:root {
  color-scheme: light;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #111827;
  background: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(59,130,246,.12), transparent 28%), #f8fafc;
}

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(248,250,252,.92);
  border-bottom: 1px solid rgba(15,23,42,.08);
}

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

.brand .logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand p {
  margin: 0.25rem 0 0;
  color: #475569;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 999px;
  padding: 0.9rem 1.5rem;
  font-weight: 600;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 18px 40px rgba(37,99,235,0.18);
}

.btn-secondary {
  background: #e2e8f0;
  color: #0f172a;
}

.hero {
  padding: 5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: #2563eb;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1.05;
}

.hero-text {
  max-width: 44rem;
  margin: 1.5rem 0 2rem;
  color: #475569;
}

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

.hero-card {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 100%;
  max-width: 360px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: 40px;
  box-shadow: 0 36px 80px rgba(15,23,42,.08);
  padding: 1.25rem;
}

.phone-screen {
  background: #0f172a;
  border-radius: 32px;
  color: #f8fafc;
  padding: 2rem;
  min-height: 420px;
}

.phone-screen h2 {
  margin-top: 0;
}

.phone-screen ul {
  margin: 1.25rem 0 0;
  padding-left: 1.2rem;
}

.phone-screen li {
  margin-bottom: 0.75rem;
}

.section {
  padding: 4rem 0;
}

.features-section {
  padding-top: 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  margin: 0.5rem auto 0;
  font-size: clamp(2rem, 3vw, 2.75rem);
  max-width: 720px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: #fff;
  border: 1px solid rgba(15,23,42,.08);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 18px 40px rgba(15,23,42,.05);
}

.feature-card h3 {
  margin-top: 0;
}

.about-section {
  background: #ffffff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

.about-card {
  background: #2563eb;
  color: #fff;
  border-radius: 28px;
  padding: 2rem;
  box-shadow: 0 32px 60px rgba(37,99,235,.14);
}

.about-card h3 {
  margin-top: 0;
}

.benefits-list {
  list-style: disc;
  padding-left: 1.2rem;
  margin: 1.5rem 0 0;
  color: #334155;
}

.benefits-list li {
  margin-bottom: 0.75rem;
}

.feedback-section {
  background: #f1f5f9;
  text-align: center;
}

.feedback-content {
  max-width: 600px;
  margin: 0 auto;
}

.feedback-content h2 {
  margin-bottom: 1rem;
}

.feedback-content p {
  margin-bottom: 2rem;
  color: #475569;
}

.form-container {
  max-width: 640px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15,23,42,.08);
}

.form-container iframe {
  display: block;
  width: 100%;
  border: none;
}

.site-footer {
  padding: 2rem 0;
  background: rgba(15,23,42,.03);
}

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

.site-footer p,
.site-footer a {
  margin: 0;
  color: #475569;
}

@media (max-width: 860px) {
  .hero-grid,
  .about-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .header-inner,
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .phone-screen {
    min-height: 360px;
  }
}