/* ══════════════════════════════════════
       TOKENS
       ══════════════════════════════════════ */
    :root {
      --bg:      #030509;
      --grid:    #0d121c;
      --surface: #08090f;
      --panel:   #0a0d15;
      --edge:    #181d2a;
      --edge2:   #232940;
      --ink:     #e6ecf5;
      --muted:   #58647a;
      --green:   #4ade80;
      --green-d: rgba(74,222,128,0.07);

      --font-px:   "Pixelify Sans", monospace;
      --font-body: "Inter", system-ui, sans-serif;
      --font-mono: ui-monospace, "SF Mono", monospace;

      --nav-h: 64px;
      --radius: 0px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; background: var(--bg); }

    body {
      color: var(--ink);
      font-family: var(--font-body);
      font-size: 15px;
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      /* v2 grid */
      background:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px),
        var(--bg);
      background-size: 32px 32px, 32px 32px, auto;
      background-attachment: fixed;
    }

    /* scanline overlay */
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 2;
      background: repeating-linear-gradient(
        180deg,
        rgb(255 255 255 / 0.015) 0,
        rgb(255 255 255 / 0.015) 1px,
        transparent 1px,
        transparent 5px
      );
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }

    /* ══════════════════════════════════════
       ANIMATIONS
       ══════════════════════════════════════ */
    @keyframes fade-up {
      from { opacity: 0; transform: translateY(14px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    @keyframes wave-drift {
      0%   { transform: translate3d(0, 0, 0); }
      33%  { transform: translate3d(-22px, 10px, 0); }
      66%  { transform: translate3d(-44px, 20px, 0); }
      100% { transform: translate3d(0, 0, 0); }
    }
    /* ── 2nd CSS animation: floating data pulses ── */
    @keyframes pulse-dot {
      0%, 100% { opacity: 0.2; transform: scale(1); }
      50%       { opacity: 0.8; transform: scale(1.4); }
    }
    @keyframes sweep-line {
      0%   { transform: translateX(-100%); opacity: 0; }
      10%  { opacity: 1; }
      90%  { opacity: 1; }
      100% { transform: translateX(100%); opacity: 0; }
    }

    .entrance { opacity: 0; }
    body.is-loaded .entrance {
      animation: fade-up 0.75s cubic-bezier(0.16,1,0.3,1) forwards;
      animation-delay: var(--delay, 0s);
    }
    .reveal {
      opacity: 0;
      transform: translateY(14px);
      transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1),
                  transform 0.7s cubic-bezier(0.16,1,0.3,1);
      transition-delay: var(--reveal-delay, 0s);
    }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }

    /* ══════════════════════════════════════
       SIGNAL FIELD  (background wave)
       ══════════════════════════════════════ */
    .signal-field {
      position: fixed;
      inset: 0;
      z-index: 0;
      overflow: hidden;
      pointer-events: none;
      opacity: 0;
      mix-blend-mode: screen;
      transition: opacity 2.5s ease-in;
    }
    body.is-loaded .signal-field { opacity: 1; }

    .signal-pixel-layer {
      position: absolute;
      left: 0; top: 0;
      width: 4px; height: 4px;
      animation: wave-drift 14s steps(10, end) infinite;
    }
    .signal-layer-b {
      opacity: 0.5;
      animation-duration: 20s;
      animation-direction: reverse;
    }

    /* ══════════════════════════════════════
       FIXED NAV
       ══════════════════════════════════════ */
    .site-nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      height: var(--nav-h);
      background: rgba(3,5,9,0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--edge);
    }

    .nav-inner {
      width: min(1080px, calc(100% - 48px));
      margin: 0 auto;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand img { width: 24px; height: 24px; opacity: 0.85; }
    .brand-name {
      font-family: var(--font-px);
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      color: var(--ink);
    }

    .nav-links {
      display: flex;
      gap: 24px;
      font-size: 0.85rem;
      color: var(--muted);
      list-style: none;
    }
    .nav-links a:hover { color: var(--ink); }
    .nav-links a { transition: color 0.2s; }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      height: 36px;
      padding: 0 16px;
      background: var(--ink);
      color: var(--bg);
      font-size: 0.82rem;
      font-weight: 600;
      border-radius: 0px;
      border: 1px solid var(--ink);
      transition: all 0.2s ease-in-out;
      flex-shrink: 0;
    }
    .nav-cta:hover {
      background: var(--green);
      border-color: var(--green);
      color: var(--bg);
    }

