:root {
  --ink: #030506;
  --salt: #f1e7d0;
  --amber: #f0a53a;
  --muted: rgba(241, 231, 208, 0.76);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--salt);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 2;
  transform: translateY(-160%);
  background: var(--amber);
  border: 2px solid #bd332b;
  color: var(--ink);
  font-weight: 800;
  padding: 0.65rem 0.9rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-nav {
  background: var(--ink);
  border-bottom: 1px solid rgba(241, 231, 208, 0.08);
  padding: 0.45rem 1.25rem;
}

.site-nav .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 2.5rem;
  justify-content: center;
  align-items: center;
}

.site-nav a {
  color: var(--salt);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--amber);
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  align-items: start;
  padding: 2rem 1.25rem 2.5rem;
  background: var(--ink);
  color: #fafafa;
}

#manifesto {
  padding-top: 1.25rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
}

.hero::before {
  z-index: -2;
  background: url("../img/thumbs.jpeg") center / cover;
  filter: grayscale(0.7) brightness(0.78) contrast(1.05);
}

.hero::after {
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(3, 5, 6, 0.7), rgba(3, 5, 6, 0.32) 55%, rgba(3, 5, 6, 0.5)),
    linear-gradient(90deg, rgba(3, 5, 6, 0.55), rgba(3, 5, 6, 0.2) 60%, rgba(3, 5, 6, 0));
}

.hero h1 {
  color: #ffffff;
}

.hero .hero__lede {
  color: rgba(255, 255, 255, 0.92);
}

.hero__content {
  width: min(900px, 100%);
  margin: 0 auto;
}

.kicker {
  margin: 0 0 0.9rem;
  color: var(--amber);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.kicker--brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
  padding: 0.4rem 0.85rem 0.35rem;
  border: 1px solid rgba(240, 165, 58, 0.6);
  border-radius: 999px;
  background: rgba(240, 165, 58, 0.14);
  color: #ffd58a;
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.kicker--brand .kicker__flag {
  font-size: 1.25rem;
  line-height: 1;
}

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

h1 {
  max-width: 12ch;
  margin-bottom: 1rem;
  font-size: 4.9rem;
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 1rem;
  font-size: 2.8rem;
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.hero__lede {
  max-width: 760px;
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 1.2rem;
}

.band {
  padding: 2.75rem 1.25rem;
}

.band--paper {
  background: #0b0f10;
}

.band--bone {
  background: #11100d;
}

.band--ink {
  background: var(--ink);
  color: var(--salt);
}

.band--author {
  background: #060a0d;
}

.band--ink .kicker {
  color: var(--amber);
}

.wrap {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.manifesto,
.split {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) minmax(0, 1.25fr);
  gap: 3rem;
  align-items: start;
}

.section-heading {
  max-width: 460px;
}

.manifesto__copy,
.split__copy {
  font-size: 1.08rem;
}

.manifesto__copy p:last-child,
.split__copy p:last-child {
  margin-bottom: 0;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.principle {
  min-height: 12rem;
  border: 1px solid rgba(241, 231, 208, 0.14);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(0, 127, 124, 0.18), rgba(241, 231, 208, 0.035));
  padding: 1.25rem;
}

.principle__title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
}

.principle__num {
  color: var(--amber);
  font-weight: 900;
}

.principle p {
  margin-bottom: 0;
  color: var(--muted);
}

.split__copy a {
  color: var(--amber);
  font-weight: 800;
  text-decoration-color: rgba(240, 165, 58, 0.44);
  text-underline-offset: 0.18em;
}

.bio-quote {
  margin: 1.4rem 0 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--amber);
  border-radius: 0 6px 6px 0;
  background: rgba(240, 165, 58, 0.06);
  color: var(--salt);
  font-size: 1.08rem;
  line-height: 1.5;
}

.bio-quote p {
  margin: 0 0 0.85rem;
}

.bio-quote p:last-child {
  margin-bottom: 0;
}

.caveats {
  display: grid;
  gap: 0.85rem;
}

.caveats .section-heading {
  margin-bottom: 1rem;
}

details {
  border: 1px solid rgba(241, 231, 208, 0.16);
  border-radius: 8px;
  background: rgba(241, 231, 208, 0.055);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
}

summary {
  cursor: pointer;
  position: relative;
  padding: 1rem 1.1rem 1rem 2.6rem;
  color: var(--salt);
  font-weight: 900;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "▸";
  position: absolute;
  left: 1.1rem;
  top: 0.95rem;
  color: var(--salt);
  font-size: 0.95em;
  line-height: 1.5;
  transition: transform 0.15s ease;
  transform-origin: 0.45em 0.6em;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details p {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  color: var(--muted);
}

details p + p {
  padding-top: 0.2rem;
}

.page-footer {
  padding: 2.25rem 1.25rem 2.75rem;
  background: #07090a;
  border-top: 1px solid rgba(241, 231, 208, 0.08);
  color: var(--muted);
  font-size: 0.95rem;
}

.page-footer .wrap {
  text-align: center;
}

.page-footer a {
  color: var(--amber);
  font-weight: 700;
  text-decoration-color: rgba(240, 165, 58, 0.5);
  text-underline-offset: 0.18em;
}

.page-footer p {
  margin: 0;
}

@media (max-width: 860px) {

  h1 {
    font-size: 3.35rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .band {
    padding: 1.5rem 1.25rem;
  }

  .manifesto,
  .split,
  .grid--three {
    grid-template-columns: 1fr;
  }

  .manifesto,
  .split {
    gap: 1.5rem;
  }

  .principle {
    min-height: auto;
  }

  .principle span {
    margin-bottom: 1.2rem;
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 1.5rem 1rem 2rem;
  }

  h1 {
    font-size: 2.65rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .hero__lede,
  .manifesto__copy,
  .split__copy {
    font-size: 1rem;
  }

  .band {
    padding: 1rem 1rem;
  }

  .manifesto,
  .split {
    gap: 1rem;
  }

  .site-nav {
    padding: 0.4rem 0.75rem;
  }

  .site-nav .wrap {
    gap: 0.3rem 1.5rem;
  }

  .site-nav a {
    font-size: 0.78rem;
  }
}