/* =====================================================================
   Comprendre les agents LLM de codage — feuille de style
   Direction : « éditorial-terminal ». Encre sombre et chaude, accent ambre,
   palette de coloration syntaxique reprise des couleurs ANSI de l'agent
   (cyan = agent, jaune = outil, vert = résultat, gris = raisonnement).
   ===================================================================== */

:root {
  /* — encre & surfaces — */
  --bg:        #100f0d;   /* encre chaude, presque noire */
  --bg-2:      #16140f;   /* fond du héros, légèrement plus chaud */
  --surface:   #1b1813;   /* cartes, encarts */
  --surface-2: #211d16;   /* survol */
  --code-bg:   #0b0a08;   /* blocs de code */
  --border:    #2c2820;
  --border-soft:#221f18;

  /* — texte — */
  --text:      #ece6da;   /* blanc cassé chaud */
  --text-dim:  #a59d8c;   /* secondaire */
  --text-faint:#6f685a;   /* discret */

  /* — accent principal (ambre terminal) — */
  --accent:    #e2a44c;
  --accent-2:  #f0c074;
  --accent-deep:#b87a2a;

  /* — palette de la boucle (= couleurs ANSI de l'agent, ui.go) — */
  --c-agent:   #74b6f0;   /* cyan  → 🤖 */
  --c-think:   #9b9384;   /* gris  → 💭 */
  --c-tool:    #e2b341;   /* jaune → 🔧 */
  --c-result:  #84d98a;   /* vert  → 📥 */
  --c-system:  #c8a6f0;   /* magenta */
  --c-danger:  #ef7167;   /* rouge */

  /* — typographie — */
  --serif: "Fraunces", Georgia, serif;
  --sans:  "Hanken Grotesk", system-ui, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1180px;
  --radius: 14px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: rgba(226,164,76,.28); color: #fff; }

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-2); }
em { font-style: italic; }
strong { font-weight: 600; color: #fbf6ec; }
code { font-family: var(--mono); }

/* ====================== barre de progression ====================== */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent-2));
  z-index: 100; transition: width .1s linear;
}

/* ====================== topbar ====================== */
.topbar {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(20px, 5vw, 56px);
  background: rgba(16,15,13,.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-weight: 600; letter-spacing: -.01em; }
.brand-mark { color: var(--accent); font-size: 1.25rem; filter: drop-shadow(0 0 10px rgba(226,164,76,.35)); }
.brand-text { color: var(--text); font-size: .98rem; }
.brand-dim { color: var(--text-faint); }
.topnav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.topnav > a { color: var(--text-dim); font-size: .92rem; font-weight: 500; }
.topnav > a:hover { color: var(--text); }
.topnav-cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border: 1px solid var(--border);
  border-radius: 999px; color: var(--text) !important; background: var(--surface);
  transition: border-color .2s, background .2s, transform .2s;
}
.topnav-cta:hover { border-color: var(--accent); background: var(--surface-2); transform: translateY(-1px); }

.lang-switch { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; background: rgba(255,255,255,.02); }
.lang-switch a { padding: 6px 12px; font-family: var(--mono); font-size: .78rem; font-weight: 700; color: var(--text-dim); line-height: 1; letter-spacing: .03em; transition: color .2s, background .2s; }
.lang-switch a + a { border-left: 1px solid var(--border); }
.lang-switch a:not(.lang-active):hover { color: var(--text); background: var(--surface-2); }
.lang-switch a.lang-active {
  color: #2a1b06;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.08);
  cursor: default;
}

@media (max-width: 760px) { .topnav > a:not(.topnav-cta) { display: none; } }

/* ====================== HERO ====================== */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(70px, 13vh, 140px) clamp(20px, 5vw, 56px) clamp(50px, 8vh, 90px);
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(226,164,76,.14), transparent 60%),
    radial-gradient(800px 480px at 8% 12%, rgba(116,182,240,.06), transparent 55%),
    var(--bg-2);
  border-bottom: 1px solid var(--border-soft);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
}
.hero-inner { position: relative; max-width: var(--maxw); margin: 0 auto; }

