:root {
  --navy: #143F74;
  --blue: #2F78AD;
  --cyan: #6EB0C2;
  --bg: #F8FAFC;
  --surface: #F1F5F9;
  --text: #0F172A;
  --text2: #334155;
  --border: #E2E8F0;
  --accent: #2F78AD;
  --success: #12B76A;
  --danger: #F04438;
  --warning: #F79009;
  --neutral: #64748B;
  --highlight-blue: #00BFFF;
  --core-orange: #FF8C00;

  --l1: #E63946;
  --l2: #1D3557;
  --l3: #2A9D8F;
  --l4: #D4A017;
  --l5: #457B9D;
  --l6: #7B2CBF;

  --font-display: "Noto Serif SC", Georgia, serif;
  --font-body: "DM Sans", "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, monospace;

  --compliance-h: 40px;
  --nav-h: 56px;
  --ticker-h: 38px;
  --radius: 14px;

  --learn-night: #eff6ff;
  --learn-night-2: #f5f3ff;
  --learn-panel: rgba(255,255,255,0.88);
  --learn-line: rgba(37,99,235,0.12);
  --learn-gold: #d97706;
  --learn-gold-soft: #fff7e8;
  --learn-ice: #eff6ff;
  --learn-glow: rgba(37,99,235,0.14);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neutral);
}

.compliance-bar {
  background: linear-gradient(90deg, #7c2d12, #991b1b, #7c2d12);
  border-bottom: 1px solid rgba(255,255,255,0.15);
  padding: 6px 20px;
  text-align: center;
  font-size: 11px;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.2px;
  line-height: 1.5;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
}

.compliance-bar strong {
  color: #fca5a5;
}

.compliance-bar a {
  color: #fde68a;
  text-decoration: none;
}

.compliance-bar a:hover {
  text-decoration: underline;
}

.nav {
  position: fixed;
  top: var(--compliance-h);
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: linear-gradient(135deg, var(--navy) 0%, #1a4f8a 100%);
  border-bottom: 3px solid var(--cyan);
  display: flex;
  align-items: center;
  padding: 0 24px;
  box-shadow: 0 2px 20px rgba(20,63,116,0.3);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.nav-brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse-dot 2s ease-in-out infinite;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  letter-spacing: 0.3px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(110,176,194,0.15);
}

.nav-links a.nav-active {
  color: #fff;
  background: rgba(110,176,194,0.25);
  border: 1px solid rgba(110,176,194,0.3);
}

.nav-links a .nav-icon {
  font-size: 14px;
  line-height: 1;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-platform {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(110,176,194,0.15);
  border: 1px solid rgba(110,176,194,0.25);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.3px;
  transition: background 0.2s, border-color 0.2s;
}

.nav-platform:hover {
  background: rgba(110,176,194,0.25);
  border-color: rgba(110,176,194,0.4);
  color: #fff;
}

.nav-platform svg {
  flex-shrink: 0;
}

.nav-clock {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.9);
  font-family: var(--font-mono);
  font-size: 13px;
}

.market-badge {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.market-open {
  background: rgba(18,183,106,0.2);
  color: var(--success);
  border: 1px solid rgba(18,183,106,0.3);
}

.market-closed {
  background: rgba(240,68,56,0.15);
  color: var(--danger);
  border: 1px solid rgba(240,68,56,0.25);
}

.nav-hamburger {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.8);
  border-radius: 1px;
  transition: all 0.3s;
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: calc(var(--compliance-h) + var(--nav-h));
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10,22,40,0.97);
  backdrop-filter: blur(12px);
  z-index: 99;
  padding: 24px;
  flex-direction: column;
  gap: 8px;
  animation: fade-in-up 0.2s ease-out;
}

.nav-mobile-menu.show {
  display: flex;
}

.nav-mobile-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: all 0.2s;
}

.nav-mobile-menu a:hover,
.nav-mobile-menu a.nav-active {
  color: #fff;
  background: rgba(110,176,194,0.15);
}

.nav-mobile-menu a .nav-icon {
  font-size: 20px;
}

.footer-mega {
  --footer-bg: #0a1628;
  --footer-top-border: transparent;
  --footer-inner-border: rgba(255,255,255,0.06);
  --footer-title: #fff;
  --footer-text: rgba(255,255,255,0.4);
  --footer-link: rgba(255,255,255,0.4);
  --footer-bottom-text: rgba(255,255,255,0.25);
  --footer-bottom-link: rgba(255,255,255,0.4);
  --footer-icon: var(--blue);
  --footer-meta: rgba(255,255,255,0.35);
  --footer-meta-muted: rgba(255,255,255,0.3);
  --footer-meta-note: rgba(255,255,255,0.4);
  --footer-meta-link: rgba(255,255,255,0.3);
  --footer-danger: rgba(239,68,68,0.6);

  background: var(--footer-bg);
  padding: 48px 32px 0;
  border-top: 1px solid var(--footer-top-border);
}

.footer-mega.footer-light {
  --footer-bg: linear-gradient(180deg, #f8fafc 0%, #eef4ff 100%);
  --footer-top-border: var(--border);
  --footer-inner-border: var(--border);
  --footer-title: var(--text);
  --footer-text: var(--neutral);
  --footer-link: var(--neutral);
  --footer-bottom-text: var(--neutral);
  --footer-bottom-link: var(--neutral);
  --footer-meta: #64748b;
  --footer-meta-muted: #64748b;
  --footer-meta-note: #64748b;
  --footer-meta-link: #64748b;
  --footer-danger: #dc2626;
}

.footer-mega-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--footer-inner-border);
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--footer-title);
  margin-bottom: 16px;
}

.footer-col a,
.footer-col span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--footer-text);
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s;
}

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

.footer-col .footer-icon {
  color: var(--footer-icon);
  flex-shrink: 0;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--footer-bottom-text);
}

.footer-bottom a {
  color: var(--footer-bottom-link);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--cyan);
}

.footer-bottom.footer-bottom-stacked {
  flex-direction: column;
  gap: 10px;
  text-align: center;
  padding: 24px 20px;
}

.footer-meta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 11px;
  color: var(--footer-meta);
}

.footer-meta-row.footer-meta-row-muted {
  color: var(--footer-meta-muted);
}

.footer-meta-row.footer-meta-row-links {
  align-items: center;
}

.footer-meta-note {
  font-size: 12px;
  color: var(--footer-meta-note);
}

.footer-meta-link {
  font-size: 11px;
  color: var(--footer-meta-link);
  text-decoration: none;
}

.footer-meta-link:hover {
  color: var(--cyan);
}

.footer-meta-link.footer-meta-link-danger {
  color: var(--footer-danger);
}

/* Particle canvas (shared across pages) */
#particleCanvas {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.3);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .nav-links {
    gap: 2px;
  }

  .nav-links a {
    padding: 5px 10px;
    font-size: 12px;
  }

  .footer-mega-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav {
    padding: 0 16px;
  }
}

@media (max-width: 640px) {
  .footer-mega {
    padding: 32px 16px 0;
  }

  .footer-mega-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}