nav.main-nav {
              text-align: center;
              margin: 0.5rem 0 1.2rem;
            }
            nav.main-nav a {
              color: var(--accent);
              text-decoration: none;
              font-weight: 500;
              margin: 0 0.5em;
              transition: color 0.18s;
            }
            nav.main-nav a[aria-current="page"] {
              color: var(--accent-soft);
              font-weight: bold;
            }
            nav.main-nav a:hover {
              color: var(--ink);
              text-decoration: underline;
            }
            header.site-header {
              text-align: center;
              margin-bottom: 0.5rem;
            }
      :root {
        color-scheme: light;
        --paper: #f6f4f1;
        --linen: #e2eaf2;
        --ink: #1e2428;
        --muted: #6e6a64;
        --border: #c5bfb5;
        --accent: #4875a0;
        --accent-soft: #9ab8d4;
        --card: rgba(248, 250, 252, 0.88);
      }

      * {
        box-sizing: border-box;
      }

      body {
        margin: 0;
        min-height: 100vh;
        font-family: Georgia, "Times New Roman", serif;
        color: var(--ink);
        background:
          radial-gradient(circle at top left, rgba(168, 200, 232, 0.45), transparent 28%),
          radial-gradient(circle at bottom right, rgba(72, 117, 160, 0.16), transparent 30%),
          linear-gradient(135deg, var(--paper) 0%, var(--linen) 100%);
      }

      .page-shell {
        width: min(1080px, calc(100% - 2rem));
        margin: 0 auto;
        padding: 3.25rem 0 4rem;
      }

      .hero {
        text-align: center;
        padding: 0 1rem 2.5rem;
      }

      .eyebrow {
        margin: 0 0 0.75rem;
        color: var(--accent);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        font-size: 0.8rem;
      }

      h1 {
        margin: 0;
        font-size: clamp(2.6rem, 6vw, 4.8rem);
        letter-spacing: 0.03em;
        line-height: 1.06;
        font-weight: normal;
      }

      .lede {
        width: min(836px, 100%);
        margin: 1.25rem auto 0;
        font-size: clamp(1.06rem, 2vw, 1.28rem);
        line-height: 1.8;
        color: var(--muted);
      }

      /* Base grid: 3 columns */
      .features {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
        margin-top: 1rem;
      }

      .feature-card {
        min-width: 0;
        display: flex;
        flex-direction: column;
      }
      .feature-image {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 10;
        border-radius: 12px;
        border: 1px solid rgba(72, 117, 160, 0.18);
        background-color: #edf2f8;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .feature-image-link {
        display: block;
        width: 100%;
        height: 100%;
      }
      .feature-image svg {
        width: 100%;
        height: auto;
        max-width: 100%;
        max-height: 100%;
        display: block;
      }
      .feature-image img {
        width: 100%;
        height: auto;
        display: block;
      }

      .ad-placeholder {
        width: 300px;
        height: 250px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: center;
        border: 2.5px dashed var(--border);
        border-radius: 18px;
        background: var(--card);
        color: var(--muted);
        font-size: 1.18rem;
        font-family: Georgia, "Times New Roman", serif;
        text-align: center;
        box-shadow: 0 6px 24px rgba(40, 72, 110, 0.07);
        position: relative;
        transition: box-shadow 0.18s;
        min-width: 0;
        min-height: 0;
      }
      .ad-placeholder:hover {
        box-shadow: 0 12px 32px rgba(40, 72, 110, 0.13);
      }
/* Responsive: 2 columns below 900px, 1 column below 600px */

@media (max-width: 900px) {
  .features {
    grid-template-columns: 1fr 1fr !important;
    justify-items: center;
  }
  .feature-card {
    min-width: 0;
    max-width: 420px;
  }
  .feature-image {
    max-width: 420px;
  }
  .ad-placeholder {
    min-width: 300px;
    width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 600px) {
  .features {
    grid-template-columns: 1fr !important;
  }
  .ad-placeholder {
    width: 300px;
    min-width: 0;
    margin-left: auto;
    margin-right: auto;
    grid-column: 1;
  }
}
      .feature-link {
        display: inline-flex;
        align-items: center;
        gap: 0.45rem;
        align-self: flex-start;
        margin-top: auto;
        padding: 0.72rem 1.1rem;
        border-radius: 999px;
        background: var(--accent);
        color: #f8fafc;
        text-decoration: none;
        letter-spacing: 0.03em;
        transition: transform 0.18s ease, background 0.18s ease;
      }
      .feature-link:hover {
        background: #2d5a8a;
        transform: translateY(-1px);
      }
      .feature-link:focus-visible {
        outline: 3px solid rgba(72, 117, 160, 0.25);
        outline-offset: 3px;
      }