:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --card: #ffffff;
  --muted: #475569;
  --text: #0f172a;
  --primary: #7c3aed;
  --primary-2: #22d3ee;
  --accent: #10b981;
  --border: #eef2f7;
  --shadow: 0 10px 30px rgba(17,24,39,0.08);
}
* { box-sizing: border-box }
html, body { height: 100% }
html { scroll-behavior: smooth }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block }
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(6px);
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(17,24,39,0.04);
  transition: box-shadow .2s ease, background .2s ease;
}
.header-wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 72px; transition: height .2s ease }
.site-header.scrolled .header-wrap { height: 62px }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700 }
.logo { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: var(--shadow); color: #fff }
.brand-name { letter-spacing: 0.2px }

.nav { display: flex; align-items: center; gap: 16px }
.nav-list { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0 }
.nav-list a { color: #64748b; text-decoration: none; font-weight: 500 }
.nav-list a:hover, .nav-list a.active { color: var(--text) }
.nav-toggle { display: none; border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 8px 10px; border-radius: 8px }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 18px; border-radius: 12px; font-weight: 600; text-decoration: none; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease }
.btn-primary { color: white; background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: 0 10px 25px rgba(124,58,237,.25) }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 15px 28px rgba(124,58,237,.40) }
.btn-secondary { color: var(--text); background: var(--card); border-color: var(--border) }
.btn-secondary:hover { transform: translateY(-2px); border-color: var(--primary-2) }
.btn:focus-visible { outline: 2px solid var(--primary-2); outline-offset: 2px }

.hero { position: relative; padding: 96px 0 40px; background:
  radial-gradient(1000px 500px at 10% -20%, rgba(124,58,237,0.08), transparent 60%),
  radial-gradient(700px 400px at 90% 0%, rgba(34,211,238,0.08), transparent 50%);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center }
.hero-title { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.05; margin: 0 0 14px; letter-spacing: -0.5px }
.hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.2rem); color: var(--muted); margin: 0 0 24px }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0 22px }
.hero-trust { display: flex; flex-wrap: wrap; gap: 16px; color: #6b7280 }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px }
.svg-hero { width: 100%; height: auto; border-radius: 16px; border: 1px solid var(--border); box-shadow: var(--shadow); animation: float 6s ease-in-out infinite }
.section-separator { color: #f3f4f6 }
.section-separator svg { display: block; width: 100%; height: 64px }

.section { padding: 72px 0 }
.section-title { font-size: clamp(1.6rem, 3vw, 2rem); margin: 0 0 8px }
.section-subtitle { color: var(--muted); max-width: 800px; margin: 0 0 30px }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease }
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(17,24,39,0.10); border-color: rgba(34,211,238,.4) }
.feature h3 { margin: 0 0 8px; font-size: 1.1rem }
.feature p { color: var(--muted); margin: 0 }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px }

.demo { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%) }
.demo-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center }
.demo-actions { display: flex; gap: 12px; margin-top: 16px }
.media-placeholder { border-radius: 16px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow) }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px }
.price h3 { margin: 0 0 8px }
.price-value { font-size: 1.6rem; font-weight: 800; margin: 0 0 14px; letter-spacing: -0.3px }
.price-features { list-style: none; padding: 0; margin: 0 0 16px; color: var(--muted) }
.price-features li { padding: 6px 0 }
.price.featured { position: relative; border-image: linear-gradient(135deg, var(--primary), var(--primary-2)) 1; border-width: 1px; border-style: solid }
.badge { position: absolute; top: -12px; right: 16px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: white; font-size: 12px; font-weight: 700; padding: 6px 10px; border-radius: 8px; box-shadow: var(--shadow) }
.price:hover { transform: translateY(-3px) }

.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px }
.testimonial p { margin: 0 0 10px }
.testimonial .author { color: var(--muted) }

.faq .faq-list { display: grid; gap: 12px }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px }
.faq-item summary { cursor: pointer; font-weight: 600 }
.faq-item[open] { outline: 1px solid rgba(124,58,237,.25) }
.faq-item p { color: var(--muted) }

.cta-banner { padding: 64px 0; background: radial-gradient(600px 300px at 20% 50%, rgba(124,58,237,0.12), transparent 60%), radial-gradient(700px 300px at 80% 50%, rgba(34,211,238,0.12), transparent 60%) }
.cta-wrap { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 18px }

.site-footer { padding: 40px 0; border-top: 1px solid var(--border); background: var(--bg-soft) }
.footer-grid { display: grid; grid-template-columns: 1fr auto; align-items: center }
.footer-brand { display: grid; gap: 8px }
.footer-nav { display: flex; gap: 14px }
.footer-nav a { color: #6b7280; text-decoration: none }
.footer-nav a:hover { color: var(--text) }
.footnote { color: #6b7280; margin: 0 }

.modal { border: none; border-radius: 16px; padding: 0; background: var(--card); color: var(--text); box-shadow: var(--shadow) }
.modal[open]::backdrop { backdrop-filter: blur(6px); background: rgba(17,24,39,.25) }
.modal-content { display: grid; gap: 12px; padding: 20px }
.modal-content label { display: grid; gap: 6px }
.modal-content input, .modal-content textarea { background: var(--bg); border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 10px }
.modal-actions { display: flex; justify-content: end; gap: 10px; margin-top: 6px }

.reveal { opacity: 0; transform: translateY(10px); transition: opacity .6s ease, transform .6s ease }
.in-view { opacity: 1; transform: translateY(0) }

@keyframes float {
  0%   { transform: translateY(0) }
  50%  { transform: translateY(-6px) }
  100% { transform: translateY(0) }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important }
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr }
  .demo-wrap { grid-template-columns: 1fr }
  .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr 1fr }
}
@media (max-width: 640px) {
  .nav-toggle { display: inline-flex }
  .nav-list { position: absolute; top: 72px; right: 24px; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 12px; display: none; flex-direction: column; gap: 10px; box-shadow: var(--shadow) }
  .nav-list.open { display: flex }
  .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr }
  .header-wrap { height: 64px }
  .cta-wrap { grid-template-columns: 1fr; text-align: center }
}