:root {
    --column-bg: #ffffff;
    --column-ink: #111111;
    --column-muted: #6b7280;
    --column-line: rgba(17, 17, 17, 0.12);
    --column-line-strong: rgba(17, 17, 17, 0.2);
    --column-soft: #f7f7f5;
    --column-max: 1200px;
    --column-reading: 760px;
}

/* =========================================================
   Archive
========================================================= */
.column-archive {
    padding: 96px 0 110px;
    background: var(--column-bg);
    color: var(--column-ink);
}

.column-archive__container {
    width: min(var(--column-max), calc(100% - 48px));
    margin: 0 auto;
}

.column-archive__header {
    max-width: 760px;
    margin: 0 auto 56px;
    text-align: center;
}

.column-archive__eyebrow {
    margin: 0 0 12px;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--column-muted);
}

.column-archive__title {
    margin: 0;
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.15;
    font-weight: 500;
    letter-spacing: 0.03em;
}

.column-archive__lead {
    margin: 18px auto 0;
    font-size: 15px;
    line-height: 1.9;
    color: var(--column-muted);
}

.column-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px 28px;
}

.column-card {
    border-bottom: 1px solid var(--column-line);
}

.column-card__link {
    display: block;
    color: inherit;
    text-decoration: none;
    transition: transform 0.28s ease, opacity 0.28s ease;
}

.column-card__link:hover {
    transform: translateY(-4px);
    opacity: 0.92;
}

.column-card__thumb {
    margin: 0 0 18px;
    overflow: hidden;
    background: #f3f3f3;
}

.column-card__thumb img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.column-card__body {
    padding: 0 0 22px;
}

.column-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.column-card__category,
.column-article__category {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 12px;
    border: 1px solid var(--column-line-strong);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.column-card__date,
.column-article__date {
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--column-muted);
}

.column-card__title {
    margin: 0;
    font-size: 22px;
    line-height: 1.5;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-card__excerpt {
    margin: 14px 0 0;
    font-size: 14px;
    line-height: 1.9;
    color: var(--column-muted);
}

.column-pagination {
    margin-top: 56px;
}

.column-pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.column-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 12px;
    border: 1px solid var(--column-line);
    color: var(--column-ink);
    text-decoration: none;
    font-size: 14px;
}

.column-pagination .page-numbers.current {
    background: var(--column-ink);
    color: #fff;
    border-color: var(--column-ink);
}

/* =========================================================
   Single
========================================================= */
.column-single {
    padding: 92px 0 120px;
    background: var(--column-bg);
    color: var(--column-ink);
}

.column-single__container {
    width: min(var(--column-reading), calc(100% - 40px));
    margin: 0 auto;
}

.column-article__header {
    margin-bottom: 44px;
}

.column-article__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.column-article__title {
    margin: 0;
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.22;
    font-weight: 500;
    letter-spacing: 0.025em;
}

.column-article__thumbnail {
    margin: 34px 0 0;
}

.column-article__thumbnail img {
    display: block;
    width: 100%;
    height: auto;
}

.column-article__content {
    font-size: 16px;
    line-height: 2;
    color: var(--column-ink);
}

.column-article__content>*:first-child {
    margin-top: 0;
}

.column-article__content p {
    margin: 1.2em 0 0;
}

.column-article__content h2 {
    margin: 72px 0 0;
    padding-top: 18px;
    border-top: 1px solid var(--column-line-strong);
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.45;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-article__content h3 {
    margin: 34px 0 0;
    font-size: 20px;
    line-height: 1.6;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-article__content ul,
.column-article__content ol {
    margin: 1.2em 0 0;
    padding-left: 1.4em;
}

.column-article__content li {
    margin-top: 0.5em;
}

.column-article__content a {
    color: var(--column-ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.column-article__content blockquote {
    margin: 28px 0 0;
    padding: 20px 24px;
    border-left: 2px solid var(--column-ink);
    background: var(--column-soft);
}

.column-article__content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 28px auto 0;
}

.column-article__content table {
    width: 100%;
    margin-top: 24px;
    border-collapse: collapse;
    font-size: 14px;
}

.column-article__content th,
.column-article__content td {
    border: 1px solid var(--column-line);
    padding: 14px 16px;
    text-align: left;
    vertical-align: top;
}

