/* ============================================================
   V-TRAX — Manuel d'utilisation (refonte lisible & aérée)
   Deux thèmes : sombre (défaut V-TRAX) + clair, basculables.
   ============================================================ */

/* ---------- TOKENS : thème CLAIR (unique) ---------- */
:root{
  --bg:#EFEDE7;
  --bg-1:#FBFAF7;
  --bg-2:#F1EFE9;
  --bg-card:#FFFFFF;
  --line:#DBD6CC;
  --line-2:#E7E2D9;
  --ink:#1B1813;
  --ink-dim:#5C564D;
  --ink-mute:#928B7F;
  --ink-faint:#C2BBAF;

  --red:#D11008;
  --red-bright:#B70D06;
  --red-soft:rgba(209,16,8,0.07);
  --red-line:rgba(209,16,8,0.22);

  --green:#2E8B49;
  --green-soft:rgba(46,139,73,0.10);

  --danger:#C00F07;
  --danger-bg:#FBEAE8;
  --danger-mark:#D11008;
  --warn:#8A6310;
  --warn-bg:#F6EEDB;
  --warn-mark:#B07F1E;
  --info:#1C609F;
  --info-bg:#E8F0F9;
  --info-mark:#2872B5;

  --led-red:#D11008;
  --led-blue:#2872d6;
  --led-green:#2E8B49;

  --shadow:0 1px 2px rgba(40,33,20,0.05), 0 18px 44px -30px rgba(40,33,20,0.30);
  --radius:10px;
  --radius-sm:6px;

  --page-grid:rgba(40,33,20,0.04);
  --hero-glow:rgba(209,16,8,0.07);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter Tight',system-ui,sans-serif;
  font-size:16px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"ss01","cv11","tnum";
  min-height:100vh;
  transition:background .35s ease, color .35s ease;
  position:relative;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(to right, var(--page-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--page-grid) 1px, transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%, black 20%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 60% at 50% 0%, black 20%, transparent 75%);
}

::selection{background:var(--red);color:#fff}
a{color:var(--red);text-decoration:none;border-bottom:1px solid var(--red-line);transition:.15s}
a:hover{color:var(--red-bright);border-bottom-color:var(--red)}

/* ============ PROGRESS BAR ============ */
.progress{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--red),var(--red-bright));
  z-index:200;transition:width .08s linear;
  box-shadow:0 0 10px var(--red-line);
}

/* ============ TOP HEADER ============ */
.appbar{
  position:sticky;top:0;z-index:120;
  display:flex;align-items:center;gap:18px;
  padding:13px 26px;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;font-size:16px;letter-spacing:-.01em;color:var(--ink);border:none}
.brand .mark{width:11px;height:11px;background:var(--red);box-shadow:0 0 12px var(--red-line)}
.brand .sub{
  font-family:'JetBrains Mono',monospace;font-weight:500;font-size:10.5px;
  letter-spacing:.24em;text-transform:uppercase;color:var(--ink-mute);
  padding-left:13px;margin-left:2px;border-left:1px solid var(--line);
}
.appbar .spacer{flex:1}
.appbar .tool{
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:1px solid var(--line);
  background:transparent;color:var(--ink-dim);
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;padding:9px 13px;border-radius:var(--radius-sm);
  transition:.15s;
}
.appbar .tool:hover{color:var(--red);border-color:var(--red);background:var(--red-soft)}
.appbar .tool svg{width:15px;height:15px;flex:none}
.appbar .menu-btn{display:none}

/* ============ APP LAYOUT ============ */
.layout{
  position:relative;z-index:1;
  max-width:1280px;margin:0 auto;padding:0 26px;
  display:grid;grid-template-columns:264px 1fr;gap:46px;
  align-items:start;
}

