:root {
  --bg: #0b0f14;
  --bg-elevated: #11161d;
  --accent: #22d3a8;
  --text-heading: #e6edf3;
  --text-body: #8b949e;
  --border: rgba(255, 255, 255, 0.1);
  --font-heading: 'JetBrains Mono', monospace;
  --font-body: 'Inter', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text-body);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  line-height: 1.3;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: box-shadow 0.2s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  box-shadow: 0 0 20px rgba(34, 211, 168, 0.4);
}

.btn-small {
  padding: 8px 18px;
  font-size: 0.9rem;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

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

.logo {
  font-family: var(--font-heading);
  color: var(--text-heading);
  font-weight: 700;
  text-decoration: none;
}

.hero {
  padding: 120px 0 80px;
  text-align: center;
  border-top: none;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  max-width: 760px;
  margin: 0 auto 20px;
}

.hero-lead {
  max-width: 600px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

section {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.section-lead {
  max-width: 560px;
  margin-bottom: 40px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.card, .feature {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

.card:hover, .feature:hover {
  border-color: var(--accent);
}

.card h3, .feature h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.card p, .feature p {
  font-size: 0.92rem;
}

.feature-icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
  margin-bottom: 14px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 480px;
}

.contact-form label {
  font-size: 0.85rem;
  color: var(--text-heading);
  margin-top: 12px;
}

.contact-form input,
.contact-form textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text-heading);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.contact-form button {
  margin-top: 20px;
  align-self: flex-start;
  border: none;
  cursor: pointer;
}

.form-status {
  margin-top: 12px;
  font-size: 0.9rem;
  min-height: 1.2em;
}

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

.form-status.error {
  color: #f87171;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .card-grid,
  .card-grid.three {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 80px 0 60px;
  }
}