.column-article__content th {
    background: #fafafa;
    font-weight: 500;
}

/* =========================================================
   CTA
========================================================= */
.column-article__cta {
    margin-top: 72px;
    padding: 34px 30px;
    border: 1px solid var(--column-line);
    background: #fcfcfb;
}

.column-article__cta-label {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--column-muted);
}

.column-article__cta-title {
    margin: 0;
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.5;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-article__cta-text {
    margin: 14px 0 0;
    font-size: 15px;
    line-height: 1.9;
    color: var(--column-muted);
}

.column-article__cta-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.column-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border: 1px solid var(--column-ink);
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 0.06em;
    transition: background-color 0.25s ease, color 0.25s ease, opacity 0.25s ease;
}

.column-btn--primary {
    background: var(--column-ink);
    color: #fff;
}

.column-btn--ghost {
    background: transparent;
    color: var(--column-ink);
}

.column-btn:hover {
    opacity: 0.88;
}

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 1024px) {
    .column-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767px) {
    .column-archive {
        padding: 72px 0 88px;
    }

    .column-single {
        padding: 72px 0 88px;
    }

    .column-archive__container,
    .column-single__container {
        width: min(100%, calc(100% - 28px));
    }

    .column-list {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .column-card__title {
        font-size: 19px;
    }

    .column-article__title {
        font-size: 32px;
    }

    .column-article__content {
        font-size: 15px;
        line-height: 1.9;
    }

    .column-article__content h2 {
        margin-top: 56px;
        font-size: 24px;
    }

    .column-article__content h3 {
        font-size: 18px;
    }

    .column-article__cta {
        padding: 24px 20px;
    }

    .column-article__cta-buttons {
        flex-direction: column;
    }

    .column-btn {
        width: 100%;
    }
}

/* =========================================================
   Related Articles
========================================================= */
.column-related {
    margin-top: 88px;
    padding-top: 28px;
    border-top: 1px solid var(--column-line-strong);
}

.column-related__head {
    margin-bottom: 28px;
}

.column-related__eyebrow {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--column-muted);
}

.column-related__title {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.4;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-related__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.column-related-card {
    border-bottom: 1px solid var(--column-line);
}

.column-related-card__link {
    display: block;
    color: inherit;
    text-decoration: none;
    transition: transform 0.28s ease, opacity 0.28s ease;
}

.column-related-card__link:hover {
    transform: translateY(-4px);
    opacity: 0.92;
}

.column-related-card__thumb {
    margin: 0 0 16px;
    overflow: hidden;
    background: #f3f3f3;
}

.column-related-card__thumb img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.column-related-card__body {
    padding: 0 0 18px;
}

.column-related-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.column-related-card__category {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    border: 1px solid var(--column-line-strong);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.column-related-card__date {
    font-size: 12px;
    color: var(--column-muted);
    letter-spacing: 0.08em;
}

.column-related-card__title {
    margin: 0;
    font-size: 18px;
    line-height: 1.6;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.column-related-card__excerpt {
    margin: 12px 0 0;
    font-size: 14px;
    line-height: 1.85;
    color: var(--column-muted);
}

@media (max-width: 1024px) {
    .column-related__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 767px) {
    .column-related {
        margin-top: 64px;
        padding-top: 22px;
    }

    .column-related__title {
        font-size: 24px;
    }

    .column-related-card__title {
        font-size: 17px;
    }
}

/* =========================================================
   Taxonomy Archive
========================================================= */
.column-taxonomy .column-archive__lead--rich p {
  margin: 0;
}

.column-empty {
  padding: 56px 24px;
  border: 1px solid var(--column-line);
  text-align: center;
  background: #fcfcfb;
}

.column-empty__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--column-muted);
}

.column-empty__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.column-empty__text {
  margin: 14px auto 0;
  max-width: 560px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--column-muted);
}

.column-empty .column-btn {
  margin-top: 24px;
}

/* =========================================================
   Post Navigation
========================================================= */
.column-post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--column-line-strong);
}

.column-post-nav__item {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 120px;
  padding: 22px 22px 20px;
  border: 1px solid var(--column-line);
  background: #fff;
  text-decoration: none;
  color: var(--column-ink);
  transition: transform 0.25s ease, opacity 0.25s ease, border-color 0.25s ease;
}

