/*
|---------------------------------------------------------------
| qinc2026-top-knowledge.css - コラム & ホワイトペーパーCTA
|---------------------------------------------------------------
*/

/* ==========================================================================
   Section
   ========================================================================== */
.top-knowledge {
  background-color: var(--color-white);
  padding: var(--section-padding-y) 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.top-knowledge__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-blue-grey);
  margin-bottom: 60px;
}

.top-knowledge__label {
  display: block;
  font-family: var(--font-family-en);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.43;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-blue01);
  margin-bottom: 12px;
}

.top-knowledge__title {
  margin: 0 0 16px;
  font-weight: 900;
  font-size: 36px;
  line-height: 1.11;
  color: var(--color-blue01);
}

.top-knowledge__lead {
  margin: 0;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-blue01);
}

.top-knowledge__link {
  font-weight: 700;
  font-size: 16px;
  line-height: 1.25;
  color: var(--color-blue01);
  text-decoration: underline;
  white-space: nowrap;
  flex-shrink: 0;
}

.top-knowledge__link:hover {
  opacity: 0.7;
}

/* ==========================================================================
   Tags (shared)
   ========================================================================== */
.top-knowledge__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.top-knowledge__tag {
  display: inline-block;
  padding: 4px 8px;
  background-color: var(--color-blue01);
  border-radius: 4px;
  font-family: var(--font-family-en);
  font-weight: 700;
  font-size: 10px;
  line-height: 1.5;
  letter-spacing: 0.5px;
  color: var(--color-white);
}

/* ==========================================================================
   Grid
   ========================================================================== */
.top-knowledge__grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 100px;
}

/* ==========================================================================
   Featured (left - large image card)
   ========================================================================== */
.top-knowledge__featured {
  position: relative;
  display: block;
  border-radius: 16px;
  overflow: hidden;
  min-height: 450px;
  text-decoration: none;
  color: var(--color-white);
  transition: box-shadow 0.3s ease;
}

.top-knowledge__featured:hover {
  color: var(--color-white);
  text-decoration: none;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.top-knowledge__featured-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.top-knowledge__featured:hover .top-knowledge__featured-img {
  transform: scale(1.05);
}

.top-knowledge__featured-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #ad8d4f, rgba(173, 141, 79, 0.5) 50%, rgba(173, 141, 79, 0));
}

.top-knowledge__featured-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px;
}

.top-knowledge__featured .top-knowledge__tags {
  margin-bottom: 16px;
}

.top-knowledge__featured-title {
  margin: 0 0 12px;
  font-weight: 700;
  font-size: 30px;
  line-height: 1.5;
  color: var(--color-white);
}

.top-knowledge__featured-desc {
  margin: 0 0 16px;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-white);
}

.top-knowledge__featured-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-knowledge__featured-date {
  font-family: var(--font-family-en);
  font-weight: 600;
  font-size: 12px;
  line-height: 1.33;
  color: var(--color-white);
}

.top-knowledge__featured-more {
  font-weight: 700;
  font-size: 14px;
  line-height: 1.43;
  color: var(--color-white);
  text-decoration: underline;
}

/* ==========================================================================
   Sub articles (right - 2 stacked cards)
   ========================================================================== */
.top-knowledge__sub {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.top-knowledge__article {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-blue-grey);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  text-decoration: none;
  color: var(--color-blue01);
  transition: box-shadow 0.2s ease;
}

.top-knowledge__article:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: var(--color-blue01);
}

.top-knowledge__article .top-knowledge__tags {
  align-self: flex-start;
  margin-bottom: 12px;
}

.top-knowledge__article-title {
  margin: 0 0 8px;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-blue01);
}

.top-knowledge__article-desc {
  margin: 0 0 auto;
  font-weight: 400;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-blue01);
  padding-bottom: 12px;
}

.top-knowledge__article-author {
  font-family: var(--font-family-en);
  font-weight: 500;
  font-size: 12px;
  line-height: 1.33;
  color: #0367a5;
}

/* ==========================================================================
   Whitepaper CTA
   ========================================================================== */
.top-knowledge__wp-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 40px 48px;
  background: linear-gradient(to right, #eff6ff, #f8fafc);
  border: 1px solid var(--color-blue01);
  border-radius: 8px;
}

.top-knowledge__wp-cta-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.top-knowledge__wp-cta-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.top-knowledge__wp-cta-title {
  font-weight: 700;
  font-size: 24px;
  line-height: 1.33;
  color: var(--color-blue01);
}

.top-knowledge__wp-cta-desc {
  margin: 0;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-blue01);
}

.top-knowledge__wp-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 263px;
  height: 50px;
  background-color: var(--color-blue01);
  color: var(--color-white);
  border-radius: 4px;
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  text-decoration: none;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
              0 4px 6px -4px rgba(0, 0, 0, 0.1);
  transition: opacity 0.2s ease;
}

.top-knowledge__wp-cta-btn:hover {
  opacity: 0.8;
  color: var(--color-white);
  text-decoration: none;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media screen and (max-width: 1024px) {
  .top-knowledge {
    padding: var(--section-padding-y-md) 0;
  }

  .top-knowledge__grid {
    grid-template-columns: 1fr;
    margin-bottom: 60px;
  }

  .top-knowledge__featured {
    min-height: 400px;
  }

  .top-knowledge__featured-title {
    font-size: 24px;
  }

  .top-knowledge__sub {
    flex-direction: row;
  }

  .top-knowledge__title {
    font-size: 28px;
  }

  .top-knowledge__wp-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
  }

  .top-knowledge__wp-cta-btn {
    align-self: center;
  }
}

@media screen and (max-width: 768px) {
  .top-knowledge {
    padding: var(--section-padding-y-sp) 0;
  }

  .top-knowledge__header {
    gap: 16px;
    margin-bottom: 32px;
  }

  .top-knowledge__title {
    font-size: 24px;
  }

  .top-knowledge__grid {
    margin-bottom: 40px;
  }

  .top-knowledge__featured {
    min-height: 320px;
  }

  .top-knowledge__featured-body {
    padding: 24px;
  }

  .top-knowledge__featured-title {
    font-size: 20px;
  }

  .top-knowledge__featured-desc {
    font-size: 13px;
  }

  .top-knowledge__sub {
    flex-direction: column;
  }

  .top-knowledge__article-title {
    font-size: 16px;
  }

  .top-knowledge__featured-desc,
  .top-knowledge__article-desc {
    display: none;
  }

  .top-knowledge__wp-cta {
    gap: 24px;
    padding: 24px;
  }

  .top-knowledge__wp-cta-title {
    font-size: 20px;
  }

  .top-knowledge__wp-cta-btn {
    width: 100%;
    max-width: 300px;
  }
}

@media screen and (max-width: 600px) {
  .top-knowledge__header {
    align-items: flex-start;
  }
}