*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Poppins',system-ui,sans-serif;color:#1a1a1a;background:#f8faf5;line-height:1.7;-webkit-text-size-adjust:100%}
.itv-wrap{max-width:800px;margin:0 auto;padding:16px}
.itv-header{text-align:center;padding:24px 0 16px}
.itv-header h1{font-size:1.5rem;font-weight:700;color:#1a1a1a;line-height:1.3}
.itv-header .itv-sub{color:#666;font-size:.875rem;margin-top:4px}
.itv-brand{color:var(--c-primary);font-weight:600;text-decoration:none}
.itv-breadcrumb{font-size:.8rem;color:#666;margin-top:8px;margin-bottom:16px}
.itv-breadcrumb a{color:var(--c-primary);text-decoration:none}
.itv-breadcrumb a:hover{text-decoration:underline}
.itv-card{background:#fff;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.08);padding:20px;margin-bottom:16px}
.itv-card h2{font-size:1.1rem;font-weight:600;margin-bottom:12px;color:#1a1a1a}
.itv-card h3{font-size:1rem;font-weight:600;margin:16px 0 8px;color:#333}
.itv-card p{color:#444;font-size:.9rem;margin-bottom:8px}
.itv-search{width:100%;padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;font-family:inherit;outline:none;transition:border-color .2s}
.itv-search:focus{border-color:var(--c-primary)}
.itv-grupo-list{list-style:none}
.itv-grupo-list li{margin-bottom:8px}
.itv-grupo-list a{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;min-height:44px;background:#f9f9f9;border-radius:8px;text-decoration:none;color:#1a1a1a;font-size:.9rem;transition:background .2s}
.itv-grupo-list a:hover{background:#f0f7e8}
.itv-grupo-list .itv-count{color:#666;font-size:.8rem}
.itv-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px}
.itv-def-table{width:100%;border-collapse:collapse;font-size:.85rem;min-width:400px}
.itv-def-table th{text-align:left;padding:8px;background:#f5f5f5;font-weight:600;border-bottom:2px solid #e0e0e0}
.itv-def-table td{padding:8px;border-bottom:1px solid #eee;vertical-align:top}
.itv-def-table tr:hover{background:#fafff5}
.itv-sev-cell{white-space:nowrap}
.itv-sev{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.7rem;font-weight:600;color:#fff;white-space:nowrap;cursor:help}
.itv-dl{background:var(--c-dl);color:#000}
.itv-dg{background:var(--c-dg)}
.itv-dmg{background:var(--c-dmg)}
.itv-metodo{background:#f5f7fa;border-radius:8px;padding:16px;font-size:.85rem;color:#555;margin:12px 0;line-height:1.7}
.itv-editorial{margin-top:16px}
.itv-editorial h2{font-size:1.1rem;color:#1a1a1a;margin-bottom:8px}
.itv-editorial p,.itv-editorial li{font-size:.9rem;color:#444;line-height:1.7}
.itv-editorial ul{margin-left:20px;margin-bottom:12px}
.itv-share{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.itv-share a,.itv-share button{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;min-height:44px;border-radius:8px;font-size:.85rem;font-weight:500;text-decoration:none;cursor:pointer;border:none;font-family:inherit}
.itv-share .itv-wa{background:#25D366;color:#fff}
.itv-share .itv-copy{background:#e8e8e8;color:#333}
.itv-faq{margin-top:20px}
.itv-faq details{border-bottom:1px solid #eee;padding:12px 0}
.itv-faq summary{font-weight:600;font-size:.9rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:44px}
.itv-faq summary::-webkit-details-marker{display:none}
