:root {
  --paper: #ebe4d6;
  --sheet: #f6f1e6;
  --ink: #1b1814;
  --muted: #5c564c;
  --line: #d4cbb8;
  --pine: #1a3330;
  --pine-2: #244742;
  --clay: #9c4328;
  --clay-d: #7c3420;
  --stamp: #8d2f2a;
  --focus: #1a3330;
  --shadow: 0 18px 40px rgba(27, 24, 20, 0.08);
  --nav-h: 4.25rem;
  --max: 72rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 1px 1px, rgba(27, 24, 20, 0.045) 1px, transparent 0) 0 0 / 14px 14px,
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--pine);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--clay);
}

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

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: var(--sheet);
  padding: 0.6rem 0.9rem;
}

.skip:focus {
  top: 0.75rem;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: var(--nav-h);
  background: rgba(246, 241, 230, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.nav {
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand span {
  font-size: 1.05rem;
}

.nav-toggle {
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  background: var(--sheet);
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
}

.nav-panel {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: var(--nav-h);
  background: var(--sheet);
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 1rem 1rem;
}

.nav-panel.is-open {
  display: block;
  box-shadow: 0 18px 28px rgba(27, 24, 20, 0.12);
}

.nav-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.nav-panel a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.98rem;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 0.95rem;
  background: var(--pine);
  color: #f3efe4;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--pine-2);
  color: #fff;
}

.hero {
  padding: 2.2rem 0 2.6rem;
}

.hero-grid {
  display: grid;
  gap: 1.4rem;
}

.kicker {
  margin: 0 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clay);
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h1 {
  margin: 0 0 0.9rem;
  font-size: clamp(2.1rem, 6vw, 4.2rem);
  max-width: 11ch;
}

.lede {
  margin: 0 0 1.15rem;
  max-width: 38rem;
  font-size: 1.08rem;
}

.lede p {
  margin: 0 0 0.75rem;
}

.short {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--pine);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  min-width: 15.5rem;
  padding: 0 1.2rem;
  background: var(--clay);
  color: #fffaf4;
  text-decoration: none;
  font-weight: 700;
}

.btn:hover {
  background: var(--clay-d);
  color: #fff;
}

.ledger {
  background: var(--sheet);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.1rem 1.2rem;
  position: relative;
}

.ledger::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0.55rem;
  background:
    radial-gradient(circle at 0 12px, transparent 6px, var(--sheet) 7px) 0 0 / 100% 22px,
    var(--clay);
}

.ledger-title {
  margin: 0 0 0.8rem;
  padding-left: 0.7rem;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.ledger ol {
  margin: 0;
  padding: 0 0 0 2rem;
}

.ledger li {
  margin: 0.45rem 0;
  padding-left: 0.2rem;
}

.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4.5rem;
  height: 4.5rem;
  margin-top: 1rem;
  border: 2px solid var(--stamp);
  color: var(--stamp);
  border-radius: 50%;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.04em;
  transform: rotate(-8deg);
}

.section {
  padding: 2.4rem 0;
  scroll-margin-top: calc(var(--nav-h) + 0.6rem);
}

.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: end;
  margin-bottom: 1rem;
  border-top: 1px solid var(--ink);
  padding-top: 0.8rem;
}

.index {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--clay);
}

h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.prose {
  max-width: 44rem;
}

.prose p {
  margin: 0 0 0.85rem;
}

.prose h3 {
  margin: 1.35rem 0 0.45rem;
  font-size: 1.35rem;
}

.steps {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.steps li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.7rem;
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.75rem 0.8rem;
  min-height: 4.5rem;
}

.num {
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--clay);
  line-height: 1;
}

.figure {
  margin: 1rem 0 1.2rem;
}

.figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 168;
  background: var(--sheet);
  border: 1px solid var(--line);
}

.figure figcaption {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.split {
  display: grid;
  gap: 0.8rem;
}

.note {
  margin: 0;
  padding: 0.9rem 1rem;
  background: var(--pine);
  color: #f4efe4;
  min-height: 6.5rem;
}

.note strong {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.legal {
  background: #e3d8c4;
  border-block: 1px solid var(--line);
}

.legal h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.help {
  font-family: var(--mono);
  font-size: 0.95rem;
}

.site-footer {
  background: var(--pine);
  color: #e7e0d2;
  padding: 2.2rem 0 1.4rem;
}

.site-footer a {
  color: #f3ecdf;
}

.foot-grid {
  display: grid;
  gap: 1.2rem;
}

.site-footer h2 {
  font-size: 1.25rem;
  margin: 0 0 0.4rem;
}

.site-footer p,
.site-footer li {
  color: #d9d0c1;
  font-size: 0.96rem;
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer li + li {
  margin-top: 0.35rem;
}

.updated {
  margin-top: 1.3rem;
  padding-top: 0.8rem;
  border-top: 1px solid rgba(243, 236, 223, 0.25);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }

  .nav-panel {
    display: block;
    position: static;
    background: transparent;
    border: 0;
    padding: 0;
    box-shadow: none;
  }

  .nav-panel ul {
    display: flex;
    align-items: center;
    gap: 1.1rem;
  }

  .nav-panel a {
    min-height: 0;
  }

  .hero-grid,
  .split,
  .foot-grid {
    grid-template-columns: 1.4fr 0.8fr;
    align-items: start;
  }

  .hero {
    padding: 3.2rem 0 3rem;
  }

  .section {
    padding: 3.2rem 0;
  }
}

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