:root {
      --nda-ink: #17324d;
      --nda-muted: #5b738d;
      --nda-line: #c9d7e8;
      --nda-card: #ffffff;
      --nda-bg: linear-gradient(180deg, #eef4fb 0%, #f9fbfe 100%);
      --nda-accent: #205493;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: "Aptos", "Segoe UI", sans-serif;
      color: var(--nda-ink);
      background: var(--nda-bg);
      line-height: 1.55;
    }

    main {
      max-width: 860px;
      margin: 0 auto;
      padding: 2.25rem 1.25rem 3rem;
    }

    .nda-card {
      background: var(--nda-card);
      border: 1px solid var(--nda-line);
      border-radius: 1.25rem;
      box-shadow: 0 18px 42px rgba(23, 50, 77, 0.08);
      overflow: hidden;
    }

    .nda-hero {
      padding: 1.5rem 1.5rem 1.2rem;
      background:
        radial-gradient(circle at top right, rgba(32, 84, 147, 0.11), transparent 34%),
        linear-gradient(180deg, rgba(239, 246, 255, 0.95), rgba(255, 255, 255, 0.98));
      border-bottom: 1px solid var(--nda-line);
    }

    .nda-kicker {
      display: inline-block;
      margin-bottom: 0.6rem;
      padding: 0.2rem 0.55rem;
      border-radius: 999px;
      background: rgba(32, 84, 147, 0.12);
      color: var(--nda-accent);
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }

    h1 {
      margin: 0 0 0.45rem;
      font-size: clamp(1.8rem, 2.7vw, 2.45rem);
      line-height: 1.15;
    }

    .nda-lede {
      margin: 0;
      color: var(--nda-muted);
      font-size: 1rem;
    }

    .nda-meta {
      display: grid;
      gap: 0.3rem;
      padding: 1rem 1.5rem 0;
      color: var(--nda-muted);
      font-size: 0.95rem;
    }

    .nda-body {
      padding: 1.2rem 1.5rem 1.75rem;
    }

    h2 {
      margin: 1.35rem 0 0.55rem;
      font-size: 1.08rem;
    }

    h2:first-child {
      margin-top: 0;
    }

    p {
      margin: 0.45rem 0 0.8rem;
    }

    ul {
      margin: 0.4rem 0 0.95rem 1.25rem;
      padding: 0;
    }

    li + li {
      margin-top: 0.35rem;
    }

    .nda-callout {
      margin-top: 1rem;
      padding: 0.9rem 1rem;
      border-radius: 0.95rem;
      border: 1px solid rgba(32, 84, 147, 0.18);
      background: rgba(239, 246, 255, 0.7);
    }

    .nda-footer {
      margin-top: 1.3rem;
      color: var(--nda-muted);
      font-size: 0.94rem;
    }

    @media (max-width: 640px) {
      main {
        padding: 1rem 0.8rem 1.5rem;
      }

      .nda-hero,
      .nda-meta,
      .nda-body {
        padding-left: 1rem;
        padding-right: 1rem;
      }
    }