:root {
  --blue-primary: #004f9e;
  --blue-light: #1a7fd4;
  --blue-accent: #3da0f5;
  --blue-glow: #5eb8ff;
  --blue-pale: #b8deff;
  --white: #ffffff;
  --off-white: #f0f4f8;
  --grey-light: #d8e2ec;
  --grey-mid: #8a9bb0;
  --grey-dark: #4a5568;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --bg-primary: #f0f4f8;
  --bg-secondary: #ffffff;
  --bg-panel: #ffffff;
  --bg-panel-alt: #e8eef5;
  --border-panel: rgba(0, 79, 158, 0.15);
  --border-accent: var(--blue-primary);
  --shadow-panel: 0 2px 20px rgba(0, 79, 158, 0.08);
  --shadow-hover: 0 8px 32px rgba(0, 79, 158, 0.15);
  --glow: 0 0 20px rgba(26, 127, 212, 0.2);
  --panel-clip: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  --panel-clip-sm: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  --panel-clip-lg: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-display: 'Orbitron', var(--font-main);
  --transition-fast: 0.15s ease;
  --transition-med: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 64px;
}

[data-theme="dark"] {
  --text-primary: #e2e8f0;
  --text-secondary: #a0aec0;
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-panel: #141b2d;
  --bg-panel-alt: #1a2332;
  --border-panel: rgba(26, 127, 212, 0.2);
  --border-accent: var(--blue-light);
  --shadow-panel: 0 2px 20px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 32px rgba(26, 127, 212, 0.2);
  --glow: 0 0 30px rgba(26, 127, 212, 0.3);
  --off-white: #1a2332;
  --grey-light: #2d3748;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-med), color var(--transition-med);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--blue-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--blue-accent); }
a:focus-visible {
  outline: 2px solid var(--blue-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

button:focus-visible {
  outline: 2px solid var(--blue-accent);
  outline-offset: 2px;
}

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }
h4 { font-size: clamp(1rem, 2vw, 1.2rem); }

p { max-width: 70ch; }

.font-mono { font-family: var(--font-mono); }
.font-display { font-family: var(--font-display); }

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

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  clip-path: var(--panel-clip);
  box-shadow: var(--shadow-panel);
  transition: box-shadow var(--transition-med), transform var(--transition-med);
  position: relative;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-primary), var(--blue-accent), transparent);
}

.panel:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.panel-sm { clip-path: var(--panel-clip-sm); }
.panel-lg { clip-path: var(--panel-clip-lg); }

.panel-border {
  position: relative;
  padding: 1.5rem;
  border-left: 3px solid var(--blue-primary);
  background: var(--bg-panel);
}

.panel-border::before {
  content: '';
  position: absolute;
  top: 0;
  left: -3px;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--blue-accent), var(--blue-primary));
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-light);
  border: 1px solid var(--border-panel);
  clip-path: var(--panel-clip-sm);
  background: var(--bg-panel-alt);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--white);
  background: var(--blue-primary);
  border: 1px solid var(--blue-light);
  clip-path: var(--panel-clip-sm);
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  background: var(--blue-light);
  box-shadow: var(--glow);
  transform: translateY(-1px);
  color: var(--white);
}

.btn-primary:hover::after { left: 100%; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-light);
  background: transparent;
  border: 1px solid var(--border-panel);
  clip-path: var(--panel-clip-sm);
  transition: all var(--transition-med);
}

.btn-ghost:hover {
  border-color: var(--blue-light);
  background: rgba(0, 79, 158, 0.05);
  color: var(--blue-accent);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--blue-light);
  margin-bottom: 1rem;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--blue-light);
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-panel);
  min-width: 40px;
}

.scanline {
  position: relative;
  overflow: hidden;
}

.scanline::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-glow), transparent);
  animation: scanline 4s linear infinite;
  opacity: 0.3;
  pointer-events: none;
}

@keyframes scanline {
  0% { top: 0; }
  100% { top: 100%; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (max-width: 768px) {
  :root { --nav-height: 56px; }
  .container, .container-wide { padding: 0 1rem; }
}