@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 700;font-display:swap;src:url("/matematica/assets/fonts/eb-garamond-latin.woff2") format("woff2")}
@font-face{font-family:"Instrument Sans";font-style:normal;font-weight:400 700;font-stretch:100%;font-display:swap;src:url("/matematica/assets/fonts/instrument-sans-latin.woff2") format("woff2")}

:root {
  --sim-paper: #fff;
  --sim-soft: #edf3f8;
  --sim-ink: #142238;
  --sim-ink-soft: #44546a;
  --sim-blue: #2f6fa6;
  --sim-blue-deep: #214e78;
  --sim-blue-pale: #dceaf5;
  --sim-red: #c04a50;
  --sim-red-pale: #fbecec;
  --sim-green: #2c7a4b;
  --sim-green-pale: #e5f3ea;
  --sim-line: #d7e0e9;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--sim-ink); background: var(--sim-paper); font-family: "Instrument Sans", system-ui, sans-serif; line-height: 1.55; }
button, textarea { font: inherit; }
a { color: var(--sim-blue-deep); }
a:focus-visible, button:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid var(--sim-blue); outline-offset: 2px; }

.skip-link { position: absolute; left: -999px; top: 8px; }
.skip-link:focus { left: 16px; background: var(--sim-paper); padding: 8px 12px; z-index: 10; }

.sim-wrap { width: min(920px, 100% - 32px); margin-inline: auto; }
.sim-header { border-bottom: 1px solid var(--sim-line); }
.sim-header-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 60px; }
.sim-brand { font-weight: 700; letter-spacing: .06em; color: var(--sim-ink); text-decoration: none; }
.sim-back { font-size: .95rem; }

main { padding: 28px 0 56px; }
h1 { font-family: "EB Garamond", Georgia, serif; font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.1; margin: 4px 0 10px; }
h2 { font-family: "EB Garamond", Georgia, serif; font-size: 1.7rem; margin: 0 0 8px; }
h3 { margin: 24px 0 8px; font-size: 1.1rem; }
.sim-eyebrow { color: var(--sim-ink-soft); font-size: .9rem; margin: 0; }
.sim-lead { font-size: 1.12rem; color: var(--sim-ink-soft); max-width: 62ch; }
.sim-note { color: var(--sim-ink-soft); font-size: .95rem; }

.sim-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.sim-card { display: grid; gap: 2px; padding: 16px 18px; border: 1px solid var(--sim-line); border-radius: 14px; text-decoration: none; color: var(--sim-ink); background: var(--sim-paper); }
.sim-card:hover { border-color: var(--sim-blue); background: var(--sim-soft); }
.sim-card strong { font-size: 1.15rem; }
.sim-card span { color: var(--sim-ink-soft); font-size: .92rem; }
.sim-card em { font-style: normal; color: var(--sim-blue-deep); font-size: .92rem; }

.sim-block { border-top: 1px solid var(--sim-line); padding-top: 24px; margin-top: 28px; }
.sim-primary, .sim-secondary { min-height: 44px; padding: 8px 18px; border-radius: 999px; cursor: pointer; }
.sim-primary { background: var(--sim-blue-deep); color: #fff; border: 1px solid var(--sim-blue-deep); }
.sim-secondary { background: var(--sim-paper); color: var(--sim-blue-deep); border: 1px solid var(--sim-blue); }

.sim-timer { position: sticky; top: 0; z-index: 2; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 12px 0; background: var(--sim-paper); }
.sim-clock { font-variant-numeric: tabular-nums; font-size: 1.6rem; font-weight: 700; min-width: 6.5ch; }
.sim-clock.is-over { color: var(--sim-red); }

.sim-pdf iframe { display: block; width: 100%; height: min(80vh, 1100px); border: 1px solid var(--sim-line); border-radius: 10px; background: var(--sim-soft); }
.sim-pdf-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font-size: .92rem; }
.sim-source { color: var(--sim-ink-soft); }

.sim-topics { padding-left: 20px; }
.sim-topics li { margin-bottom: 8px; }
.sim-topics span { display: block; color: var(--sim-ink-soft); font-size: .9rem; }

.sim-controls { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.sim-dictation label { display: block; font-weight: 600; margin-top: 8px; }
.sim-dictation textarea { width: 100%; margin: 6px 0 12px; padding: 12px; border: 1px solid var(--sim-line); border-radius: 10px; font-size: 1.05rem; line-height: 1.7; }
.sim-result { margin-top: 16px; padding: 16px; border-radius: 12px; background: var(--sim-soft); }
.sim-result p { margin: 0 0 10px; }
.sim-diff { line-height: 2; }
.sim-diff del { background: var(--sim-red-pale); color: var(--sim-red); text-decoration: line-through; padding: 0 2px; border-radius: 3px; }
.sim-diff ins { background: var(--sim-green-pale); color: var(--sim-green); text-decoration: none; font-weight: 600; padding: 0 2px; border-radius: 3px; }
.sim-official { margin-top: 16px; }
.sim-official summary { cursor: pointer; color: var(--sim-blue-deep); font-weight: 600; }

