.container {
    width: 100%;
    max-width: 430px;
    margin: 0 auto;
    padding: 18px 16px 36px;
  }
  
  .section {
    margin: 24px 0;
  }
  
  .section__row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
  }
  
  /* Grilles */
  
  .grid {
    display: grid;
    gap: 12px;
  }
  
  .grid--2 {
    grid-template-columns: 1fr 1fr;
  }
  
  /* Footer */
  
  .site-footer{
    width: 100vw;
    margin-left: calc(50% - 50vw); /* casse les contraintes de layout */
    background: #0b1220;
    color: rgba(255,255,255,.9);
    padding: 72px 0 32px;
  }
  
  
  .footer__wrap{
    width: min(1200px, 92vw);
    margin: 0 auto;
  }
  
  
  .footer__top{
    display: grid;
    grid-template-columns: 1.2fr 1.6fr 1fr;
    gap: clamp(20px, 4vw, 40px);
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,.12);
  }
  
  .footer__brand{
    display: grid;
    gap: 14px;
    align-content: start;
  }
  
  .footer__logo{
    display: inline-flex;
    flex-direction: column;
    gap: 6px;
    text-decoration: none;
    color: #fff;
  }
  
  .footer__logoMark{
    font-weight: 800;
    letter-spacing: .02em;
    text-transform: uppercase;
    line-height: .92;
    font-size: 22px;
  }
  
  .footer__logoSub{
    font-size: 13px;
    letter-spacing: .18em;
    text-transform: uppercase;
    opacity: .85;
  }
  
  .footer__desc{
    margin: 0;
    color: rgba(255,255,255,.75);
    max-width: 44ch;
  }
  
  .footer__social{
    list-style: none;
    padding: 0;
    margin: 6px 0 0;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
  }
  
  .footer__social a{
    color: rgba(255,255,255,.85);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,.22);
  }
  
  .footer__social a:hover{
    color: #fff;
    border-bottom-color: rgba(255,255,255,.55);
  }
  
  .footer__nav{
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  
  .footer__title{
    margin: 0 0 12px;
    font-size: 14px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: rgba(255,255,255,.92);
  }
  
  .footer__list{
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
  }
  
  .footer__list a{
    color: rgba(255,255,255,.75);
    text-decoration: none;
  }
  
  .footer__list a:hover{
    color: #fff;
    text-decoration: underline;
  }
  
  .footer__newsletter{
    display: grid;
    gap: 10px;
    align-content: start;
  }
  
  .footer__descSmall{
    margin: 0;
    color: rgba(255,255,255,.75);
  }
  
  .footer__form{
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    margin-top: 6px;
  }
  
  .footer__form input{
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.16);
    color: #fff;
    padding: 12px 12px;
    border-radius: 12px;
    outline: none;
  }
  
  .footer__form input::placeholder{
    color: rgba(255,255,255,.55);
  }
  
  .footer__form input:focus{
    border-color: rgba(255,255,255,.38);
  }
  
  .footer__form button{
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.18);
    background: rgba(255,255,255,.12);
    color: #fff;
    cursor: pointer;
  }
  
  .footer__form button:hover{
    background: rgba(255,255,255,.18);
  }
  
  .footer__fineprint{
    margin: 4px 0 0;
    font-size: 12px;
    color: rgba(255,255,255,.6);
  }
  
  .footer__bottom{
    padding-top: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
  }
  
  .footer__copyright{
    margin: 0;
    color: rgba(255,255,255,.62);
    font-size: 13px;
  }
  
  .footer__backtop{
    color: rgba(255,255,255,.85);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,.22);
  }
  
  .footer__backtop:hover{
    color: #fff;
    border-bottom-color: rgba(255,255,255,.55);
  }
  
  /* Accessibilité: texte caché mais lisible par lecteurs d’écran */
  .sr-only{
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  
  /* Responsive */
  @media (max-width: 900px){
    .footer__top{
      grid-template-columns: 1fr;
    }
    .footer__nav{
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }
  
  @media (max-width: 520px){
    .footer__nav{
      grid-template-columns: 1fr;
    }
    .footer__form{
      grid-template-columns: 1fr;
    }
  }