/* 创始人署名文献 · 官方档案式排版 */
:root {
  --ia-navy: #1a2544;
  --ia-navy-soft: #2d3a5c;
  --ia-orange: #c96500;
  --ia-orange-light: #ff8900;
  --ia-gold: #b8860b;
  --ia-paper: #fdfcfa;
  --ia-paper-edge: #e8dfd0;
  --ia-ink: #2c2c2c;
  --ia-ink-muted: #5c5c5c;
  --ia-bg: #ebe6dc;
  --ia-max: 1180px;
}

.page-insight-archive {
  background: var(--ia-bg);
  background-image:
    linear-gradient(90deg, rgba(0, 0, 0, 0.015) 1px, transparent 1px),
    linear-gradient(rgba(0, 0, 0, 0.015) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-insight-archive .site-header-offset {
  display: block;
  height: 86px;
  width: 100%;
}

.ia-wrap {
  padding: 28px 0 72px;
}

.ia-inner {
  width: min(var(--ia-max), calc(100% - 40px));
  margin: 0 auto;
}

/* 面包屑 */
.ia-breadcrumb {
  margin-bottom: 20px;
}
.ia-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ia-ink-muted);
}
.ia-breadcrumb li + li::before {
  content: "›";
  margin: 0 10px;
  color: #999;
}
.ia-breadcrumb a {
  color: var(--ia-navy-soft);
  text-decoration: none;
  font-weight: 500;
}
.ia-breadcrumb a:hover { color: var(--ia-orange); }
.ia-breadcrumb .is-current {
  color: var(--ia-navy);
  font-weight: 700;
}

/* 双栏 */
.ia-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

/* 文献主体 */
.ia-document {
  background: var(--ia-paper);
  border: 1px solid var(--ia-paper-edge);
  box-shadow:
    0 1px 0 #fff inset,
    0 24px 48px rgba(26, 37, 68, 0.08),
    0 0 0 4px rgba(255, 255, 255, 0.5);
  position: relative;
}

.ia-document::before,
.ia-document::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  pointer-events: none;
  border-color: var(--ia-orange);
  border-style: solid;
  opacity: 0.45;
}
.ia-document::before {
  top: 12px; left: 12px;
  border-width: 2px 0 0 2px;
}
.ia-document::after {
  bottom: 12px; right: 12px;
  border-width: 0 2px 2px 0;
}

/* 机构顶栏 */
.ia-doc-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 40px;
  background: linear-gradient(135deg, var(--ia-navy) 0%, #243055 100%);
  border-bottom: 3px solid var(--ia-orange-light);
  color: #fff;
}
.ia-doc-org {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.ia-doc-org em {
  font-style: normal;
  color: rgba(255, 255, 255, 0.55);
  font-weight: 500;
  margin-left: 8px;
  letter-spacing: 0.06em;
}
.ia-doc-badge {
  flex-shrink: 0;
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  border: 1px solid rgba(255, 137, 0, 0.6);
  color: #ffd699;
  background: rgba(255, 137, 0, 0.12);
}

.ia-doc-header {
  padding: 36px 40px 28px;
  text-align: center;
  border-bottom: 1px solid var(--ia-paper-edge);
  background:
    linear-gradient(180deg, rgba(255, 244, 232, 0.35) 0%, transparent 100%);
}

.ia-doc-title {
  font-family: "Noto Serif SC", "STSong", serif;
  font-size: clamp(1.65rem, 3.5vw, 2.15rem);
  font-weight: 900;
  color: var(--ia-navy);
  line-height: 1.4;
  margin: 0 0 8px;
  letter-spacing: 0.06em;
}

.ia-doc-subtitle {
  font-family: "Noto Serif SC", serif;
  font-size: 15px;
  color: var(--ia-ink-muted);
  margin: 0 0 24px;
  font-weight: 600;
}

.ia-doc-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  border: 1px solid var(--ia-paper-edge);
  background: #fff;
  text-align: left;
}
.ia-doc-meta > div {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  border-right: 1px solid var(--ia-paper-edge);
  border-bottom: 1px solid var(--ia-paper-edge);
}
.ia-doc-meta > div:nth-child(3n) { border-right: none; }
.ia-doc-meta > div:nth-last-child(-n+3) { border-bottom: none; }
.ia-doc-meta dt {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ia-orange);
  margin: 0 0 4px;
}
.ia-doc-meta dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ia-navy);
  line-height: 1.45;
}

