:root {
  --paper: #efe8dc;
  --ink: #201b19;
  --ink-soft: #5a4d48;
  --accent: #a73f2f;
  --accent-light: #d86f55;
  --line: rgba(32, 27, 25, 0.14);
  --card: rgba(255, 252, 248, 0.75);
  --shadow: 0 20px 48px rgba(27, 17, 13, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 0%, #f7f1e8 0, transparent 35%),
    radial-gradient(circle at 90% 20%, #ece2d2 0, transparent 40%), var(--paper);
  line-height: 1.6;
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  z-index: -1;
}

h1,
h2,
h3 {
  font-family: "Fraunces", Georgia, serif;
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

p {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3.5rem);
  backdrop-filter: blur(8px);
  background: rgba(239, 232, 220, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms ease, transform 240ms ease;
}

.site-header.scrolled {
  border-color: var(--line);
}

.logo {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  background: rgba(167, 63, 47, 0.12);
}

.menu-toggle {
  display: none;
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
}

main {
  display: grid;
  gap: clamp(4rem, 8vw, 7rem);
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 3.5rem) 5rem;
}

.hero {
  max-width: 1050px;
  margin: 0 auto;
  display: grid;
  gap: 1.2rem;
}

.eyebrow {
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(2.1rem, 6vw, 4.25rem);
  max-width: 18ch;
}

.lead {
  max-width: 68ch;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2.3vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 0.55rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.68rem 1.15rem;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-light));
  box-shadow: var(--shadow);
}

.button.ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.hero-cards {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.hero-cards article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.hero-cards h2 {
  margin-bottom: 0.35rem;
  font-size: 1.45rem;
}

.section-head {
  max-width: 1050px;
  margin: 0 auto 1.5rem;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.timeline,
.dossiers,
.faq {
  max-width: 1050px;
  width: 100%;
  margin: 0 auto;
}

.timeline ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.timeline .year {
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.timeline h3 {
  margin-bottom: 0.35rem;
  font-size: 1.25rem;
}

.timeline p {
  color: var(--ink-soft);
}

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

.grid article {
  padding: 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.7rem;
}

.grid p {
  color: var(--ink-soft);
}

.grid a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.faq-list {
  display: grid;
  gap: 0.7rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 252, 248, 0.88);
  box-shadow: var(--shadow);
  padding: 0.8rem 0.95rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin-top: 0.55rem;
  color: var(--ink-soft);
}

.site-footer {
  padding: 2rem 1rem 2.8rem;
  text-align: center;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  background: rgba(245, 237, 226, 0.8);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-cards,
  .grid {
    grid-template-columns: 1fr;
  }

  .timeline li {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.45rem);
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    min-width: 180px;
    background: rgba(255, 252, 248, 0.98);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 0.45rem;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 0.55rem 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}