/* ==========================================================================
   Impact Biosystem – feuille de style unique
   Identité : voir 00_Regles_identite_Impact_Biosystem.md
   Couleurs : Émeraude #00A88A (graphismes uniquement), Émeraude foncé #007E67
   (textes colorés, fonds avec texte blanc), Noir texte #231F20, Blanc #FFFFFF.
   Police unique : Nunito Sans (auto-hébergée, licence OFL).
   ========================================================================== */

@font-face {
  font-family: "Nunito Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 200 1000;
  src: url("../fonts/nunito-sans-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Nunito Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 200 1000;
  src: url("../fonts/nunito-sans-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --emeraude: #00A88A;
  --emeraude-fonce: #007E67;
  --emeraude-nuit: #00594A;
  --noir: #231F20;
  --gris: #5B5657;
  --blanc: #FFFFFF;
  --brume: #F2F8F6;
  --filet: #D7E9E4;
  --max: 1200px;
  --gutter: clamp(20px, 5vw, 48px);
  --radius: 6px;
  --font: "Nunito Sans", Arial, Helvetica, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.6;
  color: var(--noir);
  background: var(--blanc);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--emeraude-fonce); text-underline-offset: 3px; }
a:hover { color: var(--emeraude-nuit); }
:focus-visible { outline: 3px solid var(--emeraude); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 { line-height: 1.08; margin: 0; letter-spacing: -0.015em; }
h1 { font-weight: 800; font-size: clamp(44px, 6.4vw, 84px); }
h2 { font-weight: 800; font-size: clamp(32px, 4.4vw, 52px); }
h3 { font-weight: 700; font-size: 21px; line-height: 1.25; letter-spacing: 0; }
p { margin: 0 0 1em; }
.accent { color: var(--emeraude-fonce); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(72px, 10vw, 128px) 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--emeraude-fonce); margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--emeraude); }
.lead { font-size: clamp(19px, 1.6vw, 22px); line-height: 1.55; color: var(--gris); max-width: 40em; }
.section-head { max-width: 760px; margin-bottom: clamp(40px, 6vw, 64px); }
.section-head h2 { margin-bottom: 20px; }

.skip-link { position: absolute; left: -9999px; top: 8px; background: var(--emeraude-fonce); color: #fff; padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 8px; color: #fff; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 26px; border-radius: 999px;
  font: 700 17px/1 var(--font); text-decoration: none; cursor: pointer;
  border: 2px solid var(--emeraude-fonce); transition: background .2s, color .2s, border-color .2s;
}
.btn-primary { background: var(--emeraude-fonce); color: #fff; }
.btn-primary:hover { background: var(--emeraude-nuit); border-color: var(--emeraude-nuit); color: #fff; }
.btn-ghost { background: transparent; color: var(--emeraude-fonce); }
.btn-ghost:hover { background: var(--emeraude-fonce); color: #fff; }
.btn-light { background: #fff; color: var(--emeraude-fonce); border-color: #fff; }
.btn-light:hover { background: transparent; color: #fff; }
.btn svg { width: 18px; height: 18px; flex: none; }

/* ---------- En-tête ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--filet); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 24px; }
.brand { display: block; flex: none; }
.brand img { width: 168px; height: auto; }
.nav { display: flex; align-items: center; gap: 30px; margin-left: auto; margin-right: 12px; }
.nav-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--noir); text-decoration: none; font-weight: 600; font-size: 16px; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover { color: var(--emeraude-fonce); border-bottom-color: var(--emeraude); }
.header-tools { display: flex; align-items: center; gap: 8px; }

