/* Layout : grille de fiche technique, libellé de section à gauche, contenu à droite ; fond isométrique à 30° repris du logo. */
:root {
  color-scheme: light;
  --paper: #fbfcfd;
  --ink: #0d2236;
  --muted: #4c6075;
  --navy: #0b4a7f;
  --blue: #1074c6;
  --sky: #78bbf5;
  --pale: #e4f0fb;
  --line: #d6e1ec;
  --display: "Saira Semi Condensed", "Arial Narrow", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --wrap: 72rem;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
img, svg { max-width: 100%; display: block; }
a { color: var(--blue); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { color: var(--navy); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* En-tête */
.top { position: relative; z-index: 5; background: var(--paper); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1rem; }
.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--navy); text-decoration: none; }
.brand img { width: 2rem; height: auto; }
.brand span { font: 600 1.05rem/1 var(--display); letter-spacing: 0.32em; text-transform: uppercase; }
.top nav { display: flex; align-items: center; gap: 1.5rem; font-size: 0.9375rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--navy); }
.top nav .lang { font: 500 0.8125rem/1 var(--mono); letter-spacing: 0.06em; color: var(--navy); border: 1px solid var(--line); border-radius: 2px; padding: 0.4rem 0.5rem; }
.top nav .lang:hover { border-color: var(--navy); }
.menu-btn { display: none; align-items: center; gap: 0.5rem; font: 500 0.9375rem/1 var(--body); color: var(--navy); background: none; border: 1px solid var(--line); border-radius: 3px; padding: 0.55rem 0.75rem; cursor: pointer; }
.menu-btn i { position: relative; display: block; width: 1rem; height: 2px; background: currentColor; }
.menu-btn i::before, .menu-btn i::after { content: ""; position: absolute; left: 0; width: 100%; height: 2px; background: currentColor; transition: transform 0.15s; }
.menu-btn i::before { top: -5px; }
.menu-btn i::after { top: 5px; }
.top.open .menu-btn i { background: transparent; }
.top.open .menu-btn i::before { transform: translateY(5px) rotate(45deg); }
.top.open .menu-btn i::after { transform: translateY(-5px) rotate(-45deg); }

/* Conférence à venir (masquée par le script le lendemain de la date) */
.talk { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 0.6rem; margin: 0 0 1.5rem; padding: 0.5rem 0.75rem; background: var(--pale); border-radius: 2px; color: var(--navy); text-decoration: none; font-size: 0.9375rem; }
.talk b { font: 500 0.75rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--blue); }
.talk:hover { color: var(--blue); }
.soon { font: 500 0.75rem/1 var(--mono); color: var(--blue); background: var(--pale); padding: 0.2rem 0.4rem; border-radius: 2px; margin-left: 0.35rem; white-space: nowrap; }

/* Ouverture */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 0 45%;
  background:
    repeating-linear-gradient(30deg, transparent 0 39px, var(--line) 39px 40px),
    repeating-linear-gradient(150deg, transparent 0 39px, var(--line) 39px 40px);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 35%);
  mask-image: linear-gradient(to right, transparent, #000 35%);
  opacity: 0.7;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 3rem; align-items: center; padding-block: 5rem 4.5rem; }
.kicker { font: 500 0.8125rem/1.4 var(--mono); color: var(--blue); letter-spacing: 0.02em; margin: 0 0 1.25rem; }
h1 {
  font: 700 clamp(2rem, 4.6vw, 3.6rem)/1.04 var(--display);
  letter-spacing: -0.01em;
  color: var(--navy);
  margin: 0;
  text-wrap: balance;
}
h1 span { display: block; }
h1 em { font-style: normal; color: var(--sky); }
.lede { max-width: 36rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.1875rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; align-items: center; margin-top: 2.25rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: var(--navy); color: #fff; text-decoration: none;
  font: 500 1rem/1 var(--body);
  padding: 0.95rem 1.35rem;
  border-radius: 3px;
}
.btn:hover { background: var(--blue); color: #fff; }
.btn svg { width: 1rem; height: 1rem; }
.facts { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; margin: 0; padding: 0; list-style: none; font: 400 0.875rem/1.5 var(--mono); color: var(--muted); }
.facts li + li::before { content: "/"; color: var(--sky); margin-right: 1.25rem; }
.mark { justify-self: end; width: min(100%, 21rem); height: auto; }

