@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --primary: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --accent: #06b6d4;
  --accent-light: #67e8f9;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-1: linear-gradient(135deg, #1e40af 0%, #06b6d4 100%);
  --gradient-2: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  --gradient-3: linear-gradient(135deg, #1e3a8a 0%, #0e7490 100%);
  --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #1e40af 100%);
  --border: rgba(148, 163, 184, 0.1);
  --border-hover: rgba(148, 163, 184, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-darker);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: 0 4px 20px rgba(30, 64, 175, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(30, 64, 175, 0.6);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  border-color: var(--primary-light);
  background: rgba(59, 130, 246, 0.1);
}

.btn-large {
  padding: 18px 42px;
  font-size: 16px;
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(2, 6, 23, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.125rem;
  color: white;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

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

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 15px;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: white;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: width 0.3s ease;
}

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

/* AI提效 醒目导航样式 */
.nav-link-ai {
  color: #f59e0b !important;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link-ai::before {
  content: '🔥';
  font-size: 14px;
  animation: navAiPulse 0.8s ease-in-out infinite alternate;
}

.nav-link-ai::after {
  background: linear-gradient(90deg, #f59e0b, #ef4444) !important;
}

@keyframes navAiPulse {
  0% { transform: scale(1); filter: brightness(1); }
  100% { transform: scale(1.25); filter: brightness(1.3); }
}

.nav-link-ai:hover {
  color: #fbbf24 !important;
  text-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}

.nav-cta {
  padding: 10px 24px;
  font-size: 14px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(30, 64, 175, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(30, 64, 175, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 999px;
  font-size: 14px;
  color: var(--primary-light);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 50%, #67e8f9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .cursor {
  display: inline-block;
  color: #67e8f9;
  -webkit-text-fill-color: #67e8f9;
  animation: cursorBlink 0.8s step-end infinite;
  font-weight: 300;
  margin-left: 2px;
}

.hero-title .cursor.done {
  display: none;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 80px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: rgba(59, 130, 246, 0.15);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: white;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  transition: all 0.4s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.2));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.service-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: white;
  position: relative;
  z-index: 1;
}

.service-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex: 1;
  position: relative;
  z-index: 1;
}

.service-link {
  color: var(--primary-light);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
  position: relative;
  z-index: 1;
}

.service-link:hover {
  gap: 10px;
}

/* AI Banner */
.ai-banner {
  background: linear-gradient(135deg, #1e3a8a 0%, #0e7490 100%);
  border-radius: 24px;
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.ai-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(6, 182, 212, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.ai-banner-content {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 500px;
}

.ai-banner-title {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 16px;
  color: white;
}

.ai-banner-desc {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 28px;
  font-size: 1.0625rem;
}

.ai-banner-visual {
  width: 280px;
  height: 180px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  z-index: 1;
}

/* Case Section */
.case-section {
  background: var(--bg-darker);
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s ease;
}

.case-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
}

.case-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  overflow: hidden;
}

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

.case-content {
  padding: 28px;
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary-light);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: white;
}

.case-desc {
  color: var(--text-secondary);
  font-size: 14px;
}

/* News Section */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.news-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
}

.news-date {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.news-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: white;
  line-height: 1.5;
}

.news-excerpt {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  margin-bottom: 20px;
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--gradient-1);
  color: white;
  border-color: transparent;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 14px;
}

/* Page Hero */
.page-hero {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 50% 0%, rgba(30, 64, 175, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

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

.page-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Service Detail */
.service-category {
  margin-bottom: 80px;
}

.service-category:last-child {
  margin-bottom: 0;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.category-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.category-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.service-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.3s ease;
}

.service-item:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
}

.service-item-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-item-title::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
}

.service-item-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* Process */
.process-section {
  background: var(--bg-darker);
}

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

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--primary-light);
  margin: 0 auto 20px;
  transition: all 0.4s ease;
}

.process-step:hover .step-number {
  background: var(--gradient-1);
  color: white;
  border-color: transparent;
  transform: scale(1.05);
}

.step-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Portfolio Filters */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  font-size: 14px;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--gradient-1);
  color: white;
  border-color: transparent;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.portfolio-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s ease;
  cursor: pointer;
}

.portfolio-item:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.portfolio-image {
  height: 240px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}

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

.portfolio-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.4) 100%);
}

.portfolio-info {
  padding: 28px;
}

.portfolio-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary-light);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.portfolio-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.portfolio-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
}

.portfolio-stats {
  display: flex;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.portfolio-stat {
  flex: 1;
  text-align: center;
}

.portfolio-stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-light);
}

.portfolio-stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* News Page */
.news-categories {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.news-section {
  margin-bottom: 80px;
}

.news-section:last-child {
  margin-bottom: 0;
}

.news-section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.news-section-title::before {
  content: '';
  width: 4px;
  height: 32px;
  background: var(--gradient-1);
  border-radius: 2px;
}

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

.news-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.news-item:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateX(8px);
}

.news-item-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  border-right: 1px solid var(--border);
  padding-right: 24px;
}

.news-item-day {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
}

.news-item-month {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

.news-item-content {
  flex: 1;
}

.news-item-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.news-item-excerpt {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 24px 28px;
  background: none;
  border: none;
  color: white;
  font-size: 1.0625rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: inherit;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: rgba(59, 130, 246, 0.1);
}

