:root {
    --orange: #F47200; --orange-dark: #d86400; --orange-soft: #fff3e8;
    --ink: #111827; --ink-2: #374151; --muted: #6b7280; --faint: #9ca3af;
    --line: #e7eaee; --bg: #ffffff; --bg-2: #f7f8fa;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(17,24,39,.04), 0 8px 24px rgba(17,24,39,.06);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    min-height: 100vh; display: flex; flex-direction: column;
    margin: 0; background: var(--bg); color: var(--ink);
    font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Roboto, Arial, sans-serif;
    line-height: 1.6; -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; }
  a:focus-visible, .btn:focus-visible { outline: 3px solid rgba(244,114,0,.45); outline-offset: 2px; border-radius: 8px; }
  .wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
  .sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

  header {
    position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92);
    backdrop-filter: saturate(160%) blur(10px); -webkit-backdrop-filter: saturate(160%) blur(10px);
    border-bottom: 1px solid var(--line);
  }
  header .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
  header .logo img { height: 30px; width: auto; display: block; }
  nav { display: flex; gap: 22px; margin-left: auto; }
  nav a { text-decoration: none; color: var(--ink-2); font-size: 14.5px; font-weight: 600; }
  nav a:hover { color: var(--orange); }

  .btn {
    display: inline-flex; align-items: center; gap: 8px; text-decoration: none; white-space: nowrap;
    font-weight: 700; font-size: 15px; padding: 12px 20px; border-radius: 10px;
    transition: background .15s ease, border-color .15s ease, transform .15s ease;
  }
  .btn svg { width: 17px; height: 17px; }
  .btn-primary { background: var(--orange); color: #fff; box-shadow: 0 6px 16px rgba(244,114,0,.25); }
  .btn-primary:hover { background: var(--orange-dark); transform: translateY(-1px); }
  .btn-ghost { color: var(--ink); border: 1px solid var(--line); background: #fff; }
  .btn-ghost:hover { border-color: #cfd5dc; }
  .btn-sm { padding: 9px 15px; font-size: 14px; box-shadow: none; }

  .hero {
    position: relative; overflow: hidden; border-bottom: 1px solid var(--line);
    background:
      radial-gradient(760px 380px at 50% 0%, rgba(244,114,0,.11), transparent 65%),
      radial-gradient(rgba(17,24,39,.07) 1px, transparent 1px) 0 0 / 22px 22px,
      var(--bg-2);
  }
  main { flex: 1; display: flex; flex-direction: column; }
  .hero { flex: 1; display: flex; align-items: center; }
  .hero .wrap { width: 100%; padding-top: 64px; padding-bottom: 64px; text-align: center; }
  .hero .wrap > div { max-width: 720px; margin: 0 auto; }
  h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 16px; }
  h1 em { font-style: normal; color: var(--orange); }
  h1, .lead { text-wrap: balance; }
  .lead { font-size: 18px; color: var(--ink-2); margin: 0 auto 32px; max-width: 560px; }
  .actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
  @media (min-width: 961px) { .actions { flex-wrap: nowrap; } }


  section.block { padding: 48px 0 56px; }
  section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .head { margin-bottom: 30px; text-align: center; }
  .head h2 { margin-bottom: 0; }
  h2 { font-size: clamp(25px, 3vw, 32px); line-height: 1.2; letter-spacing: -.015em; margin: 8px 0 10px; }

  

  .pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .pillar {
    display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: inherit;
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 28px 26px 24px; box-shadow: var(--shadow);
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  }
  .pillar:hover { transform: translateY(-3px); border-color: #ffc896;
    box-shadow: 0 2px 4px rgba(17,24,39,.04), 0 16px 32px rgba(17,24,39,.09); }
  .pillar .ico {
    width: 46px; height: 46px; border-radius: 12px; background: var(--orange-soft); color: var(--orange);
    display: inline-flex; align-items: center; justify-content: center; margin-bottom: 6px;
  }
  .pillar .ico svg { width: 23px; height: 23px; }
  .pillar h3 { margin: 0; font-size: 18px; color: var(--ink); }
  .pillar p { margin: 0; color: var(--muted); font-size: 15px; flex: 1; }
  .pillar .more { margin-top: 8px; display: inline-flex; align-items: center; gap: 6px;
    font-weight: 700; font-size: 14px; color: var(--orange); }
  .pillar .more svg { width: 15px; height: 15px; transition: transform .18s ease; }
  .pillar:hover .more svg { transform: translateX(3px); }


  footer { border-top: 1px solid var(--line); padding: 26px 0 22px; color: var(--muted); font-size: 14px; text-align: center; }
  footer .wrap { display: flex; flex-direction: column; align-items: center; gap: 12px; }
  footer img { height: 26px; width: auto; display: block; }
  footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; }
  footer .copy { margin: 0; font-size: 13px; color: var(--faint); }
  footer a { text-decoration: none; color: var(--ink-2); }
  footer a:hover { color: var(--orange); }

  @media (max-width: 960px) {
    .hero .wrap { padding-top: 72px; padding-bottom: 72px; }
      .pillars { grid-template-columns: 1fr; }
  }
  @media (max-width: 860px) {
    .head { grid-template-columns: 1fr; }
  }
  @media (max-width: 720px) {
    nav { display: none; }
    header .wrap { justify-content: space-between; }
    section.block { padding: 56px 0; }
    }
  @media (max-width: 640px) {
    .hero .wrap { padding-top: 52px; padding-bottom: 56px; }
    .pillar { padding: 22px 20px 20px; }
    .pillar p { font-size: 14.5px; }
    section.block { padding: 44px 0; }
    .head { margin-bottom: 22px; }
  }
  @media (max-width: 520px) {
    .actions .btn { flex: 1 1 100%; justify-content: center; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  }
  @keyframes flow { to { stroke-dashoffset: -64; } }

  /* Grands écrans : la page occupe la largeur, le texte grandit avec elle. */
  @media (min-width: 1600px) {
    .wrap { max-width: 1440px; }
    .hero .wrap > div { max-width: 960px; }
    .hero .wrap { padding-top: 88px; padding-bottom: 88px; }
    section.block { padding: 64px 0 72px; }
    h1 { font-size: 68px; }
    .lead { font-size: 21px; max-width: 640px; }
    .btn { font-size: 16px; padding: 14px 24px; }
    .btn-sm { font-size: 14px; padding: 9px 15px; }
    .pillars { gap: 28px; }
    .pillar { padding: 34px 32px 28px; }
    .pillar h3 { font-size: 20px; }
    .pillar p { font-size: 16px; }
  }
  @media (max-width: 520px) { .wrap { padding: 0 20px; } }