:root {
  --ink: #142a3a;
  --muted: #4c6170;
  --line: #cbd8dc;
  --paper: #f8faf9;
  --white: #ffffff;
  --blue: #145f83;
  --blue-dark: #0b405d;
  --pale: #e8f1f2;
  --pending: #794924;
  --pending-bg: #f7eee4;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 0; min-height: 100vh; display: flex; flex-direction: column; }
body > main { flex: 1; }
:root { --page-gutter: clamp(18px, 2.5vw, 64px); }
a { color: var(--blue-dark); text-underline-offset: .18em; }
a:hover { color: #0a709e; }
a:focus-visible { outline: 3px solid #e29833; outline-offset: 4px; border-radius: 2px; }
.skip { position: absolute; top: -80px; left: 16px; z-index: 20; padding: 10px 14px; background: var(--white); }
.skip:focus { top: 12px; }
.site-header { background: var(--white); border-bottom: 1px solid var(--line); }
.header-inner { width: 100%; margin: auto; padding: 19px var(--page-gutter); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); font-weight: 720; letter-spacing: -.02em; line-height: 1.08; }
.brand-mark { display: inline-grid; place-items: center; height: 38px; width: 38px; flex: none; color: var(--white); background: var(--ink); border-radius: 2px; font-family: Georgia, serif; font-size: 24px; }
.site-nav { display: flex; gap: 24px; font-size: .92rem; font-weight: 650; }
.site-nav a { text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; }
.wrap { width: calc(100% - 2 * var(--page-gutter)); margin-inline: auto; }
.eyebrow { margin: 0 0 16px; color: var(--blue); font-size: .76rem; font-weight: 750; text-transform: uppercase; letter-spacing: .15em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.035em; }
h1 { font-size: clamp(2.8rem, 6vw, 5rem); line-height: 1.04; }
h2 { font-size: clamp(1.85rem, 3vw, 2.55rem); line-height: 1.15; }
h3 { font-size: 1.5rem; line-height: 1.22; }
p { line-height: 1.63; }
.hero { padding: clamp(64px, 8vw, 106px) 0 70px; background: var(--white); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(250px, .65fr); gap: clamp(36px, 6vw, 80px); align-items: end; }
.hero h1 { max-width: 770px; margin-bottom: 24px; }
.hero .lead { max-width: 735px; font-size: clamp(1.18rem, 2vw, 1.42rem); line-height: 1.52; margin-bottom: 0; }
.hero-note { padding: 24px 0 0 25px; border-left: 3px solid var(--blue); color: var(--muted); }
.hero-note strong { color: var(--ink); display: block; margin-bottom: 9px; }
.hero-note p { margin-bottom: 0; font-size: .94rem; }
.section { padding: 68px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 29px; }
.section-head h2 { margin-bottom: 0; }
.section-head p { margin: 0; max-width: 530px; color: var(--muted); }
.paper-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.paper-card { display: flex; flex-direction: column; min-height: 362px; padding: 28px; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--blue); }
.paper-card .number { color: var(--blue); font-size: .8rem; font-weight: 760; letter-spacing: .08em; margin-bottom: 25px; }
.paper-card h3 { margin-bottom: 15px; }
.paper-card p { color: var(--muted); font-size: .97rem; }
.card-bottom { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: end; gap: 10px; }
.card-bottom a { font-weight: 700; white-space: nowrap; }
.status { display: inline-block; padding: 6px 10px; background: var(--pending-bg); color: var(--pending); border-radius: 2px; font-size: .78rem; line-height: 1.25; font-weight: 700; }
.status.public { background: var(--pale); color: var(--blue-dark); }
.map-section { padding: 63px 0 76px; background: #eaf1f2; border-top: 1px solid var(--line); }
.map-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.map-item { border-top: 2px solid var(--ink); padding-top: 17px; }
.map-item .eyebrow { margin-bottom: 14px; }
.map-item h3 { margin-bottom: 9px; }
.map-item p { color: var(--muted); margin-bottom: 0; font-size: .97rem; }
.note-section { padding: 60px 0 73px; }
.note-grid { display: grid; grid-template-columns: minmax(0, .55fr) minmax(0, 1.45fr); gap: 38px; }
.note-grid h2 { margin-bottom: 0; }
