:root {
  --primary: #e94560;
  --primary-dark: #c73550;
  --primary-light: #ff6b81;
  --secondary: #0f3460;
  --secondary-light: #1a4a7a;
  --accent: #533483;
  --bg-dark: #1a1a2e;
  --bg-darker: #0f0f1a;
  --bg-card: #16213e;
  --bg-card-hover: #1c2a4a;
  --text-primary: #ffffff;
  --text-secondary: #b8b8d0;
  --text-muted: #8888a8;
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(22, 33, 62, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --header-height: 72px;
}

[data-theme="light"] {
  --bg-dark: #f5f5fa;
  --bg-darker: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f8;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8888a8;
  --border-color: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --secondary: #0f3460;
  --secondary-light: #1a4a7a;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-dark);
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

::selection {
  background-color: var(--primary);
  color: #ffffff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
  background: var(--secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(26, 26, 46, 0.92);
}

[data-theme="light"] #site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-area a {
  display: flex;
  align-items: center;
  transition: transform var(--transition-base);
}

.logo-area a:hover {
  transform: scale(1.05);
}

.logo-area svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-tagline {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
  line-height: 1.2;
  white-space: nowrap;
}

#main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: transform var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(233, 69, 96, 0.08);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

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

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

.search-form {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  overflow: hidden;
  transition: all var(--transition-base);
  height: 38px;
}

[data-theme="light"] .search-form {
  background: rgba(0, 0, 0, 0.04);
}

.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .search-form:focus-within {
  background: #ffffff;
}

.search-form input {
  width: 160px;
  padding: 0 14px;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 13px;
}

.search-form input::placeholder {
  color: var(--text-muted);
}

.search-form button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 100%;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.search-form button:hover {
  color: var(--primary);
}

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

[data-theme="light"] .theme-btn {
  background: rgba(0, 0, 0, 0.04);
}

.theme-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(233, 69, 96, 0.1);
  transform: rotate(15deg);
}

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.mobile-menu-btn:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.1);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 12px 0;
  z-index: 999;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.mobile-nav:not([hidden]) {
  display: block;
  animation: slideDown 0.3s ease forwards;
}

.mobile-nav ul {
  padding: 0 20px;
}

.mobile-nav li a {
  display: block;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-nav li a:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.08);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#main-content {
  padding-top: var(--header-height);
}

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

.hero-slider {
  position: relative;
  width: 100%;
  height: 520px;
  overflow: hidden;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 0 24px;
  max-width: 860px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(26px, 4.5vw, 48px);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.8s ease forwards;
}

.hero-subtitle {
  font-size: clamp(14px, 1.8vw, 18px);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  max-width: 640px;
  line-height: 1.7;
  animation: fadeInUp 0.8s 0.15s ease forwards;
  opacity: 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s 0.3s ease forwards;
  opacity: 0;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 50px;
  transition: all var(--transition-base);
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(233, 69, 96, 0.55);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.slider-prev,
.slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  transition: all var(--transition-base);
}

.slider-prev {
  left: 24px;
}

.slider-next {
  right: 24px;
}

.slider-prev:hover,
.slider-next:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.5);
}

.slider-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 10px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transition: all var(--transition-base);
  border: none;
  padding: 0;
}

.dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.6);
}

.dot:hover:not(.active) {
  background: rgba(255, 255, 255, 0.6);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-color);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 16px;
  background: var(--bg-darker);
  transition: background var(--transition-base);
}

.stat-item:hover {
  background: var(--bg-card);
}

.stat-number {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.breadcrumb {
  padding: 16px 0;
  background: var(--bg-darker);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  font-size: 13px;
  flex-wrap: wrap;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-darker);
}

.section-title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 20px;
  letter-spacing: -0.3px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.section-desc {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
  background: var(--bg-card-hover);
}

.about-card:hover::before {
  opacity: 1;
}

.about-card h3 {
  font-size: 19px;
  margin-bottom: 16px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-card h3::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.about-card p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-card strong {
  color: var(--text-primary);
}

