@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Figtree:wght@400;500;600;700&display=swap");

:root {
  --bg: #dfe7ee;
  --bg-accent: #c9d7e4;
  --surface: rgba(255, 252, 248, 0.92);
  --ink: #182433;
  --muted: #4d5d70;
  --accent: #0f6b6b;
  --accent-strong: #0a5050;
  --line: rgba(24, 36, 51, 0.14);
  --shadow: 0 18px 40px rgba(24, 36, 51, 0.08);
  --radius: 18px;
  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", serif;
  --font-body: "Figtree", "Segoe UI", sans-serif;
  --max: 52rem;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 107, 107, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(24, 36, 51, 0.12), transparent 28%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
  line-height: 1.65;
}

a {
  color: var(--accent-strong);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(15, 107, 107, 0.45);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  padding: 0.5rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.wrap {
  width: min(100% - 2rem, 68rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(223, 231, 238, 0.72);
  position: sticky;
  top: 0;
  z-index: 5;
}

.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.brand a {
  color: inherit;
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.home-intro,
.article-header {
  padding: 2.5rem 0 1rem;
}

.home-intro h1,
.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 40rem;
}

.article-summary {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.55;
  max-width: 42rem;
  margin: 0.85rem 0 0;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(15, 107, 107, 0.35);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(15, 107, 107, 0.08), transparent 42%),
    var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.article-quick-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.15rem;
  margin: 0.9rem 0 0;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
  line-height: 1.4;
}

.article-quick-nav a {
  color: var(--accent-strong);
  text-decoration: none;
  padding: 0.15rem 0.4rem;
  border-radius: 0.35rem;
}

.article-quick-nav a:hover,
.article-quick-nav a:focus-visible {
  background: rgba(15, 107, 107, 0.1);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.quick-nav-sep {
  color: var(--muted);
  padding: 0 0.1rem;
  user-select: none;
}

.reading-paths {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.55rem;
  margin: 0.85rem 0 0;
  font-size: 0.95rem;
}

.reading-paths a {
  color: var(--accent-strong);
}

.reading-paths-sep {
  color: var(--muted);
}

.tldr {
  border-color: rgba(15, 107, 107, 0.4);
}

.tldr-note {
  color: var(--muted);
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
}

.tldr-list {
  margin: 0;
  padding-left: 1.25rem;
}

.tldr-list li {
  margin: 0.55rem 0;
  line-height: 1.55;
}

.tldr-source {
  display: inline-block;
  margin-right: 0.35rem;
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.7);
}

.tldr-source-synthesis {
  border-color: rgba(15, 107, 107, 0.45);
  color: var(--accent-strong);
}

.tldr-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

.tldr-link:hover {
  color: var(--accent-strong);
}

.article-toc .toc-root,
.article-toc .toc-agents {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

.article-toc .toc-agents {
  margin-top: 0.35rem;
}

.article-toc li {
  margin: 0.28rem 0;
  line-height: 1.45;
}

.article-toc a {
  color: inherit;
}

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

.prose :is(h1, h2, h3, h4, h5, h6),
.article-page :is(h2, h3) {
  position: relative;
  scroll-margin-top: 1.25rem;
}

.heading-permalink {
  position: absolute;
  left: -0.95rem;
  top: 0.1em;
  opacity: 0;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85em;
}

:is(h1, h2, h3, h4, h5, h6):hover > .heading-permalink,
.heading-permalink:focus-visible,
.heading-permalink[data-copied="1"] {
  opacity: 1;
  color: var(--accent-strong);
}

.page-jump {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-jump-link {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.85rem;
}

.page-jump-link:hover {
  border-color: rgba(15, 107, 107, 0.45);
  color: var(--accent-strong);
}

@media (max-width: 720px) {
  .heading-permalink {
    position: static;
    opacity: 0.55;
    margin-right: 0.25rem;
  }

  .prose table,
  .summary-doc-body table {
    font-size: 0.88rem;
  }

  .prose th,
  .prose td,
  .summary-doc-body th,
  .summary-doc-body td {
    padding: 0.5rem 0.6rem;
  }
}

.count {
  color: var(--muted);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem;
  margin: 1rem 0 1.35rem;
}

.panel h2 {
  font-family: var(--font-display);
  margin-top: 0;
  font-size: 1.35rem;
}

.conclusion {
  border-color: rgba(15, 107, 107, 0.35);
  background:
    linear-gradient(180deg, rgba(15, 107, 107, 0.08), transparent 42%),
    var(--surface);
}

.conclusion h2 {
  color: var(--accent-strong);
  font-size: 1.6rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.9rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.pill {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0;
  margin: 1rem 0 0;
}

.tag-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  background: rgba(255, 255, 255, 0.65);
  font-size: 0.85rem;
}

.prompt-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.8rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-strong);
}

.copy-status {
  margin: 0;
  min-height: 1.2em;
  color: var(--muted);
  font-size: 0.95rem;
}

