:root {
  --papier: #FAFAFA;
  --blanc: #FFFFFF;
  --sarcelle: #4F9A8F;
  --sarcelle-fonce: #3A7A70;
  --sarcelle-pale: #E6F1EF;
  --encre: #232729;
  --gris: #5D6568;
  --trait: #E3E6E6;
  --rayon: 14px;
  --large: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--sarcelle-fonce); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 6vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.4rem, 4.2vw, 2.1rem); font-weight: 800; }
h3 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: var(--large); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 720px; }

/* barre du haut */
.top { border-bottom: 1px solid var(--trait); background: var(--papier); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.logo { font-weight: 800; color: var(--encre); text-decoration: none; letter-spacing: .02em; }
.logo span { color: var(--sarcelle); }
.top nav a { font-size: .9rem; font-weight: 600; text-decoration: none; margin-left: 16px; }

/* boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  background: var(--sarcelle); color: #fff; font-weight: 700; font-size: 1rem;
  text-decoration: none; border: 0; border-radius: 999px; padding: .9em 1.6em;
  cursor: pointer; font-family: inherit; transition: background .15s;
}
.btn:hover { background: var(--sarcelle-fonce); }
.btn.ghost { background: transparent; color: var(--sarcelle-fonce); border: 2px solid var(--sarcelle); }

.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; color: var(--sarcelle-fonce); margin-bottom: .8em; }
.accent { color: var(--sarcelle); }
.muted { color: var(--gris); }
.small { font-size: .85rem; }

/* hero */
.hero { padding: 48px 0 40px; }
.hero .grid { display: grid; gap: 32px; align-items: center; }
.hero .lead { font-size: 1.1rem; color: var(--gris); max-width: 36em; }
.hero .cover { max-width: 300px; margin: 0 auto; border-radius: 6px; box-shadow: 0 18px 40px rgba(35,39,41,.18); transform: rotate(-2deg); }
@media (min-width: 860px) {
  .hero { padding: 80px 0 64px; }
  .hero .grid { grid-template-columns: 1.4fr 1fr; }
}

/* bloc encre */
.band { background: var(--encre); color: #fff; padding: 48px 0; }
.band h2 { color: #fff; }
.band p { color: #D9DEDF; }
.band .points { display: grid; gap: 20px; margin-top: 24px; }
.band .points div { border-left: 3px solid var(--sarcelle); padding-left: 14px; }
.band .points b { color: #fff; display: block; }
@media (min-width: 860px) { .band .points { grid-template-columns: repeat(3, 1fr); } }

/* rayons */
.rayon { padding: 48px 0 8px; }
.rayon-tete { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; margin-bottom: 18px; border-bottom: 2px solid var(--encre); padding-bottom: 10px; }
.rayon-tete h2 { margin: 0; }
.rayon-tete p { margin: 0; color: var(--gris); }
.livres { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .livres { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .livres { grid-template-columns: repeat(3, 1fr); } }
.livre {
  display: grid; grid-template-columns: 92px 1fr; gap: 14px; align-items: start;
  background: var(--blanc); border: 1px solid var(--trait); border-radius: var(--rayon);
  padding: 14px; text-decoration: none; color: var(--encre); transition: border-color .15s, transform .15s;
}
.livre:hover { border-color: var(--sarcelle); transform: translateY(-2px); }
.livre img { width: 92px; border-radius: 3px; box-shadow: 0 6px 14px rgba(35,39,41,.15); }
.livre b { display: block; font-size: 1rem; line-height: 1.3; margin-bottom: 6px; }
.livre p { font-size: .86rem; color: var(--gris); margin: 0 0 8px; line-height: 1.5; }
.livre .prix { font-weight: 700; color: var(--sarcelle-fonce); font-size: .9rem; }

/* formulaire */
.form { background: var(--blanc); border: 1px solid var(--trait); border-radius: var(--rayon); padding: 22px; box-shadow: 0 10px 30px rgba(35,39,41,.06); }
.form label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 4px; }
.form input[type=email], .form input[type=text] {
  width: 100%; font: inherit; padding: .8em 1em; border: 1.5px solid var(--trait); border-radius: 10px;
  background: var(--papier); margin-bottom: 14px; color: var(--encre);
}
.form input:focus { outline: none; border-color: var(--sarcelle); background: #fff; }
.form .btn { width: 100%; }
.form .rgpd { font-size: .78rem; color: var(--gris); margin: 12px 0 0; }
.form .msg { display: none; margin-top: 14px; padding: 12px 14px; border-radius: 10px; font-weight: 600; }
.form .msg.ok { display: block; background: var(--sarcelle-pale); color: var(--sarcelle-fonce); }
.form .msg.err { display: block; background: #FBEAEA; color: #8A2E2E; }

/* listes */
.check { list-style: none; padding: 0; margin: 0 0 1.2em; }
.check li { position: relative; padding-left: 30px; margin-bottom: .7em; }
.check li::before { content: ""; position: absolute; left: 0; top: .35em; width: 18px; height: 18px; border-radius: 50%; background: var(--sarcelle-pale); border: 2px solid var(--sarcelle); }

/* texte long (légal) */
.doc { padding: 40px 0 64px; }
.doc h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); }
.doc h2 { font-size: 1.25rem; margin-top: 1.8em; }
.doc p, .doc li { color: #33393B; }
.todo { background: #FFF4D6; color: #6B4E00; padding: 0 .3em; border-radius: 4px; font-weight: 600; }

/* page centrée */
.centre { min-height: 62vh; display: flex; align-items: center; padding: 56px 0; }
.centre .wrap { text-align: center; }
.centre .narrow { margin: 0 auto; }

/* pied */
footer { border-top: 1px solid var(--trait); padding: 28px 0 40px; margin-top: 56px; font-size: .85rem; color: var(--gris); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: space-between; }
footer nav a { color: var(--gris); margin-right: 16px; text-decoration: none; }
footer nav a:hover { color: var(--sarcelle-fonce); }

/* liste d'articles (/articles/) */
.articles { list-style: none; padding: 0; margin: 1.5rem 0; }
.articles li { padding: 1rem 0; border-bottom: 1px solid var(--trait); }
.articles a { color: var(--encre); text-decoration: none; }
.articles a:hover b { color: var(--sarcelle-fonce); }