/* Sélecteur de langue (menu déroulant) */
.lang-menu { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px;
  background: #fff; border: 1px solid var(--filet); border-radius: 999px; cursor: pointer;
  font: 700 15px/1 var(--font); color: var(--noir);
}
.lang-btn:hover, .lang-btn[aria-expanded="true"] { border-color: var(--emeraude-fonce); color: var(--emeraude-fonce); }
.lang-btn svg { width: 18px; height: 18px; flex: none; }
.lang-btn .chev { width: 14px; height: 14px; transition: transform .2s; }
.lang-btn[aria-expanded="true"] .chev { transform: rotate(180deg); }
.lang-list {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 190px; margin: 0; padding: 6px;
  list-style: none; background: #fff; border: 1px solid var(--filet); border-radius: 10px;
  box-shadow: 0 16px 40px rgba(35,31,32,.12); z-index: 60;
}
.lang-list[hidden] { display: none; }
.lang-list a {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 11px 12px; border-radius: 6px; text-decoration: none; color: var(--noir); font-weight: 600; font-size: 16px;
}
.lang-list a:hover { background: var(--brume); color: var(--emeraude-fonce); }
.lang-list a[aria-current] { color: var(--emeraude-fonce); }
.lang-list a[aria-current]::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--emeraude); }
.lang-list abbr { text-decoration: none; font-size: 13px; color: var(--gris); font-weight: 700; }
.nav-toggle { display: none; background: none; border: 0; width: 48px; height: 48px; padding: 12px; cursor: pointer; color: var(--noir); }
.nav-toggle svg { width: 24px; height: 24px; }

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: 80px 0 auto 0; background: #fff; flex-direction: column; align-items: stretch;
    gap: 0; padding: 8px var(--gutter) 24px; border-bottom: 1px solid var(--filet);
    box-shadow: 0 20px 40px rgba(35,31,32,.08); display: none;
  }
  .nav.open { display: flex; }
  .nav-links { flex-direction: column; gap: 0; }
  .nav-links a { display: block; padding: 14px 0; border-bottom: 1px solid var(--filet); font-size: 18px; }
  .brand img { width: 150px; }
}

/* ---------- Hero ---------- */
.hero { padding: clamp(40px, 7vw, 88px) 0 clamp(56px, 7vw, 96px); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero h1 { margin-bottom: 28px; }
.hero .lead { margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-media { position: relative; }
.hero-media img { width: 100%; aspect-ratio: 4 / 4.4; object-fit: cover; border-radius: var(--radius); }
.hero-media figcaption { position: absolute; left: 16px; bottom: 16px; background: rgba(255,255,255,.92); padding: 6px 12px; border-radius: 4px; font-size: 13px; color: var(--gris); }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media img { aspect-ratio: 16 / 11; }
}

/* ---------- Chiffres ---------- */
.stats { border-top: 1px solid var(--filet); border-bottom: 1px solid var(--filet); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 36px 24px 34px 0; }
.stat + .stat { padding-left: 28px; border-left: 1px solid var(--filet); }
.stat-value { font-size: clamp(36px, 4vw, 52px); font-weight: 800; line-height: 1; color: var(--emeraude-fonce); letter-spacing: -0.02em; }
.stat-value small { font-size: .5em; font-weight: 700; margin-left: 4px; }
.stat-label { margin-top: 10px; font-size: 16px; color: var(--gris); line-height: 1.4; }
@media (max-width: 760px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat, .stat + .stat { padding: 26px 16px; border-left: 0; }
  .stat:nth-child(even) { border-left: 1px solid var(--filet); }
  .stat:nth-child(n+3) { border-top: 1px solid var(--filet); }
}

/* ---------- Bandeau motif (aucun texte par-dessus) ---------- */
.motif-band { height: clamp(120px, 15vw, 230px); background: url("../img/motif.svg") center 55% / cover no-repeat; }
.motif-band.blanc { height: clamp(90px, 9vw, 140px); background-image: url("../img/motif_blanc.svg"); background-position: center 20%; background-color: var(--emeraude-fonce); }

/* ---------- Domaines ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--filet); border: 2px solid var(--filet); border-radius: var(--radius); overflow: hidden; }
.card { background: #fff; padding: 36px 32px 38px; display: flex; flex-direction: column; gap: 14px; }
.card-icon { width: 56px; height: 40px; color: var(--emeraude); }
.card p { margin: 0; color: var(--gris); font-size: 17px; }
.card-num { font-size: 13px; font-weight: 800; letter-spacing: .14em; color: var(--emeraude-fonce); }
@media (max-width: 960px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .cards { grid-template-columns: 1fr; } }

