:root {
  --ink: #10131a;
  --paper: #f5f2ec;
  --surface: #fffdf8;
  --night: #070b12;
  --night-soft: #101827;
  --accent: #c8440a;
  --accent-blue: #246da8;
  --muted: #696b70;
  --rule: #d8d3ca;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  font-weight: 300;
  line-height: 1.85;
  letter-spacing: 0;
}
a { color: inherit; }
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  padding: 0.7rem 1rem;
  background: #fff;
  color: #000;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  min-height: 68px;
  padding: 0 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  color: #eef3fb;
  background: var(--night);
  border-bottom: 1px solid #253044;
}
.nav-logo {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 1.12rem;
  text-decoration: none;
}
.nav-logo span { color: #ff7a32; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  font-family: "DM Mono", monospace;
  font-size: 0.72rem;
  color: #aab6c9;
}
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a:focus-visible { color: #fff; }

.article-hero {
  padding: 5.5rem 4rem 4rem;
  color: #eef3fb;
  background: var(--night);
  border-bottom: 1px solid #253044;
}
.hero-inner { max-width: 1040px; margin: 0 auto; }
.breadcrumb {
  margin-bottom: 2.2rem;
  font-family: "DM Mono", monospace;
  font-size: 0.68rem;
  color: #8da0bc;
}
.breadcrumb a { text-decoration: none; }
.eyebrow {
  margin: 0 0 1.1rem;
  font-family: "DM Mono", monospace;
  font-size: 0.7rem;
  color: #ff9a62;
}
h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  font-weight: 600;
  line-height: 1.2;
}
.hero-dek {
  max-width: 820px;
  margin: 1.7rem 0 0;
  color: #b8c3d3;
  font-size: 1.05rem;
  line-height: 1.95;
}
.article-meta {
  margin-top: 2rem;
  padding-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.8rem;
  border-top: 1px solid #253044;
  font-family: "DM Mono", monospace;
  font-size: 0.68rem;
  color: #8da0bc;
}

.reading-layout {
  max-width: 1040px;
  margin: 0 auto;
  padding: 4.5rem 4rem 7rem;
  display: grid;
  grid-template-columns: minmax(0, 760px) 190px;
  gap: 4.5rem;
  align-items: start;
}
.article-body { min-width: 0; }
.article-brief { margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--rule); }
.article-body .article-brief h2 { margin: 0 0 1rem; padding: 0; border: 0; font-size: 1.18rem; }
.article-body .source-links { margin: 0; font-size: 0.84rem; color: var(--muted); overflow-wrap: anywhere; }
.source-links a { color: #174f7a; text-underline-offset: 0.2em; }
.topic-links { padding-left: 1.2rem; }
.topic-links li { margin: 0.65rem 0; }
.article-body p {
  margin: 0 0 1.35rem;
  font-size: 1rem;
  line-height: 2.05;
}
.article-body h2 {
  margin: 4rem 0 1.35rem;
  padding-top: 1.25rem;
  border-top: 2px solid var(--ink);
  font-size: 1.58rem;
  font-weight: 600;
  line-height: 1.5;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 {
  margin: 2.5rem 0 1rem;
  font-size: 1.15rem;
  font-weight: 600;
}
.article-body .art-summary {
  margin-bottom: 2rem;
  padding: 1.35rem 1.5rem;
  border-left: 3px solid var(--accent-blue);
  background: #eceff2;
  color: #26364a;
}
.article-body .art-keywords {
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.86rem;
}
.article-body .art-numbered { padding-left: 1rem; border-left: 2px solid var(--rule); }
.article-body .art-list,
.article-body .art-sources { margin: 0 0 1.6rem; padding-left: 1.4rem; }
.article-body li { margin-bottom: 0.75rem; }
.article-body .art-sources { color: #4f545b; font-size: 0.88rem; }
.article-body .art-sources a { color: #174f7a; text-underline-offset: 0.2em; }
.art-table-wrap { margin: 1.8rem 0; overflow-x: auto; border: 1px solid var(--rule); }
.art-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.art-table th, .art-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.art-table th { background: #ece8df; font-weight: 600; }
.art-table tr:last-child td { border-bottom: 0; }
.article-author {
  margin-top: 4.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.82rem;
}

