/* Direction D · Flux et matière : nuit cinématique, flux de poudre interactif en accueil, nuancier des marchés, typographie éditoriale. Thème sombre unique, assumé. */
:root {
  --bg: #07090C;
  --surface: #0D1116;
  --ink: #F1EEE8;
  --muted: #9AA0A8;
  --line: rgba(241, 238, 232, .12);
  --line-strong: rgba(241, 238, 232, .45);
  --accent: #D6A15E;
  --accent-2: #F2C58A;
  --accent-soft: #241B11;
  --deep: #07090C;
  --deep-2: #0C1015;
  --deep-ink: #F1EEE8;
  --deep-muted: #9AA0A8;
  --deep-line: rgba(241, 238, 232, .12);
  --bar-dim: #2A3038;
  --ochre: #D9A33C; --oxide: #C4583A; --ultra: #6F8FE0; --green: #7FA46A;
  --grain-a: #D6A15E;
  --grain-b: #8796A5;
  --grain-hi: rgba(255, 255, 255, .28);
  --grain-ink: #F1EEE8;
  --font-display: "Bricolage Grotesque", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Manrope", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --wrap: 1240px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 1rem; line-height: 1.62; }
a { color: inherit; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: 20px; }

/* Typo */
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; }
h1 { font-stretch: 72%; font-weight: 780; font-size: clamp(2.6rem, 6.4vw, 5.2rem); line-height: .98; letter-spacing: -.012em; }
h2 { font-stretch: 80%; font-weight: 740; font-size: clamp(1.8rem, 3.4vw, 2.75rem); line-height: 1.04; letter-spacing: -.008em; }
h3 { font-stretch: 92%; font-weight: 680; font-size: 1.16rem; line-height: 1.25; }
p { margin: 0; }
.lead { font-size: 1.13rem; color: var(--muted); max-width: 60ch; }
.label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; color: var(--accent); font-weight: 500; display: flex; align-items: center; gap: 10px; }
.label::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.prose { max-width: 64ch; display: grid; gap: 14px; }
.prose p { color: var(--muted); }
.prose strong { color: var(--ink); font-weight: 600; }

/* Bandeau contact */
.topbar { background: var(--deep); color: var(--deep-muted); font-size: .8rem; border-bottom: 1px solid var(--deep-line); }
.topbar .wrap { display: flex; flex-wrap: wrap; gap: 4px 22px; padding-block: 8px; align-items: center; }
.topbar strong { color: var(--deep-ink); font-weight: 600; }
.topbar .mono { color: var(--deep-ink); user-select: all; }
.topbar a { color: var(--deep-ink); text-decoration: none; }
.topbar a:hover { color: var(--grain-a); }
.topbar .sp { margin-left: auto; }
@media (max-width: 640px) { .topbar .sp { margin-left: 0; } .topbar .who { display: none; } }

/* En-tête */
.header { background: var(--deep); color: var(--deep-ink); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 30; border-bottom: 1px solid var(--deep-line); }
.header .wrap { display: flex; align-items: center; gap: 24px; padding-block: 14px; position: relative; }
.brand { text-decoration: none; display: grid; gap: 4px; line-height: 1; }
.brand b { font-family: var(--font-display); font-stretch: 125%; font-weight: 800; font-size: 1.32rem; letter-spacing: .08em; }
.brand span { white-space: nowrap; font-family: var(--font-mono); font-size: .62rem; letter-spacing: .16em; color: var(--deep-muted); }
.nav { margin-left: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 16px; align-items: center; }
.nav a { text-decoration: none; font-size: .86rem; font-weight: 500; color: var(--deep-muted); padding: 6px 0; border-bottom: 1px solid transparent; transition: color .15s, border-color .15s; white-space: nowrap; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--deep-ink); border-color: var(--grain-a); }
.nav .cta-link { background: var(--accent); color: #fff; padding: 8px 14px; border: 0; }
.nav .cta-link:hover { color: #fff; filter: brightness(1.1); }
.menu { display: none; margin-left: auto; }
.menu summary { list-style: none; cursor: pointer; font-family: var(--font-mono); font-size: .76rem; letter-spacing: .14em; border: 1px solid var(--deep-line); padding: 8px 12px; }
.menu summary::-webkit-details-marker { display: none; }
.menu ul { list-style: none; margin: 0; padding: 8px 0; position: absolute; left: 0; right: 0; top: 100%; background: var(--deep); border-bottom: 1px solid var(--deep-line); }
.menu li a { display: block; padding: 11px 20px; text-decoration: none; color: var(--deep-ink); }
@media (max-width: 1180px) { .nav { display: none; } .menu { display: block; } }

