/* === Guide article === */
.guide-page {
  min-height: 100vh;
  background: var(--paper);
}

.guide-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.guide-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 36px;
}
.guide-back:hover { color: var(--ink); }
.guide-hero-meta {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 24px;
}
.guide-hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.guide-hero-meta .dot {
  width: 4px; height: 4px;
  background: var(--accent);
  border-radius: 50%;
}
.guide-hero h1 {
  font-family: var(--serif);
  font-size: clamp(40px, 5.5vw, 76px);
  letter-spacing: -0.025em;
  line-height: 0.98;
  font-weight: 400;
  max-width: 12ch;
  text-wrap: balance;
}
.guide-hero h1 em { font-style: italic; color: var(--accent); }
.guide-hero-lede {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-2);
  max-width: 620px;
  margin-top: 28px;
}
.guide-authors {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}
.guide-authors .avatars {
  display: flex;
}
.guide-authors .avatars .avatar {
  margin-left: -8px;
  border: 2px solid var(--paper);
}
.guide-authors .avatars .avatar:first-child { margin-left: 0; }
.guide-authors .author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.guide-authors .names { font-weight: 500; }
.guide-authors .roles { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.guide-authors .pubdate {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
}

.guide-layout {
  display: grid;
  grid-template-columns: 240px 1fr 260px;
  gap: 56px;
  padding: 72px 0;
  align-items: start;
}
/* Layout sans TOC (glossaire, pages courtes) — article large + aside */
.guide-layout.no-toc { grid-template-columns: 1fr 280px; gap: 48px; }
/* Layout pleine largeur (article seul) */
.guide-layout.full { grid-template-columns: 1fr; max-width: 800px; margin: 0 auto; }
.guide-toc {
  position: sticky;
  top: 96px;
  font-size: 13px;
}
.guide-toc .toc-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.guide-toc ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  counter-reset: toc;
}
.guide-toc li {
  counter-increment: toc;
}
.guide-toc ol a {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  color: var(--ink-3);
  position: relative;
  line-height: 1.4;
  border-left: 2px solid transparent;
  padding-left: 12px;
  margin-left: -14px;
  transition: all 0.15s;
}
.guide-toc ol a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-4);
  flex-shrink: 0;
  padding-top: 2px;
}
.guide-toc ol a:hover { color: var(--ink); }
.guide-toc ol a.active {
  color: var(--ink);
  border-left-color: var(--accent);
  font-weight: 500;
}
.guide-toc .toc-cta {
  display: block;
  margin-top: 24px;
  text-align: center;
}

.guide-article {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-2);
}
.guide-layout.no-toc .guide-article { max-width: none; }
.guide-article h2 {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
  margin: 64px 0 24px;
  scroll-margin-top: 88px;
}
.guide-article h2:first-child { margin-top: 0; }
.guide-article h2 em { font-style: italic; color: var(--accent); }
.guide-article h2 .num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  display: block;
  margin-bottom: 8px;
  font-weight: 400;
}
.guide-article h3 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--ink);
  margin: 40px 0 14px;
}
.guide-article p {
  margin-bottom: 22px;
}
.guide-article p:first-of-type::first-letter {
  font-family: var(--serif);
  font-size: 76px;
  line-height: 0.85;
  float: left;
  padding: 6px 12px 0 0;
  color: var(--ink);
}
.guide-article a {
  color: var(--ink);
  border-bottom: 1px solid var(--ink-3);
  transition: border-color 0.15s;
}
.guide-article a:hover { border-bottom-color: var(--accent); }

/* Les liens stylés en boutons ne doivent pas hériter du style de lien d'article
   ni du style de lien d'encadré (couleur ink + soulignement) — sinon un
   .btn-primary devient noir sur noir. On bat la spécificité de `.tip-box .tip-content a`. */
.guide-article a.btn,
.tip-box .tip-content a.btn { border-bottom: 0; }
.guide-article a.btn-primary,
.tip-box .tip-content a.btn-primary { color: var(--paper); }
.guide-article a.btn-accent,
.tip-box .tip-content a.btn-accent { color: var(--accent-ink); }

/* La lettrine est réservée au 1er paragraphe de l'article : pas dans les
   encadrés, cartes ou colonnes latérales (sinon chaque callout l'affiche). */
.tip-content p:first-of-type::first-letter,
.feat p:first-of-type::first-letter,
.aside-block p:first-of-type::first-letter,
.callout p:first-of-type::first-letter {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  float: none;
  padding: 0;
  color: inherit;
}

.guide-article strong { color: var(--ink); font-weight: 600; }
.guide-article ul, .guide-article ol {
  margin: 16px 0 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.guide-article ul li { position: relative; list-style: none; padding-left: 22px; }
.guide-article ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}
.guide-article code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--paper-2);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Pull quote */
.pull-quote {
  margin: 48px -40px;
  padding: 36px 40px;
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.pull-quote .attr {
  display: block;
  margin-top: 18px;
  font-family: var(--mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Number callouts */
.callout-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 36px 0;
}
.callout {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 22px 20px;
  border-radius: var(--r-md);
}
.callout .num {
  font-family: var(--serif);
  font-size: 44px;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}
.callout .num em { font-style: italic; color: var(--accent); }
.callout .lbl {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-top: 10px;
}
.callout .desc {
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 8px;
  line-height: 1.45;
}

