:root {
  --canvas-bg: #060911;
  --surface-0: #0a0e1a;
  --surface-1: #101626;
  --surface-2: #162035;
  --surface-elevated: #1f2c49;
  --border-dim: rgba(255, 255, 255, 0.06);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-amber: rgba(245, 158, 11, 0.4);
  --semi-amber: #f59e0b;
  --semi-amber-glow: rgba(245, 158, 11, 0.25);
  --semi-cobalt: #38bdf8;
  --semi-emerald: #10b981;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --radius-container: 20px;
  --pad-container: 12px;
  --radius-nested-card: calc(var(--radius-container) - var(--pad-container)); 
  --radius-interactive: 8px;
  --radius-pill: 9999px;
  --surface-highlight: inset 0 1px 0 0 rgba(255, 255, 255, 0.09);
  --shadow-elevation: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: var(--canvas-bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.semi-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
.semi-header {
  background-color: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.semi-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.semi-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}
.semi-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, #d97706, #f59e0b);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.4);
}
.semi-brand-text {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}
.semi-brand-sub {
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}
.semi-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.semi-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.15s ease;
}
.semi-nav-link:hover {
  color: var(--text-primary);
}
.btn-semi {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0 1.25rem;
  border-radius: var(--radius-interactive);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--surface-highlight);
  border: 1px solid transparent;
}
.btn-semi-amber {
  background-color: var(--semi-amber);
  color: #0b0f19;
}
.btn-semi-amber:hover {
  background-color: #fbbf24;
  box-shadow: 0 0 16px var(--semi-amber-glow);
}
.btn-semi-outline {
  background-color: var(--surface-1);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}
.btn-semi-outline:hover {
  background-color: var(--surface-2);
  border-color: var(--semi-amber);
}
.semi-concentric-frame {
  background-color: var(--surface-0);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-container);
  padding: var(--pad-container);
  box-shadow: var(--surface-highlight), var(--shadow-elevation);
}
.semi-concentric-inner {
  border-radius: var(--radius-nested-card);
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem;
}
.semi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.semi-card {
  background-color: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-nested-card);
  overflow: hidden;
  box-shadow: var(--surface-highlight);
  transition: transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}
.semi-card:hover {
  transform: translateY(-3px);
  border-color: var(--semi-amber);
}
.semi-card-img {
  width: 100%;
  height: 200px;
  background-color: #0b1120;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dim);
}
.semi-badge-mono {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(6, 9, 17, 0.85);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--semi-amber);
}
.semi-card-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.semi-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}
.semi-card-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
  flex-grow: 1;
}
.demo-topbar {
  background-color: #07090e;
  color: #ffffff;
  padding: 0.6rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  position: sticky;
  top: 0;
  z-index: 10000;
  border-bottom: 1px solid rgba(245, 158, 11, 0.3);
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.semi-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
.semi-hero-title {
  font-size: clamp(1.85rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.18;
  margin-bottom: 1.25rem;
}
.semi-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-dim);
}
.semi-tab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
@media (max-width: 960px) {
  .semi-hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .semi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .semi-container {
    padding: 0 1.25rem;
  }
  .semi-nav {
    display: none;
  }
  .demo-topbar {
    padding: 0.5rem 0.85rem;
    font-size: 0.76rem;
  }
}
@media (max-width: 640px) {
  .semi-container {
    padding: 0 1rem;
  }
  .semi-grid {
    grid-template-columns: 1fr;
  }
  .semi-stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
  }
  .semi-stats-grid .stat-num {
    font-size: 1.1rem !important;
  }
  .semi-stats-grid .stat-label {
    font-size: 0.68rem !important;
    line-height: 1.2;
  }
  .semi-card-img-wrap {
    height: 180px;
  }
  .semi-tab-grid {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .uhp-validator-box {
    padding: 1.15rem 0.85rem;
  }
}