:root {
  --primary: #5c7cfa;
  --primary-dark: #4c63d3;
  --accent: #74c0fc;
  --text: #1f2a37;
  --muted: #6b7280;
  --bg: #f7f9fc;
  --white: #fff;
  --border: #e5e7eb;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background-color: var(--white);
}

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

body {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.7);
  z-index: 10;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.1rem;
}

nav {
  display: flex;
  gap: 1.5rem;
  font-weight: 500;
}

nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.btn {
  border: none;
  border-radius: 999px;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(92, 124, 250, 0.35);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 15px 30px rgba(92, 124, 250, 0.3);
}

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

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

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

.btn-ghost {
  background: rgba(92, 124, 250, 0.1);
  color: var(--primary);
}

.hero {
  padding: 4rem 0 6rem;
  background: radial-gradient(circle at top right, rgba(92, 124, 250, 0.16), transparent),
    var(--white);
}

.hero-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  margin: 0.75rem 0;
  line-height: 1.2;
}

.hero-text p {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.eyebrow {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.metrics {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.metrics strong {
  font-size: 1.8rem;
  display: block;
}

.hero-card {
  background: var(--white);
  border-radius: 28px;
  padding: 2rem;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.12);
}

.section {
  padding: 4rem 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin: 0.5rem 0;
  font-size: clamp(1.75rem, 3.8vw, 2.6rem);
}

.section-header p {
  color: var(--muted);
  margin: 0 auto;
  max-width: 640px;
}

.feature-grid,
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.feature-grid article,
.testimonial-grid article,
.scene-cards article,
.security-card,
.qr-card {
  background: var(--white);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.08);
}

.feature-grid .icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.security {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.security-card h3 {
  font-size: 2.5rem;
  margin: 0 0 0.5rem;
}

.security-card ol {
  padding-left: 1.1rem;
}

.scenes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.scene-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.download {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.download-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.qr-card {
  text-align: center;
}

.qr-placeholder {
  width: 160px;
  height: 160px;
  margin: 0 auto 1rem;
  background: repeating-linear-gradient(
      45deg,
      rgba(92, 124, 250, 0.12),
      rgba(92, 124, 250, 0.12) 10px,
      rgba(92, 124, 250, 0.22) 10px,
      rgba(92, 124, 250, 0.22) 20px
    ),
    #fff;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.2em;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.faq-question {
  width: 100%;
  background: var(--white);
  border: none;
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 1.5rem;
  color: var(--muted);
}

.faq-item.active .faq-answer {
  padding-bottom: 1rem;
  max-height: 200px;
}

.site-footer {
  background: #0f172a;
  color: #e2e8f0;
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
}

.site-footer h4 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  color: #fff;
}

.site-footer a {
  color: #cbd5f5;
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.copyright {
  text-align: center;
  margin-top: 2rem;
  color: #94a3b8;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  nav {
    display: none;
  }

  .hero {
    padding-top: 6rem;
  }

  .metrics {
    flex-direction: column;
  }
}