.note-grid p { max-width: 760px; color: var(--muted); }
.note-grid p:last-child { margin-bottom: 0; }
.site-footer { padding: 26px 0 34px; border-top: 1px solid var(--line); color: var(--muted); font-size: .87rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-inner p { margin: 0; }
.article-hero { padding: 57px 0 54px; background: var(--white); border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; gap: 9px; color: var(--muted); font-size: .87rem; margin-bottom: 31px; }
.breadcrumbs a { color: var(--muted); }
.article-hero h1 { font-size: clamp(2.5rem, 5vw, 4.3rem); max-width: 920px; margin-bottom: 22px; }
.article-subtitle { color: var(--muted); font-size: clamp(1.18rem, 2vw, 1.4rem); max-width: 790px; line-height: 1.5; margin-bottom: 0; }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 21px; align-items: center; margin-top: 30px; font-size: .87rem; color: var(--muted); }
.article-body { padding: 60px 0 76px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: clamp(44px, 8vw, 110px); }
.content-section { padding-bottom: 39px; margin-bottom: 39px; border-bottom: 1px solid var(--line); }
.content-section:last-child { border-bottom: 0; margin-bottom: 0; padding-bottom: 0; }
.content-section h2 { font-size: 2rem; margin-bottom: 18px; }
.content-section p, .content-section li { font-size: 1.06rem; line-height: 1.7; }
.content-section p { margin-bottom: 16px; }
.content-section p:last-child { margin-bottom: 0; }
.content-section ul { margin: 0; padding-left: 21px; }
.content-section li + li { margin-top: 10px; }
.sidebar { align-self: start; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--blue); padding: 25px; }
.sidebar h2 { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: .78rem; font-weight: 760; line-height: 1.4; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 17px; }
.sidebar-block { padding-top: 21px; margin-top: 21px; border-top: 1px solid var(--line); }
.sidebar-block:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.sidebar-block strong { display: block; font-size: .9rem; margin-bottom: 6px; }
.sidebar-block p { font-size: .9rem; color: var(--muted); line-height: 1.5; margin-bottom: 11px; }
.sidebar-block a { font-size: .92rem; font-weight: 680; overflow-wrap: anywhere; }
.related { padding: 57px 0 72px; background: #eaf1f2; border-top: 1px solid var(--line); }
.related h2 { margin-bottom: 22px; }
.related-links { display: flex; gap: 14px; flex-wrap: wrap; }
.related-links a { display: block; padding: 15px 18px; background: var(--white); border: 1px solid var(--line); font-weight: 650; text-decoration: none; }
.related-links a:hover { border-color: var(--blue); }
@media (max-width: 850px) {
  .hero-grid, .article-layout, .note-grid { grid-template-columns: 1fr; }
  .hero-note { max-width: 650px; }
  .paper-grid, .map-grid { grid-template-columns: 1fr; }
  .paper-card { min-height: 0; }
  .section-head { align-items: start; flex-direction: column; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 2 * var(--page-gutter)); }
  .header-inner { padding: 15px 18px; align-items: start; flex-direction: column; gap: 14px; }
  .site-nav { gap: 20px; }
  .hero { padding: 54px 0; }
  .section, .note-section { padding: 54px 0; }
  .article-hero { padding: 37px 0 47px; }
  .article-body { padding: 45px 0 60px; }
  .paper-card { padding: 24px; }
}

/* --- 2026-09-25 additions: findings, why-it-matters, figures, citation, about --- */
.stat-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; margin: 4px 0 0; padding: 0; list-style: none; border-top: 2px solid var(--blue); }
.stat-list li { display: grid; grid-template-columns: 132px minmax(0, 1fr); align-items: start; gap: 24px; border-bottom: 1px solid var(--line); padding: 22px 0; margin: 0 !important; }
.stat-value { display: block; font-family: Georgia, "Times New Roman", serif; font-size: 2rem; line-height: 1.1; letter-spacing: -.03em; color: var(--ink); margin-bottom: 8px; }
.stat-label { display: block; font-size: .92rem !important; line-height: 1.45 !important; color: var(--muted); }
