/* Layout: a navy "control room" frame (header, hero bands, footer) around calm light content sections;
   amber is used only for sequence numbers and live labels, like indicator lamps on a switchboard. */
:root {
  --bg: #FFFFFF;
  --surface: #F2F5F9;
  --card: #FFFFFF;
  --ink: #16263A;
  --muted: #586A7E;
  --line: #D5DEE8;
  --accent: #1D5FAD;
  --accent-soft: #E4EDF8;
  --band: #0B2545;
  --band-2: #12335E;
  --on-band: #FFFFFF;
  --on-band-muted: #B9C9DC;
  --amber: #F2A33A;
  --amber-ink: #8A5300;
  --font-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
  --font-body: "Barlow", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: 2.2rem;
  --step-4: clamp(2.4rem, 5vw, 3.6rem);
  --radius: 4px;
  --wrap: 72rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A1524; --surface: #0F1F33; --card: #12253D; --ink: #E5ECF4; --muted: #9CAEC2;
    --line: #22395A; --accent: #7DBBF0; --accent-soft: #17304F; --band: #071629; --band-2: #0E2848;
    --on-band: #FFFFFF; --on-band-muted: #A9BCD3; --amber: #F4AE4E; --amber-ink: #F4AE4E;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0A1524; --surface: #0F1F33; --card: #12253D; --ink: #E5ECF4; --muted: #9CAEC2;
  --line: #22395A; --accent: #7DBBF0; --accent-soft: #17304F; --band: #071629; --band-2: #0E2848;
  --on-band: #FFFFFF; --on-band-muted: #A9BCD3; --amber: #F4AE4E; --amber-ink: #F4AE4E;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: var(--step-0); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--band); }
img { max-width: 100%; display: block; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.08; text-wrap: balance; margin: 0; letter-spacing: 0.005em; }
h1 { font-size: var(--step-4); text-transform: uppercase; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); }
p { margin: 0; }

/* bilingual */
.l-en { display: none; }
html[data-lang="en"] .l-en { display: revert; }
html[data-lang="en"] .l-fr { display: none; }

.wrap {
  width: 100%; max-width: calc(var(--wrap) + 2 * 16px); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.eyebrow {
  font-family: var(--font-display); font-weight: 600; font-size: var(--step--1);
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber-ink);
}
.band .eyebrow { color: var(--amber); }
.lead { font-size: var(--step-1); color: var(--muted); max-width: 40em; }
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section.alt { background: var(--surface); }
.section-head { display: grid; gap: 0.75rem; margin-bottom: 2.25rem; max-width: 48rem; }

/* header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--band); color: var(--on-band); border-bottom: 1px solid rgba(255,255,255,0.08); }
.site-header .wrap { display: flex; align-items: center; gap: 1rem; min-height: 4.25rem; }
.brand { display: flex; align-items: center; flex: none; }
.brand img { height: 2.6rem; width: auto; }
.nav { display: flex; gap: 0.25rem; margin-left: auto; align-items: center; }
.nav a {
  color: var(--on-band-muted); text-decoration: none; font-family: var(--font-display); font-weight: 600;
  font-size: 1.05rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.5rem 0.7rem; border-radius: var(--radius);
}
.nav a:hover { color: var(--on-band); }
.nav a[aria-current="page"] { color: var(--on-band); box-shadow: inset 0 -2px 0 var(--amber); border-radius: 0; }
.lang { display: flex; border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius); overflow: hidden; flex: none; }
.lang button {
  background: transparent; color: var(--on-band-muted); border: 0; font: 600 0.85rem var(--font-display);
  letter-spacing: 0.08em; padding: 0.4rem 0.6rem; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--on-band); color: var(--band); }
.menu-btn { display: none; background: transparent; border: 1px solid rgba(255,255,255,0.25); color: var(--on-band); border-radius: var(--radius); padding: 0.45rem 0.6rem; cursor: pointer; font: 600 0.9rem var(--font-display); letter-spacing: 0.08em; }
@media (max-width: 860px) {
  .menu-btn { display: block; margin-left: auto; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; background: var(--band); padding: 0.5rem max(16px, env(safe-area-inset-right, 0px)) 1rem max(16px, env(safe-area-inset-left, 0px)); border-bottom: 1px solid rgba(255,255,255,0.1); }
  .nav.open { display: flex; }
  .nav a { padding: 0.75rem 0.25rem; }
  .nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--amber); padding-left: 0.75rem; }
}

