* {
  box-sizing: border-box;
}

:root {
  --bg: #38435c;
  --bg-deep: #0a0c0d;
  --panel: #171b1e;
  --panel-soft: #1c2226;
  --text: #f4f7f8;
  --muted: #aeb8bd;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #d7e65a;
  --dark: #111416;
  --max: 1240px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  padding: 0.65rem 0.8rem;
  background: var(--accent);
  color: var(--dark);
  font-weight: 900;
}

.skip-link:focus {
  transform: none;
}

.info-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.8rem clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
  background: rgba(10, 12, 13, 0.92);
  backdrop-filter: blur(14px);
}

.info-brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border-left: 3px solid var(--accent);
  padding: 0.35rem 0.75rem 0.35rem 0.6rem;
  background: rgba(0, 0, 0, 0.36);
  text-decoration: none;
}

.info-brand img {
  width: 52px;
  height: auto;
}

.info-brand-copy {
  display: grid;
  gap: 0.18rem;
}

.info-brand-copy strong {
  font-size: 1.35rem;
  font-weight: 950;
  letter-spacing: -0.045em;
  line-height: 1;
}

.info-brand-copy strong span {
  color: var(--accent);
}

.info-brand-copy small {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 650;
}

.info-header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}


.info-language-switch {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
}

.info-language-switch a {
  min-width: 2rem;
  padding: 0.35rem 0.42rem;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 900;
  line-height: 1;
  text-align: center;
  text-decoration: none;
}

.info-language-switch a:hover,
.info-language-switch a.is-active {
  background: var(--accent);
  color: var(--dark);
}

.info-beta,
.info-back {
  padding: 0.55rem 0.72rem;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.07em;
  line-height: 1;
  text-transform: uppercase;
}

.info-beta {
  background: var(--accent);
  color: var(--dark);
}

.info-back {
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
}

.info-back:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.info-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 10vw, 9rem) 1.25rem;
  background:
    linear-gradient(90deg, rgba(10, 12, 13, 0.98) 0%, rgba(10, 12, 13, 0.86) 50%, rgba(10, 12, 13, 0.5) 100%),
    radial-gradient(circle at 76% 35%, rgba(215, 230, 90, 0.22), transparent 24%),
    repeating-linear-gradient(115deg, transparent 0 42px, rgba(255, 255, 255, 0.025) 42px 43px),
    #172027;
}

.info-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 70%, var(--bg));
}

.info-hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.info-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.info-hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.8rem, 8vw, 6.4rem);
  font-weight: 950;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.info-lead {
  max-width: 830px;
  margin: 1.6rem 0 0;
  color: #d7dee1;
  font-size: clamp(1rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.info-section {
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.info-section--statement {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
}

.observation-statement {
  border-left: 5px solid var(--accent);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--accent);
  color: var(--dark);
}

.observation-statement .info-eyebrow {
  color: rgba(17, 20, 22, 0.68);
}

.observation-statement h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  letter-spacing: -0.045em;
  line-height: 1;
}

.observation-statement p:last-child {
  max-width: 950px;
  margin: 1rem 0 0;
  font-size: 1.02rem;
  font-weight: 650;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 2rem;
}

.section-heading h2,
.limits-panel h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.2rem);
  letter-spacing: -0.05em;
  line-height: 1;
}

.section-heading > p:last-child {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.truth-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.truth-card {
  min-height: 100%;
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent);
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--panel);
}

.truth-card--modelled {
  border-top-color: #7ca6bf;
}

.truth-tag,
.source-code {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.truth-card--modelled .truth-tag {
  color: #9ac5df;
}

.truth-card h3 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.15;
}

.truth-card p,
.truth-card li {
  color: var(--muted);
}

.truth-card ul {
  margin: 1.2rem 0 0;
  padding-left: 1.2rem;
}

.info-section--dark {
  width: 100%;
  max-width: none;
  padding-right: max(1.25rem, calc((100vw - var(--max)) / 2));
  padding-left: max(1.25rem, calc((100vw - var(--max)) / 2));
  background: var(--bg-deep);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.source-card {
  display: flex;
  flex-direction: column;
  min-height: 335px;
  border: 1px solid var(--line);
  padding: 1.4rem;
  background: var(--panel);
  transition: border-color 160ms ease, transform 160ms ease;
}

