body {
            margin: 0;
            min-height: 100vh;
            display: grid;
            place-items: center;
            padding: 24px;
            background: linear-gradient(180deg, #f8f2e8 0%, #efe7db 100%);
            color: #1f2933;
            font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
          }
          main {
            width: min(760px, 100%);
            padding: 28px;
            border-radius: 24px;
            background: #fffdf9;
            border: 1px solid rgba(31, 41, 51, 0.12);
            box-shadow: 0 24px 60px rgba(31, 41, 51, 0.12);
          }
          h1 { margin: 0 0 12px; }
          p { line-height: 1.6; color: #5f6c7b; }
          a {
            display: block;
            margin-top: 12px;
            padding: 14px 16px;
            border-radius: 16px;
            border: 1px solid rgba(31, 41, 51, 0.12);
            color: inherit;
            text-decoration: none;
            background: #fff;
          }
          code {
            background: rgba(15, 118, 110, 0.08);
            padding: 2px 6px;
            border-radius: 8px;
          }