:root{
    --mobile-top-shell-header-height:68px;
    --mobile-top-shell-safe-top:env(safe-area-inset-top, 0px);
    --mobile-top-shell-header-safe-height:calc(var(--mobile-top-shell-header-height) + var(--mobile-top-shell-safe-top));
  }
  .about-install-wrap{
    max-width:920px;
    margin:0 auto;
  }
  .about-install-panel{
    display:grid;
    gap:14px;
  }
  .about-install-panel h1{
    margin:0;
    font-size:1.32rem;
    line-height:1.25;
    color:var(--ui-text);
  }
  .about-install-panel h2{
    margin:0;
    font-size:1.04rem;
    color:var(--ui-text);
  }
  .install-intro{
    color:var(--ui-muted);
    line-height:1.6;
  }
  .install-options{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:14px;
  }
  .install-card{
    display:grid;
    gap:12px;
    padding:16px;
    border:1px solid rgba(15,23,42,0.08);
    border-radius:14px;
    background:linear-gradient(180deg,#ffffff 0%,#fafbff 100%);
  }
  .install-card-header{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .install-card-icon{
    width:36px;
    height:36px;
    display:grid;
    place-items:center;
    border-radius:12px;
    background:rgba(11,95,255,0.08);
    color:var(--ui-primary);
    flex:0 0 auto;
  }
  .install-card-icon i,
  .install-card-icon svg{
    width:19px;
    height:19px;
  }
  .install-card-title{
    display:grid;
    gap:2px;
  }
  .install-card-title h2{
    font-size:1rem;
  }
  .install-card-title p{
    font-size:0.88rem;
    color:var(--ui-muted);
  }
  .install-steps{
    margin:0;
    padding-left:22px;
    display:grid;
    gap:8px;
  }
  .install-steps li{
    padding-left:2px;
    line-height:1.48;
  }
  .install-note{
    padding:10px 12px;
    border-radius:12px;
    background:rgba(11,95,255,0.06);
    color:var(--ui-muted);
    font-size:0.88rem;
    line-height:1.5;
  }
  .about-install-panel p,
  .about-install-panel li{
    margin:0;
    color:var(--ui-text);
  }
  .about-install-panel ul{
    margin:0;
    padding-left:18px;
  }
  .about-install-panel .install-intro,
  .about-install-panel .install-card-title p,
  .about-install-panel .install-note{
    color:var(--ui-muted);
  }
  .about-install-panel .divider{
    height:1px;
    background:var(--ui-border);
    margin:2px 0 6px;
  }
  .image-steps{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:16px;
    margin-top:2px;
    align-items:start;
  }
  .step-card{
    background:linear-gradient(180deg,#ffffff 0%, #fafbff 100%);
    border:1px solid rgba(15,23,42,0.08);
    border-radius:14px;
    padding:12px;
    display:grid;
    gap:10px;
  }
  .step-label{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:fit-content;
    min-width:62px;
    padding:5px 9px;
    border-radius:999px;
    background:rgba(11,95,255,0.08);
    color:var(--ui-primary);
    font-size:0.76rem;
    font-weight:700;
  }
  .step-card img{
    width:100%;
    height:auto;
    display:block;
    border-radius:12px;
    border:1px solid rgba(15,23,42,0.08);
    background:#ffffff;
  }
  .step-card p{
    font-size:0.88rem;
    color:var(--ui-muted);
    line-height:1.5;
  }
  @media (max-width:720px){
    .install-card{
      padding:14px;
      border-radius:12px;
    }
  }