/* Cadence Orale — cncliometrics.com (FR)
   Palette : Vert forêt profond #0F332B, Sauge clair #F3F7F5, Or bronze #C58B2B, Encre #152420
   Typographie : Fraunces (serif) + Hanken Grotesk (sans-serif)
   Préfixe CSS : co- */

:root {
  --co-bg: #F3F7F5;
  --co-white: #FFFFFF;
  --co-tint: #E4EFEA;
  --co-forest: #0F332B;
  --co-forest-mid: #17493E;
  --co-gold: #B67B1E;
  --co-gold-dark: #946214;
  --co-ink: #152420;
  --co-muted: #516660;
  --co-line: #CBE0D8;
  --co-radius: 12px;
  --co-serif: 'Fraunces', Georgia, serif;
  --co-sans: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.co-root {
  margin: 0;
  background: var(--co-bg);
  color: var(--co-ink);
  font-family: var(--co-sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--co-serif);
  color: var(--co-forest);
  line-height: 1.2;
  margin: 0 0 14px;
}
p { margin: 0 0 16px; }
a { color: var(--co-forest-mid); text-underline-offset: 3px; }
a:hover { color: var(--co-gold-dark); }
img { max-width: 100%; height: auto; display: block; }

.co-wrap { max-width: 1140px; margin: 0 auto; padding: 0 22px; }
.co-subpage { max-width: 780px; margin: 0 auto; padding: 44px 22px 72px; }

/* Two-level Masthead */
.co-masthead {
  background: var(--co-white);
  border-bottom: 2px solid var(--co-forest);
  position: sticky;
  top: 0;
  z-index: 50;
}
.co-masthead__top {
  background: var(--co-forest);
  color: #D7EAE3;
  font-size: 12px;
  padding: 6px 0;
}
.co-masthead__top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.co-masthead__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 20px;
}
.co-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--co-forest);
}
.co-brand__title strong {
  display: block;
  font-family: var(--co-serif);
  font-size: 1.32rem;
  line-height: 1.1;
}
.co-brand__title span { color: var(--co-gold); }
.co-brand__title small {
  display: block;
  font-size: 0.75rem;
  color: var(--co-muted);
  margin-top: 2px;
}
.co-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 22px;
}
.co-menu a:not(.co-cta) {
  color: var(--co-ink);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}
.co-menu a:not(.co-cta):hover { color: var(--co-gold-dark); }

.co-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--co-gold);
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 22px;
  border-radius: 8px;
  transition: background 0.15s ease;
}
.co-cta:hover { background: var(--co-gold-dark); }
.co-cta--nav { padding: 9px 15px; font-size: 0.86rem; background: var(--co-forest); }
.co-cta--nav:hover { background: var(--co-forest-mid); }
.co-cta--block { width: 100%; }

/* 2-Column Editorial Layout + Sticky Sidebar */
.co-stage {
  padding: 36px 0 64px;
}
.co-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(290px, 0.95fr);
  gap: 42px;
  align-items: start;
}
.co-badge {
  display: inline-block;
  background: var(--co-tint);
  color: var(--co-forest);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.co-main h1 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  margin-bottom: 14px;
}
.co-deck {
  font-size: 1.08rem;
  color: var(--co-muted);
  margin-bottom: 22px;
}
.co-figure {
  margin: 0 0 26px;
  background: var(--co-white);
  border: 1px solid var(--co-line);
  border-radius: var(--co-radius);
  overflow: hidden;
}
.co-figure figcaption {
  padding: 10px 15px;
  font-size: 0.8rem;
  color: var(--co-muted);
  background: var(--co-tint);
}
.co-main h2 {
  font-size: 1.45rem;
  margin: 34px 0 12px;
}

/* 3 Metric KPI Boxes */
.co-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 22px 0 28px;
}
.co-metric {
  background: var(--co-white);
  border: 1px solid var(--co-line);
  border-bottom: 4px solid var(--co-forest);
  border-radius: var(--co-radius);
  padding: 16px;
}
.co-metric strong {
  display: block;
  font-family: var(--co-serif);
  font-size: 1.65rem;
  color: var(--co-gold-dark);
  margin-bottom: 4px;
}
.co-metric span {
  font-size: 0.86rem;
  color: var(--co-muted);
  line-height: 1.4;
  display: block;
}

/* 2x2 Method Cards */
.co-quad {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 18px 0 28px;
}
.co-quad__box {
  background: var(--co-white);
  border: 1px solid var(--co-line);
  border-radius: var(--co-radius);
  padding: 18px;
}
.co-quad__box h3 { font-size: 1.04rem; margin-bottom: 6px; }
.co-quad__box p { margin: 0; font-size: 0.9rem; color: var(--co-muted); }

