/* ==========================================================================
   « Sur le fil » — styles de la page, isolés dans #sur-le-fil
   (repris de l'artefact v2.1 ; classes communes au site renommées : fw, fhero,
   fbtn, flead, fnote, fnav, fsmall ; polices hébergées sur le site)
   ========================================================================== */
@font-face{font-family:"Bricolage Grotesque";font-style:normal;font-display:swap;font-weight:200 800;src:url(fonts/bricolage-grotesque-latin-opsz-normal.woff2) format("woff2-variations")}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-display:swap;font-weight:400;src:url(fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-style:italic;font-display:swap;font-weight:400;src:url(fonts/atkinson-hyperlegible-latin-400-italic.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-display:swap;font-weight:700;src:url(fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-display:swap;font-weight:400;src:url(fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-display:swap;font-weight:500;src:url(fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2")}

#sur-le-fil {
  --bg: #F7F4EB; --surface: #ffffff; --ink: #1B2130; --muted: #6A6E78; --line: #DED6C2; --wire: #1c2026;
  --m: #27508F; --m-soft: #E7ECF4; --g: #3F7A5E; --g-soft: #E3EFE5;
  --warn: #8A5A12; --warn-soft: #F7EDDC; --crit: #B5381F; --crit-soft: #f6dcd9;
  --f-display: "Bricolage Grotesque", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.55;
}
#sur-le-fil * { box-sizing: border-box; }
#sur-le-fil [hidden] { display: none !important; }
#sur-le-fil [id] { scroll-margin-top: 130px; }
#sur-le-fil h1, #sur-le-fil h2, #sur-le-fil h3 { font-family: var(--f-display); line-height: 1.06; margin: 0; text-wrap: balance; color: inherit; letter-spacing: normal; }
#sur-le-fil p { margin: 0; }
#sur-le-fil a { color: var(--ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
#sur-le-fil button { font: inherit; color: inherit; }
#sur-le-fil :focus-visible { outline: 2px solid var(--m); outline-offset: 2px; }
#sur-le-fil .fw { max-width: 1100px; margin: 0 auto; padding-inline: 16px; }
#sur-le-fil .mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
#sur-le-fil .eyebrow { font-family: var(--f-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
#sur-le-fil .cm { color: var(--m); } #sur-le-fil .cg { color: var(--g); }

/* Barre */
#sur-le-fil .bar { padding-block: 12px; }
#sur-le-fil .bar .fw { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; }
#sur-le-fil .who { font-family: var(--f-display); font-weight: 700; }
#sur-le-fil .switch { display: inline-flex; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 3px; gap: 2px; }
#sur-le-fil .switch button { border: 0; background: none; border-radius: 999px; padding: 6px 14px; cursor: pointer; font-weight: 700; font-size: .92rem; color: var(--muted); }
#sur-le-fil .switch button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }

/* Ouverture */
#sur-le-fil .fhero { padding-top: 26px; }
#sur-le-fil .fhero h1 { font-size: clamp(3.4rem, 12vw, 8.5rem); font-weight: 800; letter-spacing: -.025em; line-height: .9; margin-top: 10px; }
#sur-le-fil .fhero .tag { font-family: var(--f-display); font-weight: 500; font-size: clamp(1.05rem, 2.2vw, 1.35rem); color: var(--muted); margin-top: 14px; max-width: 46ch; }
#sur-le-fil .stage { width: 100%; overflow: hidden; margin-top: 4px; }
#sur-le-fil .stage svg { display: block; width: 100%; height: auto; aspect-ratio: 5 / 1; max-width: 1400px; margin: 0 auto; }
@media (max-width: 700px) { #sur-le-fil .stage svg { aspect-ratio: auto; height: 160px; } }
#sur-le-fil .hero-copy { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 24px; align-items: end; padding-block: 6px 34px; }
@media (max-width: 800px) { #sur-le-fil .hero-copy { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .headline { font-family: var(--f-display); font-weight: 700; font-size: clamp(1.25rem, 2.6vw, 1.7rem); line-height: 1.2; max-width: 30ch; }
#sur-le-fil .flead { margin-top: 10px; max-width: 60ch; color: var(--muted); }
#sur-le-fil .cta { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-start; }
#sur-le-fil .fbtn { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; padding: 10px 18px; font-weight: 700; cursor: pointer; text-decoration: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink); }
#sur-le-fil .fbtn.dark { background: var(--ink); color: var(--bg); border-color: var(--ink); }
#sur-le-fil .fbtn.fsmall { padding: 5px 12px; font-size: .86rem; }
#sur-le-fil .fbtn[disabled] { opacity: .45; cursor: not-allowed; }
#sur-le-fil .tilt { transform-box: view-box; transition: transform .7s cubic-bezier(.3,.7,.3,1); }
@media (prefers-reduced-motion: no-preference) { #sur-le-fil .sway { transform-box: view-box; animation: slf-sway 6s ease-in-out infinite; } }
@keyframes slf-sway { 0%, 100% { transform: rotate(-1.6deg); } 50% { transform: rotate(1.6deg); } }

