:root {
  --lib-navy: #062753;
  --lib-deep: #041b3c;
  --lib-blue: #087ff0;
  --lib-blue-2: #0d69c8;
  --lib-cyan: #28c5f5;
  --lib-ink: #0a2242;
  --lib-muted: #61738a;
  --lib-line: #d8e5f2;
  --lib-bg: #f2f7fc;
  --lib-soft: #edf6ff;
  --lib-green: #0aa777;
  --lib-gold: #f4b63d;
  --lib-shadow: 0 12px 32px rgba(20, 63, 106, .09);
  --proudg-library-sticky-top: 236px;
}

.proudg-library-shell { width: min(1180px, calc(100% - 36px)); margin-inline: auto; }
.proudg-library-topic, .proudg-library-archive, .proudg-library-course { color: var(--lib-ink); background: var(--lib-bg); font-family: Inter, "Open Sans", sans-serif; }
.proudg-library-topic *, .proudg-library-archive *, .proudg-library-course * { box-sizing: border-box; }
.proudg-library-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 22px; color: #8bb4d8; font-size: 12px; }
.proudg-library-breadcrumb a { color: #d9efff; }
.proudg-library-breadcrumb a:hover { color: #fff; }
.proudg-library-kickers { display: flex; flex-wrap: wrap; gap: 7px; }
.proudg-library-kickers span { padding: 5px 9px; color: #0870cd; border: 1px solid #b7d9f5; border-radius: 999px; background: #edf8ff; font-size: 10px; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.proudg-library-notice { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 18px; padding: 15px 18px; color: #185744; border: 1px solid #a7dccb; border-radius: 13px; background: #effbf7; font-size: 13px; line-height: 1.5; }
.proudg-library-notice i { margin-top: 2px; color: var(--lib-green); font-size: 18px; }
.proudg-library-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin: 34px 0 18px; }
.proudg-library-section-heading span, .proudg-library-review header > span, .proudg-library-flashcards header > span, .proudg-library-review-block header > span { color: var(--lib-blue-2); font-size: 10px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.proudg-library-section-heading h2 { margin: 3px 0 0; font-size: 30px; }
.proudg-library-section-heading p { max-width: 490px; margin: 0; color: var(--lib-muted); text-align: right; font-size: 13px; }

/* Archivo: Biblioteca como colección de materias */
.proudg-library-archive__hero, .proudg-library-course__hero { color: #fff; background: radial-gradient(circle at 82% 16%, rgba(35,196,255,.22), transparent 27%), linear-gradient(118deg, #03162f, #052b5b 67%, #064372); }
.proudg-library-archive__hero { padding: 38px 0 0; }
.proudg-library-archive__hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 260px; align-items: end; gap: 42px; }
.proudg-library-archive__hero > .proudg-library-shell > div:first-child > span { display: inline-block; padding: 6px 11px; color: #71dcff; border: 1px solid rgba(91,211,255,.45); border-radius: 999px; background: rgba(8,111,194,.18); font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.proudg-library-archive__hero h1 { margin: 12px 0 8px; color: #fff; font-size: clamp(38px, 5vw, 60px); letter-spacing: -.045em; line-height: 1.02; }
.proudg-library-archive__hero p { max-width: 760px; margin: 0 0 24px; color: #d8eafa; font-size: 16px; line-height: 1.55; }
.proudg-library-archive__stats { display: flex; width: max-content; margin-bottom: 35px; border: 1px solid rgba(110,202,255,.3); border-radius: 12px; background: rgba(2,28,62,.5); overflow: hidden; }
.proudg-library-archive__stats strong { display: flex; align-items: baseline; gap: 7px; min-width: 145px; padding: 12px 18px; color: #fff; border-right: 1px solid rgba(110,202,255,.22); font-size: 22px; }
.proudg-library-archive__stats strong:last-child { border-right: 0; }
.proudg-library-archive__stats small { color: #a9cbe6; font-size: 10px; font-weight: 650; text-transform: uppercase; }
.proudg-library-archive__owl { position: relative; display: flex; align-items: center; flex-direction: column; }
.proudg-library-archive__owl img { width: 205px; height: auto; filter: drop-shadow(0 15px 22px rgba(0,0,0,.27)); }
.proudg-library-archive__owl p { position: relative; z-index: 2; width: 240px; margin: -15px 0 22px; padding: 12px 15px; border: 1px solid rgba(81,210,255,.45); border-radius: 12px; background: rgba(2,25,56,.91); text-align: center; }
.proudg-library-archive__owl strong, .proudg-library-archive__owl span { display: block; }
.proudg-library-archive__owl strong { color: #5bd8ff; font-size: 11px; text-transform: uppercase; }
.proudg-library-archive__owl span { color: #c6dfef; font-size: 11px; }
.proudg-library-archive__body { padding: 24px 0 60px; }
.proudg-library-catalog-tools { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px; border: 1px solid var(--lib-line); border-radius: 14px; background: #fff; box-shadow: var(--lib-shadow); }
.proudg-library-catalog-tools label { display: flex; width: min(100%, 600px); align-items: center; gap: 9px; padding: 0 14px; color: #55708a; border: 1px solid #bdd1e5; border-radius: 9px; background: #fbfdff; }
.proudg-library-catalog-tools input { width: 100%; padding: 12px 0; border: 0; background: transparent; outline: 0; }
.proudg-library-catalog-tools > div { display: flex; gap: 7px; }
.proudg-library-catalog-tools > div span { padding: 6px 10px; color: #536b84; border-radius: 999px; background: #f0f5fa; font-size: 10px; font-weight: 750; }
.proudg-library-catalog-tools > div span.is-active { color: #fff; background: var(--lib-blue); }
.proudg-library-shelves { display: grid; gap: 22px; }
.proudg-library-shelf { border: 1px solid var(--lib-line); border-radius: 18px; background: #fff; box-shadow: var(--lib-shadow); overflow: hidden; }
.proudg-library-shelf[hidden], .proudg-library-unit-card[hidden] { display: none; }
.proudg-library-shelf__header { display: grid; grid-template-columns: 74px minmax(0,1fr) 135px; gap: 18px; align-items: center; padding: 22px; background: linear-gradient(100deg, #fff, #f4faff); border-bottom: 1px solid var(--lib-line); }
.proudg-library-bookmark { display: grid; width: 65px; height: 75px; place-items: center; align-content: center; gap: 5px; color: #fff; border-radius: 11px 11px 19px 19px; background: linear-gradient(155deg, var(--lib-blue), #0753a3); box-shadow: 0 10px 20px rgba(8,127,240,.24); }
.proudg-library-bookmark i { font-size: 22px; }
.proudg-library-bookmark span { font-size: 10px; font-weight: 850; }
.proudg-library-shelf__intro > div { display: flex; flex-wrap: wrap; gap: 8px; }
.proudg-library-shelf__intro > div span { color: #0a71c9; font-size: 10px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.proudg-library-shelf__intro > div strong { padding: 2px 7px; color: #14704f; border-radius: 999px; background: #e6f8f0; font-size: 9px; }
.proudg-library-shelf__intro h2 { margin: 5px 0 5px; font-size: 24px; }
.proudg-library-shelf__intro h2 a { color: var(--lib-ink); }
.proudg-library-shelf__intro p { margin: 0; color: var(--lib-muted); font-size: 12px; line-height: 1.5; }
.proudg-library-shelf__action { display: flex; align-items: center; flex-direction: column; padding-left: 18px; border-left: 1px solid var(--lib-line); }
.proudg-library-shelf__action strong { color: var(--lib-blue-2); font-size: 31px; line-height: 1; }
.proudg-library-shelf__action span { color: var(--lib-muted); font-size: 10px; }
.proudg-library-shelf__action a { margin-top: 9px; color: var(--lib-blue-2); font-size: 11px; font-weight: 850; }
.proudg-library-unit-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; padding: 16px; }
.proudg-library-unit-card { display: grid; grid-template-columns: 44px minmax(0,1fr) 28px; gap: 12px; align-items: center; min-height: 105px; padding: 14px; border: 1px solid #e0eaf4; border-radius: 12px; background: #fbfdff; transition: .2s ease; }
.proudg-library-unit-card:hover { border-color: #8cc8f5; background: #f2f9ff; transform: translateY(-2px); }
.proudg-library-unit-card__number { display: grid; width: 42px; height: 42px; place-items: center; color: #fff; border-radius: 11px; background: var(--lib-navy); font-size: 14px; font-weight: 850; }
.proudg-library-unit-card span { color: #0a76cf; font-size: 9px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.proudg-library-unit-card h3 { margin: 3px 0 4px; font-size: 14px; line-height: 1.25; }
.proudg-library-unit-card h3 a { color: var(--lib-ink); }
.proudg-library-unit-card p { margin: 0; color: var(--lib-muted); font-size: 10px; }
.proudg-library-unit-card__open { display: grid; width: 28px; height: 28px; place-items: center; color: #0879de; border-radius: 50%; background: #e5f3ff; }
.proudg-library-empty, .proudg-library-filter-empty { padding: 34px; border: 1px dashed #b8cfe3; border-radius: 14px; background: #fff; text-align: center; }

