/* Estudia.tech — Guías SEO (se apoya en css/landing.css) */
.guide__head { padding-block: clamp(36px, 7vh, 80px) clamp(32px, 5vh, 56px); border-bottom: 1px solid var(--line); }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--mute); margin-bottom: 28px; }
.crumbs a { color: var(--dim); text-decoration: none; }
.crumbs a:hover { color: var(--signal); }
.crumbs [aria-current] { color: var(--paper); }
.guide__h1 { font-size: clamp(2.3rem, 5.6vw, 5.2rem); line-height: .94; font-weight: 840; font-stretch: 72%; text-transform: uppercase; letter-spacing: -.01em; max-width: 20ch; text-wrap: balance; }
.guide__lede { margin-top: 22px; font-size: clamp(17px, 1.45vw, 20px); color: var(--dim); max-width: 62ch; }
.facts-row { display: flex; flex-wrap: wrap; margin-top: 32px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); width: fit-content; max-width: 100%; }
.facts-row > div { padding: 14px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 120px; display: flex; flex-direction: column-reverse; }
.facts-row dd { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 840; font-stretch: 70%; line-height: 1; color: var(--paper); font-variant-numeric: tabular-nums; }
.facts-row dt { color: var(--mute); margin-top: 6px; font-size: 11px; }
.guide__cta { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px 22px; }
.guide__fine { color: var(--mute); font-size: 11px; }

.guide__body { display: grid; gap: 48px; padding-block: clamp(40px, 7vh, 80px); }
@media (min-width: 1024px) { .guide__body { grid-template-columns: minmax(0, 1fr) 300px; gap: 64px; align-items: start; } }

.prose { max-width: 760px; min-width: 0; }
.prose section + section { margin-top: clamp(44px, 7vh, 72px); }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1; font-weight: 820; font-stretch: 76%; text-transform: uppercase; letter-spacing: -.005em; margin-bottom: 18px; scroll-margin-top: 90px; }
.prose p, .prose li { color: var(--dim); font-size: 17px; line-height: 1.65; }
.prose p + p, .prose p + .tbl-wrap, .prose .tbl-wrap + p, .prose p + ul, .prose p + ol { margin-top: 14px; }
.prose a { color: var(--signal); text-underline-offset: 3px; }
.prose b { color: var(--paper); }
.callout { margin-top: 18px !important; padding: 14px 18px; border-left: 2px solid var(--signal); background: rgba(var(--signal-rgb), .05); font-size: 15px !important; }
.note { margin-top: 14px; color: var(--mute) !important; font-size: 14px !important; }

.steps { counter-reset: s; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding-left: 48px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--signal); color: var(--signal); display: grid; place-items: center; font-family: var(--f-mono); font-size: 12px; font-weight: 700; }

.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; }
.tbl th, .tbl td { padding: 11px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.tbl thead th { font-family: var(--f-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--mute); font-weight: 500; }
.tbl tbody th { font-weight: 600; color: var(--paper); }
.tbl small { display: block; color: var(--mute); font-weight: 400; font-size: 13px; margin-top: 2px; }
.tbl .num { text-align: right; font-family: var(--f-mono); color: var(--paper); width: 90px; }
.tbl .bar-col { width: 34%; }
.tbl .bar { display: block; height: 6px; width: var(--w); background: rgba(150, 178, 226, .3); }
.tbl tr.is-key .bar { background: var(--signal); }
.tbl tr.is-key th { color: var(--signal); }
.tbl tfoot th, .tbl tfoot td { border-bottom: 0; font-weight: 700; color: var(--paper); }
.keytag { display: inline-block; margin-left: 8px; padding: 2px 6px; background: var(--signal); color: var(--on-signal); font-family: var(--f-mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; vertical-align: middle; }
@media (max-width: 560px) { .tbl .bar-col { display: none; } }

.cards { display: grid; gap: 10px; margin-top: 16px; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
.card { display: flex; flex-direction: column; gap: 6px; height: 100%; padding: 18px; border: 1px solid var(--line-2); text-decoration: none; transition: border-color .2s, background-color .2s; }
.card:hover { border-color: var(--signal); background: rgba(var(--signal-rgb), .04); }
.card__k { color: var(--signal); }
.card b { font-size: 17px; line-height: 1.25; }
.card span:last-child { color: var(--mute); font-size: 14px; line-height: 1.45; }

.pq { display: grid; gap: 14px; counter-reset: q; }
.pq__item { padding: 20px; border: 1px solid var(--line); background: rgba(7, 14, 27, .6); }
.pq__m { color: var(--signal); }
.pq__stem { margin-top: 8px !important; color: var(--paper) !important; font-weight: 600; font-size: 18px !important; line-height: 1.4 !important; }
.pq__opts { display: grid; gap: 6px; margin-top: 14px; }
@media (min-width: 640px) { .pq__opts { grid-template-columns: 1fr 1fr; } }
.pq__opts li { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--line); font-size: 15.5px; color: var(--paper); }
.pq__opts .bub { width: 26px; height: 26px; font-size: 11px; }
.pq__ans { margin-top: 12px; }
.pq__ans summary { cursor: pointer; color: var(--signal); font-weight: 600; font-size: 15px; list-style: none; display: inline-flex; align-items: center; gap: 8px; min-height: 36px; }
.pq__ans summary::-webkit-details-marker { display: none; }
.pq__ans summary::before { content: '+'; font-family: var(--f-mono); }
.pq__ans[open] summary::before { content: '–'; }
.pq__ans p { margin-top: 8px; padding: 12px 14px; border-left: 2px solid var(--ok); background: rgba(62, 224, 161, .06); font-size: 15.5px !important; }

.prose .qa summary { padding: 18px 0; }
.prose .qa__a { padding-left: 42px; padding-right: 0; }
.endcta { margin-top: clamp(48px, 8vh, 80px); padding: clamp(24px, 4vw, 40px); }
.endcta h2 { margin-bottom: 10px; }
.endcta p { margin-bottom: 22px; }

.side { position: sticky; top: calc(var(--navh) + 24px); border-top: 1px solid var(--line); }
.side__k { color: var(--mute); padding: 14px 0; }
.side ul { display: grid; }
.side a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); color: var(--dim); text-decoration: none; font-size: 15px; font-weight: 600; }
.side a:hover { color: var(--signal); }
.side .ic { width: 16px; height: 16px; flex: none; transition: transform .3s var(--ease); }
.side a:hover .ic { transform: translateX(3px); }
@media (max-width: 1023px) { .side { position: static; } }
.prose a.btn--signal { color: var(--on-signal); text-decoration: none; }