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

:root {
  --bg:        #0d0f14;
  --bg-card:   #161a23;
  --bg-card2:  #1c2130;
  --border:    #ffffff12;
  --accent:    #6366f1;
  --accent-h:  #4f52d9;
  --text:      #f1f5f9;
  --muted:     #94a3b8;
  --radius:    12px;
}

html { scroll-behavior: smooth; }

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--bg-card2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-primary:hover { background: var(--bg-card); border-color: var(--accent); }

.btn-hero {
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  border-radius: 10px;
}
.btn-hero:hover { background: var(--accent-h); transform: translateY(-1px); }

/* ── Hero ── */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(99,102,241,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 999px;
  font-size: 0.8rem;
  color: #a78bfa;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

/* ── Features ── */
.features {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.features-title {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(99,102,241,0.4);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(99,102,241,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #a78bfa;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── CTA ── */
.cta {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.cta-inner {
  text-align: center;
}

.cta h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.cta p {
  color: var(--muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .hero { padding: 4rem 0 3rem; }
  .hero h1 { font-size: 2.25rem; }
  .features-grid { grid-template-columns: 1fr; }
}