:root {
    --ink: #fff;
    --paper: #191127;
    --signal: #883CF0;
    --pulse: #7c3aed;
    --grid: #e0dbd0;
    --mid: #d6d6d6;
    --card-bg: #23133a;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: 'Syne', sans-serif;
    background: var(--paper);
    color: var(--ink);
    overflow-x: hidden;
    cursor: crosshair;
  }

  /* ───── NOISE OVERLAY ───── */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: .6;
  }

  /* ───── NAV ───── */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    background: #180f26;
    border-bottom: 1.5px solid #3a1c63;
    mix-blend-mode: normal;
  }

  .nav-logo {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: .06em;
    display: flex; align-items: center; gap: .5rem;
  }

  .nav-logo .dot {
    width: 10px; height: 10px;
    background: var(--signal);
    border-radius: 50%;
    animation: blink 1.4s ease-in-out infinite;
  }

  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:.2} }

  .nav-links {
    display: flex; gap: 2.5rem;
    list-style: none;
    font-size: .8rem;
    letter-spacing: .12em;
    text-transform: uppercase;
  }

  .nav-links a {
    text-decoration: none;
    color: var(--ink);
    font-family: 'Space Mono', monospace;
    transition: color .2s;
  }

  .nav-links a:hover { color: var(--signal); }

  .nav-cta {
    background: var(--ink);
    color: var(--paper) !important;
    padding: .45rem 1.2rem;
    font-family: 'Space Mono', monospace;
    font-size: .75rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    transition: background .2s, color .2s;
    border: 1.5px solid #3a1c63;
  }

  .nav-cta:hover { background: var(--signal) !important; border-color: var(--signal); color: var(--paper) !important; }

  /* ───── HERO ───── */
  #hero {
    min-height: 100vh;
    padding-top: 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1.5px solid #3a1c63;
    overflow: hidden;
  }

  .hero-left {
    padding: 6rem 3rem 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1.5px solid #3a1c63;
    position: relative;
  }

  .hero-tag {
    font-family: 'Space Mono', monospace;
    font-size: .72rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--signal);
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: .6rem;
  }

  .hero-tag::before {
    content: '';
    display: inline-block;
    width: 24px; height: 1.5px;
    background: var(--signal);
  }

  .hero-h1 {
    font-size: clamp(3.5rem, 6vw, 6rem);
    font-weight: 800;
    line-height: .95;
    letter-spacing: -.03em;
    margin-bottom: 2rem;
  }

  .hero-h1 em {
    font-style: normal;
    color: var(--signal);
    display: block;
  }

  .hero-desc {
    font-size: 1.05rem;
    color: var(--mid);
    max-width: 440px;
    line-height: 1.65;
    margin-bottom: 2.5rem;
  }

  .hero-btns {
    display: flex; gap: 1rem; flex-wrap: wrap;
  }

  .btn-primary {
    background: var(--ink);
    color: var(--paper);
    padding: .85rem 2.2rem;
    font-family: 'Space Mono', monospace;
    font-size: .8rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1.5px solid #3a1c63;
    transition: background .2s, color .2s;
    cursor: pointer;
    display: inline-block;
  }

  .btn-primary:hover { background: var(--signal); border-color: var(--signal); }

  .btn-outline {
    background: transparent;
    color: var(--ink);
    padding: .85rem 2.2rem;
    font-family: 'Space Mono', monospace;
    font-size: .8rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1.5px solid #3a1c63;
    transition: background .2s, color .2s;
    cursor: pointer;
    display: inline-block;
  }

  .btn-outline:hover { background: var(--ink); color: var(--paper); }

  .hero-stats {
    display: flex; gap: 2.5rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px dashed #3a1c63;
  }

  .stat-item .num {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--ink);
  }

  .stat-item .label {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--mid);
  }

  /* ───── QR CANVAS SIDE ───── */
  .hero-right {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #23133a;
    position: relative;
    overflow: hidden;
  }

  .qr-grid-bg {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(var(--paper) 1px, transparent 1px),
      linear-gradient(90deg, var(--paper) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: .06;
  }

  .qr-live {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .qr-frame {
    width: 280px; height: 280px;
    position: relative;
  }

  .qr-frame canvas {
    width: 100%; height: 100%;
    image-rendering: pixelated;
  }

  .qr-corner {
    position: absolute;
    width: 28px; height: 28px;
    border-color: var(--signal);
    border-style: solid;
  }

  .qr-corner.tl { top: -6px; left: -6px; border-width: 3px 0 0 3px; }
  .qr-corner.tr { top: -6px; right: -6px; border-width: 3px 3px 0 0; }
  .qr-corner.bl { bottom: -6px; left: -6px; border-width: 0 0 3px 3px; }
  .qr-corner.br { bottom: -6px; right: -6px; border-width: 0 3px 3px 0; }

