/* Insights section: shared page chrome (mirrors the resource pages) + index list + article prose. */


html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--fg); font-family: var(--mono); overflow-x: hidden; cursor: none; }

.cursor {
  width: 8px; height: 8px; border-radius: 50%; position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9999; transform: translate(-50%,-50%);
  transition: width .2s, height .2s, background .2s, border .2s;
}
[data-theme="dark"]  .cursor { background: var(--fg); }
[data-theme="light"] .cursor { background: var(--accent1); }
.cursor.expand { width: 40px; height: 40px; background: transparent !important; border: 1px solid var(--fg); }

.page-wrap { max-width: 1060px; margin: 0 auto; padding: 140px 48px 120px; position: relative; }
.page-eyebrow {
  font-family: var(--mono); font-size: 10px; letter-spacing: 4px;
  color: var(--fg-mid); text-transform: uppercase;
  display: flex; align-items: center; gap: 12px; margin-bottom: 24px;
}
.page-eyebrow::before { content: ''; display: block; width: 24px; height: 1px; background: linear-gradient(90deg, var(--accent1), var(--accent2)); }
h1 {
  font-family: var(--serif); font-size: clamp(36px, 5vw, 60px);
  font-weight: 900; letter-spacing: -2px; line-height: 1.08; color: var(--fg); margin-bottom: 22px; max-width: 800px;
}
h1 .grad { background: linear-gradient(90deg, var(--accent1), var(--accent2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lede { font-family: var(--mono); font-size: 14px; line-height: 1.9; color: var(--fg-mid); max-width: 640px; margin-bottom: 20px; }
.lede strong { color: var(--fg); font-weight: 500; }

.cta-row { display: flex; align-items: center; gap: 24px; margin: 36px 0 0; flex-wrap: wrap; }
.cta-btn {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  background: linear-gradient(135deg, var(--accent1), var(--accent2)); color: #0A0A0A; font-weight: 500;
  padding: 15px 28px; border-radius: 2px; text-decoration: none; transition: opacity .2s, transform .2s; display: inline-block;
}
.cta-btn:hover { opacity: 0.88; transform: translateY(-1px); }
.cta-ghost {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--fg-mid); border: 1px solid var(--border); padding: 14px 24px; border-radius: 2px;
  text-decoration: none; transition: color .2s, border-color .2s; display: inline-block;
}
.cta-ghost:hover { color: var(--accent1); border-color: var(--accent1); }

.sec-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 4px; color: var(--accent1);
  text-transform: uppercase; display: flex; align-items: center; gap: 12px; margin-bottom: 28px;
}
.sec-label::before { content: ''; display: block; width: 24px; height: 1px; background: linear-gradient(90deg, var(--accent1), var(--accent2)); }
.section { margin-bottom: 96px; }

/* ── index list ── */
.post-list { list-style: none; margin: 8px 0 0; padding: 0; border-top: 1px solid var(--border); }
.post { border-bottom: 1px solid var(--border); }
.post a {
  display: grid; grid-template-columns: 150px 1fr; gap: 28px; align-items: baseline;
  padding: 30px 0; text-decoration: none; color: inherit; transition: background .2s;
}
.post-date { font-family: var(--mono); font-size: 10.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--fg-mid); }
.post-title, .post-desc, .post-meta { display: block; }
.post-title { font-family: var(--serif); font-size: 26px; font-weight: 700; letter-spacing: -0.6px; line-height: 1.25; color: var(--fg); margin-bottom: 10px; transition: color .2s; }
.post a:hover .post-title { color: var(--accent1); }
.post-desc { font-family: var(--mono); font-size: 12.5px; line-height: 1.85; color: var(--fg-mid); max-width: 680px; }
.post-meta { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--fg-subtle, var(--fg-mid)); margin-top: 12px; }
.post-meta .tag { color: var(--accent1); }
.list-foot { font-family: var(--mono); font-size: 11.5px; line-height: 1.9; color: var(--fg-mid); margin-top: 28px; }
.list-foot a { color: var(--accent1); text-decoration: none; }

