/* DTage コラム — article pages (loaded after style.css) */

.dt-header--column .dt-nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 4px; }

.dt-column { padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(3.5rem, 8vw, 5.5rem); }
.dt-column__wrap { width: min(760px, 100% - 2.5rem); margin-inline: auto; }

.dt-crumbs { font-size: 0.82rem; color: var(--dt-muted); }
.dt-crumbs ol { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.dt-crumbs li + li::before { content: "›"; margin-right: 0.4rem; }
.dt-crumbs a { color: var(--dt-green); }

.dt-article__head { margin-top: 1.5rem; padding-bottom: 1.5rem; border-bottom: 2px solid var(--dt-green); }
.dt-article__cat { display: inline-block; background: var(--dt-green-soft); color: var(--dt-green); font-size: 0.8rem; font-weight: 700; padding: 0.15rem 0.75rem; border-radius: 999px; }
.dt-article__title { margin-top: 0.8rem; font-size: clamp(1.5rem, 3.6vw, 2.1rem); line-height: 1.45; color: var(--dt-green); }
.dt-article__meta { margin-top: 0.8rem; font-size: 0.85rem; color: var(--dt-muted); }

.dt-summary { margin-top: 2rem; background: var(--dt-green-soft); border-left: 4px solid var(--dt-green); border-radius: 0 var(--dt-radius) var(--dt-radius) 0; padding: 1.2rem 1.4rem; }
.dt-summary__title { font-weight: 700; color: var(--dt-green); font-size: 0.95rem; }
.dtage-lp .dt-summary ul { list-style: disc; padding-left: 1.3rem; margin-top: 0.5rem; }
.dt-summary li { font-size: 0.95rem; }

.dt-toc { margin-top: 2rem; border: 1px solid var(--dt-line); border-radius: var(--dt-radius); padding: 1.1rem 1.4rem; }
.dt-toc__title { font-weight: 700; font-size: 0.95rem; }
.dtage-lp .dt-toc ol { list-style: decimal; padding-left: 1.4rem; margin-top: 0.4rem; }
.dt-toc a { color: var(--dt-green); font-size: 0.95rem; }

.dt-article__body h2 { margin-top: 3rem; font-size: clamp(1.25rem, 2.6vw, 1.5rem); line-height: 1.5; color: var(--dt-green); padding-bottom: 0.4rem; border-bottom: 1px solid var(--dt-line); scroll-margin-top: 80px; }
.dt-article__body h3 { margin-top: 2rem; font-size: 1.1rem; color: var(--dt-ink); line-height: 1.5; }
.dt-article__body p { margin-top: 1rem; }
.dtage-lp .dt-article__body ul { list-style: disc; padding-left: 1.4rem; margin-top: 0.8rem; }
.dtage-lp .dt-article__body ol { list-style: decimal; padding-left: 1.4rem; margin-top: 0.8rem; }
.dt-article__body li + li { margin-top: 0.35rem; }
.dt-article__body a { color: var(--dt-green); }

.dt-table-wrap { margin-top: 1.2rem; overflow-x: auto; }
.dt-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 0.9rem; line-height: 1.6; }
.dt-table th, .dt-table td { border: 1px solid var(--dt-line); padding: 0.6rem 0.75rem; text-align: left; vertical-align: top; }
.dt-table thead th { background: var(--dt-green); color: #fff; }
.dt-table tbody th { background: var(--dt-green-soft); color: var(--dt-green); white-space: nowrap; }
.dt-table-note { margin-top: 0.5rem; font-size: 0.8rem; color: var(--dt-muted); }

.dt-cta-box { margin-top: 3rem; background: var(--dt-green-deep); color: #fff; border-radius: var(--dt-radius); padding: 1.6rem 1.8rem; }
.dt-cta-box__label { font-size: 0.8rem; color: var(--dt-mint); font-weight: 700; letter-spacing: 0.06em; }
.dt-article__body .dt-cta-box p { color: rgba(255,255,255,0.9); }
.dt-cta-box .dt-btn { margin-top: 1.2rem; }
.dt-article__body .dt-cta-box a.dt-btn { color: var(--dt-green-deep); }

.dt-sources { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--dt-line); font-size: 0.85rem; color: var(--dt-muted); }
.dt-sources__title { font-weight: 700; color: var(--dt-ink); }
.dtage-lp .dt-sources ul { list-style: disc; padding-left: 1.3rem; margin-top: 0.4rem; }
.dt-sources a { color: var(--dt-green); word-break: break-all; }

.dt-related { margin-top: 2.5rem; }
.dt-related__title { font-weight: 700; color: var(--dt-green); }

/* column index */
.dt-column__intro { margin-top: 1rem; color: var(--dt-ink); }
.dt-post-list { margin-top: 2rem; display: grid; gap: 1rem; }
.dt-post-card { display: block; border: 1px solid var(--dt-line); border-radius: var(--dt-radius); padding: 1.3rem 1.4rem; text-decoration: none; transition: border-color .15s, box-shadow .15s; }
.dt-post-card:hover { border-color: var(--dt-green); box-shadow: 0 10px 24px rgba(15,79,44,0.08); }
.dt-post-card__title { display: block; margin-top: 0.5rem; font-size: 1.1rem; font-weight: 700; color: var(--dt-green); line-height: 1.5; }
.dt-post-card__desc { display: block; margin-top: 0.4rem; font-size: 0.92rem; }
.dt-post-card__date { display: block; margin-top: 0.5rem; font-size: 0.8rem; color: var(--dt-muted); }