/* BETA — manifeste hors-sol. Rail latéral flottant transparent + scène 3D CSS.
   Palette héritée de la Mini App (web/src/index.css). */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #08090c;
  --card: #13131a;
  --elev: #1a1a23;
  --line: #2a2a3a;
  --line-soft: #1c1c26;
  --ink: #e4e4e7;
  --ink2: #9a9aab;
  --mute: #63636f;
  --accent: #31D4A2;
  --accent2: #1FB888;
  --safe: #00ff88;
  --med: #ffaa00;
  --dyn: #ff4444;
  --sans: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 40px; }
body {
  font-family: var(--sans);
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(49, 212, 162, .05), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(34, 158, 217, .03), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(49, 212, 162, .25); }
a { color: inherit; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

main { margin-left: 92px; }
.wrap { max-width: 1020px; margin: 0 auto; padding: 0 30px; }
.narrow { max-width: 720px; margin: 0 auto; }

/* ═════════ Rail latéral — flottant, transparent ═════════ */
.rail {
  position: fixed; left: 0; top: 0; bottom: 0; width: 92px; z-index: 100;
  display: flex; flex-direction: column; align-items: center;
  padding: 26px 0 24px; pointer-events: none;
}
.rail-mark {
  pointer-events: auto; text-decoration: none;
  width: 44px; height: 44px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 21px; font-weight: 600; color: var(--accent);
  border: 1px solid rgba(49, 212, 162, .3);
  background: rgba(8, 9, 12, .35);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 0 22px rgba(49, 212, 162, .1), 0 1px 0 rgba(255,255,255,.04) inset;
  transition: border-color .25s, box-shadow .25s;
}
.rail-mark:hover { border-color: rgba(49, 212, 162, .55); box-shadow: 0 0 30px rgba(49, 212, 162, .2); }
.rail-mark:focus { outline: none; }
.rail-mark:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }

/* Règle graduée — scrubbable (glisser = parcourir la page) */
.rail-progress {
  flex: 1; width: 20px; margin: 18px 0 12px; position: relative;
  pointer-events: auto; cursor: ns-resize; touch-action: none;
  background:
    repeating-linear-gradient(180deg, rgba(255,255,255,.11) 0 1px, transparent 1px 11px) 50% 0 / 9px calc(100% - 1px) no-repeat,
    linear-gradient(rgba(255,255,255,.06), rgba(255,255,255,.06)) 50% 0 / 1px 100% no-repeat;
}
.rail-progress i {
  position: absolute; top: 0; left: 50%; width: 1px; height: 0; margin-left: -.5px;
  background: linear-gradient(180deg, var(--accent2), var(--accent));
  box-shadow: 0 0 8px rgba(49, 212, 162, .45);
}
.rail-cursor {
  position: absolute; left: 50%; top: 0; width: 13px; height: 3px;
  transform: translate(-50%, -1px); border-radius: 2px;
  background: var(--accent); box-shadow: 0 0 10px rgba(49, 212, 162, .55);
}
.rail-read {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  font-family: var(--mono); margin-bottom: 16px;
}
.rail-read b { font-size: 10px; font-weight: 600; color: var(--accent); }
.rail-read span { font-size: 8.5px; letter-spacing: .8px; color: var(--mute); }

.rail-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 20px;
}
.rail-nav a {
  pointer-events: auto; position: relative; text-decoration: none;
  font-family: var(--mono); font-size: 10px; letter-spacing: 1px; color: var(--mute);
  display: flex; align-items: center; gap: 9px;
  padding: 2px 0; transition: color .25s;
  background: var(--bg);
}
.rail-nav a::before { content: ""; width: 12px; height: 1px; background: currentColor; transition: width .25s; }
.rail-nav a:hover { color: var(--ink2); }
.rail-nav a.active { color: var(--accent); }
.rail-nav a.active::before { width: 20px; }
.rail-nav .lbl {
  position: absolute; left: calc(100% + 14px); top: 50%; transform: translate(-8px, -50%);
  opacity: 0; white-space: nowrap; pointer-events: none;
  font-size: 10px; letter-spacing: 1.8px; text-transform: uppercase; color: var(--ink2);
  background: rgba(10, 10, 15, .78); border: 1px solid var(--line-soft);
  padding: 5px 10px; border-radius: 7px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: opacity .22s, transform .22s;
}
.rail-nav a:hover .lbl, .rail-nav a.active .lbl { opacity: 1; transform: translate(0, -50%); }

