:root {
      --bg:      #080b0e;
      --surface: #0d1117;
      --panel:   #111820;
      --border:  #1c2a38;
      --border2: #243040;
      --text:    #b8ccd8;
      --bright:  #deeaf2;
      --dim:     #4a6070;
      --green:   #1affa0;
      --green2:  #0dc070;
      --amber:   #ffaa40;
      --blue:    #40aaff;
      --red:     #ff5060;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'Barlow', sans-serif;
      font-weight: 400;
      font-size: 15px;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    body::after {
      content: '';
      position: fixed; inset: 0;
      background: repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(0,0,0,0.025) 3px, rgba(0,0,0,0.025) 4px);
      pointer-events: none; z-index: 9000;
    }

    a { color: inherit; text-decoration: none; }
    ::-webkit-scrollbar { width: 4px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--border2); }

    /* ─── NAV ─── */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 500;
      background: rgba(8,11,14,0.92);
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(12px);
    }
    .nav-inner {
      max-width: 1280px; margin: 0 auto;
      padding: 0 2.5rem; height: 52px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .wordmark {
      font-family: 'Space Mono', monospace;
      font-size: 0.72rem; font-style: italic;
      color: var(--green); letter-spacing: 0.06em;
    }
    .nav-links { display: flex; gap: 2.5rem; align-items: center; }
    .nav-links a {
      font-family: 'Space Mono', monospace; font-size: 0.62rem;
      letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim);
      transition: color 0.15s;
    }
    .nav-links a:hover { color: var(--bright); }
    .nav-links a.gh {
      color: var(--green); border: 1px solid var(--green2);
      padding: 5px 14px;
    }
    .nav-links a.gh:hover { background: rgba(26,255,160,0.07); }

    /* ─── SHARED LAYOUT ─── */
    .wrap { max-width: 1280px; margin: 0 auto; padding: 0 2.5rem; }

    /* ─── BIG TITLE SYSTEM ─── */
    .page-title {
      font-family: 'Barlow Condensed', sans-serif;
      font-weight: 800;
      font-size: clamp(5rem, 12vw, 11rem);
      line-height: 0.88;
      letter-spacing: -0.03em;
      text-transform: uppercase;
      color: var(--bright);
    }
    .page-title .acc { color: var(--green); }

    .sec-title {
      font-family: 'Barlow Condensed', sans-serif;
      font-weight: 800;
      font-size: clamp(3.5rem, 8vw, 7rem);
      line-height: 0.88;
      letter-spacing: -0.03em;
      text-transform: uppercase;
      color: var(--bright);
      margin-bottom: 1.5rem;
    }

    .sec-tag {
      font-family: 'Space Mono', monospace; font-size: 0.62rem;
      letter-spacing: 0.18em; text-transform: uppercase; color: var(--green);
      display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.25rem;
    }
    .sec-tag::before { content: '//'; color: var(--dim); }

    .sec-intro {
      color: var(--dim); font-size: 0.9rem;
      max-width: 560px; line-height: 1.75; margin-bottom: 3rem;
    }

    /* ─── HERO ─── */
    .hero {
      min-height: 100vh;
      display: grid;
      grid-template-columns: 1fr 480px;
      align-items: center;
      padding: 7rem 2.5rem 4rem;
      max-width: 1280px; margin: 0 auto;
      gap: 5rem;
    }
    .hero-tag {
      font-family: 'Space Mono', monospace; font-size: 0.62rem;
      letter-spacing: 0.18em; text-transform: uppercase; color: var(--green);
      display: flex; align-items: center; gap: 0.75rem; margin-bottom: 2rem;
    }
    .hero-tag::before { content: ''; width: 28px; height: 1px; background: var(--green); }
    .hero-sub {
      font-size: 1rem; color: var(--dim); line-height: 1.8;
      max-width: 500px; margin: 2rem 0 2.75rem;
    }
    .hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
    .btn-p {
      font-family: 'Space Mono', monospace; font-size: 0.68rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      background: var(--green); color: #000;
      padding: 0.7rem 1.6rem; transition: background 0.15s;
      display: inline-flex; align-items: center; gap: 0.5rem;
    }
    .btn-p:hover { background: #fff; }
    .btn-s {
      font-family: 'Space Mono', monospace; font-size: 0.68rem;
      letter-spacing: 0.1em; text-transform: uppercase;
      border: 1px solid var(--border2); color: var(--dim);
      padding: 0.7rem 1.6rem; transition: border-color 0.15s, color 0.15s;
    }
    .btn-s:hover { border-color: var(--green); color: var(--green); }

