:root {
  --ink: #17241f;
  --ink-soft: #3d4f46;
  --muted: #5f7268;
  --paper: #f3f6f2;
  --paper-2: #e7eee8;
  --surface: rgba(255, 255, 255, 0.72);
  --accent: #1f5c45;
  --accent-deep: #143d2e;
  --line: rgba(23, 36, 31, 0.12);
  --shadow: 0 18px 50px rgba(20, 40, 32, 0.08);
  --radius: 18px;
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Outfit", "Segoe UI", sans-serif;
  --max: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(31, 92, 69, 0.12), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(90, 120, 140, 0.14), transparent 55%),
    linear-gradient(180deg, #eef3ef 0%, var(--paper) 35%, #f7f8f5 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-deep);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 0.75rem;
  z-index: 100;
  border-radius: 0.4rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(243, 246, 242, 0.82);
  border-bottom: 1px solid var(--line);
}

.site-header__inner,
.section__inner,
.site-footer__inner,
.hero__content {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  letter-spacing: -0.02em;
}

.brand__acronym {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(31, 92, 69, 0.28);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: flex-end;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.hero {
  position: relative;
  overflow: hidden;
  min-height: min(88vh, 46rem);
  display: grid;
  align-items: end;
  padding: 4rem 0 5rem;
}

.hero__atmosphere {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 20%, rgba(243, 246, 242, 0.55) 70%, var(--paper) 100%),
    repeating-linear-gradient(
      -18deg,
      transparent 0 18px,
      rgba(31, 92, 69, 0.035) 18px 19px
    ),
    radial-gradient(ellipse 80% 55% at 70% 35%, rgba(31, 92, 69, 0.22), transparent 60%),
    radial-gradient(ellipse 50% 40% at 15% 70%, rgba(70, 95, 110, 0.16), transparent 55%);
  animation: atmosphere-drift 14s ease-in-out infinite alternate;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 40rem;
  margin-left: max(1rem, calc((100% - var(--max)) / 2));
  margin-right: auto;
  animation: rise-in 0.9s ease-out both;
}

.hero__eyebrow {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero__lead {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--ink-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent);
  color: #f7faf7;
}

.btn--primary:hover {
  background: var(--accent-deep);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn--ghost:hover {
  border-color: rgba(31, 92, 69, 0.45);
  color: var(--accent-deep);
}

.section {
  padding: 4.5rem 0;
}

.section--tint {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.35), rgba(231, 238, 232, 0.65));
  border-block: 1px solid var(--line);
}

.section__label {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section__intro {
  margin: 1rem 0 0;
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.mission-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
  max-width: 42rem;
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
}

.mission-list li {
  display: grid;
  gap: 0.25rem;
  padding-left: 1rem;
  border-left: 3px solid rgba(31, 92, 69, 0.45);
  animation: rise-in 0.7s ease-out both;
}

.mission-list li:nth-child(2) {
  animation-delay: 0.08s;
}

.mission-list li:nth-child(3) {
  animation-delay: 0.16s;
}

.mission-list li:nth-child(4) {
  animation-delay: 0.24s;
}

.mission-list strong {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 650;
}

.mission-list span {
  color: var(--muted);
  font-size: 1rem;
}

.mission-note {
  margin: 1.5rem 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.org-grid {
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.org-grid > div {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.org-grid dt {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.org-grid dd {
  margin: 0.4rem 0 0;
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--ink);
}

.mono {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.contact-block {
  margin: 2rem 0 0;
  font-style: normal;
  display: grid;
  gap: 1.35rem;
  max-width: 28rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.contact-block p {
  margin: 0;
}

.contact-block__label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.statuts {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.statuts article {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.statuts article:first-child {
  border-top: 1px solid var(--line);
}

.statuts h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 650;
}

.statuts p,
.statuts ul {
  margin: 0 0 0.75rem;
  color: var(--ink-soft);
}

.statuts p:last-child,
.statuts ul:last-child {
  margin-bottom: 0;
}

.statuts ul {
  padding-left: 1.2rem;
}

.site-footer {
  padding: 3.5rem 0 2.5rem;
  background: var(--accent-deep);
  color: rgba(247, 250, 247, 0.88);
}

.site-footer a {
  color: #d7efe3;
}

.site-footer h2 {
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
}

.site-footer h3 {
  margin: 0 0 0.55rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(215, 239, 227, 0.8);
}

.site-footer p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem 2rem;
}

.site-footer__copy {
  margin-top: 2rem !important;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.88rem !important;
  color: rgba(247, 250, 247, 0.7);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes atmosphere-drift {
  from {
    transform: scale(1) translate(0, 0);
  }
  to {
    transform: scale(1.04) translate(-1.5%, 1%);
  }
}

@media (max-width: 720px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    padding: 3rem 0 3.5rem;
    align-items: start;
  }

  .hero__content {
    margin-left: auto;
  }

  .section {
    padding: 3.25rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__atmosphere,
  .hero__content,
  .mission-list li {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }
}