:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --ink: #111827;
  --muted: #4b5563;
  --brand: #0f4c81;
  --brand-2: #1672ba;
  --border: #dbe3ee;
  --ok: #0b7a42;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Avenir Next", Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top right, #e7f0fa 0%, var(--bg) 52%);
  color: var(--ink);
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1200px, 100% - 2rem);
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: #ffffffd9;
  backdrop-filter: blur(6px);
}

.nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.hero {
  padding: 4rem 0 2.5rem;
}

.eyebrow {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 0.35rem 0 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
}

.hero-copy {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 62ch;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
}

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

.section {
  padding: 1rem 0 2rem;
}

.section h2 {
  margin-bottom: 0.75rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.grid.single {
  grid-template-columns: minmax(0, 360px);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 10px 24px #0f172a0f;
}

.card h3 {
  margin-top: 0;
}

.tier ul {
  margin: 0;
  padding-left: 1.1rem;
}

.price {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0.4rem 0;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  font-size: 0.95rem;
}

.footer-identity {
  max-width: 58ch;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  flex-wrap: wrap;
}

.demo-shell {
  padding: 1rem 0 2rem;
}

.demo-title-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.demo-title-row h1 {
  margin: 0;
  font-size: 1.4rem;
}

.badge {
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  border: 1px solid #9fd8b7;
  color: var(--ok);
  background: #ebfbf2;
  font-size: 0.85rem;
  font-weight: 600;
}

.demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(280px, 3fr);
  grid-template-rows: auto auto;
  gap: 0.85rem;
}

.chart-panel {
  grid-row: 1 / span 2;
  min-height: 560px;
}

.chart-panel h2,
.side-panel h2 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
}

.chart {
  width: 100%;
  height: 520px;
}

.feed-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 255px;
  overflow: auto;
  font-size: 0.9rem;
}

.feed-list li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border);
  padding: 0.35rem 0;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.table th,
.table td {
  text-align: left;
  border-bottom: 1px solid var(--border);
  padding: 0.45rem 0;
}

.legal-page {
  padding: 2rem 0;
}

.request-form {
  margin-top: 1rem;
  display: grid;
  gap: 0.9rem;
  max-width: 640px;
}

.request-form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

.request-form input,
.request-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.7rem;
  background: #fff;
  color: var(--ink);
}

.form-status {
  margin: 0.2rem 0 0;
  font-size: 0.92rem;
}

.form-status.ok {
  color: var(--ok);
}

.form-status.error {
  color: #b91c1c;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr;
  }

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

  .chart-panel {
    grid-row: auto;
    min-height: 440px;
  }

  .chart {
    height: 400px;
  }

  .footer-row {
    flex-direction: column;
  }
}