/* ============================================================
   SPIKE Inc. column article components
   ============================================================ */

.post-hero {
  position: relative;
  min-height: min(720px, calc(100vh - 96px));
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--dark);
  color: var(--white);
}
.post-hero-media {
  position: absolute;
  inset: 0;
}
.post-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  filter: saturate(0.92) contrast(0.96);
}
.post-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10,10,9,0.78) 0%, rgba(10,10,9,0.54) 38%, rgba(10,10,9,0.16) 78%),
    linear-gradient(180deg, rgba(10,10,9,0.18) 0%, rgba(10,10,9,0.74) 100%);
}
.post-hero-content {
  position: relative;
  z-index: 1;
  padding-top: 160px;
  padding-bottom: 84px;
}
.post-header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
}
.post-header-cat {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.8px;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.42);
  padding: 5px 13px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
}
.post-header-date {
  font-size: 12px;
  color: rgba(255,255,255,0.72);
  letter-spacing: 0.5px;
}
.post-header-title {
  max-width: 980px;
  font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
  font-size: clamp(34px, 5vw, 70px);
  font-weight: 600;
  line-height: 1.18;
  color: var(--white);
  letter-spacing: 0;
  text-wrap: balance;
}
.post-header-lead {
  max-width: 860px;
  margin-top: 28px;
  color: rgba(255,255,255,0.84);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 2;
}
.post-hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 48px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.76);
  text-transform: uppercase;
}
.post-hero-scroll::before {
  content: '';
  display: block;
  width: 44px;
  height: 1px;
  background: rgba(255,255,255,0.48);
}

.single-post {
  background: var(--white);
}
.post-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 88px 56px 104px;
}
.post-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 2.05;
  margin-bottom: 28px;
}
.post-content .article-lead,
.post-content > p:first-of-type {
  margin-bottom: 44px;
  padding: 0 0 0 26px;
  border-left: 3px solid var(--green);
  color: var(--dark);
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 2;
}
.post-content h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.5;
  letter-spacing: 0.1px;
  margin-top: 72px;
  margin-bottom: 24px;
  padding-top: 0;
  padding-bottom: 14px;
  padding-left: 18px;
  border-top: none;
  border-left: 3px solid var(--green);
  border-bottom: 1px solid var(--border);
}
.post-content h2::before {
  display: none;
}
.post-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-top: 44px;
  margin-bottom: 14px;
}
.article-marker {
  background: linear-gradient(transparent 58%, rgba(60,84,48,0.14) 58%);
}
.article-bold,
.post-content strong {
  color: var(--dark);
  font-weight: 700;
}
.article-underline {
  text-decoration-line: underline;
  text-decoration-thickness: 0.12em;
  text-decoration-color: rgba(60,84,48,0.42);
  text-underline-offset: 0.22em;
  font-weight: 500;
}
.article-alert-text {
  color: #7A3D1C;
  font-weight: 700;
}
.article-inline-code {
  display: inline-block;
  margin: 0 0.1em;
  padding: 0.08em 0.45em;
  border: 1px solid var(--border-md);
  border-radius: 4px;
  background: var(--cream);
  color: var(--green);
  font-family: Consolas, 'Courier New', monospace;
  font-size: 0.86em;
  font-weight: 700;
  vertical-align: 0.03em;
}

.article-toc {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  background: var(--white);
  border-top: 1px solid var(--border-md);
  border-bottom: 1px solid var(--border-md);
  padding: 28px 0;
  margin: 0 0 64px;
}
.article-toc-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 4px;
}
.article-toc-heading {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0;
}
.article-toc ol {
  list-style: none;
  counter-reset: toc;
}
.article-toc ol li {
  counter-increment: toc;
  border-bottom: 1px solid var(--border);
}
.article-toc ol li:last-child {
  border-bottom: none;
}
.article-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  justify-content: space-between;
  padding: 11px 0;
  font-size: 14px;
  color: var(--dark);
  transition: color 0.2s;
}
.article-toc a:hover {
  color: var(--green);
}
.article-toc a::before {
  content: counter(toc, decimal-leading-zero);
  font-size: 10px;
  font-weight: 700;
  color: var(--green);
  flex-shrink: 0;
  min-width: 28px;
}

