@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400;1,8..60,600&family=Source+Sans+3:wght@300;400;600&display=swap');

/* ── Palette ── */
:root {
  --cream:       #F5F0E8;
  --cream-dark:  #EDE7D9;
  --cream-rule:  #D6CEBF;
  --ink:         #1A1714;
  --ink-2:       #4A4540;
  --ink-3:       #7A746C;
  --ink-4:       #A89F95;
  --accent:      #2B5C8A;
  --accent-pale: #E4EDF5;

  --body:        'Source Serif 4', Georgia, serif;
  --sans:        'Source Sans 3', system-ui, sans-serif;

  --max-w:       780px;
  --art-w:       640px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Top bar ── */
.topbar {
  border-bottom: 0.5px solid var(--cream-rule);
  padding: 10px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--cream);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-nav {
  display: flex;
  gap: 24px;
  list-style: none;
}
.topbar-nav a {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  transition: color 0.15s;
}
.topbar-nav a:hover { color: var(--ink); }
.topbar-home {
  font-family: var(--body);
  font-size: 14px;
  font-style: italic;
  font-weight: 300;
  color: var(--ink-2);
}

/* ── Masthead (homepage) ── */
.masthead {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 52px 28px 40px;
  border-bottom: 0.5px solid var(--cream-rule);
  text-align: center;
}
.masthead-lockup {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
}
.masthead-byline-block {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  line-height: 1.8;
  text-align: left;
}
.masthead-rule {
  width: 1px;
  height: 40px;
  background: var(--cream-rule);
}
.masthead-title {
  font-family: var(--body);
  font-size: 42px;
  font-weight: 300;
  letter-spacing: -0.5px;
  color: var(--ink);
  line-height: 1;
}
.masthead-title em {
  font-style: italic;
  color: var(--ink-3);
}
.masthead-sub {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 16px;
}
.masthead-tagline {
  font-family: var(--body);
  font-size: 15px;
  font-weight: 300;
  font-style: italic;
  color: var(--ink-3);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Category nav ── */
.cat-nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 12px 28px;
  border-bottom: 0.5px solid var(--cream-rule);
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.cat-nav::-webkit-scrollbar { display: none; }
.cat-btn {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 5px 13px;
  border-radius: 20px;
  border: 0.5px solid var(--cream-rule);
  color: var(--ink-3);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}
.cat-btn:hover { border-color: var(--ink-3); color: var(--ink-2); }
.cat-btn.active {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}

/* ── Featured strip ── */
.featured {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 28px;
  border-bottom: 0.5px solid var(--cream-rule);
  display: grid;
  grid-template-columns: 1fr 190px;
  gap: 32px;
  align-items: start;
  cursor: pointer;
}
.featured:hover .art-title { color: var(--accent); }
.featured-label {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

/* ── Article rows ── */
.list-header {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 28px;
  border-bottom: 0.5px solid var(--cream-rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.list-header-label {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.article-list {
  max-width: var(--max-w);
  margin: 0 auto;
  list-style: none;
}
.article-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 20px 28px;
  border-bottom: 0.5px solid var(--cream-rule);
  cursor: pointer;
  align-items: center;
  transition: background 0.1s;
  text-decoration: none;
  color: inherit;
}
.article-row:hover { background: var(--cream-dark); }
.article-row:hover .art-title { color: var(--accent); }
.row-thumb {
  width: 110px;
  aspect-ratio: 3/1;
  border-radius: 4px;
  overflow: hidden;
  border: 0.5px solid var(--cream-rule);
  background: var(--cream-dark);
  flex-shrink: 0;
}
.row-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Shared article card typography ── */
.art-title {
  font-family: var(--body);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 7px;
  color: var(--ink);
  transition: color 0.15s;
}
.featured .art-title { font-size: 24px; }
.art-tagline {
  font-family: var(--body);
  font-size: 14px;
  font-weight: 300;
  font-style: italic;
  color: var(--ink-3);
  margin-bottom: 12px;
  line-height: 1.5;
}
.art-meta {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--ink-4);
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.art-meta-sep { color: var(--cream-rule); }
.badge {
  font-family: var(--sans);
  font-size: 10px;
  padding: 2px 9px;
  border-radius: 10px;
  font-weight: 400;
}
.badge-power      { background: #f5ead6; color: #5c3a0a; }
.badge-money      { background: #ddeaf5; color: #1a4a72; }
.badge-technology { background: #e3f0d8; color: #244a0e; }

/* ── Thumb sketch placeholder ── */
.thumb {
  width: 190px;
  height: 126px;
  border: 0.5px solid var(--cream-rule);
  border-radius: 4px;
  background: var(--cream-dark);
  flex-shrink: 0;
  overflow: hidden;
}
.thumb svg { width: 100%; height: 100%; }

