:root {
  color-scheme: light;
  --paper: #ffffb8;
  --ink: #050505;
  --measure: 42rem;
  --body-size: clamp(1.08rem, 0.98rem + 0.35vw, 1.32rem);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--paper);
  color: var(--ink);
  font-family: "Courier New", Courier, monospace;
  font-size: var(--body-size);
  line-height: 1.47;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.page {
  width: min(calc(100% - 2.5rem), var(--measure));
  margin-inline: auto;
  padding-block: clamp(2.2rem, 5.5vw, 4rem) clamp(3rem, 8vw, 6.5rem);
}

.marker {
  display: block;
  width: max-content;
  margin: 0;
  font-size: 1.55em;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.15em;
}

h1 {
  margin: clamp(2.25rem, 5vw, 3.6rem) 0 1.25rem;
  font-size: clamp(2.65rem, 6vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.065em;
}

p {
  margin: 0 0 1.35em;
}

.intro p {
  max-width: 40rem;
  line-height: 1.18;
}

.section-marker {
  margin-block: clamp(2.5rem, 6vw, 4.4rem) clamp(2.7rem, 6vw, 4.5rem);
}

.principles {
  display: grid;
  gap: 1.5em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles li {
  position: relative;
  padding-left: 1.15em;
}

.principles li::before {
  content: "■";
  position: absolute;
  left: 0;
  top: 0.08em;
  font-size: 0.68em;
}

.conclusion {
  margin: 0;
}

.author {
  margin-bottom: 0.8rem;
}

.location {
  margin: 0;
  font-size: 0.7em;
  line-height: 1.3;
}

.back-to-top {
  margin-top: clamp(2.8rem, 7vw, 4.8rem);
  color: inherit;
  text-decoration: none;
}

.back-to-top:focus-visible {
  outline: 0.15rem solid currentColor;
  outline-offset: 0.4rem;
}

@media (max-width: 36rem) {
  :root {
    --body-size: 1rem;
  }

  .page {
    width: min(calc(100% - 2rem), var(--measure));
  }

  h1 {
    font-size: 2.65rem;
  }

  .principles {
    gap: 1.35em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}