.fine { font-size: .9rem !important; color: var(--muted); }
.card-stat { margin: 4px 0 18px; padding: 12px 0 0; border-top: 1px solid var(--line); font-size: .92rem; color: var(--muted); line-height: 1.5; }
.card-stat strong { display: block; font-family: Georgia, serif; font-weight: 500; font-size: 1.55rem; color: var(--ink); letter-spacing: -.02em; }
.why-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.why-list li { padding-left: 18px; position: relative; }
.why-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; background: var(--blue); border-radius: 1px; }
.audience { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.audience span { font-size: .8rem; font-weight: 700; padding: 5px 9px; background: var(--pale); color: var(--blue-dark); border-radius: 2px; }
figure.chart { margin: 8px 0 0; }
figure.chart img, figure.chart svg { display: block; width: 100%; height: auto; background: var(--white); border: 1px solid var(--line); }
figure.chart figcaption { margin-top: 10px; font-size: .88rem; line-height: 1.5; color: var(--muted); }
.chart-svg text { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; fill: var(--ink); }
.chart-svg .muted { fill: var(--muted); }
.chart-svg .grid { stroke: #e3eaec; stroke-width: 1; }
.chart-svg .axis { stroke: var(--line); stroke-width: 1; }
.chart-svg .zero { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart-svg .hit { fill: transparent; }
.chart-svg g.row:hover .hit { fill: #eef4f6; }
details.data-table { margin-top: 10px; font-size: .88rem; }
details.data-table summary { cursor: pointer; color: var(--blue-dark); font-weight: 650; }
details.data-table table { border-collapse: collapse; margin-top: 8px; width: 100%; }
details.data-table th, details.data-table td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); }
.cite-box { position: relative; margin-top: 6px; }
.cite-box pre { margin: 0; padding: 16px 18px; background: #f1f5f6; border: 1px solid var(--line); overflow-x: auto; font-size: .8rem; line-height: 1.5; white-space: pre; }
.copy-btn { position: absolute; top: 8px; right: 8px; font: inherit; font-size: .78rem; font-weight: 700; padding: 5px 9px; background: var(--white); color: var(--blue-dark); border: 1px solid var(--line); border-radius: 2px; cursor: pointer; }
.copy-btn:hover { border-color: var(--blue); }
.why-section { padding: 63px 0 70px; background: var(--white); border-top: 1px solid var(--line); }
.why-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.why-grid h3 { font-size: 1.3rem; margin-bottom: 10px; }
.why-grid p { color: var(--muted); font-size: .97rem; margin-bottom: 0; }
.about-section { padding: 60px 0 70px; background: #eaf1f2; border-top: 1px solid var(--line); }
.about-grid { display: grid; grid-template-columns: minmax(0, .55fr) minmax(0, 1.45fr); gap: 38px; }
.about-grid p { color: var(--muted); max-width: 760px; }
.about-links { display: flex; flex-wrap: wrap; gap: 10px 22px; font-weight: 680; font-size: .95rem; }
@media (max-width: 850px) {
  .why-grid, .about-grid { grid-template-columns: 1fr; }
}

.content-section ul.stat-list, .content-section ul.why-list { padding-left: 0; }
.content-section .why-list li + li { margin-top: 0; }
.stat-list .stat-value { font-size: 1.75rem; }
.stat-list + .fine { margin-top: 14px; }
.article-layout > div, .article-layout > aside { min-width: 0; }
@media (max-width: 560px) { .site-nav { flex-wrap: wrap; gap: 8px 18px; } }
.about-role { margin: 14px 0 0; color: var(--muted); font-size: .92rem; font-weight: 650; line-height: 1.5; }
.about-facts { list-style: none; margin: 4px 0 22px; padding: 0; display: grid; gap: 10px; max-width: 760px; }
.about-facts li { color: var(--muted); font-size: .95rem; line-height: 1.55; padding-top: 10px; border-top: 1px solid var(--line); }
.about-facts strong { display: block; color: var(--ink); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 2px; }

/* data flow */
