:root {
    --ink:           #0f1116;
    --surface:       #171a20;
    --surface-2:     #1e222a;
    --line:          #2a2e37;
    --text:          #e8ebf2;
    --muted:         #878d9c;
    --faint:         #565c6b;
    --accent:        #4f8ff7;
    --accent-dim:    #2f5fb0;
    --accent-bright: #6ba5ff;
    --radius:        14px;
    --maxw:          1120px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--ink);
    color: var(--text);
    font-family: "Inter Tight", system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  ::selection { background: var(--accent); color: var(--ink); }

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

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

  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

  .mono {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--faint);
  }

  /* ---------- nav ---------- */
  nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(19,20,23,0.72);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  nav .wrap {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
  }
  .brand {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700; font-size: 17px; letter-spacing: 0.02em;
  }
  .brand span { color: var(--accent); }
  .navlinks { display: flex; gap: 30px; }
  .navlinks a {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--muted); transition: color 0.2s;
  }
  .navlinks a:hover { color: var(--text); }
  @media (max-width: 640px) { .navlinks { display: none; } }

  /* ---------- hero ---------- */
  header {
    position: relative;
    padding: 92px 0 76px;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
  }
  /* faint PCB-trace backdrop */
  header::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 46px 46px;
    opacity: 0.12;
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
            mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
  }
  .hero-inner { position: relative; z-index: 1; }

  /* self-drawing PCB trace centerpiece (js/hero-pcb.js draws into this) */
  .hero-pcb {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
    -webkit-mask-image: radial-gradient(ellipse 90% 80% at 72% 32%, #000 28%, transparent 80%);
            mask-image: radial-gradient(ellipse 90% 80% at 72% 32%, #000 28%, transparent 80%);
  }

  .eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    margin-bottom: 26px;
  }
  .eyebrow .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(79,143,247,0.16);
    animation: pulse 2.6s ease-in-out infinite;
  }
  @keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.35;} }

  h1 {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
    font-size: clamp(44px, 8vw, 92px);
    line-height: 0.98;
    letter-spacing: -0.02em;
    margin-bottom: 26px;
  }
  h1 .accent { color: var(--accent); }

  .lede {
    max-width: 620px;
    font-size: clamp(18px, 2.4vw, 22px);
    color: var(--muted);
    line-height: 1.5;
  }
  .lede strong { color: var(--text); font-weight: 600; }

  /* datasheet spec block — the signature element */
  .spec {
    margin-top: 46px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    max-width: 760px;
    animation: specGlow 7s ease-in-out infinite;
  }
  /* soft cobalt glow, breathing slowly around the datasheet block */
  @keyframes specGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(79,143,247,0); }
    50%      { box-shadow: 0 0 26px -8px rgba(79,143,247,0.22); }
  }
  .spec div {
    background: var(--surface);
    padding: 18px 20px;
  }
  .spec .k {
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--faint); margin-bottom: 7px;
  }
  .spec .v {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 600; font-size: 15px; color: var(--text);
  }
  @media (max-width: 720px) { .spec { grid-template-columns: repeat(2,1fr); } }

  .cta-row { margin-top: 40px; display: flex; gap: 14px; flex-wrap: wrap; }
  .btn {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: "JetBrains Mono", monospace;
    font-size: 13px; letter-spacing: 0.04em;
    padding: 13px 22px; border-radius: 10px;
    transition: transform 0.15s, background 0.2s, border-color 0.2s;
  }
  .btn-primary { background: var(--accent); color: var(--ink); font-weight: 500; }
  .btn-primary:hover { transform: translateY(-2px); background: var(--accent-bright); }
  .btn-ghost { border: 1px solid var(--line); color: var(--text); }
  .btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

  /* ---------- section scaffold ---------- */
  section { padding: 88px 0; border-bottom: 1px solid var(--line); }
  .sec-head {
    display: flex; align-items: baseline; gap: 16px;
    margin-bottom: 44px;
  }
  .sec-head .num {
    font-family: "JetBrains Mono", monospace;
    font-size: 13px; color: var(--accent); letter-spacing: 0.1em;
  }
  .sec-head h2 {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 600; font-size: clamp(26px, 4vw, 38px);
    letter-spacing: -0.01em;
  }
  .sec-head .rule { flex: 1; height: 1px; background: var(--line); align-self: center; }

  /* ---------- work grid ---------- */
  .grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }
  .card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.25s, border-color 0.25s;
    display: flex; flex-direction: column;
  }
  .card:hover { transform: translateY(-4px); border-color: var(--accent-dim); }
  .card.wide { grid-column: 1 / -1; }