.team-intro {
  margin-top: 40px;
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.team-intro:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

.team-intro h3 {
  font-size: 20px;
  margin-bottom: 18px;
  color: var(--primary);
}

.team-intro p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.team-intro p:last-child {
  margin-bottom: 0;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.06), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(233, 69, 96, 0.35);
  background: var(--bg-card-hover);
}

.product-card:hover::after {
  opacity: 1;
}

.product-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 20px;
  transition: transform var(--transition-base);
}

.product-card:hover .product-icon {
  transform: scale(1.1) rotate(-3deg);
}

.product-card h3 {
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.product-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}

.product-advantages {
  margin-top: 48px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.product-advantages:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

.product-advantages h3 {
  font-size: 20px;
  margin-bottom: 24px;
  color: var(--primary);
  text-align: center;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.advantage-list li {
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  transition: all var(--transition-base);
  position: relative;
  padding-left: 44px;
}

[data-theme="light"] .advantage-list li {
  background: rgba(0, 0, 0, 0.02);
}

.advantage-list li::before {
  content: '✓';
  position: absolute;
  left: 16px;
  top: 16px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #ffffff;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}

.advantage-list li:hover {
  background: rgba(233, 69, 96, 0.06);
  border-color: rgba(233, 69, 96, 0.2);
  transform: translateX(4px);
}

.advantage-list strong {
  color: var(--text-primary);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
  background: var(--bg-card-hover);
}

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

.solution-card h3 {
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--primary);
}

.solution-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.industry-applications {
  margin-top: 40px;
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.industry-applications:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

.industry-applications h3 {
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--primary);
}

.industry-applications p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
  background: var(--bg-card-hover);
}

.case-card h3 {
  font-size: 17px;
  margin-bottom: 16px;
  color: var(--primary);
  line-height: 1.5;
}

.case-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.testimonials {
  margin-top: 48px;
}

.testimonials h3 {
  font-size: 20px;
  margin-bottom: 24px;
  color: var(--text-primary);
  text-align: center;
}

.testimonial {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 16px;
  position: relative;
  transition: all var(--transition-base);
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 12px;
  left: 20px;
  font-size: 60px;
  color: var(--primary);
  opacity: 0.15;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.testimonial p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.testimonial cite {
  font-size: 13px;
  color: var(--primary);
  font-style: normal;
  font-weight: 600;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
  background: var(--bg-card-hover);
}

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

.article-card header {
  margin-bottom: 14px;
}

.article-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-card h3 a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.article-card h3 a:hover {
  color: var(--primary);
}

.article-card time {
  font-size: 12.5px;
  color: var(--text-muted);
  display: block;
}

.article-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
  margin-bottom: 16px;
}

.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
  align-self: flex-start;
}

.read-more:hover {
  gap: 8px;
  color: var(--primary-light);
}

.faq-list {
  max-width: 860px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: rgba(233, 69, 96, 0.3);
}

.faq-item.active {
  border-color: rgba(233, 69, 96, 0.4);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  gap: 16px;
}

.faq-question:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.04);
}

.faq-arrow {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--text-muted);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}

.faq-item.active .faq-answer {
  max-height: 600px;
  opacity: 1;
  padding: 0 24px 24px;
}

.faq-answer p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.85;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.howto-content {
  max-width: 860px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.howto-step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.howto-step::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.howto-step:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.howto-step:hover::before {
  opacity: 1;
}

.howto-step h3 {
  font-size: 19px;
  margin-bottom: 16px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.howto-step h3::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.6);
}

.howto-step p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.85;
}

.howto-list {
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.howto-list li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 48px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.howto-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(233, 69, 96, 0.3);
}

.howto-list strong {
  color: var(--text-primary);
}

.howto-notes,
.howto-errors {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.howto-notes li,
.howto-errors li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.howto-notes li::before {
  content: '※';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 16px;
}

.howto-errors li::before {
  content: '!';
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(233, 69, 96, 0.15);
  color: var(--primary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}