/* Archivo compacto: la portada solo muestra materias, no sus unidades. */
.proudg-library-archive--compact .proudg-library-archive__hero { padding: 18px 0 0; }
.proudg-library-archive--compact .proudg-library-archive__hero-grid { grid-template-columns: minmax(0,1fr) 125px; min-height: 205px; gap: 24px; }
.proudg-library-archive--compact .proudg-library-archive__hero h1 { margin: 8px 0 4px; font-size: clamp(30px,4vw,43px); }
.proudg-library-archive--compact .proudg-library-archive__hero p { margin: 0 0 10px; font-size: 13px; }
.proudg-library-archive__compact-owl { width: 118px; height: auto; align-self: end; filter: drop-shadow(0 11px 16px rgba(0,0,0,.25)); }
.proudg-library-archive--compact .proudg-library-archive__body { padding-top: 16px; }
.proudg-library-catalog-tools--simple { padding: 10px; }
.proudg-library-catalog-tools--simple label { width: min(100%,560px); }
.proudg-library-catalog-tools--simple > span { padding-right: 8px; color: var(--lib-muted); font-size: 10px; font-weight: 750; }
.proudg-library-archive__hero .proudg-library-catalog-tools--simple { max-width: 760px; margin: 0 0 17px; padding: 7px; border-color: rgba(133,207,255,.45); background: rgba(255,255,255,.98); box-shadow: 0 10px 22px rgba(0,0,0,.14); }
.proudg-library-archive__hero .proudg-library-catalog-tools--simple label { border: 0; background: transparent; }
.proudg-library-archive__hero .proudg-library-catalog-tools--simple input { padding: 9px 0; }
.proudg-library-archive__hero .proudg-library-catalog-tools--simple > span { color: #315372; white-space: nowrap; }
.proudg-library-archive__heading { margin: 20px 0 11px; }
.proudg-library-archive__heading h2 { font-size: 23px; }
.proudg-library-subject-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.proudg-library-subject-card { min-width: 0; border: 1px solid var(--lib-line); border-radius: 13px; background: #fff; box-shadow: 0 8px 20px rgba(20,63,106,.07); transition: transform .2s,border-color .2s,box-shadow .2s; overflow: hidden; }
.proudg-library-subject-card:hover { border-color: #85c5f4; box-shadow: 0 12px 24px rgba(20,63,106,.12); transform: translateY(-2px); }
.proudg-library-subject-card > a { display: grid; grid-template-columns: 66px minmax(0,1fr) 28px; gap: 14px; align-items: center; min-height: 105px; padding: 15px; }
.proudg-library-subject-card__code { display: flex; width: 62px; height: 67px; align-items: center; justify-content: center; flex-direction: column; gap: 4px; color: #fff; border-radius: 11px; background: linear-gradient(150deg,var(--lib-blue),#0754a4); box-shadow: 0 8px 16px rgba(8,127,240,.22); font-size: 10px; font-weight: 850; }
.proudg-library-subject-card__code i { font-size: 18px; }
.proudg-library-subject-card h2 { margin: 0; color: var(--lib-ink); font-size: 17px; line-height: 1.25; }
.proudg-library-subject-card > a > i { display: grid; width: 27px; height: 27px; place-items: center; color: #0877d7; border-radius: 50%; background: #e7f4ff; }

