/* ============================================================
   USDX — Main Stylesheet
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-100: #020810;
  --bg-200: #060D1A;
  --bg-card: #0D1D30;
  --bg-card-hover: #102238;
  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-default: rgba(255, 255, 255, 0.09);
  --border-accent: rgba(37, 99, 235, 0.35);

  --blue-400: #60A5FA;
  --blue-500: #3B82F6;
  --blue-600: #2563EB;
  --cyan-400: #22D3EE;
  --green-400: #4ADE80;
  --amber-400: #FBBF24;

  --text-primary: #F0F6FF;
  --text-secondary: #94A3B8;
  --text-muted: #4B6280;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --container: 1240px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.2s ease;
}

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

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

body {
  background-color: var(--bg-100);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Utilities ──────────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, #60A5FA 0%, #22D3EE 50%, #4ADE80 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-blue {
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: var(--blue-400);
}

.badge-green {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.25);
  color: var(--green-400);
}

.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-400);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--blue-500);
  border-radius: 2px;
}

/* ── Navigation ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background var(--transition), border-color var(--transition);
}

.navbar.scrolled {
  background: rgba(2, 8, 16, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  border: none;
}

.btn:focus-visible {
  outline: 2px solid var(--blue-400);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--blue-600);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-500);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.btn-xl {
  padding: 16px 40px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-secondary);
}

.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-hamburger span + span { margin-top: 5px; }

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow-1 {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(37, 99, 235, 0.18) 0%, transparent 70%);
}

.hero-glow-2 {
  position: absolute;
  bottom: 0; left: 15%;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(6, 182, 212, 0.10) 0%, transparent 65%);
}

.hero-glow-3 {
  position: absolute;
  bottom: 10%; right: 10%;
  width: 350px; height: 350px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(74, 222, 128, 0.08) 0%, transparent 65%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-tag {
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 72px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: rgba(13, 29, 48, 0.6);
  backdrop-filter: blur(12px);
  overflow: hidden;
  flex-wrap: wrap;
}

.hero-stat {
  padding: 20px 40px;
  border-right: 1px solid var(--border-subtle);
  flex: 1;
  min-width: 160px;
}

.hero-stat:last-child { border-right: none; }

.hero-stat-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ── Chain strip ─────────────────────────────────────────────── */
.chains-strip {
  padding: 28px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(6, 13, 26, 0.7);
  overflow: hidden;
}

.chains-label {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.chains-track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0 24px;
}

.chain-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.chain-pill:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.chain-icon {
  width: 20px; height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

/* Chain colors */
.chain-eth .chain-icon { background: #627EEA; color: #fff; }
.chain-arb .chain-icon { background: #28A0F0; color: #fff; }
.chain-poly .chain-icon { background: #8247E5; color: #fff; }
.chain-bnb .chain-icon { background: #F0B90B; color: #000; }
.chain-base .chain-icon { background: #0052FF; color: #fff; }
.chain-op .chain-icon { background: #FF0420; color: #fff; }
.chain-celo .chain-icon { background: #35D07F; color: #000; }
.chain-avax .chain-icon { background: #E84142; color: #fff; }
.chain-scroll .chain-icon { background: #EEB430; color: #000; }
.chain-linea .chain-icon { background: #121212; color: #fff; }
.chain-uni .chain-icon { background: #FC72FF; color: #fff; }

/* ── Sections ────────────────────────────────────────────────── */
section {
  padding: 96px 0;
}

.section-header {
  max-width: 640px;
}

.section-header.center {
  margin: 0 auto;
  text-align: center;
}

.section-header.center .section-label {
  justify-content: center;
}

.section-header.center .section-label::before {
  display: none;
}

h2.section-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Problems Grid ───────────────────────────────────────────── */
.problems-section { background: var(--bg-200); }

.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 56px;
}

.problem-card {
  background: var(--bg-card);
  padding: 32px;
  transition: background var(--transition);
}

.problem-card:hover {
  background: var(--bg-card-hover);
}

.problem-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.problem-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.problem-resolve {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--green-400);
  font-weight: 500;
}

.problem-resolve::before {
  content: '✓';
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── How It Works ────────────────────────────────────────────── */
.how-it-works { background: var(--bg-100); }

.flows-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 56px;
}

.flow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.flow-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.flow-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.flow-mint .flow-icon { background: rgba(37, 99, 235, 0.2); }
.flow-redeem .flow-icon { background: rgba(6, 182, 212, 0.15); }

.flow-card-header h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.flow-steps {
  display: flex;
  flex-direction: column;
}

.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.flow-step:last-child { border-bottom: none; }

