/* ── Tokens (shared with main) ── */
:root {
  --bg: #fffdf8;
  --fg: #100c1e;
  --accent: #5e2dd8;
  --accent-soft: rgba(94,45,216,0.07);
  --accent-border: rgba(94,45,216,0.18);
  --muted: rgba(16,12,30,0.45);
  --border: rgba(16,12,30,0.1);
  --px: clamp(24px, 5vw, 80px);
  --display: clamp(40px, 5.6vw, 80px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px var(--px);
  background: rgba(255,253,248,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-left { display: flex; align-items: center; gap: 10px; }
.nav-dot { font-family: 'Syne', sans-serif; font-size: 26px; font-weight: 800; color: var(--accent); line-height: 1; }
.nav-name { font-family: 'Syne', sans-serif; font-size: 16px; font-weight: 700; letter-spacing: -0.01em; text-decoration: none; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--muted); text-decoration: none; transition: color 0.15s; }
.nav-links a:hover { color: var(--fg); }

/* ── Article hero ── */
.article-hero {
  padding: clamp(56px, 7vw, 96px) var(--px) clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 500;
  color: var(--muted); text-decoration: none;
  margin-bottom: clamp(28px, 4vw, 44px);
  transition: color 0.15s;
}
.breadcrumb:hover { color: var(--accent); }
.breadcrumb .arrow { font-size: 16px; }

.article-meta-top { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-bottom: 24px; }
.meta-journal {
  font-family: 'Syne', sans-serif;
  font-size: 11px; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 14px;
  border: 1px solid var(--accent-border);
  border-radius: 100px;
}
.meta-year { font-size: 13px; color: var(--muted); letter-spacing: 0.04em; }
.meta-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.meta-tag {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px; color: var(--muted);
}

.article-title {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  max-width: 22ch;
  margin-bottom: clamp(20px, 2.5vw, 32px);
  text-wrap: balance;
}
.article-title .em { color: var(--accent); }

.article-byline {
  font-size: clamp(14px, 1.3vw, 16px);
  color: var(--muted);
  line-height: 1.6;
}
.article-byline .au { color: var(--fg); font-weight: 500; }

/* ── Article body ── */
.article-body {
  padding: clamp(48px, 6vw, 80px) var(--px);
  display: grid;
  grid-template-columns: 1fr minmax(0, 720px) 1fr;
  row-gap: clamp(28px, 3.2vw, 44px);
}
.article-body > * { grid-column: 2; }
.article-body > .wide { grid-column: 2; }

.lede {
  font-family: 'Syne', sans-serif;
  font-size: clamp(20px, 1.7vw, 24px);
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--fg);
  text-wrap: pretty;
}
.lede .em { color: var(--accent); }

.article-body p {
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.75;
  color: rgba(16,12,30,0.78);
  text-wrap: pretty;
}
.article-body h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(18px, 1.5vw, 22px);
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-top: 12px;
  display: flex; align-items: baseline; gap: 14px;
}
.article-body h2::before {
  content: '';
  width: 28px; height: 1.5px;
  background: var(--accent);
  border-radius: 1px;
  flex-shrink: 0;
  transform: translateY(-5px);
}

.callout {
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  font-family: 'Inter', sans-serif;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.6;
  font-weight: 400;
  color: var(--fg);
  text-wrap: pretty;
}
.callout-label {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 11px; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 10px;
}

/* Figures */
figure.figure {
  display: flex; flex-direction: column; gap: 14px;
  padding: clamp(20px, 2.5vw, 36px) 0;
}
figure.figure img {
  width: 100%; border-radius: 3px;
  border: 1px solid var(--border);
  background: #fff;
}
figcaption {
  font-size: 13px; line-height: 1.6; color: var(--muted);
  display: grid; grid-template-columns: 28px 1fr; gap: 14px;
  padding-top: 4px;
}
figcaption .fignum {
  font-family: 'Syne', sans-serif; font-weight: 700;
  color: var(--accent); letter-spacing: 0.04em;
  font-size: 11px; text-transform: uppercase;
}
figcaption b { color: var(--fg); font-weight: 600; }

/* Stat strip */
.statstrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.statstrip > div {
  background: var(--bg);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 4px;
}
.statstrip .n {
  font-family: 'Syne', sans-serif;
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.01em;
}
.statstrip .l {
  font-size: 11px; color: var(--muted);
  letter-spacing: 0.08em; text-transform: uppercase;
  line-height: 1.4;
}

/* Action row */
.actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 24px; border-radius: 3px; font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; transition: all 0.15s; font-family: 'Inter', sans-serif; }
.btn-primary { background: var(--accent); color: #fff; border: 1.5px solid var(--accent); }
.btn-primary:hover { background: oklch(40% 0.22 285); border-color: oklch(40% 0.22 285); color: #fff; }
.btn-outline { background: transparent; color: var(--fg); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn .arrow { transition: transform 0.15s; }
.btn:hover .arrow { transform: translateX(2px); }

/* Adjacent pages */
.next-up {
  border-top: 1px solid var(--border);
  padding: clamp(40px, 5vw, 64px) var(--px);
}
.next-up-label {
  font-family: 'Syne', sans-serif;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.next-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: clamp(20px, 2.5vw, 32px);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s, box-shadow 0.18s;
}
.next-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(94,45,216,0.1); color: inherit; }
.next-card .nc-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.next-card .nc-journal { font-size: 11px; font-weight: 700; color: var(--accent); letter-spacing: 0.07em; text-transform: uppercase; }
.next-card .nc-year { font-size: 12px; color: var(--muted); }
.next-card .nc-title {
  font-family: 'Inter', sans-serif;
  font-size: clamp(15px, 1.3vw, 18px);
  font-weight: 600; line-height: 1.4;
  color: var(--fg);
  text-wrap: balance;
}
.next-card .nc-arrow {
  font-family: 'Syne', sans-serif;
  font-size: 14px; font-weight: 700;
  color: var(--accent);
  align-self: flex-end;
  margin-top: 8px;
}

/* ── Footer ── */
footer { padding: clamp(32px, 4vw, 48px) var(--px); border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
footer p { font-size: 13px; color: var(--muted); }
footer .footer-links { display: flex; gap: 20px; }
footer .footer-links a { font-size: 13px; color: var(--muted); text-decoration: none; }
footer .footer-links a:hover { color: var(--accent); }

/* ── Reveal ── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .article-body { grid-template-columns: 1fr; }
  .article-body > *,
  .article-body > .wide { grid-column: 1; }
  .statstrip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .article-title { max-width: none; }
}