/* =========================================================
   RENARD CUIVRE — revue technique, encre marine et cuivre
   ========================================================= */

:root {
  --ink-900: #071018;
  --ink-850: #0c1924;
  --ink-800: #122838;
  --ink-700: #1a384c;
  --ink-600: #245068;
  --ink-500: #326480;
  --ink-400: #5d8498;

  --gold-600: #c45c28;
  --gold-500: #e4783a;
  --gold-400: #f09a62;
  --gold-300: #f6c2a4;

  --ivory-100: #e8f2f6;
  --ivory-200: #c5d6df;
  --ivory-300: #9bb3c0;
  --muted: #8eacb8;
  --muted-dim: #6d8794;

  --emerald-500: #3dcec0;
  --crimson-500: #e36b62;

  /* Sémantique */
  --bg: var(--ink-900);
  --bg-elevated: var(--ink-850);
  --bg-card: var(--ink-800);
  --border: rgba(61, 206, 192, 0.16);
  --border-strong: rgba(228, 120, 58, 0.45);
  --text: var(--ivory-100);
  --text-dim: var(--muted);
  --accent: var(--gold-500);
  --accent-bright: var(--gold-400);

  --serif: "Syne", "Segoe UI", sans-serif;
  --sans: "Outfit", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --container: 1180px;
  --container-narrow: 820px;
  --radius: 4px;
  --radius-sm: 3px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --shadow-lg: 0 30px 80px rgba(0,0,0,.5);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(rgba(61, 206, 192, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 206, 192, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-bright); }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

::selection { background: var(--gold-500); color: var(--ink-900); }

/* ---------- Typographie ---------- */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; line-height: 1.08; letter-spacing: -0.035em; color: var(--ivory-100); }
h1 { font-size: clamp(2.5rem, 5.4vw, 4.4rem); font-weight: 800; }
h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.7rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 700; color: var(--ivory-100); }
em { font-style: italic; color: var(--ivory-300); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  display: inline-block;
  margin-bottom: 0.8rem;
}

.lead {
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  line-height: 1.55;
  color: var(--ivory-200);
  font-weight: 300;
}

.serif-display { font-family: var(--serif); }
.italic { font-style: italic; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--container-narrow); }
.section { padding: clamp(60px, 9vw, 110px) 0; }
.section-sm { padding: clamp(40px, 6vw, 70px) 0; }

.grid { display: grid; gap: 24px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7, 16, 24, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--container); margin: 0 auto;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo svg { height: 34px; width: auto; }
.logo-mark { width: 40px; height: 40px; flex-shrink: 0; border-radius: 4px; }
.logo-word { display: flex; flex-direction: column; line-height: 1; }
.logo-text {
  font-family: var(--serif);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--ivory-100);
  line-height: 1;
}
.logo-text em { color: var(--accent); font-style: normal; }
.logo-sub {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  color: var(--muted-dim);
  text-transform: uppercase;
  display: block;
  margin-top: 4px;
}

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--ivory-300);
  letter-spacing: 0.01em;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--accent-bright);
  background: rgba(228, 120, 58, 0.08);
}

.nav-toggle { display: none; font-size: 1.4rem; padding: 6px; color: var(--ivory-200); }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  transition: all .25s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: var(--ink-900);
}
.btn-primary:hover { color: var(--ink-900); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(228,120,58,.3); }
.btn-ghost { border-color: var(--border-strong); color: var(--ivory-200); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-bright); background: rgba(228,120,58,.06); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(70px, 12vw, 140px) 0 clamp(50px, 8vw, 90px);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 85% 0%, rgba(61,206,192,.14), transparent 58%),
    radial-gradient(ellipse 40% 40% at 0% 90%, rgba(228,120,58,.12), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { margin-bottom: 1.4rem; }
.hero h1 .accent { color: var(--accent); font-style: normal; font-weight: 800; }
.hero-lead { margin-bottom: 2rem; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);
}
.stat .num { font-family: var(--serif); font-size: 1.9rem; font-weight: 700; color: var(--accent); }
.stat .label { font-size: 0.78rem; color: var(--muted); letter-spacing: 0.05em; text-transform: uppercase; }

