:root {
    --paper: #F2F5F9; --paper-deep: #E6ECF3; --field: #FFFFFF;
    --ink: #13233A; --ink-soft: #42506A; --muted: #7C879A; --rule: #DAE1EA;
    --pine: #26553F; --pine-ink: #F3F7F5; --error: #8A2E1F;
    --serif: "Newsreader", Georgia, serif;
    --sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  }
  * { box-sizing: border-box; }
  body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
  a { color: inherit; }
  header { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 26px 28px 0; max-width: 68rem; margin: 0 auto; }
  .mark { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
  .mark img { width: 36px; height: 36px; }
  .mark span { font: 500 22px/1 var(--serif); }
  main { flex: 1; width: 100%; max-width: 27rem; margin: 0 auto; padding: 72px 24px 80px; }
  h1 { font: 400 clamp(36px, 7vw, 48px)/1.05 var(--serif); letter-spacing: -0.02em; margin: 0 0 14px; }
  h1 em { position: relative; font-style: italic; color: var(--pine); white-space: nowrap; }
  h1 em::after { content: ""; position: absolute; left: -4px; right: -8px; bottom: -6px; height: 12px; background: url("chalk.svg") no-repeat center / 100% 100%; opacity: .7; z-index: -1; }
  .sub { color: var(--ink-soft); margin: 0 0 36px; }
  label { display: block; font-size: 14px; color: var(--ink-soft); margin: 0 0 6px; }
  .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .field { margin-bottom: 18px; }
  input {
    width: 100%; font: 400 17px/1.3 var(--sans); color: var(--ink);
    background: var(--field); border: 1px solid var(--rule); border-radius: 12px; padding: 14px 14px;
    transition: border-color .15s ease, box-shadow .15s ease;
  }
  input:focus { outline: none; border-color: var(--pine); box-shadow: 0 0 0 3px rgba(47,74,59,.14); }
  .human { margin: 0 0 14px; }
  .human:empty { margin: 0; }
  button {
    width: 100%; display: inline-flex; justify-content: center; align-items: center; gap: 10px;
    background: var(--ink); color: #fff; border: 0; border-radius: 12px;
    font: 500 17px/1 var(--sans); padding: 18px 24px; cursor: pointer; transition: background .2s ease;
  }
  button:hover { background: #1E3554; }
  button[disabled] { opacity: .55; cursor: default; }
  .fine { font-size: 13px; line-height: 1.55; color: var(--muted); margin: 18px 0 0; }
  .fine a { text-decoration: none; border-bottom: 1px solid var(--rule); }
  .error { color: var(--error); font-size: 15px; margin: 0 0 14px; min-height: 1px; }
  .lock { margin: 28px 0 0; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 14px; line-height: 1.65; color: var(--ink-soft); }
  .lock a { color: var(--ink); white-space: nowrap; text-underline-offset: 3px; text-decoration-color: rgba(19,35,58,.3); }
  .done { display: none; }
  .is-done .form { display: none; }
  .is-done .done { display: block; }
  .bubble { display: inline-block; background: #2F6FE4; color: #fff; border-radius: 18px; border-bottom-right-radius: 6px; padding: 10px 14px; font-size: 16px; margin: 4px 0 26px; }
  .cta { display: flex; justify-content: center; align-items: center; gap: 10px; background: var(--ink); color: #fff; text-decoration: none; border-radius: 12px; font: 500 17px/1 var(--sans); padding: 18px 24px; }
  .cta:hover { background: #1E3554; }
  footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; width: 100%; max-width: 68rem; margin: 0 auto; padding: 22px 28px 28px;
           border-top: 1px solid var(--rule); font-size: 13px; color: var(--muted); }
  footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
  footer a { color: var(--muted); }
  .next { margin: 14px 0 0; font-size: 15px; color: var(--ink-soft); text-align: center; }
  .is-desktop .next { display: none; }
  .desk { display: none; margin-top: 18px; font-size: 15px; color: var(--ink-soft); }
  .is-desktop .desk { display: block; }
  @media (max-width: 480px) { header { padding-inline: 16px; } footer { padding-inline: 16px; } main { padding: 48px 16px 72px; } .row { grid-template-columns: 1fr; gap: 0; } }
  .nowrap { white-space: nowrap; }