/* ============ SIDEBAR / TOC ============ */
.toc{
  position:sticky;top:78px;align-self:start;
  max-height:calc(100vh - 96px);overflow-y:auto;
  padding:26px 6px 40px 0;
  scrollbar-width:thin;scrollbar-color:var(--line) transparent;
}
.toc::-webkit-scrollbar{width:6px}
.toc::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.toc-h{
  font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;
  letter-spacing:.26em;text-transform:uppercase;color:var(--ink-mute);
  margin:0 0 14px 14px;
}
.toc a{
  display:flex;align-items:baseline;gap:11px;
  padding:7px 12px 7px 14px;border:none;border-left:2px solid transparent;
  color:var(--ink-mute);font-size:13.5px;font-weight:500;line-height:1.4;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:.14s;
}
.toc a .n{
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;
  color:var(--ink-faint);flex:none;min-width:20px;
}
.toc a:hover{color:var(--ink);background:var(--bg-1)}
.toc a:hover .n{color:var(--red)}
.toc a.active{
  color:var(--ink);background:var(--red-soft);
  border-left-color:var(--red);font-weight:600;
}
.toc a.active .n{color:var(--red)}

/* ============ MAIN COLUMN ============ */
.main{min-width:0;padding:30px 0 90px;max-width:840px}

/* ---------- HERO ---------- */
.hero{
  position:relative;overflow:hidden;
  border:1px solid var(--line-2);border-radius:var(--radius);
  background:
    radial-gradient(900px 320px at 18% -30%, var(--hero-glow), transparent 70%),
    var(--bg-card);
  padding:42px 44px;margin-bottom:18px;box-shadow:var(--shadow);
}
.hero .eyebrow{
  display:flex;align-items:center;gap:13px;flex-wrap:wrap;
  font-family:'JetBrains Mono',monospace;font-size:11.5px;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:20px;
}
.hero .eyebrow .bar{width:30px;height:2px;background:var(--red)}
.hero .eyebrow b{color:var(--red);font-weight:600}
.hero h1{
  font-weight:800;font-size:clamp(30px,4.4vw,46px);line-height:1.04;
  letter-spacing:-.03em;color:var(--ink);text-wrap:balance;
}
.hero h1 .accent{color:var(--red)}
.hero .lead{
  margin-top:18px;max-width:680px;font-size:17px;font-weight:400;
  line-height:1.6;color:var(--ink-dim);text-wrap:pretty;
}
.hero .version{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding-top:22px;border-top:1px solid var(--line-2);
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-dim);line-height:1.6;
}
.hero .version .tag{
  background:var(--red);color:#fff;font-weight:700;font-size:10px;
  letter-spacing:.18em;text-transform:uppercase;padding:5px 10px;border-radius:var(--radius-sm);flex:none;
}
.hero .version a{font-weight:600}

/* ---------- SECTION CARD ---------- */
.section{
  border:1px solid var(--line-2);border-radius:var(--radius);
  background:var(--bg-card);box-shadow:var(--shadow);
  padding:34px 44px 38px;margin-top:18px;scroll-margin-top:84px;
}
.section > h2{
  display:flex;align-items:center;gap:16px;
  font-weight:800;font-size:27px;letter-spacing:-.025em;color:var(--ink);
  margin-bottom:6px;text-wrap:balance;
}
.section > h2 .num{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 10px;
  background:var(--red);color:#fff;border-radius:var(--radius-sm);
  font-family:'JetBrains Mono',monospace;font-size:16px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 6px 18px -8px var(--red);
}
.section .kicker{
  font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-mute);margin:0 0 22px 58px;
}
h3{
  font-weight:700;font-size:18.5px;letter-spacing:-.01em;color:var(--ink);
  margin:30px 0 10px;display:flex;align-items:baseline;gap:10px;
}
h3 .h3n{
  font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:600;
  color:var(--red);flex:none;
}
.section p{font-size:15.5px;color:var(--ink-dim);line-height:1.74;margin-bottom:13px;text-wrap:pretty}
.section p strong, .section li strong{color:var(--ink);font-weight:600}
.section p em, .section li em{color:var(--ink);font-style:italic}
.section code{
  font-family:'JetBrains Mono',monospace;font-size:13px;
  color:var(--red);padding:1px 6px;background:var(--red-soft);
  border:1px solid var(--red-line);border-radius:4px;
}

/* lists */
.section ul{list-style:none;margin:12px 0 18px;padding:0}
.section ul li{
  position:relative;padding:6px 0 6px 24px;
  font-size:15.5px;color:var(--ink-dim);line-height:1.65;
}
.section ul li::before{
  content:"";position:absolute;left:2px;top:15px;
  width:9px;height:9px;border-radius:2px;background:var(--red);transform:rotate(45deg);
}
.section ul li ul{margin:6px 0 4px}
.section ul li ul li::before{width:7px;height:7px;background:var(--ink-mute);border-radius:50%;transform:none;top:16px}