/* Hero sombre */
.hero { background: var(--deep); color: var(--deep-ink); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--deep-line) 1px, transparent 1px), linear-gradient(90deg, var(--deep-line) 1px, transparent 1px);
  background-size: 48px 48px; mask-image: linear-gradient(90deg, #000 0%, transparent 70%); -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 70%); opacity: .5; }
.hero .wrap { position: relative; padding-block: clamp(44px, 6vw, 80px) clamp(80px, 9vw, 120px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.hero-text { display: grid; gap: 22px; }
.hero h1 em { font-style: normal; color: var(--grain-a); }
.hero .lead { color: var(--deep-muted); }
.crumb { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--deep-muted); }
.crumb a { text-decoration: none; }
.crumb a:hover { color: var(--deep-ink); }
.range-big { font-family: var(--font-display); font-stretch: 70%; font-weight: 700; font-size: clamp(1.6rem, 2.6vw, 2.1rem); color: var(--deep-ink); display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.range-big small { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; color: var(--deep-muted); font-weight: 400; }
.scope { position: relative; border: 1px solid var(--deep-line); background: #0B1015; aspect-ratio: 4 / 3.4; max-width: 100%; }
.scope canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.scope figcaption { position: absolute; left: 0; right: 0; top: 0; display: flex; justify-content: space-between; gap: 10px; padding: 10px 12px; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .12em; color: var(--deep-muted); background: linear-gradient(#0B1015, transparent); }
.scope .corner { position: absolute; width: 14px; height: 14px; border-color: var(--grain-a); border-style: solid; }
.scope .c1 { left: -1px; bottom: -1px; border-width: 0 0 2px 2px; }
.scope .c2 { right: -1px; top: -1px; border-width: 2px 2px 0 0; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: minmax(0, 1fr); } .scope { aspect-ratio: 16 / 10; } }

.btns { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: .94rem; padding: 13px 20px; border: 1px solid var(--ink); background: transparent; color: var(--ink); transition: background .15s, color .15s, filter .15s; cursor: pointer; font-family: inherit; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost:hover { background: var(--ink); color: var(--bg); }
.dark .btn.ghost, .hero .btn.ghost { border-color: var(--deep-line); color: var(--deep-ink); }
.dark .btn.ghost:hover, .hero .btn.ghost:hover { background: var(--deep-ink); color: var(--deep); }
.btn .arr { font-family: var(--font-mono); }

/* Echelle granulométrique */
.scale-wrap { margin-top: clamp(-90px, -7vw, -56px); position: relative; z-index: 2; }
.scale { background: var(--surface); border: 1px solid var(--line); padding: 22px 24px 16px; box-shadow: 0 24px 48px -32px rgba(10, 16, 22, .45); }
.scale-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 20px; margin-bottom: 10px; }
.scale-head p { font-size: .8rem; color: var(--muted); }
.scale-x { overflow-x: auto; }
.scale svg { display: block; width: 100%; min-width: 640px; height: auto; }
.scale .tick { stroke: var(--line); stroke-width: 1; }
.scale .tick.major { stroke: var(--muted); stroke-opacity: .55; }
.scale .axis { stroke: var(--ink); stroke-width: 1.2; }
.scale .tl { fill: var(--muted); font-family: var(--font-mono); font-size: 12px; }
.scale .bar { fill: var(--accent); }
.scale .bar.dim { fill: var(--bar-dim); }
.scale .bl { fill: var(--ink); font-family: var(--font-body); font-size: 13px; font-weight: 600; }
.scale .bl.dim { fill: var(--muted); font-weight: 500; }
.scale .br { fill: var(--muted); font-family: var(--font-mono); font-size: 11px; }
.scale a:hover .bl { fill: var(--accent); }