/* ---------- Strates (signification du symbole) ---------- */
.strata { background: var(--brume); }
.strata-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(40px, 6vw, 96px); align-items: center; }
.strata-figure { position: relative; max-width: 460px; width: 100%; justify-self: center; }
.strata-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.strata-list li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--filet); align-items: start; }
.strata-list li:first-child { border-top: 1px solid var(--filet); }
.strata-list svg { width: 52px; height: 26px; color: var(--emeraude); margin-top: 3px; }
.strata-list strong { display: block; font-size: 18px; }
.strata-list span { color: var(--gris); font-size: 16px; }
@media (max-width: 860px) { .strata-grid { grid-template-columns: 1fr; } .strata-figure { max-width: 260px; } }

/* ---------- BioThermal HP ---------- */
.biothermal { background: var(--emeraude-fonce); color: #fff; }
.biothermal .eyebrow { color: #fff; }
.biothermal .eyebrow::before { background: #fff; }
.biothermal .lead { color: rgba(255,255,255,.9); }
.biothermal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 6vw, 88px); align-items: start; }
.biothermal h2 { margin-bottom: 24px; }
.check-list { list-style: none; padding: 0; margin: 0 0 36px; display: grid; gap: 14px; }
.check-list li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; font-size: 17px; line-height: 1.5; }
.check-list svg { width: 22px; height: 22px; margin-top: 2px; }
.biothermal-media img { border-radius: var(--radius); width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.patent { margin-top: 28px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.3); font-size: 16px; color: rgba(255,255,255,.92); }
.patent strong { display: block; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 6px; color: #fff; }
.biothermal-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.biothermal .btn-ghost { color: #fff; border-color: #fff; }
.biothermal .btn-ghost:hover { background: #fff; color: var(--emeraude-fonce); }
@media (max-width: 860px) { .biothermal-grid { grid-template-columns: 1fr; } }

/* ---------- À propos ---------- */
.about-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(36px, 6vw, 96px); align-items: start; }
.about-card { border-top: 3px solid var(--emeraude); padding-top: 28px; }
.about-card .name { font-size: 26px; font-weight: 800; line-height: 1.2; }
.about-card .title { color: var(--gris); margin: 6px 0 24px; }
.facts { list-style: none; margin: 0 0 28px; padding: 0; display: grid; gap: 10px; font-size: 16px; }
.facts li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; }
.facts svg { width: 18px; height: 18px; margin-top: 4px; color: var(--emeraude-fonce); }
.social { display: flex; gap: 12px; flex-wrap: wrap; }
.social a { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px; border: 1px solid var(--filet); border-radius: 999px; text-decoration: none; font-weight: 700; font-size: 15px; color: var(--noir); }
.social a:hover { border-color: var(--emeraude-fonce); color: var(--emeraude-fonce); }
.social svg { width: 18px; height: 18px; }
.about-text h2 { margin-bottom: 28px; }
.about-text p:not(.eyebrow) { font-size: 18px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; padding: 0; list-style: none; }
.about-tags li { background: var(--brume); color: var(--emeraude-nuit); font-weight: 700; font-size: 14px; padding: 7px 14px; border-radius: 999px; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } .about-card { order: 2; } }

