:root {
  --edu-cream: #f5f0e8;
  --edu-gold: #d6933d;
  --edu-gold-dark: #9c551e;
  --edu-ink: #17171a;
  --edu-muted: #58606c;
  --edu-line: rgba(23, 23, 26, 0.08);
  --edu-shadow: 0 22px 50px rgba(28, 27, 24, 0.12);
}

body {
  background: linear-gradient(180deg, #f7f2e9 0%, #fbfaf7 32%, #f5f3ef 100%);
  color: var(--edu-ink);
}

.edu-homepage .quarto-title-block {
  display: none;
}

.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--edu-line);
  box-shadow: 0 10px 24px rgba(35, 24, 12, 0.06);
  padding-block: 0.8rem;
}

.navbar-brand {
  color: var(--edu-ink) !important;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.navbar-nav .nav-link {
  color: var(--edu-ink) !important;
  font-weight: 600;
}

.navbar-nav .nav-link:hover {
  color: var(--edu-gold-dark) !important;
}

main {
  padding-block: 0 !important;
}

.edu-home {
  max-width: 1280px;
  margin-inline: auto;
  padding: 2rem 1.25rem 4rem;
}

.edu-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 2rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--edu-line);
  border-radius: 2rem;
  background: linear-gradient(135deg, rgba(244, 222, 183, 0.75), rgba(255, 255, 255, 0.2));
  box-shadow: var(--edu-shadow);
}

.edu-kicker {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--edu-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--edu-gold-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.edu-hero h1 {
  max-width: 650px;
  margin: 1rem 0;
  font-size: clamp(2.7rem, 5vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.07em;
  line-height: 0.98;
}

.edu-hero-text > p:not(.edu-kicker) {
  max-width: 600px;
  color: var(--edu-muted);
  font-size: 1.15rem;
  line-height: 1.7;
}

.edu-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.edu-button {
  display: inline-block;
  padding: 0.8rem 1.3rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: linear-gradient(135deg, #f0b86a, #d77d35);
  box-shadow: 0 12px 22px rgba(190, 110, 35, 0.2);
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.edu-button:hover {
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

.edu-button.secondary {
  border-color: var(--edu-line);
  background: white;
  box-shadow: none;
  color: var(--edu-ink);
}

.edu-feature-spotlight,
.edu-story-card {
  overflow: hidden;
  border: 1px solid var(--edu-line);
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 15px 32px rgba(28, 23, 18, 0.09);
}

.edu-feature-spotlight .feature-image,
.edu-story-card .quarto-figure img {
  display: block;
  width: 100%;
  height: 240px;
  margin: 0;
  object-fit: cover;
}

.edu-story-card .quarto-figure,
.edu-story-card figure {
  margin: 0;
}

.edu-story-card figcaption {
  display: none;
}

.edu-feature-spotlight .feature-image {
  height: 330px;
}

.edu-feature-copy,
.story-body {
  padding: 1.2rem 1.3rem 1.4rem;
}

.edu-feature-copy .tag {
  color: var(--edu-gold-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.edu-feature-copy h3,
.edu-story-card h3 {
  margin: 0.6rem 0;
  font-size: clamp(1.4rem, 2vw, 2rem);
  letter-spacing: -0.05em;
  line-height: 1.15;
}

.edu-feature-copy p,
.edu-story-card .story-body > p:not(.story-meta) {
  color: var(--edu-muted);
  line-height: 1.65;
}

.edu-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.edu-topic {
  display: inline-block;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--edu-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--edu-muted);
  font-weight: 700;
}

.edu-topic.active {
  border-color: var(--edu-ink);
  background: var(--edu-ink);
  color: white;
}

.edu-section {
  margin-top: 4rem;
}

.edu-section > h2 {
  display: inline-block;
  margin: 0 1rem 1.2rem 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  letter-spacing: -0.06em;
}

.edu-section-link {
  color: var(--edu-gold-dark);
  font-weight: 700;
}

.edu-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.3rem;
}

.edu-story-card h3 {
  font-size: 1.45rem;
}

.edu-story-card .story-body > p > a {
  color: var(--edu-ink);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1.15;
  text-decoration: none;
}

.edu-story-card .story-body > p > a:hover {
  color: var(--edu-gold-dark);
}

.story-meta {
  margin: 0;
  color: var(--edu-gold-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.edu-quote {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 1.6rem;
  margin-top: 4rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  border-radius: 1.8rem;
  background: linear-gradient(135deg, #17171a, #49351f);
  box-shadow: 0 28px 48px rgba(22, 22, 24, 0.18);
  color: white;
}

.edu-quote h2 {
  font-size: clamp(2rem, 3vw, 3.1rem);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.edu-quote > p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
}

.edu-quote-panel {
  display: grid;
  gap: 1rem;
}

.edu-quote-card {
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.08);
}

.edu-quote-card p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
}

.edu-newsletter {
  margin-top: 4rem;
  padding: clamp(1.5rem, 3vw, 2.7rem);
  border: 1px solid var(--edu-line);
  border-radius: 1.8rem;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 30px rgba(27, 23, 18, 0.06);
}

.edu-newsletter h2 {
  margin-top: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  letter-spacing: -0.06em;
}

.edu-newsletter > p {
  color: var(--edu-muted);
  line-height: 1.7;
}

.about-page main.content {
  max-width: 860px;
  margin-inline: auto;
  padding: 3rem 1.5rem 4rem !important;
}