/* Chiffres clés */
.figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); }
.figure { padding: 22px 20px 0 0; display: grid; gap: 6px; align-content: start; }
.figure b { font-family: var(--font-display); font-stretch: 70%; font-weight: 760; font-size: clamp(2rem, 3.6vw, 2.8rem); line-height: 1; font-variant-numeric: tabular-nums; }
.figure span { font-size: .9rem; color: var(--muted); max-width: 24ch; }
@media (max-width: 800px) { .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; } }

/* Sections */
.section { padding-block: clamp(56px, 8vw, 104px); }
.section.tight { padding-block: clamp(36px, 5vw, 56px); }
.section + .section:not(.dark) { border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 16px 48px; margin-bottom: 44px; align-items: end; }
.section-head > div { display: grid; gap: 14px; }
@media (max-width: 860px) { .section-head { grid-template-columns: minmax(0, 1fr); } }
.dark { background: var(--deep); color: var(--deep-ink); }
.dark .lead, .dark p { color: var(--deep-muted); }
.dark h2, .dark h3 { color: var(--deep-ink); }

/* Liste des opérations */
.ops { border-top: 1px solid var(--line-strong); }
.op { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 2fr); gap: 24px; padding-block: 26px; padding-inline: 8px; border-bottom: 1px solid var(--line); text-decoration: none; align-items: baseline; transition: background .15s; }
.op:hover { background: var(--surface); }
.op:hover h3 { color: var(--accent); }
.op .code { font-family: var(--font-mono); font-size: .75rem; color: var(--muted); padding-left: 8px; }
.op h3 { font-size: 1.35rem; font-stretch: 82%; }
.op p { color: var(--muted); font-size: .95rem; }
.op .range { text-align: right; font-size: .84rem; padding-right: 8px; }
@media (max-width: 760px) { .op { grid-template-columns: minmax(0, 1fr); gap: 6px; } .op .code { padding-left: 0; } .op .range { text-align: left; } }

/* Grilles */
.grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cell { background: var(--surface); padding: 26px; display: grid; gap: 10px; align-content: start; }
.cell p { color: var(--muted); font-size: .95rem; }
.cell ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .93rem; display: grid; gap: 4px; }
.cell .k { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; color: var(--accent); }
.dark .grid { background: var(--deep-line); border-color: var(--deep-line); }
.dark .cell { background: var(--deep); }
@media (max-width: 980px) { .grid.c4, .grid.c3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .grid.c4, .grid.c3, .grid.c2 { grid-template-columns: minmax(0, 1fr); } }

/* Etapes */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); counter-reset: s; }
.steps.s4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.steps li { counter-increment: s; padding: 20px 22px 0 0; display: grid; gap: 8px; align-content: start; border-top: 1px solid var(--line-strong); position: relative; }
.steps li::before { content: counter(s, decimal-leading-zero); font-family: var(--font-mono); font-size: .76rem; color: var(--accent); }
.steps li::after { content: ""; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; background: var(--accent); }
.steps p { color: var(--muted); font-size: .93rem; }
.dark .steps li { border-color: var(--deep-line); }
@media (max-width: 900px) { .steps, .steps.s4 { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 26px; } }
@media (max-width: 520px) { .steps, .steps.s4 { grid-template-columns: minmax(0, 1fr); } }

