/* 原创教材页 */

.xhh-books .md-typeset > h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--xhh-border);
}

.xhh-books .md-typeset > h2:first-of-type {
  margin-top: 1.25rem;
}

.xhh-books .md-typeset > hr {
  margin: 2.25rem 0;
  border: none;
  height: 1px;
  background: var(--xhh-border);
}

/* 基本信息：左图 + 右栏 */
.xhh-book-hero {
  display: grid;
  grid-template-columns: minmax(11rem, 17.5rem) minmax(0, 1fr);
  gap: 2rem 2.5rem;
  align-items: start;
  margin: 0.5rem 0 0.25rem;
}

.xhh-book-hero__media {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.85rem;
}

.xhh-book-hero__media img {
  display: block;
  width: 100%;
  max-width: 17.5rem;
  margin: 0;
  padding: 0.5rem;
  background: #fff;
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  box-shadow: var(--xhh-shadow-lg);
}

[data-md-color-scheme="slate"] .xhh-book-hero__media img {
  background: #fff;
}

.xhh-book-actions {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  width: 100%;
  max-width: 17.5rem;
}

.xhh-book-btn {
  display: block;
  width: 100%;
  padding: 0.72rem 1rem;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
  text-decoration: none !important;
  border-radius: 6px;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

/* 覆盖 .md-typeset 对链接的默认样式 */
.xhh-books .md-typeset .xhh-book-btn,
.xhh-books .md-typeset .xhh-book-btn:hover,
.xhh-books .md-typeset .xhh-book-btn:focus {
  text-decoration: none !important;
}

.xhh-book-btn--primary {
  color: #fff !important;
  background: var(--md-primary-fg-color);
  border: 1px solid var(--md-primary-fg-color--dark);
  box-shadow: 0 2px 10px rgba(13, 148, 136, 0.35);
}

.xhh-book-btn--primary:hover {
  color: #fff !important;
  background: var(--md-primary-fg-color--dark);
  filter: none;
  transform: translateY(-1px);
}

.xhh-book-btn--muted {
  color: var(--md-primary-fg-color--dark) !important;
  background: color-mix(in srgb, var(--md-primary-fg-color) 14%, var(--xhh-surface-elevated));
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 45%, var(--xhh-border));
  cursor: not-allowed;
  pointer-events: none;
  opacity: 0.92;
}

[data-md-color-scheme="slate"] .xhh-book-btn--muted {
  color: var(--md-primary-fg-color--light) !important;
  background: color-mix(in srgb, var(--md-primary-fg-color) 22%, var(--xhh-surface-elevated));
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 55%, var(--xhh-border));
}

.xhh-book-hero__info .md-typeset table {
  margin: 0;
}

.xhh-book-hero__info .md-typeset table th {
  width: 5.5rem;
  font-weight: 600;
  color: var(--xhh-muted);
  background: var(--xhh-surface);
}

.xhh-book-hero__info .md-typeset table td {
  color: var(--xhh-text);
}

@media screen and (max-width: 52rem) {
  .xhh-book-hero {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .xhh-book-hero__media {
    align-items: center;
  }

  .xhh-book-actions {
    max-width: 14rem;
  }
}

/* 教学资源 */
.xhh-book-resources-intro,
.xhh-book-reviews-intro {
  margin-top: -0.35rem;
  margin-bottom: 1.1rem;
  font-size: 0.9rem;
  color: var(--xhh-muted);
}

.xhh-book-resources {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
  margin: 0;
}

.xhh-book-resource {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 1.15rem 1.25rem 1.1rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  box-shadow: var(--xhh-shadow);
}

.xhh-book-resource__title {
  margin: 0 0 0.65rem;
  padding: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--md-primary-fg-color--dark);
  border: none;
}

[data-md-color-scheme="slate"] .xhh-book-resource__title {
  color: var(--md-primary-fg-color--light);
}

.xhh-book-resource__body,
.xhh-book-resource__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--xhh-text);
}

.xhh-book-resource__note {
  margin-top: 0.65rem;
  font-size: 0.82rem;
  color: var(--xhh-muted);
}

.xhh-book-resource__list {
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--xhh-text);
}

.xhh-book-resource__list li + li {
  margin-top: 0.35rem;
}

.xhh-book-resource__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin: 0.85rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--xhh-border);
}

.xhh-books .md-typeset .xhh-book-resource__link {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none !important;
  color: var(--md-primary-fg-color--dark) !important;
  background: color-mix(in srgb, var(--md-primary-fg-color) 10%, var(--xhh-surface-elevated));
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 35%, var(--xhh-border));
  border-radius: 6px;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.xhh-books .md-typeset .xhh-book-resource__link:hover {
  color: var(--md-primary-fg-color--dark) !important;
  background: color-mix(in srgb, var(--md-primary-fg-color) 18%, var(--xhh-surface-elevated));
  border-color: var(--md-primary-fg-color);
}

.xhh-books .md-typeset .xhh-book-resource__link--primary {
  color: #fff !important;
  background: var(--md-primary-fg-color);
  border-color: var(--md-primary-fg-color--dark);
}

.xhh-books .md-typeset .xhh-book-resource__link--primary:hover {
  color: #fff !important;
  background: var(--md-primary-fg-color--dark);
}

[data-md-color-scheme="slate"] .xhh-books .md-typeset .xhh-book-resource__link {
  color: var(--md-primary-fg-color--light) !important;
}

/* 读者评价 */
.xhh-book-reviews {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr));
  gap: 1rem;
  margin: 0;
}

.xhh-book-review {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 1.2rem 1.3rem 1.1rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  box-shadow: var(--xhh-shadow);
}

.xhh-book-review__quote {
  flex: 1;
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.92rem;
  font-style: normal;
  line-height: 1.65;
  color: var(--xhh-text);
}

.xhh-book-review__quote::before {
  content: "\201C";
  margin-right: 0.1em;
  font-size: 1.15em;
  font-weight: 700;
  line-height: 1;
  color: var(--md-primary-fg-color);
}

.xhh-book-review__meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--xhh-border);
}

.xhh-book-review__name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--md-primary-fg-color--dark);
}

[data-md-color-scheme="slate"] .xhh-book-review__name {
  color: var(--md-primary-fg-color--light);
}

.xhh-book-review__role {
  font-size: 0.78rem;
  color: var(--xhh-muted);
}