/* Shared shell for the static pages (acerca, contacto, terminos, privacidad).
   Extracted from privacidad.html so the four pages cannot drift apart. */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg: #0f1117;
      --surface: #1a1d2e;
      --border: rgba(255,255,255,0.06);
      --teal: #00c896;
      --text: #e2e8f0;
      --text-muted: #8892a4;
      --text-dim: #4a5568;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }
    header {
      background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
      padding: 1.5rem;
      border-bottom: 1px solid rgba(0,200,150,0.15);
    }
    .header-inner {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      font-size: 1.4rem;
      font-weight: 800;
      background: linear-gradient(90deg, var(--teal), #38bdf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      text-decoration: none;
    }
    .logo span { font-weight: 300; opacity: 0.7; }
    .back-link {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-decoration: none;
    }
    .back-link:hover { color: var(--teal); }
    main {
      max-width: 800px;
      width: 100%;
      margin: 0 auto;
      padding: 2.5rem 1.5rem;
      flex: 1;
    }
    h1 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
      color: var(--text);
    }
    .updated {
      font-size: 0.82rem;
      color: var(--text-dim);
      margin-bottom: 2.5rem;
    }
    h2 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--teal);
      margin: 2rem 0 0.75rem;
    }
    p, li {
      font-size: 0.92rem;
      line-height: 1.7;
      color: var(--text-muted);
    }
    ul {
      padding-left: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }
    a { color: var(--teal); text-decoration: none; }
    a:hover { text-decoration: underline; }
    .divider {
      border: none;
      border-top: 1px solid var(--border);
      margin: 2rem 0;
    }
    footer {
      background: var(--surface);
      border-top: 1px solid var(--border);
      padding: 1rem 1.5rem;
      font-size: 0.8rem;
      color: var(--text-dim);
      text-align: center;
    }