/* Guías / artículos */
.container--narrow { max-width: 760px; }
.article { padding-bottom: 24px; }
.article h1 { margin-top: 12px; font-size: clamp(1.9rem, 4vw, 2.7rem); }
.article h2 { font-size: 1.5rem; margin-top: 2.2em; }
.article p, .article li { font-size: 1.05rem; }
.article ul, .article ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.article li { margin-bottom: .5em; }
.crumbs { margin-top: 40px; font-size: .9rem; color: var(--muted); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--green-700); }
.crumbs span { margin: 0 6px; }
.article__meta { color: var(--muted); font-size: .9rem; }
.article__lead { font-size: 1.2rem !important; color: var(--ink); line-height: 1.55; border-left: 4px solid var(--green-600); padding-left: 16px; margin: 24px 0 8px; }
.formula { background: var(--navy-100); color: var(--navy-900); font-family: var(--font-head); font-weight: 700;
  padding: 18px 20px; border-radius: var(--radius-sm); margin: 0 0 1.2em; font-size: 1.05rem; }
table.data { width: 100%; border-collapse: collapse; margin: 0 0 1.4em; font-size: 1rem; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
table.data td { padding: 12px 16px; border-bottom: 1px solid var(--line); }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); white-space: nowrap; }
table.data tr.total td { font-weight: 700; color: var(--ink); background: var(--green-100); border-bottom: 0; }
.cta-box { display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; margin: 2.4em 0; }
.cta-box h3 { margin-bottom: .3em; }
.cta-box p { color: var(--muted); margin: 0; font-size: .98rem !important; max-width: 470px; }
.cta-box--free { background: var(--green-100); border-color: rgba(13,130,87,.25); }
.cta-box__buy { display: flex; align-items: center; gap: 16px; }
.disclaimer { color: var(--muted); font-size: .9rem !important; font-style: italic; }
.sources-title { font-size: 1.1rem !important; }
.sources li { font-size: .92rem !important; }
.guides { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.guide-card { display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: inherit; background: #fff; transition: box-shadow .15s, transform .15s; }
.guide-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.guide-card p { color: var(--muted); }
.guide-card__more { margin-top: auto; font-weight: 600; color: var(--green-700); }
@media (max-width: 860px) { .guides { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .cta-box { padding: 22px 18px; } .cta-box__buy { width: 100%; justify-content: space-between; } table.data td { padding: 10px 12px; } }
.guide-card .kit__tag { align-self: flex-start; }