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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.05);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1140px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

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

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

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

.logo-icon {
  flex-shrink: 0;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

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

.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.menu-toggle:hover {
  background: var(--bg-alt);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  letter-spacing: 0.01em;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-stat-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Section styles */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* How It Works */
.how-it-works {
  padding: 80px 0;
  background: var(--bg-alt);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  background: var(--bg);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  position: relative;
  transition: all var(--transition);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.1em;
}

.step-icon {
  margin-bottom: 20px;
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.step-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Features */
.features {
  padding: 80px 0;
}

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

.feature-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Stats */
.stats {
  padding: 80px 0;
  background: var(--primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stat-card {
  text-align: center;
  color: #fff;
}

.stat-icon {
  margin-bottom: 16px;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.85;
}

/* Testimonials */
.testimonials {
  padding: 80px 0;
  background: var(--bg-alt);
}

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

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

.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

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

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.testimonial-name {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
}

.testimonial-role {
  display: block;
  font-size: 0.82rem;
  color: var(--text-light);
}

/* Pricing */
.pricing {
  padding: 80px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: flex-start;
}

.pricing-card {
  padding: 40px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
  position: relative;
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pricing-card-featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary);
  background: var(--primary-light);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.pricing-currency {
  font-size: 1.25rem;
  vertical-align: super;
  font-weight: 600;
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  font-weight: 500;
}

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

.pricing-btn {
  width: 100%;
}

/* FAQ */
.faq {
  padding: 80px 0;
  background: var(--bg-alt);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  gap: 16px;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

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

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

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

.faq-item.open .faq-answer {
  max-height: 400px;
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Keywords Cloud */
.keywords {
  padding: 80px 0;
}

.keywords-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: 720px;
  margin: 0 auto;
}

.keyword {
  display: inline-block;
  padding: 8px 20px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}

.keyword:hover {
  background: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

/* CTA */
.cta {
  padding: 80px 0;
  background: var(--primary-light);
}

.cta-content {
  text-align: center;
}

.cta-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-desc {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Footer */
.footer {
  background: var(--text);
  color: #fff;
  padding-top: 56px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  opacity: 0.7;
  line-height: 1.7;
  max-width: 320px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

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

.footer-col-title {
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin-bottom: 4px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

.footer-bottom-inner a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom-inner a:hover {
  color: #fff;
}

/* About Page */
.page-hero {
  padding: 80px 0 60px;
  background: var(--bg-alt);
}

.page-hero-content {
  text-align: center;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.about-story {
  padding: 80px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 24px;
}

.about-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-visual svg {
  max-width: 100%;
  height: auto;
}

.about-mission {
  padding: 80px 0;
  background: var(--bg-alt);
}

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

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

.mission-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.mission-card svg {
  margin-bottom: 20px;
}

.mission-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.mission-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-values {
  padding: 80px 0;
}

.values-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.value-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.value-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  flex-shrink: 0;
  min-width: 48px;
}

.value-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-item p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Contact Page */
.contact-section {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: flex-start;
}

.contact-info h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-detail svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.contact-detail a,
.contact-detail span {
  font-size: 0.95rem;
  color: var(--text);
}

.contact-form-wrapper {
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

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

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

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

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

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

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .page-title {
    font-size: 1.75rem;
  }

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

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

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .contact-form-wrapper {
    padding: 24px;
  }

  .value-item {
    flex-direction: column;
    gap: 8px;
  }

  .menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }
}

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

  .hero {
    padding: 60px 0 40px;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .hero-stat-num {
    font-size: 1.4rem;
  }

  .pricing-card {
    padding: 28px 20px;
  }

  .feature-card {
    padding: 24px 20px;
  }
}