.rail-tg {
  pointer-events: auto; text-decoration: none;
  writing-mode: vertical-rl; transform: rotate(180deg);
  font-family: var(--mono); font-size: 10px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--ink2); transition: color .25s;
}
.rail-tg:hover { color: var(--accent); }

/* Barre mobile — flottante transparente */
.mtop {
  display: none; position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px 18px; align-items: center; justify-content: space-between;
  background: linear-gradient(180deg, rgba(8, 9, 12, .88) 0%, rgba(8, 9, 12, .4) 70%, transparent 100%);
  pointer-events: none;
}
.mtop > * { pointer-events: auto; }
.mtop .rail-mark { width: 40px; height: 40px; font-size: 19px; border-radius: 12px; }
.mtop-cta {
  font-size: 13px; font-weight: 600; color: #08090c; text-decoration: none;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent2) 100%);
  padding: 9px 18px; border-radius: 999px;
  box-shadow: 0 6px 20px -8px rgba(49, 212, 162, .55);
}

/* ═════════ Boutons ═════════ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-weight: 600; font-size: 15px; text-decoration: none;
  padding: 15px 28px; border-radius: 13px;
  transition: transform .12s, box-shadow .2s, border-color .2s;
}
.btn.primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent2) 100%);
  color: #08090c;
  box-shadow: 0 6px 20px -8px rgba(49, 212, 162, .55);
}
.btn.primary:hover { box-shadow: 0 10px 30px -8px rgba(49, 212, 162, .7); transform: translateY(-1px); }
.btn.primary:active { transform: scale(.98); }
.btn.ghost { background: rgba(26, 26, 35, .6); border: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.btn.ghost:hover { border-color: #3a3a4e; }

/* ═════════ Hero — scène 3D hors-sol ═════════ */
.stage {
  min-height: 96vh; display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: center; padding: 60px 0 30px;
}
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2.6px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 22px; display: flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); opacity: .6; }
/* H1 — écriture code, flottement discret */
.codeline {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(16px, 1.9vw, 22px); letter-spacing: -.3px; line-height: 1.4;
  display: flex; flex-direction: column; gap: 13px;
  animation: drift 9s ease-in-out infinite;
}
@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.codeline .ln { display: flex; align-items: baseline; gap: 16px; white-space: nowrap; }
.codeline .ln > i { font-style: normal; font-size: 10px; color: var(--mute); width: 16px; text-align: right; flex-shrink: 0; user-select: none; }
.codeline em { font-style: normal; font-weight: 500; }
.codeline .kw { color: var(--ink); font-weight: 600; }
.codeline .fn { color: #5fb6e8; }
.codeline .pn { color: var(--ink2); }
.codeline .num { color: var(--accent); }
.codeline .op { color: var(--accent); }
.codeline .cm { color: var(--mute); font-size: .68em; letter-spacing: 0; }
.caret {
  display: inline-block; width: 9px; height: 1.05em; margin-left: 9px;
  background: rgba(49, 212, 162, .5); border-radius: 2px;
  vertical-align: text-bottom;
}
.hero-sub { color: var(--ink2); font-size: 15.5px; max-width: 450px; margin: 18px 0 32px; }
.hero-sub b { color: var(--ink); font-weight: 600; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { font-size: 12.5px; color: var(--mute); margin-top: 16px; }
.hero-note a { color: var(--ink2); }