/* Visuel hero — composition géométrique */
.hero-visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.hero-visual::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,13,18,.7));
}
.hero-visual .badge {
  position: absolute; bottom: 16px; left: 16px; z-index: 2;
  font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ivory-100);
  background: rgba(7,16,24,.72); padding: 8px 10px; border: 1px solid var(--border);
}

/* ---------- Cartes ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .3s ease, transform .3s ease;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.card-img { aspect-ratio: 16/10; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card-img img { transform: scale(1.04); }
.card-body { padding: 24px; }
.card-meta {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted-dim);
  margin-bottom: 12px;
}
.card-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-400); }
.card h3 { margin-bottom: 10px; font-size: 1.35rem; }
.card-excerpt { color: var(--muted); font-size: 0.92rem; line-height: 1.5; }
.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px; font-size: 0.85rem; font-weight: 600; color: var(--accent);
}
.card-link::after { content: "→"; transition: transform .2s ease; }
.card:hover .card-link::after { transform: translateX(4px); }

/* Tags / chips */
.tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem; font-weight: 600;
  font-family: var(--mono); letter-spacing: 0.06em;
  background: rgba(228,120,58,.1); color: var(--gold-300);
  border: 1px solid rgba(228,120,58,.2);
}
.tag.tag-filter {
  cursor: pointer; transition: all .2s ease; user-select: none;
}
.tag.tag-filter:hover { background: rgba(228,120,58,.18); }
.tag.tag-filter.active {
  background: var(--gold-500); color: var(--ink-900); border-color: var(--gold-500);
}
.tag.tag-emerald { background: rgba(79,168,119,.12); color: var(--emerald-500); border-color: rgba(79,168,119,.25); }
.tag.tag-crimson { background: rgba(200,85,61,.12); color: var(--crimson-500); border-color: rgba(200,85,61,.25); }

/* ---------- Section headings ---------- */
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; margin-bottom: 40px; flex-wrap: wrap;
}
.section-head h2 { max-width: 620px; }
.section-head .link-all {
  font-size: 0.85rem; font-weight: 600; color: var(--accent); white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px;
}

/* ---------- Grilles articles ---------- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.pair-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: stretch; }

/* ---------- Calculateur ---------- */
.calc {
  background: linear-gradient(160deg, var(--ink-850), var(--ink-800));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(28px, 4vw, 48px);
}
.calc-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}
.calc h3 { margin-bottom: 6px; }
.calc-field { margin-bottom: 22px; }
.calc-field label {
  display: block; font-size: 0.8rem; color: var(--muted);
  margin-bottom: 8px; letter-spacing: 0.03em;
}
.calc-field input, .calc-field select {
  width: 100%; padding: 12px 14px;
  background: var(--ink-900); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 0.95rem; transition: border-color .2s ease;
}
.calc-field input:focus, .calc-field select:focus { outline: none; border-color: var(--accent); }
.calc-result {
  background: var(--ink-900); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
}
.calc-result .res-label { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); }
.calc-result .res-value { font-family: var(--serif); font-size: 2.6rem; font-weight: 700; color: var(--accent); line-height: 1; margin: 6px 0 4px; }
.calc-result .res-note { font-size: 0.85rem; color: var(--muted); }
.calc-bar { margin-top: 18px; height: 8px; border-radius: 999px; background: var(--ink-700); overflow: hidden; }
.calc-bar .fill { height: 100%; background: linear-gradient(90deg, var(--gold-500), var(--gold-400)); border-radius: 999px; transition: width .4s ease; }

/* ---------- Tableau comparatif ---------- */
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.compare-table th, .compare-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.compare-table th {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); font-weight: 600;
}
.compare-table tbody tr:hover { background: rgba(228,120,58,.04); }
.compare-table td:first-child { font-weight: 600; color: var(--ivory-100); }
.compare-table .bar-cell { width: 160px; }
.mini-bar { height: 6px; border-radius: 999px; background: var(--ink-700); overflow: hidden; }
.mini-bar .mb-fill { height: 100%; background: var(--gold-500); border-radius: 999px; }