/* Portada individual de materia */
.proudg-library-course__hero { padding: 16px 0 20px; }
.proudg-library-course__hero .proudg-library-breadcrumb { margin-bottom: 11px; }
.proudg-library-course__hero-grid { display: grid; grid-template-columns: minmax(0,1fr) 230px; gap: 28px; align-items: center; }
.proudg-library-course__hero h1 { margin: 6px 0 0; max-width: 850px; color: #fff; font-size: clamp(29px, 4vw, 43px); letter-spacing: -.035em; line-height: 1.05; }
.proudg-library-course__hero-grid > div > p:last-of-type { max-width: 790px; margin: 0; color: #d4e8f8; font-size: 16px; line-height: 1.55; }
.proudg-library-eyebrow { margin: 18px 0 0 !important; color: #62d9ff !important; font-size: 12px !important; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.proudg-library-course__metrics { display: flex; margin-top: 12px; }
.proudg-library-course__metrics strong { display: flex; flex-direction: column; min-width: 105px; padding-right: 16px; margin-right: 16px; color: #fff; border-right: 1px solid rgba(131,199,241,.28); font-size: 19px; }
.proudg-library-course__metrics strong:last-child { border-right: 0; }
.proudg-library-course__metrics small { color: #9dc3df; font-size: 9px; text-transform: uppercase; }
.proudg-library-course__quick { display: flex; align-items: flex-start; flex-direction: column; padding: 15px 17px; border: 1px solid rgba(100,210,255,.38); border-radius: 12px; background: rgba(2,25,56,.62); }
.proudg-library-course__quick span { color: #65d9ff; font-size: 9px; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.proudg-library-course__quick strong { margin: 3px 0 10px; color: #fff; font-size: 14px; }
.proudg-library-course__quick a { padding: 8px 10px; color: #dff3ff; border: 1px solid rgba(129,210,255,.35); border-radius: 7px; font-size: 10px; font-weight: 750; }
.proudg-library-course__quick a:hover { color: #fff; background: rgba(8,127,240,.3); }
.proudg-library-course__body { padding: 10px 0 58px; }
.proudg-library-course__heading { margin: 8px 0 10px; }
.proudg-library-course__objective { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 22px 24px; border: 1px solid var(--lib-line); border-radius: 15px; background: #fff; box-shadow: var(--lib-shadow); }
.proudg-library-course__objective span { color: #0872cc; font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.proudg-library-course__objective h2 { margin: 4px 0; font-size: 24px; }
.proudg-library-course__objective p { margin: 0; color: var(--lib-muted); font-size: 13px; }
.proudg-library-course__objective > a { flex: 0 0 auto; padding: 12px 15px; color: #fff; border-radius: 9px; background: var(--lib-blue); font-size: 11px; font-weight: 850; }
.proudg-library-course-units { display: grid; gap: 12px; }
.proudg-library-course-unit { display: grid; grid-template-columns: 58px minmax(0,1fr) 72px; gap: 13px; align-items: center; min-height: 78px; padding: 10px 14px; border: 1px solid var(--lib-line); border-radius: 12px; background: #fff; box-shadow: 0 5px 15px rgba(20,63,106,.05); }
.proudg-library-course-unit__index { display: flex; align-items: center; flex-direction: column; justify-content: center; min-height: 56px; color: #fff; border-radius: 10px; background: linear-gradient(150deg, var(--lib-navy), #0a65bd); }
.proudg-library-course-unit__index span { font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.proudg-library-course-unit__index strong { font-size: 20px; }
.proudg-library-course-unit > div:nth-child(2) > span { color: #0874cf; font-size: 9px; font-weight: 850; text-transform: uppercase; }
.proudg-library-course-unit h3 { margin: 2px 0 0; font-size: 16px; line-height: 1.25; }
.proudg-library-course-unit h3 a { color: var(--lib-ink); }
.proudg-library-course-unit p { margin: 0; color: var(--lib-muted); font-size: 12px; }
.proudg-library-course-unit ul { display: flex; gap: 7px; margin: 12px 0 0; padding: 0; list-style: none; }
.proudg-library-course-unit li { padding: 4px 8px; color: #44617e; border-radius: 6px; background: #f0f6fc; font-size: 9px; }
.proudg-library-course-unit__open { color: var(--lib-blue-2); font-size: 10px; font-weight: 850; text-align: right; }
/* Unidad: encabezado y pestañas */
.proudg-library-unit-hero { padding: 14px 0 16px; color: #fff; background: linear-gradient(118deg, #03162f, #052b5b 67%, #064372); }
.proudg-library-unit-hero .proudg-library-breadcrumb { margin-bottom: 9px; }
.proudg-library-unit-hero__card { display: grid; grid-template-columns: 68px minmax(0,1fr) 300px; gap: 16px; align-items: center; padding: 14px 17px; color: var(--lib-ink); border: 1px solid rgba(145,205,246,.4); border-radius: 14px; background: linear-gradient(105deg, #fff 0%, #f6fbff 75%, #e8f8ff 100%); box-shadow: 0 12px 26px rgba(0,0,0,.14); }
.proudg-library-unit-seal { display: flex; width: 64px; height: 68px; align-items: center; flex-direction: column; justify-content: center; color: #fff; border-radius: 12px; background: linear-gradient(150deg, var(--lib-navy), #0b6bc5); }
.proudg-library-unit-seal span { font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.proudg-library-unit-seal strong { font-size: 24px; }
.proudg-library-unit-hero__copy > p { margin: 7px 0 1px; color: #0872ce; font-size: 10px; font-weight: 850; }
.proudg-library-unit-hero__copy h1 { margin: 0 0 3px; color: var(--lib-ink); font-size: clamp(24px, 3.2vw, 34px); letter-spacing: -.025em; line-height: 1.08; }
.proudg-library-unit-hero__copy > span { color: var(--lib-muted); font-size: 12px; line-height: 1.45; }
.proudg-library-meta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 7px; color: #4e6881; font-size: 9px; }
.proudg-library-meta i { margin-right: 4px; color: #0877d7; }
.proudg-library-hero-modes { align-self: stretch; display: flex; min-width: 0; justify-content: center; flex-direction: column; padding-left: 16px; border-left: 1px solid #cfe0ee; }
.proudg-library-hero-modes header { display: flex; align-items: center; gap: 6px; margin: 0 0 7px; color: #244966; font-size: 10px; }
.proudg-library-hero-modes header i { color: var(--lib-blue); }
.proudg-library-hero-modes__options { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 5px; }
.proudg-library-hero-modes button { display: flex; min-width: 0; align-items: center; justify-content: center; flex-direction: column; gap: 4px; padding: 7px 4px; color: #49647d; border: 1px solid #ceddea; border-radius: 9px; background: rgba(255,255,255,.7); text-align: center; cursor: pointer; transition: border-color .18s, background .18s, color .18s; }
.proudg-library-hero-modes button:hover { color: #075da9; border-color: #8ec7ee; background: #fff; }
.proudg-library-hero-modes button:focus-visible, .proudg-library-side-toc summary:focus-visible, .proudg-library-side-toc a:focus-visible, .proudg-library-review-topics a:focus-visible { outline: 3px solid rgba(8,127,240,.28); outline-offset: 2px; }
.proudg-library-hero-modes button[aria-selected="true"] { color: #fff; border-color: var(--lib-blue); background: linear-gradient(145deg,#087ff0,#0866bf); box-shadow: 0 6px 13px rgba(8,108,198,.18); }
.proudg-library-hero-modes button > i:first-child { color: #0780df; font-size: 13px; }
.proudg-library-hero-modes button[aria-selected="true"] > i:first-child { color: #fff; }
.proudg-library-hero-modes button > i:last-child, .proudg-library-hero-modes button small { display: none; }
.proudg-library-hero-modes button span, .proudg-library-hero-modes button strong { display: block; }
.proudg-library-hero-modes button strong { font-size: 9px; line-height: 1.15; }
.proudg-library-unit-progress { padding: 14px; border: 1px solid #bfd9ee; border-radius: 12px; background: #fff; }
.proudg-library-unit-progress > span, .proudg-library-unit-progress > strong, .proudg-library-unit-progress > small { display: block; }
.proudg-library-unit-progress > span { color: #54708b; font-size: 9px; text-transform: uppercase; }
.proudg-library-unit-progress > strong { margin: 2px 0 8px; color: var(--lib-blue); font-size: 23px; }
.proudg-library-unit-progress > div { height: 7px; border-radius: 999px; background: #e2edf6; overflow: hidden; }
.proudg-library-unit-progress > div i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--lib-blue), var(--lib-cyan)); transition: width .18s linear; }
.proudg-library-unit-progress > small { margin-top: 8px; color: #74879b; font-size: 9px; }
.proudg-library-workspace { padding: 14px 0 58px; }
.proudg-library-content-panels, .proudg-library-panel { min-width: 0; }
.proudg-library-panel-layout, .proudg-library-quiz-layout { display: grid; grid-template-areas: "primary sidebar"; grid-template-columns: minmax(0,1fr) 300px; gap: 22px; align-items: start; }
.proudg-library-panel__primary, .proudg-library-quiz-main { grid-area: primary; min-width: 0; padding: 25px; border: 1px solid var(--lib-line); border-radius: 16px; background: #fff; box-shadow: var(--lib-shadow); }
.proudg-library-panel-sidebar { grid-area: sidebar; min-width: 0; align-self: stretch; }
.proudg-library-panel-sidebar__sticky { position: sticky; z-index: 20; top: var(--proudg-library-sticky-top, 236px); display: flex; max-height: calc(100vh - var(--proudg-library-sticky-top, 236px) - 12px); flex-direction: column; gap: 10px; padding-right: 3px; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: #9ec7e5 transparent; transition: top .15s ease, max-height .15s ease; }
.proudg-library-panel-sidebar__sticky::-webkit-scrollbar { width: 5px; }
.proudg-library-panel-sidebar__sticky::-webkit-scrollbar-thumb { border-radius: 999px; background: #9ec7e5; }
.proudg-library-panel[hidden] { display: none; }