/* Le deck flottant */
.deckwrap { perspective: 1300px; position: relative; padding: 30px 0 64px; }
.float { animation: levitate 7.5s ease-in-out infinite; }
@keyframes levitate {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}
.deck {
  transform-style: preserve-3d;
  transform: rotateX(calc(9deg + var(--rx, 0deg))) rotateY(calc(-13deg + var(--ry, 0deg)));
  transition: transform .35s ease-out;
}
.deck .fnode {
  display: flex; align-items: center; gap: 14px;
  background: rgba(19, 19, 26, .72);
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 15px; padding: 15px 18px; margin-bottom: 16px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 30px 60px -28px rgba(0, 0, 0, .85), 0 1px 0 rgba(255,255,255,.05) inset;
}
.deck .fnode:nth-child(1) { transform: translateZ(110px) translateX(-14px); }
.deck .fnode:nth-child(2) { transform: translateZ(74px)  translateX(6px); }
.deck .fnode:nth-child(3) { transform: translateZ(38px)  translateX(26px); }
.deck .fnode:nth-child(4) { transform: translateZ(2px)   translateX(46px); margin-bottom: 0; }
.fnode .fi {
  flex: 0 0 36px; height: 36px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(49, 212, 162, .1); border: 1px solid rgba(49, 212, 162, .25); color: var(--accent);
}
.fnode .fi svg { width: 17px; height: 17px; }
.fnode b { display: block; font-size: 13.5px; font-weight: 600; line-height: 1.35; }
.fnode span { font-size: 11.5px; color: var(--ink2); line-height: 1.45; display: block; }
.fnode.core {
  background: linear-gradient(180deg, rgba(49, 212, 162, .14), rgba(49, 212, 162, .04)), rgba(19, 19, 26, .78);
  border-color: rgba(49, 212, 162, .4);
}
/* Ombre au sol — la preuve du hors-sol */
.deck-shadow {
  position: absolute; left: 8%; right: -2%; bottom: 6px; height: 46px;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, .6), transparent 68%);
  filter: blur(10px);
  animation: shadowpulse 7.5s ease-in-out infinite;
}
@keyframes shadowpulse {
  0%, 100% { transform: scaleX(1); opacity: .9; }
  50%      { transform: scaleX(.94); opacity: .65; }
}
.fmeta {
  display: flex; justify-content: space-between; gap: 10px;
  margin: 26px 4px 0; padding-top: 14px; border-top: 1px solid var(--line-soft);
}
.fmeta span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .5px; color: var(--mute); }
.fmeta b { color: var(--ink2); font-weight: 500; }

/* Bandeau chiffres clés */
.keyfigs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); margin: 20px 0 0; }
.kf { padding: 22px 26px 22px 0; }
.kf + .kf { padding-left: 26px; border-left: 1px solid var(--line-soft); }
.kf b { display: block; font-family: var(--mono); font-size: 21px; font-weight: 600; letter-spacing: -.3px; color: var(--accent); }
.kf span { font-size: 12px; color: var(--mute); }

/* ═════════ Chapitres ═════════ */
.chap { padding: 104px 0 30px; }
.chap-head { margin-bottom: 40px; }
.chap-n { font-family: var(--mono); font-size: 12px; letter-spacing: 2.5px; color: var(--accent); display: block; margin-bottom: 12px; }
.chap-head h2 { font-size: clamp(23px, 3vw, 30px); font-weight: 800; letter-spacing: -.6px; line-height: 1.2; }
.chap-head::after { content: ""; display: block; width: 44px; height: 2px; margin-top: 18px; background: linear-gradient(90deg, var(--accent), transparent); border-radius: 2px; }

.lead { font-size: 17px; color: var(--ink2); }
.lead b, .prose b { color: var(--ink); font-weight: 600; }
.prose p { color: var(--ink2); margin-bottom: 18px; font-size: 15.5px; }
.prose p:last-child { margin-bottom: 0; }

.pull {
  margin: 36px 0; padding: 22px 26px;
  border-left: 2px solid var(--accent); border-radius: 0 15px 15px 0;
  background: linear-gradient(90deg, rgba(49, 212, 162, .06), transparent 70%);
  font-size: clamp(17px, 2.1vw, 20px); font-weight: 600; line-height: 1.5; letter-spacing: -.2px;
}
.pull small { display: block; font-family: var(--mono); font-size: 10.5px; font-weight: 400; letter-spacing: 1.5px; text-transform: uppercase; color: var(--mute); margin-top: 12px; }

/* Cartes (héritées Mini App) */
.card {
  position: relative;
  background: radial-gradient(120% 120% at 50% -10%, rgba(255,255,255,.04) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px -12px rgba(0,0,0,.6);
}
.hairline::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  border-radius: 18px 18px 0 0;
  background: linear-gradient(90deg, transparent, rgba(49,212,162,.35), transparent);
}

/* Étapes */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { padding: 26px 24px; }
.step-n {
  font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 9px;
  background: rgba(49,212,162,.1); border: 1px solid rgba(49,212,162,.25);
  margin-bottom: 16px;
}
.step h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 7px; }
.step p { font-size: 14px; color: var(--ink2); }