.flow-step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.flow-mint .flow-step-num {
  background: rgba(37, 99, 235, 0.2);
  color: var(--blue-400);
  border: 1px solid rgba(37, 99, 235, 0.3);
}

.flow-redeem .flow-step-num {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-400);
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.flow-step-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding-top: 5px;
}

.flow-step-text strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 2px;
}

.flow-sla {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--green-400);
}

/* ── Reserve Model ───────────────────────────────────────────── */
.reserves-section { background: var(--bg-200); }

.reserves-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 56px;
}

.reserve-breakdown {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reserve-bar-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reserve-bar-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}

.reserve-bar-name {
  font-weight: 600;
  color: var(--text-primary);
}

.reserve-bar-pct {
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 15px;
}

.reserve-bar-track {
  height: 8px;
  background: var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
}

.reserve-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.reserve-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  font-style: italic;
}

.reserve-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.reserve-card-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.reserve-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-subtle);
}

.reserve-principles {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.reserve-principle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.reserve-principle-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--green-400);
  flex-shrink: 0;
}

/* ── Transparency ────────────────────────────────────────────── */
.transparency-section { background: var(--bg-100); }

.transparency-levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.t-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.t-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.t-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.t-card-1::before { background: linear-gradient(90deg, #3B82F6, #22D3EE); }
.t-card-2::before { background: linear-gradient(90deg, #22D3EE, #4ADE80); }
.t-card-3::before { background: linear-gradient(90deg, #4ADE80, #FBBF24); }

.t-level {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.t-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.t-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}

.t-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.t-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.t-item::before {
  content: '→';
  color: var(--blue-400);
  font-size: 12px;
}

/* ── Principles ──────────────────────────────────────────────── */
.principles-section { background: var(--bg-200); }

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.principle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: background-color var(--transition), border-color var(--transition);
}

.principle-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.principle-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blue-400);
  font-family: var(--font-mono);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.principle-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.principle-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Multi-chain ─────────────────────────────────────────────── */
.multichain-section { background: var(--bg-100); }

.multichain-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 56px;
}

.chain-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chain-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.chain-card:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.chain-logo {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
  color: #fff;
}

.chain-card-info {
  flex: 1;
}

.chain-card-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 2px;
}

.chain-card-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.chain-card-status {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

.status-live {
  background: rgba(34, 197, 94, 0.12);
  color: var(--green-400);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.multichain-text .section-label { margin-bottom: 12px; }

.multichain-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.mf-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.mf-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.mf-item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.mf-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Use Cases ───────────────────────────────────────────────── */
.usecases-section { background: var(--bg-200); }

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 56px;
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
  cursor: default;
}

.usecase-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.usecase-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}

.usecase-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.usecase-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Roadmap ─────────────────────────────────────────────────── */
.roadmap-section { background: var(--bg-100); }

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.roadmap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}

.roadmap-phase {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.roadmap-card h3 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.roadmap-period {
  font-size: 13px;
  color: var(--blue-400);
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.roadmap-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.roadmap-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.roadmap-item::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
  flex-shrink: 0;
  margin-top: 7px;
}

.roadmap-card.active {
  border-color: rgba(37, 99, 235, 0.4);
  background: rgba(37, 99, 235, 0.05);
}

.roadmap-card.active::after {
  content: 'In Progress';
  position: absolute;
  top: 24px; right: 24px;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.15);
  color: var(--blue-400);
  border: 1px solid rgba(37, 99, 235, 0.3);
}

/* ── CTA ─────────────────────────────────────────────────────── */
.cta-section {
  background: var(--bg-200);
  padding: 96px 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(6, 182, 212, 0.08));
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: var(--radius-xl);
  padding: 72px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 500px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta-box p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.65;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────────────────── */
footer {
  background: var(--bg-100);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 12px 0 20px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.social-link:hover {
  color: var(--text-primary);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: var(--text-secondary);
}

/* ── Scroll reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; flex-direction: column; }

  .nav-mobile-open .nav-links,
  .nav-mobile-open .nav-cta {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    background: rgba(2,8,16,0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 16px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    gap: 8px;
    z-index: 99;
  }

  .flows-grid { grid-template-columns: 1fr; }
  .reserves-layout { grid-template-columns: 1fr; }
  .multichain-layout { grid-template-columns: 1fr; }
  .transparency-levels { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .hero-stat { min-width: 120px; padding: 16px 20px; }
  .hero-stat-value { font-size: 22px; }

  .cta-box { padding: 48px 24px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; }
  .hero-stat { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .hero-stat:last-child { border-bottom: none; }
}