:root {
  --paper: #f3f3f1;
  --paper-alt: #e7e6e1;
  --paper-raised: #fbfaf9;
  --line: rgba(32, 32, 32, 0.13);
  --line-strong: rgba(32, 32, 32, 0.28);
  --ink: #202020;
  --ink-soft: #5c5c58;
  --ink-faint: #8d8c87;
  --accent: #b34526;
  --accent-strong: #8a331b;
  --accent-soft: #f0dad2;
  --cool: #3e5c68;
  --cool-strong: #2b434c;
  --cool-soft: #dde6e8;
  --sage: #55705f;
  --sage-strong: #3a4f42;
  --sage-soft: #e0e8e1;
  --contour: rgba(62, 92, 104, 0.16);
  --shadow: rgba(32, 32, 32, 0.10);
  --focus: #8a331b;
}
/* Thème volontairement fixe en light — pas d'adaptation au thème système/visiteur. */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", "Segoe UI Variable", system-ui, -apple-system, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
.mono {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
}
.eyebrow {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* ---------- SITE HEADER ---------- */
.site-header {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  padding: clamp(16px, 2.4vw, 26px) clamp(20px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}
.site-header .hero-kicker { margin: 0; grid-column: 2; justify-self: center; }

.lang-switch {
  grid-column: 3;
  justify-self: end;
  margin: 0;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: .4em;
}
.lang-switch .lang-current {
  color: var(--accent-strong);
  font-weight: 700;
  background: var(--accent-soft);
  padding: .15em .55em;
  border-radius: 999px;
}
.lang-switch a { color: var(--ink-soft); text-decoration: none; }
.lang-switch a:hover { color: var(--accent); text-decoration: underline; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  /* blueprint grid */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.55;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, black 40%, transparent 92%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, black 40%, transparent 92%);
}
.hero-graph {
  position: absolute;
  right: -8vw;
  top: -6vh;
  width: 68vw;
  height: 68vw;
  max-width: 980px;
  max-height: 980px;
  z-index: 1;
  pointer-events: none;
}
.hero-graph .mesh-edge {
  stroke: var(--contour);
  stroke-width: 1.5;
  fill: none;
}
.hero-graph .mesh-node {
  fill: var(--ink-faint);
}
.hero-graph .route {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
  stroke-dasharray: 1140;
  stroke-dashoffset: 1140;
  animation: route-draw 3.2s 0.4s linear forwards;
}
.hero-graph .route-node {
  fill: var(--ink-faint);
  animation: node-light 0.3s ease-out forwards;
}
.hero-graph .route-end {
  fill: var(--paper-raised);
  stroke: var(--ink-faint);
  stroke-width: 2;
  animation: node-ring-light 0.3s ease-out forwards;
  animation-delay: 3.6s;
}
@keyframes route-draw {
  to { stroke-dashoffset: 0; }
}
@keyframes node-light {
  from { fill: var(--ink-faint); }
  to { fill: var(--accent); }
}
@keyframes node-ring-light {
  from { stroke: var(--ink-faint); }
  to { stroke: var(--accent); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-graph .route { animation: none; stroke-dashoffset: 0; }
  .hero-graph .route-node { animation: none; fill: var(--accent); }
  .hero-graph .route-end { animation: none; stroke: var(--accent); }
}
.hero-topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: clamp(20px, 3.2vw, 36px) clamp(20px, 5vw, 64px) 0;
}
.hero-nav {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 3px;
  color: var(--ink-soft);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.hero-nav:hover { color: var(--accent-strong); border-color: var(--accent); }

.hero-main {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 5vw, 64px);
  max-width: 1180px;
}
.hero-kicker {
  margin: 0 0 18px;
  font-size: 0.92rem;
}
.hero-name {
  margin: 0 0 clamp(20px, 3.5vw, 40px);
  font-family: "Segoe UI", "Segoe UI Variable", system-ui, -apple-system, Roboto, sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.06;
  font-size: clamp(2.35rem, 6vw, 5.4rem);
}
.slogan {
  margin: 0;
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.06;
  font-size: clamp(2.35rem, 6vw, 5.4rem);
  color: var(--ink-soft);
  text-wrap: balance;
  max-width: 15ch;
}
.slogan .ln { display: block; }
.slogan em {
  font-style: italic;
  font-weight: 400;
  color: var(--ink-soft);
}
.slogan .accent-word {
  font-style: italic;
  color: var(--accent-strong);
}
.hero-intro {
  margin: 28px 0 0;
  max-width: 46ch;
  font-size: clamp(1.02rem, 1.5vw, 1.28rem);
  line-height: 1.55;
  color: var(--ink-soft);
}
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
  padding: 0;
  list-style: none;
}
.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  padding: 15px 24px;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}
.hero-links a:hover { border-color: var(--accent); color: var(--accent-strong); transform: translateY(-1px); }
.link-ico {
  flex: none;
  width: 20px;
  height: 20px;
  fill: currentColor;
}
.hero-kicker .fx-cyber { color: var(--cool-strong); }
.hero-kicker .fx-infra { color: var(--sage-strong); }
.hero-kicker .fx-montagne { color: var(--accent-strong); }
.hero-kicker a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.hero-kicker a:hover,
.hero-kicker a:focus-visible { border-bottom-color: currentColor; }