/* Stratégies */
.strats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.strat { padding: 28px 26px; transition: transform .25s; overflow: hidden; }
.strat:hover { transform: translateY(-4px); }
.strat.safe { --sc: var(--safe); }
.strat.med  { --sc: var(--med); }
.strat.dyn  { --sc: var(--dyn); }
.strat::after {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px; border-radius: 18px 18px 0 0;
  background: linear-gradient(90deg, transparent, var(--sc), transparent); opacity: .55;
}
.strat-name { font-family: var(--mono); font-size: 11.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--sc); margin-bottom: 16px; }
.strat-rate { font-family: var(--mono); font-size: 28px; font-weight: 600; letter-spacing: -.5px; line-height: 1.1; }
.strat-per { font-size: 12.5px; color: var(--mute); margin: 4px 0 18px; }
.strat > p { font-size: 14px; color: var(--ink2); margin-bottom: 18px; min-height: 66px; }
.strat > p b { color: var(--ink); }
.strat ul { list-style: none; }
.strat li {
  font-size: 13px; color: var(--ink2); padding: 9px 0; border-top: 1px solid var(--line-soft);
  display: flex; justify-content: space-between; gap: 12px;
}
.strat li b { color: var(--ink); font-weight: 600; font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }

.callout { margin-top: 22px; padding: 22px 26px; border-left: 2px solid var(--accent); border-radius: 0 16px 16px 0; }
.callout b { font-weight: 600; }
.callout p { font-size: 14px; color: var(--ink2); }

/* Horloge des ticks — heure UTC réelle, rien de simulé */
.clockrow { display: grid; grid-template-columns: 290px 1fr; gap: 52px; align-items: center; margin: 44px 0 10px; }
.dial { text-align: center; }
.dial svg { width: 100%; max-width: 250px; display: block; margin: 0 auto 14px; }
.dial-read b { display: block; font-family: var(--mono); font-size: 21px; font-weight: 600; letter-spacing: .5px; }
.dial-read span { font-family: var(--mono); font-size: 9.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--mute); }
.nrow { display: flex; align-items: baseline; gap: 18px; padding: 15px 4px; border-top: 1px solid var(--line-soft); font-family: var(--mono); }
.nrow:nth-of-type(3) { border-bottom: 1px solid var(--line-soft); }
.nrow b { font-size: 17px; font-weight: 600; width: 68px; color: var(--ink2); }
.nrow span { font-size: 10.5px; letter-spacing: 1px; text-transform: uppercase; color: var(--mute); flex: 1; }
.nrow .cd { font-style: normal; font-size: 12.5px; color: var(--mute); }
.nrow.up b, .nrow.up .cd { color: var(--accent); }
.nrow.up span { color: var(--ink2); }
.nexts-cap { font-size: 13px; color: var(--mute); margin-top: 18px; max-width: 480px; }

.mech { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; }
.mech-c { padding: 24px; }
.mech-c h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; display: flex; gap: 10px; align-items: center; }
.mech-c h3 svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.mech-c p { font-size: 13.5px; color: var(--ink2); }

/* Majordome */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.chatcard { padding: 24px; }
.msg { max-width: 88%; padding: 12px 15px; border-radius: 14px; font-size: 13.5px; margin-bottom: 12px; line-height: 1.5; }
.msg.user { background: rgba(34, 158, 217, .12); border: 1px solid rgba(34, 158, 217, .25); margin-left: auto; border-bottom-right-radius: 4px; }
.msg.beta { background: var(--elev); border: 1px solid var(--line); border-bottom-left-radius: 4px; color: var(--ink2); }
.msg.beta b { color: var(--ink); }
.msg:last-child { margin-bottom: 0; }
.chatcard .who { font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--mute); margin-bottom: 5px; }
.limits { list-style: none; margin-top: 24px; }
.limits li { padding: 11px 0 11px 30px; position: relative; color: var(--ink2); font-size: 14.5px; border-top: 1px solid var(--line-soft); }
.limits li:first-child { border-top: 0; }
.limits li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); font-size: 13px; }
.limits li b { color: var(--ink); font-weight: 600; }

/* Sécurité */
.sec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sec-c { padding: 26px; }
.sec-c h3 { font-size: 15.5px; font-weight: 600; margin-bottom: 9px; }
.sec-c p { font-size: 14px; color: var(--ink2); }