/* ---------- Accordion ---------- */
.accordion-item {
  border-bottom: 1px solid var(--border);
}
.accordion-trigger {
  width: 100%; text-align: left;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 4px;
  font-family: var(--serif); font-size: 1.15rem; font-weight: 600;
  color: var(--ivory-100);
}
.accordion-trigger:hover { color: var(--accent-bright); }
.accordion-icon {
  flex-shrink: 0; width: 24px; height: 24px;
  position: relative; transition: transform .3s ease;
}
.accordion-icon::before, .accordion-icon::after {
  content: ""; position: absolute; background: var(--accent);
  border-radius: 2px;
}
.accordion-icon::before { top: 50%; left: 4px; right: 4px; height: 2px; transform: translateY(-50%); }
.accordion-icon::after { left: 50%; top: 4px; bottom: 4px; width: 2px; transform: translateX(-50%); transition: transform .3s ease; }
.accordion-item.open .accordion-icon::after { transform: translateX(-50%) scaleY(0); }
.accordion-content {
  max-height: 0; overflow: hidden; transition: max-height .35s ease;
}
.accordion-content-inner { padding: 0 4px 24px; color: var(--muted); }

/* ---------- Glossaire ---------- */
.term {
  cursor: pointer; color: var(--accent-bright);
  border-bottom: 1px dashed var(--gold-600);
  transition: background .2s ease;
}
.term:hover { background: rgba(228,120,58,.1); border-radius: 3px; }

.glossary-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.glossary-item {
  padding: 20px 24px; border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.glossary-item:nth-child(2n) { border-right: none; }
.glossary-item h4 { font-family: var(--serif); font-size: 1.1rem; margin-bottom: 6px; }
.glossary-item p { font-size: 0.88rem; color: var(--muted); line-height: 1.5; }

/* Pop-up glossaire */
.popup-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5,7,10,.7); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px; opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s;
}
.popup-overlay.show { opacity: 1; visibility: visible; }
.popup {
  background: var(--ink-800); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 32px;
  max-width: 460px; width: 100%; box-shadow: var(--shadow-lg);
  transform: translateY(10px); transition: transform .25s ease;
}
.popup-overlay.show .popup { transform: translateY(0); }
.popup h4 { font-size: 1.4rem; margin-bottom: 10px; }
.popup p { color: var(--muted); font-size: 0.95rem; }
.popup-close {
  float: right; font-size: 1.4rem; color: var(--muted); line-height: 1;
}
.popup-close:hover { color: var(--accent); }

/* ---------- Article ---------- */
.article-hero {
  padding: clamp(50px, 8vw, 90px) 0 40px;
  border-bottom: 1px solid var(--border);
}
.article-meta { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-bottom: 20px; }
.article-hero h1 { margin-bottom: 1.2rem; max-width: 820px; }
.article-hero .lead { max-width: 680px; }
.article-cover {
  margin: 36px 0; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 21/9; border: 1px solid var(--border);
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }

.article-body { max-width: 720px; }
.article-body h2 { margin: 2.4rem 0 1rem; }
.article-body h3 { margin: 2rem 0 0.8rem; }
.article-body p { color: var(--ivory-200); font-size: 1.05rem; line-height: 1.75; }
.article-body ul { margin: 1rem 0 1.4rem; padding-left: 0; }
.article-body ul li { position: relative; padding-left: 24px; margin-bottom: 0.6rem; color: var(--ivory-200); }
.article-body ul li::before {
  content: ""; position: absolute; left: 0; top: 0.7em;
  width: 8px; height: 8px; border: 1.5px solid var(--accent); border-radius: 2px; transform: rotate(45deg);
}
.callout {
  background: linear-gradient(160deg, rgba(228,120,58,.06), transparent);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 22px 26px; margin: 2rem 0;
}
.callout .eyebrow { margin-bottom: 8px; }
.callout p { color: var(--ivory-200); margin: 0; }
.formula {
  font-family: var(--mono); font-size: 0.95rem;
  background: var(--ink-900); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 18px 22px;
  margin: 1.4rem 0; color: var(--gold-300); overflow-x: auto;
}
.article-footer {
  margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border);
  display: flex; gap: 16px; flex-wrap: wrap;
}

.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 56px; align-items: start; }
.toc { position: sticky; top: 90px; }
.toc h4 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.toc a { display: block; padding: 6px 0; font-size: 0.85rem; color: var(--muted); border-left: 2px solid var(--border); padding-left: 14px; }
.toc a:hover { color: var(--accent-bright); border-color: var(--accent); }

