:root {
  --brun-fonce: #4A2727;
  --brun-moyen: #5a3632;
  --beige: #f3e4d4;
  --beige-clair: #f7e9dc;
  --blanc: #ffffff;
  --texte: #f8f5f2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: var(--brun-fonce);
  color: var(--texte);
}

a {
  color: inherit;
}

/* Layout générique */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.site-header {
  background-color: var(--brun-fonce);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.7rem;
  letter-spacing: 0.05em;
}

.main-nav a {
  margin-left: 20px;
  color: var(--texte);
  text-decoration: none;
  font-size: 0.95rem;
}

.main-nav a:hover {
  text-decoration: underline;
}

/* 1. BLOC INTRO PROBLÈME */

.top-intro {
  padding: 56px 0 32px;
  background: radial-gradient(circle at top left, #5b302e 0, #4A2727 45%, #3b1e1c 100%);
}

.intro-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.intro-text {
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 10px;
}

.intro-slogan {
  margin-top: 18px;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.95;
}

/* 2. HERO PRODUIT */

.hero {
  padding: 40px 0 40px;
  background: linear-gradient(120deg, var(--brun-fonce), var(--brun-moyen));
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  align-items: center;
  gap: 40px;
}

.hero-title {
  font-size: 2.1rem;
  margin-bottom: 14px;
}

.hero-subtitle {
  margin-bottom: 16px;
  max-width: 480px;
}

.hero-note {
  font-size: 0.9rem;
  opacity: 0.85;
  max-width: 480px;
}

.hero-visual img {
  max-width: 100%;
  border-radius: 18px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
}

/* Bouton principal */

.btn-primary {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  background-color: var(--beige);
  color: #2b1815;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  margin-bottom: 10px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  opacity: 0.95;
}

/* 3. BÉNÉFICES */

.benefits {
  padding: 40px 0 40px;
  background-color: var(--brun-fonce);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: radial-gradient(circle at top left, #5b302e 0, #3a1f1f 60%, #311818 100%);
  border-radius: 18px;
  padding: 22px 20px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.benefit-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.benefit-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 4. AVIS / PREUVES DE CONFIANCE */

.proof {
  padding: 40px 0 40px;
  background-color: #3b1e1c;
}

.proof h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.proof-intro {
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 26px;
  opacity: 0.9;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 22px;
}

.review-card {
  background: radial-gradient(circle at top left, #5b302e 0, #2f1616 65%, #251010 100%);
  border-radius: 18px;
  padding: 20px 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}

.review-text {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 12px;
}

.review-author {
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.9;
}

.proof-note {
  font-size: 0.85rem;
  opacity: 0.8;
  max-width: 620px;
}

/* 5. CONTACT / CTA FINAL */

.contact {
  padding: 40px 0 50px;
  background-color: var(--brun-fonce);
  border-top: 1px solid rgba(248, 245, 242, 0.08);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: flex-start;
}

.contact-copy h2 {
  font-size: 1.7rem;
  margin-bottom: 10px;
}

.contact-copy p {
  max-width: 480px;
  line-height: 1.6;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(243, 228, 212, 0.35);
  background-color: #2c1514;
  color: var(--texte);
  font-family: inherit;
  font-size: 0.95rem;
}

.contact-form textarea {
  min-height: 90px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(248, 245, 242, 0.7);
}

/* Footer */

.site-footer {
  padding: 18px 0;
  background-color: #2a1413;
  font-size: 0.85rem;
  color: rgba(248, 245, 242, 0.85);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-link {
  font-size: 0.9rem;
  text-decoration: underline;
  opacity: 0.9;
}