.data-section { padding: 66px 0 72px; background: var(--white); border-top: 1px solid var(--line); }
.flow { display: grid; grid-template-columns: minmax(0, 1fr) 34px minmax(0, 1fr) 34px minmax(0, 1fr); align-items: start; gap: 0; }
.flow-col { display: grid; gap: 12px; }
.flow-label { margin: 0 0 2px; color: var(--blue); font-size: .74rem; font-weight: 750; text-transform: uppercase; letter-spacing: .13em; }
.flow-card { display: block; padding: 15px 17px; background: var(--paper); border: 1px solid var(--line); border-left: 3px solid var(--muted); color: var(--ink); text-decoration: none; }
.flow-card strong { display: block; font-size: .98rem; margin-bottom: 5px; }
.flow-card span { display: block; font-size: .9rem; line-height: 1.5; color: var(--muted); }
.flow-key { background: var(--pale); border-left-color: var(--blue); }
.flow-paper { border-left-color: var(--blue); background: var(--white); }
a.flow-paper:hover, a.flow-card:hover { border-color: var(--blue); }
.flow-arrow { align-self: center; justify-self: center; width: 0; height: 0; border-top: 9px solid transparent; border-bottom: 9px solid transparent; border-left: 12px solid var(--blue); }
.data-note { margin: 26px 0 0; max-width: 900px; font-size: .9rem; color: var(--muted); }
@media (max-width: 850px) {
  .flow { grid-template-columns: 1fr; gap: 14px; }
  .flow-arrow { border-left: 9px solid transparent; border-right: 9px solid transparent; border-top: 12px solid var(--blue); border-bottom: 0; }
}

/* companion theory + terms */
.theory-card { margin-top: 17px; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr); gap: 28px; padding: 28px; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--muted); }
.theory-card .number { color: var(--muted); font-size: .8rem; font-weight: 760; letter-spacing: .08em; margin-bottom: 16px; }
.theory-card h3 { margin-bottom: 8px; }
.theory-sub { color: var(--muted); font-size: .95rem; margin: 0; }
.theory-body p { color: var(--muted); font-size: .97rem; }
.theory-body strong { color: var(--ink); }
.terms-section { padding: 62px 0 70px; background: var(--white); border-top: 1px solid var(--line); }
.terms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 38px; margin: 8px 0 0; }
.terms > div { padding: 14px 0; border-top: 1px solid var(--line); }
.terms dt { font-weight: 700; font-size: .98rem; margin-bottom: 4px; }
.terms dd { margin: 0; color: var(--muted); font-size: .94rem; line-height: 1.55; }
@media (max-width: 850px) { .theory-card { grid-template-columns: 1fr; gap: 10px; } .terms { grid-template-columns: 1fr; } }

/* --- 2026-09-26 polish: latest line, hero visual, photo, dark mode --- */
.latest { background: var(--pale); border-bottom: 1px solid var(--line); font-size: .9rem; color: var(--ink); }
.latest .wrap { display: flex; gap: 12px; align-items: baseline; padding: 10px 0; }
.latest-tag { flex: none; font-size: .72rem; font-weight: 760; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); }
.hero-visual { align-self: center; display: grid; gap: 10px; }
.hv-label { margin: 0 0 4px; font-size: .74rem; font-weight: 760; letter-spacing: .13em; text-transform: uppercase; color: var(--blue); }
.hv-step { position: relative; display: flex; gap: 14px; align-items: center; padding: 13px 16px; background: var(--paper); border: 1px solid var(--line); border-left: 3px solid var(--blue); text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.hv-step:hover { border-color: var(--blue); transform: translateX(3px); color: var(--ink); }
.hv-step + .hv-step::before { content: ""; position: absolute; left: 30px; top: -11px; width: 2px; height: 10px; background: var(--line); }
.hv-num { flex: none; font-family: Georgia, serif; font-size: 1.35rem; color: var(--blue); width: 30px; }
.hv-text strong { display: block; font-size: .96rem; }
.hv-text span { display: block; font-size: .86rem; color: var(--muted); line-height: 1.4; }
.hv-note { margin: 6px 0 0; font-size: .86rem; color: var(--muted); line-height: 1.5; }
