:root {
  --bg: #eef2f6;
  --paper: #f7f9fb;
  --ink: #243040;
  --mute: #5d6b78;
  --steel: #3d6b8a;
  --line: #cfd8e0;
  --rail: 200px;
  --serif: Baskerville, "Baskerville Old Face", Garamond, "Times New Roman", serif;
  --sans: Tahoma, "Trebuchet MS", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: var(--steel); }
p { margin: 0 0 1em; }
h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.2;
  text-transform: none;
  margin: 0 0 0.45em;
}
h1 { font-size: clamp(2.1rem, 4.5vw, 3.1rem); }
h2 { font-size: 1.7rem; }
h3 { font-size: 1.25rem; }
[hidden] { display: none !important; }

.layout { display: grid; grid-template-columns: 1fr var(--rail); min-height: 100vh; }
.rail {
  position: sticky; top: 0; height: 100vh;
  border-left: 1px solid var(--line);
  background: var(--paper);
  padding: 28px 16px;
  display: flex; flex-direction: column; gap: 22px;
}
.rail .nom {
  font-family: var(--serif);
  font-size: 1.45rem;
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.rail .nom small { display: block; font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); margin-top: 4px; }
.rail nav { display: grid; gap: 8px; }
.rail nav a {
  text-decoration: none;
  color: var(--mute);
  font-size: 0.88rem;
}
.rail nav a.ici, .rail nav a:hover { color: var(--steel); }
.chap { font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel); margin-bottom: 8px; }
.content { min-width: 0; }
.cover { position: relative; }
.cover img { width: 100%; height: 62vh; object-fit: cover; }
.cover .legende {
  position: absolute; left: 6vw; bottom: 32px;
  background: rgba(247,249,251,0.92);
  padding: 20px 24px;
  max-width: 28em;
}
.pad { padding: 48px 6vw 64px; }
.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.mod {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.mod b { font-family: var(--serif); font-size: 1.5rem; color: var(--steel); display: block; margin-bottom: 6px; }
.btn {
  display: inline-block;
  text-decoration: none;
  border-bottom: 1px solid var(--steel);
  padding-bottom: 2px;
}
.equipe { display: grid; grid-template-columns: 230px 1fr; gap: 28px; }
.liste a {
  display: block;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.35rem;
}
.prose { width: min(640px, calc(100% - 12vw)); margin: 0 auto; padding: 48px 0 80px; }
.form { display: grid; gap: 10px; max-width: 420px; }
label { font-size: 0.8rem; color: var(--mute); }
input, select, textarea {
  width: 100%; border: 1px solid var(--line); background: #fff; padding: 8px 10px; font: inherit; color: var(--ink); border-radius: 2px;
}
textarea { min-height: 110px; }
button {
  font: inherit; background: var(--steel); color: #fff; border: 0; padding: 10px 14px; cursor: pointer;
}
.bas {
  padding: 24px 6vw 32px;
  font-size: 0.85rem;
  color: var(--mute);
  border-top: 1px solid var(--line);
}
.bas a { color: var(--ink); }

.cookie {
  display: none;
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  z-index: 50;
  background: var(--paper);
  border: 1px solid var(--steel);
  padding: 12px 18px;
  max-width: min(520px, calc(100% - 24px));
  font-size: 0.9rem;
  text-align: center;
}
.cookie.is-open { display: block; }
.cookie button { margin: 8px 4px 0; }

.menu {
  display: none;
  position: fixed; top: 12px; left: 12px; z-index: 30;
  background: var(--steel); color: #fff; border: 0; padding: 8px 10px; font: inherit;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .rail {
    position: fixed; right: 0; top: 0; transform: translateX(100%);
    transition: transform 0.2s; z-index: 25; width: min(80vw, 280px);
  }
  .rail.open { transform: none; }
  .menu { display: block; }
  .deux, .equipe { grid-template-columns: 1fr; }
  .cover img { height: 46vh; }
}