* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', sans-serif;
      background: #f8faff;
      color: #0b2545;
      line-height: 1.6;
    }
    a { text-decoration: none; color: inherit; }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Palette : Bleu foncé #1D4ED8 et Orange #F97316 */
    :root {
      --primary: #1D4ED8;
      --primary-dark: #1a3faa;
      --primary-light: #eef3ff;
      --orange: #F97316;
      --orange-light: #fbbf24;
      --orange-dark: #e05a0e;
      --white: #ffffff;
      --gray-bg: #f0f4fe;
    }
    /* navbar */
    .navbar {
      background: var(--primary);
      padding: 16px 0;
      border-bottom: 3px solid var(--orange);
      position: sticky;
      top: 0;
      z-index: 999;
    }
    .navbar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--white);
      letter-spacing: -0.5px;
    }
    .logo span { color: var(--orange); }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
      flex-wrap: wrap;
    }
    .nav-links a {
      color: rgba(255,255,255,0.9);
      font-weight: 500;
      transition: 0.2s;
      font-size: 1rem;
      position: relative;
    }
    .nav-links a:hover { color: var(--orange); }
    .dropdown {
      position: relative;
      display: inline-block;
    }
    .dropdown-content {
      display: none;
      position: absolute;
      background: var(--white);
      min-width: 200px;
      box-shadow: 0 12px 30px rgba(0,0,0,0.12);
      border-radius: 12px;
      padding: 12px 0;
      top: 30px;
      left: -10px;
      border-top: 3px solid var(--orange);
    }
    .dropdown-content a {
      color: var(--primary);
      padding: 10px 24px;
      display: block;
      font-weight: 400;
    }
    .dropdown-content a:hover { background: var(--gray-bg); color: var(--orange); }
    .dropdown:hover .dropdown-content { display: block; }
    .hamburger { display: none; font-size: 1.8rem; color: white; cursor: pointer; }
    @media (max-width: 992px) {
      .nav-links { display: none; width: 100%; flex-direction: column; gap: 12px; padding: 20px 0; }
      .nav-links.open { display: flex; }
      .hamburger { display: block; }
      .dropdown-content { position: static; box-shadow: none; border-top: none; padding: 0 0 0 20px; }
    }

    /* Hero carousel */
    .hero {
      position: relative;
      height: 85vh;
      min-height: 500px;
      overflow: hidden;
    }
    .hero-slide {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-size: cover;
      background-position: center;
      opacity: 0;
      transition: opacity 1.2s ease;
      display: flex;
      align-items: center;
    }
    .hero-slide.active { opacity: 1; }
    .hero-slide::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(29, 78, 216, 0.7);
      z-index: 1;
    }
    .hero-slide .container {
      position: relative;
      z-index: 2;
      color: white;
      display: flex;
      flex-direction: column;
      max-width: 700px;
    }
    .hero-slide h1 {
      font-size: 3.4rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-slide h1 span { color: var(--orange); }
    .hero-slide p {
      font-size: 1.3rem;
      opacity: 0.9;
      margin-bottom: 30px;
    }
    .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn {
      display: inline-block;
      padding: 14px 36px;
      border-radius: 50px;
      font-weight: 600;
      transition: 0.25s;
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }
    .btn-primary { background: var(--orange); color: white; }
    .btn-primary:hover { background: var(--orange-light); transform: scale(1.02); color: var(--primary); }
    .btn-outline { background: transparent; border: 2px solid white; color: white; }
    .btn-outline:hover { background: white; color: var(--primary); }
    .hero-indicators {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 5;
      display: flex;
      gap: 14px;
    }
    .hero-indicators span {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: rgba(255,255,255,0.4);
      cursor: pointer;
      transition: 0.3s;
    }
    .hero-indicators span.active { background: var(--orange); width: 28px; border-radius: 20px; }
    @media (max-width: 768px) {
      .hero { height: 70vh; }
      .hero-slide h1 { font-size: 2.2rem; }
    }

