/* Fonts */
:root {
  --bg: #0D0F14;
  --surface: #141720;
  --surface-2: #1C2030;
  --fg: #E8EAF0;
  --fg-muted: #7A8099;
  --accent: #F5A623;
  --accent-dim: #8B5F10;
  --border: #252A3A;
  --success: #3D9E6B;
  --font-display: 'Syne', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
}

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

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

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

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.brand-os {
  color: var(--accent);
}

.nav-tagline {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* Hero */
.hero {
  padding: 5rem 3rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.hero-problem {
  border-left: 3px solid var(--accent);
  padding-left: 2rem;
}

.hero-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.hero-stat-block {
  margin-bottom: 2rem;
}

.hero-stat {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1;
  color: var(--fg);
  letter-spacing: -0.03em;
}

.hero-stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--fg-muted);
  margin-top: 0.4rem;
  line-height: 1.4;
}

.hero-solution {
  padding-top: 0.5rem;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 4.5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.0625rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 42ch;
}

/* Problem */
.problem {
  background: var(--surface);
  padding: 5rem 3rem;
  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;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.problem-statement {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.2;
  color: var(--fg);
  letter-spacing: -0.02em;
  max-width: 20ch;
  margin-bottom: 3.5rem;
}

.problem-causes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.cause-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.cause-icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  background: var(--surface-2);
}

.cause-item p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
  padding-top: 0.2rem;
}

/* How It Works */
.how-it-works {
  padding: 6rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
}

.section-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.875rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.2;
  color: var(--fg);
  letter-spacing: -0.02em;
  max-width: 28ch;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 3rem;
}

.step-card {
  background: var(--surface);
  padding: 2rem 1.75rem;
}

.step-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.step-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.step-desc {
  font-size: 0.8125rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

.outcome-strip {
  border: 1px solid var(--accent-dim);
  border-radius: 8px;
  padding: 1.5rem 2rem;
  background: rgba(245, 166, 35, 0.04);
}

.outcome-text {
  font-size: 0.9375rem;
  color: var(--fg);
  line-height: 1.6;
  max-width: 65ch;
}

/* Why Now */
.why-now {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 6rem 3rem;
}

.why-now-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  margin-bottom: 4rem;
}

.why-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.25;
  color: var(--fg);
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.mandate-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.mandate-item:last-child {
  border-bottom: none;
}

.mandate-tag {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 600;
  background: rgba(245,166,35,0.1);
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  margin-bottom: 0.6rem;
}

.mandate-item p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

.bottleneck-statement {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.bottleneck-label {
  font-size: 1.125rem;
  color: var(--fg-muted);
  font-weight: 300;
}

.bottleneck-answer {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--fg);
  letter-spacing: -0.03em;
}

/* Moats */
.moats {
  padding: 6rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 4rem;
}

.timeline-item {
  background: var(--surface);
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
}

.timeline-item:last-child {
  border-right: none;
}

.timeline-year {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.moat-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.moat-desc {
  font-size: 0.8125rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* Closing */
.closing {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 6rem 3rem;
  border-bottom: 1px solid var(--border);
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.closing-text {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.closing-vision {
  color: var(--fg);
  font-weight: 500;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  margin-top: 2.5rem;
}

/* Footer */
.footer {
  padding: 3rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--fg);
  margin-bottom: 0.25rem;
}

.footer-product {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.footer-legal {
  font-size: 0.75rem;
  color: var(--fg-muted);
  opacity: 0.6;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-split { grid-template-columns: 1fr; gap: 3rem; }
  .problem-causes { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .why-now-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav { padding: 1rem 1.5rem; }
  .hero { padding: 3rem 1.5rem 2.5rem; }
  .problem { padding: 3.5rem 1.5rem; }
  .how-it-works { padding: 3.5rem 1.5rem; }
  .steps-grid { grid-template-columns: 1fr; }
  .why-now { padding: 3.5rem 1.5rem; }
  .moats { padding: 3.5rem 1.5rem; }
  .timeline { grid-template-columns: 1fr; }
  .bottleneck-statement { flex-direction: column; gap: 0.5rem; }
  .closing { padding: 3.5rem 1.5rem; }
  .footer { padding: 2rem 1.5rem; }
}