    /* Hamburger */
    .nav-burger {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 36px; height: 36px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 4px;
    }
    .nav-burger span {
      display: block;
      height: 1.5px;
      background: var(--ink);
      border-radius: 0px;
      transition: transform 0.25s, opacity 0.25s;
    }
    .nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
    .nav-burger.open span:nth-child(2) { opacity: 0; }
    .nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

    /* Mobile drawer */
    .nav-drawer {
      position: fixed;
      top: var(--nav-h);
      left: 0; right: 0;
      background: rgba(3,5,9,0.97);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--edge);
      padding: 0;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0.16,1,0.3,1), padding 0.35s;
      z-index: 99;
    }
    .nav-drawer.open {
      max-height: 400px;
      padding: 24px 0 32px;
    }
    .nav-drawer ul {
      list-style: none;
      width: min(1080px, calc(100% - 48px));
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .nav-drawer a {
      display: block;
      padding: 11px 0;
      font-size: 1rem;
      color: var(--muted);
      border-bottom: 1px solid var(--edge);
      transition: color 0.2s;
    }
    .nav-drawer a:hover { color: var(--ink); }
    .nav-drawer .drawer-cta {
      margin-top: 16px;
      display: inline-flex;
      align-items: center;
      height: 46px;
      padding: 0 20px;
      background: var(--ink);
      color: var(--bg);
      font-weight: 600;
      border-radius: 0px;
      border: 1px solid var(--ink);
      width: 100%;
      justify-content: center;
      transition: all 0.2s;
    }
    .nav-drawer .drawer-cta:hover {
      background: var(--green);
      border-color: var(--green);
      color: var(--bg);
    }

    @media (max-width: 700px) {
      .nav-links, .nav-cta { display: none; }
      .nav-burger { display: flex; }
    }

    /* ══════════════════════════════════════
       PAGE CONTENT
       ══════════════════════════════════════ */
    .container {
      position: relative;
      z-index: 10;
      width: min(1080px, calc(100% - 48px));
      margin: 0 auto;
      padding-top: var(--nav-h);
    }

    /* ── HERO ── */
    .hero {
      display: grid;
      grid-template-columns: 1fr;
      gap: 56px;
      padding: 80px 0 96px;
      align-items: center;
    }
    @media (min-width: 860px) {
      .hero { grid-template-columns: 1fr 1fr; gap: 80px; }
    }

    .hero-sub {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      text-transform: uppercase;
      letter-spacing: 0.14em;
      color: var(--green);
      margin-bottom: 14px;
    }
    .hero-title {
      font-family: var(--font-px);
      font-size: clamp(2.8rem, 6vw, 4.6rem);
      font-weight: 700;
      line-height: 1.04;
      letter-spacing: 0.04em;
      color: var(--ink);
      margin-bottom: 22px;
    }
    .hero-body {
      font-size: 1.05rem;
      color: var(--muted);
      max-width: 440px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 46px;
      padding: 0 22px;
      font-size: 0.88rem;
      font-weight: 600;
      border-radius: var(--radius);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      border: 1px solid var(--edge2);
      background: transparent;
      color: var(--ink);
      font-family: var(--font-body);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .btn:hover {
      border-color: var(--green);
      background: var(--green);
      color: var(--bg);
    }
    .btn.primary {
      background: var(--ink);
      color: var(--bg);
      border-color: var(--ink);
    }
    .btn.primary:hover {
      background: var(--green);
      border-color: var(--green);
      color: var(--bg);
    }

    /* ── SWR Data Panel ── */
    .data-panel {
      background: rgba(8,9,15,0.9);
      border: 1px solid var(--edge2);
      border-radius: 0px;
      padding: 24px;
      backdrop-filter: blur(8px);
      position: relative;
      overflow: hidden;
    }

    /* 2nd animation: sweep scan line over panel */
    .data-panel::after {
      content: "";
      position: absolute;
      top: 0; bottom: 0;
      width: 60px;
      background: linear-gradient(90deg, transparent, rgba(74,222,128,0.06), transparent);
      animation: sweep-line 4s ease-in-out infinite;
      pointer-events: none;
    }

    .panel-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 18px;
      font-family: var(--font-mono);
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--muted);
    }
    .panel-live {
      display: flex; align-items: center; gap: 6px;
      color: var(--green);
    }
    .panel-live::before {
      content: "";
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--green);
      animation: pulse-dot 2s ease-in-out infinite;
    }