.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 22px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.4rem, 6.4vw, 5rem); line-height: 1.02;
  letter-spacing: -.02em; color: #fbf6ec; max-width: 18ch;
}
.hero h1 em {
  font-style: italic; color: var(--accent);
  font-variation-settings: "opsz" 120;
}
.lede {
  margin-top: 30px; max-width: 60ch; font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: var(--text-dim); line-height: 1.66;
}
.lede strong { color: var(--text); }
/* bloc promotionnel : gratuit / local / hors-ligne */
.hero-promo {
  margin-top: 32px; max-width: 62ch; padding: 22px 24px;
  border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 16px;
  background: linear-gradient(180deg, rgba(226,164,76,.085), rgba(226,164,76,.015));
}
.promo-badge {
  display: inline-block; font-family: var(--mono); font-size: .7rem; letter-spacing: .14em;
  text-transform: uppercase; color: #2a1b06; padding: 4px 11px; border-radius: 7px;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
}
.promo-lead { margin: 14px 0 0; color: var(--text-dim); font-size: 1.02rem; line-height: 1.6; max-width: none; }
.promo-lead b { color: var(--text); font-weight: 600; }

.promo-logos { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 18px; }
.promo-logos-label {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-faint); margin-right: 4px;
}
.logo-chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 13px;
  border: 1px solid var(--border); border-radius: 999px; background: rgba(255,255,255,.02);
  font-size: .86rem; font-weight: 600; color: var(--text-dim);
  transition: border-color .2s, color .2s, transform .2s;
}
.logo-chip:hover { border-color: var(--accent); color: var(--text); transform: translateY(-1px); }
.logo-chip svg { width: 15px; height: 15px; color: var(--accent-2); flex: none; }

.promo-points { list-style: none; margin: 18px 0 0; display: grid; gap: 10px; }
.promo-points li { display: flex; align-items: center; gap: 11px; font-size: .93rem; color: var(--text-dim); }
.promo-points li b { color: var(--text); }
.promo-points svg { width: 18px; height: 18px; color: var(--c-result); flex: none; }

.hero-cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: .98rem;
  transition: transform .2s var(--ease), box-shadow .25s, background .25s, border-color .2s;
}
.btn-primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #2a1b06 !important; box-shadow: 0 10px 30px -10px rgba(226,164,76,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px -12px rgba(226,164,76,.7); }
.btn-ghost { border: 1px solid var(--border); color: var(--text) !important; background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }

/* terminal du héros */
.terminal {
  margin-top: 56px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--code-bg); overflow: hidden; max-width: 760px;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,.8);
}
.term-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.term-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: #34302a; }
.term-bar .dot:nth-child(1) { background: #d65f53; }
.term-bar .dot:nth-child(2) { background: #d8a23c; }
.term-bar .dot:nth-child(3) { background: #6fb56f; }
.term-title { margin-left: 10px; font-family: var(--mono); font-size: .76rem; color: var(--text-faint); }
.term-body {
  padding: 20px 22px; font-family: var(--mono); font-size: .82rem; line-height: 1.95;
  white-space: pre-wrap; word-break: break-word; color: var(--text-dim);
}
.t-user   { color: var(--c-result); font-weight: 600; }
.t-step   { color: var(--text-faint); }
.t-think  { color: var(--c-think); font-style: italic; }
.t-tool   { color: var(--c-tool); font-weight: 600; }
.t-result { color: var(--c-result); }
.t-dim    { color: var(--text-faint); }
.t-done   { color: var(--c-result); font-weight: 600; }

/* ====================== LAYOUT (sommaire + contenu) ====================== */
.layout {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(40px, 7vh, 84px) clamp(20px, 5vw, 56px) 60px;
  display: grid; grid-template-columns: 226px 1fr; gap: clamp(30px, 5vw, 76px);
  align-items: start;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

