:root {
  --bg: #f7f7f5;
  --paper: #ffffff;
  --ink: #111111;
  --muted: #687074;
  --line: #d9dddf;
  --accent: #0c5f56;
  --accent-2: #8b321f;
  --soft: #edf0f1;
  --font-sans: Inter, "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", SimSun, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-sans);
  line-height: 1.72;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
  padding: 0 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 247, 248, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.issue-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
}

.issue-link {
  flex: 0 0 auto;
  min-width: 48px;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
}

.issue-link.active {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(180px, 250px) minmax(0, 720px);
  gap: 64px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 52px 32px 96px;
}

.article-meta {
  position: sticky;
  top: 96px;
  align-self: start;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
}

.toc {
  display: grid;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.toc a {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
}

.toc a:hover { color: var(--accent); }

.article {
  min-width: 0;
  padding: 0;
}

.article-header {
  padding-bottom: 28px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 24px;
}

.issue-visual {
  margin: 0 0 34px;
}

.issue-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.issue-pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.issue-pager a {
  display: block;
  min-height: 96px;
  padding: 18px;
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  line-height: 1.35;
}

.issue-pager a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.issue-pager span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.32;
  letter-spacing: 0;
}

h3 {
  margin: 36px 0 14px;
  font-family: var(--font-serif);
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0;
}

p { margin: 0 0 16px; font-size: 17px; }

.section-label {
  margin: 24px 0 8px;
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 800;
}

.bullet-list {
  margin: 0 0 22px;
  padding-left: 20px;
}

.bullet-list li {
  margin: 0 0 10px;
  padding-left: 2px;
  font-size: 17px;
}

code {
  padding: 2px 5px;
  background: var(--soft);
  font-size: 0.92em;
}

.index-shell {
  max-width: 1020px;
  margin: 0 auto;
  padding: 58px 32px 96px;
}

.index-hero {
  max-width: 760px;
  margin-bottom: 34px;
  padding-bottom: 28px;
  border-bottom: 2px solid var(--ink);
}

.index-hero h1 {
  margin-bottom: 14px;
  max-width: 720px;
}

.latest-block {
  margin-bottom: 34px;
}

.latest-block .eyebrow {
  margin-bottom: 0;
}

.archive-heading {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

.archive-heading h2 {
  margin: 0;
  padding: 24px 0 0;
  border: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
}

.issue-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.issue-card {
  display: grid;
  grid-template-columns: 54px 92px minmax(0, 1fr) 52px;
  align-items: start;
  gap: 22px;
  min-height: 0;
  padding: 26px 0;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.issue-card:hover {
  color: var(--accent);
}

.issue-card.featured {
  grid-template-columns: 62px 128px minmax(0, 1fr) 52px;
  padding: 30px 0;
  border-bottom: 2px solid var(--ink);
}

.issue-card.featured .issue-number {
  font-size: 32px;
}

.issue-card.featured h2 {
  font-size: 34px;
}

.issue-thumb {
  display: block;
  width: 100%;
  border: 0;
  background: var(--paper);
  opacity: 0.9;
}

.issue-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.88);
}

.issue-number {
  color: var(--accent-2);
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.issue-copy {
  min-width: 0;
}

.issue-date {
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
}

.issue-card h2 {
  margin: 8px 0 14px;
  padding: 0;
  border: 0;
  font-size: 29px;
  line-height: 1.25;
}

.issue-card ul {
  margin: 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
}

.issue-card li {
  display: inline;
  margin: 0;
  padding: 0;
  border: 0;
}

.issue-card strong {
  display: inline;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
  font-weight: 700;
}

.issue-card li + li::before {
  content: " / ";
  color: var(--muted);
}

.issue-arrow {
  justify-self: end;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 860px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding: 12px 18px 8px;
  }

  .article-shell {
    display: block;
    padding: 28px 14px 64px;
  }

  .article-meta {
    position: static;
    margin-bottom: 18px;
  }

  .article-meta .toc {
    display: none;
  }

  .article {
    padding: 0;
  }

  h1 { font-size: 32px; }
  h2 { font-size: 21px; }
  h3 { font-size: 18px; }

  .index-shell {
    padding: 36px 16px 64px;
  }

  .issue-card {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
    padding: 22px 0;
  }

  .issue-thumb {
    display: none;
  }

  .issue-card.featured {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 24px 0;
  }

  .issue-card.featured .issue-number {
    font-size: 24px;
  }

  .issue-card.featured h2 {
    font-size: 25px;
  }

  .issue-arrow { display: none; }

  .issue-card h2 { font-size: 23px; }

  .issue-card li {
    display: block;
    margin-bottom: 6px;
  }

  .issue-card li + li::before { content: ""; }

  .issue-pager {
    grid-template-columns: 1fr;
  }

  .issue-visual {
    margin-bottom: 28px;
  }
}