*, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; }
  [hidden] { display: none !important; }
  :root {
    --bg: #0a0b0d;
    --ink: #e9ebef;
    --dim: #b4bac4;
    --sub: #d2d6dd;
    --faint: #3a3e46;
    --line: rgba(233, 235, 239, 0.12);
    --accent: #b9c8ff;
    color-scheme: dark;
  }
  html, body { background: var(--bg); }
  body {
    color: var(--ink);
    font: 200 15px/1.7 Montserrat, "Helvetica Neue", Arial, sans-serif;
    padding-inline: clamp(16px, 4vw, 48px);
    -webkit-font-smoothing: antialiased;
  }
  .wrap { max-width: 1180px; margin: 0 auto; }
  a:focus-visible, button:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }

  nav {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    padding-block: 26px;
  }
  .mark {
    font-weight: 300; font-size: 13px; letter-spacing: 0.24em;
    color: var(--ink); text-decoration: none; white-space: nowrap;
  }
  .mark span { color: var(--dim); }
  .tabs { display: flex; align-items: center; gap: clamp(16px, 3vw, 32px); }
  .tabs a {
    color: var(--dim); text-decoration: none;
    font-size: 11px; font-weight: 300; letter-spacing: 0.26em; text-transform: uppercase;
    padding: 7px 0; border-bottom: 1px solid transparent;
    transition: color .3s, border-color .3s;
  }
  .tabs a:hover { color: var(--ink); border-color: var(--line); }
  .tabs a.boxed { color: var(--ink); border: 1px solid var(--line); padding: 7px 14px; border-radius: 999px; }
  .tabs a.boxed:hover { border-color: var(--dim); }

  /* The hero fills the first screen; pricing starts below the fold */
  .hero { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; }
  .stage { flex: 1 1 auto; position: relative; min-height: 400px; display: grid; }
  #stage { position: absolute; inset: 0; display: block; width: 100%; height: 100%; transition: opacity .9s ease; }

  /* Scene 2: a static explanation of the service and its state updates */
  .scene {
    display: grid; align-content: center; justify-items: center; gap: 40px;
    padding-block: 24px; text-align: center;
    opacity: 0; transition: opacity .9s ease;
  }
  .scene.in { opacity: 1; }
  .cap { font-size: 10px; font-weight: 300; letter-spacing: 0.3em; text-transform: uppercase; color: var(--dim); }
  .explain { display: grid; gap: 18px; justify-items: center; max-width: 640px; }
  .explain p { margin: 0; color: var(--sub); font-size: clamp(17px, 1.8vw, 20px); line-height: 1.6; text-wrap: pretty; }
  .states {
    list-style: none; margin: clamp(24px, 6vh, 64px) 0 0; padding: 0; width: 100%; max-width: 760px;
    display: grid; grid-template-columns: repeat(4, 1fr); position: relative;
  }
  .states::before {
    content: ""; position: absolute; top: 4px; left: 12.5%; right: 12.5%;
    height: 1px; background: var(--line);
  }
  .states li { display: grid; justify-items: center; gap: 10px; position: relative; }
  .states i {
    width: 7px; height: 7px; border-radius: 50%;
    border: 1px solid var(--ink); background: var(--bg);
  }
  .states li.on i { background: var(--ink); }
  .states li.now i { border-color: var(--accent); box-shadow: 0 0 0 5px rgba(185, 200, 255, .1); }
  .states b { font-weight: 300; font-size: 12px; letter-spacing: 0.08em; }
  .states li.now b { color: var(--accent); }
  @media (max-width: 560px) {
    .states { grid-template-columns: 1fr 1fr; row-gap: 24px; }
    .states::before { display: none; }
  }
  .replay {
    font: inherit; font-size: 10px; font-weight: 300; letter-spacing: 0.26em; text-transform: uppercase;
    color: var(--dim); background: none; border: 0; padding: 6px 0; cursor: pointer;
    transition: color .3s;
  }
  .replay:hover { color: var(--ink); }

  .lede {
    display: grid; gap: 12px; justify-items: center; text-align: center;
    padding-block: clamp(24px, 6vh, 64px) 8px;
  }
  h1 {
    margin: 0; font-weight: 200; font-size: clamp(24px, 3.2vw, 38px);
    line-height: 1.25; letter-spacing: 0.01em; text-wrap: balance;
  }
  .lede p { margin: 0; color: var(--sub); }

  #pricing {
    border-top: 1px solid var(--line);
    padding-block: 72px 96px;
    display: grid; gap: 40px;
  }
  h2 {
    margin: 0; font-weight: 300; font-size: 11px;
    letter-spacing: 0.26em; text-transform: uppercase; color: var(--dim);
  }
  .tiers {
    list-style: none; margin: 0; padding: 0;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative;
  }
  .tiers::before {
    content: ""; position: absolute; top: 4px; left: 3px; right: 0;
    height: 1px; background: var(--line);
  }
  .tiers li { display: grid; gap: 10px; align-content: start; position: relative; }
  .tiers i {
    width: 7px; height: 7px; border-radius: 50%; margin-bottom: 14px;
    border: 1px solid var(--ink); background: var(--bg);
  }
  .tiers li.on i { background: var(--ink); }
  .tiers .name { font-weight: 300; font-size: 11px; letter-spacing: 0.26em; text-transform: uppercase; color: var(--dim); }
  .tiers .price { font-size: clamp(22px, 2.4vw, 28px); }
  .tiers p { margin: 0; color: var(--sub); font-size: 14px; }
  @media (max-width: 640px) {
    .tiers { grid-template-columns: 1fr; gap: 40px; }
    .tiers::before { display: none; }
  }
  @media (prefers-reduced-motion: reduce) {
    #stage, .scene { transition: none; }
  }

footer.site {
  display: flex; flex-wrap: wrap; gap: 8px 28px; border-top: 1px solid var(--line);
  padding-block: 28px 44px; font-size: 12px;
}
footer.site a { color: var(--dim); text-decoration: none; transition: color .3s; }
footer.site a:hover { color: var(--ink); }