/* ========================================
   AI全自动获客工具平台 - 主样式表
   ======================================== */

/* CSS Variables */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #06b6d4;
  --accent: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --light: #f1f5f9;
  --white: #ffffff;
  --gradient-1: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --gradient-2: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
  --gradient-3: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
}


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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--dark);
  color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--white);
}

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-1);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  color: var(--white);
}

.btn-secondary {
  background: var(--dark-3);
  color: var(--white);
  border: 1px solid var(--gray);
}

.btn-secondary:hover {
  background: var(--gray);
  color: var(--white);
}

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

.btn-accent:hover {
  background: #fbbf24;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-light);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

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

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

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.mobile-menu-btn span {
  width: 25px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--primary-light);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  color: var(--gray-light);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  animation: fadeInUp 0.8s ease 0.4s both;
}

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

.hero-stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--gray);
  margin-top: 0.25rem;
}

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

/* Section Common */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-dark {
  background: var(--dark-2);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--gray-light);
  font-size: 1.125rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.feature-card p {
  color: var(--gray-light);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Product Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.product-card {
  background: linear-gradient(145deg, var(--dark-2) 0%, var(--dark) 100%);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
}

.product-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.product-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
  box-shadow: 0 30px 60px rgba(99, 102, 241, 0.2);
}

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

.product-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.product-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.product-card p {
  color: var(--gray-light);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.product-features {
  position: relative;
  z-index: 1;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--gray-light);
  font-size: 0.9375rem;
}

.product-features li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
}

/* Pain Points */
.pain-points {
  background: var(--dark-2);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.pain-card {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.pain-card::before {
  content: '✗';
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 30px;
  height: 30px;
  background: rgba(239, 68, 68, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger);
  font-weight: 700;
  font-size: 0.875rem;
}

.pain-card h4 {
  color: var(--danger);
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.pain-card p {
  color: var(--gray-light);
  font-size: 0.9375rem;
}

/* Solution */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.solution-card {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s ease;
}

.solution-card:hover {
  background: rgba(16, 185, 129, 0.1);
  transform: translateY(-5px);
}

.solution-icon {
  width: 50px;
  height: 50px;
  background: rgba(16, 185, 129, 0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.solution-card h4 {
  color: var(--success);
  margin-bottom: 0.75rem;
}

.solution-card p {
  color: var(--gray-light);
  font-size: 0.9375rem;
}

/* How It Works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--gradient-1);
  z-index: 0;
}

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

.step-number {
  width: 80px;
  height: 80px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.step-card h4 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.step-card p {
  color: var(--gray-light);
  font-size: 0.9375rem;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 5rem;
  font-family: Georgia, serif;
  color: var(--primary);
  opacity: 0.2;
  line-height: 1;
}

.testimonial-content {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--light);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.testimonial-info h5 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.testimonial-info span {
  font-size: 0.875rem;
  color: var(--gray);
}

/* CTA Section */
.cta-section {
  background: var(--gradient-1);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::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='0.05'%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");
}

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

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

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

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

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.5rem;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.0625rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: rgba(255,255,255,0.02);
}

.faq-icon {
  width: 30px;
  height: 30px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

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

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.5rem;
  color: var(--gray-light);
  line-height: 1.8;
}

/* Footer */
.footer {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--gray-light);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.footer-column h4 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--gray-light);
  font-size: 0.9375rem;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--gray);
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--dark-2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-light);
  transition: all 0.3s ease;
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

/* WeChat Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 400px;
  width: 90%;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 1.5rem;
}

.modal-content h3 {
  margin-bottom: 0.75rem;
}

.modal-content p {
  color: var(--gray-light);
  margin-bottom: 1.5rem;
}

.wechat-id-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--dark);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.wechat-id-box span {
  flex: 1;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  font-family: monospace;
}

.copy-btn {
  background: var(--gradient-1);
  border: none;
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.copy-btn:hover {
  transform: scale(1.05);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--white);
}

/* Articles */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.article-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--gradient-1);
}

.article-content {
  padding: 1.5rem;
}

.article-date {
  font-size: 0.875rem;
  color: var(--gray);
  margin-bottom: 0.75rem;
}

.article-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  transition: color 0.3s ease;
}

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

.article-card p {
  color: var(--gray-light);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-light);
  font-weight: 500;
}

.article-link:hover {
  gap: 0.75rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
}