/* ---------- Carte info / contact ---------- */
.info-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
}
.info-card h4 { font-family: var(--serif); font-size: 1.2rem; margin-bottom: 14px; }
.info-card .icon-row { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 16px; }
.info-card .icon-row:last-child { margin-bottom: 0; }
.info-card .ico { color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.info-card .label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-dim); }
.info-card .val { font-size: 0.95rem; color: var(--ivory-200); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink-850);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 14px; }
.footer-brand p { color: var(--muted); font-size: 0.88rem; max-width: 320px; margin-top: 4px; flex: 1 1 100%; }
.footer-col h4 { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.footer-col a { display: block; padding: 5px 0; font-size: 0.88rem; color: var(--muted); }
.footer-col a:hover { color: var(--accent-bright); }
.footer-disclaimer {
  background: var(--ink-900); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 22px; margin-bottom: 30px;
  font-size: 0.82rem; color: var(--muted); line-height: 1.6;
}
.footer-disclaimer strong { color: var(--gold-300); font-weight: 600; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 0.8rem; color: var(--muted-dim); flex-wrap: wrap; gap: 12px;
}

/* ---------- Page header générique ---------- */
.page-header {
  padding: clamp(50px, 8vw, 90px) 0 40px;
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.page-header::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 80% 50%, rgba(228,120,58,.08), transparent 60%);
}
.page-header > * { position: relative; z-index: 1; }
.page-header h1 { margin-bottom: 1rem; }
.page-header .lead { max-width: 620px; }

.breadcrumb { display: flex; gap: 8px; font-size: 0.8rem; color: var(--muted-dim); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--ink-400); }

/* ---------- Legal / prose ---------- */
.container.container-narrow.prose {
  max-width: var(--container);
  column-count: 2;
  column-gap: 48px;
}
.prose { max-width: none; }
.prose h2, .prose h3 { break-after: avoid; }
.page-header .lead { max-width: none; }
.prose h2 { margin: 2.2rem 0 1rem; font-size: 1.5rem; }
.prose h3 { margin: 1.6rem 0 0.7rem; font-size: 1.2rem; }
.prose p { color: var(--ivory-200); line-height: 1.7; }
.prose ul { margin: 1rem 0; }
.prose ul li { position: relative; padding-left: 22px; margin-bottom: 0.5rem; color: var(--ivory-200); }
.prose ul li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

/* ---------- Cartes équipe / valeurs ---------- */
.value-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.value-card {
  padding: 28px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-card); transition: border-color .3s ease;
}
.value-card:hover { border-color: var(--border-strong); }
.value-card .num { font-family: var(--mono); font-size: 0.75rem; color: var(--accent); letter-spacing: 0.15em; }
.value-card h3 { margin: 12px 0 10px; font-size: 1.25rem; }
.value-card p { color: var(--muted); font-size: 0.9rem; }

/* ---------- Timeline éditoriale ---------- */
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 1px; background: var(--border-strong); }
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before { content: ""; position: absolute; left: -28px; top: 4px; width: 13px; height: 13px; border-radius: 50%; background: var(--ink-900); border: 2px solid var(--accent); }
.timeline-item .year { font-family: var(--mono); font-size: 0.78rem; color: var(--accent); letter-spacing: 0.1em; }
.timeline-item h4 { margin: 6px 0 8px; font-size: 1.15rem; }
.timeline-item p { color: var(--muted); font-size: 0.9rem; }

/* ---------- Filtres bar ---------- */
.filters-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 36px; }
.filters-bar .filter-label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-dim); margin-right: 6px; }

/* ---------- Animations utilitaires ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; }
.reveal.in { animation: fadeUp .7s ease forwards; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { aspect-ratio: 16/10; max-width: none; width: 100%; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; display: none; }
  .glossary-list { grid-template-columns: 1fr; }
  .glossary-item { border-right: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: 1fr; gap: 28px; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--ink-850); border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px; gap: 2px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; border-radius: 8px; }
  .nav-toggle { display: block; }
  .articles-grid, .pair-grid, .value-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .compare-table { font-size: 0.82rem; }
  .compare-table .bar-cell { display: none; }
  .container.container-narrow.prose { column-count: 1; }
  .header-inner { padding: 12px 18px; }
  .logo-sub { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; }
}