#sur-le-fil main section { padding-block: 44px; border-top: 1px solid var(--line); }
#sur-le-fil .sec-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 22px; max-width: 68ch; }
#sur-le-fil .sec-head h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); font-weight: 700; }
#sur-le-fil .sec-head p { color: var(--muted); }

/* Les deux poids */
#sur-le-fil .poles { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
@media (max-width: 700px) { #sur-le-fil .poles { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .pole { background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--pc); border-radius: 10px; padding: 18px; display: flex; flex-direction: column; gap: 8px; }
#sur-le-fil .pole.m { --pc: var(--m); } #sur-le-fil .pole.g { --pc: var(--g); }
#sur-le-fil .pole h3 { font-size: 1.35rem; color: var(--pc); }
#sur-le-fil .pole .q { font-family: var(--f-display); font-weight: 500; font-size: 1.12rem; }
#sur-le-fil .thesis { font-size: 1.12rem; max-width: 66ch; margin-bottom: 22px; }

/* Chutes */
#sur-le-fil .falls { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
@media (max-width: 700px) { #sur-le-fil .falls { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .fallcol { display: flex; flex-direction: column; gap: 10px; }
#sur-le-fil .fallcol h3 { font-size: 1.05rem; }
#sur-le-fil .fall { border-left: 4px solid var(--pc); background: var(--surface); border-radius: 0 10px 10px 0; padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
#sur-le-fil .fall .k { font-family: var(--f-mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
#sur-le-fil .fall strong { font-family: var(--f-display); font-size: 1.08rem; }
#sur-le-fil .nopole { margin-top: 14px; padding: 12px 14px; border: 1px dashed var(--line); border-radius: 10px; color: var(--muted); }

/* Parcours */
#sur-le-fil .track { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 10px 6px 4px; overflow-x: auto; }
#sur-le-fil .track svg { display: block; width: 100%; min-width: 620px; height: auto; }
#sur-le-fil .stn { cursor: pointer; }
#sur-le-fil .stn:focus-visible { outline: none; }
#sur-le-fil .stn:focus-visible circle { stroke-width: 4; }
#sur-le-fil .panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; margin-top: 18px; }
@media (max-width: 760px) { #sur-le-fil .panel { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .panel h3 { font-size: 1.45rem; }
#sur-le-fil .chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 4px; }
#sur-le-fil .chip { font-family: var(--f-mono); font-size: .76rem; padding: 2px 9px; border-radius: 999px; border: 1px solid currentColor; }
#sur-le-fil .chip.m { color: var(--m); } #sur-le-fil .chip.g { color: var(--g); }
#sur-le-fil .steps { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
#sur-le-fil .steps li { display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: 8px; font-size: .95rem; }
#sur-le-fil .steps .n { font-family: var(--f-mono); color: var(--muted); }
#sur-le-fil .kv { display: flex; flex-direction: column; gap: 12px; }
#sur-le-fil .kv .k { font-family: var(--f-mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
#sur-le-fil .risk { background: var(--warn-soft); color: var(--ink); border-radius: 8px; padding: 10px 12px; font-size: .94rem; }
#sur-le-fil .fnav { display: flex; gap: 8px; margin-top: 14px; }