    /* ─── OSC PANEL ─── */
    .osc-panel { background: var(--surface); border: 1px solid var(--border); }
    .osc-header {
      padding: 0.65rem 1.1rem;
      border-bottom: 1px solid var(--border);
      display: flex; justify-content: space-between; align-items: center;
    }
    .osc-lbl { font-family: 'Space Mono', monospace; font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--green); }
    .osc-status { display: flex; align-items: center; gap: 0.5rem; font-family: 'Space Mono', monospace; font-size: 0.6rem; color: var(--green); }
    .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); animation: blink 1.4s ease-in-out infinite; }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.25} }
    .osc-body { padding: 1rem; display: flex; flex-direction: column; gap: 0.75rem; }
    .osc-ch { display: grid; grid-template-columns: 2.5rem 1fr; align-items: center; gap: 0.75rem; }
    .ch-id { font-family: 'Space Mono', monospace; font-size: 0.6rem; }
    .osc-foot {
      border-top: 1px solid var(--border);
      display: grid; grid-template-columns: repeat(3,1fr);
      gap: 1px; background: var(--border);
    }
    .ofc { background: var(--panel); padding: 0.5rem 0.9rem; }
    .ofc-k { font-family: 'Space Mono', monospace; font-size: 0.55rem; color: var(--dim); margin-bottom: 2px; }
    .ofc-v { font-family: 'Space Mono', monospace; font-size: 0.65rem; color: var(--bright); }

    /* ─── STATS BAR ─── */
    .stats-bar {
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      background: var(--surface);
      display: grid; grid-template-columns: repeat(5,1fr);
    }
    .stat-cell {
      padding: 1.75rem 1.25rem; text-align: center;
      border-right: 1px solid var(--border);
      position: relative; cursor: default; transition: background 0.2s;
    }
    .stat-cell:last-child { border-right: none; }
    .stat-cell:hover { background: var(--panel); }
    .stat-cell::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
      background: var(--green); transform: scaleX(0); transition: transform 0.25s;
    }
    .stat-cell:hover::before { transform: scaleX(1); }
    .stat-val {
      font-family: 'Barlow Condensed', sans-serif; font-weight: 800;
      font-size: 2.6rem; line-height: 1; color: var(--bright); letter-spacing: -0.02em;
    }
    .stat-val sup { font-size: 1rem; color: var(--green); font-weight: 700; letter-spacing: 0; }
    .stat-key {
      font-family: 'Space Mono', monospace; font-size: 0.56rem;
      letter-spacing: 0.15em; text-transform: uppercase; color: var(--dim); margin-top: 5px;
    }

    /* ─── SECTION ─── */
    .section { padding: 6rem 0; border-bottom: 1px solid var(--border); }
    .section:last-child { border-bottom: none; }

    /* ─── BOARDS ─── */
    .boards {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 1px; background: var(--border); border: 1px solid var(--border);
    }
    .board { background: var(--surface); padding: 3rem; position: relative; overflow: hidden; }
    .board-num {
      position: absolute; bottom: -2rem; right: 1.5rem;
      font-family: 'Barlow Condensed', sans-serif; font-weight: 800;
      font-size: 10rem; line-height: 1; color: var(--border2);
      pointer-events: none; user-select: none; letter-spacing: -0.05em;
    }
    .board-tag {
      font-family: 'Space Mono', monospace; font-size: 0.6rem;
      letter-spacing: 0.18em; text-transform: uppercase; color: var(--dim);
      margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.5rem;
    }
    .board-tag::before { content: ''; width: 16px; height: 1px; background: var(--green2); }
    h3 {
      font-family: 'Barlow Condensed', sans-serif; font-weight: 700;
      font-size: 1.9rem; text-transform: uppercase; color: var(--bright);
      letter-spacing: 0.01em; margin-bottom: 1rem;
    }
    .board-body { color: var(--dim); font-size: 0.85rem; line-height: 1.75; margin-bottom: 1.5rem; }
    .specs-list { list-style: none; margin-bottom: 1.75rem; }
    .specs-list li {
      font-family: 'Space Mono', monospace; font-size: 0.7rem; color: var(--text);
      padding: 0.4rem 0; border-bottom: 1px solid var(--border);
      display: flex; gap: 0.75rem; align-items: baseline;
    }
    .specs-list li::before { content: '›'; color: var(--green2); flex-shrink: 0; }
    .specs-list li:last-child { border-bottom: none; }
    .tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
    .tag { font-family: 'Space Mono', monospace; font-size: 0.6rem; padding: 3px 9px; border: 1px solid var(--border2); color: var(--dim); }
    .tag.hi { border-color: var(--green2); color: var(--green); }