    /* sections */
    section { padding: 70px 0; }
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 20px;
      position: relative;
      color: var(--primary);
    }
    .section-title:after {
      content: '';
      display: block;
      width: 70px;
      height: 5px;
      background: var(--orange);
      margin-top: 12px;
    }
    .text-center { text-align: center; }
    .text-center .section-title:after { margin: 12px auto 0; }

    .grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 30px; }
    .grid-credits {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 30px; }
    /* Grille témoignages : 4 par ligne */
    .grid-testimonials {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .card {
      background: white;
      padding: 28px 20px;
      border-radius: 24px;
      box-shadow: 0 8px 30px rgba(0,0,0,0.04);
      transition: 0.25s;
      border: 1px solid rgba(0,0,0,0.02);
    }
    .card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.06); }
    .card i { font-size: 2.8rem; color: var(--orange); margin-bottom: 18px; }
    .card h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--primary); }

    .credit-card {
      background: white;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: 0 8px 30px rgba(0,0,0,0.05);
      transition: 0.3s;
    }
    .credit-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
    .credit-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
      background: var(--primary);
    }
    .credit-card .body { padding: 20px; }
    .credit-card .body h3 { margin-bottom: 8px; color: var(--primary); }
    .badge-orange {
      background: var(--orange);
      color: white;
      padding: 6px 18px;
      border-radius: 40px;
      font-size: 0.8rem;
      font-weight: 700;
      display: inline-block;
      margin-top: 12px;
      transition: 0.2s;
    }
    .badge-orange:hover { background: var(--orange-light); color: var(--primary); }

    .stat-item { background: white; padding: 30px 10px; border-radius: 30px; box-shadow: 0 6px 20px rgba(0,0,0,0.02); }
    .stat-item .number { font-size: 2.8rem; font-weight: 700; color: var(--primary); }
    .stat-item .number span { color: var(--orange); }

    .testimonial-card {
      background: white;
      border-radius: 20px;
      padding: 24px 20px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.04);
      transition: 0.25s;
      border: 1px solid rgba(0,0,0,0.03);
    }
    .testimonial-card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(0,0,0,0.07); }
    .testimonial-card .flex { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
    .testimonial-card img {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      object-fit: cover;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: var(--primary);
      flex-shrink: 0;
    }
    .testimonial-card .stars { color: var(--orange); letter-spacing: 2px; font-size: 0.9rem; }
    .testimonial-card p { font-style: italic; color: #2c3e5c; font-size: 0.95rem; }

    .faq-item { border-bottom: 1px solid #e9edf4; padding: 16px 0; cursor: pointer; }
    .faq-item .question { font-weight: 600; display: flex; justify-content: space-between; color: var(--primary); }
    .faq-item .question i { color: var(--orange); }
    .faq-item .answer { display: none; padding-top: 10px; color: #2c3e5c; }

    .footer {
      background: var(--primary);
      color: #cfd9e6;
      padding: 50px 0 20px;
    }
    .footer .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 30px; }
    .footer h4 { color: white; margin-bottom: 18px; font-weight: 600; }
    .footer a { display: block; margin-bottom: 10px; opacity: 0.8; transition: 0.2s; }
    .footer a:hover { opacity: 1; color: var(--orange); }
    .footer .copyright { text-align: center; margin-top: 40px; border-top: 1px solid #2a3f5e; padding-top: 24px; font-size: 0.9rem; }

    .form-control { width: 100%; padding: 14px; border-radius: 12px; border: 1px solid #dde3ed; font-size: 1rem; }
    .form-control:focus { border-color: var(--orange); outline: none; box-shadow: 0 0 0 3px rgba(249,115,22,0.2); }
    .flex { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
    .mt-4 { margin-top: 24px; }
    .mb-4 { margin-bottom: 24px; }
    .bg-gray { background: var(--gray-bg); }
    .text-orange { color: var(--orange); }
    .img-illustration {
      width: 100%;
      border-radius: 24px;
      background: var(--primary);
      min-height: 200px;
      object-fit: cover;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-credits { grid-template-columns: repeat(2, 1fr); }
      .grid-testimonials { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 600px) {
      .grid-credits { grid-template-columns: 1fr; }
      .grid-testimonials { grid-template-columns: 1fr; }
    }