/* hero */
.band { background: var(--band); color: var(--on-band); }
.hero { position: relative; overflow: hidden; }
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--band) 0%, rgba(11,37,69,0.88) 45%, rgba(11,37,69,0.35) 100%); }
.hero .wrap { position: relative; padding-block: clamp(3.5rem, 9vw, 7rem); display: grid; gap: 1.25rem; }
.hero h1 { max-width: 15ch; }
.hero .lead { color: var(--on-band-muted); max-width: 34rem; }
.hero .tag { font-family: var(--font-display); font-style: italic; font-weight: 600; color: var(--amber); font-size: var(--step-1); }
.page-hero .wrap { padding-block: clamp(2.75rem, 7vw, 4.5rem); display: grid; gap: 1rem; }
.page-hero h1 { max-width: 20ch; }
.page-hero .lead { color: var(--on-band-muted); }
.btns { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.25rem; border-radius: var(--radius);
  font: 600 1rem var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--amber); color: #1B1205; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: rgba(255,255,255,0.4); color: var(--on-band); background: transparent; }
.btn-ghost:hover { border-color: var(--on-band); }
.btn-line { border-color: var(--line); color: var(--ink); background: var(--card); }

/* key figures */
.figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid rgba(255,255,255,0.12); }
.figures div { padding: 1.4rem 1rem 1.6rem 0; display: grid; gap: 0.15rem; }
.figures strong { font: 700 clamp(2rem, 4vw, 2.8rem)/1 var(--font-display); color: var(--on-band); }
.figures div > span { color: var(--on-band-muted); font-size: var(--step--1); }
@media (max-width: 700px) { .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* expertise grid (home) */
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; }
@media (max-width: 1000px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .grid-4 { grid-template-columns: minmax(0, 1fr); } }
.tile { display: grid; grid-template-rows: auto 1fr; background: var(--card); border: 1px solid var(--line); text-decoration: none; color: inherit; transition: transform .15s ease, border-color .15s ease; }
.tile:hover { transform: translateY(-2px); border-color: var(--accent); }
.tile .ph { aspect-ratio: 4 / 3; max-width: 100%; overflow: hidden; background: var(--band); }
.tile .ph img { width: 100%; height: 100%; object-fit: cover; }
.tile .ph.icons { display: flex; align-items: center; justify-content: center; gap: 1rem; color: #6CB4EE; }
.tile .ph.icons svg { width: 2rem; height: 2rem; }
.tile .tx { padding: 1rem 1.1rem 1.2rem; display: grid; gap: 0.35rem; align-content: start; min-width: 0; }
.num { font: 700 1rem var(--font-display); color: var(--amber-ink); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.tile h3 { font-size: 1.3rem; color: var(--ink); }
.tile p { color: var(--muted); font-size: var(--step--1); }

/* steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1.25rem; counter-reset: s; }
.steps li { display: grid; gap: 0.5rem; align-content: start; padding-top: 1.1rem; border-top: 3px solid var(--line); position: relative; min-width: 0; }
.steps li::before { counter-increment: s; content: "0" counter(s); font: 700 2.2rem/1 var(--font-display); color: var(--accent); }
.steps li:last-child { border-top-color: var(--amber); }
.steps h3 { font-size: 1.25rem; }
.steps p { color: var(--muted); font-size: var(--step--1); }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* split */
.split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.split.rev > :first-child { order: 2; }
@media (max-width: 860px) { .split { grid-template-columns: minmax(0, 1fr); } .split.rev > :first-child { order: 0; } }
.split .media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; max-width: 100%; }
.stack { display: grid; gap: 1rem; }
.stack p { color: var(--muted); }

