:root { --ink: #000; --muted: #5a5a5a; --line: #000; --dot: rgba(0, 0, 0, 0.055); }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    /* Hexagonal dot lattice: two square grids, the second offset by half a cell both
       ways, with the vertical period at sqrt(3) times the horizontal one. */
    background-color: #fff;
    background-image:
      radial-gradient(circle at center, var(--dot) 1.4px, transparent 1.5px),
      radial-gradient(circle at center, var(--dot) 1.4px, transparent 1.5px);
    background-size: 30px 51.96px;
    background-position: 0 0, 15px 25.98px;
    color: var(--ink);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    font-feature-settings: "cv11", "ss01";
    -webkit-font-smoothing: antialiased;
  }
  section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 72px 24px 110px;
    text-align: center;
  }
  .inner { width: 100%; max-width: 560px; }
  /* The demo is the widest thing on the page, so it gets its own column. */
  .inner.wide { max-width: 960px; width: 100%; }
  .price {
    font-size: 104px;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1;
    margin: 0 0 22px;
  }
  .logo { width: 132px; height: auto; display: block; margin: 0 auto 40px; }
  h1 { font-size: 30px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 14px; }
  p { font-size: 16px; line-height: 1.55; color: var(--muted); margin: 0 auto 40px; max-width: 420px; }
  .buy {
    display: inline-block;
    font: 500 15px Inter, sans-serif;
    color: var(--ink);
    text-decoration: none;
    background: #fdfdfd;
    border: 1.5px solid var(--line);
    border-radius: 10px;
    padding: 13px 30px;
    transition: background 120ms ease;
  }
  .buy:hover { background: #f1f1f1; }
  .buy:active { background: #e8e8e8; }
  /* Bottom edge, so the hero stays exactly centered and nothing sits above the mark. */
  /* Visible on the first screen as a hint that there is more below, then out of the
     way. The mark in the corner takes over once you are scrolling, so nothing fixed
     ever sits over the text. */
  .links {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 30px;
    display: flex;
    justify-content: center;
    gap: 34px;
    opacity: 1;
    pointer-events: auto;
    transition: opacity 180ms ease;
  }
  .links.off {
    opacity: 0;
    pointer-events: none;
  }
  .links a {
    font: 400 13px Inter, sans-serif;
    color: #8c8c8c;
    text-decoration: none;
    transition: color 120ms ease;
  }
  .links a:hover { color: var(--ink); }
  /* Way back up: the mark alone, and only once the hero is off screen. */
  .home {
    position: fixed;
    top: 26px;
    left: 30px;
    font-size: 21px;
    line-height: 1;
    color: #8c8c8c;
    text-decoration: none;
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, color 120ms ease;
  }
  .home.on { opacity: 1; pointer-events: auto; }
  .home:hover { color: var(--ink); }
  .frame {
    width: 100%;
    max-width: 960px;
    aspect-ratio: 16 / 9;
    border: 1.5px solid var(--line);
    border-radius: 12px;
    background: #fbfbfb;
    margin: 0 auto 26px;
    overflow: hidden;
  }
  .frame video { width: 100%; height: 100%; display: block; object-fit: cover; }
  .faq { text-align: left; width: 520px; max-width: 100%; margin: 0 auto; }
  .faq details { border-top: 1px solid rgba(0, 0, 0, 0.09); }
  .faq details:last-child { border-bottom: 1px solid rgba(0, 0, 0, 0.09); }
  .faq summary {
    list-style: none;
    cursor: pointer;
    padding: 17px 26px 17px 0;
    font-size: 15px;
    font-weight: 500;
    position: relative;
  }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after {
    content: "+";
    position: absolute;
    right: 2px;
    top: 15px;
    font-weight: 400;
    color: #9a9a9a;
  }
  .faq details[open] summary::after { content: "\2212"; }
  /* Anchored to the top, so opening an answer only ever adds height below it. */
  #faq { align-items: flex-start; padding-top: 132px; }
  .steps { counter-reset: step; }
  .steps li { list-style: none; margin: 0 0 24px; }
  .steps li::before {
    counter-increment: step;
    content: counter(step) ". ";
    font-weight: 600;
  }
  .steps { padding: 0; margin: 0 26px 18px 0; font-size: 14px; line-height: 1.6; }
  .shot {
    display: block;
    width: 100%;
    margin-top: 10px;
    border: 1px solid rgba(0, 0, 0, 0.18);
    border-radius: 8px;
    background: #fbfbfb;
    aspect-ratio: 16 / 10;
    object-fit: cover;
  }
  .faq p {
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 18px;
    max-width: none;
    text-align: left;
    padding-right: 26px; /* Same gutter as the summary, so nothing shifts on open. */
  }
  @media (max-width: 520px) {
    .links { gap: 22px; bottom: 22px; }
    .links a { font-size: 12px; }
    h1 { font-size: 25px; }
    .logo { width: 108px; margin-bottom: 32px; }
  }

  /* Text pages: read from the top, not centred in the viewport. */
  .doc { align-items: flex-start; padding-top: 110px; }
  .doc .inner { text-align: left; }
  .doc h1 { margin-bottom: 26px; }
  .doc h2 { font-size: 15px; font-weight: 600; margin: 30px 0 6px; }
  .doc p { margin: 0; max-width: none; font-size: 14px; }
  .doc p + p { margin-top: 10px; }
  body:not(:has(#faq)) .home { opacity: 1; pointer-events: auto; }

  .legal { margin: 34px auto 0; font-size: 12px; text-align: center; }
  .legal a { color: #9a9a9a; text-decoration: none; }
  .legal a:hover { color: var(--ink); }