/* ============================================================
   SCU — Structure of Creation in the Universe
   Government-grade research publication aesthetic
   ============================================================ */

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

:root {
  --navy-900: #060d1a;
  --navy-800: #0b1527;
  --navy-700: #101e36;
  --navy-600: #162844;
  --navy-500: #1c3254;
  --blue-accent: #3a7bd5;
  --blue-light: #5a9cf5;
  --gold: #c9a84c;
  --gold-light: #e0c36a;
  --gold-dim: #8a7434;
  --text-primary: #e2e4e8;
  --text-secondary: #9aa0ad;
  --text-muted: #6b7280;
  --border-color: rgba(201, 168, 76, 0.15);
  --border-bright: rgba(201, 168, 76, 0.3);
  --card-bg: rgba(11, 21, 39, 0.6);
  --card-hover: rgba(22, 40, 68, 0.8);
  --glass: rgba(255,255,255,0.03);
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --max-width: 1280px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background: var(--navy-900);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- Starfield Background --- */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background:
    radial-gradient(1.5px 1.5px at 20% 30%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.2px 1.2px at 60% 20%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 10% 80%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1.3px 1.3px at 50% 90%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 50%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1.1px 1.1px at 70% 40%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(0.8px 0.8px at 15% 55%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(0.9px 0.9px at 85% 75%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 15%, rgba(255,255,255,0.18) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* --- Top Agency Banner --- */
.agency-banner {
  background: var(--navy-800);
  border-bottom: 1px solid var(--border-color);
  padding: 6px 0;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  z-index: 100;
}

.agency-banner .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.agency-banner a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.agency-banner a:hover { color: var(--gold); }

/* --- Header / Navigation --- */
.site-header {
  background: rgba(6, 13, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 2px solid var(--gold-dim);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-emblem {
  width: 44px;
  height: 44px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-emblem::before {
  content: '';
  width: 36px;
  height: 36px;
  border: 1px solid var(--gold-dim);
  border-radius: 50%;
  position: absolute;
}

.logo-emblem svg {
  width: 22px;
  height: 22px;
  fill: var(--gold);
  position: relative;
  z-index: 1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-acronym {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.15em;
}

.logo-full {
  font-size: 0.6rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 2px; }

.nav-link {
  position: relative;
  padding: 8px 20px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--transition);
  border-radius: 4px;
}

.nav-link:hover { color: var(--text-primary); background: var(--glass); }

.nav-link.active {
  color: var(--gold);
  background: rgba(201, 168, 76, 0.08);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-bright);
  color: var(--gold);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* --- Hero Sections --- */
.hero {
  position: relative;
  padding: 100px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center top, rgba(58, 123, 213, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  font-size: 0.7rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 28px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 .accent { color: var(--gold); }

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

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

.hero-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-meta-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--gold);
  font-weight: 600;
}

.hero-meta-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- Page Hero (Subpages) --- */
.page-hero {
  padding: 80px 0 50px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, rgba(58,123,213,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero .hero-badge { margin-bottom: 20px; }

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.6;
}

/* --- Section Styles --- */
.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section + .section { border-top: 1px solid var(--border-color); }

.section-header {
  margin-bottom: 50px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding: 40px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--gold-dim), var(--gold), var(--gold-dim), transparent);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 60px;
  position: relative;
}

.timeline-item:nth-child(odd) { flex-direction: row-reverse; }

.timeline-item:nth-child(odd) .timeline-content { text-align: right; padding-right: 50px; padding-left: 0; }
.timeline-item:nth-child(even) .timeline-content { padding-left: 50px; }

.timeline-content {
  width: 50%;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: var(--navy-900);
  border: 2px solid var(--gold);
  border-radius: 50%;
  z-index: 2;
}

.timeline-marker::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  background: var(--card-hover);
  border-color: var(--border-bright);
  transform: translateY(-2px);
}

.card:hover::before { opacity: 1; }

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid var(--border-bright);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--gold);
  color: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gold-dim);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

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

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--gold);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.03em;
  transition: gap var(--transition);
}

.card-link:hover { gap: 10px; }

/* --- Stage Blocks --- */
.stage-block {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 48px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.stage-block::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold), var(--blue-accent));
}

.stage-header {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 32px;
}

.stage-number-badge {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: rgba(201, 168, 76, 0.1);
  border: 1.5px solid var(--gold-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--gold);
  font-weight: 700;
}

.stage-title-group h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stage-title-group .tagline {
  font-size: 0.85rem;
  color: var(--gold);
  font-style: italic;
}

.stage-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.stage-narrative {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.stage-narrative p + p { margin-top: 16px; }

.stage-sidebar {}

.key-facts {
  background: rgba(201, 168, 76, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
}

.key-facts h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.fact-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

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

.fact-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.fact-value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gold-light);
  font-weight: 500;
}

/* --- Equation Blocks --- */
.equation-block {
  background: rgba(58, 123, 213, 0.06);
  border: 1px solid rgba(58, 123, 213, 0.15);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 20px 0;
  text-align: center;
}

.equation {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--blue-light);
  margin-bottom: 6px;
}

.equation-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  margin: 40px 0;
}

.stat-box {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Patterns Grid (cross-cutting) --- */
.pattern-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 28px;
  text-align: center;
  transition: all var(--transition);
}

.pattern-card:hover {
  border-color: var(--border-bright);
  background: var(--card-hover);
  transform: translateY(-3px);
}

.pattern-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  margin-bottom: 12px;
}

.pattern-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--gold);
  color: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.stat-value svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold);
  color: var(--gold);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: block;
  margin: 0 auto 4px;
}

.pattern-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pattern-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- Questions Section --- */
.question-block {
  background: linear-gradient(135deg, rgba(58, 123, 213, 0.06), rgba(201, 168, 76, 0.04));
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 36px;
  margin-bottom: 24px;
  transition: border-color var(--transition);
}

.question-block:hover { border-color: var(--border-bright); }

.question-block h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--gold-light);
  margin-bottom: 12px;
}

.question-block p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- Dividers --- */
.section-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 60px 0;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-bright), transparent);
}

/* --- Footer --- */
.site-footer {
  background: var(--navy-800);
  border-top: 2px solid var(--gold-dim);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-acronym {
  font-size: 1.1rem;
  margin-bottom: 12px;
  display: block;
}

.footer-brand p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 300px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--gold-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--gold); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.footer-classification {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gold-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
}

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .stage-body { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-item:nth-child(odd) { flex-direction: column; padding-left: 50px; }
  .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content {
    width: 100%;
    text-align: left;
    padding-left: 0;
    padding-right: 0;
  }
  .timeline-marker { left: 20px; }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(6, 13, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 16px; width: 100%; }
  .nav-link.active::after { display: none; }
  .hero { padding: 60px 0 50px; }
  .hero-meta { gap: 24px; }
  .section { padding: 50px 0; }
  .stage-block { padding: 28px; }
  .stage-header { flex-direction: column; }
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 1.2rem; }
  .stats-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-meta { flex-direction: column; gap: 16px; }
  .stats-row { grid-template-columns: 1fr; }
}

/* --- Component Variants --- */
.stat-box-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

.math-basis {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 16px;
}

.stage-narrative--narrow {
  max-width: 800px;
}

.closing-quote {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  margin-top: 24px;
  color: var(--gold);
}

.card--nav {
  text-decoration: none;
}

/* --- Utility --- */
.text-gold { color: var(--gold); }
.text-blue { color: var(--blue-light); }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }