.blog-detail {
  position: relative;
}

.article-wrap {
  max-width: 1280px;
}

.article-cover {
  border-radius: 14px;
  overflow: hidden;
  height: 470px;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-wrap h1 {
  margin-top: 22px;
  max-width: 1080px;
  color: var(--color-brand-900);
  font-family: var(--font-ui);
  font-size: clamp(32px, 2.1vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.article-intro {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.article-intro p {
  color: var(--color-neutral-880);
  font-size: 15px;
  line-height: 1.45;
  max-width: 1260px;
}

.article-index {
  margin-top: 34px;
  display: grid;
  gap: 8px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 30px;
}

.article-index p {
  color: var(--color-text-tertiary);
  font-size: 15px;
  margin-bottom: 2px;
}

.article-index a {
  color: var(--color-brand-700);
  font-size: 13px;
  line-height: 1.4;
}

.article-content {
  margin-top: 34px;
}

.article-content h2 {
  margin-top: 28px;
  color: var(--color-brand-900);
  font-family: var(--font-ui);
  font-size: clamp(30px, 2vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article-content h3 {
  margin-top: 28px;
  color: var(--color-brand-900);
  font-family: var(--font-ui);
  font-size: clamp(26px, 1.8vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article-content p {
  margin-top: 12px;
  color: var(--color-neutral-970);
  font-size: 15px;
  line-height: 1.42;
}

.article-content ul {
  margin-top: 10px;
  padding-left: 18px;
}

.article-content li {
  color: var(--color-neutral-970);
  font-size: 15px;
  line-height: 1.38;
  margin-top: 3px;
}

.article-course {
  margin-top: 42px;
  padding-top: 20px;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.article-course-cover {
  height: 160px;
  border-radius: 8px;
  overflow: hidden;
  display: block;
}

.article-course-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.article-course-meta .cat {
  color: var(--color-brand-700);
  flex: 0 0 auto;
}

.article-course-meta-right {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 18px;
}

.article-course-meta span,
.article-course-meta-right span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-course-meta img {
  width: 16px;
  height: 16px;
  opacity: 0.8;
}

.article-course h4 {
  margin-top: 10px;
  font-size: var(--font-size-xl);
  line-height: 1.25;
  color: var(--color-neutral-970);
  letter-spacing: -0.01em;
}

.article-course-divider {
  margin-top: 16px;
  border-top: 1px solid var(--color-border-soft-2);
}

.article-course-row {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.article-course .price {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.article-course .price strong {
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-neutral-970);
}

.article-course .price span {
  font-size: var(--font-size-lg);
  color: #d55f71;
  text-decoration: line-through;
}

.article-course .price em {
  font-style: normal;
  font-size: 13px;
  line-height: 1;
  color: #dd536c;
  border: 1px solid #ef8ea0;
  border-radius: 999px;
  padding: 5px 9px;
}

.article-course-btn {
  height: 40px;
  border: 0;
  border-radius: 999px;
  background: var(--color-brand-800);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  padding: 0 16px;
}

.article-share {
  margin-top: 72px;
}

.article-share h3 {
  color: var(--color-brand-900);
  font-family: var(--font-ui);
  font-size: clamp(14px, 1.9vw, 24px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article-share-actions {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.article-share-actions a {
  height: 52px;
  width: 200px;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  color: #13818f;
  font-size: var(--font-size-xs);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  line-height: 1;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.article-share-actions img {
  width: 14px;
  height: 14px;
  filter: brightness(0) saturate(100%) invert(38%) sepia(77%) saturate(557%)
    hue-rotate(142deg) brightness(87%) contrast(86%);
}

.article-author {
  margin-top: 56px;
}

.article-author h3 {
  color: var(--color-brand-900);
  font-family: var(--font-ui);
  font-size: clamp(14px, 1.9vw, 24px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article-author-box {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.article-author-box img {
  width: 74px;
  height: auto;
}

.article-author-box strong {
  color: #0f1c29;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.article-author-box p {
  margin-top: 10px;
  color: var(--color-neutral-920);
  font-size: 13px;
  line-height: 1.45;
}

@media (max-width: 1100px) {
  .article-cover {
    height: 360px;
  }

  .article-wrap h1 {
    font-size: 40px;
  }

  .article-content h2 {
    font-size: 34px;
  }

  .article-content h3 {
    font-size: 29px;
  }

  .article-course {
    grid-template-columns: 1fr;
  }

  .article-course-cover {
    max-width: 340px;
    height: 190px;
  }

  .article-course-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .article-course-meta-right {
    justify-content: flex-start;
  }

  .article-course h4 {
    font-size: var(--font-size-lg);
  }

  .article-course .price strong {
    font-size: 30px;
  }

  .article-course .price span {
    font-size: var(--font-size-md);
  }

  .article-course .price em {
    font-size: var(--font-size-xs);
  }

  .article-course-btn {
    height: 36px;
    font-size: 13px;
    padding: 0 14px;
  }

  .article-author-box {
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 14px;
  }

  .article-author-box img {
    width: 86px;
  }

  .article-author-box strong {
    font-size: 15px;
  }

  .article-author-box p {
    font-size: 13px;
  }
}

@media (max-width: 700px) {
  .article-cover {
    height: 220px;
  }

  .article-wrap h1 {
    font-size: 30px;
  }

  .article-intro p,
  .article-content p,
  .article-content li {
    font-size: var(--font-size-sm);
  }

  .article-content h2 {
    font-size: var(--font-size-2xl);
  }

  .article-content h3 {
    font-size: 22px;
  }

  .article-course h4 {
    font-size: var(--font-size-lg);
  }

  .article-course .price strong {
    font-size: 30px;
  }

  .article-course .price span {
    font-size: var(--font-size-lg);
  }

  .article-course .price em {
    font-size: 13px;
    border-width: 1px;
    padding: 5px 9px;
  }

  .article-course-btn {
    height: 42px;
    font-size: var(--font-size-md);
    padding: 0 16px;
  }

  .article-share h3,
  .article-author h3 {
    font-size: 28px;
  }

  .article-share-actions {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .article-share-actions a {
    height: 46px;
    font-size: var(--font-size-xs);
    border-width: 2px;
    gap: 6px;
  }

  .article-share-actions img {
    width: 14px;
    height: 14px;
  }

  .article-author-box {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 10px;
  }

  .article-author-box img {
    width: 68px;
  }

  .article-author-box strong {
    font-size: var(--font-size-lg);
  }

  .article-author-box p {
    font-size: 13px;
  }
}

/* === Responsive pass (blog detail) === */
@media (max-width: 980px) {
  .article-wrap h1 {
    font-size: clamp(30px, 5.4vw, 40px);
  }

  .article-content h2 {
    font-size: clamp(24px, 4.2vw, 34px);
  }

  .article-content h3 {
    font-size: clamp(22px, 3.9vw, 30px);
  }

  .article-share h3,
  .article-author h3 {
    font-size: 34px;
  }

  .article-share-actions {
    flex-wrap: wrap;
  }

  .article-share-actions a {
    width: 180px;
    height: 44px;
    font-size: var(--font-size-xs);
  }

  .article-course {
    gap: 16px;
  }

  .article-course-meta {
    font-size: var(--font-size-xs);
  }

  .article-course h4 {
    font-size: 17px;
  }

  .article-course-row {
    flex-wrap: wrap;
  }
}

@media (max-width: 700px) {
  .article-wrap h1 {
    margin-top: 16px;
    font-size: 27px;
    line-height: 1.2;
  }

  .article-intro,
  .article-content,
  .article-index {
    margin-top: 20px;
  }

  .article-intro p,
  .article-content p,
  .article-content li {
    font-size: 13px;
  }

  .article-index p {
    font-size: 13px;
  }

  .article-index a {
    font-size: var(--font-size-xs);
  }

  .article-content h2 {
    font-size: 22px;
  }

  .article-content h3 {
    font-size: 19px;
  }

  .article-course {
    margin-top: 28px;
    padding-top: 10px;
    grid-template-columns: 1fr;
  }

  .article-course-cover {
    max-width: 100%;
    height: 160px;
  }

  .article-course-meta-right {
    gap: 10px;
  }

  .article-course .price strong {
    font-size: 26px;
  }

  .article-course .price span {
    font-size: var(--font-size-sm);
  }

  .article-course .price em {
    font-size: var(--font-size-xs);
    padding: 4px 8px;
  }

  .article-course-btn {
    height: 38px;
    font-size: 13px;
    padding: 0 12px;
  }

  .article-share {
    margin-top: 34px;
  }

  .article-share h3,
  .article-author h3 {
    font-size: var(--font-size-xl);
  }

  .article-share-actions {
    margin-top: 12px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .article-share-actions a {
    width: 100%;
    justify-content: center;
    height: 40px;
    font-size: var(--font-size-xs);
  }

  .article-author {
    margin-top: 30px;
  }

  .article-author-box {
    margin-top: 12px;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 8px;
  }

  .article-author-box img {
    width: 58px;
  }

  .article-author-box strong {
    font-size: var(--font-size-sm);
  }

  .article-author-box p {
    font-size: var(--font-size-xs);
  }
}