/* Certifications */
.certs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.cert { border: 1px solid var(--deep-line); padding: 18px 16px; display: grid; gap: 8px; align-content: start; position: relative; }
.cert::before { content: ""; position: absolute; top: 0; left: 0; width: 22px; height: 2px; background: var(--grain-a); }
.cert b { font-family: var(--font-display); font-stretch: 78%; font-weight: 760; font-size: 1.3rem; color: var(--deep-ink); line-height: 1.05; }
.cert span { font-size: .82rem; color: var(--deep-muted); line-height: 1.4; }
.certs.light .cert { border-color: var(--line); background: var(--surface); }
.certs.light .cert b { color: var(--ink); }
.certs.light .cert span { color: var(--muted); }
@media (max-width: 1000px) { .certs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .certs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Fiche technique */
.spec { width: 100%; border-collapse: collapse; font-size: .95rem; }
.spec th, .spec td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec tr:last-child th, .spec tr:last-child td { border-bottom: 0; }
.spec th { font-family: var(--font-mono); font-weight: 500; font-size: .72rem; letter-spacing: .12em; color: var(--muted); width: 32%; }
.spec td { font-variant-numeric: tabular-nums; }
.spec-x { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-top: 2px solid var(--line-strong); }

.two { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .two { grid-template-columns: minmax(0, 1fr); } }

.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.chips li { font-size: .86rem; padding: 6px 12px; border: 1px solid var(--line); background: var(--surface); }
.chips a { text-decoration: none; }
.chips a:hover { color: var(--accent); }

.note { font-size: .86rem; color: var(--muted); border-left: 2px solid var(--accent); padding-left: 14px; }

/* FAQ */
.faq { border-top: 1px solid var(--line-strong); max-width: 900px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative; font-family: var(--font-display); font-stretch: 90%; font-weight: 650; font-size: 1.1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 16px; font-family: var(--font-mono); font-size: 1.2rem; color: var(--accent); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--muted); max-width: 70ch; }

/* CTA */
.cta { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px 48px; align-items: center; }
.cta > div { display: grid; gap: 14px; }
@media (max-width: 800px) { .cta { grid-template-columns: minmax(0, 1fr); } }

/* Formulaire */
.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; background: var(--surface); border: 1px solid var(--line); border-top: 2px solid var(--line-strong); padding: 30px; }
.form .full { grid-column: 1 / -1; }
.field { display: grid; gap: 6px; }
.field label, .field legend { font-size: .8rem; font-weight: 600; letter-spacing: .01em; }
.field input, .field select, .field textarea { font: inherit; font-size: .95rem; color: var(--ink); background: var(--bg); border: 1px solid var(--line); padding: 11px 12px; width: 100%; border-radius: 0; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); outline: none; }
.field textarea { min-height: 130px; resize: vertical; }
fieldset.field { border: 0; padding: 0; margin: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.checks label { font-weight: 400; font-size: .9rem; display: flex; gap: 7px; align-items: center; }
.checks input { accent-color: var(--accent); }
.form-msg { grid-column: 1 / -1; padding: 14px; background: var(--accent-soft); font-size: .92rem; }
@media (max-width: 640px) { .form { grid-template-columns: minmax(0, 1fr); padding: 20px; } }
.contact-card { display: grid; gap: 18px; align-content: start; }
.contact-card .row { display: grid; gap: 4px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.contact-card .row span { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; color: var(--muted); }
.contact-card .row a, .contact-card .row b { font-weight: 600; text-decoration: none; font-size: 1.05rem; }
.contact-card .row a:hover { color: var(--accent); }
.contact-card .row b.mono { user-select: all; font-size: .95rem; }