/* Sections en fiche */
.sheet { border-bottom: 1px solid var(--line); }
.sheet .wrap { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: 2.5rem; padding-block: 4.5rem; }
.label { font: 500 0.8125rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--blue); margin: 0.5rem 0 0; }
h2 { font: 600 clamp(1.75rem, 3vw, 2.3rem)/1.12 var(--display); color: var(--navy); margin: 0 0 2.5rem; max-width: 34ch; text-wrap: balance; }
h3 { font: 600 1.3rem/1.2 var(--display); color: var(--ink); margin: 0 0 0.5rem; letter-spacing: 0.01em; }
p { margin: 0; }

.services { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 2px solid var(--navy); }
.services article { padding: 1.75rem 2rem 2rem 0; border-bottom: 1px solid var(--line); }
.services article:nth-child(even) { padding-left: 2rem; padding-right: 0; border-left: 1px solid var(--line); }
.services p { color: var(--muted); max-width: 32rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.tags li { font: 400 0.8125rem/1 var(--mono); color: var(--navy); background: var(--pale); padding: 0.4rem 0.55rem; border-radius: 2px; }

/* Parcours */
.timeline { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--navy); }
.timeline li { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: 1.5rem; padding-block: 1.4rem; border-bottom: 1px solid var(--line); }
.when { font: 400 0.875rem/1.7 var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.role { font-weight: 600; }
.org { color: var(--navy); }
.timeline p { color: var(--muted); margin-top: 0.35rem; max-width: 40rem; }
.timeline p + p { margin-top: 0.5rem; }

.side-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; margin-top: 3rem; }
.side-notes h3 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--navy); }
.side-notes ul { margin: 0.75rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.6rem; color: var(--muted); }
.side-notes li { padding-left: 1.1rem; position: relative; }
.side-notes li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 0.45rem; height: 0.45rem; background: var(--sky); transform: rotate(30deg) skewX(-30deg); }

/* Contact */
.contact { background: var(--navy); color: #dcecfb; }
.contact .wrap { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: 2.5rem; padding-block: 4.5rem; }
.contact .label { color: var(--sky); }
.contact h2 { color: #fff; margin-bottom: 1.25rem; }
.contact p { max-width: 38rem; }
.mail-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem; margin-top: 2rem; }
.mail { font: 500 clamp(1.15rem, 2.6vw, 1.6rem)/1.3 var(--mono); color: #fff; text-decoration: none; border-bottom: 1px solid var(--sky); overflow-wrap: anywhere; }
.mail:hover { color: var(--sky); }
.copy { font: 500 0.875rem/1 var(--body); color: var(--navy); background: var(--sky); border: 0; border-radius: 3px; padding: 0.6rem 0.9rem; cursor: pointer; }
.copy:hover { background: #fff; }
.contact .links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; margin-top: 1.75rem; font-size: 0.9375rem; }
.contact .links a { color: #fff; }

footer { font: 400 0.8125rem/1.6 var(--mono); color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; padding-block: 1.75rem; }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; padding-block: 3.5rem 3rem; gap: 2.5rem; }
  .hero::before { inset: 45% 0 0 0; -webkit-mask-image: linear-gradient(to bottom, transparent, #000 40%); mask-image: linear-gradient(to bottom, transparent, #000 40%); }
  .mark { justify-self: start; width: 7rem; grid-row: 1; }
  .sheet .wrap, .contact .wrap { grid-template-columns: 1fr; gap: 1rem; padding-block: 3.5rem; }
  .services { grid-template-columns: 1fr; }
  .services article, .services article:nth-child(even) { padding: 1.5rem 0 1.75rem; border-left: 0; }
  .side-notes { grid-template-columns: 1fr; gap: 2rem; }
}
/* Menu mobile : bouton, puis panneau sous l'en-tête (sans script, les liens restent visibles et passent à la ligne) */
@media (max-width: 720px) {
  .top .wrap { flex-wrap: wrap; }
  .top nav { flex-wrap: wrap; gap: 0.5rem 1.25rem; }
  .js .menu-btn { display: inline-flex; }
  .js .top nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px -16px rgba(13, 34, 54, 0.35);
    padding-bottom: 0.75rem;
    padding-left: max(20px, env(safe-area-inset-left, 0px));
    padding-right: max(20px, env(safe-area-inset-right, 0px));
  }
  .js .top:not(.open) nav { display: none; }
  .js .top nav a { font-size: 1.0625rem; color: var(--ink); padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
  .js .top nav .lang { align-self: flex-start; margin-top: 1rem; font-size: 0.8125rem; padding: 0.5rem 0.6rem; border: 1px solid var(--line); }
}@media (max-width: 560px) {
  .brand span { font-size: 0.95rem; letter-spacing: 0.24em; }
  .timeline li { grid-template-columns: 1fr; gap: 0.25rem; }
  body { font-size: 1rem; }
  .lede { font-size: 1.0625rem; }
}