:root {
  --ink: #161410;
  --ink-soft: #3f3a33;
  --muted: #6d655c;
  --paper: #f4efe6;
  --paper-2: #ebe4d6;
  --white: #fffcf7;
  --yellow: #f5c400;
  --yellow-deep: #e0b000;
  --forest: #1b2a24;
  --forest-2: #24362e;
  --line: rgba(22, 20, 16, 0.12);
  --shadow: 0 24px 60px rgba(22, 20, 16, 0.16);
  --serif: "Source Serif 4", "Iowan Old Style", Palatino, serif;
  --sans: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  --max: 1120px;
  --pad: clamp(1.25rem, 4vw, 2rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--yellow);
  color: var(--ink);
  padding: 0.6rem 1rem;
  z-index: 20;
}

.skip:focus {
  top: 1rem;
}

.wrap {
  width: min(var(--max), calc(100% - var(--pad) * 2));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid transparent;
}

.site-header:has(+ main) {
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  font-family: var(--serif);
  font-weight: 560;
  letter-spacing: -0.03em;
  text-decoration: none;
  font-size: 1.05rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--ink);
}

.nav-toggle {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 3rem;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--ink);
  color: var(--yellow);
}

.btn-primary:hover {
  background: #000;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  background: var(--white);
}

.hero {
  padding: clamp(2.5rem, 6vw, 5rem) 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
}

.kicker::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  background: var(--yellow);
  border-radius: 2px;
}

h1,
h2,
h3 {
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "clig" 0, "dlig" 0, "hlig" 0;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(3rem, 6.4vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
}

h1 span {
  display: block;
  font-style: italic;
  font-weight: 450;
}

.deck {
  max-width: 38rem;
  margin: 1.25rem 0 0;
  font-size: 1.2rem;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.meta-row strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 560;
  letter-spacing: -0.03em;
}

.meta-row span {
  color: var(--muted);
  font-size: 0.88rem;
}

.cover-stage {
  display: grid;
  place-items: center;
  min-height: 28rem;
}

.cover {
  width: min(100%, 360px);
  border-radius: 4px 12px 12px 4px;
  box-shadow: var(--shadow), 8px 0 0 #111 inset;
  background: var(--yellow);
}

.band {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.band-forest {
  background: var(--forest);
  color: #f6f1e6;
}

.band h2,
.section-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 520;
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.lede {
  max-width: 40rem;
  color: var(--ink-soft);
  font-size: 1.12rem;
}

.band-forest .lede {
  color: rgba(246, 241, 230, 0.78);
}

.section-head {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 2rem;
  max-width: 44rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card,
.person,
.path,
.spec {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.35rem 1.3rem 1.4rem;
}

.card h3,
.path h3,
.person h3 {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 540;
  letter-spacing: -0.03em;
}

.card p,
.path p,
.person p,
.spec p {
  margin: 0;
  color: var(--ink-soft);
}

.num {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 650;
}

.learn {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.learn ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.learn li {
  background: rgba(255, 252, 247, 0.06);
  border: 1px solid rgba(246, 241, 230, 0.12);
  border-radius: 0.9rem;
  padding: 1rem 1.05rem;
}

.who {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.who article {
  padding: 1.2rem;
  border-radius: 1rem;
  background: var(--paper-2);
}

.who h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.who p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.faq-list {
  display: grid;
  gap: 0.65rem;
  max-width: 46rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--white);
  padding: 0.85rem 1.1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 560;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--muted);
  font-weight: 650;
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list details p {
  margin: 0.75rem 0 0.15rem;
  color: var(--ink-soft);
}

.author {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.books-line {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.proofs {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.proofs li {
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.buy {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: center;
  background: var(--yellow);
  color: var(--ink);
  border-radius: 1.4rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);
}

.buy h2 {
  margin: 0 0 0.4rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.buy p {
  margin: 0 0 1.1rem;
  max-width: 36rem;
}

.formats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.btn-line {
  background: transparent;
  border-color: rgba(22, 20, 16, 0.35);
  color: var(--ink);
}

.btn-line:hover {
  background: rgba(22, 20, 16, 0.08);
}

.preorder-bar {
  position: fixed;
  z-index: 20;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem var(--pad) calc(0.7rem + env(safe-area-inset-bottom));
  background: var(--ink);
  color: #f6f1e6;
}

.preorder-bar[hidden] {
  display: none;
}

.preorder-bar p {
  margin: 0;
  font-weight: 600;
}

body.has-preorder-bar {
  padding-bottom: calc(4.5rem + env(safe-area-inset-bottom));
}

@media (min-width: 901px) {
  .preorder-bar {
    width: min(40rem, calc(100% - 2rem));
    margin-inline: auto;
    border-radius: 999px 999px 0 0;
    padding-inline: 1.4rem;
  }
}

.specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem 1.2rem;
  margin: 0;
}

.specs div {
  padding-top: 0.55rem;
  border-top: 1px solid rgba(22, 20, 16, 0.18);
}

.specs dt {
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.specs dd {
  margin: 0.15rem 0 0;
  font-weight: 600;
}

.site-footer {
  padding: 2rem 0 2.6rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 1.3rem;
}

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

.below {
  content-visibility: auto;
  contain-intrinsic-size: auto 520px;
}

@media (max-width: 900px) {
  .hero-grid,
  .learn,
  .author,
  .buy,
  .cards,
  .path-grid,
  .who {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: block;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 999px;
    min-height: 2.6rem;
    padding: 0 0.9rem;
    font: inherit;
  }

  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1rem var(--pad) 1.2rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .cover-stage {
    min-height: 0;
    order: -1;
  }

  .cover {
    width: min(70vw, 280px);
    margin-inline: auto;
  }
}

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