.hero-foot {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding: 0 0 clamp(22px, 3.5vw, 40px);
}
.scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink-faint);
}
.scroll-cue .rail {
  width: 1px;
  height: 40px;
  background: var(--line-strong);
  position: relative;
  overflow: hidden;
}
.scroll-cue .rail::after {
  content: "";
  position: absolute;
  left: -1.5px;
  top: -12px;
  width: 4px;
  height: 12px;
  border-radius: 2px;
  background: var(--accent);
  animation: cue-drop 1.8s ease-in-out infinite;
}
@keyframes cue-drop {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateY(52px); opacity: 0; }
}
.scroll-cue span {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- FACETS ---------- */
.facets {
  padding: clamp(64px, 10vw, 120px) 0 clamp(70px, 9vw, 110px);
  background: var(--paper);
}
.facets-head {
  padding: 0 clamp(20px, 5vw, 64px);
  max-width: 1180px;
  margin: 0 auto;
  text-align: center;
}
.facets-head h2 {
  margin: 0;
  font-weight: 400;
  font-size: clamp(1.35rem, 3.6vw, 2.9rem);
  white-space: nowrap;
  color: var(--ink-soft);
}
.facets-head h2 .accent-word {
  color: var(--accent-strong);
}
.facets-sub {
  margin: 12px 0 0;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.carousel {
  position: relative;
  margin-top: 48px;
}
.carousel-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 380px));
  justify-content: center;
  gap: clamp(18px, 2.4vw, 28px);
  padding: 6px clamp(20px, 5vw, 64px) 10px;
}
@media (max-width: 900px) {
  .carousel-track {
    grid-template-columns: minmax(0, 420px);
    justify-items: center;
  }
}

.card {
  width: 100%;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: var(--card-accent, var(--accent)); }
#facet-cyber { --card-accent: var(--cool); --card-accent-dark: var(--cool-strong); --card-tag-bg: var(--cool-soft); }
#facet-infra { --card-accent: var(--sage); --card-accent-dark: var(--sage-strong); --card-tag-bg: var(--sage-soft); }
#facet-montagne { --card-accent: var(--accent); --card-accent-dark: var(--accent-strong); --card-tag-bg: var(--accent-soft); }

.card-body {
  padding: 22px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.card-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.card-icon {
  flex: none;
  width: 52px;
  height: 52px;
  border: 1.4px solid var(--card-accent, var(--ink-faint));
  display: grid;
  place-items: center;
}
.card-icon svg { width: 26px; height: 26px; stroke: var(--card-accent, var(--ink-faint)); }
.card-icon svg polygon { fill: var(--card-accent, var(--ink-faint)); }
.card-head-text { min-width: 0; }
.card-domain {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--card-accent-dark, var(--accent-strong));
}
.card-title-row {
  display: flex;
  align-items: baseline;
  gap: 9px;
  flex-wrap: wrap;
}
.badge {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  border: 1px solid var(--card-accent, var(--cool));
  color: var(--card-accent, var(--cool));
  padding: 2px 7px;
}
.card-title {
  margin: 0;
  font-weight: 400;
  font-size: 1.4rem;
}
.card-tagline {
  margin: 0;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.card-desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--ink-soft);
  flex: 1;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 4px;
}
.tag-row span {
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  background: var(--card-tag-bg, var(--accent-soft));
  color: var(--card-accent-dark, var(--accent-strong));
  padding: 4px 8px;
}

/* ---------- FOOTER ---------- */
.site-foot {
  border-top: 1px solid var(--line);
  padding: 32px clamp(20px, 5vw, 64px) 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  align-items: center;
  justify-content: space-between;
}
.foot-id { display: flex; align-items: center; gap: 12px; }
.foot-mark {
  flex: none;
  width: 32px;
  height: 32px;
  display: block;
}
.foot-id p { margin: 0; font-size: 0.86rem; color: var(--ink-soft); }
.foot-contact {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.78rem;
}
.foot-contact a { text-decoration: none; color: var(--ink-soft); border-bottom: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease; }
.foot-contact a:hover { color: var(--accent-strong); border-color: var(--accent); }
.foot-copy {
  width: 100%;
  font-size: 0.72rem;
  color: var(--ink-faint);
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

@media (max-width: 640px) {
  .hero-topbar { padding-top: 18px; }
  .hero-graph { right: -32vw; top: -10vh; width: 100vw; height: 100vw; }
  .site-foot { flex-direction: column; align-items: flex-start; }
}

