:root {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --critical: #dc2626;
  --container: 1120px;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  font-size: 16px;
}

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

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.section {
  padding: 72px 0;
}

.section-muted {
  background: #fff;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(32px, 5.6vw, 52px);
}

h2 {
  font-size: clamp(26px, 4vw, 40px);
}

h3 {
  font-size: clamp(20px, 2.2vw, 24px);
}

p {
  margin: 0 0 12px;
}

ul {
  margin: 0;
  padding-left: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 250, 252, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.header-row {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.nav {
  display: flex;
  gap: 14px;
  margin-left: auto;
}

.nav a {
  color: var(--text-muted);
  font-weight: 500;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
}

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

.btn-secondary:hover {
  border-color: #cbd5e1;
  background: #f8fafc;
}

.hero {
  padding-top: 84px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: start;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}

.lead {
  font-size: 18px;
  color: var(--text-muted);
}

.micro {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 14px;
}

.cta-row,
.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.signal-mockup h2 {
  font-size: 22px;
}

.signal-mockup dl {
  margin: 0;
  display: grid;
  gap: 10px;
}

.signal-mockup dt {
  color: var(--text-muted);
  font-size: 14px;
}

.signal-mockup dd {
  margin: 4px 0 0;
  font-weight: 600;
}

.section-lead {
  color: var(--text-muted);
  max-width: 900px;
  margin-bottom: 18px;
  font-size: 18px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

th {
  background: #eff6ff;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.example {
  color: var(--text-muted);
  font-weight: 600;
}

.cta-inline {
  margin-top: 20px;
}

.pilot-card ul,
.price-card ul {
  margin: 14px 0 18px;
  display: grid;
  gap: 8px;
}

.price {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
}

.price-for {
  color: var(--text-muted);
  min-height: 48px;
}

.price-card {
  display: flex;
  flex-direction: column;
}

.price-card .btn {
  margin-top: auto;
}

.recommended {
  border: 2px solid var(--accent);
  background: #eff6ff;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  padding: 4px 10px;
  font-size: 13px;
  margin-bottom: 8px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  padding: 14px 16px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  color: var(--text-muted);
  margin-top: 10px;
}

.final-cta .card {
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  background: #fff;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-muted);
  font-size: 14px;
}

@media (max-width: 1024px) {
  .grid-5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .header-cta {
    display: none;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 40px);
  }

  .section {
    padding: 54px 0;
  }

  .lead,
  .section-lead {
    font-size: 16px;
  }

  .grid-2,
  .grid-4,
  .grid-5 {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    box-shadow: var(--shadow);
    margin-left: 0;
  }

  .nav.open {
    display: flex;
  }

  .btn {
    width: 100%;
    min-height: 48px;
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}