/* Pestaña Estudia */
.proudg-library-article { min-width: 0; padding: 5px 8px 22px; font-family: Georgia, "Times New Roman", serif; font-size: 16px; line-height: 1.78; }
.proudg-library-article .proudg-topic-lead { color: #1e4265; font-size: 20px; line-height: 1.55; }
.proudg-library-article h2 { scroll-margin-top: calc(var(--proudg-library-sticky-top, 236px) + 14px); margin: 42px 0 13px; padding-bottom: 8px; color: var(--lib-ink); border-bottom: 1px solid #e2ebf4; font-family: Inter, sans-serif; font-size: 25px; line-height: 1.2; }
.proudg-library-article h3 { scroll-margin-top: calc(var(--proudg-library-sticky-top, 236px) + 14px); margin: 30px 0 8px; color: #0b4f8f; font-family: Inter, sans-serif; font-size: 18px; line-height: 1.3; }
.proudg-library-article > h3:first-child { margin-top: 3px; }
.proudg-library-article h4 { margin: 20px 0 7px; color: #173b63; font-family: Inter, sans-serif; font-size: 13px; font-weight: 850; letter-spacing: .01em; }
.proudg-library-article p { margin: 0 0 16px; text-align: justify; text-justify: inter-word; hyphens: auto; }
.proudg-topic-section { padding: 0 0 18px; border-bottom: 1px solid #edf2f7; }
.proudg-topic-section + .proudg-topic-section { padding-top: 3px; }
.proudg-topic-key { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 12px; align-items: start; margin: 14px 0 20px; padding: 14px 16px; color: #173f61; border: 1px solid #b9d8ed; border-left: 4px solid var(--lib-blue); border-radius: 9px; background: #f1f8fe; font-family: Inter, sans-serif; font-size: 11px; line-height: 1.55; }
.proudg-topic-key strong { color: #075da9; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.proudg-topic-visual { margin: 22px 0 24px; padding: 17px; border: 1px solid #c7deef; border-radius: 13px; background: linear-gradient(145deg,#fbfdff,#f1f8fe); box-shadow: 0 8px 20px rgba(26,76,119,.06); font-family: Inter, sans-serif; }
.proudg-topic-visual figcaption { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; color: #526b82; font-size: 9px; line-height: 1.35; }
.proudg-topic-visual figcaption > i { display: grid; flex: 0 0 34px; width: 34px; height: 34px; place-items: center; color: #fff; border-radius: 9px; background: linear-gradient(145deg,#075399,#0989eb); font-size: 14px; }
.proudg-topic-visual figcaption span, .proudg-topic-visual figcaption strong { display: block; }
.proudg-topic-visual figcaption strong { margin-bottom: 1px; color: #123b63; font-size: 12px; }
.proudg-topic-visual__flow { display: grid; grid-template-columns: minmax(0,1fr) 22px minmax(0,1fr) 22px minmax(0,1fr); align-items: center; }
.proudg-topic-visual__flow > i { color: #1685dd; text-align: center; }
.proudg-topic-visual__flow > div { min-height: 116px; padding: 13px; border: 1px solid #cae0ef; border-radius: 10px; background: #fff; }
.proudg-topic-visual__flow > div > span { display: grid; width: 24px; height: 24px; margin-bottom: 7px; place-items: center; color: #fff; border-radius: 50%; background: #0879d7; font-size: 9px; font-weight: 900; }
.proudg-topic-visual__flow strong { display: block; color: #103a62; font-size: 11px; }
.proudg-topic-visual__flow p { margin: 4px 0 0; color: #506b82; text-align: left; font-size: 9px; line-height: 1.45; }
.proudg-topic-visual__compare { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.proudg-topic-visual__compare section { padding: 14px; border: 1px solid #b9dfd2; border-radius: 10px; background: #f2faf7; }
.proudg-topic-visual__compare section + section { border-color: #e4c8d0; background: #fff6f8; }
.proudg-topic-visual__compare span { color: #147153; font-size: 10px; font-weight: 900; text-transform: uppercase; }
.proudg-topic-visual__compare section + section span { color: #812944; }
.proudg-topic-visual__compare span i { margin-right: 5px; }
.proudg-topic-visual__compare p { margin: 8px 0 0; color: #38576e; text-align: left; font-size: 10px; line-height: 1.5; }
.proudg-topic-visual--framework dl { display: grid; gap: 7px; margin: 0; }
.proudg-topic-visual--framework dl > div { display: grid; grid-template-columns: 190px minmax(0,1fr); gap: 12px; align-items: start; padding: 11px 12px; border-radius: 9px; background: #fff; }
.proudg-topic-visual--framework dt { color: #0a5fa9; font-size: 10px; font-weight: 850; }
.proudg-topic-visual--framework dt i { width: 17px; color: #0984df; }
.proudg-topic-visual--framework dd { margin: 0; color: #49677f; font-size: 10px; line-height: 1.48; }
.proudg-library-objective { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; padding: 18px; color: #164c38; border: 1px solid #a9dfcc; border-radius: 13px; background: #f0fbf7; font-family: Inter, sans-serif; }
.proudg-library-objective > i { display: grid; flex: 0 0 38px; width: 38px; height: 38px; place-items: center; color: #fff; border-radius: 50%; background: var(--lib-green); }
.proudg-library-objective span { color: #187255; font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.proudg-library-objective p { margin: 3px 0 0; font-size: 12px; line-height: 1.5; }
.proudg-library-short { margin-bottom: 22px; padding: 17px 19px; border-left: 5px solid var(--lib-blue); border-radius: 10px; background: #edf7ff; font-family: Inter, sans-serif; }
.proudg-library-short span { color: #0b69be; font-size: 10px; font-weight: 850; text-transform: uppercase; }
.proudg-library-short p { margin: 5px 0 0; color: #244966; font-size: 13px; line-height: 1.55; }
.proudg-library-inline-case { padding: 19px; border: 1px solid #b8d7ed; border-radius: 12px; background: #f4faff; font-family: Inter, sans-serif; font-size: 13px; }
.proudg-library-inline-case strong { color: #0870c6; }
.proudg-topic-keywords { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 20px; font-family: Inter, sans-serif; }
.proudg-topic-keywords span { padding: 6px 10px; color: #0a65b4; border: 1px solid #b9d9ee; border-radius: 999px; background: #edf7ff; font-size: 10px; font-weight: 750; }
.proudg-topic-remember { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; margin: 0 0 22px; padding: 0; list-style: none; font-family: Inter, sans-serif; }
.proudg-topic-remember li { position: relative; padding: 11px 12px 11px 34px; color: #214a67; border: 1px solid #c5dfef; border-radius: 9px; background: #f4faff; font-size: 11px; line-height: 1.4; }
.proudg-topic-remember li::before { position: absolute; top: 11px; left: 11px; content: "✓"; color: var(--lib-green); font-weight: 900; }
.proudg-topic-disclaimer { padding: 16px; color: #6b5419; border-radius: 10px; background: #fff6dc; font-family: Inter, sans-serif; font-size: 12px; }
.proudg-topic-references { padding-left: 22px; font-family: Inter, sans-serif; font-size: 12px; line-height: 1.55; }
.proudg-library-article h2#fuentes { color: #681c3a; border-bottom-color: #d7a9bb; font-weight: 900; }
.proudg-topic-references li { margin-bottom: 10px; color: #173b63; font-weight: 700; }
.proudg-topic-references li::marker { color: #681c3a; font-weight: 900; }

/* Navegación persistente de la unidad */
.proudg-library-side-card { padding: 15px; border: 1px solid var(--lib-line); border-radius: 12px; background: #f9fcff; }
.proudg-library-side-card header { display: flex; align-items: center; gap: 8px; margin-bottom: 11px; color: var(--lib-ink); }
.proudg-library-side-card header i { color: var(--lib-blue); }
.proudg-library-side-card header strong { font-size: 12px; }
.proudg-library-side-card header > span { margin-left: auto; color: var(--lib-blue); font-size: 11px; font-weight: 850; }
.proudg-library-side-progress { flex: 0 0 auto; padding: 17px; color: #fff; border: 1px solid #1684d4; border-radius: 14px; background: linear-gradient(135deg, #041f48, #096fb8); box-shadow: 0 12px 26px rgba(4,43,87,.18); }
.proudg-library-side-progress__heading { display: flex; align-items: end; justify-content: space-between; gap: 12px; }
.proudg-library-side-progress__heading > span { color: #c9eaff; font-size: 10px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.proudg-library-side-progress__heading > strong { color: #fff; font-size: 30px; line-height: 1; }
.proudg-library-side-progress__bar { height: 9px; margin-top: 12px; border-radius: 999px; background: rgba(255,255,255,.2); overflow: hidden; }
.proudg-library-side-progress__bar i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #39d7ff, #fff); transition: width .18s linear; }
.proudg-library-side-progress p { margin: 10px 0 0; color: #cce7f8; font-size: 9px; line-height: 1.4; }
.proudg-library-side-progress p strong { display: block; margin-top: 2px; color: #fff; font-size: 10px; }
.proudg-library-side-toc { display: block; min-height: 0; flex: 0 1 auto; padding: 0; overflow: hidden; }
.proudg-library-side-toc[open] { display: flex; flex-direction: column; }
.proudg-library-side-toc summary { display: grid; grid-template-columns: minmax(0,1fr) auto 12px; gap: 8px; align-items: center; padding: 13px 14px; color: var(--lib-ink); border-bottom: 1px solid transparent; cursor: pointer; list-style: none; }
.proudg-library-side-toc[open] summary { border-bottom-color: var(--lib-line); }
.proudg-library-side-toc summary::-webkit-details-marker { display: none; }
.proudg-library-side-toc summary > span { display: flex; align-items: center; gap: 8px; }
.proudg-library-side-toc summary i { color: var(--lib-blue); }
.proudg-library-side-toc summary > i { color: #8195a8; transition: transform .2s; }
.proudg-library-side-toc[open] summary > i { transform: rotate(180deg); }
.proudg-library-side-toc summary strong { font-size: 12px; }
.proudg-library-side-toc summary small { color: #71879c; font-size: 8px; }
.proudg-library-side-toc__body { display: flex; max-height: calc(100vh - var(--proudg-library-sticky-top, 236px) - 190px); min-height: 120px; flex-direction: column; padding: 8px 8px 10px 12px; }
.proudg-library-side-toc label { display: none; }
.proudg-library-side-toc select { display: none; width: 100%; padding: 9px; border: 1px solid #bdd1e4; border-radius: 8px; background: #fff; }
.proudg-library-side-toc ol { min-height: 120px; margin: 0; padding: 0 6px 0 19px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: #9ec7e5 transparent; }
.proudg-library-side-toc li { margin: 3px 0; color: #91a0ae; font-size: 10px; }
.proudg-library-side-toc a { display: block; padding: 5px 7px; color: #375873; border-left: 3px solid transparent; border-radius: 0 6px 6px 0; line-height: 1.35; }
.proudg-library-side-toc a:hover, .proudg-library-side-toc a.is-current { color: #075da9; border-left-color: var(--lib-blue); background: #eaf6ff; font-weight: 800; }
.proudg-library-review-topics > p { margin: -3px 0 10px; color: var(--lib-muted); font-size: 9px; line-height: 1.4; }
.proudg-library-review-topics ol { display: grid; gap: 6px; margin: 0; padding: 0; list-style: none; }
.proudg-library-review-topics li { margin: 0; }
.proudg-library-review-topics a { display: grid; grid-template-columns: 25px minmax(0,1fr) 10px; gap: 8px; align-items: center; padding: 9px; color: #254a69; border: 1px solid #d8e7f3; border-radius: 9px; background: #fff; font-size: 10px; font-weight: 750; line-height: 1.35; }
.proudg-library-review-topics a:hover { color: #075da9; border-color: #a9d5f1; background: #edf8ff; }
.proudg-library-review-topics a > i:first-child { display: grid; width: 25px; height: 25px; place-items: center; color: #0878d6; border-radius: 7px; background: #e6f4ff; }
.proudg-library-review-topics a > i:last-child { color: #91a8bb; }