  .qr-scan-line {
    position: absolute;
    left: 0; right: 0;
    height: 2px;
    background: var(--signal);
    box-shadow: 0 0 8px var(--signal), 0 0 20px var(--signal);
    animation: scan 2.5s ease-in-out infinite;
    top: 0;
  }

  @keyframes scan {
    0%   { top: 0; opacity: 1; }
    50%  { top: calc(100% - 2px); opacity: 1; }
    100% { top: 0; opacity: 1; }
  }

  .qr-url-input {
    display: flex;
    background: #ffffff;
    border: 1px solid #3a1c63;
    overflow: hidden;
    width: 320px;
  }

  .qr-url-input input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    padding: .7rem 1rem;
    color: var(--paper);
    font-family: 'Space Mono', monospace;
    font-size: .78rem;
    letter-spacing: .05em;
  }

  .qr-url-input input::placeholder { color: rgba(255,255,255,.35); }

  .qr-url-input button {
    background: var(--signal);
    border: none;
    padding: .7rem 1.2rem;
    color: white;
    font-family: 'Space Mono', monospace;
    font-size: .72rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background .2s;
  }

  .qr-url-input button:hover { background: #883cf0e0; }

  .qr-label {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: rgba(255,255,255,.4);
  }

  /* ───── TICKER ───── */
  .ticker {
    background: var(--signal);
    padding: .6rem 0;
    overflow: hidden;
    border-bottom: 1.5px solid #3a1c63;
  }

  .ticker-track {
    display: flex;
    gap: 0;
    white-space: nowrap;
    animation: ticker 22s linear infinite;
  }

  .ticker-item {
    font-family: 'Space Mono', monospace;
    font-size: .75rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: white;
    padding: 0 2.5rem;
  }

  .ticker-sep {
    color: rgba(255,255,255,.5);
  }

  @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

  /* ───── FEATURES ───── */
  #features {
    padding: 6rem 3rem;
    border-bottom: 1.5px solid #3a1c63;
  }

  .section-header {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: end;
    margin-bottom: 4rem;
  }

  .section-num {
    font-family: 'Space Mono', monospace;
    font-size: .7rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--signal);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    border-left: 1.5px solid var(--signal);
    padding-left: .6rem;
  }

  .section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1;
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 1.5px solid #3a1c63;
  }

  .feat-card {
    padding: 2.5rem 2rem;
    border-right: 1.5px solid #3a1c63;
    border-bottom: 1.5px solid #3a1c63;
    transition: background .2s;
    cursor: default;
    position: relative;
    overflow: hidden;
  }

  .feat-card:nth-child(3n) { border-right: none; }
  .feat-card:nth-last-child(-n+3) { border-bottom: none; }

  .feat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: #1f1232;
    transform: translateY(101%);
    transition: transform .35s cubic-bezier(.16,1,.3,1);
    z-index: 0;
  }

  .feat-card:hover::after { transform: translateY(0); }

  .feat-card:hover .feat-icon,
  .feat-card:hover .feat-title,
  .feat-card:hover .feat-desc {
    color: #fff;
    z-index: 1;
    position: relative;
  }

  .feat-icon {
    font-size: 2rem;
    margin-bottom: 1.2rem;
    display: block;
    position: relative;
    z-index: 1;
    transition: color .2s;
  }

  .feat-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: .7rem;
    position: relative;
    z-index: 1;
    transition: color .2s;
  }

  .feat-desc {
    font-size: .9rem;
    color: var(--mid);
    line-height: 1.6;
    position: relative;
    z-index: 1;
    transition: color .2s;
  }

  .feat-card:hover .feat-desc { color: rgba(245,240,232,.7); }

  /* ───── HOW IT WORKS ───── */
  #how {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1.5px solid #3a1c63;
    min-height: 600px;
  }

  .how-left {
    background: #180f26;
    padding: 5rem 3.5rem;
    color: var(--ink);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .how-left .section-title { color: var(--ink); }
  .how-left .section-num { color: var(--signal); border-color: var(--signal); }

  .steps {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .step {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid #3a1c63;
    cursor: pointer;
    transition: padding-left .25s;
  }

  .step:last-child { border-bottom: none; }
  .step:hover { padding-left: .5rem; }

  .step-num {
    font-family: 'Space Mono', monospace;
    font-size: .7rem;
    letter-spacing: .1em;
    color: var(--signal);
    flex-shrink: 0;
    margin-top: .1rem;
  }

