:root {
  --paper: #f4efe6;
  --ink: #1c1b19;
  --muted: #666158;
  --line: rgba(28, 27, 25, 0.16);
  --orange: #a83e20;
  --teal: #1f7068;
  --code: #0e2d2a;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}
a {
  color: inherit;
}
.guide-shell {
  max-width: 1180px;
  margin: auto;
  padding: 0 28px 80px;
}
.guide-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.76rem;
  font-weight: 800;
}
.guide-nav a {
  text-underline-offset: 4px;
}
.guide-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: clamp(36px, 8vw, 110px);
  padding: clamp(64px, 10vw, 128px) 0;
  border-bottom: 1px solid var(--line);
}
.guide-kicker {
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}
h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
}
h1 {
  max-width: 780px;
  margin: 18px 0 24px;
  font-size: clamp(3rem, 7vw, 6.7rem);
  line-height: 0.94;
}
.guide-lead {
  max-width: 780px;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  line-height: 1.65;
}
.guide-meta {
  align-self: end;
  border-top: 3px solid var(--teal);
}
.guide-meta div {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.guide-meta strong,
.guide-meta span {
  display: block;
}
.guide-meta strong {
  color: var(--teal);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.guide-meta span {
  margin-top: 7px;
  font-size: 0.86rem;
  line-height: 1.5;
}
.guide-notice {
  margin: 34px 0 0;
  padding: 18px 22px;
  border-inline-start: 4px solid var(--orange);
  background: rgba(168, 62, 32, 0.07);
  line-height: 1.55;
}
.guide-section {
  padding: clamp(54px, 8vw, 96px) 0;
  border-bottom: 1px solid var(--line);
}
.guide-section-heading {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 22px;
  margin-bottom: 36px;
}
.guide-section-heading > span {
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}
h2 {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 4.6rem);
  line-height: 0.98;
}
.guide-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.guide-steps li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 20px;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}
.guide-steps strong {
  color: var(--teal);
  font-size: 0.72rem;
}
.guide-steps h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}
.guide-steps p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}
.file-list {
  display: grid;
  gap: 26px;
}
.file-card {
  min-width: 0;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.34);
}
.file-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}
.file-card h3 {
  margin: 0;
  font-size: 0.85rem;
}
.file-card a {
  padding: 8px 12px;
  border: 1px solid var(--teal);
  color: var(--teal);
  font-size: 0.7rem;
  font-weight: 850;
  text-decoration: none;
}
pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  background: var(--code);
  color: #fffdf8;
  font:
    0.76rem/1.58 "SFMono-Regular",
    Consolas,
    monospace;
}
.guide-checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.guide-checks div {
  padding: 22px;
  border-bottom: 1px solid var(--line);
}
.guide-checks div:nth-child(odd) {
  border-inline-end: 1px solid var(--line);
}
.guide-checks strong {
  display: block;
  margin-bottom: 8px;
  color: var(--teal);
}
.guide-checks p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}
.guide-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  padding-top: 28px;
  color: var(--muted);
  font-size: 0.76rem;
}
.guide-footer a {
  color: var(--teal);
  font-weight: 800;
}
@media (max-width: 760px) {
  .guide-shell {
    padding-inline: 20px;
  }
  .guide-hero,
  .guide-section-heading,
  .guide-checks {
    grid-template-columns: 1fr;
  }
  .guide-meta {
    align-self: auto;
  }
  .guide-checks div:nth-child(odd) {
    border-inline-end: 0;
  }
  .file-card header {
    align-items: flex-start;
    flex-direction: column;
  }
}