:root {
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --fg: #f0f0f0;
  --fg-muted: #8a8a8a;
  --accent: #e8ff2e;
  --accent-dim: rgba(232, 255, 46, 0.12);
  --border: #2a2a2a;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-w: 1100px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

/* === HERO === */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 80px 24px;
  background: radial-gradient(ellipse at 50% 0%, rgba(232, 255, 46, 0.06) 0%, transparent 60%);
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 82px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 28px;
  color: var(--fg);
}

.hero-sub {
  font-size: 19px;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 720px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -1px;
}

.stat-label {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
  flex-shrink: 0;
}

/* === PROBLEM === */
.problem {
  padding: 100px 24px;
  background: var(--bg);
}

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

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 48px;
  color: var(--fg);
}

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

.problem-card {
  padding: 32px 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: rgba(232, 255, 46, 0.3);
}

.problem-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.problem-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* === FEATURES === */
.features {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

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

.features-header {
  margin-bottom: 56px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--fg);
}

.features-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.6;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 36px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(232, 255, 46, 0.3);
}

.feature-highlight {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.feature-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

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

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

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 56px;
  color: var(--fg);
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.how-step {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

.how-step:first-child {
  border-top: 1px solid var(--border);
}

.step-marker {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--fg);
}

.step-content p {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.6;
}

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

.closing::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(232, 255, 46, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  color: var(--fg);
}

.closing-text {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* === FOOTER === */
.site-footer {
  padding: 48px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  text-align: center;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 6px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--fg-muted);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 60px 20px 48px;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
  }

  .stat-divider {
    width: 100%;
    height: 1px;
  }

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

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

  .how-step {
    gap: 20px;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 64px 20px;
  }
}

/* === CTA BUTTONS (landing page) === */
.hero-ctas {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.closing-ctas {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn-cta {
  display: inline-block;
  background: var(--accent);
  color: #0a0a0a;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn-cta:hover { opacity: 0.9; }
.btn-cta:active { transform: scale(0.98); }

.btn-demo {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  padding: 13px 24px;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.btn-demo:hover { border-color: var(--fg-muted); color: var(--fg); }
.btn-demo:disabled { opacity: 0.5; cursor: not-allowed; }