:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #181824;
  --fg: #e8e6e3;
  --fg-muted: #8a8a9a;
  --accent: #f97316;
  --accent-glow: rgba(249, 115, 22, 0.15);
  --accent-bright: #fb923c;
  --green: #22c55e;
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --max-w: 1120px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── HERO ─── */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 0%, rgba(249, 115, 22, 0.08) 0%, transparent 60%);
}

.hero-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid rgba(249, 115, 22, 0.3);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  display: inline-block;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  max-width: 800px;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero .accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-visual {
  margin-top: 4rem;
}

.waveform {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 80px;
}

.waveform .bar {
  width: 8px;
  height: var(--h);
  background: linear-gradient(to top, var(--accent), var(--accent-bright));
  border-radius: 4px;
  animation: pulse 1.5s ease-in-out infinite alternate;
}

.waveform .bar:nth-child(odd) { animation-delay: 0.2s; }
.waveform .bar:nth-child(3n) { animation-delay: 0.5s; }
.waveform .bar:nth-child(4n) { animation-delay: 0.8s; }

@keyframes pulse {
  0% { opacity: 0.5; transform: scaleY(0.85); }
  100% { opacity: 1; transform: scaleY(1); }
}

/* ─── PROBLEM ─── */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.problem-statement {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 700px;
  line-height: 1.8;
  margin-bottom: 3rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ─── FEATURES ─── */
.features {
  padding: 6rem 2rem;
}

.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  margin-bottom: 3rem;
  letter-spacing: -0.01em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.3s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(249, 115, 22, 0.3);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 12px;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ─── HOW IT WORKS ─── */
.how {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  margin-bottom: 3rem;
  letter-spacing: -0.01em;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  width: 60px;
  opacity: 0.7;
}

.step-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 540px;
}

/* ─── CLOSING ─── */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse at 50% 100%, rgba(249, 115, 22, 0.06) 0%, transparent 60%);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.closing-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.8;
}

/* ─── FOOTER ─── */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

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

/* ─── RESPONSIVE ─── */
@media (max-width: 640px) {
  .hero { padding: 4rem 1.5rem 3rem; min-height: 80vh; }
  .problem, .features, .how { padding: 4rem 1.5rem; }
  .closing { padding: 5rem 1.5rem; }
  .step { flex-direction: column; gap: 0.5rem; }
  .step-num { font-size: 1.5rem; }
  .waveform .bar { width: 5px; }
  .waveform { gap: 4px; height: 60px; }
  .stats-row { grid-template-columns: 1fr; }
}