  .step-content h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: .4rem;
    color: var(--ink);
  }

  .step-content p {
    font-size: .88rem;
    color: rgba(255, 255, 255, 0.891);
    line-height: 1.55;
  }

  .how-right {
    padding: 5rem 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #23133a;
    border-left: 1.5px solid #3a1c63;
  }

  /* ───── USE CASES ───── */
  #usecases {
    padding: 6rem 3rem;
    border-bottom: 1.5px solid #3a1c63;
  }

  .uc-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 3rem;
    border: 1.5px solid #3a1c63;
    overflow-x: auto;
  }

  .uc-tab {
    flex: 1;
    min-width: 120px;
    padding: .9rem 1.2rem;
    font-family: 'Space Mono', monospace;
    font-size: .72rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-align: center;
    cursor: pointer;
    border-right: 1.5px solid #3a1c63;
    transition: background .2s, color .2s;
    background: transparent;
    color: var(--mid);
    border-bottom: none;
    user-select: none;
  }

  .uc-tab:last-child { border-right: none; }
  .uc-tab.active { background: #23133a; color: var(--ink); }
  .uc-tab:hover:not(.active) { background: #1f1232; }

  .uc-panels { position: relative; min-height: 220px; }

  .uc-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .uc-panel.active { display: grid; }

  .uc-panel h3 {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: 1rem;
  }

  .uc-panel p {
    color: var(--mid);
    line-height: 1.65;
    font-size: .95rem;
    margin-bottom: 1.5rem;
  }

  .uc-tags {
    display: flex; flex-wrap: wrap; gap: .5rem;
  }

  .uc-tag {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .35rem .8rem;
    border: 1px solid #3a1c63;
    background: transparent;
    color: var(--ink);
  }

  .uc-visual {
    background: var(--ink);
    border: 1.5px solid #3a1c63;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
    overflow: hidden;
  }

  .uc-visual::before {
    content: '';
    position: absolute; inset: 0;
    background: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 10px,
      rgba(255,255,255,.03) 10px,
      rgba(255,255,255,.03) 20px
    );
  }

  /* ───── STATS ───── */
  #stats {
    background: var(--signal);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-bottom: 1.5px solid #3a1c63;
  }

  .stat-block {
    padding: 4rem 2.5rem;
    border-right: 1.5px solid #3a1c63;
    text-align: center;
  }

  .stat-block:last-child { border-right: none; }

  .stat-block .big {
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: 800;
    letter-spacing: -.04em;
    color: white;
    display: block;
  }

  .stat-block .small {
    font-family: 'Space Mono', monospace;
    font-size: .72rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: rgba(255,255,255,.7);
    margin-top: .5rem;
    display: block;
  }

  /* ───── FAQ ───── */
  #faq {
    display: grid;
    grid-template-columns: 1fr 2fr;
    border-bottom: 1.5px solid #3a1c63;
  }

  .faq-left {
    padding: 5rem 3rem;
    border-right: 1.5px solid #3a1c63;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .faq-left .section-title { margin-top: 1.5rem; }

  .faq-right {
    padding: 4rem 3.5rem;
  }

  .faq-item {
    border-bottom: 1.5px solid #3a1c63;
    overflow: hidden;
  }

  .faq-item:first-child { border-top: 1.5px solid #3a1c63; }

  .faq-q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.4rem 0;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    user-select: none;
    gap: 1rem;
  }

  .faq-icon {
    font-family: 'Space Mono', monospace;
    font-size: 1.2rem;
    color: var(--signal);
    flex-shrink: 0;
    transition: transform .3s;
    font-weight: 700;
  }

  .faq-item.open .faq-icon { transform: rotate(45deg); }

  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s cubic-bezier(.16,1,.3,1), padding .35s;
    font-size: .9rem;
    color: var(--mid);
    line-height: 1.65;
    padding: 0;
  }

  .faq-item.open .faq-a {
    max-height: 200px;
    padding-bottom: 1.4rem;
  }

  /* ───── CTA ───── */
  #cta {
    padding: 7rem 3rem;
    text-align: center;
    background: #191127;
    color: var(--ink);
    position: relative;
    overflow: hidden;
  }

  .cta-bg-text {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(6rem, 18vw, 20rem);
    font-weight: 800;
    letter-spacing: -.05em;
    color: rgba(255,255,255,.03);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
  }

  #cta h2 {
    font-size: clamp(2.5rem, 5vw, 5rem);
    font-weight: 800;
    letter-spacing: -.04em;
    line-height: 1;
    position: relative;
    z-index: 1;
    margin-bottom: 1.5rem;
  }

