*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
 
  :root {
    --bg: #0a0a08;
    --surface: #111110;
    --card: #181816;
    --border: rgba(255,255,255,0.07);
    --accent: #c8f060;
    --accent-dim: rgba(200,240,96,0.12);
    --text: #f0ede6;
    --muted: #888880;
    --danger: #ff4a4a;
  }
 
  html { scroll-behavior: smooth; }
 
  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-weight: 300;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
  }
 
  /* noise overlay */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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)' opacity='0.035'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
  }
 
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2.5rem;
    border-bottom: 1px solid var(--border);
    background: rgba(10,10,8,0.85);
    backdrop-filter: blur(12px);
  }
 
  .logo {
    font-family: 'Space Mono', monospace;
    font-size: 0.95rem;
    color: var(--accent);
    letter-spacing: -0.02em;
  }
 
  .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }
 
  .nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
 
  .nav-links a:hover { color: var(--text); }
 
  /* hero */
  .hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
  }
 
  .hero-eyebrow {
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
 
  .hero-eyebrow::before,
  .hero-eyebrow::after {
    content: '';
    display: block;
    width: 2rem;
    height: 1px;
    background: var(--accent);
    opacity: 0.5;
  }
 
  h1 {
    font-family: 'Space Mono', monospace;
    font-size: clamp(3rem, 9vw, 7.5rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
  }
 
  h1 .strike {
    position: relative;
    color: var(--muted);
  }
 
  h1 .strike::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    top: 52%;
    height: 3px;
    background: var(--danger);
    transform: rotate(-1.5deg);
  }
 
  .hero-sub {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--muted);
    max-width: 480px;
    margin: 0 auto 3rem;
    line-height: 1.7;
    font-weight: 300;
  }
 
  .hero-sub strong {
    color: var(--text);
    font-weight: 400;
  }
 
  .cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
 
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--accent);
    color: #0a0a08;
    padding: 0.85rem 2rem;
    border-radius: 3px;
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: opacity 0.2s, transform 0.2s;
  }
 
  .btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
 
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: transparent;
    color: var(--muted);
    padding: 0.85rem 2rem;
    border-radius: 3px;
    border: 1px solid var(--border);
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s;
  }
 
  .btn-secondary:hover { color: var(--text); border-color: rgba(255,255,255,0.15); }
 
  .hero-note {
    margin-top: 1.25rem;
    font-size: 0.75rem;
    color: var(--muted);
    font-family: 'Space Mono', monospace;
  }
 
  /* scan animation */
  .scan-demo {
    position: relative;
    width: min(560px, 90vw);
    margin: 5rem auto 0;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--card);
  }
 
  .scan-demo-inner {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
 
  .cam-box {
    width: 120px;
    height: 90px;
    border-radius: 4px;
    background: #0f0f0e;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
    overflow: hidden;
  }
 
  .cam-scan-line {
    position: absolute;
    left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: scan 2s ease-in-out infinite;
  }
 
  @keyframes scan {
    0% { top: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
  }
 
  .cam-icon {
    font-size: 2rem;
    opacity: 0.2;
  }
 
  .scan-status {
    flex: 1;
  }
 
  .status-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.4rem;
  }
 
  .status-val {
    font-family: 'Space Mono', monospace;
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
  }
 
  .status-val.danger { color: var(--danger); }
 
  .bar-track {
    height: 4px;
    background: rgba(255,255,255,0.06);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.5rem;
  }
 
  .bar-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--accent);
    animation: fillup 3s ease-in-out infinite alternate;
    width: 0%;
  }
 
  .bar-fill.danger-fill {
    background: var(--danger);
    animation: fillup-danger 3s ease-in-out infinite alternate;
  }
 
  @keyframes fillup {
    0% { width: 10%; }
    100% { width: 78%; }
  }
 
  @keyframes fillup-danger {
    0% { width: 78%; }
    100% { width: 98%; }
  }
 
  .alert-badge {
    display: inline-block;
    background: rgba(255,74,74,0.15);
    color: var(--danger);
    border: 1px solid rgba(255,74,74,0.3);
    border-radius: 3px;
    padding: 0.2rem 0.6rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    animation: pulse-badge 1.5s ease-in-out infinite;
  }
 
  @keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }
 
  /* sections */
  section {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: 6rem 2rem;
  }
 
  .section-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
  }
 
  h2 {
    font-family: 'Space Mono', monospace;
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
  }
 
  .divider {
    border: none;
    border-top: 1px solid var(--border);
    max-width: 960px;
    margin: 0 auto;
  }
 
  /* how it works */
  .steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
  }
 
  .step-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1.75rem 1.5rem;
    position: relative;
  }
 
  .step-num {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--accent);
    opacity: 0.7;
    margin-bottom: 0.75rem;
  }
 
  .step-title {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.3;
  }
 
  .step-desc {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.6;
  }
 
  /* install section */
  .install-block {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 2.5rem;
  }
 
  .install-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
  }
 
  .dot {
    width: 10px; height: 10px;
    border-radius: 50%;
  }
 
  .dot-r { background: #ff5f57; }
  .dot-y { background: #febc2e; }
  .dot-g { background: #28c840; }
 
  .install-steps {
    padding: 1.5rem 1.25rem;
    list-style: none;
    counter-reset: install-step;
  }
 
  .install-steps li {
    counter-increment: install-step;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.6rem 0;
    font-size: 0.9rem;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
  }
 
  .install-steps li:last-child { border-bottom: none; }
 
  .install-steps li::before {
    content: counter(install-step);
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-dim);
    border-radius: 2px;
    width: 22px; height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
  }
 
  .install-steps li strong {
    color: var(--text);
    font-weight: 400;
  }
 
  /* download */
  .download-section {
    text-align: center;
    padding: 7rem 2rem;
  }
 
  .download-section h2 {
    margin-bottom: 0.75rem;
  }
 
  .platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--accent-dim);
    border: 1px solid rgba(200,240,96,0.2);
    border-radius: 3px;
    padding: 0.3rem 0.75rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 2rem;
  }
 
  .download-note {
    margin-top: 1rem;
    font-size: 0.78rem;
    color: var(--muted);
    font-family: 'Space Mono', monospace;
  }
 
  /* footer */
  footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
  }
 
  footer .logo { font-size: 0.8rem; }
 
  footer p {
    font-size: 0.78rem;
    color: var(--muted);
  }
 
  footer a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
  }
 
  footer a:hover { color: var(--text); }
 
  /* animations on load */
  @keyframes fadein {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
 
  .fade-in {
    opacity: 0;
    animation: fadein 0.7s ease forwards;
  }
 
  .delay-1 { animation-delay: 0.1s; }
  .delay-2 { animation-delay: 0.25s; }
  .delay-3 { animation-delay: 0.4s; }
  .delay-4 { animation-delay: 0.55s; }
  .delay-5 { animation-delay: 0.7s; }