/* ── Show more ── */
.show-more-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 28px;
  text-align: center;
  border-bottom: 0.5px solid var(--cream-rule);
}
.show-more-btn {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-3);
  background: none;
  border: 0.5px solid var(--cream-rule);
  padding: 8px 24px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.15s;
}
.show-more-btn:hover { border-color: var(--ink-3); color: var(--ink); }

/* ── Footer ── */
.site-footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 28px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.footer-left {
  font-family: var(--body);
  font-size: 13px;
  font-style: italic;
  color: var(--ink-4);
}
.footer-right {
  display: flex;
  gap: 20px;
}
.footer-right a {
  font-family: var(--sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  transition: color 0.15s;
}
.footer-right a:hover { color: var(--ink); }

/* ── ARTICLE PAGE ── */
.article-page {
  max-width: var(--art-w);
  margin: 0 auto;
  padding: 52px 28px 80px;
}
.article-category {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.article-h1 {
  font-family: var(--body);
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--ink);
}
.article-deck {
  font-family: var(--body);
  font-size: 18px;
  font-weight: 300;
  font-style: italic;
  color: var(--ink-3);
  line-height: 1.55;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 0.5px solid var(--cream-rule);
}
.article-byline {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-4);
  margin-bottom: 40px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.article-body {
  font-family: var(--body);
  font-size: 18px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--ink);
}
.article-body p { margin-bottom: 1.5em; }
.article-body p:first-child::first-letter {
  font-size: 4em;
  font-weight: 300;
  float: left;
  line-height: 0.75;
  margin: 0.08em 0.08em 0 0;
  color: var(--ink-2);
}
.article-body sup {
  font-family: var(--sans);
  font-size: 10px;
  color: var(--accent);
  font-weight: 600;
}
.article-body a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 0.5px; }

/* Endnotes */
.endnotes {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 0.5px solid var(--cream-rule);
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-3);
  line-height: 1.7;
}
.endnotes-title {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 16px;
}
.endnote { margin-bottom: 8px; display: flex; gap: 10px; }
.endnote-num { color: var(--accent); font-weight: 600; flex-shrink: 0; }

/* Article hero */
.article-hero {
  width: 100%;
  aspect-ratio: 3/1;
  background: var(--cream-dark);
  border-radius: 4px;
  margin-bottom: 36px;
  overflow: hidden;
  border: 0.5px solid var(--cream-rule);
}
.article-hero svg { width: 100%; height: 100%; }

/* Prev / Next nav */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 0.5px solid var(--cream-rule);
}
.article-nav-card {
  padding: 16px 18px;
  border: 0.5px solid var(--cream-rule);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.article-nav-card:hover { background: var(--cream-dark); border-color: var(--ink-4); }
.article-nav-card.next { text-align: right; }
.nav-dir {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 6px;
}
.nav-title {
  font-family: var(--body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--ink);
}

/* ── ABOUT PAGE ── */
.about-page {
  max-width: var(--art-w);
  margin: 0 auto;
  padding: 52px 28px 80px;
}
.about-h1 {
  font-family: var(--body);
  font-size: 36px;
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 32px;
  color: var(--ink);
}
.about-body {
  font-family: var(--body);
  font-size: 18px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--ink);
}
.about-body p { margin-bottom: 1.5em; }
.about-body p:first-child::first-letter {
  font-size: 4em;
  font-weight: 300;
  float: left;
  line-height: 0.75;
  margin: 0.08em 0.08em 0 0;
  color: var(--ink-2);
}
.about-section-rule {
  border: none;
  border-top: 0.5px solid var(--cream-rule);
  margin: 40px 0;
}
.about-label {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 16px;
}
.ai-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 32px;
}
.ai-card {
  background: var(--cream-dark);
  border: 0.5px solid var(--cream-rule);
  border-radius: 4px;
  padding: 16px 18px;
}
.ai-card-name {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 5px;
}
.ai-card-role {
  font-family: var(--body);
  font-size: 13px;
  font-style: italic;
  color: var(--ink-3);
  line-height: 1.5;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .featured { grid-template-columns: 1fr; }
  .thumb { display: none; }
  .row-thumb { display: none; }
  .article-row { grid-template-columns: 1fr; }
  .article-h1, .about-h1 { font-size: 28px; }
  .article-body, .about-body { font-size: 17px; }
  .ai-card-grid { grid-template-columns: 1fr; }
  .masthead-title { font-size: 32px; }
  .article-nav { grid-template-columns: 1fr; }
}