/* ============ CALLOUTS ============ */
.callout{
  display:flex;gap:15px;align-items:flex-start;
  margin:18px 0;padding:16px 20px;border-radius:var(--radius-sm);
  line-height:1.6;font-size:15px;color:var(--ink);
  border:1px solid transparent;border-left-width:4px;
  break-inside:avoid;
}
.callout .ic{
  flex:none;width:30px;height:30px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;color:#fff;margin-top:1px;
}
.callout .ct{flex:1}
.callout .lbl{
  display:block;font-family:'JetBrains Mono',monospace;font-size:10.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;margin-bottom:5px;
}
.callout .body, .callout .ct{color:var(--ink-dim);font-size:15px}
.callout b{color:var(--ink);font-weight:600}

.callout.danger{background:var(--danger-bg);border-color:var(--danger-mark)}
.callout.danger .ic{background:var(--danger-mark)}
.callout.danger .lbl{color:var(--danger)}
.callout.warning{background:var(--warn-bg);border-color:var(--warn-mark)}
.callout.warning .ic{background:var(--warn-mark)}
.callout.warning .lbl{color:var(--warn)}
.callout.info{background:var(--info-bg);border-color:var(--info-mark)}
.callout.info .ic{background:var(--info-mark)}
.callout.info .lbl{color:var(--info)}

/* ============ META GRID (identification) ============ */
.meta-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;
  margin:20px 0;
}
.meta-grid .item{
  border:1px solid var(--line-2);background:var(--bg-1);
  padding:13px 16px;border-radius:var(--radius-sm);
}
.meta-grid .k{
  font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:7px;
}
.meta-grid .v{font-size:14.5px;color:var(--ink);font-weight:500;line-height:1.5}
.meta-grid .v a{font-weight:500}

/* ============ SPEC TABLE ============ */
.spec{
  width:100%;border-collapse:separate;border-spacing:0;margin:16px 0 22px;
  border:1px solid var(--line-2);border-radius:var(--radius-sm);overflow:hidden;
  font-size:15px;line-height:1.6;
}
.spec th,.spec td{text-align:left;padding:14px 16px;vertical-align:top;border-bottom:1px solid var(--line-2)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}
.spec th{
  font-weight:600;color:var(--ink);background:var(--bg-1);width:38%;
}
.spec td{color:var(--ink-dim)}
.spec td strong, .spec th strong{color:var(--ink)}

/* ============ STEP LIST (générique) ============ */
.steps{counter-reset:st;list-style:none;padding:0;margin:18px 0}
.steps > li{
  counter-increment:st;position:relative;padding:3px 0 16px 50px;line-height:1.65;
  font-size:15.5px;color:var(--ink-dim);
}
.steps > li::before{
  content:counter(st,decimal-leading-zero);position:absolute;left:0;top:0;
  width:34px;height:34px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-1);border:1px solid var(--red-line);color:var(--red);border-radius:8px;
  font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:700;
}
.steps > li strong{color:var(--ink)}

/* ============ PLACEHOLDER ============ */
.ph{
  display:inline-block;background:var(--warn-bg);
  color:var(--warn);font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:600;
  padding:2px 9px;border:1px dashed var(--warn-mark);border-radius:4px;
  letter-spacing:.03em;
}

/* ============ LED KEY ============ */
.led{display:inline-block;width:11px;height:11px;border-radius:50%;vertical-align:middle;margin-right:7px;flex:none}
.led.red{background:var(--led-red);box-shadow:0 0 7px var(--led-red)}
.led.blue{background:var(--led-blue);box-shadow:0 0 7px var(--led-blue)}
.led.green{background:var(--led-green);box-shadow:0 0 7px var(--led-green)}
.led.off{background:transparent;border:1.5px solid var(--ink-mute);box-shadow:none}

