:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --fg-primary: #eeeef0;
  --fg-secondary: #9494a0;
  --fg-muted: #5c5c6c;
  --accent: #6c63ff;
  --accent-soft: rgba(108, 99, 255, 0.15);
  --accent-glow: rgba(108, 99, 255, 0.3);
  --gradient: linear-gradient(135deg, #6c63ff 0%, #c084fc 50%, #f472b6 100%);
  --success: #34d399;
  --danger: #f87171;
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

/* ======== LANDING NAV ======== */
.landing-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 60px;
  display: flex;
  align-items: center;
}

.landing-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.landing-nav-brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-nav-cta {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-glow);
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  transition: all 0.2s ease;
}

.landing-nav-cta:hover {
  background: rgba(108, 99, 255, 0.25);
}

.hero-cta-btn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius);
  background: var(--gradient);
  color: white;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hero-cta-btn:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

/* ======== HERO ======== */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, black 30%, transparent 100%);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-secondary);
  max-width: 580px;
  margin: 0 auto 48px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ======== PROBLEM ======== */
.problem {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.problem-text h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 20px;
}

.problem-text p {
  color: var(--fg-secondary);
  font-size: 1rem;
}

.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
}

.comparison-card.new {
  border-color: var(--accent-glow);
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.05), rgba(192, 132, 252, 0.03));
}

.card-header {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--fg-muted);
}

.comparison-card.new .card-header {
  color: var(--accent);
}

.comparison-card ul {
  list-style: none;
}

.comparison-card li {
  padding: 6px 0;
  font-size: 0.95rem;
  color: var(--fg-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-x {
  color: var(--danger);
  font-size: 0.85rem;
  font-weight: 700;
}

.icon-check {
  color: var(--success);
  font-size: 0.85rem;
  font-weight: 700;
}

/* ======== HOW ======== */
.how {
  padding: 100px 0;
}

.how-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 60px;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.how-step {
  position: relative;
  padding: 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s ease;
}

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

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}

.how-step h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.how-step p {
  color: var(--fg-secondary);
  font-size: 0.92rem;
}

/* ======== FEATURES ======== */
.features {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.features-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 60px;
}

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

.feature-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-glow);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* ======== CLOSING ======== */
.closing {
  padding: 120px 0;
  text-align: center;
}

.closing-content {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.closing p {
  color: var(--fg-secondary);
  font-size: 1.05rem;
}

/* ======== FOOTER ======== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

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

/* ======== RESPONSIVE ======== */
@media (max-width: 768px) {
  .hero {
    padding: 100px 0 70px;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-divider {
    display: none;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .how-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .problem,
  .how,
  .features {
    padding: 70px 0;
  }

  .closing {
    padding: 80px 0;
  }
}