:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a26;
  --fg: #e8e6e1;
  --fg-muted: #9a9890;
  --accent: #f0c040;
  --accent-dim: #c49a20;
  --accent-glow: rgba(240, 192, 64, 0.15);
  --green: #4ade80;
  --red: #f87171;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-w: 1100px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ====== HERO ====== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, var(--accent-glow), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(74, 222, 128, 0.06), transparent),
    var(--bg);
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: var(--space-md);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: var(--space-md);
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-sub {
  max-width: 560px;
  font-size: 1.15rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.hero-visual {
  max-width: var(--max-w);
  margin: var(--space-lg) auto 0;
  width: 100%;
}

.ramp-graphic {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 200px;
  padding: var(--space-sm);
  background: var(--bg-elevated);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.05);
}

.ramp-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  border-radius: 6px 6px 0 0;
  padding: var(--space-sm) var(--space-xs);
  transition: background 0.3s;
}

.ramp-step .step-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

.ramp-step .step-val {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}

.step-1 { height: 25%; background: rgba(240, 192, 64, 0.08); }
.step-2 { height: 50%; background: rgba(240, 192, 64, 0.12); }
.step-3 { height: 75%; background: rgba(240, 192, 64, 0.18); }
.step-4 { height: 100%; background: rgba(240, 192, 64, 0.25); }

/* ====== PROBLEM ====== */
.problem {
  padding: var(--space-xl) var(--space-md);
  background: var(--bg-elevated);
}

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

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.problem h2 em {
  color: var(--accent);
  font-style: normal;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 12px;
  padding: var(--space-md);
}

.problem-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent-glow);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

/* ====== HOW ====== */
.how {
  padding: var(--space-xl) var(--space-md);
}

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

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.how-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-top: 0.75rem;
  margin-bottom: var(--space-lg);
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.how-step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding: var(--space-md);
  background: var(--bg-elevated);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.04);
  transition: border-color 0.3s;
}

.how-step:hover {
  border-color: var(--accent-dim);
}

.how-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  min-width: 60px;
}

.how-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.how-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ====== NUMBERS ====== */
.numbers {
  padding: var(--space-xl) var(--space-md);
  background: var(--bg-elevated);
}

.numbers-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  text-align: center;
}

.number-big {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.number-desc {
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* ====== CLOSING ====== */
.closing {
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, var(--accent-glow), transparent),
    var(--bg);
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ====== FOOTER ====== */
.site-footer {
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--fg);
}

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

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
  .problem-grid { grid-template-columns: 1fr; }
  .numbers-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .how-step { flex-direction: column; gap: var(--space-sm); }
  .how-num { font-size: 1.8rem; min-width: auto; }
  .ramp-graphic { height: 160px; }
  .ramp-step .step-val { font-size: 0.9rem; }
  .hero { min-height: 70vh; }
}