/* 提要 */
.ia-abstract {
  margin: 0;
  padding: 24px 40px;
  background: linear-gradient(90deg, #fff8f0 0%, #fff 100%);
  border-bottom: 1px solid var(--ia-paper-edge);
  border-left: 4px solid var(--ia-orange-light);
}
.ia-abstract-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--ia-orange);
  margin: 0 0 12px;
  text-transform: uppercase;
}
.ia-abstract-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, #f0dcc4, transparent);
}
.ia-abstract p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ia-ink);
  text-indent: 2em;
}

/* 目录 */
.ia-toc {
  padding: 22px 40px;
  border-bottom: 1px solid var(--ia-paper-edge);
  background: #faf8f5;
}
.ia-toc h2 {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--ia-navy);
  margin: 0 0 14px;
}
.ia-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}
.ia-toc a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--ia-navy-soft);
  text-decoration: none;
  line-height: 1.5;
}
.ia-toc a:hover { color: var(--ia-orange); }
.ia-toc-num {
  font-family: "Noto Serif SC", serif;
  font-weight: 900;
  color: var(--ia-orange);
  font-size: 13px;
  flex-shrink: 0;
}

/* 正文 */
.ia-body {
  padding: 32px 40px 40px;
  font-family: "Noto Serif SC", "STSong", serif;
  font-size: 17px;
  line-height: 2;
  color: var(--ia-ink);
}

.ia-section {
  margin-bottom: 36px;
}
.ia-section:last-child { margin-bottom: 0; }

.ia-section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--ia-navy);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ia-paper-edge);
  line-height: 1.45;
}
.ia-section-num {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(135deg, var(--ia-orange-light), var(--ia-orange));
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(201, 101, 0, 0.25);
}

.ia-body p {
  margin: 0 0 1.15em;
  text-indent: 2em;
  text-align: justify;
}
.ia-body p:last-child { margin-bottom: 0; }

.ia-body h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--ia-navy);
  margin: 1.6em 0 0.8em;
  text-indent: 0;
}

.ia-pullquote {
  margin: 24px 0;
  padding: 20px 24px 20px 28px;
  background: #faf8f5;
  border-left: 4px solid var(--ia-navy);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ia-navy-soft);
  text-indent: 0 !important;
  position: relative;
}
.ia-pullquote cite {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  font-style: normal;
  font-weight: 700;
  color: var(--ia-orange);
  text-align: right;
}

.ia-highlight-box {
  margin: 24px 0;
  padding: 20px 24px;
  background: linear-gradient(135deg, #fff8f0 0%, #fff 100%);
  border: 1px solid #f0dcc4;
  border-radius: 4px;
  text-indent: 0 !important;
}
.ia-highlight-box strong {
  color: var(--ia-navy);
}

.ia-body blockquote.ia-archive-note {
  margin: 28px 0 0;
  padding: 18px 22px;
  background: var(--ia-navy);
  color: rgba(255, 255, 255, 0.88);
  border: none;
  font-size: 15px;
  line-height: 1.85;
  text-indent: 0 !important;
}
.ia-body blockquote.ia-archive-note strong {
  color: #ffd699;
}

/* 文献页脚 */
.ia-doc-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 40px 32px;
  border-top: 2px double var(--ia-paper-edge);
  background: #faf8f5;
}
.ia-doc-copy {
  font-size: 12px;
  line-height: 1.75;
  color: var(--ia-ink-muted);
  max-width: 520px;
}
.ia-doc-copy strong {
  display: block;
  font-size: 13px;
  color: var(--ia-navy);
  margin-bottom: 4px;
}
.ia-doc-stamp {
  flex-shrink: 0;
  width: 96px;
  height: 96px;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: 0.08em;
  color: var(--ia-orange);
  border: 3px double var(--ia-orange);
  border-radius: 50%;
  transform: rotate(-8deg);
  opacity: 0.85;
  padding: 8px;
}