    .graph-area {
      position: relative;
      height: 176px;
      border: 1px solid var(--edge);
      border-radius: 0px;
      overflow: hidden;
      margin-bottom: 16px;
      background: #020407;
    }
    .graph-area::before {
      content: "";
      position: absolute; inset: 0;
      background:
        linear-gradient(var(--edge) 1px, transparent 1px),
        linear-gradient(90deg, var(--edge) 1px, transparent 1px);
      background-size: 20px 20px;
      opacity: 0.35;
      z-index: 0;
    }
    .graph-layer {
      position: absolute; left: 0; top: 0;
      width: 4px; height: 4px;
      z-index: 1;
    }

    .panel-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .stat { display: flex; flex-direction: column; gap: 3px; }
    .stat-label {
      font-family: var(--font-mono);
      font-size: 0.66rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--muted);
    }
    .stat-val {
      font-family: var(--font-mono);
      font-size: 0.95rem;
      font-weight: 600;
    }
    .stat-val.ok { color: var(--green); }

    .hero-visual-stack {
      display: grid;
      gap: 14px;
    }
    .hero-data-panel {
      padding: 18px;
      box-shadow: 0 18px 70px rgb(0 0 0 / 0.32);
    }
    .hero-data-panel .graph-area {
      height: 138px;
      margin-bottom: 14px;
    }

    .product-hero-card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--edge2);
      background: rgba(8,9,15,0.9);
      box-shadow: 0 24px 80px rgb(0 0 0 / 0.38);
    }
    .product-hero-card::after {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(90deg, transparent, rgb(74 222 128 / 0.05), transparent),
        repeating-linear-gradient(180deg, rgb(255 255 255 / 0.018) 0, rgb(255 255 255 / 0.018) 1px, transparent 1px, transparent 5px);
    }
    .product-hero-card img {
      width: 100%;
      aspect-ratio: 637 / 391;
      object-fit: cover;
      background: #000;
    }

    /* ══════════════════════════════════════
       SECTIONS
       ══════════════════════════════════════ */
    .section {
      padding: 72px 0;
      border-top: 1px solid var(--edge);
    }

    .sec-eyebrow {
      font-family: var(--font-mono);
      font-size: 0.68rem;
      text-transform: uppercase;
      letter-spacing: 0.14em;
      color: var(--green);
      margin-bottom: 10px;
    }
    .sec-title {
      font-family: var(--font-px);
      font-size: 2rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      color: var(--ink);
      margin-bottom: 10px;
    }
    .sec-sub {
      color: var(--muted);
      font-size: 1rem;
      max-width: 560px;
      margin-bottom: 40px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 18px;
    }

    .card {
      padding: 24px;
      background: var(--panel);
      border: 1px solid var(--edge);
      border-radius: var(--radius);
      transition: border-color 0.2s, background 0.2s;
    }
    .card:hover { border-color: var(--edge2); background: rgba(255,255,255,0.025); }
    .card-icon {
      font-size: 1.1rem;
      margin-bottom: 14px;
      color: var(--green);
    }
    .card h3 {
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .card p { color: var(--muted); font-size: 0.88rem; }

    .concept-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 18px;
    }
    @media (min-width: 900px) {
      .concept-grid { grid-template-columns: 1fr 1fr; }
    }
    .concept-card {
      border: 1px solid var(--edge);
      background: var(--panel);
      overflow: hidden;
    }
    .concept-card img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      border-bottom: 1px solid var(--edge);
      background: #020407;
    }
    .concept-card div { padding: 22px; }
    .concept-card h3 {
      margin-bottom: 8px;
      font-size: 1rem;
      font-weight: 600;
    }
    .concept-card p:not(.sec-eyebrow) {
      color: var(--muted);
      font-size: 0.9rem;
    }

    /* Steps */
    .step-list { 
      display: grid; 
      grid-template-columns: 1fr; 
      gap: 0 40px; 
      max-width: 100%; 
    }
    @media (min-width: 768px) {
      .step-list {
        grid-template-columns: 1fr 1fr;
      }
    }
    .step-item {
      display: flex; gap: 24px;
      padding: 24px 0;
      border-bottom: 1px solid var(--edge);
    }
    .step-num {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      color: var(--muted);
      padding-top: 4px;
      flex-shrink: 0;
      width: 24px;
    }
    .step-content h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 5px; }
    .step-content p { color: var(--muted); font-size: 0.88rem; }

