.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:root {
  --gold: #B89B5E;
  --gold-light: #D4B878;
  --gold-dark: #96793E;
  --navy-deep: #0B1929;
  --navy: #173D6E;
  --navy-mid: #122D52;
  --navy-light: #1E4D7E;
  /* Light mode background tokens */
  --bg: #F5F7FB;
  --bg-card: #FFFFFF;
  --bg-card-hover: #EEF3FF;
  --border: rgba(23, 61, 110, 0.18);
  --border-hover: rgba(184, 155, 94, 0.5);
  --accent-blue: #2B6CB0;
  --accent-cyan: #3D8EC9;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-delay-1 {
  0%, 15% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-delay-2 {
  0%, 30% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(184, 155, 94, 0.1), 0 0 60px rgba(43, 108, 176, 0.05); }
  50% { box-shadow: 0 0 30px rgba(184, 155, 94, 0.2), 0 0 80px rgba(43, 108, 176, 0.1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes spin-rev {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

.animate-spin-slow {
  animation: spin-slow 22s linear infinite;
}

@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(61, 142, 201, 0.08); transform: scale(1); }
  50%       { box-shadow: 0 0 20px rgba(61, 142, 201, 0.22); transform: scale(1.06); }
}

@keyframes core-pulse {
  0%, 100% { box-shadow: 0 0 30px rgba(61,142,201,0.12), inset 0 1px 0 rgba(255,255,255,0.05); }
  50%       { box-shadow: 0 0 48px rgba(61,142,201,0.25), 0 0 80px rgba(184,155,94,0.08), inset 0 1px 0 rgba(255,255,255,0.05); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.2; }
}

@keyframes scan-y {
  0%   { top: 0%; opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

@keyframes net-pulse {
  0%, 100% { opacity: 0.08; }
  50% { opacity: 0.16; }
}

.animate-fade-in { animation: fade-in 0.8s ease-out both; }
.animate-fade-in-d1 { animation: fade-in-delay-1 1s ease-out both; }
.animate-fade-in-d2 { animation: fade-in-delay-2 1.2s ease-out both; }

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.gradient-text {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, var(--gold) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-blue {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #63B3ED 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 0 30px rgba(43, 108, 176, 0.12);
}

.card-featured {
  background: linear-gradient(135deg, rgba(224, 231, 255, 0.4) 0%, var(--bg-card) 100%);
  border: 1px solid rgba(43, 108, 176, 0.25);
}
.card-featured:hover {
  border-color: rgba(184, 155, 94, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 0 40px rgba(184, 155, 94, 0.12);
}

.card-gold {
  background: linear-gradient(135deg, rgba(184, 155, 94, 0.06) 0%, var(--bg-card) 100%);
  border: 1px solid rgba(184, 155, 94, 0.15);
}
.card-gold:hover {
  border-color: rgba(184, 155, 94, 0.4);
}

.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(224, 231, 255, 0.5) 0%, rgba(147, 197, 253, 0.2) 100%);
  border: 1px solid rgba(43, 108, 176, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 24px;
  flex-shrink: 0;
  transition: all 0.3s;
}
.card:hover .icon-box,
.group:hover .icon-box {
  background: linear-gradient(135deg, rgba(184, 155, 94, 0.15) 0%, rgba(184, 155, 94, 0.05) 100%);
  border-color: rgba(184, 155, 94, 0.25);
  color: var(--gold);
}

.icon-box-lg {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  font-size: 32px;
}

.icon-box-gold {
  background: linear-gradient(135deg, rgba(184, 155, 94, 0.15) 0%, rgba(184, 155, 94, 0.05) 100%);
  border-color: rgba(184, 155, 94, 0.2);
  color: var(--gold);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  color: var(--navy-deep);
  font-weight: 700;
  border-radius: 12px;
  transition: all 0.3s;
  text-decoration: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(184, 155, 94, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, #E0E7FF 0%, #DBEAFE 100%);
  color: var(--navy);
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid rgba(43, 108, 176, 0.3);
  transition: all 0.3s;
  text-decoration: none;
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 108, 176, 0.15);
  border-color: rgba(43, 108, 176, 0.5);
  background: linear-gradient(135deg, #C7D2FE 0%, #BFDBFE 100%);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-weight: 700;
  border-radius: 12px;
  transition: all 0.3s;
  text-decoration: none;
}
.btn-outline:hover {
  background: rgba(184, 155, 94, 0.1);
  transform: translateY(-2px);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(224, 231, 255, 0.6);
  border: 1px solid rgba(43, 108, 176, 0.3);
  color: var(--navy);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.section-label-gold {
  background: rgba(184, 155, 94, 0.1);
  border-color: rgba(184, 155, 94, 0.2);
  color: var(--gold);
}

.tech-grid {
  background-image:
    radial-gradient(circle at 1px 1px, rgba(43, 108, 176, 0.12) 1px, transparent 0);
  background-size: 32px 32px;
  animation: net-pulse 4s ease-in-out infinite;
}

.network-bg {
  background:
    linear-gradient(135deg, rgba(43, 108, 176, 0.06) 25%, transparent 25%),
    linear-gradient(225deg, rgba(43, 108, 176, 0.06) 25%, transparent 25%),
    linear-gradient(315deg, rgba(43, 108, 176, 0.06) 25%, transparent 25%),
    linear-gradient(45deg, rgba(43, 108, 176, 0.06) 25%, transparent 25%);
  background-size: 60px 60px;
  background-position: 0 0, 0 30px, 30px -30px, 30px 0;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(43, 108, 176, 0.25), transparent);
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.check-item .mdi {
  color: var(--gold);
  font-size: 20px;
  margin-top: 2px;
  flex-shrink: 0;
}

.tag {
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(224, 231, 255, 0.6);
  border: 1px solid rgba(43, 108, 176, 0.3);
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
}

.tag-gold {
  background: rgba(184, 155, 94, 0.1);
  border-color: rgba(184, 155, 94, 0.2);
  color: var(--gold);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}