:root {
    /* Vercel-ish neutral scale */
    --bg: #000;
    --bg-1: #0a0a0a;
    --bg-2: #111111;
    --bg-3: #171717;
    --line: rgba(255,255,255,0.09);
    --line-2: rgba(255,255,255,0.16);
    --ink: #ededed;
    --ink-2: #a1a1a1;
    --ink-3: #707070;
    --ink-4: #444;

    --accent: #ff00ae;
    --good: #0070f3;     /* Vercel blue, used very sparingly */
    --good-2: #50e3c2;

    --maxw: 1200px;
    --pad: clamp(16px, 2vw, 28px);
    --r: 10px;
  }
  html[data-theme="light"] {
    --bg: #fff;
    --bg-1: #fafafa;
    --bg-2: #f4f4f4;
    --bg-3: #ededed;
    --line: rgba(0,0,0,0.09);
    --line-2: rgba(0,0,0,0.16);
    --ink: #0a0a0a;
    --ink-2: #525252;
    --ink-3: #888;
    --ink-4: #b3b3b3;
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: "Geist", system-ui, -apple-system, sans-serif;
    font-feature-settings: "ss01", "cv11";
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    letter-spacing: -0.011em;
  }
  ::selection { background: var(--accent); color: #fff; }

  .mono { font-family: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: 0; }

  a { color: inherit; text-decoration: none; }
  button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

  .container { max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
  .container--wide { max-width: 1320px; }

  /* Buttons — pill style, Vercel-ish */
  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    height: 40px;
    padding: 0 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--line-2);
    color: var(--ink);
    background: transparent;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
  }
  .btn:hover { background: var(--bg-2); border-color: var(--ink-3); }
  .btn--primary {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
  }
  .btn--primary:hover { background: var(--ink-2); border-color: var(--ink-2); color: var(--bg); }
  .btn--sm { height: 32px; padding: 0 14px; font-size: 13px; }
  .btn--ghost { border-color: transparent; }
  .btn--ghost:hover { background: var(--bg-2); border-color: var(--line); }
  .btn .arrow { transition: transform 0.18s ease; }
  .btn:hover .arrow { transform: translateX(2px); }

  /* Tag / chip */
  .chip {
    display: inline-flex; align-items: center; gap: 8px;
    height: 26px;
    padding: 0 10px 0 8px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--bg-1);
    font-size: 12px;
    color: var(--ink-2);
  }
  .chip .dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 22%, transparent);
  }
  .chip strong { color: var(--ink); font-weight: 500; }

  /* Section eyebrow */
  .eyebrow {
    font-size: 13px;
    color: var(--ink-3);
    letter-spacing: 0;
  }
  .eyebrow strong { color: var(--ink); font-weight: 500; }

  /* Big crisp display */
  .display {
    font-family: "Geist", system-ui, sans-serif;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.02;
  }

  /* Card */
  .card {
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: var(--r);
  }
  .card:hover { border-color: var(--line-2); }

  /* Inline kbd */
  .kbd {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 22px; height: 22px;
    padding: 0 6px;
    border: 1px solid var(--line);
    border-bottom-width: 2px;
    border-radius: 5px;
    background: var(--bg-2);
    font-family: "Geist Mono", monospace;
    font-size: 11px;
    color: var(--ink-2);
  }

  /* Hairline rule */
  hr.r {
    border: 0; height: 1px;
    background: var(--line);
    margin: 0;
  }

  /* gradient text */
  .grad {
    background: linear-gradient(180deg, var(--ink) 0%, color-mix(in oklab, var(--ink) 55%, transparent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  /* utility */
  .row { display: flex; align-items: center; }
  .col { display: flex; flex-direction: column; }
  .gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; } .gap-6 { gap: 24px; } .gap-8 { gap: 32px; }

  /* link with underline-on-hover */
  .ulink {
    color: var(--ink);
    border-bottom: 1px solid var(--line-2);
    transition: border-color 0.15s ease;
  }
  .ulink:hover { border-color: var(--ink); }

  /* keyframes */
  @keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
  }
  @keyframes spin {
    to { transform: rotate(360deg); }
  }
  @keyframes scan {
    0% { transform: translateY(-100%); opacity: 0; }
    20% { opacity: 1; }
    100% { transform: translateY(100%); opacity: 0; }
  }

  /* code-ish */
  .code {
    font-family: "Geist Mono", monospace;
    font-size: 13px;
    line-height: 1.6;
  }