/* Pied de page */
.footer { background: var(--deep); color: var(--deep-muted); font-size: .88rem; border-top: 1px solid var(--deep-line); }
.footer .wrap { padding-block: 56px 28px; display: grid; gap: 36px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr)); gap: 28px; }
.footer b { color: var(--deep-ink); }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.footer a { text-decoration: none; color: var(--deep-muted); }
.footer a:hover { color: var(--deep-ink); }
.footer .h { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; color: var(--deep-ink); margin-bottom: 12px; }
.footer .legal { border-top: 1px solid var(--deep-line); padding-top: 18px; display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: .8rem; }
.footer .brandline { font-family: var(--font-display); font-stretch: 125%; font-weight: 800; font-size: 1.3rem; letter-spacing: .08em; color: var(--deep-ink); }
@media (max-width: 800px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .footer-grid > :first-child { grid-column: 1 / -1; } }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } html { scroll-behavior: auto; } }
.seccard { text-decoration: none; transition: background .15s; }
.seccard:hover { background: var(--bg); }
.seccard:hover h3 { color: var(--accent); }
.seccard .go { font-size: .74rem; color: var(--accent); letter-spacing: .06em; margin-top: 4px; }
.footer-grid { grid-template-columns: minmax(0, 1.6fr) repeat(4, minmax(0, 1fr)); }
@media (max-width: 1000px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .footer-grid > :first-child { grid-column: 1 / -1; } }
.scale .hatch-bg { fill: var(--accent-soft); }
.scale .hatch-ln { stroke: var(--accent); stroke-width: 2.4; }
.scale .bar.hatched { fill: url(#hatch); stroke: var(--accent); stroke-width: 1; }
.scale .bar.hatched.dim { fill: none; stroke: var(--bar-dim); stroke-dasharray: 3 3; }
.scale .bs { fill: var(--muted); font-family: var(--font-body); font-size: 11px; }
.scale .lane { stroke: var(--line); stroke-width: 1; stroke-dasharray: 4 4; }
.scale .lanel { fill: var(--accent); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .14em; }
.scale .legend { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; }
.scale .legend span { display: inline-flex; align-items: center; gap: 7px; }
.scale .sw { display: inline-block; width: 22px; height: 10px; background: var(--accent); }
.scale .sw.hatched { background: repeating-linear-gradient(45deg, var(--accent) 0 2px, var(--accent-soft) 2px 5px); outline: 1px solid var(--accent); }
.scope.photo { background: var(--deep-2); }
.scope.photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.scope.photo figcaption { background: linear-gradient(rgba(9, 13, 17, .75), transparent); color: var(--deep-ink); }
.scale-intro { display: grid; gap: 10px; max-width: 760px; margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.scale-intro h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.scale-intro p { color: var(--muted); }
.small-note { font-size: .82rem; color: var(--deep-muted); }
.section:not(.dark) .small-note { color: var(--muted); }
.form-step { grid-column: 1 / -1; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; color: var(--accent); padding-top: 8px; border-top: 1px solid var(--line); margin: 6px 0 0; }
.form-step:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.field input[type="file"] { padding: 8px; background: var(--surface); }
.atypique { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: clamp(22px, 4vw, 40px); }
.op .range { font-family: var(--font-body); font-weight: 600; color: var(--accent); font-size: .86rem; }
.figure b { font-size: clamp(1.6rem, 2.6vw, 2.2rem); }

