.install-page {
    min-height: 100vh;
    background:
      radial-gradient(circle at top left, rgba(49,125,225,0.12), transparent 34%),
      linear-gradient(180deg, #f7f9fc 0%, #eef2f7 100%);
    color: var(--color-bg-dark);
  }
  
  .install-shell {
    width: min(1180px, calc(100% - 48px));
    margin: 0 auto;
    padding: 28px 0 56px;
  }
  
  .install-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 72px;
    padding: 18px 22px;
    background: rgba(255,255,255,0.86);
    border: 1px solid rgba(0,35,74,0.08);
    border-radius: 24px;
    box-shadow: 0 18px 42px rgba(0,35,74,0.08);
    backdrop-filter: blur(16px);
  }
  
  .install-brand img {
    height: 44px;
    width: auto;
    display: block;
  }
  
  .install-nav {
    display: flex;
    align-items: center;
    gap: 20px;
  }
  
  .install-nav a {
    color: var(--color-bg-dark);
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
  }
  
  .install-nav a:hover {
    color: var(--color-primary);
  }
  
  .install-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 430px;
    gap: 64px;
    align-items: center;
  }
  
  .install-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 18px;
    padding: 9px 13px;
    border-radius: 999px;
    background: rgba(49,125,225,0.12);
    color: var(--color-primary-dark);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  
  .install-badge span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
  }
  
  .install-intro h1 {
    margin: 0 0 18px;
    max-width: 680px;
    color: var(--color-bg-dark);
    font-size: clamp(46px, 6vw, 76px);
    line-height: 0.96;
    letter-spacing: -0.065em;
    font-weight: 500;
  }
  
  .install-intro p {
    max-width: 650px;
    margin: 0;
    color: var(--color-primary-dark);
    font-size: 19px;
    line-height: 1.55;
  }
  
  .install-steps {
    display: grid;
    gap: 14px;
    max-width: 640px;
    margin-top: 34px;
  }
  
  .install-steps div {
    padding: 18px 20px;
    background: rgba(255,255,255,0.74);
    border: 1px solid rgba(0,35,74,0.08);
    border-radius: 18px;
    box-shadow: 0 12px 28px rgba(0,35,74,0.06);
  }
  
  .install-steps strong {
    display: block;
    margin-bottom: 5px;
    color: var(--color-bg-dark);
    font-size: 15px;
  }
  
  .install-steps span {
    display: block;
    color: #64748b;
    line-height: 1.5;
  }
  
  .install-panel {
    padding: 30px;
    border-radius: 28px;
    background:
      radial-gradient(circle at top right, rgba(49,125,225,0.24), transparent 34%),
      var(--color-bg-dark);
    color: white;
    box-shadow: 0 28px 70px rgba(0,35,74,0.28);
  }
  
  .install-panel-label {
    margin-bottom: 12px;
    color: #b8cdf5;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  
  .install-panel h2 {
    margin: 0 0 10px;
    color: white;
    font-size: 32px;
    line-height: 1.05;
  }
  
  .install-panel p {
    margin: 0 0 24px;
    color: #c9d4e5;
    line-height: 1.55;
  }
  
  .install-panel p strong {
    color: white;
  }
  
  .install-form {
    display: grid;
    gap: 12px;
  }
  
  .install-form label {
    color: white;
    font-size: 13px;
    font-weight: 800;
  }
  
  .install-form input {
    width: 100%;
    min-height: 54px;
    padding: 14px 15px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.08);
    color: white;
    font: inherit;
  }
  
  .install-form input::placeholder {
    color: rgba(255,255,255,0.48);
  }
  
  .install-form input:focus {
    outline: none;
    border-color: rgba(255,255,255,0.48);
    box-shadow: 0 0 0 4px rgba(49,125,225,0.28);
  }
  
  .install-submit {
    width: 100%;
    margin-top: 2px;
  }
  
  .selected-store {
    margin-bottom: 16px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
  }
  
  .selected-store span {
    display: block;
    margin-bottom: 5px;
    color: #9fb0c9;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }
  
  .selected-store strong {
    display: block;
    color: white;
    word-break: break-word;
  }
  
  .install-note {
    margin-top: 18px;
    padding: 15px 16px;
    border-radius: 16px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    color: #c9d4e5;
    font-size: 14px;
    line-height: 1.5;
  }
  
  .install-note strong {
    color: white;
  }
  
  .install-trust-list {
    display: grid;
    gap: 11px;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  
  .install-trust-list div {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: #c9d4e5;
    font-size: 14px;
    line-height: 1.5;
  }
  
  .install-trust-list span {
    width: 8px;
    height: 8px;
    margin-top: 7px;
    border-radius: 50%;
    background: var(--color-primary);
    flex-shrink: 0;
  }
  
  @media (max-width: 900px) {
    .install-shell {
      width: min(100% - 36px, 1180px);
    }
  
    .install-header {
      margin-bottom: 42px;
    }
  
    .install-main {
      grid-template-columns: 1fr;
      gap: 34px;
    }
  
    .install-panel {
      max-width: 560px;
    }
  }
  
  @media (max-width: 640px) {
    .install-shell {
      width: min(100% - 28px, 1180px);
      padding-top: 18px;
    }
  
    .install-header {
      align-items: flex-start;
      flex-direction: column;
      gap: 16px;
      padding: 16px;
      margin-bottom: 34px;
    }
  
    .install-brand img {
      height: 38px;
    }
  
    .install-nav {
      width: 100%;
      justify-content: space-between;
    }
  
    .install-intro h1 {
      font-size: clamp(42px, 13vw, 58px);
    }
  
    .install-intro p {
      font-size: 17px;
    }
  
    .install-panel {
      padding: 24px;
    }
  }