.faq-icon {
  width: 28px;
  height: 28px;
  background: rgba(59, 130, 246, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--gradient-1);
}

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

.faq-answer-inner {
  padding: 0 28px 24px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* AI Landing Page */
.ai-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0e7490 100%);
  min-height: 90vh;
  position: relative;
  overflow: hidden;
}

.ai-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(6, 182, 212, 0.2) 0%, transparent 50%);
  z-index: 0;
}

.ai-hero-content {
  position: relative;
  z-index: 1;
  padding: 160px 0 100px;
  text-align: center;
}

.ai-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: rgba(6, 182, 212, 0.2);
  border: 1px solid rgba(6, 182, 212, 0.4);
  border-radius: 999px;
  font-size: 14px;
  color: var(--accent-light);
  margin-bottom: 32px;
}

.ai-hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.ai-hero-title .highlight {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.ai-hero-subtitle {
  font-size: 1.375rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 700px;
  margin: 0 auto 40px;
}

/* Comparison */
.comparison-section {
  background: var(--bg-darker);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
}

.comparison-card.traditional {
  border-color: rgba(239, 68, 68, 0.2);
}

.comparison-card.ai {
  border-color: rgba(59, 130, 246, 0.3);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(30, 64, 175, 0.2) 100%);
}

.comparison-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.comparison-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.comparison-card.traditional .comparison-icon {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.comparison-card.ai .comparison-icon {
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary-light);
}

.comparison-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: white;
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.comparison-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.comparison-item:last-child {
  border-bottom: none;
}

.comparison-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  margin-top: 2px;
}

.comparison-card.traditional .comparison-check {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.comparison-card.ai .comparison-check {
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary-light);
}

.comparison-text {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* AI Solutions */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  transition: all 0.4s ease;
}

.solution-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
}

.solution-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.2));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 24px;
}

.solution-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}

.solution-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* AI Stats */
.ai-stats-section {
  background: var(--bg-darker);
}

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

.ai-stat-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: all 0.4s ease;
}

.ai-stat-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-4px);
}

.ai-stat-value {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.ai-stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, #1e40af 0%, #06b6d4 100%);
  border-radius: 28px;
  padding: 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
}

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

.cta-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: white;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-btn {
  background: white;
  color: var(--primary);
  font-weight: 700;
  padding: 16px 40px;
  border-radius: 999px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.cta-btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

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

/* About Page */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image {
  height: 400px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
}

.about-content h2 {
  font-size: 2.25rem;
  font-weight: 900;
  margin-bottom: 24px;
  color: white;
}

.about-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1.0625rem;
}

.about-mission {
  display: flex;
  gap: 16px;
  margin-top: 32px;
}

.mission-item {
  flex: 1;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
}

.mission-item h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.mission-item p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.contact-item:hover {
  border-color: rgba(59, 130, 246, 0.4);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.contact-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 6px;
}

.contact-detail {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
}

.form-group {
  margin-bottom: 24px;
}

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

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 20px;
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: white;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(30, 64, 175, 0.4);
}

/* QR Codes */
.qr-section {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.qr-card {
  flex: 1;
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.qr-image {
  width: 160px;
  height: 160px;
  background: white;
  border-radius: 12px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.qr-image img {
  width: 100%;
  height: 100%;
}

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

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 40px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 20px;
}

.modal-close:hover {
  background: var(--bg-card);
  color: white;
  border-color: var(--border-hover);
}

/* Feedback form result modal */
.fb-modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 9999;
}

.fb-modal-mask.show {
  opacity: 1;
  visibility: visible;
}

.fb-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem 1.6rem;
  width: 90%;
  max-width: 360px;
  text-align: center;
  transform: translateY(12px);
  transition: transform 0.25s ease;
}

.fb-modal-mask.show .fb-modal-card {
  transform: translateY(0);
}

.fb-modal-icon {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.6rem;
}

.fb-modal-icon.ok { color: #34d399; }
.fb-modal-icon.err { color: #f87171; }

.fb-modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.fb-modal-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.fb-modal-btn {
  background: var(--gradient-1);
  color: #fff;
  border: none;
  padding: 0.6rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.fb-modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(30, 64, 175, 0.4);
}

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

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* Responsive */
@media (max-width: 968px) {
  .hero-title {
    font-size: 2.75rem;
  }
  
  .hero-stats {
    gap: 32px;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .about-intro {
    grid-template-columns: 1fr;
  }
  
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ai-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ai-banner {
    flex-direction: column;
    text-align: center;
    padding: 40px;
  }
  
  .ai-banner-visual {
    width: 200px;
    height: 140px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(2, 6, 23, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section {
    padding: 64px 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .page-title {
    font-size: 2.25rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  
  .cta-section {
    padding: 48px 32px;
  }
  
  .cta-title {
    font-size: 1.75rem;
  }
  
  .ai-hero-title {
    font-size: 2.25rem;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .ai-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .news-item {
    flex-direction: column;
  }
  
  .news-item-date {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-right: 0;
    padding-bottom: 16px;
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 12px;
  }
  
  .qr-section {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }
  
  .ai-stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
}