:root {
  --bg: #000;
  --ink: #f4f4f4;
  --muted: #c6c6c6;
  --line: rgba(255, 255, 255, 0.16);
  --card: #070707;
  --yellow: #ffd203;
  --sans: "Segoe UI", system-ui, sans-serif;
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { color: var(--yellow); text-underline-offset: 0.16em; }
a:hover { color: #fff; }

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

.skip {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--yellow);
  color: #000;
  padding: 0.5rem 0.8rem;
  z-index: 2;
}
.skip:focus { top: 0.75rem; }

.wrap {
  width: min(72rem, calc(100% - 2.5rem));
  margin-inline: auto;
}

.prose { width: min(44rem, 100%); }

.site-header {
  background: #000;
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.75rem;
}

.brand { display: flex; line-height: 0; }
.brand img { height: 58px; width: auto; }

.site-header nav { display: flex; gap: 1.25rem; }
.site-header nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.98rem;
}
.site-header nav a[aria-current="page"] {
  color: var(--yellow);
  text-decoration: underline;
  text-underline-offset: 0.28em;
}

.hero { padding: 3.25rem 0 1rem; }

.hero-mark {
  width: min(28rem, 100%);
  height: auto;
  margin: 0 0 1.75rem;
}

h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0;
}

h1 { font-size: clamp(2.35rem, 5.4vw, 4.15rem); max-width: 16ch; }

h2 { font-size: clamp(1.6rem, 2.4vw, 2rem); }

h3 { font-size: 1.15rem; }

.lede, .detail {
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1.5;
}

.lede { margin: 1.15rem 0 0; color: var(--ink); }

.detail { margin: 0.85rem 0 0; }

.updated {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.block { padding: 3.25rem 0 0; }

.section-intro {
  max-width: 42rem;
  color: var(--muted);
  margin: 0.8rem 0 0;
}

.topics {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 0;
  padding: 0;
}

.topics li {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--yellow);
  padding: 1.15rem 1.15rem 1.3rem;
}

.topics h3 { font-size: 1.35rem; }

.topics p {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.steps {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  max-width: 46rem;
}

.steps li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.35rem 0.9rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.steps li:last-child { border-bottom: 1px solid var(--line); }

.num {
  color: var(--yellow);
  font-weight: 700;
  padding-top: 0.1rem;
}

.steps p {
  grid-column: 2;
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.faq { max-width: 46rem; margin-top: 0.4rem; }

.faq article {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.faq article:last-child { border-bottom: 1px solid var(--line); }

.faq p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.page-head { padding: 3.25rem 0 0.5rem; }

.listing { padding: 1.5rem 0 3rem; }

.posts {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 46rem;
}

.posts li {
  display: grid;
  gap: 0.2rem 1.5rem;
  grid-template-columns: 9.5rem 1fr;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.posts li:last-child { border-bottom: 1px solid var(--line); }

.posts time {
  color: var(--muted);
  font-size: 0.92rem;
  padding-top: 0.25rem;
}

.posts a {
  color: var(--ink);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  text-decoration: none;
}

.posts a:hover { color: var(--yellow); }

.posts p {
  grid-column: 2;
  margin: 0.15rem 0 0;
  color: var(--muted);
}

.empty { color: var(--muted); max-width: 42rem; }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.55rem;
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--yellow); }

.post { padding: 3.25rem 0 4rem; }
.post-head { margin-bottom: 1.75rem; }
.post-body {
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.65;
  max-width: 40rem;
}
.post-body p { margin: 0 0 1.1rem; }
.post-body h2 { margin: 2rem 0 0.6rem; font-size: 1.6rem; font-family: var(--sans); }
.post-body a { color: var(--yellow); }
.post-body ul, .post-body ol { padding-left: 1.2rem; }

.site-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--line);
}

.site-footer .wrap { padding: 1.5rem 0 2.25rem; }

.disclaimer, .footer-meta {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-meta { margin-top: 0.7rem; }

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

@media (max-width: 800px) {
  .topics { grid-template-columns: 1fr; }
  .brand img { height: 46px; }
  .hero { padding-top: 2.2rem; }
  .posts li { grid-template-columns: 1fr; }
  .posts p { grid-column: 1; }
  .posts time { padding-top: 0; }
}