:root {
      --bg: #F5F3EF;
      --surface: #FFFFFF;
      --surface-2: #EDEAE4;
      --ink: #1C1917;
      --ink-muted: #6B6560;
      --accent: #C8540A;
      --accent-light: #FEF0E6;
      --green: #2D6A4F;
      --green-light: #E8F5EF;
      --red-light: #FEF2F2;
      --red: #B91C1C;
      --border: #E0DBD4;
      --radius: 10px;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif; background: var(--bg); color: var(--ink); font-size: 16px; line-height: 1.7; }

    header {
      padding: 20px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border);
      background: var(--bg);
      position: sticky;
      top: 0;
      z-index: 10;
    }
    .logo { font-family: Georgia,"Times New Roman",serif; font-size: 20px; color: var(--ink); text-decoration: none; }
    .logo span { color: var(--accent); }
    nav a { font-size: 13px; color: var(--ink-muted); text-decoration: none; margin-left: 20px; }
    nav a:hover { color: var(--ink); }

    .hero {
      max-width: 720px;
      margin: 0 auto;
      padding: 56px 24px 40px;
    }
    .hero-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent);
      background: var(--accent-light);
      padding: 4px 12px;
      border-radius: 99px;
      margin-bottom: 20px;
    }
    h1 {
      font-family: Georgia,"Times New Roman",serif;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.2;
      letter-spacing: -0.3px;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 17px;
      color: var(--ink-muted);
      max-width: 580px;
      margin-bottom: 28px;
    }
    .meta {
      font-size: 13px;
      color: var(--ink-muted);
      padding-top: 20px;
      border-top: 1px solid var(--border);
    }

    .content {
      max-width: 720px;
      margin: 0 auto;
      padding: 48px 24px 80px;
      display: grid;
      grid-template-columns: 1fr 260px;
      gap: 48px;
      align-items: start;
    }

    @media (max-width: 700px) {
      .content { grid-template-columns: 1fr; }
      .sidebar { display: none; }
    }

    .article h2 {
      font-family: Georgia,"Times New Roman",serif;
      font-size: 24px;
      margin: 44px 0 14px;
      color: var(--ink);
    }
    .article h2:first-child { margin-top: 0; }

    .article p {
      font-size: 15px;
      color: var(--ink);
      margin-bottom: 18px;
      line-height: 1.75;
    }

    .article strong { font-weight: 600; }

    .box {
      border-radius: var(--radius);
      padding: 18px 20px;
      margin: 24px 0;
    }
    .box.green { background: var(--green-light); border: 1px solid #B7DFD0; }
    .box.red { background: var(--red-light); border: 1px solid #FECACA; }
    .box.neutral { background: var(--surface-2); border: 1px solid var(--border); }
    .box.accent { background: var(--accent-light); border: 1px solid #F4C49A; }

    .box h3 {
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .box.green h3 { color: var(--green); }
    .box.red h3 { color: var(--red); }
    .box.neutral h3 { color: var(--ink-muted); }
    .box.accent h3 { color: #92400E; }

    .box ul { list-style: none; display: flex; flex-direction: column; gap: 7px; }
    .box ul li { font-size: 14px; padding-left: 18px; position: relative; }
    .box ul li::before { position: absolute; left: 0; }
    .box.green ul li::before { content: '✓'; color: var(--green); font-weight: 700; }
    .box.red ul li::before { content: '✗'; color: var(--red); font-weight: 700; }
    .box.neutral ul li::before { content: '→'; color: var(--ink-muted); }
    .box.accent ul li::before { content: '→'; color: var(--accent); }

    .timeline {
      display: flex;
      flex-direction: column;
      gap: 0;
      margin: 24px 0;
    }
    .timeline-item {
      display: flex;
      gap: 16px;
      padding-bottom: 28px;
      position: relative;
    }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: 18px;
      top: 36px;
      bottom: 0;
      width: 1px;
      background: var(--border);
    }
    .timeline-item:last-child::before { display: none; }

    .timeline-dot {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--ink);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-family: Georgia,"Times New Roman",serif;
    }

    .timeline-content { flex: 1; padding-top: 6px; }
    .timeline-content strong { display: block; font-size: 15px; font-weight: 600; margin-bottom: 4px; }
    .timeline-content p { font-size: 14px; color: var(--ink-muted); margin: 0; line-height: 1.6; }

    .cta-inline {
      background: var(--ink);
      border-radius: 12px;
      padding: 28px;
      margin: 36px 0;
      text-align: center;
    }
    .cta-inline p {
      color: rgba(255,255,255,0.75);
      font-size: 14px;
      margin-bottom: 16px;
    }
    .cta-inline h3 {
      font-family: Georgia,"Times New Roman",serif;
      font-size: 22px;
      color: #fff;
      margin-bottom: 8px;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      font-family: Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
      font-size: 15px;
      font-weight: 600;
      padding: 13px 24px;
      border-radius: var(--radius);
      text-decoration: none;
      transition: background 0.15s;
    }
    .btn-primary:hover { background: #A8430A; }

    /* SIDEBAR */
    .sidebar { position: sticky; top: 80px; }

    .sidebar-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 22px;
      margin-bottom: 16px;
    }
    .sidebar-card h4 {
      font-family: Georgia,"Times New Roman",serif;
      font-size: 17px;
      margin-bottom: 12px;
    }
    .sidebar-card p {
      font-size: 13px;
      color: var(--ink-muted);
      margin-bottom: 14px;
      line-height: 1.6;
    }
    .sidebar-card .btn-primary {
      width: 100%;
      justify-content: center;
      font-size: 14px;
      padding: 11px 16px;
    }

    .toc {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 22px;
    }
    .toc h4 {
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--ink-muted);
      margin-bottom: 12px;
    }
    .toc ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .toc ul li a {
      font-size: 13px;
      color: var(--ink-muted);
      text-decoration: none;
    }
    .toc ul li a:hover { color: var(--accent); }

    footer {
      border-top: 1px solid var(--border);
      padding: 28px 24px;
      text-align: center;
    }
    footer .footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 12px; }
    footer a { font-size: 13px; color: var(--ink-muted); text-decoration: none; }
    footer a:hover { color: var(--ink); }
    .footer-copy { font-size: 12px; color: var(--ink-muted); }

    .divider { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
  
    /* AUTARKIO MOBILE HARDENING */
    body{overflow-x:hidden;}
    img,svg{max-width:100%;height:auto;}
    button,a{touch-action:manipulation;}
    .calc-card,.result-card,.producto-card{max-width:100%;}
    @media (max-width: 520px){
      header{align-items:flex-start;gap:10px;flex-direction:column;}
      nav{display:flex;flex-wrap:wrap;gap:6px;}
      nav a{margin-left:0;padding:6px 8px;background:rgba(255,255,255,.55);border-radius:999px;}
      .options-grid,.options-grid.three{grid-template-columns:1fr;}
      .calc-nav{flex-direction:column-reverse;align-items:stretch;}
      .calc-nav .btn-primary,.calc-nav .btn-secondary{width:100%;justify-content:center;}
      .tabla-consumos{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;}
    }