    /* ─── CABLE ─── */
    .cable-diagram {
      border: 1px solid var(--border);
      display: grid; grid-template-columns: 1fr auto 1fr;
      background: var(--border); gap: 1px;
    }
    .cable-node { background: var(--surface); padding: 2rem 2.25rem; }
    .cable-node-title {
      font-family: 'Space Mono', monospace; font-size: 0.6rem;
      letter-spacing: 0.15em; text-transform: uppercase; color: var(--green); margin-bottom: 1rem;
    }
    .cable-items { list-style: none; }
    .cable-items li {
      font-family: 'Space Mono', monospace; font-size: 0.68rem;
      color: var(--dim); padding: 0.3rem 0;
      display: flex; gap: 0.5rem;
    }
    .cable-items li::before { content: '›'; color: var(--dim); flex-shrink: 0; }
    .cable-pairs {
      background: var(--panel); padding: 2rem 2.25rem;
      display: flex; flex-direction: column; justify-content: center; gap: 2rem;
      min-width: 300px;
    }
    .pair { display: flex; align-items: center; gap: 1rem; }
    .pair-line { flex: 1; height: 1px; }
    .pair-name { font-family: 'Space Mono', monospace; font-size: 0.65rem; white-space: nowrap; }
    .pair-sub  { font-family: 'Space Mono', monospace; font-size: 0.57rem; color: var(--dim); margin-top: 2px; }

    /* ─── TEST LOG ─── */
    .test-table { border: 1px solid var(--border); }
    .test-row {
      display: grid; grid-template-columns: 4rem 2rem 1fr auto;
      align-items: start; gap: 1.75rem;
      padding: 1.5rem 1.75rem;
      border-bottom: 1px solid var(--border);
      transition: background 0.15s;
    }
    .test-row:last-child { border-bottom: none; }
    .test-row:hover { background: var(--panel); }
    .test-id { font-family: 'Space Mono', monospace; font-size: 0.62rem; color: var(--dim); padding-top: 2px; }
    .test-icon { font-size: 1rem; padding-top: 1px; }
    .test-title { font-family: 'Space Mono', monospace; font-size: 0.75rem; color: var(--bright); margin-bottom: 0.5rem; }
    .test-body  { font-size: 0.85rem; color: var(--dim); line-height: 1.65; }
    .badge { font-family: 'Space Mono', monospace; font-size: 0.6rem; padding: 3px 10px; white-space: nowrap; align-self: start; }
    .badge-fail { background: rgba(255,80,96,0.1); color: var(--red); border: 1px solid rgba(255,80,96,0.25); }
    .badge-ok   { background: rgba(26,255,160,0.08); color: var(--green); border: 1px solid var(--green2); }

    /* ─── PROTOCOL ─── */
    .proto-grid {
      display: grid; grid-template-columns: repeat(3,1fr);
      gap: 1px; background: var(--border); border: 1px solid var(--border);
    }
    .proto-cell { background: var(--surface); padding: 2rem 2.25rem; transition: background 0.15s; }
    .proto-cell:hover { background: var(--panel); }
    .proto-label { font-family: 'Space Mono', monospace; font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--dim); margin-bottom: 0.65rem; }
    .proto-val   { font-family: 'Space Mono', monospace; font-size: 1rem; color: var(--green); margin-bottom: 0.75rem; line-height: 1.3; }
    .proto-body  { font-size: 0.83rem; color: var(--dim); line-height: 1.65; }