.about-photo { display: block; width: 160px; height: 160px; object-fit: cover; border-radius: 50%; border: 3px solid var(--white); box-shadow: 0 1px 0 var(--line), 0 6px 18px rgba(20, 42, 58, .12); margin-bottom: 22px; }
.paper-card { transition: border-color .15s, box-shadow .15s; }
.paper-card:hover { box-shadow: 0 8px 24px rgba(20, 42, 58, .08); }
@media (max-width: 850px) { .hero-visual { margin-top: 8px; } }
@media (max-width: 560px) { .latest .wrap { flex-direction: column; gap: 2px; } }

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e4ebef; --muted: #a3b3bd; --line: #2b3942; --paper: #0e1418; --white: #151d22;
    --blue: #6db0da; --blue-dark: #9fcbe6; --pale: #1a2830; --pending: #e2b183; --pending-bg: #372819;
    color-scheme: dark;
  }
  a:hover { color: #bfe0f3; }
  .brand-mark { color: var(--paper); }
  .map-section, .related, .about-section { background: #111a1f; }
  .cite-box pre { background: #10171b; }
  .copy-btn { background: var(--white); }
  .chart-svg .grid { stroke: #243039; }
  .chart-svg g.row:hover .hit { fill: #1b262d; }
  .chart-svg [fill="#1a6fa0"] { fill: #3f92c4; }
  .chart-svg [stroke="#1a6fa0"] { stroke: #3f92c4; }
  .chart-svg [stroke="#b06a32"] { stroke: #c47f47; }
  .chart-svg [fill="#fff"] { fill: var(--white); }
  .chart-svg [stroke="#fff"] { stroke: var(--white); }
  .chart-svg [stroke="#9fb0ba"] { stroke: #4b5d68; }
  figure.chart img { border-color: var(--line); }
  .paper-card:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, .35); }
  .about-photo { box-shadow: 0 6px 18px rgba(0, 0, 0, .4); }
}
.hero-grid { grid-template-columns: minmax(0, 1.3fr) minmax(280px, .9fr); align-items: center; }
@media (max-width: 850px) { .hero-grid { grid-template-columns: 1fr; } }

/* --- 2026-09-29 additions: audio overview companion, video walkthrough, notebooklm resources --- */
.companion-section { padding: 34px 0 38px; background: var(--paper); border-bottom: 1px solid var(--line); }
.companion-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 22px; align-items: start; }
.companion-card { background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--blue); padding: 22px 24px; }
.companion-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 14px; margin-bottom: 10px; }
.companion-head h2 { font-family: Georgia, "Times New Roman", serif; font-size: 1.32rem; margin: 0; line-height: 1.25; }
.companion-badge { display: inline-block; padding: 4px 8px; background: var(--pale); color: var(--blue-dark); border-radius: 2px; font-size: .74rem; font-weight: 750; letter-spacing: .04em; text-transform: uppercase; }
.companion-desc { margin: 0 0 14px; font-size: .93rem; line-height: 1.55; color: var(--muted); }
.companion-audio { display: block; width: 100%; height: 40px; margin: 0 0 10px; }
.companion-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; font-size: .84rem; color: var(--muted); margin: 0; }
.companion-meta a { font-weight: 680; }
.video-details { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 12px; }
.video-details summary { cursor: pointer; font-size: .92rem; font-weight: 700; color: var(--blue-dark); list-style: none; display: inline-flex; align-items: center; gap: 6px; }
.video-details summary::-webkit-details-marker { display: none; }
.video-details summary::before { content: "▶"; font-size: .72rem; color: var(--blue); transition: transform .15s; }
.video-details[open] summary::before { transform: rotate(90deg); }
.video-wrap { margin-top: 12px; }
.video-wrap video { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #000; border-radius: 2px; }
.resource-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.resource-pills a { display: inline-block; padding: 6px 11px; background: var(--paper); border: 1px solid var(--line); font-size: .84rem; font-weight: 650; text-decoration: none; color: var(--blue-dark); border-radius: 2px; }
.resource-pills a:hover { border-color: var(--blue); color: var(--ink); }
@media (max-width: 850px) { .companion-grid { grid-template-columns: 1fr; } }


