:root {
  --paper: #fbfaf7;
  --ink: #1b1b1a;
  --muted: #77736d;
  --rule: #e6e2da;
  --button: #1b1b1a;
  --button-text: #ffffff;
  --soft: #f1eee7;
  --reading-width: 690px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 18px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.site-header {
  border-bottom: 1px solid var(--rule);
}

.site-header__inner,
.site-footer__inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__inner {
  min-height: 68px;
}

.brand,
.header-link,
.site-footer,
.button {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.brand {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.header-link {
  font-size: 14px;
  color: var(--muted);
  transition: color 150ms ease;
}

.header-link:hover,
.footer-links a:hover {
  color: var(--ink);
}

.letter-shell {
  padding: 88px 20px 96px;
}

.letter {
  width: min(var(--reading-width), 100%);
  margin: 0 auto;
}

.letter p {
  margin: 0 0 1.55em;
}

.letter .lead {
  margin-top: 0.15em;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.letter strong {
  font-weight: 700;
}

.breakout {
  margin: 2.25em 0 !important;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  font-size: 24px;
  line-height: 1.55;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 2.5em 0 2.6em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 650;
  line-height: 1;
  border: 1px solid transparent;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    background 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: var(--button);
  color: var(--button-text);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
}

.button--primary:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.13);
}

.button--secondary {
  background: var(--soft);
  border-color: var(--rule);
}

.signature {
  margin-top: 2.6em !important;
}

.signature span {
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 13px;
}

.site-footer__inner {
  min-height: 78px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

@media (max-width: 640px) {
  body {
    font-size: 17px;
    line-height: 1.68;
  }

  .site-header__inner,
  .site-footer__inner {
    width: min(100% - 28px, 1120px);
  }

  .letter-shell {
    padding: 58px 18px 72px;
  }

  .letter .lead {
    font-size: 38px;
  }

  .breakout {
    font-size: 21px;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 20px 0;
  }
}