border-bottom: 1px solid var(--border);
  }

  .nav-link::after {
    display: none;
  }

  .lang-switch {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 12px;
    padding: 0 28px;
  }

  .header-inner {
    flex-wrap: wrap;
    height: 72px;
  }

  .carousel-container {
    max-height: 500px;
  }

  .carousel-slide img {
    max-height: 500px;
  }

  .carousel-caption {
    padding: 50px 20px 50px;
    text-align: center;
  }

  .carousel-caption h1 {
    font-size: 1.7rem;
    max-width: 100%;
  }

  .carousel-caption p {
    font-size: 1rem;
    max-width: 100%;
  }

  .services-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .service-card {
    min-height: 220px;
  }

  .service-card .card-image-wrapper {
    height: 160px;
  }

  .service-icon {
    font-size: 2.5rem;
  }

  .service-card h3 {
    font-size: 1.05rem;
  }

  .advantages-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .advantage-card {
    padding: 28px 16px;
  }

  .advantage-icon {
    font-size: 2.2rem;
  }

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

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

  .product-title {
    font-size: 1.7rem;
  }

  section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .section-header h2 {
    font-size: 1.7rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer-desc {
    max-width: 100%;
    margin: 0 auto;
  }

  .content-page .page-content,
  .detail-container {
    padding: 28px;
  }

  .detail-header h1 {
    font-size: 1.5rem;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* Corporate sections responsive */
  .stats-grid {
    flex-wrap: wrap;
    gap: 24px;
  }

  .stat-item {
    flex: 1 1 40%;
    min-width: 140px;
  }

  .stat-divider {
    display: none;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .cert-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .cert-item {
    padding: 28px 16px;
  }

  .coverage-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .cta-box {
    flex-direction: column;
    text-align: center;
    padding: 40px 28px;
    gap: 24px;
  }

  .cta-content h2 {
    font-size: 1.5rem;
  }

  .cta-content p {
    max-width: 100%;
  }
}

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

  .carousel-container {
    max-height: 380px;
  }

  .carousel-slide img {
    max-height: 380px;
  }

  .carousel-caption h1 {
    font-size: 1.4rem;
  }

  .case-card,
  .qa-item,
  .news-item {
    padding: 20px;
  }

  .btn {
    padding: 11px 24px;
    font-size: 0.9rem;
  }

  .stats-grid {
    gap: 16px;
  }

  .stat-item {
    flex: 1 1 45%;
    min-width: 120px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .stat-label {
    font-size: 0.85rem;
  }

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

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

  .cta-box {
    padding: 32px 20px;
  }

  .cta-content h2 {
    font-size: 1.3rem;
  }

  .btn-cta {
    padding: 14px 28px;
    font-size: 0.95rem;
  }
}

.whatsapp-float {
  position: fixed;
  bottom: 80px;
  right: 24px;
  background-color: #25D366;
  color: white;
  border-radius: 50px;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  z-index: 9999;
  transition: all 0.3s ease;
  text-decoration: none;
  font-weight: 600;
}

.whatsapp-float:hover {
  background-color: #20bd5a;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
  color: white;
}

.whatsapp-text {
  font-size: 0.95rem;
  white-space: nowrap;
}

/* 移动端适配：小屏幕仅显示图标 */
@media (max-width: 600px) {
  .whatsapp-float {
    padding: 12px;
    border-radius: 50%;
    bottom: 60px;
    right: 16px;
  }
  .whatsapp-text {
    display: none;
  }
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}