/* FAQ */
.faq details { border-top: 1px solid var(--line-soft); }
.faq details:last-child { border-bottom: 1px solid var(--line-soft); }
.faq summary {
  cursor: pointer; list-style: none; padding: 20px 40px 20px 4px; font-weight: 600; font-size: 15.5px;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 19px; color: var(--accent); transition: transform .25s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 4px 22px; color: var(--ink2); font-size: 14.5px; max-width: 640px; }

/* CTA final */
.final { text-align: center; padding: 130px 0 110px; }
.final h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; letter-spacing: -.7px; max-width: 620px; margin: 0 auto 16px; line-height: 1.25; }
.final h2 b { color: var(--accent); }
.final p { color: var(--ink2); margin-bottom: 32px; font-size: 15.5px; }
.final .hero-cta { justify-content: center; }

/* Footer + CGU */
footer { border-top: 1px solid var(--line-soft); padding: 52px 0 40px; }
.foot-top { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: baseline; margin-bottom: 42px; }
.foot-mark { font-family: var(--mono); font-size: 17px; font-weight: 600; color: var(--accent); text-decoration: none; }
.foot-links { display: flex; gap: 20px; flex-wrap: wrap; }
.foot-links a { font-size: 13px; color: var(--mute); text-decoration: none; }
.foot-links a:hover { color: var(--ink2); }

.legal { border-top: 1px solid var(--line-soft); padding-top: 32px; }
.legal-title { font-family: var(--mono); font-size: 10.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--mute); margin-bottom: 16px; }
.legal details { border: 1px solid var(--line-soft); border-radius: 11px; margin-bottom: 8px; }
.legal summary {
  cursor: pointer; list-style: none; padding: 13px 40px 13px 16px; font-size: 12.5px; font-weight: 600; color: var(--ink2);
  position: relative;
}
.legal summary::-webkit-details-marker { display: none; }
.legal summary::after { content: "+"; position: absolute; right: 16px; top: 12px; color: var(--mute); font-family: var(--mono); }
.legal details[open] summary::after { content: "–"; }
.legal details div { padding: 2px 16px 16px; }
.legal p { font-size: 12px; line-height: 1.7; color: var(--mute); margin-bottom: 10px; }
.legal p:last-child { margin-bottom: 0; }
.copy { font-size: 11.5px; color: var(--mute); margin-top: 28px; }

/* ═════════ Console β — déployée depuis le monogramme ═════════ */
.console {
  position: fixed; z-index: 130; left: 96px; top: 22px; width: 296px;
  background: rgba(13, 13, 19, .93);
  border: 1px solid var(--line); border-radius: 18px; padding: 18px;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .9), 0 1px 0 rgba(255,255,255,.05) inset;
  opacity: 0; visibility: hidden; transform: translateX(-10px) scale(.97);
  transform-origin: 0 24px;
  transition: opacity .22s, transform .22s, visibility 0s .22s;
}
.console.open { opacity: 1; visibility: visible; transform: none; transition: opacity .22s, transform .22s; }
.console::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px; border-radius: 18px 18px 0 0;
  background: linear-gradient(90deg, transparent, rgba(49,212,162,.4), transparent);
}
.con-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.con-head span { font-family: var(--mono); font-size: 10px; letter-spacing: 2.4px; text-transform: uppercase; color: var(--accent); }
.con-x {
  width: 26px; height: 26px; border-radius: 8px; border: 1px solid var(--line);
  background: transparent; color: var(--mute); font-size: 15px; line-height: 1; cursor: pointer;
}
.con-x:hover { color: var(--ink); border-color: #3a3a4e; }
.con-clock { text-align: center; padding: 14px 0 16px; border-bottom: 1px solid var(--line-soft); margin-bottom: 4px; }
.con-clock b { display: block; font-family: var(--mono); font-size: 27px; font-weight: 600; letter-spacing: 1px; }
.con-clock span { font-family: var(--mono); font-size: 9px; letter-spacing: 2px; text-transform: uppercase; color: var(--mute); }
.con-next { display: flex; align-items: baseline; gap: 10px; padding: 12px 2px; border-bottom: 1px solid var(--line-soft); font-family: var(--mono); }
.con-next span { font-size: 9.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--mute); flex: 1; }
.con-next b { font-size: 13px; font-weight: 600; color: var(--accent); }
.con-next i { font-style: normal; font-size: 12px; color: var(--ink2); }
.con-profiles { padding: 6px 0; border-bottom: 1px solid var(--line-soft); }
.con-profiles a {
  display: flex; align-items: baseline; gap: 10px; text-decoration: none;
  padding: 9px 2px; font-size: 12.5px; border-radius: 8px;
}
.con-profiles a:hover { background: rgba(255,255,255,.03); }
.con-profiles .tk { width: 7px; height: 7px; border-radius: 2px; align-self: center; flex-shrink: 0; }
.tk.s { background: var(--safe); } .tk.m { background: var(--med); } .tk.d { background: var(--dyn); }
.con-profiles b { font-weight: 600; width: 68px; }
.con-profiles span { font-family: var(--mono); font-size: 11.5px; color: var(--ink2); flex: 1; }
.con-profiles em { font-style: normal; font-family: var(--mono); font-size: 10px; color: var(--mute); }
.con-links { display: flex; gap: 6px; padding: 14px 0 4px; }
.con-links a {
  flex: 1; text-align: center; text-decoration: none; font-size: 11.5px; font-weight: 500;
  color: var(--ink2); border: 1px solid var(--line); border-radius: 9px; padding: 8px 4px;
}
.con-links a:hover { color: var(--ink); border-color: #3a3a4e; }
.con-links a:first-child { color: #08090c; font-weight: 600; border: 0; background: linear-gradient(180deg, var(--accent), var(--accent2)); }
.con-top { display: block; text-align: center; font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--mute); text-decoration: none; padding-top: 12px; }
.con-top:hover { color: var(--ink2); }