/* À retenir — bandeau compact dans le guide-hero (ex-tip-box) */
.guide-hero-points {
  margin-top: 28px;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  max-width: 920px;
}
.guide-hero-points .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.guide-hero-points strong {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin-top: 2px;
}
.guide-hero-points ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 32px;
  margin: 8px 0 0;
  padding: 0;
}
.guide-hero-points ul li {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.55;
  position: relative;
  padding-left: 16px;
}
.guide-hero-points ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-4);
  font-family: var(--mono);
}
@media (max-width: 720px) {
  .guide-hero-points ul { grid-template-columns: 1fr; }
}

/* Step-by-step calculation list (replaces stacked tip-box per step) */
.calc-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.calc-step:last-child {
  border-bottom: 1px solid var(--line);
}
.calc-step-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  padding-top: 4px;
  border-right: 1px solid var(--line);
}
.calc-step-body { min-width: 0; }
.calc-step-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: -0.005em;
  margin: 0;
}
.calc-step-desc {
  margin: 6px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
}
.calc-step-formula,
.calc-step-example {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
}
.calc-step-formula .lbl,
.calc-step-example .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  flex-shrink: 0;
}
.calc-step-formula code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--paper-2);
  padding: 2px 8px;
  border-radius: 4px;
  word-break: break-word;
}
.calc-step-example .ex { color: var(--ink-2); }
.calc-step-example .res {
  color: var(--accent);
  font-weight: 500;
  margin-left: 4px;
}
@media (max-width: 640px) {
  .calc-step {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .calc-step-num {
    border-right: 0;
    padding-top: 0;
  }
}

/* Tip box */
.tip-box {
  margin: 24px 0;
  padding: 16px 18px 16px 20px;
  background: transparent;
  border-radius: 0;
  border: 0;
  border-left: 2px solid var(--line);
  display: block;
  position: relative;
  max-width: 100%;
  overflow: hidden;
}
.tip-box.tip-accent {
  border-left-color: var(--accent);
}
.tip-box .tip-mark {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: transparent;
  color: var(--ink-3);
  padding: 0;
  margin-bottom: 8px;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  line-height: 1.4;
}
.tip-box.tip-accent .tip-mark {
  color: var(--accent);
}
.tip-box .tip-content code,
.tip-box .tip-content p code {
  display: inline-block;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.tip-box .tip-content { font-size: 15px; line-height: 1.6; }
.tip-box .tip-content > strong:first-child {
  display: block;
  color: var(--ink);
  margin-bottom: 8px;
  font-weight: 600;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: -0.005em;
}
.tip-box .tip-content ul,
.tip-box .tip-content ol { margin: 8px 0 4px 4px; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.tip-box .tip-content ul li { list-style: none; position: relative; padding-left: 18px; line-height: 1.55; }
.tip-box .tip-content ol li { list-style: decimal; margin-left: 18px; line-height: 1.55; }
.tip-box .tip-content ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}
.tip-box .tip-content p { margin: 8px 0; }
.tip-box .tip-content a { color: var(--ink); border-bottom: 1px solid var(--accent); }
.tip-box .tip-content a:hover { color: var(--accent); }

/* Comparison table */
.guide-table {
  margin: 32px 0;
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.guide-table thead {
  background: var(--ink);
  color: var(--paper);
}
.guide-table th {
  text-align: left;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}
.guide-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
}
.guide-table tr:last-child td { border-bottom: 0; }
.guide-table tbody tr:hover { background: var(--paper-2); }
.guide-table td.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.guide-table td:first-child { font-weight: 500; color: var(--ink); }

/* Aside */
.guide-aside {
  position: sticky;
  top: 96px;
  font-size: 13px;
}
.aside-block {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 22px 22px 24px;
  border-radius: var(--r-md);
  margin-bottom: 20px;
}
.aside-block .lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.aside-block h4 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  line-height: 1.1;
}
.aside-block p {
  color: var(--ink-2);
  margin-bottom: 16px;
  font-size: 13px;
}
.aside-block .btn { width: 100%; justify-content: center; }

.aside-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.aside-meta .row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
}
.aside-meta .row:last-child { border-bottom: 0; }
.aside-meta .val { color: var(--ink); }

/* Footnote */
.footnote {
  margin: 36px 0;
  padding: 18px 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
  font-family: var(--mono);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.footnote .marker {
  flex-shrink: 0;
  color: var(--accent);
  font-weight: 500;
}

/* Related */
.guide-related {
  border-top: 1px solid var(--line);
  padding: 64px 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.related-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 28px 24px 24px;
  border-radius: var(--r-md);
  display: flex;
  flex-direction: column;
  min-height: 220px;
  transition: border-color 0.15s, transform 0.2s;
}
.related-card:hover {
  border-color: var(--ink-3);
  transform: translateY(-2px);
}
.related-card .cat {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: auto;
}
.related-card h5 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 16px 0 14px;
}
.related-card .meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 1100px) {
  .guide-layout,
  .guide-layout.no-toc,
  .guide-layout.full { grid-template-columns: 1fr; gap: 32px; }
  /* Autoriser la colonne unique à rétrécir sous la largeur intrinsèque de son contenu
     (sinon un tableau large force un débordement horizontal de la page). */
  .guide-layout > * { min-width: 0; }
  .guide-toc, .guide-aside { position: static; }
  .guide-toc { order: 2; }
  .guide-aside { order: 3; }
  .guide-article { order: 1; max-width: 100%; }
  .pull-quote { margin: 36px 0; }
  .callout-row, .related-grid { grid-template-columns: 1fr; }
  /* Les tableaux larges scrollent horizontalement dans leur propre conteneur. */
  .guide-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}