:root {
  --brand: #d85a3f;
  --secure: #0f9d8a;
  --p2p: #f5c542;
  --private: #245b73;
  --gateway: #0e8c9f;
  --intake: #0891b2;
  --ink: #1f242b;
  --muted: #5d6875;
  --line: #dfe4ea;
  --bg: #f8fafb;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a {
  color: inherit;
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.app-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  box-shadow: 0 16px 38px rgba(31, 36, 43, 0.06);
}

.app-card h3 {
  margin: 0;
}

.intro {
  padding: 54px 0 24px;
}

.intro p {
  max-width: 940px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 650;
  line-height: 1.35;
}

.section {
  padding: 18px 0 30px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.app-card {
  display: grid;
  gap: 16px;
  align-content: start;
  padding: 18px;
  border-top: 4px solid var(--secure);
}

.app-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.card-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-logo {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  flex: 0 0 auto;
}

.app-p2p {
  border-top-color: var(--p2p);
}

.app-gateway {
  border-top-color: var(--gateway);
}

.app-private {
  border-top-color: var(--private);
}

.app-intake {
  border-top-color: var(--intake);
}

.footer {
  padding: 34px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 780px) {
  .topbar-inner {
    min-height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }

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

  .intro {
    padding: 34px 0 16px;
  }

  .button {
    width: 100%;
  }
}