/* ── article ── */
.article { max-width: 860px; }
.crumb { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 3px; text-transform: uppercase; color: var(--fg-mid); text-decoration: none; margin-bottom: 26px; transition: color .2s; }
.crumb:hover { color: var(--accent1); }
.meta { font-family: var(--mono); font-size: 10.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--fg-mid); margin: 10px 0 56px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.meta .dot { color: var(--fg-subtle, var(--fg-mid)); }
.meta-md { color: var(--fg-mid); text-decoration: none; border-bottom: 1px solid var(--border); transition: color .2s, border-color .2s; }
.meta-md:hover { color: var(--accent1); border-color: var(--accent1); }
.prose { max-width: 720px; }
.prose h2 { font-family: var(--serif); font-size: 27px; font-weight: 700; letter-spacing: -0.6px; line-height: 1.3; color: var(--fg); margin: 56px 0 16px; }
.prose h2:first-child { margin-top: 0; }
.prose p { font-family: var(--mono); font-size: 13.5px; line-height: 1.95; color: var(--fg-mid); margin: 0 0 18px; }
.prose p strong, .prose li b { color: var(--fg); font-weight: 500; }
.prose a { color: var(--accent1); text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose code { font-family: var(--mono); font-size: 12px; color: var(--fg); background: var(--card-hover); border: 1px solid var(--border-soft, var(--border)); padding: 1px 6px; border-radius: 2px; }
.prose ul { list-style: none; margin: 0 0 18px; padding: 0; }
.prose li {
  font-family: var(--mono); font-size: 13px; line-height: 1.85; color: var(--fg-mid);
  padding: 10px 0 10px 22px; border-bottom: 1px solid var(--border-soft, var(--border)); position: relative;
}
.prose li:last-child { border-bottom: none; }
.prose li::before { content: ''; position: absolute; left: 0; top: 21px; width: 10px; height: 1px; background: var(--accent1); }
.callout {
  border: 1px solid var(--border); border-left: 2px solid var(--accent1); background: var(--card-bg);
  padding: 20px 24px; margin: 8px 0 28px; font-family: var(--mono); font-size: 12.5px; line-height: 1.9; color: var(--fg-mid);
}
.callout strong { color: var(--fg); font-weight: 500; }
/* answer pages (/answers): the two-sentence short answer that opens each page */
.answer-short { max-width: 720px; margin: 4px 0 22px; font-size: 13.5px; color: var(--fg); }
.answer-short strong { color: var(--accent1); letter-spacing: 1px; text-transform: uppercase; font-size: 10.5px; margin-right: 6px; }
.callout a { color: var(--accent1); text-decoration: none; }
/* research articles: headline numbers, bar lists and data tables */
.prose ul.stat-strip { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--border); background: var(--card-bg); margin: 8px 0 32px; max-width: 720px; }
.prose ul.stat-strip li { padding: 20px 18px; border-bottom: none; border-right: 1px solid var(--border-soft, var(--border)); }
.prose ul.stat-strip li::before { display: none; }
.prose ul.stat-strip li:last-child { border-right: none; }
.prose ul.stat-strip li b { display: block; font-family: var(--serif); font-size: 30px; font-weight: 700; letter-spacing: -1px; line-height: 1; color: var(--fg); margin-bottom: 8px; }
.prose ul.stat-strip li span { font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px; line-height: 1.6; text-transform: uppercase; color: var(--fg-subtle, var(--fg-mid)); display: block; }
.prose ul.bars { margin: 8px 0 28px; }
.prose ul.bars li { padding: 12px 0 14px; display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: baseline; }
.prose ul.bars li::before { display: none; }
.prose ul.bars li b { font-weight: 400; color: var(--fg-mid); }
.prose ul.bars li em { font-style: normal; color: var(--fg); font-variant-numeric: tabular-nums; }
.prose ul.bars li i { grid-column: 1 / -1; display: block; height: 3px; background: var(--border); position: relative; }
.prose ul.bars li i::after { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: calc(var(--v) * 1%); background: linear-gradient(90deg, var(--accent1), var(--accent2)); }
.prose ul.file-list { margin: 8px 0 28px; }
.prose ul.file-list li { padding: 18px 0 18px 44px; }
.prose ul.file-list li::before { display: none; }
.prose ul.file-list li svg { position: absolute; left: 0; top: 20px; width: 26px; height: 26px; color: var(--fg); }
.prose ul.file-list li b { font-family: var(--serif); font-size: 17px; font-weight: 700; letter-spacing: -.2px; }
.prose ul.file-list .fl-dom { font-size: 10.5px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--fg-subtle, var(--fg-mid)); margin-left: 8px; }
.prose ul.file-list .fl-line { display: block; margin-top: 4px; }
.table-scroll { overflow-x: auto; margin: 8px 0 28px; max-width: 720px; }
.data-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 12px; font-variant-numeric: tabular-nums; }
.data-table th { text-align: right; font-weight: 400; font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--fg-subtle, var(--fg-mid)); padding: 10px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td { text-align: right; padding: 12px 10px; color: var(--fg-mid); border-bottom: 1px solid var(--border-soft, var(--border)); }
.data-table th:first-child, .data-table td:first-child { text-align: left; padding-left: 0; color: var(--fg); }
.data-table td.hi { color: var(--accent1); }
.data-table td.lo { color: var(--amber); }
@media (max-width: 640px) { .prose ul.stat-strip { grid-template-columns: 1fr 1fr; } .prose ul.stat-strip li:nth-child(2) { border-right: none; } .prose ul.stat-strip li:nth-child(-n+2) { border-bottom: 1px solid var(--border-soft, var(--border)); } .data-table { min-width: 520px; } }
.article-end { margin-top: 72px; padding-top: 40px; border-top: 1px solid var(--border); }
.end-note { font-family: var(--mono); font-size: 13px; line-height: 1.9; color: var(--fg-mid); max-width: 640px; }
.end-note a { color: var(--accent1); text-decoration: none; }

