:root {
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --text: #1a1f29;
  --text-muted: #5b6472;
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --border: #e5e9f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

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

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header nav a {
  color: var(--text);
  font-size: 0.95rem;
}

.nav-cta {
  color: #fff !important;
  background: var(--accent);
  padding: 8px 16px;
  border-radius: 6px;
}

.nav-cta:hover {
  background: var(--accent-dark);
}

/* Hero */

.hero {
  padding: 96px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.hero-sub {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
}

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

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

/* Generic section spacing */

section {
  padding: 72px 0;
}

section:nth-of-type(even) {
  background: var(--bg-alt);
}

.problem .container,
.trust .container {
  max-width: 720px;
  text-align: center;
}

.trust,
.contact {
  text-align: center;
}

/* Capability cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.capabilities {
  background: var(--bg);
}

.capabilities h2 {
  text-align: center;
  margin-bottom: 40px;
}

/* How it works */

.how-it-works h2 {
  text-align: center;
  margin-bottom: 40px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  text-align: center;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}

/* Contact */

.contact {
  padding-bottom: 96px;
}

/* Footer */

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

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Responsive */

@media (max-width: 640px) {
  .site-header nav {
    gap: 12px;
  }

  .site-header nav a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding: 64px 0 56px;
  }

  section {
    padding: 48px 0;
  }
}