/* ---------- FACET PAGE ---------- */
.subpage-header {
  padding: clamp(28px, 4vw, 48px) clamp(20px, 5vw, 64px) clamp(16px, 2vw, 24px);
  max-width: 1180px;
  margin: 0 auto;
}
.subpage-header .hero-nav {
  display: inline-block;
  margin-bottom: 28px;
}
.subpage-eyebrow {
  margin: 0 0 10px;
  color: var(--card-accent-dark, var(--accent-strong));
}
.subpage-title {
  margin: 0 0 10px;
  font-weight: 400;
  letter-spacing: -0.01em;
  font-size: clamp(2rem, 5vw, 3.4rem);
}
.subpage-tagline {
  margin: 0;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
}
.subpage-body {
  padding: clamp(20px, 3vw, 32px) clamp(20px, 5vw, 64px) clamp(64px, 8vw, 96px);
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.subpage-text {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--ink-soft);
}
.subpage-text p { margin: 0 0 1.2em; }
.subpage-text p:last-child { margin-bottom: 0; }
.subpage-text .accent-word {
  font-style: italic;
  color: var(--card-accent-dark, var(--accent-strong));
}
.subpage-text .code-safe { color: var(--sage-strong); }
.subpage-text .code-danger { color: var(--accent-strong); }
.subpage-text ul {
  margin: 0 0 1.2em;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.subpage-text ul:last-child { margin-bottom: 0; }
.subpage-text li {
  position: relative;
  padding-left: 1.3em;
}
.subpage-text li::before {
  content: "·";
  position: absolute;
  left: 0.2em;
  line-height: 1.15;
  font-size: 1.3em;
  font-weight: 700;
  color: var(--card-accent-dark, var(--accent-strong));
}
.subpage-text h2 {
  margin: 2.2em 0 0.7em;
  font-weight: 500;
  font-size: 1.28rem;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.subpage-text h2:first-child { margin-top: 0; }
.subpage-text blockquote {
  margin: 0 0 1.2em;
  padding: 16px 20px;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--card-accent, var(--accent));
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink);
}
.subpage-text blockquote p { margin: 0; }
.subpage-text-sep {
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.subpage-lede {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--card-accent, var(--accent));
  padding: clamp(20px, 3vw, 30px) clamp(22px, 3.5vw, 34px);
}
.subpage-lede p { margin: 0 0 1.2em; }
.subpage-lede p:last-child { margin-bottom: 0; }
.subpage-lede-highlight {
  font-size: 1.22rem;
  font-weight: 600;
  color: var(--ink);
}
.subpage-achievements-groups {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 68ch;
}
.subpage-group-title {
  margin: 0 0 14px;
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.96rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--card-accent-dark, var(--accent-strong));
}
.subpage-group-title + .subpage-group-subtitle {
  margin-top: -10px;
}
.subpage-group-subtitle {
  margin: 0 0 14px;
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  color: var(--ink-faint);
}
.subpage-achievements {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.subpage-achievements li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--ink-soft);
}
.subpage-achievements li .mono {
  flex: none;
  font-size: 0.78rem;
  color: var(--card-accent-dark, var(--accent-strong));
}
.achievement-bullet {
  flex: none;
  width: 17px;
  height: 17px;
  margin-top: 0.15em;
  color: var(--card-accent-dark, var(--accent-strong));
  stroke: currentColor;
}
.achievement-body { display: block; }
.achievement-detail {
  display: block;
  margin-top: 2px;
  font-style: italic;
  font-size: 0.88rem;
  color: var(--ink-faint);
}
.stat-figure {
  font-weight: 700;
  color: var(--card-accent-dark, var(--accent-strong));
}
.share-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--line);
}
.share-label {
  margin: 0;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.share-links {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.share-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper-raised);
  color: var(--ink-soft);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.share-link:hover { border-color: var(--accent); color: var(--accent-strong); transform: translateY(-1px); }
.share-link .link-ico { width: 17px; height: 17px; }
.subpage-crosslinks {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-family: Consolas, "Cascadia Code", "SF Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.subpage-crosslinks a {
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.subpage-crosslinks a:hover { color: var(--accent-strong); border-color: var(--accent); }
.subpage-cta {
  margin-top: 0;
  justify-content: center;
}
.subpage-header .tag-row { margin-top: 22px; }
.article-date {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--ink-faint);
}

/* ---------- ARTICLES INDEX ---------- */
.articles-index {
  padding: clamp(24px, 4vw, 40px) 0 clamp(70px, 9vw, 110px);
  background: var(--paper);
}
.article-list {
  list-style: none;
  margin: 48px auto 0;
  padding: 0 clamp(20px, 5vw, 64px);
  max-width: 780px;
  display: flex;
  flex-direction: column;
}
.article-entry {
  border-top: 1px solid var(--line);
}
.article-entry:last-child {
  border-bottom: 1px solid var(--line);
}
.article-entry a {
  display: block;
  padding: 20px 4px;
  text-decoration: none;
  transition: border-color 0.2s ease;
}
.article-entry-date {
  margin: 0 0 6px;
  font-size: 0.72rem;
  color: var(--ink-faint);
}
.article-entry-title {
  margin: 0 0 4px;
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--ink);
}
.article-entry-tagline {
  margin: 0;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.article-entry a:hover .article-entry-title { color: var(--accent-strong); }