.article-aside {
  position: sticky;
  top: 2rem;
  padding-top: 0.8rem;
  border-top: 2px solid var(--ink);
}
.aside-label {
  margin: 0 0 0.8rem;
  font-family: "DM Mono", monospace;
  font-size: 0.65rem;
  color: var(--accent);
}
.article-aside a {
  display: block;
  padding: 0.75rem 0;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.55;
  text-decoration: none;
}
.article-aside a:hover, .article-aside a:focus-visible { color: var(--accent); }

.directory-shell, .service-shell { max-width: 1080px; margin: 0 auto; padding: 4.5rem 4rem 7rem; }
.directory-intro, .service-intro { max-width: 780px; margin-bottom: 4rem; }
.directory-intro h2, .service-intro h2 { margin: 0 0 1rem; font-size: 1.7rem; }
.directory-intro p, .service-intro p { margin: 0; color: var(--muted); }
.article-directory { border-top: 2px solid var(--ink); }
.directory-item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: start;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
}
.directory-date { font-family: "DM Mono", monospace; font-size: 0.68rem; color: var(--accent); }
.directory-copy h2 { margin: 0 0 0.55rem; font-size: 1.1rem; line-height: 1.55; }
.directory-copy p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.directory-arrow { color: var(--accent); }
.directory-item:hover h2, .directory-item:focus-visible h2 { color: var(--accent); }

.service-group { margin: 0 0 4.5rem; }
.service-group > h2 { margin: 0 0 1.8rem; font-size: 1.65rem; }
.service-list { border-top: 2px solid var(--ink); }
.service-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 3rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--rule);
}
.service-item h3 { margin: 0; font-size: 1.05rem; }
.service-item p { margin: 0; color: var(--muted); }
.faq-list { border-top: 2px solid var(--ink); }
.faq-item { padding: 1.5rem 0; border-bottom: 1px solid var(--rule); }
.faq-item h3 { margin: 0 0 0.65rem; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--muted); }
.contact-band {
  padding: 3rem;
  color: #eef3fb;
  background: var(--night-soft);
  border-left: 4px solid #ff7a32;
}
.contact-band h2 { margin: 0 0 0.8rem; font-size: 1.55rem; }
.contact-band p { margin: 0 0 1.5rem; color: #b8c3d3; }
.contact-band a {
  display: inline-block;
  padding: 0.8rem 1.2rem;
  color: #fff;
  background: #c8440a;
  text-decoration: none;
}

.site-footer {
  padding: 2rem 4rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: #8da0bc;
  background: var(--night);
  border-top: 1px solid #253044;
  font-family: "DM Mono", monospace;
  font-size: 0.66rem;
}
.site-footer a { text-decoration: none; }

@media (max-width: 820px) {
  .site-nav { padding: 0 1.25rem; }
  .nav-links { gap: 1rem; }
  .article-hero { padding: 4rem 1.25rem 3rem; }
  .reading-layout { padding: 3rem 1.25rem 5rem; grid-template-columns: 1fr; }
  .article-aside { position: static; }
  .directory-shell, .service-shell { padding: 3rem 1.25rem 5rem; }
  .directory-item { grid-template-columns: 1fr auto; gap: 0.8rem; }
  .directory-date { grid-column: 1 / -1; }
  .service-item { grid-template-columns: 1fr; gap: 0.75rem; }
  .contact-band { padding: 2rem 1.25rem; }
  .site-footer { padding: 1.5rem 1.25rem; flex-direction: column; }
}

@media print {
  .site-nav, .article-aside, .site-footer { display: none; }
  .article-hero { padding: 1rem 0; color: #000; background: #fff; }
  .reading-layout { display: block; padding: 1rem 0; }
  a { color: #000; }
}