/* logos */
.logos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.logos div { background: #FFFFFF; border: 1px solid var(--line); aspect-ratio: 16 / 8; max-width: 100%; display: flex; align-items: center; justify-content: center; padding: 1rem 1.4rem; }
.logos img { max-height: 70%; width: auto; object-fit: contain; }
@media (max-width: 700px) { .logos { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* CTA band */
.cta .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: clamp(2.5rem, 6vw, 4rem); }
.cta h2 { color: var(--on-band); }
.cta p { color: var(--on-band-muted); margin-top: 0.5rem; }

/* values / cards */
.values { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.values div { border-top: 3px solid var(--accent); padding-top: 0.9rem; display: grid; gap: 0.35rem; min-width: 0; }
.values h3 { font-size: 1.2rem; }
.values p { color: var(--muted); font-size: var(--step--1); }
@media (max-width: 900px) { .values { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .values { grid-template-columns: minmax(0, 1fr); } }

.org-top { background: var(--band); color: var(--on-band); padding: 1.25rem 1.5rem; display: grid; gap: 0.25rem; justify-items: center; text-align: center; max-width: 30rem; margin: 0 auto 1.5rem; }
.org-top strong { font: 700 1.5rem var(--font-display); }
.org { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.org div { background: var(--card); border: 1px solid var(--line); padding: 1.1rem 1.2rem; min-width: 0; }
.org h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--accent); }
.org ul { margin: 0; padding-left: 1.1rem; color: var(--ink); font-size: var(--step--1); display: grid; gap: 0.2rem; }
@media (max-width: 900px) { .org { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .org { grid-template-columns: minmax(0, 1fr); } }

.qhse { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.qhse div { background: var(--card); border: 1px solid var(--line); padding: 1.1rem 1.2rem; display: grid; gap: 0.35rem; min-width: 0; }
.qhse h3 { font-size: 1.2rem; }
.qhse p { color: var(--muted); font-size: var(--step--1); }
@media (max-width: 520px) { .qhse { grid-template-columns: minmax(0, 1fr); } }

/* voltage scale (expertises hero) */
.scale { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid rgba(255,255,255,0.18); max-width: 40rem; margin-top: 0.75rem; }
.scale div { padding: 0.7rem 0.9rem; display: grid; gap: 0.1rem; border-right: 1px solid rgba(255,255,255,0.18); min-width: 0; }
.scale div:last-child { border-right: 0; }
.scale strong { font: 700 1.35rem var(--font-display); color: var(--on-band); }
.scale span { font-size: var(--step--1); color: var(--on-band-muted); font-variant-numeric: tabular-nums; }