/* Pestaña Repasa */
.proudg-library-review { min-width: 0; }
.proudg-library-review__head { text-align: center; }
.proudg-library-review__head h2 { margin: 4px 0; font-size: 29px; }
.proudg-library-review__head p { margin: 0; color: var(--lib-muted); font-size: 12px; }
.proudg-library-concept-map { position: relative; min-height: 360px; margin: 22px 0; padding: 22px; border: 1px solid #c6e0f2; border-radius: 17px; background: radial-gradient(circle at center, #e6f6ff, #f8fcff 58%, #eef7ff); overflow: hidden; }
.proudg-library-concept-map::before, .proudg-library-concept-map::after { position: absolute; top: 50%; left: 50%; width: 260px; height: 260px; content: ""; border: 1px dashed #9bd4f4; border-radius: 50%; transform: translate(-50%,-50%); }
.proudg-library-concept-map::after { width: 190px; height: 190px; }
.proudg-library-concept-map__center { position: absolute; z-index: 2; top: 50%; left: 50%; display: flex; width: 150px; height: 150px; align-items: center; justify-content: center; flex-direction: column; padding: 17px; color: #fff; border: 10px solid #d9f1ff; border-radius: 50%; background: linear-gradient(145deg, #063163, #0884e4); box-shadow: 0 14px 28px rgba(4,70,130,.25); text-align: center; transform: translate(-50%,-50%); }
.proudg-library-concept-map__center i { margin-bottom: 6px; color: #61dfff; font-size: 24px; }
.proudg-library-concept-map__center span { font-size: 11px; font-weight: 850; line-height: 1.25; }
.proudg-library-concept-map__items article { position: absolute; z-index: 3; display: flex; width: 190px; min-height: 61px; align-items: center; gap: 9px; padding: 10px; border: 1px solid #b9d9ee; border-radius: 11px; background: #fff; box-shadow: 0 7px 18px rgba(23,75,119,.08); }
.proudg-library-concept-map__items article strong { display: grid; flex: 0 0 27px; width: 27px; height: 27px; place-items: center; color: #fff; border-radius: 50%; background: var(--lib-blue); font-size: 10px; }
.proudg-library-concept-map__items article span { color: #234764; font-size: 10px; font-weight: 750; line-height: 1.25; }
.proudg-library-concept-map__items article:nth-child(1) { top: 23px; left: 24px; }
.proudg-library-concept-map__items article:nth-child(2) { top: 23px; right: 24px; }
.proudg-library-concept-map__items article:nth-child(3) { top: 50%; left: 12px; transform: translateY(-50%); }
.proudg-library-concept-map__items article:nth-child(4) { top: 50%; right: 12px; transform: translateY(-50%); }
.proudg-library-concept-map__items article:nth-child(5) { bottom: 23px; left: 24px; }
.proudg-library-concept-map__items article:nth-child(6) { right: 24px; bottom: 23px; }
.proudg-library-review-block { margin-top: 24px; padding: 20px; border: 1px solid var(--lib-line); border-radius: 14px; background: #fbfdff; }
.proudg-library-review-block h2, .proudg-library-flashcards h2 { margin: 3px 0 15px; font-size: 21px; }
.proudg-library-flow { display: flex; align-items: stretch; margin: 0; padding: 0; list-style: none; }
.proudg-library-flow li { position: relative; display: flex; min-height: 82px; align-items: center; justify-content: center; flex: 1; padding: 12px; color: #174566; border: 1px solid #bcd8ed; background: #f2faff; text-align: center; font-size: 10px; font-weight: 750; }
.proudg-library-flow li:not(:last-child)::after { position: absolute; z-index: 2; right: -11px; width: 22px; height: 22px; content: "→"; color: #fff; border-radius: 50%; background: var(--lib-blue); line-height: 22px; }
.proudg-library-accordions { display: grid; gap: 7px; }
.proudg-library-accordions details { border: 1px solid #d3e2ef; border-radius: 9px; background: #fff; }
.proudg-library-accordions summary { display: grid; grid-template-columns: 29px minmax(0,1fr) 15px; gap: 9px; align-items: center; padding: 11px; color: #173e61; cursor: pointer; font-size: 11px; font-weight: 750; list-style: none; }
.proudg-library-accordions summary::-webkit-details-marker { display: none; }
.proudg-library-accordions summary span { display: grid; width: 26px; height: 26px; place-items: center; color: #0874cc; border-radius: 7px; background: #e8f5ff; font-size: 9px; }
.proudg-library-accordions details p { margin: 0; padding: 0 13px 13px 49px; color: var(--lib-muted); font-size: 11px; }
.proudg-library-case { display: grid; grid-template-columns: 1fr 1.15fr; gap: 22px; margin-top: 24px; padding: 23px; color: #fff; border-radius: 15px; background: linear-gradient(120deg, #062552, #0874ba); }
.proudg-library-case > div > span { color: #6adfff; font-size: 9px; font-weight: 850; text-transform: uppercase; }
.proudg-library-case h2 { margin: 4px 0; color: #fff; font-size: 22px; }
.proudg-library-case p { margin: 0; color: #d9edfa; font-size: 11px; }
.proudg-library-case dl, .proudg-library-case dd { margin: 0; }
.proudg-library-case dl { display: grid; gap: 8px; }
.proudg-library-case dl div { padding: 10px; border-radius: 9px; background: rgba(255,255,255,.09); }
.proudg-library-case dt { color: #63dfff; font-size: 9px; text-transform: uppercase; }
.proudg-library-case dd { font-size: 10px; }
.proudg-library-flashcards { margin-top: 24px; }
.proudg-library-flashcards > div { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.proudg-library-flashcards article { min-height: 138px; padding: 17px; border: 1px solid var(--lib-line); border-radius: 12px; background: linear-gradient(145deg,#fff,#f1f8ff); box-shadow: 0 7px 17px rgba(20,63,106,.06); }
.proudg-library-flashcards article > span { color: #0875cd; font-size: 9px; font-weight: 850; text-transform: uppercase; }
.proudg-library-flashcards h3 { margin: 8px 0; font-size: 14px; }
.proudg-library-flashcards p { margin: 0; color: var(--lib-muted); font-size: 10px; }
.proudg-library-review-guides { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 24px; }
.proudg-library-review-guides > section { padding: 18px; border: 1px solid #b9dfd1; border-radius: 13px; background: #f1faf6; }
.proudg-library-review-guides > section.is-warning { border-color: #e4c8cd; background: #fff7f8; }
.proudg-library-review-guides header { display: flex; align-items: center; gap: 10px; }
.proudg-library-review-guides header > i { display: grid; flex: 0 0 34px; width: 34px; height: 34px; place-items: center; color: #fff; border-radius: 50%; background: var(--lib-green); }
.proudg-library-review-guides .is-warning header > i { background: #8a2e49; }
.proudg-library-review-guides header span { color: #197054; font-size: 9px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.proudg-library-review-guides .is-warning header span { color: #8a2e49; }
.proudg-library-review-guides h2 { margin: 2px 0; color: var(--lib-ink); font-size: 16px; }
.proudg-library-review-guides ul { margin: 14px 0 0; padding-left: 18px; }
.proudg-library-review-guides li { margin: 8px 0; color: #35566e; font-size: 10px; line-height: 1.5; }
.proudg-library-next { display: block; margin: 22px 0 0 auto; padding: 12px 17px; color: #fff; border: 0; border-radius: 9px; background: var(--lib-blue); font-size: 11px; font-weight: 850; cursor: pointer; }
.proudg-library-route { margin: 0; padding: 0; list-style: none; }
.proudg-library-route li { position: relative; padding: 7px 5px 7px 24px; color: #62768a; font-size: 10px; }
.proudg-library-route li::before { position: absolute; top: 7px; left: 0; display: grid; width: 16px; height: 16px; place-items: center; content: ""; border: 1px solid #afc7da; border-radius: 50%; }
.proudg-library-route li.is-done::before { content: "✓"; color: #fff; border-color: var(--lib-green); background: var(--lib-green); font-size: 9px; }
.proudg-library-route li.is-active { color: #0874cc; font-weight: 850; }
.proudg-library-route li.is-active::before { border: 5px solid #bee5ff; background: var(--lib-blue); }