.article-point-box {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  background: var(--dark);
  padding: 32px;
  margin: 48px 0;
  color: var(--white);
}
.article-point-box-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.64);
  margin-bottom: 14px;
}
.article-point-box ul,
.article-check-list ul,
.article-step-list ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.article-point-box ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.88);
  line-height: 1.75;
}
.article-point-box ul li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--white);
  flex-shrink: 0;
  margin-top: 9px;
}

.article-check-list {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 28px 30px;
  margin: 40px 0;
}
.article-check-list-label,
.article-step-list-label {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
}
.article-check-list ul li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--body);
  line-height: 1.75;
}
.article-check-list ul li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border: 1.5px solid rgba(60,84,48,0.4);
  color: var(--green);
  font-size: 9px;
  font-weight: 700;
  margin-top: 3px;
}

.article-note-box {
  background: #F7F1EA;
  border: 1px solid rgba(122,98,72,0.18);
  border-left: 4px solid var(--bronze);
  padding: 28px 30px;
  margin: 40px 0;
}
.article-note-box-label {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 10px;
}
.article-note-box p {
  font-size: 14px !important;
  color: var(--body) !important;
  line-height: 1.85 !important;
  margin-bottom: 0 !important;
}

.article-quote {
  margin: 48px 0;
  padding: 30px 34px;
  border-left: 4px solid var(--green);
  background: var(--cream);
}
.article-quote p {
  margin-bottom: 12px;
  color: var(--dark);
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.8;
}
.article-quote cite {
  display: block;
  color: var(--mid);
  font-size: 12px;
  font-style: normal;
}

.article-step-list {
  margin: 48px 0;
  padding: 30px;
  border: 1px solid var(--border);
  background: var(--white);
}
.article-step-list ol {
  counter-reset: article-step;
  gap: 0;
}
.article-step-list li {
  counter-increment: article-step;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  color: var(--body);
  line-height: 1.8;
}
.article-step-list li::before {
  content: counter(article-step, decimal-leading-zero);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
}

.article-image {
  margin: 56px 0;
}
.article-image img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.article-image figcaption {
  margin-top: 12px;
  color: var(--mid);
  font-size: 12px;
  line-height: 1.7;
}

.post-cta {
  background: var(--green-bg);
  color: var(--dark);
  border-top: 1px solid rgba(60,84,48,0.12);
  border-bottom: 1px solid rgba(60,84,48,0.12);
}
.post-cta-label {
  color: var(--green);
}
.post-cta-title {
  color: var(--dark);
}
.post-cta-body {
  color: var(--mid);
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 36px;
}
.article-related-card {
  display: block;
  color: inherit;
  background: var(--white);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.article-related-card:hover {
  box-shadow: 0 4px 20px rgba(26,26,24,0.07);
}
.article-related-card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg2);
}
.article-related-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.9);
  transition: transform 0.4s ease;
}
.article-related-card:hover .article-related-card-thumb img {
  transform: scale(1.04);
}
.article-related-card-body {
  padding: 16px 18px 20px;
}
.article-related-card-cat {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(60,84,48,0.22);
  padding: 2px 9px;
  display: inline-block;
  margin-bottom: 8px;
}
.article-related-card-title {
  font-size: 13px;
  color: var(--dark);
  line-height: 1.65;
  font-weight: 500;
}

@media (max-width: 768px) {
  .post-hero {
    min-height: 620px;
  }
  .post-hero-content {
    padding-top: 116px;
    padding-bottom: 52px;
  }
  .post-header-title {
    font-size: clamp(30px, 9vw, 44px);
  }
  .post-header-lead {
    font-size: 14px;
  }
  .post-content {
    padding: 48px 24px 64px;
  }
  .post-content h2 {
    margin-top: 56px;
  }
  .article-toc,
  .article-point-box {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .article-toc {
    padding: 22px 0;
  }
  .article-point-box,
  .article-check-list,
  .article-note-box,
  .article-quote,
  .article-step-list {
    padding: 18px;
  }
  .article-step-list li {
    grid-template-columns: 38px 1fr;
    gap: 12px;
  }
  .article-related-grid {
    grid-template-columns: 1fr;
  }
}