/* --- 2026-09-29 UX pass: data notes, distinct audio/video cards --- */
.data-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px 28px; margin-top: 30px; }
.data-notes > div { border-top: 1px solid var(--line); padding-top: 12px; }
.data-notes .dn-label { margin: 0 0 6px; font-size: .74rem; font-weight: 760; letter-spacing: .1em; text-transform: uppercase; color: var(--blue); }
.data-notes p { margin: 0; font-size: .9rem; line-height: 1.55; color: var(--muted); }
.companion-section { padding: 60px 0 68px; }
.companion-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 26px; align-items: start; }
.companion-card h3 { margin: 4px 0 8px; }
.companion-kind { margin: 0; font-size: .76rem; font-weight: 760; letter-spacing: .08em; text-transform: uppercase; display: flex; align-items: center; gap: 8px; }
.kind-icon { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; font-size: .72rem; letter-spacing: 0; }
.companion-audio-card { background: var(--pale); border: 1px solid var(--line); border-left: 4px solid var(--blue); }
.companion-audio-card .companion-kind { color: var(--blue-dark); }
.companion-audio-card .kind-icon { background: var(--blue); color: var(--white); }
.companion-video-card { background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--pending); border-left: 1px solid var(--line); }
.companion-video-card .companion-kind { color: var(--pending); }
.companion-video-card .kind-icon { background: var(--pending-bg); color: var(--pending); border: 1px solid var(--pending); }
.companion-video-card .video-wrap { margin-top: 4px; }
/* alternate section backgrounds in the new order */
.data-section { background: var(--paper); }
.data-section .flow-card:not(.flow-key) { background: var(--white); }
.note-section { background: var(--white); border-top: 1px solid var(--line); }
.companion-section { border-top: 1px solid var(--line); border-bottom: 0; }
@media (max-width: 850px) { .data-notes, .companion-grid { grid-template-columns: 1fr; } }

/* Readable findings and consistent paper navigation, 1 October 2026. */
.article-layout { grid-template-columns: minmax(0, 1fr) 280px; gap: 64px; }
.article-layout .stat-label { font-size: 1rem !important; line-height: 1.6 !important; }
.stat-value { margin-bottom: 0; font-variant-numeric: tabular-nums; }
.article-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.article-actions a { display: inline-flex; align-items: center; min-height: 44px; padding: 11px 17px; border: 1px solid var(--line); border-radius: 3px; font-size: .92rem; font-weight: 650; text-decoration: none; background: var(--white); }
.article-actions a:first-child { background: var(--blue-dark); color: var(--white); border-color: var(--blue-dark); }
.article-actions a:hover { outline: 1px solid var(--blue); }
.breadcrumbs { flex-wrap: wrap; line-height: 1.5; }
.content-section { scroll-margin-top: 24px; }
.sidebar { padding: 22px; }
.sidebar-block p { overflow-wrap: anywhere; }
.cite-box:has(.copy-btn) pre { padding-top: 52px; }
.copy-btn { min-height: 36px; min-width: 64px; }
details.data-table { max-width: 100%; overflow-x: auto; }
details.data-table summary { padding-block: 10px; }
details.data-table th { vertical-align: bottom; }
details.data-table td { vertical-align: top; }
figure.chart { margin-top: 24px; }
@media (prefers-color-scheme: dark) {
  .article-actions a:first-child { color: var(--paper); }
}
@media (max-width: 1050px) {
  .article-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 36px; }
  .header-inner { align-items: flex-start; }
  .brand { flex: none; }
}
@media (max-width: 850px) {
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .article-body { padding-top: 40px; }
  .sidebar { padding: 24px; }
}
@media (max-width: 560px) {
  .stat-list li { grid-template-columns: minmax(0, 1fr); gap: 9px; padding: 20px 0; }
  .article-layout .stat-label { font-size: .98rem !important; }
  .article-hero h1 { font-size: clamp(2.35rem, 9vw, 3rem); }
  .article-subtitle { font-size: 1.12rem; }