/* — sommaire — */
.toc { position: sticky; top: 92px; }
@media (max-width: 900px) { .toc { display: none; } }
.toc-title {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--text-faint); margin-bottom: 16px;
}
.toc nav { display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--border); }
.toc-link {
  color: var(--text-dim); font-size: .9rem; font-weight: 500;
  padding: 6px 0 6px 16px; margin-left: -1px; border-left: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.toc-link:hover { color: var(--text); }
.toc-link.active { color: var(--accent); border-left-color: var(--accent); }

.toc-foot { margin-top: 34px; }
.anatomy-label {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--text-faint);
}
.anatomy { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 7px; }
.anatomy li { display: flex; flex-direction: column; gap: 1px; font-size: .82rem; }
.anatomy code { color: var(--accent); font-size: .8rem; }
.anatomy span { color: var(--text-faint); font-size: .76rem; }

/* ====================== CONTENU ====================== */
.content { min-width: 0; }
.chapter { padding-bottom: clamp(48px, 7vh, 90px); }
.chapter + .chapter { border-top: 1px solid var(--border-soft); padding-top: clamp(40px, 6vh, 72px); }
.chapter-num {
  display: inline-block; font-family: var(--mono); font-size: .82rem;
  color: var(--accent); letter-spacing: .1em; margin-bottom: 10px;
}
.content h2 {
  font-family: var(--serif); font-weight: 500; font-size: clamp(1.8rem, 4vw, 2.9rem);
  line-height: 1.1; letter-spacing: -.015em; color: #fbf6ec; margin-bottom: 22px;
}
.content h3.subhead {
  font-family: var(--sans); font-weight: 700; font-size: 1.18rem;
  color: var(--text); margin: 38px 0 14px; letter-spacing: -.01em;
}
.content p { margin-bottom: 18px; color: var(--text-dim); max-width: 68ch; }
.content p strong { color: var(--text); }

.dropcap::first-letter {
  font-family: var(--serif); font-size: 3.4em; line-height: .82; font-weight: 500;
  float: left; padding: 6px 12px 0 0; color: var(--accent);
}

/* — encart citation/insight — */
.callout {
  display: flex; gap: 16px; align-items: flex-start;
  margin: 30px 0; padding: 22px 24px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(226,164,76,.07), rgba(226,164,76,.02));
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
}
.callout-icon { color: var(--accent); font-size: .9rem; margin-top: 4px; }
.callout p { margin: 0; color: var(--text-dim); }

.aside-note {
  margin: 26px 0; padding: 18px 22px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border-soft);
  font-size: .96rem; color: var(--text-dim); line-height: 1.65;
}
.aside-note strong { color: var(--text); }

/* — comparaison chatbot / agent — */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 32px 0; }
@media (max-width: 620px) { .compare { grid-template-columns: 1fr; } }
.compare-col {
  padding: 22px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--border-soft);
}
.compare-col--accent { border-color: var(--border); background: linear-gradient(180deg, rgba(226,164,76,.06), transparent); }
.compare-col p { font-size: .96rem; margin-bottom: 18px; }
.compare-tag {
  display: inline-block; font-family: var(--mono); font-size: .72rem;
  letter-spacing: .1em; text-transform: uppercase; padding: 4px 10px;
  border-radius: 6px; margin-bottom: 14px;
}
.tag-flat { background: #26221b; color: var(--text-faint); }
.tag-accent { background: rgba(226,164,76,.16); color: var(--accent-2); }
.flow-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.flow-line .node {
  font-family: var(--mono); font-size: .76rem; padding: 5px 10px;
  border-radius: 6px; background: #211d16; color: var(--text-dim); border: 1px solid var(--border-soft);
}
.flow-line .arrow { color: var(--text-faint); font-size: .9rem; }
.flow-line .arrow-loop { color: var(--accent); font-size: 1.1rem; }
.node-think { color: var(--c-think) !important; }
.node-act   { color: var(--c-tool) !important; }
.node-obs   { color: var(--c-result) !important; }