.itv-faq summary::after{content:'+';font-size:1.2rem;color:#888}
.itv-faq details[open] summary::after{content:'-'}
.itv-faq .itv-faq-a{padding:8px 0;font-size:.85rem;color:#555;line-height:1.7}
.itv-cta{background:linear-gradient(135deg,#4d7a17,#3d6412);border-radius:12px;padding:20px;text-align:center;color:#fff;margin-top:20px}
.itv-cta h3{font-size:1rem;margin-bottom:8px}
.itv-cta p{font-size:.85rem;opacity:.9;margin-bottom:12px}
.itv-cta a{display:inline-flex;align-items:center;padding:10px 24px;min-height:44px;background:#fff;color:#333;border-radius:8px;font-weight:600;text-decoration:none;font-size:.9rem}
.itv-footer{text-align:center;padding:24px 0;font-size:.75rem;color:#767676}
.itv-footer a{color:var(--c-primary)}
.itv-term{text-decoration:underline dotted #999;text-underline-offset:3px;cursor:help;font-style:normal}
.itv-tip{position:absolute;z-index:1000;background:#333;color:#fff;font-size:.8rem;line-height:1.5;padding:8px 12px;border-radius:6px;box-shadow:0 2px 8px rgba(0,0,0,.2);pointer-events:none;animation:itv-tip-in .15s ease-out}
@keyframes itv-tip-in{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
.itv-disc{font-size:.75rem;color:#767676;margin-top:16px;line-height:1.5}
.itv-tech{border-left:4px solid var(--c-primary);background:linear-gradient(135deg,#f8faf5,#fff);padding:20px;border-radius:0 12px 12px 0}
.itv-tech h2{font-size:1.1rem;color:#1a1a1a;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.itv-formula{background:#fff;border:1px solid #e8e8e8;border-radius:8px;padding:16px 20px;margin:12px 0;text-align:center}
.itv-formula-row{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.itv-formula-row:last-child{margin-bottom:0}
.itv-var{font-weight:700;font-size:1.3rem;color:#1a1a1a;font-style:italic;font-family:Georgia,serif}
.itv-eq{font-size:1.3rem;color:#666}
.itv-frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle}
.itv-frac-num{border-bottom:2px solid #333;padding:0 8px 4px;font-size:1rem;font-family:Georgia,serif}
.itv-frac-den{padding:4px 8px 0;font-size:1rem;font-family:Georgia,serif}
.itv-mul{font-size:1.1rem;color:#666;padding:0 2px}
.itv-formula-label{font-size:.8rem;color:#666;margin-top:8px;text-align:center}
.itv-formula-desc{font-size:.8rem;color:#555;line-height:1.6;margin-top:12px;padding-top:12px;border-top:1px solid #eee}
.itv-limits{display:flex;flex-direction:column;gap:0;margin-top:12px;border:1px solid #e8e8e8;border-radius:8px;overflow:hidden}
.itv-limit{display:flex;align-items:baseline;gap:12px;padding:10px 14px;background:#fff;border-bottom:1px solid #f0f0f0}
.itv-limit:last-child{border-bottom:none}
.itv-limit:nth-child(even){background:#fafafa}
.itv-limit-val{font-size:1rem;font-weight:700;color:var(--c-primary);min-width:70px;flex-shrink:0}
.itv-limit-label{font-size:.85rem;color:#333;line-height:1.4}
.itv-limit-cond{font-size:.78rem;color:#888;margin-left:4px}
.itv-sec-link{display:block;padding:10px 14px;min-height:44px;background:#f9f9f9;border-radius:8px;margin-bottom:6px;text-decoration:none;color:#1a1a1a;font-size:.9rem;transition:background .2s}
.itv-sec-link:hover{background:#f0f7e8}
.itv-sec-link .itv-code{font-weight:700;color:var(--c-primary);margin-right:8px}
