:root{color-scheme:light;--ink:#302920;--muted:#61594e;--gold:#795618;--paper:#faf7f0;--line:#ded3bd}
    *{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:1rem}body{margin:0;color:var(--ink);background:var(--paper);font:18px/1.75 system-ui,sans-serif}a{color:var(--gold);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--gold);outline-offset:5px}
    .skip{position:absolute;left:1rem;top:-100px;background:white;padding:1rem}.skip:focus{top:1rem}.header{max-width:1100px;margin:auto;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{font:700 28px Georgia,serif;letter-spacing:.12em;text-decoration:none;color:var(--ink)}.header nav{display:flex;gap:24px;font-size:15px}
    main{max-width:800px;padding:55px 28px 65px;margin:auto}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:700;color:var(--gold)}h1,h2,h3{font-family:Georgia,serif;line-height:1.18;font-weight:normal}h1{font-size:clamp(2.3rem,5.5vw,3.6rem);letter-spacing:-.025em;margin:15px 0 24px}h2{font-size:2rem;margin:54px 0 18px}h3{font-size:1.5rem;margin-top:30px}.intro{font-size:21px;line-height:1.6}.meta{font-size:14px;color:var(--muted)}.contents{border-block:1px solid var(--line);padding:22px 0;margin:35px 0}.contents strong{display:block}.contents ul{padding-left:22px;margin-bottom:0}.example{border-left:4px solid #a67a2e;background:#f1eadd;padding:20px 24px;margin:24px 0}.example p:first-child{margin-top:0}.example p:last-child{margin-bottom:0}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:16px}caption{text-align:left;font-weight:700;margin:16px 0}th,td{border-bottom:1px solid var(--line);padding:14px 12px;text-align:left;vertical-align:top}th{background:#eee6d7}.book{border:1px solid #c9b587;padding:28px;margin:44px 0;background:#fffdf8}.book h2{margin-top:8px}.button{display:inline-block;background:var(--ink);color:white;padding:12px 22px;border-radius:5px;text-decoration:none;margin:7px 8px 7px 0}.sources{font-size:15px;color:var(--muted)}footer{border-top:1px solid var(--line);padding:25px;text-align:center;font-size:14px}.small{font-size:15px;color:var(--muted)}li{margin-block:8px}
    @media(max-width:520px){body{font-size:17px}.header{padding:18px}.header nav{gap:12px;font-size:13px}main{padding:32px 20px}.intro{font-size:19px}h2{font-size:1.75rem}.example,.book{padding:18px}th,td{padding:10px 8px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
    @media print{.header nav,.contents,.button{display:none}body{background:white;color:black;font-size:11pt}main{padding:0;max-width:none}h1{font-size:28pt}h2{font-size:20pt;break-after:avoid}.example,.book{break-inside:avoid}a{color:black}}
  
.guide-card{border-block:1px solid var(--line);padding:28px 0;margin:26px 0}.guide-card h2{margin:10px 0;font-size:1.7rem}.cover-mini{width:96px;height:auto;float:right;margin:0 0 20px 24px}.form-field{display:block;width:100%;padding:12px;font:inherit;border:1px solid var(--line);border-radius:5px;background:white}.signup label{display:block;margin:18px 0 7px}.signup button{font:inherit;border:0;cursor:pointer}.signup button:disabled{opacity:.55;cursor:default}.consent{font-size:15px}.status{min-height:2em}.honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.notice{padding:18px;border-left:3px solid var(--gold);background:#f1eadd}.bread{font-size:14px;margin-bottom:24px}.button-secondary{background:none;color:var(--gold);border:1px solid var(--gold)}

.brevo-form{display:block;width:100%;max-width:540px;height:750px;margin:24px auto;border:0;background:#fff}@media(max-width:520px){.brevo-form{height:900px}}

/* Lote editorial: categorías, navegación y hojas de actividad. */
.guides-index{max-width:1100px}.bread{font-size:14px;color:var(--muted);margin-bottom:25px}
.calculator input,.calculator select{display:block;width:100%;font:inherit;padding:10px 12px;border:1px solid #a99b83;border-radius:5px;background:#fff;color:var(--ink);margin:6px 0 18px}.calculator label{display:block;font-weight:600}.calculator .button{font:inherit;border:0;cursor:pointer}.calc-result{padding:16px;background:#eee6d7;border-radius:5px}.calc-error{border-left:4px solid #a02828}.calculator [aria-invalid="true"]{outline:2px solid #a02828}
.category-nav{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0}.category-nav a{border:1px solid #bbab8b;border-radius:30px;padding:8px 18px;text-decoration:none;font-size:15px;font-weight:600}
.category-nav a:hover{background:#eee6d7}.start-guide{background:#ede4d2;border-radius:12px;padding:28px;margin:35px 0 55px}.start-guide h2,.compact-heading{margin-top:0;font-size:1.65rem}
.topic-section{margin-top:60px;scroll-margin-top:24px}.topic-section>h2{margin-top:8px}
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.guide-grid .guide-card{background:#fffdf8;border:1px solid var(--line);border-radius:8px;padding:24px;margin:0;display:flex;flex-direction:column}
.guide-card h3{font-size:1.45rem;line-height:1.3;margin:0 0 15px}.guide-card h3 a{color:var(--ink);text-decoration-thickness:1px}.guide-card p{font-size:16px}.guide-card .meta{font-size:13px;margin:0 0 12px}.card-link{font-size:15px;margin-top:auto}
.worksheet{background:#fffdf8;border:1px dashed #aa9771;padding:20px;margin:26px 0}.worksheet p{margin:12px 0}.worksheet.table-wrap{padding:12px}.related{border-block:1px solid var(--line);margin-top:45px;padding:12px 0 25px}.related h2{margin-top:20px;font-size:1.7rem}
.book-with-cover{display:flow-root}.book-with-cover .cover-mini{margin:0 0 18px 20px;object-fit:contain}.editorial-note{margin:55px 0 0;border-top:1px solid var(--line);font-size:16px}.editorial-note h2{font-size:1.6rem}
@media(max-width:680px){.guide-grid{grid-template-columns:1fr}.start-guide{padding:22px}.category-nav a{padding:8px 13px}.book-with-cover .cover-mini{width:76px;height:auto;margin-left:15px}.header{flex-wrap:wrap}.worksheet{padding:14px}.worksheet table{font-size:14px}.worksheet td,.worksheet th{padding:8px 4px}}
@media print{.category-nav,.article-resources,.related,.editorial-note,footer,.skip{display:none}.worksheet{border:1px solid #999;break-inside:avoid}.guide-grid{display:block}.table-wrap{overflow:visible}table{font-size:10pt}h2,h3{break-after:avoid}tr{break-inside:avoid}a{color:inherit}}