/* ===== Déclinaison D ===== */
h1 { font-weight: 800; font-stretch: 78%; letter-spacing: -.03em; line-height: .92; }
h2 { font-weight: 800; font-stretch: 80%; letter-spacing: -.025em; line-height: .98; font-size: clamp(2rem, 4.2vw, 3.4rem); }
h3 { font-weight: 700; font-stretch: 92%; letter-spacing: -.01em; }
.hero h1 em, .hero h1 span { background: linear-gradient(90deg, var(--accent-2), var(--ochre) 45%, var(--oxide)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero { background: radial-gradient(110% 80% at 75% 15%, #1C160F 0%, var(--bg) 62%); }
.hero::before { opacity: .25; }
.header, .topbar { background: rgba(7, 9, 12, .82); backdrop-filter: blur(12px); }
.brand b { font-family: var(--font-display); font-stretch: 100%; letter-spacing: -.01em; font-weight: 800; font-size: 1.45rem; }
.btn { border-color: var(--line-strong); color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #120D07; box-shadow: 0 0 40px -8px rgba(214, 161, 94, .55); }
.btn.primary:hover { background: var(--accent-2); filter: none; }
.btn.ghost:hover, .dark .btn.ghost:hover, .hero .btn.ghost:hover { background: rgba(214, 161, 94, .12); color: var(--accent-2); }
.nav .cta-link { color: #120D07; }
.nav .cta-link:hover { color: #120D07; background: var(--accent-2); }
.label { color: var(--accent); }
.section + .section:not(.dark) { border-top: 1px solid var(--line); }
.dark { background: var(--deep-2); }
.cell, .contact-card .row, .spec-x, .form, .scale, .chips li { background: var(--surface); }
.grid { background: var(--line); border-color: var(--line); }
.spec-x { border-top: 2px solid var(--accent); }
.scale { box-shadow: 0 30px 60px -40px rgba(0, 0, 0, .9); }
.field input, .field select, .field textarea { background: var(--bg); color: var(--ink); }
.form-msg { background: var(--accent-soft); }
.op:hover { background: rgba(214, 161, 94, .06); }
.op .range { color: var(--accent-2); }
.oprow { display: grid; grid-template-columns: 80px minmax(0, 4fr) minmax(0, 5fr) auto; gap: 20px; align-items: baseline; padding: 26px 0; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding .25s, background .25s; }
.oprow:hover { background: rgba(214, 161, 94, .06); padding-inline: 16px; }
.oprow em { font-style: normal; font-family: var(--font-display); font-size: 2.6rem; font-weight: 800; color: var(--dot); line-height: 1; text-shadow: 0 0 24px color-mix(in srgb, var(--dot) 45%, transparent); }
.oprow h3 { font-size: 1.5rem; } .oprow p { color: var(--muted); } .oprow span { font-weight: 700; color: var(--accent-2); white-space: nowrap; }
.oplist { border-top: 1px solid var(--line-strong); }
@media (max-width: 860px) { .oprow { grid-template-columns: 60px minmax(0, 1fr); } .oprow p, .oprow span { grid-column: 2; } }
/* nuancier */
.swatches { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.swc { position: relative; aspect-ratio: 4 / 3.2; max-width: 100%; overflow: hidden; text-decoration: none; background: var(--c); isolation: isolate; }
.swc canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; transition: transform .7s, filter .4s; filter: saturate(.9) brightness(.9); }
.swc::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(7, 9, 12, .88) 0%, rgba(7, 9, 12, .15) 55%, transparent); z-index: 1; }
.swc:hover canvas, .swc:focus-visible canvas { transform: scale(1.08); filter: saturate(1.1) brightness(1.05); }
.swc .t { position: absolute; left: 16px; right: 16px; bottom: 14px; z-index: 2; display: grid; gap: 4px; }
.swc h3 { font-size: 1.2rem; line-height: 1.1; color: var(--ink); }
.swc p { font-size: .82rem; color: #C9CDD2; max-height: 0; opacity: 0; transition: max-height .4s, opacity .4s; overflow: hidden; }
.swc:hover p, .swc:focus-visible p { max-height: 80px; opacity: 1; }
.swc i { position: absolute; right: 14px; top: 12px; z-index: 2; font-style: normal; font-family: var(--font-mono); font-size: .68rem; color: rgba(255, 255, 255, .8); }
@media (max-width: 960px) { .swatches { grid-template-columns: repeat(2, minmax(0, 1fr)); } .swc p { max-height: 80px; opacity: 1; } }
/* accueil : flux */
.hero.flux { min-height: min(860px, 100svh); display: grid; align-items: end; }
.hero.flux canvas#flux { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; }
.hero.flux::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7, 9, 12, .94) 0%, rgba(7, 9, 12, .6) 42%, rgba(7, 9, 12, 0) 72%), linear-gradient(0deg, var(--bg) 0%, transparent 28%); pointer-events: none; }
.hero.flux .wrap { position: relative; z-index: 2; width: 100%; padding-block: clamp(80px, 12vw, 150px) clamp(110px, 12vw, 150px); pointer-events: none; }
.hero.flux .wrap a { pointer-events: auto; }
.hero.flux h1 { font-size: clamp(3rem, 7.6vw, 6.6rem); max-width: 12ch; }
.hero.flux .lead { color: #C9CDD2; max-width: 56ch; margin-top: 24px; }
.hint { margin-top: 22px; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; color: var(--muted); }
/* CTA final tricolore */
.cta h2 span { display: block; }
.cta h2 span:nth-child(1) { color: var(--accent-2); } .cta h2 span:nth-child(2) { color: var(--oxide); } .cta h2 span:nth-child(3) { color: var(--ultra); }
.section.dark.final-cta { background: radial-gradient(70% 120% at 100% 100%, rgba(214, 161, 94, .18), transparent 60%), var(--deep-2); }
.final-cta h2 { font-size: clamp(2.6rem, 6.4vw, 5.4rem); line-height: .9; }
.small-note { color: var(--muted); }
.figure b { color: var(--accent-2); }
.cert::before { background: var(--accent); }
.certs.light .cert { background: var(--surface); border-color: var(--line); }
.certs.light .cert b { color: var(--ink); }
.atypique { background: var(--surface); }
.scope { background: #05070A; }