.source-card:hover {
  border-color: rgba(215, 230, 90, 0.55);
  transform: translateY(-2px);
}

.source-card--pk {
  border-left: 4px solid var(--accent);
  background: linear-gradient(145deg, rgba(215, 230, 90, 0.12), var(--panel) 58%);
}

.source-card h3 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.1;
}

.source-role {
  margin: 0.45rem 0 0;
  color: var(--accent) !important;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.source-card p {
  color: var(--muted);
}

.source-card a {
  margin-top: auto;
  padding-top: 1rem;
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.25em;
  text-transform: uppercase;
}

.source-card a:hover {
  color: var(--accent);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-grid li {
  border-top: 3px solid var(--accent);
  padding: 1.3rem;
  background: var(--panel-soft);
}

.process-grid span {
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.1em;
}

.process-grid h3 {
  margin: 1rem 0 0;
  font-size: 1.25rem;
}

.process-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.info-section--limits {
  padding-top: 1rem;
}

.limits-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
  border: 1px solid var(--line);
  padding: clamp(1.5rem, 4vw, 3rem);
  background: #20262a;
}

.limits-copy p {
  margin-top: 0;
  color: #c1c9cd;
  font-size: 1rem;
}

.info-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto clamp(4rem, 8vw, 7rem);
  border-left: 4px solid var(--accent);
  padding: 1.25rem 1.4rem;
  background: var(--panel);
}

.info-cta p {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
}

.info-cta a {
  flex: 0 0 auto;
  padding: 0.8rem 1rem;
  background: var(--accent);
  color: var(--dark);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.info-footer {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  padding: 1.2rem;
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
  color: var(--muted);
  font-size: 0.68rem;
}

.info-footer a {
  color: var(--accent);
  font-weight: 900;
  text-decoration: none;
}

@media (max-width: 900px) {
  .source-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .limits-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .info-header {
    align-items: flex-start;
    padding: 0.65rem;
  }

  .info-brand {
    gap: 0.5rem;
    padding: 0.3rem 0.5rem;
  }

  .info-brand img {
    width: 42px;
  }

  .info-brand-copy strong {
    font-size: 1.05rem;
  }

  .info-brand-copy small {
    display: none;
  }

  .info-beta {
    display: none;
  }

  .info-back {
    padding: 0.55rem;
    font-size: 0.58rem;
  }

  .info-language-switch {
    order: 3;
    width: 100%;
    justify-content: flex-end;
    border: 0;
    padding: 0;
  }

  .info-header-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .info-hero {
    padding-top: 5.5rem;
  }

  .truth-grid,
  .source-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .source-card {
    min-height: 0;
  }

  .info-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .info-cta a {
    text-align: center;
  }

  .info-footer {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* BERadar Beta 0.17.7 — fond aligné sur la carte */
:root {
  --how-map-background: #38435c;
}

body.how-page {
  background: var(--how-map-background);
}

.how-page::before {
  background:
    radial-gradient(circle at 16% 8%, rgba(215, 230, 90, 0.08), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.05), transparent 28%),
    linear-gradient(180deg, rgba(10, 14, 24, 0.08), rgba(10, 14, 24, 0.18));
}

.how-hero,
.how-principle,
.how-source-card,
.how-step,
.how-limit-card,
.how-cta {
  background: rgba(20, 25, 36, 0.72);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 1rem 2.8rem rgba(9, 12, 20, 0.18);
  backdrop-filter: blur(12px);
}

.how-source-card:hover,
.how-step:hover,
.how-limit-card:hover {
  background: rgba(24, 30, 43, 0.82);
  border-color: rgba(215, 230, 90, 0.42);
}