:root {
  --ink: #1a2332;
  --ink-soft: #3a4658;
  --paper: #efe6d6;
  --paper-2: #f7f1e6;
  --line: #d9cdb8;
  --copper: #8f3414;
  --copper-deep: #6e250d;
  --pine: #0e4f46;
  --header: 64px;
  --measure: 68ch;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

img {
  max-width: 100%;
  min-width: 0;
  height: auto;
  display: block;
}

a {
  color: var(--pine);
}

a:hover {
  color: var(--copper-deep);
}

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--ink);
  color: var(--paper-2);
  padding: 8px 12px;
  z-index: 20;
}

.skip:focus {
  top: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--ink);
  color: var(--paper-2);
  height: var(--header);
}

.header-bar {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  contain: inline-size;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper-2);
  text-decoration: none;
  font-family: Palatino, "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand small {
  display: block;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c8b89a;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  margin-left: auto;
  min-width: 72px;
  min-height: 40px;
  border: 0;
  background: var(--copper);
  color: #fffaf4;
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 30;
}

.site-nav {
  display: none;
  position: absolute;
  top: var(--header);
  left: 0;
  right: 0;
  background: #121924;
  padding: 8px 20px 16px;
  flex-direction: column;
  gap: 4px;
}

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

.site-nav a {
  color: var(--paper-2);
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 1px solid rgba(232, 220, 196, 0.16);
}

.nav-out {
  color: #f0c7ae;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 20px 72px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.rail {
  display: none;
}

main {
  min-width: 0;
}

main section {
  scroll-margin-top: calc(var(--header) + 16px);
  padding: 28px 0 8px;
  border-top: 1px solid var(--line);
}

.hero {
  border-top: 0;
  padding-top: 12px;
}

.kicker,
.index,
.rail-meta,
.cta-note,
figcaption,
.age {
  color: var(--ink-soft);
}

.kicker {
  margin: 0 0 12px;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: Palatino, "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3.15rem);
  max-width: 16ch;
}

h2 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}

h3 {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

p {
  max-width: var(--measure);
  margin: 0 0 14px;
}

.lede {
  font-size: 1.12rem;
}

.short {
  font-family: Palatino, "Palatino Linotype", Georgia, serif;
  font-size: 1.35rem;
  margin-top: -4px;
}

.index {
  margin: 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 8px;
  min-width: 0;
}

.cta-block,
.cta-row {
  min-height: 96px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  background: var(--copper);
  color: #fffaf4;
  text-decoration: none;
  border-left: 4px solid var(--copper-deep);
  font-weight: 600;
}

.cta:hover {
  background: var(--copper-deep);
  color: #fffaf4;
}

.cta-note {
  margin-top: 10px;
  font-size: 0.92rem;
}

.mono {
  font-family: Consolas, "Cascadia Mono", "Courier New", monospace;
  font-size: 0.92em;
}

.panel {
  margin: 0;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  contain: inline-size;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 12px;
}

.panel img {
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 360;
  background: #f3ecdf;
}

figcaption {
  margin-top: 8px;
  font-size: 0.88rem;
}

.steps {
  list-style: none;
  margin: 8px 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.steps li {
  margin: 0;
  padding: 14px 14px 4px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 4px solid var(--pine);
}

.site-footer {
  background: var(--ink);
  color: #e7dcc8;
  padding: 36px 20px 48px;
}

.footer-grid {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: 22px;
}

.site-footer h2 {
  font-size: 1.35rem;
  color: #f7f1e6;
}

.site-footer a {
  color: #f0c7ae;
}

.site-footer p {
  color: #e7dcc8;
}

.footer-meta nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.footer-meta nav a {
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 199, 174, 0.45);
}

@media (min-width: 840px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 18px;
    background: transparent;
    padding: 0;
  }

  .site-nav a {
    padding: 0;
    border-bottom: 0;
    font-size: 0.95rem;
  }

  .shell {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
    padding-top: 36px;
  }

  .rail {
    display: block;
    position: sticky;
    top: calc(var(--header) + 20px);
  }

  .rail ol {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: rail;
  }

  .rail li {
    counter-increment: rail;
    border-top: 1px solid var(--line);
  }

  .rail a {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    color: var(--ink);
    text-decoration: none;
  }

  .rail a::before {
    content: counter(rail, decimal-leading-zero);
    color: var(--copper);
    font-variant-numeric: tabular-nums;
    font-size: 0.82rem;
    padding-top: 2px;
  }

  .rail-meta {
    font-size: 0.82rem;
    margin: 16px 0 0;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    align-items: start;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-meta {
    grid-column: 1 / -1;
  }
}

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