/* ===== Thème clair minéral (remplace la nuit de D, garde sa typographie, son flux et son nuancier) ===== */
:root {
  --bg: #F1F2EF;
  --surface: #FFFFFF;
  --ink: #17191C;
  --muted: #5B6067;
  --line: rgba(23, 25, 28, .12);
  --line-strong: rgba(23, 25, 28, .55);
  --accent: #A3601F;
  --accent-2: #8C4F17;
  --accent-soft: #F6ECDF;
  --deep: #E6E8E3;
  --deep-2: #E6E8E3;
  --deep-ink: #17191C;
  --deep-muted: #5B6067;
  --deep-line: rgba(23, 25, 28, .12);
  --bar-dim: #D3D7DC;
  --ochre: #B07F1F; --oxide: #A8432A; --ultra: #2B4A9C; --green: #3E6A4F;
  --grain-a: #A3601F;
  --grain-b: #5E6B78;
  --grain-hi: rgba(255, 255, 255, .45);
  --grain-ink: #17191C;
  color-scheme: light;
}
body { background: var(--bg); color: var(--ink); }
.topbar { background: #17191C; color: #B9BDC2; }
.topbar strong, .topbar .mono, .topbar a { color: #FFFFFF; }
.header { background: rgba(255, 255, 255, .9); border-bottom: 1px solid var(--line); }
.brand b { color: var(--ink); } .brand span { color: var(--muted); }
.nav a { color: var(--muted); } .nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }
.nav .cta-link, .nav .cta-link:hover { color: #FFFFFF; }
.nav .cta-link:hover { background: var(--accent-2); }
.menu summary { border-color: var(--line); color: var(--ink); }
.menu ul { background: #FFFFFF; } .menu li a { color: var(--ink); }
.btn { color: var(--ink); border-color: var(--line-strong); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #FFFFFF; box-shadow: 0 12px 30px -14px rgba(163, 96, 31, .7); }
.btn.primary:hover { background: var(--accent-2); color: #FFFFFF; }
.btn.ghost:hover, .dark .btn.ghost:hover, .hero .btn.ghost:hover { background: var(--ink); color: #FFFFFF; }
.dark .btn.ghost, .hero .btn.ghost { border-color: var(--line-strong); color: var(--ink); }
.hero { background: radial-gradient(90% 70% at 80% 10%, #FBF4EA 0%, var(--bg) 60%); color: var(--ink); }
.hero .lead, .hero.flux .lead { color: var(--muted); }
.hero::before { background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); opacity: .35; }
.crumb, .crumb a { color: var(--muted); }
.range-big { color: var(--ink); } .range-big small { color: var(--muted); }
.hero.flux::after { background: linear-gradient(90deg, rgba(241, 242, 239, .96) 0%, rgba(241, 242, 239, .7) 42%, rgba(241, 242, 239, 0) 72%), linear-gradient(0deg, var(--bg) 0%, transparent 28%); }
.hero h1 em, .hero h1 span { background: linear-gradient(90deg, #B5671E, #A8432A 70%, #8A3420); -webkit-background-clip: text; background-clip: text; color: transparent; }
.scope { background: #FAFAF7; border-color: var(--line); }
.scope figcaption { background: linear-gradient(rgba(250, 250, 247, .9), transparent); color: var(--muted); }
.scope .corner { border-color: var(--accent); }
.scale { box-shadow: 0 24px 50px -36px rgba(23, 25, 28, .35); }
.spec-x { border-top-color: var(--accent); }
.dark { background: var(--deep-2); color: var(--ink); }
.dark .lead, .dark p { color: var(--muted); } .dark h2, .dark h3 { color: var(--ink); }
.dark .cell { background: #FFFFFF; }
.cert { border-color: var(--line); background: #FFFFFF; }
.cert b { color: var(--ink); } .cert span { color: var(--muted); }
.figure b { color: var(--accent-2); }
.swc h3 { color: #FFFFFF; } .swc p { color: #E4E6E9; }
.oprow em { text-shadow: none; }
.op:hover, .oprow:hover { background: #FFFFFF; }
.section.dark.final-cta { background: radial-gradient(70% 120% at 100% 100%, rgba(163, 96, 31, .14), transparent 60%), var(--deep-2); }
.small-note { color: var(--muted); }
.form-msg { background: var(--accent-soft); }
/* pied de page sombre, seul ancrage foncé */
.footer { background: #17191C; color: #A9AEB4; border-top: 0; }
.footer b, .footer .h, .footer .brandline { color: #FFFFFF; }
.footer a { color: #A9AEB4; } .footer a:hover { color: #FFFFFF; }
.footer .legal { border-top-color: rgba(255, 255, 255, .14); }