.ia-nav-back {
  margin-top: 24px;
}
.ia-nav-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ia-navy);
  text-decoration: none;
  background: var(--ia-paper);
  border: 1px solid var(--ia-paper-edge);
  transition: border-color 0.2s, color 0.2s;
}
.ia-nav-back a:hover {
  border-color: var(--ia-orange);
  color: var(--ia-orange);
}

/* 上下篇 */
.ia-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}
.ia-pager-item {
  padding: 16px 18px;
  background: var(--ia-paper);
  border: 1px solid var(--ia-paper-edge);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ia-pager-item:hover {
  border-color: var(--ia-orange);
  box-shadow: 0 4px 16px rgba(201, 101, 0, 0.08);
}
.ia-pager-label {
  display: block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--ia-orange);
  margin-bottom: 6px;
}
.ia-pager-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ia-navy);
  line-height: 1.5;
}
.ia-pager-item.is-next { text-align: right; }

/* 侧栏 */
.ia-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 96px;
}

.ia-side-card {
  background: var(--ia-paper);
  border: 1px solid var(--ia-paper-edge);
  box-shadow: 0 8px 24px rgba(26, 37, 68, 0.06);
}
.ia-side-head {
  padding: 12px 16px;
  background: var(--ia-navy);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.ia-side-body {
  padding: 16px;
}

.ia-author-card {
  text-align: center;
}
.ia-author-name {
  font-family: "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 900;
  color: var(--ia-navy);
  margin: 0 0 4px;
}
.ia-author-name a {
  color: inherit;
  text-decoration: none;
}
.ia-author-name a:hover { color: var(--ia-orange); }
.ia-author-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--ia-orange);
  margin: 0 0 12px;
  line-height: 1.5;
}
.ia-author-bio {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ia-ink-muted);
  margin: 0;
  text-align: left;
}

.ia-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.ia-index-list li {
  border-bottom: 1px dashed var(--ia-paper-edge);
}
.ia-index-list li:last-child { border-bottom: none; }
.ia-index-list a {
  display: flex;
  gap: 10px;
  padding: 12px 0;
  text-decoration: none;
  color: var(--ia-ink);
  font-size: 13px;
  line-height: 1.5;
  font-weight: 500;
}
.ia-index-list a:hover { color: var(--ia-orange); }
.ia-index-list .ia-index-num {
  flex-shrink: 0;
  font-family: "Noto Serif SC", serif;
  font-weight: 900;
  font-size: 12px;
  color: var(--ia-orange);
  width: 28px;
}
.ia-index-list .is-current {
  color: var(--ia-orange);
  font-weight: 700;
}

.ia-course-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.ia-course-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--ia-paper-edge);
  font-size: 13px;
}
.ia-course-list li:last-child { border-bottom: none; }
.ia-course-list a {
  color: var(--ia-navy);
  font-weight: 600;
  text-decoration: none;
}
.ia-course-list a:hover { color: var(--ia-orange); }

@media (max-width: 960px) {
  .ia-layout { grid-template-columns: 1fr; }
  .ia-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .ia-doc-meta { grid-template-columns: repeat(2, 1fr); }
  .ia-doc-meta > div:nth-child(3n) { border-right: 1px solid var(--ia-paper-edge); }
  .ia-doc-meta > div:nth-child(2n) { border-right: none; }
  .ia-toc ol { grid-template-columns: 1fr; }
  .ia-doc-band,
  .ia-doc-header,
  .ia-abstract,
  .ia-toc,
  .ia-body,
  .ia-doc-footer { padding-left: 24px; padding-right: 24px; }
}

@media (max-width: 640px) {
  .page-insight-archive .site-header-offset { height: 64px; }
  .ia-inner { width: calc(100% - 24px); }
  .ia-sidebar { grid-template-columns: 1fr; }
  .ia-doc-meta { grid-template-columns: 1fr; }
  .ia-doc-meta > div { border-right: none !important; }
  .ia-doc-footer { flex-direction: column; align-items: center; text-align: center; }
  .ia-pager { grid-template-columns: 1fr; }
  .ia-pager-item.is-next { text-align: left; }
  .ia-body { font-size: 16px; padding: 24px 20px 32px; }
}