:root{
      --bg:var(--mui-bg-subtle);
      --card:var(--mui-surface);
      --text:var(--mui-text-primary);
      --muted:var(--mui-text-secondary);
      --border:var(--mui-border-default);
      --primary:var(--mui-info-600);
      --primary-dark:var(--mui-info-700);
      --shadow:0 20px 50px rgba(15,23,42,.08);
      --radius:28px;
      --max:1120px;
    }

    *{
      box-sizing:border-box;
    }

    body{
      margin:0;
      font-family:Tahoma,Arial,sans-serif;
      background:
        radial-gradient(circle at top right, rgba(37,99,235,.08), transparent 22%),
        linear-gradient(180deg,var(--mui-bg-subtle) 0%,var(--bg) 100%);
      color:var(--text);
      line-height:2;
    }

    a{
      text-decoration:none;
    }

    .topbar{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:blur(12px);
      background:rgba(255,255,255,.92);
      border-bottom:1px solid var(--border);
    }

    .topbar-inner{
      max-width:var(--max);
      margin:auto;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
    }

    .brand{
      display:flex;
      flex-direction:column;
      color:inherit;
    }

    .brand strong{
      font-size:30px;
      font-weight:900;
    }

    .brand span{
      color:var(--muted);
      font-size:13px;
    }

    .nav{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }

    .nav a{
      color:var(--mui-text-secondary);
      padding:11px 18px;
      border-radius:14px;
      font-weight:800;
      transition:.2s;
    }

    .nav a:hover{
      background:var(--mui-bg-subtle);
      color:var(--primary);
    }

    .nav .active{
      background:var(--primary);
      color:var(--mui-surface);
      box-shadow:0 10px 25px rgba(37,99,235,.18);
    }

    .container{
      max-width:var(--max);
      margin:auto;
      padding:50px 20px 80px;
    }

    .hero-grid{
      display:grid;
      grid-template-columns:380px 1fr;
      gap:22px;
      margin-bottom:26px;
    }

    .hero-side{
      background:linear-gradient(135deg,var(--mui-info-600),var(--mui-info-600));
      color:var(--mui-surface);
      border-radius:32px;
      padding:34px;
      position:relative;
      overflow:hidden;
      box-shadow:var(--shadow);
    }

    .hero-side::before{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      background:rgba(255,255,255,.10);
      border-radius:50%;
      top:-90px;
      right:-90px;
    }

    .hero-side h3{
      position:relative;
      margin:0 0 24px;
      font-size:34px;
      font-weight:900;
    }

    .feature{
      position:relative;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.16);
      border-radius:18px;
      padding:16px 18px;
      margin-bottom:14px;
      font-weight:700;
      line-height:1.9;
      backdrop-filter:blur(4px);
    }

    .hero-main{
      background:var(--card);
      border-radius:32px;
      padding:46px;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }

    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      background:var(--mui-info-soft);
      border:1px solid var(--mui-info-100);
      color:var(--mui-info-700);
      padding:10px 16px;
      border-radius:999px;
      font-size:13px;
      font-weight:900;
      margin-bottom:22px;
    }

    h1{
      margin:0 0 20px;
      font-size:62px;
      line-height:1.15;
      font-weight:900;
      color:var(--mui-text-primary);
    }

    .lead{
      margin:0;
      color:var(--muted);
      font-size:19px;
      line-height:2.1;
    }

    .notice{
      margin-top:28px;
      background:var(--mui-info-soft);
      border:1px solid var(--mui-info-100);
      color:var(--mui-info-700);
      border-radius:20px;
      padding:20px 22px;
      font-weight:800;
      line-height:2;
    }

    .section{
      background:var(--card);
      border-radius:30px;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:42px;
      margin-bottom:24px;
    }

    .section h2{
      margin:0 0 22px;
      font-size:42px;
      font-weight:900;
      color:var(--mui-text-primary);
    }

    .section p{
      margin:0;
      color:var(--mui-text-secondary);
      font-size:18px;
      line-height:2.2;
    }

    .footer{
      text-align:center;
      padding:30px 20px 60px;
      color:var(--muted);
    }

    .footer-links{
      display:flex;
      justify-content:center;
      gap:14px;
      flex-wrap:wrap;
      margin-bottom:18px;
    }

    .footer-links a{
      color:var(--mui-text-secondary);
      font-weight:700;
    }

    .footer-links a:hover{
      color:var(--primary);
    }

    @media(max-width:980px){

      .hero-grid{
        grid-template-columns:1fr;
      }

    }

    @media(max-width:768px){

      .topbar-inner{
        flex-direction:column;
        align-items:flex-start;
      }

      .hero-main,
      .hero-side,
      .section{
        padding:28px;
      }

      h1{
        font-size:42px;
      }

      .section h2{
        font-size:32px;
      }

    }