/* ====================== blocs de code ====================== */
.code-block {
  margin: 24px 0; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--code-bg); overflow: hidden; position: relative;
}
.code-block::before {
  content: attr(data-lang);
  display: block; font-family: var(--mono); font-size: .74rem; color: var(--text-faint);
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border-soft);
  letter-spacing: .02em;
}
.code-block pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.code-block code { font-family: var(--mono); font-size: .855rem; line-height: 1.75; color: #d4cdbf; }
.code-block pre::-webkit-scrollbar { height: 8px; }
.code-block pre::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.copy-btn {
  position: absolute; top: 8px; right: 10px;
  font-family: var(--mono); font-size: .72rem; color: var(--text-faint);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 7px;
  padding: 5px 10px; cursor: pointer; opacity: 0; transition: opacity .2s, color .2s, border-color .2s;
}
.code-block:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.ok { color: var(--c-result); border-color: var(--c-result); }

/* coloration syntaxique — couleurs de la boucle */
.tok-com { color: var(--c-think); font-style: italic; }
.tok-str { color: var(--c-result); }
.tok-key { color: var(--c-system); }
.tok-typ { color: var(--c-agent); }
.tok-fn  { color: var(--accent-2); }
.tok-num { color: var(--c-tool); }

/* ====================== cartes outils ====================== */
.tool-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin: 26px 0; }
@media (max-width: 620px) { .tool-cards { grid-template-columns: 1fr; } }
.tool-card {
  padding: 20px; border-radius: 12px; background: var(--surface);
  border: 1px solid var(--border-soft); transition: transform .2s var(--ease), border-color .2s;
}
.tool-card:hover { transform: translateY(-3px); border-color: var(--border); }
.tool-ic { font-size: 1.4rem; }
.tool-card h3 { font-family: var(--mono); font-size: .98rem; margin: 10px 0 6px; color: var(--accent-2); }
.tool-card p { font-size: .9rem; margin: 0; }

/* ====================== garde-fous ====================== */
.guard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 28px 0; }
@media (max-width: 620px) { .guard-grid { grid-template-columns: 1fr; } }
.guard {
  position: relative; padding: 22px 22px 22px 56px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border-soft);
}
.guard-n {
  position: absolute; left: 20px; top: 22px;
  font-family: var(--serif); font-size: 1.5rem; font-weight: 600; color: var(--accent);
  line-height: 1;
}
.guard h3 { font-size: 1.02rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.guard p { font-size: .92rem; margin: 0; }

/* ====================== diagrammes (SVG) ====================== */
.diagram {
  margin: 30px 0; padding: 26px 20px 18px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border-soft);
}
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption {
  margin-top: 16px; font-size: .88rem; color: var(--text-faint);
  text-align: center; max-width: 64ch; margin-inline: auto; line-height: 1.55;
}
.diagram figcaption em { color: var(--text-dim); }

.dnode rect { fill: #211d16; stroke: var(--border); stroke-width: 1; }
.dnode--think rect { stroke: var(--c-think); }
.dnode--act rect   { stroke: var(--c-tool); }
.dnode--obs rect   { stroke: var(--c-result); }
.dn-icon  { fill: var(--text); font: 600 13px var(--mono); text-anchor: middle; }
.dn-label { fill: var(--text-faint); font: 11px var(--sans); text-anchor: middle; }
.dedge { fill: none; stroke: var(--text-faint); stroke-width: 1.4; stroke-dasharray: 4 4; }
.dcenter { fill: var(--accent); font: italic 13px var(--serif); text-anchor: middle; }

/* séquence */
.seq-life { stroke: var(--border); stroke-width: 1; stroke-dasharray: 3 4; }
.seq-head { fill: var(--text-dim); font: 600 12px var(--mono); text-anchor: middle; }
.seq-head--accent { fill: var(--accent); }
.seq-row line { stroke: var(--text-faint); stroke-width: 1.4; }
.seq-msg { fill: var(--text-dim); font: 11px var(--mono); text-anchor: middle; }
.seq-msg--tool { fill: var(--c-tool); }
.seq-msg--res  { fill: var(--c-result); }
.seq-exec { fill: #211d16; stroke: var(--border); }