/* ---------- Contact ---------- */
.contact { border-top: 1px solid var(--filet); }
.contact-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(36px, 6vw, 96px); align-items: center; }
.contact h2 { margin-bottom: 20px; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; background: var(--filet); border: 2px solid var(--filet); border-radius: var(--radius); overflow: hidden; }
.contact-list a, .contact-list div { display: grid; grid-template-columns: 48px 1fr; gap: 16px; align-items: center; padding: 22px 24px; background: #fff; text-decoration: none; color: var(--noir); }
.contact-list a:hover { background: var(--brume); }
.contact-list .ic { width: 48px; height: 48px; border-radius: 50%; background: var(--brume); display: grid; place-items: center; color: var(--emeraude-fonce); }
.contact-list .ic svg { width: 22px; height: 22px; }
.contact-list small { display: block; font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--gris); }
.contact-list b { font-size: 19px; font-weight: 700; word-break: break-word; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- Pied de page ---------- */
.site-footer { background: var(--emeraude-fonce); color: #fff; font-size: 15px; }
.site-footer a { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 32px; padding: 56px 0 40px; }
.footer-grid img { width: 180px; margin-bottom: 18px; }
.footer-grid h4 { margin: 0 0 12px; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; font-weight: 800; }
.footer-grid p { margin: 0; line-height: 1.7; color: rgba(255,255,255,.92); }
.footer-legal { border-top: 1px solid rgba(255,255,255,.28); padding: 22px 0 30px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: 14px; color: rgba(255,255,255,.88); }
.footer-legal details summary { cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.footer-legal details[open] { flex-basis: 100%; }
.footer-legal details div { margin-top: 12px; max-width: 760px; line-height: 1.6; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Apparition douce ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }
.no-js .reveal { opacity: 1; transform: none; }

/* ==========================================================================
   Domaines par couches – du haut (atmosphère) vers le bas (échanges)
   ========================================================================== */
.layers-intro { display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: end; margin-bottom: clamp(48px, 7vw, 80px); }
.layers-intro .lead { margin: 0; }
.layers-intro-symbol { justify-self: end; width: 100%; max-width: 220px; }
@media (max-width: 860px) { .layers-intro { grid-template-columns: 1fr; } .layers-intro-symbol { justify-self: start; max-width: 140px; order: -1; } }

.layers { list-style: none; margin: 0; padding: 0; counter-reset: layer; }
.layer {
  display: grid; grid-template-columns: 64px 1fr 1.05fr; gap: clamp(20px, 4vw, 56px);
  padding: clamp(32px, 4.5vw, 52px) 0; border-top: 1px solid var(--filet); align-items: start;
}
.layer:last-child { border-bottom: 1px solid var(--filet); }
.layer-rail { display: flex; flex-direction: column; align-items: center; gap: 10px; padding-top: 4px; }
.layer-rail svg { width: 52px; height: 26px; color: var(--emeraude); }
.layer-rail span { font-size: 13px; font-weight: 800; letter-spacing: .1em; color: var(--emeraude-fonce); }
.layer-meta { font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--emeraude-fonce); margin-bottom: 6px; }
.layer-meaning { font-size: 15px; color: var(--gris); margin-bottom: 18px; font-style: italic; }
.layer h3 { font-size: clamp(24px, 2.4vw, 30px); font-weight: 800; letter-spacing: -0.01em; margin-bottom: 14px; }
.layer p { color: var(--gris); font-size: 17px; }
.layer .tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.layer .tags li { background: var(--brume); color: var(--emeraude-nuit); font-weight: 700; font-size: 13px; padding: 6px 12px; border-radius: 999px; }
.layer-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-weight: 700; text-decoration: none; }
.layer-link svg { width: 18px; height: 18px; }
.layer-visual { margin: 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 10; background: var(--brume); }
.layer-visual img { width: 100%; height: 100%; object-fit: cover; }
/* Visuel provisoire : la rangée du motif correspondant à la couche (à remplacer par une photo) */
.layer-visual.motif { background: var(--brume) url("../img/motif.svg") center var(--y) / auto 600% no-repeat; }
.layer-visual.motif[data-layer="1"] { --y: 3%; }
.layer-visual.motif[data-layer="2"] { --y: 22.6%; }
.layer-visual.motif[data-layer="3"] { --y: 41.6%; }
.layer-visual.motif[data-layer="4"] { --y: 59.2%; }
.layer-visual.motif[data-layer="5"] { --y: 78.1%; }
.layer-visual.motif[data-layer="6"] { --y: 96.7%; }
@media (max-width: 960px) {
  .layer { grid-template-columns: 52px 1fr; }
  .layer-visual { grid-column: 2; }
}
@media (max-width: 560px) {
  .layer { grid-template-columns: 1fr; gap: 16px; }
  .layer-rail { flex-direction: row; justify-content: flex-start; }
  .layer-visual { grid-column: 1; }
}

