:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #657085;
  --line: #e3e7ef;
  --primary: #5b5ff4;
  --primary-strong: #474be0;
  --accent: #18a77f;
  --shadow: 0 24px 70px rgba(36, 43, 84, 0.16);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 80% 10%, rgba(91, 95, 244, 0.16), transparent 28%), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

.hero {
  min-height: 680px;
  padding: 28px clamp(24px, 5vw, 72px) 64px;
}

.nav, footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1160px;
  margin: 0 auto;
}

.brand, .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  font-size: 13px;
}

.nav-link { color: var(--primary); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 460px);
  gap: clamp(42px, 7vw, 96px);
  align-items: center;
  max-width: 1160px;
  margin: 84px auto 0;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(48px, 7vw, 86px);
  line-height: 0.96;
}

.lead {
  max-width: 590px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.6;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  padding: 0 22px;
  font-weight: 800;
}

.button-primary { background: var(--primary); color: white; box-shadow: 0 14px 32px rgba(91, 95, 244, 0.28); }
.button-primary:hover { background: var(--primary-strong); }
.button-secondary { border: 1px solid var(--line); background: rgba(255, 255, 255, 0.78); }

.product-panel {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.78);
  padding: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.product-panel::before {
  content: "";
  position: absolute;
  inset: -28px;
  z-index: -1;
  border-radius: 40px;
  background: linear-gradient(135deg, rgba(91, 95, 244, 0.28), rgba(24, 167, 127, 0.18));
  filter: blur(18px);
}

.receipt-card, .metric-row, .features article {
  border: 1px solid var(--line);
  background: var(--surface);
}

.receipt-card {
  display: flex;
  align-items: center;
  gap: 16px;
  border-radius: 20px;
  padding: 18px;
}

.receipt-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(91, 95, 244, 0.12);
  color: var(--primary);
  font-size: 28px;
}

.receipt-card p, .metric-row span, .features p { color: var(--muted); }
.receipt-card p { margin: 4px 0 0; }

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
  border-radius: 20px;
  padding: 18px;
}

.metric-row div { display: grid; gap: 6px; }
.metric-row strong { font-size: 28px; }

.chart {
  display: flex;
  align-items: end;
  gap: 12px;
  height: 160px;
  margin-top: 20px;
  padding: 0 8px;
}

.chart span {
  flex: 1;
  border-radius: 14px 14px 6px 6px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.chart span:nth-child(1) { height: 42%; }
.chart span:nth-child(2) { height: 68%; }
.chart span:nth-child(3) { height: 54%; }
.chart span:nth-child(4) { height: 86%; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1160px;
  margin: 0 auto 72px;
  padding: 0 clamp(24px, 5vw, 72px);
}

.features article {
  border-radius: 20px;
  padding: 24px;
}

.features span { color: var(--accent); font-size: 30px; }
.features h2 { margin: 16px 0 8px; font-size: 20px; }
.features p { margin: 0; line-height: 1.55; }

footer {
  border-top: 1px solid var(--line);
  padding: 26px clamp(24px, 5vw, 72px);
  color: var(--muted);
}

footer a { color: var(--primary); font-weight: 800; }

@media (max-width: 820px) {
  .hero { min-height: auto; padding-bottom: 42px; }
  .hero-grid { grid-template-columns: 1fr; margin-top: 54px; }
  .product-panel { max-width: 460px; }
  .features { grid-template-columns: 1fr; margin-bottom: 42px; }
}

@media (max-width: 520px) {
  .nav-link { display: none; }
  .lead { font-size: 18px; }
  .actions, footer { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
}