.sim-pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 40px; border-top: 1px solid var(--sim-line); padding-top: 16px; }
.sim-footer { border-top: 1px solid var(--sim-line); color: var(--sim-ink-soft); font-size: .9rem; padding: 16px 0 32px; }

@media (max-width: 560px) {
  .sim-pdf iframe { height: 70vh; }
  .sim-clock { font-size: 1.3rem; }
}

.sim-erratas{margin:1rem 0;padding:.9rem 1rem;border-left:4px solid #b3263e;background:#fff4f2;border-radius:6px}
.sim-erratas h4{margin:0 0 .4rem;font-size:1rem;color:#b3263e}
.sim-erratas ul{margin:0;padding-left:1.1rem}
.sim-erratas li{margin:.3rem 0;line-height:1.5}

/* Idioma Nacional interactivo (12/10/2026) */
.sim-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sim-reading { margin: 16px 0; padding: 16px 20px; border: 1px solid var(--sim-line); border-radius: 12px; background: var(--sim-soft); font-family: "EB Garamond", Georgia, serif; font-size: 1.12rem; line-height: 1.7; }
.sim-reading h3 { margin-top: 0; }
.sim-items { padding-left: 0; list-style: none; display: grid; gap: 18px; }
.sim-item { padding-bottom: 14px; border-bottom: 1px solid var(--sim-line); }
.sim-q { margin: 0 0 8px; }
.sim-pts { color: var(--sim-ink-soft); font-size: .9rem; white-space: nowrap; }
.sim-options { border: 0; padding: 0; margin: 0; display: grid; gap: 6px; }
.sim-options label, .sim-crit { display: flex; gap: 8px; align-items: flex-start; }
.sim-input { width: 100%; padding: 10px 12px; border: 1px solid var(--sim-line); border-radius: 10px; font: inherit; }
.sim-hint { margin-top: 6px; font-size: .95rem; }
.sim-hint summary { cursor: pointer; color: var(--sim-blue-deep); }
.sim-feedback { margin-top: 10px; padding: 12px 14px; border-radius: 10px; background: var(--sim-soft); }
.sim-feedback p { margin: 0 0 8px; }
.is-ok { color: var(--sim-green); font-weight: 600; }
.is-bad { color: var(--sim-red); font-weight: 600; }
.sim-quote { margin: 6px 0 10px; padding: 8px 14px; border-left: 4px solid var(--sim-blue); background: var(--sim-soft); }

/* Clase de Matemática: el examen problema por problema (17/10/2026) */
.sim-prob-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.sim-prob-nav a { padding: 6px 14px; border: 1px solid var(--sim-line); border-radius: 999px; text-decoration: none; font-size: .95rem; }
.sim-prob { margin-top: 28px; scroll-margin-top: 16px; }
.sim-prob h3 { font-family: "EB Garamond", Georgia, serif; font-size: 1.45rem; margin-bottom: 6px; }
.sim-enunciado { padding: 12px 16px; border-left: 4px solid var(--sim-blue); background: var(--sim-soft); border-radius: 0 10px 10px 0; }
.sim-enunciado p { margin: 0 0 8px; }
.sim-parte { margin-top: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--sim-line); }
.sim-parte h4 { margin: 0 0 6px; font-size: 1.05rem; }
.sim-parte > p { margin: 0 0 6px; }
.sim-sol { margin-top: 10px; }
.sim-sol > summary { cursor: pointer; color: var(--sim-blue-deep); font-weight: 600; }
.sim-steps { padding-left: 22px; }
.sim-steps li { margin-bottom: 10px; }
.sim-steps p { margin: 0 0 4px; }
.sim-calc { display: grid; gap: 4px; margin: 4px 0; padding: 10px 14px; background: var(--sim-soft); border-radius: 10px; font-variant-numeric: tabular-nums; overflow-x: auto; }
.sim-answer { padding: 10px 14px; background: var(--sim-green-pale); border-radius: 10px; }
.sim-error { padding: 10px 14px; background: var(--sim-red-pale); border-radius: 10px; }
.sim-frac { display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; font-size: .82em; line-height: 1.1; margin: 0 2px; }
.sim-frac > span + span { border-top: 1px solid currentColor; }
.sim-fig { margin: 12px 0; }
.sim-fig svg { display: block; width: 100%; max-width: 300px; height: auto; font-family: "Instrument Sans", system-ui, sans-serif; fill: var(--sim-ink); }
.sim-fig figcaption { color: var(--sim-ink-soft); font-size: .9rem; }