/* Pestaña de autoevaluación */
.proudg-library-quiz { min-width: 0; min-height: 480px; }
.proudg-quiz-head { display: grid; grid-template-columns: 1fr auto; gap: 9px; align-items: center; margin-bottom: 18px; }
.proudg-quiz-head h2 { margin: 0; font-size: 26px; }
.proudg-quiz-head > strong { color: var(--lib-blue); font-size: 12px; }
.proudg-quiz-head p { grid-column: 1 / -1; margin: 0; color: var(--lib-muted); font-size: 11px; }
.proudg-quiz-progress { grid-column: 1 / -1; height: 8px; border-radius: 999px; background: #e4edf6; overflow: hidden; }
.proudg-quiz-progress span { display: block; height: 100%; background: linear-gradient(90deg,var(--lib-blue),var(--lib-cyan)); transition: width .3s; }
.proudg-quiz-card { padding: 26px; border: 1px solid var(--lib-line); border-radius: 15px; background: #fff; box-shadow: var(--lib-shadow); }
.proudg-quiz-card > span { color: #0a75cf; font-size: 10px; font-weight: 850; text-transform: uppercase; }
.proudg-quiz-card h3 { margin: 7px 0 19px; font-size: 21px; line-height: 1.35; }
.proudg-quiz-options { display: grid; gap: 9px; }
.proudg-quiz-option { display: flex; gap: 10px; align-items: center; padding: 12px 14px; color: #173a5c; border: 1px solid #c9d9e8; border-radius: 10px; background: #f9fcff; cursor: pointer; font-size: 12px; }
.proudg-quiz-option:hover { border-color: #6eb8ed; background: #f0f8ff; }
.proudg-quiz-option input { accent-color: var(--lib-blue); }
.proudg-quiz-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; }
.proudg-quiz-actions span { color: var(--lib-muted); font-size: 10px; }
.proudg-quiz-actions > div { display: flex; gap: 8px; }
.proudg-quiz-actions button, .proudg-quiz-result button { padding: 11px 16px; color: #fff; border: 0; border-radius: 8px; background: var(--lib-blue); font-size: 11px; font-weight: 850; cursor: pointer; }
.proudg-quiz-actions button.is-secondary { color: #526a80; border: 1px solid #c7d8e7; background: #fff; }
.proudg-quiz-feedback { margin-top: 14px; padding: 13px; color: #165b43; border-radius: 9px; background: #edf8f3; font-size: 11px; }
.proudg-quiz-feedback.is-wrong { color: #7a3038; background: #fff0f1; }
.proudg-quiz-feedback a { display: inline-block; margin-top: 6px; font-weight: 850; }
.proudg-quiz-result { padding: 42px 25px; border: 1px solid var(--lib-line); border-radius: 16px; background: #f3f9ff; text-align: center; }
.proudg-quiz-score { display: grid; width: 125px; height: 125px; margin: 18px auto; place-items: center; color: var(--lib-blue); border: 10px solid #cfe9ff; border-radius: 50%; font-size: 29px; font-weight: 850; }
.proudg-library-question-nav { display: grid; grid-template-columns: repeat(5,1fr); gap: 5px; margin-bottom: 9px; }
.proudg-library-question-nav button { display: grid; height: 30px; place-items: center; color: #4e6b84; border: 1px solid #c8d9e8; border-radius: 7px; background: #fff; font-size: 10px; cursor: pointer; }
.proudg-library-question-nav button.is-current { color: #fff; border-color: var(--lib-blue); background: var(--lib-blue); }
.proudg-library-question-nav button.is-answered { color: #116446; border-color: #a5dcc8; background: #eaf8f2; }
.proudg-library-quiz-sidebar .proudg-library-side-card { flex: 0 0 auto; }
.proudg-library-quiz-status > strong { display: block; color: var(--lib-blue); font-size: 32px; line-height: 1; }
.proudg-library-quiz-status p { margin: 6px 0 0; color: var(--lib-muted); font-size: 10px; line-height: 1.4; }
.proudg-library-quiz-navigator > small { display: block; margin-top: 7px; color: var(--lib-muted); font-size: 9px; line-height: 1.35; }
.proudg-library-side-card > small { color: var(--lib-muted); font-size: 9px; line-height: 1.35; }
.proudg-library-mastery { display: flex; align-items: center; gap: 11px; }
.proudg-library-mastery strong { color: var(--lib-green); font-size: 29px; line-height: 1; }
.proudg-library-mastery span { color: var(--lib-muted); font-size: 9px; line-height: 1.4; }

@media (max-width: 960px) {
  .proudg-library-unit-hero__card { grid-template-columns: 62px minmax(0,1fr) 245px; }
  .proudg-library-panel-layout, .proudg-library-quiz-layout { grid-template-columns: minmax(0,1fr) 265px; }
  .proudg-library-concept-map__items article { width: 155px; }
}

