/* A-Share Market Intelligence Platform — Landing Page */
:root {
  --bg-primary: #0a0f1a;
  --bg-card: #1a1a2e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --accent-cyan: #00e5ff;
  --accent-buy: #ef5350;
  --accent-sell: #26a69a;
  --border: #2a2a3e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero .highlight {
  color: var(--accent-cyan);
}

.tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 32px;
}

.how-it-works {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 28px;
  opacity: 0.85;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}

.btn-primary {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
}

.btn-primary:hover,
.btn-secondary:hover {
  opacity: 0.85;
}

/* Hero CTA group */
.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Dashboard Preview */
.preview {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

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

.preview-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.preview-card h4 {
  color: var(--accent-cyan);
  margin-bottom: 8px;
  font-size: 1rem;
}

.preview-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pro-badge {
  display: inline-block;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  text-transform: uppercase;
  vertical-align: middle;
}

/* Coming soon button */
.btn-coming-soon {
  opacity: 0.6;
  cursor: default;
  position: relative;
}

.btn-coming-soon:hover {
  opacity: 0.6;
}

/* Section headings */
section h2 {
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: 12px;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Features / Signals */
.features {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.signal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 32px;
}

.group-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.buy-label { color: var(--accent-buy); }
.sell-label { color: var(--accent-sell); }

.signal-card {
  display: flex;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.signal-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.signal-group:first-child .signal-icon { color: var(--accent-buy); }
.signal-group:last-child .signal-icon { color: var(--accent-sell); }

.signal-card h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.signal-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Sectors */
.sectors {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.sector-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sector-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.sector-card h4 {
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.sector-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Pricing */
.pricing {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 700px;
  margin: 32px auto 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
  text-align: center;
}

.pricing-card.pro {
  border-color: var(--accent-cyan);
}

.pricing-card h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 24px;
}

.pricing-card li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.pricing-card li::before {
  content: "\2713 ";
  color: var(--accent-cyan);
}

/* Disclaimer */
.disclaimer {
  padding: 32px 0;
  text-align: center;
}

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

/* Tooltips for jargon */
.tooltip {
  border-bottom: 1px dotted var(--text-secondary);
  cursor: help;
  position: relative;
}
.tooltip:hover::after,
.tooltip:focus::after,
.tooltip-active::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  max-width: 280px;
  white-space: normal;
  z-index: 10;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.tooltip:hover::before,
.tooltip:focus::before,
.tooltip-active::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: #333;
  z-index: 10;
  pointer-events: none;
}

/* Pro pricing note */
.pro-note {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .signal-grid,
  .sector-cards,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}