:root {
  --bg: #f8f7f2;
  --bg-2: #eeeade;
  --surface: #ffffff;
  --ink: #1f1e1a;
  --ink-2: #48453d;
  --ink-3: #928c80;
  --accent: #2e6b9e;
  --accent-light: #e8f2fa;
  --accent-mid: #4a8bbf;
  --border: #ddd8cc;
  --border-2: #c8c2b4;
  --radius: 6px;
  --radius-lg: 12px;
  --max: 800px;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Merriweather', Georgia, serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
nav {
  background: var(--ink);
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: 0.01em;
}
.nav-brand em {
  font-style: normal;
  color: var(--accent-mid);
}
.nav-tag {
  font-family: 'Inter', sans-serif;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

/* ── HERO ── */
.hero {
  background: var(--surface);
  border-bottom: 3px solid var(--accent);
  padding: clamp(2.5rem, 7vw, 4.5rem) clamp(1.25rem, 5vw, 3rem) clamp(2rem, 5vw, 3.5rem);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.hero-label::before {
  content: '';
  width: 16px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}
h1 {
  font-family: 'Merriweather', Georgia, serif;
  font-weight: 900;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.1rem;
  max-width: 700px;
}
.hero-deck {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--ink-2);
  max-width: 600px;
  margin-bottom: 1.75rem;
  line-height: 1.7;
  font-weight: 400;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: var(--ink-3);
  flex-wrap: wrap;
}
.hero-meta span { display: flex; align-items: center; gap: 0.35rem; }

/* ── SOMMAIRE ── */
.toc-wrap {
  max-width: var(--max);
  margin: 2.25rem auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}
.toc-inner {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-mid);
  border-radius: var(--radius);
  padding: 1.25rem 1.75rem;
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
}
.toc-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.2rem;
}
.toc-list {
  list-style: none;
  columns: 2;
  column-gap: 2rem;
}
.toc-list li { break-inside: avoid; }
.toc-list a {
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  color: var(--ink-2);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  line-height: 1.9;
  transition: color 0.15s;
}
.toc-list a::before {
  content: "↳";
  font-size: 0.68rem;
  color: var(--accent-mid);
  flex-shrink: 0;
}
.toc-list a:hover { color: var(--accent); }

/* ── ARTICLE ── */
article {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem) 5rem;
}
section { margin-bottom: 3rem; }
hr.sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.75rem 0;
}

h2 {
  font-family: 'Merriweather', Georgia, serif;
  font-weight: 900;
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 1rem;
  border-top: 2px solid var(--bg-2);
  padding-top: 0.75rem;
}
h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--ink);
  margin-bottom: 0.45rem;
  margin-top: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

p { margin-bottom: 1rem; color: var(--ink-2); font-size: 0.97rem; }
p:last-child { margin-bottom: 0; }
strong { color: var(--ink); font-weight: 700; }
a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
em { font-style: italic; }

/* ── IMAGES ── */
.article-img {
  margin: 1.75rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.article-img img {
  width: 100%;
  display: block;
  height: auto;
}
.img-caption {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: var(--ink-3);
  padding: 0.5rem 0.75rem;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

/* ── NOTE BOX ── */
.note {
  background: var(--accent-light);
  border: 1px solid #bdd8ef;
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  margin: 1.4rem 0;
}
.note p { color: var(--ink-2); margin: 0; font-size: 0.91rem; }
.note strong { color: var(--accent); }

/* ── ANALOGIE BOX ── */
.analogy {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  margin: 1.4rem 0;
}
.analogy-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.35rem 0;
  font-size: 0.91rem;
  color: var(--ink-2);
}
.analogy-row:not(:last-child) { border-bottom: 1px solid var(--border); }
.analogy-term {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--ink);
  min-width: 90px;
  flex-shrink: 0;
}

/* ── DEFENCE LIST ── */
.defence-list { list-style: none; margin: 1.1rem 0; }
.defence-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
  color: var(--ink-2);
}
.defence-list li:last-child { border-bottom: none; }
.defence-list li::before {
  content: "→";
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--accent-mid);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ── BACKUP GRID ── */
.backup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}
.backup-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.backup-card-icon { font-size: 1.1rem; margin-bottom: 0.4rem; display: block; }
.backup-card h3 { margin-top: 0; margin-bottom: 0.4rem; }
.backup-card p { font-size: 0.86rem; margin: 0; color: var(--ink-2); }

/* ── FAQ ── */
.faq-list { margin: 1rem 0; }
details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  background: var(--surface);
}
details[open] { border-color: var(--border-2); }
summary {
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  font-size: 1rem;
  color: var(--accent-mid);
  flex-shrink: 0;
  transition: transform 0.2s;
}
details[open] summary::after { transform: rotate(45deg); }
.faq-body {
  padding: 0 1.1rem 0.9rem;
  font-size: 0.89rem;
  color: var(--ink-2);
  line-height: 1.75;
  font-family: 'Inter', sans-serif;
}

/* ── CONCLUSION ── */
.conclusion {
  background: var(--ink);
  color: #f8f7f2;
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  margin: 2rem 0;
}
.conclusion h2 {
  font-family: 'Merriweather', Georgia, serif;
  color: #f8f7f2;
  font-size: 1.3rem;
  border-top: none;
  padding-top: 0;
  margin-bottom: 0.85rem;
}
.conclusion p { color: #b0a89e; margin-bottom: 0.75rem; font-size: 0.95rem; }
.conclusion p:last-child { margin: 0; }
.conclusion strong { color: #d8ccbe; }

/* ── FOOTER ── */
footer {
  background: var(--ink);
  border-top: 3px solid var(--accent);
  text-align: center;
  padding: 1.75rem 2rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .toc-inner { flex-direction: column; gap: 0.75rem; }
  .toc-list { columns: 1; }
  .backup-grid { grid-template-columns: 1fr; }
  .analogy-row { flex-direction: column; gap: 0.25rem; }
  .conclusion { padding: 1.5rem; }
}