/* Comparison Table */
.co-table-box { overflow-x: auto; margin: 18px 0 28px; }
.co-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--co-white);
  border: 1px solid var(--co-line);
  font-size: 0.9rem;
}
.co-table th, .co-table td {
  padding: 12px 14px;
  border: 1px solid var(--co-line);
  text-align: left;
  vertical-align: top;
}
.co-table th {
  background: var(--co-forest);
  color: #fff;
}
.co-table td:first-child {
  font-weight: 700;
  color: var(--co-forest);
  background: var(--co-tint);
}

/* Sticky Sidebar Card */
.co-sidebar {
  position: sticky;
  top: 90px;
  display: grid;
  gap: 18px;
}
.co-sidecard {
  background: var(--co-white);
  border: 2px solid var(--co-forest);
  border-radius: var(--co-radius);
  padding: 22px 20px;
  box-shadow: 0 12px 28px rgba(15, 51, 43, 0.08);
}
.co-sidecard__kicker {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--co-gold-dark);
  background: #FDF4E3;
  padding: 3px 9px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.co-sidecard h2 { font-size: 1.2rem; margin-bottom: 10px; }
.co-sidecard ul {
  margin: 0 0 16px;
  padding-left: 18px;
  font-size: 0.88rem;
}
.co-sidecard li { margin-bottom: 7px; }
.co-sidecard__fine {
  font-size: 0.74rem;
  color: var(--co-muted);
  margin: 8px 0 0;
  text-align: center;
}

/* End Callout */
.co-endbox {
  background: var(--co-forest);
  color: #fff;
  border-radius: var(--co-radius);
  padding: 26px;
  margin: 30px 0;
}
.co-endbox h3 { color: #fff; font-size: 1.28rem; margin-bottom: 8px; }
.co-endbox p { color: #D4E8E1; font-size: 0.94rem; margin-bottom: 16px; }
.co-endbox__fine { font-size: 0.76rem !important; color: #A6C6BC !important; margin: 10px 0 0 !important; }

/* References */
.co-refs {
  background: var(--co-white);
  border: 1px solid var(--co-line);
  border-radius: var(--co-radius);
  padding: 6px 18px;
}
.co-refs summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--co-forest);
  padding: 10px 0;
}
.co-refs ol { margin: 8px 0 12px; padding-left: 20px; font-size: 0.84rem; color: var(--co-muted); }

.co-author-box {
  display: flex;
  gap: 18px;
  align-items: center;
  background: var(--co-white);
  border: 1px solid var(--co-line);
  border-radius: var(--co-radius);
  padding: 16px;
  margin: 18px 0 24px;
}
.co-author-box img { width: 110px; height: 110px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.co-small-note { font-size: 0.84rem; color: var(--co-muted); }

/* 4-Column Footer */
.co-footer {
  background: var(--co-forest);
  color: #D4E8E1;
  padding: 44px 0 26px;
  margin-top: 48px;
}
.co-footer__cols {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
  gap: 28px;
  padding-bottom: 28px;
}
.co-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 12px; }
.co-footer p { font-size: 0.84rem; color: #B9D5CC; line-height: 1.55; }
.co-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 7px; }
.co-footer a { color: #D4E8E1; text-decoration: none; font-size: 0.86rem; }
.co-footer a:hover { color: #fff; text-decoration: underline; }
.co-textlink {
  background: none;
  border: none;
  padding: 0;
  color: #F3C677;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}
.co-footer__disc {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 18px;
  font-size: 0.78rem;
  color: #A6C6BC;
}
.co-footer__copy { margin: 8px 0 0; }

/* Cookie Banner (CNIL 3 equal buttons) */
.co-cookie {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  max-width: 750px;
  margin: 0 auto;
  background: var(--co-white);
  border: 2px solid var(--co-forest);
  border-radius: var(--co-radius);
  box-shadow: 0 16px 38px rgba(15, 51, 43, 0.24);
  padding: 16px 20px;
  z-index: 120;
  display: none;
}
.co-cookie.is-active { display: block; }
.co-cookie__inner p { margin: 0 0 10px; font-size: 0.84rem; }
.co-cookie__opts {
  background: var(--co-bg);
  border: 1px solid var(--co-line);
  border-radius: 6px;
  padding: 8px 12px;
  margin-bottom: 10px;
  font-size: 0.82rem;
}
.co-cookie__opts label { display: block; margin: 4px 0; }
.co-cookie__btns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.co-cookie__btn {
  height: 38px;
  background: var(--co-forest);
  color: #fff;
  border: 1.5px solid var(--co-forest);
  border-radius: 6px;
  font-family: var(--co-sans);
  font-weight: 700;
  font-size: 0.84rem;
  cursor: pointer;
}
.co-cookie__btn:hover { background: var(--co-gold); border-color: var(--co-gold); }

@media (max-width: 900px) {
  .co-menu li:not(:last-child) { display: none; }
  .co-grid, .co-metrics, .co-quad, .co-footer__cols { grid-template-columns: 1fr; }
  .co-sidebar { position: static; }
}