/* ============ FLOW DIAGRAM ============ */
.flow{
  margin:20px 0;padding:26px 24px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);background:var(--bg-1);
}
.flow .flow-title{
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--red);margin-bottom:20px;
  display:flex;align-items:center;gap:9px;
}
.flow .flow-title .dot{width:8px;height:8px;background:var(--red);border-radius:50%}
.flow-chain{display:flex;align-items:stretch;flex-wrap:wrap;gap:0}
.flow-node{
  flex:1 1 0;min-width:130px;
  border:1px solid var(--line);background:var(--bg-card);border-radius:8px;
  padding:13px 14px;display:flex;flex-direction:column;gap:4px;justify-content:center;
}
.flow-node .fn-k{
  font-family:'JetBrains Mono',monospace;font-size:9px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--ink-mute);
}
.flow-node .fn-v{font-size:14px;font-weight:600;color:var(--ink);line-height:1.35}
.flow-node.accent{border-color:var(--red);background:var(--red-soft)}
.flow-node.accent .fn-v{color:var(--red)}
.flow-arrow{
  flex:none;display:flex;align-items:center;justify-content:center;
  color:var(--ink-faint);padding:0 4px;font-size:20px;align-self:center;
}
.flow-arrow .lnk{
  font-family:'JetBrains Mono',monospace;font-size:8.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-mute);text-align:center;line-height:1.3;
  display:flex;flex-direction:column;align-items:center;gap:3px;
}
.flow-arrow svg{width:26px;height:14px;stroke:var(--red);fill:none}
@media(max-width:620px){
  .flow-chain{flex-direction:column}
  .flow-node{flex:none}
  .flow-arrow{transform:rotate(90deg);padding:6px 0}
}

/* ============ BOX SCHEMA (SVG) ============ */
.schema{
  margin:22px 0;padding:28px 26px 22px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);background:var(--bg-1);text-align:center;
}
.schema svg{max-width:100%;height:auto}
.schema .cap{
  font-size:13px;color:var(--ink-mute);font-style:italic;margin-top:14px;
}
.sc-fill{fill:var(--bg-card)}
.sc-stroke{stroke:var(--line);fill:none;stroke-width:1.5}
.sc-board{fill:var(--bg-2);stroke:var(--line);stroke-width:1.5}
.sc-port{fill:var(--bg-card);stroke:var(--ink-mute);stroke-width:1.4}
.sc-port-estop{fill:var(--green-soft);stroke:var(--green);stroke-width:1.8}
.sc-leader{stroke:var(--ink-faint);stroke-width:1;stroke-dasharray:3 3;fill:none}
.sc-led-red{fill:var(--led-red)}
.sc-led-blue{fill:var(--led-blue)}
.sc-led-green{fill:var(--led-green)}
.sc-label{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;fill:var(--ink);letter-spacing:.02em}
.sc-sub{font-family:'Inter Tight',sans-serif;font-size:10.5px;fill:var(--ink-mute)}
.sc-tag{font-family:'JetBrains Mono',monospace;font-size:9px;font-weight:600;fill:var(--ink-dim);letter-spacing:.1em}
.sc-port-txt{font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:600;fill:var(--ink);letter-spacing:.04em}

/* ============ QUICK START (pièce maîtresse) ============ */
.qs-banner{
  margin:6px 0 24px;padding:24px 26px;border-radius:var(--radius);
  border:1px solid var(--red-line);
  background:
    radial-gradient(600px 200px at 0% 0%, var(--red-soft), transparent 70%),
    var(--bg-1);
}
.qs-banner .qs-tag{
  display:inline-block;background:var(--red);color:#fff;
  font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;padding:5px 11px;border-radius:var(--radius-sm);margin-bottom:14px;
}
.qs-banner p{font-size:15.5px;color:var(--ink-dim);margin-bottom:9px}
.qs-banner p strong{color:var(--ink)}
.qs-banner p:last-child{margin-bottom:0}

/* progress rail A→F */
.qs-rail{
  display:flex;gap:8px;margin:22px 0 8px;flex-wrap:wrap;
}
.qs-rail a{
  flex:1 1 0;min-width:96px;border:none;
  display:flex;flex-direction:column;gap:6px;align-items:flex-start;
  padding:12px 13px;border-radius:var(--radius-sm);
  background:var(--bg-card);border:1px solid var(--line-2);transition:.15s;
}
.qs-rail a:hover{border-color:var(--red);background:var(--red-soft)}
.qs-rail .rl{
  width:26px;height:26px;border-radius:7px;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;
  font-family:'JetBrains Mono',monospace;
}
.qs-rail .rt{font-size:12px;font-weight:600;color:var(--ink);line-height:1.3}
.qs-rail .re{font-family:'JetBrains Mono',monospace;font-size:9.5px;color:var(--ink-mute);letter-spacing:.08em}