/* Test */
#sur-le-fil .quiz { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 26px; align-items: start; }
@media (max-width: 820px) { #sur-le-fil .quiz { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .qlist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
#sur-le-fil .qlist li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 14px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
@media (max-width: 480px) { #sur-le-fil .qlist li { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .yn { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
#sur-le-fil .yn button { border: 0; background: none; padding: 5px 14px; cursor: pointer; font-weight: 700; color: var(--muted); }
#sur-le-fil .yn button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
#sur-le-fil .result { position: sticky; top: 132px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
@media (max-width: 820px) { #sur-le-fil .result { position: static; } }
#sur-le-fil .result svg { width: 100%; height: auto; display: block; }
#sur-le-fil .wbar { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: 10px; align-items: center; font-size: .9rem; }
#sur-le-fil .wbar .t { position: relative; height: 10px; background: var(--bg); border-radius: 5px; }
#sur-le-fil .wbar .f { position: absolute; inset: 0 auto 0 0; border-radius: 5px; }
#sur-le-fil .wbar .mid { position: absolute; left: 50%; top: -4px; bottom: -4px; width: 2px; background: var(--ink); }
#sur-le-fil .verdict { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; }
#sur-le-fil .row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
#sur-le-fil .hint { font-size: .82rem; color: var(--muted); }

/* Références, format */
#sur-le-fil .two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; }
@media (max-width: 760px) { #sur-le-fil .two { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .two h3 { font-size: 1.2rem; margin-bottom: 10px; }
#sur-le-fil .two ul { margin: 0; padding-left: 1.1em; display: flex; flex-direction: column; gap: 6px; }
#sur-le-fil .facts { display: flex; flex-direction: column; border-top: 2px solid var(--ink); margin: 0; }
#sur-le-fil .facts div { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); }
#sur-le-fil .facts dt { font-family: var(--f-mono); font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding-top: 3px; }
#sur-le-fil .facts dd { margin: 0; font-weight: 700; }
#sur-le-fil .refs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 760px) { #sur-le-fil .refs { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .ref { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; display: flex; flex-direction: column; gap: 6px; }
#sur-le-fil .ref .n { font-family: var(--f-mono); font-size: .76rem; color: var(--muted); }
#sur-le-fil .ref h3 { font-size: 1.15rem; }
#sur-le-fil .ref .who2 { font-size: .9rem; color: var(--muted); }
#sur-le-fil .ref.frame { border-color: var(--ink); }
#sur-le-fil .fnote { font-size: .88rem; color: var(--muted); margin-top: 12px; }
#sur-le-fil .fcontact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
@media (max-width: 760px) { #sur-le-fil .fcontact { grid-template-columns: minmax(0, 1fr); } }
#sur-le-fil .fcontact h2 { font-size: 1.5rem; }
#sur-le-fil .fcontact .cta { margin-top: 14px; }
#sur-le-fil .clist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
#sur-le-fil .clist li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
#sur-le-fil .clist .k { font-family: var(--f-mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); width: 6.5rem; }
#sur-le-fil .clist .val { font-weight: 700; word-break: break-word; min-width: 0; }
#sur-le-fil footer { padding-block: 26px 34px; font-size: .86rem; color: var(--muted); border-top: 1px solid var(--line); }
#sur-le-fil footer .fw { display: flex; flex-direction: column; gap: 8px; }
#sur-le-fil footer ul { margin: 6px 0 0; padding-left: 1.1em; }
#sur-le-fil footer details summary { cursor: pointer; }
@media (prefers-reduced-motion: reduce) { #sur-le-fil .tilt { transition: none; } }