.pagination a,
.pagination span {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  color: var(--gray-light);
  font-weight: 500;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.pagination .active {
  background: var(--gradient-1);
  border-color: var(--primary);
  color: var(--white);
}

/* City Selector */
.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.75rem;
}

.city-tag {
  padding: 0.5rem 1rem;
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  text-align: center;
  color: var(--gray-light);
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.city-tag:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* Stats Section */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
}

.stat-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--gray-light);
  margin-top: 0.5rem;
}

/* Trust Badges */
.trust-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-light);
}

.trust-icon {
  width: 40px;
  height: 40px;
  background: rgba(16, 185, 129, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--dark);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  
  .nav.active {
    display: flex;
  }
  
  .header-cta .btn {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .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);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .products-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .steps-grid::before {
    display: none;
  }
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--success);
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 500;
  z-index: 3000;
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--dark-3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* City Site Specific Styles */
.city-header {
  padding-top: 6rem;
  padding-bottom: 3rem;
  text-align: center;
}

.city-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--primary-light);
  margin-bottom: 1rem;
}

/* Logo Banner */
.logo-banner {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
}

.logo-item {
    padding: 1.5rem 2.5rem;
    background: linear-gradient(145deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    font-weight: 600;
    color: var(--gray-light);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 24px -8px rgba(0,0,0,0.3);
}

.logo-item:hover {
    transform: translateY(-4px) scale(1.02);
    background: linear-gradient(145deg, rgba(99,102,241,0.2) 0%, rgba(6,182,212,0.1) 100%);
    border-color: rgba(99,102,241,0.3);
    box-shadow: 0 12px 40px -12px rgba(99,102,241,0.4);
    color: var(--primary-light);
}

.logo-item svg {
    width: 32px;
    height: 32px;
}

.logo-item span {
    font-weight: 600;
}

/* Shimmer Animation */
@keyframes shimmer {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* Testimonial Badge & Result */
.testimonial-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.8125rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 1rem;
}

.testimonial-result {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  color: var(--success);
  font-size: 0.9375rem;
}

.testimonial-result strong {
  color: var(--white);
}

/* CTA Badge */
.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  font-size: 0.9375rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 1.5rem;
  animation: pulse 2s infinite;
}

/* Floating CTA */
.floating-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.floating-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background: var(--gradient-1);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
  transition: all 0.3s ease;
  text-decoration: none;
}

.floating-btn:hover {
  transform: scale(1.05) translateY(-3px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.5);
}

@media (max-width: 768px) {
  .floating-cta {
    bottom: 1rem;
    right: 1rem;
  }
  
  .floating-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
  }
  
  .logo-banner {
    gap: 1rem;
  }
  
  .logo-item {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
  }
}

/* Comparison Table */
.comparison-table-container {
  background: var(--dark-2);
  border-radius: var(--radius-xl);
  padding: 1rem;
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.comparison-header {
  padding: 1.25rem 1rem;
  text-align: center;
  font-weight: 700;
  font-size: 1.125rem;
  border-bottom: 2px solid rgba(255,255,255,0.1);
}

.comparison-header.traditional {
  background: rgba(239, 68, 68, 0.1);
  color: var(--gray-light);
}

.comparison-header.ai {
  background: var(--gradient-1);
  color: var(--white);
}

.comparison-label {
  padding: 1rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  background: rgba(255,255,255,0.02);
}

.comparison-value {
  padding: 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.comparison-value.traditional {
  color: var(--gray);
}

.comparison-value.ai {
  color: var(--primary-light);
  font-weight: 600;
}

/* Reviews Grid */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

.review-card {
  background: linear-gradient(145deg, var(--dark-2) 0%, var(--dark) 100%);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all 0.3s ease;
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.review-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
}

.review-info {
  flex: 1;
}

.review-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.review-stars {
  color: #fbbf24;
  font-size: 1rem;
  letter-spacing: 1px;
}

.review-content {
  color: var(--gray-light);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.review-metrics {
  display: flex;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.review-metric {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.review-metric-label {
  font-size: 0.875rem;
  color: var(--gray);
}

.review-metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 768px) {
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .comparison-table-container {
    padding: 0.5rem;
  }
  
  .comparison-header,
  .comparison-label,
  .comparison-value {
    padding: 0.75rem 0.5rem;
    font-size: 0.875rem;
  }
}