*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --blue: #4A7FC1;
      --yellow: #F5C842;
      --yellow-dark: #E0A800;
      --black: #1A1A1A;
      --white: #FFFFFF;
      --gray-light: #F7F7F5;
      --gray-mid: #E8E6E0;
      --text-muted: #666;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Inter', sans-serif;
      background: var(--white);
      color: var(--black);
      overflow-x: hidden;
    }

    /* ── HERO ── */
    .hero {
      min-height: 100vh;
      background: linear-gradient(160deg, var(--blue) 0%, #8fb8e8 30%, #ffffff 55%, #f7e07a 80%, var(--yellow) 100%);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 60px 24px 80px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      width: 700px;
      height: 700px;
      border-radius: 50%;
      border: 80px solid rgba(255,255,255,0.12);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      pointer-events: none;
    }

    .hero-logo {
      font-family: 'Inter', sans-serif;
      font-weight: 800;
      font-size: clamp(14px, 2vw, 18px);
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--black);
      opacity: 0.65;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .hero-logo-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--black);
      opacity: 0.15;
    }

    .hero-eyebrow {
      font-family: 'Inter', sans-serif;
      font-weight: 600;
      font-size: clamp(13px, 1.5vw, 15px);
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--black);
      opacity: 0.55;
      margin-bottom: 10px;
    }

    .hero-title {
      font-family: 'Playfair Display', serif;
      font-style: italic;
      font-weight: 900;
      font-size: clamp(64px, 14vw, 140px);
      line-height: 0.9;
      color: var(--black);
      text-align: center;
      margin-bottom: 8px;
    }

    .hero-title span {
      font-style: normal;
      font-size: clamp(14px, 2vw, 20px);
      letter-spacing: 0.3em;
      display: block;
      font-weight: 700;
      margin-bottom: 12px;
      font-family: 'Inter', sans-serif;
      opacity: 0.6;
    }

    .hero-subtitle {
      font-family: 'Inter', sans-serif;
      font-size: clamp(13px, 1.5vw, 15px);
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--black);
      opacity: 0.5;
      margin-bottom: 56px;
    }

    /* ── PRICE BLOCK ── */
    .price-block {
      background: rgba(255,255,255,0.7);
      backdrop-filter: blur(12px);
      border-radius: 24px;
      padding: 40px 56px;
      text-align: center;
      border: 1px solid rgba(255,255,255,0.8);
      animation: floatIn 0.8s ease forwards;
      opacity: 0;
      transform: translateY(20px);
    }

    @keyframes floatIn {
      to { opacity: 1; transform: translateY(0); }
    }

    .price-main {
      font-family: 'Inter', sans-serif;
      font-weight: 800;
      font-size: clamp(72px, 14vw, 120px);
      line-height: 1;
      color: var(--black);
      display: flex;
      align-items: flex-start;
      justify-content: center;
      gap: 4px;
    }

    .price-cents {
      font-size: clamp(32px, 6vw, 52px);
      margin-top: 12px;
      font-weight: 700;
    }

    .price-label {
      font-size: clamp(22px, 4vw, 34px);
      font-weight: 700;
      color: var(--black);
      opacity: 0.8;
      letter-spacing: 0.05em;
      margin-top: 2px;
    }

    .price-per {
      font-size: 13px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      opacity: 0.4;
      font-weight: 500;
      margin-top: 4px;
    }

    .price-offer {
      margin-top: 20px;
      font-family: 'Inter', sans-serif;
      font-weight: 700;
      font-size: clamp(18px, 3vw, 24px);
      color: var(--black);
      background: var(--yellow);
      display: inline-block;
      padding: 10px 28px;
      border-radius: 100px;
    }

    .hero-dates {
      margin-top: 32px;
      font-weight: 700;
      font-size: clamp(14px, 2vw, 17px);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--black);
      opacity: 0.65;
    }

    .hero-cta {
      margin-top: 20px;
    }

    .btn-primary {
      display: inline-block;
      background: var(--black);
      color: var(--white);
      font-family: 'Inter', sans-serif;
      font-weight: 700;
      font-size: 15px;
      letter-spacing: 0.08em;
      padding: 18px 48px;
      border-radius: 100px;
      text-decoration: none;
      transition: transform 0.2s, background 0.2s;
    }

    .btn-primary:hover { background: var(--blue); transform: translateY(-2px); }

    .hero-note {
      margin-top: 28px;
      font-size: 12px;
      opacity: 0.4;
      letter-spacing: 0.05em;
    }

    /* ── SECTION GÉNÉRIQUE ── */
    section {
      padding: 80px 24px;
    }

    .container {
      max-width: 1000px;
      margin: 0 auto;
    }

    .section-eyebrow {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--blue);
      margin-bottom: 12px;
    }

    .section-title {
      font-family: 'Playfair Display', serif;
      font-weight: 900;
      font-size: clamp(32px, 5vw, 52px);
      line-height: 1.1;
      margin-bottom: 20px;
    }

    .section-body {
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-muted);
      max-width: 640px;
    }

    /* ── ARGUMENTS ── */
    .args-section {
      background: var(--gray-light);
    }

    .args-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 24px;
      margin-top: 48px;
    }

    .arg-card {
      background: var(--white);
      border-radius: 16px;
      padding: 32px 28px;
      border: 1px solid var(--gray-mid);
    }

    .arg-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .arg-icon svg {
      width: 24px;
      height: 24px;
    }

    .arg-title {
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 10px;
    }

    .arg-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* ── OFFRE DETAIL ── */
    .offer-section {
      background: var(--black);
      color: var(--white);
    }