.transversal {
  margin-top: clamp(40px, 6vw, 64px); padding: clamp(28px, 4vw, 40px); border-radius: var(--radius);
  background: var(--brume); display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: center;
}
.transversal .ic { width: 64px; height: 64px; border-radius: 50%; background: #fff; display: grid; place-items: center; color: var(--emeraude-fonce); }
.transversal .ic svg { width: 30px; height: 30px; }
.transversal h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.transversal p { margin: 0; color: var(--gris); font-size: 17px; }
@media (max-width: 560px) { .transversal { grid-template-columns: 1fr; } }

/* Spécialisation (À propos) */
.expertise-box { margin: 28px 0; padding: 24px 26px; border-left: 0; border-radius: var(--radius); background: var(--brume); }
.expertise-box strong { display: block; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--emeraude-fonce); margin-bottom: 8px; }
.expertise-box p { margin: 0; color: var(--noir) !important; }
/* Schémas (fond blanc, image entière) */
.layer-visual.diagram { background: #fff; border: 1px solid var(--filet); padding: 14px; }
.layer-visual.diagram img { object-fit: contain; }

/* Encadré médiation scientifique (À propos) */
.partner-box { display: grid; grid-template-columns: 56px 1fr; gap: 18px; align-items: start; margin: 28px 0 8px; padding: 24px 26px; border: 2px solid var(--emeraude); border-radius: var(--radius); background: #fff; }
.partner-box .ic { width: 56px; height: 56px; border-radius: 50%; background: var(--brume); display: grid; place-items: center; color: var(--emeraude-fonce); }
.partner-box .ic svg { width: 26px; height: 26px; }
.partner-box strong { display: block; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--emeraude-fonce); margin-bottom: 4px; }
.partner-box .partner-name { font-size: 22px; font-weight: 800; color: var(--noir); margin-bottom: 8px; line-height: 1.2; }
.partner-box p { margin: 0; color: var(--gris) !important; font-size: 17px !important; }
@media (max-width: 520px) { .partner-box { grid-template-columns: 1fr; } }

/* ==========================================================================
   Projets réalisés (galerie chronologique)
   ========================================================================== */
.projects { background: var(--brume); }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; list-style: none; margin: 0; padding: 0; }
.project { margin: 0; background: #fff; border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.project-img { aspect-ratio: 4 / 3; background: #fff; overflow: hidden; }
.project-img img { width: 100%; height: 100%; object-fit: cover; }
.project-img.doc { padding: 10px; border-bottom: 1px solid var(--filet); }
.project-img.doc img { object-fit: contain; }
.project figcaption { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 6px; }
.project .year { font-size: 13px; font-weight: 800; letter-spacing: .12em; color: var(--emeraude-fonce); font-variant-numeric: tabular-nums; }
.project .cap { font-size: 16px; line-height: 1.45; color: var(--noir); font-weight: 600; }
@media (max-width: 960px) { .project-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .project-grid { grid-template-columns: 1fr; gap: 20px; } }
/* Photos affichées entières (sans recadrage) */
.project-img.natural { aspect-ratio: auto; }
.project-img.natural img { height: auto; object-fit: initial; }
/* Photo verticale réduite dans le cadre 4:3 (proportions conservées) */
.project-img.fit img { object-fit: contain; background: #fff; }
.project .value { font-size: 15px; line-height: 1.45; color: var(--gris); display: grid; grid-template-columns: 18px 1fr; gap: 4px; margin-top: 2px; }
.project .value::before { content: "→"; color: var(--emeraude-fonce); font-weight: 800; }
.partner-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin-top: 14px; }
.partner-actions .btn { min-height: 44px; padding: 0 18px; font-size: 15px; }
.partner-actions .ide { font-size: 14px; color: var(--gris); }