@media (max-width: 800px) {
  .proudg-library-archive__hero-grid, .proudg-library-course__hero-grid { grid-template-columns: minmax(0,1fr) 175px; }
  .proudg-library-archive__owl img { width: 155px; }
  .proudg-library-archive__owl p { width: 180px; }
  .proudg-library-unit-hero__card { grid-template-columns: 58px minmax(0,1fr); }
  .proudg-library-hero-modes { grid-column: 1 / -1; padding: 10px 0 0; border-top: 1px solid #cfe0ee; border-left: 0; }
  .proudg-library-hero-modes header { margin-bottom: 6px; }
  .proudg-library-panel-layout { grid-template-areas: "sidebar" "primary"; grid-template-columns: 1fr; }
  .proudg-library-quiz-layout { grid-template-areas: "primary" "sidebar"; grid-template-columns: 1fr; }
  .proudg-library-panel-sidebar__sticky { position: static; max-height: none; padding-right: 0; overflow: visible; }
  .proudg-library-side-toc__body { max-height: 245px; }
  .proudg-library-side-toc label, .proudg-library-side-toc select { display: none; }
  .proudg-library-side-toc ol { display: block; max-height: 200px; }
  .proudg-library-concept-map { min-height: auto; }
  .proudg-library-concept-map::before, .proudg-library-concept-map::after { display: none; }
  .proudg-library-concept-map__center { position: static; width: auto; height: auto; border: 0; border-radius: 11px; transform: none; }
  .proudg-library-concept-map__items { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; margin-top: 9px; }
  .proudg-library-concept-map__items article { position: static; width: auto; min-height: 58px; transform: none !important; }
  .proudg-library-subject-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 680px) {
  .proudg-library-shell { width: min(100% - 22px,1180px); }
  .proudg-library-archive__hero-grid, .proudg-library-course__hero-grid { grid-template-columns: 1fr; }
  .proudg-library-archive__owl { display: none; }
  .proudg-library-course__quick { display: flex; }
  .proudg-library-archive__stats { width: 100%; }
  .proudg-library-archive__stats strong { min-width: 0; flex: 1; padding: 10px; font-size: 18px; }
  .proudg-library-archive__stats strong small { display: block; font-size: 8px; }
  .proudg-library-catalog-tools, .proudg-library-section-heading, .proudg-library-course__objective { align-items: stretch; flex-direction: column; }
  .proudg-library-catalog-tools { display: flex; }
  .proudg-library-catalog-tools--simple { align-items: stretch; }
  .proudg-library-catalog-tools--simple > span { padding: 0 4px; }
  .proudg-library-catalog-tools > div { overflow-x: auto; }
  .proudg-library-section-heading p { text-align: left; }
  .proudg-library-shelf__header { grid-template-columns: 55px minmax(0,1fr); padding: 15px; }
  .proudg-library-bookmark { width: 51px; height: 61px; }
  .proudg-library-shelf__action { grid-column: 1 / -1; align-items: center; flex-direction: row; gap: 6px; padding: 10px 0 0; border-top: 1px solid var(--lib-line); border-left: 0; }
  .proudg-library-shelf__action strong { font-size: 20px; }
  .proudg-library-shelf__action a { margin: 0 0 0 auto; }
  .proudg-library-unit-grid { grid-template-columns: 1fr; padding: 10px; }
  .proudg-library-course__metrics strong { min-width: 0; flex: 1; margin-right: 10px; padding-right: 10px; font-size: 18px; }
  .proudg-library-course-unit { grid-template-columns: 48px minmax(0,1fr) 48px; gap: 9px; padding: 9px; }
  .proudg-library-course-unit__index { min-height: 50px; }
  .proudg-library-course-unit__open { grid-column: auto; text-align: right; }
  .proudg-library-unit-hero__card { grid-template-columns: 52px minmax(0,1fr); gap: 11px; padding: 11px; }
  .proudg-library-unit-seal { width: 49px; height: 58px; }
  .proudg-library-unit-seal strong { font-size: 21px; }
  .proudg-library-hero-modes { grid-column: 1 / -1; }
  .proudg-library-panel__primary, .proudg-library-quiz-main { padding: 13px; }
  .proudg-library-side-toc { max-height: 285px; flex: none; }
  .proudg-library-article { padding-inline: 1px; font-size: 15px; }
  .proudg-library-article h2 { font-size: 22px; }
  .proudg-library-article h3 { font-size: 16px; }
  .proudg-topic-remember { grid-template-columns: 1fr; }
  .proudg-topic-visual__flow { grid-template-columns: 1fr; gap: 7px; }
  .proudg-topic-visual__flow > i { transform: rotate(90deg); }
  .proudg-topic-visual__flow > div { min-height: 0; }
  .proudg-topic-visual__compare { grid-template-columns: 1fr; }
  .proudg-topic-visual--framework dl > div { grid-template-columns: 1fr; gap: 5px; }
  .proudg-library-concept-map__items, .proudg-library-flashcards > div, .proudg-library-review-guides { grid-template-columns: 1fr; }
  .proudg-library-quiz-navigator .proudg-library-question-nav { grid-template-columns: repeat(6,minmax(24px,1fr)); }
  .proudg-library-flow { flex-direction: column; }
  .proudg-library-flow li:not(:last-child)::after { right: auto; bottom: -11px; }
  .proudg-library-case { grid-template-columns: 1fr; }
  .proudg-library-quiz-card { padding: 18px; }
  .proudg-library-archive--compact .proudg-library-archive__hero-grid { grid-template-columns: minmax(0,1fr) 82px; min-height: 185px; }
  .proudg-library-archive__compact-owl { display: block; width: 78px; }
  .proudg-library-subject-grid { grid-template-columns: 1fr; }
}

/* Portada Biblioteca beta.11: hero visual, compacto y sin rutas ficticias. */
.proudg-library-archive--showcase .proudg-library-archive__hero {
  position: relative;
  isolation: isolate;
  padding: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 18%, rgba(22, 178, 255, .22), transparent 27%),
    linear-gradient(118deg, #031a3a 0%, #063c79 61%, #087bd0 100%);
}
.proudg-library-archive--showcase .proudg-library-archive__hero::before,
.proudg-library-archive--showcase .proudg-library-archive__hero::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
  border-radius: 50%;
}
.proudg-library-archive--showcase .proudg-library-archive__hero::before {
  width: 1050px;
  height: 370px;
  bottom: -245px;
  left: -210px;
  background: rgba(0, 136, 228, .34);
  transform: rotate(5deg);
}
.proudg-library-archive--showcase .proudg-library-archive__hero::after {
  width: 700px;
  height: 320px;
  right: -275px;
  bottom: -205px;
  background: rgba(0, 40, 99, .3);
  transform: rotate(-10deg);
}
.proudg-library-archive--showcase .proudg-library-archive__hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 315px;
  gap: 26px;
  align-items: center;
  min-height: 354px;
  padding-block: 26px;
}
.proudg-library-archive--showcase .proudg-library-archive__hero-copy {
  min-width: 0;
}
.proudg-library-archive--showcase .proudg-library-archive__eyebrow,
.proudg-library-archive--showcase .proudg-library-archive__hero > .proudg-library-shell > div:first-child > span {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  color: #65deff;
  border: 1px solid rgba(82, 211, 255, .54);
  border-radius: 999px;
  background: rgba(2, 39, 85, .34);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.proudg-library-archive--showcase .proudg-library-archive__hero h1 {
  margin: 12px 0 5px;
  color: #fff;
  font-size: clamp(42px, 4.5vw, 59px);
  font-weight: 800;
  letter-spacing: -.05em;
  line-height: .98;
}
.proudg-library-archive--showcase .proudg-library-archive__hero h1 em {
  color: #19cdf5;
  font-style: normal;
}
.proudg-library-archive--showcase .proudg-library-archive__hero-copy > p {
  max-width: 760px;
  margin: 0 0 16px;
  color: #dcedfb;
  font-size: 14px;
  line-height: 1.5;
}
.proudg-library-archive__search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 137px;
  gap: 16px;
  align-items: center;
}
.proudg-library-catalog-tools--hero {
  min-width: 0;
  padding: 5px;
  border-color: rgba(121, 212, 255, .72);
  border-radius: 13px;
  background: #fff;
  box-shadow: 0 11px 24px rgba(0, 10, 35, .23), 0 0 0 1px rgba(30, 184, 255, .13);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.proudg-library-catalog-tools--hero:focus-within {
  border-color: #3bd5ff;
  box-shadow: 0 12px 28px rgba(0, 10, 35, .25), 0 0 0 4px rgba(40, 197, 245, .2);
}
.proudg-library-catalog-tools--hero label {
  width: 100%;
  min-width: 0;
  padding: 0 13px;
  color: #1c5c91;
  border: 0;
  background: transparent;
}
.proudg-library-catalog-tools--hero label > i {
  flex: 0 0 auto;
  color: #226ba5;
  font-size: 21px;
}
.proudg-library-catalog-tools--hero input {
  min-width: 0;
  padding: 11px 0;
  color: #183d62;
  font-size: 13px;
}
.proudg-library-catalog-tools--hero input::placeholder {
  color: #788697;
  opacity: 1;
}
.proudg-library-archive__availability {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  min-height: 51px;
  padding-left: 15px;
  color: #dbefff;
  border-left: 1px solid rgba(204, 235, 255, .55);
}
.proudg-library-archive__availability strong {
  color: #19cef5;
  font-size: 34px;
  line-height: 1;
}
.proudg-library-archive__availability span {
  display: flex;
  flex-direction: column;
  font-size: 11px;
  line-height: 1.15;
}
.proudg-library-archive__availability b { font-weight: 500; }
.proudg-library-archive__modes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}
.proudg-library-archive__modes li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 14px;
  gap: 9px;
  align-items: center;
  min-width: 0;
  min-height: 61px;
  padding: 8px 11px;
  color: #fff;
  border: 1px solid rgba(142, 211, 255, .37);
  border-radius: 999px;
  background: rgba(5, 37, 79, .48);
  box-shadow: inset 0 1px rgba(255, 255, 255, .04);
}
.proudg-library-archive__modes li > i:first-child {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  background: #188cd4;
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, .08), 0 5px 13px rgba(0, 0, 0, .16);
  font-size: 17px;
}
.proudg-library-archive__modes .is-review > i:first-child { background: #09ad88; }
.proudg-library-archive__modes .is-quiz > i:first-child { background: #7254d5; }
.proudg-library-archive__modes li > span { min-width: 0; }
.proudg-library-archive__modes strong,
.proudg-library-archive__modes small { display: block; }
.proudg-library-archive__modes strong { font-size: 12px; line-height: 1.2; }
.proudg-library-archive__modes small {
  margin-top: 2px;
  color: #a9cce7;
  font-size: 9px;
  line-height: 1.25;
}
.proudg-library-archive__modes li > i:last-child { color: #a9d7f5; font-size: 18px; }
.proudg-library-archive__owl-scene {
  position: relative;
  align-self: stretch;
  min-height: 302px;
}
.proudg-library-archive__owl-scene > img {
  position: absolute;
  z-index: 2;
  width: 255px;
  height: auto;
  bottom: -28px;
  left: -3px;
  filter: drop-shadow(0 16px 20px rgba(0, 17, 43, .36));
}
.proudg-library-archive__owl-tip {
  position: absolute;
  z-index: 3;
  top: 17px;
  right: -1px;
  width: 174px;
  padding: 13px 37px 13px 14px;
  color: #17385d;
  border: 1px solid rgba(191, 226, 249, .95);
  border-radius: 22px;
  background: rgba(250, 253, 255, .97);
  box-shadow: 0 11px 24px rgba(0, 24, 61, .2);
}
.proudg-library-archive__owl-tip::after {
  position: absolute;
  left: 23px;
  bottom: -12px;
  width: 23px;
  height: 23px;
  content: "";
  border-right: 1px solid rgba(191, 226, 249, .95);
  border-bottom: 1px solid rgba(191, 226, 249, .95);
  background: #fff;
  transform: rotate(45deg);
}
.proudg-library-archive__owl-tip strong,
.proudg-library-archive__owl-tip span { position: relative; z-index: 1; display: block; }
.proudg-library-archive__owl-tip strong { margin-bottom: 3px; font-size: 10px; }
.proudg-library-archive__owl-tip span { font-size: 11px; line-height: 1.35; }
.proudg-library-archive__owl-tip > i {
  position: absolute;
  z-index: 1;
  top: 18px;
  right: 13px;
  color: #f4b000;
  font-size: 25px;
}
.proudg-library-archive__motto {
  position: absolute;
  z-index: 3;
  right: 2px;
  bottom: 13px;
  width: 112px;
  color: #d7f4ff;
  font-family: "Brush Script MT", "Segoe Script", cursive;
  font-size: 17px;
  line-height: 1.1;
  text-align: center;
  transform: rotate(-6deg);
}
.proudg-library-archive__motto::after {
  display: block;
  width: 75px;
  height: 2px;
  margin: 6px auto 0;
  content: "";
  border-radius: 999px;
  background: #25d5ff;
  transform: rotate(-3deg);
}
.proudg-library-archive--showcase .proudg-library-archive__body { padding-top: 14px; }
.proudg-library-archive--showcase .proudg-library-archive__heading { margin: 10px 0; }
.proudg-library-archive--showcase .proudg-library-archive__heading h2 { font-size: 22px; }

