:root {
  --primary: #1C1917;
  --primary-soft: #44403C;
  --muted-fg: #64748B;
  --accent: #A16207;
  --accent-hover: #92400E;
  --accent-glow: rgba(161, 98, 7, 0.06);
  --bg: #FAFAF9;
  --fg: #0C0A09;
  --card: #FFFFFF;
  --border: #D6D3D1;
  --border-light: #E7E5E4;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body.article-page {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  font-size: 18px;
}

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

.container { max-width: 760px; margin: 0 auto; padding: 0 24px; }

.nav {
  background: var(--primary);
  border-bottom: 2px solid var(--accent);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: 1120px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.nav-logo em { font-style: italic; font-weight: 400; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
}
.nav-links a:hover { color: #fff; }
.nav-subscribe {
  background: var(--accent);
  color: #0C0A09 !important;
  padding: 7px 16px;
  font-weight: 500;
}
.nav-subscribe:hover { background: var(--accent-hover); color: #fff !important; }

.article-main { padding: 64px 24px; }
.article-body {
  max-width: 680px;
  margin: 0 auto;
}
.article-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.article-body h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.article-deck {
  font-size: 20px;
  font-weight: 300;
  color: var(--primary-soft);
  line-height: 1.5;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  margin: 28px 0 12px;
}
.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { margin-bottom: 8px; }
.article-content a {
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
.article-content a:hover { border-bottom-color: var(--accent); }
.article-content strong { color: var(--primary); font-weight: 600; }
.article-content hr {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 32px 0;
}
.article-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--primary-soft);
}

.index-header {
  max-width: 680px;
  margin: 0 auto 40px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--primary);
}
.index-header h1 {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.index-header p {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-fg);
  margin-top: 8px;
}
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1120px;
  margin: 0 auto;
}
.index-card {
  background: var(--card);
  border: 1px solid var(--border-light);
  padding: 24px;
  transition: border-color 0.2s, box-shadow 0.25s;
}
.index-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(28, 25, 23, 0.08);
}
.index-card-date {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted-fg);
  margin-bottom: 12px;
}
.index-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 8px;
}
.index-card p {
  font-size: 14px;
  color: var(--primary-soft);
  line-height: 1.55;
}

.inline-cta {
  background: var(--primary);
  color: #fff;
  padding: 64px 24px;
  text-align: center;
}
.inline-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  margin-bottom: 12px;
}
.inline-cta p {
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
  font-weight: 300;
}
.inline-cta-form {
  display: flex;
  max-width: 440px;
  margin: 0 auto;
}
.inline-cta-form input {
  flex: 1;
  padding: 14px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-right: none;
  color: #fff;
  font-family: var(--font-body);
  font-size: 16px;
  outline: none;
}
.inline-cta-form input:focus { border-color: var(--accent); }
.inline-cta-form button {
  padding: 14px 24px;
  background: var(--accent);
  color: #0C0A09;
  border: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s;
}
.inline-cta-form button:hover { background: var(--accent-hover); color: #fff; }
@media (max-width: 480px) {
  .inline-cta-form { flex-direction: column; }
  .inline-cta-form input { border-right: 1px solid rgba(255,255,255,0.12); }
}

.footer {
  background: #0C0A09;
  color: rgba(255,255,255,0.4);
  padding: 48px 24px;
  text-align: center;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}
.footer-brand em { font-style: italic; color: var(--accent); }
.footer-note { font-size: 13px; line-height: 1.5; font-weight: 300; max-width: 600px; margin: 0 auto; }

/* ===== Phase 2-5 module styles + mobile responsive ===== */

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--border-light); background: var(--card);
}
.site-header .brand { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: var(--fg); text-decoration: none; }
.site-header nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-header nav a { color: var(--primary); text-decoration: none; font-size: 14px; font-weight: 500; }
.site-header nav a:hover { color: var(--accent); }

.site-footer { border-top: 1px solid var(--border-light); padding: 32px 24px; text-align: center; color: var(--muted-fg); font-size: 13px; }
.site-footer a { color: var(--muted-fg); text-decoration: underline; }

main .page, main .post, main .deep-dive, main article { max-width: 880px; margin: 24px auto; padding: 0 20px; }

.subscribe-form, .sponsor-form, .filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0; }
.subscribe-form input, .sponsor-form input, .sponsor-form textarea, .filters input, .filters select {
  padding: 10px 12px; font: 14px var(--font-body); border: 1px solid var(--border); border-radius: 4px; min-width: 0; flex: 1 1 200px;
}
.subscribe-form button, .sponsor-form button, .filters button, .upgrade form button {
  padding: 10px 16px; background: var(--accent); color: #fff; border: 0; border-radius: 4px; cursor: pointer; font: 500 14px var(--font-body);
}
.subscribe-form button:hover, .sponsor-form button:hover { background: var(--accent-hover); }

.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.data-table th, .data-table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border-light); }
.data-table th { background: var(--muted); font-weight: 600; }
.data-table a { color: var(--accent); }

.post-list { list-style: none; padding: 0; }
.post-list li { padding: 16px 0; border-bottom: 1px solid var(--border-light); }
.post-list li a { text-decoration: none; color: var(--fg); display: block; }
.post-list li h2 { font: 600 18px var(--font-display); margin: 0 0 4px; color: var(--primary); }
.post-list li p { color: var(--muted-fg); font-size: 14px; margin: 4px 0; }
.post-list li time { font-size: 12px; color: var(--muted-fg); }