/* phase header */
.qs-phase{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  margin:30px 0 0;padding:16px 20px;border-radius:var(--radius-sm) var(--radius-sm) 0 0;
  background:var(--bg-1);border:1px solid var(--line-2);border-left:4px solid var(--red);
}
.qs-phase .letter{
  flex:none;width:44px;height:44px;border-radius:9px;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:'JetBrains Mono',monospace;font-size:21px;font-weight:800;
  box-shadow:0 8px 20px -8px var(--red);
}
.qs-phase .pt{flex:1;font-weight:700;font-size:19px;letter-spacing:-.015em;color:var(--ink)}
.qs-phase .est{
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-mute);
  letter-spacing:.12em;text-transform:uppercase;border:1px solid var(--line);
  padding:5px 10px;border-radius:20px;
}
.qs-body{
  border:1px solid var(--line-2);border-top:none;border-radius:0 0 var(--radius-sm) var(--radius-sm);
  padding:6px 22px 14px;background:var(--bg-card);
}
.qs-steps{list-style:none;counter-reset:qs;padding:0;margin:6px 0}
.qs-steps > li{
  counter-increment:qs;position:relative;padding:14px 0 14px 56px;line-height:1.6;
  font-size:15.5px;color:var(--ink-dim);border-bottom:1px dashed var(--line-2);
}
.qs-steps > li:last-child{border-bottom:none}
.qs-steps > li::before{
  content:attr(data-prefix) counter(qs);position:absolute;left:0;top:14px;
  font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:700;color:var(--red);
  width:42px;text-align:left;letter-spacing:.04em;
}
.qs-steps li strong{color:var(--ink)}
.qs-steps li .note{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-mute);font-style:italic;line-height:1.55}
.qs-miniref{margin:12px 0 0;font-size:13px;color:var(--ink-mute);font-style:italic}
.qs-miniref a{font-weight:500}

.qs-finish{
  margin:26px 0 8px;padding:22px 24px;text-align:center;border-radius:var(--radius);
  border:1px solid var(--green);background:var(--green-soft);
}
.qs-finish .ft{font-weight:700;font-size:18px;color:var(--green);margin-bottom:6px}
.qs-finish .fb{font-size:15px;color:var(--ink-dim)}
.qs-finish .fb a{color:var(--green);border-bottom-color:color-mix(in srgb,var(--green) 40%,transparent)}

/* ============ RENVOI (annexe) ============ */
.renvoi{
  margin:22px 0;padding:22px 24px;border-radius:var(--radius);
  border:1px solid var(--warn-mark);background:var(--warn-bg);
}
.renvoi .r-tag{
  display:inline-block;background:var(--warn-mark);color:#fff;
  font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;padding:5px 11px;border-radius:var(--radius-sm);margin-bottom:14px;
}
[data-theme="light"] .renvoi .r-tag{color:#fff}
.renvoi p{color:var(--ink-dim);font-size:15px}
.renvoi ul{margin:10px 0}
.renvoi a{color:var(--warn);border-bottom-color:color-mix(in srgb,var(--warn-mark) 45%,transparent)}
.renvoi .disclaim{
  margin-top:16px;padding-top:14px;border-top:1px solid color-mix(in srgb,var(--warn-mark) 30%,transparent);
  font-size:13.5px;color:var(--ink-mute);font-style:italic;line-height:1.6;
}
.renvoi .disclaim strong{color:var(--ink)}

/* ============ STAMP ============ */
.stamp{
  margin-top:30px;padding:16px 20px;border:1px dashed var(--line);border-radius:var(--radius-sm);
  text-align:center;font-family:'JetBrains Mono',monospace;font-size:11.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);
}