/* ═════════ Papier — l'objet imprimé au milieu du sombre ═════════ */
.chap-n.solo { margin-bottom: 26px; }
.paper, .paper-doc {
  position: relative;
  background: radial-gradient(140% 80% at 50% 0%, rgba(255, 255, 255, .55), transparent 55%), #efebdd;
  color: #1b1a14;
  border-radius: 3px;
  box-shadow: 0 46px 90px -42px rgba(0, 0, 0, .95);
  font-family: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
}
.paper { padding: 52px 56px 46px; }
.paper::after, .paper-doc::after {
  content: ""; position: absolute; top: 0; right: 0; width: 32px; height: 32px;
  background: linear-gradient(225deg, var(--bg) 0 50%, #dcd5c0 50%, #cfc7ae);
  border-bottom-left-radius: 4px;
  box-shadow: -3px 3px 7px rgba(0, 0, 0, .18);
}
.paper-head {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 16px;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 2px; text-transform: uppercase;
  color: #8b8571; border-bottom: 1px solid #d9d2bc; padding-bottom: 14px; margin-bottom: 34px;
}
.paper h2 { font-family: inherit; font-size: clamp(26px, 3vw, 33px); font-weight: 600; letter-spacing: -.2px; line-height: 1.15; color: #14130e; margin-bottom: 24px; }
.paper p { font-size: 15.5px; line-height: 1.78; color: #34322a; margin-bottom: 17px; }
.paper p b { color: #14130e; }
.paper blockquote {
  margin: 28px 0; padding: 4px 0 4px 22px; border-left: 2px solid #14130e;
  font-size: 19px; font-style: italic; line-height: 1.5; color: #14130e;
}
.paper blockquote small {
  display: block; font-style: normal; font-family: var(--mono); font-size: 9px;
  letter-spacing: 1.8px; text-transform: uppercase; color: #8b8571; margin-top: 10px;
}
.paper-sign { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; margin-top: 38px; padding-top: 20px; border-top: 1px solid #d9d2bc; }
.sig { font-style: italic; font-size: 29px; color: #14130e; }
.sig-sub { font-family: var(--mono); font-size: 9.5px; letter-spacing: 1.6px; text-transform: uppercase; color: #8b8571; }