    /* ─── PGA ─── */
    .pga-grid {
      display: grid; grid-template-columns: repeat(7,1fr);
      gap: 1px; background: var(--border); border: 1px solid var(--border);
    }
    .pga-cell { background: var(--surface); padding: 1.25rem 0.75rem; text-align: center; transition: background 0.15s; }
    .pga-cell:hover { background: var(--panel); }
    .pga-cell.hi { border: 1px solid var(--green2); background: rgba(26,255,160,0.04); }
    .pga-key  { font-family: 'Space Mono', monospace; font-size: 0.6rem; color: var(--dim); margin-bottom: 0.4rem; }
    .pga-val  { font-family: 'Space Mono', monospace; font-size: 0.85rem; color: var(--green); }
    .pga-note { font-family: 'Space Mono', monospace; font-size: 0.55rem; color: var(--green2); margin-top: 3px; }

    /* ─── REPOS ─── */
    .repo-list { border: 1px solid var(--border); }
    .repo-row {
      display: grid; grid-template-columns: 7rem 1fr 1.5rem;
      align-items: center; gap: 2.25rem;
      padding: 1.25rem 1.75rem;
      border-bottom: 1px solid var(--border);
      transition: background 0.15s;
      color: inherit;
    }
    .repo-row:last-child { border-bottom: none; }
    .repo-row:hover { background: var(--panel); }
    .repo-row:hover .repo-name { color: var(--green); }
    .repo-name { font-family: 'Space Mono', monospace; font-size: 0.72rem; color: var(--bright); transition: color 0.15s; }
    .repo-lang { font-family: 'Space Mono', monospace; font-size: 0.6rem; color: var(--dim); display: flex; align-items: center; gap: 5px; margin-top: 3px; }
    .repo-lang::before { content: ''; width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
    .lpy::before   { background: #3572A5; }
    .lcpp::before  { background: #f34b7d; }
    .lts::before   { background: #2b7489; }
    .lmeta::before { background: #555; }
    .repo-desc { font-size: 0.85rem; color: var(--dim); line-height: 1.65; }
    .repo-desc code { font-family: 'Space Mono', monospace; font-size: 0.75em; color: var(--text); }
    .repo-arrow { font-family: 'Space Mono', monospace; color: var(--dim); font-size: 0.75rem; }

    /* ─── BANNER ─── */
    .banner {
      border-top: 1px solid var(--border);
      position: relative; text-align: center;
      padding: 8rem 2.5rem; overflow: hidden;
    }
    .banner::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(26,255,160,0.04) 0%, transparent 70%);
      pointer-events: none;
    }
    .banner-sub { color: var(--dim); font-size: 0.9rem; max-width: 480px; margin: 1.25rem auto 2.5rem; line-height: 1.8; }

    /* ─── FOOTER ─── */
    footer {
      border-top: 1px solid var(--border);
      padding: 1.5rem 2.5rem;
      display: flex; justify-content: space-between; align-items: center;
      flex-wrap: wrap; gap: 1rem;
    }
    .ft-left { font-family: 'Space Mono', monospace; font-size: 0.62rem; color: var(--dim); font-style: italic; }
    .ft-right { display: flex; gap: 2rem; font-family: 'Space Mono', monospace; font-size: 0.62rem; color: var(--dim); }
    .ft-right a { transition: color 0.15s; }
    .ft-right a:hover { color: var(--green); }

    /* ─── REVEAL ─── */
    .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.55s ease, transform 0.55s ease; }
    .reveal.on { opacity: 1; transform: none; }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 960px) {
      .hero { grid-template-columns: 1fr; gap: 3rem; }
      .boards { grid-template-columns: 1fr; }
      .proto-grid { grid-template-columns: 1fr 1fr; }
      .pga-grid { grid-template-columns: repeat(4,1fr); }
      .stats-bar { grid-template-columns: repeat(3,1fr); }
      .cable-diagram { grid-template-columns: 1fr; }
      .cable-pairs { min-width: unset; }
      .nav-links a:not(.gh) { display: none; }
    }
    @media (max-width: 600px) {
      .proto-grid { grid-template-columns: 1fr; }
      .stats-bar { grid-template-columns: 1fr 1fr; }
      .pga-grid { grid-template-columns: repeat(3,1fr); }
      .test-row { grid-template-columns: 3rem 1fr auto; }
      .test-icon { display: none; }
      .repo-row { grid-template-columns: 1fr auto; }
    }