:root {
  --bg: #0a0a0c;
  --bg-surface: #111116;
  --bg-card: #16161d;
  --fg: #e8e8ec;
  --fg-muted: #8a8a9a;
  --fg-dim: #5a5a6a;
  --accent: #4f7df9;
  --accent-glow: rgba(79, 125, 249, 0.15);
  --accent-2: #f97f4f;
  --green: #34d399;
  --red: #f87171;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 780px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid rgba(79, 125, 249, 0.25);
  border-radius: 99px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto 32px;
}

.hero-cta {
  margin-bottom: 48px;
}

.btn-hero-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 99px;
  text-decoration: none !important;
  transition: opacity 0.15s, transform 0.1s, box-shadow 0.15s;
  box-shadow: 0 0 24px rgba(79, 125, 249, 0.35);
}

.btn-hero-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 32px rgba(79, 125, 249, 0.5);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--fg);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-dim);
  max-width: 140px;
  display: block;
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.08);
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 60px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 36px 28px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  opacity: 0.7;
}

.problem-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

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

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
  background: var(--bg-surface);
}

.how-inner {
  max-width: 720px;
  margin: 0 auto;
}

.how-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 56px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border: 1px solid rgba(79, 125, 249, 0.3);
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

.step-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* ---- PROOF ---- */
.proof {
  padding: 100px 24px;
}

.proof-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.proof h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 48px;
}

.comparison {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: 32px;
}

.comparison-col {
  flex: 1;
  padding: 32px 28px;
  border-radius: var(--radius);
  text-align: left;
}

.comparison-col.old {
  background: rgba(248, 113, 113, 0.06);
  border: 1px solid rgba(248, 113, 113, 0.15);
}

.comparison-col.new {
  background: rgba(52, 211, 153, 0.06);
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.col-header {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 20px;
}

.old .col-header { color: var(--red); }
.new .col-header { color: var(--green); }

.comparison-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.comparison-col li {
  color: var(--fg-muted);
  font-size: 0.92rem;
  padding-left: 16px;
  position: relative;
}

.old li::before { content: '\2013'; position: absolute; left: 0; color: var(--red); opacity: 0.5; }
.new li::before { content: '+'; position: absolute; left: 0; color: var(--green); opacity: 0.7; }

.comparison-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.proof-note {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: var(--bg-surface);
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  color: var(--accent);
}

/* ---- FOOTER ---- */
.footer {
  padding: 32px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--fg-dim);
}

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

.footer-sep { opacity: 0.3; }

.footer-note a { color: var(--fg-dim); }
.footer-note a:hover { color: var(--accent); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }
  
  .stat-divider { display: none; }
  
  .comparison {
    flex-direction: column;
    gap: 16px;
  }
  
  .comparison-vs {
    padding: 8px 0;
  }
  
  .step { flex-direction: column; gap: 12px; }
}

@media (max-width: 480px) {
  .hero { min-height: 80vh; padding: 60px 16px 40px; }
  .problem, .how, .proof { padding: 60px 16px; }
  .closing { padding: 80px 16px; }
  .problem-card { padding: 24px 20px; }
}