/* expertise index + detail */
.jump { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.jump a { text-decoration: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 0.4rem 0.75rem; border-radius: 999px; font-size: var(--step--1); font-weight: 600; }
.jump a:hover { border-color: var(--accent); color: var(--accent); }
.exp { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(1.5rem, 4vw, 3rem); align-items: start; padding-block: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--line); scroll-margin-top: 5rem; }
.exp:first-of-type { border-top: 0; }
.exp.rev .exp-media { order: 2; }
@media (max-width: 860px) { .exp { grid-template-columns: minmax(0, 1fr); } .exp.rev .exp-media { order: 0; } }
.exp-media { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: 0.6rem; align-items: stretch; }
.exp-media img { width: 100%; height: 100%; object-fit: cover; max-width: 100%; min-height: 0; }
.exp-media img:first-child { aspect-ratio: 4 / 3.4; }
.exp-media.single { grid-template-columns: minmax(0, 1fr); }
.exp-media.single img { aspect-ratio: 4 / 3; }
.exp-media .icons { grid-column: 1 / -1; aspect-ratio: 4 / 3; max-width: 100%; background: var(--band); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: center; gap: 1.5rem; padding: 2rem; color: #6CB4EE; }
.exp-media .icons div { display: grid; justify-items: center; gap: 0.5rem; text-align: center; color: var(--on-band-muted); font-weight: 600; font-size: var(--step--1); }
.exp-media .icons svg { width: 2.6rem; height: 2.6rem; color: #6CB4EE; }
.exp-body { display: grid; gap: 1rem; min-width: 0; }
.exp-body h2 { font-size: var(--step-3); }
.exp-body > p { color: var(--muted); }
.checks { list-style: none; margin: 0.25rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.7rem 1.5rem; }
.checks li { position: relative; padding-left: 1.7rem; font-size: var(--step--1); min-width: 0; }
.checks li::before { content: ""; position: absolute; left: 0; top: 0.3em; width: 1.05rem; height: 1.05rem; border-radius: 50%; background: var(--accent-soft); }
.checks li::after { content: ""; position: absolute; left: 0.36rem; top: 0.48em; width: 0.28rem; height: 0.52rem; border: solid var(--accent); border-width: 0 2px 2px 0; transform: rotate(45deg); }
@media (max-width: 560px) { .checks { grid-template-columns: minmax(0, 1fr); } }

/* markets */
.markets { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.markets article { background: var(--card); border: 1px solid var(--line); display: grid; grid-template-rows: auto 1fr; min-width: 0; }
.markets img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; max-width: 100%; }
.markets .tx { padding: 0.9rem 1rem 1.1rem; display: grid; gap: 0.4rem; align-content: start; }
.markets h3 { font-size: 1.2rem; }
.markets ul { margin: 0; padding-left: 1.05rem; color: var(--muted); font-size: var(--step--1); }
@media (max-width: 1000px) { .markets { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 640px) { .markets { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 400px) { .markets { grid-template-columns: minmax(0, 1fr); } }

.gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.6rem; }
.gallery figure { margin: 0; display: grid; gap: 0.35rem; min-width: 0; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; max-width: 100%; }
.gallery figcaption { font-size: var(--step--1); color: var(--muted); }
@media (max-width: 800px) { .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* contact */
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
@media (max-width: 700px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }
.cc { background: var(--card); border: 1px solid var(--line); padding: 1.25rem 1.35rem; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.4rem 1rem; align-items: center; }
.cc .ic { grid-row: span 3; width: 3rem; height: 3rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; }
.cc .ic svg { width: 1.3rem; height: 1.3rem; }
.cc .lab { font: 600 var(--step--1) var(--font-display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.cc .val { font: 700 1.45rem var(--font-display); color: var(--ink); user-select: all; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.cc .acts { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.cc .acts a, .cc .acts button { font: 600 0.85rem var(--font-body); padding: 0.35rem 0.75rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); color: var(--accent); text-decoration: none; cursor: pointer; }
.cc .acts a:hover, .cc .acts button:hover { border-color: var(--accent); }

/* footer */
.site-footer { background: var(--band); color: var(--on-band-muted); font-size: var(--step--1); }
.site-footer .wrap { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 2rem; padding-block: 3rem 2rem; }
.site-footer img { height: 2.8rem; width: auto; margin-bottom: 0.75rem; }
.site-footer h4 { font: 600 0.85rem var(--font-display); letter-spacing: 0.14em; text-transform: uppercase; color: var(--on-band); margin: 0 0 0.6rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.site-footer a { color: var(--on-band-muted); text-decoration: none; }
.site-footer a:hover { color: var(--on-band); }
.site-footer .legal { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.25rem; }
@media (max-width: 760px) { .site-footer .wrap { grid-template-columns: minmax(0, 1fr); } }

/* single-file preview routing */
html.spa main[data-page] { display: none; }
html.spa main[data-page].on { display: block; }