/* ======================================================
   コラム一覧 固有スタイル
====================================================== */
.columns-hero {
  padding: 160px 0 80px;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: flex-start; 
}
.columns-hero > .container {
  width: 100%; /* ← 追加 */
}

/* フィーチャー記事 */
.feature-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: var(--section-gap);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.25s;
  text-decoration: none;
  color: inherit;
}
.feature-article:hover { border-color: var(--teal); }

.fa-img {
  height: 100%;  /* 360px → 100% */
  overflow: hidden;
}
.fa-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.feature-article:hover .fa-img img {
  transform: scale(1.04);
}

.fa-body {
  padding: 48px 48px 48px 0;
}
.fa-label {
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.fa-label::before {
  content: 'Featured';
  background: rgba(0,128,128,0.1);
  color: var(--teal);
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
}
.fa-title {
  font-family: var(--font-ja-heading);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 400;
  color: var(--charcoal);
  line-height: 1.5;
  margin-bottom: 16px;
}
.fa-excerpt {
  font-size: 16px;
  color: var(--mid-gray);
  line-height: 1.8;
  margin-bottom: 28px;
}
.fa-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--mid-gray);
}
.fa-arrow {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  transition: gap 0.2s;
}
.feature-article:hover .fa-arrow { gap: 12px; }
.fa-arrow svg {
  width: 14px; height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* カテゴリフィルター */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.1em;
  padding: 8px 18px;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--mid-gray);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn.active,
.filter-btn:hover {
  border-color: var(--teal);
  color: var(--teal);
  background: rgba(0,128,128,0.04);
}

/* 記事グリッド */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
  text-decoration: none;
  display: block;
  color: inherit;
}
.article-card:hover {
  border-color: var(--teal);
  transform: translateY(-4px);
}
.ac-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s;
}
.article-card:hover .ac-img { transform: scale(1.04); }
.ac-body {
  padding: 24px;
}
.ac-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.ac-date {
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--mid-gray);
}
.ac-title {
  font-family: var(--font-ja-heading);
  font-size: 18px;
  font-weight: 500;
  color: var(--charcoal);
  line-height: 1.65;
  margin-bottom: 10px;
}
.ac-excerpt {
  font-size: 15px;
  line-height: 1.78;
  color: var(--mid-gray);
  line-height: 1.8;
}
.ac-read-more {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--teal);
  margin-top: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
/* ---- CTA ---- */
.cta-section {
  padding: var(--section-gap) 0;
  background: var(--teal);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: 'TRANSFORM';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-en-heading);
  font-size: 160px;
  font-weight: 300;
  color: rgba(255,255,255,0.04);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: 0.1em;
}
.cta-label {
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.cta-title {
  font-family: var(--font-ja-heading);
  font-size: clamp(26px, 3.5vw, 42px);
  font-weight: 300;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 16px;
}
.cta-sub {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
}


/* レスポンシブ */
@media (max-width: 1024px) {
  .feature-article { grid-template-columns: 1fr; }
  .fa-img { height: 280px; }
  .fa-body { padding: 32px; }
  .articles-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .articles-grid { grid-template-columns: 1fr; }
  .fa-img { height: 220px; }
}