.howto-errors strong {
  color: var(--primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.contact-info,
.contact-service {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-base);
}

.contact-info:hover,
.contact-service:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

.contact-info h3,
.contact-service h3 {
  font-size: 20px;
  margin-bottom: 24px;
  color: var(--primary);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.contact-info address {
  font-style: normal;
}

.contact-info p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.contact-info strong {
  color: var(--text-primary);
  flex-shrink: 0;
}

.contact-info a {
  color: var(--primary);
  word-break: break-all;
}

.contact-info a:hover {
  text-decoration: underline;
}

.contact-service ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.contact-service ul li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-service ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(233, 69, 96, 0.15);
  color: var(--primary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}

.contact-service h3:nth-of-type(2) {
  margin-top: 28px;
}

.contact-service p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.sitemap-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.sitemap-list > li {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-base);
}

.sitemap-list > li:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

.sitemap-list > li > a {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  transition: color var(--transition-fast);
}

.sitemap-list > li > a:hover {
  color: var(--primary);
}

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

.sitemap-list ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  display: block;
  padding: 4px 0;
  transition: all var(--transition-fast);
}

.sitemap-list ul li a:hover {
  color: var(--primary);
  padding-left: 6px;
}

.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 48px;
}

.friend-links li a {
  display: inline-block;
  padding: 10px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.friend-links li a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(233, 69, 96, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.2);
}

.links-note {
  text-align: center;
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

#site-footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-col h3 {
  font-size: 16px;
  margin-bottom: 20px;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 12px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-col p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 13.5px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: inline-block;
}

.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-col address {
  font-style: normal;
}

.footer-col address p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-bottom {
  margin-top: 48px;
  padding: 28px 20px;
  border-top: 1px solid var(--border-color);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.footer-bottom p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 8px;
  text-align: center;
}

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

#copyright {
  font-size: 13px;
  color: var(--text-secondary);
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(233, 69, 96, 0.6);
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1200px) {
  .nav-link {
    padding: 8px 10px;
    font-size: 13px;
  }

  .search-form input {
    width: 120px;
  }

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

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

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

@media (max-width: 992px) {
  :root {
    --header-height: 64px;
  }

  #main-nav {
    display: none;
  }

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

  .search-form {
    display: none;
  }

  .hero-slider {
    height: 440px;
  }

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

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

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

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

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

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

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .hero-slider {
    height: 400px;
  }

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

  .hero-subtitle {
    font-size: 14px;
    margin-bottom: 24px;
  }

  .btn {
    padding: 11px 24px;
    font-size: 14px;
  }

  .slider-prev,
  .slider-next {
    width: 38px;
    height: 38px;
  }

  .slider-prev {
    left: 12px;
  }

  .slider-next {
    right: 12px;
  }

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

  .stat-item {
    padding: 20px 12px;
  }

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

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

  .about-card,
  .product-card,
  .solution-card,
  .case-card,
  .article-card,
  .howto-step {
    padding: 24px;
  }

  .product-advantages,
  .industry-applications,
  .team-intro {
    padding: 24px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 14px;
  }

  .faq-item.active .faq-answer {
    padding: 0 18px 18px;
  }

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

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

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

  .contact-info,
  .contact-service {
    padding: 24px;
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-tagline {
    font-size: 10px;
  }

  .logo-area svg {
    width: 34px;
    height: 34px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-slider {
    height: 360px;
  }

  .hero-title {
    font-size: 21px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .stat-number {
    font-size: 22px;
  }

  .stat-label {
    font-size: 11px;
  }

  .section-title {
    font-size: 20px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .testimonial {
    padding: 20px 24px;
  }

  .howto-list li {
    padding-left: 40px;
  }

  .howto-list li::before {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .scroll-reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  #site-header,
  .back-to-top,
  .hero-slider,
  .slider-prev,
  .slider-next,
  .slider-dots {
    display: none;
  }

  body {
    background: #ffffff;
    color: #000000;
  }

  .section {
    padding: 20px 0;
  }
}