/* compactage */
.cmp-label { fill: var(--text-faint); font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.cmp-old  { fill: #221f18; stroke: var(--border-soft); opacity: .65; }
.cmp-keep { fill: rgba(132,217,138,.12); stroke: var(--c-result); stroke-width: 1; }
.cmp-sum  { fill: rgba(226,164,76,.15); stroke: var(--accent); stroke-width: 1; }
.cmp-sumtext { fill: var(--accent-2); font: 600 11px var(--mono); text-anchor: middle; }
.cmp-arrow { fill: none; stroke: var(--text-faint); stroke-width: 1.4; }
.cmp-cap { fill: var(--text-faint); font: 10px var(--sans); text-anchor: middle; }

/* ====================== récap & repo ====================== */
.recap {
  margin-top: 34px; padding: 28px 30px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(226,164,76,.1), rgba(116,182,240,.04));
  border: 1px solid var(--border);
}
.recap-title { font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.recap-body { font-family: var(--serif); font-size: clamp(1.15rem, 2.2vw, 1.5rem); line-height: 1.5; color: var(--text); max-width: none; margin: 0; }
.recap-body strong { color: var(--accent-2); font-weight: 600; }

.repo-card {
  display: block; margin: 8px 0 10px; padding: 26px 28px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: var(--text) !important;
  transition: transform .25s var(--ease), border-color .25s, box-shadow .25s;
}
.repo-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 24px 50px -28px rgba(226,164,76,.4); }
.repo-head { display: flex; align-items: center; gap: 12px; }
.repo-head svg { color: var(--text); }
.repo-name { font-family: var(--mono); font-weight: 600; font-size: 1.05rem; }
.repo-arrow { margin-left: auto; color: var(--accent); font-size: 1.2rem; }
.repo-desc { margin: 14px 0 16px; color: var(--text-dim); }
.repo-meta { display: flex; flex-wrap: wrap; gap: 18px; font-family: var(--mono); font-size: .8rem; color: var(--text-faint); }
.repo-meta span { display: inline-flex; align-items: center; gap: 7px; }
.lang-dot { width: 10px; height: 10px; border-radius: 50%; background: #00ADD8; } /* Go */

.ext-list { list-style: none; margin: 8px 0 0; display: flex; flex-direction: column; gap: 10px; }
.ext-list li {
  position: relative; padding-left: 24px; color: var(--text-dim); font-size: .98rem;
}
.ext-list li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }

/* ====================== FAQ ====================== */
.faq { margin-top: 8px; border-top: 1px solid var(--border-soft); }
.faq-item { padding: 22px 2px; border-bottom: 1px solid var(--border-soft); }
.faq-item h3 { font-size: 1.06rem; font-weight: 700; color: var(--text); margin-bottom: 8px; letter-spacing: -.01em; }
.faq-item p { margin: 0; font-size: .98rem; }

/* ====================== footer ====================== */
.footer { border-top: 1px solid var(--border-soft); background: var(--bg-2); padding: 50px clamp(20px,5vw,56px); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: flex-start; gap: 18px; }
.footer .brand-mark { font-size: 1.5rem; }
.footer p { color: var(--text-faint); font-size: .92rem; line-height: 1.7; margin: 0; }
.footer-meta { color: var(--text-faint); font-size: .84rem; }
.footer-meta strong { color: var(--text-dim); }

/* ====================== bouton remonter ====================== */
.totop {
  position: fixed; bottom: 26px; right: 26px; width: 44px; height: 44px;
  border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 1.1rem; cursor: pointer; opacity: 0; pointer-events: none;
  transition: opacity .3s, transform .2s, border-color .2s; z-index: 50;
}
.totop.show { opacity: 1; pointer-events: auto; }
.totop:hover { border-color: var(--accent); transform: translateY(-2px); }

/* ====================== animations de révélation ====================== */
.reveal { opacity: 0; transform: translateY(18px); animation: rise .8s var(--ease) forwards; animation-delay: calc(var(--d, 0) * .09s); }
@keyframes rise { to { opacity: 1; transform: none; } }

.chapter { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.chapter.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal, .chapter { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}