    /* Specs table */
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.88rem;
    }
    .spec-table td {
      padding: 12px 16px;
      border-bottom: 1px solid var(--edge);
    }
    .spec-table td:first-child {
      color: var(--muted);
      width: 180px;
      font-family: var(--font-mono);
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    .spec-table tr:last-child td { border-bottom: none; }

    /* Feedback box */
    .feedback-box {
      padding: 40px;
      background: var(--panel);
      border: 1px solid var(--edge2);
      border-radius: 0px;
      max-width: 100%;
    }
    .feedback-box h3 {
      font-family: var(--font-px);
      font-size: 1.6rem;
      letter-spacing: 0.04em;
      margin-bottom: 16px;
    }
    .feedback-box p { color: var(--muted); margin-bottom: 24px; font-size: 0.92rem; }
    .feedback-meta {
      margin-top: 14px;
      font-size: 0.72rem;
      color: var(--muted);
      font-family: var(--font-mono);
    }

    /* ══════════════════════════════════════
       FOOTER  (own dark bg, stands out)
       ══════════════════════════════════════ */
    .site-footer {
      position: relative;
      z-index: 10;
      margin-top: 80px;
      background: #020305;
      border-top: 1px solid var(--edge2);
    }

    .footer-inner {
      width: min(1080px, calc(100% - 48px));
      margin: 0 auto;
      padding: 56px 0 40px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 48px;
      align-items: start;
    }
    @media (max-width: 640px) {
      .footer-inner { grid-template-columns: 1fr; gap: 32px; }
    }

    .footer-brand .brand-name {
      font-family: var(--font-px);
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--ink);
      display: block;
      margin-bottom: 8px;
    }
    .footer-brand p {
      color: var(--muted);
      font-size: 0.85rem;
      max-width: 280px;
      line-height: 1.6;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.85rem;
      text-align: right;
      color: var(--muted);
    }
    @media (max-width: 640px) {
      .footer-links { text-align: left; }
    }
    .footer-links a { transition: color 0.2s; }
    .footer-links a:hover { color: var(--ink); }

    .footer-bottom {
      width: min(1080px, calc(100% - 48px));
      margin: 0 auto;
      padding: 20px 0;
      border-top: 1px solid var(--edge);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.74rem;
      color: var(--muted);
      font-family: var(--font-mono);
    }

    /* ══════════════════════════════════════
       RESPONSIVE TWEAKS
       ══════════════════════════════════════ */
    @media (max-width: 560px) {
      .hero { padding: 56px 0 68px; }
      .section { padding: 52px 0; }
      .panel-stats { grid-template-columns: 1fr 1fr; }
      .feedback-box { padding: 26px; }
      .spec-table td:first-child { width: 120px; }
    }

/* ══════════════════════════════════════
   STARTUP LOADER (RF METER)
   ══════════════════════════════════════ */
#startup-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--bg);
  background-size: 32px 32px, 32px 32px, auto;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), visibility 0.8s;
}
#startup-loader.hidden {
  opacity: 0;
  visibility: hidden;
}
.rf-stage {
  position: relative;
  /* Pixel size is 5px for a nice compact loader */
  width: calc(32 * 5px);
  height: calc(31 * 5px);
  filter: drop-shadow(0 0 25px rgba(74,222,128,0.1));
}
.pixel-layer {
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 5px;
}
.meter-base { background: transparent; }
.meter-frame { background: transparent; }

.meter-text {
  position: absolute;
  bottom: -15px;
  left: -20%;
  width: 140%;
  text-align: center;
  font-family: var(--font-px);
  color: #eafff8;
  font-size: 34px;
  letter-spacing: 0.15em;
  text-shadow: 0 0 15px rgba(74, 222, 128, 0.6);
  opacity: 0.9;
}

/* ══════════════════════════════════════
   HARDWARE SECTION (MOCKUP + LAYOUT)
   ══════════════════════════════════════ */
.technik-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 860px) {
  .technik-layout {
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
  }
}
.technik-left {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.technik-mockup-wrap {
  border: 1px solid var(--edge);
  background: var(--panel);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.technik-mockup-wrap::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 60px;
  background: linear-gradient(90deg, transparent, rgba(74,222,128,0.04), transparent);
  animation: sweep-line 6s ease-in-out infinite;
  pointer-events: none;
}
.technik-mockup-img {
  width: 100%;
  height: auto;
  display: block;
}