.recent-daily { max-width: 880px; margin: 32px auto; padding: 0 20px; }
.recent-daily h2 { font: 600 22px var(--font-display); margin-bottom: 12px; }
.mini-post a { display: block; padding: 12px 0; border-bottom: 1px solid var(--border-light); text-decoration: none; color: var(--fg); }
.mini-post h3 { font: 500 16px var(--font-display); margin: 0 0 4px; }
.mini-post p { color: var(--muted-fg); font-size: 13px; margin: 0; }

.sponsor-slot, .ad-slot { margin: 24px auto; max-width: 880px; padding: 16px 20px; background: var(--muted); border-radius: 8px; text-align: center; }
.sponsor-slot a { color: var(--fg); text-decoration: none; display: inline-flex; align-items: center; gap: 12px; }
.sponsor-slot img { max-height: 32px; width: auto; }
.sponsor-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted-fg); display: block; margin-bottom: 6px; }
.house-ad strong { color: var(--accent); }
.house-ad p { color: var(--muted-fg); font-size: 14px; margin: 4px 0; }
.house-ad .cta { color: var(--accent); font-weight: 600; }

.cookie-banner {
  position: fixed; bottom: 16px; left: 16px; right: 16px;
  background: var(--primary); color: #fff; padding: 16px;
  border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap; z-index: 100;
}
.cookie-banner p { margin: 0; flex: 1 1 200px; font-size: 14px; }
.cookie-banner a { color: var(--accent); }
.cookie-banner button { padding: 8px 14px; background: var(--accent); color: #fff; border: 0; border-radius: 4px; cursor: pointer; font: 500 13px var(--font-body); }
.cookie-banner button#cookie-reject { background: transparent; border: 1px solid rgba(255,255,255,0.3); }

.banner { padding: 12px 16px; border-radius: 6px; margin: 16px 0; font-size: 14px; }
.banner.success { background: #DCFCE7; color: #166534; border: 1px solid #86EFAC; }
.banner.warn { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }

.upgrade { margin-top: 32px; padding: 24px; background: var(--card); border: 1px solid var(--border); border-radius: 8px; }
.upgrade h2 { font: 600 22px var(--font-display); margin-bottom: 8px; }
.upgrade form { display: inline-block; margin: 8px 8px 0 0; }

.benchmarks-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); margin-top: 24px; }
.benchmark-card { background: var(--card); padding: 20px; border-radius: 8px; border: 1px solid var(--border); }
.benchmark-card h2 { font: 600 16px var(--font-display); margin: 0 0 8px; color: var(--muted-fg); }
.benchmark-card .big { font: 700 32px var(--font-display); color: var(--fg); margin-bottom: 4px; }
.benchmark-card .period { font-size: 12px; color: var(--muted-fg); margin-bottom: 12px; }
.benchmark-card svg { display: block; margin: 8px 0; }
.benchmark-card .methodology { font-size: 12px; color: var(--muted-fg); margin-top: 12px; line-height: 1.5; }
.benchmark-card .source { font-size: 11px; color: var(--muted-fg); margin-top: 4px; }

.alert-list { list-style: none; padding: 0; }
.alert-list li { padding: 16px; border: 1px solid var(--border-light); border-radius: 6px; margin-bottom: 12px; background: var(--card); }
.alert-list .meta { font-size: 12px; color: var(--muted-fg); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.04em; }
.alert-list h3 { font: 600 16px var(--font-display); margin: 0 0 6px; }
.alert-list p { font-size: 14px; color: var(--primary-soft); margin: 4px 0; }
.alert-list li.severity-urgent { border-left: 3px solid #DC2626; }
.alert-list li.severity-warning { border-left: 3px solid #F59E0B; }
.alert-list li.severity-info { border-left: 3px solid var(--muted-fg); }

.deep-dive-list { list-style: none; padding: 0; }
.deep-dive-list li { padding: 16px 0; border-bottom: 1px solid var(--border-light); }
.deep-dive-list li a { text-decoration: none; color: var(--fg); display: block; }
.deep-dive-list h2 { font: 600 18px var(--font-display); margin: 0 0 4px; }

.search-results { list-style: none; padding: 0; }
.search-results li { padding: 12px 0; border-bottom: 1px solid var(--border-light); }
.search-results li a { font: 600 16px var(--font-display); color: var(--fg); text-decoration: none; margin-right: 8px; }
.search-results li small { color: var(--muted-fg); font-size: 12px; }
.search-results li p { color: var(--muted-fg); font-size: 14px; margin: 4px 0 0; }

.note { padding: 12px 16px; background: var(--muted); border-radius: 6px; font-size: 13px; color: var(--primary-soft); margin: 12px 0; }

/* ===== Mobile breakpoints ===== */
@media (max-width: 768px) {
  .site-header { flex-direction: column; align-items: flex-start; gap: 12px; padding: 12px 16px; }
  .site-header nav { gap: 12px; }
  .site-header nav a { font-size: 13px; }
  main .page, main .post, main .deep-dive, main article { padding: 0 16px; margin: 16px auto; }
  .data-table { font-size: 13px; display: block; overflow-x: auto; white-space: nowrap; }
  .data-table th, .data-table td { padding: 6px 8px; }
  .benchmarks-grid { grid-template-columns: 1fr; gap: 12px; }
  .benchmark-card { padding: 16px; }
  .benchmark-card .big { font-size: 26px; }
  .upgrade form { display: block; margin: 12px 0; }
  .upgrade form button { width: 100%; }
  .filters { flex-direction: column; }
  .filters input, .filters select { width: 100%; }
  .cookie-banner { left: 8px; right: 8px; bottom: 8px; padding: 12px; }
  .cookie-banner p { font-size: 13px; }
}

@media (max-width: 480px) {
  .site-header .brand { font-size: 18px; }
  .post-list li h2, .deep-dive-list h2 { font-size: 16px; }
  .alert-list li { padding: 12px; }
}