.bottom-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 48px; border-top: 1px solid var(--border);
  background: var(--bar-bg); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); z-index: 100;
}
.bottom-bar-left { font-family: var(--mono); font-size: 10px; letter-spacing: 3px; color: var(--fg-mid); text-transform: uppercase; }
.bottom-bar-right { display: flex; align-items: center; gap: 32px; }
.bottom-link { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; color: var(--fg-mid); text-decoration: none; text-transform: uppercase; transition: color .2s; }
.bottom-link:hover { color: var(--fg); }
.bottom-icon svg { width: 14px; height: 14px; fill: currentColor; display: block; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--m-considered, .65s) ease, transform var(--m-considered, .65s) ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 768px) {
  body { cursor: auto; }
  .page-wrap { padding: 120px 24px 100px; }
  .section { margin-bottom: 72px; }
  .post a { grid-template-columns: 1fr; gap: 10px; padding: 26px 0; }
  .post-title { font-size: 22px; }
  .prose h2 { font-size: 23px; margin-top: 44px; }
  .bottom-bar { position: static; flex-direction: column; gap: 14px; padding: 28px 24px 32px; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .bottom-bar-right { flex-wrap: wrap; justify-content: center; column-gap: 24px; row-gap: 2px; }
}
/* ── The sky (2026-09-16, mockup W): a shallow grid floor and horizon under the page head, the constellation Z small in
   the corner as a signature. Same pieces as the homepage hero (index.html), held rather than cycling. ── */
.art-sky { position: relative; width: 100vw; margin: -8px 0 72px calc(50% - 50vw); height: 190px; }
.as-scene { position: absolute; inset: 0; overflow: hidden; pointer-events: none; perspective: 900px; perspective-origin: 50% -56%; }
.as-glow { position: absolute; left: 50%; top: 0; width: 1200px; height: 400px; transform: translate(-50%,-50%); pointer-events: none; background: radial-gradient(ellipse at center, rgba(0,232,122,.2), transparent 60%); }
.as-floor { position: absolute; left: -40%; right: -40%; top: 0; height: 1400px; transform: rotateX(72deg); transform-origin: top;
  background-image: linear-gradient(rgba(0,232,122,.22) 1px, transparent 1px), linear-gradient(90deg, rgba(0,232,122,.22) 1px, transparent 1px);
  background-size: 90px 90px; -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,1), rgba(0,0,0,0) 70%); mask-image: linear-gradient(180deg, rgba(0,0,0,1), rgba(0,0,0,0) 70%);
  animation: asFloor 3s linear infinite; }
@keyframes asFloor { to { background-position: 0 90px, 0 0; } }
.as-path { position: absolute; left: -40%; right: -40%; top: 0; height: 1400px; transform: rotateX(72deg); transform-origin: top; }
.as-path svg { width: 100%; height: 100%; display: block; }
.as-path path { stroke-dasharray: 60 40; animation: asFlow 1.6s linear infinite; }
@keyframes asFlow { to { stroke-dashoffset: -100; } }
.as-horizon { position: absolute; left: 0; right: 0; top: 0; height: 2px; z-index: 1; background: linear-gradient(90deg, transparent, var(--accent1), var(--accent2), transparent); box-shadow: 0 0 40px rgba(0,232,122,.6); }
[data-theme="light"] .as-glow { background: radial-gradient(ellipse at center, rgba(0,150,72,.16), transparent 60%); }
[data-theme="light"] .as-floor { background-image: linear-gradient(rgba(0,150,72,.26) 1px, transparent 1px), linear-gradient(90deg, rgba(0,150,72,.26) 1px, transparent 1px); }
[data-theme="light"] .as-horizon { box-shadow: 0 0 30px rgba(0,150,72,.35); }
.art-z { position: absolute; right: calc(50% - 50vw + 48px); top: 118px; width: 190px; height: 190px; pointer-events: none; z-index: 0; } /* pinned to the viewport edge, clear of the 1060px column */
@media (max-width: 1300px) { .art-z { width: 120px; height: 120px; top: 96px; right: calc(50% - 50vw + 40px); } } /* beside the crumb and eyebrow, above the title */
@media (max-width: 1100px) { .art-z { display: none; } }
@media (max-width: 640px) { .art-sky { height: 150px; margin-bottom: 56px; } }

@media (prefers-reduced-motion: reduce) {
  .as-floor, .as-path path { animation: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* read next (2026-09-12): static links between articles so non-JS crawlers see the graph */
.read-next { margin-top: 44px; border-top: 1px solid var(--border); padding-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.read-next-label { grid-column: 1 / -1; font-family: var(--mono); font-size: 10px; letter-spacing: 3px; text-transform: uppercase; color: var(--accent1); margin-bottom: 4px; }
.read-next a { display: flex; flex-direction: column; gap: 6px; text-decoration: none; border: 1px solid var(--border); padding: 18px 20px; transition: border-color .2s; }
.read-next a:hover { border-color: var(--accent1); }
.read-next .rn-sec { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--fg-mid); }
.read-next .rn-title { font-family: var(--serif); font-size: 17px; font-weight: 700; letter-spacing: -0.4px; color: var(--fg); line-height: 1.3; }
@media (max-width: 640px) { .read-next { grid-template-columns: 1fr; } }