.column-post-nav__item:hover {
  transform: translateY(-3px);
  opacity: 0.94;
  border-color: var(--column-line-strong);
}

.column-post-nav__item--prev {
  text-align: left;
}

.column-post-nav__item--next {
  text-align: right;
}

.column-post-nav__item--empty {
  visibility: hidden;
}

.column-post-nav__label {
  display: block;
  margin-bottom: 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--column-muted);
}

.column-post-nav__title {
  display: block;
  font-size: 17px;
  line-height: 1.7;
  font-weight: 500;
  letter-spacing: 0.02em;
}

@media (max-width: 767px) {
  .column-post-nav {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 44px;
  }

  .column-post-nav__item,
  .column-post-nav__item--next {
    text-align: left;
  }

  .column-post-nav__item--empty {
    display: none;
  }

  .column-post-nav__title {
    font-size: 16px;
  }
}

/* =========================================
   Column Archive
========================================= */
.column-archive {
    padding: 110px 0 100px;
    background: #f8fbff;
}

.column-archive__container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.column-archive__header {
    text-align: center;
    margin-bottom: 56px;
}

.column-archive__eyebrow {
    margin: 0 0 12px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: #1d9bf0;
}

.column-archive__title {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: #0f172a;
}

.column-archive__lead {
    max-width: 760px;
    margin: 18px auto 0;
    font-size: 1rem;
    line-height: 1.9;
    color: #475569;
}

/* =========================================
   Card List
========================================= */
.column-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}

.column-card {
    margin: 0;
}

.column-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 22px;
    overflow: hidden;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.column-card__link:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.10);
    border-color: rgba(29, 155, 240, 0.22);
}

.column-card__thumb {
    margin: 0;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #eaf4ff;
}

.column-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.column-card__link:hover .column-card__thumb img {
    transform: scale(1.05);
}

.column-card__body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 26px 24px 28px;
}

.column-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.column-card__category {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 30px;
    padding: 6px 12px;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.04em;
    color: #0b5cab;
    background: #eaf5ff;
    border-radius: 999px;
}

.column-card__title {
    margin: 0;
    font-size: 1.08rem;
    font-weight: 700;
    line-height: 1.75;
    color: #0f172a;
    word-break: break-word;
    transition: color 0.3s ease;
}

.column-card__link:hover .column-card__title {
    color: #0b5cab;
}

/* =========================================
   Pagination
========================================= */
.column-pagination {
    margin-top: 56px;
    display: flex;
    justify-content: center;
}

.column-pagination .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
}

.column-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 14px;
    border-radius: 999px;
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.1);
    color: #0f172a;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.25s ease;
}

.column-pagination .page-numbers:hover,
.column-pagination .page-numbers.current {
    background: #1d9bf0;
    color: #ffffff;
    border-color: #1d9bf0;
}

/* =========================================
   Empty
========================================= */
.column-archive__empty {
    text-align: center;
    padding: 56px 20px;
    font-size: 1rem;
    color: #64748b;
    background: #ffffff;
    border-radius: 20px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

/* =========================================
   Tablet
========================================= */
@media (max-width: 991px) {
    .column-archive {
        padding: 96px 0 80px;
    }

    .column-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
    }

    .column-archive__header {
        margin-bottom: 44px;
    }

    .column-card__body {
        padding: 22px 20px 24px;
    }
}

/* =========================================
   Mobile
========================================= */
@media (max-width: 767px) {
    .column-archive {
        padding: 78px 0 64px;
    }

    .column-archive__container {
        width: min(100% - 24px, 640px);
    }

    .column-archive__header {
        margin-bottom: 36px;
    }

    .column-archive__lead {
        font-size: 0.95rem;
        line-height: 1.8;
        margin-top: 14px;
    }

    .column-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .column-card__body {
        gap: 12px;
        padding: 20px 18px 22px;
    }

    .column-card__title {
        font-size: 1rem;
        line-height: 1.7;
    }

    .column-pagination {
        margin-top: 40px;
    }

    .column-pagination .page-numbers {
        min-width: 40px;
        height: 40px;
        padding: 0 12px;
        font-size: 0.95rem;
    }
}