.about-intro {
  text-align: center;
}

.about-profile {
  width: 156px;
  height: 156px;
  margin: 0 auto 1.5rem;
  padding: 6px;
  overflow: hidden;
  border: 1px solid rgba(214, 147, 61, 0.35);
  border-radius: 50%;
  background: white;
  box-shadow: 0 12px 30px rgba(28, 27, 24, 0.12);
}

.about-profile .quarto-figure,
.about-profile figure,
.about-profile p {
  height: 100%;
  margin: 0;
}

.about-profile img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.about-profile figcaption {
  display: none;
}

.about-intro h2 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.06em;
}

.about-intro > p {
  max-width: 700px;
  margin: 0.8rem auto;
  color: var(--edu-muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.about-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.about-reflections {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--edu-line);
}

.about-reflections h2 {
  margin-bottom: 1.2rem;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
}

.about-reflections blockquote {
  margin: 1rem 0;
  padding: 0.9rem 1.2rem;
  border-left: 3px solid var(--edu-gold);
  border-radius: 0 0.8rem 0.8rem 0;
  background: rgba(255, 255, 255, 0.65);
  color: var(--edu-muted);
  font-size: 1.05rem;
}

.book-shelf {
  margin: 2rem 0;
}

.book-shelf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 2rem 1.4rem;
  align-items: end;
  padding: 1.5rem 1rem 1.2rem;
  border-bottom: 12px solid #8a5a35;
  border-radius: 0.35rem;
  background: linear-gradient(180deg, transparent 93%, rgba(80, 48, 25, 0.12) 93%);
}

.book-card {
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  min-width: 0;
}

.book-card-open {
  display: grid;
  justify-items: center;
  gap: 0.8rem;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--edu-ink);
  text-align: center;
  cursor: pointer;
}

.book-cover {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 175px);
  aspect-ratio: 0.72;
  overflow: hidden;
  border: 1px solid rgba(23, 23, 26, 0.14);
  border-left: 7px solid rgba(23, 23, 26, 0.2);
  border-radius: 0.2rem 0.55rem 0.55rem 0.2rem;
  background: linear-gradient(145deg, #f5f0e8, #e1d3bd);
  box-shadow: 7px 9px 16px rgba(28, 27, 24, 0.2);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.book-card-open:hover .book-cover,
.book-card-open:focus-visible .book-cover {
  transform: translateY(-5px) rotate(-1deg);
  box-shadow: 10px 15px 20px rgba(28, 27, 24, 0.24);
}

.book-cover canvas {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fffdf9;
}

.book-cover-unavailable {
  color: var(--edu-muted);
  font-weight: 800;
}

.book-card-title {
  max-width: 190px;
  font-weight: 700;
  line-height: 1.35;
}

.book-card-hint {
  color: var(--edu-muted);
  font-size: 0.82rem;
}

.book-message {
  padding: 1.3rem 1.5rem;
  border: 1px dashed rgba(23, 23, 26, 0.2);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.55);
  color: var(--edu-muted);
}

.book-reader {
  width: min(1180px, 96vw);
  max-width: none;
  max-height: 96vh;
  padding: 1rem 1.25rem 1.25rem;
  overflow: auto;
  border: 1px solid var(--edu-line);
  border-radius: 1.2rem;
  background: #f0ece5;
  color: var(--edu-ink);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

.book-reader::backdrop {
  background: rgba(18, 19, 21, 0.76);
  backdrop-filter: blur(4px);
}

.book-reader-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.book-reader-header h2 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.book-reader-close,
.book-reader-controls button {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--edu-line);
  border-radius: 999px;
  background: white;
  color: var(--edu-ink);
  font-weight: 700;
  cursor: pointer;
}

.book-reader-controls button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.book-reader-status {
  margin: 1rem 0;
  color: var(--edu-muted);
  text-align: center;
}

.book-reader-error {
  color: #a22d24;
}

.book-reader-stage {
  width: 100%;
  height: min(72vh, 760px);
  min-height: 340px;
  margin: 0.75rem auto;
}

.book-page {
  overflow: hidden;
  border: 1px solid rgba(55, 45, 32, 0.12);
  background: #fffdf9;
  box-shadow: inset 0 0 20px rgba(70, 55, 35, 0.05);
}

.book-page-content {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 1.1rem;
  color: var(--edu-muted);
  font-size: 0.9rem;
}

.book-page-content canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.book-page-number {
  position: absolute;
  right: 0.75rem;
  bottom: 0.5rem;
  color: #777;
  font-size: 0.72rem;
}

.book-reader-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.book-page-count {
  min-width: 130px;
  color: var(--edu-muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 900px) {
  .edu-hero,
  .edu-quote {
    grid-template-columns: 1fr;
  }

  .edu-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .edu-home {
    padding: 1.2rem 0.8rem 3rem;
  }

  .edu-feature-grid {
    grid-template-columns: 1fr;
  }

  .edu-feature-spotlight .feature-image {
    height: 240px;
  }

  .book-reader {
    width: 100vw;
    max-height: 100dvh;
    padding: 0.8rem;
    border-radius: 0;
  }

  .book-reader-stage {
    height: 68vh;
    min-height: 280px;
  }

  .book-reader-controls {
    gap: 0.5rem;
  }

  .book-reader-controls button {
    padding: 0.5rem 0.65rem;
    font-size: 0.8rem;
  }
}