:root {
  color-scheme: light;
  --ink: #20211f;
  --muted: #666b64;
  --line: #dedbd2;
  --paper: #fbfaf6;
  --band: #f0eee6;
  --accent: #1f6f61;
  --warm: #b55e2a;
  --max: 1100px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: ui-serif, "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  line-height: 1.75;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 246, 0.94);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(12px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  font-weight: 700;
}
.brand strong, .brand small { display: block; line-height: 1.15; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 12px; font-family: ui-sans-serif, system-ui, sans-serif; }
nav { display: flex; gap: 18px; color: var(--muted); font-size: 14px; font-family: ui-sans-serif, system-ui, sans-serif; }
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(54px, 9vw, 96px) clamp(18px, 4vw, 48px) clamp(34px, 5vw, 64px);
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--warm);
  font: 700 13px/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0;
  text-transform: uppercase;
}
h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(44px, 7vw, 92px);
  line-height: 1.03;
  letter-spacing: 0;
}
.lede {
  max-width: 680px;
  margin: 22px 0 28px;
  color: var(--muted);
  font-size: clamp(18px, 2.1vw, 23px);
}
.hero-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  color: #fff;
  background: var(--accent);
  border-radius: 4px;
  text-decoration: none;
  font: 700 15px/1 ui-sans-serif, system-ui, sans-serif;
}
.article-list {
  border-top: 1px solid var(--line);
  background: var(--band);
}
.article-card {
  border-bottom: 1px solid var(--line);
}
.article-card a {
  max-width: var(--max);
  min-height: 180px;
  margin: 0 auto;
  padding: 28px clamp(18px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(110px, 160px) minmax(0, 1fr);
  column-gap: clamp(24px, 4vw, 56px);
  text-decoration: none;
}
.article-card time {
  color: var(--warm);
  font: 700 14px/1.3 ui-sans-serif, system-ui, sans-serif;
}
.article-card h2 {
  grid-column: 2;
  margin: 0 0 10px;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}
.article-card p {
  grid-column: 2;
  max-width: 760px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 17px;
}
.article-card span {
  grid-column: 2;
  color: var(--muted);
  font: 600 13px/1.2 ui-sans-serif, system-ui, sans-serif;
}
.article-card.is-sensitive { box-shadow: inset 4px 0 0 #9d2f2f; }
.article-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 34px clamp(18px, 4vw, 48px) 72px;
}
.article-hero {
  padding: 34px 0 42px;
  border-bottom: 1px solid var(--line);
}
.back {
  color: var(--muted);
  font: 700 14px/1.2 ui-sans-serif, system-ui, sans-serif;
  text-decoration: none;
}
.article-hero h1 {
  max-width: 900px;
  margin-top: 18px;
  font-size: clamp(38px, 6vw, 76px);
}
.summary {
  max-width: 760px;
  color: var(--muted);
  font-size: 20px;
}
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font: 700 14px/1.2 ui-sans-serif, system-ui, sans-serif;
}
.content {
  max-width: 760px;
  margin: 44px auto 0;
  font-size: 19px;
}
.content h2, .content h3, .content h4, .content h5 {
  margin: 2.2em 0 0.65em;
  line-height: 1.25;
  letter-spacing: 0;
}
.content h2 { font-size: 32px; }
.content h3 { font-size: 25px; }
.content p { margin: 1.1em 0; }
.content blockquote {
  margin: 2em 0;
  padding: 4px 0 4px 22px;
  border-left: 4px solid var(--accent);
  color: #4a4f49;
}
.content img {
  display: block;
  width: 100%;
  max-height: 760px;
  object-fit: contain;
  background: #ebe8df;
}
figure { margin: 2em 0; }
figcaption {
  margin-top: 8px;
  color: var(--muted);
  font: 13px/1.4 ui-sans-serif, system-ui, sans-serif;
}
.table-wrap { overflow-x: auto; margin: 2em 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; }
th, td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
code { padding: 0.12em 0.28em; background: #ece8dc; border-radius: 3px; font-size: 0.9em; }
.article-nav {
  max-width: 760px;
  margin: 56px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.article-nav a {
  min-height: 76px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
  text-decoration: none;
  font-weight: 700;
}
.article-nav span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.empty { max-width: 760px; margin: 0 auto; padding: 80px 24px; }
.site-footer {
  padding: 30px clamp(18px, 4vw, 48px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 14px/1.5 ui-sans-serif, system-ui, sans-serif;
}
@media (max-width: 720px) {
  .site-header { position: static; align-items: flex-start; }
  nav { padding-top: 9px; }
  h1 { font-size: 46px; }
  .article-card a { grid-template-columns: 1fr; min-height: 0; }
  .article-card h2, .article-card p, .article-card span { grid-column: 1; }
  .article-card time { margin-bottom: 12px; }
  .content { font-size: 17px; }
  .content h2 { font-size: 27px; }
  .article-nav { grid-template-columns: 1fr; }
}