/* carte des sites */
.sites { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.map { background: #FFFFFF; border: 1px solid var(--line); padding: 18px; }
.map svg { display: block; width: 100%; height: auto; max-width: 100%; }
.map .fr { fill: #EEF0EC; stroke: var(--line-strong); stroke-width: 1.2; stroke-linejoin: round; }
.map .ring { fill: none; stroke: var(--accent); stroke-width: 1.5; opacity: .5; transform-box: fill-box; transform-origin: center; animation: pulse 2.6s ease-out infinite; }
.map .dot { fill: var(--accent); stroke: #FFFFFF; stroke-width: 3; }
.map .lbl { font-family: var(--font-mono); font-size: 13px; fill: var(--ink); letter-spacing: .04em; }
.map .lbl2 { font-family: var(--font-body); font-size: 12px; fill: var(--muted); }
@keyframes pulse { from { transform: scale(.6); opacity: .7; } to { transform: scale(2.2); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .map .ring { animation: none; } }
.site-list { display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.site-item { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.site-item b { font-family: var(--font-mono); font-size: .8rem; color: var(--accent); padding-top: 4px; }
.site-item h3 { font-size: 1.2rem; } .site-item p { color: var(--muted); font-size: .94rem; margin-top: 4px; }
@media (max-width: 900px) { .sites { grid-template-columns: minmax(0, 1fr); } }

/* bandeau de contact intermédiaire */
.nudge { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 32px; align-items: center; background: #FFFFFF; border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: clamp(20px, 3vw, 30px); margin-top: 40px; }
.nudge h3 { font-size: 1.3rem; } .nudge p { color: var(--muted); margin-top: 4px; }
@media (max-width: 760px) { .nudge { grid-template-columns: minmax(0, 1fr); } }
/* bouton fixe mobile */
.mcta { display: none; }
@media (max-width: 760px) {
  .mcta { display: flex; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom, 0px)); z-index: 40; justify-content: center; align-items: center; gap: 8px; background: var(--accent); color: #FFFFFF; text-decoration: none; font-weight: 700; padding: 15px 18px; box-shadow: 0 14px 30px -10px rgba(23, 25, 28, .45); }
  body { padding-bottom: 76px; }
}
@media (max-width: 760px) { .mcta { transform: translateY(140%); transition: transform .3s; } .mcta.on { transform: none; } }
@media (max-width: 760px) and (prefers-reduced-motion: reduce) { .mcta { transition: none; } }
.site-item .refs{margin-top:8px;font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.02em;color:var(--accent-2)}