    .offer-section .section-eyebrow { color: var(--yellow); }
    .offer-section .section-title { color: var(--white); }
    .offer-section .section-body { color: rgba(255,255,255,0.55); }

    .offer-bands {
      display: flex;
      flex-direction: column;
      gap: 2px;
      margin-top: 48px;
      border-radius: 16px;
      overflow: hidden;
    }

    .offer-band {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 22px 32px;
      background: rgba(255,255,255,0.06);
      font-size: 15px;
    }

    .offer-band:first-child { background: rgba(245,200,66,0.15); }

    .offer-band-label {
      font-weight: 500;
      color: rgba(255,255,255,0.75);
    }

    .offer-band-value {
      font-weight: 700;
      font-size: 16px;
      color: var(--white);
    }

    .offer-band.highlight .offer-band-value {
      color: var(--yellow);
      font-size: 20px;
    }

    .offer-fine {
      margin-top: 24px;
      font-size: 12px;
      color: rgba(255,255,255,0.3);
    }

    /* ── CTA SECTION ── */
    .cta-section {
      background: linear-gradient(135deg, var(--blue) 0%, #8fb8e8 50%, var(--yellow) 100%);
      text-align: center;
      padding: 100px 24px;
    }

    .cta-section .section-title {
      color: var(--black);
      max-width: 680px;
      margin: 0 auto 32px;
    }

    .cta-section .section-eyebrow {
      color: rgba(0,0,0,0.55);
      justify-content: center;
    }

    .btn-white {
      display: inline-block;
      background: var(--white);
      color: var(--black);
      font-family: 'Inter', sans-serif;
      font-weight: 700;
      font-size: 15px;
      letter-spacing: 0.08em;
      padding: 18px 48px;
      border-radius: 100px;
      text-decoration: none;
      transition: transform 0.2s;
    }

    .btn-white:hover { transform: translateY(-2px); }

    .cta-address {
      margin-top: 40px;
      font-size: 14px;
      color: rgba(0,0,0,0.5);
      line-height: 2;
    }

    /* ── FOOTER ── */
    footer {
      background: var(--black);
      color: rgba(255,255,255,0.35);
      text-align: center;
      padding: 32px 24px;
      font-size: 12px;
      letter-spacing: 0.05em;
    }

    footer a { color: rgba(255,255,255,0.5); }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      padding: 20px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255,255,255,0);
      transition: background 0.3s, backdrop-filter 0.3s;
    }

    nav.scrolled {
      background: rgba(255,255,255,0.9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(0,0,0,0.08);
    }

    .nav-brand {
      font-weight: 800;
      font-size: 16px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--black);
      text-decoration: none;
    }

    .nav-cta {
      display: inline-block;
      background: var(--black);
      color: var(--white);
      font-weight: 700;
      font-size: 13px;
      padding: 10px 24px;
      border-radius: 100px;
      text-decoration: none;
      letter-spacing: 0.05em;
      transition: background 0.2s;
    }

    .nav-cta:hover { background: var(--blue); }

    /* ── FORMULAIRE ── */
    .form-section {
      background: linear-gradient(160deg, var(--blue) 0%, #8fb8e8 35%, #ffffff 60%, #f7e07a 85%, var(--yellow) 100%);
      padding: 100px 24px;
    }

    .form-section .section-eyebrow { color: rgba(0,0,0,0.5); }
    .form-section .section-title { color: var(--black); }
    .form-section .section-body { color: rgba(0,0,0,0.55); }

    .form-card {
      background: rgba(255,255,255,0.82);
      backdrop-filter: blur(20px);
      border-radius: 24px;
      padding: 48px 52px;
      margin-top: 48px;
      border: 1px solid rgba(255,255,255,0.9);
      max-width: 680px;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 7px;
      margin-bottom: 18px;
    }

    .form-group label {
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
      color: var(--black);
      opacity: 0.7;
      text-transform: uppercase;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      font-family: 'Inter', sans-serif;
      font-size: 15px;
      color: var(--black);
      background: rgba(255,255,255,0.9);
      border: 1.5px solid rgba(0,0,0,0.12);
      border-radius: 10px;
      padding: 13px 16px;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
      width: 100%;
      appearance: none;
    }

    .form-group select {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231A1A1A' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 40px;
      cursor: pointer;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(74,127,193,0.15);
    }

    .form-group textarea { resize: vertical; min-height: 100px; }

    .form-group .field-error {
      font-size: 12px;
      color: #c0392b;
      font-weight: 500;
    }

    .form-submit {
      width: 100%;
      background: var(--black);
      color: var(--white);
      font-family: 'Inter', sans-serif;
      font-weight: 700;
      font-size: 16px;
      letter-spacing: 0.06em;
      padding: 18px 32px;
      border-radius: 100px;
      border: none;
      cursor: pointer;
      transition: background 0.2s, transform 0.15s;
      margin-top: 8px;
    }

    .form-submit:hover { background: var(--blue); transform: translateY(-2px); }
    .form-submit:active { transform: scale(0.98); }

    .form-rgpd {
      margin-top: 16px;
      font-size: 12px;
      color: rgba(0,0,0,0.4);
      line-height: 1.6;
    }

    .form-success {
      background: rgba(255,255,255,0.85);
      border-radius: 16px;
      padding: 40px 32px;
      text-align: center;
      display: none;
    }

    .form-success-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 640px) {
      .price-block { padding: 32px 28px; }
      .offer-band { padding: 18px 20px; flex-direction: column; align-items: flex-start; gap: 4px; }
      nav { padding: 16px 20px; }
      .form-row { grid-template-columns: 1fr; }
      .form-card { padding: 32px 24px; }
    }