:root {
  --bg: #05060a;
  --card: #10131f;
  --accent: #4ade80;
  --text: #f7f7f7;
  --muted: #9ca3af;
  --gradient: linear-gradient(135deg, #0f172a 0%, #111827 50%, #1e293b 100%);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.75rem clamp(1.5rem, 4vw, 5rem);
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  background: rgba(5, 6, 10, 0.75);
  z-index: 10;
}

.site-header .brand {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

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

.site-header nav a {
  color: var(--muted);
  margin-left: 1.5rem;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-header nav a:hover {
  color: var(--text);
}

.site-header nav a.cta,
.btn {
  background: var(--accent);
  color: #032b15;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 12px 40px rgba(74, 222, 128, 0.25);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(2rem, 6vw, 5rem);
  padding: clamp(3rem, 8vw, 8rem) clamp(1.5rem, 6vw, 5rem);
  background: var(--gradient);
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 1rem;
}

.hero-copy p {
  max-width: 520px;
  color: rgba(247, 247, 247, 0.85);
}

.hero-stats {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: grid;
  gap: 0.75rem;
}

.hero-stats li {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.6);
}

.hero-visual .badge {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: rgba(5, 6, 10, 0.85);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

section {
  padding: clamp(3rem, 7vw, 6rem) clamp(1.5rem, 6vw, 5rem);
}

section h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 1.5rem;
}

.steps ol {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
  padding: 0;
  margin: 0;
}

.steps li {
  list-style: none;
  background: var(--card);
  border-radius: 20px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  opacity: 0.6;
}

.steps li h3 {
  margin-top: 0;
}

.filters .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.filters article {
  background: var(--card);
  border-radius: 18px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  min-height: 160px;
}

.proof {
  background: #0b1020;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.proof blockquote {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 500;
  color: rgba(247, 247, 247, 0.9);
}

.proof cite {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-style: normal;
}

.integration ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding-left: 1rem;
  margin: 2rem 0 0;
  color: rgba(247, 247, 247, 0.85);
}

.cta {
  text-align: center;
  background: var(--gradient);
  border-radius: 28px;
  margin: 3rem clamp(1.5rem, 6vw, 5rem);
  padding: clamp(3rem, 8vw, 6rem);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.55);
}

.demo-form {
  display: grid;
  gap: 1rem;
  max-width: 480px;
  margin: 2rem auto;
}

.demo-form label {
  display: grid;
  text-align: left;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: rgba(247, 247, 247, 0.9);
}

.demo-form input {
  padding: 0.8rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(5, 6, 10, 0.8);
  color: var(--text);
}

.demo-form input::placeholder {
  color: rgba(156, 163, 175, 0.8);
}

.demo-form button {
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.demo-form.is-submitting,
.demo-form.is-submitting button,
.demo-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.whatsapp-alt {
  color: var(--muted);
}

.whatsapp-alt a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.site-footer {
  padding: 2rem clamp(1.5rem, 4vw, 5rem);
  display: flex;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--muted);
  margin-left: 1.5rem;
  text-decoration: none;
}

@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
    gap: 1rem;
  }

  .site-header nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .cta {
    margin: 2rem 1.25rem;
    padding: 2.5rem 1.5rem;
  }
}