.prompt-block {
  margin: 0;
  padding: 1rem;
  overflow: auto;
  background: #15202b;
  color: #f4f7fa;
  border-radius: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.55);
}

.prompt-details summary {
  cursor: pointer;
  font-weight: 600;
}

.prompt-details[open] summary {
  margin-bottom: 0.75rem;
}

.prompt-details .prompt-block {
  margin-top: 0;
}

.agent-response + .agent-response {
  margin-top: 0.8rem;
}

.agent-response details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.55);
}

.agent-response summary {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.agent-name {
  font-weight: 700;
}

.agent-meta,
.note {
  color: var(--muted);
  font-size: 0.95rem;
}

.agent-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 0.5rem;
  margin: 0.9rem 0;
}

.agent-facts div {
  margin: 0;
}

.agent-facts dt {
  font-size: 0.8rem;
  color: var(--muted);
}

.agent-facts dd {
  margin: 0.1rem 0 0;
}

.prose :first-child {
  margin-top: 0;
}

.prose pre,
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.prose pre {
  overflow: auto;
  padding: 0.85rem 1rem;
  background: #15202b;
  color: #f4f7fa;
  border-radius: 10px;
}

/* Shared readable tables for article body and summary document */
.prose,
.summary-doc-body {
  overflow-x: auto;
}

.prose table,
.summary-doc-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.1rem 0;
  font-size: 0.95rem;
  line-height: 1.5;
  background: rgba(255, 255, 255, 0.55);
}

.prose th,
.prose td,
.summary-doc-body th,
.summary-doc-body td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.8rem;
  vertical-align: top;
}

.prose th,
.summary-doc-body th {
  background: rgba(15, 107, 107, 0.1);
  text-align: left;
  font-weight: 600;
}

.prose tr:nth-child(even) td,
.summary-doc-body tr:nth-child(even) td {
  background: rgba(15, 107, 107, 0.035);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.9rem;
}

.filter-grid label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.filter-grid input,
.filter-grid select {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.article-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.6);
  transition: transform 160ms ease, border-color 160ms ease;
}

.article-card:hover {
  transform: translateY(-2px);
  border-color: rgba(15, 107, 107, 0.45);
}

.article-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.article-card p {
  margin: 0.25rem 0;
  color: var(--muted);
}

.site-footer,
.article-footer {
  color: var(--muted);
  padding-bottom: 2rem;
}

@media (max-width: 640px) {
  .site-header .wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .prompt-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
}

.summary-doc-link {
  margin: 0 0 1rem;
}

.summary-doc-link a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(15, 107, 107, 0.35);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: rgba(15, 107, 107, 0.08);
}

.summary-doc-link a:hover {
  background: rgba(15, 107, 107, 0.14);
}

.summary-doc-page {
  background:
    radial-gradient(circle at top left, rgba(15, 107, 107, 0.14), transparent 36%),
    radial-gradient(circle at bottom right, rgba(24, 36, 51, 0.08), transparent 30%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
}

.summary-doc-header {
  margin-top: 1.5rem;
  border-color: rgba(15, 107, 107, 0.35);
}

.summary-doc-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 0.65rem;
}

.summary-doc-subtitle {
  color: var(--muted);
  margin: 0 0 1rem;
  max-width: 42rem;
}

.summary-source-links {
  margin: 0 0 1rem;
}

.summary-source-links-label {
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-source-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.summary-source-links a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.summary-doc-nav {
  margin: 0;
}

.summary-doc-layout {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
  gap: 1rem 1.25rem;
  align-items: start;
}

.summary-toc {
  position: sticky;
  top: 5.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem;
}

.summary-toc-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.summary-toc ol {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.45rem;
}

.summary-toc a {
  text-decoration: none;
  color: var(--ink);
  font-size: 0.95rem;
}

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

.summary-doc-body {
  min-width: 0;
}

.summary-doc-body > h1:first-child {
  display: none;
}

.summary-doc-body blockquote:first-of-type {
  margin: 0 0 1.25rem;
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: rgba(15, 107, 107, 0.08);
  font-size: 1.05rem;
}

.summary-doc-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.5rem 0;
}

.summary-doc-body h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-top: 2rem;
  padding-top: 0.35rem;
  scroll-margin-top: 5.5rem;
}

.summary-doc-body h2:first-child {
  margin-top: 0;
}

.summary-doc-footer {
  color: var(--muted);
}

@media (max-width: 900px) {
  .summary-doc-layout {
    grid-template-columns: 1fr;
  }

  .summary-toc {
    position: static;
  }
}

@media print {
  .summary-doc-layout {
    display: block;
  }

  .summary-toc {
    position: static;
    break-after: page;
  }

  .summary-doc-nav,
  .site-header nav {
    display: none !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  .site-header,
  .prompt-toolbar,
  #load-giscus,
  #giscus-container {
    display: none !important;
  }

  .panel {
    box-shadow: none;
    break-inside: avoid;
  }

  .agent-response details {
    open: true;
  }

  .agent-response details[open] summary,
  .agent-response details summary {
    display: block;
  }
}