  #cta h2 span { color: var(--signal); }

  #cta p {
    color: rgba(255,255,255,.55);
    max-width: 500px;
    margin: 0 auto 2.5rem;
    font-size: 1.05rem;
    line-height: 1.65;
    position: relative;
    z-index: 1;
  }

  .cta-btns {
    display: flex;
    justify-content: center;
    gap: 1rem;
    position: relative;
    z-index: 1;
  }

  .cta-btns .btn-primary { background: var(--signal); border-color: var(--signal); }
  .cta-btns .btn-primary:hover { background: white; color: var(--paper) !important; border-color: #5e309d; }
  .cta-btns .btn-outline { border-color: #3a1c63; color: rgba(255,255,255,.8); }
  .cta-btns .btn-outline:hover { background: #883cf0e0; border-color: #5e309d; color: white; }

  /* ───── FOOTER ───── */
  footer {
    border-top: 1.5px solid #3a1c63;
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
  }

  .footer-copy {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .1em;
    color: var(--mid);
  }

  .footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }

  .footer-links a {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--mid);
    transition: color .2s;
  }

  .footer-links a:hover { color: var(--signal); }

  /* ───── QR GENERATOR WIDGET ───── */
  .qr-widget {
    width: 340px;
    background: white;
    border: 1.5px solid #3a1c63;
    box-shadow: 8px 8px 0 #3a1c6351;
    overflow: hidden;
  }

  .qr-widget-head {
    background: #2a1647;
    padding: .8rem 1rem;
    display: flex;
    align-items: center;
    gap: .5rem;
  }

  .dot-row { display: flex; gap: .4rem; }
  .dot-row span {
    width: 10px; height: 10px; border-radius: 50%;
    display: inline-block;
  }
  .dot-row .d1 { background: var(--signal); }
  .dot-row .d2 { background: #ffd000; }
  .dot-row .d3 { background: var(--pulse); }

  .qr-widget-title {
    font-family: 'Space Mono', monospace;
    font-size: .7rem;
    letter-spacing: .1em;
    color: rgba(255,255,255,.6);
    margin-left: .5rem;
  }

  .qr-widget-body {
    padding: 1.5rem;
  }

  .qr-widget-body label {
    font-family: 'Space Mono', monospace;
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--paper);
    display: block;
    margin-bottom: .5rem;
  }

  .qr-widget-body input {
    width: 100%;
    border: 1.5px solid #3a1c63;
    padding: .65rem .9rem;
    font-family: 'Space Mono', monospace;
    font-size: .78rem;
    outline: none;
    margin-bottom: 1rem;
    transition: border-color .2s;
    color: var(--paper);
    background: transparent;
  }

  .qr-widget-body input:focus { border-color: var(--signal); }

  .qr-preview {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
    min-height: 160px;
    align-items: center;
    background: #fafafa;
    border: 1px dashed #3a1c63;
  }

  .qr-preview canvas {
    image-rendering: pixelated;
  }

  .qr-generate-btn {
    width: 100%;
    background: #dcc8e9;
    color: var(--paper);
    border: none;
    padding: .8rem;
    font-family: 'Space Mono', monospace;
    font-size: .75rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background .2s;
  }

  .qr-generate-btn:hover { background: var(--signal); }

  /* ───── SCROLL ANIMATIONS ───── */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
  }

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

  .reveal-delay-1 { transition-delay: .1s; }
  .reveal-delay-2 { transition-delay: .2s; }
  .reveal-delay-3 { transition-delay: .3s; }
  .reveal-delay-4 { transition-delay: .4s; }

  /* ───── RESPONSIVE ───── */
  @media (max-width: 900px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    #hero { grid-template-columns: 1fr; }
    .hero-right { min-height: 420px; border-top: 1.5px solid #3a1c63; }
    .hero-left { padding: 4rem 1.5rem 3rem; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .feat-card:nth-child(2n) { border-right: none; }
    .feat-card:nth-child(3n) { border-right: 1.5px solid #3a1c63; }
    #how { grid-template-columns: 1fr; }
    .how-right { border-left: none; border-top: 1.5px solid #3a1c63; }
    .uc-panel { grid-template-columns: 1fr; }
    #stats { grid-template-columns: repeat(2, 1fr); }
    #faq { grid-template-columns: 1fr; }
    .faq-left { border-right: none; border-bottom: 1.5px solid #3a1c63; padding: 3rem 1.5rem; }
    .faq-right { padding: 3rem 1.5rem; }
    footer { flex-direction: column; text-align: center; }
    #features, #usecases { padding: 4rem 1.5rem; }
    #cta { padding: 5rem 1.5rem; }
  }