  .content-section h2 { font-size: 1.7rem; }
  .article-meta { margin-top: 22px; }
  .content-section p, .content-section li { font-size: 1rem; }
  .related-links { display: grid; grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

.card-new { margin: 0 0 14px; font-size: .9rem; line-height: 1.5; color: var(--ink); }
.card-new span { display: block; margin-bottom: 2px; font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* Paper summaries and focused navigation, 1 October 2026. */
.paper-summary { max-width: 800px; margin: 23px 0 0; font-size: clamp(1.08rem, 1.7vw, 1.25rem); line-height: 1.65; color: var(--ink); }
.article-hero h1 { max-width: 1000px; font-size: clamp(2.4rem, 4.5vw, 4rem); line-height: 1.1; }
.article-meta { margin-top: 22px; }
.article-subtitle { font-size: clamp(1rem, 1.5vw, 1.16rem); }
.file-kind { margin-left: 12px; font-size: .72rem; letter-spacing: .06em; opacity: .85; }
.article-layout { grid-template-columns: minmax(0, 1fr) 235px; gap: 64px; }
.paper-sidebar { position: sticky; top: 28px; background: transparent; border: 0; border-left: 1px solid var(--line); padding: 0 0 0 24px; }
.page-nav { display: grid; gap: 2px; }
.page-nav a { padding: 8px 0; font-size: .9rem; text-decoration: none; font-weight: 500; }
.page-nav a:hover { text-decoration: underline; }
.paper-sidebar .sidebar-block { padding-top: 18px; margin-top: 18px; }
.paper-sidebar .journal-submission p { font-size: .8rem; }
.paper-sidebar .sidebar-block a { font-size: .88rem; }
.article-layout .stat-list li { grid-template-columns: 172px minmax(0, 1fr); gap: 24px; padding: 21px 0; }
.article-layout .stat-value { font-size: 1.85rem; line-height: 1.25; }
.article-layout .stat-label { font-size: 1rem !important; line-height: 1.65 !important; }
.scope-note { padding: 22px 24px; background: var(--pale); border: 0; border-left: 3px solid var(--blue); }
.scope-note h2 { font-family: inherit; font-size: 1rem; font-weight: 650; letter-spacing: 0; }
.scope-note p { font-size: .98rem; }
.citation-details summary { cursor: pointer; padding: 12px 0; font-weight: 600; color: var(--blue-dark); }
.citation-details .cite-box { margin-top: 10px; }
.site-nav { flex-wrap: wrap; gap: 10px 22px; }
.article-actions a:focus-visible, .citation-details summary:focus-visible { outline: 3px solid #e29833; outline-offset: 4px; }
@media (max-width: 1050px) { .article-layout { grid-template-columns: minmax(0, 1fr) 210px; gap: 36px; } }
@media (max-width: 850px) {
  .article-layout { grid-template-columns: minmax(0, 1fr); }
  .paper-sidebar { position: static; border-left: 0; border-top: 1px solid var(--line); padding: 24px 0 0; }
  .page-nav { display: flex; flex-wrap: wrap; gap: 0 22px; }
}
@media (max-width: 560px) {
  .article-layout .stat-list li { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .article-actions { gap: 10px; }
  .article-actions a { justify-content: center; }
  .scope-note { padding: 20px; }
  .article-hero { padding-bottom: 36px; }
  .site-nav a { padding-block: 4px; }
}

figure.chart:has(svg) { max-width: 100%; overflow-x: auto; }
@media (max-width: 560px) { figure.chart svg { min-width: 560px; } }
.figure-link { display: block; }

/* Reader entry point, 9 October 2026. */
.reader-feature { padding: 38px 0; border-bottom: 1px solid var(--line); }
.reader-feature-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,.8fr); align-items: center; gap: 48px; }
.reader-feature h2 { margin-bottom: 14px; font-size: clamp(1.8rem,3vw,2.5rem); }
.reader-feature h2 a { color: var(--ink); text-decoration: none; }
.reader-feature h2 a:hover { text-decoration: underline; }
.reader-feature p:not(.eyebrow) { color: var(--muted); max-width: 620px; }
.reader-feature img { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #fff; }
.download-note { max-width: 800px; margin: 13px 0 0; color: var(--muted); font-size: .85rem; }
@media(max-width:850px) { .reader-feature-grid { grid-template-columns: minmax(0,1fr); gap: 20px; } .reader-feature img { max-width: 620px; } }