  .card .media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--surface-2);
    overflow: hidden;
  }
  .card.wide .media { aspect-ratio: 21 / 9; }
  .card .media img { width: 100%; height: 100%; object-fit: cover; display: block; }

  /* placeholder styling */
  .ph {
    width: 100%; height: 100%;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 8px;
    background:
      repeating-linear-gradient(45deg, transparent 0 14px, rgba(255,255,255,0.015) 14px 28px),
      var(--surface-2);
    color: var(--faint);
    text-align: center; padding: 20px;
  }
  .ph .icon { font-size: 22px; opacity: 0.5; }
  .ph .lbl {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  }

  .tag {
    position: absolute; top: 14px; left: 14px;
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase;
    background: rgba(19,20,23,0.82);
    backdrop-filter: blur(6px);
    color: var(--accent);
    padding: 5px 10px; border-radius: 6px;
    border: 1px solid var(--line);
  }

  .card .body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
  .card .body h3 {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 600; font-size: 21px; margin-bottom: 8px;
  }
  .card .body p { color: var(--muted); font-size: 15.5px; line-height: 1.55; }
  .card .meta {
    margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap;
  }
  .card .meta span {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; color: var(--faint);
    border: 1px solid var(--line); border-radius: 5px;
    padding: 3px 9px;
  }
  @media (max-width: 720px) {
    .grid { grid-template-columns: 1fr; }
    .card.wide .media { aspect-ratio: 16/9; }
  }

  /* ---------- ventures ---------- */
  .ventures { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
  .venture { background: var(--surface); padding: 30px 30px 32px; transition: background 0.2s; }
  .venture:hover { background: var(--surface-2); }
  .venture .vt {
    display: flex; align-items: center; gap: 12px; margin-bottom: 12px;
  }
  .venture .vt h3 {
    font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 20px;
  }
  .venture .vt .badge {
    font-family: "JetBrains Mono", monospace; font-size: 10px;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--accent); border: 1px solid var(--accent-dim);
    border-radius: 20px; padding: 3px 10px;
  }
  .venture p { color: var(--muted); font-size: 15px; line-height: 1.55; }
  @media (max-width: 720px) { .ventures { grid-template-columns: 1fr; } }

  /* ---------- about ---------- */
  .about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: start; }
  .about-grid p { font-size: 18px; color: var(--muted); line-height: 1.7; margin-bottom: 20px; }
  .about-grid p strong { color: var(--text); font-weight: 600; }
  .facts { display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
  .fact { background: var(--surface); padding: 18px 22px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
  .fact .fk { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }
  .fact .fv { font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 15px; text-align: right; }
  @media (max-width: 720px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }

  /* ---------- contact / footer ---------- */
  footer { padding: 92px 0 60px; }
  .contact h2 {
    font-family: "Space Grotesk", sans-serif; font-weight: 700;
    font-size: clamp(32px, 6vw, 60px); letter-spacing: -0.02em; line-height: 1.05;
    margin-bottom: 30px;
  }
  .contact h2 a { color: var(--accent); text-decoration: none; border-bottom: 3px solid transparent; transition: border-color 0.2s; }
  .contact h2 a:hover { border-color: var(--accent); }
  .links { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
  .links a {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: "JetBrains Mono", monospace; font-size: 13px;
    padding: 12px 20px; border: 1px solid var(--line); border-radius: 10px;
    color: var(--muted); transition: all 0.2s;
  }
  .links a svg { width: 16px; height: 16px; flex: none; }
  .links a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
  .links a[aria-disabled] { color: var(--faint); cursor: default; }
  .links a[aria-disabled]:hover { border-color: var(--line); color: var(--faint); transform: none; }
  .foot-meta {
    margin-top: 70px; padding-top: 26px; border-top: 1px solid var(--line);
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
    font-family: "JetBrains Mono", monospace; font-size: 11.5px; color: var(--faint);
    letter-spacing: 0.05em;
  }

  /* ---------- scroll reveal ---------- */
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.in { opacity: 1; transform: none; }

  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
    .reveal { opacity: 1; transform: none; }
  }

/* ---------- additions for data-driven cards ---------- */
.card .body h3 a {
  color: inherit;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.card .body h3 a:hover { color: var(--accent); border-color: var(--accent); }
.card .body h3 a::after { content: " ↗"; font-size: 0.8em; color: var(--accent); }