@media (max-width: 960px) {
  .proudg-library-archive--showcase .proudg-library-archive__hero-grid { grid-template-columns: minmax(0, 1fr) 255px; }
  .proudg-library-archive__owl-scene > img { width: 222px; left: 0; }
  .proudg-library-archive__owl-tip { width: 158px; padding-right: 34px; }
  .proudg-library-archive__motto { right: -4px; width: 94px; font-size: 15px; }
  .proudg-library-archive__modes li { grid-template-columns: 36px minmax(0, 1fr) 10px; gap: 7px; padding-inline: 8px; }
  .proudg-library-archive__modes li > i:first-child { width: 36px; height: 36px; }
}

@media (max-width: 800px) {
  .proudg-library-archive--showcase .proudg-library-archive__hero-grid { grid-template-columns: minmax(0, 1fr) 185px; gap: 12px; min-height: 324px; }
  .proudg-library-archive--showcase .proudg-library-archive__hero h1 { font-size: clamp(36px, 6vw, 46px); }
  .proudg-library-archive__search-row { grid-template-columns: minmax(0, 1fr) 112px; gap: 9px; }
  .proudg-library-archive__availability { gap: 6px; padding-left: 10px; }
  .proudg-library-archive__availability strong { font-size: 27px; }
  .proudg-library-archive__availability span { font-size: 9px; }
  .proudg-library-archive__modes { gap: 6px; }
  .proudg-library-archive__modes li { grid-template-columns: 34px minmax(0, 1fr); min-height: 55px; padding: 7px 9px; border-radius: 15px; }
  .proudg-library-archive__modes li > i:first-child { width: 34px; height: 34px; font-size: 14px; }
  .proudg-library-archive__modes li > i:last-child { display: none; }
  .proudg-library-archive__modes small { display: none; }
  .proudg-library-archive__owl-scene { min-height: 275px; }
  .proudg-library-archive__owl-scene > img { width: 175px; bottom: -23px; left: 0; }
  .proudg-library-archive__owl-tip { top: 24px; right: 0; width: 142px; padding: 10px 30px 10px 11px; border-radius: 17px; }
  .proudg-library-archive__owl-tip strong { font-size: 9px; }
  .proudg-library-archive__owl-tip span { font-size: 9px; }
  .proudg-library-archive__owl-tip > i { top: 15px; right: 10px; font-size: 20px; }
  .proudg-library-archive__motto { display: none; }
}

@media (max-width: 680px) {
  .proudg-library-archive--showcase .proudg-library-archive__hero-grid { display: block; min-height: 0; padding-block: 21px 18px; }
  .proudg-library-archive--showcase .proudg-library-archive__hero-copy { position: relative; z-index: 2; }
  .proudg-library-archive--showcase .proudg-library-archive__eyebrow { max-width: calc(100% - 86px); }
  .proudg-library-archive--showcase .proudg-library-archive__hero h1 { max-width: calc(100% - 83px); margin-top: 10px; font-size: clamp(33px, 10vw, 43px); }
  .proudg-library-archive--showcase .proudg-library-archive__hero-copy > p { margin: 10px 0 13px; font-size: 12px; }
  .proudg-library-archive__owl-scene { position: absolute; z-index: 1; top: 0; right: 0; width: 88px; min-height: 104px; }
  .proudg-library-archive__owl-scene > img { width: 88px; top: 12px; right: -4px; bottom: auto; left: auto; opacity: .96; }
  .proudg-library-archive__owl-tip,
  .proudg-library-archive__motto { display: none; }
  .proudg-library-archive__search-row { grid-template-columns: 1fr; }
  .proudg-library-catalog-tools--hero { width: 100%; }
  .proudg-library-catalog-tools--hero label { padding-inline: 9px; }
  .proudg-library-catalog-tools--hero input { font-size: 12px; }
  .proudg-library-archive__availability {
    display: flex;
    min-height: 0;
    padding: 2px 3px 0;
    border-left: 0;
  }
  .proudg-library-archive__availability strong { font-size: 20px; }
  .proudg-library-archive__availability span { display: block; font-size: 10px; }
  .proudg-library-archive__availability b { display: inline; }
  .proudg-library-archive__modes { margin-top: 10px; }
  .proudg-library-archive__modes li { grid-template-columns: 30px minmax(0, 1fr); min-height: 46px; padding: 6px; }
  .proudg-library-archive__modes li > i:first-child { width: 30px; height: 30px; font-size: 13px; }
  .proudg-library-archive__modes strong { font-size: 10px; }
  .proudg-library-archive--showcase .proudg-library-archive__body { padding-top: 10px; }
}

@media (max-width: 390px) {
  .proudg-library-archive__modes { grid-template-columns: 1fr; }
  .proudg-library-archive__modes li { border-radius: 12px; }
}