/* Reset and base styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --secondary: #10B981;
  --text: #1F2937;
  --text-light: #6B7280;
  --bg: #FFFFFF;
  --bg-alt: #F9FAFB;
  --border: #E5E7EB;
  --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);
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

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

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

a:hover {
  text-decoration: underline;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo svg {
  width: 40px;
  height: 40px;
  color: var(--primary);
}

nav {
  display: flex;
  gap: 32px;
}

nav a {
  color: var(--text-light);
  font-weight: 500;
  transition: color 0.2s;
  text-decoration: none;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn svg {
  width: 28px;
  height: 28px;
  color: var(--text);
}

/* Hero section */
.hero {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  color: white;
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero p {
  font-size: 20px;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto 40px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

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

.btn-primary:hover {
  background: #059669;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

/* Sections */
section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.feature-card {
  background: var(--bg);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card svg {
  width: 48px;
  height: 48px;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  margin-top: 48px;
}

.stat-item h3 {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-item p {
  color: var(--text-light);
  font-size: 18px;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--bg);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.testimonial-card p {
  font-style: italic;
  margin-bottom: 20px;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-author svg {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-alt);
  padding: 8px;
}

.testimonial-author span {
  font-weight: 600;
}

/* CTA section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 100%);
  color: white;
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: 36px;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* CTA Button */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 40px;
  border-radius: var(--radius);
  font-size: 18px;
  font-weight: 700;
  background: var(--secondary);
  color: white;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

.cta-btn:hover {
  background: #059669;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-floating {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  padding: 16px 24px;
  border-radius: 50px;
  box-shadow: var(--shadow-lg);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* FAQ Accordion */
.faq-item {
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.faq-question {
  width: 100%;
  padding: 24px;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  text-align: left;
  color: var(--text);
}

.faq-question svg {
  width: 24px;
  height: 24px;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.faq-question[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 24px;
  color: var(--text-light);
  line-height: 1.8;
}

/* Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 16px;
  transition: border-color 0.2s;
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
footer {
  background: var(--text);
  color: white;
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.footer-col h4 {
  font-size: 18px;
  margin-bottom: 20px;
}

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

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

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
}

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.blog-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.blog-card:hover {
  transform: translateY(-4px);
}

.blog-card-content {
  padding: 24px;
}

.blog-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.blog-card p {
  color: var(--text-light);
  margin-bottom: 20px;
}

.blog-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
}

/* Article */
.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 32px;
  margin: 48px 0 24px;
}

.article-content h3 {
  font-size: 24px;
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-meta {
  color: var(--text-light);
  margin-bottom: 32px;
  font-size: 14px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  color: var(--primary);
  font-weight: 600;
}

/* Responsive */
   @media (max-width: 768px) {
     .hero h1 {
       font-size: 32px;
     }

     .hero p {
       font-size: 16px;
     }

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

     nav {
       display: none;
       position: absolute;
       top: 100%;
       left: 0;
       right: 0;
       background: var(--bg);
       flex-direction: column;
       padding: 20px;
       gap: 16px;
       border-bottom: 1px solid var(--border);
       box-shadow: var(--shadow);
     }

     nav.active {
       display: flex;
     }

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

     .section-title {
       font-size: 28px;
     }

     .cta-floating {
       bottom: 16px;
       right: 16px;
       padding: 14px 20px;
       font-size: 14px;
     }
   }

hr {
  margin: 64px 0;
  border: none;
  border-top: 1px solid var(--border);
}

/* Utility classes */
.text-center {
  text-align: center;
}

.mt-48 {
  margin-top: 48px;
}

.w-full {
  width: 100%;
}

.list-unstyled {
  list-style: none;
  padding: 0;
}

.mb-16 {
  margin-bottom: 16px;
}

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

.font-bold {
  font-weight: 600;
}

.text-muted {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.gap-12 {
  gap: 12px;
}

.fw-600 {
  font-weight: 600;
}

.fs-14 {
  font-size: 14px;
}

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

.w-full {
  width: 100%;
}

/* Layout utilities */
.d-flex {
  display: flex;
}

.align-items-center {
  align-items: center;
}

.gap-8 {
  gap: 8px;
}

.gap-12 {
  gap: 12px;
}

.gap-24 {
  gap: 24px;
}

.gap-32 {
  gap: 32px;
}

.gap-48 {
  gap: 48px;
}

.d-grid {
  display: grid;
}

.flex-wrap {
  flex-wrap: wrap;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

/* Spacing utilities */
.mt-32 {
  margin-top: 32px;
}

.mt-48 {
  margin-top: 48px;
}

.mt-64 {
  margin-top: 64px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-20 {
  margin-bottom: 20px;
}

.mb-32 {
  margin-bottom: 32px;
}

.mb-48 {
  margin-bottom: 48px;
}

/* Font size utilities */
.fs-14 {
  font-size: 14px;
}

.fs-20 {
  font-size: 20px;
}

.fs-24 {
  font-size: 24px;
}

.fs-32 {
  font-size: 32px;
}

/* Spacing */
.mb-12 {
  margin-bottom: 12px;
}

.mt-32 {
  margin-top: 32px;
}

.pb-24 {
  padding-bottom: 24px;
}

/* Text utilities */
.text-center {
  text-align: center;
}

.font-600 {
  font-weight: 600;
}

.font-700 {
  font-weight: 700;
}

.text-white-70 {
  color: rgba(255, 255, 255, 0.7);
}

/* Icon utilities */
.icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.icon-sm {
  width: 20px;
  height: 20px;
}

/* List utilities */
.list-unstyled {
  list-style: none;
  padding: 0;
}

/* SVG specific */
svg {
  flex-shrink: 0;
}

/* Max width utility */
.max-width-800 {
  max-width: 800px;
  margin: 0 auto;
}

/* For feature card step numbers */
.step-number,
.step-circle {
  background: var(--primary);
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 24px;
  flex-shrink: 0;
}