/* Base: native document flow remains functional without scripting. */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--color-paper);
  scroll-padding-block-start: 2rem;
}

body {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: inherit;
}

::selection {
  background: var(--color-ink);
  color: var(--color-paper);
}

:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 6px;
}

.container {
  width: min(var(--content-width), calc(100% - var(--page-gutter) * 2));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  z-index: 1;
  inset-block-start: 1rem;
  inset-inline-start: var(--page-gutter);
  padding: 0.75rem 1rem;
  background: var(--color-ink);
  color: var(--color-paper);
  transform: translateY(calc(-100% - 2rem));
}

.skip-link:focus {
  transform: none;
}

/* Opening: the supplied wordmark and a typographic, centered reveal. */
.site-header {
  padding-block: 1.5rem 0;
}

.wordmark {
  display: block;
  width: 12rem;
  max-width: 100%;
  height: auto;
}

.hero {
  display: grid;
  place-items: center;
  min-height: 39rem;
  padding-block: 5rem 7rem;
  text-align: center;
}

.hero-content {
  width: 100%;
}

.eyebrow {
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  margin-block: 1.75rem 1.875rem;
  font-size: clamp(2.25rem, 7.2vw, 5.75rem);
  font-weight: 500;
  line-height: 1.055;
  letter-spacing: -0.065em;
}

h1 span {
  display: block;
}

.hero-description {
  max-width: 33rem;
  margin-inline: auto;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.75;
  text-wrap: pretty;
}

.vision-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  margin-block-start: 2.125rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration-color: var(--color-muted);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.4em;
}

.vision-link:hover {
  text-decoration-color: var(--color-ink);
  text-decoration-thickness: 2px;
}

/* Vision: open columns, with whitespace rather than boxes. */
.principles {
  border-block-start: 1px solid var(--color-rule);
  padding-block: 3rem 5.5rem;
}

.section-label {
  width: fit-content;
  margin-block-end: 2.75rem;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 4rem);
}

.principle h3 {
  margin-block-end: 0.875rem;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.035em;
}

.principle p {
  max-width: 34ch;
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
  text-wrap: pretty;
}

/* Status and endorsement: an honest close to the short story. */
.development {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  border-block-start: 1px solid var(--color-rule);
  padding-block: 2.75rem 3rem;
}

.development h2 {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.8;
}

.development-copy {
  max-width: 34rem;
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
  text-wrap: pretty;
}

.development-copy p + p {
  margin-block-start: 0.5rem;
}

.site-footer {
  border-block-start: 1px solid var(--color-rule);
  padding-block: 1.5rem 2rem;
  color: var(--color-muted);
  font-size: 0.75rem;
}

.site-footer span {
  color: var(--color-ink);
}

/* Reflow also supports desktop browser zoom without fixed-height content. */
@media (max-width: 44rem) {
  .site-header {
    padding-block-start: 1rem;
  }

  .wordmark {
    width: 10.5rem;
  }

  .hero {
    min-height: auto;
    padding-block: 4.75rem 5rem;
  }

  .hero .eyebrow {
    max-width: 27ch;
    margin-inline: auto;
    font-size: 0.6875rem;
  }

  h1 {
    margin-block: 1.5rem;
  }

  .vision-link {
    margin-block-start: 1.75rem;
  }

  .principles {
    padding-block: 2rem 3.5rem;
  }

  .section-label {
    margin-block-end: 2rem;
  }

  .principles-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .principle h3 {
    font-size: 1.375rem;
  }

  .principle p {
    max-width: 42ch;
  }

  .development {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-block: 2rem;
  }
}

/* Motion is opt-in; content never starts hidden and navigation stays native. */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  .hero-content {
    animation: settle-in 450ms ease-out;
  }

  @keyframes settle-in {
    from { transform: translateY(6px); }
    to { transform: translateY(0); }
  }
}