:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-elevated: #1a1a26;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --accent: #00ff87;
  --accent-dim: rgba(0, 255, 135, 0.15);
  --accent-glow: rgba(0, 255, 135, 0.3);
  --danger: #ff4d6a;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-w: 1140px;
  --gap: clamp(1rem, 4vw, 2.5rem);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: clamp(4rem, 10vw, 8rem) var(--gap) clamp(3rem, 6vw, 5rem);
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(0, 255, 135, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 30%, rgba(0, 100, 255, 0.04) 0%, transparent 70%),
    var(--bg);
}

.hero-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.accent { color: var(--accent); }

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* Metric cards */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 1.2rem 1.5rem;
  transition: border-color 0.3s ease;
}

.metric-card:hover {
  border-color: var(--accent-glow);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-display);
  margin-bottom: 0.4rem;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.metric-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 100px;
  overflow: hidden;
}

.metric-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), rgba(0, 255, 135, 0.4));
  border-radius: 100px;
  transition: width 1.5s ease;
}

.metric-bar-fill.green {
  background: linear-gradient(90deg, #00cc6a, rgba(0, 204, 106, 0.4));
}

/* ===== PROOF (stats bar) ===== */
.proof {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: clamp(2.5rem, 5vw, 4rem) var(--gap);
  background: var(--bg-card);
}

.proof-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.proof-stat {
  flex: 1;
}

.proof-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.proof-desc {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.proof-divider {
  width: 1px;
  min-height: 80px;
  background: rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

/* ===== HOW ===== */
.how {
  padding: clamp(4rem, 8vw, 7rem) var(--gap);
}

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

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.how-step {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.how-step:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-dim);
  line-height: 1;
  margin-bottom: 1rem;
}

.how-step h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.how-step p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ===== CLOSING ===== */
.closing {
  padding: clamp(4rem, 8vw, 7rem) var(--gap);
  background:
    radial-gradient(ellipse 50% 50% at 50% 80%, rgba(0, 255, 135, 0.05) 0%, transparent 70%),
    var(--bg);
}

.closing-inner {
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.closing-channels {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.channel {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: clamp(2rem, 4vw, 3rem) var(--gap);
  text-align: center;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero {
    min-height: auto;
    padding-top: 5rem;
  }

  .proof-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .proof-divider {
    width: 100%;
    min-height: 0;
    height: 1px;
  }

  .how-grid {
    grid-template-columns: 1fr;
  }

  .closing-channels {
    gap: 0.5rem;
  }
}