/* CGU sur papier */
.paper-doc { padding: 40px 46px 34px; border-top: 0; }
.paper-doc details { border: 0; border-top: 1px solid #d9d2bc; border-radius: 0; margin: 0; }
.paper-doc summary { color: #1b1a14; font-family: inherit; font-size: 14px; font-weight: 600; padding: 14px 34px 14px 0; }
.paper-doc summary::after { color: #8b8571; right: 4px; top: 13px; }
.paper-doc details div { padding: 0 0 18px; }
.paper-doc p { font-size: 12.5px; line-height: 1.75; color: #454237; }
.paper-doc a { color: #14130e; }
.paper-doc .copy { color: #8b8571; font-family: var(--mono); font-size: 9.5px; letter-spacing: .4px; line-height: 1.7; border-top: 1px solid #d9d2bc; padding-top: 16px; margin-top: 20px; }

/* ═════════ Fig. 01 — instrument d'arbitrage manipulable ═════════ */
.arb { margin-top: 18px; padding: 28px 30px 26px; }
.arb-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 24px; }
.arb-fig { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); }
.arb-note { font-family: var(--mono); font-size: 9.5px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); }
.arb-track { position: relative; display: flex; height: 58px; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); background: var(--elev); }
.arb-seg { display: flex; flex-direction: column; justify-content: center; padding: 0 14px; min-width: 0; overflow: hidden; }
.arb-seg.yes { background: linear-gradient(180deg, rgba(49, 212, 162, .3), rgba(49, 212, 162, .13)); width: 50%; flex-shrink: 0; }
.arb-seg.no { background: linear-gradient(180deg, rgba(34, 158, 217, .28), rgba(34, 158, 217, .12)); flex: 1; align-items: flex-end; text-align: right; }
.arb-seg span { font-family: var(--mono); font-size: 9px; letter-spacing: 1.8px; color: var(--ink2); }
.arb-seg b { font-family: var(--mono); font-size: 15px; font-weight: 600; white-space: nowrap; }
.arb-zone { position: absolute; top: 0; bottom: 0; left: 97%; right: 0; pointer-events: none; background: repeating-linear-gradient(45deg, rgba(49, 212, 162, .6) 0 3px, transparent 3px 7px); }
.arb-cost-mark { position: absolute; top: -1px; bottom: -1px; left: 97%; width: 0; border-left: 1px dashed rgba(255, 255, 255, .6); pointer-events: none; }
.arb-scale { display: flex; justify-content: space-between; align-items: baseline; margin: 8px 2px 2px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .8px; color: var(--mute); }
.arb-scale .arb-cost { color: var(--accent); letter-spacing: 1px; text-transform: uppercase; font-size: 9px; }
.arb input[type="range"] { -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 28px; margin: 12px 0 2px; background: transparent; cursor: ew-resize; outline: none; }
.arb input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgba(49, 212, 162, .35); }
.arb input[type="range"]::-webkit-slider-runnable-track { height: 2px; border-radius: 2px; background: var(--line); }
.arb input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; margin-top: -10px; border-radius: 7px;
  background: var(--elev); border: 1px solid var(--accent);
  box-shadow: 0 0 14px rgba(49, 212, 162, .35), 0 1px 0 rgba(255,255,255,.06) inset; cursor: grab;
}
.arb input[type="range"]::-moz-range-track { height: 2px; border-radius: 2px; background: var(--line); }
.arb input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 7px; background: var(--elev); border: 1px solid var(--accent); cursor: grab; }
.arb-ends { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 9px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--mute); }
.arb-read { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; margin-top: 20px; }
.arb-read > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; border-top: 1px solid var(--line-soft); padding: 10px 0; font-size: 12.5px; color: var(--ink2); }
.arb-read b { font-family: var(--mono); font-size: 13px; font-weight: 600; white-space: nowrap; }
.arb-read b.pos { color: var(--accent); }
.arb-read b.neg { color: #ff6a6a; }
.arb-read .lock b { color: var(--ink); }
.arb-read .lock .ok { color: var(--accent); }
.arb-cap { margin-top: 20px; font-size: 13.5px; color: var(--ink2); max-width: 660px; }

/* Segmented control */
.seg { display: inline-flex; gap: 3px; background: var(--elev); border: 1px solid var(--line); border-radius: 11px; padding: 3px; }
.seg button {
  border: 1px solid transparent; background: transparent; color: var(--mute); cursor: pointer;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .6px;
  padding: 7px 13px; border-radius: 8px; transition: color .2s, background .2s;
}
.seg button:hover { color: var(--ink2); }
.seg button.on { background: var(--card); border-color: var(--line); color: var(--ink); box-shadow: 0 1px 0 rgba(255,255,255,.05) inset; }