.itv-related-link{display:block;padding:10px 12px;min-height:44px;background:#f8f8f8;border-radius:6px;text-decoration:none;color:#333;font-size:.85rem;transition:background .15s}
.itv-related-link:hover{background:#eef}
.skip-link{position:absolute;top:-40px;left:0;background:var(--c-primary);color:#fff;padding:8px 16px;z-index:100;font-size:.9rem;text-decoration:none;border-radius:0 0 4px 0}
.skip-link:focus{top:0}
@media(max-width:600px){
  .itv-wrap{padding:0 16px}
  .itv-header{padding:20px 0 16px}
  .itv-header h1{font-size:1.25rem;line-height:1.4}
  .itv-header .itv-sub{font-size:.875rem;margin-top:8px}
  .itv-card{padding:20px 16px;margin-bottom:24px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
  .itv-card h2{font-size:1.05rem;margin-bottom:14px}
  .itv-card p{font-size:.9rem;margin-bottom:12px;line-height:1.7}
  .itv-def-table{font-size:.85rem;min-width:0}
  .itv-def-table thead{display:none}
  .itv-def-table tr{display:flex;flex-wrap:wrap;padding:12px 10px;border-bottom:1px solid #eee;gap:4px}
  .itv-def-table td{padding:0;border:none}
  .itv-def-table td:first-child{font-size:.82rem;order:0}
  .itv-def-table td:nth-child(3){order:1;margin-left:auto;display:flex;flex-direction:column;align-items:flex-end;gap:4px}
  .itv-def-table td:nth-child(2){order:2;width:100%;margin-top:6px;line-height:1.6}
  .itv-sev-cell{white-space:normal}
  .itv-sev{padding:3px 8px;font-size:.75rem;display:block;width:fit-content;margin-bottom:0}
  .itv-sev:last-child{margin-bottom:0}
  .itv-tech{padding:18px 14px}
  .itv-tech h2{font-size:1rem}
  .itv-formula{padding:14px 12px}
  .itv-formula-row{gap:8px}
  .itv-formula-label{font-size:.85rem}
  .itv-formula-desc{font-size:.85rem}
  .itv-var{font-size:1.05rem}
  .itv-eq{font-size:1.05rem}
  .itv-frac-num,.itv-frac-den{font-size:.88rem;padding:0 6px}
  .itv-limit{padding:12px 14px;gap:10px}
  .itv-limit-val{font-size:.95rem;min-width:60px}
  .itv-limit-label{font-size:.875rem;line-height:1.5}
  .itv-limit-cond{font-size:.82rem}
  .itv-metodo{padding:16px;font-size:.875rem;line-height:1.7}
  .itv-sec-link{padding:14px 16px;font-size:.9rem;margin-bottom:10px}
  .itv-grupo-list li{margin-bottom:8px}
  .itv-grupo-list a{padding:14px 16px;font-size:.9rem}
  .itv-grupo-list .itv-count{font-size:.85rem}
  .itv-share{flex-direction:column;gap:10px}
  .itv-share a,.itv-share button{justify-content:center;width:100%}
  .itv-faq details{padding:16px 0}
  .itv-faq summary{font-size:.9rem;min-height:48px}
  .itv-faq .itv-faq-a{font-size:.875rem;padding:12px 0;line-height:1.7}
  .itv-breadcrumb{font-size:.875rem;margin-bottom:14px}
  .itv-editorial p,.itv-editorial li{font-size:.9rem;line-height:1.7}
  .itv-cta{padding:20px 16px}
  .itv-cta h3{font-size:.95rem}
  .itv-cta p{margin-bottom:14px}
  .itv-cta a{padding:10px 20px;font-size:.9rem}
  .itv-related-link{padding:14px 16px;font-size:.9rem;margin-bottom:8px}
  table:not(.itv-def-table){font-size:.85rem}
  table:not(.itv-def-table) th,
  table:not(.itv-def-table) td{padding:10px 6px}
  select{max-width:100%;font-size:.9rem;padding:10px}
  .itv-limits{margin-top:14px}
  .itv-disc{font-size:.82rem;margin-top:16px}
  .itv-footer{padding:32px 0;font-size:.82rem}
}