/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

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

:root {
  --bg: #0D0F14;
  --bg-alt: #12141A;
  --bg-card: #161821;
  --fg: #F0F0F5;
  --fg-muted: #8B8FA3;
  --fg-subtle: #5A5D6E;
  --accent: #00E5CC;
  --accent-dim: rgba(0, 229, 204, 0.12);
  --purple: #6C2BD9;
  --purple-dim: rgba(108, 43, 217, 0.15);
  --border: rgba(255,255,255,0.06);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.nav-tagline {
  font-size: 0.75rem;
  color: var(--fg-muted);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,204,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,204,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 80%);
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(108,43,217,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-nodes {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%);
  width: 55%;
  max-width: 600px;
  opacity: 0.5;
}

.nodes-svg { width: 100%; height: auto; }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 204, 0.2);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent); }
  50% { opacity: 0.5; box-shadow: 0 0 16px var(--accent); }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
}

.headline-accent {
  background: linear-gradient(135deg, var(--accent) 0%, #00B8A3 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 36px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
  text-align: center;
}

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

/* Problem */
.problem {
  padding: 100px 32px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner { max-width: 1200px; margin: 0 auto; }

.problem-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.problem-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 60px;
  max-width: 700px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

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

.problem-card:hover { border-color: rgba(108, 43, 217, 0.3); }

.problem-icon {
  width: 40px;
  height: 40px;
  background: var(--purple-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.problem-card p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* What it is */
.whatitis {
  padding: 100px 32px;
  background: var(--bg);
}

.whatitis-inner { max-width: 900px; margin: 0 auto; text-align: center; }

.whatitis-label,
.features-label,
.diff-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.whatitis-headline,
.features-headline,
.diff-headline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  text-align: left;
  flex-wrap: wrap;
  row-gap: 32px;
}

.step {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 24px;
  opacity: 0.5;
}

.step-number {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--fg);
}

.step-content p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.whatitis-cta { margin-top: 48px; }

.cta-bar {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 204, 0.15);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

/* Features */
.features {
  padding: 100px 32px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-inner { max-width: 1200px; margin: 0 auto; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(0, 229, 204, 0.2);
  transform: translateY(-2px);
}

.feature-card-wide {
  grid-column: 1 / -1;
}

@media (min-width: 768px) {
  .feature-card-wide {
    grid-column: span 2;
  }
}

.feature-icon-ring {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 204, 0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

/* Differentiation */
.differentiation {
  padding: 100px 32px;
  background: var(--bg);
}

.diff-inner { max-width: 900px; margin: 0 auto; }

.diff-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  margin-top: -40px;
  margin-bottom: 56px;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-bottom: 60px;
}

.diff-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.diff-marker {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 204, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.diff-item h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 6px;
}

.diff-item p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.diff-quote {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}

.quote-mark { margin-bottom: 20px; }

.diff-quote p {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--fg);
  margin-bottom: 20px;
  font-style: italic;
}

.quote-attr {
  font-size: 0.8rem;
  color: var(--fg-subtle);
  letter-spacing: 0.06em;
}

/* Closing */
.closing {
  padding: 120px 32px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.closing-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 80px;
}

.closing-visual {
  flex-shrink: 0;
  position: relative;
  width: 280px;
}

.closing-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, rgba(0,229,204,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing-nodes { width: 100%; }

.closing-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}

.closing-text p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.closing-statement {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.closing-statement p {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.01em;
  margin-bottom: 0;
}

/* Footer */
.footer {
  padding: 48px 32px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--fg-subtle);
  font-style: italic;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.7rem;
  color: var(--fg-subtle);
}

.footer-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--fg-subtle);
}

/* Responsive */
@media (max-width: 768px) {
  .nav { padding: 0 20px; }
  .nav-tagline { display: none; }

  .hero { padding: 100px 20px 60px; }
  .hero-nodes { display: none; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { display: none; }
  .stat { border-bottom: 1px solid var(--border); padding-bottom: 16px; }
  .stat:last-child { border-bottom: none; padding-bottom: 0; }

  .problem, .whatitis, .features, .differentiation { padding: 72px 20px; }
  .steps { flex-direction: column; gap: 28px; }
  .step-connector { display: none; }

  .closing { padding: 80px 20px; }
  .closing-inner { flex-direction: column; gap: 40px; }
  .closing-visual { width: 200px; margin: 0 auto; }

  .diff-grid { grid-template-columns: 1fr; }
  .feature-card-wide { grid-column: 1; }
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
  .hero-headline { animation: fadeUp 0.6s ease-out 0.1s both; }
  .hero-badge { animation: fadeUp 0.6s ease-out 0s both; }
  .hero-sub { animation: fadeUp 0.6s ease-out 0.2s both; }
  .hero-stats { animation: fadeUp 0.6s ease-out 0.3s both; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}