/* ============ FOOTER ============ */
footer{
  margin-top:36px;padding-top:30px;border-top:1px solid var(--line-2);
  font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--ink-mute);
  text-align:center;line-height:1.9;letter-spacing:.18em;text-transform:uppercase;
}
footer .bn{color:var(--ink);font-weight:700;letter-spacing:.24em}
footer .dot{color:var(--red);margin:0 10px}
footer .f-links{margin-top:14px;display:flex;justify-content:center;flex-wrap:wrap;gap:0}
footer .f-links a{color:var(--ink-dim);padding:6px 14px;border:none;letter-spacing:.18em;font-size:11px;position:relative}
footer .f-links a:hover{color:var(--red)}
footer .f-links a + a::before{content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);width:1px;height:10px;background:var(--line)}
footer .f-copy{margin-top:16px;padding-top:14px;border-top:1px solid var(--line-2);font-size:10.5px}
footer .f-copy .red{color:var(--red)}

/* ============ BACK TO TOP ============ */
.totop{
  position:fixed;right:24px;bottom:24px;z-index:130;
  width:46px;height:46px;border-radius:50%;cursor:pointer;
  border:1px solid var(--line);background:var(--bg-card);color:var(--ink-dim);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:.25s;
}
.totop.show{opacity:1;transform:none;pointer-events:auto}
.totop:hover{color:var(--red);border-color:var(--red)}
.totop svg{width:18px;height:18px}

/* ============ RESPONSIVE ============ */
@media(max-width:1080px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc{
    position:fixed;top:0;left:0;bottom:0;width:300px;max-height:none;z-index:160;
    background:var(--bg);border-right:1px solid var(--line);
    padding:80px 14px 30px;transform:translateX(-104%);transition:transform .28s ease;
    box-shadow:var(--shadow);
  }
  .toc.open{transform:none}
  .appbar .menu-btn{display:inline-flex}
  .main{padding-top:24px}
  .toc-backdrop{
    position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:150;opacity:0;
    pointer-events:none;transition:.25s;
  }
  .toc-backdrop.show{opacity:1;pointer-events:auto}
}
@media(max-width:640px){
  .layout{padding:0 14px}
  .hero{padding:30px 22px}
  .section{padding:26px 20px 30px}
  .section .kicker{margin-left:0}
  .appbar{padding:11px 14px;gap:10px}
  .appbar .tool .t-txt{display:none}
  .appbar .tool{padding:9px}
  .brand .sub{display:none}
}

/* ============ PRINT ============ */
@media print{
  @page{margin:14mm}
  html{scroll-behavior:auto}
  body{background:#fff;color:#111;font-size:11.5pt;line-height:1.5}
  body::before{display:none}
  .progress,.appbar,.toc,.totop,.toc-backdrop,.qs-rail{display:none !important}
  .layout{display:block;max-width:100%;padding:0}
  .main{max-width:100%;padding:0}
  .hero,.section,.qs-banner,.flow,.schema,.callout,.renvoi,.qs-finish,.meta-grid .item,.spec{
    box-shadow:none !important;
  }
  .section{border:none;padding:0;margin:0 0 14px;page-break-inside:auto}
  .section > h2{font-size:18pt;color:#000;page-break-after:avoid}
  .section > h2 .num{background:#E10600 !important;color:#fff !important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  h3{page-break-after:avoid}
  .callout,.qs-phase,.qs-body,.steps>li,.qs-steps>li,.flow,.schema,.renvoi,.qs-finish,.spec{page-break-inside:avoid}
  .hero{border:1px solid #ccc;background:#fff}
  .hero h1{color:#000}
  a{color:#000;border:none}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

/* ============ LIGHTBOX (photos en grand) ============ */
.lightbox{
  position:fixed;inset:0;z-index:300;display:none;
  align-items:center;justify-content:center;padding:34px;
  background:rgba(20,16,10,.86);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.lightbox.open{display:flex}
.lightbox img{
  max-width:min(94vw,1100px);max-height:88vh;
  border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.15);
  box-shadow:0 24px 70px rgba(0,0,0,.55);
}
.lightbox-close{
  position:absolute;top:18px;right:20px;
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;
  border:1px solid rgba(255,255,255,.32);background:rgba(0,0,0,.4);color:#fff;
  font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;padding:10px 15px;border-radius:var(--radius-sm);
  transition:.15s;
}
.lightbox-close:hover{background:var(--red);border-color:var(--red)}
.lightbox-close svg{width:16px;height:16px}
@media print{.lightbox{display:none !important}}