/* Fig. 02 — calculateur de part composée */
.calc { margin-top: 34px; }
.calc-ctl { display: grid; grid-template-columns: 1fr auto; gap: 20px 36px; align-items: end; margin-bottom: 6px; }
.calc-lbl { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 2px; }
.calc-lbl span { font-family: var(--mono); font-size: 9.5px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--mute); }
.calc-lbl b { font-family: var(--mono); font-size: 17px; font-weight: 600; color: var(--accent); }
.calc-side { display: flex; gap: 10px; flex-wrap: wrap; padding-bottom: 6px; }
.calc-min { margin-top: 14px; font-size: 12.5px; color: var(--med); font-family: var(--mono); }
.calc-min b { font-weight: 600; }
.calc input[type="range"] { margin: 6px 0 0; }

@media (prefers-reduced-motion: reduce) {
  .float, .deck-shadow, .codeline { animation: none; }
  .deck { transition: none; }
  html { scroll-behavior: auto; }
}

/* ═════════ Responsive ═════════ */
@media (max-width: 980px) {
  main { margin-left: 0; }
  .rail { display: none; }
  .mtop { display: flex; }
  .stage { grid-template-columns: 1fr; gap: 22px; min-height: 0; padding: 108px 0 30px; }
  .deckwrap { padding: 16px 0 52px; max-width: 460px; }
  .deck { transform: rotateX(6deg) rotateY(-8deg); }
  .deck .fnode:nth-child(1) { transform: translateZ(70px) translateX(-6px); }
  .deck .fnode:nth-child(2) { transform: translateZ(46px) translateX(4px); }
  .deck .fnode:nth-child(3) { transform: translateZ(22px) translateX(14px); }
  .deck .fnode:nth-child(4) { transform: translateZ(0)    translateX(24px); }
  .steps, .strats, .mech { grid-template-columns: 1fr; }
  .split, .sec-grid { grid-template-columns: 1fr; gap: 28px; }
  .keyfigs { grid-template-columns: 1fr 1fr; }
  .kf { padding: 18px 20px 18px 0; }
  .kf:nth-child(3) { border-left: 0; padding-left: 0; }
  .kf:nth-child(even) { padding-left: 20px; }
  .kf:nth-child(n+3) { border-top: 1px solid var(--line-soft); }
  .strat > p { min-height: 0; }
}
/* ══ β.06 Parrainage — barème ══ */
.aff-doc { padding: 28px 28px 24px; }
.aff-cap { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--ink2); padding-bottom: 13px; border-bottom: 1px solid var(--line-soft); }
.aff-row { display: flex; align-items: baseline; gap: 12px; padding-top: 18px; }
.aff-row i { flex: 1; border-bottom: 1px dotted #3a3a46; transform: translateY(-4px); }
.aff-row b { font-family: var(--mono); font-size: 23px; font-weight: 700; color: var(--accent); }
.aff-row b.mut { color: var(--mute); }
.aff-k { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; font-weight: 600; }
.aff-k.med { color: var(--med); }
.aff-k.dyn { color: var(--dyn); }
.aff-k.mut { color: var(--mute); }
.aff-sub { font-family: var(--mono); font-size: 10px; letter-spacing: .06em; color: var(--mute); margin-top: 5px; }

@media (max-width: 980px) {
  .clockrow { grid-template-columns: 1fr; gap: 28px; justify-items: center; }
  .nexts { width: 100%; }
  .console { left: 14px; right: 14px; top: 68px; width: auto; transform-origin: 24px 0; }
  .arb-read { grid-template-columns: 1fr; gap: 0; }
  .calc-ctl { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  .chap { padding: 76px 0 20px; }
  .codeline { font-size: 15px; gap: 11px; }
  .codeline .ln { gap: 10px; }
  .seg button { padding: 6px 9px; font-size: 9.5px; }
  .kf b { font-size: 17px; }
  .paper { padding: 34px 24px 28px; }
  .paper-doc { padding: 28px 20px 24px; }
  .paper-head { margin-bottom: 24px; }
  .arb { padding: 20px 16px 18px; }
  .arb-ends span { letter-spacing: .6px; }
  .final { padding: 90px 0 76px; }
  .btn { width: 100%; padding: 14px 22px; font-size: 14.5px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .fmeta { flex-wrap: wrap; gap: 6px 14px; }
}