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

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

body {
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input, textarea, select {
  font-family: inherit;
}

::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--bg-0);
}

::-webkit-scrollbar-thumb {
  background: var(--border-m);
  border-radius: 99px;
}

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

:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.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;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: var(--z-cursor);
  background: var(--accent-blue);
  color: var(--bg-0);
  padding: 10px 20px;
  border-radius: 0 0 var(--r-md) var(--r-md);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 0;
  outline: none;
}

#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-progress);
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg,
    var(--accent-blue) 0%,
    var(--accent-teal) 50%,
    var(--accent-purple) 100%
  );
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(59, 158, 255, 0.6);
  pointer-events: none;
}

#cursor-dot {
  position: fixed;
  pointer-events: none;
  z-index: var(--z-cursor);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 10px var(--accent-blue), 0 0 20px rgba(59, 158, 255, 0.4);
  transform: translate(-50%, -50%);
  will-change: left, top;
  opacity: 0;
  transition:
    width var(--t-fast) var(--ease),
    height var(--t-fast) var(--ease),
    background var(--t-fast),
    opacity 0.3s;
}

#cursor-ring {
  position: fixed;
  pointer-events: none;
  z-index: calc(var(--z-cursor) - 1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(59, 158, 255, 0.45);
  transform: translate(-50%, -50%);
  will-change: left, top;
  opacity: 0;
  transition:
    width 0.22s var(--ease),
    height 0.22s var(--ease),
    border-color 0.22s,
    opacity 0.3s;
}

#cursor-dot.ready  { opacity: 1; }
#cursor-ring.ready { opacity: 1; }
#cursor-dot.hover  { width: 10px; height: 10px; background: var(--accent-teal); }
#cursor-ring.hover { width: 54px; height: 54px; border-color: rgba(0, 229, 184, 0.5); }
#cursor-dot.clicking  { width: 4px; height: 4px; }
#cursor-ring.clicking { width: 28px; height: 28px; }

#star-canvas {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  display: block;
}

.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  overflow: hidden;
}

.aurora-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0;
  animation:
    auroraOrbDrift 28s ease-in-out infinite alternate,
    auroraOrbIn 3s ease forwards;
}

.aurora-orb:nth-child(1) {
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(59,158,255,.20) 0%, transparent 65%);
  top: -240px; right: -180px;
  animation-duration: 22s, 3s;
  animation-delay: 0.3s, 0.3s;
}

.aurora-orb:nth-child(2) {
  width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(0,229,184,.16) 0%, transparent 65%);
  bottom: 8%; left: -200px;
  animation-duration: 30s, 3s;
  animation-delay: -12s, 0s;
}

.aurora-orb:nth-child(3) {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(139,114,255,.14) 0%, transparent 65%);
  top: 50%; left: 52%;
  animation-duration: 38s, 3s;
  animation-delay: -20s, 0s;
}

.aurora-orb:nth-child(4) {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(26,240,196,.10) 0%, transparent 65%);
  top: 30%; right: 20%;
  animation-duration: 45s, 3s;
  animation-delay: -8s, 0s;
}

@keyframes auroraOrbDrift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(30px, -20px) scale(1.08); }
  100% { transform: translate(50px, 40px) scale(1.14); }
}

@keyframes auroraOrbIn {
  to { opacity: 1; }
}

.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.022;
  mix-blend-mode: overlay;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  background-image:
    linear-gradient(rgba(59,158,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,158,255,.018) 1px, transparent 1px);
  background-size: 72px 72px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--t-slow) var(--ease-out),
    transform var(--t-slow) var(--ease-out);
}

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

.reveal.d1 { transition-delay: 0.05s; }
.reveal.d2 { transition-delay: 0.10s; }
.reveal.d3 { transition-delay: 0.15s; }
.reveal.d4 { transition-delay: 0.20s; }
.reveal.d5 { transition-delay: 0.25s; }

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition:
    border-color var(--t),
    background var(--t),
    box-shadow var(--t),
    transform var(--t) var(--ease);
}

.glass-card:hover {
  border-color: var(--border-m);
  background: var(--bg-card-hover);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  border: 1px solid rgba(0, 229, 184, 0.25);
  color: var(--accent-teal);
  padding: 5px 14px;
  border-radius: 99px;
  white-space: nowrap;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.page-title em {
  font-style: normal;
  color: var(--accent-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.70rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  transition: all var(--t) var(--ease-spring);
  min-height: 40px;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: rgba(59, 158, 255, 0.12);
  border: 1px solid rgba(59, 158, 255, 0.35);
  color: var(--accent-blue);
}

.btn-primary:hover {
  background: rgba(59, 158, 255, 0.22);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 158, 255, 0.22);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-m);
  color: var(--text-1);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text-0);
}

main {
  position: relative;
  z-index: var(--z-base);
}

footer {
  position: relative;
  z-index: var(--z-base);
}

header {
  position: relative;
  z-index: var(--z-nav);
}