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

:root {
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: #e2e8f0;
  background-color: var(--slate-950);
  line-height: 1.6;
}

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

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--green-400);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  color: #94a3b8;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--green-600);
  color: #fff;
}

.btn-primary:hover {
  background: var(--green-700);
}

.btn-outline {
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--green-400);
  color: var(--green-400);
}

.btn-large {
  padding: 0.85rem 2.2rem;
  font-size: 1rem;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(34,197,94,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: 9999px;
  font-size: 0.8rem;
  color: var(--green-400);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 1.25rem;
}

.hero h1 span {
  color: var(--green-400);
}

.hero p {
  font-size: 1.15rem;
  color: #94a3b8;
  max-width: 540px;
  margin: 0 auto 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Sections ── */
.section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green-400);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: #94a3b8;
  max-width: 600px;
  margin-bottom: 3rem;
}

.section-center {
  text-align: center;
}

.section-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ── Features Grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--slate-900);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 1rem;
  padding: 2rem;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(34,197,94,0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 0.75rem;
  background: rgba(34,197,94,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--green-400);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: #94a3b8;
}

/* ── Stats ── */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
  padding: 3rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin: 3rem 0;
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--green-400);
}

.stat-label {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 0.25rem;
}

/* ── Testimonials ── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--slate-900);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 1rem;
  padding: 2rem;
}

.testimonial-text {
  font-size: 0.95rem;
  color: #cbd5e1;
  font-style: italic;
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.testimonial-name {
  font-weight: 600;
  color: #fff;
  font-size: 0.9rem;
}

.testimonial-role {
  font-size: 0.8rem;
  color: #64748b;
}

/* ── CTA ── */
.cta {
  text-align: center;
  padding: 5rem 2rem;
  margin: 2rem auto;
  max-width: 700px;
}

.cta h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1.05rem;
  color: #94a3b8;
  margin-bottom: 2rem;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: #475569;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }

  .nav-links .nav-link-text {
    display: none;
  }

  .stats-row {
    gap: 2rem;
  }

  .stat-value {
    font-size: 2rem;
  }
}